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s3: Make winbindd_reinit_after_fork return NTSTATUS
[Samba.git] / source3 / winbindd / winbindd.c
blobf9742f29d8270dd8cd49db45e59b523675e7cd6e
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 "../librpc/gen_ndr/srv_lsa.h"
31 #include "../librpc/gen_ndr/srv_samr.h"
32 #include "secrets.h"
33 #include "idmap.h"
34 #include "lib/addrchange.h"
35 #include "serverid.h"
36 #include "auth.h"
37 #include "messages.h"
38
39 #undef DBGC_CLASS
40 #define DBGC_CLASS DBGC_WINBIND
41
42 static bool client_is_idle(struct winbindd_cli_state *state);
43 static void remove_client(struct winbindd_cli_state *state);
44
45 static bool opt_nocache = False;
46 static bool interactive = False;
47
48 extern bool override_logfile;
49
50 struct messaging_context *winbind_messaging_context(void)
51 {
52 struct messaging_context *msg_ctx = server_messaging_context();
53 if (likely(msg_ctx != NULL)) {
54 return msg_ctx;
55 }
56 smb_panic("Could not init winbindd's messaging context.\n");
57 return NULL;
58 }
59
60 /* Reload configuration */
61
62 static bool reload_services_file(const char *lfile)
63 {
64 bool ret;
65
66 if (lp_loaded()) {
67 const char *fname = lp_configfile();
68
69 if (file_exist(fname) && !strcsequal(fname,get_dyn_CONFIGFILE())) {
70 set_dyn_CONFIGFILE(fname);
71 }
72 }
73
74 /* if this is a child, restore the logfile to the special
75 name - <domain>, idmap, etc. */
76 if (lfile && *lfile) {
77 lp_set_logfile(lfile);
78 }
79
80 reopen_logs();
81 ret = lp_load(get_dyn_CONFIGFILE(),False,False,True,True);
82
83 reopen_logs();
84 load_interfaces();
85
86 return(ret);
87 }
88
89
90 /**************************************************************************** **
91 Handle a fault..
92 **************************************************************************** */
93
94 static void fault_quit(void)
95 {
96 dump_core();
97 }
98
99 static void winbindd_status(void)
100 {
101 struct winbindd_cli_state *tmp;
102
103 DEBUG(0, ("winbindd status:\n"));
104
105 /* Print client state information */
106
107 DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
108
109 if (DEBUGLEVEL >= 2 && winbindd_num_clients()) {
110 DEBUG(2, ("\tclient list:\n"));
111 for(tmp = winbindd_client_list(); tmp; tmp = tmp->next) {
112 DEBUGADD(2, ("\t\tpid %lu, sock %d (%s)\n",
113 (unsigned long)tmp->pid, tmp->sock,
114 client_is_idle(tmp) ? "idle" : "active"));
115 }
116 }
117 }
118
119 /* Flush client cache */
120
121 static void flush_caches(void)
122 {
123 /* We need to invalidate cached user list entries on a SIGHUP
124 otherwise cached access denied errors due to restrict anonymous
125 hang around until the sequence number changes. */
126
127 if (!wcache_invalidate_cache()) {
128 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
129 if (!winbindd_cache_validate_and_initialize()) {
130 exit(1);
131 }
132 }
133 }
134
135 static void flush_caches_noinit(void)
136 {
137 /*
138 * We need to invalidate cached user list entries on a SIGHUP
139 * otherwise cached access denied errors due to restrict anonymous
140 * hang around until the sequence number changes.
141 * NB
142 * Skip uninitialized domains when flush cache.
143 * If domain is not initialized, it means it is never
144 * used or never become online. look, wcache_invalidate_cache()
145 * -> get_cache() -> init_dc_connection(). It causes a lot of traffic
146 * for unused domains and large traffic for primay domain's DC if there
147 * are many domains..
148 */
149
150 if (!wcache_invalidate_cache_noinit()) {
151 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
152 if (!winbindd_cache_validate_and_initialize()) {
153 exit(1);
154 }
155 }
156 }
157
158 /* Handle the signal by unlinking socket and exiting */
159
160 static void terminate(bool is_parent)
161 {
162 if (is_parent) {
163 /* When parent goes away we should
164 * remove the socket file. Not so
165 * when children terminate.
166 */
167 char *path = NULL;
168
169 if (asprintf(&path, "%s/%s",
170 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME) > 0) {
171 unlink(path);
172 SAFE_FREE(path);
173 }
174 }
175
176 idmap_close();
177
178 trustdom_cache_shutdown();
179
180 gencache_stabilize();
181
182 #if 0
183 if (interactive) {
184 TALLOC_CTX *mem_ctx = talloc_init("end_description");
185 char *description = talloc_describe_all(mem_ctx);
186
187 DEBUG(3, ("tallocs left:\n%s\n", description));
188 talloc_destroy(mem_ctx);
189 }
190 #endif
191
192 if (is_parent) {
193 serverid_deregister(procid_self());
194 pidfile_unlink();
195 }
196
197 exit(0);
198 }
199
200 static void winbindd_sig_term_handler(struct tevent_context *ev,
201 struct tevent_signal *se,
202 int signum,
203 int count,
204 void *siginfo,
205 void *private_data)
206 {
207 bool *is_parent = talloc_get_type_abort(private_data, bool);
208
209 DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
