2 Unix SMB/CIFS implementation.
6 Copyright (C) Andrew Tridgell 2002
7 Copyright (C) Volker Lendecke 2004,2005
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * We fork a child per domain to be able to act non-blocking in the main
25 * winbind daemon. A domain controller thousands of miles away being being
26 * slow replying with a 10.000 user list should not hold up netlogon calls
27 * that can be handled locally.
34 #define DBGC_CLASS DBGC_WINBIND
36 extern BOOL override_logfile;
38 /* Read some data from a client connection */
40 static void child_read_request(struct winbindd_cli_state *state)
46 len = read_data(state->sock, (char *)&state->request,
47 sizeof(state->request));
49 if (len != sizeof(state->request)) {
50 DEBUG(len > 0 ? 0 : 3, ("Got invalid request length: %d\n", (int)len));
51 state->finished = True;
55 if (state->request.extra_len == 0) {
56 state->request.extra_data.data = NULL;
60 DEBUG(10, ("Need to read %d extra bytes\n", (int)state->request.extra_len));
62 state->request.extra_data.data =
63 SMB_MALLOC_ARRAY(char, state->request.extra_len + 1);
65 if (state->request.extra_data.data == NULL) {
66 DEBUG(0, ("malloc failed\n"));
67 state->finished = True;
71 /* Ensure null termination */
72 state->request.extra_data.data[state->request.extra_len] = '\0';
74 len = read_data(state->sock, state->request.extra_data.data,
75 state->request.extra_len);
77 if (len != state->request.extra_len) {
78 DEBUG(0, ("Could not read extra data\n"));
79 state->finished = True;
85 * Machinery for async requests sent to children. You set up a
86 * winbindd_request, select a child to query, and issue a async_request
87 * call. When the request is completed, the callback function you specified is
88 * called back with the private pointer you gave to async_request.
91 struct winbindd_async_request {
92 struct winbindd_async_request *next, *prev;
94 struct winbindd_child *child;
95 struct winbindd_request *request;
96 struct winbindd_response *response;
97 void (*continuation)(void *private_data, BOOL success);
98 struct timed_event *reply_timeout_event;
99 pid_t child_pid; /* pid of the child we're waiting on. Used to detect
100 a restart of the child (child->pid != child_pid). */
104 static void async_main_request_sent(void *private_data, BOOL success);
105 static void async_request_sent(void *private_data, BOOL success);
106 static void async_reply_recv(void *private_data, BOOL success);
107 static void schedule_async_request(struct winbindd_child *child);
109 void async_request(TALLOC_CTX *mem_ctx, struct winbindd_child *child,
110 struct winbindd_request *request,
111 struct winbindd_response *response,
112 void (*continuation)(void *private_data, BOOL success),
115 struct winbindd_async_request *state;
117 SMB_ASSERT(continuation != NULL);
119 state = TALLOC_P(mem_ctx, struct winbindd_async_request);
122 DEBUG(0, ("talloc failed\n"));
123 continuation(private_data, False);
127 state->mem_ctx = mem_ctx;
128 state->child = child;
129 state->request = request;
130 state->response = response;
131 state->continuation = continuation;
132 state->private_data = private_data;
134 DLIST_ADD_END(child->requests, state, struct winbindd_async_request *);
136 schedule_async_request(child);
141 static void async_main_request_sent(void *private_data, BOOL success)
143 struct winbindd_async_request *state =
144 talloc_get_type_abort(private_data, struct winbindd_async_request);
147 DEBUG(5, ("Could not send async request\n"));
149 state->response->length = sizeof(struct winbindd_response);
150 state->response->result = WINBINDD_ERROR;
151 state->continuation(state->private_data, False);
155 if (state->request->extra_len == 0) {
156 async_request_sent(private_data, True);
160 setup_async_write(&state->child->event, state->request->extra_data.data,
161 state->request->extra_len,
162 async_request_sent, state);
165 /****************************************************************
166 Handler triggered if the child winbindd doesn't respond within
168 ****************************************************************/
170 static void async_request_timeout_handler(struct event_context *ctx,
171 struct timed_event *te,
172 const struct timeval *now,
175 struct winbindd_async_request *state =
176 talloc_get_type_abort(private_data, struct winbindd_async_request);
178 DEBUG(0,("async_request_timeout_handler: child pid %u is not responding. "
179 "Closing connection to it.\n",
182 /* Deal with the reply - set to error. */
183 async_reply_recv(private_data, False);
