Line data Source code
1 : #include "burp.h"
2 : #include "base64.h"
3 : #include "cmd.h"
4 : #include "conf.h"
5 : #include "conffile.h"
6 : #include "client/main.h"
7 : #include "handy.h"
8 : #include "hexmap.h"
9 : #include "lock.h"
10 : #include "log.h"
11 : #include "strlist.h"
12 : #include "server/bedup.h"
13 : #include "server/main.h"
14 :
15 0 : static void usage_server(void)
16 : {
17 : #ifndef HAVE_WIN32
18 0 : printf("\nThe configuration file specifies whether %s runs in server or client mode.\n", PACKAGE_TARNAME);
19 0 : printf("\nServer usage: %s [options]\n", progname());
20 0 : printf("\n");
21 0 : printf(" Options:\n");
22 0 : printf(" -c <path> Path to conf file (default: %s).\n", config_default_path());
23 0 : printf(" -d <path> a single client in the status monitor.\n");
24 0 : printf(" -o <option> Override a given configuration option\n");
25 0 : printf(" (you can use this flag several times).\n");
26 0 : printf(" -F Stay in the foreground.\n");
27 0 : printf(" -g Generate initial CA certificates and exit.\n");
28 0 : printf(" -h|-? Print this text and exit.\n");
29 0 : printf(" -i Print index of symbols and exit.\n");
30 0 : printf(" -n Do not fork any children (implies '-F').\n");
31 0 : printf(" -Q Do not log to stdout\n");
32 0 : printf(" -t Dry-run to test config file syntax.\n");
33 0 : printf(" -v Log to stdout.\n");
34 0 : printf(" -V Print version and exit.\n");
35 0 : printf("Options to use with '-a c':\n");
36 0 : printf(" -C <client> Run as if forked via a connection from this client.\n");
37 0 : printf("\n");
38 : #endif
39 0 : }
40 :
41 0 : static void usage_client(void)
42 : {
43 0 : printf("\nClient usage: %s [options]\n", progname());
44 0 : printf("\n");
45 0 : printf(" Options:\n");
46 0 : printf(" -a <action> The action can be one of the following.\n");
47 0 : printf(" b: backup\n");
48 0 : printf(" delete: delete\n");
49 0 : printf(" d: diff\n");
50 0 : printf(" e: estimate\n");
51 0 : printf(" l: list (this is the default when an action is not given)\n");
52 0 : printf(" L: long list\n");
53 0 : printf(" m: monitor interface\n");
54 0 : printf(" p: parseable list\n");
55 0 : printf(" r: restore\n");
56 0 : printf(" R: Restore (matching ordered paths on stdin)\n");
57 : #ifndef HAVE_WIN32
58 0 : printf(" s: status monitor (ncurses)\n");
59 0 : printf(" S: status monitor snapshot\n");
60 : #endif
61 0 : printf(" t: timed backup\n");
62 0 : printf(" T: check backup timer, but do not actually backup\n");
63 0 : printf(" v: verify\n");
64 0 : printf(" V: Verify (matching ordered paths on stdin)\n");
65 0 : printf(" -b <number> Backup number (default: the most recent backup).\n");
66 0 : printf(" -c <path> Path to conf file (default: %s).\n", config_default_path());
67 0 : printf(" -d <directory> Directory to restore to, or directory to list.\n");
68 0 : printf(" -o <option> Override a given configuration option (you can use this flag several times).\n");
69 0 : printf(" -f Allow overwrite during restore.\n");
70 0 : printf(" -h|-? Print this text and exit.\n");
71 0 : printf(" -i Print index of symbols and exit.\n");
72 0 : printf(" -q <max secs> Randomised delay of starting a timed backup.\n");
73 0 : printf(" -Q Do not log to stdout\n");
74 0 : printf(" -r|-R <regex> Specify a regular expression (case sensitive or insensitive.\n");
75 0 : printf(" -s <number> Number of leading path components to strip during restore.\n");
76 0 : printf(" -t Dry-run to test config file syntax.\n");
77 0 : printf(" -V Print version and exit.\n");
78 0 : printf(" -v Log to stdout.\n");
79 : #ifdef HAVE_WIN32
80 : printf(" -X Do not use the Windows VSS API when restoring.\n");
81 : printf(" -x Do not use the Windows VSS API when restoring,\n");
82 : printf(" and strip out VSS data.\n");
83 : #else
84 0 : printf(" -x Strip Windows VSS data when restoring.\n");
85 0 : printf("Options to use with '-a S':\n");
86 0 : printf(" -C <client> Show a particular client.\n");
87 0 : printf(" -b <number> Show listable files in a particular backup (requires -C).\n");
88 0 : printf(" -d <path> Show a particular path in a backup (requires -C and -b).\n");
89 0 : printf(" -l <path> Log file for the status monitor.\n");
90 0 : printf(" -z <file> Dump a particular log file in a backup (requires -C and -b).\n");
91 : #endif
92 0 : printf("\n");
93 : #ifndef HAVE_WIN32
94 0 : printf(" See ");
95 : // Older versions of autoconf do not pick up PACKAGE_URL.
