source: trunk/server/source3/winbindd/winbindd.c

Last change on this file was 978, checked in by Silvan Scherrer, 9 years ago

Samba server: remove exceptq handling, as now globaly installed when using libcx. And libcx is mandatory for samba
File size: 37.5 KB
RevLine 
[862]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
40#undef DBGC_CLASS
41#define DBGC_CLASS DBGC_WINBIND
42
43static bool client_is_idle(struct winbindd_cli_state *state);
44static void remove_client(struct winbindd_cli_state *state);
45
46static bool opt_nocache = False;
47static bool interactive = False;
48
49extern bool override_logfile;
50
51struct messaging_context *winbind_messaging_context(void)
52{
53 struct messaging_context *msg_ctx = server_messaging_context();
54 if (likely(msg_ctx != NULL)) {
55 return msg_ctx;
56 }
57 smb_panic("Could not init winbindd's messaging context.\n");
58 return NULL;
59}
60
61/* Reload configuration */
62
63static bool reload_services_file(const char *lfile)
64{
65 bool ret;
66
67 if (lp_loaded()) {
68 char *fname = lp_configfile();
69
70 if (file_exist(fname) && !strcsequal(fname,get_dyn_CONFIGFILE())) {
71 set_dyn_CONFIGFILE(fname);
72 }
73 TALLOC_FREE(fname);
74 }
75
76 /* if this is a child, restore the logfile to the special
77 name - <domain>, idmap, etc. */
78 if (lfile && *lfile) {
79 lp_set_logfile(lfile);
80 }
81
82 reopen_logs();
83 ret = lp_load(get_dyn_CONFIGFILE(),False,False,True,True);
84
85 reopen_logs();
86 load_interfaces();
87
88 return(ret);
89}
90
91
92/**************************************************************************** **
93 Handle a fault..
94 **************************************************************************** */
95
96static void fault_quit(void)
97{
98 dump_core();
99}
100
101static void winbindd_status(void)
102{
103 struct winbindd_cli_state *tmp;
104
105 DEBUG(0, ("winbindd status:\n"));
106
107 /* Print client state information */
108
109 DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
110
111 if (DEBUGLEVEL >= 2 && winbindd_num_clients()) {
112 DEBUG(2, ("\tclient list:\n"));
113 for(tmp = winbindd_client_list(); tmp; tmp = tmp->next) {
114 DEBUGADD(2, ("\t\tpid %lu, sock %d (%s)\n",
115 (unsigned long)tmp->pid, tmp->sock,
116 client_is_idle(tmp) ? "idle" : "active"));
117 }
118 }
119}
120
121/* Flush client cache */
122
123static void flush_caches(void)
124{
125 /* We need to invalidate cached user list entries on a SIGHUP
126 otherwise cached access denied errors due to restrict anonymous
127 hang around until the sequence number changes. */
128
129 if (!wcache_invalidate_cache()) {
130 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
131 if (!winbindd_cache_validate_and_initialize()) {
132 exit(1);
133 }
134 }
135}
136
137static void flush_caches_noinit(void)
138{
139 /*
140 * We need to invalidate cached user list entries on a SIGHUP
141 * otherwise cached access denied errors due to restrict anonymous
142 * hang around until the sequence number changes.
143 * NB
144 * Skip uninitialized domains when flush cache.
145 * If domain is not initialized, it means it is never
146 * used or never become online. look, wcache_invalidate_cache()
147 * -> get_cache() -> init_dc_connection(). It causes a lot of traffic
148 * for unused domains and large traffic for primay domain's DC if there
149 * are many domains..
150 */
151
152 if (!wcache_invalidate_cache_noinit()) {
153 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
154 if (!winbindd_cache_validate_and_initialize()) {
155 exit(1);
156 }
157 }
158}
159
160/* Handle the signal by unlinking socket and exiting */
161
162static void terminate(bool is_parent)
163{
164 if (is_parent) {
165 /* When parent goes away we should
166 * remove the socket file. Not so
167 * when children terminate.
168 */
169 char *path = NULL;
170
171 if (asprintf(&path, "%s/%s",
172 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME) > 0) {
173 unlink(path);
174 SAFE_FREE(path);
175 }
176 }
177
178 idmap_close();
179
180 trustdom_cache_shutdown();
181
182 gencache_stabilize();
183
184#if 0
185 if (interactive) {
186 TALLOC_CTX *mem_ctx = talloc_init("end_description");
187 char *description = talloc_describe_all(mem_ctx);
188
189 DEBUG(3, ("tallocs left:\n%s\n", description));
190 talloc_destroy(mem_ctx);
191 }
192#endif
193
194 if (is_parent) {
195 serverid_deregister(procid_self());
196 pidfile_unlink();
197 }
198
199 exit(0);
200}
201
202static void winbindd_sig_term_handler(struct tevent_context *ev,
203 struct tevent_signal *se,
204 int signum,
205 int count,
206 void *siginfo,
207 void *private_data)
208{
209 bool *is_parent = talloc_get_type_abort(private_data, bool);
210
211 DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
212 signum, (int)*is_parent));
213 terminate(*is_parent);
214}
215
216bool winbindd_setup_sig_term_handler(bool parent)
