2 Unix SMB/CIFS implementation.
4 Winbind daemon connection manager
6 Copyright (C) Tim Potter 2001
7 Copyright (C) Andrew Bartlett 2002
8 Copyright (C) Gerald (Jerry) Carter 2003-2005.
9 Copyright (C) Volker Lendecke 2004-2005
10 Copyright (C) Jeremy Allison 2006
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 3 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 We need to manage connections to domain controllers without having to
28 mess up the main winbindd code with other issues. The aim of the
29 connection manager is to:
31 - make connections to domain controllers and cache them
32 - re-establish connections when networks or servers go down
33 - centralise the policy on connection timeouts, domain controller
35 - manage re-entrancy for when winbindd becomes able to handle
36 multiple outstanding rpc requests
38 Why not have connection management as part of the rpc layer like tng?
39 Good question. This code may morph into libsmb/rpc_cache.c or something
40 like that but at the moment it's simply staying as part of winbind. I
41 think the TNG architecture of forcing every user of the rpc layer to use
42 the connection caching system is a bad idea. It should be an optional
43 method of using the routines.
45 The TNG design is quite good but I disagree with some aspects of the
53 - I'm pretty annoyed by all the make_nmb_name() stuff. It should be
54 moved down into another function.
56 - Take care when destroying cli_structs as they can be shared between
65 #define DBGC_CLASS DBGC_WINBIND
69 struct sockaddr_storage ss;
72 extern struct winbindd_methods reconnect_methods;
73 extern bool override_logfile;
75 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain);
76 static void set_dc_type_and_flags( struct winbindd_domain *domain );
77 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
78 struct dc_name_ip **dcs, int *num_dcs);
80 /****************************************************************
81 Child failed to find DC's. Reschedule check.
82 ****************************************************************/
84 static void msg_failed_to_go_online(struct messaging_context *msg,
87 struct server_id server_id,
90 struct winbindd_domain *domain;
91 const char *domainname = (const char *)data->data;
93 if (data->data == NULL || data->length == 0) {
97 DEBUG(5,("msg_fail_to_go_online: received for domain %s.\n", domainname));
99 for (domain = domain_list(); domain; domain = domain->next) {
100 if (domain->internal) {
104 if (strequal(domain->name, domainname)) {
105 if (domain->online) {
106 /* We're already online, ignore. */
107 DEBUG(5,("msg_fail_to_go_online: domain %s "
108 "already online.\n", domainname));
112 /* Reschedule the online check. */
113 set_domain_offline(domain);
119 /****************************************************************
120 Actually cause a reconnect from a message.
121 ****************************************************************/
123 static void msg_try_to_go_online(struct messaging_context *msg,
126 struct server_id server_id,
129 struct winbindd_domain *domain;
130 const char *domainname = (const char *)data->data;
132 if (data->data == NULL || data->length == 0) {
136 DEBUG(5,("msg_try_to_go_online: received for domain %s.\n", domainname));
138 for (domain = domain_list(); domain; domain = domain->next) {
139 if (domain->internal) {
143 if (strequal(domain->name, domainname)) {
145 if (domain->online) {
146 /* We're already online, ignore. */
147 DEBUG(5,("msg_try_to_go_online: domain %s "
148 "already online.\n", domainname));
152 /* This call takes care of setting the online
153 flag to true if we connected, or re-adding
154 the offline handler if false. Bypasses online
155 check so always does network calls. */
157 init_dc_connection_network(domain);
163 /****************************************************************
164 Fork a child to try and contact a DC. Do this as contacting a
165 DC requires blocking lookups and we don't want to block our
167 ****************************************************************/
169 static bool fork_child_dc_connect(struct winbindd_domain *domain)
171 struct dc_name_ip *dcs = NULL;
173 TALLOC_CTX *mem_ctx = NULL;
174 pid_t parent_pid = sys_getpid();
179 if (domain->dc_probe_pid != (pid_t)-1) {
181 * We might already have a DC probe
182 * child working, check.
184 if (process_exists_by_pid(domain->dc_probe_pid)) {
185 DEBUG(10,("fork_child_dc_connect: pid %u already "
186 "checking for DC's.\n",
187 (unsigned int)domain->dc_probe_pid));
190 domain->dc_probe_pid = (pid_t)-1;
193 domain->dc_probe_pid = sys_fork();
195 if (domain->dc_probe_pid == (pid_t)-1) {
196 DEBUG(0, ("fork_child_dc_connect: Could not fork: %s\n", strerror(errno)));
200 if (domain->dc_probe_pid != (pid_t)0) {
202 messaging_register(winbind_messaging_context(), NULL,
203 MSG_WINBIND_TRY_TO_GO_ONLINE,
204 msg_try_to_go_online);
205 messaging_register(winbind_messaging_context(), NULL,
206 MSG_WINBIND_FAILED_TO_GO_ONLINE,
207 msg_failed_to_go_online);
213 /* Leave messages blocked - we will never process one. */
215 if (!reinit_after_fork(winbind_messaging_context(), true)) {
216 DEBUG(0,("reinit_after_fork() failed\n"));
217 messaging_send_buf(winbind_messaging_context(),
218 pid_to_procid(parent_pid),
219 MSG_WINBIND_FAILED_TO_GO_ONLINE,
220 (uint8 *)domain->name,
221 strlen(domain->name)+1);
225 close_conns_after_fork();
227 if (!override_logfile) {
229 if (asprintf(&lfile, "%s/log.winbindd-dc-connect", get_dyn_LOGFILEBASE()) > 0) {
230 lp_set_logfile(lfile);
236 mem_ctx = talloc_init("fork_child_dc_connect");
238 DEBUG(0,("talloc_init failed.\n"));
239 messaging_send_buf(winbind_messaging_context(),
240 pid_to_procid(parent_pid),
241 MSG_WINBIND_FAILED_TO_GO_ONLINE,
242 (uint8 *)domain->name,
243 strlen(domain->name)+1);
247 if ((!get_dcs(mem_ctx, domain, &dcs, &num_dcs)) || (num_dcs == 0)) {
248 /* Still offline ? Can't find DC's. */
249 messaging_send_buf(winbind_messaging_context(),
250 pid_to_procid(parent_pid),
251 MSG_WINBIND_FAILED_TO_GO_ONLINE,
252 (uint8 *)domain->name,
253 strlen(domain->name)+1);
257 /* We got a DC. Send a message to our parent to get it to
258 try and do the same. */
260 messaging_send_buf(winbind_messaging_context(),
261 pid_to_procid(parent_pid),
262 MSG_WINBIND_TRY_TO_GO_ONLINE,
263 (uint8 *)domain->name,
264 strlen(domain->name)+1);
268 /****************************************************************
269 Handler triggered if we're offline to try and detect a DC.
270 ****************************************************************/
272 static void check_domain_online_handler(struct event_context *ctx,
273 struct timed_event *te,
274 const struct timeval *now,
277 struct winbindd_domain *domain =
278 (struct winbindd_domain *)private_data;
280 DEBUG(10,("check_domain_online_handler: called for domain "
281 "%s (online = %s)\n", domain->name,
282 domain->online ? "True" : "False" ));
284 TALLOC_FREE(domain->check_online_event);
286 /* Are we still in "startup" mode ? */
288 if (domain->startup && (now->tv_sec > domain->startup_time + 30)) {
289 /* No longer in "startup" mode. */
290 DEBUG(10,("check_domain_online_handler: domain %s no longer in 'startup' mode.\n",
292 domain->startup = False;
295 /* We've been told to stay offline, so stay
298 if (get_global_winbindd_state_offline()) {
299 DEBUG(10,("check_domain_online_handler: domain %s remaining globally offline\n",
304 /* Fork a child to test if it can contact a DC.
