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docs: man ldbdel: Add missing meta data.
[Samba/gebeck_regimport.git] / source3 / winbindd / winbindd.c
blob654c14c504de6d4ad964977318d5e620373a1f0f
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 state->last_access = time(NULL);
625
626 /* Process command */
627
628 for (atable = async_nonpriv_table; atable->send_req; atable += 1) {
629 if (state->request->cmd == atable->cmd) {
630 break;
631 }
632 }
633
634 if ((atable->send_req == NULL) && state->privileged) {
635 for (atable = async_priv_table; atable->send_req;
636 atable += 1) {
637 if (state->request->cmd == atable->cmd) {
638 break;
639 }
640 }
641 }
642
643 if (atable->send_req != NULL) {
644 struct tevent_req *req;
645
646 state->cmd_name = atable->cmd_name;
647 state->recv_fn = atable->recv_req;
648
649 DEBUG(10, ("process_request: Handling async request %d:%s\n",
650 (int)state->pid, state->cmd_name));
651
652 req = atable->send_req(state->mem_ctx, winbind_event_context(),
653 state, state->request);
654 if (req == NULL) {
655 DEBUG(0, ("process_request: atable->send failed for "
656 "%s\n", atable->cmd_name));
657 request_error(state);
658 return;
659 }
660 tevent_req_set_callback(req, wb_request_done, state);
661 return;
662 }
663
664 state->response = talloc_zero(state->mem_ctx,
665 struct winbindd_response);
666 if (state->response == NULL) {
667 DEBUG(10, ("talloc failed\n"));
668 remove_client(state);
669 return;
670 }
671 state->response->result = WINBINDD_PENDING;
672 state->response->length = sizeof(struct winbindd_response);
673
674 for (table = dispatch_table; table->fn; table++) {
675 if (state->request->cmd == table->cmd) {
676 DEBUG(10,("process_request: request fn %s\n",
677 table->winbindd_cmd_name ));
678 state->cmd_name = table->winbindd_cmd_name;
679 table->fn(state);
680 break;
681 }
682 }
683
684 if (!table->fn) {
685 DEBUG(10,("process_request: unknown request fn number %d\n",
686 (int)state->request->cmd ));
687 request_error(state);
688 }
689 }
690
691 static void wb_request_done(struct tevent_req *req)
692 {
693 struct winbindd_cli_state *state = tevent_req_callback_data(
694 req, struct winbindd_cli_state);
695 NTSTATUS status;
696
697 state->response = talloc_zero(state->mem_ctx,
698 struct winbindd_response);
699 if (state->response == NULL) {
700 DEBUG(0, ("wb_request_done[%d:%s]: talloc_zero failed - removing client\n",
701 (int)state->pid, state->cmd_name));
702 remove_client(state);
703 return;
704 }
705 state->response->result = WINBINDD_PENDING;
706 state->response->length = sizeof(struct winbindd_response);
707
708 status = state->recv_fn(req, state->response);
709 TALLOC_FREE(req);
710
711 DEBUG(10,("wb_request_done[%d:%s]: %s\n",
712 (int)state->pid, state->cmd_name, nt_errstr(status)));
713
714 if (!NT_STATUS_IS_OK(status)) {
715 request_error(state);
716 return;
717 }
718 request_ok(state);
719 }
720
721 /*
722 * This is the main event loop of winbind requests. It goes through a
723 * state-machine of 3 read/write requests, 4 if you have extra data to send.
724 *
725 * An idle winbind client has a read request of 4 bytes outstanding,
726 * finalizing function is request_len_recv, checking the length. request_recv
727 * then processes the packet. The processing function then at some point has
728 * to call request_finished which schedules sending the response.
