3 * Dumb program to extract files from a Bacula backup.
9 Copyright (C) 2000, 2001, 2002 Kern Sibbald and John Walker
11 This program is free software; you can redistribute it and/or
12 modify it under the terms of the GNU General Public License as
13 published by the Free Software Foundation; either version 2 of
14 the License, or (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
21 You should have received a copy of the GNU General Public
22 License along with this program; if not, write to the Free
23 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
30 #include "findlib/find.h"
32 static void do_extract(char *fname, char *prefix);
33 static void print_ls_output(char *fname, struct stat *statp);
36 static DEVICE *dev = NULL;
41 static FF_PKT *ff = &my_ff;
46 "Usage: bextract [-d debug_level] <bacula-archive> <directory-to-store-files>\n"
47 " -dnn set debug level to nn\n"
48 " -e <file> exclude list\n"
49 " -i <file> include list\n"
50 " -? print this message\n\n");
54 static void my_free_jcr(JCR *jcr)
59 int main (int argc, char *argv[])
65 my_name_is(argc, argv, "bextract");
67 memset(ff, 0, sizeof(FF_PKT));
68 init_include_exclude_files(ff);
70 while ((ch = getopt(argc, argv, "d:e:i:?")) != -1) {
72 case 'd': /* debug level */
73 debug_level = atoi(optarg);
78 case 'e': /* exclude list */
79 if ((fd = fopen(optarg, "r")) == NULL) {
80 Dmsg2(0, "Could not open exclude file: %s, ERR=%s\n",
81 optarg, strerror(errno));
84 while (fgets(line, sizeof(line), fd) != NULL) {
85 strip_trailing_junk(line);
86 Dmsg1(900, "add_exclude %s\n", line);
87 add_fname_to_exclude_list(ff, line);
92 case 'i': /* include list */
93 if ((fd = fopen(optarg, "r")) == NULL) {
94 Dmsg2(0, "Could not open include file: %s, ERR=%s\n",
95 optarg, strerror(errno));
98 while (fgets(line, sizeof(line), fd) != NULL) {
99 strip_trailing_junk(line);
100 Dmsg1(900, "add_include %s\n", line);
101 add_fname_to_include_list(ff, 0, line);
116 Dmsg0(0, "Wrong number of arguments: \n");
121 * Ensure that every message is always printed
123 for (i=1; i<=M_MAX; i++) {
124 add_msg_dest(MD_STDOUT, i, NULL, NULL);
127 jcr = new_jcr(sizeof(JCR), my_free_jcr);
128 jcr->VolSessionId = 1;
129 jcr->VolSessionTime = (uint32_t)time(NULL);
132 do_extract(argv[0], argv[1]);
139 static void do_extract(char *devname, char *where)
147 long record_file_index;
151 char *fname; /* original file name */
152 char *ofile; /* output name with prefix */
153 char *lname; /* link name */
154 int wherelen; /* prefix length */
156 if (strncmp(devname, "/dev/", 5) != 0) {
157 /* Try stripping file part */
158 p = devname + strlen(devname);
159 while (p >= devname && *p != '/') {
163 strcpy(VolName, p+1);
168 dev = init_dev(NULL, devname);
169 if (!dev || !open_device(dev)) {
170 Emsg1(M_ABORT, 0, "Cannot open %s\n", devname);
172 Dmsg0(90, "Device opened for read.\n");
174 if (stat(where, &statp) < 0) {
175 Emsg2(M_ABORT, 0, "Cannot stat %s. It must exist. ERR=%s\n",
176 where, strerror(errno));
178 if (!S_ISDIR(statp.st_mode)) {
179 Emsg1(M_ABORT, 0, "%s must be a directory.\n", where);
182 wherelen = strlen(where);
183 fname = (char *)get_pool_memory(PM_FNAME);
184 ofile = (char *)get_pool_memory(PM_FNAME);
185 lname = (char *)get_pool_memory(PM_FNAME);
187 block = new_block(dev);
189 strcpy(jcr->VolumeName, VolName);
191 if (!acquire_device_for_read(jcr, dev, block)) {
192 Emsg1(M_ABORT, 0, "Cannot open %s\n", devname);
195 memset(&rec, 0, sizeof(rec));
196 rec.data = (char *) get_memory(70000);
200 if (!read_record(dev, block, &rec)) {
202 if (dev->state & ST_EOT) {
205 if (dev->state & ST_EOF) {
206 continue; /* try again */
208 Dmsg0(0, "Read Record got a bad record\n");
209 status_dev(dev, &status);
210 Dmsg1(20, "Device status: %x\n", status);
212 Emsg0(M_ABORT, 0, "Unexpected End of Data\n");
213 else if (status & MT_EOT)
214 Emsg0(M_ABORT, 0, "Unexpected End of Tape\n");
215 else if (status & MT_EOF)
216 Emsg0(M_ABORT, 0, "Unexpected End of File\n");
217 else if (status & MT_DR_OPEN)
218 Emsg0(M_ABORT, 0, "Tape Door is Open\n");
219 else if (!(status & MT_ONLINE))
220 Emsg0(M_ABORT, 0, "Unexpected Tape is Off-line\n");
222 Emsg3(M_ABORT, 0, "Read error %d on Record Header %s: %s\n", n, dev_name(dev), strerror(errno));
226 /* This is no longer used */
227 if (rec.VolSessionId == 0 && rec.VolSessionTime == 0) {
228 Emsg0(M_ERROR, 0, "Zero header record. This shouldn't happen.\n");
229 break; /* END OF FILE */
233 * Check for Start or End of Session Record
236 if (rec.FileIndex < 0) {
238 switch (rec.FileIndex) {
240 rtype = "Fresh Volume Label";
243 rtype = "Volume Label";
246 rtype = "Begin Session";
249 rtype = "End Session";
252 rtype = "End of Media";
258 if (debug_level > 0) {
259 printf("%s Record: VolSessionId=%d VolSessionTime=%d JobId=%d DataLen=%d\n",
260 rtype, rec.VolSessionId, rec.VolSessionTime, rec.Stream, rec.data_len);
265 /* File Attributes stream */
266 if (rec.Stream == STREAM_UNIX_ATTRIBUTES) {
269 /* If extracting, it was from previous stream, so
270 * close the output file.
