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docs-xml: fix pid directory example
[Samba/bb.git] / source3 / winbindd / winbindd.c
blob685ef488818e70617b96424558b3dd54019203dc
1 /*
2 Unix SMB/CIFS implementation.
3
4 Winbind daemon for ntdom nss module
5
6 Copyright (C) by Tim Potter 2000-2002
7 Copyright (C) Andrew Tridgell 2002
8 Copyright (C) Jelmer Vernooij 2003
9 Copyright (C) Volker Lendecke 2004
10
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 */
24
25 #include "includes.h"
26 #include "popt_common.h"
27 #include "winbindd.h"
28 #include "nsswitch/winbind_client.h"
29 #include "nsswitch/wb_reqtrans.h"
30 #include "ntdomain.h"
31 #include "../librpc/gen_ndr/srv_lsa.h"
32 #include "../librpc/gen_ndr/srv_samr.h"
33 #include "secrets.h"
34 #include "idmap.h"
35 #include "lib/addrchange.h"
36 #include "serverid.h"
37 #include "auth.h"
38 #include "messages.h"
39 #include "../lib/util/pidfile.h"
40
41 #undef DBGC_CLASS
42 #define DBGC_CLASS DBGC_WINBIND
43
44 static bool client_is_idle(struct winbindd_cli_state *state);
45 static void remove_client(struct winbindd_cli_state *state);
46
47 static bool opt_nocache = False;
48 static bool interactive = False;
49
50 extern bool override_logfile;
51
52 struct messaging_context *winbind_messaging_context(void)
53 {
54 struct messaging_context *msg_ctx = server_messaging_context();
55 if (likely(msg_ctx != NULL)) {
56 return msg_ctx;
57 }
58 smb_panic("Could not init winbindd's messaging context.\n");
59 return NULL;
60 }
61
62 /* Reload configuration */
63
64 static bool reload_services_file(const char *lfile)
65 {
66 bool ret;
67
68 if (lp_loaded()) {
69 char *fname = lp_configfile(talloc_tos());
70
71 if (file_exist(fname) && !strcsequal(fname,get_dyn_CONFIGFILE())) {
72 set_dyn_CONFIGFILE(fname);
73 }
74 TALLOC_FREE(fname);
75 }
76
77 /* if this is a child, restore the logfile to the special
78 name - <domain>, idmap, etc. */
79 if (lfile && *lfile) {
80 lp_set_logfile(lfile);
81 }
82
83 reopen_logs();
84 ret = lp_load_global(get_dyn_CONFIGFILE());
85
86 reopen_logs();
87 load_interfaces();
88
89 return(ret);
90 }
91
92
93 static void winbindd_status(void)
94 {
95 struct winbindd_cli_state *tmp;
96
97 DEBUG(0, ("winbindd status:\n"));
98
99 /* Print client state information */
100
101 DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
102
103 if (DEBUGLEVEL >= 2 && winbindd_num_clients()) {
104 DEBUG(2, ("\tclient list:\n"));
105 for(tmp = winbindd_client_list(); tmp; tmp = tmp->next) {
106 DEBUGADD(2, ("\t\tpid %lu, sock %d (%s)\n",
107 (unsigned long)tmp->pid, tmp->sock,
108 client_is_idle(tmp) ? "idle" : "active"));
109 }
110 }
111 }
112
113 /* Flush client cache */
114
115 static void flush_caches(void)
116 {
117 /* We need to invalidate cached user list entries on a SIGHUP
118 otherwise cached access denied errors due to restrict anonymous
119 hang around until the sequence number changes. */
120
121 if (!wcache_invalidate_cache()) {
122 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
123 if (!winbindd_cache_validate_and_initialize()) {
124 exit(1);
125 }
126 }
127 }
128
129 static void flush_caches_noinit(void)
130 {
131 /*
132 * We need to invalidate cached user list entries on a SIGHUP
133 * otherwise cached access denied errors due to restrict anonymous
134 * hang around until the sequence number changes.
135 * NB
136 * Skip uninitialized domains when flush cache.
137 * If domain is not initialized, it means it is never
138 * used or never become online. look, wcache_invalidate_cache()
139 * -> get_cache() -> init_dc_connection(). It causes a lot of traffic
140 * for unused domains and large traffic for primay domain's DC if there
141 * are many domains..
142 */
143
144 if (!wcache_invalidate_cache_noinit()) {
145 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
146 if (!winbindd_cache_validate_and_initialize()) {
147 exit(1);
148 }
149 }
150 }
151
152 /* Handle the signal by unlinking socket and exiting */
153
154 static void terminate(bool is_parent)
155 {
156 if (is_parent) {
157 /* When parent goes away we should
158 * remove the socket file. Not so
159 * when children terminate.
