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 : int oldmax_children, int oldmax_status_children)
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 : setup_signals(oldmax_children, get_int(confs[OPT_MAX_CHILDREN]),
132 : oldmax_status_children,
133 0 : get_int(confs[OPT_MAX_STATUS_CHILDREN]));
134 : #endif
135 :
136 : // Do not try to change user or group after the first time.
137 0 : if(firsttime && chuser_and_or_chgrp(
138 0 : get_string(confs[OPT_USER]), get_string(confs[OPT_GROUP])))
139 : return -1;
140 :
141 0 : return 0;
142 : }
143 :
144 : static int replace_conf_str(struct conf *conf, const char *newval)
145 : {
146 0 : if(!newval) return 0;
147 0 : return set_string(conf, newval);
148 : }
149 :
150 : static void usage(void)
151 : {
152 0 : usage_server();
153 0 : usage_client();
154 : }
155 :
156 0 : static int parse_action(enum action *act, const char *optarg)
157 : {
158 0 : if(!strncmp(optarg, "backup", 1))
159 0 : *act=ACTION_BACKUP;
160 0 : else if(!strncmp(optarg, "timedbackup", 1))
161 0 : *act=ACTION_BACKUP_TIMED;
162 0 : else if(!strncmp(optarg, "Timercheck", 1))
163 0 : *act=ACTION_TIMER_CHECK;
164 0 : else if(!strncmp(optarg, "restore", 1))
165 0 : *act=ACTION_RESTORE;
166 0 : else if(!strncmp(optarg, "verify", 1))
167 0 : *act=ACTION_VERIFY;
168 0 : else if(!strncmp(optarg, "list", 1))
169 0 : *act=ACTION_LIST;
170 0 : else if(!strncmp(optarg, "List", 1))
171 0 : *act=ACTION_LIST_LONG;
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, "champchooser", 1))
183 0 : *act=ACTION_CHAMP_CHOOSER;
184 0 : else if(!strncmp(optarg, "diff", 1))
185 0 : *act=ACTION_DIFF;
186 0 : else if(!strncmp(optarg, "Diff", 1))
187 0 : *act=ACTION_DIFF_LONG;
188 0 : else if(!strncmp(optarg, "monitor", 1))
189 0 : *act=ACTION_MONITOR;
190 : else
191 : {
192 : usage();
193 0 : return -1;
194 : }
195 : return 0;
196 : }
197 :
198 : #ifndef HAVE_WIN32
199 0 : static int run_champ_chooser(struct conf **confs)
200 : {
201 0 : const char *orig_client=get_string(confs[OPT_ORIG_CLIENT]);
202 0 : if(orig_client && *orig_client)
203 0 : return champ_chooser_server_standalone(confs);
204 0 : logp("No client name given for standalone champion chooser process.\n");
205 0 : logp("Try using the '-C' option.\n");
206 0 : return 1;
207 : }
208 :
209 0 : static int server_modes(enum action act,
210 : const char *conffile, struct lock *lock, int generate_ca_only,
211 : struct conf **confs)
212 : {
213 0 : switch(act)
214 : {
215 : case ACTION_CHAMP_CHOOSER:
216 : // We are running on the server machine, wanting to
217 : // be a standalone champion chooser process.
218 0 : return run_champ_chooser(confs);
219 : default:
220 0 : return server(confs, conffile, lock, generate_ca_only);
221 : }
222 : }
223 : #endif
224 :
225 0 : static void random_delay(struct conf **confs)
226 : {
227 : int delay;
228 0 : int randomise=get_int(confs[OPT_RANDOMISE]);
229 0 : if(!randomise) return;
230 0 : srand(getpid());
231 0 : delay=rand()%randomise;
232 0 : logp("Sleeping %d seconds\n", delay);
233 0 : sleep(delay);
234 : }
235 :
236 0 : static int run_test_confs(struct conf **confs,
237 : const char *client, const char *conffile)
238 : {
239 0 : int ret=-1;
240 0 : struct conf **cconfs=NULL;
241 0 : if(!client)
242 : {
243 0 : confs_dump(confs, 0);
244 0 : ret=0;
245 : goto end;
246 : }
247 0 : if(!(cconfs=confs_alloc()))
248 : goto end;
249 0 : confs_init(cconfs);
250 0 : if(set_string(cconfs[OPT_CNAME], client)
251 0 : || set_string(cconfs[OPT_PEER_VERSION], VERSION)
252 0 : || conf_load_clientconfdir(confs, cconfs))
253 : goto end;
254 0 : confs_dump(cconfs, CONF_FLAG_CC_OVERRIDE|CONF_FLAG_INCEXC);
255 :
256 : end:
257 0 : confs_free(&cconfs);
258 0 : return ret;
259 : }
260 :
261 : #if defined(HAVE_WIN32)
262 : #define main BurpMain
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 : const char *regex=NULL;
280 0 : const char *browsefile=NULL;
281 0 : char *browsedir=NULL;
282 0 : const char *conffile=get_conf_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 : int vss_restore=1;
291 0 : int test_confs=0;
292 : enum burp_mode mode;
293 :
294 0 : log_init(argv[0]);
295 : #ifndef HAVE_WIN32
296 0 : if(!strcmp(prog, "bedup"))
297 0 : return run_bedup(argc, argv);
298 0 : if(!strcmp(prog, "bsigs"))
299 0 : return run_bsigs(argc, argv);
300 : #endif
301 :
302 0 : while((option=getopt(argc, argv, "a:b:c:C:d:fFghil:nq:r:s:tvxjz:?"))!=-1)
303 : {
304 0 : switch(option)
305 : {
306 : case 'a':
307 0 : if(parse_action(&act, optarg)) goto end;
308 : break;
309 : case 'b':
310 : // The diff command may have two backups
311 : // specified.
