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/>.
27 #include "../../nsswitch/libwbclient/wbc_async.h"
30 #define DBGC_CLASS DBGC_WINBIND
32 static void remove_client(struct winbindd_cli_state *state);
34 static bool opt_nocache = False;
35 static bool interactive = False;
37 extern bool override_logfile;
39 struct event_context *winbind_event_context(void)
41 static struct event_context *ctx;
43 if (!ctx && !(ctx = event_context_init(NULL))) {
44 smb_panic("Could not init winbind event context");
49 struct messaging_context *winbind_messaging_context(void)
51 static struct messaging_context *ctx;
54 ctx = messaging_init(NULL, procid_self(),
55 winbind_event_context());
58 DEBUG(0, ("Could not init winbind messaging context.\n"));
63 /* Reload configuration */
65 static bool reload_services_file(const char *lfile)
70 const char *fname = lp_configfile();
72 if (file_exist(fname) && !strcsequal(fname,get_dyn_CONFIGFILE())) {
73 set_dyn_CONFIGFILE(fname);
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);
84 ret = lp_load(get_dyn_CONFIGFILE(),False,False,True,True);
93 /**************************************************************************** **
95 **************************************************************************** */
97 static void fault_quit(void)
102 static void winbindd_status(void)
104 struct winbindd_cli_state *tmp;
106 DEBUG(0, ("winbindd status:\n"));
108 /* Print client state information */
110 DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
112 if (DEBUGLEVEL >= 2 && winbindd_num_clients()) {
113 DEBUG(2, ("\tclient list:\n"));
114 for(tmp = winbindd_client_list(); tmp; tmp = tmp->next) {
115 DEBUGADD(2, ("\t\tpid %lu, sock %d\n",
116 (unsigned long)tmp->pid, tmp->sock));
121 /* Print winbindd status to log file */
123 static void print_winbindd_status(void)
128 /* Flush client cache */
130 static void flush_caches(void)
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. */
136 if (!wcache_invalidate_cache()) {
137 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
138 if (!winbindd_cache_validate_and_initialize()) {
144 static void flush_caches_noinit(void)
147 * We need to invalidate cached user list entries on a SIGHUP
148 * otherwise cached access denied errors due to restrict anonymous
149 * hang around until the sequence number changes.
151 * Skip uninitialized domains when flush cache.
152 * If domain is not initialized, it means it is never
153 * used or never become online. look, wcache_invalidate_cache()
154 * -> get_cache() -> init_dc_connection(). It causes a lot of traffic
155 * for unused domains and large traffic for primay domain's DC if there
159 if (!wcache_invalidate_cache_noinit()) {
160 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
161 if (!winbindd_cache_validate_and_initialize()) {
167 /* Handle the signal by unlinking socket and exiting */
169 static void terminate(bool is_parent)
172 /* When parent goes away we should
173 * remove the socket file. Not so
174 * when children terminate.
178 if (asprintf(&path, "%s/%s",
179 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME) > 0) {
187 trustdom_cache_shutdown();
189 gencache_stabilize();
193 TALLOC_CTX *mem_ctx = talloc_init("end_description");
194 char *description = talloc_describe_all(mem_ctx);
196 DEBUG(3, ("tallocs left:\n%s\n", description));
197 talloc_destroy(mem_ctx);
202 serverid_deregister_self();
209 static void winbindd_sig_term_handler(struct tevent_context *ev,
210 struct tevent_signal *se,
216 bool *is_parent = talloc_get_type_abort(private_data, bool);
218 DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