186 /**************************************************************
187 Common function called on both async send and recv fail.
188 Cleans up the child and schedules the next request.
189 **************************************************************/
191 static void async_request_fail(struct winbindd_async_request *state)
193 DLIST_REMOVE(state->child->requests, state);
195 TALLOC_FREE(state->reply_timeout_event);
197 SMB_ASSERT(state->child_pid != (pid_t)0);
199 /* If not already reaped, send kill signal to child. */
200 if (state->child->pid == state->child_pid) {
201 kill(state->child_pid, SIGTERM);
204 * Close the socket to the child.
206 winbind_child_died(state->child_pid);
209 state->response->length = sizeof(struct winbindd_response);
210 state->response->result = WINBINDD_ERROR;
211 state->continuation(state->private_data, False);
214 static void async_request_sent(void *private_data_data, BOOL success)
216 struct winbindd_async_request *state =
217 talloc_get_type_abort(private_data_data, struct winbindd_async_request);
220 DEBUG(5, ("Could not send async request to child pid %u\n",
221 (unsigned int)state->child_pid ));
222 async_request_fail(state);
226 /* Request successfully sent to the child, setup the wait for reply */
228 setup_async_read(&state->child->event,
229 &state->response->result,
230 sizeof(state->response->result),
231 async_reply_recv, state);
234 * Set up a timeout of 300 seconds for the response.
235 * If we don't get it close the child socket and
239 state->reply_timeout_event = event_add_timed(winbind_event_context(),
241 timeval_current_ofs(300,0),
242 "async_request_timeout",
243 async_request_timeout_handler,
245 if (!state->reply_timeout_event) {
246 smb_panic("async_request_sent: failed to add timeout handler.\n");
250 static void async_reply_recv(void *private_data, BOOL success)
252 struct winbindd_async_request *state =
253 talloc_get_type_abort(private_data, struct winbindd_async_request);
254 struct winbindd_child *child = state->child;
256 TALLOC_FREE(state->reply_timeout_event);
258 state->response->length = sizeof(struct winbindd_response);
261 DEBUG(5, ("Could not receive async reply from child pid %u\n",
262 (unsigned int)state->child_pid ));
264 cache_cleanup_response(state->child_pid);
265 async_request_fail(state);
269 SMB_ASSERT(cache_retrieve_response(state->child_pid,
272 cache_cleanup_response(state->child_pid);
274 DLIST_REMOVE(child->requests, state);
276 schedule_async_request(child);
278 state->continuation(state->private_data, True);
281 static BOOL fork_domain_child(struct winbindd_child *child);
283 static void schedule_async_request(struct winbindd_child *child)
285 struct winbindd_async_request *request = child->requests;
287 if (request == NULL) {
291 if (child->event.flags != 0) {
295 if ((child->pid == 0) && (!fork_domain_child(child))) {
296 /* Cancel all outstanding requests */
298 while (request != NULL) {
299 /* request might be free'd in the continuation */
300 struct winbindd_async_request *next = request->next;
301 request->continuation(request->private_data, False);
307 /* Now we know who we're sending to - remember the pid. */
308 request->child_pid = child->pid;
310 setup_async_write(&child->event, request->request,
311 sizeof(*request->request),
312 async_main_request_sent, request);
317 struct domain_request_state {
319 struct winbindd_domain *domain;
320 struct winbindd_request *request;
321 struct winbindd_response *response;
322 void (*continuation)(void *private_data_data, BOOL success);
323 void *private_data_data;
326 static void domain_init_recv(void *private_data_data, BOOL success);
328 void async_domain_request(TALLOC_CTX *mem_ctx,
329 struct winbindd_domain *domain,
330 struct winbindd_request *request,
331 struct winbindd_response *response,