96 : #ifdef PACKAGE_URL
97 0 : printf("%s or ", PACKAGE_URL);
98 : #endif
99 0 : printf( "the man page ('man %s') for usage examples\n",
100 : PACKAGE_TARNAME);
101 0 : printf(" and additional configuration options.\n\n");
102 : #else
103 : printf(" See %s for usage examples and additional configuration\n",
104 : PACKAGE_TARNAME);
105 : printf(" options.\n\n");
106 : #endif
107 0 : }
108 :
109 0 : int reload(struct conf **confs, const char *conffile, bool firsttime)
110 : {
111 0 : if(!firsttime) logp("Reloading config\n");
112 :
113 0 : if(confs_init(confs)) return -1;
114 :
115 0 : if(conf_load_global_only(conffile, confs)) return -1;
116 :
117 0 : umask(get_mode_t(confs[OPT_UMASK]));
118 :
119 : // This will turn on syslogging which could not be turned on before
120 : // conf_load.
121 0 : log_fzp_set(NULL, confs);
122 :
123 : #ifndef HAVE_WIN32
124 0 : if(get_e_burp_mode(confs[OPT_BURP_MODE])==BURP_MODE_SERVER)
125 0 : setup_signals();
126 : #endif
127 :
128 : return 0;
129 : }
130 :
131 : static int replace_conf_str(struct conf *conf, const char *newval)
132 : {
133 0 : if(!newval) return 0;
134 0 : return set_string(conf, newval);
135 : }
136 :
137 : static void usage(void)
138 : {
139 0 : usage_server();
140 0 : usage_client();
141 : }
142 :
143 0 : static int parse_action(enum action *act, const char *optarg,
144 : struct strlist **cli_overrides)
145 : {
146 0 : if(!strncmp(optarg, "backup", 1))
147 0 : *act=ACTION_BACKUP;
148 0 : else if(!strncmp(optarg, "timedbackup", 1))
149 0 : *act=ACTION_BACKUP_TIMED;
150 0 : else if(!strncmp(optarg, "Timercheck", 1))
151 0 : *act=ACTION_TIMER_CHECK;
152 0 : else if(!strncmp(optarg, "restore", 1))
153 0 : *act=ACTION_RESTORE;
154 0 : else if(!strncmp(optarg, "Restore", 1))
155 : {
156 0 : *act=ACTION_RESTORE;
157 0 : strlist_add(cli_overrides, "restore_list=/dev/stdin", 0);
158 : }
159 0 : else if(!strncmp(optarg, "verify", 1))
160 0 : *act=ACTION_VERIFY;
161 0 : else if(!strncmp(optarg, "Verify", 1))
162 : {
163 0 : *act=ACTION_VERIFY;
164 0 : strlist_add(cli_overrides, "restore_list=/dev/stdin", 0);
165 : }
166 0 : else if(!strncmp(optarg, "list", 1))
167 0 : *act=ACTION_LIST;
168 0 : else if(!strncmp(optarg, "List", 1))
169 0 : *act=ACTION_LIST_LONG;
170 0 : else if(!strncmp(optarg, "parseablelist", 1))
171 0 : *act=ACTION_LIST_PARSEABLE;
172 0 : else if(!strncmp(optarg, "status", 1))
173 0 : *act=ACTION_STATUS;
174 0 : else if(!strncmp(optarg, "Status", 1))
175 0 : *act=ACTION_STATUS_SNAPSHOT;
176 0 : else if(!strncmp(optarg, "estimate", 1))
177 0 : *act=ACTION_ESTIMATE;
178 : // Make them spell 'delete' out fully so that it is less likely to be
179 : // used accidently.
