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