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;
175 pid_t parent_pid = sys_getpid();
180 child_pid = sys_fork();
182 if (child_pid == -1) {
183 DEBUG(0, ("fork_child_dc_connect: Could not fork: %s\n", strerror(errno)));
187 if (child_pid != 0) {
189 messaging_register(winbind_messaging_context(), NULL,
190 MSG_WINBIND_TRY_TO_GO_ONLINE,
191 msg_try_to_go_online);
192 messaging_register(winbind_messaging_context(), NULL,
193 MSG_WINBIND_FAILED_TO_GO_ONLINE,
194 msg_failed_to_go_online);
200 /* Leave messages blocked - we will never process one. */
202 /* tdb needs special fork handling */
203 if (tdb_reopen_all(1) == -1) {
204 DEBUG(0,("tdb_reopen_all failed.\n"));
208 close_conns_after_fork();
210 if (!override_logfile) {
212 if (asprintf(&logfile, "%s/log.winbindd-dc-connect", get_dyn_LOGFILEBASE()) > 0) {
213 lp_set_logfile(logfile);
219 mem_ctx = talloc_init("fork_child_dc_connect");
221 DEBUG(0,("talloc_init failed.\n"));
225 if ((!get_dcs(mem_ctx, domain, &dcs, &num_dcs)) || (num_dcs == 0)) {
226 /* Still offline ? Can't find DC's. */
227 messaging_send_buf(winbind_messaging_context(),
228 pid_to_procid(parent_pid),
229 MSG_WINBIND_FAILED_TO_GO_ONLINE,
230 (uint8 *)domain->name,
231 strlen(domain->name)+1);
235 /* We got a DC. Send a message to our parent to get it to
236 try and do the same. */
238 messaging_send_buf(winbind_messaging_context(),
239 pid_to_procid(parent_pid),
240 MSG_WINBIND_TRY_TO_GO_ONLINE,
241 (uint8 *)domain->name,
242 strlen(domain->name)+1);
246 /****************************************************************
247 Handler triggered if we're offline to try and detect a DC.
248 ****************************************************************/
250 static void check_domain_online_handler(struct event_context *ctx,
251 struct timed_event *te,
252 const struct timeval *now,
255 struct winbindd_domain *domain =
256 (struct winbindd_domain *)private_data;
258 DEBUG(10,("check_domain_online_handler: called for domain "
259 "%s (online = %s)\n", domain->name,
260 domain->online ? "True" : "False" ));
262 TALLOC_FREE(domain->check_online_event);
264 /* Are we still in "startup" mode ? */
266 if (domain->startup && (now->tv_sec > domain->startup_time + 30)) {
267 /* No longer in "startup" mode. */
268 DEBUG(10,("check_domain_online_handler: domain %s no longer in 'startup' mode.\n",
270 domain->startup = False;
273 /* We've been told to stay offline, so stay
276 if (get_global_winbindd_state_offline()) {
277 DEBUG(10,("check_domain_online_handler: domain %s remaining globally offline\n",
282 /* Fork a child to test if it can contact a DC.
283 If it can then send ourselves a message to
284 cause a reconnect. */
286 fork_child_dc_connect(domain);
289 /****************************************************************
290 If we're still offline setup the timeout check.
291 ****************************************************************/
293 static void calc_new_online_timeout_check(struct winbindd_domain *domain)
295 int wbc = lp_winbind_cache_time();
297 if (domain->startup) {
298 domain->check_online_timeout = 10;
299 } else if (domain->check_online_timeout < wbc) {
300 domain->check_online_timeout = wbc;
304 /****************************************************************
305 Set domain offline and also add handler to put us back online
307 ****************************************************************/
309 void set_domain_offline(struct winbindd_domain *domain)
311 DEBUG(10,("set_domain_offline: called for domain %s\n",
314 TALLOC_FREE(domain->check_online_event);
316 if (domain->internal) {
317 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
322 domain->online = False;
324 /* Offline domains are always initialized. They're
325 re-initialized when they go back online. */
327 domain->initialized = True;
329 /* We only add the timeout handler that checks and
330 allows us to go back online when we've not
331 been told to remain offline. */
333 if (get_global_winbindd_state_offline()) {
334 DEBUG(10,("set_domain_offline: domain %s remaining globally offline\n",
339 /* If we're in statup mode, check again in 10 seconds, not in
340 lp_winbind_cache_time() seconds (which is 5 mins by default). */
342 calc_new_online_timeout_check(domain);
344 domain->check_online_event = event_add_timed(winbind_event_context(),
346 timeval_current_ofs(domain->check_online_timeout,0),
347 "check_domain_online_handler",
348 check_domain_online_handler,
351 /* The above *has* to succeed for winbindd to work. */
352 if (!domain->check_online_event) {
353 smb_panic("set_domain_offline: failed to add online handler");
356 DEBUG(10,("set_domain_offline: added event handler for domain %s\n",
359 /* Send an offline message to the idmap child when our
360 primary domain goes offline */
362 if ( domain->primary ) {
363 struct winbindd_child *idmap = idmap_child();
365 if ( idmap->pid != 0 ) {
366 messaging_send_buf(winbind_messaging_context(),
367 pid_to_procid(idmap->pid),
369 (uint8 *)domain->name,
370 strlen(domain->name)+1);
377 /****************************************************************
378 Set domain online - if allowed.
379 ****************************************************************/
381 static void set_domain_online(struct winbindd_domain *domain)
385 DEBUG(10,("set_domain_online: called for domain %s\n",
388 if (domain->internal) {
389 DEBUG(3,("set_domain_online: domain %s is internal - logic error.\n",
394 if (get_global_winbindd_state_offline()) {
395 DEBUG(10,("set_domain_online: domain %s remaining globally offline\n",
400 winbindd_set_locator_kdc_envs(domain);
402 /* If we are waiting to get a krb5 ticket, trigger immediately. */
404 set_event_dispatch_time(winbind_event_context(),
405 "krb5_ticket_gain_handler", now);
407 /* Ok, we're out of any startup mode now... */
408 domain->startup = False;
410 if (domain->online == False) {
411 /* We were offline - now we're online. We default to
412 using the MS-RPC backend if we started offline,
413 and if we're going online for the first time we
414 should really re-initialize the backends and the
415 checks to see if we're talking to an AD or NT domain.
418 domain->initialized = False;
420 /* 'reconnect_methods' is the MS-RPC backend. */
421 if (domain->backend == &reconnect_methods) {
422 domain->backend = NULL;
426 /* Ensure we have no online timeout checks. */
427 domain->check_online_timeout = 0;
428 TALLOC_FREE(domain->check_online_event);
430 /* Ensure we ignore any pending child messages. */
431 messaging_deregister(winbind_messaging_context(),
432 MSG_WINBIND_TRY_TO_GO_ONLINE, NULL);
433 messaging_deregister(winbind_messaging_context(),
434 MSG_WINBIND_FAILED_TO_GO_ONLINE, NULL);
436 domain->online = True;
438 /* Send an online message to the idmap child when our
439 primary domain comes online */
441 if ( domain->primary ) {
442 struct winbindd_child *idmap = idmap_child();
444 if ( idmap->pid != 0 ) {
445 messaging_send_buf(winbind_messaging_context(),
446 pid_to_procid(idmap->pid),
448 (uint8 *)domain->name,
449 strlen(domain->name)+1);
456 /****************************************************************
457 Requested to set a domain online.
458 ****************************************************************/
460 void set_domain_online_request(struct winbindd_domain *domain)
464 DEBUG(10,("set_domain_online_request: called for domain %s\n",
467 if (get_global_winbindd_state_offline()) {
468 DEBUG(10,("set_domain_online_request: domain %s remaining globally offline\n",
473 /* We've been told it's safe to go online and
474 try and connect to a DC. But I don't believe it
475 because network manager seems to lie.
