#
de_dirs = manuals/de/catalog manuals/de/concepts manuals/de/console \
- manuals/de/developers manuals/de/install manuals/de/problems \
+ manuals/de/developers manuals/de/install manusla/de/misc manuals/de/problems \
manuals/de/utility
en_dirs = manuals/en/catalog manuals/en/concepts manuals/en/console \
- manuals/en/developers manuals/en/install manuals/en/problems \
+ manuals/en/developers manuals/en/install manuals/en/misc manuals/en/problems \
manuals/en/utility
es_dirs = manuals/es/catalog manuals/es/concepts manuals/es/console \
- manuals/es/developers manuals/es/install manuals/es/problems \
+ manuals/es/developers manuals/es/install manuals/es/misc manuals/es/problems \
manuals/es/utility
fr_dirs = manuals/fr/catalog manuals/fr/concepts manuals/fr/console \
- manuals/fr/developers manuals/fr/install manuals/fr/problems \
+ manuals/fr/developers manuals/fr/install manuals/fr/misc manuals/fr/problems \
manuals/fr/utility
all_dirs = ${de_dirs} ${en_dirs} ${es_dirs} ${fr_dirs}
manuals/en/install/Makefile \
manuals/en/problems/Makefile \
manuals/en/utility/Makefile \
+ manuals/en/misc/Makefile \
manuals/es/catalog/Makefile \
manuals/es/concepts/Makefile \
manuals/es/console/Makefile \
# Now move common files into each subdirectory
for i in manuals/update_version manuals/version.tex manuals/bacula.sty ; do
- for j in catalog concepts console developers install problems utility ; do
+ for j in catalog concepts console developers install misc problems utility ; do
cp -f $i manuals/de/$j
cp -f $i manuals/en/$j
cp -f $i manuals/es/$j
-ac_config_files="$ac_config_files autoconf/Make.common Makefile manuals/update_version manuals/version.tex manuals/bacula.sty manuals/de/catalog/Makefile manuals/de/concepts/Makefile manuals/de/console/Makefile manuals/de/developers/Makefile manuals/de/install/Makefile manuals/de/problems/Makefile manuals/de/utility/Makefile manuals/en/catalog/Makefile manuals/en/concepts/Makefile manuals/en/console/Makefile manuals/en/developers/Makefile manuals/en/install/Makefile manuals/en/problems/Makefile manuals/en/utility/Makefile manuals/es/catalog/Makefile manuals/es/concepts/Makefile manuals/es/console/Makefile manuals/es/developers/Makefile manuals/es/install/Makefile manuals/es/problems/Makefile manuals/es/utility/Makefile manuals/fr/catalog/Makefile manuals/fr/concepts/Makefile manuals/fr/console/Makefile manuals/fr/developers/Makefile manuals/fr/install/Makefile manuals/fr/problems/Makefile manuals/fr/utility/Makefile bacula-web/Makefile bacula-web/version.tex $PFILES"
+ac_config_files="$ac_config_files autoconf/Make.common Makefile manuals/update_version manuals/version.tex manuals/bacula.sty manuals/de/catalog/Makefile manuals/de/concepts/Makefile manuals/de/console/Makefile manuals/de/developers/Makefile manuals/de/install/Makefile manuals/de/problems/Makefile manuals/de/utility/Makefile manuals/en/catalog/Makefile manuals/en/concepts/Makefile manuals/en/console/Makefile manuals/en/developers/Makefile manuals/en/install/Makefile manuals/en/problems/Makefile manuals/en/utility/Makefile manuals/en/misc/Makefile manuals/es/catalog/Makefile manuals/es/concepts/Makefile manuals/es/console/Makefile manuals/es/developers/Makefile manuals/es/install/Makefile manuals/es/problems/Makefile manuals/es/utility/Makefile manuals/fr/catalog/Makefile manuals/fr/concepts/Makefile manuals/fr/console/Makefile manuals/fr/developers/Makefile manuals/fr/install/Makefile manuals/fr/problems/Makefile manuals/fr/utility/Makefile bacula-web/Makefile bacula-web/version.tex $PFILES"
ac_config_commands="$ac_config_commands default"
"manuals/en/install/Makefile") CONFIG_FILES="$CONFIG_FILES manuals/en/install/Makefile" ;;
"manuals/en/problems/Makefile") CONFIG_FILES="$CONFIG_FILES manuals/en/problems/Makefile" ;;
"manuals/en/utility/Makefile") CONFIG_FILES="$CONFIG_FILES manuals/en/utility/Makefile" ;;
+ "manuals/en/misc/Makefile") CONFIG_FILES="$CONFIG_FILES manuals/en/misc/Makefile" ;;
"manuals/es/catalog/Makefile") CONFIG_FILES="$CONFIG_FILES manuals/es/catalog/Makefile" ;;
"manuals/es/concepts/Makefile") CONFIG_FILES="$CONFIG_FILES manuals/es/concepts/Makefile" ;;
"manuals/es/console/Makefile") CONFIG_FILES="$CONFIG_FILES manuals/es/console/Makefile" ;;
# Now move common files into each subdirectory
for i in manuals/update_version manuals/version.tex manuals/bacula.sty ; do
- for j in catalog concepts console developers install problems utility ; do
+ for j in catalog concepts console developers install misc problems utility ; do
cp -f $i manuals/de/$j
cp -f $i manuals/en/$j
cp -f $i manuals/es/$j
--- /dev/null
+#
+#
+# Makefile for LaTeX
+#
+# To build everything do
+# make tex
+# make web
+# make html
+# make dvipdf
+#
+# or simply
+#
+# make
+#
+# for rapid development do:
+# make tex
+# make show
+#
+#
+# If you are having problems getting "make" to work, debugging it is
+# easier if can see the output from latex, which is normally redirected
+# to /dev/null. To see it, do the following:
+#
+# cd docs/manual
+# make tex
+# latex bacula.tex
+#
+# typically the latex command will stop indicating the error (e.g. a
+# missing \ in front of a _ or a missing { or ] ...
+#
+# The following characters must be preceded by a backslash
+# to be entered as printable characters:
+#
+# # $ % & ~ _ ^ \ { }
+#
+
+IMAGES=../../../images
+
+DOC=misc
+
+first_rule: all
+
+all: tex web dvipdf mini-clean
+
+.SUFFIXES: .tex .html
+.PHONY:
+.DONTCARE:
+
+
+tex:
+ @./update_version
+ @echo "Making version `cat version.tex`"
+ @cp -fp ${IMAGES}/hires/*.eps .
+ @touch ${DOC}i-dir.tex ${DOC}i-fd.tex ${DOC}i-sd.tex \
+ ${DOC}i-console.tex ${DOC}i-general.tex
+ latex -interaction=batchmode ${DOC}.tex
+ makeindex ${DOC}.idx -o ${DOC}.ind 2>/dev/null
+ latex -interaction=batchmode ${DOC}.tex
+
+pdf:
+ @echo "Making pdfm"
+ @cp -fp ${IMAGES}/hires/*.eps .
+ dvipdfm -p a4 ${DOC}.dvi
+
+dvipdf:
+ @echo "Making dvi to pdf"
+ @cp -fp ${IMAGES}/hires/*.eps .
+ dvipdf ${DOC}.dvi ${DOC}.pdf
+
+html:
+ @echo " "
+ @echo "Making html"
+ @cp -fp ${IMAGES}/*.eps .
+ @rm -f next.eps next.png prev.eps prev.png up.eps up.png
+ @(if [ -f imagename_translations ] ; then \
+ ./translate_images.pl --from_meaningful_names ${DOC}.html; \
+ fi)
+ latex2html -white -no_subdir -split 0 -toc_stars -white \
+ -init_file latex2html-init.pl ${DOC} >tex.out 2>&1
+ ./translate_images.pl --to_meaningful_names ${DOC}.html
+ (cd ${DOC}; for i in *.png ; do cp -fp ../${IMAGES}/$${i} . 2>/dev/null; done)
+ @echo "Done making html"
+
+web:
+ @echo "Making web"
+ @mkdir -p ${DOC}
+ @cp -fp ${IMAGES}/*.eps .
+ @rm -f next.eps next.png prev.eps prev.png up.eps up.png
+ @cp -fp ${IMAGES}/*.eps ${DOC}/
+ @cp -fp ${IMAGES}/*.eps ${IMAGES}/*.png ${DOC}/
+ @rm -f ${DOC}/xp-*.png
+ @rm -f ${DOC}/next.eps ${DOC}/next.png ${DOC}/prev.eps ${DOC}/prev.png ${DOC}/up.eps ${DOC}/up.png
+ @rm -rf ${DOC}/*.html
+ latex2html -split 3 -local_icons -t "Miscellaneous Guide" -long_titles 4 \
+ -toc_stars -contents_in_nav -init_file latex2html-init.pl -white ${DOC} >tex.out 2>&1
+ ./translate_images.pl --to_meaningful_names ${DOC}/Miscel_Guide.html
+ (cd ${DOC}; for i in *.png ; do cp -fp ../${IMAGES}/$${i} . 2>/dev/null; done)
+ @echo "Done making web"
+show:
+ xdvi ${DOC}
+
+texcheck:
+ ./check_tex.pl ${DOC}.tex
+
+main_configs:
+ pic2graph -density 100 <main_configs.pic >main_configs.png
+
+mini-clean:
+ @rm -f 1 2 3 *.tex~
+ @rm -f *.gif *.jpg *.eps
+ @rm -f *.aux *.cp *.fn *.ky *.log *.pg
+ @rm -f *.backup *.ilg *.lof *.lot
+ @rm -f *.cdx *.cnd *.ddx *.ddn *.fdx *.fnd *.ind *.sdx *.snd
+ @rm -f *.dnd *.old *.out
+ @rm -f ${DOC}/*.gif ${DOC}/*.jpg ${DOC}/*.eps
+ @rm -f ${DOC}/*.aux ${DOC}/*.cp ${DOC}/*.fn ${DOC}/*.ky ${DOC}/*.log ${DOC}/*.pg
+ @rm -f ${DOC}/*.backup ${DOC}/*.ilg ${DOC}/*.lof ${DOC}/*.lot
+ @rm -f ${DOC}/*.cdx ${DOC}/*.cnd ${DOC}/*.ddx ${DOC}/*.ddn ${DOC}/*.fdx ${DOC}/*.fnd ${DOC}/*.ind ${DOC}/*.sdx ${DOC}/*.snd
+ @rm -f ${DOC}/*.dnd ${DOC}/*.old ${DOC}/*.out
+ @rm -f ${DOC}/WARNINGS
+
+
+clean:
+ @rm -f 1 2 3 *.tex~
+ @rm -f *.png *.gif *.jpg *.eps
+ @rm -f *.pdf *.aux *.cp *.fn *.ky *.log *.pg
+ @rm -f *.html *.backup *.ps *.dvi *.ilg *.lof *.lot
+ @rm -f *.cdx *.cnd *.ddx *.ddn *.fdx *.fnd *.ind *.sdx *.snd
+ @rm -f *.dnd imagename_translations
+ @rm -f *.old WARNINGS *.out *.toc *.idx
+ @rm -f ${DOC}i-*.tex
+ @rm -rf ${DOC}
+
+
+distclean: clean
+ @rm -f images.pl labels.pl internals.pl
+ @rm -f Makefile version.tex
--- /dev/null
+\newfont{\bighead}{cmr17 at 36pt}
+\parskip 10pt
+\parindent 0pt
+
+\title{\includegraphics{\idir bacula-logo.eps} \\ \bigskip
+ \Huge{Bacula}$^{\normalsize \textregistered}$ \Huge{Miscellaneous Guide}
+ \begin{center}
+ \large{It comes in the night and sucks
+ the essence from your computers. }
+ \end{center}
+}
+
+
+\author{Kern Sibbald}
+\date{\vspace{1.0in}\today \\
+ This manual documents Bacula version \fullversion \\
+ \vspace{0.2in}
+ Copyright {\copyright} 1999-2009, Free Software Foundation Europe
+ e.V. \\
+ Bacula {\textregistered} is a registered trademark of Kern Sibbald.\\
+ \vspace{0.2in}
+ Permission is granted to copy, distribute and/or modify this document under the terms of the
+ GNU Free Documentation License, Version 1.2 published by the Free Software Foundation;
+ with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
+ A copy of the license is included in the section entitled "GNU Free Documentation License".
+}
+
+\maketitle
--- /dev/null
+#
+# Avoid that @VERSION@ and @DATE@ are changed by configure
+# This file is sourced by update_version
+#
+echo "s%@VERSION@%${VERSION}%g" >${out}
+echo "s%@DATE@%${DATE}%g" >>${out}
--- /dev/null
+%%
+%%
+
+\chapter{DVD Volumes}
+\label{_DVDChapterStart}
+\index[general]{DVD Volumes}
+\index[general]{Writing DVDs}
+\index[general]{DVD Writing}
+\index[general]{Volumes!DVD}
+
+Bacula allows you to specify that you want to write to DVD. However,
+this feature is implemented only in version 1.37 or later.
+You may in fact write to DVD+RW, DVD+R, DVD-R, or DVD-RW
+media. The actual process used by Bacula is to first write
+the image to a spool directory, then when the Volume reaches
+a certain size or, at your option, at the end of a Job, Bacula
+will transfer the image from the spool directory to the
+DVD. The actual work of transferring the image is done
+by a script {\bf dvd-handler}, and the heart of that
+script is a program called {\bf growisofs} which allows
+creating or adding to a DVD ISO filesystem.
+
+You must have {\bf dvd+rw-tools} loaded on your system for DVD writing to
+work. Please note that the original {\bf dvd+rw-tools} package does {\bf
+NOT} work with Bacula. You must apply a patch which can be found in the
+{\bf patches} directory of Bacula sources with the name
+{\bf dvd+rw-tools-5.21.4.10.8.bacula.patch} for version 5.21 of the tools,
+or patch {bf dvd+rw-tools-6.1.bacula.patch} if you have version 6.1
+on your system. Unfortunately, this requires you to build the dvd\_rw-tools
+from source.
+
+Note, some Linux distros such as Debian dvd+rw-tools-7.0-4 package already
+have the patch applied, so please check.
+
+The fact that Bacula cannot use the OS to write directly
+to the DVD makes the whole process a bit more error prone than
+writing to a disk or a tape, but nevertheless, it does work if you
+use some care to set it up properly. However, at the current time
+(version 1.39.30 -- 12 December 2006) we still consider this code to be
+BETA quality. As a consequence, please do careful testing before relying
+on DVD backups in production.
+
+The remainder of this chapter explains the various directives that you can
+use to control the DVD writing.
+
+\label{DVDdirectives}
+\section{DVD Specific SD Directives}
+\index[general]{Directives!DVD}
+\index[general]{DVD Specific SD Directives }
+
+The following directives are added to the Storage daemon's
+Device resource.
+
+\begin{description}
+
+\item [Requires Mount = {\it Yes|No}]
+ \index[general]{Requires Mount }
+ You must set this directive to {\bf yes} for DVD-writers, and to {\bf no} for
+ all other devices (tapes/files). This directive indicates if the device
+ requires to be mounted using the {\bf Mount Command}.
+ To be able to write a DVD, the following directives must also be
+ defined: {\bf Mount Point}, {\bf Mount Command}, {\bf Unmount Command} and
+ {\bf Write Part Command}.
+
+\item [Mount Point = {\it directory}]
+ \index[general]{Mount Point}
+ Directory where the device can be mounted.
+
+\item [Mount Command = {\it name-string}]
+ \index[general]{Mount Command}
+ Command that must be executed to mount the device. Although the
+ device is written directly, the mount command is necessary in
+ order to determine the free space left on the DVD. Before the command is
+ executed, \%a is replaced with the Archive Device, and \%m with the Mount
+ Point.
+
+ Most frequently, you will define it as follows:
+
+\footnotesize
+\begin{verbatim}
+ Mount Command = "/bin/mount -t iso9660 -o ro %a %m"
+\end{verbatim}
+\normalsize
+
+However, if you have defined a mount point in /etc/fstab, you might be
+able to use a mount command such as:
+
+\footnotesize
+\begin{verbatim}
+ Mount Command = "/bin/mount /media/dvd"
+\end{verbatim}
+\normalsize
+
+
+\item [Unmount Command = {\it name-string}]
+ \index[general]{Unmount Command}
+ Command that must be executed to unmount the device. Before the command is
+ executed, \%a is replaced with the Archive Device, and \%m with the Mount
+ Point.
+
+ Most frequently, you will define it as follows:
+
+\footnotesize
+\begin{verbatim}
+ Unmount Command = "/bin/umount %m"
+\end{verbatim}
+\normalsize
+
+\item [Write Part Command = {\it name-string}]
+ \index[general]{Write Part Command }
+ Command that must be executed to write a part to the device. Before the
+ command is executed, \%a is replaced with the Archive Device, \%m with the
+ Mount Point, \%e is replaced with 1 if we are writing the first part,
+ and with 0 otherwise, and \%v with the current part filename.
+
+ For a DVD, you will most frequently specify the Bacula supplied {\bf
+ dvd-handler} script as follows:
+
+\footnotesize
+\begin{verbatim}
+ Write Part Command = "/path/dvd-handler %a write %e %v"
+\end{verbatim}
+\normalsize
+
+ Where {\bf /path} is the path to your scripts install directory, and
+ dvd-handler is the Bacula supplied script file.
+ This command will already be present, but commented out,
+ in the default bacula-sd.conf file. To use it, simply remove
+ the comment (\#) symbol.
+
+
+\item [Free Space Command = {\it name-string}]
+ \index[general]{Free Space Command }
+ Command that must be executed to check how much free space is left on the
+ device. Before the command is executed,\%a is replaced with the Archive
+ Device.
+
+ For a DVD, you will most frequently specify the Bacula supplied {\bf
+ dvd-handler} script as follows:
+
+\footnotesize
+\begin{verbatim}
+ Free Space Command = "/path/dvd-handler %a free"
+\end{verbatim}
+\normalsize
+
+ Where {\bf /path} is the path to your scripts install directory, and
+ dvd-handler is the Bacula supplied script file.
+ If you want to specify your own command, please look at the code in
+ dvd-handler to see what output Bacula expects from this command.
+ This command will already be present, but commented out,
+ in the default bacula-sd.conf file. To use it, simply remove
+ the comment (\#) symbol.
+
+ If you do not set it, Bacula will expect there is always free space on the
+ device.
+
+\end{description}
+
+In addition to the directives specified above, you must also
+specify the other standard Device resource directives. Please see the
+sample DVD Device resource in the default bacula-sd.conf file. Be sure
+to specify the raw device name for {\bf Archive Device}. It should
+be a name such as {\bf /dev/cdrom} or {\bf /media/cdrecorder} or
+{\bf /dev/dvd} depending on your system. It will not be a name such
+as {\bf /mnt/cdrom}.
+
+Finally, for {\bf growisofs} to work, it must be able to lock
+a certain amount of memory in RAM. If you have restrictions on
+this function, you may have failures. Under {\bf bash}, you can
+set this with the following command:
+
+\footnotesize
+\begin{verbatim}
+ulimit -l unlimited
+\end{verbatim}
+\normalsize
+
+\section{Edit Codes for DVD Directives}
+\index[general]{Directives!DVD Edit Codes}
+\index[general]{Edit Codes for DVD Directives }
+
+Before submitting the {\bf Mount Command}, {\bf Unmount Command},
+{\bf Write Part Command}, or {\bf Free Space Command} directives
+to the operating system, Bacula performs character substitution of the
+following characters:
+
+\footnotesize
+\begin{verbatim}
+ %% = %
+ %a = Archive device name
+ %e = erase (set if cannot mount and first part)
+ %n = part number
+ %m = mount point
+ %v = last part name (i.e. filename)
+\end{verbatim}
+\normalsize
+
+
+
+\section{DVD Specific Director Directives}
+\index[general]{Directives!DVD}
+\index[general]{DVD Specific Director Directives }
+
+The following directives are added to the Director's Job resource.
+
+\label{WritePartAfterJob}
+\begin{description}
+\item [Write Part After Job = \lt{}yes|no\gt{}]
+ \index[general]{Write Part After Job }
+ If this directive is set to {\bf yes} (default {\bf no}), the
+ Volume written to a temporary spool file for the current Job will
+ be written to the DVD as a new part file
+ will be created after the job is finished.
+
+ It should be set to {\bf yes} when writing to devices that require a mount
+ (for example DVD), so you are sure that the current part, containing
+ this job's data, is written to the device, and that no data is left in
+ the temporary file on the hard disk. However, on some media, like DVD+R
+ and DVD-R, a lot of space (about 10Mb) is lost everytime a part is
+ written. So, if you run several jobs each after another, you could set
+ this directive to {\bf no} for all jobs, except the last one, to avoid
+ wasting too much space, but to ensure that the data is written to the
+ medium when all jobs are finished.
+
+ This directive is ignored for devices other than DVDs.
+\end{description}
+
+
+
+\label{DVDpoints}
+\section{Other Points}
+\index[general]{Points!Other }
+\index[general]{Other Points }
+
+\begin{itemize}
+\item Please be sure that you have any automatic DVD mounting
+ disabled before running Bacula -- this includes auto mounting
+ in /etc/fstab, hotplug, ... If the DVD is automatically
+ mounted by the OS, it will cause problems when Bacula tries
+ to mount/unmount the DVD.
+\item Please be sure that you the directive {\bf Write Part After Job}
+ set to {\bf yes}, otherwise the last part of the data to be
+ written will be left in the DVD spool file and not written to
+ the DVD. The DVD will then be unreadable until this last part
+ is written. If you have a series of jobs that are run one at
+ a time, you can turn this off until the last job is run.
+\item The current code is not designed to have multiple simultaneous
+ jobs writing to the DVD. As a consequence, please ensure that
+ only one DVD backup job runs at any time.
+\item Writing and reading of DVD+RW seems to work quite reliably
+ provided you are using the patched dvd+rw-mediainfo programs.
+ On the other hand, we do not have enough information to ensure
+ that DVD-RW or other forms of DVDs work correctly.
+\item DVD+RW supports only about 1000 overwrites. Every time you
+ mount the filesystem read/write will count as one write. This can
+ add up quickly, so it is best to mount your DVD+RW filesystem read-only.
+ Bacula does not need the DVD to be mounted read-write, since it uses
+ the raw device for writing.
+\item Reformatting DVD+RW 10-20 times can apparently make the medium
+ unusable. Normally you should not have to format or reformat
+ DVD+RW media. If it is necessary, current versions of growisofs will
+ do so automatically.
+\item We have had several problems writing to DVD-RWs (this does NOT
+ concern DVD+RW), because these media have two writing-modes: {\bf
+ Incremental Sequential} and {\bf Restricted Overwrite}. Depending on
+ your device and the media you use, one of these modes may not work
+ correctly (e.g. {\bf Incremental Sequential} does not work with my NEC
+ DVD-writer and Verbatim DVD-RW).
+
+ To retrieve the current mode of a DVD-RW, run:
+\begin{verbatim}
+ dvd+rw-mediainfo /dev/xxx
+\end{verbatim}
+ where you replace xxx with your DVD device name.
+
+ {\bf Mounted Media} line should give you the information.
+
+ To set the device to {\bf Restricted Overwrite} mode, run:
+\begin{verbatim}
+ dvd+rw-format /dev/xxx
+\end{verbatim}
+ If you want to set it back to the default {\bf Incremental Sequential} mode, run:
+\begin{verbatim}
+ dvd+rw-format -blank /dev/xxx
+\end{verbatim}
+
+\item Bacula only accepts to write to blank DVDs. To quickly blank a DVD+/-RW, run
+ this command:
+\begin{verbatim}
+ dd if=/dev/zero bs=1024 count=512 | growisofs -Z /dev/xxx=/dev/fd/0
+\end{verbatim}
+ Then, try to mount the device, if it cannot be mounted, it will be considered
+ as blank by Bacula, if it can be mounted, try a full blank (see below).
+
+\item If you wish to blank completely a DVD+/-RW, use the following:
+\begin{verbatim}
+ growisofs -Z /dev/xxx=/dev/zero
+\end{verbatim}
+ where you replace xxx with your DVD device name. However, note that this
+ blanks the whole DVD, which takes quite a long time (16 minutes on mine).
+\item DVD+RW and DVD-RW support only about 1000 overwrites (i.e. don't use the
+same medium for years if you don't want to have problems...).
+
+To write to the DVD the first time use:
+\begin{verbatim}
+ growisofs -Z /dev/xxx filename
+\end{verbatim}
+
+To add additional files (more parts use):
+
+\begin{verbatim}
+ growisofs -M /dev/xxx filename
+\end{verbatim}
+
+The option {\bf -use-the-force-luke=4gms} was added in growisofs 5.20 to
+override growisofs' behavior of always checking for the 4GB limit.
+Normally, this option is recommended for all Linux 2.6.8 kernels or
+greater, since these newer kernels can handle writing more than 4GB.
+See below for more details on this subject.
+
+\item For more information about DVD writing, please look at the
+\elink{dvd+rw-tools homepage}{http://fy.chalmers.se/~appro/linux/DVD+RW/}.
+
+\item According to bug \#912, bscan cannot read multi-volume DVDs. This is
+on our TODO list, but unless someone submits a patch it is not likely to be
+done any time in the near future. (9 Sept 2007).
+
+\end{itemize}
--- /dev/null
+% TODO: maybe get rid of centering
+
+\chapter{GNU Free Documentation License}
+\index[general]{GNU Free Documentation License}
+\index[general]{License!GNU Free Documentation}
+
+\label{label_fdl}
+
+ \begin{center}
+
+ Version 1.2, November 2002
+
+
+ Copyright \copyright 2000,2001,2002 Free Software Foundation, Inc.
+
+ \bigskip
+
+ 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+ \bigskip
+
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+\end{center}
+
+
+\begin{center}
+{\bf\large Preamble}
+\end{center}
+
+The purpose of this License is to make a manual, textbook, or other
+functional and useful document "free" in the sense of freedom: to
+assure everyone the effective freedom to copy and redistribute it,
+with or without modifying it, either commercially or noncommercially.
+Secondarily, this License preserves for the author and publisher a way
+to get credit for their work, while not being considered responsible
+for modifications made by others.
+
+This License is a kind of "copyleft", which means that derivative
+works of the document must themselves be free in the same sense. It
+complements the GNU General Public License, which is a copyleft
+license designed for free software.
+
+We have designed this License in order to use it for manuals for free
+software, because free software needs free documentation: a free
+program should come with manuals providing the same freedoms that the
+software does. But this License is not limited to software manuals;
+it can be used for any textual work, regardless of subject matter or
+whether it is published as a printed book. We recommend this License
+principally for works whose purpose is instruction or reference.
+
+
+\begin{center}
+{\Large\bf 1. APPLICABILITY AND DEFINITIONS}
+\end{center}
+
+This License applies to any manual or other work, in any medium, that
+contains a notice placed by the copyright holder saying it can be
+distributed under the terms of this License. Such a notice grants a
+world-wide, royalty-free license, unlimited in duration, to use that
+work under the conditions stated herein. The \textbf{"Document"}, below,
+refers to any such manual or work. Any member of the public is a
+licensee, and is addressed as \textbf{"you"}. You accept the license if you
+copy, modify or distribute the work in a way requiring permission
+under copyright law.
+
+A \textbf{"Modified Version"} of the Document means any work containing the
+Document or a portion of it, either copied verbatim, or with
+modifications and/or translated into another language.
+
+A \textbf{"Secondary Section"} is a named appendix or a front-matter section of
+the Document that deals exclusively with the relationship of the
+publishers or authors of the Document to the Document's overall subject
+(or to related matters) and contains nothing that could fall directly
+within that overall subject. (Thus, if the Document is in part a
+textbook of mathematics, a Secondary Section may not explain any
+mathematics.) The relationship could be a matter of historical
+connection with the subject or with related matters, or of legal,
+commercial, philosophical, ethical or political position regarding
+them.
+
+The \textbf{"Invariant Sections"} are certain Secondary Sections whose titles
+are designated, as being those of Invariant Sections, in the notice
+that says that the Document is released under this License. If a
+section does not fit the above definition of Secondary then it is not
+allowed to be designated as Invariant. The Document may contain zero
+Invariant Sections. If the Document does not identify any Invariant
+Sections then there are none.
+
+The \textbf{"Cover Texts"} are certain short passages of text that are listed,
+as Front-Cover Texts or Back-Cover Texts, in the notice that says that
+the Document is released under this License. A Front-Cover Text may
+be at most 5 words, and a Back-Cover Text may be at most 25 words.
+
+A \textbf{"Transparent"} copy of the Document means a machine-readable copy,
+represented in a format whose specification is available to the
+general public, that is suitable for revising the document
+straightforwardly with generic text editors or (for images composed of
+pixels) generic paint programs or (for drawings) some widely available
+drawing editor, and that is suitable for input to text formatters or
+for automatic translation to a variety of formats suitable for input
+to text formatters. A copy made in an otherwise Transparent file
+format whose markup, or absence of markup, has been arranged to thwart
+or discourage subsequent modification by readers is not Transparent.
+An image format is not Transparent if used for any substantial amount
+of text. A copy that is not "Transparent" is called \textbf{"Opaque"}.
+
+Examples of suitable formats for Transparent copies include plain
+ASCII without markup, Texinfo input format, LaTeX input format, SGML
+or XML using a publicly available DTD, and standard-conforming simple
+HTML, PostScript or PDF designed for human modification. Examples of
+transparent image formats include PNG, XCF and JPG. Opaque formats
+include proprietary formats that can be read and edited only by
+proprietary word processors, SGML or XML for which the DTD and/or
+processing tools are not generally available, and the
+machine-generated HTML, PostScript or PDF produced by some word
+processors for output purposes only.
+
+The \textbf{"Title Page"} means, for a printed book, the title page itself,
+plus such following pages as are needed to hold, legibly, the material
+this License requires to appear in the title page. For works in
+formats which do not have any title page as such, "Title Page" means
+the text near the most prominent appearance of the work's title,
+preceding the beginning of the body of the text.
+
+A section \textbf{"Entitled XYZ"} means a named subunit of the Document whose
+title either is precisely XYZ or contains XYZ in parentheses following
+text that translates XYZ in another language. (Here XYZ stands for a
+specific section name mentioned below, such as \textbf{"Acknowledgements"},
+\textbf{"Dedications"}, \textbf{"Endorsements"}, or \textbf{"History"}.)
+To \textbf{"Preserve the Title"}
+of such a section when you modify the Document means that it remains a
+section "Entitled XYZ" according to this definition.
+
+The Document may include Warranty Disclaimers next to the notice which
+states that this License applies to the Document. These Warranty
+Disclaimers are considered to be included by reference in this
+License, but only as regards disclaiming warranties: any other
+implication that these Warranty Disclaimers may have is void and has
+no effect on the meaning of this License.
+
+
+\begin{center}
+{\Large\bf 2. VERBATIM COPYING}
+\end{center}
+
+You may copy and distribute the Document in any medium, either
+commercially or noncommercially, provided that this License, the
+copyright notices, and the license notice saying this License applies
+to the Document are reproduced in all copies, and that you add no other
+conditions whatsoever to those of this License. You may not use
+technical measures to obstruct or control the reading or further
+copying of the copies you make or distribute. However, you may accept
+compensation in exchange for copies. If you distribute a large enough
+number of copies you must also follow the conditions in section 3.
+
+You may also lend copies, under the same conditions stated above, and
+you may publicly display copies.
+
+
+\begin{center}
+{\Large\bf 3. COPYING IN QUANTITY}
+\end{center}
+
+
+If you publish printed copies (or copies in media that commonly have
+printed covers) of the Document, numbering more than 100, and the
+Document's license notice requires Cover Texts, you must enclose the
+copies in covers that carry, clearly and legibly, all these Cover
+Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on
+the back cover. Both covers must also clearly and legibly identify
+you as the publisher of these copies. The front cover must present
+the full title with all words of the title equally prominent and
+visible. You may add other material on the covers in addition.
+Copying with changes limited to the covers, as long as they preserve
+the title of the Document and satisfy these conditions, can be treated
+as verbatim copying in other respects.
+
+If the required texts for either cover are too voluminous to fit
+legibly, you should put the first ones listed (as many as fit
+reasonably) on the actual cover, and continue the rest onto adjacent
+pages.
+
+If you publish or distribute Opaque copies of the Document numbering
+more than 100, you must either include a machine-readable Transparent
+copy along with each Opaque copy, or state in or with each Opaque copy
+a computer-network location from which the general network-using
+public has access to download using public-standard network protocols
+a complete Transparent copy of the Document, free of added material.
+If you use the latter option, you must take reasonably prudent steps,
+when you begin distribution of Opaque copies in quantity, to ensure
+that this Transparent copy will remain thus accessible at the stated
+location until at least one year after the last time you distribute an
+Opaque copy (directly or through your agents or retailers) of that
+edition to the public.
+
+It is requested, but not required, that you contact the authors of the
+Document well before redistributing any large number of copies, to give
+them a chance to provide you with an updated version of the Document.
+
+
+\begin{center}
+{\Large\bf 4. MODIFICATIONS}
+\end{center}
+
+You may copy and distribute a Modified Version of the Document under
+the conditions of sections 2 and 3 above, provided that you release
+the Modified Version under precisely this License, with the Modified
+Version filling the role of the Document, thus licensing distribution
+and modification of the Modified Version to whoever possesses a copy
+of it. In addition, you must do these things in the Modified Version:
+
+\begin{itemize}
+\item[A.]
+ Use in the Title Page (and on the covers, if any) a title distinct
+ from that of the Document, and from those of previous versions
+ (which should, if there were any, be listed in the History section
+ of the Document). You may use the same title as a previous version
+ if the original publisher of that version gives permission.
+
+\item[B.]
+ List on the Title Page, as authors, one or more persons or entities
+ responsible for authorship of the modifications in the Modified
+ Version, together with at least five of the principal authors of the
+ Document (all of its principal authors, if it has fewer than five),
+ unless they release you from this requirement.
+
+\item[C.]
+ State on the Title page the name of the publisher of the
+ Modified Version, as the publisher.
+
+\item[D.]
+ Preserve all the copyright notices of the Document.
+
+\item[E.]
+ Add an appropriate copyright notice for your modifications
+ adjacent to the other copyright notices.
+
+\item[F.]
+ Include, immediately after the copyright notices, a license notice
+ giving the public permission to use the Modified Version under the
+ terms of this License, in the form shown in the Addendum below.
+
+\item[G.]
+ Preserve in that license notice the full lists of Invariant Sections
+ and required Cover Texts given in the Document's license notice.
+
+\item[H.]
+ Include an unaltered copy of this License.
+
+\item[I.]
+ Preserve the section Entitled "History", Preserve its Title, and add
+ to it an item stating at least the title, year, new authors, and
+ publisher of the Modified Version as given on the Title Page. If
+ there is no section Entitled "History" in the Document, create one
+ stating the title, year, authors, and publisher of the Document as
+ given on its Title Page, then add an item describing the Modified
+ Version as stated in the previous sentence.
+
+\item[J.]
+ Preserve the network location, if any, given in the Document for
+ public access to a Transparent copy of the Document, and likewise
+ the network locations given in the Document for previous versions
+ it was based on. These may be placed in the "History" section.
+ You may omit a network location for a work that was published at
+ least four years before the Document itself, or if the original
+ publisher of the version it refers to gives permission.
+
+\item[K.]
+ For any section Entitled "Acknowledgements" or "Dedications",
+ Preserve the Title of the section, and preserve in the section all
+ the substance and tone of each of the contributor acknowledgements
+ and/or dedications given therein.
+
+\item[L.]
+ Preserve all the Invariant Sections of the Document,
+ unaltered in their text and in their titles. Section numbers
+ or the equivalent are not considered part of the section titles.
+
+\item[M.]
+ Delete any section Entitled "Endorsements". Such a section
+ may not be included in the Modified Version.
+
+\item[N.]
+ Do not retitle any existing section to be Entitled "Endorsements"
+ or to conflict in title with any Invariant Section.
+
+\item[O.]
+ Preserve any Warranty Disclaimers.
+\end{itemize}
+
+If the Modified Version includes new front-matter sections or
+appendices that qualify as Secondary Sections and contain no material
+copied from the Document, you may at your option designate some or all
+of these sections as invariant. To do this, add their titles to the
+list of Invariant Sections in the Modified Version's license notice.
+These titles must be distinct from any other section titles.
+
+You may add a section Entitled "Endorsements", provided it contains
+nothing but endorsements of your Modified Version by various
+parties--for example, statements of peer review or that the text has
+been approved by an organization as the authoritative definition of a
+standard.
+
+You may add a passage of up to five words as a Front-Cover Text, and a
+passage of up to 25 words as a Back-Cover Text, to the end of the list
+of Cover Texts in the Modified Version. Only one passage of
+Front-Cover Text and one of Back-Cover Text may be added by (or
+through arrangements made by) any one entity. If the Document already
+includes a cover text for the same cover, previously added by you or
+by arrangement made by the same entity you are acting on behalf of,
+you may not add another; but you may replace the old one, on explicit
+permission from the previous publisher that added the old one.
+
+The author(s) and publisher(s) of the Document do not by this License
+give permission to use their names for publicity for or to assert or
+imply endorsement of any Modified Version.
+
+
+\begin{center}
+{\Large\bf 5. COMBINING DOCUMENTS}
+\end{center}
+
+
+You may combine the Document with other documents released under this
+License, under the terms defined in section 4 above for modified
+versions, provided that you include in the combination all of the
+Invariant Sections of all of the original documents, unmodified, and
+list them all as Invariant Sections of your combined work in its
+license notice, and that you preserve all their Warranty Disclaimers.
+
+The combined work need only contain one copy of this License, and
+multiple identical Invariant Sections may be replaced with a single
+copy. If there are multiple Invariant Sections with the same name but
+different contents, make the title of each such section unique by
+adding at the end of it, in parentheses, the name of the original
+author or publisher of that section if known, or else a unique number.
+Make the same adjustment to the section titles in the list of
+Invariant Sections in the license notice of the combined work.
+
+In the combination, you must combine any sections Entitled "History"
+in the various original documents, forming one section Entitled
+"History"; likewise combine any sections Entitled "Acknowledgements",
+and any sections Entitled "Dedications". You must delete all sections
+Entitled "Endorsements".
+
+\begin{center}
+{\Large\bf 6. COLLECTIONS OF DOCUMENTS}
+\end{center}
+
+You may make a collection consisting of the Document and other documents
+released under this License, and replace the individual copies of this
+License in the various documents with a single copy that is included in
+the collection, provided that you follow the rules of this License for
+verbatim copying of each of the documents in all other respects.
+
+You may extract a single document from such a collection, and distribute
+it individually under this License, provided you insert a copy of this
+License into the extracted document, and follow this License in all
+other respects regarding verbatim copying of that document.
+
+
+\begin{center}
+{\Large\bf 7. AGGREGATION WITH INDEPENDENT WORKS}
+\end{center}
+
+
+A compilation of the Document or its derivatives with other separate
+and independent documents or works, in or on a volume of a storage or
+distribution medium, is called an "aggregate" if the copyright
+resulting from the compilation is not used to limit the legal rights
+of the compilation's users beyond what the individual works permit.
+When the Document is included in an aggregate, this License does not
+apply to the other works in the aggregate which are not themselves
+derivative works of the Document.
+
+If the Cover Text requirement of section 3 is applicable to these
+copies of the Document, then if the Document is less than one half of
+the entire aggregate, the Document's Cover Texts may be placed on
+covers that bracket the Document within the aggregate, or the
+electronic equivalent of covers if the Document is in electronic form.
+Otherwise they must appear on printed covers that bracket the whole
+aggregate.
+
+
+\begin{center}
+{\Large\bf 8. TRANSLATION}
+\end{center}
+
+
+Translation is considered a kind of modification, so you may
+distribute translations of the Document under the terms of section 4.
+Replacing Invariant Sections with translations requires special
+permission from their copyright holders, but you may include
+translations of some or all Invariant Sections in addition to the
+original versions of these Invariant Sections. You may include a
+translation of this License, and all the license notices in the
+Document, and any Warranty Disclaimers, provided that you also include
+the original English version of this License and the original versions
+of those notices and disclaimers. In case of a disagreement between
+the translation and the original version of this License or a notice
+or disclaimer, the original version will prevail.
+
+If a section in the Document is Entitled "Acknowledgements",
+"Dedications", or "History", the requirement (section 4) to Preserve
+its Title (section 1) will typically require changing the actual
+title.
+
+
+\begin{center}
+{\Large\bf 9. TERMINATION}
+\end{center}
+
+
+You may not copy, modify, sublicense, or distribute the Document except
+as expressly provided for under this License. Any other attempt to
+copy, modify, sublicense or distribute the Document is void, and will
+automatically terminate your rights under this License. However,
+parties who have received copies, or rights, from you under this
+License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+
+\begin{center}
+{\Large\bf 10. FUTURE REVISIONS OF THIS LICENSE}
+\end{center}
+
+
+The Free Software Foundation may publish new, revised versions
+of the GNU Free Documentation License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns. See
+http://www.gnu.org/copyleft/.
+
+Each version of the License is given a distinguishing version number.
+If the Document specifies that a particular numbered version of this
+License "or any later version" applies to it, you have the option of
+following the terms and conditions either of that specified version or
+of any later version that has been published (not as a draft) by the
+Free Software Foundation. If the Document does not specify a version
+number of this License, you may choose any version ever published (not
+as a draft) by the Free Software Foundation.
+
+
+\begin{center}
+{\Large\bf ADDENDUM: How to use this License for your documents}
+% TODO: this is too long for table of contents
+\end{center}
+
+To use this License in a document you have written, include a copy of
+the License in the document and put the following copyright and
+license notices just after the title page:
+
+\bigskip
+\begin{quote}
+ Copyright \copyright YEAR YOUR NAME.
+ Permission is granted to copy, distribute and/or modify this document
+ under the terms of the GNU Free Documentation License, Version 1.2
+ or any later version published by the Free Software Foundation;
+ with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
+ A copy of the license is included in the section entitled "GNU
+ Free Documentation License".
+\end{quote}
+\bigskip
+
+If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
+replace the "with...Texts." line with this:
+
+\bigskip
+\begin{quote}
+ with the Invariant Sections being LIST THEIR TITLES, with the
+ Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.
+\end{quote}
+\bigskip
+
+If you have Invariant Sections without Cover Texts, or some other
+combination of the three, merge those two alternatives to suit the
+situation.
+
+If your document contains nontrivial examples of program code, we
+recommend releasing these examples in parallel under your choice of
+free software license, such as the GNU General Public License,
+to permit their use in free software.
+
+%---------------------------------------------------------------------
--- /dev/null
+%%
+%%
+
+\section*{GNU General Public License}
+\label{GplChapter}
+\index[general]{GNU General Public License }
+\index[general]{License!GNU General Public }
+
+\elink{image of a Philosophical
+GNU}{http://www.gnu.org/graphics/philosophicalgnu.html}
+
+\begin{itemize}
+\item
+ \elink{What to do if you see a possible GPL
+ violation}{http://www.gnu.org/copyleft/gpl-violation.html}
+\item
+ \elink{Translations of the
+ GPL}{http://www.gnu.org/copyleft/copyleft.html\#translations}
+\end{itemize}
+
+
+\section{Table of Contents}
+\index[general]{Table of Contents }
+\index[general]{Contents!Table of }
+
+\begin{itemize}
+\item
+ \label{TOC1}
+ \ilink{GNU GENERAL PUBLIC LICENSE}{SEC1}
+
+\begin{itemize}
+\item
+ \label{TOC2}
+ \ilink{Preamble}{SEC2}
+\item
+ \label{TOC3}
+ \ilink{TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND
+MODIFICATION}{SEC3}
+\item
+ \label{TOC4}
+ \ilink{How to Apply These Terms to Your New Programs}{SEC4}
+\end{itemize}
+
+\end{itemize}
+
+
+\section{GNU GENERAL PUBLIC LICENSE}
+\label{SEC1}
+\index[general]{GNU GENERAL PUBLIC LICENSE }
+\index[general]{LICENSE!GNU GENERAL PUBLIC }
+
+Version 2, June 1991
+
+\footnotesize
+\begin{verbatim}
+Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+\end{verbatim}
+\normalsize
+
+\section{Preamble}
+\label{SEC2}
+\index[general]{Preamble }
+
+The licenses for most software are designed to take away your freedom to share
+and change it. By contrast, the GNU General Public License is intended to
+guarantee your freedom to share and change free software\verb:--:to make sure the
+software is free for all its users. This General Public License applies to
+most of the Free Software Foundation's software and to any other program whose
+authors commit to using it. (Some other Free Software Foundation software is
+covered by the GNU Library General Public License instead.) You can apply it
+to your programs, too.
+
+When we speak of free software, we are referring to freedom, not price. Our
+General Public Licenses are designed to make sure that you have the freedom to
+distribute copies of free software (and charge for this service if you wish),
+that you receive source code or can get it if you want it, that you can change
+the software or use pieces of it in new free programs; and that you know you
+can do these things.
+
+To protect your rights, we need to make restrictions that forbid anyone to
+deny you these rights or to ask you to surrender the rights. These
+restrictions translate to certain responsibilities for you if you distribute
+copies of the software, or if you modify it.
+
+For example, if you distribute copies of such a program, whether gratis or for
+a fee, you must give the recipients all the rights that you have. You must
+make sure that they, too, receive or can get the source code. And you must
+show them these terms so they know their rights.
+
+We protect your rights with two steps: (1) copyright the software, and (2)
+offer you this license which gives you legal permission to copy, distribute
+and/or modify the software.
+
+Also, for each author's protection and ours, we want to make certain that
+everyone understands that there is no warranty for this free software. If the
+software is modified by someone else and passed on, we want its recipients to
+know that what they have is not the original, so that any problems introduced
+by others will not reflect on the original authors' reputations.
+
+Finally, any free program is threatened constantly by software patents. We
+wish to avoid the danger that redistributors of a free program will
+individually obtain patent licenses, in effect making the program proprietary.
+To prevent this, we have made it clear that any patent must be licensed for
+everyone's free use or not licensed at all.
+
+The precise terms and conditions for copying, distribution and modification
+follow.
+
+\section{TERMS AND CONDITIONS}
+\label{SEC3}
+\index[general]{CONDITIONS!TERMS AND }
+\index[general]{TERMS AND CONDITIONS }
+
+TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+{\bf 0.} This License applies to any program or other work which contains a
+notice placed by the copyright holder saying it may be distributed under the
+terms of this General Public License. The "Program", below, refers to any
+such program or work, and a "work based on the Program" means either the
+Program or any derivative work under copyright law: that is to say, a work
+containing the Program or a portion of it, either verbatim or with
+modifications and/or translated into another language. (Hereinafter,
+translation is included without limitation in the term "modification".) Each
+licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not covered
+by this License; they are outside its scope. The act of running the Program is
+not restricted, and the output from the Program is covered only if its
+contents constitute a work based on the Program (independent of having been
+made by running the Program). Whether that is true depends on what the Program
+does.
+
+{\bf 1.} You may copy and distribute verbatim copies of the Program's source
+code as you receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice and
+disclaimer of warranty; keep intact all the notices that refer to this License
+and to the absence of any warranty; and give any other recipients of the
+Program a copy of this License along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and you may
+at your option offer warranty protection in exchange for a fee.
+
+{\bf 2.} You may modify your copy or copies of the Program or any portion of
+it, thus forming a work based on the Program, and copy and distribute such
+modifications or work under the terms of Section 1 above, provided that you
+also meet all of these conditions:
+
+\begin{itemize}
+\item {\bf a)} You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+\item {\bf b)} You must cause any work that you distribute or publish, that
+ in whole or in part contains or is derived from the Program or any part
+ thereof, to be licensed as a whole at no charge to all third parties under
+ the terms of this License.
+
+\item {\bf c)} If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such interactive use in
+ the most ordinary way, to print or display an announcement including an
+ appropriate copyright notice and a notice that there is no warranty (or else,
+ saying that you provide a warranty) and that users may redistribute the
+ program under these conditions, and telling the user how to view a copy of
+ this License. (Exception: if the Program itself is interactive but does not
+ normally print such an announcement, your work based on the Program is not
+ required to print an announcement.)
+\end{itemize}
+
+These requirements apply to the modified work as a whole. If identifiable
+sections of that work are not derived from the Program, and can be reasonably
+considered independent and separate works in themselves, then this License,
+and its terms, do not apply to those sections when you distribute them as
+separate works. But when you distribute the same sections as part of a whole
+which is a work based on the Program, the distribution of the whole must be on
+the terms of this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest your
+rights to work written entirely by you; rather, the intent is to exercise the
+right to control the distribution of derivative or collective works based on
+the Program.
+
+In addition, mere aggregation of another work not based on the Program with
+the Program (or with a work based on the Program) on a volume of a storage or
+distribution medium does not bring the other work under the scope of this
+License.
+
+{\bf 3.} You may copy and distribute the Program (or a work based on it, under
+Section 2) in object code or executable form under the terms of Sections 1 and
+2 above provided that you also do one of the following:
+
+\begin{itemize}
+\item {\bf a)} Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections 1 and 2
+ above on a medium customarily used for software interchange; or,
+
+\item {\bf b)} Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your cost of
+ physically performing source distribution, a complete machine-readable copy of
+ the corresponding source code, to be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+\item {\bf c)} Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is allowed only
+ for noncommercial distribution and only if you received the program in object
+ code or executable form with such an offer, in accord with Subsection b
+ above.)
+\end{itemize}
+
+The source code for a work means the preferred form of the work for making
+modifications to it. For an executable work, complete source code means all
+the source code for all modules it contains, plus any associated interface
+definition files, plus the scripts used to control compilation and
+installation of the executable. However, as a special exception, the source
+code distributed need not include anything that is normally distributed (in
+either source or binary form) with the major components (compiler, kernel, and
+so on) of the operating system on which the executable runs, unless that
+component itself accompanies the executable.
+
+If distribution of executable or object code is made by offering access to
+copy from a designated place, then offering equivalent access to copy the
+source code from the same place counts as distribution of the source code,
+even though third parties are not compelled to copy the source along with the
+object code.
+
+{\bf 4.} You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt otherwise to
+copy, modify, sublicense or distribute the Program is void, and will
+automatically terminate your rights under this License. However, parties who
+have received copies, or rights, from you under this License will not have
+their licenses terminated so long as such parties remain in full compliance.
+
+{\bf 5.} You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or distribute
+the Program or its derivative works. These actions are prohibited by law if
+you do not accept this License. Therefore, by modifying or distributing the
+Program (or any work based on the Program), you indicate your acceptance of
+this License to do so, and all its terms and conditions for copying,
+distributing or modifying the Program or works based on it.
+
+{\bf 6.} Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the original
+licensor to copy, distribute or modify the Program subject to these terms and
+conditions. You may not impose any further restrictions on the recipients'
+exercise of the rights granted herein. You are not responsible for enforcing
+compliance by third parties to this License.
+
+{\bf 7.} If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or otherwise)
+that contradict the conditions of this License, they do not excuse you from
+the conditions of this License. If you cannot distribute so as to satisfy
+simultaneously your obligations under this License and any other pertinent
+obligations, then as a consequence you may not distribute the Program at all.
+For example, if a patent license would not permit royalty-free redistribution
+of the Program by all those who receive copies directly or indirectly through
+you, then the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under any
+particular circumstance, the balance of the section is intended to apply and
+the section as a whole is intended to apply in other circumstances.
+
+It is not the purpose of this section to induce you to infringe any patents or
+other property right claims or to contest validity of any such claims; this
+section has the sole purpose of protecting the integrity of the free software
+distribution system, which is implemented by public license practices. Many
+people have made generous contributions to the wide range of software
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+distribute software through any other system and a licensee cannot impose that
+choice.
+
+This section is intended to make thoroughly clear what is believed to be a
+consequence of the rest of this License.
+
+{\bf 8.} If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the original
+copyright holder who places the Program under this License may add an explicit
+geographical distribution limitation excluding those countries, so that
+distribution is permitted only in or among countries not thus excluded. In
+such case, this License incorporates the limitation as if written in the body
+of this License.
+
+{\bf 9.} The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will be
+similar in spirit to the present version, but may differ in detail to address
+new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any later
+version", you have the option of following the terms and conditions either of
+that version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of this License,
+you may choose any version ever published by the Free Software Foundation.
+
+{\bf 10.} If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author to
+ask for permission. For software which is copyrighted by the Free Software
+Foundation, write to the Free Software Foundation; we sometimes make
+exceptions for this. Our decision will be guided by the two goals of
+preserving the free status of all derivatives of our free software and of
+promoting the sharing and reuse of software generally.
+
+{\bf NO WARRANTY}
+
+{\bf 11.} BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE
+THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR
+IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO
+THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM
+PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+CORRECTION.
+
+{\bf 12.} IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO
+LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR
+THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+END OF TERMS AND CONDITIONS
+
+\section{How to Apply These Terms to Your New Programs}
+\label{SEC4}
+\index[general]{Programs!How to Apply These Terms to Your New }
+\index[general]{How to Apply These Terms to Your New Programs }
+
+If you develop a new program, and you want it to be of the greatest possible
+use to the public, the best way to achieve this is to make it free software
+which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach
+them to the start of each source file to most effectively convey the exclusion
+of warranty; and each file should have at least the "copyright" line and a
+pointer to where the full notice is found.
+
+\footnotesize
+\begin{verbatim}
+{\em one line to give the program's name and an idea of what it does.}
+Copyright (C) {\em yyyy} {\em name of author}
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+02110-1301 USA
+\end{verbatim}
+\normalsize
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this when it
+starts in an interactive mode:
+
+\footnotesize
+\begin{verbatim}
+Gnomovision version 69, Copyright (C) {\em year} {\em name of author}
+Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
+type `show w'. This is free software, and you are welcome
+to redistribute it under certain conditions; type `show c'
+for details.
+\end{verbatim}
+\normalsize
+
+The hypothetical commands {\tt `show w'} and {\tt `show c'} should show the
+appropriate parts of the General Public License. Of course, the commands you
+use may be called something other than {\tt `show w'} and {\tt `show c'}; they
+could even be mouse-clicks or menu items\verb:--:whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+\footnotesize
+\begin{verbatim}
+Yoyodyne, Inc., hereby disclaims all copyright
+interest in the program `Gnomovision'
+(which makes passes at compilers) written
+by James Hacker.
+{\em signature of Ty Coon}, 1 April 1989
+Ty Coon, President of Vice
+\end{verbatim}
+\normalsize
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General Public
+License instead of this License.
+Return to
+\elink{GNU's home page}{http://www.gnu.org/home.html}.
+
+FSF \& GNU inquiries \& questions to
+\elink{gnu@gnu.org}{mailto:gnu@gnu.org}. Other
+\elink{ways to contact}{http://www.gnu.org/home.html\#ContactInfo} the FSF.
+
+Comments on these web pages to
+\elink{webmasters@www.gnu.org}{mailto:webmasters@www.gnu.org}, send other
+questions to
+\elink{gnu@gnu.org}{mailto:gnu@gnu.org}.
+
+Copyright notice above.
+Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+Boston, MA 02110-1301 USA
+
+Updated: 3 Jan 2000 rms
--- /dev/null
+# This file serves as a place to put initialization code and constants to
+# affect the behavior of latex2html for generating the bacula manuals.
+
+# $LINKPOINT specifies what filename to use to link to when creating
+# index.html. Not that this is a hard link.
+$LINKPOINT='"$OVERALL_TITLE"';
+
+
+# The following must be the last line of this file.
+1;
--- /dev/null
+%%
+%%
+
+\section*{GNU Lesser General Public License}
+\label{LesserChapter}
+\index[general]{GNU Lesser General Public License }
+\index[general]{License!GNU Lesser General Public }
+
+\elink{image of a Philosophical GNU}
+{\url{http://www.gnu.org/graphics/philosophicalgnu.html}} [
+\elink{English}{\url{http://www.gnu.org/copyleft/lesser.html}} |
+\elink{Japanese}{\url{http://www.gnu.org/copyleft/lesser.ja.html}} ]
+
+\begin{itemize}
+\item
+ \elink{Why you shouldn't use the Lesser GPL for your next
+ library}{\url{http://www.gnu.org/philosophy/why-not-lgpl.html}}
+\item
+ \elink{What to do if you see a possible LGPL
+ violation}{\url{http://www.gnu.org/copyleft/gpl-violation.html}}
+\item
+ \elink{Translations of the LGPL}
+{\url{http://www.gnu.org/copyleft/copyleft.html\#translationsLGPL}}
+\item The GNU Lesser General Public License as a
+ \elink{text file}{\url{http://www.gnu.org/copyleft/lesser.txt}}
+\item The GNU Lesser General Public License as a
+ \elink{Texinfo}{\url{http://www.gnu.org/copyleft/lesser.texi}} file
+ \end{itemize}
+
+
+This GNU Lesser General Public License counts as the successor of the GNU
+Library General Public License. For an explanation of why this change was
+necessary, read the
+\elink{Why you shouldn't use the Lesser GPL for your next
+library}{\url{http://www.gnu.org/philosophy/why-not-lgpl.html}} article.
+
+\section{Table of Contents}
+\index[general]{Table of Contents }
+\index[general]{Contents!Table of }
+
+\begin{itemize}
+\item
+ \label{TOC12}
+ \ilink{GNU LESSER GENERAL PUBLIC LICENSE}{SEC12}
+
+\begin{itemize}
+\item
+ \label{TOC23}
+ \ilink{Preamble}{SEC23}
+\item
+ \label{TOC34}
+ \ilink{TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND
+MODIFICATION}{SEC34}
+\item
+ \label{TOC45}
+ \ilink{How to Apply These Terms to Your New Libraries}{SEC45}
+\end{itemize}
+
+\end{itemize}
+
+
+\section{GNU LESSER GENERAL PUBLIC LICENSE}
+\label{SEC12}
+\index[general]{LICENSE!GNU LESSER GENERAL PUBLIC }
+\index[general]{GNU LESSER GENERAL PUBLIC LICENSE }
+
+Version 2.1, February 1999
+
+\footnotesize
+\begin{verbatim}
+Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+[This is the first released version of the Lesser GPL. It also counts
+ as the successor of the GNU Library Public License, version 2, hence
+ the version number 2.1.]
+\end{verbatim}
+\normalsize
+
+\section{Preamble}
+\label{SEC23}
+\index[general]{Preamble }
+
+The licenses for most software are designed to take away your freedom to share
+and change it. By contrast, the GNU General Public Licenses are intended to
+guarantee your freedom to share and change free software\verb:--:to make sure the
+software is free for all its users.
+
+This license, the Lesser General Public License, applies to some specially
+designated software packages\verb:--:typically libraries\verb:--:of the Free Software
+Foundation and other authors who decide to use it. You can use it too, but we
+suggest you first think carefully about whether this license or the ordinary
+General Public License is the better strategy to use in any particular case,
+based on the explanations below.
+
+When we speak of free software, we are referring to freedom of use, not price.
+Our General Public Licenses are designed to make sure that you have the
+freedom to distribute copies of free software (and charge for this service if
+you wish); that you receive source code or can get it if you want it; that you
+can change the software and use pieces of it in new free programs; and that
+you are informed that you can do these things.
+
+To protect your rights, we need to make restrictions that forbid distributors
+to deny you these rights or to ask you to surrender these rights. These
+restrictions translate to certain responsibilities for you if you distribute
+copies of the library or if you modify it.
+
+For example, if you distribute copies of the library, whether gratis or for a
+fee, you must give the recipients all the rights that we gave you. You must
+make sure that they, too, receive or can get the source code. If you link
+other code with the library, you must provide complete object files to the
+recipients, so that they can relink them with the library after making changes
+to the library and recompiling it. And you must show them these terms so they
+know their rights.
+
+We protect your rights with a two-step method: (1) we copyright the library,
+and (2) we offer you this license, which gives you legal permission to copy,
+distribute and/or modify the library.
+
+To protect each distributor, we want to make it very clear that there is no
+warranty for the free library. Also, if the library is modified by someone
+else and passed on, the recipients should know that what they have is not the
+original version, so that the original author's reputation will not be
+affected by problems that might be introduced by others.
+
+Finally, software patents pose a constant threat to the existence of any free
+program. We wish to make sure that a company cannot effectively restrict the
+users of a free program by obtaining a restrictive license from a patent
+holder. Therefore, we insist that any patent license obtained for a version of
+the library must be consistent with the full freedom of use specified in this
+license.
+
+Most GNU software, including some libraries, is covered by the ordinary GNU
+General Public License. This license, the GNU Lesser General Public License,
+applies to certain designated libraries, and is quite different from the
+ordinary General Public License. We use this license for certain libraries in
+order to permit linking those libraries into non-free programs.
+
+When a program is linked with a library, whether statically or using a shared
+library, the combination of the two is legally speaking a combined work, a
+derivative of the original library. The ordinary General Public License
+therefore permits such linking only if the entire combination fits its
+criteria of freedom. The Lesser General Public License permits more lax
+criteria for linking other code with the library.
+
+We call this license the "Lesser" General Public License because it does
+Less to protect the user's freedom than the ordinary General Public License.
+It also provides other free software developers Less of an advantage over
+competing non-free programs. These disadvantages are the reason we use the
+ordinary General Public License for many libraries. However, the Lesser
+license provides advantages in certain special circumstances.
+
+For example, on rare occasions, there may be a special need to encourage the
+widest possible use of a certain library, so that it becomes a de-facto
+standard. To achieve this, non-free programs must be allowed to use the
+library. A more frequent case is that a free library does the same job as
+widely used non-free libraries. In this case, there is little to gain by
+limiting the free library to free software only, so we use the Lesser General
+Public License.
+
+In other cases, permission to use a particular library in non-free programs
+enables a greater number of people to use a large body of free software. For
+example, permission to use the GNU C Library in non-free programs enables many
+more people to use the whole GNU operating system, as well as its variant, the
+GNU/Linux operating system.
+
+Although the Lesser General Public License is Less protective of the users'
+freedom, it does ensure that the user of a program that is linked with the
+Library has the freedom and the wherewithal to run that program using a
+modified version of the Library.
+
+The precise terms and conditions for copying, distribution and modification
+follow. Pay close attention to the difference between a "work based on the
+library" and a "work that uses the library". The former contains code
+derived from the library, whereas the latter must be combined with the library
+in order to run.
+
+\section{TERMS AND CONDITIONS}
+\label{SEC34}
+\index[general]{CONDITIONS!TERMS AND }
+\index[general]{TERMS AND CONDITIONS }
+
+TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+{\bf 0.} This License Agreement applies to any software library or other
+program which contains a notice placed by the copyright holder or other
+authorized party saying it may be distributed under the terms of this Lesser
+General Public License (also called "this License"). Each licensee is
+addressed as "you".
+
+A "library" means a collection of software functions and/or data prepared so
+as to be conveniently linked with application programs (which use some of
+those functions and data) to form executables.
+
+The "Library", below, refers to any such software library or work which has
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+
+"Source code" for a work means the preferred form of the work for making
+modifications to it. For a library, complete source code means all the source
+code for all modules it contains, plus any associated interface definition
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+
+Activities other than copying, distribution and modification are not covered
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+the use of the Library in a tool for writing it). Whether that is true depends
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+
+{\bf 1.} You may copy and distribute verbatim copies of the Library's complete
+source code as you receive it, in any medium, provided that you conspicuously
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+
+You may charge a fee for the physical act of transferring a copy, and you may
+at your option offer warranty protection in exchange for a fee.
+
+{\bf 2.} You may modify your copy or copies of the Library or any portion of
+it, thus forming a work based on the Library, and copy and distribute such
+modifications or work under the terms of Section 1 above, provided that you
+also meet all of these conditions:
+
+\begin{itemize}
+\item {\bf a)} The modified work must itself be a software library.
+\item {\bf b)} You must cause the files modified to carry prominent notices
+ stating that you changed the files and the date of any change.
+\item {\bf c)} You must cause the whole of the work to be licensed at no
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+\item {\bf d)} If a facility in the modified Library refers to a function or
+ a table of data to be supplied by an application program that uses the
+ facility, other than as an argument passed when the facility is invoked, then
+you must make a good faith effort to ensure that, in the event an application
+does not supply such function or table, the facility still operates, and
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+
+(For example, a function in a library to compute square roots has a purpose
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+
+These requirements apply to the modified work as a whole. If identifiable
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+
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+\end{itemize}
+
+{\bf 3.} You may opt to apply the terms of the ordinary GNU General Public
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+Once this change is made in a given copy, it is irreversible for that copy, so
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+{\bf 5.} A program that contains no derivative of any portion of the Library,
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+However, linking a "work that uses the Library" with the Library creates an
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+
+\begin{itemize}
+\item {\bf a)} Accompany the work with the complete corresponding
+ machine-readable source code for the Library including whatever changes were
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+\item {\bf b)} Use a suitable shared library mechanism for linking with the
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+ \end{itemize}
+
+For an executable, the required form of the "work that uses the Library"
+must include any data and utility programs needed for reproducing the
+executable from it. However, as a special exception, the materials to be
+distributed need not include anything that is normally distributed (in either
+source or binary form) with the major components (compiler, kernel, and so on)
+of the operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+It may happen that this requirement contradicts the license restrictions of
+other proprietary libraries that do not normally accompany the operating
+system. Such a contradiction means you cannot use both them and the Library
+together in an executable that you distribute.
+
+{\bf 7.} You may place library facilities that are a work based on the Library
+side-by-side in a single library together with other library facilities not
+covered by this License, and distribute such a combined library, provided that
+the separate distribution of the work based on the Library and of the other
+library facilities is otherwise permitted, and provided that you do these two
+things:
+
+\begin{itemize}
+\item {\bf a)} Accompany the combined library with a copy of the same work
+ based on the Library, uncombined with any other library facilities. This must
+ be distributed under the terms of the Sections above.
+\item {\bf b)} Give prominent notice with the combined library of the fact
+ that part of it is a work based on the Library, and explaining where to find
+ the accompanying uncombined form of the same work.
+\end{itemize}
+
+{\bf 8.} You may not copy, modify, sublicense, link with, or distribute the
+Library except as expressly provided under this License. Any attempt otherwise
+to copy, modify, sublicense, link with, or distribute the Library is void, and
+will automatically terminate your rights under this License. However, parties
+who have received copies, or rights, from you under this License will not have
+their licenses terminated so long as such parties remain in full compliance.