219 signum, (int)*is_parent));
220 terminate(*is_parent);
223 bool winbindd_setup_sig_term_handler(bool parent)
225 struct tevent_signal *se;
228 is_parent = talloc(winbind_event_context(), bool);
235 se = tevent_add_signal(winbind_event_context(),
238 winbindd_sig_term_handler,
241 DEBUG(0,("failed to setup SIGTERM handler"));
242 talloc_free(is_parent);
246 se = tevent_add_signal(winbind_event_context(),
249 winbindd_sig_term_handler,
252 DEBUG(0,("failed to setup SIGINT handler"));
253 talloc_free(is_parent);
257 se = tevent_add_signal(winbind_event_context(),
260 winbindd_sig_term_handler,
263 DEBUG(0,("failed to setup SIGINT handler"));
264 talloc_free(is_parent);
271 static void winbindd_sig_hup_handler(struct tevent_context *ev,
272 struct tevent_signal *se,
278 const char *file = (const char *)private_data;
280 DEBUG(1,("Reloading services after SIGHUP\n"));
281 flush_caches_noinit();
282 reload_services_file(file);
285 bool winbindd_setup_sig_hup_handler(const char *lfile)
287 struct tevent_signal *se;
291 file = talloc_strdup(winbind_event_context(),
298 se = tevent_add_signal(winbind_event_context(),
299 winbind_event_context(),
301 winbindd_sig_hup_handler,
310 static void winbindd_sig_chld_handler(struct tevent_context *ev,
311 struct tevent_signal *se,
319 while ((pid = sys_waitpid(-1, NULL, WNOHANG)) > 0) {
320 winbind_child_died(pid);
324 static bool winbindd_setup_sig_chld_handler(void)
326 struct tevent_signal *se;
328 se = tevent_add_signal(winbind_event_context(),
329 winbind_event_context(),
331 winbindd_sig_chld_handler,
340 static void winbindd_sig_usr2_handler(struct tevent_context *ev,
341 struct tevent_signal *se,
347 print_winbindd_status();
350 static bool winbindd_setup_sig_usr2_handler(void)
352 struct tevent_signal *se;
354 se = tevent_add_signal(winbind_event_context(),
355 winbind_event_context(),
357 winbindd_sig_usr2_handler,
366 /* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
367 static void msg_reload_services(struct messaging_context *msg,
370 struct server_id server_id,
373 /* Flush various caches */
375 reload_services_file((const char *) private_data);
378 /* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
379 static void msg_shutdown(struct messaging_context *msg,
382 struct server_id server_id,
385 /* only the parent waits for this message */
386 DEBUG(0,("Got shutdown message\n"));
391 static void winbind_msg_validate_cache(struct messaging_context *msg_ctx,
394 struct server_id server_id,
400 DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
404 * call the validation code from a child:
405 * so we don't block the main winbindd and the validation
406 * code can safely use fork/waitpid...
408 child_pid = sys_fork();
410 if (child_pid == -1) {
411 DEBUG(1, ("winbind_msg_validate_cache: Could not fork: %s\n",
416 if (child_pid != 0) {
418 DEBUG(5, ("winbind_msg_validate_cache: child created with "
419 "pid %d.\n", (int)child_pid));
425 if (!winbindd_reinit_after_fork(NULL)) {
429 ret = (uint8)winbindd_validate_cache_nobackup();
430 DEBUG(10, ("winbindd_msg_validata_cache: got return value %d\n", ret));
431 messaging_send_buf(msg_ctx, server_id, MSG_WINBIND_VALIDATE_CACHE, &ret,
436 static struct winbindd_dispatch_table {
437 enum winbindd_cmd cmd;
438 void (*fn)(struct winbindd_cli_state *state);
439 const char *winbindd_cmd_name;
440 } dispatch_table[] = {
442 /* PAM auth functions */
444 { WINBINDD_PAM_AUTH, winbindd_pam_auth, "PAM_AUTH" },
445 { WINBINDD_PAM_AUTH_CRAP, winbindd_pam_auth_crap, "AUTH_CRAP" },
446 { WINBINDD_PAM_CHAUTHTOK, winbindd_pam_chauthtok, "CHAUTHTOK" },
