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/>.
26 #include "popt_common.h"
28 #include "nsswitch/winbind_client.h"
29 #include "../../nsswitch/libwbclient/wbc_async.h"
30 #include "librpc/gen_ndr/messaging.h"
31 #include "../librpc/gen_ndr/srv_lsa.h"
32 #include "../librpc/gen_ndr/srv_samr.h"
36 #define DBGC_CLASS DBGC_WINBIND
38 static void remove_client(struct winbindd_cli_state *state);
40 static bool opt_nocache = False;
41 static bool interactive = False;
43 extern bool override_logfile;
45 /* Reload configuration */
47 static bool reload_services_file(const char *lfile)
52 const char *fname = lp_configfile();
54 if (file_exist(fname) && !strcsequal(fname,get_dyn_CONFIGFILE())) {
55 set_dyn_CONFIGFILE(fname);
59 /* if this is a child, restore the logfile to the special
60 name - <domain>, idmap, etc. */
61 if (lfile && *lfile) {
62 lp_set_logfile(lfile);
66 ret = lp_load(get_dyn_CONFIGFILE(),False,False,True,True);
75 /**************************************************************************** **
77 **************************************************************************** */
79 static void fault_quit(void)
84 static void winbindd_status(void)
86 struct winbindd_cli_state *tmp;
88 DEBUG(0, ("winbindd status:\n"));
90 /* Print client state information */
92 DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
94 if (DEBUGLEVEL >= 2 && winbindd_num_clients()) {
95 DEBUG(2, ("\tclient list:\n"));
96 for(tmp = winbindd_client_list(); tmp; tmp = tmp->next) {
97 DEBUGADD(2, ("\t\tpid %lu, sock %d\n",
98 (unsigned long)tmp->pid, tmp->sock));
103 /* Print winbindd status to log file */
105 static void print_winbindd_status(void)
110 /* Flush client cache */
112 static void flush_caches(void)
114 /* We need to invalidate cached user list entries on a SIGHUP
115 otherwise cached access denied errors due to restrict anonymous
116 hang around until the sequence number changes. */
118 if (!wcache_invalidate_cache()) {
119 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
120 if (!winbindd_cache_validate_and_initialize()) {
126 static void flush_caches_noinit(void)
129 * We need to invalidate cached user list entries on a SIGHUP
130 * otherwise cached access denied errors due to restrict anonymous
131 * hang around until the sequence number changes.
133 * Skip uninitialized domains when flush cache.
134 * If domain is not initialized, it means it is never
135 * used or never become online. look, wcache_invalidate_cache()
136 * -> get_cache() -> init_dc_connection(). It causes a lot of traffic
137 * for unused domains and large traffic for primay domain's DC if there
141 if (!wcache_invalidate_cache_noinit()) {
142 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
143 if (!winbindd_cache_validate_and_initialize()) {
149 /* Handle the signal by unlinking socket and exiting */
151 static void terminate(bool is_parent)
154 /* When parent goes away we should
155 * remove the socket file. Not so
156 * when children terminate.