210 signum, (int)*is_parent));
211 terminate(*is_parent);
212 }
213
214 bool winbindd_setup_sig_term_handler(bool parent)
215 {
216 struct tevent_signal *se;
217 bool *is_parent;
218
219 is_parent = talloc(winbind_event_context(), bool);
220 if (!is_parent) {
221 return false;
222 }
223
224 *is_parent = parent;
225
226 se = tevent_add_signal(winbind_event_context(),
227 is_parent,
228 SIGTERM, 0,
229 winbindd_sig_term_handler,
230 is_parent);
231 if (!se) {
232 DEBUG(0,("failed to setup SIGTERM handler"));
233 talloc_free(is_parent);
234 return false;
235 }
236
237 se = tevent_add_signal(winbind_event_context(),
238 is_parent,
239 SIGINT, 0,
240 winbindd_sig_term_handler,
241 is_parent);
242 if (!se) {
243 DEBUG(0,("failed to setup SIGINT handler"));
244 talloc_free(is_parent);
245 return false;
246 }
247
248 se = tevent_add_signal(winbind_event_context(),
249 is_parent,
250 SIGQUIT, 0,
251 winbindd_sig_term_handler,
252 is_parent);
253 if (!se) {
254 DEBUG(0,("failed to setup SIGINT handler"));
255 talloc_free(is_parent);
256 return false;
257 }
258
259 return true;
260 }
261
262 static void winbindd_sig_hup_handler(struct tevent_context *ev,
263 struct tevent_signal *se,
264 int signum,
265 int count,
266 void *siginfo,
267 void *private_data)
268 {
269 const char *file = (const char *)private_data;
270
271 DEBUG(1,("Reloading services after SIGHUP\n"));
272 flush_caches_noinit();
273 reload_services_file(file);
274 }
275
276 bool winbindd_setup_sig_hup_handler(const char *lfile)
277 {
278 struct tevent_signal *se;
279 char *file = NULL;
280
281 if (lfile) {
282 file = talloc_strdup(winbind_event_context(),
283 lfile);
284 if (!file) {
285 return false;
286 }
287 }
288
289 se = tevent_add_signal(winbind_event_context(),
290 winbind_event_context(),
291 SIGHUP, 0,
292 winbindd_sig_hup_handler,
293 file);
294 if (!se) {
295 return false;
296 }
297
298 return true;
299 }
300
301 static void winbindd_sig_chld_handler(struct tevent_context *ev,
302 struct tevent_signal *se,
303 int signum,
304 int count,
305 void *siginfo,
306 void *private_data)
307 {
308 pid_t pid;
309
310 while ((pid = sys_waitpid(-1, NULL, WNOHANG)) > 0) {
311 winbind_child_died(pid);
312 }
313 }
314
315 static bool winbindd_setup_sig_chld_handler(void)
316 {
317 struct tevent_signal *se;
318
319 se = tevent_add_signal(winbind_event_context(),
320 winbind_event_context(),
321 SIGCHLD, 0,
322 winbindd_sig_chld_handler,
323 NULL);
324 if (!se) {
325 return false;
326 }
327
328 return true;
329 }
330
331 static void winbindd_sig_usr2_handler(struct tevent_context *ev,
332 struct tevent_signal *se,
333 int signum,
334 int count,
335 void *siginfo,
336 void *private_data)
337 {
338 winbindd_status();
339 }
340
341 static bool winbindd_setup_sig_usr2_handler(void)
342 {
343 struct tevent_signal *se;
344
345 se = tevent_add_signal(winbind_event_context(),
346 winbind_event_context(),
347 SIGUSR2, 0,
348 winbindd_sig_usr2_handler,
349 NULL);
350 if (!se) {
351 return false;
352 }
353
354 return true;
355 }
356
357 /* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
358 static void msg_reload_services(struct messaging_context *msg,
359 void *private_data,
360 uint32_t msg_type,
361 struct server_id server_id,
362 DATA_BLOB *data)
363 {
364 /* Flush various caches */
365 flush_caches();
366 reload_services_file((const char *) private_data);
367 }
368
369 /* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
370 static void msg_shutdown(struct messaging_context *msg,
371 void *private_data,
372 uint32_t msg_type,
373 struct server_id server_id,
374 DATA_BLOB *data)
375 {
376 /* only the parent waits for this message */
377 DEBUG(0,("Got shutdown message\n"));
378 terminate(true);
379 }
380
381
382 static void winbind_msg_validate_cache(struct messaging_context *msg_ctx,
383 void *private_data,
384 uint32_t msg_type,
385 struct server_id server_id,
386 DATA_BLOB *data)
387 {
388 uint8 ret;
389 pid_t child_pid;
390 NTSTATUS status;
391
392 DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
393 "message.\n"));
394
395 /*
396 * call the validation code from a child:
397 * so we don't block the main winbindd and the validation
398 * code can safely use fork/waitpid...
399 */
400 child_pid = sys_fork();
401
402 if (child_pid == -1) {
403 DEBUG(1, ("winbind_msg_validate_cache: Could not fork: %s\n",
404 strerror(errno)));
405 return;
406 }
407
408 if (child_pid != 0) {
409 /* parent */
410 DEBUG(5, ("winbind_msg_validate_cache: child created with "
411 "pid %d.\n", (int)child_pid));
412 return;
413 }
414
415 /* child */
416
417 status = winbindd_reinit_after_fork(NULL, NULL);
418 if (!NT_STATUS_IS_OK(status)) {
419 DEBUG(1, ("winbindd_reinit_after_fork failed: %s\n",
420 nt_errstr(status)));
421 _exit(0);
422 }
423
424 /* install default SIGCHLD handler: validation code uses fork/waitpid */