729 */
730
731 static void request_finished(struct winbindd_cli_state *state);
732
733 static void winbind_client_request_read(struct tevent_req *req);
734 static void winbind_client_response_written(struct tevent_req *req);
735
736 static void request_finished(struct winbindd_cli_state *state)
737 {
738 struct tevent_req *req;
739
740 TALLOC_FREE(state->request);
741
742 req = wb_resp_write_send(state, winbind_event_context(),
743 state->out_queue, state->sock,
744 state->response);
745 if (req == NULL) {
746 DEBUG(10,("request_finished[%d:%s]: wb_resp_write_send() failed\n",
747 (int)state->pid, state->cmd_name));
748 remove_client(state);
749 return;
750 }
751 tevent_req_set_callback(req, winbind_client_response_written, state);
752 }
753
754 static void winbind_client_response_written(struct tevent_req *req)
755 {
756 struct winbindd_cli_state *state = tevent_req_callback_data(
757 req, struct winbindd_cli_state);
758 ssize_t ret;
759 int err;
760
761 ret = wb_resp_write_recv(req, &err);
762 TALLOC_FREE(req);
763 if (ret == -1) {
764 close(state->sock);
765 state->sock = -1;
766 DEBUG(2, ("Could not write response[%d:%s] to client: %s\n",
767 (int)state->pid, state->cmd_name, strerror(err)));
768 remove_client(state);
769 return;
770 }
771
772 DEBUG(10,("winbind_client_response_written[%d:%s]: delivered response "
773 "to client\n", (int)state->pid, state->cmd_name));
774
775 TALLOC_FREE(state->mem_ctx);
776 state->response = NULL;
777 state->cmd_name = "no request";
778 state->recv_fn = NULL;
779
780 req = wb_req_read_send(state, winbind_event_context(), state->sock,
781 WINBINDD_MAX_EXTRA_DATA);
782 if (req == NULL) {
783 remove_client(state);
784 return;
785 }
786 tevent_req_set_callback(req, winbind_client_request_read, state);
787 }
788
789 void request_error(struct winbindd_cli_state *state)
790 {
791 SMB_ASSERT(state->response->result == WINBINDD_PENDING);
792 state->response->result = WINBINDD_ERROR;
793 request_finished(state);
794 }
795
796 void request_ok(struct winbindd_cli_state *state)
797 {
798 SMB_ASSERT(state->response->result == WINBINDD_PENDING);
799 state->response->result = WINBINDD_OK;
800 request_finished(state);
801 }
802
803 /* Process a new connection by adding it to the client connection list */
804
805 static void new_connection(int listen_sock, bool privileged)
806 {
807 struct sockaddr_un sunaddr;
808 struct winbindd_cli_state *state;
809 struct tevent_req *req;
810 socklen_t len;
811 int sock;
812
813 /* Accept connection */
814
815 len = sizeof(sunaddr);
816
817 sock = accept(listen_sock, (struct sockaddr *)(void *)&sunaddr, &len);
818
819 if (sock == -1) {
820 if (errno != EINTR) {
821 DEBUG(0, ("Faild to accept socket - %s\n",
822 strerror(errno)));
823 }
824 return;
825 }
826
827 DEBUG(6,("accepted socket %d\n", sock));
828
829 /* Create new connection structure */
830
831 if ((state = talloc_zero(NULL, struct winbindd_cli_state)) == NULL) {
832 close(sock);
833 return;
834 }
835
836 state->sock = sock;
837
838 state->out_queue = tevent_queue_create(state, "winbind client reply");
839 if (state->out_queue == NULL) {
840 close(sock);
841 TALLOC_FREE(state);
842 return;
843 }
844
845 state->last_access = time(NULL);
846
847 state->privileged = privileged;
848
849 req = wb_req_read_send(state, winbind_event_context(), state->sock,
850 WINBINDD_MAX_EXTRA_DATA);
851 if (req == NULL) {
852 TALLOC_FREE(state);
853 close(sock);
854 return;
855 }
856 tevent_req_set_callback(req, winbind_client_request_read, state);
857
858 /* Add to connection list */
859
860 winbindd_add_client(state);
861 }
862
863 static void winbind_client_request_read(struct tevent_req *req)
864 {
865 struct winbindd_cli_state *state = tevent_req_callback_data(