160 if (asprintf(&path, "%s/%s",
161 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME) > 0) {
169 trustdom_cache_shutdown();
171 gencache_stabilize();
175 TALLOC_CTX *mem_ctx = talloc_init("end_description");
176 char *description = talloc_describe_all(mem_ctx);
178 DEBUG(3, ("tallocs left:\n%s\n", description));
179 talloc_destroy(mem_ctx);
184 serverid_deregister(procid_self());
191 static void winbindd_sig_term_handler(struct tevent_context *ev,
192 struct tevent_signal *se,
198 bool *is_parent = talloc_get_type_abort(private_data, bool);
200 DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
201 signum, (int)*is_parent));
202 terminate(*is_parent);
205 bool winbindd_setup_sig_term_handler(bool parent)
207 struct tevent_signal *se;
210 is_parent = talloc(winbind_event_context(), bool);
217 se = tevent_add_signal(winbind_event_context(),
220 winbindd_sig_term_handler,
223 DEBUG(0,("failed to setup SIGTERM handler"));
224 talloc_free(is_parent);
228 se = tevent_add_signal(winbind_event_context(),
231 winbindd_sig_term_handler,
234 DEBUG(0,("failed to setup SIGINT handler"));
235 talloc_free(is_parent);
239 se = tevent_add_signal(winbind_event_context(),
242 winbindd_sig_term_handler,
245 DEBUG(0,("failed to setup SIGINT handler"));
246 talloc_free(is_parent);
253 static void winbindd_sig_hup_handler(struct tevent_context *ev,
254 struct tevent_signal *se,
260 const char *file = (const char *)private_data;
262 DEBUG(1,("Reloading services after SIGHUP\n"));
263 flush_caches_noinit();
264 reload_services_file(file);
267 bool winbindd_setup_sig_hup_handler(const char *lfile)
269 struct tevent_signal *se;
273 file = talloc_strdup(winbind_event_context(),
280 se = tevent_add_signal(winbind_event_context(),
281 winbind_event_context(),
283 winbindd_sig_hup_handler,
292 static void winbindd_sig_chld_handler(struct tevent_context *ev,
293 struct tevent_signal *se,
301 while ((pid = sys_waitpid(-1, NULL, WNOHANG)) > 0) {
302 winbind_child_died(pid);
306 static bool winbindd_setup_sig_chld_handler(void)
308 struct tevent_signal *se;
310 se = tevent_add_signal(winbind_event_context(),
311 winbind_event_context(),
313 winbindd_sig_chld_handler,
322 static void winbindd_sig_usr2_handler(struct tevent_context *ev,
323 struct tevent_signal *se,
329 print_winbindd_status();
332 static bool winbindd_setup_sig_usr2_handler(void)
334 struct tevent_signal *se;
336 se = tevent_add_signal(winbind_event_context(),
337 winbind_event_context(),
339 winbindd_sig_usr2_handler,
348 /* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
349 static void msg_reload_services(struct messaging_context *msg,
352 struct server_id server_id,
355 /* Flush various caches */
357 reload_services_file((const char *) private_data);
360 /* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
361 static void msg_shutdown(struct messaging_context *msg,
364 struct server_id server_id,
367 /* only the parent waits for this message */
368 DEBUG(0,("Got shutdown message\n"));
373 static void winbind_msg_validate_cache(struct messaging_context *msg_ctx,
376 struct server_id server_id,
382 DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
386 * call the validation code from a child:
387 * so we don't block the main winbindd and the validation
388 * code can safely use fork/waitpid...
390 child_pid = sys_fork();
392 if (child_pid == -1) {
393 DEBUG(1, ("winbind_msg_validate_cache: Could not fork: %s\n",
398 if (child_pid != 0) {
400 DEBUG(5, ("winbind_msg_validate_cache: child created with "
401 "pid %d.\n", (int)child_pid));
407 if (!winbindd_reinit_after_fork(NULL)) {
411 /* install default SIGCHLD handler: validation code uses fork/waitpid */
412 CatchSignal(SIGCHLD, SIG_DFL);
414 ret = (uint8)winbindd_validate_cache_nobackup();