425 CatchSignal(SIGCHLD, SIG_DFL);
426
427 ret = (uint8)winbindd_validate_cache_nobackup();
428 DEBUG(10, ("winbindd_msg_validata_cache: got return value %d\n", ret));
429 messaging_send_buf(msg_ctx, server_id, MSG_WINBIND_VALIDATE_CACHE, &ret,
430 (size_t)1);
431 _exit(0);
432 }
433
434 static struct winbindd_dispatch_table {
435 enum winbindd_cmd cmd;
436 void (*fn)(struct winbindd_cli_state *state);
437 const char *winbindd_cmd_name;
438 } dispatch_table[] = {
439
440 /* Enumeration functions */
441
442 { WINBINDD_LIST_TRUSTDOM, winbindd_list_trusted_domains,
443 "LIST_TRUSTDOM" },
444
445 /* Miscellaneous */
446
447 { WINBINDD_INFO, winbindd_info, "INFO" },
448 { WINBINDD_INTERFACE_VERSION, winbindd_interface_version,
449 "INTERFACE_VERSION" },
450 { WINBINDD_DOMAIN_NAME, winbindd_domain_name, "DOMAIN_NAME" },
451 { WINBINDD_DOMAIN_INFO, winbindd_domain_info, "DOMAIN_INFO" },
452 { WINBINDD_DC_INFO, winbindd_dc_info, "DC_INFO" },
453 { WINBINDD_NETBIOS_NAME, winbindd_netbios_name, "NETBIOS_NAME" },
454 { WINBINDD_PRIV_PIPE_DIR, winbindd_priv_pipe_dir,
455 "WINBINDD_PRIV_PIPE_DIR" },
456
457 /* Credential cache access */
458 { WINBINDD_CCACHE_NTLMAUTH, winbindd_ccache_ntlm_auth, "NTLMAUTH" },
459 { WINBINDD_CCACHE_SAVE, winbindd_ccache_save, "CCACHE_SAVE" },
460
461 /* WINS functions */
462
463 { WINBINDD_WINS_BYNAME, winbindd_wins_byname, "WINS_BYNAME" },
464 { WINBINDD_WINS_BYIP, winbindd_wins_byip, "WINS_BYIP" },
465
466 /* End of list */
467
468 { WINBINDD_NUM_CMDS, NULL, "NONE" }
469 };
470
471 struct winbindd_async_dispatch_table {
472 enum winbindd_cmd cmd;
473 const char *cmd_name;
474 struct tevent_req *(*send_req)(TALLOC_CTX *mem_ctx,
475 struct tevent_context *ev,
476 struct winbindd_cli_state *cli,
477 struct winbindd_request *request);
478 NTSTATUS (*recv_req)(struct tevent_req *req,
479 struct winbindd_response *presp);
480 };
481
482 static struct winbindd_async_dispatch_table async_nonpriv_table[] = {
483 { WINBINDD_PING, "PING",
484 wb_ping_send, wb_ping_recv },
485 { WINBINDD_LOOKUPSID, "LOOKUPSID",
486 winbindd_lookupsid_send, winbindd_lookupsid_recv },
487 { WINBINDD_LOOKUPSIDS, "LOOKUPSIDS",
488 winbindd_lookupsids_send, winbindd_lookupsids_recv },
489 { WINBINDD_LOOKUPNAME, "LOOKUPNAME",
490 winbindd_lookupname_send, winbindd_lookupname_recv },
491 { WINBINDD_SID_TO_UID, "SID_TO_UID",
492 winbindd_sid_to_uid_send, winbindd_sid_to_uid_recv },
493 { WINBINDD_SID_TO_GID, "SID_TO_GID",
494 winbindd_sid_to_gid_send, winbindd_sid_to_gid_recv },
495 { WINBINDD_UID_TO_SID, "UID_TO_SID",
496 winbindd_uid_to_sid_send, winbindd_uid_to_sid_recv },
497 { WINBINDD_GID_TO_SID, "GID_TO_SID",
498 winbindd_gid_to_sid_send, winbindd_gid_to_sid_recv },
499 { WINBINDD_SIDS_TO_XIDS, "SIDS_TO_XIDS",
500 winbindd_sids_to_xids_send, winbindd_sids_to_xids_recv },
501 { WINBINDD_GETPWSID, "GETPWSID",
502 winbindd_getpwsid_send, winbindd_getpwsid_recv },
503 { WINBINDD_GETPWNAM, "GETPWNAM",
504 winbindd_getpwnam_send, winbindd_getpwnam_recv },
505 { WINBINDD_GETPWUID, "GETPWUID",
506 winbindd_getpwuid_send, winbindd_getpwuid_recv },
507 { WINBINDD_GETSIDALIASES, "GETSIDALIASES",
508 winbindd_getsidaliases_send, winbindd_getsidaliases_recv },
509 { WINBINDD_GETUSERDOMGROUPS, "GETUSERDOMGROUPS",
510 winbindd_getuserdomgroups_send, winbindd_getuserdomgroups_recv },
511 { WINBINDD_GETGROUPS, "GETGROUPS",
512 winbindd_getgroups_send, winbindd_getgroups_recv },
513 { WINBINDD_SHOW_SEQUENCE, "SHOW_SEQUENCE",
514 winbindd_show_sequence_send, winbindd_show_sequence_recv },
515 { WINBINDD_GETGRGID, "GETGRGID",
516 winbindd_getgrgid_send, winbindd_getgrgid_recv },
517 { WINBINDD_GETGRNAM, "GETGRNAM",
518 winbindd_getgrnam_send, winbindd_getgrnam_recv },
519 { WINBINDD_GETUSERSIDS, "GETUSERSIDS",
520 winbindd_getusersids_send, winbindd_getusersids_recv },
521 { WINBINDD_LOOKUPRIDS, "LOOKUPRIDS",
522 winbindd_lookuprids_send, winbindd_lookuprids_recv },
523 { WINBINDD_SETPWENT, "SETPWENT",
524 winbindd_setpwent_send, winbindd_setpwent_recv },
525 { WINBINDD_GETPWENT, "GETPWENT",
526 winbindd_getpwent_send, winbindd_getpwent_recv },
527 { WINBINDD_ENDPWENT, "ENDPWENT",
528 winbindd_endpwent_send, winbindd_endpwent_recv },
529 { WINBINDD_DSGETDCNAME, "DSGETDCNAME",
530 winbindd_dsgetdcname_send, winbindd_dsgetdcname_recv },
531 { WINBINDD_GETDCNAME, "GETDCNAME",
532 winbindd_getdcname_send, winbindd_getdcname_recv },
533 { WINBINDD_SETGRENT, "SETGRENT",
534 winbindd_setgrent_send, winbindd_setgrent_recv },
535 { WINBINDD_GETGRENT, "GETGRENT",
536 winbindd_getgrent_send, winbindd_getgrent_recv },
537 { WINBINDD_ENDGRENT, "ENDGRENT",
538 winbindd_endgrent_send, winbindd_endgrent_recv },
539 { WINBINDD_LIST_USERS, "LIST_USERS",
540 winbindd_list_users_send, winbindd_list_users_recv },
541 { WINBINDD_LIST_GROUPS, "LIST_GROUPS",
542 winbindd_list_groups_send, winbindd_list_groups_recv },