447 { WINBINDD_PAM_LOGOFF, winbindd_pam_logoff, "PAM_LOGOFF" },
448 { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, winbindd_pam_chng_pswd_auth_crap, "CHNG_PSWD_AUTH_CRAP" },
450 /* Enumeration functions */
452 { WINBINDD_LIST_TRUSTDOM, winbindd_list_trusted_domains,
457 { WINBINDD_INFO, winbindd_info, "INFO" },
458 { WINBINDD_INTERFACE_VERSION, winbindd_interface_version,
459 "INTERFACE_VERSION" },
460 { WINBINDD_DOMAIN_NAME, winbindd_domain_name, "DOMAIN_NAME" },
461 { WINBINDD_DOMAIN_INFO, winbindd_domain_info, "DOMAIN_INFO" },
462 { WINBINDD_NETBIOS_NAME, winbindd_netbios_name, "NETBIOS_NAME" },
463 { WINBINDD_PRIV_PIPE_DIR, winbindd_priv_pipe_dir,
464 "WINBINDD_PRIV_PIPE_DIR" },
466 /* Credential cache access */
467 { WINBINDD_CCACHE_NTLMAUTH, winbindd_ccache_ntlm_auth, "NTLMAUTH" },
468 { WINBINDD_CCACHE_SAVE, winbindd_ccache_save, "CCACHE_SAVE" },
472 { WINBINDD_WINS_BYNAME, winbindd_wins_byname, "WINS_BYNAME" },
473 { WINBINDD_WINS_BYIP, winbindd_wins_byip, "WINS_BYIP" },
477 { WINBINDD_NUM_CMDS, NULL, "NONE" }
480 struct winbindd_async_dispatch_table {
481 enum winbindd_cmd cmd;
482 const char *cmd_name;
483 struct tevent_req *(*send_req)(TALLOC_CTX *mem_ctx,
484 struct tevent_context *ev,
485 struct winbindd_cli_state *cli,
486 struct winbindd_request *request);
487 NTSTATUS (*recv_req)(struct tevent_req *req,
488 struct winbindd_response *presp);
491 static struct winbindd_async_dispatch_table async_nonpriv_table[] = {
492 { WINBINDD_PING, "PING",
493 wb_ping_send, wb_ping_recv },
494 { WINBINDD_LOOKUPSID, "LOOKUPSID",
495 winbindd_lookupsid_send, winbindd_lookupsid_recv },
496 { WINBINDD_LOOKUPNAME, "LOOKUPNAME",
497 winbindd_lookupname_send, winbindd_lookupname_recv },
498 { WINBINDD_SID_TO_UID, "SID_TO_UID",
499 winbindd_sid_to_uid_send, winbindd_sid_to_uid_recv },
500 { WINBINDD_SID_TO_GID, "SID_TO_GID",
501 winbindd_sid_to_gid_send, winbindd_sid_to_gid_recv },
502 { WINBINDD_UID_TO_SID, "UID_TO_SID",
503 winbindd_uid_to_sid_send, winbindd_uid_to_sid_recv },
504 { WINBINDD_GID_TO_SID, "GID_TO_SID",
505 winbindd_gid_to_sid_send, winbindd_gid_to_sid_recv },
506 { WINBINDD_GETPWSID, "GETPWSID",
507 winbindd_getpwsid_send, winbindd_getpwsid_recv },
508 { WINBINDD_GETPWNAM, "GETPWNAM",
509 winbindd_getpwnam_send, winbindd_getpwnam_recv },
510 { WINBINDD_GETPWUID, "GETPWUID",
511 winbindd_getpwuid_send, winbindd_getpwuid_recv },
512 { WINBINDD_GETSIDALIASES, "GETSIDALIASES",
513 winbindd_getsidaliases_send, winbindd_getsidaliases_recv },
514 { WINBINDD_GETUSERDOMGROUPS, "GETUSERDOMGROUPS",
515 winbindd_getuserdomgroups_send, winbindd_getuserdomgroups_recv },
516 { WINBINDD_GETGROUPS, "GETGROUPS",
517 winbindd_getgroups_send, winbindd_getgroups_recv },
518 { WINBINDD_SHOW_SEQUENCE, "SHOW_SEQUENCE",
519 winbindd_show_sequence_send, winbindd_show_sequence_recv },
520 { WINBINDD_GETGRGID, "GETGRGID",
521 winbindd_getgrgid_send, winbindd_getgrgid_recv },
522 { WINBINDD_GETGRNAM, "GETGRNAM",
523 winbindd_getgrnam_send, winbindd_getgrnam_recv },
524 { WINBINDD_GETUSERSIDS, "GETUSERSIDS",
525 winbindd_getusersids_send, winbindd_getusersids_recv },
526 { WINBINDD_LOOKUPRIDS, "LOOKUPRIDS",
527 winbindd_lookuprids_send, winbindd_lookuprids_recv },
528 { WINBINDD_SETPWENT, "SETPWENT",
529 winbindd_setpwent_send, winbindd_setpwent_recv },
530 { WINBINDD_GETPWENT, "GETPWENT",
531 winbindd_getpwent_send, winbindd_getpwent_recv },
532 { WINBINDD_ENDPWENT, "ENDPWENT",
533 winbindd_endpwent_send, winbindd_endpwent_recv },
534 { WINBINDD_DSGETDCNAME, "DSGETDCNAME",
535 winbindd_dsgetdcname_send, winbindd_dsgetdcname_recv },