415 DEBUG(10, ("winbindd_msg_validata_cache: got return value %d\n", ret));
416 messaging_send_buf(msg_ctx, server_id, MSG_WINBIND_VALIDATE_CACHE, &ret,
421 static struct winbindd_dispatch_table {
422 enum winbindd_cmd cmd;
423 void (*fn)(struct winbindd_cli_state *state);
424 const char *winbindd_cmd_name;
425 } dispatch_table[] = {
427 /* Enumeration functions */
429 { WINBINDD_LIST_TRUSTDOM, winbindd_list_trusted_domains,
434 { WINBINDD_INFO, winbindd_info, "INFO" },
435 { WINBINDD_INTERFACE_VERSION, winbindd_interface_version,
436 "INTERFACE_VERSION" },
437 { WINBINDD_DOMAIN_NAME, winbindd_domain_name, "DOMAIN_NAME" },
438 { WINBINDD_DOMAIN_INFO, winbindd_domain_info, "DOMAIN_INFO" },
439 { WINBINDD_NETBIOS_NAME, winbindd_netbios_name, "NETBIOS_NAME" },
440 { WINBINDD_PRIV_PIPE_DIR, winbindd_priv_pipe_dir,
441 "WINBINDD_PRIV_PIPE_DIR" },
443 /* Credential cache access */
444 { WINBINDD_CCACHE_NTLMAUTH, winbindd_ccache_ntlm_auth, "NTLMAUTH" },
445 { WINBINDD_CCACHE_SAVE, winbindd_ccache_save, "CCACHE_SAVE" },
449 { WINBINDD_WINS_BYNAME, winbindd_wins_byname, "WINS_BYNAME" },
450 { WINBINDD_WINS_BYIP, winbindd_wins_byip, "WINS_BYIP" },
454 { WINBINDD_NUM_CMDS, NULL, "NONE" }
457 struct winbindd_async_dispatch_table {
458 enum winbindd_cmd cmd;
459 const char *cmd_name;
460 struct tevent_req *(*send_req)(TALLOC_CTX *mem_ctx,
461 struct tevent_context *ev,
462 struct winbindd_cli_state *cli,
463 struct winbindd_request *request);
464 NTSTATUS (*recv_req)(struct tevent_req *req,
465 struct winbindd_response *presp);
468 static struct winbindd_async_dispatch_table async_nonpriv_table[] = {
469 { WINBINDD_PING, "PING",
470 wb_ping_send, wb_ping_recv },
471 { WINBINDD_LOOKUPSID, "LOOKUPSID",
472 winbindd_lookupsid_send, winbindd_lookupsid_recv },
473 { WINBINDD_LOOKUPNAME, "LOOKUPNAME",
474 winbindd_lookupname_send, winbindd_lookupname_recv },
475 { WINBINDD_SID_TO_UID, "SID_TO_UID",
476 winbindd_sid_to_uid_send, winbindd_sid_to_uid_recv },
477 { WINBINDD_SID_TO_GID, "SID_TO_GID",
478 winbindd_sid_to_gid_send, winbindd_sid_to_gid_recv },
479 { WINBINDD_UID_TO_SID, "UID_TO_SID",
480 winbindd_uid_to_sid_send, winbindd_uid_to_sid_recv },
481 { WINBINDD_GID_TO_SID, "GID_TO_SID",
482 winbindd_gid_to_sid_send, winbindd_gid_to_sid_recv },
483 { WINBINDD_GETPWSID, "GETPWSID",
484 winbindd_getpwsid_send, winbindd_getpwsid_recv },
485 { WINBINDD_GETPWNAM, "GETPWNAM",
486 winbindd_getpwnam_send, winbindd_getpwnam_recv },
487 { WINBINDD_GETPWUID, "GETPWUID",
488 winbindd_getpwuid_send, winbindd_getpwuid_recv },
489 { WINBINDD_GETSIDALIASES, "GETSIDALIASES",
490 winbindd_getsidaliases_send, winbindd_getsidaliases_recv },
491 { WINBINDD_GETUSERDOMGROUPS, "GETUSERDOMGROUPS",
492 winbindd_getuserdomgroups_send, winbindd_getuserdomgroups_recv },
493 { WINBINDD_GETGROUPS, "GETGROUPS",
494 winbindd_getgroups_send, winbindd_getgroups_recv },
495 { WINBINDD_SHOW_SEQUENCE, "SHOW_SEQUENCE",
496 winbindd_show_sequence_send, winbindd_show_sequence_recv },
497 { WINBINDD_GETGRGID, "GETGRGID",
498 winbindd_getgrgid_send, winbindd_getgrgid_recv },
499 { WINBINDD_GETGRNAM, "GETGRNAM",
500 winbindd_getgrnam_send, winbindd_getgrnam_recv },
501 { WINBINDD_GETUSERSIDS, "GETUSERSIDS",
502 winbindd_getusersids_send, winbindd_getusersids_recv },
503 { WINBINDD_LOOKUPRIDS, "LOOKUPRIDS",
504 winbindd_lookuprids_send, winbindd_lookuprids_recv },
505 { WINBINDD_SETPWENT, "SETPWENT",
506 winbindd_setpwent_send, winbindd_setpwent_recv },
507 { WINBINDD_GETPWENT, "GETPWENT",
508 winbindd_getpwent_send, winbindd_getpwent_recv },
509 { WINBINDD_ENDPWENT, "ENDPWENT",
510 winbindd_endpwent_send, winbindd_endpwent_recv },
511 { WINBINDD_DSGETDCNAME, "DSGETDCNAME",
512 winbindd_dsgetdcname_send, winbindd_dsgetdcname_recv },