+
+{\bf 9.} You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or distribute
+the Library or its derivative works. These actions are prohibited by law if
+you do not accept this License. Therefore, by modifying or distributing the
+Library (or any work based on the Library), you indicate your acceptance of
+this License to do so, and all its terms and conditions for copying,
+distributing or modifying the Library or works based on it.
+
+{\bf 10.} Each time you redistribute the Library (or any work based on the
+Library), the recipient automatically receives a license from the original
+licensor to copy, distribute, link with or modify the Library subject to these
+terms and conditions. You may not impose any further restrictions on the
+recipients' exercise of the rights granted herein. You are not responsible for
+enforcing compliance by third parties with this License.
+
+{\bf 11.} If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or otherwise)
+that contradict the conditions of this License, they do not excuse you from
+the conditions of this License. If you cannot distribute so as to satisfy
+simultaneously your obligations under this License and any other pertinent
+obligations, then as a consequence you may not distribute the Library at all.
+For example, if a patent license would not permit royalty-free redistribution
+of the Library by all those who receive copies directly or indirectly through
+you, then the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Library.
+
+If any portion of this section is held invalid or unenforceable under any
+particular circumstance, the balance of the section is intended to apply, and
+the section as a whole is intended to apply in other circumstances.
+
+It is not the purpose of this section to induce you to infringe any patents or
+other property right claims or to contest validity of any such claims; this
+section has the sole purpose of protecting the integrity of the free software
+distribution system which is implemented by public license practices. Many
+people have made generous contributions to the wide range of software
+distributed through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing to
+distribute software through any other system and a licensee cannot impose that
+choice.
+
+This section is intended to make thoroughly clear what is believed to be a
+consequence of the rest of this License.
+
+{\bf 12.} If the distribution and/or use of the Library is restricted in
+certain countries either by patents or by copyrighted interfaces, the original
+copyright holder who places the Library under this License may add an explicit
+geographical distribution limitation excluding those countries, so that
+distribution is permitted only in or among countries not thus excluded. In
+such case, this License incorporates the limitation as if written in the body
+of this License.
+
+{\bf 13.} The Free Software Foundation may publish revised and/or new versions
+of the Lesser General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Library
+specifies a version number of this License which applies to it and "any later
+version", you have the option of following the terms and conditions either of
+that version or of any later version published by the Free Software
+Foundation. If the Library does not specify a license version number, you may
+choose any version ever published by the Free Software Foundation.
+
+{\bf 14.} If you wish to incorporate parts of the Library into other free
+programs whose distribution conditions are incompatible with these, write to
+the author to ask for permission. For software which is copyrighted by the
+Free Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals of
+preserving the free status of all derivatives of our free software and of
+promoting the sharing and reuse of software generally.
+
+{\bf NO WARRANTY}
+
+{\bf 15.} BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE
+THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR
+IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO
+THE QUALITY AND PERFORMANCE OF THE LIBRARY IS WITH YOU. SHOULD THE LIBRARY
+PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+CORRECTION.
+
+{\bf 16.} IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE LIBRARY (INCLUDING BUT NOT LIMITED TO
+LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR
+THIRD PARTIES OR A FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+END OF TERMS AND CONDITIONS
+
+\section{How to Apply These Terms to Your New Libraries}
+\label{SEC45}
+\index[general]{Libraries!How to Apply These Terms to Your New }
+\index[general]{How to Apply These Terms to Your New Libraries }
+
+
+If you develop a new library, and you want it to be of the greatest possible
+use to the public, we recommend making it free software that everyone can
+redistribute and change. You can do so by permitting redistribution under
+these terms (or, alternatively, under the terms of the ordinary General Public
+License).
+
+To apply these terms, attach the following notices to the library. It is
+safest to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+\footnotesize
+\begin{verbatim}
+{\it one line to give the library's name and an idea of what it does.}
+Copyright (C) {\it year} {\it name of author}
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Lesser General Public License for more details.
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+\end{verbatim}
+\normalsize
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the library, if
+necessary. Here is a sample; alter the names:
+
+\footnotesize
+\begin{verbatim}
+Yoyodyne, Inc., hereby disclaims all copyright interest in
+the library "Frob" (a library for tweaking knobs) written
+by James Random Hacker.
+{\it signature of Ty Coon}, 1 April 1990
+Ty Coon, President of Vice
+\end{verbatim}
+\normalsize
+
+That's all there is to it!
+Return to
+\elink{GNU's home page}{\url{http://www.gnu.org/home.html}}.
+
+FSF \& GNU inquiries \& questions to
+\elink{gnu@gnu.org}{mailto:gnu@gnu.org}. Other
+\elink{ways to contact}{\url{http://www.gnu.org/home.html\#ContactInfo}} the FSF.
+
+Comments on these web pages to
+\elink{webmasters@www.gnu.org}{mailto:webmasters@www.gnu.org}, send other
+questions to
+\elink{gnu@gnu.org}{mailto:gnu@gnu.org}.
+
+Copyright notice above.
+Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+Boston, MA 02110-1301 USA
+USA
+
+Updated: 27 Nov 2000 paulv
--- /dev/null
+%%
+%%
+
+\chapter{Bacula Copyright, Trademark, and Licenses}
+\label{LicenseChapter}
+\index[general]{Licenses!Bacula Copyright Trademark}
+\index[general]{Bacula Copyright, Trademark, and Licenses}
+
+There are a number of different licenses that are used in Bacula.
+If you have a printed copy of this manual, the details of each of
+the licenses referred to in this chapter can be found in the
+online version of the manual at
+\elink{http://www.bacula.org}{\url{http://www.bacula.org}}.
+
+\section{FDL}
+\index[general]{FDL }
+
+The GNU Free Documentation License (FDL) is used for this manual,
+which is a free and open license. This means that you may freely
+reproduce it and even make changes to it. However, rather than
+distribute your own version of this manual, we would much prefer
+if you would send any corrections or changes to the Bacula project.
+
+The most recent version of the manual can always be found online
+at \elink{http://www.bacula.org}{\url{http://www.bacula.org}}.
+
+\section{GPL}
+\index[general]{GPL }
+
+The vast bulk of the source code is released under the
+\ilink{GNU General Public License version 2.}{GplChapter}.
+
+Most of this code is copyrighted: Copyright \copyright 2000-2009
+Free Software Foundation Europe e.V.
+
+Portions may be copyrighted by other people. These files are released
+under different licenses which are compatible with the Bacula GPLv2 license.
+
+\section{LGPL}
+\index[general]{LGPL }
+
+Some of the Bacula library source code is released under the
+\ilink{GNU Lesser General Public License.}{LesserChapter} This
+permits third parties to use these parts of our code in their proprietary
+programs to interface to Bacula.
+
+\section{Public Domain}
+\index[general]{Domain!Public }
+\index[general]{Public Domain }
+
+Some of the Bacula code, or code that Bacula references, has been released
+to the public domain. E.g. md5.c, SQLite.
+
+\section{Trademark}
+\index[general]{Trademark }
+
+Bacula\raisebox{.6ex}{\textsuperscript{\textregistered}} is a registered
+trademark of Kern Sibbald.
+
+We have trademarked the Bacula name to ensure that any program using the
+name Bacula will be exactly compatible with the program that we have
+released. The use of the name Bacula is restricted to software systems
+that agree exactly with the program presented here. If you have made
+modifications to the Bacula source code that alter in any significant
+way the way the program functions, you may not distribute it using the
+Bacula name.
+
+\section{Fiduciary License Agreement}
+\index[general]{Fiduciary License Agreement }
+Developers who have contributed significant changes to the Bacula code
+should have signed a Fiduciary License Agreement (FLA), which
+guarantees them the right to use the code they have developed, and also
+ensures that the Free Software Foundation Europe (and thus the Bacula
+project) has the rights to the code. This Fiduciary License Agreement
+is found on the Bacula web site at:
+
+\elink{http://www.bacula.org/en/FLA-bacula.en.pdf}{\url{http://www.bacula.org/en/FLA-bacula.en.pdf}}
+
+and if you are submitting code, you should fill it out then sent to:
+
+\begin{quote}
+ Kern Sibbald \\
+ Cotes-de-Montmoiret 9 \\
+ 1012 Lausanne \\
+ Switzerland \\
+\end{quote}
+
+When you send in such a
+complete document, please notify me: kern at sibbald dot com.
+
+
+\section{Disclaimer}
+\index[general]{Disclaimer }
+
+NO WARRANTY
+
+BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE
+PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
+STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE
+PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
+PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE,
+YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY
+COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE
+PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE
+OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR
+DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR
+A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH
+HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
--- /dev/null
+[General]
+img_extIsRegExp=false
+img_extensions=.eps .jpg .jpeg .png .pdf .ps .fig .gif
+kileprversion=2
+kileversion=2.0
+lastDocument=stunnel.tex
+masterDocument=misc.tex
+name=Misc
+pkg_extIsRegExp=false
+pkg_extensions=.cls .sty
+src_extIsRegExp=false
+src_extensions=.tex .ltx .latex .dtx .ins
+
+[Tools]
+MakeIndex=
+QuickBuild=
+
+[item:coverpage.tex]
+archive=true
+column=33
+encoding=UTF-8
+highlight=LaTeX
+line=0
+open=false
+order=-1
+
+[item:dvd.tex]
+archive=true
+column=0
+encoding=UTF-8
+highlight=LaTeX
+line=56
+open=false
+order=-1
+
+[item:fdl.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:gpl.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:lesser.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:license.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:misc.tex]
+archive=true
+column=59
+encoding=UTF-8
+highlight=LaTeX
+line=45
+open=true
+order=0
+
+[item:projects.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:python.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:stunnel.tex]
+archive=true
+column=0
+encoding=UTF-8
+highlight=LaTeX
+line=0
+open=true
+order=1
+
+[item:vars.tex]
+archive=true
+column=0
+encoding=UTF-8
+highlight=LaTeX
+line=48
+open=false
+order=-1
+
+[item:version.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
--- /dev/null
+%%
+%%
+%% The following characters must be preceded by a backslash
+%% to be entered as printable characters:
+%%
+%% # $ % & ~ _ ^ \ { }
+%%
+
+\documentclass[10pt,a4paper]{book}
+
+\topmargin -0.5in
+\oddsidemargin 0.0in
+\evensidemargin 0.0in
+\textheight 10in
+\textwidth 6.5in
+
+
+\usepackage{html}
+\usepackage{float}
+\usepackage{graphicx}
+\usepackage{bacula}
+\usepackage{longtable}
+\usepackage{makeidx}
+\usepackage{index}
+\usepackage{setspace}
+\usepackage{hyperref}
+% \usepackage[linkcolor=black,colorlinks=true]{hyperref}
+\usepackage{url}
+
+\makeindex
+\newindex{general}{idx}{ind}{General Index}
+
+\sloppy
+
+\begin{document}
+\sloppy
+
+\include{coverpage}
+
+\clearpage
+\pagenumbering{roman}
+\tableofcontents
+\clearpage
+
+\pagestyle{myheadings}
+\markboth{Bacula Version \version}{Bacula Version \version}
+\pagenumbering{arabic}
+\include{python}
+\include{vars}
+\include{stunnel}
+\include{dvd}
+\include{projects}
+\include{license}
+\include{fdl}
+\include{gpl}
+\include{lesser}
+
+
+% pull in the index
+\clearpage
+\printindex[general]
+
+\end{document}
--- /dev/null
+%%
+%%
+
+\chapter{Bacula Projects}
+\label{ProjectsChapter}
+\index[general]{Projects!Bacula }
+\index[general]{Bacula Projects }
+
+Once a new major version of Bacula is released, the Bacula
+users will vote on a list of new features. This vote is used
+as the main element determining what new features will be
+implemented for the next version. Generally, the development time
+for a new release is between four to nine months. Sometimes it may be
+a bit longer, but in that case, there will be a number of bug fix
+updates to the currently released version.
+
+For the current list of project, please see the projects page in the CVS
+at: \elink{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/projects}
+{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/projects}
+see the {\bf projects} file in the main source directory. The projects
+file is updated approximately once every six months.
+
+Separately from the project list, Kern maintains a current list of
+tasks as well as ideas, feature requests, and occasionally design
+notes. This list is updated roughly weekly (sometimes more often).
+For a current list of tasks you can see {\bf kernstodo} in the Source Forge
+CVS at \elink{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/kernstodo}
+{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/kernstodo}.
--- /dev/null
+%%
+%%
+
+\chapter{Python Scripting}
+\label{PythonChapter}
+\index[general]{Python Scripting}
+\index[general]{Scripting!Python}
+
+You may be asking what Python is and why a scripting language is
+needed in Bacula. The answer to the first question is that Python
+is an Object Oriented scripting language with features similar
+to those found in Perl, but the syntax of the language is much
+cleaner and simpler. The answer to why have scripting in Bacula is to
+give the user more control over the whole backup process. Probably
+the simplest example is when Bacula needs a new Volume name, with
+a scripting language such as Python, you can generate any name
+you want, based on the current state of Bacula.
+
+\section{Python Configuration}
+\index[general]{Python Configuration}
+\index[general]{Configuration!Python}
+
+Python must be enabled during the configuration process by adding
+a \verb:--:with-python, and possibly specifying an alternate
+directory if your Python is not installed in a standard system
+location. If you are using RPMs you will need the python-devel package
+installed.
+
+When Python is configured, it becomes an integral part of Bacula and
+runs in Bacula's address space, so even though it is an interpreted
+language, it is very efficient.
+
+When the Director starts, it looks to see if you have a {\bf
+Scripts Directory} Directive defined (normal default {\bf
+/etc/bacula/scripts}, if so, it looks in that directory for a file named
+{\bf DirStartUp.py}. If it is found, Bacula will pass this file to Python
+for execution. The {\bf Scripts Directory} is a new directive that you add
+to the Director resource of your bacula-dir.conf file.
+
+Note: Bacula does not install Python scripts by default because these
+scripts are for you to program. This means that with a default
+installation with Python enabled, Bacula will print the following error
+message:
+
+\begin{verbatim}
+09-Jun 15:14 bacula-dir: ERROR in pythonlib.c:131 Could not import
+Python script /etc/bacula/scripts/DirStartUp. Python disabled.
+\end{verbatim}
+
+The source code directory {\bf examples/python} contains sample scripts
+for DirStartUp.py, SDStartUp.py, and FDStartUp.py that you might want
+to use as a starting point. Normally, your scripts directory (at least
+where you store the Python scripts) should be writable by Bacula, because
+Python will attempt to write a compiled version of the scripts (e.g.
+DirStartUp.pyc) back to that directory.
+
+When starting with the sample scripts, you can delete any part that
+you will not need, but you should keep all the Bacula Event and Job Event
+definitions. If you do not want a particular event, simply replace the
+existing code with a {\bf noop = 1}.
+
+\section{Bacula Events}
+\index[general]{Bacula Events}
+\index[general]{Events}
+A Bacula event is a point in the Bacula code where Bacula
+will call a subroutine (actually a method) that you have
+defined in the Python StartUp script. Events correspond
+to some significant event such as a Job Start, a Job End,
+Bacula needs a new Volume Name, ... When your script is
+called, it will have access to all the Bacula variables
+specific to the Job (attributes of the Job Object), and
+it can even call some of the Job methods (subroutines)
+or set new values in the Job attributes, such as the
+Priority. You will see below how the events are used.
+
+\section{Python Objects}
+\index[general]{Python Objects}
+\index[general]{Objects!Python}
+
+There are four Python objects that you will need to work with:
+\begin{description}
+\item [The Bacula Object]
+ The Bacula object is created by the Bacula daemon (the Director
+ in the present case) when the daemon starts. It is available to
+ the Python startup script, {\bf DirStartup.py}, by importing the
+ Bacula definitions with {\bf import bacula}. The methods
+ available with this object are described below.
+
+\item [The Bacula Events Class]
+ You create this class in the startup script, and you pass
+ it to the Bacula Object's {\bf set\_events} method. The
+ purpose of the Bacula Events Class is to define what global
+ or daemon events you want to monitor. When one of those events
+ occurs, your Bacula Events Class will be called at the method
+ corresponding to the event. There are currently three events,
+ JobStart, JobEnd, and Exit, which are described in detail below.
+
+\item [The Job Object]
+ When a Job starts, and assuming you have defined a JobStart method
+ in your Bacula Events Class, Bacula will create a Job Object. This
+ object will be passed to the JobStart event. The Job Object has a
+ has good number of read-only members or attributes providing many
+ details of the Job, and it also has a number of writable attributes
+ that allow you to pass information into the Job. These attributes
+ are described below.
+
+\item [The Job Events Class]
+ You create this class in the JobStart method of your Bacula Events
+ class, and it allows you to define which of the possible Job Object
+ events you want to see. You must pass an instance of your Job Events
+ class to the Job Object set\_events() method.
+ Normally, you will probably only have one
+ Job Events Class, which will be instantiated for each Job. However,
+ if you wish to see different events in different Jobs, you may have
+ as many Job Events classes as you wish.
+\end{description}
+
+
+The first thing the startup script must do is to define what global Bacula
+events (daemon events), it wants to see. This is done by creating a
+Bacula Events class, instantiating it, then passing it to the
+{\bf set\_events} method. There are three possible
+events.
+
+\begin{description}
+\item [JobStart]
+ \index[general]{JobStart}
+ This Python method, if defined, will be called each time a Job is started.
+ The method is passed the class instantiation object as the first argument,
+ and the Bacula Job object as the second argument. The Bacula Job object
+ has several built-in methods, and you can define which ones you
+ want called. If you do not define this method, you will not be able
+ to interact with Bacula jobs.
+
+\item [JobEnd]
+ This Python method, if defined, will be called each time a Job terminates.
+ The method is passed the class instantiation object as the first argument,
+ and the Bacula Job object as the second argument.
+
+\item [Exit]
+ This Python method, if defined, will be called when the Director terminates.
+ The method is passed the class instantiation object as the first argument.
+\end{description}
+
+Access to the Bacula variables and methods is done with:
+
+ import bacula
+
+The following are the read-only attributes provided by the bacula object.
+\begin{description}
+\item [Name]
+\item [ConfigFile]
+\item [WorkingDir]
+\item [Version] string consisting of "Version Build-date"
+\end{description}
+
+
+A simple definition of the Bacula Events Class might be the following:
+
+\footnotesize
+\begin{verbatim}
+import sys, bacula
+class BaculaEvents:
+ def JobStart(self, job):
+ ...
+\end{verbatim}
+\normalsize
+
+Then to instantiate the class and pass it to Bacula, you
+would do:
+
+\footnotesize
+\begin{verbatim}
+bacula.set_events(BaculaEvents()) # register Bacula Events wanted
+\end{verbatim}
+\normalsize
+
+And at that point, each time a Job is started, your BaculaEvents JobStart
+method will be called.
+
+Now to actually do anything with a Job, you must define which Job events
+you want to see, and this is done by defining a JobEvents class containing
+the methods you want called. Each method name corresponds to one of the
+Job Events that Bacula will generate.
+
+A simple Job Events class might look like the following:
+
+\footnotesize
+\begin{verbatim}
+class JobEvents:
+ def NewVolume(self, job):
+ ...
+\end{verbatim}
+\normalsize
+
+Here, your JobEvents class method NewVolume will be called each time
+the Job needs a new Volume name. To actually register the events defined
+in your class with the Job, you must instantiate the JobEvents class and
+set it in the Job {\bf set\_events} variable. Note, this is a bit different
+from how you registered the Bacula events. The registration process must
+be done in the Bacula JobStart event (your method). So, you would modify
+Bacula Events (not the Job events) as follows:
+
+\footnotesize
+\begin{verbatim}
+import sys, bacula
+class BaculaEvents:
+ def JobStart(self, job):
+ events = JobEvents() # create instance of Job class
+ job.set_events(events) # register Job events desired
+ ...
+\end{verbatim}
+\normalsize
+
+When a job event is triggered, the appropriate event definition is
+called in the JobEvents class. This is the means by which your Python
+script or code gets control. Once it has control, it may read job
+attributes, or set them. See below for a list of read-only attributes,
+and those that are writable.
+
+In addition, the Bacula {\bf job} object in the Director has
+a number of methods (subroutines) that can be called. They
+are:
+\begin{description}
+\item [set\_events] The set\_events method takes a single
+ argument, which is the instantiation of the Job Events class
+ that contains the methods that you want called. The method
+ names that will be called must correspond to the Bacula
+ defined events. You may define additional methods but Bacula
+ will not use them.
+\item [run] The run method takes a single string
+ argument, which is the run command (same as in the Console)
+ that you want to submit to start a new Job. The value
+ returned by the run method is the JobId of the job that
+ started, or -1 if there was an error.
+\item [write] The write method is used to be able to send
+ print output to the Job Report. This will be described later.
+\item[cancel] The cancel method takes a single integer argument,
+ which is a JobId. If JobId is found, it will be canceled.
+\item [DoesVolumeExist] The DoesVolumeExist method takes a single
+ string argument, which is the Volume name, and returns
+ 1 if the volume exists in the Catalog and 0 if the volume
+ does not exist.
+\end{description}
+
+The following attributes are read/write within the Director
+for the {\bf job} object.
+
+\begin{description}
+\item [Priority] Read or set the Job priority.
+ Note, that setting a Job Priority is effective only before
+ the Job actually starts.
+\item [Level] This attribute contains a string representing the Job
+ level, e.g. Full, Differential, Incremental, ... if read.
+ The level can also be set.
+\end{description}
+
+The following read-only attributes are available within the Director
+for the {\bf job} object.
+
+\begin{description}
+\item [Type] This attribute contains a string representing the Job
+ type, e.g. Backup, Restore, Verify, ...
+\item [JobId] This attribute contains an integer representing the
+ JobId.
+\item [Client] This attribute contains a string with the name of the
+ Client for this job.
+\item [NumVols] This attribute contains an integer with the number of
+ Volumes in the Pool being used by the Job.
+\item [Pool] This attribute contains a string with the name of the Pool
+ being used by the Job.
+\item [Storage] This attribute contains a string with the name of the
+ Storage resource being used by the Job.
+\item [Catalog] This attribute contains a string with the name of the
+ Catalog resource being used by the Job.
+\item [MediaType] This attribute contains a string with the name of the
+ Media Type associated with the Storage resource being used by the Job.
+\item [Job] This attribute contains a string containing the name of the
+ Job resource used by this job (not unique).
+\item [JobName] This attribute contains a string representing the full
+ unique Job name.
+\item [JobStatus] This attribute contains a single character string
+ representing the current Job status. The status may change
+ during execution of the job. It may take on the following
+ values:
+ \begin{description}
+ \item [C] Created, not yet running
+ \item [R] Running
+ \item [B] Blocked
+ \item [T] Completed successfully
+ \item [E] Terminated with errors
+ \item [e] Non-fatal error
+ \item [f] Fatal error
+ \item [D] Verify found differences
+ \item [A] Canceled by user
+ \item [F] Waiting for Client
+ \item [S] Waiting for Storage daemon
+ \item [m] Waiting for new media
+ \item [M] Waiting for media mount
+ \item [s] Waiting for storage resource
+ \item [j] Waiting for job resource
+ \item [c] Waiting for client resource
+ \item [d] Waiting on maximum jobs
+ \item [t] Waiting on start time
+ \item [p] Waiting on higher priority jobs
+ \end{description}
+
+\item [Priority] This attribute contains an integer with the priority
+ assigned to the job.
+\item [CatalogRes] tuple consisting of (DBName, Address, User,
+ Password, Socket, Port, Database Vendor) taken from the Catalog resource
+ for the Job with the exception of Database Vendor, which is
+ one of the following: MySQL, PostgreSQL, SQLite, Internal,
+ depending on what database you configured.
+\item [VolumeName]
+ After a Volume has been purged, this attribute will contain the
+ name of that Volume. At other times, this value may have no meaning.
+\end{description}
+
+The following write-only attributes are available within the
+Director:
+
+\begin{description}
+\item [JobReport] Send line to the Job Report.
+\item [VolumeName] Set a new Volume name. Valid only during the
+ NewVolume event.
+\end{description}
+
+\section{Python Console Command}
+\index[general]{Python Console Command}
+\index[general]{Console Command!Python}
+
+There is a new Console command named {\bf python}. It takes
+a single argument {\bf restart}. Example:
+\begin{verbatim}
+ python restart
+\end{verbatim}
+
+This command restarts the Python interpreter in the Director.
+This can be useful when you are modifying the DirStartUp script,
+because normally Python will cache it, and thus the
+script will be read one time.
+
+\section{Debugging Python Scripts}
+\index[general]{Debugging Python Scripts}
+In general, you debug your Python scripts by using print statements.
+You can also develop your script or important parts of it as a
+separate file using the Python interpreter to run it. Once you
+have it working correctly, you can then call the script from
+within the Bacula Python script (DirStartUp.py).
+
+If you are having problems loading DirStartUp.py, you will probably
+not get any error messages because Bacula can only print Python
+error messages after the Python interpreter is started. However, you
+may be able to see the error messages by starting Bacula in
+a shell window with the {\bf -d1} option on the command line. That
+should cause the Python error messages to be printed in the shell
+window.
+
+If you are getting error messages such as the following when
+loading DirStartUp.py:
+
+\begin{verbatim}
+ Traceback (most recent call last):
+ File "/etc/bacula/scripts/DirStartUp.py", line 6, in ?
+ import time, sys, bacula
+ ImportError: /usr/lib/python2.3/lib-dynload/timemodule.so: undefined
+ symbol: PyInt_FromLong
+ bacula-dir: pythonlib.c:134 Python Import error.
+\end{verbatim}
+
+It is because the DirStartUp script is calling a dynamically loaded
+module (timemodule.so in the above case) that then tries to use
+Python functions exported from the Python interpreter (in this case
+PyInt\_FromLong). The way Bacula is currently linked with Python does
+not permit this. The solution to the problem is to put such functions
+(in this case the import of time into a separate Python script, which
+will do your calculations and return the values you want. Then call
+(not import) this script from the Bacula DirStartUp.py script, and
+it all should work as you expect.
+
+
+
+
+
+\section{Python Example}
+\index[general]{Python Example}
+\index[general]{Example!Python}
+
+An example script for the Director startup file is provided in
+{\bf examples/python/DirStartup.py} as follows:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula Python interface script for the Director
+#
+
+# You must import both sys and bacula
+import sys, bacula
+
+# This is the list of Bacula daemon events that you
+# can receive.
+class BaculaEvents(object):
+ def __init__(self):
+ # Called here when a new Bacula Events class is
+ # is created. Normally not used
+ noop = 1
+
+ def JobStart(self, job):
+ """
+ Called here when a new job is started. If you want
+ to do anything with the Job, you must register
+ events you want to receive.
+ """
+ events = JobEvents() # create instance of Job class
+ events.job = job # save Bacula's job pointer
+ job.set_events(events) # register events desired
+ sys.stderr = events # send error output to Bacula
+ sys.stdout = events # send stdout to Bacula
+ jobid = job.JobId; client = job.Client
+ numvols = job.NumVols
+ job.JobReport="Python Dir JobStart: JobId=%d Client=%s NumVols=%d\n" % (jobid,client,numvols)
+
+ # Bacula Job is going to terminate
+ def JobEnd(self, job):
+ jobid = job.JobId
+ client = job.Client
+ job.JobReport="Python Dir JobEnd output: JobId=%d Client=%s.\n" % (jobid, client)
+
+ # Called here when the Bacula daemon is going to exit
+ def Exit(self, job):
+ print "Daemon exiting."
+
+bacula.set_events(BaculaEvents()) # register daemon events desired
+
+"""
+ These are the Job events that you can receive.
+"""
+class JobEvents(object):
+ def __init__(self):
+ # Called here when you instantiate the Job. Not
+ # normally used
+ noop = 1
+
+ def JobInit(self, job):
+ # Called when the job is first scheduled
+ noop = 1
+
+ def JobRun(self, job):
+ # Called just before running the job after initializing
+ # This is the point to change most Job parameters.
+ # It is equivalent to the JobRunBefore point.
+ noop = 1
+
+ def NewVolume(self, job):
+ # Called when Bacula wants a new Volume name. The Volume
+ # name returned, if any, must be stored in job.VolumeName
+ jobid = job.JobId
+ client = job.Client
+ numvol = job.NumVols;
+ print job.CatalogRes
+ job.JobReport = "JobId=%d Client=%s NumVols=%d" % (jobid, client, numvol)
+ job.JobReport="Python before New Volume set for Job.\n"
+ Vol = "TestA-%d" % numvol
+ job.JobReport = "Exists=%d TestA-%d" % (job.DoesVolumeExist(Vol), numvol)
+ job.VolumeName="TestA-%d" % numvol
+ job.JobReport="Python after New Volume set for Job.\n"
+ return 1
+
+ def VolumePurged(self, job):
+ # Called when a Volume is purged. The Volume name can be referenced
+ # with job.VolumeName
+ noop = 1
+
+
+
+\end{verbatim}
+\normalsize
--- /dev/null
+%%
+%%
+
+\chapter{Using Stunnel to Encrypt Communications}
+\label{StunnelChapter}
+\index[general]{Using Stunnel to Encrypt Communications to Clients }
+
+Prior to version 1.37, Bacula did not have built-in communications encryption.
+Please see the \ilink {TLS chapter}{CommEncryption} if you are using Bacula
+1.37 or greater.
+
+Without too much effort, it is possible to encrypt the communications
+between any of the daemons. This chapter will show you how to use {\bf
+stunnel} to encrypt communications to your client programs. We assume the
+Director and the Storage daemon are running on one machine that will be called
+{\bf server} and the Client or File daemon is running on a different machine
+called {\bf client}. Although the details may be slightly different, the same
+principles apply whether you are encrypting between Unix, Linux, or Win32
+machines. This example was developed between two Linux machines running
+stunnel version 4.04-4 on a Red Hat Enterprise 3.0 system.
+
+\section{Communications Ports Used}
+\index[general]{Used!Communications Ports }
+\index[general]{Communications Ports Used }
+
+First, you must know that with the standard Bacula configuration, the Director
+will contact the File daemon on port 9102. The File daemon then contacts the
+Storage daemon using the address and port parameters supplied by the Director.
+The standard port used will be 9103. This is the typical server/client view of
+the world, the File daemon is a server to the Director (i.e. listens for the
+Director to contact it), and the Storage daemon is a server to the File
+daemon.
+
+\section{Encryption}
+\index[general]{Encryption }
+
+The encryption is accomplished between the Director and the File daemon by
+using an stunnel on the Director's machine (server) to encrypt the data and to
+contact an stunnel on the File daemon's machine (client), which decrypts the
+data and passes it to the client.
+
+Between the File daemon and the Storage daemon, we use an stunnel on the File
+daemon's machine to encrypt the data and another stunnel on the Storage
+daemon's machine to decrypt the data.
+
+As a consequence, there are actually four copies of stunnel running, two on the
+server and two on the client. This may sound a bit complicated, but it really
+isn't. To accomplish this, we will need to construct four separate conf files
+for stunnel, and we will need to make some minor modifications to the
+Director's conf file. None of the other conf files need to be changed.
+
+\section{A Picture}
+\index[general]{Picture }
+
+Since pictures usually help a lot, here is an overview of what we will be
+doing. Don't worry about all the details of the port numbers and such for the
+moment.
+
+\footnotesize
+\begin{verbatim}
+ File daemon (client):
+ stunnel-fd1.conf
+ |===========|
+ Port 29102 >----| Stunnel 1 |-----> Port 9102
+ |===========|
+ stunnel-fd2.conf
+ |===========|
+ Port 9103 >----| Stunnel 2 |-----> server:29103
+ |===========|
+ Director (server):
+ stunnel-dir.conf
+ |===========|
+ Port 29102 >----| Stunnel 3 |-----> client:29102
+ |===========|
+ stunnel-sd.conf
+ |===========|
+ Port 29103 >----| Stunnel 4 |-----> 9103
+ |===========|
+\end{verbatim}
+\normalsize
+
+\section{Certificates}
+\index[general]{Certificates }
+
+In order for stunnel to function as a server, which it does in our diagram for
+Stunnel 1 and Stunnel 4, you must have a certificate and the key. It is
+possible to keep the two in separate files, but normally, you keep them in one
+single .pem file. You may create this certificate yourself in which case, it
+will be self-signed, or you may have it signed by a CA.
+
+If you want your clients to verify that the server is in fact valid (Stunnel 2
+and Stunnel 3), you will need to have the server certificates signed by a CA
+(Certificate Authority), and you will need to have the CA's public certificate
+(contains the CA's public key).
+
+Having a CA signed certificate is {\bf highly} recommended if you are using
+your client across the Internet, otherwise you are exposed to the man in the
+middle attack and hence loss of your data.
+
+See below for how to create a self-signed certificate.
+
+\section{Securing the Data Channel}
+\index[general]{Channel!Securing the Data }
+\index[general]{Securing the Data Channel }
+
+To simplify things a bit, let's for the moment consider only the data channel.
+That is the connection between the File daemon and the Storage daemon, which
+takes place on port 9103. In fact, in a minimalist solution, this is the only
+connection that needs to be encrypted, because it is the one that transports your
+data. The connection between the Director and the File daemon is simply a
+control channel used to start the job and get the job status.
+
+Normally the File daemon will contact the Storage daemon on port 9103
+(supplied by the Director), so we need an stunnel that listens on port 9103 on
+the File daemon's machine, encrypts the data and sends it to the Storage
+daemon. This is depicted by Stunnel 2 above. Note that this stunnel is
+listening on port 9103 and sending to server:29103. We use port 29103 on the
+server because if we would send the data to port 9103, it would go directly to the
+Storage daemon, which doesn't understand encrypted data. On the server
+machine, we run Stunnel 4, which listens on port 29103, decrypts the data and
+sends it to the Storage daemon, which is listening on port 9103.
+
+\section{Data Channel Configuration}
+\index[general]{Modification of bacula-dir.conf for the Data Channel }
+\index[general]{baculoa-dir.conf!Modification for the Data Channel }
+
+The Storage resource of the bacula-dir.conf normally looks something like the
+following:
+
+\footnotesize
+\begin{verbatim}
+Storage {
+ Name = File
+ Address = server
+ SDPort = 9103
+ Password = storage_password
+ Device = File
+ Media Type = File
+}
+\end{verbatim}
+\normalsize
+
+Notice that this is running on the server machine, and it points the File
+daemon back to server:9103, which is where our Storage daemon is listening. We
+modify this to be:
+
+\footnotesize
+\begin{verbatim}
+Storage {
+ Name = File
+ Address = localhost
+ SDPort = 9103
+ Password = storage_password
+ Device = File
+ Media Type = File
+}
+\end{verbatim}
+\normalsize
+
+This causes the File daemon to send the data to the stunnel running on
+localhost (the client machine). We could have used client as the address as
+well.
+
+\section{Stunnel Configuration for the Data Channel}
+\index[general]{Stunnel Configuration for the Data Channel }
+
+In the diagram above, we see above Stunnel 2 that we use stunnel-fd2.conf on the
+client. A pretty much minimal config file would look like the following:
+
+\footnotesize
+\begin{verbatim}
+client = yes
+[29103]
+accept = localhost:9103
+connect = server:29103
+\end{verbatim}
+\normalsize
+
+The above config file does encrypt the data but it does not require a
+certificate, so it is subject to the man in the middle attack. The file I
+actually used, stunnel-fd2.conf, looked like this:
+
+\footnotesize
+\begin{verbatim}
+#
+# Stunnel conf for Bacula client -> SD
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29103]
+accept = localhost:9103
+connect = server:29103
+\end{verbatim}
+\normalsize
+
+You will notice that I specified a pid file location because I ran stunnel
+under my own userid so I could not use the default, which requires root
+permission. I also specified a certificate that I have as well as verify level
+2 so that the certificate is required and verified, and I must supply the
+location of the CA (Certificate Authority) certificate so that the stunnel
+certificate can be verified. Finally, you will see that there are two lines
+commented out, which when enabled, produce a lot of nice debug info in the
+command window.
+
+If you do not have a signed certificate (stunnel.pem), you need to delete the
+cert, CAfile, and verify lines.
+
+Note that the stunnel.pem, is actually a private key and a certificate in a
+single file. These two can be kept and specified individually, but keeping
+them in one file is more convenient.
+
+The config file, stunnel-sd.conf, needed for Stunnel 4 on the server machine
+is:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for Storage daemon
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is mandatory here, it may be self signed
+# If it is self signed, the client may not use
+# verify
+#
+cert = /home/kern/stunnel/stunnel.pem
+client = no
+# debug = 7
+# foreground = yes
+[29103]
+accept = 29103
+connect = 9103
+\end{verbatim}
+\normalsize
+
+\section{Starting and Testing the Data Encryption}
+\index[general]{Starting and Testing the Data Encryption }
+\index[general]{Encryption!Starting and Testing the Data }
+
+It will most likely be the simplest to implement the Data Channel encryption
+in the following order:
+
+\begin{itemize}
+\item Setup and run Bacula backing up some data on your client machine
+ without encryption.
+\item Stop Bacula.
+\item Modify the Storage resource in the Director's conf file.
+\item Start Bacula
+\item Start stunnel on the server with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-sd.conf
+
+\end{verbatim}
+\normalsize
+
+\item Start stunnel on the client with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-fd2.conf
+
+\end{verbatim}
+\normalsize
+
+\item Run a job.
+\item If it doesn't work, turn debug on in both stunnel conf files, restart
+ the stunnels, rerun the job, repeat until it works.
+ \end{itemize}
+
+\section{Encrypting the Control Channel}
+\index[general]{Channel!Encrypting the Control }
+\index[general]{Encrypting the Control Channel }
+
+The Job control channel is between the Director and the File daemon, and as
+mentioned above, it is not really necessary to encrypt, but it is good
+practice to encrypt it as well. The two stunnels that are used in this case
+will be Stunnel 1 and Stunnel 3 in the diagram above. Stunnel 3 on the server
+might normally listen on port 9102, but if you have a local File daemon, this
+will not work, so we make it listen on port 29102. It then sends the data to
+client:29102. Again we use port 29102 so that the stunnel on the client
+machine can decrypt the data before passing it on to port 9102 where the File
+daemon is listening.
+
+\section{Control Channel Configuration}
+\index[general]{Control Channel Configuration }
+
+We need to modify the standard Client resource, which would normally look
+something like:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client-fd
+ Address = client
+ FDPort = 9102
+ Catalog = BackupDB
+ Password = "xxx"
+}
+\end{verbatim}
+\normalsize
+
+to be:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client-fd
+ Address = localhost
+ FDPort = 29102
+ Catalog = BackupDB
+ Password = "xxx"
+}
+\end{verbatim}
+\normalsize
+
+This will cause the Director to send the control information to
+localhost:29102 instead of directly to the client.
+
+\section{Stunnel Configuration for the Control Channel}
+\index[general]{Config Files for stunnel to Encrypt the Control Channel }
+
+The stunnel config file, stunnel-dir.conf, for the Director's machine would
+look like the following:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for the Directory to contact a client
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29102]
+accept = localhost:29102
+connect = client:29102
+\end{verbatim}
+\normalsize
+
+and the config file, stunnel-fd1.conf, needed to run stunnel on the Client
+would be:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for the Directory to contact a client
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29102]
+accept = localhost:29102
+connect = client:29102
+\end{verbatim}
+\normalsize
+
+\section{Starting and Testing the Control Channel}
+\index[general]{Starting and Testing the Control Channel }
+\index[general]{Channel!Starting and Testing the Control }
+
+It will most likely be the simplest to implement the Control Channel
+encryption in the following order:
+
+\begin{itemize}
+\item Stop Bacula.
+\item Modify the Client resource in the Director's conf file.
+\item Start Bacula
+\item Start stunnel on the server with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-dir.conf
+
+\end{verbatim}
+\normalsize
+
+\item Start stunnel on the client with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-fd1.conf
+
+\end{verbatim}
+\normalsize
+
+\item Run a job.
+\item If it doesn't work, turn debug on in both stunnel conf files, restart
+ the stunnels, rerun the job, repeat until it works.
+ \end{itemize}
+
+\section{Using stunnel to Encrypt to a Second Client}
+\index[general]{Using stunnel to Encrypt to a Second Client }
+\index[general]{Client!Using stunnel to Encrypt to a Second }
+
+On the client machine, you can just duplicate the setup that you have on the
+first client file for file and it should work fine.
+
+In the bacula-dir.conf file, you will want to create a second client pretty
+much identical to how you did for the first one, but the port number must be
+unique. We previously used:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client-fd
+ Address = localhost
+ FDPort = 29102
+ Catalog = BackupDB
+ Password = "xxx"
+}
+\end{verbatim}
+\normalsize
+
+so for the second client, we will, of course, have a different name, and we
+will also need a different port. Remember that we used port 29103 for the
+Storage daemon, so for the second client, we can use port 29104, and the
+Client resource would look like:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client2-fd
+ Address = localhost
+ FDPort = 29104
+ Catalog = BackupDB
+ Password = "yyy"
+}
+\end{verbatim}
+\normalsize
+
+Now, fortunately, we do not need a third stunnel to on the Director's machine,
+we can just add the new port to the config file, stunnel-dir.conf, to make:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for the Directory to contact a client
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29102]
+accept = localhost:29102
+connect = client:29102
+[29104]
+accept = localhost:29102
+connect = client2:29102
+\end{verbatim}
+\normalsize
+
+There are no changes necessary to the Storage daemon or the other stunnel so
+that this new client can talk to our Storage daemon.
+
+\section{Creating a Self-signed Certificate}
+\index[general]{Creating a Self-signed Certificate }
+\index[general]{Certificate!Creating a Self-signed }
+
+You may create a self-signed certificate for use with stunnel that will permit
+you to make it function, but will not allow certificate validation. The .pem
+file containing both the certificate and the key can be made with the
+following, which I put in a file named {\bf makepem}:
+
+\footnotesize
+\begin{verbatim}
+#!/bin/sh
+#
+# Simple shell script to make a .pem file that can be used
+# with stunnel and Bacula
+#
+OPENSSL=openssl
+ umask 77
+ PEM1="/bin/mktemp openssl.XXXXXX"
+ PEM2="/bin/mktemp openssl.XXXXXX"
+ ${OPENSSL} req -newkey rsa:1024 -keyout $PEM1 -nodes \
+ -x509 -days 365 -out $PEM2
+ cat $PEM1 > stunnel.pem
+ echo "" >>stunnel.pem
+ cat $PEM2 >>stunnel.pem
+ rm $PEM1 $PEM2
+\end{verbatim}
+\normalsize
+
+The above script will ask you a number of questions. You may simply answer
+each of them by entering a return, or if you wish you may enter your own data.
+
+
+\section{Getting a CA Signed Certificate}
+\index[general]{Certificate!Getting a CA Signed }
+\index[general]{Getting a CA Signed Certificate }
+
+The process of getting a certificate that is signed by a CA is quite a bit
+more complicated. You can purchase one from quite a number of PKI vendors, but
+that is not at all necessary for use with Bacula.
+
+To get a CA signed
+certificate, you will either need to find a friend that has setup his own CA
+or to become a CA yourself, and thus you can sign all your own certificates.
+The book OpenSSL by John Viega, Matt Mesier \& Pravir Chandra from O'Reilly
+explains how to do it, or you can read the documentation provided in the
+Open-source PKI Book project at Source Forge:
+\elink{
+http://ospkibook.sourceforge.net/docs/OSPKI-2.4.7/OSPKI-html/ospki-book.htm}
+{http://ospkibook.sourceforge.net/docs/OSPKI-2.4.7/OSPKI-html/ospki-book.htm}.
+Note, this link may change.
+
+\section{Using ssh to Secure the Communications}
+\index[general]{Communications!Using ssh to Secure the }
+\index[general]{Using ssh to Secure the Communications }
+
+Please see the script {\bf ssh-tunnel.sh} in the {\bf examples} directory. It
+was contributed by Stephan Holl.
--- /dev/null
+#!/usr/bin/perl -w
+#
+use strict;
+
+# Used to change the names of the image files generated by latex2html from imgxx.png
+# to meaningful names. Provision is made to go either from or to the meaningful names.
+# The meaningful names are obtained from a file called imagename_translations, which
+# is generated by extensions to latex2html in the make_image_file subroutine in
+# bacula.perl.
+
+# Opens the file imagename_translations and reads the contents into a hash.
+# The hash is creaed with the imgxx.png files as the key if processing TO
+# meaningful filenames, and with the meaningful filenames as the key if
+# processing FROM meaningful filenames.
+# Then opens the html file(s) indicated in the command-line arguments and
+# changes all image references according to the translations described in the
+# above file. Finally, it renames the image files.
+#
+# Original creation: 3-27-05 by Karl Cunningham.
+# Modified 5-21-05 to go FROM and TO meaningful filenames.
+#
+my $TRANSFILE = "imagename_translations";
+my $path;
+
+# Loads the contents of $TRANSFILE file into the hash referenced in the first
+# argument. The hash is loaded to translate old to new if $direction is 0,
+# otherwise it is loaded to translate new to old. In this context, the
+# 'old' filename is the meaningful name, and the 'new' filename is the
+# imgxx.png filename. It is assumed that the old image is the one that
+# latex2html has used as the source to create the imgxx.png filename.
+# The filename extension is taken from the file
+sub read_transfile {
+ my ($trans,$direction) = @_;
+
+ if (!open IN,"<$path$TRANSFILE") {
+ print "WARNING: Cannot open image translation file $path$TRANSFILE for reading\n";
+ print " Image filename translation aborted\n\n";
+ exit 0;
+ }
+
+ while (<IN>) {
+ chomp;
+ my ($new,$old) = split(/\001/);
+
+ # Old filenames will usually have a leading ./ which we don't need.
+ $old =~ s/^\.\///;
+
+ # The filename extension of the old filename must be made to match
+ # the new filename because it indicates the encoding format of the image.
+ my ($ext) = $new =~ /(\.[^\.]*)$/;
+ $old =~ s/\.[^\.]*$/$ext/;
+ if ($direction == 0) {
+ $trans->{$new} = $old;
+ } else {
+ $trans->{$old} = $new;
+ }
+ }
+ close IN;
+}
+
+# Translates the image names in the file given as the first argument, according to
+# the translations in the hash that is given as the second argument.
+# The file contents are read in entirely into a string, the string is processed, and
+# the file contents are then written. No particular care is taken to ensure that the
+# file is not lost if a system failure occurs at an inopportune time. It is assumed
+# that the html files being processed here can be recreated on demand.
+#
+# Links to other files are added to the %filelist for processing. That way,
+# all linked files will be processed (assuming they are local).
+sub translate_html {
+ my ($filename,$trans,$filelist) = @_;
+ my ($contents,$out,$this,$img,$dest);
+ my $cnt = 0;
+
+ # If the filename is an external link ignore it. And drop any file:// from
+ # the filename.
+ $filename =~ /^(http|ftp|mailto)\:/ and return 0;
+ $filename =~ s/^file\:\/\///;
+ # Load the contents of the html file.
+ if (!open IF,"<$path$filename") {
+ print "WARNING: Cannot open $path$filename for reading\n";
+ print " Image Filename Translation aborted\n\n";
+ exit 0;
+ }
+
+ while (<IF>) {
+ $contents .= $_;
+ }
+ close IF;
+
+ # Now do the translation...
+ # First, search for an image filename.
+ while ($contents =~ /\<\s*IMG[^\>]*SRC=\"/si) {
+ $contents = $';
+ $out .= $` . $&;
+
+ # The next thing is an image name. Get it and translate it.
+ $contents =~ /^(.*?)\"/s;
+ $contents = $';
+ $this = $&;
+ $img = $1;
+ # If the image is in our list of ones to be translated, do it
+ # and feed the result to the output.
+ $cnt += $this =~ s/$img/$trans->{$img}/ if (defined($trans->{$img}));
+ $out .= $this;
+ }
+ $out .= $contents;
+
+ # Now send the translated text to the html file, overwriting what's there.
+ open OF,">$path$filename" or die "Cannot open $path$filename for writing\n";
+ print OF $out;
+ close OF;
+
+ # Now look for any links to other files and add them to the list of files to do.
+ while ($out =~ /\<\s*A[^\>]*HREF=\"(.*?)\"/si) {
+ $out = $';
+ $dest = $1;
+ # Drop an # and anything after it.
+ $dest =~ s/\#.*//;
+ $filelist->{$dest} = '' if $dest;
+ }
+ return $cnt;
+}
+
+# REnames the image files spefified in the %translate hash.
+sub rename_images {
+ my $translate = shift;
+ my ($response);
+
+ foreach (keys(%$translate)) {
+ if (! $translate->{$_}) {
+ print " WARNING: No destination Filename for $_\n";
+ } else {
+ $response = `mv -f $path$_ $path$translate->{$_} 2>&1`;
+ $response and print "ERROR from system $response\n";
+ }
+ }
+}
+
+#################################################
+############# MAIN #############################
+################################################
+
+# %filelist starts out with keys from the @ARGV list. As files are processed,
+# any links to other files are added to the %filelist. A hash of processed
+# files is kept so we don't do any twice.
+
+# The first argument must be either --to_meaningful_names or --from_meaningful_names
+
+my (%translate,$search_regex,%filelist,%completed,$thisfile);
+my ($cnt,$direction);
+
+my $arg0 = shift(@ARGV);
+$arg0 =~ /^(--to_meaningful_names|--from_meaningful_names)$/ or
+ die "ERROR: First argument must be either \'--to_meaningful_names\' or \'--from_meaningful_names\'\n";
+
+$direction = ($arg0 eq '--to_meaningful_names') ? 0 : 1;
+
+(@ARGV) or die "ERROR: Filename(s) to process must be given as arguments\n";
+
+# Use the first argument to get the path to the file of translations.
+my $tmp = $ARGV[0];
+($path) = $tmp =~ /(.*\/)/;
+$path = '' unless $path;
+
+read_transfile(\%translate,$direction);
+
+foreach (@ARGV) {
+ # Strip the path from the filename, and use it later on.
+ if (s/(.*\/)//) {
+ $path = $1;
+ } else {
+ $path = '';
+ }
+ $filelist{$_} = '';
+
+ while ($thisfile = (keys(%filelist))[0]) {
+ $cnt += translate_html($thisfile,\%translate,\%filelist) if (!exists($completed{$thisfile}));
+ delete($filelist{$thisfile});
+ $completed{$thisfile} = '';
+ }
+ print "translate_images.pl: $cnt image filenames translated ",($direction)?"from":"to"," meaningful names\n";
+}
+
+rename_images(\%translate);
--- /dev/null
+%%
+%%
+
+\chapter{Variable Expansion}
+\label{VarsChapter}
+\index[general]{Variable Expansion }
+\index[general]{Expansion!Variable }
+
+% TODO: does the following mean that this should not be in book?
+
+Please note that as of version 1.37, the Variable Expansion
+is deprecated and replaced by Python scripting (not yet
+documented).
+
+Variable expansion is somewhat similar to Unix shell variable expansion.
+Currently (version 1.31), it is used only in format labels, but in the future,
+it will most likely be used in more places.
+
+\section{General Functionality}
+\index[general]{Functionality!General }
+\index[general]{General Functionality }
+
+This is basically a string expansion capability that permits referencing
+variables, indexing arrays, conditional replacement of variables, case
+conversion, substring selection, regular expression matching and replacement,
+character class replacement, padding strings, repeated expansion in a user
+controlled loop, support of arithmetic expressions in the loop start, step and
+end conditions, and recursive expansion.
+
+When using variable expansion characters in a Volume Label Format record, the
+format should always be enclosed in double quotes ({\bf "}).
+
+For example, {\bf \$\{HOME\}} will be replaced by your home directory as
+defined in the environment. If you have defined the variable {\bf xxx} to be
+{\bf Test}, then the reference {\bf \$\{xxx:p/7/Y/r\}} will right pad the
+contents of {\bf xxx} to a length of seven characters filling with the
+character {\bf Y} giving {\bf YYYTest}.
+
+\section{Bacula Variables}
+\index[general]{Bacula Variables }
+\index[general]{Variables!Bacula }
+
+Within Bacula, there are three main classes of variables with some minor
+variations within the classes. The classes are:
+
+\begin{description}
+
+\item [Counters]
+ \index[general]{Counters }
+ Counters are defined by the {\bf Counter} resources in the Director's conf
+file. The counter can either be a temporary counter that lasts for the
+duration of Bacula's execution, or it can be a variable that is stored in
+the catalog, and thus retains its value from one Bacula execution to another.
+Counter variables may be incremented by postfixing a plus sign ({\bf +} after
+the variable name).
+
+\item [Internal Variables]
+ \index[general]{Internal Variables }
+ Internal variables are read-only, and may be related to the current job (i.e.
+Job name), or maybe special variables such as the date and time. The
+following variables are available:
+
+\begin{itemize}
+\item [Year] -- the full year
+\item [Month] -- the current month 1-12
+\item [Day] -- the day of the month 1-31
+\item [Hour] -- the hour 0-24
+\item [Minute] -- the current minute 0-59
+\item [Second] -- the current second 0-59
+\item [WeekDay] -- the current day of the week 0-6 with 0 being Sunday
+\item [Job] -- the job name
+\item [general] -- the Director's name
+\item [Level] -- the Job Level
+\item [Type] -- the Job type
+\item [JobId] -- the JobId
+\item [JobName] -- the unique job name composed of Job and date
+\item [Storage] -- the Storage daemon's name
+\item [Client] -- the Client's name
+\item [NumVols] -- the current number of Volumes in the Pool
+\item [Pool] -- the Pool name
+\item [Catalog] -- the Catalog name
+\item [MediaType] -- the Media Type
+ \end{itemize}
+
+\item [Environment Variables]
+ \index[general]{Environment Variables }
+ Environment variables are read-only, and must be defined in the environment
+prior to executing Bacula. Environment variables may be either scalar or an
+array, where the elements of the array are referenced by subscripting the
+variable name (e.g. {\bf \$\{Months[3]\}}). Environment variable arrays are
+defined by separating the elements with a vertical bar ({\bf |}), thus {\bf
+set Months="Jan|Feb|Mar|Apr|..."} defines an environment variable named
+{\bf Month} that will be treated as an array, and the reference {\bf
+\$\{Months[3]\}} will yield {\bf Mar}. The elements of the array can have
+differing lengths.
+\end{description}
+
+\section{Full Syntax}
+\index[general]{Syntax!Full }
+\index[general]{Full Syntax }
+
+Since the syntax is quite extensive, below, you will find the pseudo BNF. The
+special characters have the following meaning:
+
+\footnotesize
+\begin{verbatim}
+ ::= definition
+ ( ) grouping if the parens are not quoted
+ | separates alternatives
+ '/' literal / (or any other character)
+ CAPS a character or character sequence
+ * preceding item can be repeated zero or more times
+ ? preceding item can appear zero or one time
+ + preceding item must appear one or more times
+\end{verbatim}
+\normalsize
+
+And the pseudo BNF describing the syntax is:
+
+\footnotesize
+\begin{verbatim}
+ input ::= ( TEXT
+ | variable
+ | INDEX_OPEN input INDEX_CLOSE (loop_limits)?
+ )*
+ variable ::= DELIM_INIT (name|expression)
+ name ::= (NAME_CHARS)+
+ expression ::= DELIM_OPEN
+ (name|variable)+
+ (INDEX_OPEN num_exp INDEX_CLOSE)?
+ (':' command)*
+ DELIM_CLOSE
+ command ::= '-' (TEXT_EXP|variable)+
+ | '+' (TEXT_EXP|variable)+
+ | 'o' NUMBER ('-'|',') (NUMBER)?
+ | '#'
+ | '*' (TEXT_EXP|variable)+
+ | 's' '/' (TEXT_PATTERN)+
+ '/' (variable|TEXT_SUBST)*
+ '/' ('m'|'g'|'i'|'t')*
+ | 'y' '/' (variable|TEXT_SUBST)+
+ '/' (variable|TEXT_SUBST)*
+ '/'
+ | 'p' '/' NUMBER
+ '/' (variable|TEXT_SUBST)*
+ '/' ('r'|'l'|'c')
+ | '%' (name|variable)+
+ ('(' (TEXT_ARGS)? ')')?
+ | 'l'
+ | 'u'
+ num_exp ::= operand
+ | operand ('+'|'-'|'*'|'/'|'%') num_exp
+ operand ::= ('+'|'-')? NUMBER
+ | INDEX_MARK
+ | '(' num_exp ')'
+ | variable
+ loop_limits ::= DELIM_OPEN
+ (num_exp)? ',' (num_exp)? (',' (num_exp)?)?
+ DELIM_CLOSE
+ NUMBER ::= ('0'|...|'9')+
+ TEXT_PATTERN::= (^('/'))+
+ TEXT_SUBST ::= (^(DELIM_INIT|'/'))+
+ TEXT_ARGS ::= (^(DELIM_INIT|')'))+
+ TEXT_EXP ::= (^(DELIM_INIT|DELIM_CLOSE|':'|'+'))+
+ TEXT ::= (^(DELIM_INIT|INDEX_OPEN|INDEX_CLOSE))+
+ DELIM_INIT ::= '$'
+ DELIM_OPEN ::= '{'
+ DELIM_CLOSE ::= '}'
+ INDEX_OPEN ::= '['
+ INDEX_CLOSE ::= ']'
+ INDEX_MARK ::= '#'
+ NAME_CHARS ::= 'a'|...|'z'|'A'|...|'Z'|'0'|...|'9'
+\end{verbatim}
+\normalsize
+
+\section{Semantics}
+\index[general]{Semantics }
+
+The items listed in {\bf command} above, which always follow a colon ({\bf :})
+have the following meanings:
+
+\footnotesize
+\begin{verbatim}
+ - perform substitution if variable is empty
+ + perform substitution if variable is not empty
+ o cut out substring of the variable value
+ # length of the variable value
+ * substitute empty string if the variable value is not empty,
+ otherwise substitute the trailing parameter
+ s regular expression search and replace. The trailing
+ options are: m = multiline, i = case insensitive,
+ g = global, t = plain text (no regexp)
+ y transpose characters from class A to class B
+ p pad variable to l = left, r = right or c = center,
+ with second value.
+ % special function call (none implemented)
+ l lower case the variable value
+ u upper case the variable value
+\end{verbatim}
+\normalsize
+
+The {\bf loop\_limits} are start, step, and end values.
+
+A counter variable name followed immediately by a plus ({\bf +}) will cause
+the counter to be incremented by one.
+
+\section{Examples}
+\index[general]{Examples }
+
+To create an ISO date:
+
+\footnotesize
+\begin{verbatim}
+ DLT-${Year}-${Month:p/2/0/r}-${Day:p/2/0/r}
+\end{verbatim}
+\normalsize
+
+on 20 June 2003 would give {\bf DLT-2003-06-20}
+
+If you set the environment variable {\bf mon} to
+
+\footnotesize
+\begin{verbatim}
+ January|February|March|April|May|...
+ File-${mon[${Month}]}/${Day}/${Year}
+\end{verbatim}
+\normalsize
+
+on the first of March would give {\bf File-March/1/2003 }
\include{supportedchangers}
\include{spooling}
\include{statistics}
-\include{python}
\include{ansi-labels}
\include{win32}
\include{rescue}
\include{projects}
\include{thanks}
\include{bugs}
-\include{vars}
-\include{stunnel}
-\include{dvd}
% pull in the index
\clearpage
+++ /dev/null
-%%
-%%
-
-\chapter{DVD Volumes}
-\label{_DVDChapterStart}
-\index[general]{DVD Volumes}
-\index[general]{Writing DVDs}
-\index[general]{DVD Writing}
-\index[general]{Volumes!DVD}
-
-Bacula allows you to specify that you want to write to DVD. However,
-this feature is implemented only in version 1.37 or later.
-You may in fact write to DVD+RW, DVD+R, DVD-R, or DVD-RW
-media. The actual process used by Bacula is to first write
-the image to a spool directory, then when the Volume reaches
-a certain size or, at your option, at the end of a Job, Bacula
-will transfer the image from the spool directory to the
-DVD. The actual work of transferring the image is done
-by a script {\bf dvd-handler}, and the heart of that
-script is a program called {\bf growisofs} which allows
-creating or adding to a DVD ISO filesystem.
-
-You must have {\bf dvd+rw-tools} loaded on your system for DVD writing to
-work. Please note that the original {\bf dvd+rw-tools} package does {\bf
-NOT} work with Bacula. You must apply a patch which can be found in the
-{\bf patches} directory of Bacula sources with the name
-{\bf dvd+rw-tools-5.21.4.10.8.bacula.patch} for version 5.21 of the tools,
-or patch {bf dvd+rw-tools-6.1.bacula.patch} if you have version 6.1
-on your system. Unfortunately, this requires you to build the dvd\_rw-tools
-from source.
-
-Note, some Linux distros such as Debian dvd+rw-tools-7.0-4 package already
-have the patch applied, so please check.
-
-The fact that Bacula cannot use the OS to write directly
-to the DVD makes the whole process a bit more error prone than
-writing to a disk or a tape, but nevertheless, it does work if you
-use some care to set it up properly. However, at the current time
-(version 1.39.30 -- 12 December 2006) we still consider this code to be
-BETA quality. As a consequence, please do careful testing before relying
-on DVD backups in production.
-
-The remainder of this chapter explains the various directives that you can
-use to control the DVD writing.
-
-\label{DVDdirectives}
-\section{DVD Specific SD Directives}
-\index[general]{Directives!DVD}
-\index[general]{DVD Specific SD Directives }
-
-The following directives are added to the Storage daemon's
-Device resource.
-
-\begin{description}
-
-\item [Requires Mount = {\it Yes|No}]
- \index[sd]{Requires Mount }
- You must set this directive to {\bf yes} for DVD-writers, and to {\bf no} for
- all other devices (tapes/files). This directive indicates if the device
- requires to be mounted using the {\bf Mount Command}.
- To be able to write a DVD, the following directives must also be
- defined: {\bf Mount Point}, {\bf Mount Command}, {\bf Unmount Command} and
- {\bf Write Part Command}.
-
-\item [Mount Point = {\it directory}]
- \index[sd]{Mount Point}
- Directory where the device can be mounted.
-
-\item [Mount Command = {\it name-string}]
- \index[sd]{Mount Command}
- Command that must be executed to mount the device. Although the
- device is written directly, the mount command is necessary in
- order to determine the free space left on the DVD. Before the command is
- executed, \%a is replaced with the Archive Device, and \%m with the Mount
- Point.
-
- Most frequently, you will define it as follows:
-
-\footnotesize
-\begin{verbatim}
- Mount Command = "/bin/mount -t iso9660 -o ro %a %m"
-\end{verbatim}
-\normalsize
-
-However, if you have defined a mount point in /etc/fstab, you might be
-able to use a mount command such as:
-
-\footnotesize
-\begin{verbatim}
- Mount Command = "/bin/mount /media/dvd"
-\end{verbatim}
-\normalsize
-
-
-\item [Unmount Command = {\it name-string}]
- \index[sd]{Unmount Command}
- Command that must be executed to unmount the device. Before the command is
- executed, \%a is replaced with the Archive Device, and \%m with the Mount
- Point.
-
- Most frequently, you will define it as follows:
-
-\footnotesize
-\begin{verbatim}
- Unmount Command = "/bin/umount %m"
-\end{verbatim}
-\normalsize
-
-\item [Write Part Command = {\it name-string}]
- \index[sd]{Write Part Command }
- Command that must be executed to write a part to the device. Before the
- command is executed, \%a is replaced with the Archive Device, \%m with the
- Mount Point, \%e is replaced with 1 if we are writing the first part,
- and with 0 otherwise, and \%v with the current part filename.
-
- For a DVD, you will most frequently specify the Bacula supplied {\bf
- dvd-handler} script as follows:
-
-\footnotesize
-\begin{verbatim}
- Write Part Command = "/path/dvd-handler %a write %e %v"
-\end{verbatim}
-\normalsize
-
- Where {\bf /path} is the path to your scripts install directory, and
- dvd-handler is the Bacula supplied script file.
- This command will already be present, but commented out,
- in the default bacula-sd.conf file. To use it, simply remove
- the comment (\#) symbol.
-
-
-\item [Free Space Command = {\it name-string}]
- \index[sd]{Free Space Command }
- Command that must be executed to check how much free space is left on the
- device. Before the command is executed,\%a is replaced with the Archive
- Device.
-
- For a DVD, you will most frequently specify the Bacula supplied {\bf
- dvd-handler} script as follows:
-
-\footnotesize
-\begin{verbatim}
- Free Space Command = "/path/dvd-handler %a free"
-\end{verbatim}
-\normalsize
-
- Where {\bf /path} is the path to your scripts install directory, and
- dvd-handler is the Bacula supplied script file.
- If you want to specify your own command, please look at the code in
- dvd-handler to see what output Bacula expects from this command.
- This command will already be present, but commented out,
- in the default bacula-sd.conf file. To use it, simply remove
- the comment (\#) symbol.
-
- If you do not set it, Bacula will expect there is always free space on the
- device.
-
-\end{description}
-
-In addition to the directives specified above, you must also
-specify the other standard Device resource directives. Please see the
-sample DVD Device resource in the default bacula-sd.conf file. Be sure
-to specify the raw device name for {\bf Archive Device}. It should
-be a name such as {\bf /dev/cdrom} or {\bf /media/cdrecorder} or
-{\bf /dev/dvd} depending on your system. It will not be a name such
-as {\bf /mnt/cdrom}.
-
-Finally, for {\bf growisofs} to work, it must be able to lock
-a certain amount of memory in RAM. If you have restrictions on
-this function, you may have failures. Under {\bf bash}, you can
-set this with the following command:
-
-\footnotesize
-\begin{verbatim}
-ulimit -l unlimited
-\end{verbatim}
-\normalsize
-
-\section{Edit Codes for DVD Directives}
-\index[general]{Directives!DVD Edit Codes}
-\index[general]{Edit Codes for DVD Directives }
-
-Before submitting the {\bf Mount Command}, {\bf Unmount Command},
-{\bf Write Part Command}, or {\bf Free Space Command} directives
-to the operating system, Bacula performs character substitution of the
-following characters:
-
-\footnotesize
-\begin{verbatim}
- %% = %
- %a = Archive device name
- %e = erase (set if cannot mount and first part)
- %n = part number
- %m = mount point
- %v = last part name (i.e. filename)
-\end{verbatim}
-\normalsize
-
-
-
-\section{DVD Specific Director Directives}
-\index[general]{Directives!DVD}
-\index[general]{DVD Specific Director Directives }
-
-The following directives are added to the Director's Job resource.