476 Wait at least 5 seconds. Heuristics suck... */
478 if (!domain->check_online_event) {
479 /* If we've come from being globally offline we
480 don't have a check online event handler set.
481 We need to add one now we're trying to go
484 DEBUG(10,("set_domain_online_request: domain %s was globally offline.\n",
487 domain->check_online_event = event_add_timed(winbind_event_context(),
489 timeval_current_ofs(5, 0),
490 "check_domain_online_handler",
491 check_domain_online_handler,
494 /* The above *has* to succeed for winbindd to work. */
495 if (!domain->check_online_event) {
496 smb_panic("set_domain_online_request: failed to add online handler");
502 /* Go into "startup" mode again. */
503 domain->startup_time = tev.tv_sec;
504 domain->startup = True;
508 set_event_dispatch_time(winbind_event_context(), "check_domain_online_handler", tev);
511 /****************************************************************
512 Add -ve connection cache entries for domain and realm.
513 ****************************************************************/
515 void winbind_add_failed_connection_entry(const struct winbindd_domain *domain,
519 add_failed_connection_entry(domain->name, server, result);
520 /* If this was the saf name for the last thing we talked to,
522 saf_delete(domain->name);
523 if (*domain->alt_name) {
524 add_failed_connection_entry(domain->alt_name, server, result);
525 saf_delete(domain->alt_name);
527 winbindd_unset_locator_kdc_env(domain);
530 /* Choose between anonymous or authenticated connections. We need to use
531 an authenticated connection if DCs have the RestrictAnonymous registry
532 entry set > 0, or the "Additional restrictions for anonymous
533 connections" set in the win2k Local Security Policy.
535 Caller to free() result in domain, username, password
538 static void cm_get_ipc_userpass(char **username, char **domain, char **password)
540 *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
541 *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
542 *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
544 if (*username && **username) {
546 if (!*domain || !**domain)
547 *domain = smb_xstrdup(lp_workgroup());
549 if (!*password || !**password)
550 *password = smb_xstrdup("");
552 DEBUG(3, ("cm_get_ipc_userpass: Retrieved auth-user from secrets.tdb [%s\\%s]\n",
553 *domain, *username));
556 DEBUG(3, ("cm_get_ipc_userpass: No auth-user defined\n"));
557 *username = smb_xstrdup("");
558 *domain = smb_xstrdup("");
559 *password = smb_xstrdup("");
563 static bool get_dc_name_via_netlogon(struct winbindd_domain *domain,
565 struct sockaddr_storage *dc_ss)
567 struct winbindd_domain *our_domain = NULL;
568 struct rpc_pipe_client *netlogon_pipe = NULL;
572 unsigned int orig_timeout;
573 const char *tmp = NULL;
576 /* Hmmmm. We can only open one connection to the NETLOGON pipe at the
583 if (domain->primary) {
587 our_domain = find_our_domain();
589 if ((mem_ctx = talloc_init("get_dc_name_via_netlogon")) == NULL) {
593 result = cm_connect_netlogon(our_domain, &netlogon_pipe);
594 if (!NT_STATUS_IS_OK(result)) {
595 talloc_destroy(mem_ctx);
599 /* This call can take a long time - allow the server to time out.
600 35 seconds should do it. */
602 orig_timeout = cli_set_timeout(netlogon_pipe->cli, 35000);
604 if (our_domain->active_directory) {
605 struct netr_DsRGetDCNameInfo *domain_info = NULL;
607 result = rpccli_netr_DsRGetDCName(netlogon_pipe,
616 if (W_ERROR_IS_OK(werr)) {
618 mem_ctx, domain_info->dc_unc);
620 DEBUG(0, ("talloc_strdup failed\n"));
621 talloc_destroy(mem_ctx);
624 if (strlen(domain->alt_name) == 0) {
625 fstrcpy(domain->alt_name,
626 domain_info->domain_name);
628 if (strlen(domain->forest_name) == 0) {
629 fstrcpy(domain->forest_name,
630 domain_info->forest_name);
634 result = rpccli_netr_GetAnyDCName(netlogon_pipe, mem_ctx,
641 /* And restore our original timeout. */
642 cli_set_timeout(netlogon_pipe->cli, orig_timeout);
644 if (!NT_STATUS_IS_OK(result)) {
645 DEBUG(10,("rpccli_netr_GetAnyDCName failed: %s\n",
647 talloc_destroy(mem_ctx);
651 if (!W_ERROR_IS_OK(werr)) {
652 DEBUG(10,("rpccli_netr_GetAnyDCName failed: %s\n",
654 talloc_destroy(mem_ctx);
658 /* rpccli_netr_GetAnyDCName gives us a name with \\ */
669 talloc_destroy(mem_ctx);
671 DEBUG(10,("rpccli_netr_GetAnyDCName returned %s\n", dcname));
673 if (!resolve_name(dcname, dc_ss, 0x20)) {
681 * Helper function to assemble trust password and account name
683 static NTSTATUS get_trust_creds(const struct winbindd_domain *domain,
684 char **machine_password,
685 char **machine_account,
686 char **machine_krb5_principal)
688 const char *account_name;
689 const char *name = NULL;
691 /* If we are a DC and this is not our own domain */
696 struct winbindd_domain *our_domain = find_our_domain();
699 return NT_STATUS_INVALID_SERVER_STATE;
701 name = our_domain->name;
704 if (!get_trust_pw_clear(name, machine_password,
705 &account_name, NULL))
707 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
710 if ((machine_account != NULL) &&
711 (asprintf(machine_account, "%s$", account_name) == -1))
713 return NT_STATUS_NO_MEMORY;
716 /* this is at least correct when domain is our domain,
717 * which is the only case, when this is currently used: */
718 if (machine_krb5_principal != NULL)
720 if (asprintf(machine_krb5_principal, "%s$@%s",
721 account_name, domain->alt_name) == -1)
723 return NT_STATUS_NO_MEMORY;
726 strupper_m(*machine_krb5_principal);
732 /************************************************************************
733 Given a fd with a just-connected TCP connection to a DC, open a connection
735 ************************************************************************/
737 static NTSTATUS cm_prepare_connection(const struct winbindd_domain *domain,
739 const char *controller,
740 struct cli_state **cli,
743 char *machine_password = NULL;
744 char *machine_krb5_principal = NULL;
745 char *machine_account = NULL;
746 char *ipc_username = NULL;
747 char *ipc_domain = NULL;
748 char *ipc_password = NULL;
752 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
754 struct sockaddr peeraddr;
755 socklen_t peeraddr_len;
757 struct sockaddr_in *peeraddr_in = (struct sockaddr_in *)&peeraddr;
759 DEBUG(10,("cm_prepare_connection: connecting to DC %s for domain %s\n",