513 { WINBINDD_GETDCNAME, "GETDCNAME",
514 winbindd_getdcname_send, winbindd_getdcname_recv },
515 { WINBINDD_SETGRENT, "SETGRENT",
516 winbindd_setgrent_send, winbindd_setgrent_recv },
517 { WINBINDD_GETGRENT, "GETGRENT",
518 winbindd_getgrent_send, winbindd_getgrent_recv },
519 { WINBINDD_ENDGRENT, "ENDGRENT",
520 winbindd_endgrent_send, winbindd_endgrent_recv },
521 { WINBINDD_LIST_USERS, "LIST_USERS",
522 winbindd_list_users_send, winbindd_list_users_recv },
523 { WINBINDD_LIST_GROUPS, "LIST_GROUPS",
524 winbindd_list_groups_send, winbindd_list_groups_recv },
525 { WINBINDD_CHECK_MACHACC, "CHECK_MACHACC",
526 winbindd_check_machine_acct_send, winbindd_check_machine_acct_recv },
527 { WINBINDD_PING_DC, "PING_DC",
528 winbindd_ping_dc_send, winbindd_ping_dc_recv },
529 { WINBINDD_PAM_AUTH, "PAM_AUTH",
530 winbindd_pam_auth_send, winbindd_pam_auth_recv },
531 { WINBINDD_PAM_LOGOFF, "PAM_LOGOFF",
532 winbindd_pam_logoff_send, winbindd_pam_logoff_recv },
533 { WINBINDD_PAM_CHAUTHTOK, "PAM_CHAUTHTOK",
534 winbindd_pam_chauthtok_send, winbindd_pam_chauthtok_recv },
535 { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, "PAM_CHNG_PSWD_AUTH_CRAP",
536 winbindd_pam_chng_pswd_auth_crap_send,
537 winbindd_pam_chng_pswd_auth_crap_recv },
539 { 0, NULL, NULL, NULL }
542 static struct winbindd_async_dispatch_table async_priv_table[] = {
543 { WINBINDD_ALLOCATE_UID, "ALLOCATE_UID",
544 winbindd_allocate_uid_send, winbindd_allocate_uid_recv },
545 { WINBINDD_ALLOCATE_GID, "ALLOCATE_GID",
546 winbindd_allocate_gid_send, winbindd_allocate_gid_recv },
547 { WINBINDD_CHANGE_MACHACC, "CHANGE_MACHACC",
548 winbindd_change_machine_acct_send, winbindd_change_machine_acct_recv },
549 { WINBINDD_PAM_AUTH_CRAP, "PAM_AUTH_CRAP",
550 winbindd_pam_auth_crap_send, winbindd_pam_auth_crap_recv },
552 { 0, NULL, NULL, NULL }
555 static void wb_request_done(struct tevent_req *req);
557 static void process_request(struct winbindd_cli_state *state)
559 struct winbindd_dispatch_table *table = dispatch_table;
560 struct winbindd_async_dispatch_table *atable;
562 state->mem_ctx = talloc_named(state, 0, "winbind request");
563 if (state->mem_ctx == NULL)
566 /* Remember who asked us. */
567 state->pid = state->request->pid;
569 state->cmd_name = "unknown request";
570 state->recv_fn = NULL;
572 /* Process command */
574 for (atable = async_nonpriv_table; atable->send_req; atable += 1) {
575 if (state->request->cmd == atable->cmd) {
580 if ((atable->send_req == NULL) && state->privileged) {
581 for (atable = async_priv_table; atable->send_req;
583 if (state->request->cmd == atable->cmd) {
589 if (atable->send_req != NULL) {
590 struct tevent_req *req;
592 state->cmd_name = atable->cmd_name;
593 state->recv_fn = atable->recv_req;
595 DEBUG(10, ("process_request: Handling async request %d:%s\n",
596 (int)state->pid, state->cmd_name));
598 req = atable->send_req(state->mem_ctx, winbind_event_context(),
599 state, state->request);
601 DEBUG(0, ("process_request: atable->send failed for "
602 "%s\n", atable->cmd_name));
603 request_error(state);
606 tevent_req_set_callback(req, wb_request_done, state);
610 state->response = talloc_zero(state->mem_ctx,
611 struct winbindd_response);
612 if (state->response == NULL) {
613 DEBUG(10, ("talloc failed\n"));
614 remove_client(state);
617 state->response->result = WINBINDD_PENDING;
618 state->response->length = sizeof(struct winbindd_response);
620 for (table = dispatch_table; table->fn; table++) {
621 if (state->request->cmd == table->cmd) {
622 DEBUG(10,("process_request: request fn %s\n",
623 table->winbindd_cmd_name ));
624 state->cmd_name = table->winbindd_cmd_name;
631 DEBUG(10,("process_request: unknown request fn number %d\n",
632 (int)state->request->cmd ));
633 request_error(state);