305 If it can then send ourselves a message to
306 cause a reconnect. */
308 fork_child_dc_connect(domain);
311 /****************************************************************
312 If we're still offline setup the timeout check.
313 ****************************************************************/
315 static void calc_new_online_timeout_check(struct winbindd_domain *domain)
317 int wbr = lp_winbind_reconnect_delay();
319 if (domain->startup) {
320 domain->check_online_timeout = 10;
321 } else if (domain->check_online_timeout < wbr) {
322 domain->check_online_timeout = wbr;
326 /****************************************************************
327 Set domain offline and also add handler to put us back online
329 ****************************************************************/
331 void set_domain_offline(struct winbindd_domain *domain)
333 DEBUG(10,("set_domain_offline: called for domain %s\n",
336 TALLOC_FREE(domain->check_online_event);
338 if (domain->internal) {
339 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
344 domain->online = False;
346 /* Offline domains are always initialized. They're
347 re-initialized when they go back online. */
349 domain->initialized = True;
351 /* We only add the timeout handler that checks and
352 allows us to go back online when we've not
353 been told to remain offline. */
355 if (get_global_winbindd_state_offline()) {
356 DEBUG(10,("set_domain_offline: domain %s remaining globally offline\n",
361 /* If we're in statup mode, check again in 10 seconds, not in
362 lp_winbind_reconnect_delay() seconds (which is 30 seconds by default). */
364 calc_new_online_timeout_check(domain);
366 domain->check_online_event = event_add_timed(winbind_event_context(),
368 timeval_current_ofs(domain->check_online_timeout,0),
369 "check_domain_online_handler",
370 check_domain_online_handler,
373 /* The above *has* to succeed for winbindd to work. */
374 if (!domain->check_online_event) {
375 smb_panic("set_domain_offline: failed to add online handler");
378 DEBUG(10,("set_domain_offline: added event handler for domain %s\n",
381 /* Send an offline message to the idmap child when our
382 primary domain goes offline */
384 if ( domain->primary ) {
385 struct winbindd_child *idmap = idmap_child();
387 if ( idmap->pid != 0 ) {
388 messaging_send_buf(winbind_messaging_context(),
389 pid_to_procid(idmap->pid),
391 (uint8 *)domain->name,
392 strlen(domain->name)+1);
399 /****************************************************************
400 Set domain online - if allowed.
401 ****************************************************************/
403 static void set_domain_online(struct winbindd_domain *domain)
407 DEBUG(10,("set_domain_online: called for domain %s\n",
410 if (domain->internal) {
411 DEBUG(3,("set_domain_online: domain %s is internal - logic error.\n",
416 if (get_global_winbindd_state_offline()) {
417 DEBUG(10,("set_domain_online: domain %s remaining globally offline\n",
422 winbindd_set_locator_kdc_envs(domain);
424 /* If we are waiting to get a krb5 ticket, trigger immediately. */
426 set_event_dispatch_time(winbind_event_context(),
427 "krb5_ticket_gain_handler", now);
429 /* Ok, we're out of any startup mode now... */
430 domain->startup = False;
432 if (domain->online == False) {
433 /* We were offline - now we're online. We default to
434 using the MS-RPC backend if we started offline,
435 and if we're going online for the first time we
436 should really re-initialize the backends and the
437 checks to see if we're talking to an AD or NT domain.
440 domain->initialized = False;
442 /* 'reconnect_methods' is the MS-RPC backend. */
443 if (domain->backend == &reconnect_methods) {
444 domain->backend = NULL;
448 /* Ensure we have no online timeout checks. */
449 domain->check_online_timeout = 0;
450 TALLOC_FREE(domain->check_online_event);
452 /* Ensure we ignore any pending child messages. */
453 messaging_deregister(winbind_messaging_context(),
454 MSG_WINBIND_TRY_TO_GO_ONLINE, NULL);
455 messaging_deregister(winbind_messaging_context(),
456 MSG_WINBIND_FAILED_TO_GO_ONLINE, NULL);
458 domain->online = True;
460 /* Send an online message to the idmap child when our
461 primary domain comes online */
463 if ( domain->primary ) {
464 struct winbindd_child *idmap = idmap_child();
466 if ( idmap->pid != 0 ) {
467 messaging_send_buf(winbind_messaging_context(),
468 pid_to_procid(idmap->pid),
470 (uint8 *)domain->name,
471 strlen(domain->name)+1);
478 /****************************************************************
479 Requested to set a domain online.
480 ****************************************************************/
482 void set_domain_online_request(struct winbindd_domain *domain)
486 DEBUG(10,("set_domain_online_request: called for domain %s\n",
489 if (get_global_winbindd_state_offline()) {
490 DEBUG(10,("set_domain_online_request: domain %s remaining globally offline\n",
495 /* We've been told it's safe to go online and
496 try and connect to a DC. But I don't believe it
497 because network manager seems to lie.
498 Wait at least 5 seconds. Heuristics suck... */
500 if (!domain->check_online_event) {
501 /* If we've come from being globally offline we
502 don't have a check online event handler set.
503 We need to add one now we're trying to go
506 DEBUG(10,("set_domain_online_request: domain %s was globally offline.\n",
509 domain->check_online_event = event_add_timed(winbind_event_context(),
511 timeval_current_ofs(5, 0),
512 "check_domain_online_handler",
513 check_domain_online_handler,
516 /* The above *has* to succeed for winbindd to work. */
517 if (!domain->check_online_event) {
518 smb_panic("set_domain_online_request: failed to add online handler");
524 /* Go into "startup" mode again. */
525 domain->startup_time = tev.tv_sec;
526 domain->startup = True;
530 set_event_dispatch_time(winbind_event_context(), "check_domain_online_handler", tev);
533 /****************************************************************
534 Add -ve connection cache entries for domain and realm.
535 ****************************************************************/
537 void winbind_add_failed_connection_entry(const struct winbindd_domain *domain,
541 add_failed_connection_entry(domain->name, server, result);
542 /* If this was the saf name for the last thing we talked to,
544 saf_delete(domain->name);
545 if (*domain->alt_name) {
546 add_failed_connection_entry(domain->alt_name, server, result);
547 saf_delete(domain->alt_name);
549 winbindd_unset_locator_kdc_env(domain);
552 /* Choose between anonymous or authenticated connections. We need to use
553 an authenticated connection if DCs have the RestrictAnonymous registry
554 entry set > 0, or the "Additional restrictions for anonymous
555 connections" set in the win2k Local Security Policy.
557 Caller to free() result in domain, username, password
560 static void cm_get_ipc_userpass(char **username, char **domain, char **password)
562 *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
563 *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
564 *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
566 if (*username && **username) {
568 if (!*domain || !**domain)
569 *domain = smb_xstrdup(lp_workgroup());
571 if (!*password || !**password)
572 *password = smb_xstrdup("");
574 DEBUG(3, ("cm_get_ipc_userpass: Retrieved auth-user from secrets.tdb [%s\\%s]\n",
575 *domain, *username));
578 DEBUG(3, ("cm_get_ipc_userpass: No auth-user defined\n"));
579 *username = smb_xstrdup("");
580 *domain = smb_xstrdup("");
581 *password = smb_xstrdup("");
585 static bool get_dc_name_via_netlogon(struct winbindd_domain *domain,
587 struct sockaddr_storage *dc_ss)
589 struct winbindd_domain *our_domain = NULL;
590 struct rpc_pipe_client *netlogon_pipe = NULL;
594 unsigned int orig_timeout;
595 const char *tmp = NULL;
598 /* Hmmmm. We can only open one connection to the NETLOGON pipe at the
605 if (domain->primary) {
609 our_domain = find_our_domain();
611 if ((mem_ctx = talloc_init("get_dc_name_via_netlogon")) == NULL) {
615 result = cm_connect_netlogon(our_domain, &netlogon_pipe);
616 if (!NT_STATUS_IS_OK(result)) {
617 talloc_destroy(mem_ctx);
621 /* This call can take a long time - allow the server to time out.