866 req, struct winbindd_cli_state);
867 ssize_t ret;
868 int err;
869
870 ret = wb_req_read_recv(req, state, &state->request, &err);
871 TALLOC_FREE(req);
872 if (ret == -1) {
873 if (err == EPIPE) {
874 DEBUG(6, ("closing socket %d, client exited\n",
875 state->sock));
876 } else {
877 DEBUG(2, ("Could not read client request from fd %d: "
878 "%s\n", state->sock, strerror(err)));
879 }
880 close(state->sock);
881 state->sock = -1;
882 remove_client(state);
883 return;
884 }
885 process_request(state);
886 }
887
888 /* Remove a client connection from client connection list */
889
890 static void remove_client(struct winbindd_cli_state *state)
891 {
892 char c = 0;
893 int nwritten;
894
895 /* It's a dead client - hold a funeral */
896
897 if (state == NULL) {
898 return;
899 }
900
901 if (state->sock != -1) {
902 /* tell client, we are closing ... */
903 nwritten = write(state->sock, &c, sizeof(c));
904 if (nwritten == -1) {
905 DEBUG(2, ("final write to client failed: %s\n",
906 strerror(errno)));
907 }
908
909 /* Close socket */
910
911 close(state->sock);
912 state->sock = -1;
913 }
914
915 TALLOC_FREE(state->mem_ctx);
916
917 /* Remove from list and free */
918
919 winbindd_remove_client(state);
920 TALLOC_FREE(state);
921 }
922
923 /* Is a client idle? */
924
925 static bool client_is_idle(struct winbindd_cli_state *state) {
926 return (state->request == NULL &&
927 state->response == NULL &&
928 !state->pwent_state && !state->grent_state);
929 }
930
931 /* Shutdown client connection which has been idle for the longest time */
932
933 static bool remove_idle_client(void)
934 {
935 struct winbindd_cli_state *state, *remove_state = NULL;
936 time_t last_access = 0;
937 int nidle = 0;
938
939 for (state = winbindd_client_list(); state; state = state->next) {
940 if (client_is_idle(state)) {
941 nidle++;
942 if (!last_access || state->last_access < last_access) {
943 last_access = state->last_access;
944 remove_state = state;
945 }
946 }
947 }
948
949 if (remove_state) {
950 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
951 nidle, remove_state->sock, (unsigned int)remove_state->pid));
952 remove_client(remove_state);
953 return True;
954 }
955
956 return False;
957 }
958
959 struct winbindd_listen_state {
960 bool privileged;
961 int fd;
962 };
963
964 static void winbindd_listen_fde_handler(struct tevent_context *ev,
965 struct tevent_fd *fde,
966 uint16_t flags,
967 void *private_data)
968 {
969 struct winbindd_listen_state *s = talloc_get_type_abort(private_data,
970 struct winbindd_listen_state);
971
972 while (winbindd_num_clients() > lp_winbind_max_clients() - 1) {
973 DEBUG(5,("winbindd: Exceeding %d client "
974 "connections, removing idle "
975 "connection.\n", lp_winbind_max_clients()));
976 if (!remove_idle_client()) {
977 DEBUG(0,("winbindd: Exceeding %d "
978 "client connections, no idle "
979 "connection found\n",
980 lp_winbind_max_clients()));
981 break;
982 }
983 }
984 new_connection(s->fd, s->privileged);
985 }
986
987 /*
988 * Winbindd socket accessor functions
989 */
990
991 const char *get_winbind_pipe_dir(void)
992 {
993 return lp_parm_const_string(-1, "winbindd", "socket dir", get_dyn_WINBINDD_SOCKET_DIR());
994 }
995
996 char *get_winbind_priv_pipe_dir(void)
997 {
998 return state_path(WINBINDD_PRIV_SOCKET_SUBDIR);
999 }
1000
1001 static bool winbindd_setup_listeners(void)
1002 {
1003 struct winbindd_listen_state *pub_state = NULL;
1004 struct winbindd_listen_state *priv_state = NULL;
1005 struct tevent_fd *fde;
1006 int rc;
1007
1008 pub_state = talloc(winbind_event_context(),
1009 struct winbindd_listen_state);
1010 if (!pub_state) {
1011 goto failed;
1012 }
1013
1014 pub_state->privileged = false;
