2 Unix SMB/CIFS implementation.
4 Winbind daemon for ntdom nss module
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
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.
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.
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/>.
29 #define DBGC_CLASS DBGC_WINBIND
31 bool opt_nocache = False;
32 static bool interactive = False;
34 extern bool override_logfile;
36 struct event_context *winbind_event_context(void)
38 static struct event_context *ctx;
40 if (!ctx && !(ctx = event_context_init(NULL))) {
41 smb_panic("Could not init winbind event context");
46 struct messaging_context *winbind_messaging_context(void)
48 static struct messaging_context *ctx;
50 if (!ctx && !(ctx = messaging_init(NULL, server_id_self(),
51 winbind_event_context()))) {
52 smb_panic("Could not init winbind messaging context");
57 /* Reload configuration */
59 static bool reload_services_file(void)
64 const char *fname = lp_configfile();
66 if (file_exist(fname,NULL) && !strcsequal(fname,get_dyn_CONFIGFILE())) {
67 set_dyn_CONFIGFILE(fname);
72 ret = lp_load(get_dyn_CONFIGFILE(),False,False,True,True);
81 /**************************************************************************** **
83 **************************************************************************** */
85 static void fault_quit(void)
90 static void winbindd_status(void)
92 struct winbindd_cli_state *tmp;
94 DEBUG(0, ("winbindd status:\n"));
96 /* Print client state information */
98 DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
100 if (DEBUGLEVEL >= 2 && winbindd_num_clients()) {
101 DEBUG(2, ("\tclient list:\n"));
102 for(tmp = winbindd_client_list(); tmp; tmp = tmp->next) {
103 DEBUGADD(2, ("\t\tpid %lu, sock %d\n",
104 (unsigned long)tmp->pid, tmp->sock));
109 /* Print winbindd status to log file */
111 static void print_winbindd_status(void)
116 /* Flush client cache */
118 static void flush_caches(void)
120 /* We need to invalidate cached user list entries on a SIGHUP
121 otherwise cached access denied errors due to restrict anonymous
122 hang around until the sequence number changes. */
124 if (wcache_invalidate_cache() < 0) {
125 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
126 /* Close the cache to be able to valdite the cache */
127 close_winbindd_cache();
129 * Ensure all cache and idmap caches are consistent
130 * before we initialize the cache again.
132 if (winbindd_validate_cache() < 0) {
133 DEBUG(0, ("corrupted tdb found, trying to restore backup\n"));
136 /* Initialize cache again. */
137 if (!initialize_winbindd_cache()) {
143 /* Handle the signal by unlinking socket and exiting */
145 static void terminate(void)
149 /* Remove socket file */
150 if (asprintf(&path, "%s/%s",
151 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME) > 0) {
158 trustdom_cache_shutdown();
162 TALLOC_CTX *mem_ctx = talloc_init("end_description");
163 char *description = talloc_describe_all(mem_ctx);
165 DEBUG(3, ("tallocs left:\n%s\n", description));
166 talloc_destroy(mem_ctx);
173 static bool do_sigterm;
175 static void termination_handler(int signum)
178 sys_select_signal(signum);
181 static bool do_sigusr2;
183 static void sigusr2_handler(int signum)
186 sys_select_signal(SIGUSR2);
189 static bool do_sighup;
191 static void sighup_handler(int signum)
194 sys_select_signal(SIGHUP);
197 static bool do_sigchld;
199 static void sigchld_handler(int signum)
202 sys_select_signal(SIGCHLD);
205 /* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
206 static void msg_reload_services(struct messaging_context *msg,
209 struct server_id server_id,
212 /* Flush various caches */
214 reload_services_file();
217 /* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
218 static void msg_shutdown(struct messaging_context *msg,
221 struct server_id server_id,
228 static void winbind_msg_validate_cache(struct messaging_context *msg_ctx,
231 struct server_id server_id,
236 struct sigaction act;
237 struct sigaction oldact;
239 DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
243 * call the validation code from a child:
244 * so we don't block the main winbindd and the validation
245 * code can safely use fork/waitpid...
