3 * Dumb program to extract files from a Bacula backup.
11 Copyright (C) 2000, 2001, 2002 Kern Sibbald and John Walker
13 This program is free software; you can redistribute it and/or
14 modify it under the terms of the GNU General Public License as
15 published by the Free Software Foundation; either version 2 of
16 the License, or (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 General Public License for more details.
23 You should have received a copy of the GNU General Public
24 License along with this program; if not, write to the Free
25 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
32 #include "findlib/find.h"
41 static void do_extract(char *fname);
42 static void record_cb(JCR *jcr, DEVICE *dev, DEV_BLOCK *block, DEV_RECORD *rec);
44 static DEVICE *dev = NULL;
48 static FF_PKT *ff = &my_ff;
49 static BSR *bsr = NULL;
50 static int extract = FALSE;
51 static long record_file_index;
52 static long total = 0;
53 static POOLMEM *fname; /* original file name */
54 static POOLMEM *ofile; /* output name with prefix */
55 static POOLMEM *lname; /* link name */
56 static POOLMEM *attribsEx; /* extended attributes (Win32) */
58 static int wherelen; /* prefix length */
59 static uint32_t num_files = 0;
60 static struct stat statp;
61 static uint32_t compress_buf_size = 70000;
62 static POOLMEM *compress_buf;
65 static int prog_name_msg = 0;
66 static int win32_data_msg = 0;
67 static char *VolumeName = NULL;
69 static char *wbuf; /* write buffer address */
70 static uint32_t wsize; /* write size */
71 static uint64_t fileAddr = 0; /* file write address */
73 #define CONFIG_FILE "bacula-sd.conf"
80 "\nVersion: " VERSION " (" BDATE ")\n\n"
81 "Usage: bextract [-d debug_level] <bacula-archive> <directory-to-store-files>\n"
82 " -b <file> specify a bootstrap file\n"
83 " -c <file> specify a configuration file\n"
84 " -dnn set debug level to nn\n"
85 " -e <file> exclude list\n"
86 " -i <file> include list\n"
87 " -V specify Volume names (separated by |)\n"
88 " -? print this message\n\n");
93 int main (int argc, char *argv[])
100 working_directory = "/tmp";
101 my_name_is(argc, argv, "bextract");
102 init_msg(NULL, NULL); /* setup message handler */
104 memset(ff, 0, sizeof(FF_PKT));
105 init_include_exclude_files(ff);
108 while ((ch = getopt(argc, argv, "b:c:d:e:i:?")) != -1) {
110 case 'b': /* bootstrap file */
111 bsr = parse_bsr(NULL, optarg);
115 case 'c': /* specify config file */
116 if (configfile != NULL) {
119 configfile = bstrdup(optarg);
122 case 'd': /* debug level */
123 debug_level = atoi(optarg);
124 if (debug_level <= 0)
128 case 'e': /* exclude list */
129 if ((fd = fopen(optarg, "r")) == NULL) {
130 Pmsg2(0, "Could not open exclude file: %s, ERR=%s\n",
131 optarg, strerror(errno));
134 while (fgets(line, sizeof(line), fd) != NULL) {
135 strip_trailing_junk(line);
136 Dmsg1(900, "add_exclude %s\n", line);
137 add_fname_to_exclude_list(ff, line);
142 case 'i': /* include list */
143 if ((fd = fopen(optarg, "r")) == NULL) {
144 Pmsg2(0, "Could not open include file: %s, ERR=%s\n",
145 optarg, strerror(errno));
148 while (fgets(line, sizeof(line), fd) != NULL) {
149 strip_trailing_junk(line);
150 Dmsg1(900, "add_include %s\n", line);
151 add_fname_to_include_list(ff, 0, line);
157 case 'V': /* Volume name */
171 Pmsg0(0, "Wrong number of arguments: \n");
175 if (configfile == NULL) {
176 configfile = bstrdup(CONFIG_FILE);
179 parse_config(configfile);
181 if (!got_inc) { /* If no include file, */
182 add_fname_to_include_list(ff, 0, "/"); /* include everything */
192 Pmsg1(000, "%d Program Name and/or Program Data Stream records ignored.\n",
195 if (win32_data_msg) {
196 Pmsg1(000, "%d Win32 data or Win32 gzip data stream records. Ignored.\n",
202 static void do_extract(char *devname)
205 jcr = setup_jcr("bextract", devname, bsr, VolumeName);
206 dev = setup_to_access_device(jcr, 1); /* acquire for read */
211 /* Make sure where directory exists and that it is a directory */
212 if (stat(where, &statp) < 0) {
213 Emsg2(M_ERROR_TERM, 0, "Cannot stat %s. It must exist. ERR=%s\n",
214 where, strerror(errno));
216 if (!S_ISDIR(statp.st_mode)) {
217 Emsg1(M_ERROR_TERM, 0, "%s must be a directory.\n", where);
220 wherelen = strlen(where);
221 fname = get_pool_memory(PM_FNAME);
222 ofile = get_pool_memory(PM_FNAME);
223 lname = get_pool_memory(PM_FNAME);
224 attribsEx = get_pool_memory(PM_FNAME);
226 compress_buf = get_memory(compress_buf_size);
228 read_records(jcr, dev, record_cb, mount_next_read_volume);
229 /* If output file is still open, it was the last one in the
230 * archive since we just hit an end of file, so close the file.