-
-\label{WritePartAfterJob}
-\begin{description}
-\item [Write Part After Job = \lt{}yes|no\gt{}]
- \index[dir]{Write Part After Job }
- If this directive is set to {\bf yes} (default {\bf no}), the
- Volume written to a temporary spool file for the current Job will
- be written to the DVD as a new part file
- will be created after the job is finished.
-
- It should be set to {\bf yes} when writing to devices that require a mount
- (for example DVD), so you are sure that the current part, containing
- this job's data, is written to the device, and that no data is left in
- the temporary file on the hard disk. However, on some media, like DVD+R
- and DVD-R, a lot of space (about 10Mb) is lost everytime a part is
- written. So, if you run several jobs each after another, you could set
- this directive to {\bf no} for all jobs, except the last one, to avoid
- wasting too much space, but to ensure that the data is written to the
- medium when all jobs are finished.
-
- This directive is ignored for devices other than DVDs.
-\end{description}
-
-
-
-\label{DVDpoints}
-\section{Other Points}
-\index[general]{Points!Other }
-\index[general]{Other Points }
-
-\begin{itemize}
-\item Please be sure that you have any automatic DVD mounting
- disabled before running Bacula -- this includes auto mounting
- in /etc/fstab, hotplug, ... If the DVD is automatically
- mounted by the OS, it will cause problems when Bacula tries
- to mount/unmount the DVD.
-\item Please be sure that you the directive {\bf Write Part After Job}
- set to {\bf yes}, otherwise the last part of the data to be
- written will be left in the DVD spool file and not written to
- the DVD. The DVD will then be unreadable until this last part
- is written. If you have a series of jobs that are run one at
- a time, you can turn this off until the last job is run.
-\item The current code is not designed to have multiple simultaneous
- jobs writing to the DVD. As a consequence, please ensure that
- only one DVD backup job runs at any time.
-\item Writing and reading of DVD+RW seems to work quite reliably
- provided you are using the patched dvd+rw-mediainfo programs.
- On the other hand, we do not have enough information to ensure
- that DVD-RW or other forms of DVDs work correctly.
-\item DVD+RW supports only about 1000 overwrites. Every time you
- mount the filesystem read/write will count as one write. This can
- add up quickly, so it is best to mount your DVD+RW filesystem read-only.
- Bacula does not need the DVD to be mounted read-write, since it uses
- the raw device for writing.
-\item Reformatting DVD+RW 10-20 times can apparently make the medium
- unusable. Normally you should not have to format or reformat
- DVD+RW media. If it is necessary, current versions of growisofs will
- do so automatically.
-\item We have had several problems writing to DVD-RWs (this does NOT
- concern DVD+RW), because these media have two writing-modes: {\bf
- Incremental Sequential} and {\bf Restricted Overwrite}. Depending on
- your device and the media you use, one of these modes may not work
- correctly (e.g. {\bf Incremental Sequential} does not work with my NEC
- DVD-writer and Verbatim DVD-RW).
-
- To retrieve the current mode of a DVD-RW, run:
-\begin{verbatim}
- dvd+rw-mediainfo /dev/xxx
-\end{verbatim}
- where you replace xxx with your DVD device name.
-
- {\bf Mounted Media} line should give you the information.
-
- To set the device to {\bf Restricted Overwrite} mode, run:
-\begin{verbatim}
- dvd+rw-format /dev/xxx
-\end{verbatim}
- If you want to set it back to the default {\bf Incremental Sequential} mode, run:
-\begin{verbatim}
- dvd+rw-format -blank /dev/xxx
-\end{verbatim}
-
-\item Bacula only accepts to write to blank DVDs. To quickly blank a DVD+/-RW, run
- this command:
-\begin{verbatim}
- dd if=/dev/zero bs=1024 count=512 | growisofs -Z /dev/xxx=/dev/fd/0
-\end{verbatim}
- Then, try to mount the device, if it cannot be mounted, it will be considered
- as blank by Bacula, if it can be mounted, try a full blank (see below).
-
-\item If you wish to blank completely a DVD+/-RW, use the following:
-\begin{verbatim}
- growisofs -Z /dev/xxx=/dev/zero
-\end{verbatim}
- where you replace xxx with your DVD device name. However, note that this
- blanks the whole DVD, which takes quite a long time (16 minutes on mine).
-\item DVD+RW and DVD-RW support only about 1000 overwrites (i.e. don't use the
-same medium for years if you don't want to have problems...).
-
-To write to the DVD the first time use:
-\begin{verbatim}
- growisofs -Z /dev/xxx filename
-\end{verbatim}
-
-To add additional files (more parts use):
-
-\begin{verbatim}
- growisofs -M /dev/xxx filename
-\end{verbatim}
-
-The option {\bf -use-the-force-luke=4gms} was added in growisofs 5.20 to
-override growisofs' behavior of always checking for the 4GB limit.
-Normally, this option is recommended for all Linux 2.6.8 kernels or
-greater, since these newer kernels can handle writing more than 4GB.
-See below for more details on this subject.
-
-\item For more information about DVD writing, please look at the
-\elink{dvd+rw-tools homepage}{http://fy.chalmers.se/~appro/linux/DVD+RW/}.
-
-\item According to bug \#912, bscan cannot read multi-volume DVDs. This is
-on our TODO list, but unless someone submits a patch it is not likely to be
-done any time in the near future. (9 Sept 2007).
-
-\end{itemize}
+++ /dev/null
-%%
-%%
-
-\chapter{Bacula Projects}
-\label{ProjectsChapter}
-\index[general]{Projects!Bacula }
-\index[general]{Bacula Projects }
-
-Once a new major version of Bacula is released, the Bacula
-users will vote on a list of new features. This vote is used
-as the main element determining what new features will be
-implemented for the next version. Generally, the development time
-for a new release is between four to nine months. Sometimes it may be
-a bit longer, but in that case, there will be a number of bug fix
-updates to the currently released version.
-
-For the current list of project, please see the projects page in the CVS
-at: \elink{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/projects}
-{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/projects}
-see the {\bf projects} file in the main source directory. The projects
-file is updated approximately once every six months.
-
-Separately from the project list, Kern maintains a current list of
-tasks as well as ideas, feature requests, and occasionally design
-notes. This list is updated roughly weekly (sometimes more often).
-For a current list of tasks you can see {\bf kernstodo} in the Source Forge
-CVS at \elink{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/kernstodo}
-{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/kernstodo}.
+++ /dev/null
-%%
-%%
-
-\chapter{Python Scripting}
-\label{PythonChapter}
-\index[general]{Python Scripting}
-\index[general]{Scripting!Python}
-
-You may be asking what Python is and why a scripting language is
-needed in Bacula. The answer to the first question is that Python
-is an Object Oriented scripting language with features similar
-to those found in Perl, but the syntax of the language is much
-cleaner and simpler. The answer to why have scripting in Bacula is to
-give the user more control over the whole backup process. Probably
-the simplest example is when Bacula needs a new Volume name, with
-a scripting language such as Python, you can generate any name
-you want, based on the current state of Bacula.
-
-\section{Python Configuration}
-\index[general]{Python Configuration}
-\index[general]{Configuration!Python}
-
-Python must be enabled during the configuration process by adding
-a \verb:--:with-python, and possibly specifying an alternate
-directory if your Python is not installed in a standard system
-location. If you are using RPMs you will need the python-devel package
-installed.
-
-When Python is configured, it becomes an integral part of Bacula and
-runs in Bacula's address space, so even though it is an interpreted
-language, it is very efficient.
-
-When the Director starts, it looks to see if you have a {\bf
-Scripts Directory} Directive defined (normal default {\bf
-/etc/bacula/scripts}, if so, it looks in that directory for a file named
-{\bf DirStartUp.py}. If it is found, Bacula will pass this file to Python
-for execution. The {\bf Scripts Directory} is a new directive that you add
-to the Director resource of your bacula-dir.conf file.
-
-Note: Bacula does not install Python scripts by default because these
-scripts are for you to program. This means that with a default
-installation with Python enabled, Bacula will print the following error
-message:
-
-\begin{verbatim}
-09-Jun 15:14 bacula-dir: ERROR in pythonlib.c:131 Could not import
-Python script /etc/bacula/scripts/DirStartUp. Python disabled.
-\end{verbatim}
-
-The source code directory {\bf examples/python} contains sample scripts
-for DirStartUp.py, SDStartUp.py, and FDStartUp.py that you might want
-to use as a starting point. Normally, your scripts directory (at least
-where you store the Python scripts) should be writable by Bacula, because
-Python will attempt to write a compiled version of the scripts (e.g.
-DirStartUp.pyc) back to that directory.
-
-When starting with the sample scripts, you can delete any part that
-you will not need, but you should keep all the Bacula Event and Job Event
-definitions. If you do not want a particular event, simply replace the
-existing code with a {\bf noop = 1}.
-
-\section{Bacula Events}
-\index[general]{Bacula Events}
-\index[general]{Events}
-A Bacula event is a point in the Bacula code where Bacula
-will call a subroutine (actually a method) that you have
-defined in the Python StartUp script. Events correspond
-to some significant event such as a Job Start, a Job End,
-Bacula needs a new Volume Name, ... When your script is
-called, it will have access to all the Bacula variables
-specific to the Job (attributes of the Job Object), and
-it can even call some of the Job methods (subroutines)
-or set new values in the Job attributes, such as the
-Priority. You will see below how the events are used.
-
-\section{Python Objects}
-\index[general]{Python Objects}
-\index[general]{Objects!Python}
-
-There are four Python objects that you will need to work with:
-\begin{description}
-\item [The Bacula Object]
- The Bacula object is created by the Bacula daemon (the Director
- in the present case) when the daemon starts. It is available to
- the Python startup script, {\bf DirStartup.py}, by importing the
- Bacula definitions with {\bf import bacula}. The methods
- available with this object are described below.
-
-\item [The Bacula Events Class]
- You create this class in the startup script, and you pass
- it to the Bacula Object's {\bf set\_events} method. The
- purpose of the Bacula Events Class is to define what global
- or daemon events you want to monitor. When one of those events
- occurs, your Bacula Events Class will be called at the method
- corresponding to the event. There are currently three events,
- JobStart, JobEnd, and Exit, which are described in detail below.
-
-\item [The Job Object]
- When a Job starts, and assuming you have defined a JobStart method
- in your Bacula Events Class, Bacula will create a Job Object. This
- object will be passed to the JobStart event. The Job Object has a
- has good number of read-only members or attributes providing many
- details of the Job, and it also has a number of writable attributes
- that allow you to pass information into the Job. These attributes
- are described below.
-
-\item [The Job Events Class]
- You create this class in the JobStart method of your Bacula Events
- class, and it allows you to define which of the possible Job Object
- events you want to see. You must pass an instance of your Job Events
- class to the Job Object set\_events() method.
- Normally, you will probably only have one
- Job Events Class, which will be instantiated for each Job. However,
- if you wish to see different events in different Jobs, you may have
- as many Job Events classes as you wish.
-\end{description}
-
-
-The first thing the startup script must do is to define what global Bacula
-events (daemon events), it wants to see. This is done by creating a
-Bacula Events class, instantiating it, then passing it to the
-{\bf set\_events} method. There are three possible
-events.
-
-\begin{description}
-\item [JobStart]
- \index[dir]{JobStart}
- This Python method, if defined, will be called each time a Job is started.
- The method is passed the class instantiation object as the first argument,
- and the Bacula Job object as the second argument. The Bacula Job object
- has several built-in methods, and you can define which ones you
- want called. If you do not define this method, you will not be able
- to interact with Bacula jobs.
-
-\item [JobEnd]
- This Python method, if defined, will be called each time a Job terminates.
- The method is passed the class instantiation object as the first argument,
- and the Bacula Job object as the second argument.
-
-\item [Exit]
- This Python method, if defined, will be called when the Director terminates.
- The method is passed the class instantiation object as the first argument.
-\end{description}
-
-Access to the Bacula variables and methods is done with:
-
- import bacula
-
-The following are the read-only attributes provided by the bacula object.
-\begin{description}
-\item [Name]
-\item [ConfigFile]
-\item [WorkingDir]
-\item [Version] string consisting of "Version Build-date"
-\end{description}
-
-
-A simple definition of the Bacula Events Class might be the following:
-
-\footnotesize
-\begin{verbatim}
-import sys, bacula
-class BaculaEvents:
- def JobStart(self, job):
- ...
-\end{verbatim}
-\normalsize
-
-Then to instantiate the class and pass it to Bacula, you
-would do:
-
-\footnotesize
-\begin{verbatim}
-bacula.set_events(BaculaEvents()) # register Bacula Events wanted
-\end{verbatim}
-\normalsize
-
-And at that point, each time a Job is started, your BaculaEvents JobStart
-method will be called.
-
-Now to actually do anything with a Job, you must define which Job events
-you want to see, and this is done by defining a JobEvents class containing
-the methods you want called. Each method name corresponds to one of the
-Job Events that Bacula will generate.
-
-A simple Job Events class might look like the following:
-
-\footnotesize
-\begin{verbatim}
-class JobEvents:
- def NewVolume(self, job):
- ...
-\end{verbatim}
-\normalsize
-
-Here, your JobEvents class method NewVolume will be called each time
-the Job needs a new Volume name. To actually register the events defined
-in your class with the Job, you must instantiate the JobEvents class and
-set it in the Job {\bf set\_events} variable. Note, this is a bit different
-from how you registered the Bacula events. The registration process must
-be done in the Bacula JobStart event (your method). So, you would modify
-Bacula Events (not the Job events) as follows:
-
-\footnotesize
-\begin{verbatim}
-import sys, bacula
-class BaculaEvents:
- def JobStart(self, job):
- events = JobEvents() # create instance of Job class
- job.set_events(events) # register Job events desired
- ...
-\end{verbatim}
-\normalsize
-
-When a job event is triggered, the appropriate event definition is
-called in the JobEvents class. This is the means by which your Python
-script or code gets control. Once it has control, it may read job
-attributes, or set them. See below for a list of read-only attributes,
-and those that are writable.
-
-In addition, the Bacula {\bf job} object in the Director has
-a number of methods (subroutines) that can be called. They
-are:
-\begin{description}
-\item [set\_events] The set\_events method takes a single
- argument, which is the instantiation of the Job Events class
- that contains the methods that you want called. The method
- names that will be called must correspond to the Bacula
- defined events. You may define additional methods but Bacula
- will not use them.
-\item [run] The run method takes a single string
- argument, which is the run command (same as in the Console)
- that you want to submit to start a new Job. The value
- returned by the run method is the JobId of the job that
- started, or -1 if there was an error.
-\item [write] The write method is used to be able to send
- print output to the Job Report. This will be described later.
-\item[cancel] The cancel method takes a single integer argument,
- which is a JobId. If JobId is found, it will be canceled.
-\item [DoesVolumeExist] The DoesVolumeExist method takes a single
- string argument, which is the Volume name, and returns
- 1 if the volume exists in the Catalog and 0 if the volume
- does not exist.
-\end{description}
-
-The following attributes are read/write within the Director
-for the {\bf job} object.
-
-\begin{description}
-\item [Priority] Read or set the Job priority.
- Note, that setting a Job Priority is effective only before
- the Job actually starts.
-\item [Level] This attribute contains a string representing the Job
- level, e.g. Full, Differential, Incremental, ... if read.
- The level can also be set.
-\end{description}
-
-The following read-only attributes are available within the Director
-for the {\bf job} object.
-
-\begin{description}
-\item [Type] This attribute contains a string representing the Job
- type, e.g. Backup, Restore, Verify, ...
-\item [JobId] This attribute contains an integer representing the
- JobId.
-\item [Client] This attribute contains a string with the name of the
- Client for this job.
-\item [NumVols] This attribute contains an integer with the number of
- Volumes in the Pool being used by the Job.
-\item [Pool] This attribute contains a string with the name of the Pool
- being used by the Job.
-\item [Storage] This attribute contains a string with the name of the
- Storage resource being used by the Job.
-\item [Catalog] This attribute contains a string with the name of the
- Catalog resource being used by the Job.
-\item [MediaType] This attribute contains a string with the name of the
- Media Type associated with the Storage resource being used by the Job.
-\item [Job] This attribute contains a string containing the name of the
- Job resource used by this job (not unique).
-\item [JobName] This attribute contains a string representing the full
- unique Job name.
-\item [JobStatus] This attribute contains a single character string
- representing the current Job status. The status may change
- during execution of the job. It may take on the following
- values:
- \begin{description}
- \item [C] Created, not yet running
- \item [R] Running
- \item [B] Blocked
- \item [T] Completed successfully
- \item [E] Terminated with errors
- \item [e] Non-fatal error
- \item [f] Fatal error
- \item [D] Verify found differences
- \item [A] Canceled by user
- \item [F] Waiting for Client
- \item [S] Waiting for Storage daemon
- \item [m] Waiting for new media
- \item [M] Waiting for media mount
- \item [s] Waiting for storage resource
- \item [j] Waiting for job resource
- \item [c] Waiting for client resource
- \item [d] Waiting on maximum jobs
- \item [t] Waiting on start time
- \item [p] Waiting on higher priority jobs
- \end{description}
-
-\item [Priority] This attribute contains an integer with the priority
- assigned to the job.
-\item [CatalogRes] tuple consisting of (DBName, Address, User,
- Password, Socket, Port, Database Vendor) taken from the Catalog resource
- for the Job with the exception of Database Vendor, which is
- one of the following: MySQL, PostgreSQL, SQLite, Internal,
- depending on what database you configured.
-\item [VolumeName]
- After a Volume has been purged, this attribute will contain the
- name of that Volume. At other times, this value may have no meaning.
-\end{description}
-
-The following write-only attributes are available within the
-Director:
-
-\begin{description}
-\item [JobReport] Send line to the Job Report.
-\item [VolumeName] Set a new Volume name. Valid only during the
- NewVolume event.
-\end{description}
-
-\section{Python Console Command}
-\index[general]{Python Console Command}
-\index[general]{Console Command!Python}
-
-There is a new Console command named {\bf python}. It takes
-a single argument {\bf restart}. Example:
-\begin{verbatim}
- python restart
-\end{verbatim}
-
-This command restarts the Python interpreter in the Director.
-This can be useful when you are modifying the DirStartUp script,
-because normally Python will cache it, and thus the
-script will be read one time.
-
-\section{Debugging Python Scripts}
-\index[general]{Debugging Python Scripts}
-In general, you debug your Python scripts by using print statements.
-You can also develop your script or important parts of it as a
-separate file using the Python interpreter to run it. Once you
-have it working correctly, you can then call the script from
-within the Bacula Python script (DirStartUp.py).
-
-If you are having problems loading DirStartUp.py, you will probably
-not get any error messages because Bacula can only print Python
-error messages after the Python interpreter is started. However, you
-may be able to see the error messages by starting Bacula in
-a shell window with the {\bf -d1} option on the command line. That
-should cause the Python error messages to be printed in the shell
-window.
-
-If you are getting error messages such as the following when
-loading DirStartUp.py:
-
-\begin{verbatim}
- Traceback (most recent call last):
- File "/etc/bacula/scripts/DirStartUp.py", line 6, in ?
- import time, sys, bacula
- ImportError: /usr/lib/python2.3/lib-dynload/timemodule.so: undefined
- symbol: PyInt_FromLong
- bacula-dir: pythonlib.c:134 Python Import error.
-\end{verbatim}
-
-It is because the DirStartUp script is calling a dynamically loaded
-module (timemodule.so in the above case) that then tries to use
-Python functions exported from the Python interpreter (in this case
-PyInt\_FromLong). The way Bacula is currently linked with Python does
-not permit this. The solution to the problem is to put such functions
-(in this case the import of time into a separate Python script, which
-will do your calculations and return the values you want. Then call
-(not import) this script from the Bacula DirStartUp.py script, and
-it all should work as you expect.
-
-
-
-
-
-\section{Python Example}
-\index[general]{Python Example}
-\index[general]{Example!Python}
-
-An example script for the Director startup file is provided in
-{\bf examples/python/DirStartup.py} as follows:
-
-\footnotesize
-\begin{verbatim}
-#
-# Bacula Python interface script for the Director
-#
-
-# You must import both sys and bacula
-import sys, bacula
-
-# This is the list of Bacula daemon events that you
-# can receive.
-class BaculaEvents(object):
- def __init__(self):
- # Called here when a new Bacula Events class is
- # is created. Normally not used
- noop = 1
-
- def JobStart(self, job):
- """
- Called here when a new job is started. If you want
- to do anything with the Job, you must register
- events you want to receive.
- """
- events = JobEvents() # create instance of Job class
- events.job = job # save Bacula's job pointer
- job.set_events(events) # register events desired
- sys.stderr = events # send error output to Bacula
- sys.stdout = events # send stdout to Bacula
- jobid = job.JobId; client = job.Client
- numvols = job.NumVols
- job.JobReport="Python Dir JobStart: JobId=%d Client=%s NumVols=%d\n" % (jobid,client,numvols)
-
- # Bacula Job is going to terminate
- def JobEnd(self, job):
- jobid = job.JobId
- client = job.Client
- job.JobReport="Python Dir JobEnd output: JobId=%d Client=%s.\n" % (jobid, client)
-
- # Called here when the Bacula daemon is going to exit
- def Exit(self, job):
- print "Daemon exiting."
-
-bacula.set_events(BaculaEvents()) # register daemon events desired
-
-"""
- These are the Job events that you can receive.
-"""
-class JobEvents(object):
- def __init__(self):
- # Called here when you instantiate the Job. Not
- # normally used
- noop = 1
-
- def JobInit(self, job):
- # Called when the job is first scheduled
- noop = 1
-
- def JobRun(self, job):
- # Called just before running the job after initializing
- # This is the point to change most Job parameters.
- # It is equivalent to the JobRunBefore point.
- noop = 1
-
- def NewVolume(self, job):
- # Called when Bacula wants a new Volume name. The Volume
- # name returned, if any, must be stored in job.VolumeName
- jobid = job.JobId
- client = job.Client
- numvol = job.NumVols;
- print job.CatalogRes
- job.JobReport = "JobId=%d Client=%s NumVols=%d" % (jobid, client, numvol)
- job.JobReport="Python before New Volume set for Job.\n"
- Vol = "TestA-%d" % numvol
- job.JobReport = "Exists=%d TestA-%d" % (job.DoesVolumeExist(Vol), numvol)
- job.VolumeName="TestA-%d" % numvol
- job.JobReport="Python after New Volume set for Job.\n"
- return 1
-
- def VolumePurged(self, job):
- # Called when a Volume is purged. The Volume name can be referenced
- # with job.VolumeName
- noop = 1
-
-
-
-\end{verbatim}
-\normalsize
+++ /dev/null
-%%
-%%
-
-\chapter{Using Stunnel to Encrypt Communications}
-\label{StunnelChapter}
-\index[general]{Using Stunnel to Encrypt Communications to Clients }
-
-Prior to version 1.37, Bacula did not have built-in communications encryption.
-Please see the \ilink {TLS chapter}{CommEncryption} if you are using Bacula
-1.37 or greater.
-
-Without too much effort, it is possible to encrypt the communications
-between any of the daemons. This chapter will show you how to use {\bf
-stunnel} to encrypt communications to your client programs. We assume the
-Director and the Storage daemon are running on one machine that will be called
-{\bf server} and the Client or File daemon is running on a different machine
-called {\bf client}. Although the details may be slightly different, the same
-principles apply whether you are encrypting between Unix, Linux, or Win32
-machines. This example was developed between two Linux machines running
-stunnel version 4.04-4 on a Red Hat Enterprise 3.0 system.
-
-\section{Communications Ports Used}
-\index[general]{Used!Communications Ports }
-\index[general]{Communications Ports Used }
-
-First, you must know that with the standard Bacula configuration, the Director
-will contact the File daemon on port 9102. The File daemon then contacts the
-Storage daemon using the address and port parameters supplied by the Director.
-The standard port used will be 9103. This is the typical server/client view of
-the world, the File daemon is a server to the Director (i.e. listens for the
-Director to contact it), and the Storage daemon is a server to the File
-daemon.
-
-\section{Encryption}
-\index[general]{Encryption }
-
-The encryption is accomplished between the Director and the File daemon by
-using an stunnel on the Director's machine (server) to encrypt the data and to
-contact an stunnel on the File daemon's machine (client), which decrypts the
-data and passes it to the client.
-
-Between the File daemon and the Storage daemon, we use an stunnel on the File
-daemon's machine to encrypt the data and another stunnel on the Storage
-daemon's machine to decrypt the data.
-
-As a consequence, there are actually four copies of stunnel running, two on the
-server and two on the client. This may sound a bit complicated, but it really
-isn't. To accomplish this, we will need to construct four separate conf files
-for stunnel, and we will need to make some minor modifications to the
-Director's conf file. None of the other conf files need to be changed.
-
-\section{A Picture}
-\index[general]{Picture }
-
-Since pictures usually help a lot, here is an overview of what we will be
-doing. Don't worry about all the details of the port numbers and such for the
-moment.
-
-\footnotesize
-\begin{verbatim}
- File daemon (client):
- stunnel-fd1.conf
- |===========|
- Port 29102 >----| Stunnel 1 |-----> Port 9102
- |===========|
- stunnel-fd2.conf
- |===========|
- Port 9103 >----| Stunnel 2 |-----> server:29103
- |===========|
- Director (server):
- stunnel-dir.conf
- |===========|
- Port 29102 >----| Stunnel 3 |-----> client:29102
- |===========|
- stunnel-sd.conf
- |===========|
- Port 29103 >----| Stunnel 4 |-----> 9103
- |===========|
-\end{verbatim}
-\normalsize
-
-\section{Certificates}
-\index[general]{Certificates }
-
-In order for stunnel to function as a server, which it does in our diagram for
-Stunnel 1 and Stunnel 4, you must have a certificate and the key. It is
-possible to keep the two in separate files, but normally, you keep them in one
-single .pem file. You may create this certificate yourself in which case, it
-will be self-signed, or you may have it signed by a CA.
-
-If you want your clients to verify that the server is in fact valid (Stunnel 2
-and Stunnel 3), you will need to have the server certificates signed by a CA
-(Certificate Authority), and you will need to have the CA's public certificate
-(contains the CA's public key).
-
-Having a CA signed certificate is {\bf highly} recommended if you are using
-your client across the Internet, otherwise you are exposed to the man in the
-middle attack and hence loss of your data.
-
-See below for how to create a self-signed certificate.
-
-\section{Securing the Data Channel}
-\index[general]{Channel!Securing the Data }
-\index[general]{Securing the Data Channel }
-
-To simplify things a bit, let's for the moment consider only the data channel.
-That is the connection between the File daemon and the Storage daemon, which
-takes place on port 9103. In fact, in a minimalist solution, this is the only
-connection that needs to be encrypted, because it is the one that transports your
-data. The connection between the Director and the File daemon is simply a
-control channel used to start the job and get the job status.
-
-Normally the File daemon will contact the Storage daemon on port 9103
-(supplied by the Director), so we need an stunnel that listens on port 9103 on
-the File daemon's machine, encrypts the data and sends it to the Storage
-daemon. This is depicted by Stunnel 2 above. Note that this stunnel is
-listening on port 9103 and sending to server:29103. We use port 29103 on the
-server because if we would send the data to port 9103, it would go directly to the
-Storage daemon, which doesn't understand encrypted data. On the server
-machine, we run Stunnel 4, which listens on port 29103, decrypts the data and
-sends it to the Storage daemon, which is listening on port 9103.
-
-\section{Data Channel Configuration}
-\index[general]{Modification of bacula-dir.conf for the Data Channel }
-\index[general]{baculoa-dir.conf!Modification for the Data Channel }
-
-The Storage resource of the bacula-dir.conf normally looks something like the
-following:
-
-\footnotesize
-\begin{verbatim}
-Storage {
- Name = File
- Address = server
- SDPort = 9103
- Password = storage_password
- Device = File
- Media Type = File
-}
-\end{verbatim}
-\normalsize
-
-Notice that this is running on the server machine, and it points the File
-daemon back to server:9103, which is where our Storage daemon is listening. We
-modify this to be:
-
-\footnotesize
-\begin{verbatim}
-Storage {
- Name = File
- Address = localhost
- SDPort = 9103
- Password = storage_password
- Device = File
- Media Type = File
-}
-\end{verbatim}
-\normalsize
-
-This causes the File daemon to send the data to the stunnel running on
-localhost (the client machine). We could have used client as the address as
-well.
-
-\section{Stunnel Configuration for the Data Channel}
-\index[general]{Stunnel Configuration for the Data Channel }
-
-In the diagram above, we see above Stunnel 2 that we use stunnel-fd2.conf on the
-client. A pretty much minimal config file would look like the following:
-
-\footnotesize
-\begin{verbatim}
-client = yes
-[29103]
-accept = localhost:9103
-connect = server:29103
-\end{verbatim}
-\normalsize
-
-The above config file does encrypt the data but it does not require a
-certificate, so it is subject to the man in the middle attack. The file I
-actually used, stunnel-fd2.conf, looked like this:
-
-\footnotesize
-\begin{verbatim}
-#
-# Stunnel conf for Bacula client -> SD
-#
-pid = /home/kern/bacula/bin/working/stunnel.pid
-#
-# A cert is not mandatory here. If verify=2, a
-# cert signed by a CA must be specified, and
-# either CAfile or CApath must point to the CA's
-# cert
-#
-cert = /home/kern/stunnel/stunnel.pem
-CAfile = /home/kern/ssl/cacert.pem
-verify = 2
-client = yes
-# debug = 7
-# foreground = yes
-[29103]
-accept = localhost:9103
-connect = server:29103
-\end{verbatim}
-\normalsize
-
-You will notice that I specified a pid file location because I ran stunnel
-under my own userid so I could not use the default, which requires root
-permission. I also specified a certificate that I have as well as verify level
-2 so that the certificate is required and verified, and I must supply the
-location of the CA (Certificate Authority) certificate so that the stunnel
-certificate can be verified. Finally, you will see that there are two lines
-commented out, which when enabled, produce a lot of nice debug info in the
-command window.
-
-If you do not have a signed certificate (stunnel.pem), you need to delete the
-cert, CAfile, and verify lines.
-
-Note that the stunnel.pem, is actually a private key and a certificate in a
-single file. These two can be kept and specified individually, but keeping
-them in one file is more convenient.
-
-The config file, stunnel-sd.conf, needed for Stunnel 4 on the server machine
-is:
-
-\footnotesize
-\begin{verbatim}
-#
-# Bacula stunnel conf for Storage daemon
-#
-pid = /home/kern/bacula/bin/working/stunnel.pid
-#
-# A cert is mandatory here, it may be self signed
-# If it is self signed, the client may not use
-# verify
-#
-cert = /home/kern/stunnel/stunnel.pem
-client = no
-# debug = 7
-# foreground = yes
-[29103]
-accept = 29103
-connect = 9103
-\end{verbatim}
-\normalsize
-
-\section{Starting and Testing the Data Encryption}
-\index[general]{Starting and Testing the Data Encryption }
-\index[general]{Encryption!Starting and Testing the Data }
-
-It will most likely be the simplest to implement the Data Channel encryption
-in the following order:
-
-\begin{itemize}
-\item Setup and run Bacula backing up some data on your client machine
- without encryption.
-\item Stop Bacula.
-\item Modify the Storage resource in the Director's conf file.
-\item Start Bacula
-\item Start stunnel on the server with:
-
- \footnotesize
-\begin{verbatim}
- stunnel stunnel-sd.conf
-
-\end{verbatim}
-\normalsize
-
-\item Start stunnel on the client with:
-
- \footnotesize
-\begin{verbatim}
- stunnel stunnel-fd2.conf
-
-\end{verbatim}
-\normalsize
-
-\item Run a job.
-\item If it doesn't work, turn debug on in both stunnel conf files, restart
- the stunnels, rerun the job, repeat until it works.
- \end{itemize}
-
-\section{Encrypting the Control Channel}
-\index[general]{Channel!Encrypting the Control }
-\index[general]{Encrypting the Control Channel }
-
-The Job control channel is between the Director and the File daemon, and as
-mentioned above, it is not really necessary to encrypt, but it is good
-practice to encrypt it as well. The two stunnels that are used in this case
-will be Stunnel 1 and Stunnel 3 in the diagram above. Stunnel 3 on the server
-might normally listen on port 9102, but if you have a local File daemon, this
-will not work, so we make it listen on port 29102. It then sends the data to
-client:29102. Again we use port 29102 so that the stunnel on the client
-machine can decrypt the data before passing it on to port 9102 where the File
-daemon is listening.
-
-\section{Control Channel Configuration}
-\index[general]{Control Channel Configuration }
-
-We need to modify the standard Client resource, which would normally look
-something like:
-
-\footnotesize
-\begin{verbatim}
-Client {
- Name = client-fd
- Address = client
- FDPort = 9102
- Catalog = BackupDB
- Password = "xxx"
-}
-\end{verbatim}
-\normalsize
-
-to be:
-
-\footnotesize
-\begin{verbatim}
-Client {
- Name = client-fd
- Address = localhost
- FDPort = 29102
- Catalog = BackupDB
- Password = "xxx"
-}
-\end{verbatim}
-\normalsize
-
-This will cause the Director to send the control information to
-localhost:29102 instead of directly to the client.
-
-\section{Stunnel Configuration for the Control Channel}
-\index[general]{Config Files for stunnel to Encrypt the Control Channel }
-
-The stunnel config file, stunnel-dir.conf, for the Director's machine would
-look like the following:
-
-\footnotesize
-\begin{verbatim}
-#
-# Bacula stunnel conf for the Directory to contact a client
-#
-pid = /home/kern/bacula/bin/working/stunnel.pid
-#
-# A cert is not mandatory here. If verify=2, a
-# cert signed by a CA must be specified, and
-# either CAfile or CApath must point to the CA's
-# cert
-#
-cert = /home/kern/stunnel/stunnel.pem
-CAfile = /home/kern/ssl/cacert.pem
-verify = 2
-client = yes
-# debug = 7
-# foreground = yes
-[29102]
-accept = localhost:29102
-connect = client:29102
-\end{verbatim}
-\normalsize
-
-and the config file, stunnel-fd1.conf, needed to run stunnel on the Client
-would be:
-
-\footnotesize
-\begin{verbatim}
-#
-# Bacula stunnel conf for the Directory to contact a client
-#
-pid = /home/kern/bacula/bin/working/stunnel.pid
-#
-# A cert is not mandatory here. If verify=2, a
-# cert signed by a CA must be specified, and
-# either CAfile or CApath must point to the CA's
-# cert
-#
-cert = /home/kern/stunnel/stunnel.pem
-CAfile = /home/kern/ssl/cacert.pem
-verify = 2
-client = yes
-# debug = 7
-# foreground = yes
-[29102]
-accept = localhost:29102
-connect = client:29102
-\end{verbatim}
-\normalsize
-
-\section{Starting and Testing the Control Channel}
-\index[general]{Starting and Testing the Control Channel }
-\index[general]{Channel!Starting and Testing the Control }
-
-It will most likely be the simplest to implement the Control Channel
-encryption in the following order:
-
-\begin{itemize}
-\item Stop Bacula.
-\item Modify the Client resource in the Director's conf file.
-\item Start Bacula
-\item Start stunnel on the server with:
-
- \footnotesize
-\begin{verbatim}
- stunnel stunnel-dir.conf
-
-\end{verbatim}
-\normalsize
-
-\item Start stunnel on the client with:
-
- \footnotesize
-\begin{verbatim}
- stunnel stunnel-fd1.conf
-
-\end{verbatim}
-\normalsize
-
-\item Run a job.
-\item If it doesn't work, turn debug on in both stunnel conf files, restart
- the stunnels, rerun the job, repeat until it works.
- \end{itemize}
-
-\section{Using stunnel to Encrypt to a Second Client}
-\index[general]{Using stunnel to Encrypt to a Second Client }
-\index[general]{Client!Using stunnel to Encrypt to a Second }
-
-On the client machine, you can just duplicate the setup that you have on the
-first client file for file and it should work fine.
-
-In the bacula-dir.conf file, you will want to create a second client pretty
-much identical to how you did for the first one, but the port number must be
-unique. We previously used:
-
-\footnotesize
-\begin{verbatim}
-Client {
- Name = client-fd
- Address = localhost
- FDPort = 29102
- Catalog = BackupDB
- Password = "xxx"
-}
-\end{verbatim}
-\normalsize
-
-so for the second client, we will, of course, have a different name, and we
-will also need a different port. Remember that we used port 29103 for the
-Storage daemon, so for the second client, we can use port 29104, and the
-Client resource would look like:
-
-\footnotesize
-\begin{verbatim}
-Client {
- Name = client2-fd
- Address = localhost
- FDPort = 29104
- Catalog = BackupDB
- Password = "yyy"
-}
-\end{verbatim}
-\normalsize
-
-Now, fortunately, we do not need a third stunnel to on the Director's machine,
-we can just add the new port to the config file, stunnel-dir.conf, to make:
-
-\footnotesize
-\begin{verbatim}
-#
-# Bacula stunnel conf for the Directory to contact a client
-#
-pid = /home/kern/bacula/bin/working/stunnel.pid
-#
-# A cert is not mandatory here. If verify=2, a
-# cert signed by a CA must be specified, and
-# either CAfile or CApath must point to the CA's
-# cert
-#
-cert = /home/kern/stunnel/stunnel.pem
-CAfile = /home/kern/ssl/cacert.pem
-verify = 2
-client = yes
-# debug = 7
-# foreground = yes
-[29102]
-accept = localhost:29102
-connect = client:29102
-[29104]
-accept = localhost:29102
-connect = client2:29102
-\end{verbatim}
-\normalsize
-
-There are no changes necessary to the Storage daemon or the other stunnel so
-that this new client can talk to our Storage daemon.
-
-\section{Creating a Self-signed Certificate}
-\index[general]{Creating a Self-signed Certificate }
-\index[general]{Certificate!Creating a Self-signed }
-
-You may create a self-signed certificate for use with stunnel that will permit
-you to make it function, but will not allow certificate validation. The .pem
-file containing both the certificate and the key can be made with the
-following, which I put in a file named {\bf makepem}:
-
-\footnotesize
-\begin{verbatim}
-#!/bin/sh
-#
-# Simple shell script to make a .pem file that can be used
-# with stunnel and Bacula
-#
-OPENSSL=openssl
- umask 77
- PEM1="/bin/mktemp openssl.XXXXXX"
- PEM2="/bin/mktemp openssl.XXXXXX"
- ${OPENSSL} req -newkey rsa:1024 -keyout $PEM1 -nodes \
- -x509 -days 365 -out $PEM2
- cat $PEM1 > stunnel.pem
- echo "" >>stunnel.pem
- cat $PEM2 >>stunnel.pem
- rm $PEM1 $PEM2
-\end{verbatim}
-\normalsize
-
-The above script will ask you a number of questions. You may simply answer
-each of them by entering a return, or if you wish you may enter your own data.
-
-
-\section{Getting a CA Signed Certificate}
-\index[general]{Certificate!Getting a CA Signed }
-\index[general]{Getting a CA Signed Certificate }
-
-The process of getting a certificate that is signed by a CA is quite a bit
-more complicated. You can purchase one from quite a number of PKI vendors, but
-that is not at all necessary for use with Bacula.
-
-To get a CA signed
-certificate, you will either need to find a friend that has setup his own CA
-or to become a CA yourself, and thus you can sign all your own certificates.
-The book OpenSSL by John Viega, Matt Mesier \& Pravir Chandra from O'Reilly
-explains how to do it, or you can read the documentation provided in the
-Open-source PKI Book project at Source Forge:
-\elink{
-http://ospkibook.sourceforge.net/docs/OSPKI-2.4.7/OSPKI-html/ospki-book.htm}
-{http://ospkibook.sourceforge.net/docs/OSPKI-2.4.7/OSPKI-html/ospki-book.htm}.
-Note, this link may change.
-
-\section{Using ssh to Secure the Communications}
-\index[general]{Communications!Using ssh to Secure the }
-\index[general]{Using ssh to Secure the Communications }
-
-Please see the script {\bf ssh-tunnel.sh} in the {\bf examples} directory. It
-was contributed by Stephan Holl.
+++ /dev/null
-%%
-%%
-
-\chapter{Variable Expansion}
-\label{VarsChapter}
-\index[general]{Variable Expansion }
-\index[general]{Expansion!Variable }
-
-% TODO: does the following mean that this should not be in book?
-
-Please note that as of version 1.37, the Variable Expansion
-is deprecated and replaced by Python scripting (not yet
-documented).
-
-Variable expansion is somewhat similar to Unix shell variable expansion.
-Currently (version 1.31), it is used only in format labels, but in the future,
-it will most likely be used in more places.
-
-\section{General Functionality}
-\index[general]{Functionality!General }
-\index[general]{General Functionality }
-
-This is basically a string expansion capability that permits referencing
-variables, indexing arrays, conditional replacement of variables, case
-conversion, substring selection, regular expression matching and replacement,
-character class replacement, padding strings, repeated expansion in a user
-controlled loop, support of arithmetic expressions in the loop start, step and
-end conditions, and recursive expansion.
-
-When using variable expansion characters in a Volume Label Format record, the
-format should always be enclosed in double quotes ({\bf "}).
-
-For example, {\bf \$\{HOME\}} will be replaced by your home directory as
-defined in the environment. If you have defined the variable {\bf xxx} to be
-{\bf Test}, then the reference {\bf \$\{xxx:p/7/Y/r\}} will right pad the
-contents of {\bf xxx} to a length of seven characters filling with the
-character {\bf Y} giving {\bf YYYTest}.
-
-\section{Bacula Variables}
-\index[general]{Bacula Variables }
-\index[general]{Variables!Bacula }
-
-Within Bacula, there are three main classes of variables with some minor
-variations within the classes. The classes are:
-
-\begin{description}
-
-\item [Counters]
- \index[dir]{Counters }
- Counters are defined by the {\bf Counter} resources in the Director's conf
-file. The counter can either be a temporary counter that lasts for the
-duration of Bacula's execution, or it can be a variable that is stored in
-the catalog, and thus retains its value from one Bacula execution to another.
-Counter variables may be incremented by postfixing a plus sign ({\bf +} after
-the variable name).
-
-\item [Internal Variables]
- \index[dir]{Internal Variables }
- Internal variables are read-only, and may be related to the current job (i.e.
-Job name), or maybe special variables such as the date and time. The
-following variables are available:
-
-\begin{itemize}
-\item [Year] -- the full year
-\item [Month] -- the current month 1-12
-\item [Day] -- the day of the month 1-31
-\item [Hour] -- the hour 0-24
-\item [Minute] -- the current minute 0-59
-\item [Second] -- the current second 0-59
-\item [WeekDay] -- the current day of the week 0-6 with 0 being Sunday
-\item [Job] -- the job name
-\item [Dir] -- the Director's name
-\item [Level] -- the Job Level
-\item [Type] -- the Job type
-\item [JobId] -- the JobId
-\item [JobName] -- the unique job name composed of Job and date
-\item [Storage] -- the Storage daemon's name
-\item [Client] -- the Client's name
-\item [NumVols] -- the current number of Volumes in the Pool
-\item [Pool] -- the Pool name
-\item [Catalog] -- the Catalog name
-\item [MediaType] -- the Media Type
- \end{itemize}
-
-\item [Environment Variables]
- \index[dir]{Environment Variables }
- Environment variables are read-only, and must be defined in the environment
-prior to executing Bacula. Environment variables may be either scalar or an
-array, where the elements of the array are referenced by subscripting the
-variable name (e.g. {\bf \$\{Months[3]\}}). Environment variable arrays are
-defined by separating the elements with a vertical bar ({\bf |}), thus {\bf
-set Months="Jan|Feb|Mar|Apr|..."} defines an environment variable named
-{\bf Month} that will be treated as an array, and the reference {\bf
-\$\{Months[3]\}} will yield {\bf Mar}. The elements of the array can have
-differing lengths.
-\end{description}
-
-\section{Full Syntax}
-\index[general]{Syntax!Full }
-\index[general]{Full Syntax }
-
-Since the syntax is quite extensive, below, you will find the pseudo BNF. The
-special characters have the following meaning:
-
-\footnotesize
-\begin{verbatim}
- ::= definition
- ( ) grouping if the parens are not quoted
- | separates alternatives
- '/' literal / (or any other character)
- CAPS a character or character sequence
- * preceding item can be repeated zero or more times
- ? preceding item can appear zero or one time
- + preceding item must appear one or more times
-\end{verbatim}
-\normalsize
-
-And the pseudo BNF describing the syntax is:
-
-\footnotesize
-\begin{verbatim}
- input ::= ( TEXT
- | variable
- | INDEX_OPEN input INDEX_CLOSE (loop_limits)?
- )*
- variable ::= DELIM_INIT (name|expression)
- name ::= (NAME_CHARS)+
- expression ::= DELIM_OPEN
- (name|variable)+
- (INDEX_OPEN num_exp INDEX_CLOSE)?
- (':' command)*
- DELIM_CLOSE
- command ::= '-' (TEXT_EXP|variable)+
- | '+' (TEXT_EXP|variable)+
- | 'o' NUMBER ('-'|',') (NUMBER)?
- | '#'
- | '*' (TEXT_EXP|variable)+
- | 's' '/' (TEXT_PATTERN)+
- '/' (variable|TEXT_SUBST)*
- '/' ('m'|'g'|'i'|'t')*
- | 'y' '/' (variable|TEXT_SUBST)+
- '/' (variable|TEXT_SUBST)*
- '/'
- | 'p' '/' NUMBER
- '/' (variable|TEXT_SUBST)*
- '/' ('r'|'l'|'c')
- | '%' (name|variable)+
- ('(' (TEXT_ARGS)? ')')?
- | 'l'
- | 'u'
- num_exp ::= operand
- | operand ('+'|'-'|'*'|'/'|'%') num_exp
- operand ::= ('+'|'-')? NUMBER
- | INDEX_MARK
- | '(' num_exp ')'
- | variable
- loop_limits ::= DELIM_OPEN
- (num_exp)? ',' (num_exp)? (',' (num_exp)?)?
- DELIM_CLOSE
- NUMBER ::= ('0'|...|'9')+
- TEXT_PATTERN::= (^('/'))+
- TEXT_SUBST ::= (^(DELIM_INIT|'/'))+
- TEXT_ARGS ::= (^(DELIM_INIT|')'))+
- TEXT_EXP ::= (^(DELIM_INIT|DELIM_CLOSE|':'|'+'))+
- TEXT ::= (^(DELIM_INIT|INDEX_OPEN|INDEX_CLOSE))+
- DELIM_INIT ::= '$'
- DELIM_OPEN ::= '{'
- DELIM_CLOSE ::= '}'
- INDEX_OPEN ::= '['
- INDEX_CLOSE ::= ']'
- INDEX_MARK ::= '#'
- NAME_CHARS ::= 'a'|...|'z'|'A'|...|'Z'|'0'|...|'9'
-\end{verbatim}
-\normalsize
-
-\section{Semantics}
-\index[general]{Semantics }
-
-The items listed in {\bf command} above, which always follow a colon ({\bf :})
-have the following meanings:
-
-\footnotesize
-\begin{verbatim}
- - perform substitution if variable is empty
- + perform substitution if variable is not empty
- o cut out substring of the variable value
- # length of the variable value
- * substitute empty string if the variable value is not empty,
- otherwise substitute the trailing parameter
- s regular expression search and replace. The trailing
- options are: m = multiline, i = case insensitive,
- g = global, t = plain text (no regexp)
- y transpose characters from class A to class B
- p pad variable to l = left, r = right or c = center,
- with second value.
- % special function call (none implemented)
- l lower case the variable value
- u upper case the variable value
-\end{verbatim}
-\normalsize
-
-The {\bf loop\_limits} are start, step, and end values.
-
-A counter variable name followed immediately by a plus ({\bf +}) will cause
-the counter to be incremented by one.
-
-\section{Examples}
-\index[general]{Examples }
-
-To create an ISO date:
-
-\footnotesize
-\begin{verbatim}
- DLT-${Year}-${Month:p/2/0/r}-${Day:p/2/0/r}
-\end{verbatim}
-\normalsize
-
-on 20 June 2003 would give {\bf DLT-2003-06-20}
-
-If you set the environment variable {\bf mon} to
-
-\footnotesize
-\begin{verbatim}
- January|February|March|April|May|...
- File-${mon[${Month}]}/${Day}/${Year}
-\end{verbatim}
-\normalsize
-
-on the first of March would give {\bf File-March/1/2003 }
\markboth{Bacula Version \version}{Bacula Version \version}
\pagenumbering{arabic}
-\part{Catalog Database}
-\include{catalog/catmaintenance}
-\include{catalog/mysql}
-\include{catalog/postgresql}
-\include{catalog/sqlite}
-\include{catalog/internaldb}
-
\part{Concepts and Overview}
\include{concepts/general}
\include{concepts/newfeatures}
\include{concepts/verify}
\include{concepts/bootstrap}
-\part{Console and Operators}
-\include{console/bconsole}
-\include{console/gui}
-
\part{Installation and Configuration}
\include{install/quickstart}
\include{install/installation}
\include{install/monitorconf}
\include{install/security}
+\part{Console and Operators}
+\include{console/bconsole}
+\include{console/gui}
+
+\part{Catalog Database}
+\include{catalog/catmaintenance}
+\include{catalog/mysql}
+\include{catalog/postgresql}
+\include{catalog/sqlite}
+\include{catalog/internaldb}
+
\part{Problem and Resolution}
\include{problems/faq}
\include{problems/tips}
--- /dev/null
+#
+#
+# Makefile for LaTeX
+#
+# To build everything do
+# make tex
+# make web
+# make html
+# make dvipdf
+#
+# or simply
+#
+# make
+#
+# for rapid development do:
+# make tex
+# make show
+#
+#
+# If you are having problems getting "make" to work, debugging it is
+# easier if can see the output from latex, which is normally redirected
+# to /dev/null. To see it, do the following:
+#
+# cd docs/manual
+# make tex
+# latex bacula.tex
+#
+# typically the latex command will stop indicating the error (e.g. a
+# missing \ in front of a _ or a missing { or ] ...
+#
+# The following characters must be preceded by a backslash
+# to be entered as printable characters:
+#
+# # $ % & ~ _ ^ \ { }
+#
+
+IMAGES=../../../images
+
+DOC=misc
+
+first_rule: all
+
+all: tex web dvipdf mini-clean
+
+.SUFFIXES: .tex .html
+.PHONY:
+.DONTCARE:
+
+
+tex:
+ @./update_version
+ @echo "Making version `cat version.tex`"
+ @cp -fp ${IMAGES}/hires/*.eps .
+ @touch ${DOC}i-dir.tex ${DOC}i-fd.tex ${DOC}i-sd.tex \
+ ${DOC}i-console.tex ${DOC}i-general.tex
+ latex -interaction=batchmode ${DOC}.tex
+ makeindex ${DOC}.idx -o ${DOC}.ind 2>/dev/null
+ latex -interaction=batchmode ${DOC}.tex
+
+pdf:
+ @echo "Making pdfm"
+ @cp -fp ${IMAGES}/hires/*.eps .
+ dvipdfm -p a4 ${DOC}.dvi
+
+dvipdf:
+ @echo "Making dvi to pdf"
+ @cp -fp ${IMAGES}/hires/*.eps .
+ dvipdf ${DOC}.dvi ${DOC}.pdf
+
+html:
+ @echo " "
+ @echo "Making html"
+ @cp -fp ${IMAGES}/*.eps .
+ @rm -f next.eps next.png prev.eps prev.png up.eps up.png
+ @(if [ -f imagename_translations ] ; then \
+ ./translate_images.pl --from_meaningful_names ${DOC}.html; \
+ fi)
+ latex2html -white -no_subdir -split 0 -toc_stars -white \
+ -init_file latex2html-init.pl ${DOC} >tex.out 2>&1
+ ./translate_images.pl --to_meaningful_names ${DOC}.html
+ (cd ${DOC}; for i in *.png ; do cp -fp ../${IMAGES}/$${i} . 2>/dev/null; done)
+ @echo "Done making html"
+
+web:
+ @echo "Making web"
+ @mkdir -p ${DOC}
+ @cp -fp ${IMAGES}/*.eps .
+ @rm -f next.eps next.png prev.eps prev.png up.eps up.png
+ @cp -fp ${IMAGES}/*.eps ${DOC}/
+ @cp -fp ${IMAGES}/*.eps ${IMAGES}/*.png ${DOC}/
+ @rm -f ${DOC}/xp-*.png
+ @rm -f ${DOC}/next.eps ${DOC}/next.png ${DOC}/prev.eps ${DOC}/prev.png ${DOC}/up.eps ${DOC}/up.png
+ @rm -rf ${DOC}/*.html
+ latex2html -split 3 -local_icons -t "Miscellaneous Guide" -long_titles 4 \
+ -toc_stars -contents_in_nav -init_file latex2html-init.pl -white ${DOC} >tex.out 2>&1
+ ./translate_images.pl --to_meaningful_names ${DOC}/Miscel_Guide.html
+ (cd ${DOC}; for i in *.png ; do cp -fp ../${IMAGES}/$${i} . 2>/dev/null; done)
+ @echo "Done making web"
+show:
+ xdvi ${DOC}
+
+texcheck:
+ ./check_tex.pl ${DOC}.tex
+
+main_configs:
+ pic2graph -density 100 <main_configs.pic >main_configs.png
+
+mini-clean:
+ @rm -f 1 2 3 *.tex~
+ @rm -f *.gif *.jpg *.eps
+ @rm -f *.aux *.cp *.fn *.ky *.log *.pg
+ @rm -f *.backup *.ilg *.lof *.lot
+ @rm -f *.cdx *.cnd *.ddx *.ddn *.fdx *.fnd *.ind *.sdx *.snd
+ @rm -f *.dnd *.old *.out
+ @rm -f ${DOC}/*.gif ${DOC}/*.jpg ${DOC}/*.eps
+ @rm -f ${DOC}/*.aux ${DOC}/*.cp ${DOC}/*.fn ${DOC}/*.ky ${DOC}/*.log ${DOC}/*.pg
+ @rm -f ${DOC}/*.backup ${DOC}/*.ilg ${DOC}/*.lof ${DOC}/*.lot
+ @rm -f ${DOC}/*.cdx ${DOC}/*.cnd ${DOC}/*.ddx ${DOC}/*.ddn ${DOC}/*.fdx ${DOC}/*.fnd ${DOC}/*.ind ${DOC}/*.sdx ${DOC}/*.snd
+ @rm -f ${DOC}/*.dnd ${DOC}/*.old ${DOC}/*.out
+ @rm -f ${DOC}/WARNINGS
+
+
+clean:
+ @rm -f 1 2 3 *.tex~
+ @rm -f *.png *.gif *.jpg *.eps
+ @rm -f *.pdf *.aux *.cp *.fn *.ky *.log *.pg
+ @rm -f *.html *.backup *.ps *.dvi *.ilg *.lof *.lot
+ @rm -f *.cdx *.cnd *.ddx *.ddn *.fdx *.fnd *.ind *.sdx *.snd
+ @rm -f *.dnd imagename_translations
+ @rm -f *.old WARNINGS *.out *.toc *.idx
+ @rm -f ${DOC}i-*.tex
+ @rm -rf ${DOC}
+
+
+distclean: clean
+ @rm -f images.pl labels.pl internals.pl
+ @rm -f Makefile version.tex
--- /dev/null
+\newfont{\bighead}{cmr17 at 36pt}
+\parskip 10pt
+\parindent 0pt
+
+\title{\includegraphics{\idir bacula-logo.eps} \\ \bigskip
+ \Huge{Bacula}$^{\normalsize \textregistered}$ \Huge{Miscellaneous Guide}
+ \begin{center}
+ \large{It comes in the night and sucks
+ the essence from your computers. }
+ \end{center}
+}
+
+
+\author{Kern Sibbald}
+\date{\vspace{1.0in}\today \\
+ This manual documents Bacula version \fullversion \\
+ \vspace{0.2in}
+ Copyright {\copyright} 1999-2009, Free Software Foundation Europe
+ e.V. \\
+ Bacula {\textregistered} is a registered trademark of Kern Sibbald.\\
+ \vspace{0.2in}
+ Permission is granted to copy, distribute and/or modify this document under the terms of the
+ GNU Free Documentation License, Version 1.2 published by the Free Software Foundation;
+ with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
+ A copy of the license is included in the section entitled "GNU Free Documentation License".
+}
+
+\maketitle
--- /dev/null
+#
+# Avoid that @VERSION@ and @DATE@ are changed by configure
+# This file is sourced by update_version
+#
+echo "s%@VERSION@%${VERSION}%g" >${out}
+echo "s%@DATE@%${DATE}%g" >>${out}
--- /dev/null
+%%
+%%
+
+\chapter{DVD Volumes}
+\label{_DVDChapterStart}
+\index[general]{DVD Volumes}
+\index[general]{Writing DVDs}
+\index[general]{DVD Writing}
+\index[general]{Volumes!DVD}
+
+Bacula allows you to specify that you want to write to DVD. However,
+this feature is implemented only in version 1.37 or later.
+You may in fact write to DVD+RW, DVD+R, DVD-R, or DVD-RW
+media. The actual process used by Bacula is to first write
+the image to a spool directory, then when the Volume reaches
+a certain size or, at your option, at the end of a Job, Bacula
+will transfer the image from the spool directory to the
+DVD. The actual work of transferring the image is done
+by a script {\bf dvd-handler}, and the heart of that
+script is a program called {\bf growisofs} which allows
+creating or adding to a DVD ISO filesystem.
+
+You must have {\bf dvd+rw-tools} loaded on your system for DVD writing to
+work. Please note that the original {\bf dvd+rw-tools} package does {\bf
+NOT} work with Bacula. You must apply a patch which can be found in the
+{\bf patches} directory of Bacula sources with the name
+{\bf dvd+rw-tools-5.21.4.10.8.bacula.patch} for version 5.21 of the tools,
+or patch {bf dvd+rw-tools-6.1.bacula.patch} if you have version 6.1
+on your system. Unfortunately, this requires you to build the dvd\_rw-tools
+from source.
+
+Note, some Linux distros such as Debian dvd+rw-tools-7.0-4 package already
+have the patch applied, so please check.
+
+The fact that Bacula cannot use the OS to write directly
+to the DVD makes the whole process a bit more error prone than
+writing to a disk or a tape, but nevertheless, it does work if you
+use some care to set it up properly. However, at the current time
+(version 1.39.30 -- 12 December 2006) we still consider this code to be
+BETA quality. As a consequence, please do careful testing before relying
+on DVD backups in production.
+
+The remainder of this chapter explains the various directives that you can
+use to control the DVD writing.
+
+\label{DVDdirectives}
+\section{DVD Specific SD Directives}
+\index[general]{Directives!DVD}
+\index[general]{DVD Specific SD Directives }
+
+The following directives are added to the Storage daemon's
+Device resource.
+
+\begin{description}
+
+\item [Requires Mount = {\it Yes|No}]
+ \index[general]{Requires Mount }
+ You must set this directive to {\bf yes} for DVD-writers, and to {\bf no} for
+ all other devices (tapes/files). This directive indicates if the device
+ requires to be mounted using the {\bf Mount Command}.
+ To be able to write a DVD, the following directives must also be
+ defined: {\bf Mount Point}, {\bf Mount Command}, {\bf Unmount Command} and
+ {\bf Write Part Command}.
+
+\item [Mount Point = {\it directory}]
+ \index[general]{Mount Point}
+ Directory where the device can be mounted.
+
+\item [Mount Command = {\it name-string}]
+ \index[general]{Mount Command}
+ Command that must be executed to mount the device. Although the
+ device is written directly, the mount command is necessary in
+ order to determine the free space left on the DVD. Before the command is
+ executed, \%a is replaced with the Archive Device, and \%m with the Mount
+ Point.
+
+ Most frequently, you will define it as follows:
+
+\footnotesize
+\begin{verbatim}
+ Mount Command = "/bin/mount -t iso9660 -o ro %a %m"
+\end{verbatim}
+\normalsize
+
+However, if you have defined a mount point in /etc/fstab, you might be
+able to use a mount command such as:
+
+\footnotesize
+\begin{verbatim}
+ Mount Command = "/bin/mount /media/dvd"
+\end{verbatim}
+\normalsize
+
+
+\item [Unmount Command = {\it name-string}]
+ \index[general]{Unmount Command}
+ Command that must be executed to unmount the device. Before the command is
+ executed, \%a is replaced with the Archive Device, and \%m with the Mount
+ Point.
+
+ Most frequently, you will define it as follows:
+
+\footnotesize
+\begin{verbatim}
+ Unmount Command = "/bin/umount %m"
+\end{verbatim}
+\normalsize
+
+\item [Write Part Command = {\it name-string}]
+ \index[general]{Write Part Command }
+ Command that must be executed to write a part to the device. Before the
+ command is executed, \%a is replaced with the Archive Device, \%m with the
+ Mount Point, \%e is replaced with 1 if we are writing the first part,
+ and with 0 otherwise, and \%v with the current part filename.
+
+ For a DVD, you will most frequently specify the Bacula supplied {\bf
+ dvd-handler} script as follows:
+
+\footnotesize
+\begin{verbatim}
+ Write Part Command = "/path/dvd-handler %a write %e %v"
+\end{verbatim}
+\normalsize
+
+ Where {\bf /path} is the path to your scripts install directory, and
+ dvd-handler is the Bacula supplied script file.
+ This command will already be present, but commented out,
+ in the default bacula-sd.conf file. To use it, simply remove
+ the comment (\#) symbol.
+
+
+\item [Free Space Command = {\it name-string}]
+ \index[general]{Free Space Command }
+ Command that must be executed to check how much free space is left on the
+ device. Before the command is executed,\%a is replaced with the Archive
+ Device.
+
+ For a DVD, you will most frequently specify the Bacula supplied {\bf
+ dvd-handler} script as follows:
+
+\footnotesize
+\begin{verbatim}
+ Free Space Command = "/path/dvd-handler %a free"
+\end{verbatim}
+\normalsize
+
+ Where {\bf /path} is the path to your scripts install directory, and
+ dvd-handler is the Bacula supplied script file.
+ If you want to specify your own command, please look at the code in
+ dvd-handler to see what output Bacula expects from this command.
+ This command will already be present, but commented out,
+ in the default bacula-sd.conf file. To use it, simply remove
+ the comment (\#) symbol.
+
+ If you do not set it, Bacula will expect there is always free space on the
+ device.
+
+\end{description}
+
+In addition to the directives specified above, you must also
+specify the other standard Device resource directives. Please see the
+sample DVD Device resource in the default bacula-sd.conf file. Be sure
+to specify the raw device name for {\bf Archive Device}. It should
+be a name such as {\bf /dev/cdrom} or {\bf /media/cdrecorder} or
+{\bf /dev/dvd} depending on your system. It will not be a name such
+as {\bf /mnt/cdrom}.
+
+Finally, for {\bf growisofs} to work, it must be able to lock
+a certain amount of memory in RAM. If you have restrictions on
+this function, you may have failures. Under {\bf bash}, you can
+set this with the following command:
+
+\footnotesize
+\begin{verbatim}
+ulimit -l unlimited
+\end{verbatim}
+\normalsize
+
+\section{Edit Codes for DVD Directives}
+\index[general]{Directives!DVD Edit Codes}
+\index[general]{Edit Codes for DVD Directives }
+
+Before submitting the {\bf Mount Command}, {\bf Unmount Command},
+{\bf Write Part Command}, or {\bf Free Space Command} directives
+to the operating system, Bacula performs character substitution of the
+following characters:
+
+\footnotesize
+\begin{verbatim}
+ %% = %
+ %a = Archive device name
+ %e = erase (set if cannot mount and first part)
+ %n = part number
+ %m = mount point
+ %v = last part name (i.e. filename)
+\end{verbatim}
+\normalsize
+
+
+
+\section{DVD Specific Director Directives}
+\index[general]{Directives!DVD}
+\index[general]{DVD Specific Director Directives }
+
+The following directives are added to the Director's Job resource.
+
+\label{WritePartAfterJob}
+\begin{description}
+\item [Write Part After Job = \lt{}yes|no\gt{}]
+ \index[general]{Write Part After Job }
+ If this directive is set to {\bf yes} (default {\bf no}), the
+ Volume written to a temporary spool file for the current Job will
+ be written to the DVD as a new part file
+ will be created after the job is finished.
+
+ It should be set to {\bf yes} when writing to devices that require a mount
+ (for example DVD), so you are sure that the current part, containing
+ this job's data, is written to the device, and that no data is left in
+ the temporary file on the hard disk. However, on some media, like DVD+R
+ and DVD-R, a lot of space (about 10Mb) is lost everytime a part is
+ written. So, if you run several jobs each after another, you could set
+ this directive to {\bf no} for all jobs, except the last one, to avoid
+ wasting too much space, but to ensure that the data is written to the
+ medium when all jobs are finished.
+
+ This directive is ignored for devices other than DVDs.
+\end{description}
+
+
+
+\label{DVDpoints}
+\section{Other Points}
+\index[general]{Points!Other }
+\index[general]{Other Points }
+
+\begin{itemize}
+\item Please be sure that you have any automatic DVD mounting
+ disabled before running Bacula -- this includes auto mounting
+ in /etc/fstab, hotplug, ... If the DVD is automatically
+ mounted by the OS, it will cause problems when Bacula tries
+ to mount/unmount the DVD.
+\item Please be sure that you the directive {\bf Write Part After Job}
+ set to {\bf yes}, otherwise the last part of the data to be
+ written will be left in the DVD spool file and not written to
+ the DVD. The DVD will then be unreadable until this last part
+ is written. If you have a series of jobs that are run one at
+ a time, you can turn this off until the last job is run.