622 35 seconds should do it. */
624 orig_timeout = rpccli_set_timeout(netlogon_pipe, 35000);
626 if (our_domain->active_directory) {
627 struct netr_DsRGetDCNameInfo *domain_info = NULL;
629 result = rpccli_netr_DsRGetDCName(netlogon_pipe,
638 if (W_ERROR_IS_OK(werr)) {
640 mem_ctx, domain_info->dc_unc);
642 DEBUG(0, ("talloc_strdup failed\n"));
643 talloc_destroy(mem_ctx);
646 if (strlen(domain->alt_name) == 0) {
647 fstrcpy(domain->alt_name,
648 domain_info->domain_name);
650 if (strlen(domain->forest_name) == 0) {
651 fstrcpy(domain->forest_name,
652 domain_info->forest_name);
656 result = rpccli_netr_GetAnyDCName(netlogon_pipe, mem_ctx,
663 /* And restore our original timeout. */
664 rpccli_set_timeout(netlogon_pipe, orig_timeout);
666 if (!NT_STATUS_IS_OK(result)) {
667 DEBUG(10,("rpccli_netr_GetAnyDCName failed: %s\n",
669 talloc_destroy(mem_ctx);
673 if (!W_ERROR_IS_OK(werr)) {
674 DEBUG(10,("rpccli_netr_GetAnyDCName failed: %s\n",
676 talloc_destroy(mem_ctx);
680 /* rpccli_netr_GetAnyDCName gives us a name with \\ */
681 p = strip_hostname(tmp);
685 talloc_destroy(mem_ctx);
687 DEBUG(10,("rpccli_netr_GetAnyDCName returned %s\n", dcname));
689 if (!resolve_name(dcname, dc_ss, 0x20)) {
697 * Helper function to assemble trust password and account name
699 static NTSTATUS get_trust_creds(const struct winbindd_domain *domain,
700 char **machine_password,
701 char **machine_account,
702 char **machine_krb5_principal)
704 const char *account_name;
705 const char *name = NULL;
707 /* If we are a DC and this is not our own domain */
712 struct winbindd_domain *our_domain = find_our_domain();
715 return NT_STATUS_INVALID_SERVER_STATE;
717 name = our_domain->name;
720 if (!get_trust_pw_clear(name, machine_password,
721 &account_name, NULL))
723 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
726 if ((machine_account != NULL) &&
727 (asprintf(machine_account, "%s$", account_name) == -1))
729 return NT_STATUS_NO_MEMORY;
732 /* For now assume our machine account only exists in our domain */
734 if (machine_krb5_principal != NULL)
736 struct winbindd_domain *our_domain = find_our_domain();
739 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
742 if (asprintf(machine_krb5_principal, "%s$@%s",
743 account_name, our_domain->alt_name) == -1)
745 return NT_STATUS_NO_MEMORY;
748 strupper_m(*machine_krb5_principal);
754 /************************************************************************
755 Given a fd with a just-connected TCP connection to a DC, open a connection
757 ************************************************************************/
759 static NTSTATUS cm_prepare_connection(const struct winbindd_domain *domain,
761 const char *controller,
762 struct cli_state **cli,
765 char *machine_password = NULL;
766 char *machine_krb5_principal = NULL;
767 char *machine_account = NULL;
768 char *ipc_username = NULL;
769 char *ipc_domain = NULL;
770 char *ipc_password = NULL;
772 struct named_mutex *mutex;
774 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
776 struct sockaddr peeraddr;
777 socklen_t peeraddr_len;
779 struct sockaddr_in *peeraddr_in = (struct sockaddr_in *)&peeraddr;
781 DEBUG(10,("cm_prepare_connection: connecting to DC %s for domain %s\n",
782 controller, domain->name ));
786 mutex = grab_named_mutex(talloc_tos(), controller,
787 WINBIND_SERVER_MUTEX_WAIT_TIME);
789 DEBUG(0,("cm_prepare_connection: mutex grab failed for %s\n",
791 result = NT_STATUS_POSSIBLE_DEADLOCK;
795 if ((*cli = cli_initialise()) == NULL) {
796 DEBUG(1, ("Could not cli_initialize\n"));
797 result = NT_STATUS_NO_MEMORY;
801 (*cli)->timeout = 10000; /* 10 seconds */
803 fstrcpy((*cli)->desthost, controller);
804 (*cli)->use_kerberos = True;
806 peeraddr_len = sizeof(peeraddr);
808 if ((getpeername((*cli)->fd, &peeraddr, &peeraddr_len) != 0) ||
809 (peeraddr_len != sizeof(struct sockaddr_in)) ||
810 (peeraddr_in->sin_family != PF_INET))
812 DEBUG(0,("cm_prepare_connection: %s\n", strerror(errno)));
813 result = NT_STATUS_UNSUCCESSFUL;
817 if (ntohs(peeraddr_in->sin_port) == 139) {
818 struct nmb_name calling;
819 struct nmb_name called;
821 make_nmb_name(&calling, global_myname(), 0x0);
822 make_nmb_name(&called, "*SMBSERVER", 0x20);
824 if (!cli_session_request(*cli, &calling, &called)) {
825 DEBUG(8, ("cli_session_request failed for %s\n",
827 result = NT_STATUS_UNSUCCESSFUL;
832 cli_setup_signing_state(*cli, Undefined);
834 result = cli_negprot(*cli);
836 if (!NT_STATUS_IS_OK(result)) {
837 DEBUG(1, ("cli_negprot failed: %s\n", nt_errstr(result)));
841 if (!is_dc_trusted_domain_situation(domain->name) &&
842 (*cli)->protocol >= PROTOCOL_NT1 &&
843 (*cli)->capabilities & CAP_EXTENDED_SECURITY)
845 ADS_STATUS ads_status;
847 result = get_trust_creds(domain, &machine_password,
849 &machine_krb5_principal);
850 if (!NT_STATUS_IS_OK(result)) {
854 if (lp_security() == SEC_ADS) {
856 /* Try a krb5 session */
858 (*cli)->use_kerberos = True;
859 DEBUG(5, ("connecting to %s from %s with kerberos principal "
860 "[%s] and realm [%s]\n", controller, global_myname(),
861 machine_krb5_principal, domain->alt_name));
863 winbindd_set_locator_kdc_envs(domain);
865 ads_status = cli_session_setup_spnego(*cli,
866 machine_krb5_principal,
871 if (!ADS_ERR_OK(ads_status)) {
872 DEBUG(4,("failed kerberos session setup with %s\n",
873 ads_errstr(ads_status)));
876 result = ads_ntstatus(ads_status);
877 if (NT_STATUS_IS_OK(result)) {
878 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
879 cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
880 goto session_setup_done;
884 /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the machine account. */
885 (*cli)->use_kerberos = False;
887 DEBUG(5, ("connecting to %s from %s with username "
888 "[%s]\\[%s]\n", controller, global_myname(),
889 lp_workgroup(), machine_account));
891 ads_status = cli_session_setup_spnego(*cli,
896 if (!ADS_ERR_OK(ads_status)) {
897 DEBUG(4, ("authenticated session setup failed with %s\n",
898 ads_errstr(ads_status)));
901 result = ads_ntstatus(ads_status);
902 if (NT_STATUS_IS_OK(result)) {
903 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
904 cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
905 goto session_setup_done;
909 /* Fall back to non-kerberos session setup with auth_user */
911 (*cli)->use_kerberos = False;
913 cm_get_ipc_userpass(&ipc_username, &ipc_domain, &ipc_password);
915 if ((((*cli)->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) != 0) &&
916 (strlen(ipc_username) > 0)) {
918 /* Only try authenticated if we have a username */
920 DEBUG(5, ("connecting to %s from %s with username "
921 "[%s]\\[%s]\n", controller, global_myname(),
922 ipc_domain, ipc_username));
924 if (NT_STATUS_IS_OK(cli_session_setup(
926 ipc_password, strlen(ipc_password)+1,
927 ipc_password, strlen(ipc_password)+1,
929 /* Successful logon with given username. */
930 cli_init_creds(*cli, ipc_username, ipc_domain, ipc_password);
931 goto session_setup_done;
933 DEBUG(4, ("authenticated session setup with user %s\\%s failed.\n",
934 ipc_domain, ipc_username ));
940 /* Fall back to anonymous connection, this might fail later */
941 DEBUG(10,("cm_prepare_connection: falling back to anonymous "
942 "connection for DC %s\n",
945 if (NT_STATUS_IS_OK(cli_session_setup(*cli, "", NULL, 0,
947 DEBUG(5, ("Connected anonymously\n"));
948 cli_init_creds(*cli, "", "", "");
949 goto session_setup_done;
952 result = cli_nt_error(*cli);
954 if (NT_STATUS_IS_OK(result))
955 result = NT_STATUS_UNSUCCESSFUL;
957 /* We can't session setup */
963 /* cache the server name for later connections */
965 saf_store( domain->name, (*cli)->desthost );
966 if (domain->alt_name && (*cli)->use_kerberos) {
967 saf_store( domain->alt_name, (*cli)->desthost );
970 winbindd_set_locator_kdc_envs(domain);
972 if (!cli_send_tconX(*cli, "IPC$", "IPC", "", 0)) {
974 result = cli_nt_error(*cli);
976 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(result)));
978 if (NT_STATUS_IS_OK(result))
979 result = NT_STATUS_UNSUCCESSFUL;
987 /* set the domain if empty; needed for schannel connections */
988 if ( !*(*cli)->domain ) {
989 fstrcpy( (*cli)->domain, domain->name );
992 result = NT_STATUS_OK;
996 SAFE_FREE(machine_account);
997 SAFE_FREE(machine_password);
998 SAFE_FREE(machine_krb5_principal);
999 SAFE_FREE(ipc_username);
1000 SAFE_FREE(ipc_domain);
1001 SAFE_FREE(ipc_password);
1003 if (!NT_STATUS_IS_OK(result)) {
1004 winbind_add_failed_connection_entry(domain, controller, result);