232 if (is_bopen(&bfd)) {
233 set_attributes(jcr, fname, ofile, lname, type, stream, &statp,
236 release_device(jcr, dev);
238 free_pool_memory(fname);
239 free_pool_memory(ofile);
240 free_pool_memory(lname);
241 free_pool_memory(compress_buf);
244 printf("%u files restored.\n", num_files);
249 * Called here for each record from read_records()
251 static void record_cb(JCR *jcr, DEVICE *dev, DEV_BLOCK *block, DEV_RECORD *rec)
255 if (rec->FileIndex < 0) {
256 return; /* we don't want labels */
259 /* File Attributes stream */
260 if (rec->Stream == STREAM_UNIX_ATTRIBUTES || rec->Stream == STREAM_WIN32_ATTRIBUTES) {
261 char *ap, *lp, *fp, *apex;
263 stream = rec->Stream;
265 /* If extracting, it was from previous stream, so
266 * close the output file.
269 if (!is_bopen(&bfd)) {
270 Emsg0(M_ERROR, 0, "Logic error output file should be open but is not.\n");
273 set_attributes(jcr, fname, ofile, lname, type, stream, &statp,
277 if (sizeof_pool_memory(fname) < rec->data_len) {
278 fname = realloc_pool_memory(fname, rec->data_len + 1);
280 if (sizeof_pool_memory(ofile) < rec->data_len + wherelen + 1) {
281 ofile = realloc_pool_memory(ofile, rec->data_len + wherelen + 1);
283 if (sizeof_pool_memory(lname) < rec->data_len) {
284 lname = realloc_pool_memory(lname, rec->data_len + wherelen + 1);
290 * An Attributes record consists of:
295 * Link name (if file linked i.e. FT_LNK)
296 * Extended Attributes (Win32)
299 sscanf(rec->data, "%ld %d", &record_file_index, &type);
300 if (record_file_index != rec->FileIndex)
301 Emsg2(M_ERROR_TERM, 0, "Record header file index %ld not equal record index %ld\n",
302 rec->FileIndex, record_file_index);
304 while (*ap++ != ' ') /* skip record file index */
306 while (*ap++ != ' ') /* skip type */
308 /* Save filename and position to attributes */
313 *fp = *ap++; /* terminate filename & point to attribs */
315 /* Skip to Link name */
316 if (type == FT_LNK || type == FT_LNKSAVED) {
325 if (rec->Stream == STREAM_WIN32_ATTRIBUTES) {
326 apex = ap; /* start at attributes */
327 while (*apex++ != 0) { /* skip attributes */
330 while (*apex++ != 0) { /* skip link name */
333 pm_strcpy(&attribsEx, apex); /* make a copy of Extended attributes */
335 *attribsEx = 0; /* no extended attributes */
339 if (file_is_included(ff, fname) && !file_is_excluded(ff, fname)) {
342 decode_stat(ap, &statp, &LinkFI);
344 * Prepend the where directory so that the
345 * files are put where the user wants.
347 * We do a little jig here to handle Win32 files with
348 * a drive letter -- we simply strip the drive: from
349 * every filename if a prefix is supplied.