760 controller, domain->name ));
764 got_mutex = secrets_named_mutex(controller,
765 WINBIND_SERVER_MUTEX_WAIT_TIME);
768 DEBUG(0,("cm_prepare_connection: mutex grab failed for %s\n",
770 result = NT_STATUS_POSSIBLE_DEADLOCK;
774 if ((*cli = cli_initialise()) == NULL) {
775 DEBUG(1, ("Could not cli_initialize\n"));
776 result = NT_STATUS_NO_MEMORY;
780 (*cli)->timeout = 10000; /* 10 seconds */
782 fstrcpy((*cli)->desthost, controller);
783 (*cli)->use_kerberos = True;
785 peeraddr_len = sizeof(peeraddr);
787 if ((getpeername((*cli)->fd, &peeraddr, &peeraddr_len) != 0) ||
788 (peeraddr_len != sizeof(struct sockaddr_in)) ||
789 (peeraddr_in->sin_family != PF_INET))
791 DEBUG(0,("cm_prepare_connection: %s\n", strerror(errno)));
792 result = NT_STATUS_UNSUCCESSFUL;
796 if (ntohs(peeraddr_in->sin_port) == 139) {
797 struct nmb_name calling;
798 struct nmb_name called;
800 make_nmb_name(&calling, global_myname(), 0x0);
801 make_nmb_name(&called, "*SMBSERVER", 0x20);
803 if (!cli_session_request(*cli, &calling, &called)) {
804 DEBUG(8, ("cli_session_request failed for %s\n",
806 result = NT_STATUS_UNSUCCESSFUL;
811 cli_setup_signing_state(*cli, Undefined);
813 if (!cli_negprot(*cli)) {
814 DEBUG(1, ("cli_negprot failed\n"));
815 result = NT_STATUS_UNSUCCESSFUL;
819 if (!is_trusted_domain_situation(domain->name) &&
820 (*cli)->protocol >= PROTOCOL_NT1 &&
821 (*cli)->capabilities & CAP_EXTENDED_SECURITY)
823 ADS_STATUS ads_status;
825 result = get_trust_creds(domain, &machine_password,
827 &machine_krb5_principal);
828 if (!NT_STATUS_IS_OK(result)) {
832 if (lp_security() == SEC_ADS) {
834 /* Try a krb5 session */
836 (*cli)->use_kerberos = True;
837 DEBUG(5, ("connecting to %s from %s with kerberos principal "
838 "[%s]\n", controller, global_myname(),
839 machine_krb5_principal));
841 winbindd_set_locator_kdc_envs(domain);
843 ads_status = cli_session_setup_spnego(*cli,
844 machine_krb5_principal,
848 if (!ADS_ERR_OK(ads_status)) {
849 DEBUG(4,("failed kerberos session setup with %s\n",
850 ads_errstr(ads_status)));
853 result = ads_ntstatus(ads_status);
854 if (NT_STATUS_IS_OK(result)) {
855 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
856 cli_init_creds(*cli, machine_account, domain->name, machine_password);
857 goto session_setup_done;
861 /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the machine account. */
862 (*cli)->use_kerberos = False;
864 DEBUG(5, ("connecting to %s from %s with username "
865 "[%s]\\[%s]\n", controller, global_myname(),
866 domain->name, machine_account));
868 ads_status = cli_session_setup_spnego(*cli,
872 if (!ADS_ERR_OK(ads_status)) {
873 DEBUG(4, ("authenticated session setup failed with %s\n",
874 ads_errstr(ads_status)));
877 result = ads_ntstatus(ads_status);
878 if (NT_STATUS_IS_OK(result)) {
879 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
880 cli_init_creds(*cli, machine_account, domain->name, machine_password);
881 goto session_setup_done;
885 /* Fall back to non-kerberos session setup with auth_user */
887 (*cli)->use_kerberos = False;
889 cm_get_ipc_userpass(&ipc_username, &ipc_domain, &ipc_password);
891 if ((((*cli)->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) != 0) &&
892 (strlen(ipc_username) > 0)) {
894 /* Only try authenticated if we have a username */
896 DEBUG(5, ("connecting to %s from %s with username "
897 "[%s]\\[%s]\n", controller, global_myname(),
898 ipc_domain, ipc_username));
900 if (NT_STATUS_IS_OK(cli_session_setup(
902 ipc_password, strlen(ipc_password)+1,
903 ipc_password, strlen(ipc_password)+1,
905 /* Successful logon with given username. */
906 cli_init_creds(*cli, ipc_username, ipc_domain, ipc_password);
907 goto session_setup_done;
909 DEBUG(4, ("authenticated session setup with user %s\\%s failed.\n",
910 ipc_domain, ipc_username ));
914 /* Fall back to anonymous connection, this might fail later */
916 if (NT_STATUS_IS_OK(cli_session_setup(*cli, "", NULL, 0,
918 DEBUG(5, ("Connected anonymously\n"));
919 cli_init_creds(*cli, "", "", "");
920 goto session_setup_done;
923 result = cli_nt_error(*cli);
925 if (NT_STATUS_IS_OK(result))
926 result = NT_STATUS_UNSUCCESSFUL;
928 /* We can't session setup */
934 /* cache the server name for later connections */
936 saf_store( domain->name, (*cli)->desthost );
937 if (domain->alt_name && (*cli)->use_kerberos) {
938 saf_store( domain->alt_name, (*cli)->desthost );
941 winbindd_set_locator_kdc_envs(domain);
943 if (!cli_send_tconX(*cli, "IPC$", "IPC", "", 0)) {
945 result = cli_nt_error(*cli);
947 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(result)));
949 if (NT_STATUS_IS_OK(result))
950 result = NT_STATUS_UNSUCCESSFUL;
955 secrets_named_mutex_release(controller);
959 /* set the domain if empty; needed for schannel connections */
960 if ( !*(*cli)->domain ) {
961 fstrcpy( (*cli)->domain, domain->name );
964 result = NT_STATUS_OK;
968 secrets_named_mutex_release(controller);
971 SAFE_FREE(machine_account);
972 SAFE_FREE(machine_password);
973 SAFE_FREE(machine_krb5_principal);
974 SAFE_FREE(ipc_username);
975 SAFE_FREE(ipc_domain);
976 SAFE_FREE(ipc_password);
978 if (!NT_STATUS_IS_OK(result)) {
979 winbind_add_failed_connection_entry(domain, controller, result);
980 if ((*cli) != NULL) {
989 static bool add_one_dc_unique(TALLOC_CTX *mem_ctx, const char *domain_name,
990 const char *dcname, struct sockaddr_storage *pss,
991 struct dc_name_ip **dcs, int *num)
993 if (!NT_STATUS_IS_OK(check_negative_conn_cache(domain_name, dcname))) {
994 DEBUG(10, ("DC %s was in the negative conn cache\n", dcname));
998 *dcs = TALLOC_REALLOC_ARRAY(mem_ctx, *dcs, struct dc_name_ip, (*num)+1);
1003 fstrcpy((*dcs)[*num].name, dcname);
1004 (*dcs)[*num].ss = *pss;
1009 static bool add_sockaddr_to_array(TALLOC_CTX *mem_ctx,
1010 struct sockaddr_storage *pss, uint16 port,
1011 struct sockaddr_storage **addrs, int *num)
1013 *addrs = TALLOC_REALLOC_ARRAY(mem_ctx, *addrs, struct sockaddr_storage, (*num)+1);
1015 if (*addrs == NULL) {
1020 (*addrs)[*num] = *pss;
1021 set_sockaddr_port(&(*addrs)[*num], port);
1027 static void mailslot_name(struct in_addr dc_ip, fstring name)
1029 fstr_sprintf(name, "\\MAILSLOT\\NET\\GETDC%X", dc_ip.s_addr);
1032 static bool send_getdc_request(struct sockaddr_storage *dc_ss,