+\item The current code is not designed to have multiple simultaneous
+ jobs writing to the DVD. As a consequence, please ensure that
+ only one DVD backup job runs at any time.
+\item Writing and reading of DVD+RW seems to work quite reliably
+ provided you are using the patched dvd+rw-mediainfo programs.
+ On the other hand, we do not have enough information to ensure
+ that DVD-RW or other forms of DVDs work correctly.
+\item DVD+RW supports only about 1000 overwrites. Every time you
+ mount the filesystem read/write will count as one write. This can
+ add up quickly, so it is best to mount your DVD+RW filesystem read-only.
+ Bacula does not need the DVD to be mounted read-write, since it uses
+ the raw device for writing.
+\item Reformatting DVD+RW 10-20 times can apparently make the medium
+ unusable. Normally you should not have to format or reformat
+ DVD+RW media. If it is necessary, current versions of growisofs will
+ do so automatically.
+\item We have had several problems writing to DVD-RWs (this does NOT
+ concern DVD+RW), because these media have two writing-modes: {\bf
+ Incremental Sequential} and {\bf Restricted Overwrite}. Depending on
+ your device and the media you use, one of these modes may not work
+ correctly (e.g. {\bf Incremental Sequential} does not work with my NEC
+ DVD-writer and Verbatim DVD-RW).
+
+ To retrieve the current mode of a DVD-RW, run:
+\begin{verbatim}
+ dvd+rw-mediainfo /dev/xxx
+\end{verbatim}
+ where you replace xxx with your DVD device name.
+
+ {\bf Mounted Media} line should give you the information.
+
+ To set the device to {\bf Restricted Overwrite} mode, run:
+\begin{verbatim}
+ dvd+rw-format /dev/xxx
+\end{verbatim}
+ If you want to set it back to the default {\bf Incremental Sequential} mode, run:
+\begin{verbatim}
+ dvd+rw-format -blank /dev/xxx
+\end{verbatim}
+
+\item Bacula only accepts to write to blank DVDs. To quickly blank a DVD+/-RW, run
+ this command:
+\begin{verbatim}
+ dd if=/dev/zero bs=1024 count=512 | growisofs -Z /dev/xxx=/dev/fd/0
+\end{verbatim}
+ Then, try to mount the device, if it cannot be mounted, it will be considered
+ as blank by Bacula, if it can be mounted, try a full blank (see below).
+
+\item If you wish to blank completely a DVD+/-RW, use the following:
+\begin{verbatim}
+ growisofs -Z /dev/xxx=/dev/zero
+\end{verbatim}
+ where you replace xxx with your DVD device name. However, note that this
+ blanks the whole DVD, which takes quite a long time (16 minutes on mine).
+\item DVD+RW and DVD-RW support only about 1000 overwrites (i.e. don't use the
+same medium for years if you don't want to have problems...).
+
+To write to the DVD the first time use:
+\begin{verbatim}
+ growisofs -Z /dev/xxx filename
+\end{verbatim}
+
+To add additional files (more parts use):
+
+\begin{verbatim}
+ growisofs -M /dev/xxx filename
+\end{verbatim}
+
+The option {\bf -use-the-force-luke=4gms} was added in growisofs 5.20 to
+override growisofs' behavior of always checking for the 4GB limit.
+Normally, this option is recommended for all Linux 2.6.8 kernels or
+greater, since these newer kernels can handle writing more than 4GB.
+See below for more details on this subject.
+
+\item For more information about DVD writing, please look at the
+\elink{dvd+rw-tools homepage}{http://fy.chalmers.se/~appro/linux/DVD+RW/}.
+
+\item According to bug \#912, bscan cannot read multi-volume DVDs. This is
+on our TODO list, but unless someone submits a patch it is not likely to be
+done any time in the near future. (9 Sept 2007).
+
+\end{itemize}
--- /dev/null
+% TODO: maybe get rid of centering
+
+\chapter{GNU Free Documentation License}
+\index[general]{GNU Free Documentation License}
+\index[general]{License!GNU Free Documentation}
+
+\label{label_fdl}
+
+ \begin{center}
+
+ Version 1.2, November 2002
+
+
+ Copyright \copyright 2000,2001,2002 Free Software Foundation, Inc.
+
+ \bigskip
+
+ 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+ \bigskip
+
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+\end{center}
+
+
+\begin{center}
+{\bf\large Preamble}
+\end{center}
+
+The purpose of this License is to make a manual, textbook, or other
+functional and useful document "free" in the sense of freedom: to
+assure everyone the effective freedom to copy and redistribute it,
+with or without modifying it, either commercially or noncommercially.
+Secondarily, this License preserves for the author and publisher a way
+to get credit for their work, while not being considered responsible
+for modifications made by others.
+
+This License is a kind of "copyleft", which means that derivative
+works of the document must themselves be free in the same sense. It
+complements the GNU General Public License, which is a copyleft
+license designed for free software.
+
+We have designed this License in order to use it for manuals for free
+software, because free software needs free documentation: a free
+program should come with manuals providing the same freedoms that the
+software does. But this License is not limited to software manuals;
+it can be used for any textual work, regardless of subject matter or
+whether it is published as a printed book. We recommend this License
+principally for works whose purpose is instruction or reference.
+
+
+\begin{center}
+{\Large\bf 1. APPLICABILITY AND DEFINITIONS}
+\end{center}
+
+This License applies to any manual or other work, in any medium, that
+contains a notice placed by the copyright holder saying it can be
+distributed under the terms of this License. Such a notice grants a
+world-wide, royalty-free license, unlimited in duration, to use that
+work under the conditions stated herein. The \textbf{"Document"}, below,
+refers to any such manual or work. Any member of the public is a
+licensee, and is addressed as \textbf{"you"}. You accept the license if you
+copy, modify or distribute the work in a way requiring permission
+under copyright law.
+
+A \textbf{"Modified Version"} of the Document means any work containing the
+Document or a portion of it, either copied verbatim, or with
+modifications and/or translated into another language.
+
+A \textbf{"Secondary Section"} is a named appendix or a front-matter section of
+the Document that deals exclusively with the relationship of the
+publishers or authors of the Document to the Document's overall subject
+(or to related matters) and contains nothing that could fall directly
+within that overall subject. (Thus, if the Document is in part a
+textbook of mathematics, a Secondary Section may not explain any
+mathematics.) The relationship could be a matter of historical
+connection with the subject or with related matters, or of legal,
+commercial, philosophical, ethical or political position regarding
+them.
+
+The \textbf{"Invariant Sections"} are certain Secondary Sections whose titles
+are designated, as being those of Invariant Sections, in the notice
+that says that the Document is released under this License. If a
+section does not fit the above definition of Secondary then it is not
+allowed to be designated as Invariant. The Document may contain zero
+Invariant Sections. If the Document does not identify any Invariant
+Sections then there are none.
+
+The \textbf{"Cover Texts"} are certain short passages of text that are listed,
+as Front-Cover Texts or Back-Cover Texts, in the notice that says that
+the Document is released under this License. A Front-Cover Text may
+be at most 5 words, and a Back-Cover Text may be at most 25 words.
+
+A \textbf{"Transparent"} copy of the Document means a machine-readable copy,
+represented in a format whose specification is available to the
+general public, that is suitable for revising the document
+straightforwardly with generic text editors or (for images composed of
+pixels) generic paint programs or (for drawings) some widely available
+drawing editor, and that is suitable for input to text formatters or
+for automatic translation to a variety of formats suitable for input
+to text formatters. A copy made in an otherwise Transparent file
+format whose markup, or absence of markup, has been arranged to thwart
+or discourage subsequent modification by readers is not Transparent.
+An image format is not Transparent if used for any substantial amount
+of text. A copy that is not "Transparent" is called \textbf{"Opaque"}.
+
+Examples of suitable formats for Transparent copies include plain
+ASCII without markup, Texinfo input format, LaTeX input format, SGML
+or XML using a publicly available DTD, and standard-conforming simple
+HTML, PostScript or PDF designed for human modification. Examples of
+transparent image formats include PNG, XCF and JPG. Opaque formats
+include proprietary formats that can be read and edited only by
+proprietary word processors, SGML or XML for which the DTD and/or
+processing tools are not generally available, and the
+machine-generated HTML, PostScript or PDF produced by some word
+processors for output purposes only.
+
+The \textbf{"Title Page"} means, for a printed book, the title page itself,
+plus such following pages as are needed to hold, legibly, the material
+this License requires to appear in the title page. For works in
+formats which do not have any title page as such, "Title Page" means
+the text near the most prominent appearance of the work's title,
+preceding the beginning of the body of the text.
+
+A section \textbf{"Entitled XYZ"} means a named subunit of the Document whose
+title either is precisely XYZ or contains XYZ in parentheses following
+text that translates XYZ in another language. (Here XYZ stands for a
+specific section name mentioned below, such as \textbf{"Acknowledgements"},
+\textbf{"Dedications"}, \textbf{"Endorsements"}, or \textbf{"History"}.)
+To \textbf{"Preserve the Title"}
+of such a section when you modify the Document means that it remains a
+section "Entitled XYZ" according to this definition.
+
+The Document may include Warranty Disclaimers next to the notice which
+states that this License applies to the Document. These Warranty
+Disclaimers are considered to be included by reference in this
+License, but only as regards disclaiming warranties: any other
+implication that these Warranty Disclaimers may have is void and has
+no effect on the meaning of this License.
+
+
+\begin{center}
+{\Large\bf 2. VERBATIM COPYING}
+\end{center}
+
+You may copy and distribute the Document in any medium, either
+commercially or noncommercially, provided that this License, the
+copyright notices, and the license notice saying this License applies
+to the Document are reproduced in all copies, and that you add no other
+conditions whatsoever to those of this License. You may not use
+technical measures to obstruct or control the reading or further
+copying of the copies you make or distribute. However, you may accept
+compensation in exchange for copies. If you distribute a large enough
+number of copies you must also follow the conditions in section 3.
+
+You may also lend copies, under the same conditions stated above, and
+you may publicly display copies.
+
+
+\begin{center}
+{\Large\bf 3. COPYING IN QUANTITY}
+\end{center}
+
+
+If you publish printed copies (or copies in media that commonly have
+printed covers) of the Document, numbering more than 100, and the
+Document's license notice requires Cover Texts, you must enclose the
+copies in covers that carry, clearly and legibly, all these Cover
+Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on
+the back cover. Both covers must also clearly and legibly identify
+you as the publisher of these copies. The front cover must present
+the full title with all words of the title equally prominent and
+visible. You may add other material on the covers in addition.
+Copying with changes limited to the covers, as long as they preserve
+the title of the Document and satisfy these conditions, can be treated
+as verbatim copying in other respects.
+
+If the required texts for either cover are too voluminous to fit
+legibly, you should put the first ones listed (as many as fit
+reasonably) on the actual cover, and continue the rest onto adjacent
+pages.
+
+If you publish or distribute Opaque copies of the Document numbering
+more than 100, you must either include a machine-readable Transparent
+copy along with each Opaque copy, or state in or with each Opaque copy
+a computer-network location from which the general network-using
+public has access to download using public-standard network protocols
+a complete Transparent copy of the Document, free of added material.
+If you use the latter option, you must take reasonably prudent steps,
+when you begin distribution of Opaque copies in quantity, to ensure
+that this Transparent copy will remain thus accessible at the stated
+location until at least one year after the last time you distribute an
+Opaque copy (directly or through your agents or retailers) of that
+edition to the public.
+
+It is requested, but not required, that you contact the authors of the
+Document well before redistributing any large number of copies, to give
+them a chance to provide you with an updated version of the Document.
+
+
+\begin{center}
+{\Large\bf 4. MODIFICATIONS}
+\end{center}
+
+You may copy and distribute a Modified Version of the Document under
+the conditions of sections 2 and 3 above, provided that you release
+the Modified Version under precisely this License, with the Modified
+Version filling the role of the Document, thus licensing distribution
+and modification of the Modified Version to whoever possesses a copy
+of it. In addition, you must do these things in the Modified Version:
+
+\begin{itemize}
+\item[A.]
+ Use in the Title Page (and on the covers, if any) a title distinct
+ from that of the Document, and from those of previous versions
+ (which should, if there were any, be listed in the History section
+ of the Document). You may use the same title as a previous version
+ if the original publisher of that version gives permission.
+
+\item[B.]
+ List on the Title Page, as authors, one or more persons or entities
+ responsible for authorship of the modifications in the Modified
+ Version, together with at least five of the principal authors of the
+ Document (all of its principal authors, if it has fewer than five),
+ unless they release you from this requirement.
+
+\item[C.]
+ State on the Title page the name of the publisher of the
+ Modified Version, as the publisher.
+
+\item[D.]
+ Preserve all the copyright notices of the Document.
+
+\item[E.]
+ Add an appropriate copyright notice for your modifications
+ adjacent to the other copyright notices.
+
+\item[F.]
+ Include, immediately after the copyright notices, a license notice
+ giving the public permission to use the Modified Version under the
+ terms of this License, in the form shown in the Addendum below.
+
+\item[G.]
+ Preserve in that license notice the full lists of Invariant Sections
+ and required Cover Texts given in the Document's license notice.
+
+\item[H.]
+ Include an unaltered copy of this License.
+
+\item[I.]
+ Preserve the section Entitled "History", Preserve its Title, and add
+ to it an item stating at least the title, year, new authors, and
+ publisher of the Modified Version as given on the Title Page. If
+ there is no section Entitled "History" in the Document, create one
+ stating the title, year, authors, and publisher of the Document as
+ given on its Title Page, then add an item describing the Modified
+ Version as stated in the previous sentence.
+
+\item[J.]
+ Preserve the network location, if any, given in the Document for
+ public access to a Transparent copy of the Document, and likewise
+ the network locations given in the Document for previous versions
+ it was based on. These may be placed in the "History" section.
+ You may omit a network location for a work that was published at
+ least four years before the Document itself, or if the original
+ publisher of the version it refers to gives permission.
+
+\item[K.]
+ For any section Entitled "Acknowledgements" or "Dedications",
+ Preserve the Title of the section, and preserve in the section all
+ the substance and tone of each of the contributor acknowledgements
+ and/or dedications given therein.
+
+\item[L.]
+ Preserve all the Invariant Sections of the Document,
+ unaltered in their text and in their titles. Section numbers
+ or the equivalent are not considered part of the section titles.
+
+\item[M.]
+ Delete any section Entitled "Endorsements". Such a section
+ may not be included in the Modified Version.
+
+\item[N.]
+ Do not retitle any existing section to be Entitled "Endorsements"
+ or to conflict in title with any Invariant Section.
+
+\item[O.]
+ Preserve any Warranty Disclaimers.
+\end{itemize}
+
+If the Modified Version includes new front-matter sections or
+appendices that qualify as Secondary Sections and contain no material
+copied from the Document, you may at your option designate some or all
+of these sections as invariant. To do this, add their titles to the
+list of Invariant Sections in the Modified Version's license notice.
+These titles must be distinct from any other section titles.
+
+You may add a section Entitled "Endorsements", provided it contains
+nothing but endorsements of your Modified Version by various
+parties--for example, statements of peer review or that the text has
+been approved by an organization as the authoritative definition of a
+standard.
+
+You may add a passage of up to five words as a Front-Cover Text, and a
+passage of up to 25 words as a Back-Cover Text, to the end of the list
+of Cover Texts in the Modified Version. Only one passage of
+Front-Cover Text and one of Back-Cover Text may be added by (or
+through arrangements made by) any one entity. If the Document already
+includes a cover text for the same cover, previously added by you or
+by arrangement made by the same entity you are acting on behalf of,
+you may not add another; but you may replace the old one, on explicit
+permission from the previous publisher that added the old one.
+
+The author(s) and publisher(s) of the Document do not by this License
+give permission to use their names for publicity for or to assert or
+imply endorsement of any Modified Version.
+
+
+\begin{center}
+{\Large\bf 5. COMBINING DOCUMENTS}
+\end{center}
+
+
+You may combine the Document with other documents released under this
+License, under the terms defined in section 4 above for modified
+versions, provided that you include in the combination all of the
+Invariant Sections of all of the original documents, unmodified, and
+list them all as Invariant Sections of your combined work in its
+license notice, and that you preserve all their Warranty Disclaimers.
+
+The combined work need only contain one copy of this License, and
+multiple identical Invariant Sections may be replaced with a single
+copy. If there are multiple Invariant Sections with the same name but
+different contents, make the title of each such section unique by
+adding at the end of it, in parentheses, the name of the original
+author or publisher of that section if known, or else a unique number.
+Make the same adjustment to the section titles in the list of
+Invariant Sections in the license notice of the combined work.
+
+In the combination, you must combine any sections Entitled "History"
+in the various original documents, forming one section Entitled
+"History"; likewise combine any sections Entitled "Acknowledgements",
+and any sections Entitled "Dedications". You must delete all sections
+Entitled "Endorsements".
+
+\begin{center}
+{\Large\bf 6. COLLECTIONS OF DOCUMENTS}
+\end{center}
+
+You may make a collection consisting of the Document and other documents
+released under this License, and replace the individual copies of this
+License in the various documents with a single copy that is included in
+the collection, provided that you follow the rules of this License for
+verbatim copying of each of the documents in all other respects.
+
+You may extract a single document from such a collection, and distribute
+it individually under this License, provided you insert a copy of this
+License into the extracted document, and follow this License in all
+other respects regarding verbatim copying of that document.
+
+
+\begin{center}
+{\Large\bf 7. AGGREGATION WITH INDEPENDENT WORKS}
+\end{center}
+
+
+A compilation of the Document or its derivatives with other separate
+and independent documents or works, in or on a volume of a storage or
+distribution medium, is called an "aggregate" if the copyright
+resulting from the compilation is not used to limit the legal rights
+of the compilation's users beyond what the individual works permit.
+When the Document is included in an aggregate, this License does not
+apply to the other works in the aggregate which are not themselves
+derivative works of the Document.
+
+If the Cover Text requirement of section 3 is applicable to these
+copies of the Document, then if the Document is less than one half of
+the entire aggregate, the Document's Cover Texts may be placed on
+covers that bracket the Document within the aggregate, or the
+electronic equivalent of covers if the Document is in electronic form.
+Otherwise they must appear on printed covers that bracket the whole
+aggregate.
+
+
+\begin{center}
+{\Large\bf 8. TRANSLATION}
+\end{center}
+
+
+Translation is considered a kind of modification, so you may
+distribute translations of the Document under the terms of section 4.
+Replacing Invariant Sections with translations requires special
+permission from their copyright holders, but you may include
+translations of some or all Invariant Sections in addition to the
+original versions of these Invariant Sections. You may include a
+translation of this License, and all the license notices in the
+Document, and any Warranty Disclaimers, provided that you also include
+the original English version of this License and the original versions
+of those notices and disclaimers. In case of a disagreement between
+the translation and the original version of this License or a notice
+or disclaimer, the original version will prevail.
+
+If a section in the Document is Entitled "Acknowledgements",
+"Dedications", or "History", the requirement (section 4) to Preserve
+its Title (section 1) will typically require changing the actual
+title.
+
+
+\begin{center}
+{\Large\bf 9. TERMINATION}
+\end{center}
+
+
+You may not copy, modify, sublicense, or distribute the Document except
+as expressly provided for under this License. Any other attempt to
+copy, modify, sublicense or distribute the Document is void, and will
+automatically terminate your rights under this License. However,
+parties who have received copies, or rights, from you under this
+License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+
+\begin{center}
+{\Large\bf 10. FUTURE REVISIONS OF THIS LICENSE}
+\end{center}
+
+
+The Free Software Foundation may publish new, revised versions
+of the GNU Free Documentation License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns. See
+http://www.gnu.org/copyleft/.
+
+Each version of the License is given a distinguishing version number.
+If the Document specifies that a particular numbered version of this
+License "or any later version" applies to it, you have the option of
+following the terms and conditions either of that specified version or
+of any later version that has been published (not as a draft) by the
+Free Software Foundation. If the Document does not specify a version
+number of this License, you may choose any version ever published (not
+as a draft) by the Free Software Foundation.
+
+
+\begin{center}
+{\Large\bf ADDENDUM: How to use this License for your documents}
+% TODO: this is too long for table of contents
+\end{center}
+
+To use this License in a document you have written, include a copy of
+the License in the document and put the following copyright and
+license notices just after the title page:
+
+\bigskip
+\begin{quote}
+ Copyright \copyright YEAR YOUR NAME.
+ Permission is granted to copy, distribute and/or modify this document
+ under the terms of the GNU Free Documentation License, Version 1.2
+ or any later version published by the Free Software Foundation;
+ with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
+ A copy of the license is included in the section entitled "GNU
+ Free Documentation License".
+\end{quote}
+\bigskip
+
+If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
+replace the "with...Texts." line with this:
+
+\bigskip
+\begin{quote}
+ with the Invariant Sections being LIST THEIR TITLES, with the
+ Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.
+\end{quote}
+\bigskip
+
+If you have Invariant Sections without Cover Texts, or some other
+combination of the three, merge those two alternatives to suit the
+situation.
+
+If your document contains nontrivial examples of program code, we
+recommend releasing these examples in parallel under your choice of
+free software license, such as the GNU General Public License,
+to permit their use in free software.
+
+%---------------------------------------------------------------------
--- /dev/null
+%%
+%%
+
+\section*{GNU General Public License}
+\label{GplChapter}
+\index[general]{GNU General Public License }
+\index[general]{License!GNU General Public }
+
+\elink{image of a Philosophical
+GNU}{http://www.gnu.org/graphics/philosophicalgnu.html}
+
+\begin{itemize}
+\item
+ \elink{What to do if you see a possible GPL
+ violation}{http://www.gnu.org/copyleft/gpl-violation.html}
+\item
+ \elink{Translations of the
+ GPL}{http://www.gnu.org/copyleft/copyleft.html\#translations}
+\end{itemize}
+
+
+\section{Table of Contents}
+\index[general]{Table of Contents }
+\index[general]{Contents!Table of }
+
+\begin{itemize}
+\item
+ \label{TOC1}
+ \ilink{GNU GENERAL PUBLIC LICENSE}{SEC1}
+
+\begin{itemize}
+\item
+ \label{TOC2}
+ \ilink{Preamble}{SEC2}
+\item
+ \label{TOC3}
+ \ilink{TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND
+MODIFICATION}{SEC3}
+\item
+ \label{TOC4}
+ \ilink{How to Apply These Terms to Your New Programs}{SEC4}
+\end{itemize}
+
+\end{itemize}
+
+
+\section{GNU GENERAL PUBLIC LICENSE}
+\label{SEC1}
+\index[general]{GNU GENERAL PUBLIC LICENSE }
+\index[general]{LICENSE!GNU GENERAL PUBLIC }
+
+Version 2, June 1991
+
+\footnotesize
+\begin{verbatim}
+Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+\end{verbatim}
+\normalsize
+
+\section{Preamble}
+\label{SEC2}
+\index[general]{Preamble }
+
+The licenses for most software are designed to take away your freedom to share
+and change it. By contrast, the GNU General Public License is intended to
+guarantee your freedom to share and change free software\verb:--:to make sure the
+software is free for all its users. This General Public License applies to
+most of the Free Software Foundation's software and to any other program whose
+authors commit to using it. (Some other Free Software Foundation software is
+covered by the GNU Library General Public License instead.) You can apply it
+to your programs, too.
+
+When we speak of free software, we are referring to freedom, not price. Our
+General Public Licenses are designed to make sure that you have the freedom to
+distribute copies of free software (and charge for this service if you wish),
+that you receive source code or can get it if you want it, that you can change
+the software or use pieces of it in new free programs; and that you know you
+can do these things.
+
+To protect your rights, we need to make restrictions that forbid anyone to
+deny you these rights or to ask you to surrender the rights. These
+restrictions translate to certain responsibilities for you if you distribute
+copies of the software, or if you modify it.
+
+For example, if you distribute copies of such a program, whether gratis or for
+a fee, you must give the recipients all the rights that you have. You must
+make sure that they, too, receive or can get the source code. And you must
+show them these terms so they know their rights.
+
+We protect your rights with two steps: (1) copyright the software, and (2)
+offer you this license which gives you legal permission to copy, distribute
+and/or modify the software.
+
+Also, for each author's protection and ours, we want to make certain that
+everyone understands that there is no warranty for this free software. If the
+software is modified by someone else and passed on, we want its recipients to
+know that what they have is not the original, so that any problems introduced
+by others will not reflect on the original authors' reputations.
+
+Finally, any free program is threatened constantly by software patents. We
+wish to avoid the danger that redistributors of a free program will
+individually obtain patent licenses, in effect making the program proprietary.
+To prevent this, we have made it clear that any patent must be licensed for
+everyone's free use or not licensed at all.
+
+The precise terms and conditions for copying, distribution and modification
+follow.
+
+\section{TERMS AND CONDITIONS}
+\label{SEC3}
+\index[general]{CONDITIONS!TERMS AND }
+\index[general]{TERMS AND CONDITIONS }
+
+TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+{\bf 0.} This License applies to any program or other work which contains a
+notice placed by the copyright holder saying it may be distributed under the
+terms of this General Public License. The "Program", below, refers to any
+such program or work, and a "work based on the Program" means either the
+Program or any derivative work under copyright law: that is to say, a work
+containing the Program or a portion of it, either verbatim or with
+modifications and/or translated into another language. (Hereinafter,
+translation is included without limitation in the term "modification".) Each
+licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not covered
+by this License; they are outside its scope. The act of running the Program is
+not restricted, and the output from the Program is covered only if its
+contents constitute a work based on the Program (independent of having been
+made by running the Program). Whether that is true depends on what the Program
+does.
+
+{\bf 1.} You may copy and distribute verbatim copies of the Program's source
+code as you receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice and
+disclaimer of warranty; keep intact all the notices that refer to this License
+and to the absence of any warranty; and give any other recipients of the
+Program a copy of this License along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and you may
+at your option offer warranty protection in exchange for a fee.
+
+{\bf 2.} You may modify your copy or copies of the Program or any portion of
+it, thus forming a work based on the Program, and copy and distribute such
+modifications or work under the terms of Section 1 above, provided that you
+also meet all of these conditions:
+
+\begin{itemize}
+\item {\bf a)} You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+\item {\bf b)} You must cause any work that you distribute or publish, that
+ in whole or in part contains or is derived from the Program or any part
+ thereof, to be licensed as a whole at no charge to all third parties under
+ the terms of this License.
+
+\item {\bf c)} If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such interactive use in
+ the most ordinary way, to print or display an announcement including an
+ appropriate copyright notice and a notice that there is no warranty (or else,
+ saying that you provide a warranty) and that users may redistribute the
+ program under these conditions, and telling the user how to view a copy of
+ this License. (Exception: if the Program itself is interactive but does not
+ normally print such an announcement, your work based on the Program is not
+ required to print an announcement.)
+\end{itemize}
+
+These requirements apply to the modified work as a whole. If identifiable
+sections of that work are not derived from the Program, and can be reasonably
+considered independent and separate works in themselves, then this License,
+and its terms, do not apply to those sections when you distribute them as
+separate works. But when you distribute the same sections as part of a whole
+which is a work based on the Program, the distribution of the whole must be on
+the terms of this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest your
+rights to work written entirely by you; rather, the intent is to exercise the
+right to control the distribution of derivative or collective works based on
+the Program.
+
+In addition, mere aggregation of another work not based on the Program with
+the Program (or with a work based on the Program) on a volume of a storage or
+distribution medium does not bring the other work under the scope of this
+License.
+
+{\bf 3.} You may copy and distribute the Program (or a work based on it, under
+Section 2) in object code or executable form under the terms of Sections 1 and
+2 above provided that you also do one of the following:
+
+\begin{itemize}
+\item {\bf a)} Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections 1 and 2
+ above on a medium customarily used for software interchange; or,
+
+\item {\bf b)} Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your cost of
+ physically performing source distribution, a complete machine-readable copy of
+ the corresponding source code, to be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+\item {\bf c)} Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is allowed only
+ for noncommercial distribution and only if you received the program in object
+ code or executable form with such an offer, in accord with Subsection b
+ above.)
+\end{itemize}
+
+The source code for a work means the preferred form of the work for making
+modifications to it. For an executable work, complete source code means all
+the source code for all modules it contains, plus any associated interface
+definition files, plus the scripts used to control compilation and
+installation of the executable. However, as a special exception, the source
+code distributed need not include anything that is normally distributed (in
+either source or binary form) with the major components (compiler, kernel, and
+so on) of the operating system on which the executable runs, unless that
+component itself accompanies the executable.
+
+If distribution of executable or object code is made by offering access to
+copy from a designated place, then offering equivalent access to copy the
+source code from the same place counts as distribution of the source code,
+even though third parties are not compelled to copy the source along with the
+object code.
+
+{\bf 4.} You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt otherwise to
+copy, modify, sublicense or distribute the Program is void, and will
+automatically terminate your rights under this License. However, parties who
+have received copies, or rights, from you under this License will not have
+their licenses terminated so long as such parties remain in full compliance.
+
+{\bf 5.} You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or distribute
+the Program or its derivative works. These actions are prohibited by law if
+you do not accept this License. Therefore, by modifying or distributing the
+Program (or any work based on the Program), you indicate your acceptance of
+this License to do so, and all its terms and conditions for copying,
+distributing or modifying the Program or works based on it.
+
+{\bf 6.} Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the original
+licensor to copy, distribute or modify the Program subject to these terms and
+conditions. You may not impose any further restrictions on the recipients'
+exercise of the rights granted herein. You are not responsible for enforcing
+compliance by third parties to this License.
+
+{\bf 7.} If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or otherwise)
+that contradict the conditions of this License, they do not excuse you from
+the conditions of this License. If you cannot distribute so as to satisfy
+simultaneously your obligations under this License and any other pertinent
+obligations, then as a consequence you may not distribute the Program at all.
+For example, if a patent license would not permit royalty-free redistribution
+of the Program by all those who receive copies directly or indirectly through
+you, then the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under any
+particular circumstance, the balance of the section is intended to apply and
+the section as a whole is intended to apply in other circumstances.
+
+It is not the purpose of this section to induce you to infringe any patents or
+other property right claims or to contest validity of any such claims; this
+section has the sole purpose of protecting the integrity of the free software
+distribution system, which is implemented by public license practices. Many
+people have made generous contributions to the wide range of software
+distributed through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing to
+distribute software through any other system and a licensee cannot impose that
+choice.
+
+This section is intended to make thoroughly clear what is believed to be a
+consequence of the rest of this License.
+
+{\bf 8.} If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the original
+copyright holder who places the Program under this License may add an explicit
+geographical distribution limitation excluding those countries, so that
+distribution is permitted only in or among countries not thus excluded. In
+such case, this License incorporates the limitation as if written in the body
+of this License.
+
+{\bf 9.} The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will be
+similar in spirit to the present version, but may differ in detail to address
+new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any later
+version", you have the option of following the terms and conditions either of
+that version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of this License,
+you may choose any version ever published by the Free Software Foundation.
+
+{\bf 10.} If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author to
+ask for permission. For software which is copyrighted by the Free Software
+Foundation, write to the Free Software Foundation; we sometimes make
+exceptions for this. Our decision will be guided by the two goals of
+preserving the free status of all derivatives of our free software and of
+promoting the sharing and reuse of software generally.
+
+{\bf NO WARRANTY}
+
+{\bf 11.} BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE
+THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR
+IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO
+THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM
+PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+CORRECTION.
+
+{\bf 12.} IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO
+LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR
+THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+END OF TERMS AND CONDITIONS
+
+\section{How to Apply These Terms to Your New Programs}
+\label{SEC4}
+\index[general]{Programs!How to Apply These Terms to Your New }
+\index[general]{How to Apply These Terms to Your New Programs }
+
+If you develop a new program, and you want it to be of the greatest possible
+use to the public, the best way to achieve this is to make it free software
+which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach
+them to the start of each source file to most effectively convey the exclusion
+of warranty; and each file should have at least the "copyright" line and a
+pointer to where the full notice is found.
+
+\footnotesize
+\begin{verbatim}
+{\em one line to give the program's name and an idea of what it does.}
+Copyright (C) {\em yyyy} {\em name of author}
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+02110-1301 USA
+\end{verbatim}
+\normalsize
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this when it
+starts in an interactive mode:
+
+\footnotesize
+\begin{verbatim}
+Gnomovision version 69, Copyright (C) {\em year} {\em name of author}
+Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
+type `show w'. This is free software, and you are welcome
+to redistribute it under certain conditions; type `show c'
+for details.
+\end{verbatim}
+\normalsize
+
+The hypothetical commands {\tt `show w'} and {\tt `show c'} should show the
+appropriate parts of the General Public License. Of course, the commands you
+use may be called something other than {\tt `show w'} and {\tt `show c'}; they
+could even be mouse-clicks or menu items\verb:--:whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+\footnotesize
+\begin{verbatim}
+Yoyodyne, Inc., hereby disclaims all copyright
+interest in the program `Gnomovision'
+(which makes passes at compilers) written
+by James Hacker.
+{\em signature of Ty Coon}, 1 April 1989
+Ty Coon, President of Vice
+\end{verbatim}
+\normalsize
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General Public
+License instead of this License.
+Return to
+\elink{GNU's home page}{http://www.gnu.org/home.html}.
+
+FSF \& GNU inquiries \& questions to
+\elink{gnu@gnu.org}{mailto:gnu@gnu.org}. Other
+\elink{ways to contact}{http://www.gnu.org/home.html\#ContactInfo} the FSF.
+
+Comments on these web pages to
+\elink{webmasters@www.gnu.org}{mailto:webmasters@www.gnu.org}, send other
+questions to
+\elink{gnu@gnu.org}{mailto:gnu@gnu.org}.
+
+Copyright notice above.
+Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+Boston, MA 02110-1301 USA
+
+Updated: 3 Jan 2000 rms
--- /dev/null
+# This file serves as a place to put initialization code and constants to
+# affect the behavior of latex2html for generating the bacula manuals.
+
+# $LINKPOINT specifies what filename to use to link to when creating
+# index.html. Not that this is a hard link.
+$LINKPOINT='"$OVERALL_TITLE"';
+
+
+# The following must be the last line of this file.
+1;
--- /dev/null
+%%
+%%
+
+\section*{GNU Lesser General Public License}
+\label{LesserChapter}
+\index[general]{GNU Lesser General Public License }
+\index[general]{License!GNU Lesser General Public }
+
+\elink{image of a Philosophical GNU}
+{\url{http://www.gnu.org/graphics/philosophicalgnu.html}} [
+\elink{English}{\url{http://www.gnu.org/copyleft/lesser.html}} |
+\elink{Japanese}{\url{http://www.gnu.org/copyleft/lesser.ja.html}} ]
+
+\begin{itemize}
+\item
+ \elink{Why you shouldn't use the Lesser GPL for your next
+ library}{\url{http://www.gnu.org/philosophy/why-not-lgpl.html}}
+\item
+ \elink{What to do if you see a possible LGPL
+ violation}{\url{http://www.gnu.org/copyleft/gpl-violation.html}}
+\item
+ \elink{Translations of the LGPL}
+{\url{http://www.gnu.org/copyleft/copyleft.html\#translationsLGPL}}
+\item The GNU Lesser General Public License as a
+ \elink{text file}{\url{http://www.gnu.org/copyleft/lesser.txt}}
+\item The GNU Lesser General Public License as a
+ \elink{Texinfo}{\url{http://www.gnu.org/copyleft/lesser.texi}} file
+ \end{itemize}
+
+
+This GNU Lesser General Public License counts as the successor of the GNU
+Library General Public License. For an explanation of why this change was
+necessary, read the
+\elink{Why you shouldn't use the Lesser GPL for your next
+library}{\url{http://www.gnu.org/philosophy/why-not-lgpl.html}} article.
+
+\section{Table of Contents}
+\index[general]{Table of Contents }
+\index[general]{Contents!Table of }
+
+\begin{itemize}
+\item
+ \label{TOC12}
+ \ilink{GNU LESSER GENERAL PUBLIC LICENSE}{SEC12}
+
+\begin{itemize}
+\item
+ \label{TOC23}
+ \ilink{Preamble}{SEC23}
+\item
+ \label{TOC34}
+ \ilink{TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND
+MODIFICATION}{SEC34}
+\item
+ \label{TOC45}
+ \ilink{How to Apply These Terms to Your New Libraries}{SEC45}
+\end{itemize}
+
+\end{itemize}
+
+
+\section{GNU LESSER GENERAL PUBLIC LICENSE}
+\label{SEC12}
+\index[general]{LICENSE!GNU LESSER GENERAL PUBLIC }
+\index[general]{GNU LESSER GENERAL PUBLIC LICENSE }
+
+Version 2.1, February 1999
+
+\footnotesize
+\begin{verbatim}
+Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+[This is the first released version of the Lesser GPL. It also counts
+ as the successor of the GNU Library Public License, version 2, hence
+ the version number 2.1.]
+\end{verbatim}
+\normalsize
+
+\section{Preamble}
+\label{SEC23}
+\index[general]{Preamble }
+
+The licenses for most software are designed to take away your freedom to share
+and change it. By contrast, the GNU General Public Licenses are intended to
+guarantee your freedom to share and change free software\verb:--:to make sure the
+software is free for all its users.
+
+This license, the Lesser General Public License, applies to some specially
+designated software packages\verb:--:typically libraries\verb:--:of the Free Software
+Foundation and other authors who decide to use it. You can use it too, but we
+suggest you first think carefully about whether this license or the ordinary
+General Public License is the better strategy to use in any particular case,
+based on the explanations below.
+
+When we speak of free software, we are referring to freedom of use, not price.
+Our General Public Licenses are designed to make sure that you have the
+freedom to distribute copies of free software (and charge for this service if
+you wish); that you receive source code or can get it if you want it; that you
+can change the software and use pieces of it in new free programs; and that
+you are informed that you can do these things.
+
+To protect your rights, we need to make restrictions that forbid distributors
+to deny you these rights or to ask you to surrender these rights. These
+restrictions translate to certain responsibilities for you if you distribute
+copies of the library or if you modify it.
+
+For example, if you distribute copies of the library, whether gratis or for a
+fee, you must give the recipients all the rights that we gave you. You must
+make sure that they, too, receive or can get the source code. If you link
+other code with the library, you must provide complete object files to the
+recipients, so that they can relink them with the library after making changes
+to the library and recompiling it. And you must show them these terms so they
+know their rights.
+
+We protect your rights with a two-step method: (1) we copyright the library,
+and (2) we offer you this license, which gives you legal permission to copy,
+distribute and/or modify the library.
+
+To protect each distributor, we want to make it very clear that there is no
+warranty for the free library. Also, if the library is modified by someone
+else and passed on, the recipients should know that what they have is not the
+original version, so that the original author's reputation will not be
+affected by problems that might be introduced by others.
+
+Finally, software patents pose a constant threat to the existence of any free
+program. We wish to make sure that a company cannot effectively restrict the
+users of a free program by obtaining a restrictive license from a patent
+holder. Therefore, we insist that any patent license obtained for a version of
+the library must be consistent with the full freedom of use specified in this
+license.
+
+Most GNU software, including some libraries, is covered by the ordinary GNU
+General Public License. This license, the GNU Lesser General Public License,
+applies to certain designated libraries, and is quite different from the
+ordinary General Public License. We use this license for certain libraries in
+order to permit linking those libraries into non-free programs.
+
+When a program is linked with a library, whether statically or using a shared
+library, the combination of the two is legally speaking a combined work, a
+derivative of the original library. The ordinary General Public License
+therefore permits such linking only if the entire combination fits its
+criteria of freedom. The Lesser General Public License permits more lax
+criteria for linking other code with the library.
+
+We call this license the "Lesser" General Public License because it does
+Less to protect the user's freedom than the ordinary General Public License.
+It also provides other free software developers Less of an advantage over
+competing non-free programs. These disadvantages are the reason we use the
+ordinary General Public License for many libraries. However, the Lesser
+license provides advantages in certain special circumstances.
+
+For example, on rare occasions, there may be a special need to encourage the
+widest possible use of a certain library, so that it becomes a de-facto
+standard. To achieve this, non-free programs must be allowed to use the
+library. A more frequent case is that a free library does the same job as
+widely used non-free libraries. In this case, there is little to gain by
+limiting the free library to free software only, so we use the Lesser General
+Public License.
+
+In other cases, permission to use a particular library in non-free programs
+enables a greater number of people to use a large body of free software. For
+example, permission to use the GNU C Library in non-free programs enables many
+more people to use the whole GNU operating system, as well as its variant, the
+GNU/Linux operating system.
+
+Although the Lesser General Public License is Less protective of the users'
+freedom, it does ensure that the user of a program that is linked with the
+Library has the freedom and the wherewithal to run that program using a
+modified version of the Library.
+
+The precise terms and conditions for copying, distribution and modification
+follow. Pay close attention to the difference between a "work based on the
+library" and a "work that uses the library". The former contains code
+derived from the library, whereas the latter must be combined with the library
+in order to run.
+
+\section{TERMS AND CONDITIONS}
+\label{SEC34}
+\index[general]{CONDITIONS!TERMS AND }
+\index[general]{TERMS AND CONDITIONS }
+
+TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+{\bf 0.} This License Agreement applies to any software library or other
+program which contains a notice placed by the copyright holder or other
+authorized party saying it may be distributed under the terms of this Lesser
+General Public License (also called "this License"). Each licensee is
+addressed as "you".
+
+A "library" means a collection of software functions and/or data prepared so
+as to be conveniently linked with application programs (which use some of
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+
+The "Library", below, refers to any such software library or work which has
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+
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+
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+
+{\bf 1.} You may copy and distribute verbatim copies of the Library's complete
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+
+\begin{itemize}
+\item {\bf a)} The modified work must itself be a software library.
+\item {\bf b)} You must cause the files modified to carry prominent notices
+ stating that you changed the files and the date of any change.
+\item {\bf c)} You must cause the whole of the work to be licensed at no
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+(For example, a function in a library to compute square roots has a purpose
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+\end{itemize}
+
+{\bf 3.} You may opt to apply the terms of the ordinary GNU General Public
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+that contradict the conditions of this License, they do not excuse you from
+the conditions of this License. If you cannot distribute so as to satisfy
+simultaneously your obligations under this License and any other pertinent
+obligations, then as a consequence you may not distribute the Library at all.
+For example, if a patent license would not permit royalty-free redistribution
+of the Library by all those who receive copies directly or indirectly through
+you, then the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Library.
+
+If any portion of this section is held invalid or unenforceable under any
+particular circumstance, the balance of the section is intended to apply, and
+the section as a whole is intended to apply in other circumstances.
+
+It is not the purpose of this section to induce you to infringe any patents or
+other property right claims or to contest validity of any such claims; this
+section has the sole purpose of protecting the integrity of the free software
+distribution system which is implemented by public license practices. Many
+people have made generous contributions to the wide range of software
+distributed through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing to
+distribute software through any other system and a licensee cannot impose that
+choice.
+
+This section is intended to make thoroughly clear what is believed to be a
+consequence of the rest of this License.
+
+{\bf 12.} If the distribution and/or use of the Library is restricted in
+certain countries either by patents or by copyrighted interfaces, the original
+copyright holder who places the Library under this License may add an explicit
+geographical distribution limitation excluding those countries, so that
+distribution is permitted only in or among countries not thus excluded. In
+such case, this License incorporates the limitation as if written in the body
+of this License.
+
+{\bf 13.} The Free Software Foundation may publish revised and/or new versions
+of the Lesser General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Library
+specifies a version number of this License which applies to it and "any later
+version", you have the option of following the terms and conditions either of
+that version or of any later version published by the Free Software
+Foundation. If the Library does not specify a license version number, you may
+choose any version ever published by the Free Software Foundation.
+
+{\bf 14.} If you wish to incorporate parts of the Library into other free
+programs whose distribution conditions are incompatible with these, write to
+the author to ask for permission. For software which is copyrighted by the
+Free Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals of
+preserving the free status of all derivatives of our free software and of
+promoting the sharing and reuse of software generally.
+
+{\bf NO WARRANTY}
+
+{\bf 15.} BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE
+THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR
+IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO
+THE QUALITY AND PERFORMANCE OF THE LIBRARY IS WITH YOU. SHOULD THE LIBRARY
+PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+CORRECTION.
+
+{\bf 16.} IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE LIBRARY (INCLUDING BUT NOT LIMITED TO
+LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR
+THIRD PARTIES OR A FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+END OF TERMS AND CONDITIONS
+
+\section{How to Apply These Terms to Your New Libraries}
+\label{SEC45}
+\index[general]{Libraries!How to Apply These Terms to Your New }
+\index[general]{How to Apply These Terms to Your New Libraries }
+
+
+If you develop a new library, and you want it to be of the greatest possible
+use to the public, we recommend making it free software that everyone can
+redistribute and change. You can do so by permitting redistribution under
+these terms (or, alternatively, under the terms of the ordinary General Public
+License).
+
+To apply these terms, attach the following notices to the library. It is
+safest to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+\footnotesize
+\begin{verbatim}
+{\it one line to give the library's name and an idea of what it does.}
+Copyright (C) {\it year} {\it name of author}
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Lesser General Public License for more details.
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+\end{verbatim}
+\normalsize
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the library, if
+necessary. Here is a sample; alter the names:
+
+\footnotesize
+\begin{verbatim}
+Yoyodyne, Inc., hereby disclaims all copyright interest in
+the library "Frob" (a library for tweaking knobs) written
+by James Random Hacker.
+{\it signature of Ty Coon}, 1 April 1990
+Ty Coon, President of Vice
+\end{verbatim}
+\normalsize
+
+That's all there is to it!
+Return to
+\elink{GNU's home page}{\url{http://www.gnu.org/home.html}}.
+
+FSF \& GNU inquiries \& questions to
+\elink{gnu@gnu.org}{mailto:gnu@gnu.org}. Other
+\elink{ways to contact}{\url{http://www.gnu.org/home.html\#ContactInfo}} the FSF.
+
+Comments on these web pages to
+\elink{webmasters@www.gnu.org}{mailto:webmasters@www.gnu.org}, send other
+questions to
+\elink{gnu@gnu.org}{mailto:gnu@gnu.org}.
+
+Copyright notice above.
+Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+Boston, MA 02110-1301 USA
+USA
+
+Updated: 27 Nov 2000 paulv
--- /dev/null
+%%
+%%
+
+\chapter{Bacula Copyright, Trademark, and Licenses}
+\label{LicenseChapter}
+\index[general]{Licenses!Bacula Copyright Trademark}
+\index[general]{Bacula Copyright, Trademark, and Licenses}
+
+There are a number of different licenses that are used in Bacula.
+If you have a printed copy of this manual, the details of each of
+the licenses referred to in this chapter can be found in the
+online version of the manual at
+\elink{http://www.bacula.org}{\url{http://www.bacula.org}}.
+
+\section{FDL}
+\index[general]{FDL }
+
+The GNU Free Documentation License (FDL) is used for this manual,
+which is a free and open license. This means that you may freely
+reproduce it and even make changes to it. However, rather than
+distribute your own version of this manual, we would much prefer
+if you would send any corrections or changes to the Bacula project.
+
+The most recent version of the manual can always be found online
+at \elink{http://www.bacula.org}{\url{http://www.bacula.org}}.
+
+\section{GPL}
+\index[general]{GPL }
+
+The vast bulk of the source code is released under the
+\ilink{GNU General Public License version 2.}{GplChapter}.
+
+Most of this code is copyrighted: Copyright \copyright 2000-2009
+Free Software Foundation Europe e.V.
+
+Portions may be copyrighted by other people. These files are released
+under different licenses which are compatible with the Bacula GPLv2 license.
+
+\section{LGPL}
+\index[general]{LGPL }
+
+Some of the Bacula library source code is released under the
+\ilink{GNU Lesser General Public License.}{LesserChapter} This
+permits third parties to use these parts of our code in their proprietary
+programs to interface to Bacula.
+
+\section{Public Domain}
+\index[general]{Domain!Public }
+\index[general]{Public Domain }
+
+Some of the Bacula code, or code that Bacula references, has been released
+to the public domain. E.g. md5.c, SQLite.
+
+\section{Trademark}
+\index[general]{Trademark }
+
+Bacula\raisebox{.6ex}{\textsuperscript{\textregistered}} is a registered
+trademark of Kern Sibbald.
+
+We have trademarked the Bacula name to ensure that any program using the
+name Bacula will be exactly compatible with the program that we have
+released. The use of the name Bacula is restricted to software systems
+that agree exactly with the program presented here. If you have made
+modifications to the Bacula source code that alter in any significant
+way the way the program functions, you may not distribute it using the
+Bacula name.
+
+\section{Fiduciary License Agreement}
+\index[general]{Fiduciary License Agreement }
+Developers who have contributed significant changes to the Bacula code
+should have signed a Fiduciary License Agreement (FLA), which
+guarantees them the right to use the code they have developed, and also
+ensures that the Free Software Foundation Europe (and thus the Bacula
+project) has the rights to the code. This Fiduciary License Agreement
+is found on the Bacula web site at:
+
+\elink{http://www.bacula.org/en/FLA-bacula.en.pdf}{\url{http://www.bacula.org/en/FLA-bacula.en.pdf}}
+
+and if you are submitting code, you should fill it out then sent to:
+
+\begin{quote}
+ Kern Sibbald \\
+ Cotes-de-Montmoiret 9 \\
+ 1012 Lausanne \\
+ Switzerland \\
+\end{quote}
+
+When you send in such a
+complete document, please notify me: kern at sibbald dot com.
+
+
+\section{Disclaimer}
+\index[general]{Disclaimer }
+
+NO WARRANTY
+
+BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE
+PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
+STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE
+PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
+PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE,
+YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY
+COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE
+PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE
+OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR
+DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR
+A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH
+HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
--- /dev/null
+[General]
+img_extIsRegExp=false
+img_extensions=.eps .jpg .jpeg .png .pdf .ps .fig .gif
+kileprversion=2
+kileversion=2.0
+lastDocument=stunnel.tex
+masterDocument=misc.tex
+name=Misc
+pkg_extIsRegExp=false
+pkg_extensions=.cls .sty
+src_extIsRegExp=false
+src_extensions=.tex .ltx .latex .dtx .ins
+
+[Tools]
+MakeIndex=
+QuickBuild=
+
+[item:coverpage.tex]
+archive=true
+column=33
+encoding=UTF-8
+highlight=LaTeX
+line=0
+open=false
+order=-1
+
+[item:dvd.tex]
+archive=true
+column=0
+encoding=UTF-8
+highlight=LaTeX
+line=56
+open=false
+order=-1
+
+[item:fdl.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:gpl.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:lesser.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:license.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:misc.tex]
+archive=true
+column=59
+encoding=UTF-8
+highlight=LaTeX
+line=45
+open=true
+order=0
+
+[item:projects.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:python.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:stunnel.tex]
+archive=true
+column=0
+encoding=UTF-8
+highlight=LaTeX
+line=0
+open=true
+order=1
+
+[item:vars.tex]
+archive=true
+column=0
+encoding=UTF-8
+highlight=LaTeX
+line=48
+open=false
+order=-1
+
+[item:version.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
--- /dev/null
+%%
+%%
+%% The following characters must be preceded by a backslash
+%% to be entered as printable characters:
+%%
+%% # $ % & ~ _ ^ \ { }
+%%
+
+\documentclass[10pt,a4paper]{book}
+
+\topmargin -0.5in
+\oddsidemargin 0.0in
+\evensidemargin 0.0in
+\textheight 10in
+\textwidth 6.5in
+
+
+\usepackage{html}
+\usepackage{float}
+\usepackage{graphicx}
+\usepackage{bacula}
+\usepackage{longtable}
+\usepackage{makeidx}
+\usepackage{index}
+\usepackage{setspace}
+\usepackage{hyperref}
+% \usepackage[linkcolor=black,colorlinks=true]{hyperref}
+\usepackage{url}
+
+\makeindex
+\newindex{general}{idx}{ind}{General Index}
+
+\sloppy
+
+\begin{document}
+\sloppy
+
+\include{coverpage}
+
+\clearpage
+\pagenumbering{roman}
+\tableofcontents
+\clearpage
+
+\pagestyle{myheadings}
+\markboth{Bacula Version \version}{Bacula Version \version}
+\pagenumbering{arabic}
+\include{python}
+\include{vars}
+\include{stunnel}
+\include{dvd}
+\include{projects}
+\include{license}
+\include{fdl}
+\include{gpl}
+\include{lesser}
+
+
+% pull in the index
+\clearpage
+\printindex[general]
+
+\end{document}
--- /dev/null
+%%
+%%
+
+\chapter{Bacula Projects}
+\label{ProjectsChapter}
+\index[general]{Projects!Bacula }
+\index[general]{Bacula Projects }
+
+Once a new major version of Bacula is released, the Bacula
+users will vote on a list of new features. This vote is used
+as the main element determining what new features will be
+implemented for the next version. Generally, the development time
+for a new release is between four to nine months. Sometimes it may be
+a bit longer, but in that case, there will be a number of bug fix
+updates to the currently released version.
+
+For the current list of project, please see the projects page in the CVS
+at: \elink{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/projects}
+{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/projects}
+see the {\bf projects} file in the main source directory. The projects
+file is updated approximately once every six months.
+
+Separately from the project list, Kern maintains a current list of
+tasks as well as ideas, feature requests, and occasionally design
+notes. This list is updated roughly weekly (sometimes more often).
+For a current list of tasks you can see {\bf kernstodo} in the Source Forge
+CVS at \elink{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/kernstodo}
+{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/kernstodo}.
--- /dev/null
+%%
+%%
+
+\chapter{Python Scripting}
+\label{PythonChapter}
+\index[general]{Python Scripting}
+\index[general]{Scripting!Python}
+
+You may be asking what Python is and why a scripting language is
+needed in Bacula. The answer to the first question is that Python
+is an Object Oriented scripting language with features similar
+to those found in Perl, but the syntax of the language is much
+cleaner and simpler. The answer to why have scripting in Bacula is to
+give the user more control over the whole backup process. Probably
+the simplest example is when Bacula needs a new Volume name, with
+a scripting language such as Python, you can generate any name
+you want, based on the current state of Bacula.
+
+\section{Python Configuration}
+\index[general]{Python Configuration}
+\index[general]{Configuration!Python}
+
+Python must be enabled during the configuration process by adding
+a \verb:--:with-python, and possibly specifying an alternate
+directory if your Python is not installed in a standard system
+location. If you are using RPMs you will need the python-devel package
+installed.
+
+When Python is configured, it becomes an integral part of Bacula and
+runs in Bacula's address space, so even though it is an interpreted
+language, it is very efficient.
+
+When the Director starts, it looks to see if you have a {\bf
+Scripts Directory} Directive defined (normal default {\bf
+/etc/bacula/scripts}, if so, it looks in that directory for a file named
+{\bf DirStartUp.py}. If it is found, Bacula will pass this file to Python
+for execution. The {\bf Scripts Directory} is a new directive that you add
+to the Director resource of your bacula-dir.conf file.
+
+Note: Bacula does not install Python scripts by default because these
+scripts are for you to program. This means that with a default
+installation with Python enabled, Bacula will print the following error
+message:
+
+\begin{verbatim}
+09-Jun 15:14 bacula-dir: ERROR in pythonlib.c:131 Could not import
+Python script /etc/bacula/scripts/DirStartUp. Python disabled.
+\end{verbatim}
+
+The source code directory {\bf examples/python} contains sample scripts
+for DirStartUp.py, SDStartUp.py, and FDStartUp.py that you might want
+to use as a starting point. Normally, your scripts directory (at least
+where you store the Python scripts) should be writable by Bacula, because
+Python will attempt to write a compiled version of the scripts (e.g.
+DirStartUp.pyc) back to that directory.
+
+When starting with the sample scripts, you can delete any part that
+you will not need, but you should keep all the Bacula Event and Job Event
+definitions. If you do not want a particular event, simply replace the
+existing code with a {\bf noop = 1}.
+
+\section{Bacula Events}
+\index[general]{Bacula Events}
+\index[general]{Events}
+A Bacula event is a point in the Bacula code where Bacula
+will call a subroutine (actually a method) that you have
+defined in the Python StartUp script. Events correspond
+to some significant event such as a Job Start, a Job End,
+Bacula needs a new Volume Name, ... When your script is
+called, it will have access to all the Bacula variables
+specific to the Job (attributes of the Job Object), and
+it can even call some of the Job methods (subroutines)
+or set new values in the Job attributes, such as the
+Priority. You will see below how the events are used.
+
+\section{Python Objects}
+\index[general]{Python Objects}
+\index[general]{Objects!Python}
+
+There are four Python objects that you will need to work with:
+\begin{description}
+\item [The Bacula Object]
+ The Bacula object is created by the Bacula daemon (the Director
+ in the present case) when the daemon starts. It is available to
+ the Python startup script, {\bf DirStartup.py}, by importing the
+ Bacula definitions with {\bf import bacula}. The methods
+ available with this object are described below.
+
+\item [The Bacula Events Class]
+ You create this class in the startup script, and you pass
+ it to the Bacula Object's {\bf set\_events} method. The
+ purpose of the Bacula Events Class is to define what global
+ or daemon events you want to monitor. When one of those events
+ occurs, your Bacula Events Class will be called at the method
+ corresponding to the event. There are currently three events,
+ JobStart, JobEnd, and Exit, which are described in detail below.
+
+\item [The Job Object]
+ When a Job starts, and assuming you have defined a JobStart method
+ in your Bacula Events Class, Bacula will create a Job Object. This
+ object will be passed to the JobStart event. The Job Object has a
+ has good number of read-only members or attributes providing many
+ details of the Job, and it also has a number of writable attributes
+ that allow you to pass information into the Job. These attributes
+ are described below.
+
+\item [The Job Events Class]
+ You create this class in the JobStart method of your Bacula Events
+ class, and it allows you to define which of the possible Job Object
+ events you want to see. You must pass an instance of your Job Events
+ class to the Job Object set\_events() method.
+ Normally, you will probably only have one
+ Job Events Class, which will be instantiated for each Job. However,
+ if you wish to see different events in different Jobs, you may have
+ as many Job Events classes as you wish.
+\end{description}
+
+
+The first thing the startup script must do is to define what global Bacula
+events (daemon events), it wants to see. This is done by creating a
+Bacula Events class, instantiating it, then passing it to the
+{\bf set\_events} method. There are three possible
+events.
+
+\begin{description}
+\item [JobStart]
+ \index[general]{JobStart}
+ This Python method, if defined, will be called each time a Job is started.
+ The method is passed the class instantiation object as the first argument,
+ and the Bacula Job object as the second argument. The Bacula Job object
+ has several built-in methods, and you can define which ones you
+ want called. If you do not define this method, you will not be able
+ to interact with Bacula jobs.
+
+\item [JobEnd]
+ This Python method, if defined, will be called each time a Job terminates.
+ The method is passed the class instantiation object as the first argument,
+ and the Bacula Job object as the second argument.
+
+\item [Exit]
+ This Python method, if defined, will be called when the Director terminates.
+ The method is passed the class instantiation object as the first argument.
+\end{description}
+
+Access to the Bacula variables and methods is done with:
+
+ import bacula
+
+The following are the read-only attributes provided by the bacula object.
+\begin{description}
+\item [Name]
+\item [ConfigFile]
+\item [WorkingDir]
+\item [Version] string consisting of "Version Build-date"
+\end{description}
+
+
+A simple definition of the Bacula Events Class might be the following:
+
+\footnotesize
+\begin{verbatim}
+import sys, bacula
+class BaculaEvents:
+ def JobStart(self, job):
+ ...
+\end{verbatim}
+\normalsize
+
+Then to instantiate the class and pass it to Bacula, you
+would do:
+
+\footnotesize
+\begin{verbatim}
+bacula.set_events(BaculaEvents()) # register Bacula Events wanted
+\end{verbatim}
+\normalsize
+
+And at that point, each time a Job is started, your BaculaEvents JobStart
+method will be called.
+
+Now to actually do anything with a Job, you must define which Job events
+you want to see, and this is done by defining a JobEvents class containing
+the methods you want called. Each method name corresponds to one of the
+Job Events that Bacula will generate.
+
+A simple Job Events class might look like the following:
+
+\footnotesize
+\begin{verbatim}
+class JobEvents:
+ def NewVolume(self, job):
+ ...
+\end{verbatim}
+\normalsize
+
+Here, your JobEvents class method NewVolume will be called each time
+the Job needs a new Volume name. To actually register the events defined
+in your class with the Job, you must instantiate the JobEvents class and
+set it in the Job {\bf set\_events} variable. Note, this is a bit different
+from how you registered the Bacula events. The registration process must
+be done in the Bacula JobStart event (your method). So, you would modify
+Bacula Events (not the Job events) as follows:
+
+\footnotesize
+\begin{verbatim}
+import sys, bacula
+class BaculaEvents:
+ def JobStart(self, job):
+ events = JobEvents() # create instance of Job class
+ job.set_events(events) # register Job events desired
+ ...
+\end{verbatim}
+\normalsize
+
+When a job event is triggered, the appropriate event definition is
+called in the JobEvents class. This is the means by which your Python
+script or code gets control. Once it has control, it may read job
+attributes, or set them. See below for a list of read-only attributes,
+and those that are writable.
+
+In addition, the Bacula {\bf job} object in the Director has
+a number of methods (subroutines) that can be called. They
+are:
+\begin{description}
+\item [set\_events] The set\_events method takes a single
+ argument, which is the instantiation of the Job Events class
+ that contains the methods that you want called. The method
+ names that will be called must correspond to the Bacula
+ defined events. You may define additional methods but Bacula
+ will not use them.
+\item [run] The run method takes a single string
+ argument, which is the run command (same as in the Console)
+ that you want to submit to start a new Job. The value
+ returned by the run method is the JobId of the job that
+ started, or -1 if there was an error.
+\item [write] The write method is used to be able to send
+ print output to the Job Report. This will be described later.
+\item[cancel] The cancel method takes a single integer argument,
+ which is a JobId. If JobId is found, it will be canceled.
+\item [DoesVolumeExist] The DoesVolumeExist method takes a single
+ string argument, which is the Volume name, and returns
+ 1 if the volume exists in the Catalog and 0 if the volume
+ does not exist.
+\end{description}
+
+The following attributes are read/write within the Director
+for the {\bf job} object.
+
+\begin{description}
+\item [Priority] Read or set the Job priority.
+ Note, that setting a Job Priority is effective only before
+ the Job actually starts.
+\item [Level] This attribute contains a string representing the Job
+ level, e.g. Full, Differential, Incremental, ... if read.
+ The level can also be set.
+\end{description}
+
+The following read-only attributes are available within the Director
+for the {\bf job} object.
+
+\begin{description}
+\item [Type] This attribute contains a string representing the Job
+ type, e.g. Backup, Restore, Verify, ...
+\item [JobId] This attribute contains an integer representing the
+ JobId.
+\item [Client] This attribute contains a string with the name of the
+ Client for this job.
+\item [NumVols] This attribute contains an integer with the number of
+ Volumes in the Pool being used by the Job.
+\item [Pool] This attribute contains a string with the name of the Pool
+ being used by the Job.
+\item [Storage] This attribute contains a string with the name of the
+ Storage resource being used by the Job.
+\item [Catalog] This attribute contains a string with the name of the
+ Catalog resource being used by the Job.
+\item [MediaType] This attribute contains a string with the name of the
+ Media Type associated with the Storage resource being used by the Job.
+\item [Job] This attribute contains a string containing the name of the
+ Job resource used by this job (not unique).
+\item [JobName] This attribute contains a string representing the full
+ unique Job name.
+\item [JobStatus] This attribute contains a single character string
+ representing the current Job status. The status may change
+ during execution of the job. It may take on the following
+ values:
+ \begin{description}
+ \item [C] Created, not yet running
+ \item [R] Running
+ \item [B] Blocked
+ \item [T] Completed successfully
+ \item [E] Terminated with errors
+ \item [e] Non-fatal error
+ \item [f] Fatal error
+ \item [D] Verify found differences
+ \item [A] Canceled by user
+ \item [F] Waiting for Client
+ \item [S] Waiting for Storage daemon
+ \item [m] Waiting for new media
+ \item [M] Waiting for media mount
+ \item [s] Waiting for storage resource
+ \item [j] Waiting for job resource
+ \item [c] Waiting for client resource
+ \item [d] Waiting on maximum jobs
+ \item [t] Waiting on start time
+ \item [p] Waiting on higher priority jobs
+ \end{description}
+
+\item [Priority] This attribute contains an integer with the priority
+ assigned to the job.
+\item [CatalogRes] tuple consisting of (DBName, Address, User,
+ Password, Socket, Port, Database Vendor) taken from the Catalog resource
+ for the Job with the exception of Database Vendor, which is
+ one of the following: MySQL, PostgreSQL, SQLite, Internal,
+ depending on what database you configured.
+\item [VolumeName]
+ After a Volume has been purged, this attribute will contain the
+ name of that Volume. At other times, this value may have no meaning.
+\end{description}
+
+The following write-only attributes are available within the
+Director:
+
+\begin{description}
+\item [JobReport] Send line to the Job Report.
+\item [VolumeName] Set a new Volume name. Valid only during the
+ NewVolume event.
+\end{description}
+
+\section{Python Console Command}
+\index[general]{Python Console Command}
+\index[general]{Console Command!Python}
+
+There is a new Console command named {\bf python}. It takes
+a single argument {\bf restart}. Example:
+\begin{verbatim}
+ python restart
+\end{verbatim}
+
+This command restarts the Python interpreter in the Director.
+This can be useful when you are modifying the DirStartUp script,
+because normally Python will cache it, and thus the
+script will be read one time.
+
+\section{Debugging Python Scripts}
+\index[general]{Debugging Python Scripts}
+In general, you debug your Python scripts by using print statements.
+You can also develop your script or important parts of it as a
+separate file using the Python interpreter to run it. Once you
+have it working correctly, you can then call the script from
+within the Bacula Python script (DirStartUp.py).
+
+If you are having problems loading DirStartUp.py, you will probably
+not get any error messages because Bacula can only print Python
+error messages after the Python interpreter is started. However, you
+may be able to see the error messages by starting Bacula in
+a shell window with the {\bf -d1} option on the command line. That
+should cause the Python error messages to be printed in the shell
+window.
