2 * Encode and decode standard Unix attributes and
3 * Extended attributes for Win32 and
4 * other non-Unix systems, or Unix systems with ACLs, ...
6 * Kern Sibbald, October MMII
12 Copyright (C) 2002-2004 Kern Sibbald and John Walker
14 This program is free software; you can redistribute it and/or
15 modify it under the terms of the GNU General Public License as
16 published by the Free Software Foundation; either version 2 of
17 the License, or (at your option) any later version.
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 General Public License for more details.
24 You should have received a copy of the GNU General Public
25 License along with this program; if not, write to the Free
26 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
34 #if defined(HAVE_CYGWIN) || defined(HAVE_WIN32)
36 /* Forward referenced subroutines */
37 static bool set_win32_attributes(JCR *jcr, ATTR *attr, BFILE *ofd);
38 void unix_name_to_win32(POOLMEM **win32_name, char *name);
39 void win_error(JCR *jcr, char *prefix, POOLMEM *ofile);
40 HANDLE bget_handle(BFILE *bfd);
43 /* For old systems that don't have lchown() use chown() */
48 /*=============================================================*/
50 /* *** A l l S y s t e m s *** */
52 /*=============================================================*/
55 * Return the data stream that will be used
57 int select_data_stream(FF_PKT *ff_pkt)
61 /* Note, no sparse option for win32_data */
62 if (!is_portable_backup(&ff_pkt->bfd)) {
63 stream = STREAM_WIN32_DATA;
64 ff_pkt->flags &= ~FO_SPARSE;
65 } else if (ff_pkt->flags & FO_SPARSE) {
66 stream = STREAM_SPARSE_DATA;
68 stream = STREAM_FILE_DATA;
71 if (ff_pkt->flags & FO_GZIP) {
72 if (stream == STREAM_WIN32_DATA) {
73 stream = STREAM_WIN32_GZIP_DATA;
74 } else if (stream == STREAM_FILE_DATA) {
75 stream = STREAM_GZIP_DATA;
77 stream = STREAM_SPARSE_GZIP_DATA;
86 * Encode a stat structure into a base64 character string
87 * All systems must create such a structure.
88 * In addition, we tack on the LinkFI, which is non-zero in
89 * the case of a hard linked file that has no data. This
90 * is a File Index pointing to the link that does have the
91 * data (always the first one encountered in a save).
92 * You may piggyback attributes on this packet by encoding
93 * them in the encode_attribsEx() subroutine, but this is
96 void encode_stat(char *buf, FF_PKT *ff_pkt, int data_stream)
99 struct stat *statp = &ff_pkt->statp;
101 * Encode a stat packet. I should have done this more intelligently
102 * with a length so that it could be easily expanded.
104 p += to_base64((int64_t)statp->st_dev, p);
105 *p++ = ' '; /* separate fields with a space */
106 p += to_base64((int64_t)statp->st_ino, p);
108 p += to_base64((int64_t)statp->st_mode, p);
110 p += to_base64((int64_t)statp->st_nlink, p);
112 p += to_base64((int64_t)statp->st_uid, p);
114 p += to_base64((int64_t)statp->st_gid, p);
116 p += to_base64((int64_t)statp->st_rdev, p);
118 p += to_base64((int64_t)statp->st_size, p);
121 p += to_base64((int64_t)statp->st_blksize, p);
123 p += to_base64((int64_t)statp->st_blocks, p);
126 p += to_base64((int64_t)0, p); /* output place holder */
128 p += to_base64((int64_t)0, p); /* output place holder */
131 p += to_base64((int64_t)statp->st_atime, p);
133 p += to_base64((int64_t)statp->st_mtime, p);
135 p += to_base64((int64_t)statp->st_ctime, p);