248 child_pid = sys_fork();
250 if (child_pid == -1) {
251 DEBUG(1, ("winbind_msg_validate_cache: Could not fork: %s\n",
256 if (child_pid != 0) {
258 DEBUG(5, ("winbind_msg_validate_cache: child created with "
259 "pid %d.\n", child_pid));
265 /* install default SIGCHLD handler: validation code uses fork/waitpid */
267 act.sa_handler = SIG_DFL;
269 /* We *want* SIGALRM to interrupt a system call. */
270 act.sa_flags = SA_RESTART;
272 sigemptyset(&act.sa_mask);
273 sigaddset(&act.sa_mask,SIGCHLD);
274 sigaction(SIGCHLD,&act,&oldact);
276 ret = (uint8)winbindd_validate_cache_nobackup();
277 DEBUG(10, ("winbindd_msg_validata_cache: got return value %d\n", ret));
278 messaging_send_buf(msg_ctx, server_id, MSG_WINBIND_VALIDATE_CACHE, &ret,
283 static struct winbindd_dispatch_table {
284 enum winbindd_cmd cmd;
285 void (*fn)(struct winbindd_cli_state *state);
286 const char *winbindd_cmd_name;
287 } dispatch_table[] = {
291 { WINBINDD_GETPWNAM, winbindd_getpwnam, "GETPWNAM" },
292 { WINBINDD_GETPWUID, winbindd_getpwuid, "GETPWUID" },
294 { WINBINDD_SETPWENT, winbindd_setpwent, "SETPWENT" },
295 { WINBINDD_ENDPWENT, winbindd_endpwent, "ENDPWENT" },
296 { WINBINDD_GETPWENT, winbindd_getpwent, "GETPWENT" },
298 { WINBINDD_GETGROUPS, winbindd_getgroups, "GETGROUPS" },
299 { WINBINDD_GETUSERSIDS, winbindd_getusersids, "GETUSERSIDS" },
300 { WINBINDD_GETUSERDOMGROUPS, winbindd_getuserdomgroups,
301 "GETUSERDOMGROUPS" },
303 /* Group functions */
305 { WINBINDD_GETGRNAM, winbindd_getgrnam, "GETGRNAM" },
306 { WINBINDD_GETGRGID, winbindd_getgrgid, "GETGRGID" },
307 { WINBINDD_SETGRENT, winbindd_setgrent, "SETGRENT" },
308 { WINBINDD_ENDGRENT, winbindd_endgrent, "ENDGRENT" },
309 { WINBINDD_GETGRENT, winbindd_getgrent, "GETGRENT" },
310 { WINBINDD_GETGRLST, winbindd_getgrent, "GETGRLST" },
312 /* PAM auth functions */
314 { WINBINDD_PAM_AUTH, winbindd_pam_auth, "PAM_AUTH" },
315 { WINBINDD_PAM_AUTH_CRAP, winbindd_pam_auth_crap, "AUTH_CRAP" },
316 { WINBINDD_PAM_CHAUTHTOK, winbindd_pam_chauthtok, "CHAUTHTOK" },
317 { WINBINDD_PAM_LOGOFF, winbindd_pam_logoff, "PAM_LOGOFF" },
318 { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, winbindd_pam_chng_pswd_auth_crap, "CHNG_PSWD_AUTH_CRAP" },
320 /* Enumeration functions */
322 { WINBINDD_LIST_USERS, winbindd_list_users, "LIST_USERS" },
323 { WINBINDD_LIST_GROUPS, winbindd_list_groups, "LIST_GROUPS" },
324 { WINBINDD_LIST_TRUSTDOM, winbindd_list_trusted_domains,
326 { WINBINDD_SHOW_SEQUENCE, winbindd_show_sequence, "SHOW_SEQUENCE" },
328 /* SID related functions */
330 { WINBINDD_LOOKUPSID, winbindd_lookupsid, "LOOKUPSID" },
331 { WINBINDD_LOOKUPNAME, winbindd_lookupname, "LOOKUPNAME" },
332 { WINBINDD_LOOKUPRIDS, winbindd_lookuprids, "LOOKUPRIDS" },
334 /* Lookup related functions */