637 static void wb_request_done(struct tevent_req *req)
639 struct winbindd_cli_state *state = tevent_req_callback_data(
640 req, struct winbindd_cli_state);
643 state->response = talloc_zero(state->mem_ctx,
644 struct winbindd_response);
645 if (state->response == NULL) {
646 DEBUG(0, ("wb_request_done[%d:%s]: talloc_zero failed - removing client\n",
647 (int)state->pid, state->cmd_name));
648 remove_client(state);
651 state->response->result = WINBINDD_PENDING;
652 state->response->length = sizeof(struct winbindd_response);
654 status = state->recv_fn(req, state->response);
657 DEBUG(10,("wb_request_done[%d:%s]: %s\n",
658 (int)state->pid, state->cmd_name, nt_errstr(status)));
660 if (!NT_STATUS_IS_OK(status)) {
661 request_error(state);
668 * This is the main event loop of winbind requests. It goes through a
669 * state-machine of 3 read/write requests, 4 if you have extra data to send.
671 * An idle winbind client has a read request of 4 bytes outstanding,
672 * finalizing function is request_len_recv, checking the length. request_recv
673 * then processes the packet. The processing function then at some point has
674 * to call request_finished which schedules sending the response.
677 static void request_finished(struct winbindd_cli_state *state);
679 static void winbind_client_request_read(struct tevent_req *req);
680 static void winbind_client_response_written(struct tevent_req *req);
682 static void request_finished(struct winbindd_cli_state *state)
684 struct tevent_req *req;
686 TALLOC_FREE(state->request);
688 req = wb_resp_write_send(state, winbind_event_context(),
689 state->out_queue, state->sock,
692 DEBUG(10,("request_finished[%d:%s]: wb_resp_write_send() failed\n",
693 (int)state->pid, state->cmd_name));
694 remove_client(state);
697 tevent_req_set_callback(req, winbind_client_response_written, state);
700 static void winbind_client_response_written(struct tevent_req *req)
702 struct winbindd_cli_state *state = tevent_req_callback_data(
703 req, struct winbindd_cli_state);
707 ret = wb_resp_write_recv(req, &err);
712 DEBUG(2, ("Could not write response[%d:%s] to client: %s\n",
713 (int)state->pid, state->cmd_name, strerror(err)));
714 remove_client(state);
718 DEBUG(10,("winbind_client_response_written[%d:%s]: delivered response "
719 "to client\n", (int)state->pid, state->cmd_name));
721 TALLOC_FREE(state->mem_ctx);
722 state->response = NULL;
723 state->cmd_name = "no request";
724 state->recv_fn = NULL;
726 req = wb_req_read_send(state, winbind_event_context(), state->sock,
727 WINBINDD_MAX_EXTRA_DATA);
729 remove_client(state);
732 tevent_req_set_callback(req, winbind_client_request_read, state);
735 void request_error(struct winbindd_cli_state *state)
737 SMB_ASSERT(state->response->result == WINBINDD_PENDING);
738 state->response->result = WINBINDD_ERROR;
739 request_finished(state);
742 void request_ok(struct winbindd_cli_state *state)
744 SMB_ASSERT(state->response->result == WINBINDD_PENDING);
745 state->response->result = WINBINDD_OK;
746 request_finished(state);
749 /* Process a new connection by adding it to the client connection list */
751 static void new_connection(int listen_sock, bool privileged)
753 struct sockaddr_un sunaddr;
754 struct winbindd_cli_state *state;
755 struct tevent_req *req;
759 /* Accept connection */
761 len = sizeof(sunaddr);
764 sock = accept(listen_sock, (struct sockaddr *)(void *)&sunaddr,
766 } while (sock == -1 && errno == EINTR);
771 DEBUG(6,("accepted socket %d\n", sock));
773 /* Create new connection structure */
775 if ((state = TALLOC_ZERO_P(NULL, struct winbindd_cli_state)) == NULL) {
782 state->out_queue = tevent_queue_create(state, "winbind client reply");
783 if (state->out_queue == NULL) {
789 state->last_access = time(NULL);