543 { WINBINDD_CHECK_MACHACC, "CHECK_MACHACC",
544 winbindd_check_machine_acct_send, winbindd_check_machine_acct_recv },
545 { WINBINDD_PING_DC, "PING_DC",
546 winbindd_ping_dc_send, winbindd_ping_dc_recv },
547 { WINBINDD_PAM_AUTH, "PAM_AUTH",
548 winbindd_pam_auth_send, winbindd_pam_auth_recv },
549 { WINBINDD_PAM_LOGOFF, "PAM_LOGOFF",
550 winbindd_pam_logoff_send, winbindd_pam_logoff_recv },
551 { WINBINDD_PAM_CHAUTHTOK, "PAM_CHAUTHTOK",
552 winbindd_pam_chauthtok_send, winbindd_pam_chauthtok_recv },
553 { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, "PAM_CHNG_PSWD_AUTH_CRAP",
554 winbindd_pam_chng_pswd_auth_crap_send,
555 winbindd_pam_chng_pswd_auth_crap_recv },
556
557 { 0, NULL, NULL, NULL }
558 };
559
560 static struct winbindd_async_dispatch_table async_priv_table[] = {
561 { WINBINDD_ALLOCATE_UID, "ALLOCATE_UID",
562 winbindd_allocate_uid_send, winbindd_allocate_uid_recv },
563 { WINBINDD_ALLOCATE_GID, "ALLOCATE_GID",
564 winbindd_allocate_gid_send, winbindd_allocate_gid_recv },
565 { WINBINDD_CHANGE_MACHACC, "CHANGE_MACHACC",
566 winbindd_change_machine_acct_send, winbindd_change_machine_acct_recv },
567 { WINBINDD_PAM_AUTH_CRAP, "PAM_AUTH_CRAP",
568 winbindd_pam_auth_crap_send, winbindd_pam_auth_crap_recv },
569
570 { 0, NULL, NULL, NULL }
571 };
572
573 static void wb_request_done(struct tevent_req *req);
574
575 static void process_request(struct winbindd_cli_state *state)
576 {
577 struct winbindd_dispatch_table *table = dispatch_table;
578 struct winbindd_async_dispatch_table *atable;
579
580 state->mem_ctx = talloc_named(state, 0, "winbind request");
581 if (state->mem_ctx == NULL)
582 return;
583
584 /* Remember who asked us. */
585 state->pid = state->request->pid;
586
587 state->cmd_name = "unknown request";
588 state->recv_fn = NULL;
589
590 /* Process command */
591
592 for (atable = async_nonpriv_table; atable->send_req; atable += 1) {
593 if (state->request->cmd == atable->cmd) {
594 break;
595 }
596 }
597
598 if ((atable->send_req == NULL) && state->privileged) {
599 for (atable = async_priv_table; atable->send_req;
600 atable += 1) {
601 if (state->request->cmd == atable->cmd) {
602 break;
603 }
604 }
605 }
606
607 if (atable->send_req != NULL) {
608 struct tevent_req *req;
609
610 state->cmd_name = atable->cmd_name;
611 state->recv_fn = atable->recv_req;
612
613 DEBUG(10, ("process_request: Handling async request %d:%s\n",
614 (int)state->pid, state->cmd_name));
615
616 req = atable->send_req(state->mem_ctx, winbind_event_context(),
617 state, state->request);
618 if (req == NULL) {
619 DEBUG(0, ("process_request: atable->send failed for "
620 "%s\n", atable->cmd_name));
621 request_error(state);
622 return;
623 }
624 tevent_req_set_callback(req, wb_request_done, state);
625 return;
626 }
627
628 state->response = talloc_zero(state->mem_ctx,
629 struct winbindd_response);
630 if (state->response == NULL) {
631 DEBUG(10, ("talloc failed\n"));
632 remove_client(state);
633 return;
634 }
635 state->response->result = WINBINDD_PENDING;
636 state->response->length = sizeof(struct winbindd_response);
637
638 for (table = dispatch_table; table->fn; table++) {
639 if (state->request->cmd == table->cmd) {
640 DEBUG(10,("process_request: request fn %s\n",
641 table->winbindd_cmd_name ));
642 state->cmd_name = table->winbindd_cmd_name;
643 table->fn(state);
644 break;
645 }
646 }
647
648 if (!table->fn) {
649 DEBUG(10,("process_request: unknown request fn number %d\n",
650 (int)state->request->cmd ));
651 request_error(state);
652 }
653 }
654
655 static void wb_request_done(struct tevent_req *req)
656 {
657 struct winbindd_cli_state *state = tevent_req_callback_data(
658 req, struct winbindd_cli_state);
659 NTSTATUS status;
660
661 state->response = talloc_zero(state->mem_ctx,
662 struct winbindd_response);
663 if (state->response == NULL) {
664 DEBUG(0, ("wb_request_done[%d:%s]: talloc_zero failed - removing client\n",
665 (int)state->pid, state->cmd_name));
666 remove_client(state);
667 return;
668 }
669 state->response->result = WINBINDD_PENDING;
670 state->response->length = sizeof(struct winbindd_response);
671
672 status = state->recv_fn(req, state->response);
673 TALLOC_FREE(req);
674
675 DEBUG(10,("wb_request_done[%d:%s]: %s\n",
676 (int)state->pid, state->cmd_name, nt_errstr(status)));
677
678 if (!NT_STATUS_IS_OK(status)) {
679 request_error(state);
680 return;
681 }
682 request_ok(state);
683 }
684
685 /*
686 * This is the main event loop of winbind requests. It goes through a
687 * state-machine of 3 read/write requests, 4 if you have extra data to send.
688 *
689 * An idle winbind client has a read request of 4 bytes outstanding,
690 * finalizing function is request_len_recv, checking the length. request_recv
691 * then processes the packet. The processing function then at some point has
692 * to call request_finished which schedules sending the response.