274 Emsg0(M_ABORT, 0, "Logic error output file should be open\n");
279 set_statp(jcr, fname, ofile, lname, type, &statp);
282 if (sizeof_pool_memory(fname) < rec.data_len) {
283 fname = (char *) realloc_pool_memory(fname, rec.data_len + 1);
285 if (sizeof_pool_memory(ofile) < sizeof_pool_memory(fname) + wherelen + 1) {
286 ofile = (char *)realloc_pool_memory(ofile, sizeof_pool_memory(fname) + wherelen + 1);
288 if (sizeof_pool_memory(lname) < rec.data_len) {
289 ofile = (char *)realloc_pool_memory(ofile, rec.data_len + 1);
295 * An Attributes record consists of:
300 * Link name (if file linked i.e. FT_LNK)
303 sscanf(rec.data, "%ld %d %s", &record_file_index, &type, fname);
304 if (record_file_index != rec.FileIndex)
305 Emsg2(M_ABORT, 0, "Record header file index %ld not equal record index %ld\n",
306 rec.FileIndex, record_file_index);
308 /* Skip to attributes */
311 /* Skip to Link name */
312 if (type == FT_LNK) {
317 strcat(lname, lp); /* "save" link name */
322 /* Is this the file we want? */
323 if (file_is_included(ff, fname) && !file_is_excluded(ff, fname)) {
325 decode_stat(ap, &statp);
327 * Prepend the where directory so that the
328 * files are put where the user wants.
330 * We do a little jig here to handle Win32 files with
332 * If where is null and we are running on a win32 client,
334 * Otherwise, if the second character of the filename is a
335 * colon (:), change it into a slash (/) -- this creates
336 * a reasonable pathname on most systems.
338 strcpy(ofile, where);
339 if (fname[1] == ':') {
341 strcat(ofile, fname);
344 strcat(ofile, fname);
346 /* Dmsg1(000, "Restoring: %s\n", ofile); */
348 extract = create_file(jcr, fname, ofile, lname, type, &statp, &ofd);
351 print_ls_output(ofile, &statp);
355 /* Data stream and extracting */
356 } else if (rec.Stream == STREAM_FILE_DATA) {
358 total += rec.data_len;
359 Dmsg2(8, "Write %ld bytes, total=%ld\n", rec.data_len, total);
360 if ((uint32_t)write(ofd, rec.data, rec.data_len) != rec.data_len) {
361 Emsg1(M_ABORT, 0, "Write error: %s\n", strerror(errno));
365 /* If extracting, wierd stream (not 1 or 2), close output file anyway */
366 } else if (extract) {
368 Emsg0(M_ABORT, 0, "Logic error output file should be open\n");
373 set_statp(jcr, fname, ofile, lname, type, &statp);
374 } else if (rec.Stream != STREAM_MD5_SIGNATURE) {
375 Dmsg2(0, "None of above!!! stream=%d data=%s\n", rec.Stream, rec.data);
379 /* If output file is still open, it was the last one in the
380 * archive since we just hit an end of file, so close the file.
384 set_statp(jcr, fname, ofile, lname, type, &statp);
386 release_device(jcr, dev, block);
388 free_pool_memory(fname);
389 free_pool_memory(ofile);
390 free_pool_memory(lname);
396 extern char *getuser(uid_t uid);
397 extern char *getgroup(gid_t gid);
399 static void print_ls_output(char *fname, struct stat *statp)
405 p = encode_mode(statp->st_mode, buf);
406 n = sprintf(p, " %2d ", (uint32_t)statp->st_nlink);
408 n = sprintf(p, "%-8.8s %-8.8s", getuser(statp->st_uid), getgroup(statp->st_gid));
410 n = sprintf(p, "%8lld ", (uint64_t)statp->st_size);
412 p = encode_time(statp->st_ctime, p);