791 state->privileged = privileged;
793 req = wb_req_read_send(state, winbind_event_context(), state->sock,
794 WINBINDD_MAX_EXTRA_DATA);
800 tevent_req_set_callback(req, winbind_client_request_read, state);
802 /* Add to connection list */
804 winbindd_add_client(state);
807 static void winbind_client_request_read(struct tevent_req *req)
809 struct winbindd_cli_state *state = tevent_req_callback_data(
810 req, struct winbindd_cli_state);
814 ret = wb_req_read_recv(req, state, &state->request, &err);
818 DEBUG(6, ("closing socket %d, client exited\n",
821 DEBUG(2, ("Could not read client request from fd %d: "
822 "%s\n", state->sock, strerror(err)));
826 remove_client(state);
829 process_request(state);
832 /* Remove a client connection from client connection list */
834 static void remove_client(struct winbindd_cli_state *state)
839 /* It's a dead client - hold a funeral */
845 if (state->sock != -1) {
846 /* tell client, we are closing ... */
847 nwritten = write(state->sock, &c, sizeof(c));
848 if (nwritten == -1) {
849 DEBUG(2, ("final write to client failed: %s\n",
859 TALLOC_FREE(state->mem_ctx);
861 /* Remove from list and free */
863 winbindd_remove_client(state);
867 /* Shutdown client connection which has been idle for the longest time */
869 static bool remove_idle_client(void)
871 struct winbindd_cli_state *state, *remove_state = NULL;
872 time_t last_access = 0;
875 for (state = winbindd_client_list(); state; state = state->next) {
876 if (state->response == NULL &&
877 !state->pwent_state && !state->grent_state) {
879 if (!last_access || state->last_access < last_access) {
880 last_access = state->last_access;
881 remove_state = state;
887 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
888 nidle, remove_state->sock, (unsigned int)remove_state->pid));
889 remove_client(remove_state);
896 struct winbindd_listen_state {
901 static void winbindd_listen_fde_handler(struct tevent_context *ev,
902 struct tevent_fd *fde,
906 struct winbindd_listen_state *s = talloc_get_type_abort(private_data,
907 struct winbindd_listen_state);
909 while (winbindd_num_clients() >
910 WINBINDD_MAX_SIMULTANEOUS_CLIENTS - 1) {
911 DEBUG(5,("winbindd: Exceeding %d client "
912 "connections, removing idle "
914 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
915 if (!remove_idle_client()) {
916 DEBUG(0,("winbindd: Exceeding %d "
917 "client connections, no idle "
918 "connection found\n",
919 WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
923 new_connection(s->fd, s->privileged);
927 * Winbindd socket accessor functions
930 const char *get_winbind_pipe_dir(void)
932 return lp_parm_const_string(-1, "winbindd", "socket dir", WINBINDD_SOCKET_DIR);
935 char *get_winbind_priv_pipe_dir(void)
937 return lock_path(WINBINDD_PRIV_SOCKET_SUBDIR);
940 static bool winbindd_setup_listeners(void)
942 struct winbindd_listen_state *pub_state = NULL;
943 struct winbindd_listen_state *priv_state = NULL;
944 struct tevent_fd *fde;
946 pub_state = talloc(winbind_event_context(),
947 struct winbindd_listen_state);
952 pub_state->privileged = false;
953 pub_state->fd = create_pipe_sock(
954 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME, 0755);
955 if (pub_state->fd == -1) {
959 fde = tevent_add_fd(winbind_event_context(), pub_state, pub_state->fd,
960 TEVENT_FD_READ, winbindd_listen_fde_handler,
963 close(pub_state->fd);
966 tevent_fd_set_auto_close(fde);
968 priv_state = talloc(winbind_event_context(),
969 struct winbindd_listen_state);
974 priv_state->privileged = true;
975 priv_state->fd = create_pipe_sock(
976 get_winbind_priv_pipe_dir(), WINBINDD_SOCKET_NAME, 0750);
977 if (priv_state->fd == -1) {
981 fde = tevent_add_fd(winbind_event_context(), priv_state,
982 priv_state->fd, TEVENT_FD_READ,