1005 if ((*cli) != NULL) {
1014 /*******************************************************************
1015 Add a dcname and sockaddr_storage pair to the end of a dc_name_ip
1018 Keeps the list unique by not adding duplicate entries.
1020 @param[in] mem_ctx talloc memory context to allocate from
1021 @param[in] domain_name domain of the DC
1022 @param[in] dcname name of the DC to add to the list
1023 @param[in] pss Internet address and port pair to add to the list
1024 @param[in,out] dcs array of dc_name_ip structures to add to
1025 @param[in,out] num_dcs number of dcs returned in the dcs array
1026 @return true if the list was added to, false otherwise
1027 *******************************************************************/
1029 static bool add_one_dc_unique(TALLOC_CTX *mem_ctx, const char *domain_name,
1030 const char *dcname, struct sockaddr_storage *pss,
1031 struct dc_name_ip **dcs, int *num)
1035 if (!NT_STATUS_IS_OK(check_negative_conn_cache(domain_name, dcname))) {
1036 DEBUG(10, ("DC %s was in the negative conn cache\n", dcname));
1040 /* Make sure there's no duplicates in the list */
1041 for (i=0; i<*num; i++)
1042 if (sockaddr_equal((struct sockaddr *)&(*dcs)[i].ss, (struct sockaddr *)pss))
1045 *dcs = TALLOC_REALLOC_ARRAY(mem_ctx, *dcs, struct dc_name_ip, (*num)+1);
1050 fstrcpy((*dcs)[*num].name, dcname);
1051 (*dcs)[*num].ss = *pss;
1056 static bool add_sockaddr_to_array(TALLOC_CTX *mem_ctx,
1057 struct sockaddr_storage *pss, uint16 port,
1058 struct sockaddr_storage **addrs, int *num)
1060 *addrs = TALLOC_REALLOC_ARRAY(mem_ctx, *addrs, struct sockaddr_storage, (*num)+1);
1062 if (*addrs == NULL) {
1067 (*addrs)[*num] = *pss;
1068 set_sockaddr_port((struct sockaddr *)&(*addrs)[*num], port);
1074 /*******************************************************************
1075 convert an ip to a name
1076 *******************************************************************/
1078 static bool dcip_to_name(TALLOC_CTX *mem_ctx,
1079 const struct winbindd_domain *domain,
1080 struct sockaddr_storage *pss,
1083 struct ip_service ip_list;
1084 uint32_t nt_version = NETLOGON_NT_VERSION_1;
1090 /* For active directory servers, try to get the ldap server name.
1091 None of these failures should be considered critical for now */
1093 if (lp_security() == SEC_ADS) {
1095 ADS_STATUS ads_status;
1096 char addr[INET6_ADDRSTRLEN];
1098 print_sockaddr(addr, sizeof(addr), pss);
1100 ads = ads_init(domain->alt_name, domain->name, addr);
1101 ads->auth.flags |= ADS_AUTH_NO_BIND;
1103 ads_status = ads_connect(ads);
1104 if (ADS_ERR_OK(ads_status)) {
1105 /* We got a cldap packet. */
1106 fstrcpy(name, ads->config.ldap_server_name);
1107 namecache_store(name, 0x20, 1, &ip_list);
1109 DEBUG(10,("dcip_to_name: flags = 0x%x\n", (unsigned int)ads->config.flags));
1111 if (domain->primary && (ads->config.flags & NBT_SERVER_KDC)) {
1112 if (ads_closest_dc(ads)) {
1113 char *sitename = sitename_fetch(ads->config.realm);
1115 /* We're going to use this KDC for this realm/domain.
1116 If we are using sites, then force the krb5 libs
1119 create_local_private_krb5_conf_for_domain(domain->alt_name,
1124 SAFE_FREE(sitename);
1126 /* use an off site KDC */
1127 create_local_private_krb5_conf_for_domain(domain->alt_name,
1132 winbindd_set_locator_kdc_envs(domain);
1134 /* Ensure we contact this DC also. */
1135 saf_store( domain->name, name);
1136 saf_store( domain->alt_name, name);
1139 ads_destroy( &ads );
1143 ads_destroy( &ads );
1147 /* try GETDC requests next */
1149 if (send_getdc_request(mem_ctx, winbind_messaging_context(),
1150 pss, domain->name, &domain->sid,
1152 const char *dc_name = NULL;
1155 for (i=0; i<5; i++) {
1156 if (receive_getdc_response(mem_ctx, pss, domain->name,
1159 fstrcpy(name, dc_name);
1160 namecache_store(name, 0x20, 1, &ip_list);
1167 /* try node status request */
1169 if ( name_status_find(domain->name, 0x1c, 0x20, pss, name) ) {
1170 namecache_store(name, 0x20, 1, &ip_list);
1176 /*******************************************************************
1177 Retrieve a list of IP addresses for domain controllers.
1179 The array is sorted in the preferred connection order.
1181 @param[in] mem_ctx talloc memory context to allocate from
1182 @param[in] domain domain to retrieve DCs for
1183 @param[out] dcs array of dcs that will be returned
1184 @param[out] num_dcs number of dcs returned in the dcs array
1186 *******************************************************************/
1188 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
1189 struct dc_name_ip **dcs, int *num_dcs)
1192 struct sockaddr_storage ss;
1193 struct ip_service *ip_list = NULL;
1194 int iplist_size = 0;
1197 enum security_types sec = (enum security_types)lp_security();
1199 is_our_domain = strequal(domain->name, lp_workgroup());
1201 /* If not our domain, get the preferred DC, by asking our primary DC */
1203 && get_dc_name_via_netlogon(domain, dcname, &ss)
1204 && add_one_dc_unique(mem_ctx, domain->name, dcname, &ss, dcs,
1207 char addr[INET6_ADDRSTRLEN];
1208 print_sockaddr(addr, sizeof(addr), &ss);
1209 DEBUG(10, ("Retrieved DC %s at %s via netlogon\n",
1214 if (sec == SEC_ADS) {
1215 char *sitename = NULL;
1217 /* We need to make sure we know the local site before
1218 doing any DNS queries, as this will restrict the
1219 get_sorted_dc_list() call below to only fetching
1220 DNS records for the correct site. */
1222 /* Find any DC to get the site record.