312 0 : if(!backup2 && backup) backup2=optarg;
313 0 : if(!backup) backup=optarg;
314 : break;
315 : case 'c':
316 0 : conffile=optarg;
317 0 : break;
318 : case 'C':
319 0 : orig_client=optarg;
320 0 : break;
321 : case 'd':
322 0 : restoreprefix=optarg; // for restores
323 0 : browsedir=optarg; // for lists
324 0 : break;
325 : case 'f':
326 : forceoverwrite=1;
327 : break;
328 : case 'F':
329 0 : daemon=0;
330 0 : break;
331 : case 'g':
332 : #ifndef HAVE_WIN32
333 0 : generate_ca_only=1;
334 : #endif
335 0 : break;
336 : case 'i':
337 0 : cmd_print_all();
338 0 : ret=0;
339 0 : goto end;
340 : case 'l':
341 0 : logfile=optarg;
342 0 : break;
343 : case 'n':
344 0 : forking=0;
345 0 : break;
346 : case 'q':
347 0 : randomise=atoi(optarg);
348 0 : break;
349 : case 'r':
350 0 : regex=optarg;
351 0 : break;
352 : case 's':
353 0 : strip=atoi(optarg);
354 0 : break;
355 : case 'v':
356 0 : printf("%s-%s\n", progname(), VERSION);
357 0 : ret=0;
358 0 : goto end;
359 : case 'x':
360 0 : vss_restore=0;
361 0 : break;
362 : case 't':
363 0 : test_confs=1;
364 0 : break;
365 : case 'z':
366 0 : browsefile=optarg;
367 0 : break;
368 : case 'h':
369 : case '?':
370 : default:
371 : usage();
372 : goto end;
373 : }
374 : }
375 0 : if(optind<argc)
376 : {
377 : usage();
378 : goto end;
379 : }
380 :
381 0 : if(act==ACTION_MONITOR)
382 : {
383 : // Try to output everything in JSON.
384 0 : log_set_json(1);
385 : #ifndef HAVE_WIN32
386 : // Need to do this so that processes reading stdout get the
387 : // result of the printfs of logp straight away.
388 0 : setlinebuf(stdout);
389 : #endif
390 : }
391 :
392 0 : if(!(confs=confs_alloc()))
393 : goto end;
394 :
395 0 : if(reload(confs, conffile,
396 : 1 /* first time */,
397 : 0 /* no oldmax_children setting */,
398 0 : 0 /* no oldmax_status_children setting */))
399 : goto end;
400 :
401 : // Dry run to test config file syntax.
402 0 : if(test_confs)
403 : {
404 0 : ret=run_test_confs(confs, orig_client, conffile);
405 0 : goto end;
406 : }
407 :
408 0 : if(!backup) switch(act)
409 : {
410 : case ACTION_DELETE:
411 0 : logp("No backup specified for deletion.\n");
412 0 : goto end;
413 : case ACTION_RESTORE:
414 : case ACTION_VERIFY:
415 : case ACTION_DIFF:
416 : case ACTION_DIFF_LONG:
417 0 : logp("No backup specified. Using the most recent.\n");
418 0 : backup="0";
419 : default:
420 : break;
421 : }
422 0 : if(!backup2) switch(act)
423 : {
424 : case ACTION_DIFF:
425 : case ACTION_DIFF_LONG:
426 0 : logp("No second backup specified. Using file system scan.\n");
427 0 : backup2="n"; // For 'next'.