1033 const char *domain_name,
1037 struct in_addr dc_ip;
1039 fstring my_acct_name;
1040 fstring my_mailslot;
1043 if (dc_ss->ss_family != AF_INET) {
1047 dc_ip = ((struct sockaddr_in *)dc_ss)->sin_addr;
1048 mailslot_name(dc_ip, my_mailslot);
1050 memset(outbuf, '\0', sizeof(outbuf));
1054 SCVAL(p, 0, SAMLOGON);
1057 SCVAL(p, 0, 0); /* Count pointer ... */
1060 SIVAL(p, 0, 0); /* The sender's token ... */
1063 p += dos_PutUniCode(p, global_myname(),
1064 sizeof(outbuf) - PTR_DIFF(p, outbuf), True);
1065 fstr_sprintf(my_acct_name, "%s$", global_myname());
1066 p += dos_PutUniCode(p, my_acct_name,
1067 sizeof(outbuf) - PTR_DIFF(p, outbuf), True);
1069 if (strlen(my_mailslot)+1 > sizeof(outbuf) - PTR_DIFF(p, outbuf)) {
1073 memcpy(p, my_mailslot, strlen(my_mailslot)+1);
1074 p += strlen(my_mailslot)+1;
1076 if (sizeof(outbuf) - PTR_DIFF(p, outbuf) < 8) {
1083 sid_size = ndr_size_dom_sid(sid, 0);
1085 SIVAL(p, 0, sid_size);
1088 p = ALIGN4(p, outbuf);
1089 if (PTR_DIFF(p, outbuf) > sizeof(outbuf)) {
1093 if (sid_size + 8 > sizeof(outbuf) - PTR_DIFF(p, outbuf)) {
1096 sid_linearize(p, sizeof(outbuf) - PTR_DIFF(p, outbuf), sid);
1101 SSVAL(p, 4, 0xffff);
1102 SSVAL(p, 6, 0xffff);
1105 return cli_send_mailslot(winbind_messaging_context(),
1106 False, "\\MAILSLOT\\NET\\NTLOGON", 0,
1107 outbuf, PTR_DIFF(p, outbuf),
1108 global_myname(), 0, domain_name, 0x1c,
1112 static bool receive_getdc_response(struct sockaddr_storage *dc_ss,
1113 const char *domain_name,
1116 struct packet_struct *packet;
1117 fstring my_mailslot;
1119 fstring dcname, user, domain;
1121 struct in_addr dc_ip;
1123 if (dc_ss->ss_family != AF_INET) {
1126 dc_ip = ((struct sockaddr_in *)dc_ss)->sin_addr;
1127 mailslot_name(dc_ip, my_mailslot);
1129 packet = receive_unexpected(DGRAM_PACKET, 0, my_mailslot);
1131 if (packet == NULL) {
1132 DEBUG(5, ("Did not receive packet for %s\n", my_mailslot));
1136 DEBUG(5, ("Received packet for %s\n", my_mailslot));
1138 buf = packet->packet.dgram.data;
1139 len = packet->packet.dgram.datasize;
1142 /* 70 is a completely arbitrary value to make sure
1143 the SVAL below does not read uninitialized memory */
1144 DEBUG(3, ("GetDC got short response\n"));
1148 /* This should be (buf-4)+SVAL(buf-4, smb_vwv12)... */
1149 p = buf+SVAL(buf, smb_vwv10);
1151 if (CVAL(p,0) != SAMLOGON_R) {
1152 DEBUG(8, ("GetDC got invalid response type %d\n", CVAL(p, 0)));
1157 pull_ucs2(buf, dcname, p, sizeof(dcname), PTR_DIFF(buf+len, p),
1158 STR_TERMINATE|STR_NOALIGN);
1159 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
1160 pull_ucs2(buf, user, p, sizeof(dcname), PTR_DIFF(buf+len, p),
1161 STR_TERMINATE|STR_NOALIGN);
1162 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
1163 pull_ucs2(buf, domain, p, sizeof(dcname), PTR_DIFF(buf+len, p),
1164 STR_TERMINATE|STR_NOALIGN);
1165 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
1167 if (!strequal(domain, domain_name)) {
1168 DEBUG(3, ("GetDC: Expected domain %s, got %s\n",
1169 domain_name, domain));
1174 if (*p == '\\') p += 1;
1175 if (*p == '\\') p += 1;
1177 fstrcpy(dc_name, p);
1179 DEBUG(10, ("GetDC gave name %s for domain %s\n",
1185 /*******************************************************************
1186 convert an ip to a name
1187 *******************************************************************/
1189 static bool dcip_to_name(const struct winbindd_domain *domain,
1190 struct sockaddr_storage *pss,
1193 struct ip_service ip_list;
1199 /* For active directory servers, try to get the ldap server name.
1200 None of these failures should be considered critical for now */
1202 if (lp_security() == SEC_ADS) {
1204 char addr[INET6_ADDRSTRLEN];
1206 print_sockaddr(addr, sizeof(addr), pss);
1208 ads = ads_init(domain->alt_name, domain->name, NULL);
1209 ads->auth.flags |= ADS_AUTH_NO_BIND;
1211 if (ads_try_connect(ads, addr)) {
1212 /* We got a cldap packet. */
1213 fstrcpy(name, ads->config.ldap_server_name);
1214 namecache_store(name, 0x20, 1, &ip_list);
1216 DEBUG(10,("dcip_to_name: flags = 0x%x\n", (unsigned int)ads->config.flags));
1218 if (domain->primary && (ads->config.flags & ADS_KDC)) {
1219 if (ads_closest_dc(ads)) {
1220 char *sitename = sitename_fetch(ads->config.realm);
1222 /* We're going to use this KDC for this realm/domain.
1223 If we are using sites, then force the krb5 libs
1226 create_local_private_krb5_conf_for_domain(domain->alt_name,
1231 SAFE_FREE(sitename);
1233 /* use an off site KDC */
1234 create_local_private_krb5_conf_for_domain(domain->alt_name,
1239 winbindd_set_locator_kdc_envs(domain);
1241 /* Ensure we contact this DC also. */
1242 saf_store( domain->name, name);
1243 saf_store( domain->alt_name, name);
1246 ads_destroy( &ads );
1250 ads_destroy( &ads );
1254 /* try GETDC requests next */
1256 if (send_getdc_request(pss, domain->name, &domain->sid)) {
1259 for (i=0; i<5; i++) {
1260 if (receive_getdc_response(pss, domain->name, name)) {
1261 namecache_store(name, 0x20, 1, &ip_list);
1268 /* try node status request */
1270 if ( name_status_find(domain->name, 0x1c, 0x20, pss, name) ) {
1271 namecache_store(name, 0x20, 1, &ip_list);
1277 /*******************************************************************
1278 Retreive a list of IP address for domain controllers. Fill in
1279 the dcs[] with results.
1280 *******************************************************************/
1282 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
1283 struct dc_name_ip **dcs, int *num_dcs)
1286 struct sockaddr_storage ss;
1287 struct ip_service *ip_list = NULL;
1288 int iplist_size = 0;
1291 enum security_types sec = (enum security_types)lp_security();
1293 is_our_domain = strequal(domain->name, lp_workgroup());
1296 && get_dc_name_via_netlogon(domain, dcname, &ss)
1297 && add_one_dc_unique(mem_ctx, domain->name, dcname, &ss, dcs, num_dcs) )
1299 char addr[INET6_ADDRSTRLEN];
1300 print_sockaddr(addr, sizeof(addr), &ss);
1301 DEBUG(10, ("Retrieved DC %s at %s via netlogon\n",
1306 if (sec == SEC_ADS) {
1307 char *sitename = NULL;
1309 /* We need to make sure we know the local site before
1310 doing any DNS queries, as this will restrict the
1311 get_sorted_dc_list() call below to only fetching
1312 DNS records for the correct site. */
1314 /* Find any DC to get the site record.