332 void (*continuation)(void *private_data_data, BOOL success),
333 void *private_data_data)
335 struct domain_request_state *state;
337 if (domain->initialized) {
338 async_request(mem_ctx, &domain->child, request, response,
339 continuation, private_data_data);
343 state = TALLOC_P(mem_ctx, struct domain_request_state);
345 DEBUG(0, ("talloc failed\n"));
346 continuation(private_data_data, False);
350 state->mem_ctx = mem_ctx;
351 state->domain = domain;
352 state->request = request;
353 state->response = response;
354 state->continuation = continuation;
355 state->private_data_data = private_data_data;
357 init_child_connection(domain, domain_init_recv, state);
360 static void domain_init_recv(void *private_data_data, BOOL success)
362 struct domain_request_state *state =
363 talloc_get_type_abort(private_data_data, struct domain_request_state);
366 DEBUG(5, ("Domain init returned an error\n"));
367 state->continuation(state->private_data_data, False);
371 async_request(state->mem_ctx, &state->domain->child,
372 state->request, state->response,
373 state->continuation, state->private_data_data);
376 static void recvfrom_child(void *private_data_data, BOOL success)
378 struct winbindd_cli_state *state =
379 talloc_get_type_abort(private_data_data, struct winbindd_cli_state);
380 enum winbindd_result result = state->response.result;
382 /* This is an optimization: The child has written directly to the
383 * response buffer. The request itself is still in pending state,
384 * state that in the result code. */
386 state->response.result = WINBINDD_PENDING;
388 if ((!success) || (result != WINBINDD_OK)) {
389 request_error(state);
396 void sendto_child(struct winbindd_cli_state *state,
397 struct winbindd_child *child)
399 async_request(state->mem_ctx, child, &state->request,
400 &state->response, recvfrom_child, state);
403 void sendto_domain(struct winbindd_cli_state *state,
404 struct winbindd_domain *domain)
406 async_domain_request(state->mem_ctx, domain,
407 &state->request, &state->response,
408 recvfrom_child, state);
411 const struct winbindd_child_dispatch_table domain_dispatch_table[] = {
413 { WINBINDD_LOOKUPSID, winbindd_dual_lookupsid, "LOOKUPSID" },
414 { WINBINDD_LOOKUPNAME, winbindd_dual_lookupname, "LOOKUPNAME" },
415 { WINBINDD_LOOKUPRIDS, winbindd_dual_lookuprids, "LOOKUPRIDS" },
416 { WINBINDD_LIST_TRUSTDOM, winbindd_dual_list_trusted_domains, "LIST_TRUSTDOM" },
417 { WINBINDD_INIT_CONNECTION, winbindd_dual_init_connection, "INIT_CONNECTION" },
418 { WINBINDD_GETDCNAME, winbindd_dual_getdcname, "GETDCNAME" },
419 { WINBINDD_SHOW_SEQUENCE, winbindd_dual_show_sequence, "SHOW_SEQUENCE" },
420 { WINBINDD_PAM_AUTH, winbindd_dual_pam_auth, "PAM_AUTH" },
421 { WINBINDD_PAM_AUTH_CRAP, winbindd_dual_pam_auth_crap, "AUTH_CRAP" },
422 { WINBINDD_PAM_LOGOFF, winbindd_dual_pam_logoff, "PAM_LOGOFF" },
423 { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP,winbindd_dual_pam_chng_pswd_auth_crap,"CHNG_PSWD_AUTH_CRAP" },
424 { WINBINDD_PAM_CHAUTHTOK, winbindd_dual_pam_chauthtok, "PAM_CHAUTHTOK" },
425 { WINBINDD_CHECK_MACHACC, winbindd_dual_check_machine_acct, "CHECK_MACHACC" },
426 { WINBINDD_DUAL_USERINFO, winbindd_dual_userinfo, "DUAL_USERINFO" },
427 { WINBINDD_GETUSERDOMGROUPS, winbindd_dual_getuserdomgroups, "GETUSERDOMGROUPS" },
428 { WINBINDD_DUAL_GETSIDALIASES, winbindd_dual_getsidaliases, "GETSIDALIASES" },
429 { WINBINDD_CCACHE_NTLMAUTH, winbindd_dual_ccache_ntlm_auth, "CCACHE_NTLM_AUTH" },
432 { WINBINDD_NUM_CMDS, NULL, "NONE" }
435 static void child_process_request(struct winbindd_child *child,
436 struct winbindd_cli_state *state)
438 struct winbindd_domain *domain = child->domain;
439 const struct winbindd_child_dispatch_table *table = child->table;
441 /* Free response data - we may be interrupted and receive another