336 { WINBINDD_SID_TO_UID, winbindd_sid_to_uid, "SID_TO_UID" },
337 { WINBINDD_SID_TO_GID, winbindd_sid_to_gid, "SID_TO_GID" },
338 { WINBINDD_UID_TO_SID, winbindd_uid_to_sid, "UID_TO_SID" },
339 { WINBINDD_GID_TO_SID, winbindd_gid_to_sid, "GID_TO_SID" },
340 #if 0 /* DISABLED until we fix the interface in Samba 3.0.26 --jerry */
341 { WINBINDD_SIDS_TO_XIDS, winbindd_sids_to_unixids, "SIDS_TO_XIDS" },
342 #endif /* end DISABLED */
343 { WINBINDD_ALLOCATE_UID, winbindd_allocate_uid, "ALLOCATE_UID" },
344 { WINBINDD_ALLOCATE_GID, winbindd_allocate_gid, "ALLOCATE_GID" },
345 { WINBINDD_SET_MAPPING, winbindd_set_mapping, "SET_MAPPING" },
346 { WINBINDD_SET_HWM, winbindd_set_hwm, "SET_HWMS" },
350 { WINBINDD_CHECK_MACHACC, winbindd_check_machine_acct, "CHECK_MACHACC" },
351 { WINBINDD_PING, winbindd_ping, "PING" },
352 { WINBINDD_INFO, winbindd_info, "INFO" },
353 { WINBINDD_INTERFACE_VERSION, winbindd_interface_version,
354 "INTERFACE_VERSION" },
355 { WINBINDD_DOMAIN_NAME, winbindd_domain_name, "DOMAIN_NAME" },
356 { WINBINDD_DOMAIN_INFO, winbindd_domain_info, "DOMAIN_INFO" },
357 { WINBINDD_NETBIOS_NAME, winbindd_netbios_name, "NETBIOS_NAME" },
358 { WINBINDD_PRIV_PIPE_DIR, winbindd_priv_pipe_dir,
359 "WINBINDD_PRIV_PIPE_DIR" },
360 { WINBINDD_GETDCNAME, winbindd_getdcname, "GETDCNAME" },
361 { WINBINDD_DSGETDCNAME, winbindd_dsgetdcname, "DSGETDCNAME" },
363 /* Credential cache access */
364 { WINBINDD_CCACHE_NTLMAUTH, winbindd_ccache_ntlm_auth, "NTLMAUTH" },
368 { WINBINDD_WINS_BYNAME, winbindd_wins_byname, "WINS_BYNAME" },
369 { WINBINDD_WINS_BYIP, winbindd_wins_byip, "WINS_BYIP" },
373 { WINBINDD_NUM_CMDS, NULL, "NONE" }
376 static void process_request(struct winbindd_cli_state *state)
378 struct winbindd_dispatch_table *table = dispatch_table;
380 /* Free response data - we may be interrupted and receive another
381 command before being able to send this data off. */
383 SAFE_FREE(state->response.extra_data.data);
385 ZERO_STRUCT(state->response);
387 state->response.result = WINBINDD_PENDING;
388 state->response.length = sizeof(struct winbindd_response);
390 state->mem_ctx = talloc_init("winbind request");
391 if (state->mem_ctx == NULL)
394 /* Remember who asked us. */
395 state->pid = state->request.pid;
397 /* Process command */
399 for (table = dispatch_table; table->fn; table++) {
400 if (state->request.cmd == table->cmd) {
401 DEBUG(10,("process_request: request fn %s\n",
402 table->winbindd_cmd_name ));
409 DEBUG(10,("process_request: unknown request fn number %d\n",
410 (int)state->request.cmd ));
411 request_error(state);
416 * A list of file descriptors being monitored by select in the main processing
417 * loop. fd_event->handler is called whenever the socket is readable/writable.