1015 pub_state->fd = create_pipe_sock(
1016 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME, 0755);
1017 if (pub_state->fd == -1) {
1018 goto failed;
1019 }
1020 rc = listen(pub_state->fd, 5);
1021 if (rc < 0) {
1022 goto failed;
1023 }
1024
1025 fde = tevent_add_fd(winbind_event_context(), pub_state, pub_state->fd,
1026 TEVENT_FD_READ, winbindd_listen_fde_handler,
1027 pub_state);
1028 if (fde == NULL) {
1029 close(pub_state->fd);
1030 goto failed;
1031 }
1032 tevent_fd_set_auto_close(fde);
1033
1034 priv_state = talloc(winbind_event_context(),
1035 struct winbindd_listen_state);
1036 if (!priv_state) {
1037 goto failed;
1038 }
1039
1040 priv_state->privileged = true;
1041 priv_state->fd = create_pipe_sock(
1042 get_winbind_priv_pipe_dir(), WINBINDD_SOCKET_NAME, 0750);
1043 if (priv_state->fd == -1) {
1044 goto failed;
1045 }
1046 rc = listen(priv_state->fd, 5);
1047 if (rc < 0) {
1048 goto failed;
1049 }
1050
1051 fde = tevent_add_fd(winbind_event_context(), priv_state,
1052 priv_state->fd, TEVENT_FD_READ,
1053 winbindd_listen_fde_handler, priv_state);
1054 if (fde == NULL) {
1055 close(priv_state->fd);
1056 goto failed;
1057 }
1058 tevent_fd_set_auto_close(fde);
1059
1060 return true;
1061 failed:
1062 TALLOC_FREE(pub_state);
1063 TALLOC_FREE(priv_state);
1064 return false;
1065 }
1066
1067 bool winbindd_use_idmap_cache(void)
1068 {
1069 return !opt_nocache;
1070 }
1071
1072 bool winbindd_use_cache(void)
1073 {
1074 return !opt_nocache;
1075 }
1076
1077 static void winbindd_register_handlers(struct messaging_context *msg_ctx,
1078 bool foreground)
1079 {
1080 /* Setup signal handlers */
1081
1082 if (!winbindd_setup_sig_term_handler(true))
1083 exit(1);
1084 if (!winbindd_setup_stdin_handler(true, foreground))
1085 exit(1);
1086 if (!winbindd_setup_sig_hup_handler(NULL))
1087 exit(1);
1088 if (!winbindd_setup_sig_chld_handler())
1089 exit(1);
1090 if (!winbindd_setup_sig_usr2_handler())
1091 exit(1);
1092
1093 CatchSignal(SIGPIPE, SIG_IGN); /* Ignore sigpipe */
1094
1095 /*
1096 * Ensure all cache and idmap caches are consistent
1097 * and initialized before we startup.
1098 */
1099 if (!winbindd_cache_validate_and_initialize()) {
1100 exit(1);
1101 }
1102
1103 /* get broadcast messages */
1104
1105 if (!serverid_register(messaging_server_id(msg_ctx),
1106 FLAG_MSG_GENERAL |
1107 FLAG_MSG_WINBIND |
1108 FLAG_MSG_DBWRAP)) {
1109 DEBUG(1, ("Could not register myself in serverid.tdb\n"));
1110 exit(1);
1111 }
1112
1113 /* React on 'smbcontrol winbindd reload-config' in the same way
1114 as to SIGHUP signal */
1115 messaging_register(msg_ctx, NULL,
1116 MSG_SMB_CONF_UPDATED, msg_reload_services);
1117 messaging_register(msg_ctx, NULL,
1118 MSG_SHUTDOWN, msg_shutdown);
1119
1120 /* Handle online/offline messages. */
1121 messaging_register(msg_ctx, NULL,
1122 MSG_WINBIND_OFFLINE, winbind_msg_offline);
1123 messaging_register(msg_ctx, NULL,
1124 MSG_WINBIND_ONLINE, winbind_msg_online);
1125 messaging_register(msg_ctx, NULL,
1126 MSG_WINBIND_ONLINESTATUS, winbind_msg_onlinestatus);
1127
1128 messaging_register(msg_ctx, NULL,
1129 MSG_DUMP_EVENT_LIST, winbind_msg_dump_event_list);
1130
1131 messaging_register(msg_ctx, NULL,
1132 MSG_WINBIND_VALIDATE_CACHE,
1133 winbind_msg_validate_cache);
1134
1135 messaging_register(msg_ctx, NULL,
1136 MSG_WINBIND_DUMP_DOMAIN_LIST,
1137 winbind_msg_dump_domain_list);
1138
1139 messaging_register(msg_ctx, NULL,
1140 MSG_WINBIND_IP_DROPPED,
1141 winbind_msg_ip_dropped_parent);
1142
1143 /* Register handler for MSG_DEBUG. */
1144 messaging_register(msg_ctx, NULL,
1145 MSG_DEBUG,
1146 winbind_msg_debug);
1147
1148 netsamlogon_cache_init(); /* Non-critical */
1149
1150 /* clear the cached list of trusted domains */
1151