1315 We deliberately don't care about the
1318 get_dc_name(domain->name, domain->alt_name, dcname, &ss);
1320 sitename = sitename_fetch(domain->alt_name);
1323 /* Do the site-specific AD dns lookup first. */
1324 get_sorted_dc_list(domain->alt_name, sitename, &ip_list, &iplist_size, True);
1326 for ( i=0; i<iplist_size; i++ ) {
1327 char addr[INET6_ADDRSTRLEN];
1328 print_sockaddr(addr, sizeof(addr),
1330 add_one_dc_unique(mem_ctx,
1339 SAFE_FREE(sitename);
1343 /* Now we add DCs from the main AD dns lookup. */
1344 get_sorted_dc_list(domain->alt_name, NULL, &ip_list, &iplist_size, True);
1346 for ( i=0; i<iplist_size; i++ ) {
1347 char addr[INET6_ADDRSTRLEN];
1348 print_sockaddr(addr, sizeof(addr),
1350 add_one_dc_unique(mem_ctx,
1359 /* try standard netbios queries if no ADS */
1361 if (iplist_size==0) {
1362 get_sorted_dc_list(domain->name, NULL, &ip_list, &iplist_size, False);
1365 /* FIXME!! this is where we should re-insert the GETDC requests --jerry */
1367 /* now add to the dc array. We'll wait until the last minute
1368 to look up the name of the DC. But we fill in the char* for
1369 the ip now in to make the failed connection cache work */
1371 for ( i=0; i<iplist_size; i++ ) {
1372 char addr[INET6_ADDRSTRLEN];
1373 print_sockaddr(addr, sizeof(addr),
1375 add_one_dc_unique(mem_ctx, domain->name, addr,
1376 &ip_list[i].ss, dcs, num_dcs);
1379 SAFE_FREE( ip_list );
1384 static bool find_new_dc(TALLOC_CTX *mem_ctx,
1385 struct winbindd_domain *domain,
1386 fstring dcname, struct sockaddr_storage *pss, int *fd)
1388 struct dc_name_ip *dcs = NULL;
1391 const char **dcnames = NULL;
1392 int num_dcnames = 0;
1394 struct sockaddr_storage *addrs = NULL;
1400 if (!get_dcs(mem_ctx, domain, &dcs, &num_dcs) || (num_dcs == 0))
1403 for (i=0; i<num_dcs; i++) {
1405 if (!add_string_to_array(mem_ctx, dcs[i].name,
1406 &dcnames, &num_dcnames)) {
1409 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, 445,
1410 &addrs, &num_addrs)) {
1414 if (!add_string_to_array(mem_ctx, dcs[i].name,
1415 &dcnames, &num_dcnames)) {
1418 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, 139,
1419 &addrs, &num_addrs)) {
1424 if ((num_dcnames == 0) || (num_dcnames != num_addrs))
1427 if ((addrs == NULL) || (dcnames == NULL))
1430 /* 5 second timeout. */
1431 if (!open_any_socket_out(addrs, num_addrs, 5000, &fd_index, fd) ) {
1432 for (i=0; i<num_dcs; i++) {
1433 char ab[INET6_ADDRSTRLEN];
1434 print_sockaddr(ab, sizeof(ab), &dcs[i].ss);
1435 DEBUG(10, ("find_new_dc: open_any_socket_out failed for "
1436 "domain %s address %s. Error was %s\n",
1437 domain->name, ab, strerror(errno) ));
1438 winbind_add_failed_connection_entry(domain,
1439 dcs[i].name, NT_STATUS_UNSUCCESSFUL);
1444 *pss = addrs[fd_index];
1446 if (*dcnames[fd_index] != '\0' && !is_ipaddress(dcnames[fd_index])) {
1447 /* Ok, we've got a name for the DC */
1448 fstrcpy(dcname, dcnames[fd_index]);
1452 /* Try to figure out the name */
1453 if (dcip_to_name(domain, pss, dcname)) {
1457 /* We can not continue without the DC's name */
1458 winbind_add_failed_connection_entry(domain, dcs[fd_index].name,
1459 NT_STATUS_UNSUCCESSFUL);
1463 static NTSTATUS cm_open_connection(struct winbindd_domain *domain,
1464 struct winbindd_cm_conn *new_conn)
1466 TALLOC_CTX *mem_ctx;
1468 char *saf_servername = saf_fetch( domain->name );
1471 if ((mem_ctx = talloc_init("cm_open_connection")) == NULL) {
1472 SAFE_FREE(saf_servername);
1473 set_domain_offline(domain);
1474 return NT_STATUS_NO_MEMORY;
1477 /* we have to check the server affinity cache here since
1478 later we selecte a DC based on response time and not preference */
1480 /* Check the negative connection cache
1481 before talking to it. It going down may have
1482 triggered the reconnection. */
1484 if ( saf_servername && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, saf_servername))) {
1486 DEBUG(10,("cm_open_connection: saf_servername is '%s' for domain %s\n",
1487 saf_servername, domain->name ));
1489 /* convert an ip address to a name */
1490 if (is_ipaddress( saf_servername ) ) {
1492 struct sockaddr_storage ss;
1494 if (!interpret_string_addr(&ss, saf_servername,
1496 return NT_STATUS_UNSUCCESSFUL;
1498 if (dcip_to_name( domain, &ss, saf_name )) {
1499 fstrcpy( domain->dcname, saf_name );
1501 winbind_add_failed_connection_entry(
1502 domain, saf_servername,
1503 NT_STATUS_UNSUCCESSFUL);
1506 fstrcpy( domain->dcname, saf_servername );
1509 SAFE_FREE( saf_servername );
1512 for (retries = 0; retries < 3; retries++) {
1516 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1518 DEBUG(10,("cm_open_connection: dcname is '%s' for domain %s\n",
1519 domain->dcname, domain->name ));
1522 && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, domain->dcname))
1523 && (resolve_name(domain->dcname, &domain->dcaddr, 0x20)))
1525 struct sockaddr_storage *addrs = NULL;
1529 if (!add_sockaddr_to_array(mem_ctx, &domain->dcaddr, 445, &addrs, &num_addrs)) {
1530 set_domain_offline(domain);
1531 talloc_destroy(mem_ctx);
1532 return NT_STATUS_NO_MEMORY;
1534 if (!add_sockaddr_to_array(mem_ctx, &domain->dcaddr, 139, &addrs, &num_addrs)) {
1535 set_domain_offline(domain);
1536 talloc_destroy(mem_ctx);
1537 return NT_STATUS_NO_MEMORY;
1540 /* 5 second timeout. */
1541 if (!open_any_socket_out(addrs, num_addrs, 5000, &dummy, &fd)) {
1547 && !find_new_dc(mem_ctx, domain, domain->dcname, &domain->dcaddr, &fd))
1549 /* This is the one place where we will
1550 set the global winbindd offline state
1551 to true, if a "WINBINDD_OFFLINE" entry
1552 is found in the winbindd cache. */
1553 set_global_winbindd_state_offline();
1557 new_conn->cli = NULL;
1559 result = cm_prepare_connection(domain, fd, domain->dcname,
1560 &new_conn->cli, &retry);
1566 if (NT_STATUS_IS_OK(result)) {
1568 winbindd_set_locator_kdc_envs(domain);
1570 if (domain->online == False) {
1571 /* We're changing state from offline to online. */
1572 set_global_winbindd_state_online();
1574 set_domain_online(domain);
1576 /* Ensure we setup the retry handler. */
1577 set_domain_offline(domain);
1580 talloc_destroy(mem_ctx);
1584 /* Close down all open pipes on a connection. */
1586 void invalidate_cm_connection(struct winbindd_cm_conn *conn)
1588 /* We're closing down a possibly dead
1589 connection. Don't have impossibly long (10s) timeouts. */
1592 cli_set_timeout(conn->cli, 1000); /* 1 second. */
1595 if (conn->samr_pipe != NULL) {
1596 if (!cli_rpc_pipe_close(conn->samr_pipe)) {
1597 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1599 cli_set_timeout(conn->cli, 500);
1602 conn->samr_pipe = NULL;
1605 if (conn->lsa_pipe != NULL) {
1606 if (!cli_rpc_pipe_close(conn->lsa_pipe)) {
1607 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1609 cli_set_timeout(conn->cli, 500);
1612 conn->lsa_pipe = NULL;
1615 if (conn->netlogon_pipe != NULL) {
1616 if (!cli_rpc_pipe_close(conn->netlogon_pipe)) {
1617 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1619 cli_set_timeout(conn->cli, 500);
1622 conn->netlogon_pipe = NULL;
1626 cli_shutdown(conn->cli);
1632 void close_conns_after_fork(void)
1634 struct winbindd_domain *domain;
1636 for (domain = domain_list(); domain; domain = domain->next) {
1637 if (domain->conn.cli == NULL)
1640 if (domain->conn.cli->fd == -1)
1643 close(domain->conn.cli->fd);
1644 domain->conn.cli->fd = -1;
1648 static bool connection_ok(struct winbindd_domain *domain)
1650 if (domain->conn.cli == NULL) {
1651 DEBUG(8, ("connection_ok: Connection to %s for domain %s has NULL "
1652 "cli!\n", domain->dcname, domain->name));
1656 if (!domain->conn.cli->initialised) {
1657 DEBUG(3, ("connection_ok: Connection to %s for domain %s was never "
1658 "initialised!\n", domain->dcname, domain->name));
1662 if (domain->conn.cli->fd == -1) {
1663 DEBUG(3, ("connection_ok: Connection to %s for domain %s has died or was "
1664 "never started (fd == -1)\n",
1665 domain->dcname, domain->name));
1669 if (domain->online == False) {
1670 DEBUG(3, ("connection_ok: Domain %s is offline\n", domain->name));
1677 /* Initialize a new connection up to the RPC BIND.