420 static struct fd_event *fd_events = NULL;
422 void add_fd_event(struct fd_event *ev)
424 struct fd_event *match;
426 /* only add unique fd_event structs */
428 for (match=fd_events; match; match=match->next ) {
430 SMB_ASSERT( match != ev );
437 DLIST_ADD(fd_events, ev);
440 void remove_fd_event(struct fd_event *ev)
442 DLIST_REMOVE(fd_events, ev);
446 * Handler for fd_events to complete a read/write request, set up by
447 * setup_async_read/setup_async_write.
450 static void rw_callback(struct fd_event *event, int flags)
455 todo = event->length - event->done;
457 if (event->flags & EVENT_FD_WRITE) {
458 SMB_ASSERT(flags == EVENT_FD_WRITE);
459 done = sys_write(event->fd,
460 &((char *)event->data)[event->done],
465 event->finished(event->private_data, False);
470 if (event->flags & EVENT_FD_READ) {
471 SMB_ASSERT(flags == EVENT_FD_READ);
472 done = sys_read(event->fd, &((char *)event->data)[event->done],
477 event->finished(event->private_data, False);
484 if (event->done == event->length) {
486 event->finished(event->private_data, True);
491 * Request an async read/write on a fd_event structure. (*finished) is called
492 * when the request is completed or an error had occurred.
495 void setup_async_read(struct fd_event *event, void *data, size_t length,
496 void (*finished)(void *private_data, bool success),
499 SMB_ASSERT(event->flags == 0);
501 event->length = length;
503 event->handler = rw_callback;
504 event->finished = finished;
505 event->private_data = private_data;
506 event->flags = EVENT_FD_READ;
509 void setup_async_write(struct fd_event *event, void *data, size_t length,
510 void (*finished)(void *private_data, bool success),
513 SMB_ASSERT(event->flags == 0);
515 event->length = length;
517 event->handler = rw_callback;
518 event->finished = finished;
519 event->private_data = private_data;
520 event->flags = EVENT_FD_WRITE;
524 * This is the main event loop of winbind requests. It goes through a
525 * state-machine of 3 read/write requests, 4 if you have extra data to send.
527 * An idle winbind client has a read request of 4 bytes outstanding,
528 * finalizing function is request_len_recv, checking the length. request_recv
529 * then processes the packet. The processing function then at some point has
530 * to call request_finished which schedules sending the response.
533 static void request_len_recv(void *private_data, bool success);
534 static void request_recv(void *private_data, bool success);
535 static void request_main_recv(void *private_data, bool success);
536 static void request_finished(struct winbindd_cli_state *state);
537 void request_finished_cont(void *private_data, bool success);
538 static void response_main_sent(void *private_data, bool success);
539 static void response_extra_sent(void *private_data, bool success);
541 static void response_extra_sent(void *private_data, bool success)
543 struct winbindd_cli_state *state =
544 talloc_get_type_abort(private_data, struct winbindd_cli_state);
546 if (state->mem_ctx != NULL) {
547 talloc_destroy(state->mem_ctx);
548 state->mem_ctx = NULL;
552 state->finished = True;
556 SAFE_FREE(state->request.extra_data.data);
557 SAFE_FREE(state->response.extra_data.data);
559 setup_async_read(&state->fd_event, &state->request, sizeof(uint32),
560 request_len_recv, state);
563 static void response_main_sent(void *private_data, bool success)
565 struct winbindd_cli_state *state =
566 talloc_get_type_abort(private_data, struct winbindd_cli_state);
569 state->finished = True;
573 if (state->response.length == sizeof(state->response)) {