160 */
161 char *path = NULL;
162
163 if (asprintf(&path, "%s/%s",
164 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME) > 0) {
165 unlink(path);
166 SAFE_FREE(path);
167 }
168 }
169
170 idmap_close();
171
172 trustdom_cache_shutdown();
173
174 gencache_stabilize();
175
176 #if 0
177 if (interactive) {
178 TALLOC_CTX *mem_ctx = talloc_init("end_description");
179 char *description = talloc_describe_all(mem_ctx);
180
181 DEBUG(3, ("tallocs left:\n%s\n", description));
182 talloc_destroy(mem_ctx);
183 }
184 #endif
185
186 if (is_parent) {
187 serverid_deregister(procid_self());
188 pidfile_unlink(lp_piddir(), "winbindd");
189 }
190
191 exit(0);
192 }
193
194 static void winbindd_sig_term_handler(struct tevent_context *ev,
195 struct tevent_signal *se,
196 int signum,
197 int count,
198 void *siginfo,
199 void *private_data)
200 {
201 bool *is_parent = talloc_get_type_abort(private_data, bool);
202
203 DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
204 signum, (int)*is_parent));
205 terminate(*is_parent);
206 }
207
208 /*
209 handle stdin becoming readable when we are in --foreground mode
210 */
211 static void winbindd_stdin_handler(struct tevent_context *ev,
212 struct tevent_fd *fde,
213 uint16_t flags,
214 void *private_data)
215 {
216 char c;
217 if (read(0, &c, 1) != 1) {
218 bool *is_parent = talloc_get_type_abort(private_data, bool);
219
220 /* we have reached EOF on stdin, which means the
221 parent has exited. Shutdown the server */
222 DEBUG(0,("EOF on stdin (is_parent=%d)\n",
223 (int)*is_parent));
224 terminate(*is_parent);
225 }
226 }
227
228 bool winbindd_setup_sig_term_handler(bool parent)
229 {
230 struct tevent_signal *se;
231 bool *is_parent;
232
233 is_parent = talloc(winbind_event_context(), bool);
234 if (!is_parent) {
235 return false;
236 }
237
238 *is_parent = parent;
239
240 se = tevent_add_signal(winbind_event_context(),
241 is_parent,
242 SIGTERM, 0,
243 winbindd_sig_term_handler,
244 is_parent);
245 if (!se) {
246 DEBUG(0,("failed to setup SIGTERM handler"));
247 talloc_free(is_parent);
248 return false;
249 }
250
251 se = tevent_add_signal(winbind_event_context(),
252 is_parent,
253 SIGINT, 0,
254 winbindd_sig_term_handler,
255 is_parent);
256 if (!se) {
257 DEBUG(0,("failed to setup SIGINT handler"));
258 talloc_free(is_parent);
259 return false;
260 }
261
262 se = tevent_add_signal(winbind_event_context(),
263 is_parent,
264 SIGQUIT, 0,
265 winbindd_sig_term_handler,
266 is_parent);
267 if (!se) {
268 DEBUG(0,("failed to setup SIGINT handler"));
269 talloc_free(is_parent);
270 return false;
271 }
272
273 return true;
274 }
275
276 bool winbindd_setup_stdin_handler(bool parent, bool foreground)
277 {
278 bool *is_parent;
279
280 if (foreground) {
281 is_parent = talloc(winbind_event_context(), bool);
282 if (!is_parent) {
283 return false;
284 }
285
286 *is_parent = parent;
287
288 /* if we are running in the foreground then look for
289 EOF on stdin, and exit if it happens. This allows
290 us to die if the parent process dies
291 */
292 tevent_add_fd(winbind_event_context(), is_parent, 0, TEVENT_FD_READ, winbindd_stdin_handler, is_parent);
293 }
294
295 return true;
296 }
297
298 static void winbindd_sig_hup_handler(struct tevent_context *ev,
299 struct tevent_signal *se,
300 int signum,
301 int count,
302 void *siginfo,
303 void *private_data)
304 {
305 const char *file = (const char *)private_data;
306
307 DEBUG(1,("Reloading services after SIGHUP\n"));
308 flush_caches_noinit();
309 reload_services_file(file);
310 }
311
312 bool winbindd_setup_sig_hup_handler(const char *lfile)
313 {
314 struct tevent_signal *se;
315 char *file = NULL;
316
317 if (lfile) {
318 file = talloc_strdup(winbind_event_context(),
319 lfile);
320 if (!file) {
321 return false;
322 }
323 }
324
325 se = tevent_add_signal(winbind_event_context(),
326 winbind_event_context(),
327 SIGHUP, 0,
328 winbindd_sig_hup_handler,
329 file);
330 if (!se) {
331 return false;
332 }
333
334 return true;
335 }
336
337 static void winbindd_sig_chld_handler(struct tevent_context *ev,
338 struct tevent_signal *se,
339 int signum,
340 int count,
341 void *siginfo,
342 void *private_data)
343 {
344 pid_t pid;
345
346 while ((pid = sys_waitpid(-1, NULL, WNOHANG)) > 0) {
347 winbind_child_died(pid);
348 }
349 }
350
351 static bool winbindd_setup_sig_chld_handler(void)
352 {
353 struct tevent_signal *se;
354
355 se = tevent_add_signal(winbind_event_context(),
356 winbind_event_context(),
357 SIGCHLD, 0,
358 winbindd_sig_chld_handler,
359 NULL);
360 if (!se) {
361 return false;
362 }
363
364 return true;
365 }
366
367 static void winbindd_sig_usr2_handler(struct tevent_context *ev,
368 struct tevent_signal *se,
369 int signum,
370 int count,
371 void *siginfo,
372 void *private_data)
373 {
374 winbindd_status();
375 }
376
377 static bool winbindd_setup_sig_usr2_handler(void)
378 {
379 struct tevent_signal *se;
380
381 se = tevent_add_signal(winbind_event_context(),
382 winbind_event_context(),
383 SIGUSR2, 0,
384 winbindd_sig_usr2_handler,
385 NULL);
386 if (!se) {
387 return false;
388 }
389
390 return true;
391 }
392
393 /* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
394 static void msg_reload_services(struct messaging_context *msg,
395 void *private_data,
396 uint32_t msg_type,
397 struct server_id server_id,
398 DATA_BLOB *data)
399 {
400 /* Flush various caches */
401 flush_caches();
402 reload_services_file((const char *) private_data);
403 }
404
405 /* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
406 static void msg_shutdown(struct messaging_context *msg,
407 void *private_data,
408 uint32_t msg_type,
409 struct server_id server_id,
410 DATA_BLOB *data)
411 {
412 /* only the parent waits for this message */
413 DEBUG(0,("Got shutdown message\n"));
414 terminate(true);
415 }
416
417
418 static void winbind_msg_validate_cache(struct messaging_context *msg_ctx,
419 void *private_data,
420 uint32_t msg_type,
421 struct server_id server_id,
422 DATA_BLOB *data)
423 {
424 uint8 ret;
425 pid_t child_pid;
426 NTSTATUS status;
427
428 DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
429 "message.\n"));
430
431 /*
432 * call the validation code from a child:
433 * so we don't block the main winbindd and the validation
434 * code can safely use fork/waitpid...
