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(" -d <path> a single client in the status monitor.\n");
50 : printf(" -F Stay in the foreground.\n");
51 : printf(" -g Generate initial CA certificates and exit.\n");
52 : printf(" -h|-? Print this text and exit.\n");
53 : printf(" -i Print index of symbols and exit.\n");
54 : printf(" -l <path> Log file for the status monitor.\n");
55 : printf(" -n Do not fork any children (implies '-F').\n");
56 : printf(" -t Dry-run to test config file syntax.\n");
57 : printf(" -v Print version and exit.\n");
58 : printf("Options to use with '-a c':\n");
59 : printf(" -C <client> Run as if forked via a connection from this client.\n");
60 : printf("\n");
61 : #endif
62 0 : }
63 :
64 0 : static void usage_client(void)
65 : {
66 0 : printf("\nClient usage: %s [options]\n", progname());
67 : printf("\n");
68 : printf(" Options:\n");
69 : printf(" -a <action> The action can be one of the following.\n");
70 : printf(" b: backup\n");
71 : printf(" delete: delete\n");
72 : printf(" d: diff\n");
73 : printf(" e: estimate\n");
74 : printf(" l: list (this is the default when an action is not given)\n");
75 : printf(" L: long list\n");
76 : printf(" m: monitor interface\n");
77 : printf(" r: restore\n");
78 : #ifndef HAVE_WIN32
79 : printf(" s: status monitor (ncurses)\n");
80 : printf(" S: status monitor snapshot\n");
81 : #endif
82 : printf(" t: timed backup\n");
83 : printf(" T: check backup timer, but do not actually backup\n");
84 : printf(" v: verify\n");
85 : printf(" -b <number> Backup number (default: the most recent backup).\n");
86 0 : printf(" -c <path> Path to conf file (default: %s).\n", get_conf_path());
87 : printf(" -d <directory> Directory to restore to, or directory to list.\n");
88 : printf(" -f Allow overwrite during restore.\n");
89 : printf(" -h|-? Print this text and exit.\n");
90 : printf(" -i Print index of symbols and exit.\n");
91 : printf(" -q <max secs> Randomised delay of starting a timed backup.\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(" -z <file> Dump a particular log file in a backup (requires -C and -b).\n");
102 : printf(" -d <path> Show a particular path in a backup (requires -C and -b).\n");
103 : #endif
104 : printf("\n");
105 : #ifndef HAVE_WIN32
106 : printf(" See http://burp.grke.net/ or the man page ('man burp') for usage examples\n");
107 : printf(" and additional configuration options.\n\n");
108 : #else
109 : printf(" See http://burp.grke.net/ for usage examples and additional configuration\n");
110 : printf(" options.\n\n");
111 : #endif
112 0 : }
113 :
114 0 : int reload(struct conf **confs, const char *conffile, bool firsttime)
115 : {
116 0 : if(!firsttime) logp("Reloading config\n");
117 :
118 0 : if(confs_init(confs)) return -1;
119 :
120 0 : if(conf_load_global_only(conffile, confs)) return -1;
121 :
122 0 : umask(get_mode_t(confs[OPT_UMASK]));
123 :
124 : // This will turn on syslogging which could not be turned on before
125 : // conf_load.
126 0 : log_fzp_set(NULL, confs);
127 :
128 : #ifndef HAVE_WIN32
129 0 : if(get_e_burp_mode(confs[OPT_BURP_MODE])==BURP_MODE_SERVER)
130 0 : setup_signals();
131 : #endif
132 :
133 : // Do not try to change user or group after the first time.