574 if (state->mem_ctx != NULL) {
575 talloc_destroy(state->mem_ctx);
576 state->mem_ctx = NULL;
579 setup_async_read(&state->fd_event, &state->request,
580 sizeof(uint32), request_len_recv, state);
584 setup_async_write(&state->fd_event, state->response.extra_data.data,
585 state->response.length - sizeof(state->response),
586 response_extra_sent, state);
589 static void request_finished(struct winbindd_cli_state *state)
591 setup_async_write(&state->fd_event, &state->response,
592 sizeof(state->response), response_main_sent, state);
595 void request_error(struct winbindd_cli_state *state)
597 SMB_ASSERT(state->response.result == WINBINDD_PENDING);
598 state->response.result = WINBINDD_ERROR;
599 request_finished(state);
602 void request_ok(struct winbindd_cli_state *state)
604 SMB_ASSERT(state->response.result == WINBINDD_PENDING);
605 state->response.result = WINBINDD_OK;
606 request_finished(state);
609 void request_finished_cont(void *private_data, bool success)
611 struct winbindd_cli_state *state =
612 talloc_get_type_abort(private_data, struct winbindd_cli_state);
617 request_error(state);
620 static void request_len_recv(void *private_data, bool success)
622 struct winbindd_cli_state *state =
623 talloc_get_type_abort(private_data, struct winbindd_cli_state);
626 state->finished = True;
630 if (*(uint32 *)(&state->request) != sizeof(state->request)) {
631 DEBUG(0,("request_len_recv: Invalid request size received: %d (expected %u)\n",
632 *(uint32_t *)(&state->request), (uint32_t)sizeof(state->request)));
633 state->finished = True;
637 setup_async_read(&state->fd_event, (uint32 *)(&state->request)+1,
638 sizeof(state->request) - sizeof(uint32),
639 request_main_recv, state);
642 static void request_main_recv(void *private_data, bool success)
644 struct winbindd_cli_state *state =
645 talloc_get_type_abort(private_data, struct winbindd_cli_state);
648 state->finished = True;
652 if (state->request.extra_len == 0) {
653 state->request.extra_data.data = NULL;
654 request_recv(state, True);
658 if ((!state->privileged) &&
659 (state->request.extra_len > WINBINDD_MAX_EXTRA_DATA)) {
660 DEBUG(3, ("Got request with %d bytes extra data on "
661 "unprivileged socket\n", (int)state->request.extra_len));
662 state->request.extra_data.data = NULL;
663 state->finished = True;
667 state->request.extra_data.data =
668 SMB_MALLOC_ARRAY(char, state->request.extra_len + 1);
670 if (state->request.extra_data.data == NULL) {
671 DEBUG(0, ("malloc failed\n"));
672 state->finished = True;
676 /* Ensure null termination */
677 state->request.extra_data.data[state->request.extra_len] = '\0';
679 setup_async_read(&state->fd_event, state->request.extra_data.data,
680 state->request.extra_len, request_recv, state);
683 static void request_recv(void *private_data, bool success)
685 struct winbindd_cli_state *state =
686 talloc_get_type_abort(private_data, struct winbindd_cli_state);
689 state->finished = True;
693 process_request(state);
696 /* Process a new connection by adding it to the client connection list */
698 static void new_connection(int listen_sock, bool privileged)
700 struct sockaddr_un sunaddr;
701 struct winbindd_cli_state *state;
705 /* Accept connection */
707 len = sizeof(sunaddr);
710 sock = accept(listen_sock, (struct sockaddr *)&sunaddr, &len);
711 } while (sock == -1 && errno == EINTR);
716 DEBUG(6,("accepted socket %d\n", sock));
718 /* Create new connection structure */
720 if ((state = TALLOC_ZERO_P(NULL, struct winbindd_cli_state)) == NULL) {