536 { WINBINDD_GETDCNAME, "GETDCNAME",
537 winbindd_getdcname_send, winbindd_getdcname_recv },
538 { WINBINDD_SETGRENT, "SETGRENT",
539 winbindd_setgrent_send, winbindd_setgrent_recv },
540 { WINBINDD_GETGRENT, "GETGRENT",
541 winbindd_getgrent_send, winbindd_getgrent_recv },
542 { WINBINDD_ENDGRENT, "ENDGRENT",
543 winbindd_endgrent_send, winbindd_endgrent_recv },
544 { WINBINDD_LIST_USERS, "LIST_USERS",
545 winbindd_list_users_send, winbindd_list_users_recv },
546 { WINBINDD_LIST_GROUPS, "LIST_GROUPS",
547 winbindd_list_groups_send, winbindd_list_groups_recv },
548 { WINBINDD_CHECK_MACHACC, "CHECK_MACHACC",
549 winbindd_check_machine_acct_send, winbindd_check_machine_acct_recv },
550 { WINBINDD_PING_DC, "PING_DC",
551 winbindd_ping_dc_send, winbindd_ping_dc_recv },
553 { 0, NULL, NULL, NULL }
556 static struct winbindd_async_dispatch_table async_priv_table[] = {
557 { WINBINDD_ALLOCATE_UID, "ALLOCATE_UID",
558 winbindd_allocate_uid_send, winbindd_allocate_uid_recv },
559 { WINBINDD_ALLOCATE_GID, "ALLOCATE_GID",
560 winbindd_allocate_gid_send, winbindd_allocate_gid_recv },
561 { WINBINDD_SET_MAPPING, "SET_MAPPING",
562 winbindd_set_mapping_send, winbindd_set_mapping_recv },
563 { WINBINDD_REMOVE_MAPPING, "SET_MAPPING",
564 winbindd_remove_mapping_send, winbindd_remove_mapping_recv },
565 { WINBINDD_SET_HWM, "SET_HWM",
566 winbindd_set_hwm_send, winbindd_set_hwm_recv },
567 { WINBINDD_CHANGE_MACHACC, "CHANGE_MACHACC",
568 winbindd_change_machine_acct_send, winbindd_change_machine_acct_recv },
570 { 0, NULL, NULL, NULL }
573 static void wb_request_done(struct tevent_req *req);
575 static void process_request(struct winbindd_cli_state *state)
577 struct winbindd_dispatch_table *table = dispatch_table;
578 struct winbindd_async_dispatch_table *atable;
580 state->mem_ctx = talloc_init("winbind request");
581 if (state->mem_ctx == NULL)
584 /* Remember who asked us. */
585 state->pid = state->request->pid;
587 state->cmd_name = "unknown request";
588 state->recv_fn = NULL;
590 /* Process command */
592 for (atable = async_nonpriv_table; atable->send_req; atable += 1) {
593 if (state->request->cmd == atable->cmd) {
598 if ((atable->send_req == NULL) && state->privileged) {
599 for (atable = async_priv_table; atable->send_req;
601 if (state->request->cmd == atable->cmd) {
607 if (atable->send_req != NULL) {
608 struct tevent_req *req;
610 state->cmd_name = atable->cmd_name;
611 state->recv_fn = atable->recv_req;
613 DEBUG(10, ("process_request: Handling async request %d:%s\n",
614 (int)state->pid, state->cmd_name));
616 req = atable->send_req(state->mem_ctx, winbind_event_context(),
617 state, state->request);
619 DEBUG(0, ("process_request: atable->send failed for "
620 "%s\n", atable->cmd_name));
621 request_error(state);
624 tevent_req_set_callback(req, wb_request_done, state);
628 state->response = talloc_zero(state->mem_ctx,
629 struct winbindd_response);
630 if (state->response == NULL) {
631 DEBUG(10, ("talloc failed\n"));
632 remove_client(state);
635 state->response->result = WINBINDD_PENDING;
636 state->response->length = sizeof(struct winbindd_response);
638 for (table = dispatch_table; table->fn; table++) {
639 if (state->request->cmd == table->cmd) {
640 DEBUG(10,("process_request: request fn %s\n",
641 table->winbindd_cmd_name ));
642 state->cmd_name = table->winbindd_cmd_name;
649 DEBUG(10,("process_request: unknown request fn number %d\n",
650 (int)state->request->cmd ));
651 request_error(state);
655 static void wb_request_done(struct tevent_req *req)
657 struct winbindd_cli_state *state = tevent_req_callback_data(
