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 "server/main.h"
12 : #include "server/protocol1/bedup.h"
13 : #include "server/protocol2/bsigs.h"
14 : #include "server/protocol2/champ_chooser/champ_server.h"
15 :
16 : static char *get_conf_path(void)
17 : {
18 : static char path[256]="";
19 : #ifdef HAVE_WIN32
20 : char *pfenv=NULL;
21 :
22 : // Burp used to always install to 'C:/Program Files/Burp/', but as
23 : // of 1.3.11, it changed to %PROGRAMFILES%. Still want the old way
24 : // to work though. So check %PROGRAMFILES% first, then fall back.
25 : if((pfenv=getenv("PROGRAMFILES")))
26 : {
27 : struct stat statp;
28 : snprintf(path, sizeof(path), "%s/Burp/burp.conf", pfenv);
29 : if(!lstat(path, &statp)
30 : && !S_ISDIR(statp.st_mode))
31 : return path;
32 : }
33 : snprintf(path, sizeof(path), "C:/Program Files/Burp/burp.conf");
34 : #else
35 : snprintf(path, sizeof(path), "%s", SYSCONFDIR "/burp.conf");
36 : #endif
37 : return path;
38 : }
39 :
40 0 : static void usage_server(void)
41 : {
42 : #ifndef HAVE_WIN32
43 : printf("\nThe configuration file specifies whether burp runs in server or client mode.\n");
44 0 : printf("\nServer usage: %s [options]\n", progname());
45 : printf("\n");
46 : printf(" Options:\n");
47 : printf(" -a c Run as a stand-alone champion chooser.\n");
48 0 : printf(" -c <path> Path to conf file (default: %s).\n", get_conf_path());
49 : printf(" -F Stay in the foreground.\n");
50 : printf(" -g Generate initial CA certificates and exit.\n");
51 : printf(" -h|-? Print this text and exit.\n");
52 : printf(" -i Print index of symbols and exit.\n");
53 : printf(" -n Do not fork any children (implies '-F').\n");
54 : printf(" -Q Do not log to stdout (overrides config file)\n");
55 : printf(" -t Dry-run to test config file syntax.\n");
56 : printf(" -v Print version and exit.\n");
57 : printf("Options to use with '-a c':\n");
58 : printf(" -C <client> Run as if forked via a connection from this client.\n");
59 : printf("\n");
60 : #endif
61 0 : }
62 :
63 0 : static void usage_client(void)
64 : {
65 0 : printf("\nClient usage: %s [options]\n", progname());
66 : printf("\n");
67 : printf(" Options:\n");
68 : printf(" -a <action> The action can be one of the following.\n");
69 : printf(" b: backup\n");
70 : printf(" delete: delete\n");
71 : printf(" d: diff\n");
72 : printf(" e: estimate\n");
73 : printf(" l: list (this is the default when an action is not given)\n");
74 : printf(" L: long list\n");
75 : printf(" m: monitor interface\n");
76 : printf(" r: restore\n");
77 : #ifndef HAVE_WIN32
78 : printf(" s: status monitor (ncurses)\n");
79 : printf(" S: status monitor snapshot\n");
80 : #endif
81 : printf(" t: timed backup\n");
82 : printf(" T: check backup timer, but do not actually backup\n");
83 : printf(" v: verify\n");
84 : printf(" -b <number> Backup number (default: the most recent backup).\n");
85 0 : printf(" -c <path> Path to conf file (default: %s).\n", get_conf_path());
86 : printf(" -d <directory> Directory to restore to, or directory to list.\n");
87 : printf(" -f Allow overwrite during restore.\n");
88 : printf(" -h|-? Print this text and exit.\n");
89 : printf(" -i Print index of symbols and exit.\n");