435 */
436 child_pid = fork();
437
438 if (child_pid == -1) {
439 DEBUG(1, ("winbind_msg_validate_cache: Could not fork: %s\n",
440 strerror(errno)));
441 return;
442 }
443
444 if (child_pid != 0) {
445 /* parent */
446 DEBUG(5, ("winbind_msg_validate_cache: child created with "
447 "pid %d.\n", (int)child_pid));
448 return;
449 }
450
451 /* child */
452
453 status = winbindd_reinit_after_fork(NULL, NULL);
454 if (!NT_STATUS_IS_OK(status)) {
455 DEBUG(1, ("winbindd_reinit_after_fork failed: %s\n",
456 nt_errstr(status)));
457 _exit(0);
458 }
459
460 /* install default SIGCHLD handler: validation code uses fork/waitpid */
461 CatchSignal(SIGCHLD, SIG_DFL);
462
463 ret = (uint8)winbindd_validate_cache_nobackup();
464 DEBUG(10, ("winbindd_msg_validata_cache: got return value %d\n", ret));
465 messaging_send_buf(msg_ctx, server_id, MSG_WINBIND_VALIDATE_CACHE, &ret,
466 (size_t)1);
467 _exit(0);
468 }
469
470 static struct winbindd_dispatch_table {
471 enum winbindd_cmd cmd;
472 void (*fn)(struct winbindd_cli_state *state);
473 const char *winbindd_cmd_name;
474 } dispatch_table[] = {
475
476 /* Enumeration functions */
477
478 { WINBINDD_LIST_TRUSTDOM, winbindd_list_trusted_domains,
479 "LIST_TRUSTDOM" },
480
481 /* Miscellaneous */
482
483 { WINBINDD_INFO, winbindd_info, "INFO" },
484 { WINBINDD_INTERFACE_VERSION, winbindd_interface_version,
485 "INTERFACE_VERSION" },
486 { WINBINDD_DOMAIN_NAME, winbindd_domain_name, "DOMAIN_NAME" },
487 { WINBINDD_DOMAIN_INFO, winbindd_domain_info, "DOMAIN_INFO" },
488 { WINBINDD_DC_INFO, winbindd_dc_info, "DC_INFO" },
489 { WINBINDD_NETBIOS_NAME, winbindd_netbios_name, "NETBIOS_NAME" },
490 { WINBINDD_PRIV_PIPE_DIR, winbindd_priv_pipe_dir,
491 "WINBINDD_PRIV_PIPE_DIR" },
492
493 /* Credential cache access */
494 { WINBINDD_CCACHE_NTLMAUTH, winbindd_ccache_ntlm_auth, "NTLMAUTH" },
495 { WINBINDD_CCACHE_SAVE, winbindd_ccache_save, "CCACHE_SAVE" },
496
497 /* End of list */
498
499 { WINBINDD_NUM_CMDS, NULL, "NONE" }
500 };
501
502 struct winbindd_async_dispatch_table {
503 enum winbindd_cmd cmd;
504 const char *cmd_name;
505 struct tevent_req *(*send_req)(TALLOC_CTX *mem_ctx,
506 struct tevent_context *ev,
507 struct winbindd_cli_state *cli,
508 struct winbindd_request *request);
509 NTSTATUS (*recv_req)(struct tevent_req *req,
510 struct winbindd_response *presp);
511 };
512
513 static struct winbindd_async_dispatch_table async_nonpriv_table[] = {
514 { WINBINDD_PING, "PING",
515 wb_ping_send, wb_ping_recv },
516 { WINBINDD_LOOKUPSID, "LOOKUPSID",
517 winbindd_lookupsid_send, winbindd_lookupsid_recv },
518 { WINBINDD_LOOKUPSIDS, "LOOKUPSIDS",
519 winbindd_lookupsids_send, winbindd_lookupsids_recv },
520 { WINBINDD_LOOKUPNAME, "LOOKUPNAME",
521 winbindd_lookupname_send, winbindd_lookupname_recv },
522 { WINBINDD_SID_TO_UID, "SID_TO_UID",
523 winbindd_sid_to_uid_send, winbindd_sid_to_uid_recv },
524 { WINBINDD_SID_TO_GID, "SID_TO_GID",
525 winbindd_sid_to_gid_send, winbindd_sid_to_gid_recv },
526 { WINBINDD_UID_TO_SID, "UID_TO_SID",
527 winbindd_uid_to_sid_send, winbindd_uid_to_sid_recv },
528 { WINBINDD_GID_TO_SID, "GID_TO_SID",
529 winbindd_gid_to_sid_send, winbindd_gid_to_sid_recv },
530 { WINBINDD_SIDS_TO_XIDS, "SIDS_TO_XIDS",
531 winbindd_sids_to_xids_send, winbindd_sids_to_xids_recv },
532 { WINBINDD_GETPWSID, "GETPWSID",
533 winbindd_getpwsid_send, winbindd_getpwsid_recv },
534 { WINBINDD_GETPWNAM, "GETPWNAM",
535 winbindd_getpwnam_send, winbindd_getpwnam_recv },
536 { WINBINDD_GETPWUID, "GETPWUID",
537 winbindd_getpwuid_send, winbindd_getpwuid_recv },
538 { WINBINDD_GETSIDALIASES, "GETSIDALIASES",
539 winbindd_getsidaliases_send, winbindd_getsidaliases_recv },
540 { WINBINDD_GETUSERDOMGROUPS, "GETUSERDOMGROUPS",
541 winbindd_getuserdomgroups_send, winbindd_getuserdomgroups_recv },
542 { WINBINDD_GETGROUPS, "GETGROUPS",
543 winbindd_getgroups_send, winbindd_getgroups_recv },
544 { WINBINDD_SHOW_SEQUENCE, "SHOW_SEQUENCE",
545 winbindd_show_sequence_send, winbindd_show_sequence_recv },
546 { WINBINDD_GETGRGID, "GETGRGID",
547 winbindd_getgrgid_send, winbindd_getgrgid_recv },
548 { WINBINDD_GETGRNAM, "GETGRNAM",
549 winbindd_getgrnam_send, winbindd_getgrnam_recv },
550 { WINBINDD_GETUSERSIDS, "GETUSERSIDS",
551 winbindd_getusersids_send, winbindd_getusersids_recv },
552 { WINBINDD_LOOKUPRIDS, "LOOKUPRIDS",
553 winbindd_lookuprids_send, winbindd_lookuprids_recv },
554 { WINBINDD_SETPWENT, "SETPWENT",
555 winbindd_setpwent_send, winbindd_setpwent_recv },
556 { WINBINDD_GETPWENT, "GETPWENT",
557 winbindd_getpwent_send, winbindd_getpwent_recv },
558 { WINBINDD_ENDPWENT, "ENDPWENT",
559 winbindd_endpwent_send, winbindd_endpwent_recv },
560 { WINBINDD_DSGETDCNAME, "DSGETDCNAME",
561 winbindd_dsgetdcname_send, winbindd_dsgetdcname_recv },
562 { WINBINDD_GETDCNAME, "GETDCNAME",
563 winbindd_getdcname_send, winbindd_getdcname_recv },
564 { WINBINDD_SETGRENT, "SETGRENT",
565 winbindd_setgrent_send, winbindd_setgrent_recv },
566 { WINBINDD_GETGRENT, "GETGRENT",
567 winbindd_getgrent_send, winbindd_getgrent_recv },
568 { WINBINDD_ENDGRENT, "ENDGRENT",
569 winbindd_endgrent_send, winbindd_endgrent_recv },
570 { WINBINDD_LIST_USERS, "LIST_USERS",
571 winbindd_list_users_send, winbindd_list_users_recv },