134 0 : if(firsttime && chuser_and_or_chgrp(
135 0 : get_string(confs[OPT_USER]), get_string(confs[OPT_GROUP])))
136 : return -1;
137 :
138 : return 0;
139 : }
140 :
141 : static int replace_conf_str(struct conf *conf, const char *newval)
142 : {
143 0 : if(!newval) return 0;
144 0 : return set_string(conf, newval);
145 : }
146 :
147 : static void usage(void)
148 : {
149 0 : usage_server();
150 0 : usage_client();
151 : }
152 :
153 0 : static int parse_action(enum action *act, const char *optarg)
154 : {
155 0 : if(!strncmp(optarg, "backup", 1))
156 0 : *act=ACTION_BACKUP;
157 0 : else if(!strncmp(optarg, "timedbackup", 1))
158 0 : *act=ACTION_BACKUP_TIMED;
159 0 : else if(!strncmp(optarg, "Timercheck", 1))
160 0 : *act=ACTION_TIMER_CHECK;
161 0 : else if(!strncmp(optarg, "restore", 1))
162 0 : *act=ACTION_RESTORE;
163 0 : else if(!strncmp(optarg, "verify", 1))
164 0 : *act=ACTION_VERIFY;
165 0 : else if(!strncmp(optarg, "list", 1))
166 0 : *act=ACTION_LIST;
167 0 : else if(!strncmp(optarg, "List", 1))
168 0 : *act=ACTION_LIST_LONG;
169 0 : else if(!strncmp(optarg, "status", 1))
170 0 : *act=ACTION_STATUS;
171 0 : else if(!strncmp(optarg, "Status", 1))
172 0 : *act=ACTION_STATUS_SNAPSHOT;
173 0 : else if(!strncmp(optarg, "estimate", 1))
174 0 : *act=ACTION_ESTIMATE;
175 : // Make them spell 'delete' out fully so that it is less likely to be
176 : // used accidently.
177 0 : else if(!strncmp_w(optarg, "delete"))
178 0 : *act=ACTION_DELETE;
179 0 : else if(!strncmp(optarg, "champchooser", 1))
180 0 : *act=ACTION_CHAMP_CHOOSER;
181 0 : else if(!strncmp(optarg, "diff", 1))
182 0 : *act=ACTION_DIFF;
183 0 : else if(!strncmp(optarg, "Diff", 1))
184 0 : *act=ACTION_DIFF_LONG;
185 0 : else if(!strncmp(optarg, "monitor", 1))
186 0 : *act=ACTION_MONITOR;
187 : else
188 : {
189 : usage();
190 0 : return -1;
191 : }
192 : return 0;
193 : }
194 :
195 : #ifndef HAVE_WIN32
196 0 : static int run_champ_chooser(struct conf **confs)
197 : {
198 0 : const char *orig_client=get_string(confs[OPT_ORIG_CLIENT]);
199 0 : if(orig_client && *orig_client)
200 0 : return champ_chooser_server_standalone(confs);
201 0 : logp("No client name given for standalone champion chooser process.\n");
202 0 : logp("Try using the '-C' option.\n");
203 0 : return 1;
204 : }
205 :
206 0 : static int server_modes(enum action act,
207 : const char *conffile, struct lock *lock, int generate_ca_only,
208 : struct conf **confs)
209 : {
210 0 : switch(act)
211 : {
212 : case ACTION_CHAMP_CHOOSER:
213 : // We are running on the server machine, wanting to
214 : // be a standalone champion chooser process.
215 0 : return run_champ_chooser(confs);
216 : default:
217 0 : return server(confs, conffile, lock, generate_ca_only);
218 : }
219 : }
220 : #endif
221 :
222 0 : static void random_delay(struct conf **confs)
223 : {
224 : int delay;
225 0 : int randomise=get_int(confs[OPT_RANDOMISE]);
226 0 : if(!randomise) return;
227 0 : srand(getpid());
228 0 : delay=rand()%randomise;
229 0 : logp("Sleeping %d seconds\n", delay);
230 0 : sleep(delay);
231 : }
232 :
233 0 : static int run_test_confs(struct conf **confs, const char *client)
234 : {
235 0 : int ret=-1;
236 0 : struct conf **cconfs=NULL;
237 0 : if(!client)
238 : {
239 0 : confs_dump(confs, 0);
240 0 : ret=0;
241 0 : goto end;
242 : }
243 0 : if(!(cconfs=confs_alloc()))
244 : goto end;
245 0 : confs_init(cconfs);
246 0 : if(set_string(cconfs[OPT_CNAME], client)
247 0 : || set_string(cconfs[OPT_PEER_VERSION], VERSION)
248 0 : || conf_load_clientconfdir(confs, cconfs))
249 : goto end;
250 0 : confs_dump(cconfs, CONF_FLAG_CC_OVERRIDE|CONF_FLAG_INCEXC);
251 :
252 : end:
253 0 : confs_free(&cconfs);
254 0 : return ret;
255 : }
256 :
257 : #if defined(HAVE_WIN32)
258 : #define main BurpMain
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 : const char *regex=NULL;
279 0 : const char *browsefile=NULL;
280 0 : char *browsedir=NULL;
281 0 : const char *conffile=get_conf_path();
282 0 : const char *orig_client=NULL;
283 0 : const char *logfile=NULL;
284 : // The orig_client is the original client that the normal client
285 : // would like to restore from.