90 : printf(" -q <max secs> Randomised delay of starting a timed backup.\n");
91 : printf(" -Q Do not log to stdout (overrides config file)\n");
92 : printf(" -r <regex> Specify a regular expression.\n");
93 : printf(" -s <number> Number of leading path components to strip during restore.\n");
94 : printf(" -t Dry-run to test config file syntax.\n");
95 : printf(" -v Print version and exit.\n");
96 : #ifndef HAVE_WIN32
97 : printf(" -x Do not use the Windows VSS API when restoring.\n");
98 : printf("Options to use with '-a S':\n");
99 : printf(" -C <client> Show a particular client.\n");
100 : printf(" -b <number> Show listable files in a particular backup (requires -C).\n");
101 : printf(" -d <path> Show a particular path in a backup (requires -C and -b).\n");
102 : printf(" -l <path> Log file for the status monitor.\n");
103 : printf(" -z <file> Dump a particular log file in a backup (requires -C and -b).\n");
104 : #endif
105 : printf("\n");
106 : #ifndef HAVE_WIN32
107 : printf(" See http://burp.grke.net/ or the man page ('man burp') for usage examples\n");
108 : printf(" and additional configuration options.\n\n");
109 : #else
110 : printf(" See http://burp.grke.net/ for usage examples and additional configuration\n");
111 : printf(" options.\n\n");
112 : #endif
113 0 : }
114 :
115 0 : int reload(struct conf **confs, const char *conffile, bool firsttime)
116 : {
117 0 : if(!firsttime) logp("Reloading config\n");
118 :
119 0 : if(confs_init(confs)) return -1;
120 :
121 0 : if(conf_load_global_only(conffile, confs)) return -1;
122 :
123 0 : umask(get_mode_t(confs[OPT_UMASK]));
124 :
125 : // This will turn on syslogging which could not be turned on before
126 : // conf_load.
127 0 : log_fzp_set(NULL, confs);
128 :
129 : #ifndef HAVE_WIN32
130 0 : if(get_e_burp_mode(confs[OPT_BURP_MODE])==BURP_MODE_SERVER)
131 0 : setup_signals();
132 : #endif
133 :
134 : // Do not try to change user or group after the first time.
135 0 : if(firsttime && chuser_and_or_chgrp(
136 0 : get_string(confs[OPT_USER]), get_string(confs[OPT_GROUP])))
137 : return -1;
138 :
139 : return 0;
140 : }
141 :
142 : static int replace_conf_str(struct conf *conf, const char *newval)
143 : {
144 0 : if(!newval) return 0;
145 0 : return set_string(conf, newval);
146 : }
147 :
148 : static void usage(void)
149 : {
150 0 : usage_server();
151 0 : usage_client();
152 : }
153 :
154 0 : static int parse_action(enum action *act, const char *optarg)
155 : {
156 0 : if(!strncmp(optarg, "backup", 1))
157 0 : *act=ACTION_BACKUP;
158 0 : else if(!strncmp(optarg, "timedbackup", 1))
159 0 : *act=ACTION_BACKUP_TIMED;
160 0 : else if(!strncmp(optarg, "Timercheck", 1))
161 0 : *act=ACTION_TIMER_CHECK;
162 0 : else if(!strncmp(optarg, "restore", 1))
163 0 : *act=ACTION_RESTORE;
164 0 : else if(!strncmp(optarg, "verify", 1))
165 0 : *act=ACTION_VERIFY;
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, "status", 1))
171 0 : *act=ACTION_STATUS;
172 0 : else if(!strncmp(optarg, "Status", 1))
173 0 : *act=ACTION_STATUS_SNAPSHOT;
174 0 : else if(!strncmp(optarg, "estimate", 1))
175 0 : *act=ACTION_ESTIMATE;
176 : // Make them spell 'delete' out fully so that it is less likely to be
177 : // used accidently.