1223 We deliberately don't care about the
1226 get_dc_name(domain->name, domain->alt_name, dcname, &ss);
1228 sitename = sitename_fetch(domain->alt_name);
1231 /* Do the site-specific AD dns lookup first. */
1232 get_sorted_dc_list(domain->alt_name, sitename, &ip_list,
1233 &iplist_size, True);
1235 /* Add ips to the DC array. We don't look up the name
1236 of the DC in this function, but we fill in the char*
1237 of the ip now to make the failed connection cache
1239 for ( i=0; i<iplist_size; i++ ) {
1240 char addr[INET6_ADDRSTRLEN];
1241 print_sockaddr(addr, sizeof(addr),
1243 add_one_dc_unique(mem_ctx,
1252 SAFE_FREE(sitename);
1256 /* Now we add DCs from the main AD DNS lookup. */
1257 get_sorted_dc_list(domain->alt_name, NULL, &ip_list,
1258 &iplist_size, True);
1260 for ( i=0; i<iplist_size; i++ ) {
1261 char addr[INET6_ADDRSTRLEN];
1262 print_sockaddr(addr, sizeof(addr),
1264 add_one_dc_unique(mem_ctx,
1276 /* Try standard netbios queries if no ADS */
1277 if (*num_dcs == 0) {
1278 get_sorted_dc_list(domain->name, NULL, &ip_list, &iplist_size,
1281 for ( i=0; i<iplist_size; i++ ) {
1282 char addr[INET6_ADDRSTRLEN];
1283 print_sockaddr(addr, sizeof(addr),
1285 add_one_dc_unique(mem_ctx,
1300 /*******************************************************************
1301 Find and make a connection to a DC in the given domain.
1303 @param[in] mem_ctx talloc memory context to allocate from
1304 @param[in] domain domain to find a dc in
1305 @param[out] dcname NetBIOS or FQDN of DC that's connected to
1306 @param[out] pss DC Internet address and port
1307 @param[out] fd fd of the open socket connected to the newly found dc
1308 @return true when a DC connection is made, false otherwise
1309 *******************************************************************/
1311 static bool find_new_dc(TALLOC_CTX *mem_ctx,
1312 struct winbindd_domain *domain,
1313 fstring dcname, struct sockaddr_storage *pss, int *fd)
1315 struct dc_name_ip *dcs = NULL;
1318 const char **dcnames = NULL;
1319 int num_dcnames = 0;
1321 struct sockaddr_storage *addrs = NULL;
1329 if (!get_dcs(mem_ctx, domain, &dcs, &num_dcs) || (num_dcs == 0))
1332 for (i=0; i<num_dcs; i++) {
1334 if (!add_string_to_array(mem_ctx, dcs[i].name,
1335 &dcnames, &num_dcnames)) {
1338 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, 445,
1339 &addrs, &num_addrs)) {
1343 if (!add_string_to_array(mem_ctx, dcs[i].name,
1344 &dcnames, &num_dcnames)) {
1347 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, 139,
1348 &addrs, &num_addrs)) {
1353 if ((num_dcnames == 0) || (num_dcnames != num_addrs))
1356 if ((addrs == NULL) || (dcnames == NULL))
1359 /* 5 second timeout. */
1360 if (!open_any_socket_out(addrs, num_addrs, 5000, &fd_index, fd) ) {
1361 for (i=0; i<num_dcs; i++) {
1362 char ab[INET6_ADDRSTRLEN];
1363 print_sockaddr(ab, sizeof(ab), &dcs[i].ss);
1364 DEBUG(10, ("find_new_dc: open_any_socket_out failed for "
1365 "domain %s address %s. Error was %s\n",
1366 domain->name, ab, strerror(errno) ));
1367 winbind_add_failed_connection_entry(domain,
1368 dcs[i].name, NT_STATUS_UNSUCCESSFUL);
1373 *pss = addrs[fd_index];
1375 if (*dcnames[fd_index] != '\0' && !is_ipaddress(dcnames[fd_index])) {
1376 /* Ok, we've got a name for the DC */
1377 fstrcpy(dcname, dcnames[fd_index]);
1381 /* Try to figure out the name */
1382 if (dcip_to_name(mem_ctx, domain, pss, dcname)) {
1386 /* We can not continue without the DC's name */
1387 winbind_add_failed_connection_entry(domain, dcs[fd_index].name,
1388 NT_STATUS_UNSUCCESSFUL);
1390 /* Throw away all arrays as we're doing this again. */
1394 TALLOC_FREE(dcnames);
1406 static NTSTATUS cm_open_connection(struct winbindd_domain *domain,
1407 struct winbindd_cm_conn *new_conn)
1409 TALLOC_CTX *mem_ctx;
1411 char *saf_servername = saf_fetch( domain->name );
1414 if ((mem_ctx = talloc_init("cm_open_connection")) == NULL) {
1415 SAFE_FREE(saf_servername);
1416 set_domain_offline(domain);
1417 return NT_STATUS_NO_MEMORY;
1420 /* we have to check the server affinity cache here since
1421 later we selecte a DC based on response time and not preference */
1423 /* Check the negative connection cache
1424 before talking to it. It going down may have
1425 triggered the reconnection. */
1427 if ( saf_servername && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, saf_servername))) {
1429 DEBUG(10,("cm_open_connection: saf_servername is '%s' for domain %s\n",
1430 saf_servername, domain->name ));
1432 /* convert an ip address to a name */
1433 if (is_ipaddress( saf_servername ) ) {
1435 struct sockaddr_storage ss;
1437 if (!interpret_string_addr(&ss, saf_servername,
1439 return NT_STATUS_UNSUCCESSFUL;
1441 if (dcip_to_name(mem_ctx, domain, &ss, saf_name )) {
1442 fstrcpy( domain->dcname, saf_name );
1444 winbind_add_failed_connection_entry(
1445 domain, saf_servername,
1446 NT_STATUS_UNSUCCESSFUL);
1449 fstrcpy( domain->dcname, saf_servername );
1452 SAFE_FREE( saf_servername );
1455 for (retries = 0; retries < 3; retries++) {
1459 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1461 DEBUG(10,("cm_open_connection: dcname is '%s' for domain %s\n",
1462 domain->dcname, domain->name ));
1465 && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, domain->dcname))
1466 && (resolve_name(domain->dcname, &domain->dcaddr, 0x20)))
1468 struct sockaddr_storage *addrs = NULL;
1472 if (!add_sockaddr_to_array(mem_ctx, &domain->dcaddr, 445, &addrs, &num_addrs)) {
1473 set_domain_offline(domain);
1474 talloc_destroy(mem_ctx);
1475 return NT_STATUS_NO_MEMORY;
1477 if (!add_sockaddr_to_array(mem_ctx, &domain->dcaddr, 139, &addrs, &num_addrs)) {
1478 set_domain_offline(domain);
1479 talloc_destroy(mem_ctx);
1480 return NT_STATUS_NO_MEMORY;
1483 /* 5 second timeout. */
1484 if (!open_any_socket_out(addrs, num_addrs, 5000, &dummy, &fd)) {
1490 && !find_new_dc(mem_ctx, domain, domain->dcname, &domain->dcaddr, &fd))
1492 /* This is the one place where we will
1493 set the global winbindd offline state
1494 to true, if a "WINBINDD_OFFLINE" entry
1495 is found in the winbindd cache. */
1496 set_global_winbindd_state_offline();
1500 new_conn->cli = NULL;
1502 result = cm_prepare_connection(domain, fd, domain->dcname,
1503 &new_conn->cli, &retry);
1509 if (NT_STATUS_IS_OK(result)) {
1511 winbindd_set_locator_kdc_envs(domain);
1513 if (domain->online == False) {
1514 /* We're changing state from offline to online. */
1515 set_global_winbindd_state_online();
1517 set_domain_online(domain);
1519 /* Ensure we setup the retry handler. */
1520 set_domain_offline(domain);
1523 talloc_destroy(mem_ctx);
1527 /* Close down all open pipes on a connection. */
1529 void invalidate_cm_connection(struct winbindd_cm_conn *conn)
1531 /* We're closing down a possibly dead
1532 connection. Don't have impossibly long (10s) timeouts. */
1535 cli_set_timeout(conn->cli, 1000); /* 1 second. */
1538 if (conn->samr_pipe != NULL) {
1539 TALLOC_FREE(conn->samr_pipe);
1540 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1542 cli_set_timeout(conn->cli, 500);
1546 if (conn->lsa_pipe != NULL) {
1547 TALLOC_FREE(conn->lsa_pipe);
1548 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1550 cli_set_timeout(conn->cli, 500);
1554 if (conn->netlogon_pipe != NULL) {
1555 TALLOC_FREE(conn->netlogon_pipe);
1556 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1558 cli_set_timeout(conn->cli, 500);
1563 cli_shutdown(conn->cli);
1569 void close_conns_after_fork(void)
1571 struct winbindd_domain *domain;
1573 for (domain = domain_list(); domain; domain = domain->next) {
1574 if (domain->conn.cli == NULL)
1577 if (domain->conn.cli->fd == -1)
1580 close(domain->conn.cli->fd);
1581 domain->conn.cli->fd = -1;
1585 static bool connection_ok(struct winbindd_domain *domain)
1587 if (domain->conn.cli == NULL) {
1588 DEBUG(8, ("connection_ok: Connection to %s for domain %s has NULL "
1589 "cli!\n", domain->dcname, domain->name));
1593 if (!domain->conn.cli->initialised) {
1594 DEBUG(3, ("connection_ok: Connection to %s for domain %s was never "
1595 "initialised!\n", domain->dcname, domain->name));
1599 if (domain->conn.cli->fd == -1) {
1600 DEBUG(3, ("connection_ok: Connection to %s for domain %s has died or was "
1601 "never started (fd == -1)\n",
1602 domain->dcname, domain->name));
1606 if (domain->online == False) {
1607 DEBUG(3, ("connection_ok: Domain %s is offline\n", domain->name));
1614 /* Initialize a new connection up to the RPC BIND.
