.TH SLAPD.ACCESS 5 "RELEASEDATE" "OpenLDAP LDVERSION"
-.\" Copyright 1998-2007 The OpenLDAP Foundation All Rights Reserved.
+.\" Copyright 1998-2011 The OpenLDAP Foundation All Rights Reserved.
.\" Copying restrictions apply. See COPYRIGHT/LICENSE.
+.\" $OpenLDAP$
.SH NAME
slapd.access \- access configuration for slapd, the stand-alone LDAP daemon
.SH SYNOPSIS
.BR slapd.conf (5)
file contains configuration information for the
.BR slapd (8)
-daemon. This configuration file is also used by the
-.BR slurpd (8)
-replication daemon and by the SLAPD tools
+daemon. This configuration file is also used by the SLAPD tools
.BR slapacl (8),
.BR slapadd (8),
.BR slapauth (8),
If no access controls are present, the default policy
allows anyone and everyone to read anything but restricts
updates to rootdn. (e.g., "access to * by * read").
-The rootdn can always read and write EVERYTHING!
+.LP
+When dealing with an access list, because the global access list is
+effectively appended to each per-database list, if the resulting
+list is non-empty then the access list will end with an implicit
+.B access to * by * none
+directive. If there are no access directives applicable to a backend,
+then a default read is used.
+.LP
+.B Be warned: the rootdn can always read and write EVERYTHING!
.LP
For entries not held in any backend (such as a root DSE), the
-directives of the first backend (and any global directives) are
-used.
+global directives are used.
.LP
Arguments that should be replaced by actual text are shown in
brackets <>.
and/or
.BR re_format (7),
matching a normalized string representation of the entry's DN.
-The regex form of the pattern does not (yet) support UTF\-8.
+The regex form of the pattern does not (yet) support UTF-8.
.LP
The statement
.B filter=<ldapfilter>
The dn, filter, and attrs statements are additive; they can be used in sequence
to select entities the access rule applies to based on naming context,
value and attribute type simultaneously.
+Submatches resulting from
+.B regex
+matching can be dereferenced in the
+.B <who>
+field using the syntax
+.IR ${v<n>} ,
+where
+.I <n>
+is the submatch number.
+The default syntax,
+.IR $<n> ,
+is actually an alias for
+.IR ${d<n>} ,
+that corresponds to dereferencing submatches from the
+.B dnpattern
+portion of the
+.B <what>
+field.
.SH THE <WHO> FIELD
The field
.B <who>
<groupstyle>={exact|expand}
<peernamestyle>={<style>|ip|ipv6|path}
<domainstyle>={exact|regex|sub(tree)}
- <setstyle>={exact|regex}
+ <setstyle>={exact|expand}
<modifier>={expand}
<name>=aci <pattern>=<attrname>]
.fi
or the form
.BR ${<digit>+} ,
for submatches higher than 9.
+Substring substitution from attribute value can
+be done in
+using the form
+.BR ${v<digit>+} .
Since the dollar character is used to indicate a substring replacement,
the dollar character that is used to indicate match up to the end of
the string must be escaped by a second dollar character, e.g.
part, and it is compared against the
.B <ip>
portion of the pattern after masking with
-.BR <mask> .
+.BR <mask> :
+\fI((peername & <mask>) == <ip>)\fP.
As an example,
.B peername.ip=127.0.0.1
and
Its component are defined as
.LP
.nf
- <level> ::= none|disclose|auth|compare|search|read|write|manage
- <priv> ::= {=|+|-}{m|w|r|s|c|x|d|0}+
+ <level> ::= none|disclose|auth|compare|search|read|{write|add|delete}|manage
+ <priv> ::= {=|+|\-}{0|d|x|c|s|r|{w|a|z}|m}+
.fi
.LP
The modifier
An example is the
.B selfwrite
access to the member attribute of a group, which allows one to add/delete
-its own DN from the member list of a group, without affecting other members.
+its own DN from the member list of a group, while being not allowed
+to affect other members.
.LP
The
.B level
.BR compare ,
.BR search ,
.BR read ,
+.BR write ,
and
-.BR write .