286 : #ifndef HAVE_WIN32
287 0 : int generate_ca_only=0;
288 : #endif
289 0 : int vss_restore=1;
290 0 : int test_confs=0;
291 : enum burp_mode mode;
292 :
293 0 : log_init(argv[0]);
294 : #ifndef HAVE_WIN32
295 0 : if(!strcmp(prog, "bedup"))
296 0 : return run_bedup(argc, argv);
297 0 : if(!strcmp(prog, "bsigs"))
298 0 : return run_bsigs(argc, argv);
299 : #endif
300 :
301 0 : while((option=getopt(argc, argv, "a:b:c:C:d:fFghil:nq:r:s:tvxjz:?"))!=-1)
302 : {
303 0 : switch(option)
304 : {
305 : case 'a':
306 0 : if(parse_action(&act, optarg)) goto end;
307 : break;
308 : case 'b':
309 : // The diff command may have two backups
310 : // specified.
311 0 : if(!backup2 && backup) backup2=optarg;
312 0 : if(!backup) backup=optarg;
313 : break;
314 : case 'c':
315 0 : conffile=optarg;
316 0 : break;
317 : case 'C':
318 0 : orig_client=optarg;
319 0 : break;
320 : case 'd':
321 0 : restoreprefix=optarg; // for restores
322 0 : browsedir=optarg; // for lists
323 0 : break;
324 : case 'f':
325 : forceoverwrite=1;
326 : break;
327 : case 'F':
328 0 : daemon=0;
329 0 : break;
330 : case 'g':
331 : #ifndef HAVE_WIN32
332 0 : generate_ca_only=1;
333 : #endif
334 0 : break;
335 : case 'i':
336 0 : cmd_print_all();
337 0 : ret=0;
338 0 : goto end;
339 : case 'l':
340 0 : logfile=optarg;
341 0 : break;
342 : case 'n':
343 0 : forking=0;
344 0 : break;
345 : case 'q':
346 0 : randomise=atoi(optarg);
347 0 : break;
348 : case 'r':
349 0 : regex=optarg;
350 0 : break;
351 : case 's':
352 0 : strip=atoi(optarg);
353 0 : break;
354 : case 'v':
355 0 : printf("%s-%s\n", progname(), VERSION);
356 0 : ret=0;
357 0 : goto end;
358 : case 'x':
359 0 : vss_restore=0;
360 0 : break;
361 : case 't':
362 0 : test_confs=1;
363 0 : break;
364 : case 'z':
365 0 : browsefile=optarg;
366 0 : break;
367 : case 'h':
368 : case '?':
369 : default:
370 : usage();
371 : goto end;
372 : }
373 : }
374 0 : if(optind<argc)
375 : {
376 : usage();
377 : goto end;
378 : }
379 :
380 0 : if(act==ACTION_MONITOR)
381 : {
382 : // Try to output everything in JSON.
383 0 : log_set_json(1);
384 : #ifndef HAVE_WIN32
385 : // Need to do this so that processes reading stdout get the
386 : // result of the printfs of logp straight away.
387 0 : setlinebuf(stdout);
388 : #endif
389 : }
390 :
391 0 : if(!(confs=confs_alloc()))
392 : goto end;
393 :
394 0 : if(reload(confs, conffile, 1))
395 : goto end;
396 :
397 : // Dry run to test config file syntax.
398 0 : if(test_confs)
399 : {
400 0 : ret=run_test_confs(confs, orig_client);
401 0 : goto end;
402 : }
403 :
404 0 : if(!backup) switch(act)
405 : {
406 : case ACTION_DELETE:
407 0 : logp("No backup specified for deletion.\n");
408 0 : goto end;
409 : case ACTION_RESTORE:
410 : case ACTION_VERIFY:
411 : case ACTION_DIFF:
412 : case ACTION_DIFF_LONG:
413 0 : logp("No backup specified. Using the most recent.\n");
414 0 : backup="0";
415 : default:
416 : break;
417 : }
418 0 : if(!backup2) switch(act)
419 : {
420 : case ACTION_DIFF:
421 : case ACTION_DIFF_LONG:
422 0 : logp("No second backup specified. Using file system scan.\n");
423 0 : backup2="n"; // For 'next'.