217{
218 struct tevent_signal *se;
219 bool *is_parent;
220
221 is_parent = talloc(winbind_event_context(), bool);
222 if (!is_parent) {
223 return false;
224 }
225
226 *is_parent = parent;
227
228 se = tevent_add_signal(winbind_event_context(),
229 is_parent,
230 SIGTERM, 0,
231 winbindd_sig_term_handler,
232 is_parent);
233 if (!se) {
234 DEBUG(0,("failed to setup SIGTERM handler"));
235 talloc_free(is_parent);
236 return false;
237 }
238
239 se = tevent_add_signal(winbind_event_context(),
240 is_parent,
241 SIGINT, 0,
242 winbindd_sig_term_handler,
243 is_parent);
244 if (!se) {
245 DEBUG(0,("failed to setup SIGINT handler"));
246 talloc_free(is_parent);
247 return false;
248 }
249
250 se = tevent_add_signal(winbind_event_context(),
251 is_parent,
252 SIGQUIT, 0,
253 winbindd_sig_term_handler,
254 is_parent);
255 if (!se) {
256 DEBUG(0,("failed to setup SIGINT handler"));
257 talloc_free(is_parent);
258 return false;
259 }
260
261 return true;
262}
263
264static void winbindd_sig_hup_handler(struct tevent_context *ev,
265 struct tevent_signal *se,
266 int signum,
267 int count,
268 void *siginfo,
269 void *private_data)
270{
271 const char *file = (const char *)private_data;
272
273 DEBUG(1,("Reloading services after SIGHUP\n"));
274 flush_caches_noinit();
275 reload_services_file(file);
276}
277
278bool winbindd_setup_sig_hup_handler(const char *lfile)
279{
280 struct tevent_signal *se;
281 char *file = NULL;
282
283 if (lfile) {
284 file = talloc_strdup(winbind_event_context(),
285 lfile);
286 if (!file) {
287 return false;
288 }
289 }
290
291 se = tevent_add_signal(winbind_event_context(),
292 winbind_event_context(),
293 SIGHUP, 0,
294 winbindd_sig_hup_handler,
295 file);
296 if (!se) {
297 return false;
298 }
299
300 return true;
301}
302
303static void winbindd_sig_chld_handler(struct tevent_context *ev,
304 struct tevent_signal *se,
305 int signum,
306 int count,
307 void *siginfo,
308 void *private_data)
309{
310 pid_t pid;
311
312 while ((pid = sys_waitpid(-1, NULL, WNOHANG)) > 0) {
313 winbind_child_died(pid);
314 }
315}
316
317static bool winbindd_setup_sig_chld_handler(void)
318{
319 struct tevent_signal *se;
320
321 se = tevent_add_signal(winbind_event_context(),
322 winbind_event_context(),
323 SIGCHLD, 0,
324 winbindd_sig_chld_handler,
325 NULL);
326 if (!se) {
327 return false;
328 }
329
330 return true;
331}
332
333static void winbindd_sig_usr2_handler(struct tevent_context *ev,
334 struct tevent_signal *se,
335 int signum,
336 int count,
337 void *siginfo,
338 void *private_data)
339{
340 winbindd_status();
341}
342
343static bool winbindd_setup_sig_usr2_handler(void)
344{
345 struct tevent_signal *se;
346
347 se = tevent_add_signal(winbind_event_context(),
348 winbind_event_context(),
349 SIGUSR2, 0,
350 winbindd_sig_usr2_handler,
351 NULL);
352 if (!se) {
353 return false;
354 }
355
356 return true;
357}
358
359/* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
360static void msg_reload_services(struct messaging_context *msg,
361 void *private_data,
362 uint32_t msg_type,
363 struct server_id server_id,
364 DATA_BLOB *data)
365{
366 /* Flush various caches */
367 flush_caches();
368 reload_services_file((const char *) private_data);
369}
370
371/* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
372static void msg_shutdown(struct messaging_context *msg,
373 void *private_data,
374 uint32_t msg_type,
375 struct server_id server_id,
376 DATA_BLOB *data)
377{
378 /* only the parent waits for this message */
379 DEBUG(0,("Got shutdown message\n"));
380 terminate(true);
381}
382
383
384static void winbind_msg_validate_cache(struct messaging_context *msg_ctx,
385 void *private_data,
386 uint32_t msg_type,
387 struct server_id server_id,
388 DATA_BLOB *data)
389{
390 uint8 ret;
391 pid_t child_pid;
392 NTSTATUS status;
393
394 DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
395 "message.\n"));
396
397 /*
398 * call the validation code from a child:
399 * so we don't block the main winbindd and the validation
400 * code can safely use fork/waitpid...
401 */
402 child_pid = sys_fork();
403
404 if (child_pid == -1) {
405 DEBUG(1, ("winbind_msg_validate_cache: Could not fork: %s\n",
406 strerror(errno)));
407 return;
408 }
409
410 if (child_pid != 0) {
411 /* parent */
412 DEBUG(5, ("winbind_msg_validate_cache: child created with "
413 "pid %d.\n", (int)child_pid));
414 return;
415 }
416
417 /* child */
418
419 status = winbindd_reinit_after_fork(NULL, NULL);
420 if (!NT_STATUS_IS_OK(status)) {
421 DEBUG(1, ("winbindd_reinit_after_fork failed: %s\n",
422 nt_errstr(status)));
423 _exit(0);
424 }
425
426 /* install default SIGCHLD handler: validation code uses fork/waitpid */
427 CatchSignal(SIGCHLD, SIG_DFL);
428
429 ret = (uint8)winbindd_validate_cache_nobackup();