178 0 : else if(!strncmp_w(optarg, "delete"))
179 0 : *act=ACTION_DELETE;
180 0 : else if(!strncmp(optarg, "champchooser", 1))
181 0 : *act=ACTION_CHAMP_CHOOSER;
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 : #ifndef HAVE_WIN32
197 0 : static int run_champ_chooser(struct conf **confs)
198 : {
199 0 : const char *orig_client=get_string(confs[OPT_ORIG_CLIENT]);
200 0 : if(orig_client && *orig_client)
201 0 : return champ_chooser_server_standalone(confs);
202 0 : logp("No client name given for standalone champion chooser process.\n");
203 0 : logp("Try using the '-C' option.\n");
204 0 : return 1;
205 : }
206 :
207 0 : static int server_modes(enum action act,
208 : const char *conffile, struct lock *lock, int generate_ca_only,
209 : struct conf **confs)
210 : {
211 0 : switch(act)
212 : {
213 : case ACTION_CHAMP_CHOOSER:
214 : // We are running on the server machine, wanting to
215 : // be a standalone champion chooser process.
216 0 : return run_champ_chooser(confs);
217 : default:
218 0 : return server(confs, conffile, lock, generate_ca_only);
219 : }
220 : }
221 : #endif
222 :
223 0 : static void random_delay(struct conf **confs)
224 : {
225 : int delay;
226 0 : int randomise=get_int(confs[OPT_RANDOMISE]);
227 0 : if(!randomise) return;
228 0 : srand(getpid());
229 0 : delay=rand()%randomise;
230 0 : logp("Sleeping %d seconds\n", delay);
231 0 : sleep(delay);
232 : }
233 :
234 0 : static int run_test_confs(struct conf **confs, const char *client)
235 : {
236 0 : int ret=-1;
237 0 : struct conf **cconfs=NULL;
238 0 : if(!client)
239 : {
240 0 : confs_dump(confs, 0);
241 0 : ret=0;
242 0 : goto end;
243 : }
244 0 : if(!(cconfs=confs_alloc()))
245 : goto end;
246 0 : confs_init(cconfs);
247 0 : if(set_string(cconfs[OPT_CNAME], client)
248 0 : || set_string(cconfs[OPT_PEER_VERSION], VERSION)
249 0 : || conf_load_clientconfdir(confs, cconfs))
250 : goto end;
251 0 : confs_dump(cconfs, CONF_FLAG_CC_OVERRIDE|CONF_FLAG_INCEXC);
252 :
253 : end:
254 0 : confs_free(&cconfs);
255 0 : return ret;
256 : }
257 :
258 : #if defined(HAVE_WIN32)
259 : #define main BurpMain
260 : #endif
261 : #ifndef UTEST
262 : static
263 : #endif
264 0 : int real_main(int argc, char *argv[])
265 : {
266 0 : int ret=1;
267 0 : int option=0;
268 0 : int daemon=1;
269 0 : int forking=1;
270 0 : int strip=0;
271 0 : int randomise=0;
272 0 : struct lock *lock=NULL;
273 0 : struct conf **confs=NULL;
274 0 : int forceoverwrite=0;
275 0 : enum action act=ACTION_LIST;
276 0 : const char *backup=NULL;
277 0 : const char *backup2=NULL;
278 0 : char *restoreprefix=NULL;
279 0 : char *stripfrompath=NULL;
280 0 : const char *regex=NULL;
281 0 : const char *browsefile=NULL;
282 0 : char *browsedir=NULL;
283 0 : const char *conffile=get_conf_path();
284 0 : const char *orig_client=NULL;
285 0 : const char *logfile=NULL;
286 : // The orig_client is the original client that the normal client
287 : // would like to restore from.
288 : #ifndef HAVE_WIN32
289 0 : int generate_ca_only=0;
290 : #endif
291 0 : int vss_restore=1;
292 0 : int test_confs=0;
293 : enum burp_mode mode;
294 :
295 0 : log_init(argv[0]);
296 : #ifndef HAVE_WIN32
297 0 : if(!strcmp(prog, "bedup"))
298 0 : return run_bedup(argc, argv);
299 0 : if(!strcmp(prog, "bsigs"))
300 0 : return run_bsigs(argc, argv);
301 : #endif
302 :
303 0 : while((option=getopt(argc, argv, "a:b:c:C:d:fFghil:nq:Qr:s:tvxjz:?"))!=-1)
304 : {
305 0 : switch(option)
306 : {
307 : case 'a':
308 0 : if(parse_action(&act, optarg)) goto end;
309 : break;
310 : case 'b':
311 : // The diff command may have two backups
312 : // specified.