1615 Bypass online status check so always does network calls. */
1617 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain)
1621 /* Internal connections never use the network. */
1622 if (domain->internal) {
1623 domain->initialized = True;
1624 return NT_STATUS_OK;
1627 if (connection_ok(domain)) {
1628 if (!domain->initialized) {
1629 set_dc_type_and_flags(domain);
1631 return NT_STATUS_OK;
1634 invalidate_cm_connection(&domain->conn);
1636 result = cm_open_connection(domain, &domain->conn);
1638 if (NT_STATUS_IS_OK(result) && !domain->initialized) {
1639 set_dc_type_and_flags(domain);
1645 NTSTATUS init_dc_connection(struct winbindd_domain *domain)
1647 if (domain->initialized && !domain->online) {
1648 /* We check for online status elsewhere. */
1649 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1652 return init_dc_connection_network(domain);
1655 /******************************************************************************
1656 Set the trust flags (direction and forest location) for a domain
1657 ******************************************************************************/
1659 static bool set_dc_type_and_flags_trustinfo( struct winbindd_domain *domain )
1661 struct winbindd_domain *our_domain;
1662 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1663 struct netr_DomainTrustList trusts;
1665 uint32 flags = (NETR_TRUST_FLAG_IN_FOREST |
1666 NETR_TRUST_FLAG_OUTBOUND |
1667 NETR_TRUST_FLAG_INBOUND);
1668 struct rpc_pipe_client *cli;
1669 TALLOC_CTX *mem_ctx = NULL;
1671 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s\n", domain->name ));
1673 /* Our primary domain doesn't need to worry about trust flags.
1674 Force it to go through the network setup */
1675 if ( domain->primary ) {
1679 our_domain = find_our_domain();
1681 if ( !connection_ok(our_domain) ) {
1682 DEBUG(3,("set_dc_type_and_flags_trustinfo: No connection to our domain!\n"));
1686 /* This won't work unless our domain is AD */
1688 if ( !our_domain->active_directory ) {
1692 /* Use DsEnumerateDomainTrusts to get us the trust direction
1695 result = cm_connect_netlogon(our_domain, &cli);
1697 if (!NT_STATUS_IS_OK(result)) {
1698 DEBUG(5, ("set_dc_type_and_flags_trustinfo: Could not open "
1699 "a connection to %s for PIPE_NETLOGON (%s)\n",
1700 domain->name, nt_errstr(result)));
1704 if ( (mem_ctx = talloc_init("set_dc_type_and_flags_trustinfo")) == NULL ) {
1705 DEBUG(0,("set_dc_type_and_flags_trustinfo: talloc_init() failed!\n"));
1709 result = rpccli_netr_DsrEnumerateDomainTrusts(cli, mem_ctx,
1714 if (!NT_STATUS_IS_OK(result)) {
1715 DEBUG(0,("set_dc_type_and_flags_trustinfo: "
1716 "failed to query trusted domain list: %s\n",
1717 nt_errstr(result)));
1718 talloc_destroy(mem_ctx);
1722 /* Now find the domain name and get the flags */
1724 for ( i=0; i<trusts.count; i++ ) {
1725 if ( strequal( domain->name, trusts.array[i].netbios_name) ) {
1726 domain->domain_flags = trusts.array[i].trust_flags;
1727 domain->domain_type = trusts.array[i].trust_type;
1728 domain->domain_trust_attribs = trusts.array[i].trust_attributes;
1730 if ( domain->domain_type == NETR_TRUST_TYPE_UPLEVEL )
1731 domain->active_directory = True;
1733 /* This flag is only set if the domain is *our*
1734 primary domain and the primary domain is in
1737 domain->native_mode = (domain->domain_flags & NETR_TRUST_FLAG_NATIVE);
1739 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s is %sin "
1740 "native mode.\n", domain->name,
1741 domain->native_mode ? "" : "NOT "));
1743 DEBUG(5,("set_dc_type_and_flags_trustinfo: domain %s is %s"
1744 "running active directory.\n", domain->name,
1745 domain->active_directory ? "" : "NOT "));
1748 domain->initialized = True;
1750 if ( !winbindd_can_contact_domain( domain) )
1751 domain->internal = True;
1757 talloc_destroy( mem_ctx );
1759 return domain->initialized;
1762 /******************************************************************************
1763 We can 'sense' certain things about the DC by it's replies to certain
1766 This tells us if this particular remote server is Active Directory, and if it
1768 ******************************************************************************/
1770 static void set_dc_type_and_flags_connect( struct winbindd_domain *domain )
1774 TALLOC_CTX *mem_ctx = NULL;
1775 struct rpc_pipe_client *cli;
1777 union dssetup_DsRoleInfo info;
1778 union lsa_PolicyInformation *lsa_info = NULL;
1780 if (!connection_ok(domain)) {
1784 mem_ctx = talloc_init("set_dc_type_and_flags on domain %s\n",
1787 DEBUG(1, ("set_dc_type_and_flags_connect: talloc_init() failed\n"));
1791 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s\n", domain->name ));
1793 result = cli_rpc_pipe_open_noauth(domain->conn.cli,
1794 &ndr_table_dssetup.syntax_id,
1797 if (!NT_STATUS_IS_OK(result)) {
1798 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1799 "PI_DSSETUP on domain %s: (%s)\n",
1800 domain->name, nt_errstr(result)));
1802 /* if this is just a non-AD domain we need to continue
1803 * identifying so that we can in the end return with
1804 * domain->initialized = True - gd */
1809 result = rpccli_dssetup_DsRoleGetPrimaryDomainInformation(cli, mem_ctx,
1810 DS_ROLE_BASIC_INFORMATION,
1815 if (!NT_STATUS_IS_OK(result)) {
1816 DEBUG(5, ("set_dc_type_and_flags_connect: rpccli_ds_getprimarydominfo "
1817 "on domain %s failed: (%s)\n",
1818 domain->name, nt_errstr(result)));
1820 /* older samba3 DCs will return DCERPC_FAULT_OP_RNG_ERROR for
1821 * every opcode on the DSSETUP pipe, continue with
1822 * no_dssetup mode here as well to get domain->initialized
1825 if (NT_STATUS_V(result) == DCERPC_FAULT_OP_RNG_ERROR) {
1829 TALLOC_FREE(mem_ctx);
1833 if ((info.basic.flags & DS_ROLE_PRIMARY_DS_RUNNING) &&
1834 !(info.basic.flags & DS_ROLE_PRIMARY_DS_MIXED_MODE)) {
1835 domain->native_mode = True;
1837 domain->native_mode = False;
1841 result = cli_rpc_pipe_open_noauth(domain->conn.cli,
1842 &ndr_table_lsarpc.syntax_id, &cli);
1844 if (!NT_STATUS_IS_OK(result)) {
1845 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1846 "PI_LSARPC on domain %s: (%s)\n",
1847 domain->name, nt_errstr(result)));
1849 TALLOC_FREE(mem_ctx);
1853 result = rpccli_lsa_open_policy2(cli, mem_ctx, True,
1854 SEC_RIGHTS_MAXIMUM_ALLOWED, &pol);
1856 if (NT_STATUS_IS_OK(result)) {
1857 /* This particular query is exactly what Win2k clients use
1858 to determine that the DC is active directory */
1859 result = rpccli_lsa_QueryInfoPolicy2(cli, mem_ctx,
1861 LSA_POLICY_INFO_DNS,
1865 if (NT_STATUS_IS_OK(result)) {
1866 domain->active_directory = True;
1868 if (lsa_info->dns.name.string) {
1869 fstrcpy(domain->name, lsa_info->dns.name.string);
1872 if (lsa_info->dns.dns_domain.string) {