572 { WINBINDD_LIST_GROUPS, "LIST_GROUPS",
573 winbindd_list_groups_send, winbindd_list_groups_recv },
574 { WINBINDD_CHECK_MACHACC, "CHECK_MACHACC",
575 winbindd_check_machine_acct_send, winbindd_check_machine_acct_recv },
576 { WINBINDD_PING_DC, "PING_DC",
577 winbindd_ping_dc_send, winbindd_ping_dc_recv },
578 { WINBINDD_PAM_AUTH, "PAM_AUTH",
579 winbindd_pam_auth_send, winbindd_pam_auth_recv },
580 { WINBINDD_PAM_LOGOFF, "PAM_LOGOFF",
581 winbindd_pam_logoff_send, winbindd_pam_logoff_recv },
582 { WINBINDD_PAM_CHAUTHTOK, "PAM_CHAUTHTOK",
583 winbindd_pam_chauthtok_send, winbindd_pam_chauthtok_recv },
584 { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, "PAM_CHNG_PSWD_AUTH_CRAP",
585 winbindd_pam_chng_pswd_auth_crap_send,
586 winbindd_pam_chng_pswd_auth_crap_recv },
587 { WINBINDD_WINS_BYIP, "WINS_BYIP",
588 winbindd_wins_byip_send, winbindd_wins_byip_recv },
589 { WINBINDD_WINS_BYNAME, "WINS_BYNAME",
590 winbindd_wins_byname_send, winbindd_wins_byname_recv },
591
592 { 0, NULL, NULL, NULL }
593 };
594
595 static struct winbindd_async_dispatch_table async_priv_table[] = {
596 { WINBINDD_ALLOCATE_UID, "ALLOCATE_UID",
597 winbindd_allocate_uid_send, winbindd_allocate_uid_recv },
598 { WINBINDD_ALLOCATE_GID, "ALLOCATE_GID",
599 winbindd_allocate_gid_send, winbindd_allocate_gid_recv },
600 { WINBINDD_CHANGE_MACHACC, "CHANGE_MACHACC",
601 winbindd_change_machine_acct_send, winbindd_change_machine_acct_recv },
602 { WINBINDD_PAM_AUTH_CRAP, "PAM_AUTH_CRAP",
603 winbindd_pam_auth_crap_send, winbindd_pam_auth_crap_recv },
604
605 { 0, NULL, NULL, NULL }
606 };
607
608 static void wb_request_done(struct tevent_req *req);
609
610 static void process_request(struct winbindd_cli_state *state)
611 {
612 struct winbindd_dispatch_table *table = dispatch_table;
613 struct winbindd_async_dispatch_table *atable;
614
615 state->mem_ctx = talloc_named(state, 0, "winbind request");
616 if (state->mem_ctx == NULL)
617 return;
618
619 /* Remember who asked us. */
620 state->pid = state->request->pid;
621
622 state->cmd_name = "unknown request";
623 state->recv_fn = NULL;
624
625 /* Process command */
626
627 for (atable = async_nonpriv_table; atable->send_req; atable += 1) {
628 if (state->request->cmd == atable->cmd) {
629 break;
630 }
631 }
632
633 if ((atable->send_req == NULL) && state->privileged) {
634 for (atable = async_priv_table; atable->send_req;
635 atable += 1) {
636 if (state->request->cmd == atable->cmd) {
637 break;
638 }
639 }
640 }
641
642 if (atable->send_req != NULL) {
643 struct tevent_req *req;
644
645 state->cmd_name = atable->cmd_name;
646 state->recv_fn = atable->recv_req;
647
648 DEBUG(10, ("process_request: Handling async request %d:%s\n",
649 (int)state->pid, state->cmd_name));
650
651 req = atable->send_req(state->mem_ctx, winbind_event_context(),
652 state, state->request);
653 if (req == NULL) {
654 DEBUG(0, ("process_request: atable->send failed for "
655 "%s\n", atable->cmd_name));
656 request_error(state);
657 return;
658 }
659 tevent_req_set_callback(req, wb_request_done, state);
660 return;
661 }
662
663 state->response = talloc_zero(state->mem_ctx,
664 struct winbindd_response);
665 if (state->response == NULL) {
666 DEBUG(10, ("talloc failed\n"));
667 remove_client(state);
668 return;
669 }
670 state->response->result = WINBINDD_PENDING;
671 state->response->length = sizeof(struct winbindd_response);
672
673 for (table = dispatch_table; table->fn; table++) {
674 if (state->request->cmd == table->cmd) {
675 DEBUG(10,("process_request: request fn %s\n",
676 table->winbindd_cmd_name ));
677 state->cmd_name = table->winbindd_cmd_name;
678 table->fn(state);
679 break;
680 }
681 }
682
683 if (!table->fn) {
684 DEBUG(10,("process_request: unknown request fn number %d\n",
685 (int)state->request->cmd ));
686 request_error(state);
687 }
688 }
689
690 static void wb_request_done(struct tevent_req *req)
691 {
692 struct winbindd_cli_state *state = tevent_req_callback_data(
693 req, struct winbindd_cli_state);
694 NTSTATUS status;
695
696 state->response = talloc_zero(state->mem_ctx,
697 struct winbindd_response);
698 if (state->response == NULL) {
699 DEBUG(0, ("wb_request_done[%d:%s]: talloc_zero failed - removing client\n",
700 (int)state->pid, state->cmd_name));
701 remove_client(state);
702 return;
703 }
704 state->response->result = WINBINDD_PENDING;
705 state->response->length = sizeof(struct winbindd_response);
706
707 status = state->recv_fn(req, state->response);
708 TALLOC_FREE(req);
709
710 DEBUG(10,("wb_request_done[%d:%s]: %s\n",
711 (int)state->pid, state->cmd_name, nt_errstr(status)));
712
713 if (!NT_STATUS_IS_OK(status)) {
714 request_error(state);
715 return;
716 }
717 request_ok(state);
718 }
719
720 /*
721 * This is the main event loop of winbind requests. It goes through a
722 * state-machine of 3 read/write requests, 4 if you have extra data to send.
723 *
724 * An idle winbind client has a read request of 4 bytes outstanding,
725 * finalizing function is request_len_recv, checking the length. request_recv
726 * then processes the packet. The processing function then at some point has
727 * to call request_finished which schedules sending the response.