180 0 : else if(!strncmp_w(optarg, "delete"))
181 0 : *act=ACTION_DELETE;
182 0 : else if(!strncmp(optarg, "diff", 1))
183 0 : *act=ACTION_DIFF;
184 0 : else if(!strncmp(optarg, "Diff", 1))
185 0 : *act=ACTION_DIFF_LONG;
186 0 : else if(!strncmp(optarg, "monitor", 1))
187 0 : *act=ACTION_MONITOR;
188 : else
189 : {
190 : usage();
191 0 : return -1;
192 : }
193 : return 0;
194 : }
195 :
196 0 : static void random_delay(struct conf **confs)
197 : {
198 : int delay;
199 0 : int randomise=get_int(confs[OPT_RANDOMISE]);
200 0 : if(!randomise) return;
201 0 : srand(getpid());
202 0 : delay=rand()%randomise;
203 0 : logp("Sleeping %d seconds\n", delay);
204 0 : sleep(delay);
205 : }
206 :
207 0 : static int run_test_confs(struct conf **confs, const char *client)
208 : {
209 0 : int ret=-1;
210 0 : struct conf **cconfs=NULL;
211 0 : if(!client)
212 : {
213 0 : confs_dump(confs, 0);
214 0 : ret=0;
215 0 : goto end;
216 : }
217 0 : if(!(cconfs=confs_alloc()))
218 : goto end;
219 0 : confs_init(cconfs);
220 0 : if(set_string(cconfs[OPT_CNAME], client)
221 0 : || set_string(cconfs[OPT_PEER_VERSION], PACKAGE_VERSION)
222 0 : || conf_load_clientconfdir(confs, cconfs))
223 : goto end;
224 0 : confs_dump(cconfs, CONF_FLAG_CC_OVERRIDE|CONF_FLAG_INCEXC);
225 :
226 : end:
227 0 : confs_free(&cconfs);
228 0 : return ret;
229 : }
230 :
231 0 : static struct lock *get_prog_lock(struct conf **confs)
232 : {
233 0 : struct lock *lock=NULL;
234 0 : const char *lockfile=confs_get_lockfile(confs);
235 0 : if(!(lock=lock_alloc_and_init(lockfile)))
236 : goto error;
237 0 : lock_get(lock);
238 0 : switch(lock->status)
239 : {
240 : case GET_LOCK_GOT:
241 : return lock;
242 : case GET_LOCK_NOT_GOT:
243 0 : logp("Could not get lockfile.\n");
244 0 : logp("Another process is probably running.\n");
245 0 : goto error;
246 : case GET_LOCK_ERROR:
247 : default:
248 0 : logp("Could not get lockfile.\n");
249 0 : logp("Maybe you do not have permissions to write to %s.\n", lockfile);
250 0 : goto error;
251 : }
252 : error:
253 0 : lock_free(&lock);
254 0 : return NULL;
255 : }
256 :
257 : #ifdef HAVE_WIN32
258 : #define main RealMain
259 : #endif
260 : #ifndef UTEST
261 : static
262 : #endif
263 0 : int real_main(int argc, char *argv[])
264 : {
265 0 : int ret=1;
266 0 : int option=0;
267 0 : int daemon=1;
268 0 : int forking=1;
269 0 : int strip=0;
270 0 : int randomise=0;
271 0 : struct lock *lock=NULL;
272 0 : struct conf **confs=NULL;
273 0 : int forceoverwrite=0;
274 0 : enum action act=ACTION_LIST;
275 0 : const char *backup=NULL;
276 0 : const char *backup2=NULL;
277 0 : char *restoreprefix=NULL;
278 0 : char *stripfrompath=NULL;
279 0 : const char *regex=NULL;
280 0 : const char *browsefile=NULL;
281 0 : char *browsedir=NULL;
282 0 : const char *conffile=config_default_path();
283 0 : const char *orig_client=NULL;
284 0 : const char *logfile=NULL;
285 : // The orig_client is the original client that the normal client
286 : // would like to restore from.
287 : #ifndef HAVE_WIN32
288 0 : int generate_ca_only=0;
289 : #endif
290 0 : enum vss_restore vss_restore=VSS_RESTORE_ON;
291 0 : int test_confs=0;
292 : enum burp_mode mode;
293 0 : struct strlist *cli_overrides=NULL;
294 0 : int keep_readall_caps=0;
295 0 : int regex_case_insensitive=0;
296 :
297 0 : log_init(argv[0]);
298 : #ifndef HAVE_WIN32
299 0 : if(!strcmp(prog, "bedup"))
300 0 : return run_bedup(argc, argv);
301 : #endif
302 :
303 0 : while((option=getopt(argc, argv, "a:b:C:c:d:o:Ffghijl:nQq:R:r:s:tVvXxz:?"))!=-1)
304 : {
305 0 : switch(option)
306 : {
307 : case 'a':
308 0 : if(parse_action(&act, optarg,
309 : &cli_overrides)) goto end;
310 : break;
311 : case 'b':
312 : // The diff command may have two backups
313 : // specified.