693 */
694
695 static void request_finished(struct winbindd_cli_state *state);
696
697 static void winbind_client_request_read(struct tevent_req *req);
698 static void winbind_client_response_written(struct tevent_req *req);
699
700 static void request_finished(struct winbindd_cli_state *state)
701 {
702 struct tevent_req *req;
703
704 TALLOC_FREE(state->request);
705
706 req = wb_resp_write_send(state, winbind_event_context(),
707 state->out_queue, state->sock,
708 state->response);
709 if (req == NULL) {
710 DEBUG(10,("request_finished[%d:%s]: wb_resp_write_send() failed\n",
711 (int)state->pid, state->cmd_name));
712 remove_client(state);
713 return;
714 }
715 tevent_req_set_callback(req, winbind_client_response_written, state);
716 }
717
718 static void winbind_client_response_written(struct tevent_req *req)
719 {
720 struct winbindd_cli_state *state = tevent_req_callback_data(
721 req, struct winbindd_cli_state);
722 ssize_t ret;
723 int err;
724
725 ret = wb_resp_write_recv(req, &err);
726 TALLOC_FREE(req);
727 if (ret == -1) {
728 close(state->sock);
729 state->sock = -1;
730 DEBUG(2, ("Could not write response[%d:%s] to client: %s\n",
731 (int)state->pid, state->cmd_name, strerror(err)));
732 remove_client(state);
733 return;
734 }
735
736 DEBUG(10,("winbind_client_response_written[%d:%s]: delivered response "
737 "to client\n", (int)state->pid, state->cmd_name));
738
739 TALLOC_FREE(state->mem_ctx);
740 state->response = NULL;
741 state->cmd_name = "no request";
742 state->recv_fn = NULL;
743
744 req = wb_req_read_send(state, winbind_event_context(), state->sock,
745 WINBINDD_MAX_EXTRA_DATA);
746 if (req == NULL) {
747 remove_client(state);
748 return;
749 }
750 tevent_req_set_callback(req, winbind_client_request_read, state);
751 }
752
753 void request_error(struct winbindd_cli_state *state)
754 {
755 SMB_ASSERT(state->response->result == WINBINDD_PENDING);
756 state->response->result = WINBINDD_ERROR;
757 request_finished(state);
758 }
759
760 void request_ok(struct winbindd_cli_state *state)
761 {
762 SMB_ASSERT(state->response->result == WINBINDD_PENDING);
763 state->response->result = WINBINDD_OK;
764 request_finished(state);
765 }
766
767 /* Process a new connection by adding it to the client connection list */
768
769 static void new_connection(int listen_sock, bool privileged)
770 {
771 struct sockaddr_un sunaddr;
772 struct winbindd_cli_state *state;
773 struct tevent_req *req;
774 socklen_t len;
775 int sock;
776
777 /* Accept connection */
778
779 len = sizeof(sunaddr);
780
781 sock = accept(listen_sock, (struct sockaddr *)(void *)&sunaddr, &len);
782
783 if (sock == -1) {
784 if (errno != EINTR) {
785 DEBUG(0, ("Faild to accept socket - %s\n",
786 strerror(errno)));
787 }
788 return;
789 }
790
791 DEBUG(6,("accepted socket %d\n", sock));
792
793 /* Create new connection structure */
794
795 if ((state = TALLOC_ZERO_P(NULL, struct winbindd_cli_state)) == NULL) {
796 close(sock);
797 return;
798 }
799
800 state->sock = sock;
801
802 state->out_queue = tevent_queue_create(state, "winbind client reply");
803 if (state->out_queue == NULL) {
804 close(sock);
805 TALLOC_FREE(state);
806 return;
807 }
808
809 state->last_access = time(NULL);
810
811 state->privileged = privileged;
812
813 req = wb_req_read_send(state, winbind_event_context(), state->sock,
814 WINBINDD_MAX_EXTRA_DATA);
815 if (req == NULL) {
816 TALLOC_FREE(state);
817 close(sock);
818 return;
819 }
820 tevent_req_set_callback(req, winbind_client_request_read, state);
821
822 /* Add to connection list */
823
824 winbindd_add_client(state);
825 }
826
827 static void winbind_client_request_read(struct tevent_req *req)
828 {
829 struct winbindd_cli_state *state = tevent_req_callback_data(
830 req, struct winbindd_cli_state);
831 ssize_t ret;
832 int err;
833
834 ret = wb_req_read_recv(req, state, &state->request, &err);
835 TALLOC_FREE(req);
836 if (ret == -1) {
837 if (err == EPIPE) {
838 DEBUG(6, ("closing socket %d, client exited\n",
839 state->sock));
840 } else {
841 DEBUG(2, ("Could not read client request from fd %d: "
842 "%s\n", state->sock, strerror(err)));
843 }
844 close(state->sock);
845 state->sock = -1;
846 remove_client(state);
847 return;
848 }
849 process_request(state);
850 }
851
852 /* Remove a client connection from client connection list */
853
854 static void remove_client(struct winbindd_cli_state *state)
855 {
856 char c = 0;
857 int nwritten;
858
859 /* It's a dead client - hold a funeral */
860
861 if (state == NULL) {
862 return;
863 }
864
865 if (state->sock != -1) {
866 /* tell client, we are closing ... */