728 */
729
730 static void request_finished(struct winbindd_cli_state *state);
731
732 static void winbind_client_request_read(struct tevent_req *req);
733 static void winbind_client_response_written(struct tevent_req *req);
734
735 static void request_finished(struct winbindd_cli_state *state)
736 {
737 struct tevent_req *req;
738
739 TALLOC_FREE(state->request);
740
741 req = wb_resp_write_send(state, winbind_event_context(),
742 state->out_queue, state->sock,
743 state->response);
744 if (req == NULL) {
745 DEBUG(10,("request_finished[%d:%s]: wb_resp_write_send() failed\n",
746 (int)state->pid, state->cmd_name));
747 remove_client(state);
748 return;
749 }
750 tevent_req_set_callback(req, winbind_client_response_written, state);
751 }
752
753 static void winbind_client_response_written(struct tevent_req *req)
754 {
755 struct winbindd_cli_state *state = tevent_req_callback_data(
756 req, struct winbindd_cli_state);
757 ssize_t ret;
758 int err;
759
760 ret = wb_resp_write_recv(req, &err);
761 TALLOC_FREE(req);
762 if (ret == -1) {
763 close(state->sock);
764 state->sock = -1;
765 DEBUG(2, ("Could not write response[%d:%s] to client: %s\n",
766 (int)state->pid, state->cmd_name, strerror(err)));
767 remove_client(state);
768 return;
769 }
770
771 DEBUG(10,("winbind_client_response_written[%d:%s]: delivered response "
772 "to client\n", (int)state->pid, state->cmd_name));
773
774 TALLOC_FREE(state->mem_ctx);
775 state->response = NULL;
776 state->cmd_name = "no request";
777 state->recv_fn = NULL;
778
779 req = wb_req_read_send(state, winbind_event_context(), state->sock,
780 WINBINDD_MAX_EXTRA_DATA);
781 if (req == NULL) {
782 remove_client(state);
783 return;
784 }
785 tevent_req_set_callback(req, winbind_client_request_read, state);
786 }
787
788 void request_error(struct winbindd_cli_state *state)
789 {
790 SMB_ASSERT(state->response->result == WINBINDD_PENDING);
791 state->response->result = WINBINDD_ERROR;
792 request_finished(state);
793 }
794
795 void request_ok(struct winbindd_cli_state *state)
796 {
797 SMB_ASSERT(state->response->result == WINBINDD_PENDING);
798 state->response->result = WINBINDD_OK;
799 request_finished(state);
800 }
801
802 /* Process a new connection by adding it to the client connection list */
803
804 static void new_connection(int listen_sock, bool privileged)
805 {
806 struct sockaddr_un sunaddr;
807 struct winbindd_cli_state *state;
808 struct tevent_req *req;
809 socklen_t len;
810 int sock;
811
812 /* Accept connection */
813
814 len = sizeof(sunaddr);
815
816 sock = accept(listen_sock, (struct sockaddr *)(void *)&sunaddr, &len);
817
818 if (sock == -1) {
819 if (errno != EINTR) {
820 DEBUG(0, ("Faild to accept socket - %s\n",
821 strerror(errno)));
822 }
823 return;
824 }
825
826 DEBUG(6,("accepted socket %d\n", sock));
827
828 /* Create new connection structure */
829
830 if ((state = talloc_zero(NULL, struct winbindd_cli_state)) == NULL) {
831 close(sock);
832 return;
833 }
834
835 state->sock = sock;
836
837 state->out_queue = tevent_queue_create(state, "winbind client reply");
838 if (state->out_queue == NULL) {
839 close(sock);
840 TALLOC_FREE(state);
841 return;
842 }
843
844 state->last_access = time(NULL);
845
846 state->privileged = privileged;
847
848 req = wb_req_read_send(state, winbind_event_context(), state->sock,
849 WINBINDD_MAX_EXTRA_DATA);
850 if (req == NULL) {
851 TALLOC_FREE(state);
852 close(sock);
853 return;
854 }
855 tevent_req_set_callback(req, winbind_client_request_read, state);
856
857 /* Add to connection list */
858
859 winbindd_add_client(state);
860 }
861
862 static void winbind_client_request_read(struct tevent_req *req)
863 {
864 struct winbindd_cli_state *state = tevent_req_callback_data(
865 req, struct winbindd_cli_state);
866 ssize_t ret;
867 int err;
868
869 ret = wb_req_read_recv(req, state, &state->request, &err);
870 TALLOC_FREE(req);
871 if (ret == -1) {
872 if (err == EPIPE) {
873 DEBUG(6, ("closing socket %d, client exited\n",
874 state->sock));
875 } else {
876 DEBUG(2, ("Could not read client request from fd %d: "
877 "%s\n", state->sock, strerror(err)));
878 }
879 close(state->sock);
880 state->sock = -1;
881 remove_client(state);
882 return;
883 }
884 process_request(state);
885 }
886
887 /* Remove a client connection from client connection list */
888
889 static void remove_client(struct winbindd_cli_state *state)
890 {
891 char c = 0;
892 int nwritten;
893
894 /* It's a dead client - hold a funeral */
895
896 if (state == NULL) {
897 return;
898 }
899
900 if (state->sock != -1) {
901 /* tell client, we are closing ... */
902 nwritten = write(state->sock, &c, sizeof(c));
903 if (nwritten == -1) {
904 DEBUG(2, ("final write to client failed: %s\n",
905 strerror(errno)));
906 }
907
908 /* Close socket */
909
910 close(state->sock);
911 state->sock = -1;
912 }
913
914 TALLOC_FREE(state->mem_ctx);
915
916 /* Remove from list and free */
917
918 winbindd_remove_client(state);
919 TALLOC_FREE(state);
920 }
921
922 /* Is a client idle? */
923
924 static bool client_is_idle(struct winbindd_cli_state *state) {
925 return (state->response == NULL &&
926 !state->pwent_state && !state->grent_state);
927 }
928
929 /* Shutdown client connection which has been idle for the longest time */
930
931 static bool remove_idle_client(void)
932 {