313 0 : if(!backup2 && backup) backup2=optarg;
314 0 : if(!backup) backup=optarg;
315 : break;
316 : case 'c':
317 0 : conffile=optarg;
318 0 : break;
319 : case 'C':
320 0 : orig_client=optarg;
321 0 : break;
322 : case 'd':
323 0 : restoreprefix=optarg; // for restores
324 0 : browsedir=optarg; // for lists
325 0 : break;
326 : case 'f':
327 : forceoverwrite=1;
328 : break;
329 : case 'F':
330 0 : daemon=0;
331 0 : break;
332 : case 'g':
333 : #ifndef HAVE_WIN32
334 0 : generate_ca_only=1;
335 : #endif
336 0 : break;
337 : case 'i':
338 0 : cmd_print_all();
339 0 : ret=0;
340 0 : goto end;
341 : case 'l':
342 0 : logfile=optarg;
343 0 : break;
344 : case 'n':
345 0 : forking=0;
346 0 : break;
347 : case 'q':
348 0 : randomise=atoi(optarg);
349 0 : break;
350 : case 'Q':
351 0 : log_force_quiet();
352 0 : break;
353 : case 'r':
354 0 : regex=optarg;
355 0 : break;
356 : case 's':
357 0 : strip=atoi(optarg);
358 0 : break;
359 : case 'v':
360 0 : printf("%s-%s\n", progname(), VERSION);
361 0 : ret=0;
362 0 : goto end;
363 : case 'x':
364 0 : vss_restore=0;
365 0 : break;
366 : case 't':
367 0 : test_confs=1;
368 0 : break;
369 : case 'z':
370 0 : browsefile=optarg;
371 0 : break;
372 : case 'h':
373 : case '?':
374 : default:
375 : usage();
376 : goto end;
377 : }
378 : }
379 0 : if(optind<argc)
380 : {
381 : usage();
382 : goto end;
383 : }
384 :
385 0 : if(act==ACTION_MONITOR)
386 : {
387 : // Try to output everything in JSON.
388 0 : log_set_json(1);
389 : #ifndef HAVE_WIN32
390 : // Need to do this so that processes reading stdout get the
391 : // result of the printfs of logp straight away.
392 0 : setlinebuf(stdout);
393 : #endif
394 : }
395 :
396 0 : if(!(confs=confs_alloc()))
397 : goto end;
398 :
399 0 : if(reload(confs, conffile, 1))
400 : goto end;
401 :
402 : // Dry run to test config file syntax.
403 0 : if(test_confs)
404 : {
405 0 : ret=run_test_confs(confs, orig_client);
406 0 : goto end;
407 : }
408 :
409 0 : if(!backup) switch(act)
410 : {
411 : case ACTION_DELETE:
412 0 : logp("No backup specified for deletion.\n");
413 0 : goto end;
414 : case ACTION_RESTORE:
415 : case ACTION_VERIFY:
416 : case ACTION_DIFF:
417 : case ACTION_DIFF_LONG:
418 0 : logp("No backup specified. Using the most recent.\n");
419 0 : backup="0";
420 : default:
421 : break;
422 : }
423 0 : if(!backup2) switch(act)
424 : {
425 : case ACTION_DIFF:
426 : case ACTION_DIFF_LONG:
427 0 : logp("No second backup specified. Using file system scan.\n");
428 0 : backup2="n"; // For 'next'.
429 : default:
430 : break;
431 : }
432 :
433 : // The logfile option is only used for the status client stuff.
434 0 : if(logfile
435 0 : && (act!=ACTION_STATUS
436 0 : && act!=ACTION_STATUS_SNAPSHOT))
437 0 : logp("-l <logfile> option obsoleted\n");
438 :
439 0 : if(orig_client
440 0 : && *orig_client
441 0 : && set_string(confs[OPT_ORIG_CLIENT], orig_client))
442 : goto end;
443 :
444 : // The random delay needs to happen before the lock is got, otherwise
445 : // you would never be able to use burp by hand.