442 command before being able to send this data off. */
444 state->response.result = WINBINDD_ERROR;
445 state->response.length = sizeof(struct winbindd_response);
447 /* as all requests in the child are sync, we can use talloc_tos() */
448 state->mem_ctx = talloc_tos();
450 /* Process command */
452 for (; table->fn; table++) {
453 if (state->request.cmd == table->cmd) {
454 DEBUG(10,("process_request: request fn %s\n",
455 table->winbindd_cmd_name ));
456 state->response.result = table->fn(domain, state);
462 DEBUG(1 ,("child_process_request: unknown request fn number %d\n",
463 (int)state->request.cmd ));
464 state->response.result = WINBINDD_ERROR;
468 void setup_domain_child(struct winbindd_domain *domain,
469 struct winbindd_child *child,
470 const struct winbindd_child_dispatch_table *table,
471 const char *explicit_logfile)
473 if (explicit_logfile != NULL) {
474 pstr_sprintf(child->logfilename, "%s/log.winbindd-%s",
475 dyn_LOGFILEBASE, explicit_logfile);
476 } else if (domain != NULL) {
477 pstr_sprintf(child->logfilename, "%s/log.wb-%s",
478 dyn_LOGFILEBASE, domain->name);
480 smb_panic("Internal error: domain == NULL && "
481 "explicit_logfile == NULL");
484 child->domain = domain;
485 child->table = table;
488 struct winbindd_child *children = NULL;
490 void winbind_child_died(pid_t pid)
492 struct winbindd_child *child;
494 for (child = children; child != NULL; child = child->next) {
495 if (child->pid == pid) {
501 DEBUG(5, ("Already reaped child %u died\n", (unsigned int)pid));
505 remove_fd_event(&child->event);
506 close(child->event.fd);
508 child->event.flags = 0;
511 schedule_async_request(child);
514 /* Ensure any negative cache entries with the netbios or realm names are removed. */
516 void winbindd_flush_negative_conn_cache(struct winbindd_domain *domain)
518 flush_negative_conn_cache_for_domain(domain->name);
519 if (*domain->alt_name) {
520 flush_negative_conn_cache_for_domain(domain->alt_name);
524 /* Set our domains as offline and forward the offline message to our children. */
526 void winbind_msg_offline(struct messaging_context *msg_ctx,
529 struct server_id server_id,
532 struct winbindd_child *child;
533 struct winbindd_domain *domain;
535 DEBUG(10,("winbind_msg_offline: got offline message.\n"));
537 if (!lp_winbind_offline_logon()) {
538 DEBUG(10,("winbind_msg_offline: rejecting offline message.\n"));
542 /* Set our global state as offline. */
543 if (!set_global_winbindd_state_offline()) {
544 DEBUG(10,("winbind_msg_offline: offline request failed.\n"));
548 /* Set all our domains as offline. */
549 for (domain = domain_list(); domain; domain = domain->next) {
550 if (domain->internal) {
553 DEBUG(5,("winbind_msg_offline: marking %s offline.\n", domain->name));
554 set_domain_offline(domain);
557 for (child = children; child != NULL; child = child->next) {
558 /* Don't send message to internal childs. We've already
560 if (!child->domain || winbindd_internal_child(child)) {
564 /* Or internal domains (this should not be possible....) */
565 if (child->domain->internal) {
569 /* Each winbindd child should only process requests for one domain - make sure
570 we only set it online / offline for that domain. */
572 DEBUG(10,("winbind_msg_offline: sending message to pid %u for domain %s.\n",
573 (unsigned int)child->pid, domain->name ));
575 messaging_send_buf(msg_ctx, pid_to_procid(child->pid),
577 (uint8 *)child->domain->name,
578 strlen(child->domain->name)+1);
582 /* Set our domains as online and forward the online message to our children. */
584 void winbind_msg_online(struct messaging_context *msg_ctx,
587 struct server_id server_id,
590 struct winbindd_child *child;
591 struct winbindd_domain *domain;
593 DEBUG(10,("winbind_msg_online: got online message.\n"));
595 if (!lp_winbind_offline_logon()) {