428 : default:
429 : break;
430 : }
431 :
432 : // The logfile option is only used for the status client stuff.
433 0 : if(logfile
434 0 : && (act!=ACTION_STATUS
435 0 : && act!=ACTION_STATUS_SNAPSHOT))
436 0 : logp("-l <logfile> option obsoleted\n");
437 :
438 0 : if(orig_client
439 0 : && *orig_client
440 0 : && set_string(confs[OPT_ORIG_CLIENT], orig_client))
441 : goto end;
442 :
443 : // The random delay needs to happen before the lock is got, otherwise
444 : // you would never be able to use burp by hand.
445 0 : if(randomise) set_int(confs[OPT_RANDOMISE], randomise);
446 0 : mode=get_e_burp_mode(confs[OPT_BURP_MODE]);
447 0 : if(mode==BURP_MODE_CLIENT
448 0 : && (act==ACTION_BACKUP_TIMED || act==ACTION_TIMER_CHECK))
449 0 : random_delay(confs);
450 :
451 0 : if(mode==BURP_MODE_SERVER
452 0 : && act==ACTION_CHAMP_CHOOSER)
453 : {
454 : // These server modes need to run without getting the lock.
455 : }
456 0 : else if(mode==BURP_MODE_CLIENT
457 0 : && (act==ACTION_LIST
458 : || act==ACTION_LIST_LONG
459 0 : || act==ACTION_DIFF
460 0 : || act==ACTION_DIFF_LONG
461 0 : || act==ACTION_STATUS
462 0 : || act==ACTION_STATUS_SNAPSHOT
463 0 : || act==ACTION_MONITOR))
464 : {
465 : // These client modes need to run without getting the lock.
466 : }
467 : else
468 : {
469 0 : const char *lockfile=confs_get_lockfile(confs);
470 0 : if(!(lock=lock_alloc_and_init(lockfile)))
471 : goto end;
472 0 : lock_get(lock);
473 0 : switch(lock->status)
474 : {
475 : case GET_LOCK_GOT: break;
476 : case GET_LOCK_NOT_GOT:
477 0 : logp("Could not get lockfile.\n");
478 0 : logp("Another process is probably running,\n");
479 0 : goto end;
480 : case GET_LOCK_ERROR:
481 : default:
482 0 : logp("Could not get lockfile.\n");
483 0 : logp("Maybe you do not have permissions to write to %s.\n", lockfile);
484 0 : goto end;
485 : }
486 : }
487 :
488 0 : set_int(confs[OPT_OVERWRITE], forceoverwrite);
489 0 : set_int(confs[OPT_STRIP], strip);
490 0 : set_int(confs[OPT_FORK], forking);
491 0 : set_int(confs[OPT_DAEMON], daemon);
492 :
493 0 : strip_trailing_slashes(&restoreprefix);
494 0 : strip_trailing_slashes(&browsedir);
495 0 : if(replace_conf_str(confs[OPT_BACKUP], backup)
496 0 : || replace_conf_str(confs[OPT_BACKUP2], backup2)
497 0 : || replace_conf_str(confs[OPT_RESTOREPREFIX], restoreprefix)
498 0 : || replace_conf_str(confs[OPT_REGEX], regex)
499 0 : || replace_conf_str(confs[OPT_BROWSEFILE], browsefile)
500 0 : || replace_conf_str(confs[OPT_BROWSEDIR], browsedir)
501 0 : || replace_conf_str(confs[OPT_MONITOR_LOGFILE], logfile))
502 : goto end;
503 :
504 0 : base64_init();
505 0 : hexmap_init();
506 :
507 0 : if(mode==BURP_MODE_SERVER)
508 : {
509 : #ifdef HAVE_WIN32
510 : logp("Sorry, server mode is not implemented for Windows.\n");
511 : #else
512 : ret=server_modes(act,
513 0 : conffile, lock, generate_ca_only, confs);
514 : #endif
515 : }
516 : else
517 : {
518 0 : ret=client(confs, act, vss_restore);
519 : }
520 :
521 : end:
522 0 : lock_release(lock);
523 0 : lock_free(&lock);
524 0 : confs_free(&confs);
525 0 : return ret;
526 : }
527 :
528 : #ifndef UTEST
529 : int main(int argc, char *argv[])
530 : {
531 : return real_main(argc, argv);
532 : }
533 : #endif
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