867 nwritten = write(state->sock, &c, sizeof(c));
868 if (nwritten == -1) {
869 DEBUG(2, ("final write to client failed: %s\n",
870 strerror(errno)));
871 }
872
873 /* Close socket */
874
875 close(state->sock);
876 state->sock = -1;
877 }
878
879 TALLOC_FREE(state->mem_ctx);
880
881 /* Remove from list and free */
882
883 winbindd_remove_client(state);
884 TALLOC_FREE(state);
885 }
886
887 /* Is a client idle? */
888
889 static bool client_is_idle(struct winbindd_cli_state *state) {
890 return (state->response == NULL &&
891 !state->pwent_state && !state->grent_state);
892 }
893
894 /* Shutdown client connection which has been idle for the longest time */
895
896 static bool remove_idle_client(void)
897 {
898 struct winbindd_cli_state *state, *remove_state = NULL;
899 time_t last_access = 0;
900 int nidle = 0;
901
902 for (state = winbindd_client_list(); state; state = state->next) {
903 if (client_is_idle(state)) {
904 nidle++;
905 if (!last_access || state->last_access < last_access) {
906 last_access = state->last_access;
907 remove_state = state;
908 }
909 }
910 }
911
912 if (remove_state) {
913 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
914 nidle, remove_state->sock, (unsigned int)remove_state->pid));
915 remove_client(remove_state);
916 return True;
917 }
918
919 return False;
920 }
921
922 struct winbindd_listen_state {
923 bool privileged;
924 int fd;
925 };
926
927 static void winbindd_listen_fde_handler(struct tevent_context *ev,
928 struct tevent_fd *fde,
929 uint16_t flags,
930 void *private_data)
931 {
932 struct winbindd_listen_state *s = talloc_get_type_abort(private_data,
933 struct winbindd_listen_state);
934
935 while (winbindd_num_clients() > lp_winbind_max_clients() - 1) {
936 DEBUG(5,("winbindd: Exceeding %d client "
937 "connections, removing idle "
938 "connection.\n", lp_winbind_max_clients()));
939 if (!remove_idle_client()) {
940 DEBUG(0,("winbindd: Exceeding %d "
941 "client connections, no idle "
942 "connection found\n",
943 lp_winbind_max_clients()));
944 break;
945 }
946 }
947 new_connection(s->fd, s->privileged);
948 }
949
950 /*
951 * Winbindd socket accessor functions
952 */
953
954 const char *get_winbind_pipe_dir(void)
955 {
956 return lp_parm_const_string(-1, "winbindd", "socket dir", WINBINDD_SOCKET_DIR);
957 }
958
959 char *get_winbind_priv_pipe_dir(void)
960 {
961 return lock_path(WINBINDD_PRIV_SOCKET_SUBDIR);
962 }
963
964 static bool winbindd_setup_listeners(void)
965 {
966 struct winbindd_listen_state *pub_state = NULL;
967 struct winbindd_listen_state *priv_state = NULL;
968 struct tevent_fd *fde;
969
970 pub_state = talloc(winbind_event_context(),
971 struct winbindd_listen_state);
972 if (!pub_state) {
973 goto failed;
974 }
975
976 pub_state->privileged = false;
977 pub_state->fd = create_pipe_sock(
978 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME, 0755);
979 if (pub_state->fd == -1) {
980 goto failed;
981 }
982
983 fde = tevent_add_fd(winbind_event_context(), pub_state, pub_state->fd,
984 TEVENT_FD_READ, winbindd_listen_fde_handler,
985 pub_state);
986 if (fde == NULL) {
987 close(pub_state->fd);
988 goto failed;
989 }
990 tevent_fd_set_auto_close(fde);
991
992 priv_state = talloc(winbind_event_context(),
993 struct winbindd_listen_state);
994 if (!priv_state) {
995 goto failed;
996 }
997
998 priv_state->privileged = true;
999 priv_state->fd = create_pipe_sock(
1000 get_winbind_priv_pipe_dir(), WINBINDD_SOCKET_NAME, 0750);
1001 if (priv_state->fd == -1) {
1002 goto failed;
1003 }
1004
1005 fde = tevent_add_fd(winbind_event_context(), priv_state,
1006 priv_state->fd, TEVENT_FD_READ,
1007 winbindd_listen_fde_handler, priv_state);
1008 if (fde == NULL) {
1009 close(priv_state->fd);
1010 goto failed;
1011 }
1012 tevent_fd_set_auto_close(fde);
1013
1014 return true;
1015 failed:
1016 TALLOC_FREE(pub_state);
1017 TALLOC_FREE(priv_state);
1018 return false;
1019 }
1020
1021 bool winbindd_use_idmap_cache(void)
1022 {
1023 return !opt_nocache;
1024 }
1025
1026 bool winbindd_use_cache(void)
1027 {
1028 return !opt_nocache;
1029 }
1030
1031 void winbindd_register_handlers(void)
1032 {
1033 /* Setup signal handlers */
1034
1035 if (!winbindd_setup_sig_term_handler(true))
1036 exit(1);
1037 if (!winbindd_setup_sig_hup_handler(NULL))
1038 exit(1);
1039 if (!winbindd_setup_sig_chld_handler())
1040 exit(1);
1041 if (!winbindd_setup_sig_usr2_handler())
1042 exit(1);
1043
1044 CatchSignal(SIGPIPE, SIG_IGN); /* Ignore sigpipe */
1045
1046 /*
1047 * Ensure all cache and idmap caches are consistent
1048 * and initialized before we startup.