596 DEBUG(10,("winbind_msg_online: rejecting online message.\n"));
600 /* Set our global state as online. */
601 set_global_winbindd_state_online();
603 smb_nscd_flush_user_cache();
604 smb_nscd_flush_group_cache();
606 /* Set all our domains as online. */
607 for (domain = domain_list(); domain; domain = domain->next) {
608 if (domain->internal) {
611 DEBUG(5,("winbind_msg_online: requesting %s to go online.\n", domain->name));
613 winbindd_flush_negative_conn_cache(domain);
614 set_domain_online_request(domain);
616 /* Send an online message to the idmap child when our
617 primary domain comes back online */
619 if ( domain->primary ) {
620 struct winbindd_child *idmap = idmap_child();
622 if ( idmap->pid != 0 ) {
623 messaging_send_buf(msg_ctx,
624 pid_to_procid(idmap->pid),
626 (uint8 *)domain->name,
627 strlen(domain->name)+1);
633 for (child = children; child != NULL; child = child->next) {
634 /* Don't send message to internal childs. */
635 if (!child->domain || winbindd_internal_child(child)) {
639 /* Or internal domains (this should not be possible....) */
640 if (child->domain->internal) {
644 /* Each winbindd child should only process requests for one domain - make sure
645 we only set it online / offline for that domain. */
647 DEBUG(10,("winbind_msg_online: sending message to pid %u for domain %s.\n",
648 (unsigned int)child->pid, child->domain->name ));
650 messaging_send_buf(msg_ctx, pid_to_procid(child->pid),
652 (uint8 *)child->domain->name,
653 strlen(child->domain->name)+1);
657 /* Forward the online/offline messages to our children. */
658 void winbind_msg_onlinestatus(struct messaging_context *msg_ctx,
661 struct server_id server_id,
664 struct winbindd_child *child;
666 DEBUG(10,("winbind_msg_onlinestatus: got onlinestatus message.\n"));
668 for (child = children; child != NULL; child = child->next) {
669 if (child->domain && child->domain->primary) {
670 DEBUG(10,("winbind_msg_onlinestatus: "
671 "sending message to pid %u of primary domain.\n",
672 (unsigned int)child->pid));
673 messaging_send_buf(msg_ctx, pid_to_procid(child->pid),
674 MSG_WINBIND_ONLINESTATUS,
682 void winbind_msg_dump_event_list(struct messaging_context *msg_ctx,
685 struct server_id server_id,
688 struct winbindd_child *child;
690 DEBUG(10,("winbind_msg_dump_event_list received\n"));
692 dump_event_list(winbind_event_context());
694 for (child = children; child != NULL; child = child->next) {
696 DEBUG(10,("winbind_msg_dump_event_list: sending message to pid %u\n",
697 (unsigned int)child->pid));
699 messaging_send_buf(msg_ctx, pid_to_procid(child->pid),
706 static void account_lockout_policy_handler(struct event_context *ctx,
707 struct timed_event *te,
708 const struct timeval *now,
711 struct winbindd_child *child =
712 (struct winbindd_child *)private_data;
713 TALLOC_CTX *mem_ctx = NULL;
714 struct winbindd_methods *methods;
715 SAM_UNK_INFO_12 lockout_policy;
718 DEBUG(10,("account_lockout_policy_handler called\n"));
720 TALLOC_FREE(child->lockout_policy_event);
722 if ( !winbindd_can_contact_domain( child->domain ) ) {
723 DEBUG(10,("account_lockout_policy_handler: Removing myself since I "
724 "do not have an incoming trust to domain %s\n",
725 child->domain->name));
730 methods = child->domain->methods;
732 mem_ctx = talloc_init("account_lockout_policy_handler ctx");
734 result = NT_STATUS_NO_MEMORY;
736 result = methods->lockout_policy(child->domain, mem_ctx, &lockout_policy);
738 TALLOC_FREE(mem_ctx);
740 if (!NT_STATUS_IS_OK(result)) {
741 DEBUG(10,("account_lockout_policy_handler: lockout_policy failed error %s\n",
745 child->lockout_policy_event = event_add_timed(winbind_event_context(), NULL,
746 timeval_current_ofs(3600, 0),
747 "account_lockout_policy_handler",
748 account_lockout_policy_handler,
752 /* Deal with a request to go offline. */