727 state->last_access = time(NULL);
729 state->privileged = privileged;
731 state->fd_event.fd = state->sock;
732 state->fd_event.flags = 0;
733 add_fd_event(&state->fd_event);
735 setup_async_read(&state->fd_event, &state->request, sizeof(uint32),
736 request_len_recv, state);
738 /* Add to connection list */
740 winbindd_add_client(state);
743 /* Remove a client connection from client connection list */
745 static void remove_client(struct winbindd_cli_state *state)
747 /* It's a dead client - hold a funeral */
757 /* Free any getent state */
759 free_getent_state(state->getpwent_state);
760 free_getent_state(state->getgrent_state);
762 /* We may have some extra data that was not freed if the client was
763 killed unexpectedly */
765 SAFE_FREE(state->response.extra_data.data);
767 if (state->mem_ctx != NULL) {
768 talloc_destroy(state->mem_ctx);
769 state->mem_ctx = NULL;
772 remove_fd_event(&state->fd_event);
774 /* Remove from list and free */
776 winbindd_remove_client(state);
780 /* Shutdown client connection which has been idle for the longest time */
782 static bool remove_idle_client(void)
784 struct winbindd_cli_state *state, *remove_state = NULL;
785 time_t last_access = 0;
788 for (state = winbindd_client_list(); state; state = state->next) {
789 if (state->response.result != WINBINDD_PENDING &&
790 !state->getpwent_state && !state->getgrent_state) {
792 if (!last_access || state->last_access < last_access) {
793 last_access = state->last_access;
794 remove_state = state;
800 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
801 nidle, remove_state->sock, (unsigned int)remove_state->pid));
802 remove_client(remove_state);
809 /* Process incoming clients on listen_sock. We use a tricky non-blocking,
810 non-forking, non-threaded model which allows us to handle many
811 simultaneous connections while remaining impervious to many denial of
814 static void process_loop(void)
816 struct winbindd_cli_state *state;
819 int maxfd, listen_sock, listen_priv_sock, selret;
820 struct timeval timeout, ev_timeout;
822 /* Open Sockets here to get stuff going ASAP */
823 listen_sock = open_winbindd_socket();
824 listen_priv_sock = open_winbindd_priv_socket();
826 if (listen_sock == -1 || listen_priv_sock == -1) {
827 perror("open_winbind_socket");
831 /* We'll be doing this a lot */
833 /* Handle messages */
835 message_dispatch(winbind_messaging_context());
837 run_events(winbind_event_context(), 0, NULL, NULL);
839 /* refresh the trusted domain cache */
841 rescan_trusted_domains();
843 /* Initialise fd lists for select() */
845 maxfd = MAX(listen_sock, listen_priv_sock);
849 FD_SET(listen_sock, &r_fds);
850 FD_SET(listen_priv_sock, &r_fds);
852 timeout.tv_sec = WINBINDD_ESTABLISH_LOOP;
855 /* Check for any event timeouts. */
856 if (get_timed_events_timeout(winbind_event_context(), &ev_timeout)) {
857 timeout = timeval_min(&timeout, &ev_timeout);
860 /* Set up client readers and writers */
862 state = winbindd_client_list();
866 struct winbindd_cli_state *next = state->next;
868 /* Dispose of client connection if it is marked as
872 remove_client(state);
877 for (ev = fd_events; ev; ev = ev->next) {
878 if (ev->flags & EVENT_FD_READ) {
879 FD_SET(ev->fd, &r_fds);
880 maxfd = MAX(ev->fd, maxfd);
882 if (ev->flags & EVENT_FD_WRITE) {
883 FD_SET(ev->fd, &w_fds);
884 maxfd = MAX(ev->fd, maxfd);
890 selret = sys_select(maxfd + 1, &r_fds, &w_fds, NULL, &timeout);
897 if (errno == EINTR) {
901 /* Select error, something is badly wrong */
911 struct fd_event *next = ev->next;
913 if (FD_ISSET(ev->fd, &r_fds))