424 : default:
425 : break;
426 : }
427 :
428 : // The logfile option is only used for the status client stuff.
429 0 : if(logfile
430 0 : && (act!=ACTION_STATUS
431 0 : && act!=ACTION_STATUS_SNAPSHOT))
432 0 : logp("-l <logfile> option obsoleted\n");
433 :
434 0 : if(orig_client
435 0 : && *orig_client
436 0 : && set_string(confs[OPT_ORIG_CLIENT], orig_client))
437 : goto end;
438 :
439 : // The random delay needs to happen before the lock is got, otherwise
440 : // you would never be able to use burp by hand.
441 0 : if(randomise) set_int(confs[OPT_RANDOMISE], randomise);
442 0 : mode=get_e_burp_mode(confs[OPT_BURP_MODE]);
443 0 : if(mode==BURP_MODE_CLIENT
444 0 : && (act==ACTION_BACKUP_TIMED || act==ACTION_TIMER_CHECK))
445 0 : random_delay(confs);
446 :
447 0 : if(mode==BURP_MODE_SERVER
448 0 : && act==ACTION_CHAMP_CHOOSER)
449 : {
450 : // These server modes need to run without getting the lock.
451 : }
452 0 : else if(mode==BURP_MODE_CLIENT
453 0 : && (act==ACTION_LIST
454 : || act==ACTION_LIST_LONG
455 0 : || act==ACTION_DIFF
456 0 : || act==ACTION_DIFF_LONG
457 0 : || act==ACTION_STATUS
458 0 : || act==ACTION_STATUS_SNAPSHOT
459 0 : || act==ACTION_MONITOR))
460 : {
461 : // These client modes need to run without getting the lock.
462 : }
463 : else
464 : {
465 0 : const char *lockfile=confs_get_lockfile(confs);
466 0 : if(!(lock=lock_alloc_and_init(lockfile)))
467 : goto end;
468 0 : lock_get(lock);
469 0 : switch(lock->status)
470 : {
471 : case GET_LOCK_GOT: break;
472 : case GET_LOCK_NOT_GOT:
473 0 : logp("Could not get lockfile.\n");
474 0 : logp("Another process is probably running,\n");
475 0 : goto end;
476 : case GET_LOCK_ERROR:
477 : default:
478 0 : logp("Could not get lockfile.\n");
479 0 : logp("Maybe you do not have permissions to write to %s.\n", lockfile);
480 0 : goto end;
481 : }
482 : }
483 :
484 0 : set_int(confs[OPT_OVERWRITE], forceoverwrite);
485 0 : set_int(confs[OPT_STRIP], strip);
486 0 : set_int(confs[OPT_FORK], forking);
487 0 : set_int(confs[OPT_DAEMON], daemon);
488 :
489 0 : strip_trailing_slashes(&restoreprefix);
490 0 : strip_trailing_slashes(&browsedir);
491 0 : if(replace_conf_str(confs[OPT_BACKUP], backup)
492 0 : || replace_conf_str(confs[OPT_BACKUP2], backup2)
493 0 : || replace_conf_str(confs[OPT_RESTOREPREFIX], restoreprefix)
494 0 : || replace_conf_str(confs[OPT_REGEX], regex)
495 0 : || replace_conf_str(confs[OPT_BROWSEFILE], browsefile)
496 0 : || replace_conf_str(confs[OPT_BROWSEDIR], browsedir)
497 0 : || replace_conf_str(confs[OPT_MONITOR_LOGFILE], logfile))
498 : goto end;
499 :
500 0 : base64_init();
501 0 : hexmap_init();
502 :
503 0 : if(mode==BURP_MODE_SERVER)
504 : {
505 : #ifdef HAVE_WIN32
506 : logp("Sorry, server mode is not implemented for Windows.\n");
507 : #else
508 0 : ret=server_modes(act,
509 : conffile, lock, generate_ca_only, confs);
510 : #endif
511 : }
512 : else
513 : {
514 0 : ret=client(confs, act, vss_restore);
515 : }
516 :
517 : end:
518 0 : lock_release(lock);
519 0 : lock_free(&lock);
520 0 : confs_free(&confs);
521 0 : return ret;
522 : }
523 :
524 : #ifndef UTEST
525 : int main(int argc, char *argv[])
526 : {
527 : return real_main(argc, argv);
528 : }
529 : #endif
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