137 p += to_base64((int64_t)ff_pkt->LinkFI, p);
141 /* FreeBSD function */
142 p += to_base64((int64_t)statp->st_flags, p); /* output st_flags */
144 p += to_base64((int64_t)0, p); /* output place holder */
147 p += to_base64((int64_t)data_stream, p);
154 /* Decode a stat packet from base64 characters */
155 int decode_stat(char *buf, struct stat *statp, int32_t *LinkFI)
160 p += from_base64(&val, p);
162 p++; /* skip space */
163 p += from_base64(&val, p);
166 p += from_base64(&val, p);
167 statp->st_mode = val;
169 p += from_base64(&val, p);
170 statp->st_nlink = val;
172 p += from_base64(&val, p);
175 p += from_base64(&val, p);
178 p += from_base64(&val, p);
179 statp->st_rdev = val;
181 p += from_base64(&val, p);
182 statp->st_size = val;
185 p += from_base64(&val, p);
186 statp->st_blksize = val;
188 p += from_base64(&val, p);
189 statp->st_blocks = val;
192 p += from_base64(&val, p);
193 // statp->st_blksize = val;
195 p += from_base64(&val, p);
196 // statp->st_blocks = val;
199 p += from_base64(&val, p);
200 statp->st_atime = val;
202 p += from_base64(&val, p);
203 statp->st_mtime = val;
205 p += from_base64(&val, p);
206 statp->st_ctime = val;
208 /* Optional FileIndex of hard linked file data */
209 if (*p == ' ' || (*p != 0 && *(p+1) == ' ')) {
211 p += from_base64(&val, p);
212 *LinkFI = (uint32_t)val;
218 /* FreeBSD user flags */
219 if (*p == ' ' || (*p != 0 && *(p+1) == ' ')) {
221 p += from_base64(&val, p);
223 statp->st_flags = (uint32_t)val;
229 /* Look for data stream id */
230 if (*p == ' ' || (*p != 0 && *(p+1) == ' ')) {
232 p += from_base64(&val, p);
239 /* Decode a LinkFI field of encoded stat packet */
240 int32_t decode_LinkFI(char *buf, struct stat *statp)
245 skip_nonspaces(&p); /* st_dev */
246 p++; /* skip space */
247 skip_nonspaces(&p); /* st_ino */
249 p += from_base64(&val, p);
250 statp->st_mode = val; /* st_mode */
252 skip_nonspaces(&p); /* st_nlink */
254 skip_nonspaces(&p); /* st_uid */
256 skip_nonspaces(&p); /* st_gid */
258 skip_nonspaces(&p); /* st_rdev */
260 skip_nonspaces(&p); /* st_size */
262 skip_nonspaces(&p); /* st_blksize */
264 skip_nonspaces(&p); /* st_blocks */
266 skip_nonspaces(&p); /* st_atime */
268 skip_nonspaces(&p); /* st_mtime */
270 skip_nonspaces(&p); /* st_ctime */
272 /* Optional FileIndex of hard linked file data */
273 if (*p == ' ' || (*p != 0 && *(p+1) == ' ')) {
275 p += from_base64(&val, p);
282 * Set file modes, permissions and times
284 * fname is the original filename
285 * ofile is the output filename (may be in a different directory)
287 * Returns: true on success
290 bool set_attributes(JCR *jcr, ATTR *attr, BFILE *ofd)
296 #if defined(HAVE_CYGWIN) || defined(HAVE_WIN32)
297 if (attr->stream == STREAM_UNIX_ATTRIBUTES_EX &&
298 set_win32_attributes(jcr, attr, ofd)) {
302 pm_strcpy(&attr->ofname, "*none*");
305 if (attr->data_stream == STREAM_WIN32_DATA ||
306 attr->data_stream == STREAM_WIN32_GZIP_DATA) {
310 pm_strcpy(&attr->ofname, "*none*");
316 * If Windows stuff failed, e.g. attempt to restore Unix file
317 * to Windows, simply fall through and we will do it the
324 bclose(ofd); /* first close file */
327 ut.actime = attr->statp.st_atime;
328 ut.modtime = attr->statp.st_mtime;
330 /* ***FIXME**** optimize -- don't do if already correct */
332 * For link, change owner of link using lchown, but don't
333 * try to do a chmod as that will update the file behind it.