314 0 : if(!backup2 && backup) backup2=optarg;
315 0 : if(!backup) backup=optarg;
316 : break;
317 : case 'C':
318 0 : orig_client=optarg;
319 0 : break;
320 : case 'c':
321 0 : conffile=optarg;
322 0 : break;
323 : case 'd':
324 0 : restoreprefix=optarg; // for restores
325 0 : browsedir=optarg; // for lists
326 0 : break;
327 : case 'F':
328 : daemon=0;
329 : break;
330 : case 'f':
331 0 : forceoverwrite=1;
332 0 : break;
333 : case 'g':
334 : #ifndef HAVE_WIN32
335 0 : generate_ca_only=1;
336 : #endif
337 0 : break;
338 : case 'i':
339 0 : cmd_print_all();
340 0 : ret=0;
341 0 : goto end;
342 : case 'l':
343 0 : logfile=optarg;
344 0 : break;
345 : case 'n':
346 0 : forking=0;
347 0 : break;
348 : case 'o':
349 0 : strlist_add(&cli_overrides, optarg, 0);
350 0 : break;
351 : case 'Q':
352 0 : strlist_add(&cli_overrides, "progress_counter=0", 0);
353 0 : strlist_add(&cli_overrides, "stdout=0", 0);
354 0 : break;
355 : case 'q':
356 0 : randomise=atoi(optarg);
357 0 : break;
358 : case 'R':
359 0 : regex_case_insensitive=1;
360 0 : regex=optarg;
361 0 : break;
362 : case 'r':
363 0 : regex_case_insensitive=0;
364 0 : regex=optarg;
365 0 : break;
366 : case 's':
367 0 : strip=atoi(optarg);
368 0 : break;
369 : case 'V':
370 0 : printf("%s-%s\n", progname(), PACKAGE_VERSION);
371 0 : ret=0;
372 0 : goto end;
373 : case 'v':
374 0 : strlist_add(&cli_overrides, "stdout=1", 0);
375 0 : break;
376 : case 'X':
377 0 : vss_restore=VSS_RESTORE_OFF;
378 0 : break;
379 : case 'x':
380 0 : vss_restore=VSS_RESTORE_OFF_STRIP;
381 0 : break;
382 : case 't':
383 0 : test_confs=1;
384 0 : break;
385 : case 'z':
386 0 : browsefile=optarg;
387 0 : break;
388 : case 'h':
389 : case '?':
390 : default:
391 : usage();
392 : goto end;
393 : }
394 : }
395 0 : if(optind<argc)
396 : {
397 : usage();
398 : goto end;
399 : }
400 :
401 0 : if(act==ACTION_MONITOR)
402 : {
403 : // Try to output everything in JSON.
404 0 : log_set_json(1);
405 : // Need to do this so that processes reading stdout get the
406 : // result of the printfs of logp straight away.
407 0 : setvbuf(stdout, NULL, _IONBF, 0);
408 : }
409 :
410 0 : if(act==ACTION_LIST_PARSEABLE)
411 0 : strlist_add(&cli_overrides, "stdout=0", 0);
412 :
413 0 : conf_set_cli_overrides(cli_overrides);
414 0 : if(!(confs=confs_alloc()))
415 : goto end;
416 :
417 0 : if(reload(confs, conffile, 1))
418 : goto end;
419 :
420 : // Dry run to test config file syntax.
421 0 : if(test_confs)
422 : {
423 0 : ret=run_test_confs(confs, orig_client);
424 0 : goto end;
425 : }
426 :
427 0 : if(!backup) switch(act)
428 : {
429 : case ACTION_DELETE:
430 0 : logp("No backup specified for deletion.\n");
431 0 : goto end;
432 : case ACTION_RESTORE:
433 : case ACTION_VERIFY:
434 : case ACTION_DIFF:
435 : case ACTION_DIFF_LONG:
436 0 : logp("No backup specified. Using the most recent.\n");
437 0 : backup="0";
438 : default:
439 : break;
440 : }
441 0 : if(!backup2) switch(act)
442 : {
443 : case ACTION_DIFF:
444 : case ACTION_DIFF_LONG:
445 0 : logp("No second backup specified. Using file system scan.\n");
446 0 : backup2="n"; // For 'next'.
447 : default:
448 : break;
449 : }
450 :
451 : // The logfile option is only used for the status client stuff.