430 DEBUG(10, ("winbindd_msg_validata_cache: got return value %d\n", ret));
431 messaging_send_buf(msg_ctx, server_id, MSG_WINBIND_VALIDATE_CACHE, &ret,
432 (size_t)1);
433 _exit(0);
434}
435
436static struct winbindd_dispatch_table {
437 enum winbindd_cmd cmd;
438 void (*fn)(struct winbindd_cli_state *state);
439 const char *winbindd_cmd_name;
440} dispatch_table[] = {
441
442 /* Enumeration functions */
443
444 { WINBINDD_LIST_TRUSTDOM, winbindd_list_trusted_domains,
445 "LIST_TRUSTDOM" },
446
447 /* Miscellaneous */
448
449 { WINBINDD_INFO, winbindd_info, "INFO" },
450 { WINBINDD_INTERFACE_VERSION, winbindd_interface_version,
451 "INTERFACE_VERSION" },
452 { WINBINDD_DOMAIN_NAME, winbindd_domain_name, "DOMAIN_NAME" },
453 { WINBINDD_DOMAIN_INFO, winbindd_domain_info, "DOMAIN_INFO" },
454 { WINBINDD_DC_INFO, winbindd_dc_info, "DC_INFO" },
455 { WINBINDD_NETBIOS_NAME, winbindd_netbios_name, "NETBIOS_NAME" },
456 { WINBINDD_PRIV_PIPE_DIR, winbindd_priv_pipe_dir,
457 "WINBINDD_PRIV_PIPE_DIR" },
458
459 /* Credential cache access */
460 { WINBINDD_CCACHE_NTLMAUTH, winbindd_ccache_ntlm_auth, "NTLMAUTH" },
461 { WINBINDD_CCACHE_SAVE, winbindd_ccache_save, "CCACHE_SAVE" },
462
463 /* WINS functions */
464
465 { WINBINDD_WINS_BYNAME, winbindd_wins_byname, "WINS_BYNAME" },
466 { WINBINDD_WINS_BYIP, winbindd_wins_byip, "WINS_BYIP" },
467
468 /* End of list */
469
470 { WINBINDD_NUM_CMDS, NULL, "NONE" }
471};
472
473struct winbindd_async_dispatch_table {
474 enum winbindd_cmd cmd;
475 const char *cmd_name;
476 struct tevent_req *(*send_req)(TALLOC_CTX *mem_ctx,
477 struct tevent_context *ev,
478 struct winbindd_cli_state *cli,
479 struct winbindd_request *request);
480 NTSTATUS (*recv_req)(struct tevent_req *req,
481 struct winbindd_response *presp);
482};
483
484static struct winbindd_async_dispatch_table async_nonpriv_table[] = {
485 { WINBINDD_PING, "PING",
486 wb_ping_send, wb_ping_recv },
487 { WINBINDD_LOOKUPSID, "LOOKUPSID",
488 winbindd_lookupsid_send, winbindd_lookupsid_recv },
489 { WINBINDD_LOOKUPSIDS, "LOOKUPSIDS",
490 winbindd_lookupsids_send, winbindd_lookupsids_recv },
491 { WINBINDD_LOOKUPNAME, "LOOKUPNAME",
492 winbindd_lookupname_send, winbindd_lookupname_recv },
493 { WINBINDD_SID_TO_UID, "SID_TO_UID",
494 winbindd_sid_to_uid_send, winbindd_sid_to_uid_recv },
495 { WINBINDD_SID_TO_GID, "SID_TO_GID",
496 winbindd_sid_to_gid_send, winbindd_sid_to_gid_recv },
497 { WINBINDD_UID_TO_SID, "UID_TO_SID",
498 winbindd_uid_to_sid_send, winbindd_uid_to_sid_recv },
499 { WINBINDD_GID_TO_SID, "GID_TO_SID",
500 winbindd_gid_to_sid_send, winbindd_gid_to_sid_recv },
501 { WINBINDD_SIDS_TO_XIDS, "SIDS_TO_XIDS",
502 winbindd_sids_to_xids_send, winbindd_sids_to_xids_recv },
503 { WINBINDD_GETPWSID, "GETPWSID",
504 winbindd_getpwsid_send, winbindd_getpwsid_recv },
505 { WINBINDD_GETPWNAM, "GETPWNAM",
506 winbindd_getpwnam_send, winbindd_getpwnam_recv },
507 { WINBINDD_GETPWUID, "GETPWUID",
508 winbindd_getpwuid_send, winbindd_getpwuid_recv },
509 { WINBINDD_GETSIDALIASES, "GETSIDALIASES",
510 winbindd_getsidaliases_send, winbindd_getsidaliases_recv },
511 { WINBINDD_GETUSERDOMGROUPS, "GETUSERDOMGROUPS",
512 winbindd_getuserdomgroups_send, winbindd_getuserdomgroups_recv },
513 { WINBINDD_GETGROUPS, "GETGROUPS",
514 winbindd_getgroups_send, winbindd_getgroups_recv },
515 { WINBINDD_SHOW_SEQUENCE, "SHOW_SEQUENCE",
516 winbindd_show_sequence_send, winbindd_show_sequence_recv },
517 { WINBINDD_GETGRGID, "GETGRGID",
518 winbindd_getgrgid_send, winbindd_getgrgid_recv },
519 { WINBINDD_GETGRNAM, "GETGRNAM",
520 winbindd_getgrnam_send, winbindd_getgrnam_recv },
521 { WINBINDD_GETUSERSIDS, "GETUSERSIDS",
522 winbindd_getusersids_send, winbindd_getusersids_recv },
523 { WINBINDD_LOOKUPRIDS, "LOOKUPRIDS",
524 winbindd_lookuprids_send, winbindd_lookuprids_recv },
525 { WINBINDD_SETPWENT, "SETPWENT",
526 winbindd_setpwent_send, winbindd_setpwent_recv },
527 { WINBINDD_GETPWENT, "GETPWENT",
528 winbindd_getpwent_send, winbindd_getpwent_recv },
529 { WINBINDD_ENDPWENT, "ENDPWENT",
530 winbindd_endpwent_send, winbindd_endpwent_recv },
531 { WINBINDD_DSGETDCNAME, "DSGETDCNAME",
532 winbindd_dsgetdcname_send, winbindd_dsgetdcname_recv },
533 { WINBINDD_GETDCNAME, "GETDCNAME",
534 winbindd_getdcname_send, winbindd_getdcname_recv },
535 { WINBINDD_SETGRENT, "SETGRENT",
536 winbindd_setgrent_send, winbindd_setgrent_recv },
537 { WINBINDD_GETGRENT, "GETGRENT",
538 winbindd_getgrent_send, winbindd_getgrent_recv },
539 { WINBINDD_ENDGRENT, "ENDGRENT",
540 winbindd_endgrent_send, winbindd_endgrent_recv },
541 { WINBINDD_LIST_USERS, "LIST_USERS",
542 winbindd_list_users_send, winbindd_list_users_recv },
543 { WINBINDD_LIST_GROUPS, "LIST_GROUPS",
544 winbindd_list_groups_send, winbindd_list_groups_recv },
545 { WINBINDD_CHECK_MACHACC, "CHECK_MACHACC",
546 winbindd_check_machine_acct_send, winbindd_check_machine_acct_recv },