754 static void child_msg_offline(struct messaging_context *msg,
757 struct server_id server_id,
760 struct winbindd_domain *domain;
761 const char *domainname = (const char *)data->data;
763 if (data->data == NULL || data->length == 0) {
767 DEBUG(5,("child_msg_offline received for domain %s.\n", domainname));
769 if (!lp_winbind_offline_logon()) {
770 DEBUG(10,("child_msg_offline: rejecting offline message.\n"));
774 /* Mark the requested domain offline. */
776 for (domain = domain_list(); domain; domain = domain->next) {
777 if (domain->internal) {
780 if (strequal(domain->name, domainname)) {
781 DEBUG(5,("child_msg_offline: marking %s offline.\n", domain->name));
782 set_domain_offline(domain);
787 /* Deal with a request to go online. */
789 static void child_msg_online(struct messaging_context *msg,
792 struct server_id server_id,
795 struct winbindd_domain *domain;
796 const char *domainname = (const char *)data->data;
798 if (data->data == NULL || data->length == 0) {
802 DEBUG(5,("child_msg_online received for domain %s.\n", domainname));
804 if (!lp_winbind_offline_logon()) {
805 DEBUG(10,("child_msg_online: rejecting online message.\n"));
809 /* Set our global state as online. */
810 set_global_winbindd_state_online();
812 /* Try and mark everything online - delete any negative cache entries
813 to force a reconnect now. */
815 for (domain = domain_list(); domain; domain = domain->next) {
816 if (domain->internal) {
819 if (strequal(domain->name, domainname)) {
820 DEBUG(5,("child_msg_online: requesting %s to go online.\n", domain->name));
821 winbindd_flush_negative_conn_cache(domain);
822 set_domain_online_request(domain);
827 static const char *collect_onlinestatus(TALLOC_CTX *mem_ctx)
829 struct winbindd_domain *domain;
832 if ((buf = talloc_asprintf(mem_ctx, "global:%s ",
833 get_global_winbindd_state_offline() ?
834 "Offline":"Online")) == NULL) {
838 for (domain = domain_list(); domain; domain = domain->next) {
839 if ((buf = talloc_asprintf_append_buffer(buf, "%s:%s ",
842 "Online":"Offline")) == NULL) {
847 buf = talloc_asprintf_append_buffer(buf, "\n");
849 DEBUG(5,("collect_onlinestatus: %s", buf));
854 static void child_msg_onlinestatus(struct messaging_context *msg_ctx,
857 struct server_id server_id,
862 struct server_id *sender;
864 DEBUG(5,("winbind_msg_onlinestatus received.\n"));
870 sender = (struct server_id *)data->data;
872 mem_ctx = talloc_init("winbind_msg_onlinestatus");
873 if (mem_ctx == NULL) {
877 message = collect_onlinestatus(mem_ctx);
878 if (message == NULL) {
879 talloc_destroy(mem_ctx);
883 messaging_send_buf(msg_ctx, *sender, MSG_WINBIND_ONLINESTATUS,
884 (uint8 *)message, strlen(message) + 1);
886 talloc_destroy(mem_ctx);
889 static void child_msg_dump_event_list(struct messaging_context *msg,
892 struct server_id server_id,
895 DEBUG(5,("child_msg_dump_event_list received\n"));
897 dump_event_list(winbind_event_context());
901 static BOOL fork_domain_child(struct winbindd_child *child)
904 struct winbindd_cli_state state;
905 struct winbindd_domain *domain;
907 if (socketpair(AF_UNIX, SOCK_STREAM, 0, fdpair) != 0) {
908 DEBUG(0, ("Could not open child pipe: %s\n",
914 state.pid = sys_getpid();
919 child->pid = sys_fork();
921 if (child->pid == -1) {
922 DEBUG(0, ("Could not fork: %s\n", strerror(errno)));
926 if (child->pid != 0) {
929 child->next = child->prev = NULL;
930 DLIST_ADD(children, child);
931 child->event.fd = fdpair[1];
932 child->event.flags = 0;
933 child->requests = NULL;
934 add_fd_event(&child->event);
940 state.sock = fdpair[0];
943 /* tdb needs special fork handling */
944 if (tdb_reopen_all(1) == -1) {
945 DEBUG(0,("tdb_reopen_all failed.\n"));
949 close_conns_after_fork();
951 if (!override_logfile) {
952 lp_set_logfile(child->logfilename);