983 winbindd_listen_fde_handler, priv_state);
985 close(priv_state->fd);
988 tevent_fd_set_auto_close(fde);
992 TALLOC_FREE(pub_state);
993 TALLOC_FREE(priv_state);
997 bool winbindd_use_idmap_cache(void)
1002 bool winbindd_use_cache(void)
1004 return !opt_nocache;
1007 void winbindd_register_handlers(void)
1009 struct tevent_timer *te;
1010 /* Setup signal handlers */
1012 if (!winbindd_setup_sig_term_handler(true))
1014 if (!winbindd_setup_sig_hup_handler(NULL))
1016 if (!winbindd_setup_sig_chld_handler())
1018 if (!winbindd_setup_sig_usr2_handler())
1021 CatchSignal(SIGPIPE, SIG_IGN); /* Ignore sigpipe */
1024 * Ensure all cache and idmap caches are consistent
1025 * and initialized before we startup.
1027 if (!winbindd_cache_validate_and_initialize()) {
1031 /* get broadcast messages */
1033 if (!serverid_register(procid_self(),
1034 FLAG_MSG_GENERAL|FLAG_MSG_DBWRAP)) {
1035 DEBUG(1, ("Could not register myself in serverid.tdb\n"));
1039 /* React on 'smbcontrol winbindd reload-config' in the same way
1040 as to SIGHUP signal */
1041 messaging_register(winbind_messaging_context(), NULL,
1042 MSG_SMB_CONF_UPDATED, msg_reload_services);
1043 messaging_register(winbind_messaging_context(), NULL,
1044 MSG_SHUTDOWN, msg_shutdown);
1046 /* Handle online/offline messages. */
1047 messaging_register(winbind_messaging_context(), NULL,
1048 MSG_WINBIND_OFFLINE, winbind_msg_offline);
1049 messaging_register(winbind_messaging_context(), NULL,
1050 MSG_WINBIND_ONLINE, winbind_msg_online);
1051 messaging_register(winbind_messaging_context(), NULL,
1052 MSG_WINBIND_ONLINESTATUS, winbind_msg_onlinestatus);
1054 messaging_register(winbind_messaging_context(), NULL,
1055 MSG_DUMP_EVENT_LIST, winbind_msg_dump_event_list);
1057 messaging_register(winbind_messaging_context(), NULL,
1058 MSG_WINBIND_VALIDATE_CACHE,
1059 winbind_msg_validate_cache);
1061 messaging_register(winbind_messaging_context(), NULL,
1062 MSG_WINBIND_DUMP_DOMAIN_LIST,
1063 winbind_msg_dump_domain_list);
1065 /* Register handler for MSG_DEBUG. */
1066 messaging_register(winbind_messaging_context(), NULL,
1070 netsamlogon_cache_init(); /* Non-critical */
1072 /* clear the cached list of trusted domains */
1076 if (!init_domain_list()) {
1077 DEBUG(0,("unable to initialize domain list\n"));
1082 init_locator_child();
1084 smb_nscd_flush_user_cache();
1085 smb_nscd_flush_group_cache();
1087 te = tevent_add_timer(winbind_event_context(), NULL, timeval_zero(),
1088 rescan_trusted_domains, NULL);
1090 DEBUG(0, ("Could not trigger rescan_trusted_domains()\n"));
1098 int main(int argc, char **argv, char **envp)
1100 static bool is_daemon = False;
1101 static bool Fork = True;
1102 static bool log_stdout = False;
1103 static bool no_process_group = False;
1107 OPT_NO_PROCESS_GROUP,
1110 struct poptOption long_options[] = {
1112 { "stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1113 { "foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Daemon in foreground mode" },
1114 { "no-process-group", 0, POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1115 { "daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1116 { "interactive", 'i', POPT_ARG_NONE, NULL, 'i', "Interactive mode" },
1117 { "no-caching", 'n', POPT_ARG_NONE, NULL, 'n', "Disable caching" },
1123 TALLOC_CTX *frame = talloc_stackframe();
1126 /* glibc (?) likes to print "User defined signal 1" and exit if a
1127 SIGUSR[12] is received before a handler is installed */
1129 CatchSignal(SIGUSR1, SIG_IGN);
1130 CatchSignal(SIGUSR2, SIG_IGN);
1132 fault_setup((void (*)(void *))fault_quit );
1133 dump_core_setup("winbindd");
1137 /* Initialise for running in non-root mode */
1141 set_remote_machine_name("winbindd", False);
1143 /* Set environment variable so we don't recursively call ourselves.