+
+If you are getting error messages such as the following when
+loading DirStartUp.py:
+
+\begin{verbatim}
+ Traceback (most recent call last):
+ File "/etc/bacula/scripts/DirStartUp.py", line 6, in ?
+ import time, sys, bacula
+ ImportError: /usr/lib/python2.3/lib-dynload/timemodule.so: undefined
+ symbol: PyInt_FromLong
+ bacula-dir: pythonlib.c:134 Python Import error.
+\end{verbatim}
+
+It is because the DirStartUp script is calling a dynamically loaded
+module (timemodule.so in the above case) that then tries to use
+Python functions exported from the Python interpreter (in this case
+PyInt\_FromLong). The way Bacula is currently linked with Python does
+not permit this. The solution to the problem is to put such functions
+(in this case the import of time into a separate Python script, which
+will do your calculations and return the values you want. Then call
+(not import) this script from the Bacula DirStartUp.py script, and
+it all should work as you expect.
+
+
+
+
+
+\section{Python Example}
+\index[general]{Python Example}
+\index[general]{Example!Python}
+
+An example script for the Director startup file is provided in
+{\bf examples/python/DirStartup.py} as follows:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula Python interface script for the Director
+#
+
+# You must import both sys and bacula
+import sys, bacula
+
+# This is the list of Bacula daemon events that you
+# can receive.
+class BaculaEvents(object):
+ def __init__(self):
+ # Called here when a new Bacula Events class is
+ # is created. Normally not used
+ noop = 1
+
+ def JobStart(self, job):
+ """
+ Called here when a new job is started. If you want
+ to do anything with the Job, you must register
+ events you want to receive.
+ """
+ events = JobEvents() # create instance of Job class
+ events.job = job # save Bacula's job pointer
+ job.set_events(events) # register events desired
+ sys.stderr = events # send error output to Bacula
+ sys.stdout = events # send stdout to Bacula
+ jobid = job.JobId; client = job.Client
+ numvols = job.NumVols
+ job.JobReport="Python Dir JobStart: JobId=%d Client=%s NumVols=%d\n" % (jobid,client,numvols)
+
+ # Bacula Job is going to terminate
+ def JobEnd(self, job):
+ jobid = job.JobId
+ client = job.Client
+ job.JobReport="Python Dir JobEnd output: JobId=%d Client=%s.\n" % (jobid, client)
+
+ # Called here when the Bacula daemon is going to exit
+ def Exit(self, job):
+ print "Daemon exiting."
+
+bacula.set_events(BaculaEvents()) # register daemon events desired
+
+"""
+ These are the Job events that you can receive.
+"""
+class JobEvents(object):
+ def __init__(self):
+ # Called here when you instantiate the Job. Not
+ # normally used
+ noop = 1
+
+ def JobInit(self, job):
+ # Called when the job is first scheduled
+ noop = 1
+
+ def JobRun(self, job):
+ # Called just before running the job after initializing
+ # This is the point to change most Job parameters.
+ # It is equivalent to the JobRunBefore point.
+ noop = 1
+
+ def NewVolume(self, job):
+ # Called when Bacula wants a new Volume name. The Volume
+ # name returned, if any, must be stored in job.VolumeName
+ jobid = job.JobId
+ client = job.Client
+ numvol = job.NumVols;
+ print job.CatalogRes
+ job.JobReport = "JobId=%d Client=%s NumVols=%d" % (jobid, client, numvol)
+ job.JobReport="Python before New Volume set for Job.\n"
+ Vol = "TestA-%d" % numvol
+ job.JobReport = "Exists=%d TestA-%d" % (job.DoesVolumeExist(Vol), numvol)
+ job.VolumeName="TestA-%d" % numvol
+ job.JobReport="Python after New Volume set for Job.\n"
+ return 1
+
+ def VolumePurged(self, job):
+ # Called when a Volume is purged. The Volume name can be referenced
+ # with job.VolumeName
+ noop = 1
+
+
+
+\end{verbatim}
+\normalsize
--- /dev/null
+%%
+%%
+
+\chapter{Using Stunnel to Encrypt Communications}
+\label{StunnelChapter}
+\index[general]{Using Stunnel to Encrypt Communications to Clients }
+
+Prior to version 1.37, Bacula did not have built-in communications encryption.
+Please see the \ilink {TLS chapter}{CommEncryption} if you are using Bacula
+1.37 or greater.
+
+Without too much effort, it is possible to encrypt the communications
+between any of the daemons. This chapter will show you how to use {\bf
+stunnel} to encrypt communications to your client programs. We assume the
+Director and the Storage daemon are running on one machine that will be called
+{\bf server} and the Client or File daemon is running on a different machine
+called {\bf client}. Although the details may be slightly different, the same
+principles apply whether you are encrypting between Unix, Linux, or Win32
+machines. This example was developed between two Linux machines running
+stunnel version 4.04-4 on a Red Hat Enterprise 3.0 system.
+
+\section{Communications Ports Used}
+\index[general]{Used!Communications Ports }
+\index[general]{Communications Ports Used }
+
+First, you must know that with the standard Bacula configuration, the Director
+will contact the File daemon on port 9102. The File daemon then contacts the
+Storage daemon using the address and port parameters supplied by the Director.
+The standard port used will be 9103. This is the typical server/client view of
+the world, the File daemon is a server to the Director (i.e. listens for the
+Director to contact it), and the Storage daemon is a server to the File
+daemon.
+
+\section{Encryption}
+\index[general]{Encryption }
+
+The encryption is accomplished between the Director and the File daemon by
+using an stunnel on the Director's machine (server) to encrypt the data and to
+contact an stunnel on the File daemon's machine (client), which decrypts the
+data and passes it to the client.
+
+Between the File daemon and the Storage daemon, we use an stunnel on the File
+daemon's machine to encrypt the data and another stunnel on the Storage
+daemon's machine to decrypt the data.
+
+As a consequence, there are actually four copies of stunnel running, two on the
+server and two on the client. This may sound a bit complicated, but it really
+isn't. To accomplish this, we will need to construct four separate conf files
+for stunnel, and we will need to make some minor modifications to the
+Director's conf file. None of the other conf files need to be changed.
+
+\section{A Picture}
+\index[general]{Picture }
+
+Since pictures usually help a lot, here is an overview of what we will be
+doing. Don't worry about all the details of the port numbers and such for the
+moment.
+
+\footnotesize
+\begin{verbatim}
+ File daemon (client):
+ stunnel-fd1.conf
+ |===========|
+ Port 29102 >----| Stunnel 1 |-----> Port 9102
+ |===========|
+ stunnel-fd2.conf
+ |===========|
+ Port 9103 >----| Stunnel 2 |-----> server:29103
+ |===========|
+ Director (server):
+ stunnel-dir.conf
+ |===========|
+ Port 29102 >----| Stunnel 3 |-----> client:29102
+ |===========|
+ stunnel-sd.conf
+ |===========|
+ Port 29103 >----| Stunnel 4 |-----> 9103
+ |===========|
+\end{verbatim}
+\normalsize
+
+\section{Certificates}
+\index[general]{Certificates }
+
+In order for stunnel to function as a server, which it does in our diagram for
+Stunnel 1 and Stunnel 4, you must have a certificate and the key. It is
+possible to keep the two in separate files, but normally, you keep them in one
+single .pem file. You may create this certificate yourself in which case, it
+will be self-signed, or you may have it signed by a CA.
+
+If you want your clients to verify that the server is in fact valid (Stunnel 2
+and Stunnel 3), you will need to have the server certificates signed by a CA
+(Certificate Authority), and you will need to have the CA's public certificate
+(contains the CA's public key).
+
+Having a CA signed certificate is {\bf highly} recommended if you are using
+your client across the Internet, otherwise you are exposed to the man in the
+middle attack and hence loss of your data.
+
+See below for how to create a self-signed certificate.
+
+\section{Securing the Data Channel}
+\index[general]{Channel!Securing the Data }
+\index[general]{Securing the Data Channel }
+
+To simplify things a bit, let's for the moment consider only the data channel.
+That is the connection between the File daemon and the Storage daemon, which
+takes place on port 9103. In fact, in a minimalist solution, this is the only
+connection that needs to be encrypted, because it is the one that transports your
+data. The connection between the Director and the File daemon is simply a
+control channel used to start the job and get the job status.
+
+Normally the File daemon will contact the Storage daemon on port 9103
+(supplied by the Director), so we need an stunnel that listens on port 9103 on
+the File daemon's machine, encrypts the data and sends it to the Storage
+daemon. This is depicted by Stunnel 2 above. Note that this stunnel is
+listening on port 9103 and sending to server:29103. We use port 29103 on the
+server because if we would send the data to port 9103, it would go directly to the
+Storage daemon, which doesn't understand encrypted data. On the server
+machine, we run Stunnel 4, which listens on port 29103, decrypts the data and
+sends it to the Storage daemon, which is listening on port 9103.
+
+\section{Data Channel Configuration}
+\index[general]{Modification of bacula-dir.conf for the Data Channel }
+\index[general]{baculoa-dir.conf!Modification for the Data Channel }
+
+The Storage resource of the bacula-dir.conf normally looks something like the
+following:
+
+\footnotesize
+\begin{verbatim}
+Storage {
+ Name = File
+ Address = server
+ SDPort = 9103
+ Password = storage_password
+ Device = File
+ Media Type = File
+}
+\end{verbatim}
+\normalsize
+
+Notice that this is running on the server machine, and it points the File
+daemon back to server:9103, which is where our Storage daemon is listening. We
+modify this to be:
+
+\footnotesize
+\begin{verbatim}
+Storage {
+ Name = File
+ Address = localhost
+ SDPort = 9103
+ Password = storage_password
+ Device = File
+ Media Type = File
+}
+\end{verbatim}
+\normalsize
+
+This causes the File daemon to send the data to the stunnel running on
+localhost (the client machine). We could have used client as the address as
+well.
+
+\section{Stunnel Configuration for the Data Channel}
+\index[general]{Stunnel Configuration for the Data Channel }
+
+In the diagram above, we see above Stunnel 2 that we use stunnel-fd2.conf on the
+client. A pretty much minimal config file would look like the following:
+
+\footnotesize
+\begin{verbatim}
+client = yes
+[29103]
+accept = localhost:9103
+connect = server:29103
+\end{verbatim}
+\normalsize
+
+The above config file does encrypt the data but it does not require a
+certificate, so it is subject to the man in the middle attack. The file I
+actually used, stunnel-fd2.conf, looked like this:
+
+\footnotesize
+\begin{verbatim}
+#
+# Stunnel conf for Bacula client -> SD
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29103]
+accept = localhost:9103
+connect = server:29103
+\end{verbatim}
+\normalsize
+
+You will notice that I specified a pid file location because I ran stunnel
+under my own userid so I could not use the default, which requires root
+permission. I also specified a certificate that I have as well as verify level
+2 so that the certificate is required and verified, and I must supply the
+location of the CA (Certificate Authority) certificate so that the stunnel
+certificate can be verified. Finally, you will see that there are two lines
+commented out, which when enabled, produce a lot of nice debug info in the
+command window.
+
+If you do not have a signed certificate (stunnel.pem), you need to delete the
+cert, CAfile, and verify lines.
+
+Note that the stunnel.pem, is actually a private key and a certificate in a
+single file. These two can be kept and specified individually, but keeping
+them in one file is more convenient.
+
+The config file, stunnel-sd.conf, needed for Stunnel 4 on the server machine
+is:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for Storage daemon
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is mandatory here, it may be self signed
+# If it is self signed, the client may not use
+# verify
+#
+cert = /home/kern/stunnel/stunnel.pem
+client = no
+# debug = 7
+# foreground = yes
+[29103]
+accept = 29103
+connect = 9103
+\end{verbatim}
+\normalsize
+
+\section{Starting and Testing the Data Encryption}
+\index[general]{Starting and Testing the Data Encryption }
+\index[general]{Encryption!Starting and Testing the Data }
+
+It will most likely be the simplest to implement the Data Channel encryption
+in the following order:
+
+\begin{itemize}
+\item Setup and run Bacula backing up some data on your client machine
+ without encryption.
+\item Stop Bacula.
+\item Modify the Storage resource in the Director's conf file.
+\item Start Bacula
+\item Start stunnel on the server with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-sd.conf
+
+\end{verbatim}
+\normalsize
+
+\item Start stunnel on the client with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-fd2.conf
+
+\end{verbatim}
+\normalsize
+
+\item Run a job.
+\item If it doesn't work, turn debug on in both stunnel conf files, restart
+ the stunnels, rerun the job, repeat until it works.
+ \end{itemize}
+
+\section{Encrypting the Control Channel}
+\index[general]{Channel!Encrypting the Control }
+\index[general]{Encrypting the Control Channel }
+
+The Job control channel is between the Director and the File daemon, and as
+mentioned above, it is not really necessary to encrypt, but it is good
+practice to encrypt it as well. The two stunnels that are used in this case
+will be Stunnel 1 and Stunnel 3 in the diagram above. Stunnel 3 on the server
+might normally listen on port 9102, but if you have a local File daemon, this
+will not work, so we make it listen on port 29102. It then sends the data to
+client:29102. Again we use port 29102 so that the stunnel on the client
+machine can decrypt the data before passing it on to port 9102 where the File
+daemon is listening.
+
+\section{Control Channel Configuration}
+\index[general]{Control Channel Configuration }
+
+We need to modify the standard Client resource, which would normally look
+something like:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client-fd
+ Address = client
+ FDPort = 9102
+ Catalog = BackupDB
+ Password = "xxx"
+}
+\end{verbatim}
+\normalsize
+
+to be:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client-fd
+ Address = localhost
+ FDPort = 29102
+ Catalog = BackupDB
+ Password = "xxx"
+}
+\end{verbatim}
+\normalsize
+
+This will cause the Director to send the control information to
+localhost:29102 instead of directly to the client.
+
+\section{Stunnel Configuration for the Control Channel}
+\index[general]{Config Files for stunnel to Encrypt the Control Channel }
+
+The stunnel config file, stunnel-dir.conf, for the Director's machine would
+look like the following:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for the Directory to contact a client
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29102]
+accept = localhost:29102
+connect = client:29102
+\end{verbatim}
+\normalsize
+
+and the config file, stunnel-fd1.conf, needed to run stunnel on the Client
+would be:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for the Directory to contact a client
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29102]
+accept = localhost:29102
+connect = client:29102
+\end{verbatim}
+\normalsize
+
+\section{Starting and Testing the Control Channel}
+\index[general]{Starting and Testing the Control Channel }
+\index[general]{Channel!Starting and Testing the Control }
+
+It will most likely be the simplest to implement the Control Channel
+encryption in the following order:
+
+\begin{itemize}
+\item Stop Bacula.
+\item Modify the Client resource in the Director's conf file.
+\item Start Bacula
+\item Start stunnel on the server with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-dir.conf
+
+\end{verbatim}
+\normalsize
+
+\item Start stunnel on the client with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-fd1.conf
+
+\end{verbatim}
+\normalsize
+
+\item Run a job.
+\item If it doesn't work, turn debug on in both stunnel conf files, restart
+ the stunnels, rerun the job, repeat until it works.
+ \end{itemize}
+
+\section{Using stunnel to Encrypt to a Second Client}
+\index[general]{Using stunnel to Encrypt to a Second Client }
+\index[general]{Client!Using stunnel to Encrypt to a Second }
+
+On the client machine, you can just duplicate the setup that you have on the
+first client file for file and it should work fine.
+
+In the bacula-dir.conf file, you will want to create a second client pretty
+much identical to how you did for the first one, but the port number must be
+unique. We previously used:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client-fd
+ Address = localhost
+ FDPort = 29102
+ Catalog = BackupDB
+ Password = "xxx"
+}
+\end{verbatim}
+\normalsize
+
+so for the second client, we will, of course, have a different name, and we
+will also need a different port. Remember that we used port 29103 for the
+Storage daemon, so for the second client, we can use port 29104, and the
+Client resource would look like:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client2-fd
+ Address = localhost
+ FDPort = 29104
+ Catalog = BackupDB
+ Password = "yyy"
+}
+\end{verbatim}
+\normalsize
+
+Now, fortunately, we do not need a third stunnel to on the Director's machine,
+we can just add the new port to the config file, stunnel-dir.conf, to make:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for the Directory to contact a client
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29102]
+accept = localhost:29102
+connect = client:29102
+[29104]
+accept = localhost:29102
+connect = client2:29102
+\end{verbatim}
+\normalsize
+
+There are no changes necessary to the Storage daemon or the other stunnel so
+that this new client can talk to our Storage daemon.
+
+\section{Creating a Self-signed Certificate}
+\index[general]{Creating a Self-signed Certificate }
+\index[general]{Certificate!Creating a Self-signed }
+
+You may create a self-signed certificate for use with stunnel that will permit
+you to make it function, but will not allow certificate validation. The .pem
+file containing both the certificate and the key can be made with the
+following, which I put in a file named {\bf makepem}:
+
+\footnotesize
+\begin{verbatim}
+#!/bin/sh
+#
+# Simple shell script to make a .pem file that can be used
+# with stunnel and Bacula
+#
+OPENSSL=openssl
+ umask 77
+ PEM1="/bin/mktemp openssl.XXXXXX"
+ PEM2="/bin/mktemp openssl.XXXXXX"
+ ${OPENSSL} req -newkey rsa:1024 -keyout $PEM1 -nodes \
+ -x509 -days 365 -out $PEM2
+ cat $PEM1 > stunnel.pem
+ echo "" >>stunnel.pem
+ cat $PEM2 >>stunnel.pem
+ rm $PEM1 $PEM2
+\end{verbatim}
+\normalsize
+
+The above script will ask you a number of questions. You may simply answer
+each of them by entering a return, or if you wish you may enter your own data.
+
+
+\section{Getting a CA Signed Certificate}
+\index[general]{Certificate!Getting a CA Signed }
+\index[general]{Getting a CA Signed Certificate }
+
+The process of getting a certificate that is signed by a CA is quite a bit
+more complicated. You can purchase one from quite a number of PKI vendors, but
+that is not at all necessary for use with Bacula.
+
+To get a CA signed
+certificate, you will either need to find a friend that has setup his own CA
+or to become a CA yourself, and thus you can sign all your own certificates.
+The book OpenSSL by John Viega, Matt Mesier \& Pravir Chandra from O'Reilly
+explains how to do it, or you can read the documentation provided in the
+Open-source PKI Book project at Source Forge:
+\elink{
+http://ospkibook.sourceforge.net/docs/OSPKI-2.4.7/OSPKI-html/ospki-book.htm}
+{http://ospkibook.sourceforge.net/docs/OSPKI-2.4.7/OSPKI-html/ospki-book.htm}.
+Note, this link may change.
+
+\section{Using ssh to Secure the Communications}
+\index[general]{Communications!Using ssh to Secure the }
+\index[general]{Using ssh to Secure the Communications }
+
+Please see the script {\bf ssh-tunnel.sh} in the {\bf examples} directory. It
+was contributed by Stephan Holl.
--- /dev/null
+#!/usr/bin/perl -w
+#
+use strict;
+
+# Used to change the names of the image files generated by latex2html from imgxx.png
+# to meaningful names. Provision is made to go either from or to the meaningful names.
+# The meaningful names are obtained from a file called imagename_translations, which
+# is generated by extensions to latex2html in the make_image_file subroutine in
+# bacula.perl.
+
+# Opens the file imagename_translations and reads the contents into a hash.
+# The hash is creaed with the imgxx.png files as the key if processing TO
+# meaningful filenames, and with the meaningful filenames as the key if
+# processing FROM meaningful filenames.
+# Then opens the html file(s) indicated in the command-line arguments and
+# changes all image references according to the translations described in the
+# above file. Finally, it renames the image files.
+#
+# Original creation: 3-27-05 by Karl Cunningham.
+# Modified 5-21-05 to go FROM and TO meaningful filenames.
+#
+my $TRANSFILE = "imagename_translations";
+my $path;
+
+# Loads the contents of $TRANSFILE file into the hash referenced in the first
+# argument. The hash is loaded to translate old to new if $direction is 0,
+# otherwise it is loaded to translate new to old. In this context, the
+# 'old' filename is the meaningful name, and the 'new' filename is the
+# imgxx.png filename. It is assumed that the old image is the one that
+# latex2html has used as the source to create the imgxx.png filename.
+# The filename extension is taken from the file
+sub read_transfile {
+ my ($trans,$direction) = @_;
+
+ if (!open IN,"<$path$TRANSFILE") {
+ print "WARNING: Cannot open image translation file $path$TRANSFILE for reading\n";
+ print " Image filename translation aborted\n\n";
+ exit 0;
+ }
+
+ while (<IN>) {
+ chomp;
+ my ($new,$old) = split(/\001/);
+
+ # Old filenames will usually have a leading ./ which we don't need.
+ $old =~ s/^\.\///;
+
+ # The filename extension of the old filename must be made to match
+ # the new filename because it indicates the encoding format of the image.
+ my ($ext) = $new =~ /(\.[^\.]*)$/;
+ $old =~ s/\.[^\.]*$/$ext/;
+ if ($direction == 0) {
+ $trans->{$new} = $old;
+ } else {
+ $trans->{$old} = $new;
+ }
+ }
+ close IN;
+}
+
+# Translates the image names in the file given as the first argument, according to
+# the translations in the hash that is given as the second argument.
+# The file contents are read in entirely into a string, the string is processed, and
+# the file contents are then written. No particular care is taken to ensure that the
+# file is not lost if a system failure occurs at an inopportune time. It is assumed
+# that the html files being processed here can be recreated on demand.
+#
+# Links to other files are added to the %filelist for processing. That way,
+# all linked files will be processed (assuming they are local).
+sub translate_html {
+ my ($filename,$trans,$filelist) = @_;
+ my ($contents,$out,$this,$img,$dest);
+ my $cnt = 0;
+
+ # If the filename is an external link ignore it. And drop any file:// from
+ # the filename.
+ $filename =~ /^(http|ftp|mailto)\:/ and return 0;
+ $filename =~ s/^file\:\/\///;
+ # Load the contents of the html file.
+ if (!open IF,"<$path$filename") {
+ print "WARNING: Cannot open $path$filename for reading\n";
+ print " Image Filename Translation aborted\n\n";
+ exit 0;
+ }
+
+ while (<IF>) {
+ $contents .= $_;
+ }
+ close IF;
+
+ # Now do the translation...
+ # First, search for an image filename.
+ while ($contents =~ /\<\s*IMG[^\>]*SRC=\"/si) {
+ $contents = $';
+ $out .= $` . $&;
+
+ # The next thing is an image name. Get it and translate it.
+ $contents =~ /^(.*?)\"/s;
+ $contents = $';
+ $this = $&;
+ $img = $1;
+ # If the image is in our list of ones to be translated, do it
+ # and feed the result to the output.
+ $cnt += $this =~ s/$img/$trans->{$img}/ if (defined($trans->{$img}));
+ $out .= $this;
+ }
+ $out .= $contents;
+
+ # Now send the translated text to the html file, overwriting what's there.
+ open OF,">$path$filename" or die "Cannot open $path$filename for writing\n";
+ print OF $out;
+ close OF;
+
+ # Now look for any links to other files and add them to the list of files to do.
+ while ($out =~ /\<\s*A[^\>]*HREF=\"(.*?)\"/si) {
+ $out = $';
+ $dest = $1;
+ # Drop an # and anything after it.
+ $dest =~ s/\#.*//;
+ $filelist->{$dest} = '' if $dest;
+ }
+ return $cnt;
+}
+
+# REnames the image files spefified in the %translate hash.
+sub rename_images {
+ my $translate = shift;
+ my ($response);
+
+ foreach (keys(%$translate)) {
+ if (! $translate->{$_}) {
+ print " WARNING: No destination Filename for $_\n";
+ } else {
+ $response = `mv -f $path$_ $path$translate->{$_} 2>&1`;
+ $response and print "ERROR from system $response\n";
+ }
+ }
+}
+
+#################################################
+############# MAIN #############################
+################################################
+
+# %filelist starts out with keys from the @ARGV list. As files are processed,
+# any links to other files are added to the %filelist. A hash of processed
+# files is kept so we don't do any twice.
+
+# The first argument must be either --to_meaningful_names or --from_meaningful_names
+
+my (%translate,$search_regex,%filelist,%completed,$thisfile);
+my ($cnt,$direction);
+
+my $arg0 = shift(@ARGV);
+$arg0 =~ /^(--to_meaningful_names|--from_meaningful_names)$/ or
+ die "ERROR: First argument must be either \'--to_meaningful_names\' or \'--from_meaningful_names\'\n";
+
+$direction = ($arg0 eq '--to_meaningful_names') ? 0 : 1;
+
+(@ARGV) or die "ERROR: Filename(s) to process must be given as arguments\n";
+
+# Use the first argument to get the path to the file of translations.
+my $tmp = $ARGV[0];
+($path) = $tmp =~ /(.*\/)/;
+$path = '' unless $path;
+
+read_transfile(\%translate,$direction);
+
+foreach (@ARGV) {
+ # Strip the path from the filename, and use it later on.
+ if (s/(.*\/)//) {
+ $path = $1;
+ } else {
+ $path = '';
+ }
+ $filelist{$_} = '';
+
+ while ($thisfile = (keys(%filelist))[0]) {
+ $cnt += translate_html($thisfile,\%translate,\%filelist) if (!exists($completed{$thisfile}));
+ delete($filelist{$thisfile});
+ $completed{$thisfile} = '';
+ }
+ print "translate_images.pl: $cnt image filenames translated ",($direction)?"from":"to"," meaningful names\n";
+}
+
+rename_images(\%translate);
--- /dev/null
+%%
+%%
+
+\chapter{Variable Expansion}
+\label{VarsChapter}
+\index[general]{Variable Expansion }
+\index[general]{Expansion!Variable }
+
+% TODO: does the following mean that this should not be in book?
+
+Please note that as of version 1.37, the Variable Expansion
+is deprecated and replaced by Python scripting (not yet
+documented).
+
+Variable expansion is somewhat similar to Unix shell variable expansion.
+Currently (version 1.31), it is used only in format labels, but in the future,
+it will most likely be used in more places.
+
+\section{General Functionality}
+\index[general]{Functionality!General }
+\index[general]{General Functionality }
+
+This is basically a string expansion capability that permits referencing
+variables, indexing arrays, conditional replacement of variables, case
+conversion, substring selection, regular expression matching and replacement,
+character class replacement, padding strings, repeated expansion in a user
+controlled loop, support of arithmetic expressions in the loop start, step and
+end conditions, and recursive expansion.
+
+When using variable expansion characters in a Volume Label Format record, the
+format should always be enclosed in double quotes ({\bf "}).
+
+For example, {\bf \$\{HOME\}} will be replaced by your home directory as
+defined in the environment. If you have defined the variable {\bf xxx} to be
+{\bf Test}, then the reference {\bf \$\{xxx:p/7/Y/r\}} will right pad the
+contents of {\bf xxx} to a length of seven characters filling with the
+character {\bf Y} giving {\bf YYYTest}.
+
+\section{Bacula Variables}
+\index[general]{Bacula Variables }
+\index[general]{Variables!Bacula }
+
+Within Bacula, there are three main classes of variables with some minor
+variations within the classes. The classes are:
+
+\begin{description}
+
+\item [Counters]
+ \index[general]{Counters }
+ Counters are defined by the {\bf Counter} resources in the Director's conf
+file. The counter can either be a temporary counter that lasts for the
+duration of Bacula's execution, or it can be a variable that is stored in
+the catalog, and thus retains its value from one Bacula execution to another.
+Counter variables may be incremented by postfixing a plus sign ({\bf +} after
+the variable name).
+
+\item [Internal Variables]
+ \index[general]{Internal Variables }
+ Internal variables are read-only, and may be related to the current job (i.e.
+Job name), or maybe special variables such as the date and time. The
+following variables are available:
+
+\begin{itemize}
+\item [Year] -- the full year
+\item [Month] -- the current month 1-12
+\item [Day] -- the day of the month 1-31
+\item [Hour] -- the hour 0-24
+\item [Minute] -- the current minute 0-59
+\item [Second] -- the current second 0-59
+\item [WeekDay] -- the current day of the week 0-6 with 0 being Sunday
+\item [Job] -- the job name
+\item [general] -- the Director's name
+\item [Level] -- the Job Level
+\item [Type] -- the Job type
+\item [JobId] -- the JobId
+\item [JobName] -- the unique job name composed of Job and date
+\item [Storage] -- the Storage daemon's name
+\item [Client] -- the Client's name
+\item [NumVols] -- the current number of Volumes in the Pool
+\item [Pool] -- the Pool name
+\item [Catalog] -- the Catalog name
+\item [MediaType] -- the Media Type
+ \end{itemize}
+
+\item [Environment Variables]
+ \index[general]{Environment Variables }
+ Environment variables are read-only, and must be defined in the environment
+prior to executing Bacula. Environment variables may be either scalar or an
+array, where the elements of the array are referenced by subscripting the
+variable name (e.g. {\bf \$\{Months[3]\}}). Environment variable arrays are
+defined by separating the elements with a vertical bar ({\bf |}), thus {\bf
+set Months="Jan|Feb|Mar|Apr|..."} defines an environment variable named
+{\bf Month} that will be treated as an array, and the reference {\bf
+\$\{Months[3]\}} will yield {\bf Mar}. The elements of the array can have
+differing lengths.
+\end{description}
+
+\section{Full Syntax}
+\index[general]{Syntax!Full }
+\index[general]{Full Syntax }
+
+Since the syntax is quite extensive, below, you will find the pseudo BNF. The
+special characters have the following meaning:
+
+\footnotesize
+\begin{verbatim}
+ ::= definition
+ ( ) grouping if the parens are not quoted
+ | separates alternatives
+ '/' literal / (or any other character)
+ CAPS a character or character sequence
+ * preceding item can be repeated zero or more times
+ ? preceding item can appear zero or one time
+ + preceding item must appear one or more times
+\end{verbatim}
+\normalsize
+
+And the pseudo BNF describing the syntax is:
+
+\footnotesize
+\begin{verbatim}
+ input ::= ( TEXT
+ | variable
+ | INDEX_OPEN input INDEX_CLOSE (loop_limits)?
+ )*
+ variable ::= DELIM_INIT (name|expression)
+ name ::= (NAME_CHARS)+
+ expression ::= DELIM_OPEN
+ (name|variable)+
+ (INDEX_OPEN num_exp INDEX_CLOSE)?
+ (':' command)*
+ DELIM_CLOSE
+ command ::= '-' (TEXT_EXP|variable)+
+ | '+' (TEXT_EXP|variable)+
+ | 'o' NUMBER ('-'|',') (NUMBER)?
+ | '#'
+ | '*' (TEXT_EXP|variable)+
+ | 's' '/' (TEXT_PATTERN)+
+ '/' (variable|TEXT_SUBST)*
+ '/' ('m'|'g'|'i'|'t')*
+ | 'y' '/' (variable|TEXT_SUBST)+
+ '/' (variable|TEXT_SUBST)*
+ '/'
+ | 'p' '/' NUMBER
+ '/' (variable|TEXT_SUBST)*
+ '/' ('r'|'l'|'c')
+ | '%' (name|variable)+
+ ('(' (TEXT_ARGS)? ')')?
+ | 'l'
+ | 'u'
+ num_exp ::= operand
+ | operand ('+'|'-'|'*'|'/'|'%') num_exp
+ operand ::= ('+'|'-')? NUMBER
+ | INDEX_MARK
+ | '(' num_exp ')'
+ | variable
+ loop_limits ::= DELIM_OPEN
+ (num_exp)? ',' (num_exp)? (',' (num_exp)?)?
+ DELIM_CLOSE
+ NUMBER ::= ('0'|...|'9')+
+ TEXT_PATTERN::= (^('/'))+
+ TEXT_SUBST ::= (^(DELIM_INIT|'/'))+
+ TEXT_ARGS ::= (^(DELIM_INIT|')'))+
+ TEXT_EXP ::= (^(DELIM_INIT|DELIM_CLOSE|':'|'+'))+
+ TEXT ::= (^(DELIM_INIT|INDEX_OPEN|INDEX_CLOSE))+
+ DELIM_INIT ::= '$'
+ DELIM_OPEN ::= '{'
+ DELIM_CLOSE ::= '}'
+ INDEX_OPEN ::= '['
+ INDEX_CLOSE ::= ']'
+ INDEX_MARK ::= '#'
+ NAME_CHARS ::= 'a'|...|'z'|'A'|...|'Z'|'0'|...|'9'
+\end{verbatim}
+\normalsize
+
+\section{Semantics}
+\index[general]{Semantics }
+
+The items listed in {\bf command} above, which always follow a colon ({\bf :})
+have the following meanings:
+
+\footnotesize
+\begin{verbatim}
+ - perform substitution if variable is empty
+ + perform substitution if variable is not empty
+ o cut out substring of the variable value
+ # length of the variable value
+ * substitute empty string if the variable value is not empty,
+ otherwise substitute the trailing parameter
+ s regular expression search and replace. The trailing
+ options are: m = multiline, i = case insensitive,
+ g = global, t = plain text (no regexp)
+ y transpose characters from class A to class B
+ p pad variable to l = left, r = right or c = center,
+ with second value.
+ % special function call (none implemented)
+ l lower case the variable value
+ u upper case the variable value
+\end{verbatim}
+\normalsize
+
+The {\bf loop\_limits} are start, step, and end values.
+
+A counter variable name followed immediately by a plus ({\bf +}) will cause
+the counter to be incremented by one.
+
+\section{Examples}
+\index[general]{Examples }
+
+To create an ISO date:
+
+\footnotesize
+\begin{verbatim}
+ DLT-${Year}-${Month:p/2/0/r}-${Day:p/2/0/r}
+\end{verbatim}
+\normalsize
+
+on 20 June 2003 would give {\bf DLT-2003-06-20}
+
+If you set the environment variable {\bf mon} to
+
+\footnotesize
+\begin{verbatim}
+ January|February|March|April|May|...
+ File-${mon[${Month}]}/${Day}/${Year}
+\end{verbatim}
+\normalsize
+
+on the first of March would give {\bf File-March/1/2003 }
--- /dev/null
+#
+#
+# Makefile for LaTeX
+#
+# To build everything do
+# make tex
+# make web
+# make html
+# make dvipdf
+#
+# or simply
+#
+# make
+#
+# for rapid development do:
+# make tex
+# make show
+#
+#
+# If you are having problems getting "make" to work, debugging it is
+# easier if can see the output from latex, which is normally redirected
+# to /dev/null. To see it, do the following:
+#
+# cd docs/manual
+# make tex
+# latex bacula.tex
+#
+# typically the latex command will stop indicating the error (e.g. a
+# missing \ in front of a _ or a missing { or ] ...
+#
+# The following characters must be preceded by a backslash
+# to be entered as printable characters:
+#
+# # $ % & ~ _ ^ \ { }
+#
+
+IMAGES=../../../images
+
+DOC=misc
+
+first_rule: all
+
+all: tex web dvipdf mini-clean
+
+.SUFFIXES: .tex .html
+.PHONY:
+.DONTCARE:
+
+
+tex:
+ @./update_version
+ @echo "Making version `cat version.tex`"
+ @cp -fp ${IMAGES}/hires/*.eps .
+ @touch ${DOC}i-dir.tex ${DOC}i-fd.tex ${DOC}i-sd.tex \
+ ${DOC}i-console.tex ${DOC}i-general.tex
+ latex -interaction=batchmode ${DOC}.tex
+ makeindex ${DOC}.idx -o ${DOC}.ind 2>/dev/null
+ latex -interaction=batchmode ${DOC}.tex
+
+pdf:
+ @echo "Making pdfm"
+ @cp -fp ${IMAGES}/hires/*.eps .
+ dvipdfm -p a4 ${DOC}.dvi
+
+dvipdf:
+ @echo "Making dvi to pdf"
+ @cp -fp ${IMAGES}/hires/*.eps .
+ dvipdf ${DOC}.dvi ${DOC}.pdf
+
+html:
+ @echo " "
+ @echo "Making html"
+ @cp -fp ${IMAGES}/*.eps .
+ @rm -f next.eps next.png prev.eps prev.png up.eps up.png
+ @(if [ -f imagename_translations ] ; then \
+ ./translate_images.pl --from_meaningful_names ${DOC}.html; \
+ fi)
+ latex2html -white -no_subdir -split 0 -toc_stars -white \
+ -init_file latex2html-init.pl ${DOC} >tex.out 2>&1
+ ./translate_images.pl --to_meaningful_names ${DOC}.html
+ (cd ${DOC}; for i in *.png ; do cp -fp ../${IMAGES}/$${i} . 2>/dev/null; done)
+ @echo "Done making html"
+
+web:
+ @echo "Making web"
+ @mkdir -p ${DOC}
+ @cp -fp ${IMAGES}/*.eps .
+ @rm -f next.eps next.png prev.eps prev.png up.eps up.png
+ @cp -fp ${IMAGES}/*.eps ${DOC}/
+ @cp -fp ${IMAGES}/*.eps ${IMAGES}/*.png ${DOC}/
+ @rm -f ${DOC}/xp-*.png
+ @rm -f ${DOC}/next.eps ${DOC}/next.png ${DOC}/prev.eps ${DOC}/prev.png ${DOC}/up.eps ${DOC}/up.png
+ @rm -rf ${DOC}/*.html
+ latex2html -split 3 -local_icons -t "Miscellaneous Guide" -long_titles 4 \
+ -toc_stars -contents_in_nav -init_file latex2html-init.pl -white ${DOC} >tex.out 2>&1
+ ./translate_images.pl --to_meaningful_names ${DOC}/Miscel_Guide.html
+ (cd ${DOC}; for i in *.png ; do cp -fp ../${IMAGES}/$${i} . 2>/dev/null; done)
+ @echo "Done making web"
+show:
+ xdvi ${DOC}
+
+texcheck:
+ ./check_tex.pl ${DOC}.tex
+
+main_configs:
+ pic2graph -density 100 <main_configs.pic >main_configs.png
+
+mini-clean:
+ @rm -f 1 2 3 *.tex~
+ @rm -f *.gif *.jpg *.eps
+ @rm -f *.aux *.cp *.fn *.ky *.log *.pg
+ @rm -f *.backup *.ilg *.lof *.lot
+ @rm -f *.cdx *.cnd *.ddx *.ddn *.fdx *.fnd *.ind *.sdx *.snd
+ @rm -f *.dnd *.old *.out
+ @rm -f ${DOC}/*.gif ${DOC}/*.jpg ${DOC}/*.eps
+ @rm -f ${DOC}/*.aux ${DOC}/*.cp ${DOC}/*.fn ${DOC}/*.ky ${DOC}/*.log ${DOC}/*.pg
+ @rm -f ${DOC}/*.backup ${DOC}/*.ilg ${DOC}/*.lof ${DOC}/*.lot
+ @rm -f ${DOC}/*.cdx ${DOC}/*.cnd ${DOC}/*.ddx ${DOC}/*.ddn ${DOC}/*.fdx ${DOC}/*.fnd ${DOC}/*.ind ${DOC}/*.sdx ${DOC}/*.snd
+ @rm -f ${DOC}/*.dnd ${DOC}/*.old ${DOC}/*.out
+ @rm -f ${DOC}/WARNINGS
+
+
+clean:
+ @rm -f 1 2 3 *.tex~
+ @rm -f *.png *.gif *.jpg *.eps
+ @rm -f *.pdf *.aux *.cp *.fn *.ky *.log *.pg
+ @rm -f *.html *.backup *.ps *.dvi *.ilg *.lof *.lot
+ @rm -f *.cdx *.cnd *.ddx *.ddn *.fdx *.fnd *.ind *.sdx *.snd
+ @rm -f *.dnd imagename_translations
+ @rm -f *.old WARNINGS *.out *.toc *.idx
+ @rm -f ${DOC}i-*.tex
+ @rm -rf ${DOC}
+
+
+distclean: clean
+ @rm -f images.pl labels.pl internals.pl
+ @rm -f Makefile version.tex
--- /dev/null
+\newfont{\bighead}{cmr17 at 36pt}
+\parskip 10pt
+\parindent 0pt
+
+\title{\includegraphics{\idir bacula-logo.eps} \\ \bigskip
+ \Huge{Bacula}$^{\normalsize \textregistered}$ \Huge{Miscellaneous Guide}
+ \begin{center}
+ \large{It comes in the night and sucks
+ the essence from your computers. }
+ \end{center}
+}
+
+
+\author{Kern Sibbald}
+\date{\vspace{1.0in}\today \\
+ This manual documents Bacula version \fullversion \\
+ \vspace{0.2in}
+ Copyright {\copyright} 1999-2009, Free Software Foundation Europe
+ e.V. \\
+ Bacula {\textregistered} is a registered trademark of Kern Sibbald.\\
+ \vspace{0.2in}
+ Permission is granted to copy, distribute and/or modify this document under the terms of the
+ GNU Free Documentation License, Version 1.2 published by the Free Software Foundation;
+ with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
+ A copy of the license is included in the section entitled "GNU Free Documentation License".
+}
+
+\maketitle
--- /dev/null
+#
+# Avoid that @VERSION@ and @DATE@ are changed by configure
+# This file is sourced by update_version
+#
+echo "s%@VERSION@%${VERSION}%g" >${out}
+echo "s%@DATE@%${DATE}%g" >>${out}
--- /dev/null
+%%
+%%
+
+\chapter{DVD Volumes}
+\label{_DVDChapterStart}
+\index[general]{DVD Volumes}
+\index[general]{Writing DVDs}
+\index[general]{DVD Writing}
+\index[general]{Volumes!DVD}
+
+Bacula allows you to specify that you want to write to DVD. However,
+this feature is implemented only in version 1.37 or later.
+You may in fact write to DVD+RW, DVD+R, DVD-R, or DVD-RW
+media. The actual process used by Bacula is to first write
+the image to a spool directory, then when the Volume reaches
+a certain size or, at your option, at the end of a Job, Bacula
+will transfer the image from the spool directory to the
+DVD. The actual work of transferring the image is done
+by a script {\bf dvd-handler}, and the heart of that
+script is a program called {\bf growisofs} which allows
+creating or adding to a DVD ISO filesystem.
+
+You must have {\bf dvd+rw-tools} loaded on your system for DVD writing to
+work. Please note that the original {\bf dvd+rw-tools} package does {\bf
+NOT} work with Bacula. You must apply a patch which can be found in the
+{\bf patches} directory of Bacula sources with the name
+{\bf dvd+rw-tools-5.21.4.10.8.bacula.patch} for version 5.21 of the tools,
+or patch {bf dvd+rw-tools-6.1.bacula.patch} if you have version 6.1
+on your system. Unfortunately, this requires you to build the dvd\_rw-tools
+from source.
+
+Note, some Linux distros such as Debian dvd+rw-tools-7.0-4 package already
+have the patch applied, so please check.
+
+The fact that Bacula cannot use the OS to write directly
+to the DVD makes the whole process a bit more error prone than
+writing to a disk or a tape, but nevertheless, it does work if you
+use some care to set it up properly. However, at the current time
+(version 1.39.30 -- 12 December 2006) we still consider this code to be
+BETA quality. As a consequence, please do careful testing before relying
+on DVD backups in production.
+
+The remainder of this chapter explains the various directives that you can
+use to control the DVD writing.
+
+\label{DVDdirectives}
+\section{DVD Specific SD Directives}
+\index[general]{Directives!DVD}
+\index[general]{DVD Specific SD Directives }
+
+The following directives are added to the Storage daemon's
+Device resource.
+
+\begin{description}
+
+\item [Requires Mount = {\it Yes|No}]
+ \index[general]{Requires Mount }
+ You must set this directive to {\bf yes} for DVD-writers, and to {\bf no} for
+ all other devices (tapes/files). This directive indicates if the device
+ requires to be mounted using the {\bf Mount Command}.
+ To be able to write a DVD, the following directives must also be
+ defined: {\bf Mount Point}, {\bf Mount Command}, {\bf Unmount Command} and
+ {\bf Write Part Command}.
+
+\item [Mount Point = {\it directory}]
+ \index[general]{Mount Point}
+ Directory where the device can be mounted.
+
+\item [Mount Command = {\it name-string}]
+ \index[general]{Mount Command}
+ Command that must be executed to mount the device. Although the
+ device is written directly, the mount command is necessary in
+ order to determine the free space left on the DVD. Before the command is
+ executed, \%a is replaced with the Archive Device, and \%m with the Mount
+ Point.
+
+ Most frequently, you will define it as follows:
+
+\footnotesize
+\begin{verbatim}
+ Mount Command = "/bin/mount -t iso9660 -o ro %a %m"
+\end{verbatim}
+\normalsize
+
+However, if you have defined a mount point in /etc/fstab, you might be
+able to use a mount command such as:
+
+\footnotesize
+\begin{verbatim}
+ Mount Command = "/bin/mount /media/dvd"
+\end{verbatim}
+\normalsize
+
+
+\item [Unmount Command = {\it name-string}]
+ \index[general]{Unmount Command}
+ Command that must be executed to unmount the device. Before the command is
+ executed, \%a is replaced with the Archive Device, and \%m with the Mount
+ Point.
+
+ Most frequently, you will define it as follows:
+
+\footnotesize
+\begin{verbatim}
+ Unmount Command = "/bin/umount %m"
+\end{verbatim}
+\normalsize
+
+\item [Write Part Command = {\it name-string}]
+ \index[general]{Write Part Command }
+ Command that must be executed to write a part to the device. Before the
+ command is executed, \%a is replaced with the Archive Device, \%m with the
+ Mount Point, \%e is replaced with 1 if we are writing the first part,
+ and with 0 otherwise, and \%v with the current part filename.
+
+ For a DVD, you will most frequently specify the Bacula supplied {\bf
+ dvd-handler} script as follows:
+
+\footnotesize
+\begin{verbatim}
+ Write Part Command = "/path/dvd-handler %a write %e %v"
+\end{verbatim}
+\normalsize
+
+ Where {\bf /path} is the path to your scripts install directory, and
+ dvd-handler is the Bacula supplied script file.
+ This command will already be present, but commented out,
+ in the default bacula-sd.conf file. To use it, simply remove
+ the comment (\#) symbol.
+
+
+\item [Free Space Command = {\it name-string}]
+ \index[general]{Free Space Command }
+ Command that must be executed to check how much free space is left on the
+ device. Before the command is executed,\%a is replaced with the Archive
+ Device.
+
+ For a DVD, you will most frequently specify the Bacula supplied {\bf
+ dvd-handler} script as follows:
+
+\footnotesize
+\begin{verbatim}
+ Free Space Command = "/path/dvd-handler %a free"
+\end{verbatim}
+\normalsize
+
+ Where {\bf /path} is the path to your scripts install directory, and
+ dvd-handler is the Bacula supplied script file.
+ If you want to specify your own command, please look at the code in
+ dvd-handler to see what output Bacula expects from this command.
+ This command will already be present, but commented out,
+ in the default bacula-sd.conf file. To use it, simply remove
+ the comment (\#) symbol.
+
+ If you do not set it, Bacula will expect there is always free space on the
+ device.
+
+\end{description}
+
+In addition to the directives specified above, you must also
+specify the other standard Device resource directives. Please see the
+sample DVD Device resource in the default bacula-sd.conf file. Be sure
+to specify the raw device name for {\bf Archive Device}. It should
+be a name such as {\bf /dev/cdrom} or {\bf /media/cdrecorder} or
+{\bf /dev/dvd} depending on your system. It will not be a name such
+as {\bf /mnt/cdrom}.
+
+Finally, for {\bf growisofs} to work, it must be able to lock
+a certain amount of memory in RAM. If you have restrictions on
+this function, you may have failures. Under {\bf bash}, you can
+set this with the following command:
+
+\footnotesize
+\begin{verbatim}
+ulimit -l unlimited
+\end{verbatim}
+\normalsize
+
+\section{Edit Codes for DVD Directives}
+\index[general]{Directives!DVD Edit Codes}
+\index[general]{Edit Codes for DVD Directives }
+
+Before submitting the {\bf Mount Command}, {\bf Unmount Command},
+{\bf Write Part Command}, or {\bf Free Space Command} directives
+to the operating system, Bacula performs character substitution of the
+following characters:
+
+\footnotesize
+\begin{verbatim}
+ %% = %
+ %a = Archive device name
+ %e = erase (set if cannot mount and first part)
+ %n = part number
+ %m = mount point
+ %v = last part name (i.e. filename)
+\end{verbatim}
+\normalsize
+
+
+
+\section{DVD Specific Director Directives}
+\index[general]{Directives!DVD}
+\index[general]{DVD Specific Director Directives }
+
+The following directives are added to the Director's Job resource.
+
+\label{WritePartAfterJob}
+\begin{description}
+\item [Write Part After Job = \lt{}yes|no\gt{}]
+ \index[general]{Write Part After Job }
+ If this directive is set to {\bf yes} (default {\bf no}), the
+ Volume written to a temporary spool file for the current Job will
+ be written to the DVD as a new part file
+ will be created after the job is finished.
+
+ It should be set to {\bf yes} when writing to devices that require a mount
+ (for example DVD), so you are sure that the current part, containing
+ this job's data, is written to the device, and that no data is left in
+ the temporary file on the hard disk. However, on some media, like DVD+R
+ and DVD-R, a lot of space (about 10Mb) is lost everytime a part is
+ written. So, if you run several jobs each after another, you could set
+ this directive to {\bf no} for all jobs, except the last one, to avoid
+ wasting too much space, but to ensure that the data is written to the
+ medium when all jobs are finished.
+
+ This directive is ignored for devices other than DVDs.
+\end{description}
+
+
+
+\label{DVDpoints}
+\section{Other Points}
+\index[general]{Points!Other }
+\index[general]{Other Points }
+
+\begin{itemize}
+\item Please be sure that you have any automatic DVD mounting
+ disabled before running Bacula -- this includes auto mounting
+ in /etc/fstab, hotplug, ... If the DVD is automatically
+ mounted by the OS, it will cause problems when Bacula tries
+ to mount/unmount the DVD.
+\item Please be sure that you the directive {\bf Write Part After Job}
+ set to {\bf yes}, otherwise the last part of the data to be
+ written will be left in the DVD spool file and not written to
+ the DVD. The DVD will then be unreadable until this last part
+ is written. If you have a series of jobs that are run one at
+ a time, you can turn this off until the last job is run.
+\item The current code is not designed to have multiple simultaneous
+ jobs writing to the DVD. As a consequence, please ensure that
+ only one DVD backup job runs at any time.
+\item Writing and reading of DVD+RW seems to work quite reliably
+ provided you are using the patched dvd+rw-mediainfo programs.
+ On the other hand, we do not have enough information to ensure
+ that DVD-RW or other forms of DVDs work correctly.
+\item DVD+RW supports only about 1000 overwrites. Every time you
+ mount the filesystem read/write will count as one write. This can
+ add up quickly, so it is best to mount your DVD+RW filesystem read-only.
+ Bacula does not need the DVD to be mounted read-write, since it uses
+ the raw device for writing.
+\item Reformatting DVD+RW 10-20 times can apparently make the medium
+ unusable. Normally you should not have to format or reformat
+ DVD+RW media. If it is necessary, current versions of growisofs will
+ do so automatically.
+\item We have had several problems writing to DVD-RWs (this does NOT
+ concern DVD+RW), because these media have two writing-modes: {\bf
+ Incremental Sequential} and {\bf Restricted Overwrite}. Depending on
+ your device and the media you use, one of these modes may not work
+ correctly (e.g. {\bf Incremental Sequential} does not work with my NEC
+ DVD-writer and Verbatim DVD-RW).
+
+ To retrieve the current mode of a DVD-RW, run:
+\begin{verbatim}
+ dvd+rw-mediainfo /dev/xxx
+\end{verbatim}
+ where you replace xxx with your DVD device name.
+
+ {\bf Mounted Media} line should give you the information.
+
+ To set the device to {\bf Restricted Overwrite} mode, run:
+\begin{verbatim}
+ dvd+rw-format /dev/xxx
+\end{verbatim}
+ If you want to set it back to the default {\bf Incremental Sequential} mode, run:
+\begin{verbatim}
+ dvd+rw-format -blank /dev/xxx
+\end{verbatim}
+
+\item Bacula only accepts to write to blank DVDs. To quickly blank a DVD+/-RW, run
+ this command:
+\begin{verbatim}
+ dd if=/dev/zero bs=1024 count=512 | growisofs -Z /dev/xxx=/dev/fd/0
+\end{verbatim}
+ Then, try to mount the device, if it cannot be mounted, it will be considered
+ as blank by Bacula, if it can be mounted, try a full blank (see below).
+
+\item If you wish to blank completely a DVD+/-RW, use the following:
+\begin{verbatim}
+ growisofs -Z /dev/xxx=/dev/zero
+\end{verbatim}
+ where you replace xxx with your DVD device name. However, note that this
+ blanks the whole DVD, which takes quite a long time (16 minutes on mine).
+\item DVD+RW and DVD-RW support only about 1000 overwrites (i.e. don't use the
+same medium for years if you don't want to have problems...).
+
+To write to the DVD the first time use:
+\begin{verbatim}
+ growisofs -Z /dev/xxx filename
+\end{verbatim}
+
+To add additional files (more parts use):
+
+\begin{verbatim}
+ growisofs -M /dev/xxx filename
+\end{verbatim}
+
+The option {\bf -use-the-force-luke=4gms} was added in growisofs 5.20 to
+override growisofs' behavior of always checking for the 4GB limit.
+Normally, this option is recommended for all Linux 2.6.8 kernels or
+greater, since these newer kernels can handle writing more than 4GB.
+See below for more details on this subject.
+
+\item For more information about DVD writing, please look at the
+\elink{dvd+rw-tools homepage}{http://fy.chalmers.se/~appro/linux/DVD+RW/}.
+
+\item According to bug \#912, bscan cannot read multi-volume DVDs. This is
+on our TODO list, but unless someone submits a patch it is not likely to be
+done any time in the near future. (9 Sept 2007).
+
+\end{itemize}
--- /dev/null
+% TODO: maybe get rid of centering
+
+\chapter{GNU Free Documentation License}
+\index[general]{GNU Free Documentation License}
+\index[general]{License!GNU Free Documentation}
+
+\label{label_fdl}
+
+ \begin{center}
+
+ Version 1.2, November 2002
+
+
+ Copyright \copyright 2000,2001,2002 Free Software Foundation, Inc.
+
+ \bigskip
+
+ 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+ \bigskip
+
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+\end{center}
+
+
+\begin{center}
+{\bf\large Preamble}
+\end{center}
+
+The purpose of this License is to make a manual, textbook, or other
+functional and useful document "free" in the sense of freedom: to
+assure everyone the effective freedom to copy and redistribute it,
+with or without modifying it, either commercially or noncommercially.
+Secondarily, this License preserves for the author and publisher a way
+to get credit for their work, while not being considered responsible
+for modifications made by others.
+
+This License is a kind of "copyleft", which means that derivative
+works of the document must themselves be free in the same sense. It
+complements the GNU General Public License, which is a copyleft
+license designed for free software.
+
+We have designed this License in order to use it for manuals for free
+software, because free software needs free documentation: a free
+program should come with manuals providing the same freedoms that the
+software does. But this License is not limited to software manuals;
+it can be used for any textual work, regardless of subject matter or
+whether it is published as a printed book. We recommend this License
+principally for works whose purpose is instruction or reference.
+
+
+\begin{center}
+{\Large\bf 1. APPLICABILITY AND DEFINITIONS}
+\end{center}
+
+This License applies to any manual or other work, in any medium, that
+contains a notice placed by the copyright holder saying it can be
+distributed under the terms of this License. Such a notice grants a
+world-wide, royalty-free license, unlimited in duration, to use that
+work under the conditions stated herein. The \textbf{"Document"}, below,
+refers to any such manual or work. Any member of the public is a
+licensee, and is addressed as \textbf{"you"}. You accept the license if you
+copy, modify or distribute the work in a way requiring permission
+under copyright law.
+
+A \textbf{"Modified Version"} of the Document means any work containing the
+Document or a portion of it, either copied verbatim, or with
+modifications and/or translated into another language.
+
+A \textbf{"Secondary Section"} is a named appendix or a front-matter section of
+the Document that deals exclusively with the relationship of the
+publishers or authors of the Document to the Document's overall subject
+(or to related matters) and contains nothing that could fall directly
+within that overall subject. (Thus, if the Document is in part a
+textbook of mathematics, a Secondary Section may not explain any
+mathematics.) The relationship could be a matter of historical
+connection with the subject or with related matters, or of legal,
+commercial, philosophical, ethical or political position regarding
+them.
+
+The \textbf{"Invariant Sections"} are certain Secondary Sections whose titles
+are designated, as being those of Invariant Sections, in the notice
+that says that the Document is released under this License. If a
+section does not fit the above definition of Secondary then it is not
+allowed to be designated as Invariant. The Document may contain zero
+Invariant Sections. If the Document does not identify any Invariant
+Sections then there are none.
+
+The \textbf{"Cover Texts"} are certain short passages of text that are listed,
+as Front-Cover Texts or Back-Cover Texts, in the notice that says that
+the Document is released under this License. A Front-Cover Text may
+be at most 5 words, and a Back-Cover Text may be at most 25 words.
+
+A \textbf{"Transparent"} copy of the Document means a machine-readable copy,
+represented in a format whose specification is available to the
+general public, that is suitable for revising the document
+straightforwardly with generic text editors or (for images composed of
+pixels) generic paint programs or (for drawings) some widely available
+drawing editor, and that is suitable for input to text formatters or
+for automatic translation to a variety of formats suitable for input
+to text formatters. A copy made in an otherwise Transparent file
+format whose markup, or absence of markup, has been arranged to thwart
+or discourage subsequent modification by readers is not Transparent.
+An image format is not Transparent if used for any substantial amount
+of text. A copy that is not "Transparent" is called \textbf{"Opaque"}.
+
+Examples of suitable formats for Transparent copies include plain
+ASCII without markup, Texinfo input format, LaTeX input format, SGML
+or XML using a publicly available DTD, and standard-conforming simple
+HTML, PostScript or PDF designed for human modification. Examples of
+transparent image formats include PNG, XCF and JPG. Opaque formats
+include proprietary formats that can be read and edited only by
+proprietary word processors, SGML or XML for which the DTD and/or
+processing tools are not generally available, and the
+machine-generated HTML, PostScript or PDF produced by some word
+processors for output purposes only.
+
+The \textbf{"Title Page"} means, for a printed book, the title page itself,
+plus such following pages as are needed to hold, legibly, the material
+this License requires to appear in the title page. For works in
+formats which do not have any title page as such, "Title Page" means
+the text near the most prominent appearance of the work's title,
+preceding the beginning of the body of the text.
+
+A section \textbf{"Entitled XYZ"} means a named subunit of the Document whose
+title either is precisely XYZ or contains XYZ in parentheses following
+text that translates XYZ in another language. (Here XYZ stands for a
+specific section name mentioned below, such as \textbf{"Acknowledgements"},
+\textbf{"Dedications"}, \textbf{"Endorsements"}, or \textbf{"History"}.)
+To \textbf{"Preserve the Title"}
+of such a section when you modify the Document means that it remains a
+section "Entitled XYZ" according to this definition.
+
+The Document may include Warranty Disclaimers next to the notice which
+states that this License applies to the Document. These Warranty
+Disclaimers are considered to be included by reference in this
+License, but only as regards disclaiming warranties: any other
+implication that these Warranty Disclaimers may have is void and has
+no effect on the meaning of this License.
+
+
+\begin{center}
+{\Large\bf 2. VERBATIM COPYING}
+\end{center}
+
+You may copy and distribute the Document in any medium, either
+commercially or noncommercially, provided that this License, the
+copyright notices, and the license notice saying this License applies
+to the Document are reproduced in all copies, and that you add no other
+conditions whatsoever to those of this License. You may not use
+technical measures to obstruct or control the reading or further
+copying of the copies you make or distribute. However, you may accept
+compensation in exchange for copies. If you distribute a large enough
+number of copies you must also follow the conditions in section 3.
+
+You may also lend copies, under the same conditions stated above, and
+you may publicly display copies.
+
+
+\begin{center}
+{\Large\bf 3. COPYING IN QUANTITY}
+\end{center}
+
+
+If you publish printed copies (or copies in media that commonly have
+printed covers) of the Document, numbering more than 100, and the
+Document's license notice requires Cover Texts, you must enclose the
+copies in covers that carry, clearly and legibly, all these Cover
+Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on
+the back cover. Both covers must also clearly and legibly identify
+you as the publisher of these copies. The front cover must present
+the full title with all words of the title equally prominent and
+visible. You may add other material on the covers in addition.
+Copying with changes limited to the covers, as long as they preserve
+the title of the Document and satisfy these conditions, can be treated
+as verbatim copying in other respects.
+
+If the required texts for either cover are too voluminous to fit
+legibly, you should put the first ones listed (as many as fit
+reasonably) on the actual cover, and continue the rest onto adjacent
+pages.
+
+If you publish or distribute Opaque copies of the Document numbering
+more than 100, you must either include a machine-readable Transparent
+copy along with each Opaque copy, or state in or with each Opaque copy
+a computer-network location from which the general network-using
+public has access to download using public-standard network protocols
+a complete Transparent copy of the Document, free of added material.
+If you use the latter option, you must take reasonably prudent steps,
+when you begin distribution of Opaque copies in quantity, to ensure
+that this Transparent copy will remain thus accessible at the stated
+location until at least one year after the last time you distribute an
+Opaque copy (directly or through your agents or retailers) of that
+edition to the public.
+
+It is requested, but not required, that you contact the authors of the
+Document well before redistributing any large number of copies, to give
+them a chance to provide you with an updated version of the Document.
+
+
+\begin{center}
+{\Large\bf 4. MODIFICATIONS}
+\end{center}
+
+You may copy and distribute a Modified Version of the Document under
+the conditions of sections 2 and 3 above, provided that you release
+the Modified Version under precisely this License, with the Modified
+Version filling the role of the Document, thus licensing distribution
+and modification of the Modified Version to whoever possesses a copy
+of it. In addition, you must do these things in the Modified Version:
+
+\begin{itemize}
+\item[A.]
+ Use in the Title Page (and on the covers, if any) a title distinct
+ from that of the Document, and from those of previous versions
+ (which should, if there were any, be listed in the History section
+ of the Document). You may use the same title as a previous version
+ if the original publisher of that version gives permission.
+
+\item[B.]
+ List on the Title Page, as authors, one or more persons or entities
+ responsible for authorship of the modifications in the Modified
+ Version, together with at least five of the principal authors of the
+ Document (all of its principal authors, if it has fewer than five),
+ unless they release you from this requirement.
+
+\item[C.]
+ State on the Title page the name of the publisher of the
+ Modified Version, as the publisher.
+
+\item[D.]
+ Preserve all the copyright notices of the Document.
+
+\item[E.]
+ Add an appropriate copyright notice for your modifications
+ adjacent to the other copyright notices.
+
+\item[F.]
+ Include, immediately after the copyright notices, a license notice
+ giving the public permission to use the Modified Version under the
+ terms of this License, in the form shown in the Addendum below.
+
+\item[G.]
+ Preserve in that license notice the full lists of Invariant Sections
+ and required Cover Texts given in the Document's license notice.
+
+\item[H.]
+ Include an unaltered copy of this License.
+
+\item[I.]
+ Preserve the section Entitled "History", Preserve its Title, and add
+ to it an item stating at least the title, year, new authors, and
+ publisher of the Modified Version as given on the Title Page. If
+ there is no section Entitled "History" in the Document, create one
+ stating the title, year, authors, and publisher of the Document as
+ given on its Title Page, then add an item describing the Modified
+ Version as stated in the previous sentence.
+
+\item[J.]
+ Preserve the network location, if any, given in the Document for
+ public access to a Transparent copy of the Document, and likewise
+ the network locations given in the Document for previous versions
+ it was based on. These may be placed in the "History" section.
+ You may omit a network location for a work that was published at
+ least four years before the Document itself, or if the original
+ publisher of the version it refers to gives permission.
+
+\item[K.]
+ For any section Entitled "Acknowledgements" or "Dedications",
+ Preserve the Title of the section, and preserve in the section all
+ the substance and tone of each of the contributor acknowledgements
+ and/or dedications given therein.
+
+\item[L.]
+ Preserve all the Invariant Sections of the Document,
+ unaltered in their text and in their titles. Section numbers
+ or the equivalent are not considered part of the section titles.
+
+\item[M.]
+ Delete any section Entitled "Endorsements". Such a section
+ may not be included in the Modified Version.
+
+\item[N.]
+ Do not retitle any existing section to be Entitled "Endorsements"
+ or to conflict in title with any Invariant Section.
+
+\item[O.]
+ Preserve any Warranty Disclaimers.
+\end{itemize}
+
+If the Modified Version includes new front-matter sections or
+appendices that qualify as Secondary Sections and contain no material
+copied from the Document, you may at your option designate some or all
+of these sections as invariant. To do this, add their titles to the
+list of Invariant Sections in the Modified Version's license notice.
+These titles must be distinct from any other section titles.
+
+You may add a section Entitled "Endorsements", provided it contains
+nothing but endorsements of your Modified Version by various
+parties--for example, statements of peer review or that the text has
+been approved by an organization as the authoritative definition of a
+standard.
+
+You may add a passage of up to five words as a Front-Cover Text, and a
+passage of up to 25 words as a Back-Cover Text, to the end of the list
+of Cover Texts in the Modified Version. Only one passage of
+Front-Cover Text and one of Back-Cover Text may be added by (or
+through arrangements made by) any one entity. If the Document already
+includes a cover text for the same cover, previously added by you or
+by arrangement made by the same entity you are acting on behalf of,
+you may not add another; but you may replace the old one, on explicit
+permission from the previous publisher that added the old one.
+
+The author(s) and publisher(s) of the Document do not by this License
+give permission to use their names for publicity for or to assert or
+imply endorsement of any Modified Version.