547 { WINBINDD_PING_DC, "PING_DC",
548 winbindd_ping_dc_send, winbindd_ping_dc_recv },
549 { WINBINDD_PAM_AUTH, "PAM_AUTH",
550 winbindd_pam_auth_send, winbindd_pam_auth_recv },
551 { WINBINDD_PAM_LOGOFF, "PAM_LOGOFF",
552 winbindd_pam_logoff_send, winbindd_pam_logoff_recv },
553 { WINBINDD_PAM_CHAUTHTOK, "PAM_CHAUTHTOK",
554 winbindd_pam_chauthtok_send, winbindd_pam_chauthtok_recv },
555 { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, "PAM_CHNG_PSWD_AUTH_CRAP",
556 winbindd_pam_chng_pswd_auth_crap_send,
557 winbindd_pam_chng_pswd_auth_crap_recv },
558
559 { 0, NULL, NULL, NULL }
560};
561
562static struct winbindd_async_dispatch_table async_priv_table[] = {
563 { WINBINDD_ALLOCATE_UID, "ALLOCATE_UID",
564 winbindd_allocate_uid_send, winbindd_allocate_uid_recv },
565 { WINBINDD_ALLOCATE_GID, "ALLOCATE_GID",
566 winbindd_allocate_gid_send, winbindd_allocate_gid_recv },
567 { WINBINDD_CHANGE_MACHACC, "CHANGE_MACHACC",
568 winbindd_change_machine_acct_send, winbindd_change_machine_acct_recv },
569 { WINBINDD_PAM_AUTH_CRAP, "PAM_AUTH_CRAP",
570 winbindd_pam_auth_crap_send, winbindd_pam_auth_crap_recv },
571
572 { 0, NULL, NULL, NULL }
573};
574
575static void wb_request_done(struct tevent_req *req);
576
577static void process_request(struct winbindd_cli_state *state)
578{
579 struct winbindd_dispatch_table *table = dispatch_table;
580 struct winbindd_async_dispatch_table *atable;
581
582 state->mem_ctx = talloc_named(state, 0, "winbind request");
583 if (state->mem_ctx == NULL)
584 return;
585
586 /* Remember who asked us. */
587 state->pid = state->request->pid;
588
589 state->cmd_name = "unknown request";
590 state->recv_fn = NULL;
591 state->last_access = time(NULL);
592
593 /* Process command */
594
595 for (atable = async_nonpriv_table; atable->send_req; atable += 1) {
596 if (state->request->cmd == atable->cmd) {
597 break;
598 }
599 }
600
601 if ((atable->send_req == NULL) && state->privileged) {
602 for (atable = async_priv_table; atable->send_req;
603 atable += 1) {
604 if (state->request->cmd == atable->cmd) {
605 break;
606 }
607 }
608 }
609
610 if (atable->send_req != NULL) {
611 struct tevent_req *req;
612
613 state->cmd_name = atable->cmd_name;
614 state->recv_fn = atable->recv_req;
615
616 DEBUG(10, ("process_request: Handling async request %d:%s\n",
617 (int)state->pid, state->cmd_name));
618
619 req = atable->send_req(state->mem_ctx, winbind_event_context(),
620 state, state->request);
621 if (req == NULL) {
622 DEBUG(0, ("process_request: atable->send failed for "
623 "%s\n", atable->cmd_name));
624 request_error(state);
625 return;
626 }
627 tevent_req_set_callback(req, wb_request_done, state);
628 return;
629 }
630
631 state->response = talloc_zero(state->mem_ctx,
632 struct winbindd_response);
633 if (state->response == NULL) {
634 DEBUG(10, ("talloc failed\n"));
635 remove_client(state);
636 return;
637 }
638 state->response->result = WINBINDD_PENDING;
639 state->response->length = sizeof(struct winbindd_response);
640
641 for (table = dispatch_table; table->fn; table++) {
642 if (state->request->cmd == table->cmd) {
643 DEBUG(10,("process_request: request fn %s\n",
644 table->winbindd_cmd_name ));
645 state->cmd_name = table->winbindd_cmd_name;
646 table->fn(state);
647 break;
648 }
649 }
650
651 if (!table->fn) {
652 DEBUG(10,("process_request: unknown request fn number %d\n",
653 (int)state->request->cmd ));
654 request_error(state);
655 }
656}
657
658static void wb_request_done(struct tevent_req *req)
659{
660 struct winbindd_cli_state *state = tevent_req_callback_data(
661 req, struct winbindd_cli_state);
662 NTSTATUS status;
663
664 state->response = talloc_zero(state->mem_ctx,
665 struct winbindd_response);
666 if (state->response == NULL) {
667 DEBUG(0, ("wb_request_done[%d:%s]: talloc_zero failed - removing client\n",
668 (int)state->pid, state->cmd_name));
669 remove_client(state);
670 return;
671 }
672 state->response->result = WINBINDD_PENDING;
673 state->response->length = sizeof(struct winbindd_response);
674
675 status = state->recv_fn(req, state->response);
676 TALLOC_FREE(req);
677
678 DEBUG(10,("wb_request_done[%d:%s]: %s\n",
679 (int)state->pid, state->cmd_name, nt_errstr(status)));
680
681 if (!NT_STATUS_IS_OK(status)) {
682 request_error(state);
683 return;
684 }
685 request_ok(state);
686}
687
688/*
689 * This is the main event loop of winbind requests. It goes through a
690 * state-machine of 3 read/write requests, 4 if you have extra data to send.
691 *
692 * An idle winbind client has a read request of 4 bytes outstanding,
693 * finalizing function is request_len_recv, checking the length. request_recv
694 * then processes the packet. The processing function then at some point has
695 * to call request_finished which schedules sending the response.