933 struct winbindd_cli_state *state, *remove_state = NULL;
934 time_t last_access = 0;
935 int nidle = 0;
936
937 for (state = winbindd_client_list(); state; state = state->next) {
938 if (client_is_idle(state)) {
939 nidle++;
940 if (!last_access || state->last_access < last_access) {
941 last_access = state->last_access;
942 remove_state = state;
943 }
944 }
945 }
946
947 if (remove_state) {
948 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
949 nidle, remove_state->sock, (unsigned int)remove_state->pid));
950 remove_client(remove_state);
951 return True;
952 }
953
954 return False;
955 }
956
957 struct winbindd_listen_state {
958 bool privileged;
959 int fd;
960 };
961
962 static void winbindd_listen_fde_handler(struct tevent_context *ev,
963 struct tevent_fd *fde,
964 uint16_t flags,
965 void *private_data)
966 {
967 struct winbindd_listen_state *s = talloc_get_type_abort(private_data,
968 struct winbindd_listen_state);
969
970 while (winbindd_num_clients() > lp_winbind_max_clients() - 1) {
971 DEBUG(5,("winbindd: Exceeding %d client "
972 "connections, removing idle "
973 "connection.\n", lp_winbind_max_clients()));
974 if (!remove_idle_client()) {
975 DEBUG(0,("winbindd: Exceeding %d "
976 "client connections, no idle "
977 "connection found\n",
978 lp_winbind_max_clients()));
979 break;
980 }
981 }
982 new_connection(s->fd, s->privileged);
983 }
984
985 /*
986 * Winbindd socket accessor functions
987 */
988
989 const char *get_winbind_pipe_dir(void)
990 {
991 return lp_parm_const_string(-1, "winbindd", "socket dir", get_dyn_WINBINDD_SOCKET_DIR());
992 }
993
994 char *get_winbind_priv_pipe_dir(void)
995 {
996 return state_path(WINBINDD_PRIV_SOCKET_SUBDIR);
997 }
998
999 static bool winbindd_setup_listeners(void)
1000 {
1001 struct winbindd_listen_state *pub_state = NULL;
1002 struct winbindd_listen_state *priv_state = NULL;
1003 struct tevent_fd *fde;
1004 int rc;
1005
1006 pub_state = talloc(winbind_event_context(),
1007 struct winbindd_listen_state);
1008 if (!pub_state) {
1009 goto failed;
1010 }
1011
1012 pub_state->privileged = false;
1013 pub_state->fd = create_pipe_sock(
1014 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME, 0755);
1015 if (pub_state->fd == -1) {
1016 goto failed;
1017 }
1018 rc = listen(pub_state->fd, 5);
1019 if (rc < 0) {
1020 goto failed;
1021 }
1022
1023 fde = tevent_add_fd(winbind_event_context(), pub_state, pub_state->fd,
1024 TEVENT_FD_READ, winbindd_listen_fde_handler,
1025 pub_state);
1026 if (fde == NULL) {
1027 close(pub_state->fd);
1028 goto failed;
1029 }
1030 tevent_fd_set_auto_close(fde);
1031
1032 priv_state = talloc(winbind_event_context(),
1033 struct winbindd_listen_state);
1034 if (!priv_state) {
1035 goto failed;
1036 }
1037
1038 priv_state->privileged = true;
1039 priv_state->fd = create_pipe_sock(
1040 get_winbind_priv_pipe_dir(), WINBINDD_SOCKET_NAME, 0750);
1041 if (priv_state->fd == -1) {
1042 goto failed;
1043 }
1044 rc = listen(priv_state->fd, 5);
1045 if (rc < 0) {
1046 goto failed;
1047 }
1048
1049 fde = tevent_add_fd(winbind_event_context(), priv_state,
1050 priv_state->fd, TEVENT_FD_READ,
1051 winbindd_listen_fde_handler, priv_state);
1052 if (fde == NULL) {
1053 close(priv_state->fd);
1054 goto failed;
1055 }
1056 tevent_fd_set_auto_close(fde);
1057
1058 return true;
1059 failed:
1060 TALLOC_FREE(pub_state);
1061 TALLOC_FREE(priv_state);
1062 return false;
1063 }
1064
1065 bool winbindd_use_idmap_cache(void)
1066 {
1067 return !opt_nocache;
1068 }
1069
1070 bool winbindd_use_cache(void)
1071 {
1072 return !opt_nocache;
1073 }
1074
1075 void winbindd_register_handlers(bool foreground)
1076 {
1077 /* Setup signal handlers */
1078
1079 if (!winbindd_setup_sig_term_handler(true))
1080 exit(1);
1081 if (!winbindd_setup_stdin_handler(true, foreground))
1082 exit(1);
1083 if (!winbindd_setup_sig_hup_handler(NULL))
1084 exit(1);
1085 if (!winbindd_setup_sig_chld_handler())
1086 exit(1);
1087 if (!winbindd_setup_sig_usr2_handler())
1088 exit(1);
1089
1090 CatchSignal(SIGPIPE, SIG_IGN); /* Ignore sigpipe */
1091
1092 /*
1093 * Ensure all cache and idmap caches are consistent
1094 * and initialized before we startup.
1095 */
1096 if (!winbindd_cache_validate_and_initialize()) {
1097 exit(1);
1098 }
1099
1100 /* get broadcast messages */
1101
1102 if (!serverid_register(procid_self(),
1103 FLAG_MSG_GENERAL |
1104 FLAG_MSG_WINBIND |
1105 FLAG_MSG_DBWRAP)) {
1106 DEBUG(1, ("Could not register myself in serverid.tdb\n"));
1107 exit(1);
1108 }
1109
1110 /* React on 'smbcontrol winbindd reload-config' in the same way
1111 as to SIGHUP signal */
1112 messaging_register(winbind_messaging_context(), NULL,
1113 MSG_SMB_CONF_UPDATED, msg_reload_services);
1114 messaging_register(winbind_messaging_context(), NULL,
1115 MSG_SHUTDOWN, msg_shutdown);
1116
1117 /* Handle online/offline messages. */
1118 messaging_register(winbind_messaging_context(), NULL,
1119 MSG_WINBIND_OFFLINE, winbind_msg_offline);
1120 messaging_register(winbind_messaging_context(), NULL,
1121 MSG_WINBIND_ONLINE, winbind_msg_online);
1122 messaging_register(winbind_messaging_context(), NULL,
1123 MSG_WINBIND_ONLINESTATUS, winbind_msg_onlinestatus);
1124
1125 messaging_register(winbind_messaging_context(), NULL,
1126 MSG_DUMP_EVENT_LIST, winbind_msg_dump_event_list);
1127
1128 messaging_register(winbind_messaging_context(), NULL,