352 strcpy(ofile, fname);
356 strcpy(ofile, where);
357 if (win32_client && fname[1] == ':') {
358 fn = fname+2; /* skip over drive: */
360 fn = fname; /* take whole name */
362 /* Ensure where is terminated with a slash */
363 if (where[wherelen-1] != '/' && fn[0] != '/') {
366 strcat(ofile, fn); /* copy rest of name */
367 /* Fixup link name for hard links, but not for
370 if (type == FT_LNKSAVED) {
371 if (lp[0] == '/') { /* if absolute path */
372 strcpy(lname, where);
374 if (win32_client && lp[1] == ':') {
375 strcat(lname, lp+2); /* copy rest of name */
377 strcat(lname, lp); /* On Unix systems we take everything */
382 /* Pmsg1(000, "Restoring: %s\n", ofile); */
385 stat = create_file(jcr, fname, ofile, lname, type, stream,
386 &statp, attribsEx, &bfd, REPLACE_ALWAYS);
393 print_ls_output(ofile, lname, type, &statp);
398 set_attributes(jcr, fname, ofile, lname, type, stream, &statp,
400 print_ls_output(ofile, lname, type, &statp);
407 /* Data stream and extracting */
408 } else if (rec->Stream == STREAM_FILE_DATA || rec->Stream == STREAM_SPARSE_DATA) {
410 if (rec->Stream == STREAM_SPARSE_DATA) {
413 wbuf = rec->data + SPARSE_FADDR_SIZE;
414 wsize = rec->data_len - SPARSE_FADDR_SIZE;
415 ser_begin(rec->data, SPARSE_FADDR_SIZE);
417 if (fileAddr != faddr) {
419 if (blseek(&bfd, (off_t)fileAddr, SEEK_SET) < 0) {
420 Emsg2(M_ERROR_TERM, 0, _("Seek error on %s: %s\n"), ofile, strerror(errno));
425 wsize = rec->data_len;
428 Dmsg2(8, "Write %u bytes, total=%u\n", wsize, total);
429 if ((uint32_t)bwrite(&bfd, wbuf, wsize) != wsize) {
430 Emsg2(M_ERROR_TERM, 0, _("Write error on %s: %s\n"), ofile, strerror(errno));
435 } else if (rec->Stream == STREAM_GZIP_DATA || rec->Stream == STREAM_SPARSE_GZIP_DATA) {
441 if (rec->Stream == STREAM_SPARSE_GZIP_DATA) {
444 wbuf = rec->data + SPARSE_FADDR_SIZE;
445 wsize = rec->data_len - SPARSE_FADDR_SIZE;
446 ser_begin(rec->data, SPARSE_FADDR_SIZE);
448 if (fileAddr != faddr) {
450 if (blseek(&bfd, (off_t)fileAddr, SEEK_SET) < 0) {
451 Emsg2(M_ERROR, 0, _("Seek error on %s: %s\n"), ofile, strerror(errno));
456 wsize = rec->data_len;
458 compress_len = compress_buf_size;
459 if ((stat=uncompress((Bytef *)compress_buf, &compress_len,
460 (const Bytef *)wbuf, (uLong)wsize) != Z_OK)) {
461 Emsg1(M_ERROR_TERM, 0, _("Uncompression error. ERR=%d\n"), stat);
464 Dmsg2(100, "Write uncompressed %d bytes, total before write=%d\n", compress_len, total);
465 if ((uLongf)bwrite(&bfd, compress_buf, (size_t)compress_len) != compress_len) {
466 Pmsg0(0, "===Write error===\n");
467 Emsg2(M_ERROR_TERM, 0, _("Write error on %s: %s\n"), ofile, strerror(errno));
469 total += compress_len;
470 fileAddr += compress_len;
471 Dmsg2(100, "Compress len=%d uncompressed=%d\n", rec->data_len,
476 Emsg0(M_ERROR, 0, "GZIP data stream found, but GZIP not configured!\n");
481 /* If extracting, wierd stream (not 1 or 2), close output file anyway */
482 } else if (extract) {
483 if (!is_bopen(&bfd)) {
484 Emsg0(M_ERROR, 0, "Logic error output file should be open but is not.\n");
487 set_attributes(jcr, fname, ofile, lname, type, stream, &statp,
489 } else if (rec->Stream == STREAM_PROGRAM_NAMES || rec->Stream == STREAM_PROGRAM_DATA) {
490 if (!prog_name_msg) {
491 Pmsg0(000, "Got Program Name or Data Stream. Ignored.\n");
494 } else if (rec->Stream == STREAM_WIN32_DATA || rec->Stream == STREAM_WIN32_GZIP_DATA) {
495 if (!win32_data_msg) {
496 Pmsg0(000, "Got Win32 data or Win32 gzip data stream. Ignored.\n");
499 } else if (!(rec->Stream == STREAM_MD5_SIGNATURE ||
500 rec->Stream == STREAM_SHA1_SIGNATURE)) {
501 Pmsg2(0, "None of above!!! stream=%d data=%s\n", rec->Stream, rec->data);
508 /* Dummies to replace askdir.c */
509 int dir_get_volume_info(JCR *jcr, int writing) { return 1;}
510 int dir_find_next_appendable_volume(JCR *jcr) { return 1;}
511 int dir_update_volume_info(JCR *jcr, VOLUME_CAT_INFO *vol, int relabel) { return 1; }
512 int dir_create_jobmedia_record(JCR *jcr) { return 1; }
513 int dir_ask_sysop_to_mount_next_volume(JCR *jcr, DEVICE *dev) { return 1; }
514 int dir_update_file_attributes(JCR *jcr, DEV_RECORD *rec) { return 1;}
515 int dir_send_job_status(JCR *jcr) {return 1;}
518 int dir_ask_sysop_to_mount_volume(JCR *jcr, DEVICE *dev)
520 fprintf(stderr, "Mount Volume %s on device %s and press return when ready: ",
521 jcr->VolumeName, dev_name(dev));