+.BR manage .
Each access level implies all the preceding ones, thus
.B manage
-grants all access including administrative access,
+grants all access including administrative access.
+The
+.BR write
+access is actually the combination of
+.BR add
+and
+.BR delete ,
+which respectively restrict the write privilege to add or delete
+the specified
+.BR <what> .
+
.LP
The
.B none
The
.B +
and
-.B -
+.B \-
signs add/remove access privileges to the existing ones.
The privileges are
.B m
for manage,
.B w
for write,
+.B a
+for add,
+.B z
+for delete,
.B r
for read,
.B s
More than one of the above privileges can be added in one statement.
.B 0
indicates no privileges and is used only by itself (e.g., +0).
+Note that
+.B +az
+is equivalent to
+.BR +w .
.LP
If no access is given, it defaults to
.BR +0 .
The
.B add
operation requires
-.B write (=w)
+.B add (=a)
privileges on the pseudo-attribute
.B entry
of the entry being added, and
-.B write (=w)
+.B add (=a)
privileges on the pseudo-attribute
.B children
of the entry's parent.
-When adding the suffix entry of a database, write access to
+When adding the suffix entry of a database,
+.B add
+access to
.B children
-of the empty DN ("") is required.
+of the empty DN ("") is required. Also if
+Add content ACL checking has been configured on
+the database (see the
+.BR slapd.conf (5)
+or
+.BR slapd\-config (5)
+manual page),
+.B add (=a)
+will be required on all of the attributes being added.
.LP
The
The
.B delete
operation requires
-.B write (=w)
+.B delete (=z)
privileges on the pseudo-attribute
.B entry
of the entry being deleted, and
-.B write (=w)
+.B delete (=d)
privileges on the
.B children
pseudo-attribute of the entry's parent.
operation requires
.B write (=w)
privileges on the attributes being modified.
+In detail,
+.B add (=a)
+is required to add new values,
+.B delete (=z)
+is required to delete existing values,
+and both
+.B delete
+and
+.BR "add (=az)" ,
+or
+.BR "write (=w)" ,
+are required to replace existing values.
.LP
The
privileges on the pseudo-attribute
.B entry
of the entry whose relative DN is being modified,
-.B write (=w)
+.B delete (=z)
privileges on the pseudo-attribute
.B children
-of the old and new entry's parents, and
-.B write (=w)
+of the old entry's parents,
+.B add (=a)
+privileges on the pseudo-attribute
+.B children
+of the new entry's parents, and
+.B add (=a)
privileges on the attributes that are present in the new relative DN.
-.B Write (=w)
+.B Delete (=z)
privileges are also required on the attributes that are present
in the old relative DN if
.B deleteoldrdn
.B search (=s)
privileges on the
.B entry
-pseudo-attribute of the searchBase (NOTE: this was introduced with 2.3).
+pseudo-attribute of the searchBase
+(NOTE: this was introduced with OpenLDAP 2.4).
Then, for each entry, it requires
.B search (=s)
privileges on the attributes that are defined in the filter.
attribute of the authorizing identity and/or on the
.B authzFrom
attribute of the authorized identity.
+In general, when an internal lookup is performed for authentication
+or authorization purposes, search-specific privileges (see the access
+requirements for the search operation illustrated above) are relaxed to
+.BR auth .
.LP
Access control to search entries is checked by the frontend,
so it is fully honored by all backends; for all other operations
and for the discovery phase of the search operation,
full ACL semantics is only supported by the primary backends, i.e.
-.BR back-bdb (5),
+.BR back\-bdb (5),
and
-.BR back-hdb (5).
+.BR back\-hdb (5).
Some other backend, like
-.BR back-sql (5),
+.BR back\-sql (5),
may fully support them; others may only support a portion of the
described semantics, or even differ in some aspects.
The relevant details are described in the backend-specific man pages.
default slapd configuration file
.SH SEE ALSO
.BR slapd (8),
-.BR slapd-* (5),
+.BR slapd\-* (5),
.BR slapacl (8),
.BR regex (7),
.BR re_format (7)
projects / openldap / blobdiff