+
+
+\begin{center}
+{\Large\bf 5. COMBINING DOCUMENTS}
+\end{center}
+
+
+You may combine the Document with other documents released under this
+License, under the terms defined in section 4 above for modified
+versions, provided that you include in the combination all of the
+Invariant Sections of all of the original documents, unmodified, and
+list them all as Invariant Sections of your combined work in its
+license notice, and that you preserve all their Warranty Disclaimers.
+
+The combined work need only contain one copy of this License, and
+multiple identical Invariant Sections may be replaced with a single
+copy. If there are multiple Invariant Sections with the same name but
+different contents, make the title of each such section unique by
+adding at the end of it, in parentheses, the name of the original
+author or publisher of that section if known, or else a unique number.
+Make the same adjustment to the section titles in the list of
+Invariant Sections in the license notice of the combined work.
+
+In the combination, you must combine any sections Entitled "History"
+in the various original documents, forming one section Entitled
+"History"; likewise combine any sections Entitled "Acknowledgements",
+and any sections Entitled "Dedications". You must delete all sections
+Entitled "Endorsements".
+
+\begin{center}
+{\Large\bf 6. COLLECTIONS OF DOCUMENTS}
+\end{center}
+
+You may make a collection consisting of the Document and other documents
+released under this License, and replace the individual copies of this
+License in the various documents with a single copy that is included in
+the collection, provided that you follow the rules of this License for
+verbatim copying of each of the documents in all other respects.
+
+You may extract a single document from such a collection, and distribute
+it individually under this License, provided you insert a copy of this
+License into the extracted document, and follow this License in all
+other respects regarding verbatim copying of that document.
+
+
+\begin{center}
+{\Large\bf 7. AGGREGATION WITH INDEPENDENT WORKS}
+\end{center}
+
+
+A compilation of the Document or its derivatives with other separate
+and independent documents or works, in or on a volume of a storage or
+distribution medium, is called an "aggregate" if the copyright
+resulting from the compilation is not used to limit the legal rights
+of the compilation's users beyond what the individual works permit.
+When the Document is included in an aggregate, this License does not
+apply to the other works in the aggregate which are not themselves
+derivative works of the Document.
+
+If the Cover Text requirement of section 3 is applicable to these
+copies of the Document, then if the Document is less than one half of
+the entire aggregate, the Document's Cover Texts may be placed on
+covers that bracket the Document within the aggregate, or the
+electronic equivalent of covers if the Document is in electronic form.
+Otherwise they must appear on printed covers that bracket the whole
+aggregate.
+
+
+\begin{center}
+{\Large\bf 8. TRANSLATION}
+\end{center}
+
+
+Translation is considered a kind of modification, so you may
+distribute translations of the Document under the terms of section 4.
+Replacing Invariant Sections with translations requires special
+permission from their copyright holders, but you may include
+translations of some or all Invariant Sections in addition to the
+original versions of these Invariant Sections. You may include a
+translation of this License, and all the license notices in the
+Document, and any Warranty Disclaimers, provided that you also include
+the original English version of this License and the original versions
+of those notices and disclaimers. In case of a disagreement between
+the translation and the original version of this License or a notice
+or disclaimer, the original version will prevail.
+
+If a section in the Document is Entitled "Acknowledgements",
+"Dedications", or "History", the requirement (section 4) to Preserve
+its Title (section 1) will typically require changing the actual
+title.
+
+
+\begin{center}
+{\Large\bf 9. TERMINATION}
+\end{center}
+
+
+You may not copy, modify, sublicense, or distribute the Document except
+as expressly provided for under this License. Any other attempt to
+copy, modify, sublicense or distribute the Document is void, and will
+automatically terminate your rights under this License. However,
+parties who have received copies, or rights, from you under this
+License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+
+\begin{center}
+{\Large\bf 10. FUTURE REVISIONS OF THIS LICENSE}
+\end{center}
+
+
+The Free Software Foundation may publish new, revised versions
+of the GNU Free Documentation License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns. See
+http://www.gnu.org/copyleft/.
+
+Each version of the License is given a distinguishing version number.
+If the Document specifies that a particular numbered version of this
+License "or any later version" applies to it, you have the option of
+following the terms and conditions either of that specified version or
+of any later version that has been published (not as a draft) by the
+Free Software Foundation. If the Document does not specify a version
+number of this License, you may choose any version ever published (not
+as a draft) by the Free Software Foundation.
+
+
+\begin{center}
+{\Large\bf ADDENDUM: How to use this License for your documents}
+% TODO: this is too long for table of contents
+\end{center}
+
+To use this License in a document you have written, include a copy of
+the License in the document and put the following copyright and
+license notices just after the title page:
+
+\bigskip
+\begin{quote}
+ Copyright \copyright YEAR YOUR NAME.
+ Permission is granted to copy, distribute and/or modify this document
+ under the terms of the GNU Free Documentation License, Version 1.2
+ or any later version published by the Free Software Foundation;
+ with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
+ A copy of the license is included in the section entitled "GNU
+ Free Documentation License".
+\end{quote}
+\bigskip
+
+If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
+replace the "with...Texts." line with this:
+
+\bigskip
+\begin{quote}
+ with the Invariant Sections being LIST THEIR TITLES, with the
+ Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.
+\end{quote}
+\bigskip
+
+If you have Invariant Sections without Cover Texts, or some other
+combination of the three, merge those two alternatives to suit the
+situation.
+
+If your document contains nontrivial examples of program code, we
+recommend releasing these examples in parallel under your choice of
+free software license, such as the GNU General Public License,
+to permit their use in free software.
+
+%---------------------------------------------------------------------
--- /dev/null
+%%
+%%
+
+\section*{GNU General Public License}
+\label{GplChapter}
+\index[general]{GNU General Public License }
+\index[general]{License!GNU General Public }
+
+\elink{image of a Philosophical
+GNU}{http://www.gnu.org/graphics/philosophicalgnu.html}
+
+\begin{itemize}
+\item
+ \elink{What to do if you see a possible GPL
+ violation}{http://www.gnu.org/copyleft/gpl-violation.html}
+\item
+ \elink{Translations of the
+ GPL}{http://www.gnu.org/copyleft/copyleft.html\#translations}
+\end{itemize}
+
+
+\section{Table of Contents}
+\index[general]{Table of Contents }
+\index[general]{Contents!Table of }
+
+\begin{itemize}
+\item
+ \label{TOC1}
+ \ilink{GNU GENERAL PUBLIC LICENSE}{SEC1}
+
+\begin{itemize}
+\item
+ \label{TOC2}
+ \ilink{Preamble}{SEC2}
+\item
+ \label{TOC3}
+ \ilink{TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND
+MODIFICATION}{SEC3}
+\item
+ \label{TOC4}
+ \ilink{How to Apply These Terms to Your New Programs}{SEC4}
+\end{itemize}
+
+\end{itemize}
+
+
+\section{GNU GENERAL PUBLIC LICENSE}
+\label{SEC1}
+\index[general]{GNU GENERAL PUBLIC LICENSE }
+\index[general]{LICENSE!GNU GENERAL PUBLIC }
+
+Version 2, June 1991
+
+\footnotesize
+\begin{verbatim}
+Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+\end{verbatim}
+\normalsize
+
+\section{Preamble}
+\label{SEC2}
+\index[general]{Preamble }
+
+The licenses for most software are designed to take away your freedom to share
+and change it. By contrast, the GNU General Public License is intended to
+guarantee your freedom to share and change free software\verb:--:to make sure the
+software is free for all its users. This General Public License applies to
+most of the Free Software Foundation's software and to any other program whose
+authors commit to using it. (Some other Free Software Foundation software is
+covered by the GNU Library General Public License instead.) You can apply it
+to your programs, too.
+
+When we speak of free software, we are referring to freedom, not price. Our
+General Public Licenses are designed to make sure that you have the freedom to
+distribute copies of free software (and charge for this service if you wish),
+that you receive source code or can get it if you want it, that you can change
+the software or use pieces of it in new free programs; and that you know you
+can do these things.
+
+To protect your rights, we need to make restrictions that forbid anyone to
+deny you these rights or to ask you to surrender the rights. These
+restrictions translate to certain responsibilities for you if you distribute
+copies of the software, or if you modify it.
+
+For example, if you distribute copies of such a program, whether gratis or for
+a fee, you must give the recipients all the rights that you have. You must
+make sure that they, too, receive or can get the source code. And you must
+show them these terms so they know their rights.
+
+We protect your rights with two steps: (1) copyright the software, and (2)
+offer you this license which gives you legal permission to copy, distribute
+and/or modify the software.
+
+Also, for each author's protection and ours, we want to make certain that
+everyone understands that there is no warranty for this free software. If the
+software is modified by someone else and passed on, we want its recipients to
+know that what they have is not the original, so that any problems introduced
+by others will not reflect on the original authors' reputations.
+
+Finally, any free program is threatened constantly by software patents. We
+wish to avoid the danger that redistributors of a free program will
+individually obtain patent licenses, in effect making the program proprietary.
+To prevent this, we have made it clear that any patent must be licensed for
+everyone's free use or not licensed at all.
+
+The precise terms and conditions for copying, distribution and modification
+follow.
+
+\section{TERMS AND CONDITIONS}
+\label{SEC3}
+\index[general]{CONDITIONS!TERMS AND }
+\index[general]{TERMS AND CONDITIONS }
+
+TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+{\bf 0.} This License applies to any program or other work which contains a
+notice placed by the copyright holder saying it may be distributed under the
+terms of this General Public License. The "Program", below, refers to any
+such program or work, and a "work based on the Program" means either the
+Program or any derivative work under copyright law: that is to say, a work
+containing the Program or a portion of it, either verbatim or with
+modifications and/or translated into another language. (Hereinafter,
+translation is included without limitation in the term "modification".) Each
+licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not covered
+by this License; they are outside its scope. The act of running the Program is
+not restricted, and the output from the Program is covered only if its
+contents constitute a work based on the Program (independent of having been
+made by running the Program). Whether that is true depends on what the Program
+does.
+
+{\bf 1.} You may copy and distribute verbatim copies of the Program's source
+code as you receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice and
+disclaimer of warranty; keep intact all the notices that refer to this License
+and to the absence of any warranty; and give any other recipients of the
+Program a copy of this License along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and you may
+at your option offer warranty protection in exchange for a fee.
+
+{\bf 2.} You may modify your copy or copies of the Program or any portion of
+it, thus forming a work based on the Program, and copy and distribute such
+modifications or work under the terms of Section 1 above, provided that you
+also meet all of these conditions:
+
+\begin{itemize}
+\item {\bf a)} You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+\item {\bf b)} You must cause any work that you distribute or publish, that
+ in whole or in part contains or is derived from the Program or any part
+ thereof, to be licensed as a whole at no charge to all third parties under
+ the terms of this License.
+
+\item {\bf c)} If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such interactive use in
+ the most ordinary way, to print or display an announcement including an
+ appropriate copyright notice and a notice that there is no warranty (or else,
+ saying that you provide a warranty) and that users may redistribute the
+ program under these conditions, and telling the user how to view a copy of
+ this License. (Exception: if the Program itself is interactive but does not
+ normally print such an announcement, your work based on the Program is not
+ required to print an announcement.)
+\end{itemize}
+
+These requirements apply to the modified work as a whole. If identifiable
+sections of that work are not derived from the Program, and can be reasonably
+considered independent and separate works in themselves, then this License,
+and its terms, do not apply to those sections when you distribute them as
+separate works. But when you distribute the same sections as part of a whole
+which is a work based on the Program, the distribution of the whole must be on
+the terms of this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest your
+rights to work written entirely by you; rather, the intent is to exercise the
+right to control the distribution of derivative or collective works based on
+the Program.
+
+In addition, mere aggregation of another work not based on the Program with
+the Program (or with a work based on the Program) on a volume of a storage or
+distribution medium does not bring the other work under the scope of this
+License.
+
+{\bf 3.} You may copy and distribute the Program (or a work based on it, under
+Section 2) in object code or executable form under the terms of Sections 1 and
+2 above provided that you also do one of the following:
+
+\begin{itemize}
+\item {\bf a)} Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections 1 and 2
+ above on a medium customarily used for software interchange; or,
+
+\item {\bf b)} Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your cost of
+ physically performing source distribution, a complete machine-readable copy of
+ the corresponding source code, to be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+\item {\bf c)} Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is allowed only
+ for noncommercial distribution and only if you received the program in object
+ code or executable form with such an offer, in accord with Subsection b
+ above.)
+\end{itemize}
+
+The source code for a work means the preferred form of the work for making
+modifications to it. For an executable work, complete source code means all
+the source code for all modules it contains, plus any associated interface
+definition files, plus the scripts used to control compilation and
+installation of the executable. However, as a special exception, the source
+code distributed need not include anything that is normally distributed (in
+either source or binary form) with the major components (compiler, kernel, and
+so on) of the operating system on which the executable runs, unless that
+component itself accompanies the executable.
+
+If distribution of executable or object code is made by offering access to
+copy from a designated place, then offering equivalent access to copy the
+source code from the same place counts as distribution of the source code,
+even though third parties are not compelled to copy the source along with the
+object code.
+
+{\bf 4.} You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt otherwise to
+copy, modify, sublicense or distribute the Program is void, and will
+automatically terminate your rights under this License. However, parties who
+have received copies, or rights, from you under this License will not have
+their licenses terminated so long as such parties remain in full compliance.
+
+{\bf 5.} You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or distribute
+the Program or its derivative works. These actions are prohibited by law if
+you do not accept this License. Therefore, by modifying or distributing the
+Program (or any work based on the Program), you indicate your acceptance of
+this License to do so, and all its terms and conditions for copying,
+distributing or modifying the Program or works based on it.
+
+{\bf 6.} Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the original
+licensor to copy, distribute or modify the Program subject to these terms and
+conditions. You may not impose any further restrictions on the recipients'
+exercise of the rights granted herein. You are not responsible for enforcing
+compliance by third parties to this License.
+
+{\bf 7.} If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or otherwise)
+that contradict the conditions of this License, they do not excuse you from
+the conditions of this License. If you cannot distribute so as to satisfy
+simultaneously your obligations under this License and any other pertinent
+obligations, then as a consequence you may not distribute the Program at all.
+For example, if a patent license would not permit royalty-free redistribution
+of the Program by all those who receive copies directly or indirectly through
+you, then the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under any
+particular circumstance, the balance of the section is intended to apply and
+the section as a whole is intended to apply in other circumstances.
+
+It is not the purpose of this section to induce you to infringe any patents or
+other property right claims or to contest validity of any such claims; this
+section has the sole purpose of protecting the integrity of the free software
+distribution system, which is implemented by public license practices. Many
+people have made generous contributions to the wide range of software
+distributed through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing to
+distribute software through any other system and a licensee cannot impose that
+choice.
+
+This section is intended to make thoroughly clear what is believed to be a
+consequence of the rest of this License.
+
+{\bf 8.} If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the original
+copyright holder who places the Program under this License may add an explicit
+geographical distribution limitation excluding those countries, so that
+distribution is permitted only in or among countries not thus excluded. In
+such case, this License incorporates the limitation as if written in the body
+of this License.
+
+{\bf 9.} The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will be
+similar in spirit to the present version, but may differ in detail to address
+new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any later
+version", you have the option of following the terms and conditions either of
+that version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of this License,
+you may choose any version ever published by the Free Software Foundation.
+
+{\bf 10.} If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author to
+ask for permission. For software which is copyrighted by the Free Software
+Foundation, write to the Free Software Foundation; we sometimes make
+exceptions for this. Our decision will be guided by the two goals of
+preserving the free status of all derivatives of our free software and of
+promoting the sharing and reuse of software generally.
+
+{\bf NO WARRANTY}
+
+{\bf 11.} BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE
+THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR
+IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO
+THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM
+PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+CORRECTION.
+
+{\bf 12.} IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO
+LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR
+THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+END OF TERMS AND CONDITIONS
+
+\section{How to Apply These Terms to Your New Programs}
+\label{SEC4}
+\index[general]{Programs!How to Apply These Terms to Your New }
+\index[general]{How to Apply These Terms to Your New Programs }
+
+If you develop a new program, and you want it to be of the greatest possible
+use to the public, the best way to achieve this is to make it free software
+which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach
+them to the start of each source file to most effectively convey the exclusion
+of warranty; and each file should have at least the "copyright" line and a
+pointer to where the full notice is found.
+
+\footnotesize
+\begin{verbatim}
+{\em one line to give the program's name and an idea of what it does.}
+Copyright (C) {\em yyyy} {\em name of author}
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+02110-1301 USA
+\end{verbatim}
+\normalsize
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this when it
+starts in an interactive mode:
+
+\footnotesize
+\begin{verbatim}
+Gnomovision version 69, Copyright (C) {\em year} {\em name of author}
+Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
+type `show w'. This is free software, and you are welcome
+to redistribute it under certain conditions; type `show c'
+for details.
+\end{verbatim}
+\normalsize
+
+The hypothetical commands {\tt `show w'} and {\tt `show c'} should show the
+appropriate parts of the General Public License. Of course, the commands you
+use may be called something other than {\tt `show w'} and {\tt `show c'}; they
+could even be mouse-clicks or menu items\verb:--:whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+\footnotesize
+\begin{verbatim}
+Yoyodyne, Inc., hereby disclaims all copyright
+interest in the program `Gnomovision'
+(which makes passes at compilers) written
+by James Hacker.
+{\em signature of Ty Coon}, 1 April 1989
+Ty Coon, President of Vice
+\end{verbatim}
+\normalsize
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General Public
+License instead of this License.
+Return to
+\elink{GNU's home page}{http://www.gnu.org/home.html}.
+
+FSF \& GNU inquiries \& questions to
+\elink{gnu@gnu.org}{mailto:gnu@gnu.org}. Other
+\elink{ways to contact}{http://www.gnu.org/home.html\#ContactInfo} the FSF.
+
+Comments on these web pages to
+\elink{webmasters@www.gnu.org}{mailto:webmasters@www.gnu.org}, send other
+questions to
+\elink{gnu@gnu.org}{mailto:gnu@gnu.org}.
+
+Copyright notice above.
+Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+Boston, MA 02110-1301 USA
+
+Updated: 3 Jan 2000 rms
--- /dev/null
+# This file serves as a place to put initialization code and constants to
+# affect the behavior of latex2html for generating the bacula manuals.
+
+# $LINKPOINT specifies what filename to use to link to when creating
+# index.html. Not that this is a hard link.
+$LINKPOINT='"$OVERALL_TITLE"';
+
+
+# The following must be the last line of this file.
+1;
--- /dev/null
+%%
+%%
+
+\section*{GNU Lesser General Public License}
+\label{LesserChapter}
+\index[general]{GNU Lesser General Public License }
+\index[general]{License!GNU Lesser General Public }
+
+\elink{image of a Philosophical GNU}
+{\url{http://www.gnu.org/graphics/philosophicalgnu.html}} [
+\elink{English}{\url{http://www.gnu.org/copyleft/lesser.html}} |
+\elink{Japanese}{\url{http://www.gnu.org/copyleft/lesser.ja.html}} ]
+
+\begin{itemize}
+\item
+ \elink{Why you shouldn't use the Lesser GPL for your next
+ library}{\url{http://www.gnu.org/philosophy/why-not-lgpl.html}}
+\item
+ \elink{What to do if you see a possible LGPL
+ violation}{\url{http://www.gnu.org/copyleft/gpl-violation.html}}
+\item
+ \elink{Translations of the LGPL}
+{\url{http://www.gnu.org/copyleft/copyleft.html\#translationsLGPL}}
+\item The GNU Lesser General Public License as a
+ \elink{text file}{\url{http://www.gnu.org/copyleft/lesser.txt}}
+\item The GNU Lesser General Public License as a
+ \elink{Texinfo}{\url{http://www.gnu.org/copyleft/lesser.texi}} file
+ \end{itemize}
+
+
+This GNU Lesser General Public License counts as the successor of the GNU
+Library General Public License. For an explanation of why this change was
+necessary, read the
+\elink{Why you shouldn't use the Lesser GPL for your next
+library}{\url{http://www.gnu.org/philosophy/why-not-lgpl.html}} article.
+
+\section{Table of Contents}
+\index[general]{Table of Contents }
+\index[general]{Contents!Table of }
+
+\begin{itemize}
+\item
+ \label{TOC12}
+ \ilink{GNU LESSER GENERAL PUBLIC LICENSE}{SEC12}
+
+\begin{itemize}
+\item
+ \label{TOC23}
+ \ilink{Preamble}{SEC23}
+\item
+ \label{TOC34}
+ \ilink{TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND
+MODIFICATION}{SEC34}
+\item
+ \label{TOC45}
+ \ilink{How to Apply These Terms to Your New Libraries}{SEC45}
+\end{itemize}
+
+\end{itemize}
+
+
+\section{GNU LESSER GENERAL PUBLIC LICENSE}
+\label{SEC12}
+\index[general]{LICENSE!GNU LESSER GENERAL PUBLIC }
+\index[general]{GNU LESSER GENERAL PUBLIC LICENSE }
+
+Version 2.1, February 1999
+
+\footnotesize
+\begin{verbatim}
+Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+[This is the first released version of the Lesser GPL. It also counts
+ as the successor of the GNU Library Public License, version 2, hence
+ the version number 2.1.]
+\end{verbatim}
+\normalsize
+
+\section{Preamble}
+\label{SEC23}
+\index[general]{Preamble }
+
+The licenses for most software are designed to take away your freedom to share
+and change it. By contrast, the GNU General Public Licenses are intended to
+guarantee your freedom to share and change free software\verb:--:to make sure the
+software is free for all its users.
+
+This license, the Lesser General Public License, applies to some specially
+designated software packages\verb:--:typically libraries\verb:--:of the Free Software
+Foundation and other authors who decide to use it. You can use it too, but we
+suggest you first think carefully about whether this license or the ordinary
+General Public License is the better strategy to use in any particular case,
+based on the explanations below.
+
+When we speak of free software, we are referring to freedom of use, not price.
+Our General Public Licenses are designed to make sure that you have the
+freedom to distribute copies of free software (and charge for this service if
+you wish); that you receive source code or can get it if you want it; that you
+can change the software and use pieces of it in new free programs; and that
+you are informed that you can do these things.
+
+To protect your rights, we need to make restrictions that forbid distributors
+to deny you these rights or to ask you to surrender these rights. These
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+DAMAGES.
+
+END OF TERMS AND CONDITIONS
+
+\section{How to Apply These Terms to Your New Libraries}
+\label{SEC45}
+\index[general]{Libraries!How to Apply These Terms to Your New }
+\index[general]{How to Apply These Terms to Your New Libraries }
+
+
+If you develop a new library, and you want it to be of the greatest possible
+use to the public, we recommend making it free software that everyone can
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+
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+
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+\begin{verbatim}
+{\it one line to give the library's name and an idea of what it does.}
+Copyright (C) {\it year} {\it name of author}
+This library is free software; you can redistribute it and/or
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+You should have received a copy of the GNU Lesser General Public
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+USA
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+\normalsize
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
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+\begin{verbatim}
+Yoyodyne, Inc., hereby disclaims all copyright interest in
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+by James Random Hacker.
+{\it signature of Ty Coon}, 1 April 1990
+Ty Coon, President of Vice
+\end{verbatim}
+\normalsize
+
+That's all there is to it!
+Return to
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+
+FSF \& GNU inquiries \& questions to
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+
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+
+Copyright notice above.
+Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+Boston, MA 02110-1301 USA
+USA
+
+Updated: 27 Nov 2000 paulv
--- /dev/null
+%%
+%%
+
+\chapter{Bacula Copyright, Trademark, and Licenses}
+\label{LicenseChapter}
+\index[general]{Licenses!Bacula Copyright Trademark}
+\index[general]{Bacula Copyright, Trademark, and Licenses}
+
+There are a number of different licenses that are used in Bacula.
+If you have a printed copy of this manual, the details of each of
+the licenses referred to in this chapter can be found in the
+online version of the manual at
+\elink{http://www.bacula.org}{\url{http://www.bacula.org}}.
+
+\section{FDL}
+\index[general]{FDL }
+
+The GNU Free Documentation License (FDL) is used for this manual,
+which is a free and open license. This means that you may freely
+reproduce it and even make changes to it. However, rather than
+distribute your own version of this manual, we would much prefer
+if you would send any corrections or changes to the Bacula project.
+
+The most recent version of the manual can always be found online
+at \elink{http://www.bacula.org}{\url{http://www.bacula.org}}.
+
+\section{GPL}
+\index[general]{GPL }
+
+The vast bulk of the source code is released under the
+\ilink{GNU General Public License version 2.}{GplChapter}.
+
+Most of this code is copyrighted: Copyright \copyright 2000-2009
+Free Software Foundation Europe e.V.
+
+Portions may be copyrighted by other people. These files are released
+under different licenses which are compatible with the Bacula GPLv2 license.
+
+\section{LGPL}
+\index[general]{LGPL }
+
+Some of the Bacula library source code is released under the
+\ilink{GNU Lesser General Public License.}{LesserChapter} This
+permits third parties to use these parts of our code in their proprietary
+programs to interface to Bacula.
+
+\section{Public Domain}
+\index[general]{Domain!Public }
+\index[general]{Public Domain }
+
+Some of the Bacula code, or code that Bacula references, has been released
+to the public domain. E.g. md5.c, SQLite.
+
+\section{Trademark}
+\index[general]{Trademark }
+
+Bacula\raisebox{.6ex}{\textsuperscript{\textregistered}} is a registered
+trademark of Kern Sibbald.
+
+We have trademarked the Bacula name to ensure that any program using the
+name Bacula will be exactly compatible with the program that we have
+released. The use of the name Bacula is restricted to software systems
+that agree exactly with the program presented here. If you have made
+modifications to the Bacula source code that alter in any significant
+way the way the program functions, you may not distribute it using the
+Bacula name.
+
+\section{Fiduciary License Agreement}
+\index[general]{Fiduciary License Agreement }
+Developers who have contributed significant changes to the Bacula code
+should have signed a Fiduciary License Agreement (FLA), which
+guarantees them the right to use the code they have developed, and also
+ensures that the Free Software Foundation Europe (and thus the Bacula
+project) has the rights to the code. This Fiduciary License Agreement
+is found on the Bacula web site at:
+
+\elink{http://www.bacula.org/en/FLA-bacula.en.pdf}{\url{http://www.bacula.org/en/FLA-bacula.en.pdf}}
+
+and if you are submitting code, you should fill it out then sent to:
+
+\begin{quote}
+ Kern Sibbald \\
+ Cotes-de-Montmoiret 9 \\
+ 1012 Lausanne \\
+ Switzerland \\
+\end{quote}
+
+When you send in such a
+complete document, please notify me: kern at sibbald dot com.
+
+
+\section{Disclaimer}
+\index[general]{Disclaimer }
+
+NO WARRANTY
+
+BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE
+PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
+STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE
+PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
+PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE,
+YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY
+COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE
+PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE
+OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR
+DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR
+A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH
+HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
--- /dev/null
+[General]
+img_extIsRegExp=false
+img_extensions=.eps .jpg .jpeg .png .pdf .ps .fig .gif
+kileprversion=2
+kileversion=2.0
+lastDocument=stunnel.tex
+masterDocument=misc.tex
+name=Misc
+pkg_extIsRegExp=false
+pkg_extensions=.cls .sty
+src_extIsRegExp=false
+src_extensions=.tex .ltx .latex .dtx .ins
+
+[Tools]
+MakeIndex=
+QuickBuild=
+
+[item:coverpage.tex]
+archive=true
+column=33
+encoding=UTF-8
+highlight=LaTeX
+line=0
+open=false
+order=-1
+
+[item:dvd.tex]
+archive=true
+column=0
+encoding=UTF-8
+highlight=LaTeX
+line=56
+open=false
+order=-1
+
+[item:fdl.tex]
+archive=true
+column=0
+encoding=
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+
+[item:gpl.tex]
+archive=true
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+
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+
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+open=true
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+
+[item:projects.tex]
+archive=true
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+encoding=
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+
+[item:python.tex]
+archive=true
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+
+[item:stunnel.tex]
+archive=true
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+highlight=LaTeX
+line=0
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+order=1
+
+[item:vars.tex]
+archive=true
+column=0
+encoding=UTF-8
+highlight=LaTeX
+line=48
+open=false
+order=-1
+
+[item:version.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
--- /dev/null
+%%
+%%
+%% The following characters must be preceded by a backslash
+%% to be entered as printable characters:
+%%
+%% # $ % & ~ _ ^ \ { }
+%%
+
+\documentclass[10pt,a4paper]{book}
+
+\topmargin -0.5in
+\oddsidemargin 0.0in
+\evensidemargin 0.0in
+\textheight 10in
+\textwidth 6.5in
+
+
+\usepackage{html}
+\usepackage{float}
+\usepackage{graphicx}
+\usepackage{bacula}
+\usepackage{longtable}
+\usepackage{makeidx}
+\usepackage{index}
+\usepackage{setspace}
+\usepackage{hyperref}
+% \usepackage[linkcolor=black,colorlinks=true]{hyperref}
+\usepackage{url}
+
+\makeindex
+\newindex{general}{idx}{ind}{General Index}
+
+\sloppy
+
+\begin{document}
+\sloppy
+
+\include{coverpage}
+
+\clearpage
+\pagenumbering{roman}
+\tableofcontents
+\clearpage
+
+\pagestyle{myheadings}
+\markboth{Bacula Version \version}{Bacula Version \version}
+\pagenumbering{arabic}
+\include{python}
+\include{vars}
+\include{stunnel}
+\include{dvd}
+\include{projects}
+\include{license}
+\include{fdl}
+\include{gpl}
+\include{lesser}
+
+
+% pull in the index
+\clearpage
+\printindex[general]
+
+\end{document}
--- /dev/null
+%%
+%%
+
+\chapter{Bacula Projects}
+\label{ProjectsChapter}
+\index[general]{Projects!Bacula }
+\index[general]{Bacula Projects }
+
+Once a new major version of Bacula is released, the Bacula
+users will vote on a list of new features. This vote is used
+as the main element determining what new features will be
+implemented for the next version. Generally, the development time
+for a new release is between four to nine months. Sometimes it may be
+a bit longer, but in that case, there will be a number of bug fix
+updates to the currently released version.
+
+For the current list of project, please see the projects page in the CVS
+at: \elink{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/projects}
+{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/projects}
+see the {\bf projects} file in the main source directory. The projects
+file is updated approximately once every six months.
+
+Separately from the project list, Kern maintains a current list of
+tasks as well as ideas, feature requests, and occasionally design
+notes. This list is updated roughly weekly (sometimes more often).
+For a current list of tasks you can see {\bf kernstodo} in the Source Forge
+CVS at \elink{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/kernstodo}
+{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/kernstodo}.
--- /dev/null
+%%
+%%
+
+\chapter{Python Scripting}
+\label{PythonChapter}
+\index[general]{Python Scripting}
+\index[general]{Scripting!Python}
+
+You may be asking what Python is and why a scripting language is
+needed in Bacula. The answer to the first question is that Python
+is an Object Oriented scripting language with features similar
+to those found in Perl, but the syntax of the language is much
+cleaner and simpler. The answer to why have scripting in Bacula is to
+give the user more control over the whole backup process. Probably
+the simplest example is when Bacula needs a new Volume name, with
+a scripting language such as Python, you can generate any name
+you want, based on the current state of Bacula.
+
+\section{Python Configuration}
+\index[general]{Python Configuration}
+\index[general]{Configuration!Python}
+
+Python must be enabled during the configuration process by adding
+a \verb:--:with-python, and possibly specifying an alternate
+directory if your Python is not installed in a standard system
+location. If you are using RPMs you will need the python-devel package
+installed.
+
+When Python is configured, it becomes an integral part of Bacula and
+runs in Bacula's address space, so even though it is an interpreted
+language, it is very efficient.
+
+When the Director starts, it looks to see if you have a {\bf
+Scripts Directory} Directive defined (normal default {\bf
+/etc/bacula/scripts}, if so, it looks in that directory for a file named
+{\bf DirStartUp.py}. If it is found, Bacula will pass this file to Python
+for execution. The {\bf Scripts Directory} is a new directive that you add
+to the Director resource of your bacula-dir.conf file.
+
+Note: Bacula does not install Python scripts by default because these
+scripts are for you to program. This means that with a default
+installation with Python enabled, Bacula will print the following error
+message:
+
+\begin{verbatim}
+09-Jun 15:14 bacula-dir: ERROR in pythonlib.c:131 Could not import
+Python script /etc/bacula/scripts/DirStartUp. Python disabled.
+\end{verbatim}
+
+The source code directory {\bf examples/python} contains sample scripts
+for DirStartUp.py, SDStartUp.py, and FDStartUp.py that you might want
+to use as a starting point. Normally, your scripts directory (at least
+where you store the Python scripts) should be writable by Bacula, because
+Python will attempt to write a compiled version of the scripts (e.g.
+DirStartUp.pyc) back to that directory.
+
+When starting with the sample scripts, you can delete any part that
+you will not need, but you should keep all the Bacula Event and Job Event
+definitions. If you do not want a particular event, simply replace the
+existing code with a {\bf noop = 1}.
+
+\section{Bacula Events}
+\index[general]{Bacula Events}
+\index[general]{Events}
+A Bacula event is a point in the Bacula code where Bacula
+will call a subroutine (actually a method) that you have
+defined in the Python StartUp script. Events correspond
+to some significant event such as a Job Start, a Job End,
+Bacula needs a new Volume Name, ... When your script is
+called, it will have access to all the Bacula variables
+specific to the Job (attributes of the Job Object), and
+it can even call some of the Job methods (subroutines)
+or set new values in the Job attributes, such as the
+Priority. You will see below how the events are used.
+
+\section{Python Objects}
+\index[general]{Python Objects}
+\index[general]{Objects!Python}
+
+There are four Python objects that you will need to work with:
+\begin{description}
+\item [The Bacula Object]
+ The Bacula object is created by the Bacula daemon (the Director
+ in the present case) when the daemon starts. It is available to
+ the Python startup script, {\bf DirStartup.py}, by importing the
+ Bacula definitions with {\bf import bacula}. The methods
+ available with this object are described below.
+
+\item [The Bacula Events Class]
+ You create this class in the startup script, and you pass
+ it to the Bacula Object's {\bf set\_events} method. The
+ purpose of the Bacula Events Class is to define what global
+ or daemon events you want to monitor. When one of those events
+ occurs, your Bacula Events Class will be called at the method
+ corresponding to the event. There are currently three events,
+ JobStart, JobEnd, and Exit, which are described in detail below.
+
+\item [The Job Object]
+ When a Job starts, and assuming you have defined a JobStart method
+ in your Bacula Events Class, Bacula will create a Job Object. This
+ object will be passed to the JobStart event. The Job Object has a
+ has good number of read-only members or attributes providing many
+ details of the Job, and it also has a number of writable attributes
+ that allow you to pass information into the Job. These attributes
+ are described below.
+
+\item [The Job Events Class]
+ You create this class in the JobStart method of your Bacula Events
+ class, and it allows you to define which of the possible Job Object
+ events you want to see. You must pass an instance of your Job Events
+ class to the Job Object set\_events() method.
+ Normally, you will probably only have one
+ Job Events Class, which will be instantiated for each Job. However,
+ if you wish to see different events in different Jobs, you may have
+ as many Job Events classes as you wish.
+\end{description}
+
+
+The first thing the startup script must do is to define what global Bacula
+events (daemon events), it wants to see. This is done by creating a
+Bacula Events class, instantiating it, then passing it to the
+{\bf set\_events} method. There are three possible
+events.
+
+\begin{description}
+\item [JobStart]
+ \index[general]{JobStart}
+ This Python method, if defined, will be called each time a Job is started.
+ The method is passed the class instantiation object as the first argument,
+ and the Bacula Job object as the second argument. The Bacula Job object
+ has several built-in methods, and you can define which ones you
+ want called. If you do not define this method, you will not be able
+ to interact with Bacula jobs.
+
+\item [JobEnd]
+ This Python method, if defined, will be called each time a Job terminates.
+ The method is passed the class instantiation object as the first argument,
+ and the Bacula Job object as the second argument.
+
+\item [Exit]
+ This Python method, if defined, will be called when the Director terminates.
+ The method is passed the class instantiation object as the first argument.
+\end{description}
+
+Access to the Bacula variables and methods is done with:
+
+ import bacula
+
+The following are the read-only attributes provided by the bacula object.
+\begin{description}
+\item [Name]
+\item [ConfigFile]
+\item [WorkingDir]
+\item [Version] string consisting of "Version Build-date"
+\end{description}
+
+
+A simple definition of the Bacula Events Class might be the following:
+
+\footnotesize
+\begin{verbatim}
+import sys, bacula
+class BaculaEvents:
+ def JobStart(self, job):
+ ...
+\end{verbatim}
+\normalsize
+
+Then to instantiate the class and pass it to Bacula, you
+would do:
+
+\footnotesize
+\begin{verbatim}
+bacula.set_events(BaculaEvents()) # register Bacula Events wanted
+\end{verbatim}
+\normalsize
+
+And at that point, each time a Job is started, your BaculaEvents JobStart
+method will be called.
+
+Now to actually do anything with a Job, you must define which Job events
+you want to see, and this is done by defining a JobEvents class containing
+the methods you want called. Each method name corresponds to one of the
+Job Events that Bacula will generate.
+
+A simple Job Events class might look like the following:
+
+\footnotesize
+\begin{verbatim}
+class JobEvents:
+ def NewVolume(self, job):
+ ...
+\end{verbatim}
+\normalsize
+
+Here, your JobEvents class method NewVolume will be called each time
+the Job needs a new Volume name. To actually register the events defined
+in your class with the Job, you must instantiate the JobEvents class and
+set it in the Job {\bf set\_events} variable. Note, this is a bit different
+from how you registered the Bacula events. The registration process must
+be done in the Bacula JobStart event (your method). So, you would modify
+Bacula Events (not the Job events) as follows:
+
+\footnotesize
+\begin{verbatim}
+import sys, bacula
+class BaculaEvents:
+ def JobStart(self, job):
+ events = JobEvents() # create instance of Job class
+ job.set_events(events) # register Job events desired
+ ...
+\end{verbatim}
+\normalsize
+
+When a job event is triggered, the appropriate event definition is
+called in the JobEvents class. This is the means by which your Python
+script or code gets control. Once it has control, it may read job
+attributes, or set them. See below for a list of read-only attributes,
+and those that are writable.
+
+In addition, the Bacula {\bf job} object in the Director has
+a number of methods (subroutines) that can be called. They
+are:
+\begin{description}
+\item [set\_events] The set\_events method takes a single
+ argument, which is the instantiation of the Job Events class
+ that contains the methods that you want called. The method
+ names that will be called must correspond to the Bacula
+ defined events. You may define additional methods but Bacula
+ will not use them.
+\item [run] The run method takes a single string
+ argument, which is the run command (same as in the Console)
+ that you want to submit to start a new Job. The value
+ returned by the run method is the JobId of the job that
+ started, or -1 if there was an error.
+\item [write] The write method is used to be able to send
+ print output to the Job Report. This will be described later.
+\item[cancel] The cancel method takes a single integer argument,
+ which is a JobId. If JobId is found, it will be canceled.
+\item [DoesVolumeExist] The DoesVolumeExist method takes a single
+ string argument, which is the Volume name, and returns
+ 1 if the volume exists in the Catalog and 0 if the volume
+ does not exist.
+\end{description}
+
+The following attributes are read/write within the Director
+for the {\bf job} object.
+
+\begin{description}
+\item [Priority] Read or set the Job priority.
+ Note, that setting a Job Priority is effective only before
+ the Job actually starts.
+\item [Level] This attribute contains a string representing the Job
+ level, e.g. Full, Differential, Incremental, ... if read.
+ The level can also be set.
+\end{description}
+
+The following read-only attributes are available within the Director
+for the {\bf job} object.
+
+\begin{description}
+\item [Type] This attribute contains a string representing the Job
+ type, e.g. Backup, Restore, Verify, ...
+\item [JobId] This attribute contains an integer representing the
+ JobId.
+\item [Client] This attribute contains a string with the name of the
+ Client for this job.
+\item [NumVols] This attribute contains an integer with the number of
+ Volumes in the Pool being used by the Job.
+\item [Pool] This attribute contains a string with the name of the Pool
+ being used by the Job.
+\item [Storage] This attribute contains a string with the name of the
+ Storage resource being used by the Job.
+\item [Catalog] This attribute contains a string with the name of the
+ Catalog resource being used by the Job.
+\item [MediaType] This attribute contains a string with the name of the
+ Media Type associated with the Storage resource being used by the Job.
+\item [Job] This attribute contains a string containing the name of the
+ Job resource used by this job (not unique).
+\item [JobName] This attribute contains a string representing the full
+ unique Job name.
+\item [JobStatus] This attribute contains a single character string
+ representing the current Job status. The status may change
+ during execution of the job. It may take on the following
+ values:
+ \begin{description}
+ \item [C] Created, not yet running
+ \item [R] Running
+ \item [B] Blocked
+ \item [T] Completed successfully
+ \item [E] Terminated with errors
+ \item [e] Non-fatal error
+ \item [f] Fatal error
+ \item [D] Verify found differences
+ \item [A] Canceled by user
+ \item [F] Waiting for Client
+ \item [S] Waiting for Storage daemon
+ \item [m] Waiting for new media
+ \item [M] Waiting for media mount
+ \item [s] Waiting for storage resource
+ \item [j] Waiting for job resource
+ \item [c] Waiting for client resource
+ \item [d] Waiting on maximum jobs
+ \item [t] Waiting on start time
+ \item [p] Waiting on higher priority jobs
+ \end{description}
+
+\item [Priority] This attribute contains an integer with the priority
+ assigned to the job.
+\item [CatalogRes] tuple consisting of (DBName, Address, User,
+ Password, Socket, Port, Database Vendor) taken from the Catalog resource
+ for the Job with the exception of Database Vendor, which is
+ one of the following: MySQL, PostgreSQL, SQLite, Internal,
+ depending on what database you configured.
+\item [VolumeName]
+ After a Volume has been purged, this attribute will contain the
+ name of that Volume. At other times, this value may have no meaning.
+\end{description}
+
+The following write-only attributes are available within the
+Director:
+
+\begin{description}
+\item [JobReport] Send line to the Job Report.
+\item [VolumeName] Set a new Volume name. Valid only during the
+ NewVolume event.
+\end{description}
+
+\section{Python Console Command}
+\index[general]{Python Console Command}
+\index[general]{Console Command!Python}
+
+There is a new Console command named {\bf python}. It takes
+a single argument {\bf restart}. Example:
+\begin{verbatim}
+ python restart
+\end{verbatim}
+
+This command restarts the Python interpreter in the Director.
+This can be useful when you are modifying the DirStartUp script,
+because normally Python will cache it, and thus the
+script will be read one time.
+
+\section{Debugging Python Scripts}
+\index[general]{Debugging Python Scripts}
+In general, you debug your Python scripts by using print statements.
+You can also develop your script or important parts of it as a
+separate file using the Python interpreter to run it. Once you
+have it working correctly, you can then call the script from
+within the Bacula Python script (DirStartUp.py).
+
+If you are having problems loading DirStartUp.py, you will probably
+not get any error messages because Bacula can only print Python
+error messages after the Python interpreter is started. However, you
+may be able to see the error messages by starting Bacula in
+a shell window with the {\bf -d1} option on the command line. That
+should cause the Python error messages to be printed in the shell
+window.
+
+If you are getting error messages such as the following when
+loading DirStartUp.py:
+
+\begin{verbatim}
+ Traceback (most recent call last):
+ File "/etc/bacula/scripts/DirStartUp.py", line 6, in ?
+ import time, sys, bacula
+ ImportError: /usr/lib/python2.3/lib-dynload/timemodule.so: undefined
+ symbol: PyInt_FromLong
+ bacula-dir: pythonlib.c:134 Python Import error.
+\end{verbatim}
+
+It is because the DirStartUp script is calling a dynamically loaded
+module (timemodule.so in the above case) that then tries to use
+Python functions exported from the Python interpreter (in this case
+PyInt\_FromLong). The way Bacula is currently linked with Python does
+not permit this. The solution to the problem is to put such functions
+(in this case the import of time into a separate Python script, which
+will do your calculations and return the values you want. Then call
+(not import) this script from the Bacula DirStartUp.py script, and
+it all should work as you expect.
+
+
+
+
+
+\section{Python Example}
+\index[general]{Python Example}
+\index[general]{Example!Python}
+
+An example script for the Director startup file is provided in
+{\bf examples/python/DirStartup.py} as follows:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula Python interface script for the Director
+#
+
+# You must import both sys and bacula
+import sys, bacula
+
+# This is the list of Bacula daemon events that you
+# can receive.
+class BaculaEvents(object):
+ def __init__(self):
+ # Called here when a new Bacula Events class is
+ # is created. Normally not used
+ noop = 1
+
+ def JobStart(self, job):
+ """
+ Called here when a new job is started. If you want
+ to do anything with the Job, you must register
+ events you want to receive.
+ """
+ events = JobEvents() # create instance of Job class
+ events.job = job # save Bacula's job pointer
+ job.set_events(events) # register events desired
+ sys.stderr = events # send error output to Bacula
+ sys.stdout = events # send stdout to Bacula
+ jobid = job.JobId; client = job.Client
+ numvols = job.NumVols
+ job.JobReport="Python Dir JobStart: JobId=%d Client=%s NumVols=%d\n" % (jobid,client,numvols)
+
+ # Bacula Job is going to terminate
+ def JobEnd(self, job):
+ jobid = job.JobId
+ client = job.Client
+ job.JobReport="Python Dir JobEnd output: JobId=%d Client=%s.\n" % (jobid, client)
+
+ # Called here when the Bacula daemon is going to exit
+ def Exit(self, job):
+ print "Daemon exiting."
+
+bacula.set_events(BaculaEvents()) # register daemon events desired
+
+"""
+ These are the Job events that you can receive.
+"""
+class JobEvents(object):
+ def __init__(self):
+ # Called here when you instantiate the Job. Not
+ # normally used
+ noop = 1
+
+ def JobInit(self, job):
+ # Called when the job is first scheduled
+ noop = 1
+
+ def JobRun(self, job):
+ # Called just before running the job after initializing
+ # This is the point to change most Job parameters.
+ # It is equivalent to the JobRunBefore point.
+ noop = 1
+
+ def NewVolume(self, job):
+ # Called when Bacula wants a new Volume name. The Volume
+ # name returned, if any, must be stored in job.VolumeName
+ jobid = job.JobId
+ client = job.Client
+ numvol = job.NumVols;
+ print job.CatalogRes
+ job.JobReport = "JobId=%d Client=%s NumVols=%d" % (jobid, client, numvol)
+ job.JobReport="Python before New Volume set for Job.\n"
+ Vol = "TestA-%d" % numvol
+ job.JobReport = "Exists=%d TestA-%d" % (job.DoesVolumeExist(Vol), numvol)
+ job.VolumeName="TestA-%d" % numvol
+ job.JobReport="Python after New Volume set for Job.\n"
+ return 1
+
+ def VolumePurged(self, job):
+ # Called when a Volume is purged. The Volume name can be referenced
+ # with job.VolumeName
+ noop = 1
+
+
+
+\end{verbatim}
+\normalsize
--- /dev/null
+%%
+%%
+
+\chapter{Using Stunnel to Encrypt Communications}
+\label{StunnelChapter}
+\index[general]{Using Stunnel to Encrypt Communications to Clients }
+
+Prior to version 1.37, Bacula did not have built-in communications encryption.
+Please see the \ilink {TLS chapter}{CommEncryption} if you are using Bacula
+1.37 or greater.
+
+Without too much effort, it is possible to encrypt the communications
+between any of the daemons. This chapter will show you how to use {\bf
+stunnel} to encrypt communications to your client programs. We assume the
+Director and the Storage daemon are running on one machine that will be called
+{\bf server} and the Client or File daemon is running on a different machine
+called {\bf client}. Although the details may be slightly different, the same
+principles apply whether you are encrypting between Unix, Linux, or Win32
+machines. This example was developed between two Linux machines running
+stunnel version 4.04-4 on a Red Hat Enterprise 3.0 system.
+
+\section{Communications Ports Used}
+\index[general]{Used!Communications Ports }
+\index[general]{Communications Ports Used }
+
+First, you must know that with the standard Bacula configuration, the Director
+will contact the File daemon on port 9102. The File daemon then contacts the
+Storage daemon using the address and port parameters supplied by the Director.
+The standard port used will be 9103. This is the typical server/client view of
+the world, the File daemon is a server to the Director (i.e. listens for the
+Director to contact it), and the Storage daemon is a server to the File
+daemon.
+
+\section{Encryption}
+\index[general]{Encryption }
+
+The encryption is accomplished between the Director and the File daemon by
+using an stunnel on the Director's machine (server) to encrypt the data and to
+contact an stunnel on the File daemon's machine (client), which decrypts the
+data and passes it to the client.
+
+Between the File daemon and the Storage daemon, we use an stunnel on the File
+daemon's machine to encrypt the data and another stunnel on the Storage
+daemon's machine to decrypt the data.
+
+As a consequence, there are actually four copies of stunnel running, two on the
+server and two on the client. This may sound a bit complicated, but it really
+isn't. To accomplish this, we will need to construct four separate conf files
+for stunnel, and we will need to make some minor modifications to the
+Director's conf file. None of the other conf files need to be changed.
+
+\section{A Picture}
+\index[general]{Picture }
+
+Since pictures usually help a lot, here is an overview of what we will be
+doing. Don't worry about all the details of the port numbers and such for the
+moment.
+
+\footnotesize
+\begin{verbatim}
+ File daemon (client):
+ stunnel-fd1.conf
+ |===========|
+ Port 29102 >----| Stunnel 1 |-----> Port 9102
+ |===========|
+ stunnel-fd2.conf
+ |===========|
+ Port 9103 >----| Stunnel 2 |-----> server:29103
+ |===========|
+ Director (server):
+ stunnel-dir.conf
+ |===========|
+ Port 29102 >----| Stunnel 3 |-----> client:29102
+ |===========|
+ stunnel-sd.conf
+ |===========|
+ Port 29103 >----| Stunnel 4 |-----> 9103
+ |===========|
+\end{verbatim}
+\normalsize
+
+\section{Certificates}
+\index[general]{Certificates }
+
+In order for stunnel to function as a server, which it does in our diagram for
+Stunnel 1 and Stunnel 4, you must have a certificate and the key. It is
+possible to keep the two in separate files, but normally, you keep them in one
+single .pem file. You may create this certificate yourself in which case, it
+will be self-signed, or you may have it signed by a CA.
+
+If you want your clients to verify that the server is in fact valid (Stunnel 2
+and Stunnel 3), you will need to have the server certificates signed by a CA
+(Certificate Authority), and you will need to have the CA's public certificate
+(contains the CA's public key).
+
+Having a CA signed certificate is {\bf highly} recommended if you are using
+your client across the Internet, otherwise you are exposed to the man in the
+middle attack and hence loss of your data.
+
+See below for how to create a self-signed certificate.
+
+\section{Securing the Data Channel}
+\index[general]{Channel!Securing the Data }
+\index[general]{Securing the Data Channel }
+
+To simplify things a bit, let's for the moment consider only the data channel.
+That is the connection between the File daemon and the Storage daemon, which
+takes place on port 9103. In fact, in a minimalist solution, this is the only
+connection that needs to be encrypted, because it is the one that transports your
+data. The connection between the Director and the File daemon is simply a
+control channel used to start the job and get the job status.
+
+Normally the File daemon will contact the Storage daemon on port 9103
+(supplied by the Director), so we need an stunnel that listens on port 9103 on
+the File daemon's machine, encrypts the data and sends it to the Storage
+daemon. This is depicted by Stunnel 2 above. Note that this stunnel is
+listening on port 9103 and sending to server:29103. We use port 29103 on the
+server because if we would send the data to port 9103, it would go directly to the
+Storage daemon, which doesn't understand encrypted data. On the server
+machine, we run Stunnel 4, which listens on port 29103, decrypts the data and
+sends it to the Storage daemon, which is listening on port 9103.
+
+\section{Data Channel Configuration}
+\index[general]{Modification of bacula-dir.conf for the Data Channel }
+\index[general]{baculoa-dir.conf!Modification for the Data Channel }
+
+The Storage resource of the bacula-dir.conf normally looks something like the
+following:
+
+\footnotesize
+\begin{verbatim}
+Storage {
+ Name = File
+ Address = server
+ SDPort = 9103
+ Password = storage_password
+ Device = File
+ Media Type = File
+}
+\end{verbatim}
+\normalsize
+
+Notice that this is running on the server machine, and it points the File
+daemon back to server:9103, which is where our Storage daemon is listening. We
+modify this to be:
+
+\footnotesize
+\begin{verbatim}
+Storage {
+ Name = File
+ Address = localhost
+ SDPort = 9103
+ Password = storage_password
+ Device = File
+ Media Type = File
+}
+\end{verbatim}
+\normalsize
+
+This causes the File daemon to send the data to the stunnel running on
+localhost (the client machine). We could have used client as the address as
+well.
+
+\section{Stunnel Configuration for the Data Channel}
+\index[general]{Stunnel Configuration for the Data Channel }
+
+In the diagram above, we see above Stunnel 2 that we use stunnel-fd2.conf on the
+client. A pretty much minimal config file would look like the following:
+
+\footnotesize
+\begin{verbatim}
+client = yes
+[29103]
+accept = localhost:9103
+connect = server:29103
+\end{verbatim}
+\normalsize
+
+The above config file does encrypt the data but it does not require a
+certificate, so it is subject to the man in the middle attack. The file I
+actually used, stunnel-fd2.conf, looked like this:
+
+\footnotesize
+\begin{verbatim}
+#
+# Stunnel conf for Bacula client -> SD
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29103]
+accept = localhost:9103
+connect = server:29103
+\end{verbatim}
+\normalsize
+
+You will notice that I specified a pid file location because I ran stunnel
+under my own userid so I could not use the default, which requires root
+permission. I also specified a certificate that I have as well as verify level
+2 so that the certificate is required and verified, and I must supply the
+location of the CA (Certificate Authority) certificate so that the stunnel
+certificate can be verified. Finally, you will see that there are two lines
+commented out, which when enabled, produce a lot of nice debug info in the
+command window.
+
+If you do not have a signed certificate (stunnel.pem), you need to delete the
+cert, CAfile, and verify lines.
+
+Note that the stunnel.pem, is actually a private key and a certificate in a
+single file. These two can be kept and specified individually, but keeping
+them in one file is more convenient.
+
+The config file, stunnel-sd.conf, needed for Stunnel 4 on the server machine
+is:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for Storage daemon
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is mandatory here, it may be self signed
+# If it is self signed, the client may not use
+# verify
+#
+cert = /home/kern/stunnel/stunnel.pem
+client = no
+# debug = 7
+# foreground = yes
+[29103]
+accept = 29103
+connect = 9103
+\end{verbatim}
+\normalsize
+
+\section{Starting and Testing the Data Encryption}
+\index[general]{Starting and Testing the Data Encryption }
+\index[general]{Encryption!Starting and Testing the Data }
+
+It will most likely be the simplest to implement the Data Channel encryption
+in the following order:
+
+\begin{itemize}
+\item Setup and run Bacula backing up some data on your client machine
+ without encryption.
+\item Stop Bacula.
+\item Modify the Storage resource in the Director's conf file.
+\item Start Bacula
+\item Start stunnel on the server with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-sd.conf
+
+\end{verbatim}
+\normalsize
+
+\item Start stunnel on the client with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-fd2.conf
+
+\end{verbatim}
+\normalsize
+
+\item Run a job.
+\item If it doesn't work, turn debug on in both stunnel conf files, restart
+ the stunnels, rerun the job, repeat until it works.
+ \end{itemize}
+
+\section{Encrypting the Control Channel}
+\index[general]{Channel!Encrypting the Control }
+\index[general]{Encrypting the Control Channel }
+
+The Job control channel is between the Director and the File daemon, and as
+mentioned above, it is not really necessary to encrypt, but it is good
+practice to encrypt it as well. The two stunnels that are used in this case
+will be Stunnel 1 and Stunnel 3 in the diagram above. Stunnel 3 on the server
+might normally listen on port 9102, but if you have a local File daemon, this
+will not work, so we make it listen on port 29102. It then sends the data to
+client:29102. Again we use port 29102 so that the stunnel on the client
+machine can decrypt the data before passing it on to port 9102 where the File
+daemon is listening.
+
+\section{Control Channel Configuration}
+\index[general]{Control Channel Configuration }
+
+We need to modify the standard Client resource, which would normally look
+something like:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client-fd
+ Address = client
+ FDPort = 9102
+ Catalog = BackupDB
+ Password = "xxx"
+}
+\end{verbatim}
+\normalsize
+
+to be:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client-fd
+ Address = localhost
+ FDPort = 29102
+ Catalog = BackupDB
+ Password = "xxx"
+}
+\end{verbatim}
+\normalsize
+
+This will cause the Director to send the control information to
+localhost:29102 instead of directly to the client.
+
+\section{Stunnel Configuration for the Control Channel}
+\index[general]{Config Files for stunnel to Encrypt the Control Channel }
+
+The stunnel config file, stunnel-dir.conf, for the Director's machine would
+look like the following:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for the Directory to contact a client
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29102]
+accept = localhost:29102
+connect = client:29102
+\end{verbatim}
+\normalsize
+
+and the config file, stunnel-fd1.conf, needed to run stunnel on the Client
+would be:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for the Directory to contact a client
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29102]
+accept = localhost:29102
+connect = client:29102
+\end{verbatim}
+\normalsize
+
+\section{Starting and Testing the Control Channel}
+\index[general]{Starting and Testing the Control Channel }
+\index[general]{Channel!Starting and Testing the Control }
+
+It will most likely be the simplest to implement the Control Channel
+encryption in the following order:
+
+\begin{itemize}
+\item Stop Bacula.
+\item Modify the Client resource in the Director's conf file.
+\item Start Bacula
+\item Start stunnel on the server with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-dir.conf
+
+\end{verbatim}
+\normalsize
+
+\item Start stunnel on the client with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-fd1.conf
+
+\end{verbatim}
+\normalsize
+
+\item Run a job.
+\item If it doesn't work, turn debug on in both stunnel conf files, restart
+ the stunnels, rerun the job, repeat until it works.
+ \end{itemize}
+
+\section{Using stunnel to Encrypt to a Second Client}
+\index[general]{Using stunnel to Encrypt to a Second Client }
+\index[general]{Client!Using stunnel to Encrypt to a Second }
+
+On the client machine, you can just duplicate the setup that you have on the
+first client file for file and it should work fine.
+
+In the bacula-dir.conf file, you will want to create a second client pretty
+much identical to how you did for the first one, but the port number must be
+unique. We previously used:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client-fd
+ Address = localhost
+ FDPort = 29102
+ Catalog = BackupDB
+ Password = "xxx"
+}
+\end{verbatim}
+\normalsize
+
+so for the second client, we will, of course, have a different name, and we
+will also need a different port. Remember that we used port 29103 for the
+Storage daemon, so for the second client, we can use port 29104, and the
+Client resource would look like:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client2-fd
+ Address = localhost
+ FDPort = 29104
+ Catalog = BackupDB
+ Password = "yyy"
+}
+\end{verbatim}
+\normalsize
+
+Now, fortunately, we do not need a third stunnel to on the Director's machine,
+we can just add the new port to the config file, stunnel-dir.conf, to make:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for the Directory to contact a client
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29102]
+accept = localhost:29102
+connect = client:29102
+[29104]
+accept = localhost:29102
+connect = client2:29102
+\end{verbatim}
+\normalsize
+
+There are no changes necessary to the Storage daemon or the other stunnel so
+that this new client can talk to our Storage daemon.
+
+\section{Creating a Self-signed Certificate}
+\index[general]{Creating a Self-signed Certificate }
+\index[general]{Certificate!Creating a Self-signed }
+
+You may create a self-signed certificate for use with stunnel that will permit
+you to make it function, but will not allow certificate validation. The .pem
+file containing both the certificate and the key can be made with the
+following, which I put in a file named {\bf makepem}:
+
+\footnotesize
+\begin{verbatim}
+#!/bin/sh
+#
+# Simple shell script to make a .pem file that can be used
+# with stunnel and Bacula
+#
+OPENSSL=openssl
+ umask 77
+ PEM1="/bin/mktemp openssl.XXXXXX"
+ PEM2="/bin/mktemp openssl.XXXXXX"
+ ${OPENSSL} req -newkey rsa:1024 -keyout $PEM1 -nodes \
+ -x509 -days 365 -out $PEM2
+ cat $PEM1 > stunnel.pem
+ echo "" >>stunnel.pem
+ cat $PEM2 >>stunnel.pem
+ rm $PEM1 $PEM2
+\end{verbatim}
+\normalsize
+
+The above script will ask you a number of questions. You may simply answer
+each of them by entering a return, or if you wish you may enter your own data.
+
+
+\section{Getting a CA Signed Certificate}
+\index[general]{Certificate!Getting a CA Signed }
+\index[general]{Getting a CA Signed Certificate }
+
+The process of getting a certificate that is signed by a CA is quite a bit
+more complicated. You can purchase one from quite a number of PKI vendors, but
+that is not at all necessary for use with Bacula.
+
+To get a CA signed
+certificate, you will either need to find a friend that has setup his own CA
+or to become a CA yourself, and thus you can sign all your own certificates.
+The book OpenSSL by John Viega, Matt Mesier \& Pravir Chandra from O'Reilly
+explains how to do it, or you can read the documentation provided in the
+Open-source PKI Book project at Source Forge:
+\elink{
+http://ospkibook.sourceforge.net/docs/OSPKI-2.4.7/OSPKI-html/ospki-book.htm}
+{http://ospkibook.sourceforge.net/docs/OSPKI-2.4.7/OSPKI-html/ospki-book.htm}.
+Note, this link may change.
+
+\section{Using ssh to Secure the Communications}
+\index[general]{Communications!Using ssh to Secure the }
+\index[general]{Using ssh to Secure the Communications }
+
+Please see the script {\bf ssh-tunnel.sh} in the {\bf examples} directory. It
+was contributed by Stephan Holl.
--- /dev/null
+#!/usr/bin/perl -w
+#
+use strict;
+
+# Used to change the names of the image files generated by latex2html from imgxx.png
+# to meaningful names. Provision is made to go either from or to the meaningful names.
+# The meaningful names are obtained from a file called imagename_translations, which
+# is generated by extensions to latex2html in the make_image_file subroutine in
+# bacula.perl.
+
+# Opens the file imagename_translations and reads the contents into a hash.
+# The hash is creaed with the imgxx.png files as the key if processing TO
+# meaningful filenames, and with the meaningful filenames as the key if
+# processing FROM meaningful filenames.
+# Then opens the html file(s) indicated in the command-line arguments and
+# changes all image references according to the translations described in the
+# above file. Finally, it renames the image files.
+#
+# Original creation: 3-27-05 by Karl Cunningham.
+# Modified 5-21-05 to go FROM and TO meaningful filenames.
+#
+my $TRANSFILE = "imagename_translations";
+my $path;
+
+# Loads the contents of $TRANSFILE file into the hash referenced in the first
+# argument. The hash is loaded to translate old to new if $direction is 0,
+# otherwise it is loaded to translate new to old. In this context, the
+# 'old' filename is the meaningful name, and the 'new' filename is the
+# imgxx.png filename. It is assumed that the old image is the one that
+# latex2html has used as the source to create the imgxx.png filename.
+# The filename extension is taken from the file
+sub read_transfile {
+ my ($trans,$direction) = @_;
+
+ if (!open IN,"<$path$TRANSFILE") {
+ print "WARNING: Cannot open image translation file $path$TRANSFILE for reading\n";
+ print " Image filename translation aborted\n\n";
+ exit 0;
+ }
+
+ while (<IN>) {
+ chomp;
+ my ($new,$old) = split(/\001/);
+
+ # Old filenames will usually have a leading ./ which we don't need.
+ $old =~ s/^\.\///;
+
+ # The filename extension of the old filename must be made to match
+ # the new filename because it indicates the encoding format of the image.
+ my ($ext) = $new =~ /(\.[^\.]*)$/;
+ $old =~ s/\.[^\.]*$/$ext/;
+ if ($direction == 0) {
+ $trans->{$new} = $old;
+ } else {
+ $trans->{$old} = $new;
+ }
+ }
+ close IN;
+}
+
+# Translates the image names in the file given as the first argument, according to
+# the translations in the hash that is given as the second argument.
+# The file contents are read in entirely into a string, the string is processed, and
+# the file contents are then written. No particular care is taken to ensure that the
+# file is not lost if a system failure occurs at an inopportune time. It is assumed
+# that the html files being processed here can be recreated on demand.
+#
+# Links to other files are added to the %filelist for processing. That way,
+# all linked files will be processed (assuming they are local).
+sub translate_html {
+ my ($filename,$trans,$filelist) = @_;
+ my ($contents,$out,$this,$img,$dest);
+ my $cnt = 0;
+
+ # If the filename is an external link ignore it. And drop any file:// from
+ # the filename.
+ $filename =~ /^(http|ftp|mailto)\:/ and return 0;
+ $filename =~ s/^file\:\/\///;
+ # Load the contents of the html file.
+ if (!open IF,"<$path$filename") {
+ print "WARNING: Cannot open $path$filename for reading\n";
+ print " Image Filename Translation aborted\n\n";
+ exit 0;
+ }
+
+ while (<IF>) {
+ $contents .= $_;
+ }
+ close IF;
+
+ # Now do the translation...
+ # First, search for an image filename.
+ while ($contents =~ /\<\s*IMG[^\>]*SRC=\"/si) {
+ $contents = $';
+ $out .= $` . $&;
+
+ # The next thing is an image name. Get it and translate it.
+ $contents =~ /^(.*?)\"/s;
+ $contents = $';
+ $this = $&;
+ $img = $1;
+ # If the image is in our list of ones to be translated, do it
+ # and feed the result to the output.
+ $cnt += $this =~ s/$img/$trans->{$img}/ if (defined($trans->{$img}));
+ $out .= $this;
+ }
+ $out .= $contents;
+
+ # Now send the translated text to the html file, overwriting what's there.