696 */
697
698static void request_finished(struct winbindd_cli_state *state);
699
700static void winbind_client_request_read(struct tevent_req *req);
701static void winbind_client_response_written(struct tevent_req *req);
702
703static void request_finished(struct winbindd_cli_state *state)
704{
705 struct tevent_req *req;
706
707 TALLOC_FREE(state->request);
708
709 req = wb_resp_write_send(state, winbind_event_context(),
710 state->out_queue, state->sock,
711 state->response);
712 if (req == NULL) {
713 DEBUG(10,("request_finished[%d:%s]: wb_resp_write_send() failed\n",
714 (int)state->pid, state->cmd_name));
715 remove_client(state);
716 return;
717 }
718 tevent_req_set_callback(req, winbind_client_response_written, state);
719}
720
721static void winbind_client_response_written(struct tevent_req *req)
722{
723 struct winbindd_cli_state *state = tevent_req_callback_data(
724 req, struct winbindd_cli_state);
725 ssize_t ret;
726 int err;
727
728 ret = wb_resp_write_recv(req, &err);
729 TALLOC_FREE(req);
730 if (ret == -1) {
731 close(state->sock);
732 state->sock = -1;
733 DEBUG(2, ("Could not write response[%d:%s] to client: %s\n",
734 (int)state->pid, state->cmd_name, strerror(err)));
735 remove_client(state);
736 return;
737 }
738
739 DEBUG(10,("winbind_client_response_written[%d:%s]: delivered response "
740 "to client\n", (int)state->pid, state->cmd_name));
741
742 TALLOC_FREE(state->mem_ctx);
743 state->response = NULL;
744 state->cmd_name = "no request";
745 state->recv_fn = NULL;
746
747 req = wb_req_read_send(state, winbind_event_context(), state->sock,
748 WINBINDD_MAX_EXTRA_DATA);
749 if (req == NULL) {
750 remove_client(state);
751 return;
752 }
753 tevent_req_set_callback(req, winbind_client_request_read, state);
754}
755
756void request_error(struct winbindd_cli_state *state)
757{
758 SMB_ASSERT(state->response->result == WINBINDD_PENDING);
759 state->response->result = WINBINDD_ERROR;
760 request_finished(state);
761}
762
763void request_ok(struct winbindd_cli_state *state)
764{
765 SMB_ASSERT(state->response->result == WINBINDD_PENDING);
766 state->response->result = WINBINDD_OK;
767 request_finished(state);
768}
769
770/* Process a new connection by adding it to the client connection list */
771
772static void new_connection(int listen_sock, bool privileged)
773{
774 struct sockaddr_un sunaddr;
775 struct winbindd_cli_state *state;
776 struct tevent_req *req;
777 socklen_t len;
778 int sock;
779
780 /* Accept connection */
781
782 len = sizeof(sunaddr);
783
784 sock = accept(listen_sock, (struct sockaddr *)(void *)&sunaddr, &len);
785
786 if (sock == -1) {
787 if (errno != EINTR) {
788 DEBUG(0, ("Faild to accept socket - %s\n",
789 strerror(errno)));
790 }
791 return;
792 }
793
794 DEBUG(6,("accepted socket %d\n", sock));
795
796 /* Create new connection structure */
797
798 if ((state = TALLOC_ZERO_P(NULL, struct winbindd_cli_state)) == NULL) {
799 close(sock);
800 return;
801 }
802
803 state->sock = sock;
804
805 state->out_queue = tevent_queue_create(state, "winbind client reply");
806 if (state->out_queue == NULL) {
807 close(sock);
808 TALLOC_FREE(state);
809 return;
810 }
811
812 state->last_access = time(NULL);
813
814 state->privileged = privileged;
815
816 req = wb_req_read_send(state, winbind_event_context(), state->sock,
817 WINBINDD_MAX_EXTRA_DATA);
818 if (req == NULL) {
819 TALLOC_FREE(state);
820 close(sock);
821 return;
822 }
823 tevent_req_set_callback(req, winbind_client_request_read, state);
824
825 /* Add to connection list */
826
827 winbindd_add_client(state);
828}
829
830static void winbind_client_request_read(struct tevent_req *req)
831{
832 struct winbindd_cli_state *state = tevent_req_callback_data(
833 req, struct winbindd_cli_state);
834 ssize_t ret;
835 int err;
836
837 ret = wb_req_read_recv(req, state, &state->request, &err);
838 TALLOC_FREE(req);
839 if (ret == -1) {
840 if (err == EPIPE) {
841 DEBUG(6, ("closing socket %d, client exited\n",
842 state->sock));
843 } else {
844 DEBUG(2, ("Could not read client request from fd %d: "
845 "%s\n", state->sock, strerror(err)));
846 }
847 close(state->sock);
848 state->sock = -1;
849 remove_client(state);
850 return;
851 }
852 process_request(state);
853}
854
855/* Remove a client connection from client connection list */
856
857static void remove_client(struct winbindd_cli_state *state)
858{
859 char c = 0;
860 int nwritten;
861
862 /* It's a dead client - hold a funeral */
863
864 if (state == NULL) {
865 return;
866 }
867
868 if (state->sock != -1) {
869 /* tell client, we are closing ... */
870 nwritten = write(state->sock, &c, sizeof(c));
871 if (nwritten == -1) {
872 DEBUG(2, ("final write to client failed: %s\n",
873 strerror(errno)));
874 }
875
876 /* Close socket */
877
878 close(state->sock);
879 state->sock = -1;
880 }
881
882 TALLOC_FREE(state->mem_ctx);
883
884 /* Remove from list and free */
885
886 winbindd_remove_client(state);
887 TALLOC_FREE(state);
888}
889
890/* Is a client idle? */
891
892static bool client_is_idle(struct winbindd_cli_state *state) {
893 return (state->request == NULL &&
894 state->response == NULL &&
895 !state->pwent_state && !state->grent_state);
896}
897
898/* Shutdown client connection which has been idle for the longest time */
899
900static bool remove_idle_client(void)