658 req, struct winbindd_cli_state);
661 state->response = talloc_zero(state->mem_ctx,
662 struct winbindd_response);
663 if (state->response == NULL) {
664 DEBUG(0, ("wb_request_done[%d:%s]: talloc_zero failed - removing client\n",
665 (int)state->pid, state->cmd_name));
666 remove_client(state);
669 state->response->result = WINBINDD_PENDING;
670 state->response->length = sizeof(struct winbindd_response);
672 status = state->recv_fn(req, state->response);
675 DEBUG(10,("wb_request_done[%d:%s]: %s\n",
676 (int)state->pid, state->cmd_name, nt_errstr(status)));
678 if (!NT_STATUS_IS_OK(status)) {
679 request_error(state);
686 * This is the main event loop of winbind requests. It goes through a
687 * state-machine of 3 read/write requests, 4 if you have extra data to send.
689 * An idle winbind client has a read request of 4 bytes outstanding,
690 * finalizing function is request_len_recv, checking the length. request_recv
691 * then processes the packet. The processing function then at some point has
692 * to call request_finished which schedules sending the response.
695 static void request_finished(struct winbindd_cli_state *state);
697 static void winbind_client_request_read(struct tevent_req *req);
698 static void winbind_client_response_written(struct tevent_req *req);
700 static void request_finished(struct winbindd_cli_state *state)
702 struct tevent_req *req;
704 TALLOC_FREE(state->request);
706 req = wb_resp_write_send(state, winbind_event_context(),
707 state->out_queue, state->sock,
710 DEBUG(10,("request_finished[%d:%s]: wb_resp_write_send() failed\n",
711 (int)state->pid, state->cmd_name));
712 remove_client(state);
715 tevent_req_set_callback(req, winbind_client_response_written, state);
718 static void winbind_client_response_written(struct tevent_req *req)
720 struct winbindd_cli_state *state = tevent_req_callback_data(
721 req, struct winbindd_cli_state);
725 ret = wb_resp_write_recv(req, &err);
730 DEBUG(2, ("Could not write response[%d:%s] to client: %s\n",
731 (int)state->pid, state->cmd_name, strerror(err)));
732 remove_client(state);
736 DEBUG(10,("winbind_client_response_written[%d:%s]: delivered response "
737 "to client\n", (int)state->pid, state->cmd_name));
739 TALLOC_FREE(state->mem_ctx);
740 state->response = NULL;
741 state->cmd_name = "no request";
742 state->recv_fn = NULL;
744 req = wb_req_read_send(state, winbind_event_context(), state->sock,
745 WINBINDD_MAX_EXTRA_DATA);
747 remove_client(state);
750 tevent_req_set_callback(req, winbind_client_request_read, state);
753 void request_error(struct winbindd_cli_state *state)
755 SMB_ASSERT(state->response->result == WINBINDD_PENDING);
756 state->response->result = WINBINDD_ERROR;
757 request_finished(state);
760 void request_ok(struct winbindd_cli_state *state)
762 SMB_ASSERT(state->response->result == WINBINDD_PENDING);
763 state->response->result = WINBINDD_OK;
764 request_finished(state);
767 /* Process a new connection by adding it to the client connection list */
769 static void new_connection(int listen_sock, bool privileged)
771 struct sockaddr_un sunaddr;
772 struct winbindd_cli_state *state;
773 struct tevent_req *req;
777 /* Accept connection */
779 len = sizeof(sunaddr);
782 sock = accept(listen_sock, (struct sockaddr *)(void *)&sunaddr,
784 } while (sock == -1 && errno == EINTR);
789 DEBUG(6,("accepted socket %d\n", sock));
791 /* Create new connection structure */
793 if ((state = TALLOC_ZERO_P(NULL, struct winbindd_cli_state)) == NULL) {
800 state->out_queue = tevent_queue_create(state, "winbind client reply");
801 if (state->out_queue == NULL) {