1152 wcache_tdc_clear();
1153
1154 if (!init_domain_list()) {
1155 DEBUG(0,("unable to initialize domain list\n"));
1156 exit(1);
1157 }
1158
1159 init_idmap_child();
1160 init_locator_child();
1161
1162 smb_nscd_flush_user_cache();
1163 smb_nscd_flush_group_cache();
1164
1165 if (lp_allow_trusted_domains()) {
1166 if (tevent_add_timer(winbind_event_context(), NULL, timeval_zero(),
1167 rescan_trusted_domains, NULL) == NULL) {
1168 DEBUG(0, ("Could not trigger rescan_trusted_domains()\n"));
1169 exit(1);
1170 }
1171 }
1172
1173 }
1174
1175 struct winbindd_addrchanged_state {
1176 struct addrchange_context *ctx;
1177 struct tevent_context *ev;
1178 struct messaging_context *msg_ctx;
1179 };
1180
1181 static void winbindd_addr_changed(struct tevent_req *req);
1182
1183 static void winbindd_init_addrchange(TALLOC_CTX *mem_ctx,
1184 struct tevent_context *ev,
1185 struct messaging_context *msg_ctx)
1186 {
1187 struct winbindd_addrchanged_state *state;
1188 struct tevent_req *req;
1189 NTSTATUS status;
1190
1191 state = talloc(mem_ctx, struct winbindd_addrchanged_state);
1192 if (state == NULL) {
1193 DEBUG(10, ("talloc failed\n"));
1194 return;
1195 }
1196 state->ev = ev;
1197 state->msg_ctx = msg_ctx;
1198
1199 status = addrchange_context_create(state, &state->ctx);
1200 if (!NT_STATUS_IS_OK(status)) {
1201 DEBUG(10, ("addrchange_context_create failed: %s\n",
1202 nt_errstr(status)));
1203 TALLOC_FREE(state);
1204 return;
1205 }
1206 req = addrchange_send(state, ev, state->ctx);
1207 if (req == NULL) {
1208 DEBUG(0, ("addrchange_send failed\n"));
1209 TALLOC_FREE(state);
1210 return;
1211 }
1212 tevent_req_set_callback(req, winbindd_addr_changed, state);
1213 }
1214
1215 static void winbindd_addr_changed(struct tevent_req *req)
1216 {
1217 struct winbindd_addrchanged_state *state = tevent_req_callback_data(
1218 req, struct winbindd_addrchanged_state);
1219 enum addrchange_type type;
1220 struct sockaddr_storage addr;
1221 NTSTATUS status;
1222
1223 status = addrchange_recv(req, &type, &addr);
1224 TALLOC_FREE(req);
1225 if (!NT_STATUS_IS_OK(status)) {
1226 DEBUG(10, ("addrchange_recv failed: %s, stop listening\n",
1227 nt_errstr(status)));
1228 TALLOC_FREE(state);
1229 return;
1230 }
1231 if (type == ADDRCHANGE_DEL) {
1232 char addrstr[INET6_ADDRSTRLEN];
1233 DATA_BLOB blob;
1234
1235 print_sockaddr(addrstr, sizeof(addrstr), &addr);
1236
1237 DEBUG(3, ("winbindd: kernel (AF_NETLINK) dropped ip %s\n",
1238 addrstr));
1239
1240 blob = data_blob_const(addrstr, strlen(addrstr)+1);
1241
1242 status = messaging_send(state->msg_ctx,
1243 messaging_server_id(state->msg_ctx),
1244 MSG_WINBIND_IP_DROPPED, &blob);
1245 if (!NT_STATUS_IS_OK(status)) {
1246 DEBUG(10, ("messaging_send failed: %s - ignoring\n",
1247 nt_errstr(status)));
1248 }
1249 }
1250 req = addrchange_send(state, state->ev, state->ctx);
1251 if (req == NULL) {
1252 DEBUG(0, ("addrchange_send failed\n"));
1253 TALLOC_FREE(state);
1254 return;
1255 }
1256 tevent_req_set_callback(req, winbindd_addr_changed, state);
1257 }
1258
1259 /* Main function */
1260
1261 int main(int argc, char **argv, char **envp)
1262 {
1263 static bool is_daemon = False;
1264 static bool Fork = True;
1265 static bool log_stdout = False;
1266 static bool no_process_group = False;
1267 enum {
1268 OPT_DAEMON = 1000,
1269 OPT_FORK,
1270 OPT_NO_PROCESS_GROUP,
1271 OPT_LOG_STDOUT
1272 };
1273 struct poptOption long_options[] = {
1274 POPT_AUTOHELP
1275 { "stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1276 { "foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Daemon in foreground mode" },
1277 { "no-process-group", 0, POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1278 { "daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1279 { "interactive", 'i', POPT_ARG_NONE, NULL, 'i', "Interactive mode" },