901{
902 struct winbindd_cli_state *state, *remove_state = NULL;
903 time_t last_access = 0;
904 int nidle = 0;
905
906 for (state = winbindd_client_list(); state; state = state->next) {
907 if (client_is_idle(state)) {
908 nidle++;
909 if (!last_access || state->last_access < last_access) {
910 last_access = state->last_access;
911 remove_state = state;
912 }
913 }
914 }
915
916 if (remove_state) {
917 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
918 nidle, remove_state->sock, (unsigned int)remove_state->pid));
919 remove_client(remove_state);
920 return True;
921 }
922
923 return False;
924}
925
926struct winbindd_listen_state {
927 bool privileged;
928 int fd;
929};
930
931static void winbindd_listen_fde_handler(struct tevent_context *ev,
932 struct tevent_fd *fde,
933 uint16_t flags,
934 void *private_data)
935{
936 struct winbindd_listen_state *s = talloc_get_type_abort(private_data,
937 struct winbindd_listen_state);
938
939 while (winbindd_num_clients() > lp_winbind_max_clients() - 1) {
940 DEBUG(5,("winbindd: Exceeding %d client "
941 "connections, removing idle "
942 "connection.\n", lp_winbind_max_clients()));
943 if (!remove_idle_client()) {
944 DEBUG(0,("winbindd: Exceeding %d "
945 "client connections, no idle "
946 "connection found\n",
947 lp_winbind_max_clients()));
948 break;
949 }
950 }
951 new_connection(s->fd, s->privileged);
952}
953
954/*
955 * Winbindd socket accessor functions
956 */
957
958const char *get_winbind_pipe_dir(void)
959{
960 return lp_parm_const_string(-1, "winbindd", "socket dir", WINBINDD_SOCKET_DIR);
961}
962
963char *get_winbind_priv_pipe_dir(void)
964{
965 return lock_path(WINBINDD_PRIV_SOCKET_SUBDIR);
966}
967
968static bool winbindd_setup_listeners(void)
969{
970 struct winbindd_listen_state *pub_state = NULL;
971 struct winbindd_listen_state *priv_state = NULL;
972 struct tevent_fd *fde;
973
974 pub_state = talloc(winbind_event_context(),
975 struct winbindd_listen_state);
976 if (!pub_state) {
977 goto failed;
978 }
979
980 pub_state->privileged = false;
981 pub_state->fd = create_pipe_sock(
982 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME, 0755);
983 if (pub_state->fd == -1) {
984 goto failed;
985 }
986
987 fde = tevent_add_fd(winbind_event_context(), pub_state, pub_state->fd,
988 TEVENT_FD_READ, winbindd_listen_fde_handler,
989 pub_state);
990 if (fde == NULL) {
991 close(pub_state->fd);
992 goto failed;
993 }
994 tevent_fd_set_auto_close(fde);
995
996 priv_state = talloc(winbind_event_context(),
997 struct winbindd_listen_state);
998 if (!priv_state) {
999 goto failed;
1000 }
1001
1002 priv_state->privileged = true;
1003 priv_state->fd = create_pipe_sock(
1004 get_winbind_priv_pipe_dir(), WINBINDD_SOCKET_NAME, 0750);
1005 if (priv_state->fd == -1) {
1006 goto failed;
1007 }
1008
1009 fde = tevent_add_fd(winbind_event_context(), priv_state,
1010 priv_state->fd, TEVENT_FD_READ,
1011 winbindd_listen_fde_handler, priv_state);
1012 if (fde == NULL) {
1013 close(priv_state->fd);
1014 goto failed;
1015 }
1016 tevent_fd_set_auto_close(fde);
1017
1018 return true;
1019failed:
1020 TALLOC_FREE(pub_state);
1021 TALLOC_FREE(priv_state);
1022 return false;
1023}
1024
1025bool winbindd_use_idmap_cache(void)
1026{
1027 return !opt_nocache;
1028}
1029
1030bool winbindd_use_cache(void)
1031{
1032 return !opt_nocache;
1033}
1034
1035void winbindd_register_handlers(void)
1036{
1037 /* Setup signal handlers */
1038
1039 if (!winbindd_setup_sig_term_handler(true))
1040 exit(1);
1041 if (!winbindd_setup_sig_hup_handler(NULL))
1042 exit(1);
1043 if (!winbindd_setup_sig_chld_handler())
1044 exit(1);
1045 if (!winbindd_setup_sig_usr2_handler())
1046 exit(1);
1047
1048 CatchSignal(SIGPIPE, SIG_IGN); /* Ignore sigpipe */
1049
1050 /*
1051 * Ensure all cache and idmap caches are consistent
1052 * and initialized before we startup.
1053 */
1054 if (!winbindd_cache_validate_and_initialize()) {
1055 exit(1);
1056 }
1057
1058 /* get broadcast messages */
1059
1060 if (!serverid_register(procid_self(),
1061 FLAG_MSG_GENERAL|FLAG_MSG_DBWRAP)) {
1062 DEBUG(1, ("Could not register myself in serverid.tdb\n"));
1063 exit(1);
1064 }
1065
1066 /* React on 'smbcontrol winbindd reload-config' in the same way
1067 as to SIGHUP signal */
1068 messaging_register(winbind_messaging_context(), NULL,
1069 MSG_SMB_CONF_UPDATED, msg_reload_services);
1070 messaging_register(winbind_messaging_context(), NULL,
1071 MSG_SHUTDOWN, msg_shutdown);
1072
1073 /* Handle online/offline messages. */
1074 messaging_register(winbind_messaging_context(), NULL,
1075 MSG_WINBIND_OFFLINE, winbind_msg_offline);
1076 messaging_register(winbind_messaging_context(), NULL,
1077 MSG_WINBIND_ONLINE, winbind_msg_online);
1078 messaging_register(winbind_messaging_context(), NULL,
1079 MSG_WINBIND_ONLINESTATUS, winbind_msg_onlinestatus);
1080
1081 /* Handle domain online/offline messages for domains */
1082 messaging_register(winbind_messaging_context(), NULL,
1083 MSG_WINBIND_DOMAIN_OFFLINE, winbind_msg_domain_offline);
1084 messaging_register(winbind_messaging_context(), NULL,
1085 MSG_WINBIND_DOMAIN_ONLINE, winbind_msg_domain_online);
1086
1087 messaging_register(winbind_messaging_context(), NULL,
1088 MSG_DUMP_EVENT_LIST, winbind_msg_dump_event_list);
1089
1090 messaging_register(winbind_messaging_context(), NULL,