1049 */
1050 if (!winbindd_cache_validate_and_initialize()) {
1051 exit(1);
1052 }
1053
1054 /* get broadcast messages */
1055
1056 if (!serverid_register(procid_self(),
1057 FLAG_MSG_GENERAL|FLAG_MSG_DBWRAP)) {
1058 DEBUG(1, ("Could not register myself in serverid.tdb\n"));
1059 exit(1);
1060 }
1061
1062 /* React on 'smbcontrol winbindd reload-config' in the same way
1063 as to SIGHUP signal */
1064 messaging_register(winbind_messaging_context(), NULL,
1065 MSG_SMB_CONF_UPDATED, msg_reload_services);
1066 messaging_register(winbind_messaging_context(), NULL,
1067 MSG_SHUTDOWN, msg_shutdown);
1068
1069 /* Handle online/offline messages. */
1070 messaging_register(winbind_messaging_context(), NULL,
1071 MSG_WINBIND_OFFLINE, winbind_msg_offline);
1072 messaging_register(winbind_messaging_context(), NULL,
1073 MSG_WINBIND_ONLINE, winbind_msg_online);
1074 messaging_register(winbind_messaging_context(), NULL,
1075 MSG_WINBIND_ONLINESTATUS, winbind_msg_onlinestatus);
1076
1077 messaging_register(winbind_messaging_context(), NULL,
1078 MSG_DUMP_EVENT_LIST, winbind_msg_dump_event_list);
1079
1080 messaging_register(winbind_messaging_context(), NULL,
1081 MSG_WINBIND_VALIDATE_CACHE,
1082 winbind_msg_validate_cache);
1083
1084 messaging_register(winbind_messaging_context(), NULL,
1085 MSG_WINBIND_DUMP_DOMAIN_LIST,
1086 winbind_msg_dump_domain_list);
1087
1088 messaging_register(winbind_messaging_context(), NULL,
1089 MSG_WINBIND_IP_DROPPED,
1090 winbind_msg_ip_dropped_parent);
1091
1092 /* Register handler for MSG_DEBUG. */
1093 messaging_register(winbind_messaging_context(), NULL,
1094 MSG_DEBUG,
1095 winbind_msg_debug);
1096
1097 netsamlogon_cache_init(); /* Non-critical */
1098
1099 /* clear the cached list of trusted domains */
1100
1101 wcache_tdc_clear();
1102
1103 if (!init_domain_list()) {
1104 DEBUG(0,("unable to initialize domain list\n"));
1105 exit(1);
1106 }
1107
1108 init_idmap_child();
1109 init_locator_child();
1110
1111 smb_nscd_flush_user_cache();
1112 smb_nscd_flush_group_cache();
1113
1114 if (lp_allow_trusted_domains()) {
1115 if (tevent_add_timer(winbind_event_context(), NULL, timeval_zero(),
1116 rescan_trusted_domains, NULL) == NULL) {
1117 DEBUG(0, ("Could not trigger rescan_trusted_domains()\n"));
1118 exit(1);
1119 }
1120 }
1121
1122 }
1123
1124 struct winbindd_addrchanged_state {
1125 struct addrchange_context *ctx;
1126 struct tevent_context *ev;
1127 struct messaging_context *msg_ctx;
1128 };
1129
1130 static void winbindd_addr_changed(struct tevent_req *req);
1131
1132 static void winbindd_init_addrchange(TALLOC_CTX *mem_ctx,
1133 struct tevent_context *ev,
1134 struct messaging_context *msg_ctx)
1135 {
1136 struct winbindd_addrchanged_state *state;
1137 struct tevent_req *req;
1138 NTSTATUS status;
1139
1140 state = talloc(mem_ctx, struct winbindd_addrchanged_state);
1141 if (state == NULL) {
1142 DEBUG(10, ("talloc failed\n"));
1143 return;
1144 }
1145 state->ev = ev;
1146 state->msg_ctx = msg_ctx;
1147
1148 status = addrchange_context_create(state, &state->ctx);
1149 if (!NT_STATUS_IS_OK(status)) {
1150 DEBUG(10, ("addrchange_context_create failed: %s\n",
1151 nt_errstr(status)));
1152 TALLOC_FREE(state);
1153 return;
1154 }
1155 req = addrchange_send(state, ev, state->ctx);
1156 if (req == NULL) {
1157 DEBUG(0, ("addrchange_send failed\n"));
1158 TALLOC_FREE(state);
1159 return;
1160 }
1161 tevent_req_set_callback(req, winbindd_addr_changed, state);
1162 }
1163
1164 static void winbindd_addr_changed(struct tevent_req *req)
1165 {
1166 struct winbindd_addrchanged_state *state = tevent_req_callback_data(
1167 req, struct winbindd_addrchanged_state);
1168 enum addrchange_type type;
1169 struct sockaddr_storage addr;
1170 NTSTATUS status;
1171
1172 status = addrchange_recv(req, &type, &addr);
1173 TALLOC_FREE(req);
1174 if (!NT_STATUS_IS_OK(status)) {
1175 DEBUG(10, ("addrchange_recv failed: %s, stop listening\n",
1176 nt_errstr(status)));
1177 TALLOC_FREE(state);
1178 return;
1179 }
1180 if (type == ADDRCHANGE_DEL) {
1181 char addrstr[INET6_ADDRSTRLEN];
1182 DATA_BLOB blob;
1183
1184 print_sockaddr(addrstr, sizeof(addrstr), &addr);
1185
1186 DEBUG(3, ("winbindd: kernel (AF_NETLINK) dropped ip %s\n",
1187 addrstr));
1188
1189 blob = data_blob_const(addrstr, strlen(addrstr)+1);
1190
1191 status = messaging_send(state->msg_ctx,
1192 messaging_server_id(state->msg_ctx),
1193 MSG_WINBIND_IP_DROPPED, &blob);
1194 if (!NT_STATUS_IS_OK(status)) {
1195 DEBUG(10, ("messaging_send failed: %s - ignoring\n",
1196 nt_errstr(status)));
1197 }
1198 }
1199 req = addrchange_send(state, state->ev, state->ctx);
1200 if (req == NULL) {
1201 DEBUG(0, ("addrchange_send failed\n"));
1202 TALLOC_FREE(state);
1203 return;
1204 }
1205 tevent_req_set_callback(req, winbindd_addr_changed, state);
1206 }
1207
1208 /* Main function */
1209
1210 int main(int argc, char **argv, char **envp)
1211 {
1212 static bool is_daemon = False;
1213 static bool Fork = True;
1214 static bool log_stdout = False;
1215 static bool no_process_group = False;
1216 enum {
1217 OPT_DAEMON = 1000,
1218 OPT_FORK,
1219 OPT_NO_PROCESS_GROUP,
1220 OPT_LOG_STDOUT
1221 };
1222 struct poptOption long_options[] = {
1223 POPT_AUTOHELP
1224 { "stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1225 { "foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Daemon in foreground mode" },
1226 { "no-process-group", 0, POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1227 { "daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1228 { "interactive", 'i', POPT_ARG_NONE, NULL, 'i', "Interactive mode" },
1229 { "no-caching", 'n', POPT_ARG_NONE, NULL, 'n', "Disable caching" },
1230 POPT_COMMON_SAMBA
1231 POPT_TABLEEND
1232 };
1233 poptContext pc;
1234 int opt;
1235 TALLOC_CTX *frame;
1236 NTSTATUS status;
1237
1238 /*
1239 * Do this before any other talloc operation
1240 */
1241 talloc_enable_null_tracking();
1242 frame = talloc_stackframe();
1243
1244 /* glibc (?) likes to print "User defined signal 1" and exit if a
1245 SIGUSR[12] is received before a handler is installed */
1246
1247 CatchSignal(SIGUSR1, SIG_IGN);
1248 CatchSignal(SIGUSR2, SIG_IGN);
1249
1250 fault_setup((void (*)(void *))fault_quit );
1251 dump_core_setup("winbindd");
1252
1253 load_case_tables();
1254
1255 /* Initialise for running in non-root mode */
1256
1257 sec_init();
1258
1259 set_remote_machine_name("winbindd", False);
1260
1261 /* Set environment variable so we don't recursively call ourselves.