1678 Bypass online status check so always does network calls. */
1680 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain)
1684 /* Internal connections never use the network. */
1685 if (domain->internal) {
1686 domain->initialized = True;
1687 return NT_STATUS_OK;
1690 if (connection_ok(domain)) {
1691 if (!domain->initialized) {
1692 set_dc_type_and_flags(domain);
1694 return NT_STATUS_OK;
1697 invalidate_cm_connection(&domain->conn);
1699 result = cm_open_connection(domain, &domain->conn);
1701 if (NT_STATUS_IS_OK(result) && !domain->initialized) {
1702 set_dc_type_and_flags(domain);
1708 NTSTATUS init_dc_connection(struct winbindd_domain *domain)
1710 if (domain->initialized && !domain->online) {
1711 /* We check for online status elsewhere. */
1712 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1715 return init_dc_connection_network(domain);
1718 /******************************************************************************
1719 Set the trust flags (direction and forest location) for a domain
1720 ******************************************************************************/
1722 static bool set_dc_type_and_flags_trustinfo( struct winbindd_domain *domain )
1724 struct winbindd_domain *our_domain;
1725 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1726 struct netr_DomainTrustList trusts;
1728 uint32 flags = (NETR_TRUST_FLAG_IN_FOREST |
1729 NETR_TRUST_FLAG_OUTBOUND |
1730 NETR_TRUST_FLAG_INBOUND);
1731 struct rpc_pipe_client *cli;
1732 TALLOC_CTX *mem_ctx = NULL;
1734 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s\n", domain->name ));
1736 /* Our primary domain doesn't need to worry about trust flags.
1737 Force it to go through the network setup */
1738 if ( domain->primary ) {
1742 our_domain = find_our_domain();
1744 if ( !connection_ok(our_domain) ) {
1745 DEBUG(3,("set_dc_type_and_flags_trustinfo: No connection to our domain!\n"));
1749 /* This won't work unless our domain is AD */
1751 if ( !our_domain->active_directory ) {
1755 /* Use DsEnumerateDomainTrusts to get us the trust direction
1758 result = cm_connect_netlogon(our_domain, &cli);
1760 if (!NT_STATUS_IS_OK(result)) {
1761 DEBUG(5, ("set_dc_type_and_flags_trustinfo: Could not open "
1762 "a connection to %s for PIPE_NETLOGON (%s)\n",
1763 domain->name, nt_errstr(result)));
1767 if ( (mem_ctx = talloc_init("set_dc_type_and_flags_trustinfo")) == NULL ) {
1768 DEBUG(0,("set_dc_type_and_flags_trustinfo: talloc_init() failed!\n"));
1772 result = rpccli_netr_DsrEnumerateDomainTrusts(cli, mem_ctx,
1777 if (!NT_STATUS_IS_OK(result)) {
1778 DEBUG(0,("set_dc_type_and_flags_trustinfo: "
1779 "failed to query trusted domain list: %s\n",
1780 nt_errstr(result)));
1781 talloc_destroy(mem_ctx);
1785 /* Now find the domain name and get the flags */
1787 for ( i=0; i<trusts.count; i++ ) {
1788 if ( strequal( domain->name, trusts.array[i].netbios_name) ) {
1789 domain->domain_flags = trusts.array[i].trust_flags;
1790 domain->domain_type = trusts.array[i].trust_type;
1791 domain->domain_trust_attribs = trusts.array[i].trust_attributes;
1793 if ( domain->domain_type == NETR_TRUST_TYPE_UPLEVEL )
1794 domain->active_directory = True;
1796 /* This flag is only set if the domain is *our*
1797 primary domain and the primary domain is in
1800 domain->native_mode = (domain->domain_flags & NETR_TRUST_FLAG_NATIVE);
1802 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s is %sin "
1803 "native mode.\n", domain->name,
1804 domain->native_mode ? "" : "NOT "));
1806 DEBUG(5,("set_dc_type_and_flags_trustinfo: domain %s is %s"
1807 "running active directory.\n", domain->name,
1808 domain->active_directory ? "" : "NOT "));
1811 domain->initialized = True;
1813 if ( !winbindd_can_contact_domain( domain) )
1814 domain->internal = True;
1820 talloc_destroy( mem_ctx );
1822 return domain->initialized;
1825 /******************************************************************************
1826 We can 'sense' certain things about the DC by it's replies to certain
1829 This tells us if this particular remote server is Active Directory, and if it
1831 ******************************************************************************/
1833 static void set_dc_type_and_flags_connect( struct winbindd_domain *domain )
1837 TALLOC_CTX *mem_ctx = NULL;
1838 struct rpc_pipe_client *cli;
1840 union dssetup_DsRoleInfo info;
1841 union lsa_PolicyInformation *lsa_info = NULL;
1843 if (!connection_ok(domain)) {
1847 mem_ctx = talloc_init("set_dc_type_and_flags on domain %s\n",
1850 DEBUG(1, ("set_dc_type_and_flags_connect: talloc_init() failed\n"));
1854 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s\n", domain->name ));
1856 cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_DSSETUP,
1860 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1861 "PI_DSSETUP on domain %s: (%s)\n",
1862 domain->name, nt_errstr(result)));
1864 /* if this is just a non-AD domain we need to continue
1865 * identifying so that we can in the end return with
1866 * domain->initialized = True - gd */
1871 result = rpccli_dssetup_DsRoleGetPrimaryDomainInformation(cli, mem_ctx,
1872 DS_ROLE_BASIC_INFORMATION,
1875 cli_rpc_pipe_close(cli);
1877 if (!NT_STATUS_IS_OK(result)) {
1878 DEBUG(5, ("set_dc_type_and_flags_connect: rpccli_ds_getprimarydominfo "
1879 "on domain %s failed: (%s)\n",
1880 domain->name, nt_errstr(result)));
1882 /* older samba3 DCs will return DCERPC_FAULT_OP_RNG_ERROR for
1883 * every opcode on the DSSETUP pipe, continue with
1884 * no_dssetup mode here as well to get domain->initialized
1887 if (NT_STATUS_V(result) == DCERPC_FAULT_OP_RNG_ERROR) {
1891 TALLOC_FREE(mem_ctx);
1895 if ((info.basic.flags & DS_ROLE_PRIMARY_DS_RUNNING) &&
1896 !(info.basic.flags & DS_ROLE_PRIMARY_DS_MIXED_MODE)) {
1897 domain->native_mode = True;
1899 domain->native_mode = False;
1903 cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_LSARPC, &result);
1906 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1907 "PI_LSARPC on domain %s: (%s)\n",
1908 domain->name, nt_errstr(result)));
1909 cli_rpc_pipe_close(cli);
1910 TALLOC_FREE(mem_ctx);
1914 result = rpccli_lsa_open_policy2(cli, mem_ctx, True,
1915 SEC_RIGHTS_MAXIMUM_ALLOWED, &pol);
1917 if (NT_STATUS_IS_OK(result)) {
1918 /* This particular query is exactly what Win2k clients use
1919 to determine that the DC is active directory */
1920 result = rpccli_lsa_QueryInfoPolicy2(cli, mem_ctx,
1922 LSA_POLICY_INFO_DNS,
1926 if (NT_STATUS_IS_OK(result)) {
1927 domain->active_directory = True;
1929 if (lsa_info->dns.name.string) {
1930 fstrcpy(domain->name, lsa_info->dns.name.string);