1091 MSG_WINBIND_VALIDATE_CACHE,
1092 winbind_msg_validate_cache);
1093
1094 messaging_register(winbind_messaging_context(), NULL,
1095 MSG_WINBIND_DUMP_DOMAIN_LIST,
1096 winbind_msg_dump_domain_list);
1097
1098 messaging_register(winbind_messaging_context(), NULL,
1099 MSG_WINBIND_IP_DROPPED,
1100 winbind_msg_ip_dropped_parent);
1101
1102 /* Register handler for MSG_DEBUG. */
1103 messaging_register(winbind_messaging_context(), NULL,
1104 MSG_DEBUG,
1105 winbind_msg_debug);
1106
1107 netsamlogon_cache_init(); /* Non-critical */
1108
1109 /* clear the cached list of trusted domains */
1110
1111 wcache_tdc_clear();
1112
1113 if (!init_domain_list()) {
1114 DEBUG(0,("unable to initialize domain list\n"));
1115 exit(1);
1116 }
1117
1118 init_idmap_child();
1119 init_locator_child();
1120
1121 smb_nscd_flush_user_cache();
1122 smb_nscd_flush_group_cache();
1123
1124 if (lp_allow_trusted_domains()) {
1125 if (tevent_add_timer(winbind_event_context(), NULL, timeval_zero(),
1126 rescan_trusted_domains, NULL) == NULL) {
1127 DEBUG(0, ("Could not trigger rescan_trusted_domains()\n"));
1128 exit(1);
1129 }
1130 }
1131
1132}
1133
1134struct winbindd_addrchanged_state {
1135 struct addrchange_context *ctx;
1136 struct tevent_context *ev;
1137 struct messaging_context *msg_ctx;
1138};
1139
1140static void winbindd_addr_changed(struct tevent_req *req);
1141
1142static void winbindd_init_addrchange(TALLOC_CTX *mem_ctx,
1143 struct tevent_context *ev,
1144 struct messaging_context *msg_ctx)
1145{
1146 struct winbindd_addrchanged_state *state;
1147 struct tevent_req *req;
1148 NTSTATUS status;
1149
1150 state = talloc(mem_ctx, struct winbindd_addrchanged_state);
1151 if (state == NULL) {
1152 DEBUG(10, ("talloc failed\n"));
1153 return;
1154 }
1155 state->ev = ev;
1156 state->msg_ctx = msg_ctx;
1157
1158 status = addrchange_context_create(state, &state->ctx);
1159 if (!NT_STATUS_IS_OK(status)) {
1160 DEBUG(10, ("addrchange_context_create failed: %s\n",
1161 nt_errstr(status)));
1162 TALLOC_FREE(state);
1163 return;
1164 }
1165 req = addrchange_send(state, ev, state->ctx);
1166 if (req == NULL) {
1167 DEBUG(0, ("addrchange_send failed\n"));
1168 TALLOC_FREE(state);
1169 return;
1170 }
1171 tevent_req_set_callback(req, winbindd_addr_changed, state);
1172}
1173
1174static void winbindd_addr_changed(struct tevent_req *req)
1175{
1176 struct winbindd_addrchanged_state *state = tevent_req_callback_data(
1177 req, struct winbindd_addrchanged_state);
1178 enum addrchange_type type;
1179 struct sockaddr_storage addr;
1180 NTSTATUS status;
1181
1182 status = addrchange_recv(req, &type, &addr);
1183 TALLOC_FREE(req);
1184 if (!NT_STATUS_IS_OK(status)) {
1185 DEBUG(10, ("addrchange_recv failed: %s, stop listening\n",
1186 nt_errstr(status)));
1187 TALLOC_FREE(state);
1188 return;
1189 }
1190 if (type == ADDRCHANGE_DEL) {
1191 char addrstr[INET6_ADDRSTRLEN];
1192 DATA_BLOB blob;
1193
1194 print_sockaddr(addrstr, sizeof(addrstr), &addr);
1195
1196 DEBUG(3, ("winbindd: kernel (AF_NETLINK) dropped ip %s\n",
1197 addrstr));
1198
1199 blob = data_blob_const(addrstr, strlen(addrstr)+1);
1200
1201 status = messaging_send(state->msg_ctx,
1202 messaging_server_id(state->msg_ctx),
1203 MSG_WINBIND_IP_DROPPED, &blob);
1204 if (!NT_STATUS_IS_OK(status)) {
1205 DEBUG(10, ("messaging_send failed: %s - ignoring\n",
1206 nt_errstr(status)));
1207 }
1208 }
1209 req = addrchange_send(state, state->ev, state->ctx);
1210 if (req == NULL) {
1211 DEBUG(0, ("addrchange_send failed\n"));
1212 TALLOC_FREE(state);
1213 return;
1214 }
1215 tevent_req_set_callback(req, winbindd_addr_changed, state);
1216}
1217
1218/* Main function */
1219
1220int main(int argc, char **argv, char **envp)
1221{
1222 static bool is_daemon = False;
1223 static bool Fork = True;
1224 static bool log_stdout = False;
1225 static bool no_process_group = False;
1226 enum {
1227 OPT_DAEMON = 1000,
1228 OPT_FORK,
1229 OPT_NO_PROCESS_GROUP,
1230 OPT_LOG_STDOUT
1231 };
1232 struct poptOption long_options[] = {
1233 POPT_AUTOHELP
1234 { "stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1235 { "foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Daemon in foreground mode" },
1236 { "no-process-group", 0, POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1237 { "daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1238 { "interactive", 'i', POPT_ARG_NONE, NULL, 'i', "Interactive mode" },
1239 { "no-caching", 'n', POPT_ARG_NONE, NULL, 'n', "Disable caching" },
1240 POPT_COMMON_SAMBA
1241 POPT_TABLEEND
1242 };
1243 poptContext pc;
1244 int opt;
1245 TALLOC_CTX *frame;
1246 NTSTATUS status;
1247
1248 /*
1249 * Do this before any other talloc operation
1250 */
1251 talloc_enable_null_tracking();
1252 frame = talloc_stackframe();
1253
1254 /* glibc (?) likes to print "User defined signal 1" and exit if a
1255 SIGUSR[12] is received before a handler is installed */
1256
1257 CatchSignal(SIGUSR1, SIG_IGN);
1258 CatchSignal(SIGUSR2, SIG_IGN);
1259
1260 fault_setup((void (*)(void *))fault_quit );
1261 dump_core_setup("winbindd");
1262
1263 load_case_tables();
1264
1265 /* Initialise for running in non-root mode */
1266
1267 sec_init();
1268
1269 set_remote_machine_name("winbindd", False);
1270
1271 /* Set environment variable so we don't recursively call ourselves.
