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();
177 if (domain->dc_probe_pid != (pid_t)-1) {
179 * We might already have a DC probe
180 * child working, check.
182 if (process_exists_by_pid(domain->dc_probe_pid)) {
183 DEBUG(10,("fork_child_dc_connect: pid %u already "
184 "checking for DC's.\n",
185 (unsigned int)domain->dc_probe_pid));
188 domain->dc_probe_pid = (pid_t)-1;
191 domain->dc_probe_pid = sys_fork();
193 if (domain->dc_probe_pid == (pid_t)-1) {
194 DEBUG(0, ("fork_child_dc_connect: Could not fork: %s\n", strerror(errno)));
198 if (domain->dc_probe_pid != (pid_t)0) {
200 messaging_register(winbind_messaging_context(), NULL,
201 MSG_WINBIND_TRY_TO_GO_ONLINE,
202 msg_try_to_go_online);
203 messaging_register(winbind_messaging_context(), NULL,
204 MSG_WINBIND_FAILED_TO_GO_ONLINE,
205 msg_failed_to_go_online);
211 /* Leave messages blocked - we will never process one. */
213 if (!override_logfile) {
214 if (asprintf(&lfile, "%s/log.winbindd-dc-connect", get_dyn_LOGFILEBASE()) == -1) {
215 DEBUG(0, ("fork_child_dc_connect: out of memory.\n"));
220 if (!winbindd_reinit_after_fork(lfile)) {
221 messaging_send_buf(winbind_messaging_context(),
222 pid_to_procid(parent_pid),
223 MSG_WINBIND_FAILED_TO_GO_ONLINE,
224 (uint8 *)domain->name,
225 strlen(domain->name)+1);
230 mem_ctx = talloc_init("fork_child_dc_connect");
232 DEBUG(0,("talloc_init failed.\n"));
233 messaging_send_buf(winbind_messaging_context(),
234 pid_to_procid(parent_pid),
235 MSG_WINBIND_FAILED_TO_GO_ONLINE,
236 (uint8 *)domain->name,
237 strlen(domain->name)+1);
241 if ((!get_dcs(mem_ctx, domain, &dcs, &num_dcs)) || (num_dcs == 0)) {
242 /* Still offline ? Can't find DC's. */
243 messaging_send_buf(winbind_messaging_context(),
244 pid_to_procid(parent_pid),
245 MSG_WINBIND_FAILED_TO_GO_ONLINE,
246 (uint8 *)domain->name,
247 strlen(domain->name)+1);
251 /* We got a DC. Send a message to our parent to get it to
252 try and do the same. */
254 messaging_send_buf(winbind_messaging_context(),
255 pid_to_procid(parent_pid),
256 MSG_WINBIND_TRY_TO_GO_ONLINE,
257 (uint8 *)domain->name,
258 strlen(domain->name)+1);
262 /****************************************************************
263 Handler triggered if we're offline to try and detect a DC.
264 ****************************************************************/
266 static void check_domain_online_handler(struct event_context *ctx,
267 struct timed_event *te,
271 struct winbindd_domain *domain =
272 (struct winbindd_domain *)private_data;
274 DEBUG(10,("check_domain_online_handler: called for domain "
275 "%s (online = %s)\n", domain->name,
276 domain->online ? "True" : "False" ));
278 TALLOC_FREE(domain->check_online_event);
280 /* Are we still in "startup" mode ? */
282 if (domain->startup && (now.tv_sec > domain->startup_time + 30)) {
283 /* No longer in "startup" mode. */
284 DEBUG(10,("check_domain_online_handler: domain %s no longer in 'startup' mode.\n",
286 domain->startup = False;
289 /* We've been told to stay offline, so stay
292 if (get_global_winbindd_state_offline()) {
293 DEBUG(10,("check_domain_online_handler: domain %s remaining globally offline\n",
298 /* Fork a child to test if it can contact a DC.
299 If it can then send ourselves a message to
300 cause a reconnect. */
302 fork_child_dc_connect(domain);