1262 This may also be useful interactively. */
1263
1264 if ( !winbind_off() ) {
1265 DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
1266 exit(1);
1267 }
1268
1269 /* Initialise samba/rpc client stuff */
1270
1271 pc = poptGetContext("winbindd", argc, (const char **)argv, long_options, 0);
1272
1273 while ((opt = poptGetNextOpt(pc)) != -1) {
1274 switch (opt) {
1275 /* Don't become a daemon */
1276 case OPT_DAEMON:
1277 is_daemon = True;
1278 break;
1279 case 'i':
1280 interactive = True;
1281 log_stdout = True;
1282 Fork = False;
1283 break;
1284 case OPT_FORK:
1285 Fork = false;
1286 break;
1287 case OPT_NO_PROCESS_GROUP:
1288 no_process_group = true;
1289 break;
1290 case OPT_LOG_STDOUT:
1291 log_stdout = true;
1292 break;
1293 case 'n':
1294 opt_nocache = true;
1295 break;
1296 default:
1297 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1298 poptBadOption(pc, 0), poptStrerror(opt));
1299 poptPrintUsage(pc, stderr, 0);
1300 exit(1);
1301 }
1302 }
1303
1304 if (is_daemon && interactive) {
1305 d_fprintf(stderr,"\nERROR: "
1306 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
1307 poptPrintUsage(pc, stderr, 0);
1308 exit(1);
1309 }
1310
1311 if (log_stdout && Fork) {
1312 d_fprintf(stderr, "\nERROR: "
1313 "Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n\n");
1314 poptPrintUsage(pc, stderr, 0);
1315 exit(1);
1316 }
1317
1318 poptFreeContext(pc);
1319
1320 if (!override_logfile) {
1321 char *lfile = NULL;
1322 if (asprintf(&lfile,"%s/log.winbindd",
1323 get_dyn_LOGFILEBASE()) > 0) {
1324 lp_set_logfile(lfile);
1325 SAFE_FREE(lfile);
1326 }
1327 }
1328 if (log_stdout) {
1329 setup_logging("winbindd", DEBUG_STDOUT);
1330 } else {
1331 setup_logging("winbindd", DEBUG_FILE);
1332 }
1333 reopen_logs();
1334
1335 DEBUG(0,("winbindd version %s started.\n", samba_version_string()));
1336 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1337
1338 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1339 DEBUG(0, ("error opening config file\n"));
1340 exit(1);
1341 }
1342
1343 /* Initialise messaging system */
1344
1345 if (winbind_messaging_context() == NULL) {
1346 exit(1);
1347 }
1348
1349 if (!reload_services_file(NULL)) {
1350 DEBUG(0, ("error opening config file\n"));
1351 exit(1);
1352 }
1353
1354 if (!directory_exist(lp_lockdir())) {
1355 mkdir(lp_lockdir(), 0755);
1356 }
1357
1358 /* Setup names. */
1359
1360 if (!init_names())
1361 exit(1);
1362
1363 load_interfaces();
1364
1365 if (!secrets_init()) {
1366
1367 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1368 return False;
1369 }
1370
1371 /* Unblock all signals we are interested in as they may have been
1372 blocked by the parent process. */
1373
1374 BlockSignals(False, SIGINT);
1375 BlockSignals(False, SIGQUIT);
1376 BlockSignals(False, SIGTERM);
1377 BlockSignals(False, SIGUSR1);
1378 BlockSignals(False, SIGUSR2);
1379 BlockSignals(False, SIGHUP);
1380 BlockSignals(False, SIGCHLD);
1381
1382 if (!interactive)
1383 become_daemon(Fork, no_process_group, log_stdout);
1384
1385 pidfile_create("winbindd");
1386
1387 #if HAVE_SETPGID
1388 /*
1389 * If we're interactive we want to set our own process group for
1390 * signal management.
1391 */
1392 if (interactive && !no_process_group)
1393 setpgid( (pid_t)0, (pid_t)0);
1394 #endif
1395
1396 TimeInit();
1397
1398 /* Don't use winbindd_reinit_after_fork here as
1399 * we're just starting up and haven't created any
1400 * winbindd-specific resources we must free yet. JRA.
1401 */
1402
1403 status = reinit_after_fork(winbind_messaging_context(),
1404 winbind_event_context(),
1405 procid_self(), false);
1406 if (!NT_STATUS_IS_OK(status)) {
1407 DEBUG(0,("reinit_after_fork() failed\n"));
1408 exit(1);
1409 }
1410
1411 winbindd_register_handlers();
1412
1413 status = init_system_info();
1414 if (!NT_STATUS_IS_OK(status)) {
1415 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1416 nt_errstr(status)));
1417 exit(1);
1418 }
1419
1420 rpc_lsarpc_init(NULL);
1421 rpc_samr_init(NULL);
1422
1423 winbindd_init_addrchange(NULL, winbind_event_context(),
1424 winbind_messaging_context());
1425
1426 /* setup listen sockets */
1427
1428 if (!winbindd_setup_listeners()) {
1429 DEBUG(0,("winbindd_setup_listeners() failed\n"));
1430 exit(1);
1431 }
1432
1433 TALLOC_FREE(frame);
1434 /* Loop waiting for requests */
1435 while (1) {
1436 frame = talloc_stackframe();
1437
1438 if (tevent_loop_once(winbind_event_context()) == -1) {
1439 DEBUG(1, ("tevent_loop_once() failed: %s\n",
1440 strerror(errno)));
1441 return 1;
1442 }
1443
1444 TALLOC_FREE(frame);
1445 }
1446
1447 return 0;
1448 }
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