+ open OF,">$path$filename" or die "Cannot open $path$filename for writing\n";
+ print OF $out;
+ close OF;
+
+ # Now look for any links to other files and add them to the list of files to do.
+ while ($out =~ /\<\s*A[^\>]*HREF=\"(.*?)\"/si) {
+ $out = $';
+ $dest = $1;
+ # Drop an # and anything after it.
+ $dest =~ s/\#.*//;
+ $filelist->{$dest} = '' if $dest;
+ }
+ return $cnt;
+}
+
+# REnames the image files spefified in the %translate hash.
+sub rename_images {
+ my $translate = shift;
+ my ($response);
+
+ foreach (keys(%$translate)) {
+ if (! $translate->{$_}) {
+ print " WARNING: No destination Filename for $_\n";
+ } else {
+ $response = `mv -f $path$_ $path$translate->{$_} 2>&1`;
+ $response and print "ERROR from system $response\n";
+ }
+ }
+}
+
+#################################################
+############# MAIN #############################
+################################################
+
+# %filelist starts out with keys from the @ARGV list. As files are processed,
+# any links to other files are added to the %filelist. A hash of processed
+# files is kept so we don't do any twice.
+
+# The first argument must be either --to_meaningful_names or --from_meaningful_names
+
+my (%translate,$search_regex,%filelist,%completed,$thisfile);
+my ($cnt,$direction);
+
+my $arg0 = shift(@ARGV);
+$arg0 =~ /^(--to_meaningful_names|--from_meaningful_names)$/ or
+ die "ERROR: First argument must be either \'--to_meaningful_names\' or \'--from_meaningful_names\'\n";
+
+$direction = ($arg0 eq '--to_meaningful_names') ? 0 : 1;
+
+(@ARGV) or die "ERROR: Filename(s) to process must be given as arguments\n";
+
+# Use the first argument to get the path to the file of translations.
+my $tmp = $ARGV[0];
+($path) = $tmp =~ /(.*\/)/;
+$path = '' unless $path;
+
+read_transfile(\%translate,$direction);
+
+foreach (@ARGV) {
+ # Strip the path from the filename, and use it later on.
+ if (s/(.*\/)//) {
+ $path = $1;
+ } else {
+ $path = '';
+ }
+ $filelist{$_} = '';
+
+ while ($thisfile = (keys(%filelist))[0]) {
+ $cnt += translate_html($thisfile,\%translate,\%filelist) if (!exists($completed{$thisfile}));
+ delete($filelist{$thisfile});
+ $completed{$thisfile} = '';
+ }
+ print "translate_images.pl: $cnt image filenames translated ",($direction)?"from":"to"," meaningful names\n";
+}
+
+rename_images(\%translate);
--- /dev/null
+%%
+%%
+
+\chapter{Variable Expansion}
+\label{VarsChapter}
+\index[general]{Variable Expansion }
+\index[general]{Expansion!Variable }
+
+% TODO: does the following mean that this should not be in book?
+
+Please note that as of version 1.37, the Variable Expansion
+is deprecated and replaced by Python scripting (not yet
+documented).
+
+Variable expansion is somewhat similar to Unix shell variable expansion.
+Currently (version 1.31), it is used only in format labels, but in the future,
+it will most likely be used in more places.
+
+\section{General Functionality}
+\index[general]{Functionality!General }
+\index[general]{General Functionality }
+
+This is basically a string expansion capability that permits referencing
+variables, indexing arrays, conditional replacement of variables, case
+conversion, substring selection, regular expression matching and replacement,
+character class replacement, padding strings, repeated expansion in a user
+controlled loop, support of arithmetic expressions in the loop start, step and
+end conditions, and recursive expansion.
+
+When using variable expansion characters in a Volume Label Format record, the
+format should always be enclosed in double quotes ({\bf "}).
+
+For example, {\bf \$\{HOME\}} will be replaced by your home directory as
+defined in the environment. If you have defined the variable {\bf xxx} to be
+{\bf Test}, then the reference {\bf \$\{xxx:p/7/Y/r\}} will right pad the
+contents of {\bf xxx} to a length of seven characters filling with the
+character {\bf Y} giving {\bf YYYTest}.
+
+\section{Bacula Variables}
+\index[general]{Bacula Variables }
+\index[general]{Variables!Bacula }
+
+Within Bacula, there are three main classes of variables with some minor
+variations within the classes. The classes are:
+
+\begin{description}
+
+\item [Counters]
+ \index[general]{Counters }
+ Counters are defined by the {\bf Counter} resources in the Director's conf
+file. The counter can either be a temporary counter that lasts for the
+duration of Bacula's execution, or it can be a variable that is stored in
+the catalog, and thus retains its value from one Bacula execution to another.
+Counter variables may be incremented by postfixing a plus sign ({\bf +} after
+the variable name).
+
+\item [Internal Variables]
+ \index[general]{Internal Variables }
+ Internal variables are read-only, and may be related to the current job (i.e.
+Job name), or maybe special variables such as the date and time. The
+following variables are available:
+
+\begin{itemize}
+\item [Year] -- the full year
+\item [Month] -- the current month 1-12
+\item [Day] -- the day of the month 1-31
+\item [Hour] -- the hour 0-24
+\item [Minute] -- the current minute 0-59
+\item [Second] -- the current second 0-59
+\item [WeekDay] -- the current day of the week 0-6 with 0 being Sunday
+\item [Job] -- the job name
+\item [general] -- the Director's name
+\item [Level] -- the Job Level
+\item [Type] -- the Job type
+\item [JobId] -- the JobId
+\item [JobName] -- the unique job name composed of Job and date
+\item [Storage] -- the Storage daemon's name
+\item [Client] -- the Client's name
+\item [NumVols] -- the current number of Volumes in the Pool
+\item [Pool] -- the Pool name
+\item [Catalog] -- the Catalog name
+\item [MediaType] -- the Media Type
+ \end{itemize}
+
+\item [Environment Variables]
+ \index[general]{Environment Variables }
+ Environment variables are read-only, and must be defined in the environment
+prior to executing Bacula. Environment variables may be either scalar or an
+array, where the elements of the array are referenced by subscripting the
+variable name (e.g. {\bf \$\{Months[3]\}}). Environment variable arrays are
+defined by separating the elements with a vertical bar ({\bf |}), thus {\bf
+set Months="Jan|Feb|Mar|Apr|..."} defines an environment variable named
+{\bf Month} that will be treated as an array, and the reference {\bf
+\$\{Months[3]\}} will yield {\bf Mar}. The elements of the array can have
+differing lengths.
+\end{description}
+
+\section{Full Syntax}
+\index[general]{Syntax!Full }
+\index[general]{Full Syntax }
+
+Since the syntax is quite extensive, below, you will find the pseudo BNF. The
+special characters have the following meaning:
+
+\footnotesize
+\begin{verbatim}
+ ::= definition
+ ( ) grouping if the parens are not quoted
+ | separates alternatives
+ '/' literal / (or any other character)
+ CAPS a character or character sequence
+ * preceding item can be repeated zero or more times
+ ? preceding item can appear zero or one time
+ + preceding item must appear one or more times
+\end{verbatim}
+\normalsize
+
+And the pseudo BNF describing the syntax is:
+
+\footnotesize
+\begin{verbatim}
+ input ::= ( TEXT
+ | variable
+ | INDEX_OPEN input INDEX_CLOSE (loop_limits)?
+ )*
+ variable ::= DELIM_INIT (name|expression)
+ name ::= (NAME_CHARS)+
+ expression ::= DELIM_OPEN
+ (name|variable)+
+ (INDEX_OPEN num_exp INDEX_CLOSE)?
+ (':' command)*
+ DELIM_CLOSE
+ command ::= '-' (TEXT_EXP|variable)+
+ | '+' (TEXT_EXP|variable)+
+ | 'o' NUMBER ('-'|',') (NUMBER)?
+ | '#'
+ | '*' (TEXT_EXP|variable)+
+ | 's' '/' (TEXT_PATTERN)+
+ '/' (variable|TEXT_SUBST)*
+ '/' ('m'|'g'|'i'|'t')*
+ | 'y' '/' (variable|TEXT_SUBST)+
+ '/' (variable|TEXT_SUBST)*
+ '/'
+ | 'p' '/' NUMBER
+ '/' (variable|TEXT_SUBST)*
+ '/' ('r'|'l'|'c')
+ | '%' (name|variable)+
+ ('(' (TEXT_ARGS)? ')')?
+ | 'l'
+ | 'u'
+ num_exp ::= operand
+ | operand ('+'|'-'|'*'|'/'|'%') num_exp
+ operand ::= ('+'|'-')? NUMBER
+ | INDEX_MARK
+ | '(' num_exp ')'
+ | variable
+ loop_limits ::= DELIM_OPEN
+ (num_exp)? ',' (num_exp)? (',' (num_exp)?)?
+ DELIM_CLOSE
+ NUMBER ::= ('0'|...|'9')+
+ TEXT_PATTERN::= (^('/'))+
+ TEXT_SUBST ::= (^(DELIM_INIT|'/'))+
+ TEXT_ARGS ::= (^(DELIM_INIT|')'))+
+ TEXT_EXP ::= (^(DELIM_INIT|DELIM_CLOSE|':'|'+'))+
+ TEXT ::= (^(DELIM_INIT|INDEX_OPEN|INDEX_CLOSE))+
+ DELIM_INIT ::= '$'
+ DELIM_OPEN ::= '{'
+ DELIM_CLOSE ::= '}'
+ INDEX_OPEN ::= '['
+ INDEX_CLOSE ::= ']'
+ INDEX_MARK ::= '#'
+ NAME_CHARS ::= 'a'|...|'z'|'A'|...|'Z'|'0'|...|'9'
+\end{verbatim}
+\normalsize
+
+\section{Semantics}
+\index[general]{Semantics }
+
+The items listed in {\bf command} above, which always follow a colon ({\bf :})
+have the following meanings:
+
+\footnotesize
+\begin{verbatim}
+ - perform substitution if variable is empty
+ + perform substitution if variable is not empty
+ o cut out substring of the variable value
+ # length of the variable value
+ * substitute empty string if the variable value is not empty,
+ otherwise substitute the trailing parameter
+ s regular expression search and replace. The trailing
+ options are: m = multiline, i = case insensitive,
+ g = global, t = plain text (no regexp)
+ y transpose characters from class A to class B
+ p pad variable to l = left, r = right or c = center,
+ with second value.
+ % special function call (none implemented)
+ l lower case the variable value
+ u upper case the variable value
+\end{verbatim}
+\normalsize
+
+The {\bf loop\_limits} are start, step, and end values.
+
+A counter variable name followed immediately by a plus ({\bf +}) will cause
+the counter to be incremented by one.
+
+\section{Examples}
+\index[general]{Examples }
+
+To create an ISO date:
+
+\footnotesize
+\begin{verbatim}
+ DLT-${Year}-${Month:p/2/0/r}-${Day:p/2/0/r}
+\end{verbatim}
+\normalsize
+
+on 20 June 2003 would give {\bf DLT-2003-06-20}
+
+If you set the environment variable {\bf mon} to
+
+\footnotesize
+\begin{verbatim}
+ January|February|March|April|May|...
+ File-${mon[${Month}]}/${Day}/${Year}
+\end{verbatim}
+\normalsize
+
+on the first of March would give {\bf File-March/1/2003 }
--- /dev/null
+#
+#
+# Makefile for LaTeX
+#
+# To build everything do
+# make tex
+# make web
+# make html
+# make dvipdf
+#
+# or simply
+#
+# make
+#
+# for rapid development do:
+# make tex
+# make show
+#
+#
+# If you are having problems getting "make" to work, debugging it is
+# easier if can see the output from latex, which is normally redirected
+# to /dev/null. To see it, do the following:
+#
+# cd docs/manual
+# make tex
+# latex bacula.tex
+#
+# typically the latex command will stop indicating the error (e.g. a
+# missing \ in front of a _ or a missing { or ] ...
+#
+# The following characters must be preceded by a backslash
+# to be entered as printable characters:
+#
+# # $ % & ~ _ ^ \ { }
+#
+
+IMAGES=../../../images
+
+DOC=misc
+
+first_rule: all
+
+all: tex web dvipdf mini-clean
+
+.SUFFIXES: .tex .html
+.PHONY:
+.DONTCARE:
+
+
+tex:
+ @./update_version
+ @echo "Making version `cat version.tex`"
+ @cp -fp ${IMAGES}/hires/*.eps .
+ @touch ${DOC}i-dir.tex ${DOC}i-fd.tex ${DOC}i-sd.tex \
+ ${DOC}i-console.tex ${DOC}i-general.tex
+ latex -interaction=batchmode ${DOC}.tex
+ makeindex ${DOC}.idx -o ${DOC}.ind 2>/dev/null
+ latex -interaction=batchmode ${DOC}.tex
+
+pdf:
+ @echo "Making pdfm"
+ @cp -fp ${IMAGES}/hires/*.eps .
+ dvipdfm -p a4 ${DOC}.dvi
+
+dvipdf:
+ @echo "Making dvi to pdf"
+ @cp -fp ${IMAGES}/hires/*.eps .
+ dvipdf ${DOC}.dvi ${DOC}.pdf
+
+html:
+ @echo " "
+ @echo "Making html"
+ @cp -fp ${IMAGES}/*.eps .
+ @rm -f next.eps next.png prev.eps prev.png up.eps up.png
+ @(if [ -f imagename_translations ] ; then \
+ ./translate_images.pl --from_meaningful_names ${DOC}.html; \
+ fi)
+ latex2html -white -no_subdir -split 0 -toc_stars -white \
+ -init_file latex2html-init.pl ${DOC} >tex.out 2>&1
+ ./translate_images.pl --to_meaningful_names ${DOC}.html
+ (cd ${DOC}; for i in *.png ; do cp -fp ../${IMAGES}/$${i} . 2>/dev/null; done)
+ @echo "Done making html"
+
+web:
+ @echo "Making web"
+ @mkdir -p ${DOC}
+ @cp -fp ${IMAGES}/*.eps .
+ @rm -f next.eps next.png prev.eps prev.png up.eps up.png
+ @cp -fp ${IMAGES}/*.eps ${DOC}/
+ @cp -fp ${IMAGES}/*.eps ${IMAGES}/*.png ${DOC}/
+ @rm -f ${DOC}/xp-*.png
+ @rm -f ${DOC}/next.eps ${DOC}/next.png ${DOC}/prev.eps ${DOC}/prev.png ${DOC}/up.eps ${DOC}/up.png
+ @rm -rf ${DOC}/*.html
+ latex2html -split 3 -local_icons -t "Miscellaneous Guide" -long_titles 4 \
+ -toc_stars -contents_in_nav -init_file latex2html-init.pl -white ${DOC} >tex.out 2>&1
+ ./translate_images.pl --to_meaningful_names ${DOC}/Miscel_Guide.html
+ (cd ${DOC}; for i in *.png ; do cp -fp ../${IMAGES}/$${i} . 2>/dev/null; done)
+ @echo "Done making web"
+show:
+ xdvi ${DOC}
+
+texcheck:
+ ./check_tex.pl ${DOC}.tex
+
+main_configs:
+ pic2graph -density 100 <main_configs.pic >main_configs.png
+
+mini-clean:
+ @rm -f 1 2 3 *.tex~
+ @rm -f *.gif *.jpg *.eps
+ @rm -f *.aux *.cp *.fn *.ky *.log *.pg
+ @rm -f *.backup *.ilg *.lof *.lot
+ @rm -f *.cdx *.cnd *.ddx *.ddn *.fdx *.fnd *.ind *.sdx *.snd
+ @rm -f *.dnd *.old *.out
+ @rm -f ${DOC}/*.gif ${DOC}/*.jpg ${DOC}/*.eps
+ @rm -f ${DOC}/*.aux ${DOC}/*.cp ${DOC}/*.fn ${DOC}/*.ky ${DOC}/*.log ${DOC}/*.pg
+ @rm -f ${DOC}/*.backup ${DOC}/*.ilg ${DOC}/*.lof ${DOC}/*.lot
+ @rm -f ${DOC}/*.cdx ${DOC}/*.cnd ${DOC}/*.ddx ${DOC}/*.ddn ${DOC}/*.fdx ${DOC}/*.fnd ${DOC}/*.ind ${DOC}/*.sdx ${DOC}/*.snd
+ @rm -f ${DOC}/*.dnd ${DOC}/*.old ${DOC}/*.out
+ @rm -f ${DOC}/WARNINGS
+
+
+clean:
+ @rm -f 1 2 3 *.tex~
+ @rm -f *.png *.gif *.jpg *.eps
+ @rm -f *.pdf *.aux *.cp *.fn *.ky *.log *.pg
+ @rm -f *.html *.backup *.ps *.dvi *.ilg *.lof *.lot
+ @rm -f *.cdx *.cnd *.ddx *.ddn *.fdx *.fnd *.ind *.sdx *.snd
+ @rm -f *.dnd imagename_translations
+ @rm -f *.old WARNINGS *.out *.toc *.idx
+ @rm -f ${DOC}i-*.tex
+ @rm -rf ${DOC}
+
+
+distclean: clean
+ @rm -f images.pl labels.pl internals.pl
+ @rm -f Makefile version.tex
--- /dev/null
+\newfont{\bighead}{cmr17 at 36pt}
+\parskip 10pt
+\parindent 0pt
+
+\title{\includegraphics{\idir bacula-logo.eps} \\ \bigskip
+ \Huge{Bacula}$^{\normalsize \textregistered}$ \Huge{Miscellaneous Guide}
+ \begin{center}
+ \large{It comes in the night and sucks
+ the essence from your computers. }
+ \end{center}
+}
+
+
+\author{Kern Sibbald}
+\date{\vspace{1.0in}\today \\
+ This manual documents Bacula version \fullversion \\
+ \vspace{0.2in}
+ Copyright {\copyright} 1999-2009, Free Software Foundation Europe
+ e.V. \\
+ Bacula {\textregistered} is a registered trademark of Kern Sibbald.\\
+ \vspace{0.2in}
+ Permission is granted to copy, distribute and/or modify this document under the terms of the
+ GNU Free Documentation License, Version 1.2 published by the Free Software Foundation;
+ with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
+ A copy of the license is included in the section entitled "GNU Free Documentation License".
+}
+
+\maketitle
--- /dev/null
+#
+# Avoid that @VERSION@ and @DATE@ are changed by configure
+# This file is sourced by update_version
+#
+echo "s%@VERSION@%${VERSION}%g" >${out}
+echo "s%@DATE@%${DATE}%g" >>${out}
--- /dev/null
+%%
+%%
+
+\chapter{DVD Volumes}
+\label{_DVDChapterStart}
+\index[general]{DVD Volumes}
+\index[general]{Writing DVDs}
+\index[general]{DVD Writing}
+\index[general]{Volumes!DVD}
+
+Bacula allows you to specify that you want to write to DVD. However,
+this feature is implemented only in version 1.37 or later.
+You may in fact write to DVD+RW, DVD+R, DVD-R, or DVD-RW
+media. The actual process used by Bacula is to first write
+the image to a spool directory, then when the Volume reaches
+a certain size or, at your option, at the end of a Job, Bacula
+will transfer the image from the spool directory to the
+DVD. The actual work of transferring the image is done
+by a script {\bf dvd-handler}, and the heart of that
+script is a program called {\bf growisofs} which allows
+creating or adding to a DVD ISO filesystem.
+
+You must have {\bf dvd+rw-tools} loaded on your system for DVD writing to
+work. Please note that the original {\bf dvd+rw-tools} package does {\bf
+NOT} work with Bacula. You must apply a patch which can be found in the
+{\bf patches} directory of Bacula sources with the name
+{\bf dvd+rw-tools-5.21.4.10.8.bacula.patch} for version 5.21 of the tools,
+or patch {bf dvd+rw-tools-6.1.bacula.patch} if you have version 6.1
+on your system. Unfortunately, this requires you to build the dvd\_rw-tools
+from source.
+
+Note, some Linux distros such as Debian dvd+rw-tools-7.0-4 package already
+have the patch applied, so please check.
+
+The fact that Bacula cannot use the OS to write directly
+to the DVD makes the whole process a bit more error prone than
+writing to a disk or a tape, but nevertheless, it does work if you
+use some care to set it up properly. However, at the current time
+(version 1.39.30 -- 12 December 2006) we still consider this code to be
+BETA quality. As a consequence, please do careful testing before relying
+on DVD backups in production.
+
+The remainder of this chapter explains the various directives that you can
+use to control the DVD writing.
+
+\label{DVDdirectives}
+\section{DVD Specific SD Directives}
+\index[general]{Directives!DVD}
+\index[general]{DVD Specific SD Directives }
+
+The following directives are added to the Storage daemon's
+Device resource.
+
+\begin{description}
+
+\item [Requires Mount = {\it Yes|No}]
+ \index[general]{Requires Mount }
+ You must set this directive to {\bf yes} for DVD-writers, and to {\bf no} for
+ all other devices (tapes/files). This directive indicates if the device
+ requires to be mounted using the {\bf Mount Command}.
+ To be able to write a DVD, the following directives must also be
+ defined: {\bf Mount Point}, {\bf Mount Command}, {\bf Unmount Command} and
+ {\bf Write Part Command}.
+
+\item [Mount Point = {\it directory}]
+ \index[general]{Mount Point}
+ Directory where the device can be mounted.
+
+\item [Mount Command = {\it name-string}]
+ \index[general]{Mount Command}
+ Command that must be executed to mount the device. Although the
+ device is written directly, the mount command is necessary in
+ order to determine the free space left on the DVD. Before the command is
+ executed, \%a is replaced with the Archive Device, and \%m with the Mount
+ Point.
+
+ Most frequently, you will define it as follows:
+
+\footnotesize
+\begin{verbatim}
+ Mount Command = "/bin/mount -t iso9660 -o ro %a %m"
+\end{verbatim}
+\normalsize
+
+However, if you have defined a mount point in /etc/fstab, you might be
+able to use a mount command such as:
+
+\footnotesize
+\begin{verbatim}
+ Mount Command = "/bin/mount /media/dvd"
+\end{verbatim}
+\normalsize
+
+
+\item [Unmount Command = {\it name-string}]
+ \index[general]{Unmount Command}
+ Command that must be executed to unmount the device. Before the command is
+ executed, \%a is replaced with the Archive Device, and \%m with the Mount
+ Point.
+
+ Most frequently, you will define it as follows:
+
+\footnotesize
+\begin{verbatim}
+ Unmount Command = "/bin/umount %m"
+\end{verbatim}
+\normalsize
+
+\item [Write Part Command = {\it name-string}]
+ \index[general]{Write Part Command }
+ Command that must be executed to write a part to the device. Before the
+ command is executed, \%a is replaced with the Archive Device, \%m with the
+ Mount Point, \%e is replaced with 1 if we are writing the first part,
+ and with 0 otherwise, and \%v with the current part filename.
+
+ For a DVD, you will most frequently specify the Bacula supplied {\bf
+ dvd-handler} script as follows:
+
+\footnotesize
+\begin{verbatim}
+ Write Part Command = "/path/dvd-handler %a write %e %v"
+\end{verbatim}
+\normalsize
+
+ Where {\bf /path} is the path to your scripts install directory, and
+ dvd-handler is the Bacula supplied script file.
+ This command will already be present, but commented out,
+ in the default bacula-sd.conf file. To use it, simply remove
+ the comment (\#) symbol.
+
+
+\item [Free Space Command = {\it name-string}]
+ \index[general]{Free Space Command }
+ Command that must be executed to check how much free space is left on the
+ device. Before the command is executed,\%a is replaced with the Archive
+ Device.
+
+ For a DVD, you will most frequently specify the Bacula supplied {\bf
+ dvd-handler} script as follows:
+
+\footnotesize
+\begin{verbatim}
+ Free Space Command = "/path/dvd-handler %a free"
+\end{verbatim}
+\normalsize
+
+ Where {\bf /path} is the path to your scripts install directory, and
+ dvd-handler is the Bacula supplied script file.
+ If you want to specify your own command, please look at the code in
+ dvd-handler to see what output Bacula expects from this command.
+ This command will already be present, but commented out,
+ in the default bacula-sd.conf file. To use it, simply remove
+ the comment (\#) symbol.
+
+ If you do not set it, Bacula will expect there is always free space on the
+ device.
+
+\end{description}
+
+In addition to the directives specified above, you must also
+specify the other standard Device resource directives. Please see the
+sample DVD Device resource in the default bacula-sd.conf file. Be sure
+to specify the raw device name for {\bf Archive Device}. It should
+be a name such as {\bf /dev/cdrom} or {\bf /media/cdrecorder} or
+{\bf /dev/dvd} depending on your system. It will not be a name such
+as {\bf /mnt/cdrom}.
+
+Finally, for {\bf growisofs} to work, it must be able to lock
+a certain amount of memory in RAM. If you have restrictions on
+this function, you may have failures. Under {\bf bash}, you can
+set this with the following command:
+
+\footnotesize
+\begin{verbatim}
+ulimit -l unlimited
+\end{verbatim}
+\normalsize
+
+\section{Edit Codes for DVD Directives}
+\index[general]{Directives!DVD Edit Codes}
+\index[general]{Edit Codes for DVD Directives }
+
+Before submitting the {\bf Mount Command}, {\bf Unmount Command},
+{\bf Write Part Command}, or {\bf Free Space Command} directives
+to the operating system, Bacula performs character substitution of the
+following characters:
+
+\footnotesize
+\begin{verbatim}
+ %% = %
+ %a = Archive device name
+ %e = erase (set if cannot mount and first part)
+ %n = part number
+ %m = mount point
+ %v = last part name (i.e. filename)
+\end{verbatim}
+\normalsize
+
+
+
+\section{DVD Specific Director Directives}
+\index[general]{Directives!DVD}
+\index[general]{DVD Specific Director Directives }
+
+The following directives are added to the Director's Job resource.
+
+\label{WritePartAfterJob}
+\begin{description}
+\item [Write Part After Job = \lt{}yes|no\gt{}]
+ \index[general]{Write Part After Job }
+ If this directive is set to {\bf yes} (default {\bf no}), the
+ Volume written to a temporary spool file for the current Job will
+ be written to the DVD as a new part file
+ will be created after the job is finished.
+
+ It should be set to {\bf yes} when writing to devices that require a mount
+ (for example DVD), so you are sure that the current part, containing
+ this job's data, is written to the device, and that no data is left in
+ the temporary file on the hard disk. However, on some media, like DVD+R
+ and DVD-R, a lot of space (about 10Mb) is lost everytime a part is
+ written. So, if you run several jobs each after another, you could set
+ this directive to {\bf no} for all jobs, except the last one, to avoid
+ wasting too much space, but to ensure that the data is written to the
+ medium when all jobs are finished.
+
+ This directive is ignored for devices other than DVDs.
+\end{description}
+
+
+
+\label{DVDpoints}
+\section{Other Points}
+\index[general]{Points!Other }
+\index[general]{Other Points }
+
+\begin{itemize}
+\item Please be sure that you have any automatic DVD mounting
+ disabled before running Bacula -- this includes auto mounting
+ in /etc/fstab, hotplug, ... If the DVD is automatically
+ mounted by the OS, it will cause problems when Bacula tries
+ to mount/unmount the DVD.
+\item Please be sure that you the directive {\bf Write Part After Job}
+ set to {\bf yes}, otherwise the last part of the data to be
+ written will be left in the DVD spool file and not written to
+ the DVD. The DVD will then be unreadable until this last part
+ is written. If you have a series of jobs that are run one at
+ a time, you can turn this off until the last job is run.
+\item The current code is not designed to have multiple simultaneous
+ jobs writing to the DVD. As a consequence, please ensure that
+ only one DVD backup job runs at any time.
+\item Writing and reading of DVD+RW seems to work quite reliably
+ provided you are using the patched dvd+rw-mediainfo programs.
+ On the other hand, we do not have enough information to ensure
+ that DVD-RW or other forms of DVDs work correctly.
+\item DVD+RW supports only about 1000 overwrites. Every time you
+ mount the filesystem read/write will count as one write. This can
+ add up quickly, so it is best to mount your DVD+RW filesystem read-only.
+ Bacula does not need the DVD to be mounted read-write, since it uses
+ the raw device for writing.
+\item Reformatting DVD+RW 10-20 times can apparently make the medium
+ unusable. Normally you should not have to format or reformat
+ DVD+RW media. If it is necessary, current versions of growisofs will
+ do so automatically.
+\item We have had several problems writing to DVD-RWs (this does NOT
+ concern DVD+RW), because these media have two writing-modes: {\bf
+ Incremental Sequential} and {\bf Restricted Overwrite}. Depending on
+ your device and the media you use, one of these modes may not work
+ correctly (e.g. {\bf Incremental Sequential} does not work with my NEC
+ DVD-writer and Verbatim DVD-RW).
+
+ To retrieve the current mode of a DVD-RW, run:
+\begin{verbatim}
+ dvd+rw-mediainfo /dev/xxx
+\end{verbatim}
+ where you replace xxx with your DVD device name.
+
+ {\bf Mounted Media} line should give you the information.
+
+ To set the device to {\bf Restricted Overwrite} mode, run:
+\begin{verbatim}
+ dvd+rw-format /dev/xxx
+\end{verbatim}
+ If you want to set it back to the default {\bf Incremental Sequential} mode, run:
+\begin{verbatim}
+ dvd+rw-format -blank /dev/xxx
+\end{verbatim}
+
+\item Bacula only accepts to write to blank DVDs. To quickly blank a DVD+/-RW, run
+ this command:
+\begin{verbatim}
+ dd if=/dev/zero bs=1024 count=512 | growisofs -Z /dev/xxx=/dev/fd/0
+\end{verbatim}
+ Then, try to mount the device, if it cannot be mounted, it will be considered
+ as blank by Bacula, if it can be mounted, try a full blank (see below).
+
+\item If you wish to blank completely a DVD+/-RW, use the following:
+\begin{verbatim}
+ growisofs -Z /dev/xxx=/dev/zero
+\end{verbatim}
+ where you replace xxx with your DVD device name. However, note that this
+ blanks the whole DVD, which takes quite a long time (16 minutes on mine).
+\item DVD+RW and DVD-RW support only about 1000 overwrites (i.e. don't use the
+same medium for years if you don't want to have problems...).
+
+To write to the DVD the first time use:
+\begin{verbatim}
+ growisofs -Z /dev/xxx filename
+\end{verbatim}
+
+To add additional files (more parts use):
+
+\begin{verbatim}
+ growisofs -M /dev/xxx filename
+\end{verbatim}
+
+The option {\bf -use-the-force-luke=4gms} was added in growisofs 5.20 to
+override growisofs' behavior of always checking for the 4GB limit.
+Normally, this option is recommended for all Linux 2.6.8 kernels or
+greater, since these newer kernels can handle writing more than 4GB.
+See below for more details on this subject.
+
+\item For more information about DVD writing, please look at the
+\elink{dvd+rw-tools homepage}{http://fy.chalmers.se/~appro/linux/DVD+RW/}.
+
+\item According to bug \#912, bscan cannot read multi-volume DVDs. This is
+on our TODO list, but unless someone submits a patch it is not likely to be
+done any time in the near future. (9 Sept 2007).
+
+\end{itemize}
--- /dev/null
+% TODO: maybe get rid of centering
+
+\chapter{GNU Free Documentation License}
+\index[general]{GNU Free Documentation License}
+\index[general]{License!GNU Free Documentation}
+
+\label{label_fdl}
+
+ \begin{center}
+
+ Version 1.2, November 2002
+
+
+ Copyright \copyright 2000,2001,2002 Free Software Foundation, Inc.
+
+ \bigskip
+
+ 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+ \bigskip
+
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+\end{center}
+
+
+\begin{center}
+{\bf\large Preamble}
+\end{center}
+
+The purpose of this License is to make a manual, textbook, or other
+functional and useful document "free" in the sense of freedom: to
+assure everyone the effective freedom to copy and redistribute it,
+with or without modifying it, either commercially or noncommercially.
+Secondarily, this License preserves for the author and publisher a way
+to get credit for their work, while not being considered responsible
+for modifications made by others.
+
+This License is a kind of "copyleft", which means that derivative
+works of the document must themselves be free in the same sense. It
+complements the GNU General Public License, which is a copyleft
+license designed for free software.
+
+We have designed this License in order to use it for manuals for free
+software, because free software needs free documentation: a free
+program should come with manuals providing the same freedoms that the
+software does. But this License is not limited to software manuals;
+it can be used for any textual work, regardless of subject matter or
+whether it is published as a printed book. We recommend this License
+principally for works whose purpose is instruction or reference.
+
+
+\begin{center}
+{\Large\bf 1. APPLICABILITY AND DEFINITIONS}
+\end{center}
+
+This License applies to any manual or other work, in any medium, that
+contains a notice placed by the copyright holder saying it can be
+distributed under the terms of this License. Such a notice grants a
+world-wide, royalty-free license, unlimited in duration, to use that
+work under the conditions stated herein. The \textbf{"Document"}, below,
+refers to any such manual or work. Any member of the public is a
+licensee, and is addressed as \textbf{"you"}. You accept the license if you
+copy, modify or distribute the work in a way requiring permission
+under copyright law.
+
+A \textbf{"Modified Version"} of the Document means any work containing the
+Document or a portion of it, either copied verbatim, or with
+modifications and/or translated into another language.
+
+A \textbf{"Secondary Section"} is a named appendix or a front-matter section of
+the Document that deals exclusively with the relationship of the
+publishers or authors of the Document to the Document's overall subject
+(or to related matters) and contains nothing that could fall directly
+within that overall subject. (Thus, if the Document is in part a
+textbook of mathematics, a Secondary Section may not explain any
+mathematics.) The relationship could be a matter of historical
+connection with the subject or with related matters, or of legal,
+commercial, philosophical, ethical or political position regarding
+them.
+
+The \textbf{"Invariant Sections"} are certain Secondary Sections whose titles
+are designated, as being those of Invariant Sections, in the notice
+that says that the Document is released under this License. If a
+section does not fit the above definition of Secondary then it is not
+allowed to be designated as Invariant. The Document may contain zero
+Invariant Sections. If the Document does not identify any Invariant
+Sections then there are none.
+
+The \textbf{"Cover Texts"} are certain short passages of text that are listed,
+as Front-Cover Texts or Back-Cover Texts, in the notice that says that
+the Document is released under this License. A Front-Cover Text may
+be at most 5 words, and a Back-Cover Text may be at most 25 words.
+
+A \textbf{"Transparent"} copy of the Document means a machine-readable copy,
+represented in a format whose specification is available to the
+general public, that is suitable for revising the document
+straightforwardly with generic text editors or (for images composed of
+pixels) generic paint programs or (for drawings) some widely available
+drawing editor, and that is suitable for input to text formatters or
+for automatic translation to a variety of formats suitable for input
+to text formatters. A copy made in an otherwise Transparent file
+format whose markup, or absence of markup, has been arranged to thwart
+or discourage subsequent modification by readers is not Transparent.
+An image format is not Transparent if used for any substantial amount
+of text. A copy that is not "Transparent" is called \textbf{"Opaque"}.
+
+Examples of suitable formats for Transparent copies include plain
+ASCII without markup, Texinfo input format, LaTeX input format, SGML
+or XML using a publicly available DTD, and standard-conforming simple
+HTML, PostScript or PDF designed for human modification. Examples of
+transparent image formats include PNG, XCF and JPG. Opaque formats
+include proprietary formats that can be read and edited only by
+proprietary word processors, SGML or XML for which the DTD and/or
+processing tools are not generally available, and the
+machine-generated HTML, PostScript or PDF produced by some word
+processors for output purposes only.
+
+The \textbf{"Title Page"} means, for a printed book, the title page itself,
+plus such following pages as are needed to hold, legibly, the material
+this License requires to appear in the title page. For works in
+formats which do not have any title page as such, "Title Page" means
+the text near the most prominent appearance of the work's title,
+preceding the beginning of the body of the text.
+
+A section \textbf{"Entitled XYZ"} means a named subunit of the Document whose
+title either is precisely XYZ or contains XYZ in parentheses following
+text that translates XYZ in another language. (Here XYZ stands for a
+specific section name mentioned below, such as \textbf{"Acknowledgements"},
+\textbf{"Dedications"}, \textbf{"Endorsements"}, or \textbf{"History"}.)
+To \textbf{"Preserve the Title"}
+of such a section when you modify the Document means that it remains a
+section "Entitled XYZ" according to this definition.
+
+The Document may include Warranty Disclaimers next to the notice which
+states that this License applies to the Document. These Warranty
+Disclaimers are considered to be included by reference in this
+License, but only as regards disclaiming warranties: any other
+implication that these Warranty Disclaimers may have is void and has
+no effect on the meaning of this License.
+
+
+\begin{center}
+{\Large\bf 2. VERBATIM COPYING}
+\end{center}
+
+You may copy and distribute the Document in any medium, either
+commercially or noncommercially, provided that this License, the
+copyright notices, and the license notice saying this License applies
+to the Document are reproduced in all copies, and that you add no other
+conditions whatsoever to those of this License. You may not use
+technical measures to obstruct or control the reading or further
+copying of the copies you make or distribute. However, you may accept
+compensation in exchange for copies. If you distribute a large enough
+number of copies you must also follow the conditions in section 3.
+
+You may also lend copies, under the same conditions stated above, and
+you may publicly display copies.
+
+
+\begin{center}
+{\Large\bf 3. COPYING IN QUANTITY}
+\end{center}
+
+
+If you publish printed copies (or copies in media that commonly have
+printed covers) of the Document, numbering more than 100, and the
+Document's license notice requires Cover Texts, you must enclose the
+copies in covers that carry, clearly and legibly, all these Cover
+Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on
+the back cover. Both covers must also clearly and legibly identify
+you as the publisher of these copies. The front cover must present
+the full title with all words of the title equally prominent and
+visible. You may add other material on the covers in addition.
+Copying with changes limited to the covers, as long as they preserve
+the title of the Document and satisfy these conditions, can be treated
+as verbatim copying in other respects.
+
+If the required texts for either cover are too voluminous to fit
+legibly, you should put the first ones listed (as many as fit
+reasonably) on the actual cover, and continue the rest onto adjacent
+pages.
+
+If you publish or distribute Opaque copies of the Document numbering
+more than 100, you must either include a machine-readable Transparent
+copy along with each Opaque copy, or state in or with each Opaque copy
+a computer-network location from which the general network-using
+public has access to download using public-standard network protocols
+a complete Transparent copy of the Document, free of added material.
+If you use the latter option, you must take reasonably prudent steps,
+when you begin distribution of Opaque copies in quantity, to ensure
+that this Transparent copy will remain thus accessible at the stated
+location until at least one year after the last time you distribute an
+Opaque copy (directly or through your agents or retailers) of that
+edition to the public.
+
+It is requested, but not required, that you contact the authors of the
+Document well before redistributing any large number of copies, to give
+them a chance to provide you with an updated version of the Document.
+
+
+\begin{center}
+{\Large\bf 4. MODIFICATIONS}
+\end{center}
+
+You may copy and distribute a Modified Version of the Document under
+the conditions of sections 2 and 3 above, provided that you release
+the Modified Version under precisely this License, with the Modified
+Version filling the role of the Document, thus licensing distribution
+and modification of the Modified Version to whoever possesses a copy
+of it. In addition, you must do these things in the Modified Version:
+
+\begin{itemize}
+\item[A.]
+ Use in the Title Page (and on the covers, if any) a title distinct
+ from that of the Document, and from those of previous versions
+ (which should, if there were any, be listed in the History section
+ of the Document). You may use the same title as a previous version
+ if the original publisher of that version gives permission.
+
+\item[B.]
+ List on the Title Page, as authors, one or more persons or entities
+ responsible for authorship of the modifications in the Modified
+ Version, together with at least five of the principal authors of the
+ Document (all of its principal authors, if it has fewer than five),
+ unless they release you from this requirement.
+
+\item[C.]
+ State on the Title page the name of the publisher of the
+ Modified Version, as the publisher.
+
+\item[D.]
+ Preserve all the copyright notices of the Document.
+
+\item[E.]
+ Add an appropriate copyright notice for your modifications
+ adjacent to the other copyright notices.
+
+\item[F.]
+ Include, immediately after the copyright notices, a license notice
+ giving the public permission to use the Modified Version under the
+ terms of this License, in the form shown in the Addendum below.
+
+\item[G.]
+ Preserve in that license notice the full lists of Invariant Sections
+ and required Cover Texts given in the Document's license notice.
+
+\item[H.]
+ Include an unaltered copy of this License.
+
+\item[I.]
+ Preserve the section Entitled "History", Preserve its Title, and add
+ to it an item stating at least the title, year, new authors, and
+ publisher of the Modified Version as given on the Title Page. If
+ there is no section Entitled "History" in the Document, create one
+ stating the title, year, authors, and publisher of the Document as
+ given on its Title Page, then add an item describing the Modified
+ Version as stated in the previous sentence.
+
+\item[J.]
+ Preserve the network location, if any, given in the Document for
+ public access to a Transparent copy of the Document, and likewise
+ the network locations given in the Document for previous versions
+ it was based on. These may be placed in the "History" section.
+ You may omit a network location for a work that was published at
+ least four years before the Document itself, or if the original
+ publisher of the version it refers to gives permission.
+
+\item[K.]
+ For any section Entitled "Acknowledgements" or "Dedications",
+ Preserve the Title of the section, and preserve in the section all
+ the substance and tone of each of the contributor acknowledgements
+ and/or dedications given therein.
+
+\item[L.]
+ Preserve all the Invariant Sections of the Document,
+ unaltered in their text and in their titles. Section numbers
+ or the equivalent are not considered part of the section titles.
+
+\item[M.]
+ Delete any section Entitled "Endorsements". Such a section
+ may not be included in the Modified Version.
+
+\item[N.]
+ Do not retitle any existing section to be Entitled "Endorsements"
+ or to conflict in title with any Invariant Section.
+
+\item[O.]
+ Preserve any Warranty Disclaimers.
+\end{itemize}
+
+If the Modified Version includes new front-matter sections or
+appendices that qualify as Secondary Sections and contain no material
+copied from the Document, you may at your option designate some or all
+of these sections as invariant. To do this, add their titles to the
+list of Invariant Sections in the Modified Version's license notice.
+These titles must be distinct from any other section titles.
+
+You may add a section Entitled "Endorsements", provided it contains
+nothing but endorsements of your Modified Version by various
+parties--for example, statements of peer review or that the text has
+been approved by an organization as the authoritative definition of a
+standard.
+
+You may add a passage of up to five words as a Front-Cover Text, and a
+passage of up to 25 words as a Back-Cover Text, to the end of the list
+of Cover Texts in the Modified Version. Only one passage of
+Front-Cover Text and one of Back-Cover Text may be added by (or
+through arrangements made by) any one entity. If the Document already
+includes a cover text for the same cover, previously added by you or
+by arrangement made by the same entity you are acting on behalf of,
+you may not add another; but you may replace the old one, on explicit
+permission from the previous publisher that added the old one.
+
+The author(s) and publisher(s) of the Document do not by this License
+give permission to use their names for publicity for or to assert or
+imply endorsement of any Modified Version.
+
+
+\begin{center}
+{\Large\bf 5. COMBINING DOCUMENTS}
+\end{center}
+
+
+You may combine the Document with other documents released under this
+License, under the terms defined in section 4 above for modified
+versions, provided that you include in the combination all of the
+Invariant Sections of all of the original documents, unmodified, and
+list them all as Invariant Sections of your combined work in its
+license notice, and that you preserve all their Warranty Disclaimers.
+
+The combined work need only contain one copy of this License, and
+multiple identical Invariant Sections may be replaced with a single
+copy. If there are multiple Invariant Sections with the same name but
+different contents, make the title of each such section unique by
+adding at the end of it, in parentheses, the name of the original
+author or publisher of that section if known, or else a unique number.
+Make the same adjustment to the section titles in the list of
+Invariant Sections in the license notice of the combined work.
+
+In the combination, you must combine any sections Entitled "History"
+in the various original documents, forming one section Entitled
+"History"; likewise combine any sections Entitled "Acknowledgements",
+and any sections Entitled "Dedications". You must delete all sections
+Entitled "Endorsements".
+
+\begin{center}
+{\Large\bf 6. COLLECTIONS OF DOCUMENTS}
+\end{center}
+
+You may make a collection consisting of the Document and other documents
+released under this License, and replace the individual copies of this
+License in the various documents with a single copy that is included in
+the collection, provided that you follow the rules of this License for
+verbatim copying of each of the documents in all other respects.
+
+You may extract a single document from such a collection, and distribute
+it individually under this License, provided you insert a copy of this
+License into the extracted document, and follow this License in all
+other respects regarding verbatim copying of that document.
+
+
+\begin{center}
+{\Large\bf 7. AGGREGATION WITH INDEPENDENT WORKS}
+\end{center}
+
+
+A compilation of the Document or its derivatives with other separate
+and independent documents or works, in or on a volume of a storage or
+distribution medium, is called an "aggregate" if the copyright
+resulting from the compilation is not used to limit the legal rights
+of the compilation's users beyond what the individual works permit.
+When the Document is included in an aggregate, this License does not
+apply to the other works in the aggregate which are not themselves
+derivative works of the Document.
+
+If the Cover Text requirement of section 3 is applicable to these
+copies of the Document, then if the Document is less than one half of
+the entire aggregate, the Document's Cover Texts may be placed on
+covers that bracket the Document within the aggregate, or the
+electronic equivalent of covers if the Document is in electronic form.
+Otherwise they must appear on printed covers that bracket the whole
+aggregate.
+
+
+\begin{center}
+{\Large\bf 8. TRANSLATION}
+\end{center}
+
+
+Translation is considered a kind of modification, so you may
+distribute translations of the Document under the terms of section 4.
+Replacing Invariant Sections with translations requires special
+permission from their copyright holders, but you may include
+translations of some or all Invariant Sections in addition to the
+original versions of these Invariant Sections. You may include a
+translation of this License, and all the license notices in the
+Document, and any Warranty Disclaimers, provided that you also include
+the original English version of this License and the original versions
+of those notices and disclaimers. In case of a disagreement between
+the translation and the original version of this License or a notice
+or disclaimer, the original version will prevail.
+
+If a section in the Document is Entitled "Acknowledgements",
+"Dedications", or "History", the requirement (section 4) to Preserve
+its Title (section 1) will typically require changing the actual
+title.
+
+
+\begin{center}
+{\Large\bf 9. TERMINATION}
+\end{center}
+
+
+You may not copy, modify, sublicense, or distribute the Document except
+as expressly provided for under this License. Any other attempt to
+copy, modify, sublicense or distribute the Document is void, and will
+automatically terminate your rights under this License. However,
+parties who have received copies, or rights, from you under this
+License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+
+\begin{center}
+{\Large\bf 10. FUTURE REVISIONS OF THIS LICENSE}
+\end{center}
+
+
+The Free Software Foundation may publish new, revised versions
+of the GNU Free Documentation License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns. See
+http://www.gnu.org/copyleft/.
+
+Each version of the License is given a distinguishing version number.
+If the Document specifies that a particular numbered version of this
+License "or any later version" applies to it, you have the option of
+following the terms and conditions either of that specified version or
+of any later version that has been published (not as a draft) by the
+Free Software Foundation. If the Document does not specify a version
+number of this License, you may choose any version ever published (not
+as a draft) by the Free Software Foundation.
+
+
+\begin{center}
+{\Large\bf ADDENDUM: How to use this License for your documents}
+% TODO: this is too long for table of contents
+\end{center}
+
+To use this License in a document you have written, include a copy of
+the License in the document and put the following copyright and
+license notices just after the title page:
+
+\bigskip
+\begin{quote}
+ Copyright \copyright YEAR YOUR NAME.
+ Permission is granted to copy, distribute and/or modify this document
+ under the terms of the GNU Free Documentation License, Version 1.2
+ or any later version published by the Free Software Foundation;
+ with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
+ A copy of the license is included in the section entitled "GNU
+ Free Documentation License".
+\end{quote}
+\bigskip
+
+If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
+replace the "with...Texts." line with this:
+
+\bigskip
+\begin{quote}
+ with the Invariant Sections being LIST THEIR TITLES, with the
+ Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.
+\end{quote}
+\bigskip
+
+If you have Invariant Sections without Cover Texts, or some other
+combination of the three, merge those two alternatives to suit the
+situation.
+
+If your document contains nontrivial examples of program code, we
+recommend releasing these examples in parallel under your choice of
+free software license, such as the GNU General Public License,
+to permit their use in free software.
+
+%---------------------------------------------------------------------
--- /dev/null
+%%
+%%
+
+\section*{GNU General Public License}
+\label{GplChapter}
+\index[general]{GNU General Public License }
+\index[general]{License!GNU General Public }
+
+\elink{image of a Philosophical
+GNU}{http://www.gnu.org/graphics/philosophicalgnu.html}
+
+\begin{itemize}
+\item
+ \elink{What to do if you see a possible GPL
+ violation}{http://www.gnu.org/copyleft/gpl-violation.html}
+\item
+ \elink{Translations of the
+ GPL}{http://www.gnu.org/copyleft/copyleft.html\#translations}
+\end{itemize}
+
+
+\section{Table of Contents}
+\index[general]{Table of Contents }
+\index[general]{Contents!Table of }
+
+\begin{itemize}
+\item
+ \label{TOC1}
+ \ilink{GNU GENERAL PUBLIC LICENSE}{SEC1}
+
+\begin{itemize}
+\item
+ \label{TOC2}
+ \ilink{Preamble}{SEC2}
+\item
+ \label{TOC3}
+ \ilink{TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND
+MODIFICATION}{SEC3}
+\item
+ \label{TOC4}
+ \ilink{How to Apply These Terms to Your New Programs}{SEC4}
+\end{itemize}
+
+\end{itemize}
+
+
+\section{GNU GENERAL PUBLIC LICENSE}
+\label{SEC1}
+\index[general]{GNU GENERAL PUBLIC LICENSE }
+\index[general]{LICENSE!GNU GENERAL PUBLIC }
+
+Version 2, June 1991
+
+\footnotesize
+\begin{verbatim}
+Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+\end{verbatim}
+\normalsize
+
+\section{Preamble}
+\label{SEC2}
+\index[general]{Preamble }
+
+The licenses for most software are designed to take away your freedom to share
+and change it. By contrast, the GNU General Public License is intended to
+guarantee your freedom to share and change free software\verb:--:to make sure the
+software is free for all its users. This General Public License applies to
+most of the Free Software Foundation's software and to any other program whose
+authors commit to using it. (Some other Free Software Foundation software is
+covered by the GNU Library General Public License instead.) You can apply it
+to your programs, too.
+
+When we speak of free software, we are referring to freedom, not price. Our
+General Public Licenses are designed to make sure that you have the freedom to
+distribute copies of free software (and charge for this service if you wish),
+that you receive source code or can get it if you want it, that you can change
+the software or use pieces of it in new free programs; and that you know you
+can do these things.
+
+To protect your rights, we need to make restrictions that forbid anyone to
+deny you these rights or to ask you to surrender the rights. These
+restrictions translate to certain responsibilities for you if you distribute
+copies of the software, or if you modify it.
+
+For example, if you distribute copies of such a program, whether gratis or for
+a fee, you must give the recipients all the rights that you have. You must
+make sure that they, too, receive or can get the source code. And you must
+show them these terms so they know their rights.
+
+We protect your rights with two steps: (1) copyright the software, and (2)
+offer you this license which gives you legal permission to copy, distribute
+and/or modify the software.
+
+Also, for each author's protection and ours, we want to make certain that
+everyone understands that there is no warranty for this free software. If the
+software is modified by someone else and passed on, we want its recipients to
+know that what they have is not the original, so that any problems introduced
+by others will not reflect on the original authors' reputations.
+
+Finally, any free program is threatened constantly by software patents. We
+wish to avoid the danger that redistributors of a free program will
+individually obtain patent licenses, in effect making the program proprietary.
+To prevent this, we have made it clear that any patent must be licensed for
+everyone's free use or not licensed at all.
+
+The precise terms and conditions for copying, distribution and modification
+follow.
+
+\section{TERMS AND CONDITIONS}
+\label{SEC3}
+\index[general]{CONDITIONS!TERMS AND }
+\index[general]{TERMS AND CONDITIONS }
+
+TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+{\bf 0.} This License applies to any program or other work which contains a
+notice placed by the copyright holder saying it may be distributed under the
+terms of this General Public License. The "Program", below, refers to any
+such program or work, and a "work based on the Program" means either the
+Program or any derivative work under copyright law: that is to say, a work
+containing the Program or a portion of it, either verbatim or with
+modifications and/or translated into another language. (Hereinafter,
+translation is included without limitation in the term "modification".) Each
+licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not covered
+by this License; they are outside its scope. The act of running the Program is
+not restricted, and the output from the Program is covered only if its
+contents constitute a work based on the Program (independent of having been
+made by running the Program). Whether that is true depends on what the Program
+does.
+
+{\bf 1.} You may copy and distribute verbatim copies of the Program's source
+code as you receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice and
+disclaimer of warranty; keep intact all the notices that refer to this License
+and to the absence of any warranty; and give any other recipients of the
+Program a copy of this License along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and you may
+at your option offer warranty protection in exchange for a fee.
+
+{\bf 2.} You may modify your copy or copies of the Program or any portion of
+it, thus forming a work based on the Program, and copy and distribute such
+modifications or work under the terms of Section 1 above, provided that you
+also meet all of these conditions:
+
+\begin{itemize}
+\item {\bf a)} You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+\item {\bf b)} You must cause any work that you distribute or publish, that
+ in whole or in part contains or is derived from the Program or any part
+ thereof, to be licensed as a whole at no charge to all third parties under
+ the terms of this License.
+
+\item {\bf c)} If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such interactive use in
+ the most ordinary way, to print or display an announcement including an
+ appropriate copyright notice and a notice that there is no warranty (or else,
+ saying that you provide a warranty) and that users may redistribute the
+ program under these conditions, and telling the user how to view a copy of
+ this License. (Exception: if the Program itself is interactive but does not
+ normally print such an announcement, your work based on the Program is not
+ required to print an announcement.)
+\end{itemize}
+
+These requirements apply to the modified work as a whole. If identifiable
+sections of that work are not derived from the Program, and can be reasonably
+considered independent and separate works in themselves, then this License,
+and its terms, do not apply to those sections when you distribute them as
+separate works. But when you distribute the same sections as part of a whole
+which is a work based on the Program, the distribution of the whole must be on
+the terms of this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest your
+rights to work written entirely by you; rather, the intent is to exercise the
+right to control the distribution of derivative or collective works based on
+the Program.
+
+In addition, mere aggregation of another work not based on the Program with
+the Program (or with a work based on the Program) on a volume of a storage or
+distribution medium does not bring the other work under the scope of this
+License.
+
+{\bf 3.} You may copy and distribute the Program (or a work based on it, under
+Section 2) in object code or executable form under the terms of Sections 1 and
+2 above provided that you also do one of the following:
+
+\begin{itemize}
+\item {\bf a)} Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections 1 and 2
+ above on a medium customarily used for software interchange; or,
+
+\item {\bf b)} Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your cost of
+ physically performing source distribution, a complete machine-readable copy of
+ the corresponding source code, to be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+\item {\bf c)} Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is allowed only
+ for noncommercial distribution and only if you received the program in object
+ code or executable form with such an offer, in accord with Subsection b
+ above.)
+\end{itemize}
+
+The source code for a work means the preferred form of the work for making
+modifications to it. For an executable work, complete source code means all
+the source code for all modules it contains, plus any associated interface
+definition files, plus the scripts used to control compilation and
+installation of the executable. However, as a special exception, the source
+code distributed need not include anything that is normally distributed (in
+either source or binary form) with the major components (compiler, kernel, and
+so on) of the operating system on which the executable runs, unless that
+component itself accompanies the executable.
+
+If distribution of executable or object code is made by offering access to
+copy from a designated place, then offering equivalent access to copy the
+source code from the same place counts as distribution of the source code,
+even though third parties are not compelled to copy the source along with the
+object code.
+
+{\bf 4.} You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt otherwise to
+copy, modify, sublicense or distribute the Program is void, and will
+automatically terminate your rights under this License. However, parties who
+have received copies, or rights, from you under this License will not have
+their licenses terminated so long as such parties remain in full compliance.
+
+{\bf 5.} You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or distribute
+the Program or its derivative works. These actions are prohibited by law if
+you do not accept this License. Therefore, by modifying or distributing the
+Program (or any work based on the Program), you indicate your acceptance of
+this License to do so, and all its terms and conditions for copying,
+distributing or modifying the Program or works based on it.
+
+{\bf 6.} Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the original
+licensor to copy, distribute or modify the Program subject to these terms and
+conditions. You may not impose any further restrictions on the recipients'
+exercise of the rights granted herein. You are not responsible for enforcing
+compliance by third parties to this License.
+
+{\bf 7.} If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or otherwise)
+that contradict the conditions of this License, they do not excuse you from
+the conditions of this License. If you cannot distribute so as to satisfy
+simultaneously your obligations under this License and any other pertinent
+obligations, then as a consequence you may not distribute the Program at all.
+For example, if a patent license would not permit royalty-free redistribution
+of the Program by all those who receive copies directly or indirectly through
+you, then the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under any
+particular circumstance, the balance of the section is intended to apply and
+the section as a whole is intended to apply in other circumstances.
+
+It is not the purpose of this section to induce you to infringe any patents or
+other property right claims or to contest validity of any such claims; this
+section has the sole purpose of protecting the integrity of the free software
+distribution system, which is implemented by public license practices. Many
+people have made generous contributions to the wide range of software
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+system; it is up to the author/donor to decide if he or she is willing to
+distribute software through any other system and a licensee cannot impose that
+choice.
+
+This section is intended to make thoroughly clear what is believed to be a
+consequence of the rest of this License.
+
+{\bf 8.} If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the original
+copyright holder who places the Program under this License may add an explicit
+geographical distribution limitation excluding those countries, so that
+distribution is permitted only in or among countries not thus excluded. In
+such case, this License incorporates the limitation as if written in the body
+of this License.
+
+{\bf 9.} The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will be
+similar in spirit to the present version, but may differ in detail to address
+new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any later
+version", you have the option of following the terms and conditions either of
+that version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of this License,
+you may choose any version ever published by the Free Software Foundation.
+
+{\bf 10.} If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author to
+ask for permission. For software which is copyrighted by the Free Software
+Foundation, write to the Free Software Foundation; we sometimes make
+exceptions for this. Our decision will be guided by the two goals of
+preserving the free status of all derivatives of our free software and of
+promoting the sharing and reuse of software generally.
+
+{\bf NO WARRANTY}
+
+{\bf 11.} BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE
+THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR
+IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO
+THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM
+PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+CORRECTION.
+
+{\bf 12.} IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO
+LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR
+THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+END OF TERMS AND CONDITIONS
+
+\section{How to Apply These Terms to Your New Programs}
+\label{SEC4}
+\index[general]{Programs!How to Apply These Terms to Your New }
+\index[general]{How to Apply These Terms to Your New Programs }
+
+If you develop a new program, and you want it to be of the greatest possible
+use to the public, the best way to achieve this is to make it free software
+which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach
+them to the start of each source file to most effectively convey the exclusion
+of warranty; and each file should have at least the "copyright" line and a
+pointer to where the full notice is found.
+
+\footnotesize
+\begin{verbatim}
+{\em one line to give the program's name and an idea of what it does.}
+Copyright (C) {\em yyyy} {\em name of author}
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+02110-1301 USA
+\end{verbatim}
+\normalsize
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this when it
+starts in an interactive mode:
+
+\footnotesize
+\begin{verbatim}
+Gnomovision version 69, Copyright (C) {\em year} {\em name of author}
+Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
+type `show w'. This is free software, and you are welcome
+to redistribute it under certain conditions; type `show c'
+for details.
+\end{verbatim}
+\normalsize
+
+The hypothetical commands {\tt `show w'} and {\tt `show c'} should show the
+appropriate parts of the General Public License. Of course, the commands you
+use may be called something other than {\tt `show w'} and {\tt `show c'}; they
+could even be mouse-clicks or menu items\verb:--:whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+\footnotesize
+\begin{verbatim}
+Yoyodyne, Inc., hereby disclaims all copyright
+interest in the program `Gnomovision'
+(which makes passes at compilers) written
+by James Hacker.
+{\em signature of Ty Coon}, 1 April 1989
+Ty Coon, President of Vice
+\end{verbatim}
+\normalsize
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General Public
+License instead of this License.
+Return to
+\elink{GNU's home page}{http://www.gnu.org/home.html}.
+
+FSF \& GNU inquiries \& questions to
+\elink{gnu@gnu.org}{mailto:gnu@gnu.org}. Other
+\elink{ways to contact}{http://www.gnu.org/home.html\#ContactInfo} the FSF.
+
+Comments on these web pages to
+\elink{webmasters@www.gnu.org}{mailto:webmasters@www.gnu.org}, send other
+questions to
+\elink{gnu@gnu.org}{mailto:gnu@gnu.org}.
+
+Copyright notice above.
+Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+Boston, MA 02110-1301 USA
+
+Updated: 3 Jan 2000 rms
--- /dev/null
+# This file serves as a place to put initialization code and constants to
+# affect the behavior of latex2html for generating the bacula manuals.
+
+# $LINKPOINT specifies what filename to use to link to when creating
+# index.html. Not that this is a hard link.
+$LINKPOINT='"$OVERALL_TITLE"';
+
+
+# The following must be the last line of this file.
+1;
--- /dev/null
+%%
+%%
+
+\section*{GNU Lesser General Public License}
+\label{LesserChapter}
+\index[general]{GNU Lesser General Public License }
+\index[general]{License!GNU Lesser General Public }
+
+\elink{image of a Philosophical GNU}
+{\url{http://www.gnu.org/graphics/philosophicalgnu.html}} [
+\elink{English}{\url{http://www.gnu.org/copyleft/lesser.html}} |
+\elink{Japanese}{\url{http://www.gnu.org/copyleft/lesser.ja.html}} ]
+
+\begin{itemize}
+\item
+ \elink{Why you shouldn't use the Lesser GPL for your next
+ library}{\url{http://www.gnu.org/philosophy/why-not-lgpl.html}}
+\item
+ \elink{What to do if you see a possible LGPL
+ violation}{\url{http://www.gnu.org/copyleft/gpl-violation.html}}
+\item
+ \elink{Translations of the LGPL}
+{\url{http://www.gnu.org/copyleft/copyleft.html\#translationsLGPL}}
+\item The GNU Lesser General Public License as a
+ \elink{text file}{\url{http://www.gnu.org/copyleft/lesser.txt}}
+\item The GNU Lesser General Public License as a
+ \elink{Texinfo}{\url{http://www.gnu.org/copyleft/lesser.texi}} file
+ \end{itemize}
+
+
+This GNU Lesser General Public License counts as the successor of the GNU
+Library General Public License. For an explanation of why this change was
+necessary, read the
+\elink{Why you shouldn't use the Lesser GPL for your next
+library}{\url{http://www.gnu.org/philosophy/why-not-lgpl.html}} article.
+
+\section{Table of Contents}
+\index[general]{Table of Contents }
+\index[general]{Contents!Table of }
+
+\begin{itemize}
+\item
+ \label{TOC12}
+ \ilink{GNU LESSER GENERAL PUBLIC LICENSE}{SEC12}
+
+\begin{itemize}
+\item
+ \label{TOC23}
+ \ilink{Preamble}{SEC23}
+\item
+ \label{TOC34}
+ \ilink{TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND
+MODIFICATION}{SEC34}
+\item
+ \label{TOC45}
+ \ilink{How to Apply These Terms to Your New Libraries}{SEC45}
+\end{itemize}
+
+\end{itemize}
+
+
+\section{GNU LESSER GENERAL PUBLIC LICENSE}
+\label{SEC12}
+\index[general]{LICENSE!GNU LESSER GENERAL PUBLIC }
+\index[general]{GNU LESSER GENERAL PUBLIC LICENSE }
+
+Version 2.1, February 1999
+
+\footnotesize
+\begin{verbatim}
+Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+[This is the first released version of the Lesser GPL. It also counts
+ as the successor of the GNU Library Public License, version 2, hence
+ the version number 2.1.]
+\end{verbatim}
+\normalsize
+
+\section{Preamble}
+\label{SEC23}
+\index[general]{Preamble }
+
+The licenses for most software are designed to take away your freedom to share
+and change it. By contrast, the GNU General Public Licenses are intended to
+guarantee your freedom to share and change free software\verb:--:to make sure the
+software is free for all its users.
+
+This license, the Lesser General Public License, applies to some specially
+designated software packages\verb:--:typically libraries\verb:--:of the Free Software
+Foundation and other authors who decide to use it. You can use it too, but we
+suggest you first think carefully about whether this license or the ordinary
+General Public License is the better strategy to use in any particular case,
+based on the explanations below.
+
+When we speak of free software, we are referring to freedom of use, not price.
+Our General Public Licenses are designed to make sure that you have the
+freedom to distribute copies of free software (and charge for this service if
+you wish); that you receive source code or can get it if you want it; that you
+can change the software and use pieces of it in new free programs; and that
+you are informed that you can do these things.
+
+To protect your rights, we need to make restrictions that forbid distributors
+to deny you these rights or to ask you to surrender these rights. These
+restrictions translate to certain responsibilities for you if you distribute
+copies of the library or if you modify it.
+
+For example, if you distribute copies of the library, whether gratis or for a
+fee, you must give the recipients all the rights that we gave you. You must
+make sure that they, too, receive or can get the source code. If you link
+other code with the library, you must provide complete object files to the
+recipients, so that they can relink them with the library after making changes
+to the library and recompiling it. And you must show them these terms so they
+know their rights.
+
+We protect your rights with a two-step method: (1) we copyright the library,
+and (2) we offer you this license, which gives you legal permission to copy,
+distribute and/or modify the library.
+
+To protect each distributor, we want to make it very clear that there is no
+warranty for the free library. Also, if the library is modified by someone
+else and passed on, the recipients should know that what they have is not the
+original version, so that the original author's reputation will not be
+affected by problems that might be introduced by others.