1873 fstrcpy(domain->alt_name,
1874 lsa_info->dns.dns_domain.string);
1877 /* See if we can set some domain trust flags about
1880 if (lsa_info->dns.dns_forest.string) {
1881 fstrcpy(domain->forest_name,
1882 lsa_info->dns.dns_forest.string);
1884 if (strequal(domain->forest_name, domain->alt_name)) {
1885 domain->domain_flags |= NETR_TRUST_FLAG_TREEROOT;
1889 if (lsa_info->dns.sid) {
1890 sid_copy(&domain->sid, lsa_info->dns.sid);
1893 domain->active_directory = False;
1895 result = rpccli_lsa_open_policy(cli, mem_ctx, True,
1896 SEC_RIGHTS_MAXIMUM_ALLOWED,
1899 if (!NT_STATUS_IS_OK(result)) {
1903 result = rpccli_lsa_QueryInfoPolicy(cli, mem_ctx,
1905 LSA_POLICY_INFO_ACCOUNT_DOMAIN,
1908 if (NT_STATUS_IS_OK(result)) {
1910 if (lsa_info->account_domain.name.string) {
1911 fstrcpy(domain->name,
1912 lsa_info->account_domain.name.string);
1915 if (lsa_info->account_domain.sid) {
1916 sid_copy(&domain->sid, lsa_info->account_domain.sid);
1922 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s is %sin native mode.\n",
1923 domain->name, domain->native_mode ? "" : "NOT "));
1925 DEBUG(5,("set_dc_type_and_flags_connect: domain %s is %srunning active directory.\n",
1926 domain->name, domain->active_directory ? "" : "NOT "));
1930 TALLOC_FREE(mem_ctx);
1932 domain->initialized = True;
1935 /**********************************************************************
1936 Set the domain_flags (trust attributes, domain operating modes, etc...
1937 ***********************************************************************/
1939 static void set_dc_type_and_flags( struct winbindd_domain *domain )
1941 /* we always have to contact our primary domain */
1943 if ( domain->primary ) {
1944 DEBUG(10,("set_dc_type_and_flags: setting up flags for "
1945 "primary domain\n"));
1946 set_dc_type_and_flags_connect( domain );
1950 /* Use our DC to get the information if possible */
1952 if ( !set_dc_type_and_flags_trustinfo( domain ) ) {
1953 /* Otherwise, fallback to contacting the
1955 set_dc_type_and_flags_connect( domain );
1963 /**********************************************************************
1964 ***********************************************************************/
1966 static bool cm_get_schannel_dcinfo(struct winbindd_domain *domain,
1967 struct dcinfo **ppdc)
1970 struct rpc_pipe_client *netlogon_pipe;
1972 if (lp_client_schannel() == False) {
1976 result = cm_connect_netlogon(domain, &netlogon_pipe);
1977 if (!NT_STATUS_IS_OK(result)) {
1981 /* Return a pointer to the struct dcinfo from the
1984 if (!domain->conn.netlogon_pipe->dc) {
1988 *ppdc = domain->conn.netlogon_pipe->dc;
1992 NTSTATUS cm_connect_sam(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
1993 struct rpc_pipe_client **cli, POLICY_HND *sam_handle)
1995 struct winbindd_cm_conn *conn;
1996 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1998 struct dcinfo *p_dcinfo;
1999 char *machine_password = NULL;
2000 char *machine_account = NULL;
2001 char *domain_name = NULL;
2003 result = init_dc_connection(domain);
2004 if (!NT_STATUS_IS_OK(result)) {
2008 conn = &domain->conn;
2010 if (conn->samr_pipe != NULL) {
2016 * No SAMR pipe yet. Attempt to get an NTLMSSP SPNEGO authenticated
2017 * sign and sealed pipe using the machine account password by
2018 * preference. If we can't - try schannel, if that fails, try
2022 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
2023 if ((conn->cli->user_name[0] == '\0') ||
2024 (conn->cli->domain[0] == '\0') ||
2025 (conn_pwd[0] == '\0'))
2027 result = get_trust_creds(domain, &machine_password,
2028 &machine_account, NULL);
2029 if (!NT_STATUS_IS_OK(result)) {
2030 DEBUG(10, ("cm_connect_sam: No no user available for "
2031 "domain %s, trying schannel\n", conn->cli->domain));
2034 domain_name = domain->name;
2036 machine_password = SMB_STRDUP(conn_pwd);
2037 machine_account = SMB_STRDUP(conn->cli->user_name);
2038 domain_name = conn->cli->domain;
2041 if (!machine_password || !machine_account) {
2042 result = NT_STATUS_NO_MEMORY;
2046 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2047 authenticated SAMR pipe with sign & seal. */
2048 result = cli_rpc_pipe_open_spnego_ntlmssp(conn->cli,
2049 &ndr_table_samr.syntax_id,
2050 PIPE_AUTH_LEVEL_PRIVACY,
2056 if (!NT_STATUS_IS_OK(result)) {
2057 DEBUG(10,("cm_connect_sam: failed to connect to SAMR "
2058 "pipe for domain %s using NTLMSSP "
2059 "authenticated pipe: user %s\\%s. Error was "
2060 "%s\n", domain->name, domain_name,
2061 machine_account, nt_errstr(result)));
2065 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for "
2066 "domain %s using NTLMSSP authenticated "
2067 "pipe: user %s\\%s\n", domain->name,
2068 domain_name, machine_account));
2070 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2071 conn->samr_pipe->desthost,
2072 SEC_RIGHTS_MAXIMUM_ALLOWED,
2073 &conn->sam_connect_handle);
2074 if (NT_STATUS_IS_OK(result)) {
2077 DEBUG(10,("cm_connect_sam: ntlmssp-sealed rpccli_samr_Connect2 "
2078 "failed for domain %s, error was %s. Trying schannel\n",
2079 domain->name, nt_errstr(result) ));
2080 TALLOC_FREE(conn->samr_pipe);
2084 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2086 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
2087 /* If this call fails - conn->cli can now be NULL ! */
2088 DEBUG(10, ("cm_connect_sam: Could not get schannel auth info "
2089 "for domain %s, trying anon\n", domain->name));
2092 result = cli_rpc_pipe_open_schannel_with_key
2093 (conn->cli, &ndr_table_samr.syntax_id, PIPE_AUTH_LEVEL_PRIVACY,
2094 domain->name, p_dcinfo, &conn->samr_pipe);
2096 if (!NT_STATUS_IS_OK(result)) {
2097 DEBUG(10,("cm_connect_sam: failed to connect to SAMR pipe for "
2098 "domain %s using schannel. Error was %s\n",
2099 domain->name, nt_errstr(result) ));
2102 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for domain %s using "
2103 "schannel.\n", domain->name ));
2105 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2106 conn->samr_pipe->desthost,
2107 SEC_RIGHTS_MAXIMUM_ALLOWED,
2108 &conn->sam_connect_handle);
2109 if (NT_STATUS_IS_OK(result)) {
2112 DEBUG(10,("cm_connect_sam: schannel-sealed rpccli_samr_Connect2 failed "
2113 "for domain %s, error was %s. Trying anonymous\n",
2114 domain->name, nt_errstr(result) ));
2115 TALLOC_FREE(conn->samr_pipe);
2119 /* Finally fall back to anonymous. */
2120 result = cli_rpc_pipe_open_noauth(conn->cli, &ndr_table_samr.syntax_id,
2123 if (!NT_STATUS_IS_OK(result)) {
2127 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2128 conn->samr_pipe->desthost,
2129 SEC_RIGHTS_MAXIMUM_ALLOWED,
2130 &conn->sam_connect_handle);
2131 if (!NT_STATUS_IS_OK(result)) {