1129 MSG_WINBIND_VALIDATE_CACHE,
1130 winbind_msg_validate_cache);
1131
1132 messaging_register(winbind_messaging_context(), NULL,
1133 MSG_WINBIND_DUMP_DOMAIN_LIST,
1134 winbind_msg_dump_domain_list);
1135
1136 messaging_register(winbind_messaging_context(), NULL,
1137 MSG_WINBIND_IP_DROPPED,
1138 winbind_msg_ip_dropped_parent);
1139
1140 /* Register handler for MSG_DEBUG. */
1141 messaging_register(winbind_messaging_context(), NULL,
1142 MSG_DEBUG,
1143 winbind_msg_debug);
1144
1145 netsamlogon_cache_init(); /* Non-critical */
1146
1147 /* clear the cached list of trusted domains */
1148
1149 wcache_tdc_clear();
1150
1151 if (!init_domain_list()) {
1152 DEBUG(0,("unable to initialize domain list\n"));
1153 exit(1);
1154 }
1155
1156 init_idmap_child();
1157 init_locator_child();
1158
1159 smb_nscd_flush_user_cache();
1160 smb_nscd_flush_group_cache();
1161
1162 if (lp_allow_trusted_domains()) {
1163 if (tevent_add_timer(winbind_event_context(), NULL, timeval_zero(),
1164 rescan_trusted_domains, NULL) == NULL) {
1165 DEBUG(0, ("Could not trigger rescan_trusted_domains()\n"));
1166 exit(1);
1167 }
1168 }
1169
1170 }
1171
1172 struct winbindd_addrchanged_state {
1173 struct addrchange_context *ctx;
1174 struct tevent_context *ev;
1175 struct messaging_context *msg_ctx;
1176 };
1177
1178 static void winbindd_addr_changed(struct tevent_req *req);
1179
1180 static void winbindd_init_addrchange(TALLOC_CTX *mem_ctx,
1181 struct tevent_context *ev,
1182 struct messaging_context *msg_ctx)
1183 {
1184 struct winbindd_addrchanged_state *state;
1185 struct tevent_req *req;
1186 NTSTATUS status;
1187
1188 state = talloc(mem_ctx, struct winbindd_addrchanged_state);
1189 if (state == NULL) {
1190 DEBUG(10, ("talloc failed\n"));
1191 return;
1192 }
1193 state->ev = ev;
1194 state->msg_ctx = msg_ctx;
1195
1196 status = addrchange_context_create(state, &state->ctx);
1197 if (!NT_STATUS_IS_OK(status)) {
1198 DEBUG(10, ("addrchange_context_create failed: %s\n",
1199 nt_errstr(status)));
1200 TALLOC_FREE(state);
1201 return;
1202 }
1203 req = addrchange_send(state, ev, state->ctx);
1204 if (req == NULL) {
1205 DEBUG(0, ("addrchange_send failed\n"));
1206 TALLOC_FREE(state);
1207 return;
1208 }
1209 tevent_req_set_callback(req, winbindd_addr_changed, state);
1210 }
1211
1212 static void winbindd_addr_changed(struct tevent_req *req)
1213 {
1214 struct winbindd_addrchanged_state *state = tevent_req_callback_data(
1215 req, struct winbindd_addrchanged_state);
1216 enum addrchange_type type;
1217 struct sockaddr_storage addr;
1218 NTSTATUS status;
1219
1220 status = addrchange_recv(req, &type, &addr);
1221 TALLOC_FREE(req);
1222 if (!NT_STATUS_IS_OK(status)) {
1223 DEBUG(10, ("addrchange_recv failed: %s, stop listening\n",
1224 nt_errstr(status)));
1225 TALLOC_FREE(state);
1226 return;
1227 }
1228 if (type == ADDRCHANGE_DEL) {
1229 char addrstr[INET6_ADDRSTRLEN];
1230 DATA_BLOB blob;
1231
1232 print_sockaddr(addrstr, sizeof(addrstr), &addr);
1233
1234 DEBUG(3, ("winbindd: kernel (AF_NETLINK) dropped ip %s\n",
1235 addrstr));
1236
1237 blob = data_blob_const(addrstr, strlen(addrstr)+1);
1238
1239 status = messaging_send(state->msg_ctx,
1240 messaging_server_id(state->msg_ctx),
1241 MSG_WINBIND_IP_DROPPED, &blob);
1242 if (!NT_STATUS_IS_OK(status)) {
1243 DEBUG(10, ("messaging_send failed: %s - ignoring\n",
1244 nt_errstr(status)));
1245 }
1246 }
1247 req = addrchange_send(state, state->ev, state->ctx);
1248 if (req == NULL) {
1249 DEBUG(0, ("addrchange_send failed\n"));
1250 TALLOC_FREE(state);
1251 return;
1252 }
1253 tevent_req_set_callback(req, winbindd_addr_changed, state);
1254 }
1255
1256 /* Main function */
1257
1258 int main(int argc, char **argv, char **envp)
1259 {
1260 static bool is_daemon = False;
1261 static bool Fork = True;
1262 static bool log_stdout = False;
1263 static bool no_process_group = False;
1264 enum {
1265 OPT_DAEMON = 1000,
1266 OPT_FORK,
1267 OPT_NO_PROCESS_GROUP,
1268 OPT_LOG_STDOUT
1269 };
1270 struct poptOption long_options[] = {
1271 POPT_AUTOHELP
1272 { "stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1273 { "foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Daemon in foreground mode" },
1274 { "no-process-group", 0, POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1275 { "daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1276 { "interactive", 'i', POPT_ARG_NONE, NULL, 'i', "Interactive mode" },
1277 { "no-caching", 'n', POPT_ARG_NONE, NULL, 'n', "Disable caching" },
1278 POPT_COMMON_SAMBA
1279 POPT_TABLEEND
1280 };
1281 poptContext pc;
1282 int opt;
1283 TALLOC_CTX *frame;
1284 NTSTATUS status;
1285
1286 /*
1287 * Do this before any other talloc operation
1288 */
1289 talloc_enable_null_tracking();
1290 frame = talloc_stackframe();
1291
1292 setup_logging("winbindd", DEBUG_DEFAULT_STDOUT);
1293
1294 /* glibc (?) likes to print "User defined signal 1" and exit if a
1295 SIGUSR[12] is received before a handler is installed */
1296
1297 CatchSignal(SIGUSR1, SIG_IGN);
1298 CatchSignal(SIGUSR2, SIG_IGN);
1299
1300 fault_setup();
1301 dump_core_setup("winbindd", lp_logfile(talloc_tos()));
1302
1303 load_case_tables();
1304
1305 /* Initialise for running in non-root mode */
1306
1307 sec_init();
1308
1309 set_remote_machine_name("winbindd", False);
1310
1311 /* Set environment variable so we don't recursively call ourselves.