807 state->last_access = time(NULL);
809 state->privileged = privileged;
811 req = wb_req_read_send(state, winbind_event_context(), state->sock,
812 WINBINDD_MAX_EXTRA_DATA);
818 tevent_req_set_callback(req, winbind_client_request_read, state);
820 /* Add to connection list */
822 winbindd_add_client(state);
825 static void winbind_client_request_read(struct tevent_req *req)
827 struct winbindd_cli_state *state = tevent_req_callback_data(
828 req, struct winbindd_cli_state);
832 ret = wb_req_read_recv(req, state, &state->request, &err);
836 DEBUG(6, ("closing socket %d, client exited\n",
839 DEBUG(2, ("Could not read client request from fd %d: "
840 "%s\n", state->sock, strerror(err)));
844 remove_client(state);
847 process_request(state);
850 /* Remove a client connection from client connection list */
852 static void remove_client(struct winbindd_cli_state *state)
857 /* It's a dead client - hold a funeral */
863 if (state->sock != -1) {
864 /* tell client, we are closing ... */
865 nwritten = write(state->sock, &c, sizeof(c));
866 if (nwritten == -1) {
867 DEBUG(2, ("final write to client failed: %s\n",
877 TALLOC_FREE(state->mem_ctx);
879 /* Remove from list and free */
881 winbindd_remove_client(state);
885 /* Shutdown client connection which has been idle for the longest time */
887 static bool remove_idle_client(void)
889 struct winbindd_cli_state *state, *remove_state = NULL;
890 time_t last_access = 0;
893 for (state = winbindd_client_list(); state; state = state->next) {
894 if (state->response == NULL &&
895 !state->pwent_state && !state->grent_state) {
897 if (!last_access || state->last_access < last_access) {
898 last_access = state->last_access;
899 remove_state = state;
905 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
906 nidle, remove_state->sock, (unsigned int)remove_state->pid));
907 remove_client(remove_state);
914 struct winbindd_listen_state {
919 static void winbindd_listen_fde_handler(struct tevent_context *ev,
920 struct tevent_fd *fde,
924 struct winbindd_listen_state *s = talloc_get_type_abort(private_data,
925 struct winbindd_listen_state);
927 while (winbindd_num_clients() >
928 WINBINDD_MAX_SIMULTANEOUS_CLIENTS - 1) {
929 DEBUG(5,("winbindd: Exceeding %d client "
930 "connections, removing idle "
932 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
933 if (!remove_idle_client()) {
934 DEBUG(0,("winbindd: Exceeding %d "
935 "client connections, no idle "
936 "connection found\n",
937 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
941 new_connection(s->fd, s->privileged);
944 static bool winbindd_setup_listeners(void)
946 struct winbindd_listen_state *pub_state = NULL;
947 struct winbindd_listen_state *priv_state = NULL;
948 struct tevent_fd *fde;
950 pub_state = talloc(winbind_event_context(),
951 struct winbindd_listen_state);
956 pub_state->privileged = false;
957 pub_state->fd = open_winbindd_socket();
958 if (pub_state->fd == -1) {
962 fde = tevent_add_fd(winbind_event_context(), pub_state, pub_state->fd,
963 TEVENT_FD_READ, winbindd_listen_fde_handler,
966 close(pub_state->fd);
969 tevent_fd_set_auto_close(fde);
971 priv_state = talloc(winbind_event_context(),
972 struct winbindd_listen_state);
977 priv_state->privileged = true;
978 priv_state->fd = open_winbindd_priv_socket();
979 if (priv_state->fd == -1) {
983 fde = tevent_add_fd(winbind_event_context(), priv_state,
984 priv_state->fd, TEVENT_FD_READ,
985 winbindd_listen_fde_handler, priv_state);
987 close(priv_state->fd);
990 tevent_fd_set_auto_close(fde);
994 TALLOC_FREE(pub_state);
995 TALLOC_FREE(priv_state);
999 bool winbindd_use_idmap_cache(void)