1933 if (lsa_info->dns.dns_domain.string) {
1934 fstrcpy(domain->alt_name,
1935 lsa_info->dns.dns_domain.string);
1938 /* See if we can set some domain trust flags about
1941 if (lsa_info->dns.dns_forest.string) {
1942 fstrcpy(domain->forest_name,
1943 lsa_info->dns.dns_forest.string);
1945 if (strequal(domain->forest_name, domain->alt_name)) {
1946 domain->domain_flags = NETR_TRUST_FLAG_TREEROOT;
1950 if (lsa_info->dns.sid) {
1951 sid_copy(&domain->sid, lsa_info->dns.sid);
1954 domain->active_directory = False;
1956 result = rpccli_lsa_open_policy(cli, mem_ctx, True,
1957 SEC_RIGHTS_MAXIMUM_ALLOWED,
1960 if (!NT_STATUS_IS_OK(result)) {
1964 result = rpccli_lsa_QueryInfoPolicy(cli, mem_ctx,
1966 LSA_POLICY_INFO_ACCOUNT_DOMAIN,
1969 if (NT_STATUS_IS_OK(result)) {
1971 if (lsa_info->account_domain.name.string) {
1972 fstrcpy(domain->name,
1973 lsa_info->account_domain.name.string);
1976 if (lsa_info->account_domain.sid) {
1977 sid_copy(&domain->sid, lsa_info->account_domain.sid);
1983 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s is %sin native mode.\n",
1984 domain->name, domain->native_mode ? "" : "NOT "));
1986 DEBUG(5,("set_dc_type_and_flags_connect: domain %s is %srunning active directory.\n",
1987 domain->name, domain->active_directory ? "" : "NOT "));
1989 cli_rpc_pipe_close(cli);
1991 TALLOC_FREE(mem_ctx);
1993 domain->initialized = True;
1996 /**********************************************************************
1997 Set the domain_flags (trust attributes, domain operating modes, etc...
1998 ***********************************************************************/
2000 static void set_dc_type_and_flags( struct winbindd_domain *domain )
2002 /* we always have to contact our primary domain */
2004 if ( domain->primary ) {
2005 DEBUG(10,("set_dc_type_and_flags: setting up flags for "
2006 "primary domain\n"));
2007 set_dc_type_and_flags_connect( domain );
2011 /* Use our DC to get the information if possible */
2013 if ( !set_dc_type_and_flags_trustinfo( domain ) ) {
2014 /* Otherwise, fallback to contacting the
2016 set_dc_type_and_flags_connect( domain );
2024 /**********************************************************************
2025 ***********************************************************************/
2027 static bool cm_get_schannel_dcinfo(struct winbindd_domain *domain,
2028 struct dcinfo **ppdc)
2031 struct rpc_pipe_client *netlogon_pipe;
2033 if (lp_client_schannel() == False) {
2037 result = cm_connect_netlogon(domain, &netlogon_pipe);
2038 if (!NT_STATUS_IS_OK(result)) {
2042 /* Return a pointer to the struct dcinfo from the
2045 *ppdc = domain->conn.netlogon_pipe->dc;
2049 NTSTATUS cm_connect_sam(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2050 struct rpc_pipe_client **cli, POLICY_HND *sam_handle)
2052 struct winbindd_cm_conn *conn;
2053 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2055 struct dcinfo *p_dcinfo;
2056 char *machine_password = NULL;
2057 char *machine_account = NULL;
2058 char *domain_name = NULL;
2060 result = init_dc_connection(domain);
2061 if (!NT_STATUS_IS_OK(result)) {
2065 conn = &domain->conn;
2067 if (conn->samr_pipe != NULL) {
2072 * No SAMR pipe yet. Attempt to get an NTLMSSP SPNEGO authenticated
2073 * sign and sealed pipe using the machine account password by
2074 * preference. If we can't - try schannel, if that fails, try
2078 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
2079 if ((conn->cli->user_name[0] == '\0') ||
2080 (conn->cli->domain[0] == '\0') ||
2081 (conn_pwd[0] == '\0'))
2083 result = get_trust_creds(domain, &machine_password,
2084 &machine_account, NULL);
2085 if (!NT_STATUS_IS_OK(result)) {
2086 DEBUG(10, ("cm_connect_sam: No no user available for "
2087 "domain %s, trying schannel\n", conn->cli->domain));
2090 domain_name = domain->name;
2092 machine_password = SMB_STRDUP(conn_pwd);
2093 machine_account = SMB_STRDUP(conn->cli->user_name);
2094 domain_name = conn->cli->domain;
2097 if (!machine_password || !machine_account) {
2098 result = NT_STATUS_NO_MEMORY;
2102 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2103 authenticated SAMR pipe with sign & seal. */
2105 cli_rpc_pipe_open_spnego_ntlmssp(conn->cli, PI_SAMR,
2106 PIPE_AUTH_LEVEL_PRIVACY,
2109 machine_password, &result);
2111 if (conn->samr_pipe == NULL) {
2112 DEBUG(10,("cm_connect_sam: failed to connect to SAMR "
2113 "pipe for domain %s using NTLMSSP "
2114 "authenticated pipe: user %s\\%s. Error was "
2115 "%s\n", domain->name, domain_name,
2116 machine_account, nt_errstr(result)));
2120 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for "
2121 "domain %s using NTLMSSP authenticated "
2122 "pipe: user %s\\%s\n", domain->name,
2123 domain_name, machine_account));
2125 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2126 conn->samr_pipe->cli->desthost,
2127 SEC_RIGHTS_MAXIMUM_ALLOWED,
2128 &conn->sam_connect_handle);
2129 if (NT_STATUS_IS_OK(result)) {
2132 DEBUG(10,("cm_connect_sam: ntlmssp-sealed rpccli_samr_Connect2 "
2133 "failed for domain %s, error was %s. Trying schannel\n",
2134 domain->name, nt_errstr(result) ));
2135 cli_rpc_pipe_close(conn->samr_pipe);
2139 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2141 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
2142 /* If this call fails - conn->cli can now be NULL ! */
2143 DEBUG(10, ("cm_connect_sam: Could not get schannel auth info "
2144 "for domain %s, trying anon\n", domain->name));
2147 conn->samr_pipe = cli_rpc_pipe_open_schannel_with_key
2148 (conn->cli, PI_SAMR, PIPE_AUTH_LEVEL_PRIVACY,
2149 domain->name, p_dcinfo, &result);
2151 if (conn->samr_pipe == NULL) {
2152 DEBUG(10,("cm_connect_sam: failed to connect to SAMR pipe for "
2153 "domain %s using schannel. Error was %s\n",
2154 domain->name, nt_errstr(result) ));
2157 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for domain %s using "
2158 "schannel.\n", domain->name ));
2160 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2161 conn->samr_pipe->cli->desthost,
2162 SEC_RIGHTS_MAXIMUM_ALLOWED,
2163 &conn->sam_connect_handle);
2164 if (NT_STATUS_IS_OK(result)) {
2167 DEBUG(10,("cm_connect_sam: schannel-sealed rpccli_samr_Connect2 failed "
2168 "for domain %s, error was %s. Trying anonymous\n",
2169 domain->name, nt_errstr(result) ));
2170 cli_rpc_pipe_close(conn->samr_pipe);
2174 /* Finally fall back to anonymous. */
2175 conn->samr_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_SAMR,
2178 if (conn->samr_pipe == NULL) {
2179 result = NT_STATUS_PIPE_NOT_AVAILABLE;
2183 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2184 conn->samr_pipe->cli->desthost,