+
+Finally, software patents pose a constant threat to the existence of any free
+program. We wish to make sure that a company cannot effectively restrict the
+users of a free program by obtaining a restrictive license from a patent
+holder. Therefore, we insist that any patent license obtained for a version of
+the library must be consistent with the full freedom of use specified in this
+license.
+
+Most GNU software, including some libraries, is covered by the ordinary GNU
+General Public License. This license, the GNU Lesser General Public License,
+applies to certain designated libraries, and is quite different from the
+ordinary General Public License. We use this license for certain libraries in
+order to permit linking those libraries into non-free programs.
+
+When a program is linked with a library, whether statically or using a shared
+library, the combination of the two is legally speaking a combined work, a
+derivative of the original library. The ordinary General Public License
+therefore permits such linking only if the entire combination fits its
+criteria of freedom. The Lesser General Public License permits more lax
+criteria for linking other code with the library.
+
+We call this license the "Lesser" General Public License because it does
+Less to protect the user's freedom than the ordinary General Public License.
+It also provides other free software developers Less of an advantage over
+competing non-free programs. These disadvantages are the reason we use the
+ordinary General Public License for many libraries. However, the Lesser
+license provides advantages in certain special circumstances.
+
+For example, on rare occasions, there may be a special need to encourage the
+widest possible use of a certain library, so that it becomes a de-facto
+standard. To achieve this, non-free programs must be allowed to use the
+library. A more frequent case is that a free library does the same job as
+widely used non-free libraries. In this case, there is little to gain by
+limiting the free library to free software only, so we use the Lesser General
+Public License.
+
+In other cases, permission to use a particular library in non-free programs
+enables a greater number of people to use a large body of free software. For
+example, permission to use the GNU C Library in non-free programs enables many
+more people to use the whole GNU operating system, as well as its variant, the
+GNU/Linux operating system.
+
+Although the Lesser General Public License is Less protective of the users'
+freedom, it does ensure that the user of a program that is linked with the
+Library has the freedom and the wherewithal to run that program using a
+modified version of the Library.
+
+The precise terms and conditions for copying, distribution and modification
+follow. Pay close attention to the difference between a "work based on the
+library" and a "work that uses the library". The former contains code
+derived from the library, whereas the latter must be combined with the library
+in order to run.
+
+\section{TERMS AND CONDITIONS}
+\label{SEC34}
+\index[general]{CONDITIONS!TERMS AND }
+\index[general]{TERMS AND CONDITIONS }
+
+TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+{\bf 0.} This License Agreement applies to any software library or other
+program which contains a notice placed by the copyright holder or other
+authorized party saying it may be distributed under the terms of this Lesser
+General Public License (also called "this License"). Each licensee is
+addressed as "you".
+
+A "library" means a collection of software functions and/or data prepared so
+as to be conveniently linked with application programs (which use some of
+those functions and data) to form executables.
+
+The "Library", below, refers to any such software library or work which has
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+
+"Source code" for a work means the preferred form of the work for making
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+code for all modules it contains, plus any associated interface definition
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+
+Activities other than copying, distribution and modification are not covered
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+the use of the Library in a tool for writing it). Whether that is true depends
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+
+{\bf 1.} You may copy and distribute verbatim copies of the Library's complete
+source code as you receive it, in any medium, provided that you conspicuously
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+
+You may charge a fee for the physical act of transferring a copy, and you may
+at your option offer warranty protection in exchange for a fee.
+
+{\bf 2.} You may modify your copy or copies of the Library or any portion of
+it, thus forming a work based on the Library, and copy and distribute such
+modifications or work under the terms of Section 1 above, provided that you
+also meet all of these conditions:
+
+\begin{itemize}
+\item {\bf a)} The modified work must itself be a software library.
+\item {\bf b)} You must cause the files modified to carry prominent notices
+ stating that you changed the files and the date of any change.
+\item {\bf c)} You must cause the whole of the work to be licensed at no
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+\item {\bf d)} If a facility in the modified Library refers to a function or
+ a table of data to be supplied by an application program that uses the
+ facility, other than as an argument passed when the facility is invoked, then
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+does not supply such function or table, the facility still operates, and
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+
+(For example, a function in a library to compute square roots has a purpose
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+
+These requirements apply to the modified work as a whole. If identifiable
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+
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+\end{itemize}
+
+{\bf 3.} You may opt to apply the terms of the ordinary GNU General Public
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+Do not make any other change in these notices.
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+Once this change is made in a given copy, it is irreversible for that copy, so
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+{\bf 4.} You may copy and distribute the Library (or a portion or derivative
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+{\bf 5.} A program that contains no derivative of any portion of the Library,
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+
+However, linking a "work that uses the Library" with the Library creates an
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+When a "work that uses the Library" uses material from a header file that is
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+
+\begin{itemize}
+\item {\bf a)} Accompany the work with the complete corresponding
+ machine-readable source code for the Library including whatever changes were
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+\item {\bf b)} Use a suitable shared library mechanism for linking with the
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+modified version is interface-compatible with the version that the work was
+made with.
+\item {\bf c)} Accompany the work with a written offer, valid for at least
+ three years, to give the same user the materials specified in Subsection 6a,
+ above, for a charge no more than the cost of performing this distribution.
+\item {\bf d)} If distribution of the work is made by offering access to copy
+ from a designated place, offer equivalent access to copy the above specified
+ materials from the same place.
+\item {\bf e)} Verify that the user has already received a copy of these
+ materials or that you have already sent this user a copy.
+ \end{itemize}
+
+For an executable, the required form of the "work that uses the Library"
+must include any data and utility programs needed for reproducing the
+executable from it. However, as a special exception, the materials to be
+distributed need not include anything that is normally distributed (in either
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+of the operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+It may happen that this requirement contradicts the license restrictions of
+other proprietary libraries that do not normally accompany the operating
+system. Such a contradiction means you cannot use both them and the Library
+together in an executable that you distribute.
+
+{\bf 7.} You may place library facilities that are a work based on the Library
+side-by-side in a single library together with other library facilities not
+covered by this License, and distribute such a combined library, provided that
+the separate distribution of the work based on the Library and of the other
+library facilities is otherwise permitted, and provided that you do these two
+things:
+
+\begin{itemize}
+\item {\bf a)} Accompany the combined library with a copy of the same work
+ based on the Library, uncombined with any other library facilities. This must
+ be distributed under the terms of the Sections above.
+\item {\bf b)} Give prominent notice with the combined library of the fact
+ that part of it is a work based on the Library, and explaining where to find
+ the accompanying uncombined form of the same work.
+\end{itemize}
+
+{\bf 8.} You may not copy, modify, sublicense, link with, or distribute the
+Library except as expressly provided under this License. Any attempt otherwise
+to copy, modify, sublicense, link with, or distribute the Library is void, and
+will automatically terminate your rights under this License. However, parties
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+their licenses terminated so long as such parties remain in full compliance.
+
+{\bf 9.} You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or distribute
+the Library or its derivative works. These actions are prohibited by law if
+you do not accept this License. Therefore, by modifying or distributing the
+Library (or any work based on the Library), you indicate your acceptance of
+this License to do so, and all its terms and conditions for copying,
+distributing or modifying the Library or works based on it.
+
+{\bf 10.} Each time you redistribute the Library (or any work based on the
+Library), the recipient automatically receives a license from the original
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+terms and conditions. You may not impose any further restrictions on the
+recipients' exercise of the rights granted herein. You are not responsible for
+enforcing compliance by third parties with this License.
+
+{\bf 11.} If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or otherwise)
+that contradict the conditions of this License, they do not excuse you from
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+For example, if a patent license would not permit royalty-free redistribution
+of the Library by all those who receive copies directly or indirectly through
+you, then the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Library.
+
+If any portion of this section is held invalid or unenforceable under any
+particular circumstance, the balance of the section is intended to apply, and
+the section as a whole is intended to apply in other circumstances.
+
+It is not the purpose of this section to induce you to infringe any patents or
+other property right claims or to contest validity of any such claims; this
+section has the sole purpose of protecting the integrity of the free software
+distribution system which is implemented by public license practices. Many
+people have made generous contributions to the wide range of software
+distributed through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing to
+distribute software through any other system and a licensee cannot impose that
+choice.
+
+This section is intended to make thoroughly clear what is believed to be a
+consequence of the rest of this License.
+
+{\bf 12.} If the distribution and/or use of the Library is restricted in
+certain countries either by patents or by copyrighted interfaces, the original
+copyright holder who places the Library under this License may add an explicit
+geographical distribution limitation excluding those countries, so that
+distribution is permitted only in or among countries not thus excluded. In
+such case, this License incorporates the limitation as if written in the body
+of this License.
+
+{\bf 13.} The Free Software Foundation may publish revised and/or new versions
+of the Lesser General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Library
+specifies a version number of this License which applies to it and "any later
+version", you have the option of following the terms and conditions either of
+that version or of any later version published by the Free Software
+Foundation. If the Library does not specify a license version number, you may
+choose any version ever published by the Free Software Foundation.
+
+{\bf 14.} If you wish to incorporate parts of the Library into other free
+programs whose distribution conditions are incompatible with these, write to
+the author to ask for permission. For software which is copyrighted by the
+Free Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals of
+preserving the free status of all derivatives of our free software and of
+promoting the sharing and reuse of software generally.
+
+{\bf NO WARRANTY}
+
+{\bf 15.} BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE
+THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR
+IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO
+THE QUALITY AND PERFORMANCE OF THE LIBRARY IS WITH YOU. SHOULD THE LIBRARY
+PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+CORRECTION.
+
+{\bf 16.} IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE LIBRARY (INCLUDING BUT NOT LIMITED TO
+LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR
+THIRD PARTIES OR A FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+END OF TERMS AND CONDITIONS
+
+\section{How to Apply These Terms to Your New Libraries}
+\label{SEC45}
+\index[general]{Libraries!How to Apply These Terms to Your New }
+\index[general]{How to Apply These Terms to Your New Libraries }
+
+
+If you develop a new library, and you want it to be of the greatest possible
+use to the public, we recommend making it free software that everyone can
+redistribute and change. You can do so by permitting redistribution under
+these terms (or, alternatively, under the terms of the ordinary General Public
+License).
+
+To apply these terms, attach the following notices to the library. It is
+safest to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+\footnotesize
+\begin{verbatim}
+{\it one line to give the library's name and an idea of what it does.}
+Copyright (C) {\it year} {\it name of author}
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Lesser General Public License for more details.
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+\end{verbatim}
+\normalsize
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the library, if
+necessary. Here is a sample; alter the names:
+
+\footnotesize
+\begin{verbatim}
+Yoyodyne, Inc., hereby disclaims all copyright interest in
+the library "Frob" (a library for tweaking knobs) written
+by James Random Hacker.
+{\it signature of Ty Coon}, 1 April 1990
+Ty Coon, President of Vice
+\end{verbatim}
+\normalsize
+
+That's all there is to it!
+Return to
+\elink{GNU's home page}{\url{http://www.gnu.org/home.html}}.
+
+FSF \& GNU inquiries \& questions to
+\elink{gnu@gnu.org}{mailto:gnu@gnu.org}. Other
+\elink{ways to contact}{\url{http://www.gnu.org/home.html\#ContactInfo}} the FSF.
+
+Comments on these web pages to
+\elink{webmasters@www.gnu.org}{mailto:webmasters@www.gnu.org}, send other
+questions to
+\elink{gnu@gnu.org}{mailto:gnu@gnu.org}.
+
+Copyright notice above.
+Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+Boston, MA 02110-1301 USA
+USA
+
+Updated: 27 Nov 2000 paulv
--- /dev/null
+%%
+%%
+
+\chapter{Bacula Copyright, Trademark, and Licenses}
+\label{LicenseChapter}
+\index[general]{Licenses!Bacula Copyright Trademark}
+\index[general]{Bacula Copyright, Trademark, and Licenses}
+
+There are a number of different licenses that are used in Bacula.
+If you have a printed copy of this manual, the details of each of
+the licenses referred to in this chapter can be found in the
+online version of the manual at
+\elink{http://www.bacula.org}{\url{http://www.bacula.org}}.
+
+\section{FDL}
+\index[general]{FDL }
+
+The GNU Free Documentation License (FDL) is used for this manual,
+which is a free and open license. This means that you may freely
+reproduce it and even make changes to it. However, rather than
+distribute your own version of this manual, we would much prefer
+if you would send any corrections or changes to the Bacula project.
+
+The most recent version of the manual can always be found online
+at \elink{http://www.bacula.org}{\url{http://www.bacula.org}}.
+
+\section{GPL}
+\index[general]{GPL }
+
+The vast bulk of the source code is released under the
+\ilink{GNU General Public License version 2.}{GplChapter}.
+
+Most of this code is copyrighted: Copyright \copyright 2000-2009
+Free Software Foundation Europe e.V.
+
+Portions may be copyrighted by other people. These files are released
+under different licenses which are compatible with the Bacula GPLv2 license.
+
+\section{LGPL}
+\index[general]{LGPL }
+
+Some of the Bacula library source code is released under the
+\ilink{GNU Lesser General Public License.}{LesserChapter} This
+permits third parties to use these parts of our code in their proprietary
+programs to interface to Bacula.
+
+\section{Public Domain}
+\index[general]{Domain!Public }
+\index[general]{Public Domain }
+
+Some of the Bacula code, or code that Bacula references, has been released
+to the public domain. E.g. md5.c, SQLite.
+
+\section{Trademark}
+\index[general]{Trademark }
+
+Bacula\raisebox{.6ex}{\textsuperscript{\textregistered}} is a registered
+trademark of Kern Sibbald.
+
+We have trademarked the Bacula name to ensure that any program using the
+name Bacula will be exactly compatible with the program that we have
+released. The use of the name Bacula is restricted to software systems
+that agree exactly with the program presented here. If you have made
+modifications to the Bacula source code that alter in any significant
+way the way the program functions, you may not distribute it using the
+Bacula name.
+
+\section{Fiduciary License Agreement}
+\index[general]{Fiduciary License Agreement }
+Developers who have contributed significant changes to the Bacula code
+should have signed a Fiduciary License Agreement (FLA), which
+guarantees them the right to use the code they have developed, and also
+ensures that the Free Software Foundation Europe (and thus the Bacula
+project) has the rights to the code. This Fiduciary License Agreement
+is found on the Bacula web site at:
+
+\elink{http://www.bacula.org/en/FLA-bacula.en.pdf}{\url{http://www.bacula.org/en/FLA-bacula.en.pdf}}
+
+and if you are submitting code, you should fill it out then sent to:
+
+\begin{quote}
+ Kern Sibbald \\
+ Cotes-de-Montmoiret 9 \\
+ 1012 Lausanne \\
+ Switzerland \\
+\end{quote}
+
+When you send in such a
+complete document, please notify me: kern at sibbald dot com.
+
+
+\section{Disclaimer}
+\index[general]{Disclaimer }
+
+NO WARRANTY
+
+BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE
+PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
+STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE
+PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
+PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE,
+YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY
+COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE
+PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE
+OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR
+DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR
+A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH
+HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
--- /dev/null
+[General]
+img_extIsRegExp=false
+img_extensions=.eps .jpg .jpeg .png .pdf .ps .fig .gif
+kileprversion=2
+kileversion=2.0
+lastDocument=stunnel.tex
+masterDocument=misc.tex
+name=Misc
+pkg_extIsRegExp=false
+pkg_extensions=.cls .sty
+src_extIsRegExp=false
+src_extensions=.tex .ltx .latex .dtx .ins
+
+[Tools]
+MakeIndex=
+QuickBuild=
+
+[item:coverpage.tex]
+archive=true
+column=33
+encoding=UTF-8
+highlight=LaTeX
+line=0
+open=false
+order=-1
+
+[item:dvd.tex]
+archive=true
+column=0
+encoding=UTF-8
+highlight=LaTeX
+line=56
+open=false
+order=-1
+
+[item:fdl.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:gpl.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:lesser.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:license.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:misc.tex]
+archive=true
+column=59
+encoding=UTF-8
+highlight=LaTeX
+line=45
+open=true
+order=0
+
+[item:projects.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:python.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
+
+[item:stunnel.tex]
+archive=true
+column=0
+encoding=UTF-8
+highlight=LaTeX
+line=0
+open=true
+order=1
+
+[item:vars.tex]
+archive=true
+column=0
+encoding=UTF-8
+highlight=LaTeX
+line=48
+open=false
+order=-1
+
+[item:version.tex]
+archive=true
+column=0
+encoding=
+highlight=
+line=0
+open=false
+order=-1
--- /dev/null
+%%
+%%
+%% The following characters must be preceded by a backslash
+%% to be entered as printable characters:
+%%
+%% # $ % & ~ _ ^ \ { }
+%%
+
+\documentclass[10pt,a4paper]{book}
+
+\topmargin -0.5in
+\oddsidemargin 0.0in
+\evensidemargin 0.0in
+\textheight 10in
+\textwidth 6.5in
+
+
+\usepackage{html}
+\usepackage{float}
+\usepackage{graphicx}
+\usepackage{bacula}
+\usepackage{longtable}
+\usepackage{makeidx}
+\usepackage{index}
+\usepackage{setspace}
+\usepackage{hyperref}
+% \usepackage[linkcolor=black,colorlinks=true]{hyperref}
+\usepackage{url}
+
+\makeindex
+\newindex{general}{idx}{ind}{General Index}
+
+\sloppy
+
+\begin{document}
+\sloppy
+
+\include{coverpage}
+
+\clearpage
+\pagenumbering{roman}
+\tableofcontents
+\clearpage
+
+\pagestyle{myheadings}
+\markboth{Bacula Version \version}{Bacula Version \version}
+\pagenumbering{arabic}
+\include{python}
+\include{vars}
+\include{stunnel}
+\include{dvd}
+\include{projects}
+\include{license}
+\include{fdl}
+\include{gpl}
+\include{lesser}
+
+
+% pull in the index
+\clearpage
+\printindex[general]
+
+\end{document}
--- /dev/null
+%%
+%%
+
+\chapter{Bacula Projects}
+\label{ProjectsChapter}
+\index[general]{Projects!Bacula }
+\index[general]{Bacula Projects }
+
+Once a new major version of Bacula is released, the Bacula
+users will vote on a list of new features. This vote is used
+as the main element determining what new features will be
+implemented for the next version. Generally, the development time
+for a new release is between four to nine months. Sometimes it may be
+a bit longer, but in that case, there will be a number of bug fix
+updates to the currently released version.
+
+For the current list of project, please see the projects page in the CVS
+at: \elink{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/projects}
+{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/projects}
+see the {\bf projects} file in the main source directory. The projects
+file is updated approximately once every six months.
+
+Separately from the project list, Kern maintains a current list of
+tasks as well as ideas, feature requests, and occasionally design
+notes. This list is updated roughly weekly (sometimes more often).
+For a current list of tasks you can see {\bf kernstodo} in the Source Forge
+CVS at \elink{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/kernstodo}
+{http://cvs.sourceforge.net/viewcvs.py/*checkout*/bacula/bacula/kernstodo}.
--- /dev/null
+%%
+%%
+
+\chapter{Python Scripting}
+\label{PythonChapter}
+\index[general]{Python Scripting}
+\index[general]{Scripting!Python}
+
+You may be asking what Python is and why a scripting language is
+needed in Bacula. The answer to the first question is that Python
+is an Object Oriented scripting language with features similar
+to those found in Perl, but the syntax of the language is much
+cleaner and simpler. The answer to why have scripting in Bacula is to
+give the user more control over the whole backup process. Probably
+the simplest example is when Bacula needs a new Volume name, with
+a scripting language such as Python, you can generate any name
+you want, based on the current state of Bacula.
+
+\section{Python Configuration}
+\index[general]{Python Configuration}
+\index[general]{Configuration!Python}
+
+Python must be enabled during the configuration process by adding
+a \verb:--:with-python, and possibly specifying an alternate
+directory if your Python is not installed in a standard system
+location. If you are using RPMs you will need the python-devel package
+installed.
+
+When Python is configured, it becomes an integral part of Bacula and
+runs in Bacula's address space, so even though it is an interpreted
+language, it is very efficient.
+
+When the Director starts, it looks to see if you have a {\bf
+Scripts Directory} Directive defined (normal default {\bf
+/etc/bacula/scripts}, if so, it looks in that directory for a file named
+{\bf DirStartUp.py}. If it is found, Bacula will pass this file to Python
+for execution. The {\bf Scripts Directory} is a new directive that you add
+to the Director resource of your bacula-dir.conf file.
+
+Note: Bacula does not install Python scripts by default because these
+scripts are for you to program. This means that with a default
+installation with Python enabled, Bacula will print the following error
+message:
+
+\begin{verbatim}
+09-Jun 15:14 bacula-dir: ERROR in pythonlib.c:131 Could not import
+Python script /etc/bacula/scripts/DirStartUp. Python disabled.
+\end{verbatim}
+
+The source code directory {\bf examples/python} contains sample scripts
+for DirStartUp.py, SDStartUp.py, and FDStartUp.py that you might want
+to use as a starting point. Normally, your scripts directory (at least
+where you store the Python scripts) should be writable by Bacula, because
+Python will attempt to write a compiled version of the scripts (e.g.
+DirStartUp.pyc) back to that directory.
+
+When starting with the sample scripts, you can delete any part that
+you will not need, but you should keep all the Bacula Event and Job Event
+definitions. If you do not want a particular event, simply replace the
+existing code with a {\bf noop = 1}.
+
+\section{Bacula Events}
+\index[general]{Bacula Events}
+\index[general]{Events}
+A Bacula event is a point in the Bacula code where Bacula
+will call a subroutine (actually a method) that you have
+defined in the Python StartUp script. Events correspond
+to some significant event such as a Job Start, a Job End,
+Bacula needs a new Volume Name, ... When your script is
+called, it will have access to all the Bacula variables
+specific to the Job (attributes of the Job Object), and
+it can even call some of the Job methods (subroutines)
+or set new values in the Job attributes, such as the
+Priority. You will see below how the events are used.
+
+\section{Python Objects}
+\index[general]{Python Objects}
+\index[general]{Objects!Python}
+
+There are four Python objects that you will need to work with:
+\begin{description}
+\item [The Bacula Object]
+ The Bacula object is created by the Bacula daemon (the Director
+ in the present case) when the daemon starts. It is available to
+ the Python startup script, {\bf DirStartup.py}, by importing the
+ Bacula definitions with {\bf import bacula}. The methods
+ available with this object are described below.
+
+\item [The Bacula Events Class]
+ You create this class in the startup script, and you pass
+ it to the Bacula Object's {\bf set\_events} method. The
+ purpose of the Bacula Events Class is to define what global
+ or daemon events you want to monitor. When one of those events
+ occurs, your Bacula Events Class will be called at the method
+ corresponding to the event. There are currently three events,
+ JobStart, JobEnd, and Exit, which are described in detail below.
+
+\item [The Job Object]
+ When a Job starts, and assuming you have defined a JobStart method
+ in your Bacula Events Class, Bacula will create a Job Object. This
+ object will be passed to the JobStart event. The Job Object has a
+ has good number of read-only members or attributes providing many
+ details of the Job, and it also has a number of writable attributes
+ that allow you to pass information into the Job. These attributes
+ are described below.
+
+\item [The Job Events Class]
+ You create this class in the JobStart method of your Bacula Events
+ class, and it allows you to define which of the possible Job Object
+ events you want to see. You must pass an instance of your Job Events
+ class to the Job Object set\_events() method.
+ Normally, you will probably only have one
+ Job Events Class, which will be instantiated for each Job. However,
+ if you wish to see different events in different Jobs, you may have
+ as many Job Events classes as you wish.
+\end{description}
+
+
+The first thing the startup script must do is to define what global Bacula
+events (daemon events), it wants to see. This is done by creating a
+Bacula Events class, instantiating it, then passing it to the
+{\bf set\_events} method. There are three possible
+events.
+
+\begin{description}
+\item [JobStart]
+ \index[general]{JobStart}
+ This Python method, if defined, will be called each time a Job is started.
+ The method is passed the class instantiation object as the first argument,
+ and the Bacula Job object as the second argument. The Bacula Job object
+ has several built-in methods, and you can define which ones you
+ want called. If you do not define this method, you will not be able
+ to interact with Bacula jobs.
+
+\item [JobEnd]
+ This Python method, if defined, will be called each time a Job terminates.
+ The method is passed the class instantiation object as the first argument,
+ and the Bacula Job object as the second argument.
+
+\item [Exit]
+ This Python method, if defined, will be called when the Director terminates.
+ The method is passed the class instantiation object as the first argument.
+\end{description}
+
+Access to the Bacula variables and methods is done with:
+
+ import bacula
+
+The following are the read-only attributes provided by the bacula object.
+\begin{description}
+\item [Name]
+\item [ConfigFile]
+\item [WorkingDir]
+\item [Version] string consisting of "Version Build-date"
+\end{description}
+
+
+A simple definition of the Bacula Events Class might be the following:
+
+\footnotesize
+\begin{verbatim}
+import sys, bacula
+class BaculaEvents:
+ def JobStart(self, job):
+ ...
+\end{verbatim}
+\normalsize
+
+Then to instantiate the class and pass it to Bacula, you
+would do:
+
+\footnotesize
+\begin{verbatim}
+bacula.set_events(BaculaEvents()) # register Bacula Events wanted
+\end{verbatim}
+\normalsize
+
+And at that point, each time a Job is started, your BaculaEvents JobStart
+method will be called.
+
+Now to actually do anything with a Job, you must define which Job events
+you want to see, and this is done by defining a JobEvents class containing
+the methods you want called. Each method name corresponds to one of the
+Job Events that Bacula will generate.
+
+A simple Job Events class might look like the following:
+
+\footnotesize
+\begin{verbatim}
+class JobEvents:
+ def NewVolume(self, job):
+ ...
+\end{verbatim}
+\normalsize
+
+Here, your JobEvents class method NewVolume will be called each time
+the Job needs a new Volume name. To actually register the events defined
+in your class with the Job, you must instantiate the JobEvents class and
+set it in the Job {\bf set\_events} variable. Note, this is a bit different
+from how you registered the Bacula events. The registration process must
+be done in the Bacula JobStart event (your method). So, you would modify
+Bacula Events (not the Job events) as follows:
+
+\footnotesize
+\begin{verbatim}
+import sys, bacula
+class BaculaEvents:
+ def JobStart(self, job):
+ events = JobEvents() # create instance of Job class
+ job.set_events(events) # register Job events desired
+ ...
+\end{verbatim}
+\normalsize
+
+When a job event is triggered, the appropriate event definition is
+called in the JobEvents class. This is the means by which your Python
+script or code gets control. Once it has control, it may read job
+attributes, or set them. See below for a list of read-only attributes,
+and those that are writable.
+
+In addition, the Bacula {\bf job} object in the Director has
+a number of methods (subroutines) that can be called. They
+are:
+\begin{description}
+\item [set\_events] The set\_events method takes a single
+ argument, which is the instantiation of the Job Events class
+ that contains the methods that you want called. The method
+ names that will be called must correspond to the Bacula
+ defined events. You may define additional methods but Bacula
+ will not use them.
+\item [run] The run method takes a single string
+ argument, which is the run command (same as in the Console)
+ that you want to submit to start a new Job. The value
+ returned by the run method is the JobId of the job that
+ started, or -1 if there was an error.
+\item [write] The write method is used to be able to send
+ print output to the Job Report. This will be described later.
+\item[cancel] The cancel method takes a single integer argument,
+ which is a JobId. If JobId is found, it will be canceled.
+\item [DoesVolumeExist] The DoesVolumeExist method takes a single
+ string argument, which is the Volume name, and returns
+ 1 if the volume exists in the Catalog and 0 if the volume
+ does not exist.
+\end{description}
+
+The following attributes are read/write within the Director
+for the {\bf job} object.
+
+\begin{description}
+\item [Priority] Read or set the Job priority.
+ Note, that setting a Job Priority is effective only before
+ the Job actually starts.
+\item [Level] This attribute contains a string representing the Job
+ level, e.g. Full, Differential, Incremental, ... if read.
+ The level can also be set.
+\end{description}
+
+The following read-only attributes are available within the Director
+for the {\bf job} object.
+
+\begin{description}
+\item [Type] This attribute contains a string representing the Job
+ type, e.g. Backup, Restore, Verify, ...
+\item [JobId] This attribute contains an integer representing the
+ JobId.
+\item [Client] This attribute contains a string with the name of the
+ Client for this job.
+\item [NumVols] This attribute contains an integer with the number of
+ Volumes in the Pool being used by the Job.
+\item [Pool] This attribute contains a string with the name of the Pool
+ being used by the Job.
+\item [Storage] This attribute contains a string with the name of the
+ Storage resource being used by the Job.
+\item [Catalog] This attribute contains a string with the name of the
+ Catalog resource being used by the Job.
+\item [MediaType] This attribute contains a string with the name of the
+ Media Type associated with the Storage resource being used by the Job.
+\item [Job] This attribute contains a string containing the name of the
+ Job resource used by this job (not unique).
+\item [JobName] This attribute contains a string representing the full
+ unique Job name.
+\item [JobStatus] This attribute contains a single character string
+ representing the current Job status. The status may change
+ during execution of the job. It may take on the following
+ values:
+ \begin{description}
+ \item [C] Created, not yet running
+ \item [R] Running
+ \item [B] Blocked
+ \item [T] Completed successfully
+ \item [E] Terminated with errors
+ \item [e] Non-fatal error
+ \item [f] Fatal error
+ \item [D] Verify found differences
+ \item [A] Canceled by user
+ \item [F] Waiting for Client
+ \item [S] Waiting for Storage daemon
+ \item [m] Waiting for new media
+ \item [M] Waiting for media mount
+ \item [s] Waiting for storage resource
+ \item [j] Waiting for job resource
+ \item [c] Waiting for client resource
+ \item [d] Waiting on maximum jobs
+ \item [t] Waiting on start time
+ \item [p] Waiting on higher priority jobs
+ \end{description}
+
+\item [Priority] This attribute contains an integer with the priority
+ assigned to the job.
+\item [CatalogRes] tuple consisting of (DBName, Address, User,
+ Password, Socket, Port, Database Vendor) taken from the Catalog resource
+ for the Job with the exception of Database Vendor, which is
+ one of the following: MySQL, PostgreSQL, SQLite, Internal,
+ depending on what database you configured.
+\item [VolumeName]
+ After a Volume has been purged, this attribute will contain the
+ name of that Volume. At other times, this value may have no meaning.
+\end{description}
+
+The following write-only attributes are available within the
+Director:
+
+\begin{description}
+\item [JobReport] Send line to the Job Report.
+\item [VolumeName] Set a new Volume name. Valid only during the
+ NewVolume event.
+\end{description}
+
+\section{Python Console Command}
+\index[general]{Python Console Command}
+\index[general]{Console Command!Python}
+
+There is a new Console command named {\bf python}. It takes
+a single argument {\bf restart}. Example:
+\begin{verbatim}
+ python restart
+\end{verbatim}
+
+This command restarts the Python interpreter in the Director.
+This can be useful when you are modifying the DirStartUp script,
+because normally Python will cache it, and thus the
+script will be read one time.
+
+\section{Debugging Python Scripts}
+\index[general]{Debugging Python Scripts}
+In general, you debug your Python scripts by using print statements.
+You can also develop your script or important parts of it as a
+separate file using the Python interpreter to run it. Once you
+have it working correctly, you can then call the script from
+within the Bacula Python script (DirStartUp.py).
+
+If you are having problems loading DirStartUp.py, you will probably
+not get any error messages because Bacula can only print Python
+error messages after the Python interpreter is started. However, you
+may be able to see the error messages by starting Bacula in
+a shell window with the {\bf -d1} option on the command line. That
+should cause the Python error messages to be printed in the shell
+window.
+
+If you are getting error messages such as the following when
+loading DirStartUp.py:
+
+\begin{verbatim}
+ Traceback (most recent call last):
+ File "/etc/bacula/scripts/DirStartUp.py", line 6, in ?
+ import time, sys, bacula
+ ImportError: /usr/lib/python2.3/lib-dynload/timemodule.so: undefined
+ symbol: PyInt_FromLong
+ bacula-dir: pythonlib.c:134 Python Import error.
+\end{verbatim}
+
+It is because the DirStartUp script is calling a dynamically loaded
+module (timemodule.so in the above case) that then tries to use
+Python functions exported from the Python interpreter (in this case
+PyInt\_FromLong). The way Bacula is currently linked with Python does
+not permit this. The solution to the problem is to put such functions
+(in this case the import of time into a separate Python script, which
+will do your calculations and return the values you want. Then call
+(not import) this script from the Bacula DirStartUp.py script, and
+it all should work as you expect.
+
+
+
+
+
+\section{Python Example}
+\index[general]{Python Example}
+\index[general]{Example!Python}
+
+An example script for the Director startup file is provided in
+{\bf examples/python/DirStartup.py} as follows:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula Python interface script for the Director
+#
+
+# You must import both sys and bacula
+import sys, bacula
+
+# This is the list of Bacula daemon events that you
+# can receive.
+class BaculaEvents(object):
+ def __init__(self):
+ # Called here when a new Bacula Events class is
+ # is created. Normally not used
+ noop = 1
+
+ def JobStart(self, job):
+ """
+ Called here when a new job is started. If you want
+ to do anything with the Job, you must register
+ events you want to receive.
+ """
+ events = JobEvents() # create instance of Job class
+ events.job = job # save Bacula's job pointer
+ job.set_events(events) # register events desired
+ sys.stderr = events # send error output to Bacula
+ sys.stdout = events # send stdout to Bacula
+ jobid = job.JobId; client = job.Client
+ numvols = job.NumVols
+ job.JobReport="Python Dir JobStart: JobId=%d Client=%s NumVols=%d\n" % (jobid,client,numvols)
+
+ # Bacula Job is going to terminate
+ def JobEnd(self, job):
+ jobid = job.JobId
+ client = job.Client
+ job.JobReport="Python Dir JobEnd output: JobId=%d Client=%s.\n" % (jobid, client)
+
+ # Called here when the Bacula daemon is going to exit
+ def Exit(self, job):
+ print "Daemon exiting."
+
+bacula.set_events(BaculaEvents()) # register daemon events desired
+
+"""
+ These are the Job events that you can receive.
+"""
+class JobEvents(object):
+ def __init__(self):
+ # Called here when you instantiate the Job. Not
+ # normally used
+ noop = 1
+
+ def JobInit(self, job):
+ # Called when the job is first scheduled
+ noop = 1
+
+ def JobRun(self, job):
+ # Called just before running the job after initializing
+ # This is the point to change most Job parameters.
+ # It is equivalent to the JobRunBefore point.
+ noop = 1
+
+ def NewVolume(self, job):
+ # Called when Bacula wants a new Volume name. The Volume
+ # name returned, if any, must be stored in job.VolumeName
+ jobid = job.JobId
+ client = job.Client
+ numvol = job.NumVols;
+ print job.CatalogRes
+ job.JobReport = "JobId=%d Client=%s NumVols=%d" % (jobid, client, numvol)
+ job.JobReport="Python before New Volume set for Job.\n"
+ Vol = "TestA-%d" % numvol
+ job.JobReport = "Exists=%d TestA-%d" % (job.DoesVolumeExist(Vol), numvol)
+ job.VolumeName="TestA-%d" % numvol
+ job.JobReport="Python after New Volume set for Job.\n"
+ return 1
+
+ def VolumePurged(self, job):
+ # Called when a Volume is purged. The Volume name can be referenced
+ # with job.VolumeName
+ noop = 1
+
+
+
+\end{verbatim}
+\normalsize
--- /dev/null
+%%
+%%
+
+\chapter{Using Stunnel to Encrypt Communications}
+\label{StunnelChapter}
+\index[general]{Using Stunnel to Encrypt Communications to Clients }
+
+Prior to version 1.37, Bacula did not have built-in communications encryption.
+Please see the \ilink {TLS chapter}{CommEncryption} if you are using Bacula
+1.37 or greater.
+
+Without too much effort, it is possible to encrypt the communications
+between any of the daemons. This chapter will show you how to use {\bf
+stunnel} to encrypt communications to your client programs. We assume the
+Director and the Storage daemon are running on one machine that will be called
+{\bf server} and the Client or File daemon is running on a different machine
+called {\bf client}. Although the details may be slightly different, the same
+principles apply whether you are encrypting between Unix, Linux, or Win32
+machines. This example was developed between two Linux machines running
+stunnel version 4.04-4 on a Red Hat Enterprise 3.0 system.
+
+\section{Communications Ports Used}
+\index[general]{Used!Communications Ports }
+\index[general]{Communications Ports Used }
+
+First, you must know that with the standard Bacula configuration, the Director
+will contact the File daemon on port 9102. The File daemon then contacts the
+Storage daemon using the address and port parameters supplied by the Director.
+The standard port used will be 9103. This is the typical server/client view of
+the world, the File daemon is a server to the Director (i.e. listens for the
+Director to contact it), and the Storage daemon is a server to the File
+daemon.
+
+\section{Encryption}
+\index[general]{Encryption }
+
+The encryption is accomplished between the Director and the File daemon by
+using an stunnel on the Director's machine (server) to encrypt the data and to
+contact an stunnel on the File daemon's machine (client), which decrypts the
+data and passes it to the client.
+
+Between the File daemon and the Storage daemon, we use an stunnel on the File
+daemon's machine to encrypt the data and another stunnel on the Storage
+daemon's machine to decrypt the data.
+
+As a consequence, there are actually four copies of stunnel running, two on the
+server and two on the client. This may sound a bit complicated, but it really
+isn't. To accomplish this, we will need to construct four separate conf files
+for stunnel, and we will need to make some minor modifications to the
+Director's conf file. None of the other conf files need to be changed.
+
+\section{A Picture}
+\index[general]{Picture }
+
+Since pictures usually help a lot, here is an overview of what we will be
+doing. Don't worry about all the details of the port numbers and such for the
+moment.
+
+\footnotesize
+\begin{verbatim}
+ File daemon (client):
+ stunnel-fd1.conf
+ |===========|
+ Port 29102 >----| Stunnel 1 |-----> Port 9102
+ |===========|
+ stunnel-fd2.conf
+ |===========|
+ Port 9103 >----| Stunnel 2 |-----> server:29103
+ |===========|
+ Director (server):
+ stunnel-dir.conf
+ |===========|
+ Port 29102 >----| Stunnel 3 |-----> client:29102
+ |===========|
+ stunnel-sd.conf
+ |===========|
+ Port 29103 >----| Stunnel 4 |-----> 9103
+ |===========|
+\end{verbatim}
+\normalsize
+
+\section{Certificates}
+\index[general]{Certificates }
+
+In order for stunnel to function as a server, which it does in our diagram for
+Stunnel 1 and Stunnel 4, you must have a certificate and the key. It is
+possible to keep the two in separate files, but normally, you keep them in one
+single .pem file. You may create this certificate yourself in which case, it
+will be self-signed, or you may have it signed by a CA.
+
+If you want your clients to verify that the server is in fact valid (Stunnel 2
+and Stunnel 3), you will need to have the server certificates signed by a CA
+(Certificate Authority), and you will need to have the CA's public certificate
+(contains the CA's public key).
+
+Having a CA signed certificate is {\bf highly} recommended if you are using
+your client across the Internet, otherwise you are exposed to the man in the
+middle attack and hence loss of your data.
+
+See below for how to create a self-signed certificate.
+
+\section{Securing the Data Channel}
+\index[general]{Channel!Securing the Data }
+\index[general]{Securing the Data Channel }
+
+To simplify things a bit, let's for the moment consider only the data channel.
+That is the connection between the File daemon and the Storage daemon, which
+takes place on port 9103. In fact, in a minimalist solution, this is the only
+connection that needs to be encrypted, because it is the one that transports your
+data. The connection between the Director and the File daemon is simply a
+control channel used to start the job and get the job status.
+
+Normally the File daemon will contact the Storage daemon on port 9103
+(supplied by the Director), so we need an stunnel that listens on port 9103 on
+the File daemon's machine, encrypts the data and sends it to the Storage
+daemon. This is depicted by Stunnel 2 above. Note that this stunnel is
+listening on port 9103 and sending to server:29103. We use port 29103 on the
+server because if we would send the data to port 9103, it would go directly to the
+Storage daemon, which doesn't understand encrypted data. On the server
+machine, we run Stunnel 4, which listens on port 29103, decrypts the data and
+sends it to the Storage daemon, which is listening on port 9103.
+
+\section{Data Channel Configuration}
+\index[general]{Modification of bacula-dir.conf for the Data Channel }
+\index[general]{baculoa-dir.conf!Modification for the Data Channel }
+
+The Storage resource of the bacula-dir.conf normally looks something like the
+following:
+
+\footnotesize
+\begin{verbatim}
+Storage {
+ Name = File
+ Address = server
+ SDPort = 9103
+ Password = storage_password
+ Device = File
+ Media Type = File
+}
+\end{verbatim}
+\normalsize
+
+Notice that this is running on the server machine, and it points the File
+daemon back to server:9103, which is where our Storage daemon is listening. We
+modify this to be:
+
+\footnotesize
+\begin{verbatim}
+Storage {
+ Name = File
+ Address = localhost
+ SDPort = 9103
+ Password = storage_password
+ Device = File
+ Media Type = File
+}
+\end{verbatim}
+\normalsize
+
+This causes the File daemon to send the data to the stunnel running on
+localhost (the client machine). We could have used client as the address as
+well.
+
+\section{Stunnel Configuration for the Data Channel}
+\index[general]{Stunnel Configuration for the Data Channel }
+
+In the diagram above, we see above Stunnel 2 that we use stunnel-fd2.conf on the
+client. A pretty much minimal config file would look like the following:
+
+\footnotesize
+\begin{verbatim}
+client = yes
+[29103]
+accept = localhost:9103
+connect = server:29103
+\end{verbatim}
+\normalsize
+
+The above config file does encrypt the data but it does not require a
+certificate, so it is subject to the man in the middle attack. The file I
+actually used, stunnel-fd2.conf, looked like this:
+
+\footnotesize
+\begin{verbatim}
+#
+# Stunnel conf for Bacula client -> SD
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29103]
+accept = localhost:9103
+connect = server:29103
+\end{verbatim}
+\normalsize
+
+You will notice that I specified a pid file location because I ran stunnel
+under my own userid so I could not use the default, which requires root
+permission. I also specified a certificate that I have as well as verify level
+2 so that the certificate is required and verified, and I must supply the
+location of the CA (Certificate Authority) certificate so that the stunnel
+certificate can be verified. Finally, you will see that there are two lines
+commented out, which when enabled, produce a lot of nice debug info in the
+command window.
+
+If you do not have a signed certificate (stunnel.pem), you need to delete the
+cert, CAfile, and verify lines.
+
+Note that the stunnel.pem, is actually a private key and a certificate in a
+single file. These two can be kept and specified individually, but keeping
+them in one file is more convenient.
+
+The config file, stunnel-sd.conf, needed for Stunnel 4 on the server machine
+is:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for Storage daemon
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is mandatory here, it may be self signed
+# If it is self signed, the client may not use
+# verify
+#
+cert = /home/kern/stunnel/stunnel.pem
+client = no
+# debug = 7
+# foreground = yes
+[29103]
+accept = 29103
+connect = 9103
+\end{verbatim}
+\normalsize
+
+\section{Starting and Testing the Data Encryption}
+\index[general]{Starting and Testing the Data Encryption }
+\index[general]{Encryption!Starting and Testing the Data }
+
+It will most likely be the simplest to implement the Data Channel encryption
+in the following order:
+
+\begin{itemize}
+\item Setup and run Bacula backing up some data on your client machine
+ without encryption.
+\item Stop Bacula.
+\item Modify the Storage resource in the Director's conf file.
+\item Start Bacula
+\item Start stunnel on the server with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-sd.conf
+
+\end{verbatim}
+\normalsize
+
+\item Start stunnel on the client with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-fd2.conf
+
+\end{verbatim}
+\normalsize
+
+\item Run a job.
+\item If it doesn't work, turn debug on in both stunnel conf files, restart
+ the stunnels, rerun the job, repeat until it works.
+ \end{itemize}
+
+\section{Encrypting the Control Channel}
+\index[general]{Channel!Encrypting the Control }
+\index[general]{Encrypting the Control Channel }
+
+The Job control channel is between the Director and the File daemon, and as
+mentioned above, it is not really necessary to encrypt, but it is good
+practice to encrypt it as well. The two stunnels that are used in this case
+will be Stunnel 1 and Stunnel 3 in the diagram above. Stunnel 3 on the server
+might normally listen on port 9102, but if you have a local File daemon, this
+will not work, so we make it listen on port 29102. It then sends the data to
+client:29102. Again we use port 29102 so that the stunnel on the client
+machine can decrypt the data before passing it on to port 9102 where the File
+daemon is listening.
+
+\section{Control Channel Configuration}
+\index[general]{Control Channel Configuration }
+
+We need to modify the standard Client resource, which would normally look
+something like:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client-fd
+ Address = client
+ FDPort = 9102
+ Catalog = BackupDB
+ Password = "xxx"
+}
+\end{verbatim}
+\normalsize
+
+to be:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client-fd
+ Address = localhost
+ FDPort = 29102
+ Catalog = BackupDB
+ Password = "xxx"
+}
+\end{verbatim}
+\normalsize
+
+This will cause the Director to send the control information to
+localhost:29102 instead of directly to the client.
+
+\section{Stunnel Configuration for the Control Channel}
+\index[general]{Config Files for stunnel to Encrypt the Control Channel }
+
+The stunnel config file, stunnel-dir.conf, for the Director's machine would
+look like the following:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for the Directory to contact a client
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29102]
+accept = localhost:29102
+connect = client:29102
+\end{verbatim}
+\normalsize
+
+and the config file, stunnel-fd1.conf, needed to run stunnel on the Client
+would be:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for the Directory to contact a client
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29102]
+accept = localhost:29102
+connect = client:29102
+\end{verbatim}
+\normalsize
+
+\section{Starting and Testing the Control Channel}
+\index[general]{Starting and Testing the Control Channel }
+\index[general]{Channel!Starting and Testing the Control }
+
+It will most likely be the simplest to implement the Control Channel
+encryption in the following order:
+
+\begin{itemize}
+\item Stop Bacula.
+\item Modify the Client resource in the Director's conf file.
+\item Start Bacula
+\item Start stunnel on the server with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-dir.conf
+
+\end{verbatim}
+\normalsize
+
+\item Start stunnel on the client with:
+
+ \footnotesize
+\begin{verbatim}
+ stunnel stunnel-fd1.conf
+
+\end{verbatim}
+\normalsize
+
+\item Run a job.
+\item If it doesn't work, turn debug on in both stunnel conf files, restart
+ the stunnels, rerun the job, repeat until it works.
+ \end{itemize}
+
+\section{Using stunnel to Encrypt to a Second Client}
+\index[general]{Using stunnel to Encrypt to a Second Client }
+\index[general]{Client!Using stunnel to Encrypt to a Second }
+
+On the client machine, you can just duplicate the setup that you have on the
+first client file for file and it should work fine.
+
+In the bacula-dir.conf file, you will want to create a second client pretty
+much identical to how you did for the first one, but the port number must be
+unique. We previously used:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client-fd
+ Address = localhost
+ FDPort = 29102
+ Catalog = BackupDB
+ Password = "xxx"
+}
+\end{verbatim}
+\normalsize
+
+so for the second client, we will, of course, have a different name, and we
+will also need a different port. Remember that we used port 29103 for the
+Storage daemon, so for the second client, we can use port 29104, and the
+Client resource would look like:
+
+\footnotesize
+\begin{verbatim}
+Client {
+ Name = client2-fd
+ Address = localhost
+ FDPort = 29104
+ Catalog = BackupDB
+ Password = "yyy"
+}
+\end{verbatim}
+\normalsize
+
+Now, fortunately, we do not need a third stunnel to on the Director's machine,
+we can just add the new port to the config file, stunnel-dir.conf, to make:
+
+\footnotesize
+\begin{verbatim}
+#
+# Bacula stunnel conf for the Directory to contact a client
+#
+pid = /home/kern/bacula/bin/working/stunnel.pid
+#
+# A cert is not mandatory here. If verify=2, a
+# cert signed by a CA must be specified, and
+# either CAfile or CApath must point to the CA's
+# cert
+#
+cert = /home/kern/stunnel/stunnel.pem
+CAfile = /home/kern/ssl/cacert.pem
+verify = 2
+client = yes
+# debug = 7
+# foreground = yes
+[29102]
+accept = localhost:29102
+connect = client:29102
+[29104]
+accept = localhost:29102
+connect = client2:29102
+\end{verbatim}
+\normalsize
+
+There are no changes necessary to the Storage daemon or the other stunnel so
+that this new client can talk to our Storage daemon.
+
+\section{Creating a Self-signed Certificate}
+\index[general]{Creating a Self-signed Certificate }
+\index[general]{Certificate!Creating a Self-signed }
+
+You may create a self-signed certificate for use with stunnel that will permit
+you to make it function, but will not allow certificate validation. The .pem
+file containing both the certificate and the key can be made with the
+following, which I put in a file named {\bf makepem}:
+
+\footnotesize
+\begin{verbatim}
+#!/bin/sh
+#
+# Simple shell script to make a .pem file that can be used
+# with stunnel and Bacula
+#
+OPENSSL=openssl
+ umask 77
+ PEM1="/bin/mktemp openssl.XXXXXX"
+ PEM2="/bin/mktemp openssl.XXXXXX"
+ ${OPENSSL} req -newkey rsa:1024 -keyout $PEM1 -nodes \
+ -x509 -days 365 -out $PEM2
+ cat $PEM1 > stunnel.pem
+ echo "" >>stunnel.pem
+ cat $PEM2 >>stunnel.pem
+ rm $PEM1 $PEM2
+\end{verbatim}
+\normalsize
+
+The above script will ask you a number of questions. You may simply answer
+each of them by entering a return, or if you wish you may enter your own data.
+
+
+\section{Getting a CA Signed Certificate}
+\index[general]{Certificate!Getting a CA Signed }
+\index[general]{Getting a CA Signed Certificate }
+
+The process of getting a certificate that is signed by a CA is quite a bit
+more complicated. You can purchase one from quite a number of PKI vendors, but
+that is not at all necessary for use with Bacula.
+
+To get a CA signed
+certificate, you will either need to find a friend that has setup his own CA
+or to become a CA yourself, and thus you can sign all your own certificates.
+The book OpenSSL by John Viega, Matt Mesier \& Pravir Chandra from O'Reilly
+explains how to do it, or you can read the documentation provided in the
+Open-source PKI Book project at Source Forge:
+\elink{
+http://ospkibook.sourceforge.net/docs/OSPKI-2.4.7/OSPKI-html/ospki-book.htm}
+{http://ospkibook.sourceforge.net/docs/OSPKI-2.4.7/OSPKI-html/ospki-book.htm}.
+Note, this link may change.
+
+\section{Using ssh to Secure the Communications}
+\index[general]{Communications!Using ssh to Secure the }
+\index[general]{Using ssh to Secure the Communications }
+
+Please see the script {\bf ssh-tunnel.sh} in the {\bf examples} directory. It
+was contributed by Stephan Holl.
--- /dev/null
+#!/usr/bin/perl -w
+#
+use strict;
+
+# Used to change the names of the image files generated by latex2html from imgxx.png
+# to meaningful names. Provision is made to go either from or to the meaningful names.
+# The meaningful names are obtained from a file called imagename_translations, which
+# is generated by extensions to latex2html in the make_image_file subroutine in
+# bacula.perl.
+
+# Opens the file imagename_translations and reads the contents into a hash.
+# The hash is creaed with the imgxx.png files as the key if processing TO
+# meaningful filenames, and with the meaningful filenames as the key if
+# processing FROM meaningful filenames.
+# Then opens the html file(s) indicated in the command-line arguments and
+# changes all image references according to the translations described in the
+# above file. Finally, it renames the image files.
+#
+# Original creation: 3-27-05 by Karl Cunningham.
+# Modified 5-21-05 to go FROM and TO meaningful filenames.
+#
+my $TRANSFILE = "imagename_translations";
+my $path;
+
+# Loads the contents of $TRANSFILE file into the hash referenced in the first
+# argument. The hash is loaded to translate old to new if $direction is 0,
+# otherwise it is loaded to translate new to old. In this context, the
+# 'old' filename is the meaningful name, and the 'new' filename is the
+# imgxx.png filename. It is assumed that the old image is the one that
+# latex2html has used as the source to create the imgxx.png filename.
+# The filename extension is taken from the file
+sub read_transfile {
+ my ($trans,$direction) = @_;
+
+ if (!open IN,"<$path$TRANSFILE") {
+ print "WARNING: Cannot open image translation file $path$TRANSFILE for reading\n";
+ print " Image filename translation aborted\n\n";
+ exit 0;
+ }
+
+ while (<IN>) {
+ chomp;
+ my ($new,$old) = split(/\001/);
+
+ # Old filenames will usually have a leading ./ which we don't need.
+ $old =~ s/^\.\///;
+
+ # The filename extension of the old filename must be made to match
+ # the new filename because it indicates the encoding format of the image.
+ my ($ext) = $new =~ /(\.[^\.]*)$/;
+ $old =~ s/\.[^\.]*$/$ext/;
+ if ($direction == 0) {
+ $trans->{$new} = $old;
+ } else {
+ $trans->{$old} = $new;
+ }
+ }
+ close IN;
+}
+
+# Translates the image names in the file given as the first argument, according to
+# the translations in the hash that is given as the second argument.
+# The file contents are read in entirely into a string, the string is processed, and
+# the file contents are then written. No particular care is taken to ensure that the
+# file is not lost if a system failure occurs at an inopportune time. It is assumed
+# that the html files being processed here can be recreated on demand.
+#
+# Links to other files are added to the %filelist for processing. That way,
+# all linked files will be processed (assuming they are local).
+sub translate_html {
+ my ($filename,$trans,$filelist) = @_;
+ my ($contents,$out,$this,$img,$dest);
+ my $cnt = 0;
+
+ # If the filename is an external link ignore it. And drop any file:// from
+ # the filename.
+ $filename =~ /^(http|ftp|mailto)\:/ and return 0;
+ $filename =~ s/^file\:\/\///;
+ # Load the contents of the html file.
+ if (!open IF,"<$path$filename") {
+ print "WARNING: Cannot open $path$filename for reading\n";
+ print " Image Filename Translation aborted\n\n";
+ exit 0;
+ }
+
+ while (<IF>) {
+ $contents .= $_;
+ }
+ close IF;
+
+ # Now do the translation...
+ # First, search for an image filename.
+ while ($contents =~ /\<\s*IMG[^\>]*SRC=\"/si) {
+ $contents = $';
+ $out .= $` . $&;
+
+ # The next thing is an image name. Get it and translate it.
+ $contents =~ /^(.*?)\"/s;
+ $contents = $';
+ $this = $&;
+ $img = $1;
+ # If the image is in our list of ones to be translated, do it
+ # and feed the result to the output.
+ $cnt += $this =~ s/$img/$trans->{$img}/ if (defined($trans->{$img}));
+ $out .= $this;
+ }
+ $out .= $contents;
+
+ # Now send the translated text to the html file, overwriting what's there.
+ open OF,">$path$filename" or die "Cannot open $path$filename for writing\n";
+ print OF $out;
+ close OF;
+
+ # Now look for any links to other files and add them to the list of files to do.
+ while ($out =~ /\<\s*A[^\>]*HREF=\"(.*?)\"/si) {
+ $out = $';
+ $dest = $1;
+ # Drop an # and anything after it.
+ $dest =~ s/\#.*//;
+ $filelist->{$dest} = '' if $dest;
+ }
+ return $cnt;
+}
+
+# REnames the image files spefified in the %translate hash.
+sub rename_images {
+ my $translate = shift;
+ my ($response);
+
+ foreach (keys(%$translate)) {
+ if (! $translate->{$_}) {
+ print " WARNING: No destination Filename for $_\n";
+ } else {
+ $response = `mv -f $path$_ $path$translate->{$_} 2>&1`;
+ $response and print "ERROR from system $response\n";
+ }
+ }
+}
+
+#################################################
+############# MAIN #############################
+################################################
+
+# %filelist starts out with keys from the @ARGV list. As files are processed,
+# any links to other files are added to the %filelist. A hash of processed
+# files is kept so we don't do any twice.
+
+# The first argument must be either --to_meaningful_names or --from_meaningful_names
+
+my (%translate,$search_regex,%filelist,%completed,$thisfile);
+my ($cnt,$direction);
+
+my $arg0 = shift(@ARGV);
+$arg0 =~ /^(--to_meaningful_names|--from_meaningful_names)$/ or
+ die "ERROR: First argument must be either \'--to_meaningful_names\' or \'--from_meaningful_names\'\n";
+
+$direction = ($arg0 eq '--to_meaningful_names') ? 0 : 1;
+
+(@ARGV) or die "ERROR: Filename(s) to process must be given as arguments\n";
+
+# Use the first argument to get the path to the file of translations.
+my $tmp = $ARGV[0];
+($path) = $tmp =~ /(.*\/)/;
+$path = '' unless $path;
+
+read_transfile(\%translate,$direction);
+
+foreach (@ARGV) {
+ # Strip the path from the filename, and use it later on.
+ if (s/(.*\/)//) {
+ $path = $1;
+ } else {
+ $path = '';
+ }
+ $filelist{$_} = '';
+
+ while ($thisfile = (keys(%filelist))[0]) {
+ $cnt += translate_html($thisfile,\%translate,\%filelist) if (!exists($completed{$thisfile}));
+ delete($filelist{$thisfile});
+ $completed{$thisfile} = '';
+ }
+ print "translate_images.pl: $cnt image filenames translated ",($direction)?"from":"to"," meaningful names\n";
+}
+
+rename_images(\%translate);
--- /dev/null
+%%
+%%
+
+\chapter{Variable Expansion}
+\label{VarsChapter}
+\index[general]{Variable Expansion }
+\index[general]{Expansion!Variable }
+
+% TODO: does the following mean that this should not be in book?
+
+Please note that as of version 1.37, the Variable Expansion
+is deprecated and replaced by Python scripting (not yet
+documented).
+
+Variable expansion is somewhat similar to Unix shell variable expansion.
+Currently (version 1.31), it is used only in format labels, but in the future,
+it will most likely be used in more places.
+
+\section{General Functionality}
+\index[general]{Functionality!General }
+\index[general]{General Functionality }
+
+This is basically a string expansion capability that permits referencing
+variables, indexing arrays, conditional replacement of variables, case
+conversion, substring selection, regular expression matching and replacement,
+character class replacement, padding strings, repeated expansion in a user
+controlled loop, support of arithmetic expressions in the loop start, step and
+end conditions, and recursive expansion.
+
+When using variable expansion characters in a Volume Label Format record, the
+format should always be enclosed in double quotes ({\bf "}).
+
+For example, {\bf \$\{HOME\}} will be replaced by your home directory as
+defined in the environment. If you have defined the variable {\bf xxx} to be
+{\bf Test}, then the reference {\bf \$\{xxx:p/7/Y/r\}} will right pad the
+contents of {\bf xxx} to a length of seven characters filling with the
+character {\bf Y} giving {\bf YYYTest}.
+
+\section{Bacula Variables}
+\index[general]{Bacula Variables }
+\index[general]{Variables!Bacula }
+
+Within Bacula, there are three main classes of variables with some minor
+variations within the classes. The classes are:
+
+\begin{description}
+
+\item [Counters]
+ \index[general]{Counters }
+ Counters are defined by the {\bf Counter} resources in the Director's conf
+file. The counter can either be a temporary counter that lasts for the
+duration of Bacula's execution, or it can be a variable that is stored in
+the catalog, and thus retains its value from one Bacula execution to another.
+Counter variables may be incremented by postfixing a plus sign ({\bf +} after
+the variable name).
+
+\item [Internal Variables]
+ \index[general]{Internal Variables }
+ Internal variables are read-only, and may be related to the current job (i.e.
+Job name), or maybe special variables such as the date and time. The
+following variables are available:
+
+\begin{itemize}
+\item [Year] -- the full year
+\item [Month] -- the current month 1-12
+\item [Day] -- the day of the month 1-31
+\item [Hour] -- the hour 0-24
+\item [Minute] -- the current minute 0-59
+\item [Second] -- the current second 0-59
+\item [WeekDay] -- the current day of the week 0-6 with 0 being Sunday
+\item [Job] -- the job name
+\item [general] -- the Director's name
+\item [Level] -- the Job Level
+\item [Type] -- the Job type
+\item [JobId] -- the JobId
+\item [JobName] -- the unique job name composed of Job and date
+\item [Storage] -- the Storage daemon's name
+\item [Client] -- the Client's name
+\item [NumVols] -- the current number of Volumes in the Pool
+\item [Pool] -- the Pool name
+\item [Catalog] -- the Catalog name
+\item [MediaType] -- the Media Type
+ \end{itemize}
+
+\item [Environment Variables]
+ \index[general]{Environment Variables }
+ Environment variables are read-only, and must be defined in the environment
+prior to executing Bacula. Environment variables may be either scalar or an
+array, where the elements of the array are referenced by subscripting the
+variable name (e.g. {\bf \$\{Months[3]\}}). Environment variable arrays are
+defined by separating the elements with a vertical bar ({\bf |}), thus {\bf
+set Months="Jan|Feb|Mar|Apr|..."} defines an environment variable named
+{\bf Month} that will be treated as an array, and the reference {\bf
+\$\{Months[3]\}} will yield {\bf Mar}. The elements of the array can have
+differing lengths.
+\end{description}
+
+\section{Full Syntax}
+\index[general]{Syntax!Full }
+\index[general]{Full Syntax }
+
+Since the syntax is quite extensive, below, you will find the pseudo BNF. The
+special characters have the following meaning:
+
+\footnotesize
+\begin{verbatim}
+ ::= definition
+ ( ) grouping if the parens are not quoted
+ | separates alternatives
+ '/' literal / (or any other character)
+ CAPS a character or character sequence
+ * preceding item can be repeated zero or more times
+ ? preceding item can appear zero or one time
+ + preceding item must appear one or more times
+\end{verbatim}
+\normalsize
+
+And the pseudo BNF describing the syntax is:
+
+\footnotesize
+\begin{verbatim}
+ input ::= ( TEXT
+ | variable
+ | INDEX_OPEN input INDEX_CLOSE (loop_limits)?
+ )*
+ variable ::= DELIM_INIT (name|expression)
+ name ::= (NAME_CHARS)+
+ expression ::= DELIM_OPEN
+ (name|variable)+
+ (INDEX_OPEN num_exp INDEX_CLOSE)?
+ (':' command)*
+ DELIM_CLOSE
+ command ::= '-' (TEXT_EXP|variable)+
+ | '+' (TEXT_EXP|variable)+
+ | 'o' NUMBER ('-'|',') (NUMBER)?
+ | '#'
+ | '*' (TEXT_EXP|variable)+
+ | 's' '/' (TEXT_PATTERN)+
+ '/' (variable|TEXT_SUBST)*
+ '/' ('m'|'g'|'i'|'t')*
+ | 'y' '/' (variable|TEXT_SUBST)+
+ '/' (variable|TEXT_SUBST)*
+ '/'
+ | 'p' '/' NUMBER
+ '/' (variable|TEXT_SUBST)*
+ '/' ('r'|'l'|'c')
+ | '%' (name|variable)+
+ ('(' (TEXT_ARGS)? ')')?
+ | 'l'
+ | 'u'
+ num_exp ::= operand
+ | operand ('+'|'-'|'*'|'/'|'%') num_exp
+ operand ::= ('+'|'-')? NUMBER
+ | INDEX_MARK
+ | '(' num_exp ')'
+ | variable
+ loop_limits ::= DELIM_OPEN
+ (num_exp)? ',' (num_exp)? (',' (num_exp)?)?
+ DELIM_CLOSE
+ NUMBER ::= ('0'|...|'9')+
+ TEXT_PATTERN::= (^('/'))+
+ TEXT_SUBST ::= (^(DELIM_INIT|'/'))+
+ TEXT_ARGS ::= (^(DELIM_INIT|')'))+
+ TEXT_EXP ::= (^(DELIM_INIT|DELIM_CLOSE|':'|'+'))+
+ TEXT ::= (^(DELIM_INIT|INDEX_OPEN|INDEX_CLOSE))+
+ DELIM_INIT ::= '$'
+ DELIM_OPEN ::= '{'
+ DELIM_CLOSE ::= '}'
+ INDEX_OPEN ::= '['
+ INDEX_CLOSE ::= ']'
+ INDEX_MARK ::= '#'
+ NAME_CHARS ::= 'a'|...|'z'|'A'|...|'Z'|'0'|...|'9'
+\end{verbatim}
+\normalsize
+
+\section{Semantics}
+\index[general]{Semantics }
+
+The items listed in {\bf command} above, which always follow a colon ({\bf :})
+have the following meanings:
+
+\footnotesize
+\begin{verbatim}
+ - perform substitution if variable is empty
+ + perform substitution if variable is not empty
+ o cut out substring of the variable value
+ # length of the variable value
+ * substitute empty string if the variable value is not empty,
+ otherwise substitute the trailing parameter
+ s regular expression search and replace. The trailing
+ options are: m = multiline, i = case insensitive,
+ g = global, t = plain text (no regexp)
+ y transpose characters from class A to class B
+ p pad variable to l = left, r = right or c = center,
+ with second value.
+ % special function call (none implemented)
+ l lower case the variable value
+ u upper case the variable value
+\end{verbatim}
+\normalsize
+
+The {\bf loop\_limits} are start, step, and end values.
+
+A counter variable name followed immediately by a plus ({\bf +}) will cause
+the counter to be incremented by one.
+
+\section{Examples}
+\index[general]{Examples }
+
+To create an ISO date:
+
+\footnotesize
+\begin{verbatim}
+ DLT-${Year}-${Month:p/2/0/r}-${Day:p/2/0/r}
+\end{verbatim}
+\normalsize
+
+on 20 June 2003 would give {\bf DLT-2003-06-20}
+
+If you set the environment variable {\bf mon} to
+
+\footnotesize
+\begin{verbatim}
+ January|February|March|April|May|...
+ File-${mon[${Month}]}/${Day}/${Year}
+\end{verbatim}
+\normalsize
+
+on the first of March would give {\bf File-March/1/2003 }
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