335 if (attr->type == FT_LNK) {
336 /* Change owner of link, not of real file */
337 if (lchown(attr->ofname, attr->statp.st_uid, attr->statp.st_gid) < 0) {
339 Jmsg2(jcr, M_ERROR, 0, _("Unable to set file owner %s: ERR=%s\n"),
340 attr->ofname, be.strerror());
344 if (chown(attr->ofname, attr->statp.st_uid, attr->statp.st_gid) < 0) {
346 Jmsg2(jcr, M_ERROR, 0, _("Unable to set file owner %s: ERR=%s\n"),
347 attr->ofname, be.strerror());
350 if (chmod(attr->ofname, attr->statp.st_mode) < 0) {
352 Jmsg2(jcr, M_ERROR, 0, _("Unable to set file modes %s: ERR=%s\n"),
353 attr->ofname, be.strerror());
360 if (utime(attr->ofname, &ut) < 0) {
362 Jmsg2(jcr, M_ERROR, 0, _("Unable to set file times %s: ERR=%s\n"),
363 attr->ofname, be.strerror());
370 * Note, this should really be done before the utime() above,
371 * but if the immutable bit is set, it will make the utimes()
374 if (chflags(attr->ofname, attr->statp.st_flags) < 0) {
376 Jmsg2(jcr, M_ERROR, 0, _("Unable to set file flags %s: ERR=%s\n"),
377 attr->ofname, be.strerror());
382 pm_strcpy(&attr->ofname, "*none*");
388 /*=============================================================*/
390 /* * * * U n i x * * * * */
392 /*=============================================================*/
394 #if !defined(HAVE_CYGWIN) && !defined(HAVE_WIN32)
397 * It is possible to piggyback additional data e.g. ACLs on
398 * the encode_stat() data by returning the extended attributes
399 * here. They must be "self-contained" (i.e. you keep track
400 * of your own length), and they must be in ASCII string
401 * format. Using this feature is not recommended.
402 * The code below shows how to return nothing. See the Win32
403 * code below for returning something in the attributes.
405 int encode_attribsEx(JCR *jcr, char *attribsEx, FF_PKT *ff_pkt)
407 *attribsEx = 0; /* no extended attributes */
408 return STREAM_UNIX_ATTRIBUTES;
415 /*=============================================================*/
417 /* * * * W i n 3 2 * * * * */
419 /*=============================================================*/
421 #if defined(HAVE_CYGWIN) || defined(HAVE_WIN32)
423 int encode_attribsEx(JCR *jcr, char *attribsEx, FF_PKT *ff_pkt)
426 WIN32_FILE_ATTRIBUTE_DATA atts;
429 attribsEx[0] = 0; /* no extended attributes */
431 if (!p_GetFileAttributesEx) {
432 return STREAM_UNIX_ATTRIBUTES;
435 unix_name_to_win32(&ff_pkt->sys_fname, ff_pkt->fname);
436 if (!p_GetFileAttributesEx(ff_pkt->sys_fname, GetFileExInfoStandard,
438 win_error(jcr, "GetFileAttributesEx:", ff_pkt->sys_fname);
439 return STREAM_UNIX_ATTRIBUTES;
442 p += to_base64((uint64_t)atts.dwFileAttributes, p);
443 *p++ = ' '; /* separate fields with a space */
444 li.LowPart = atts.ftCreationTime.dwLowDateTime;
445 li.HighPart = atts.ftCreationTime.dwHighDateTime;
446 p += to_base64((uint64_t)li.QuadPart, p);
448 li.LowPart = atts.ftLastAccessTime.dwLowDateTime;
449 li.HighPart = atts.ftLastAccessTime.dwHighDateTime;
450 p += to_base64((uint64_t)li.QuadPart, p);
452 li.LowPart = atts.ftLastWriteTime.dwLowDateTime;
453 li.HighPart = atts.ftLastWriteTime.dwHighDateTime;
454 p += to_base64((uint64_t)li.QuadPart, p);
456 p += to_base64((uint64_t)atts.nFileSizeHigh, p);
458 p += to_base64((uint64_t)atts.nFileSizeLow, p);
460 return STREAM_UNIX_ATTRIBUTES_EX;
463 /* Define attributes that are legal to set with SetFileAttributes() */
464 #define SET_ATTRS ( \
465 FILE_ATTRIBUTE_ARCHIVE| \