2185 SEC_RIGHTS_MAXIMUM_ALLOWED,
2186 &conn->sam_connect_handle);
2187 if (!NT_STATUS_IS_OK(result)) {
2188 DEBUG(10,("cm_connect_sam: rpccli_samr_Connect2 failed "
2189 "for domain %s Error was %s\n",
2190 domain->name, nt_errstr(result) ));
2195 result = rpccli_samr_OpenDomain(conn->samr_pipe,
2197 &conn->sam_connect_handle,
2198 SEC_RIGHTS_MAXIMUM_ALLOWED,
2200 &conn->sam_domain_handle);
2204 if (!NT_STATUS_IS_OK(result)) {
2205 invalidate_cm_connection(conn);
2209 *cli = conn->samr_pipe;
2210 *sam_handle = conn->sam_domain_handle;
2211 SAFE_FREE(machine_password);
2212 SAFE_FREE(machine_account);
2216 NTSTATUS cm_connect_lsa(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2217 struct rpc_pipe_client **cli, POLICY_HND *lsa_policy)
2219 struct winbindd_cm_conn *conn;
2220 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2222 struct dcinfo *p_dcinfo;
2224 result = init_dc_connection(domain);
2225 if (!NT_STATUS_IS_OK(result))
2228 conn = &domain->conn;
2230 if (conn->lsa_pipe != NULL) {
2234 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
2235 if ((conn->cli->user_name[0] == '\0') ||
2236 (conn->cli->domain[0] == '\0') ||
2237 (conn_pwd[0] == '\0')) {
2238 DEBUG(10, ("cm_connect_lsa: No no user available for "
2239 "domain %s, trying schannel\n", conn->cli->domain));
2243 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2244 * authenticated LSA pipe with sign & seal. */
2245 conn->lsa_pipe = cli_rpc_pipe_open_spnego_ntlmssp
2246 (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
2247 conn->cli->domain, conn->cli->user_name, conn_pwd, &result);
2249 if (conn->lsa_pipe == NULL) {
2250 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2251 "domain %s using NTLMSSP authenticated pipe: user "
2252 "%s\\%s. Error was %s. Trying schannel.\n",
2253 domain->name, conn->cli->domain,
2254 conn->cli->user_name, nt_errstr(result)));
2258 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2259 "NTLMSSP authenticated pipe: user %s\\%s\n",
2260 domain->name, conn->cli->domain, conn->cli->user_name ));
2262 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2263 SEC_RIGHTS_MAXIMUM_ALLOWED,
2265 if (NT_STATUS_IS_OK(result)) {
2269 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2272 cli_rpc_pipe_close(conn->lsa_pipe);
2276 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2278 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
2279 /* If this call fails - conn->cli can now be NULL ! */
2280 DEBUG(10, ("cm_connect_lsa: Could not get schannel auth info "
2281 "for domain %s, trying anon\n", domain->name));
2284 conn->lsa_pipe = cli_rpc_pipe_open_schannel_with_key
2285 (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
2286 domain->name, p_dcinfo, &result);
2288 if (conn->lsa_pipe == NULL) {
2289 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2290 "domain %s using schannel. Error was %s\n",
2291 domain->name, nt_errstr(result) ));
2294 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2295 "schannel.\n", domain->name ));
2297 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2298 SEC_RIGHTS_MAXIMUM_ALLOWED,
2300 if (NT_STATUS_IS_OK(result)) {
2304 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2307 cli_rpc_pipe_close(conn->lsa_pipe);
2311 conn->lsa_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_LSARPC,
2313 if (conn->lsa_pipe == NULL) {
2314 result = NT_STATUS_PIPE_NOT_AVAILABLE;
2318 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2319 SEC_RIGHTS_MAXIMUM_ALLOWED,
2322 if (!NT_STATUS_IS_OK(result)) {
2323 invalidate_cm_connection(conn);
2327 *cli = conn->lsa_pipe;
2328 *lsa_policy = conn->lsa_policy;
2332 /****************************************************************************
2333 Open the netlogon pipe to this DC. Use schannel if specified in client conf.
2334 session key stored in conn->netlogon_pipe->dc->sess_key.
2335 ****************************************************************************/
2337 NTSTATUS cm_connect_netlogon(struct winbindd_domain *domain,
2338 struct rpc_pipe_client **cli)
2340 struct winbindd_cm_conn *conn;
2343 uint32 neg_flags = NETLOGON_NEG_SELECT_AUTH2_FLAGS;
2345 uint32 sec_chan_type;
2346 const char *account_name;
2347 struct rpc_pipe_client *netlogon_pipe = NULL;
2351 result = init_dc_connection(domain);
2352 if (!NT_STATUS_IS_OK(result)) {
2356 conn = &domain->conn;
2358 if (conn->netlogon_pipe != NULL) {
2359 *cli = conn->netlogon_pipe;
2360 return NT_STATUS_OK;
2363 netlogon_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_NETLOGON,
2365 if (netlogon_pipe == NULL) {
2369 if ((!IS_DC) && (!domain->primary)) {
2370 /* Clear the schannel request bit and drop down */
2371 neg_flags &= ~NETLOGON_NEG_SCHANNEL;
2375 if (lp_client_schannel() != False) {
2376 neg_flags |= NETLOGON_NEG_SCHANNEL;
2379 if (!get_trust_pw_hash(domain->name, mach_pwd, &account_name,
2382 cli_rpc_pipe_close(netlogon_pipe);
2383 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2386 result = rpccli_netlogon_setup_creds(
2388 domain->dcname, /* server name. */
2389 domain->name, /* domain name */
2390 global_myname(), /* client name */
2391 account_name, /* machine account */
2392 mach_pwd, /* machine password */
2393 sec_chan_type, /* from get_trust_pw */
2396 if (!NT_STATUS_IS_OK(result)) {
2397 cli_rpc_pipe_close(netlogon_pipe);
2401 if ((lp_client_schannel() == True) &&
2402 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2403 DEBUG(3, ("Server did not offer schannel\n"));
2404 cli_rpc_pipe_close(netlogon_pipe);
2405 return NT_STATUS_ACCESS_DENIED;
2409 if ((lp_client_schannel() == False) ||
2410 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2411 /* We're done - just keep the existing connection to NETLOGON
2413 conn->netlogon_pipe = netlogon_pipe;
2414 *cli = conn->netlogon_pipe;
2415 return NT_STATUS_OK;
2418 /* Using the credentials from the first pipe, open a signed and sealed
2419 second netlogon pipe. The session key is stored in the schannel
2420 part of the new pipe auth struct.
2423 conn->netlogon_pipe =
2424 cli_rpc_pipe_open_schannel_with_key(conn->cli,
2426 PIPE_AUTH_LEVEL_PRIVACY,
2431 /* We can now close the initial netlogon pipe. */
2432 cli_rpc_pipe_close(netlogon_pipe);
2434 if (conn->netlogon_pipe == NULL) {
2435 DEBUG(3, ("Could not open schannel'ed NETLOGON pipe. Error "
2436 "was %s\n", nt_errstr(result)));
2438 /* make sure we return something besides OK */
2439 return !NT_STATUS_IS_OK(result) ? result : NT_STATUS_PIPE_NOT_AVAILABLE;
2442 *cli = conn->netlogon_pipe;
2443 return NT_STATUS_OK;