452 0 : if(logfile
453 0 : && (act!=ACTION_STATUS
454 0 : && act!=ACTION_STATUS_SNAPSHOT))
455 0 : logp("-l <logfile> option obsoleted\n");
456 :
457 0 : if(orig_client
458 0 : && *orig_client
459 0 : && set_string(confs[OPT_ORIG_CLIENT], orig_client))
460 : goto end;
461 :
462 : // The random delay needs to happen before the lock is got, otherwise
463 : // you would never be able to use burp by hand.
464 0 : if(randomise) set_int(confs[OPT_RANDOMISE], randomise);
465 0 : mode=get_e_burp_mode(confs[OPT_BURP_MODE]);
466 0 : if(mode==BURP_MODE_CLIENT
467 0 : && (act==ACTION_BACKUP_TIMED || act==ACTION_TIMER_CHECK))
468 0 : random_delay(confs);
469 :
470 0 : if(mode==BURP_MODE_SERVER)
471 : {
472 0 : switch(act)
473 : {
474 : case ACTION_CHAMP_CHOOSER:
475 : // Need to run without getting the lock.
476 : break;
477 : default:
478 0 : if(!(lock=get_prog_lock(confs)))
479 : goto end;
480 : break;
481 : }
482 : }
483 0 : else if(mode==BURP_MODE_CLIENT)
484 : {
485 0 : set_int(confs[OPT_VSS_RESTORE], vss_restore);
486 0 : switch(act)
487 : {
488 : case ACTION_BACKUP:
489 : case ACTION_BACKUP_TIMED:
490 : case ACTION_TIMER_CHECK:
491 : #ifdef ENABLE_KEEP_READALL_CAPS_SUPPORT
492 : keep_readall_caps=get_int(confs[OPT_READALL]);
493 : // readall=1 cannot work with atime=0 (O_NOATIME)
494 : if (keep_readall_caps)
495 : set_int(confs[OPT_ATIME], 1);
496 : #endif
497 : // Need to get the lock.
498 0 : if(!(lock=get_prog_lock(confs)))
499 : goto end;
500 : break;
501 : default:
502 : break;
503 : }
504 : }
505 :
506 : // Change privileges after having got the lock, for convenience.
507 0 : if(chuser_and_or_chgrp(
508 0 : get_string(confs[OPT_USER]), get_string(confs[OPT_GROUP]),
509 : keep_readall_caps))
510 : return -1;
511 :
512 0 : set_int(confs[OPT_OVERWRITE], forceoverwrite);
513 0 : set_int(confs[OPT_STRIP], strip);
514 0 : set_int(confs[OPT_FORK], forking);
515 0 : set_int(confs[OPT_DAEMON], daemon);
516 0 : set_int(confs[OPT_REGEX_CASE_INSENSITIVE], regex_case_insensitive);
517 :
518 0 : strip_trailing_slashes(&restoreprefix);
519 0 : strip_trailing_slashes(&browsedir);
520 0 : if(replace_conf_str(confs[OPT_BACKUP], backup)
521 0 : || replace_conf_str(confs[OPT_BACKUP2], backup2)
522 0 : || replace_conf_str(confs[OPT_RESTOREPREFIX], restoreprefix)
523 0 : || replace_conf_str(confs[OPT_STRIP_FROM_PATH], stripfrompath)
524 0 : || replace_conf_str(confs[OPT_REGEX], regex)
525 0 : || replace_conf_str(confs[OPT_BROWSEFILE], browsefile)
526 0 : || replace_conf_str(confs[OPT_BROWSEDIR], browsedir)
527 0 : || replace_conf_str(confs[OPT_MONITOR_LOGFILE], logfile))
528 : goto end;
529 :
530 0 : base64_init();
531 :
532 0 : if(mode==BURP_MODE_SERVER)
533 : {
534 : #ifdef HAVE_WIN32
535 : logp("Sorry, server mode is not implemented for Windows.\n");
536 : #else
537 0 : return server(confs, conffile, lock, generate_ca_only);
538 : #endif
539 : }
540 : else
541 : {
542 0 : ret=client(confs, act);
543 : }
544 :
545 : end:
546 0 : lock_release(lock);
547 0 : lock_free(&lock);
548 0 : confs_free(&confs);
549 0 : strlists_free(&cli_overrides);
550 0 : return ret;
551 : }
552 :
553 : #ifndef UTEST
554 : int main(int argc, char *argv[])
555 : {
556 : return real_main(argc, argv);
557 : }
558 : #endif
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