914 flags |= EVENT_FD_READ;
915 if (FD_ISSET(ev->fd, &w_fds))
916 flags |= EVENT_FD_WRITE;
918 ev->handler(ev, flags);
922 if (FD_ISSET(listen_sock, &r_fds)) {
923 while (winbindd_num_clients() >
924 WINBINDD_MAX_SIMULTANEOUS_CLIENTS - 1) {
925 DEBUG(5,("winbindd: Exceeding %d client "
926 "connections, removing idle "
928 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
929 if (!remove_idle_client()) {
930 DEBUG(0,("winbindd: Exceeding %d "
931 "client connections, no idle "
932 "connection found\n",
933 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
937 /* new, non-privileged connection */
938 new_connection(listen_sock, False);
941 if (FD_ISSET(listen_priv_sock, &r_fds)) {
942 while (winbindd_num_clients() >
943 WINBINDD_MAX_SIMULTANEOUS_CLIENTS - 1) {
944 DEBUG(5,("winbindd: Exceeding %d client "
945 "connections, removing idle "
947 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
948 if (!remove_idle_client()) {
949 DEBUG(0,("winbindd: Exceeding %d "
950 "client connections, no idle "
951 "connection found\n",
952 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
956 /* new, privileged connection */
957 new_connection(listen_priv_sock, True);
963 winbindd_check_cache_size(time(NULL));
966 /* Check signal handling things */
973 DEBUG(3, ("got SIGHUP\n"));
976 reload_services_file();
982 print_winbindd_status();
991 while ((pid = sys_waitpid(-1, NULL, WNOHANG)) > 0) {
992 winbind_child_died(pid);
999 int main(int argc, char **argv, char **envp)
1001 static bool is_daemon = False;
1002 static bool Fork = True;
1003 static bool log_stdout = False;
1004 static bool no_process_group = False;
1008 OPT_NO_PROCESS_GROUP,
1011 struct poptOption long_options[] = {
1013 { "stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1014 { "foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Daemon in foreground mode" },
1015 { "no-process-group", 0, POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1016 { "daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1017 { "interactive", 'i', POPT_ARG_NONE, NULL, 'i', "Interactive mode" },
1018 { "no-caching", 'n', POPT_ARG_NONE, NULL, 'n', "Disable caching" },
1024 TALLOC_CTX *frame = talloc_stackframe();
1026 /* glibc (?) likes to print "User defined signal 1" and exit if a
1027 SIGUSR[12] is received before a handler is installed */
1029 CatchSignal(SIGUSR1, SIG_IGN);
1030 CatchSignal(SIGUSR2, SIG_IGN);
1032 fault_setup((void (*)(void *))fault_quit );
1033 dump_core_setup("winbindd");
1037 /* Initialise for running in non-root mode */
1041 set_remote_machine_name("winbindd", False);
1043 /* Set environment variable so we don't recursively call ourselves.
1044 This may also be useful interactively. */
1046 if ( !winbind_off() ) {
1047 DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
1051 /* Initialise samba/rpc client stuff */
1053 pc = poptGetContext("winbindd", argc, (const char **)argv, long_options, 0);
1055 while ((opt = poptGetNextOpt(pc)) != -1) {
1057 /* Don't become a daemon */
1069 case OPT_NO_PROCESS_GROUP:
1070 no_process_group = true;
1072 case OPT_LOG_STDOUT:
1079 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1080 poptBadOption(pc, 0), poptStrerror(opt));
1081 poptPrintUsage(pc, stderr, 0);
1086 if (is_daemon && interactive) {
1087 d_fprintf(stderr,"\nERROR: "
1088 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
1089 poptPrintUsage(pc, stderr, 0);
1093 if (log_stdout && Fork) {
1094 d_fprintf(stderr, "\nERROR: "
1095 "Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n\n");