1001 return !opt_nocache;
1004 bool winbindd_use_cache(void)
1006 return !opt_nocache;
1011 int main(int argc, char **argv, char **envp)
1013 static bool is_daemon = False;
1014 static bool Fork = True;
1015 static bool log_stdout = False;
1016 static bool no_process_group = False;
1020 OPT_NO_PROCESS_GROUP,
1023 struct poptOption long_options[] = {
1025 { "stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1026 { "foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Daemon in foreground mode" },
1027 { "no-process-group", 0, POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1028 { "daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1029 { "interactive", 'i', POPT_ARG_NONE, NULL, 'i', "Interactive mode" },
1030 { "no-caching", 'n', POPT_ARG_NONE, NULL, 'n', "Disable caching" },
1036 TALLOC_CTX *frame = talloc_stackframe();
1037 struct tevent_timer *te;
1039 /* glibc (?) likes to print "User defined signal 1" and exit if a
1040 SIGUSR[12] is received before a handler is installed */
1042 CatchSignal(SIGUSR1, SIG_IGN);
1043 CatchSignal(SIGUSR2, SIG_IGN);
1045 fault_setup((void (*)(void *))fault_quit );
1046 dump_core_setup("winbindd");
1050 /* Initialise for running in non-root mode */
1054 set_remote_machine_name("winbindd", False);
1056 /* Set environment variable so we don't recursively call ourselves.
1057 This may also be useful interactively. */
1059 if ( !winbind_off() ) {
1060 DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
1064 /* Initialise samba/rpc client stuff */
1066 pc = poptGetContext("winbindd", argc, (const char **)argv, long_options, 0);
1068 while ((opt = poptGetNextOpt(pc)) != -1) {
1070 /* Don't become a daemon */
1082 case OPT_NO_PROCESS_GROUP:
1083 no_process_group = true;
1085 case OPT_LOG_STDOUT:
1092 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1093 poptBadOption(pc, 0), poptStrerror(opt));
1094 poptPrintUsage(pc, stderr, 0);
1099 if (is_daemon && interactive) {
1100 d_fprintf(stderr,"\nERROR: "
1101 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
1102 poptPrintUsage(pc, stderr, 0);
1106 if (log_stdout && Fork) {
1107 d_fprintf(stderr, "\nERROR: "
1108 "Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n\n");
1109 poptPrintUsage(pc, stderr, 0);
1113 poptFreeContext(pc);
1115 if (!override_logfile) {
1117 if (asprintf(&lfile,"%s/log.winbindd",
1118 get_dyn_LOGFILEBASE()) > 0) {
1119 lp_set_logfile(lfile);
1123 setup_logging("winbindd", log_stdout);
1126 DEBUG(0,("winbindd version %s started.\n", samba_version_string()));
1127 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1129 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1130 DEBUG(0, ("error opening config file\n"));
1134 /* Initialise messaging system */
1136 if (winbind_messaging_context() == NULL) {
1140 if (!reload_services_file(NULL)) {
1141 DEBUG(0, ("error opening config file\n"));
1145 if (!directory_exist(lp_lockdir())) {
1146 mkdir(lp_lockdir(), 0755);
1156 if (!secrets_init()) {
1158 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1162 /* Enable netbios namecache */
1166 /* Unblock all signals we are interested in as they may have been
1167 blocked by the parent process. */
1169 BlockSignals(False, SIGINT);
1170 BlockSignals(False, SIGQUIT);
1171 BlockSignals(False, SIGTERM);
1172 BlockSignals(False, SIGUSR1);
1173 BlockSignals(False, SIGUSR2);
1174 BlockSignals(False, SIGHUP);
1175 BlockSignals(False, SIGCHLD);
1178 become_daemon(Fork, no_process_group, log_stdout);
1180 pidfile_create("winbindd");
1184 * If we're interactive we want to set our own process group for
1185 * signal management.