1312 This may also be useful interactively. */
1313
1314 if ( !winbind_off() ) {
1315 DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
1316 exit(1);
1317 }
1318
1319 /* Initialise samba/rpc client stuff */
1320
1321 pc = poptGetContext("winbindd", argc, (const char **)argv, long_options, 0);
1322
1323 while ((opt = poptGetNextOpt(pc)) != -1) {
1324 switch (opt) {
1325 /* Don't become a daemon */
1326 case OPT_DAEMON:
1327 is_daemon = True;
1328 break;
1329 case 'i':
1330 interactive = True;
1331 log_stdout = True;
1332 Fork = False;
1333 break;
1334 case OPT_FORK:
1335 Fork = false;
1336 break;
1337 case OPT_NO_PROCESS_GROUP:
1338 no_process_group = true;
1339 break;
1340 case OPT_LOG_STDOUT:
1341 log_stdout = true;
1342 break;
1343 case 'n':
1344 opt_nocache = true;
1345 break;
1346 default:
1347 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1348 poptBadOption(pc, 0), poptStrerror(opt));
1349 poptPrintUsage(pc, stderr, 0);
1350 exit(1);
1351 }
1352 }
1353
1354 /* We call dump_core_setup one more time because the command line can
1355 * set the log file or the log-basename and this will influence where
1356 * cores are stored. Without this call get_dyn_LOGFILEBASE will be
1357 * the default value derived from build's prefix. For EOM this value
1358 * is often not related to the path where winbindd is actually run
1359 * in production.
1360 */
1361 dump_core_setup("winbindd", lp_logfile(talloc_tos()));
1362 if (is_daemon && interactive) {
1363 d_fprintf(stderr,"\nERROR: "
1364 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
1365 poptPrintUsage(pc, stderr, 0);
1366 exit(1);
1367 }
1368
1369 if (log_stdout && Fork) {
1370 d_fprintf(stderr, "\nERROR: "
1371 "Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n\n");
1372 poptPrintUsage(pc, stderr, 0);
1373 exit(1);
1374 }
1375
1376 poptFreeContext(pc);
1377
1378 if (!override_logfile) {
1379 char *lfile = NULL;
1380 if (asprintf(&lfile,"%s/log.winbindd",
1381 get_dyn_LOGFILEBASE()) > 0) {
1382 lp_set_logfile(lfile);
1383 SAFE_FREE(lfile);
1384 }
1385 }
1386
1387 if (log_stdout) {
1388 setup_logging("winbindd", DEBUG_STDOUT);
1389 } else {
1390 setup_logging("winbindd", DEBUG_FILE);
1391 }
1392 reopen_logs();
1393
1394 DEBUG(0,("winbindd version %s started.\n", samba_version_string()));
1395 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1396
1397 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1398 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1399 exit(1);
1400 }
1401 /* After parsing the configuration file we setup the core path one more time
1402 * as the log file might have been set in the configuration and cores's
1403 * path is by default basename(lp_logfile()).
1404 */
1405 dump_core_setup("winbindd", lp_logfile(talloc_tos()));
1406
1407 /* Initialise messaging system */
1408
1409 if (winbind_messaging_context() == NULL) {
1410 exit(1);
1411 }
1412
1413 if (!reload_services_file(NULL)) {
1414 DEBUG(0, ("error opening config file\n"));
1415 exit(1);
1416 }
1417
1418 if (!directory_exist(lp_lockdir())) {
1419 mkdir(lp_lockdir(), 0755);
1420 }
1421
1422 if (!directory_exist(lp_piddir())) {
1423 mkdir(lp_piddir(), 0755);
1424 }
1425
1426 /* Setup names. */
1427
1428 if (!init_names())
1429 exit(1);
1430
1431 load_interfaces();
1432
1433 if (!secrets_init()) {
1434
1435 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1436 return False;
1437 }
1438
1439 /* Unblock all signals we are interested in as they may have been
1440 blocked by the parent process. */
1441
1442 BlockSignals(False, SIGINT);
1443 BlockSignals(False, SIGQUIT);
1444 BlockSignals(False, SIGTERM);
1445 BlockSignals(False, SIGUSR1);
1446 BlockSignals(False, SIGUSR2);
1447 BlockSignals(False, SIGHUP);
1448 BlockSignals(False, SIGCHLD);
1449
1450 if (!interactive)
1451 become_daemon(Fork, no_process_group, log_stdout);
1452
1453 pidfile_create(lp_piddir(), "winbindd");
1454
1455 #if HAVE_SETPGID
1456 /*
1457 * If we're interactive we want to set our own process group for
1458 * signal management.
1459 */
1460 if (interactive && !no_process_group)
1461 setpgid( (pid_t)0, (pid_t)0);
1462 #endif
1463
1464 TimeInit();
1465
1466 /* Don't use winbindd_reinit_after_fork here as
1467 * we're just starting up and haven't created any
1468 * winbindd-specific resources we must free yet. JRA.
1469 */
1470
1471 status = reinit_after_fork(winbind_messaging_context(),
1472 winbind_event_context(),
1473 false);
1474 if (!NT_STATUS_IS_OK(status)) {
1475 DEBUG(0,("reinit_after_fork() failed\n"));
1476 exit(1);
1477 }
1478
1479 /*
1480 * Do not initialize the parent-child-pipe before becoming
1481 * a daemon: this is used to detect a died parent in the child
1482 * process.
1483 */
1484 status = init_before_fork();
1485 if (!NT_STATUS_IS_OK(status)) {
1486 DEBUG(0, ("init_before_fork failed: %s\n", nt_errstr(status)));
1487 exit(1);
1488 }
1489
1490 winbindd_register_handlers(!Fork);
1491
1492 status = init_system_session_info();
1493 if (!NT_STATUS_IS_OK(status)) {
1494 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1495 nt_errstr(status)));
1496 exit(1);
1497 }
1498
1499 rpc_lsarpc_init(NULL);
1500 rpc_samr_init(NULL);
1501
1502 winbindd_init_addrchange(NULL, winbind_event_context(),
1503 winbind_messaging_context());
1504
1505 /* setup listen sockets */
1506
1507 if (!winbindd_setup_listeners()) {
1508 DEBUG(0,("winbindd_setup_listeners() failed\n"));
1509 exit(1);
1510 }
1511
1512 TALLOC_FREE(frame);
1513 /* Loop waiting for requests */
1514 while (1) {
1515 frame = talloc_stackframe();
1516
1517 if (tevent_loop_once(winbind_event_context()) == -1) {
1518 DEBUG(1, ("tevent_loop_once() failed: %s\n",
1519 strerror(errno)));
1520 return 1;
1521 }
1522
1523 TALLOC_FREE(frame);
1524 }
1525
1526 return 0;
1527 }