1144 This may also be useful interactively. */
1146 if ( !winbind_off() ) {
1147 DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
1151 /* Initialise samba/rpc client stuff */
1153 pc = poptGetContext("winbindd", argc, (const char **)argv, long_options, 0);
1155 while ((opt = poptGetNextOpt(pc)) != -1) {
1157 /* Don't become a daemon */
1169 case OPT_NO_PROCESS_GROUP:
1170 no_process_group = true;
1172 case OPT_LOG_STDOUT:
1179 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1180 poptBadOption(pc, 0), poptStrerror(opt));
1181 poptPrintUsage(pc, stderr, 0);
1186 if (is_daemon && interactive) {
1187 d_fprintf(stderr,"\nERROR: "
1188 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
1189 poptPrintUsage(pc, stderr, 0);
1193 if (log_stdout && Fork) {
1194 d_fprintf(stderr, "\nERROR: "
1195 "Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n\n");
1196 poptPrintUsage(pc, stderr, 0);
1200 poptFreeContext(pc);
1202 if (!override_logfile) {
1204 if (asprintf(&lfile,"%s/log.winbindd",
1205 get_dyn_LOGFILEBASE()) > 0) {
1206 lp_set_logfile(lfile);
1210 setup_logging("winbindd", log_stdout);
1213 DEBUG(0,("winbindd version %s started.\n", samba_version_string()));
1214 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1216 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1217 DEBUG(0, ("error opening config file\n"));
1221 /* Initialise messaging system */
1223 if (winbind_messaging_context() == NULL) {
1227 if (!reload_services_file(NULL)) {
1228 DEBUG(0, ("error opening config file\n"));
1232 if (!directory_exist(lp_lockdir())) {
1233 mkdir(lp_lockdir(), 0755);
1243 if (!secrets_init()) {
1245 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1249 /* Unblock all signals we are interested in as they may have been
1250 blocked by the parent process. */
1252 BlockSignals(False, SIGINT);
1253 BlockSignals(False, SIGQUIT);
1254 BlockSignals(False, SIGTERM);
1255 BlockSignals(False, SIGUSR1);
1256 BlockSignals(False, SIGUSR2);
1257 BlockSignals(False, SIGHUP);
1258 BlockSignals(False, SIGCHLD);
1261 become_daemon(Fork, no_process_group, log_stdout);
1263 pidfile_create("winbindd");
1267 * If we're interactive we want to set our own process group for
1268 * signal management.
1270 if (interactive && !no_process_group)
1271 setpgid( (pid_t)0, (pid_t)0);
1276 /* Don't use winbindd_reinit_after_fork here as
1277 * we're just starting up and haven't created any
1278 * winbindd-specific resources we must free yet. JRA.
1281 status = reinit_after_fork(winbind_messaging_context(),
1282 winbind_event_context(),
1283 procid_self(), false);
1284 if (!NT_STATUS_IS_OK(status)) {
1285 DEBUG(0,("reinit_after_fork() failed\n"));
1289 winbindd_register_handlers();
1291 rpc_lsarpc_init(NULL);
1292 rpc_samr_init(NULL);
1294 if (!init_system_info()) {
1295 DEBUG(0,("ERROR: failed to setup system user info.\n"));
1299 /* setup listen sockets */
1301 if (!winbindd_setup_listeners()) {
1302 DEBUG(0,("winbindd_setup_listeners() failed\n"));
1307 /* Loop waiting for requests */
1309 frame = talloc_stackframe();
1311 if (tevent_loop_once(winbind_event_context()) == -1) {
1312 DEBUG(1, ("tevent_loop_once() failed: %s\n",