1187 if (interactive && !no_process_group)
1188 setpgid( (pid_t)0, (pid_t)0);
1193 /* Don't use winbindd_reinit_after_fork here as
1194 * we're just starting up and haven't created any
1195 * winbindd-specific resources we must free yet. JRA.
1198 if (!NT_STATUS_IS_OK(reinit_after_fork(winbind_messaging_context(),
1199 winbind_event_context(),
1201 DEBUG(0,("reinit_after_fork() failed\n"));
1205 /* Setup signal handlers */
1207 if (!winbindd_setup_sig_term_handler(true))
1209 if (!winbindd_setup_sig_hup_handler(NULL))
1211 if (!winbindd_setup_sig_chld_handler())
1213 if (!winbindd_setup_sig_usr2_handler())
1216 CatchSignal(SIGPIPE, SIG_IGN); /* Ignore sigpipe */
1219 * Ensure all cache and idmap caches are consistent
1220 * and initialized before we startup.
1222 if (!winbindd_cache_validate_and_initialize()) {
1226 /* get broadcast messages */
1228 if (!serverid_register_self(FLAG_MSG_GENERAL|FLAG_MSG_DBWRAP)) {
1229 DEBUG(1, ("Could not register myself in serverid.tdb\n"));
1233 /* React on 'smbcontrol winbindd reload-config' in the same way
1234 as to SIGHUP signal */
1235 messaging_register(winbind_messaging_context(), NULL,
1236 MSG_SMB_CONF_UPDATED, msg_reload_services);
1237 messaging_register(winbind_messaging_context(), NULL,
1238 MSG_SHUTDOWN, msg_shutdown);
1240 /* Handle online/offline messages. */
1241 messaging_register(winbind_messaging_context(), NULL,
1242 MSG_WINBIND_OFFLINE, winbind_msg_offline);
1243 messaging_register(winbind_messaging_context(), NULL,
1244 MSG_WINBIND_ONLINE, winbind_msg_online);
1245 messaging_register(winbind_messaging_context(), NULL,
1246 MSG_WINBIND_ONLINESTATUS, winbind_msg_onlinestatus);
1248 messaging_register(winbind_messaging_context(), NULL,
1249 MSG_DUMP_EVENT_LIST, winbind_msg_dump_event_list);
1251 messaging_register(winbind_messaging_context(), NULL,
1252 MSG_WINBIND_VALIDATE_CACHE,
1253 winbind_msg_validate_cache);
1255 messaging_register(winbind_messaging_context(), NULL,
1256 MSG_WINBIND_DUMP_DOMAIN_LIST,
1257 winbind_msg_dump_domain_list);
1259 /* Register handler for MSG_DEBUG. */
1260 messaging_register(winbind_messaging_context(), NULL,
1264 netsamlogon_cache_init(); /* Non-critical */
1266 /* clear the cached list of trusted domains */
1270 if (!init_domain_list()) {
1271 DEBUG(0,("unable to initialize domain list\n"));
1276 init_locator_child();
1278 smb_nscd_flush_user_cache();
1279 smb_nscd_flush_group_cache();
1281 /* setup listen sockets */
1283 if (!winbindd_setup_listeners()) {
1284 DEBUG(0,("winbindd_setup_listeners() failed\n"));
1288 te = tevent_add_timer(winbind_event_context(), NULL, timeval_zero(),
1289 rescan_trusted_domains, NULL);
1291 DEBUG(0, ("Could not trigger rescan_trusted_domains()\n"));
1296 /* Loop waiting for requests */
1298 frame = talloc_stackframe();
1300 if (tevent_loop_once(winbind_event_context()) == -1) {
1301 DEBUG(1, ("tevent_loop_once() failed: %s\n",