1280 { "no-caching", 'n', POPT_ARG_NONE, NULL, 'n', "Disable caching" },
1281 POPT_COMMON_SAMBA
1282 POPT_TABLEEND
1283 };
1284 poptContext pc;
1285 int opt;
1286 TALLOC_CTX *frame;
1287 NTSTATUS status;
1288
1289 /*
1290 * Do this before any other talloc operation
1291 */
1292 talloc_enable_null_tracking();
1293 frame = talloc_stackframe();
1294
1295 setup_logging("winbindd", DEBUG_DEFAULT_STDOUT);
1296
1297 /* glibc (?) likes to print "User defined signal 1" and exit if a
1298 SIGUSR[12] is received before a handler is installed */
1299
1300 CatchSignal(SIGUSR1, SIG_IGN);
1301 CatchSignal(SIGUSR2, SIG_IGN);
1302
1303 fault_setup();
1304 dump_core_setup("winbindd", lp_logfile(talloc_tos()));
1305
1306 load_case_tables();
1307
1308 /* Initialise for running in non-root mode */
1309
1310 sec_init();
1311
1312 set_remote_machine_name("winbindd", False);
1313
1314 /* Set environment variable so we don't recursively call ourselves.
1315 This may also be useful interactively. */
1316
1317 if ( !winbind_off() ) {
1318 DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
1319 exit(1);
1320 }
1321
1322 /* Initialise samba/rpc client stuff */
1323
1324 pc = poptGetContext("winbindd", argc, (const char **)argv, long_options, 0);
1325
1326 while ((opt = poptGetNextOpt(pc)) != -1) {
1327 switch (opt) {
1328 /* Don't become a daemon */
1329 case OPT_DAEMON:
1330 is_daemon = True;
1331 break;
1332 case 'i':
1333 interactive = True;
1334 log_stdout = True;
1335 Fork = False;
1336 break;
1337 case OPT_FORK:
1338 Fork = false;
1339 break;
1340 case OPT_NO_PROCESS_GROUP:
1341 no_process_group = true;
1342 break;
1343 case OPT_LOG_STDOUT:
1344 log_stdout = true;
1345 break;
1346 case 'n':
1347 opt_nocache = true;
1348 break;
1349 default:
1350 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1351 poptBadOption(pc, 0), poptStrerror(opt));
1352 poptPrintUsage(pc, stderr, 0);
1353 exit(1);
1354 }
1355 }
1356
1357 /* We call dump_core_setup one more time because the command line can
1358 * set the log file or the log-basename and this will influence where
1359 * cores are stored. Without this call get_dyn_LOGFILEBASE will be
1360 * the default value derived from build's prefix. For EOM this value
1361 * is often not related to the path where winbindd is actually run
1362 * in production.
1363 */
1364 dump_core_setup("winbindd", lp_logfile(talloc_tos()));
1365 if (is_daemon && interactive) {
1366 d_fprintf(stderr,"\nERROR: "
1367 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
1368 poptPrintUsage(pc, stderr, 0);
1369 exit(1);
1370 }
1371
1372 if (log_stdout && Fork) {
1373 d_fprintf(stderr, "\nERROR: "
1374 "Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n\n");
1375 poptPrintUsage(pc, stderr, 0);
1376 exit(1);
1377 }
1378
1379 poptFreeContext(pc);
1380
1381 if (!override_logfile) {
1382 char *lfile = NULL;
1383 if (asprintf(&lfile,"%s/log.winbindd",
1384 get_dyn_LOGFILEBASE()) > 0) {
1385 lp_set_logfile(lfile);
1386 SAFE_FREE(lfile);
1387 }
1388 }
1389
1390 if (log_stdout) {
1391 setup_logging("winbindd", DEBUG_STDOUT);
1392 } else {
1393 setup_logging("winbindd", DEBUG_FILE);
1394 }
1395 reopen_logs();
1396
1397 DEBUG(0,("winbindd version %s started.\n", samba_version_string()));
1398 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1399
1400 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1401 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1402 exit(1);
1403 }
1404 /* After parsing the configuration file we setup the core path one more time
1405 * as the log file might have been set in the configuration and cores's
1406 * path is by default basename(lp_logfile()).