2132 DEBUG(10,("cm_connect_sam: rpccli_samr_Connect2 failed "
2133 "for domain %s Error was %s\n",
2134 domain->name, nt_errstr(result) ));
2139 result = rpccli_samr_OpenDomain(conn->samr_pipe,
2141 &conn->sam_connect_handle,
2142 SEC_RIGHTS_MAXIMUM_ALLOWED,
2144 &conn->sam_domain_handle);
2148 if (!NT_STATUS_IS_OK(result)) {
2149 invalidate_cm_connection(conn);
2153 *cli = conn->samr_pipe;
2154 *sam_handle = conn->sam_domain_handle;
2155 SAFE_FREE(machine_password);
2156 SAFE_FREE(machine_account);
2160 NTSTATUS cm_connect_lsa(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2161 struct rpc_pipe_client **cli, POLICY_HND *lsa_policy)
2163 struct winbindd_cm_conn *conn;
2164 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2166 struct dcinfo *p_dcinfo;
2168 result = init_dc_connection(domain);
2169 if (!NT_STATUS_IS_OK(result))
2172 conn = &domain->conn;
2174 if (conn->lsa_pipe != NULL) {
2178 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
2179 if ((conn->cli->user_name[0] == '\0') ||
2180 (conn->cli->domain[0] == '\0') ||
2181 (conn_pwd[0] == '\0')) {
2182 DEBUG(10, ("cm_connect_lsa: No no user available for "
2183 "domain %s, trying schannel\n", conn->cli->domain));
2187 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2188 * authenticated LSA pipe with sign & seal. */
2189 result = cli_rpc_pipe_open_spnego_ntlmssp
2190 (conn->cli, &ndr_table_lsarpc.syntax_id,
2191 PIPE_AUTH_LEVEL_PRIVACY,
2192 conn->cli->domain, conn->cli->user_name, conn_pwd,
2195 if (!NT_STATUS_IS_OK(result)) {
2196 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2197 "domain %s using NTLMSSP authenticated pipe: user "
2198 "%s\\%s. Error was %s. Trying schannel.\n",
2199 domain->name, conn->cli->domain,
2200 conn->cli->user_name, nt_errstr(result)));
2204 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2205 "NTLMSSP authenticated pipe: user %s\\%s\n",
2206 domain->name, conn->cli->domain, conn->cli->user_name ));
2208 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2209 SEC_RIGHTS_MAXIMUM_ALLOWED,
2211 if (NT_STATUS_IS_OK(result)) {
2215 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2218 TALLOC_FREE(conn->lsa_pipe);
2222 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2224 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
2225 /* If this call fails - conn->cli can now be NULL ! */
2226 DEBUG(10, ("cm_connect_lsa: Could not get schannel auth info "
2227 "for domain %s, trying anon\n", domain->name));
2230 result = cli_rpc_pipe_open_schannel_with_key
2231 (conn->cli, &ndr_table_lsarpc.syntax_id,
2232 PIPE_AUTH_LEVEL_PRIVACY,
2233 domain->name, p_dcinfo, &conn->lsa_pipe);
2235 if (!NT_STATUS_IS_OK(result)) {
2236 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2237 "domain %s using schannel. Error was %s\n",
2238 domain->name, nt_errstr(result) ));
2241 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2242 "schannel.\n", domain->name ));
2244 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2245 SEC_RIGHTS_MAXIMUM_ALLOWED,
2247 if (NT_STATUS_IS_OK(result)) {
2251 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2254 TALLOC_FREE(conn->lsa_pipe);
2258 result = cli_rpc_pipe_open_noauth(conn->cli,
2259 &ndr_table_lsarpc.syntax_id,
2261 if (!NT_STATUS_IS_OK(result)) {
2262 result = NT_STATUS_PIPE_NOT_AVAILABLE;
2266 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2267 SEC_RIGHTS_MAXIMUM_ALLOWED,
2270 if (!NT_STATUS_IS_OK(result)) {
2271 invalidate_cm_connection(conn);
2275 *cli = conn->lsa_pipe;
2276 *lsa_policy = conn->lsa_policy;
2280 /****************************************************************************
2281 Open the netlogon pipe to this DC. Use schannel if specified in client conf.
2282 session key stored in conn->netlogon_pipe->dc->sess_key.
2283 ****************************************************************************/
2285 NTSTATUS cm_connect_netlogon(struct winbindd_domain *domain,
2286 struct rpc_pipe_client **cli)
2288 struct winbindd_cm_conn *conn;
2291 uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
2293 uint32 sec_chan_type;
2294 const char *account_name;
2295 struct rpc_pipe_client *netlogon_pipe = NULL;
2299 result = init_dc_connection(domain);
2300 if (!NT_STATUS_IS_OK(result)) {
2304 conn = &domain->conn;
2306 if (conn->netlogon_pipe != NULL) {
2307 *cli = conn->netlogon_pipe;
2308 return NT_STATUS_OK;
2311 result = cli_rpc_pipe_open_noauth(conn->cli,
2312 &ndr_table_netlogon.syntax_id,
2314 if (!NT_STATUS_IS_OK(result)) {
2318 if ((!IS_DC) && (!domain->primary)) {
2319 /* Clear the schannel request bit and drop down */
2320 neg_flags &= ~NETLOGON_NEG_SCHANNEL;
2324 if (lp_client_schannel() != False) {
2325 neg_flags |= NETLOGON_NEG_SCHANNEL;
2328 if (!get_trust_pw_hash(domain->name, mach_pwd, &account_name,
2331 TALLOC_FREE(netlogon_pipe);
2332 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2335 result = rpccli_netlogon_setup_creds(
2337 domain->dcname, /* server name. */
2338 domain->name, /* domain name */
2339 global_myname(), /* client name */
2340 account_name, /* machine account */
2341 mach_pwd, /* machine password */
2342 sec_chan_type, /* from get_trust_pw */
2345 if (!NT_STATUS_IS_OK(result)) {
2346 TALLOC_FREE(netlogon_pipe);
2350 if ((lp_client_schannel() == True) &&
2351 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2352 DEBUG(3, ("Server did not offer schannel\n"));
2353 TALLOC_FREE(netlogon_pipe);
2354 return NT_STATUS_ACCESS_DENIED;
2358 if ((lp_client_schannel() == False) ||
2359 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2361 * NetSamLogonEx only works for schannel
2363 domain->can_do_samlogon_ex = False;
2365 /* We're done - just keep the existing connection to NETLOGON
2367 conn->netlogon_pipe = netlogon_pipe;
2368 *cli = conn->netlogon_pipe;
2369 return NT_STATUS_OK;
2372 /* Using the credentials from the first pipe, open a signed and sealed
2373 second netlogon pipe. The session key is stored in the schannel
2374 part of the new pipe auth struct.
2377 result = cli_rpc_pipe_open_schannel_with_key(
2378 conn->cli, &ndr_table_netlogon.syntax_id,
2379 PIPE_AUTH_LEVEL_PRIVACY, domain->name, netlogon_pipe->dc,
2380 &conn->netlogon_pipe);
2382 /* We can now close the initial netlogon pipe. */
2383 TALLOC_FREE(netlogon_pipe);
2385 if (!NT_STATUS_IS_OK(result)) {
2386 DEBUG(3, ("Could not open schannel'ed NETLOGON pipe. Error "
2387 "was %s\n", nt_errstr(result)));
2389 /* make sure we return something besides OK */
2390 return !NT_STATUS_IS_OK(result) ? result : NT_STATUS_PIPE_NOT_AVAILABLE;
2394 * Try NetSamLogonEx for AD domains
2396 domain->can_do_samlogon_ex = domain->active_directory;
2398 *cli = conn->netlogon_pipe;
2399 return NT_STATUS_OK;