1096 poptPrintUsage(pc, stderr, 0);
1100 poptFreeContext(pc);
1102 if (!override_logfile) {
1103 char *logfile = NULL;
1104 if (asprintf(&logfile,"%s/log.winbindd",
1105 get_dyn_LOGFILEBASE()) > 0) {
1106 lp_set_logfile(logfile);
1110 setup_logging("winbindd", log_stdout);
1113 DEBUG(0,("winbindd version %s started.\n", SAMBA_VERSION_STRING));
1114 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1116 if (!reload_services_file()) {
1117 DEBUG(0, ("error opening config file\n"));
1121 if (!directory_exist(lp_lockdir(), NULL)) {
1122 mkdir(lp_lockdir(), 0755);
1132 if (!secrets_init()) {
1134 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1138 /* Enable netbios namecache */
1142 /* Winbind daemon initialisation */
1144 if ( ! NT_STATUS_IS_OK(idmap_init_cache()) ) {
1145 DEBUG(1, ("Could not init idmap cache!\n"));
1148 /* Unblock all signals we are interested in as they may have been
1149 blocked by the parent process. */
1151 BlockSignals(False, SIGINT);
1152 BlockSignals(False, SIGQUIT);
1153 BlockSignals(False, SIGTERM);
1154 BlockSignals(False, SIGUSR1);
1155 BlockSignals(False, SIGUSR2);
1156 BlockSignals(False, SIGHUP);
1157 BlockSignals(False, SIGCHLD);
1159 /* Setup signal handlers */
1161 CatchSignal(SIGINT, termination_handler); /* Exit on these sigs */
1162 CatchSignal(SIGQUIT, termination_handler);
1163 CatchSignal(SIGTERM, termination_handler);
1164 CatchSignal(SIGCHLD, sigchld_handler);
1166 CatchSignal(SIGPIPE, SIG_IGN); /* Ignore sigpipe */
1168 CatchSignal(SIGUSR2, sigusr2_handler); /* Debugging sigs */
1169 CatchSignal(SIGHUP, sighup_handler);
1172 become_daemon(Fork, no_process_group);
1174 pidfile_create("winbindd");
1178 * If we're interactive we want to set our own process group for
1179 * signal management.
1181 if (interactive && !no_process_group)
1182 setpgid( (pid_t)0, (pid_t)0);
1187 /* Initialise messaging system */
1189 if (winbind_messaging_context() == NULL) {
1190 DEBUG(0, ("unable to initialize messaging system\n"));
1195 * Ensure all cache and idmap caches are consistent
1196 * before we startup.
1198 if (winbindd_validate_cache() < 0) {
1199 DEBUG(0, ("corrupted tdb found, trying to restore backup\n"));
1202 /* Initialize cache (ensure version is correct). */
1203 if (!initialize_winbindd_cache()) {
1207 /* React on 'smbcontrol winbindd reload-config' in the same way
1208 as to SIGHUP signal */
1209 messaging_register(winbind_messaging_context(), NULL,
1210 MSG_SMB_CONF_UPDATED, msg_reload_services);
1211 messaging_register(winbind_messaging_context(), NULL,
1212 MSG_SHUTDOWN, msg_shutdown);
1214 /* Handle online/offline messages. */
1215 messaging_register(winbind_messaging_context(), NULL,
1216 MSG_WINBIND_OFFLINE, winbind_msg_offline);
1217 messaging_register(winbind_messaging_context(), NULL,
1218 MSG_WINBIND_ONLINE, winbind_msg_online);
1219 messaging_register(winbind_messaging_context(), NULL,
1220 MSG_WINBIND_ONLINESTATUS, winbind_msg_onlinestatus);
1222 messaging_register(winbind_messaging_context(), NULL,
1223 MSG_DUMP_EVENT_LIST, winbind_msg_dump_event_list);
1225 messaging_register(winbind_messaging_context(), NULL,
1226 MSG_WINBIND_VALIDATE_CACHE,
1227 winbind_msg_validate_cache);
1229 netsamlogon_cache_init(); /* Non-critical */
1231 /* clear the cached list of trusted domains */
1235 if (!init_domain_list()) {
1236 DEBUG(0,("unable to initalize domain list\n"));
1241 init_locator_child();
1243 smb_nscd_flush_user_cache();
1244 smb_nscd_flush_group_cache();
1246 /* Loop waiting for requests */
1250 frame = talloc_stackframe();