1272 This may also be useful interactively. */
1273
1274 if ( !winbind_off() ) {
1275 DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
1276 exit(1);
1277 }
1278
1279 /* Initialise samba/rpc client stuff */
1280
1281 pc = poptGetContext("winbindd", argc, (const char **)argv, long_options, 0);
1282
1283 while ((opt = poptGetNextOpt(pc)) != -1) {
1284 switch (opt) {
1285 /* Don't become a daemon */
1286 case OPT_DAEMON:
1287 is_daemon = True;
1288 break;
1289 case 'i':
1290 interactive = True;
1291 log_stdout = True;
1292 Fork = False;
1293 break;
1294 case OPT_FORK:
1295 Fork = false;
1296 break;
1297 case OPT_NO_PROCESS_GROUP:
1298 no_process_group = true;
1299 break;
1300 case OPT_LOG_STDOUT:
1301 log_stdout = true;
1302 break;
1303 case 'n':
1304 opt_nocache = true;
1305 break;
1306 default:
1307 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1308 poptBadOption(pc, 0), poptStrerror(opt));
1309 poptPrintUsage(pc, stderr, 0);
1310 exit(1);
1311 }
1312 }
1313
1314 /* We call dump_core_setup one more time because the command line can
1315 * set the log file or the log-basename and this will influence where
1316 * cores are stored. Without this call get_dyn_LOGFILEBASE will be
1317 * the default value derived from build's prefix. For EOM this value
1318 * is often not related to the path where winbindd is actually run
1319 * in production.
1320 */
1321 dump_core_setup("winbindd");
1322
1323 if (is_daemon && interactive) {
1324 d_fprintf(stderr,"\nERROR: "
1325 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
1326 poptPrintUsage(pc, stderr, 0);
1327 exit(1);
1328 }
1329
1330 if (log_stdout && Fork) {
1331 d_fprintf(stderr, "\nERROR: "
1332 "Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n\n");
1333 poptPrintUsage(pc, stderr, 0);
1334 exit(1);
1335 }
1336
1337 poptFreeContext(pc);
1338
1339 if (!override_logfile) {
1340 char *lfile = NULL;
1341 if (asprintf(&lfile,"%s/log.winbindd",
1342 get_dyn_LOGFILEBASE()) > 0) {
1343 lp_set_logfile(lfile);
1344 SAFE_FREE(lfile);
1345 }
1346 }
1347 if (log_stdout) {
1348 setup_logging("winbindd", DEBUG_STDOUT);
1349 } else {
1350 setup_logging("winbindd", DEBUG_FILE);
1351 }
1352 reopen_logs();
1353
1354 DEBUG(0,("winbindd version %s started.\n", samba_version_string()));
1355 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1356#ifdef __OS2__
1357 DEBUGADD(0,("%s\n", maintained_by_string()));
1358#endif
1359
1360 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1361 DEBUG(0, ("error opening config file\n"));
1362 exit(1);
1363 }
1364 /* After parsing the configuration file we setup the core path one more time
1365 * as the log file might have been set in the configuration and cores's
1366 * path is by default basename(lp_logfile()).
1367 */
1368 dump_core_setup("winbindd");
1369
1370 /* Initialise messaging system */
1371
1372 if (winbind_messaging_context() == NULL) {
1373 exit(1);
1374 }
1375
1376 if (!reload_services_file(NULL)) {
1377 DEBUG(0, ("error opening config file\n"));
1378 exit(1);
1379 }
1380
1381 if (!directory_exist(lp_lockdir())) {
1382 mkdir(lp_lockdir(), 0755);
1383 }
1384
1385 /* Setup names. */
1386
1387 if (!init_names())
1388 exit(1);
1389
1390 load_interfaces();
1391
1392 if (!secrets_init()) {
1393
1394 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1395 return False;
1396 }
1397
1398 /* Unblock all signals we are interested in as they may have been
1399 blocked by the parent process. */
1400
1401 BlockSignals(False, SIGINT);
1402 BlockSignals(False, SIGQUIT);
1403 BlockSignals(False, SIGTERM);
1404 BlockSignals(False, SIGUSR1);
1405 BlockSignals(False, SIGUSR2);
1406 BlockSignals(False, SIGHUP);
1407 BlockSignals(False, SIGCHLD);
1408
1409 if (!interactive)
1410 become_daemon(Fork, no_process_group, log_stdout);
1411
1412 pidfile_create("winbindd");
1413
1414#if HAVE_SETPGID
1415 /*
1416 * If we're interactive we want to set our own process group for
1417 * signal management.
1418 */
1419 if (interactive && !no_process_group)
1420 setpgid( (pid_t)0, (pid_t)0);
1421#endif
1422
1423 TimeInit();
1424
1425 /* Don't use winbindd_reinit_after_fork here as
1426 * we're just starting up and haven't created any
1427 * winbindd-specific resources we must free yet. JRA.
1428 */
1429
1430 status = reinit_after_fork(winbind_messaging_context(),
1431 winbind_event_context(),
1432 procid_self(), false);
1433 if (!NT_STATUS_IS_OK(status)) {
1434 DEBUG(0,("reinit_after_fork() failed\n"));
1435 exit(1);
1436 }
1437
1438 winbindd_register_handlers();
1439
1440 status = init_system_info();
1441 if (!NT_STATUS_IS_OK(status)) {
1442 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1443 nt_errstr(status)));
1444 exit(1);
1445 }
1446
1447 rpc_lsarpc_init(NULL);
1448 rpc_samr_init(NULL);
1449
1450 winbindd_init_addrchange(NULL, winbind_event_context(),
1451 winbind_messaging_context());
1452
1453 /* setup listen sockets */
1454
1455 if (!winbindd_setup_listeners()) {
1456 DEBUG(0,("winbindd_setup_listeners() failed\n"));
1457 exit(1);
1458 }
1459
1460 TALLOC_FREE(frame);
1461 /* Loop waiting for requests */
1462 while (1) {
1463 frame = talloc_stackframe();
1464
1465 if (tevent_loop_once(winbind_event_context()) == -1) {
1466 DEBUG(1, ("tevent_loop_once() failed: %s\n",
1467 strerror(errno)));
1468 return 1;
1469 }
1470
1471 TALLOC_FREE(frame);
1472 }
1473
1474 return 0;
1475}
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