466 FILE_ATTRIBUTE_HIDDEN| \
467 FILE_ATTRIBUTE_NORMAL| \
468 FILE_ATTRIBUTE_NOT_CONTENT_INDEXED| \
469 FILE_ATTRIBUTE_OFFLINE| \
470 FILE_ATTRIBUTE_READONLY| \
471 FILE_ATTRIBUTE_SYSTEM| \
472 FILE_ATTRIBUTE_TEMPORARY)
476 * Set Extended File Attributes for Win32
478 * fname is the original filename
479 * ofile is the output filename (may be in a different directory)
481 * Returns: true on success
484 static bool set_win32_attributes(JCR *jcr, ATTR *attr, BFILE *ofd)
486 char *p = attr->attrEx;
488 WIN32_FILE_ATTRIBUTE_DATA atts;
490 POOLMEM *win32_ofile;
492 if (!p_GetFileAttributesEx) {
496 if (!p || !*p) { /* we should have attributes */
497 Dmsg2(100, "Attributes missing. of=%s ofd=%d\n", attr->ofname, ofd->fid);
503 Dmsg2(100, "Attribs %s = %s\n", attr->ofname, attr->attrEx);
506 p += from_base64(&val, p);
507 atts.dwFileAttributes = val;
508 p++; /* skip space */
509 p += from_base64(&val, p);
511 atts.ftCreationTime.dwLowDateTime = li.LowPart;
512 atts.ftCreationTime.dwHighDateTime = li.HighPart;
513 p++; /* skip space */
514 p += from_base64(&val, p);
516 atts.ftLastAccessTime.dwLowDateTime = li.LowPart;
517 atts.ftLastAccessTime.dwHighDateTime = li.HighPart;
518 p++; /* skip space */
519 p += from_base64(&val, p);
521 atts.ftLastWriteTime.dwLowDateTime = li.LowPart;
522 atts.ftLastWriteTime.dwHighDateTime = li.HighPart;
524 p += from_base64(&val, p);
525 atts.nFileSizeHigh = val;
527 p += from_base64(&val, p);
528 atts.nFileSizeLow = val;
530 /* Convert to Windows path format */
531 win32_ofile = get_pool_memory(PM_FNAME);
532 unix_name_to_win32(&win32_ofile, attr->ofname);
536 /* At this point, we have reconstructed the WIN32_FILE_ATTRIBUTE_DATA pkt */
538 if (!is_bopen(ofd)) {
539 Dmsg1(100, "File not open: %s\n", attr->ofname);
540 bopen(ofd, attr->ofname, O_WRONLY|O_BINARY, 0); /* attempt to open the file */
544 Dmsg1(100, "SetFileTime %s\n", attr->ofname);
545 if (!SetFileTime(bget_handle(ofd),
546 &atts.ftCreationTime,
547 &atts.ftLastAccessTime,
548 &atts.ftLastWriteTime)) {
549 win_error(jcr, "SetFileTime:", win32_ofile);
554 Dmsg1(100, "SetFileAtts %s\n", attr->ofname);
555 if (!(atts.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {
556 if (!SetFileAttributes(win32_ofile, atts.dwFileAttributes & SET_ATTRS)) {
557 win_error(jcr, "SetFileAttributes:", win32_ofile);
560 free_pool_memory(win32_ofile);
564 void win_error(JCR *jcr, char *prefix, POOLMEM *win32_ofile)
566 DWORD lerror = GetLastError();
568 FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|
569 FORMAT_MESSAGE_FROM_SYSTEM,
576 Dmsg3(100, "Error in %s on file %s: ERR=%s\n", prefix, win32_ofile, msg);
577 strip_trailing_junk(msg);
578 Jmsg(jcr, M_ERROR, 0, _("Error in %s file %s: ERR=%s\n"), prefix, win32_ofile, msg);
582 void win_error(JCR *jcr, char *prefix, DWORD lerror)
585 FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|
586 FORMAT_MESSAGE_FROM_SYSTEM,
593 strip_trailing_junk(msg);
595 Jmsg2(jcr, M_ERROR, 0, _("Error in %s: ERR=%s\n"), prefix, msg);
597 MessageBox(NULL, msg, prefix, MB_OK);
603 /* Cygwin API definition */
604 extern "C" void cygwin_conv_to_win32_path(const char *path, char *win32_path);
606 void unix_name_to_win32(POOLMEM **win32_name, char *name)
608 /* One extra byte should suffice, but we double it */
609 *win32_name = check_pool_memory_size(*win32_name, 2*strlen(name)+1);
610 cygwin_conv_to_win32_path(name, *win32_name);
613 #endif /* HAVE_CYGWIN */