1407 */
1408 dump_core_setup("winbindd", lp_logfile(talloc_tos()));
1409
1410 if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC) {
1411 DEBUG(0, ("server role = 'active directory domain controller' not compatible with running the winbindd binary. \n"));
1412 DEBUGADD(0, ("You should start 'samba' instead, and it will control starting the internal AD DC winbindd implementation, which is not the same as this one\n"));
1413 exit(1);
1414 }
1415
1416 /* Initialise messaging system */
1417
1418 if (winbind_messaging_context() == NULL) {
1419 exit(1);
1420 }
1421
1422 if (!reload_services_file(NULL)) {
1423 DEBUG(0, ("error opening config file\n"));
1424 exit(1);
1425 }
1426
1427 if (!directory_exist(lp_lockdir())) {
1428 mkdir(lp_lockdir(), 0755);
1429 }
1430
1431 if (!directory_exist(lp_piddir())) {
1432 mkdir(lp_piddir(), 0755);
1433 }
1434
1435 /* Setup names. */
1436
1437 if (!init_names())
1438 exit(1);
1439
1440 load_interfaces();
1441
1442 if (!secrets_init()) {
1443
1444 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1445 return False;
1446 }
1447
1448 /* Unblock all signals we are interested in as they may have been
1449 blocked by the parent process. */
1450
1451 BlockSignals(False, SIGINT);
1452 BlockSignals(False, SIGQUIT);
1453 BlockSignals(False, SIGTERM);
1454 BlockSignals(False, SIGUSR1);
1455 BlockSignals(False, SIGUSR2);
1456 BlockSignals(False, SIGHUP);
1457 BlockSignals(False, SIGCHLD);
1458
1459 if (!interactive)
1460 become_daemon(Fork, no_process_group, log_stdout);
1461
1462 pidfile_create(lp_piddir(), "winbindd");
1463
1464 #if HAVE_SETPGID
1465 /*
1466 * If we're interactive we want to set our own process group for
1467 * signal management.
1468 */
1469 if (interactive && !no_process_group)
1470 setpgid( (pid_t)0, (pid_t)0);
1471 #endif
1472
1473 TimeInit();
1474
1475 /* Don't use winbindd_reinit_after_fork here as
1476 * we're just starting up and haven't created any
1477 * winbindd-specific resources we must free yet. JRA.
1478 */
1479
1480 status = reinit_after_fork(winbind_messaging_context(),
1481 winbind_event_context(),
1482 false);
1483 if (!NT_STATUS_IS_OK(status)) {
1484 DEBUG(0,("reinit_after_fork() failed\n"));
1485 exit(1);
1486 }
1487
1488 /*
1489 * Do not initialize the parent-child-pipe before becoming
1490 * a daemon: this is used to detect a died parent in the child
1491 * process.
1492 */
1493 status = init_before_fork();
1494 if (!NT_STATUS_IS_OK(status)) {
1495 DEBUG(0, ("init_before_fork failed: %s\n", nt_errstr(status)));
1496 exit(1);
1497 }
1498
1499 winbindd_register_handlers(winbind_messaging_context(), !Fork);
1500
1501 status = init_system_session_info();
1502 if (!NT_STATUS_IS_OK(status)) {
1503 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1504 nt_errstr(status)));
1505 exit(1);
1506 }
1507
1508 rpc_lsarpc_init(NULL);
1509 rpc_samr_init(NULL);
1510
1511 winbindd_init_addrchange(NULL, winbind_event_context(),
1512 winbind_messaging_context());
1513
1514 /* setup listen sockets */
1515
1516 if (!winbindd_setup_listeners()) {
1517 DEBUG(0,("winbindd_setup_listeners() failed\n"));
1518 exit(1);
1519 }
1520
1521 TALLOC_FREE(frame);
1522 /* Loop waiting for requests */
1523 while (1) {
1524 frame = talloc_stackframe();
1525
1526 if (tevent_loop_once(winbind_event_context()) == -1) {
1527 DEBUG(1, ("tevent_loop_once() failed: %s\n",
1528 strerror(errno)));
1529 return 1;
1530 }
1531
1532 TALLOC_FREE(frame);
1533 }
1534
1535 return 0;
1536 }
reg import