446 0 : if(randomise) set_int(confs[OPT_RANDOMISE], randomise);
447 0 : mode=get_e_burp_mode(confs[OPT_BURP_MODE]);
448 0 : if(mode==BURP_MODE_CLIENT
449 0 : && (act==ACTION_BACKUP_TIMED || act==ACTION_TIMER_CHECK))
450 0 : random_delay(confs);
451 :
452 0 : if(mode==BURP_MODE_SERVER
453 0 : && act==ACTION_CHAMP_CHOOSER)
454 : {
455 : // These server modes need to run without getting the lock.
456 : }
457 0 : else if(mode==BURP_MODE_CLIENT
458 0 : && (act==ACTION_LIST
459 : || act==ACTION_LIST_LONG
460 0 : || act==ACTION_DIFF
461 0 : || act==ACTION_DIFF_LONG
462 0 : || act==ACTION_STATUS
463 0 : || act==ACTION_STATUS_SNAPSHOT
464 0 : || act==ACTION_MONITOR))
465 : {
466 : // These client modes need to run without getting the lock.
467 : }
468 : else
469 : {
470 0 : const char *lockfile=confs_get_lockfile(confs);
471 0 : if(!(lock=lock_alloc_and_init(lockfile)))
472 : goto end;
473 0 : lock_get(lock);
474 0 : switch(lock->status)
475 : {
476 : case GET_LOCK_GOT: break;
477 : case GET_LOCK_NOT_GOT:
478 0 : logp("Could not get lockfile.\n");
479 0 : logp("Another process is probably running,\n");
480 0 : goto end;
481 : case GET_LOCK_ERROR:
482 : default:
483 0 : logp("Could not get lockfile.\n");
484 0 : logp("Maybe you do not have permissions to write to %s.\n", lockfile);
485 0 : goto end;
486 : }
487 : }
488 :
489 0 : set_int(confs[OPT_OVERWRITE], forceoverwrite);
490 0 : set_int(confs[OPT_STRIP], strip);
491 0 : set_int(confs[OPT_FORK], forking);
492 0 : set_int(confs[OPT_DAEMON], daemon);
493 :
494 0 : strip_trailing_slashes(&restoreprefix);
495 0 : strip_trailing_slashes(&browsedir);
496 0 : if(replace_conf_str(confs[OPT_BACKUP], backup)
497 0 : || replace_conf_str(confs[OPT_BACKUP2], backup2)
498 0 : || replace_conf_str(confs[OPT_RESTOREPREFIX], restoreprefix)
499 0 : || replace_conf_str(confs[OPT_STRIP_FROM_PATH], stripfrompath)
500 0 : || replace_conf_str(confs[OPT_REGEX], regex)
501 0 : || replace_conf_str(confs[OPT_BROWSEFILE], browsefile)
502 0 : || replace_conf_str(confs[OPT_BROWSEDIR], browsedir)
503 0 : || replace_conf_str(confs[OPT_MONITOR_LOGFILE], logfile))
504 : goto end;
505 :
506 0 : base64_init();
507 0 : hexmap_init();
508 :
509 0 : if(mode==BURP_MODE_SERVER)
510 : {
511 : #ifdef HAVE_WIN32
512 : logp("Sorry, server mode is not implemented for Windows.\n");
513 : #else
514 0 : ret=server_modes(act,
515 : conffile, lock, generate_ca_only, confs);
516 : #endif
517 : }
518 : else
519 : {
520 0 : ret=client(confs, act, vss_restore);
521 : }
522 :
523 : end:
524 0 : lock_release(lock);
525 0 : lock_free(&lock);
526 0 : confs_free(&confs);
527 0 : return ret;
528 : }
529 :
530 : #ifndef UTEST
531 : int main(int argc, char *argv[])
532 : {
533 : return real_main(argc, argv);
534 : }
535 : #endif
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