957 * For clustering, we need to re-init our ctdbd connection after the
960 if (!NT_STATUS_IS_OK(messaging_reinit(winbind_messaging_context())))
963 /* Don't handle the same messages as our parent. */
964 messaging_deregister(winbind_messaging_context(),
965 MSG_SMB_CONF_UPDATED, NULL);
966 messaging_deregister(winbind_messaging_context(),
968 messaging_deregister(winbind_messaging_context(),
969 MSG_WINBIND_OFFLINE, NULL);
970 messaging_deregister(winbind_messaging_context(),
971 MSG_WINBIND_ONLINE, NULL);
972 messaging_deregister(winbind_messaging_context(),
973 MSG_WINBIND_ONLINESTATUS, NULL);
974 messaging_deregister(winbind_messaging_context(),
975 MSG_DUMP_EVENT_LIST, NULL);
977 /* Handle online/offline messages. */
978 messaging_register(winbind_messaging_context(), NULL,
979 MSG_WINBIND_OFFLINE, child_msg_offline);
980 messaging_register(winbind_messaging_context(), NULL,
981 MSG_WINBIND_ONLINE, child_msg_online);
982 messaging_register(winbind_messaging_context(), NULL,
983 MSG_WINBIND_ONLINESTATUS, child_msg_onlinestatus);
984 messaging_register(winbind_messaging_context(), NULL,
985 MSG_DUMP_EVENT_LIST, child_msg_dump_event_list);
987 if ( child->domain ) {
988 child->domain->startup = True;
989 child->domain->startup_time = time(NULL);
992 /* Ensure we have no pending check_online events other
993 than one for this domain. */
995 for (domain = domain_list(); domain; domain = domain->next) {
996 if (domain != child->domain) {
997 TALLOC_FREE(domain->check_online_event);
1001 /* Ensure we're not handling an event inherited from
1004 cancel_named_event(winbind_event_context(),
1005 "krb5_ticket_refresh_handler");
1007 /* We might be in the idmap child...*/
1008 if (child->domain && !(child->domain->internal) &&
1009 lp_winbind_offline_logon()) {
1011 set_domain_online_request(child->domain);
1013 child->lockout_policy_event = event_add_timed(
1014 winbind_event_context(), NULL, timeval_zero(),
1015 "account_lockout_policy_handler",
1016 account_lockout_policy_handler,
1027 TALLOC_CTX *frame = talloc_stackframe();
1029 run_events(winbind_event_context(), 0, NULL, NULL);
1033 if (child->domain && child->domain->startup &&
1034 (now.tv_sec > child->domain->startup_time + 30)) {
1035 /* No longer in "startup" mode. */
1036 DEBUG(10,("fork_domain_child: domain %s no longer in 'startup' mode.\n",
1037 child->domain->name ));
1038 child->domain->startup = False;
1041 tp = get_timed_events_timeout(winbind_event_context(), &t);
1043 DEBUG(11,("select will use timeout of %u.%u seconds\n",
1044 (unsigned int)tp->tv_sec, (unsigned int)tp->tv_usec ));
1047 /* Handle messages */
1049 message_dispatch(winbind_messaging_context());
1052 FD_SET(state.sock, &read_fds);
1054 ret = sys_select(state.sock + 1, &read_fds, NULL, NULL, tp);
1057 DEBUG(11,("nothing is ready yet, continue\n"));
1062 if (ret == -1 && errno == EINTR) {
1063 /* We got a signal - continue. */
1068 if (ret == -1 && errno != EINTR) {
1069 DEBUG(0,("select error occured\n"));
1075 /* fetch a request from the main daemon */
1076 child_read_request(&state);
1078 if (state.finished) {
1079 /* we lost contact with our parent */
1083 DEBUG(4,("child daemon request %d\n", (int)state.request.cmd));
1085 ZERO_STRUCT(state.response);
1086 state.request.null_term = '\0';
1087 child_process_request(child, &state);
1089 SAFE_FREE(state.request.extra_data.data);
1091 cache_store_response(sys_getpid(), &state.response);
1093 SAFE_FREE(state.response.extra_data.data);
1095 /* We just send the result code back, the result
1096 * structure needs to be fetched via the
1097 * winbindd_cache. Hmm. That needs fixing... */
1099 if (write_data(state.sock,
1100 (const char *)&state.response.result,
1101 sizeof(state.response.result)) !=
1102 sizeof(state.response.result)) {
1103 DEBUG(0, ("Could not write result\n"));