305 /****************************************************************
306 If we're still offline setup the timeout check.
307 ****************************************************************/
309 static void calc_new_online_timeout_check(struct winbindd_domain *domain)
311 int wbr = lp_winbind_reconnect_delay();
313 if (domain->startup) {
314 domain->check_online_timeout = 10;
315 } else if (domain->check_online_timeout < wbr) {
316 domain->check_online_timeout = wbr;
320 /****************************************************************
321 Set domain offline and also add handler to put us back online
323 ****************************************************************/
325 void set_domain_offline(struct winbindd_domain *domain)
327 DEBUG(10,("set_domain_offline: called for domain %s\n",
330 TALLOC_FREE(domain->check_online_event);
332 if (domain->internal) {
333 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
338 domain->online = False;
340 /* Offline domains are always initialized. They're
341 re-initialized when they go back online. */
343 domain->initialized = True;
345 /* We only add the timeout handler that checks and
346 allows us to go back online when we've not
347 been told to remain offline. */
349 if (get_global_winbindd_state_offline()) {
350 DEBUG(10,("set_domain_offline: domain %s remaining globally offline\n",
355 /* If we're in statup mode, check again in 10 seconds, not in
356 lp_winbind_reconnect_delay() seconds (which is 30 seconds by default). */
358 calc_new_online_timeout_check(domain);
360 domain->check_online_event = event_add_timed(winbind_event_context(),
362 timeval_current_ofs(domain->check_online_timeout,0),
363 check_domain_online_handler,
366 /* The above *has* to succeed for winbindd to work. */
367 if (!domain->check_online_event) {
368 smb_panic("set_domain_offline: failed to add online handler");
371 DEBUG(10,("set_domain_offline: added event handler for domain %s\n",
374 /* Send an offline message to the idmap child when our
375 primary domain goes offline */
377 if ( domain->primary ) {
378 struct winbindd_child *idmap = idmap_child();
380 if ( idmap->pid != 0 ) {
381 messaging_send_buf(winbind_messaging_context(),
382 pid_to_procid(idmap->pid),
384 (uint8 *)domain->name,
385 strlen(domain->name)+1);
392 /****************************************************************
393 Set domain online - if allowed.
394 ****************************************************************/
396 static void set_domain_online(struct winbindd_domain *domain)
398 DEBUG(10,("set_domain_online: called for domain %s\n",
401 if (domain->internal) {
402 DEBUG(3,("set_domain_online: domain %s is internal - logic error.\n",
407 if (get_global_winbindd_state_offline()) {
408 DEBUG(10,("set_domain_online: domain %s remaining globally offline\n",
413 winbindd_set_locator_kdc_envs(domain);
415 /* If we are waiting to get a krb5 ticket, trigger immediately. */
416 ccache_regain_all_now();
418 /* Ok, we're out of any startup mode now... */
419 domain->startup = False;
421 if (domain->online == False) {
422 /* We were offline - now we're online. We default to
423 using the MS-RPC backend if we started offline,
424 and if we're going online for the first time we
425 should really re-initialize the backends and the
426 checks to see if we're talking to an AD or NT domain.
429 domain->initialized = False;
431 /* 'reconnect_methods' is the MS-RPC backend. */
432 if (domain->backend == &reconnect_methods) {
433 domain->backend = NULL;
437 /* Ensure we have no online timeout checks. */
438 domain->check_online_timeout = 0;
439 TALLOC_FREE(domain->check_online_event);
441 /* Ensure we ignore any pending child messages. */
442 messaging_deregister(winbind_messaging_context(),
443 MSG_WINBIND_TRY_TO_GO_ONLINE, NULL);
444 messaging_deregister(winbind_messaging_context(),
445 MSG_WINBIND_FAILED_TO_GO_ONLINE, NULL);
447 domain->online = True;
449 /* Send an online message to the idmap child when our
450 primary domain comes online */
452 if ( domain->primary ) {
453 struct winbindd_child *idmap = idmap_child();
455 if ( idmap->pid != 0 ) {
456 messaging_send_buf(winbind_messaging_context(),
457 pid_to_procid(idmap->pid),
459 (uint8 *)domain->name,
460 strlen(domain->name)+1);
467 /****************************************************************
468 Requested to set a domain online.
469 ****************************************************************/
471 void set_domain_online_request(struct winbindd_domain *domain)
475 DEBUG(10,("set_domain_online_request: called for domain %s\n",
478 if (get_global_winbindd_state_offline()) {
479 DEBUG(10,("set_domain_online_request: domain %s remaining globally offline\n",
484 /* We've been told it's safe to go online and
485 try and connect to a DC. But I don't believe it
486 because network manager seems to lie.
487 Wait at least 5 seconds. Heuristics suck... */
492 /* Go into "startup" mode again. */
493 domain->startup_time = tev.tv_sec;
494 domain->startup = True;
498 if (!domain->check_online_event) {
499 /* If we've come from being globally offline we
500 don't have a check online event handler set.
501 We need to add one now we're trying to go
504 DEBUG(10,("set_domain_online_request: domain %s was globally offline.\n",
508 TALLOC_FREE(domain->check_online_event);
510 domain->check_online_event = event_add_timed(winbind_event_context(),
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");
522 /****************************************************************
523 Add -ve connection cache entries for domain and realm.
524 ****************************************************************/
526 void winbind_add_failed_connection_entry(const struct winbindd_domain *domain,
530 add_failed_connection_entry(domain->name, server, result);
531 /* If this was the saf name for the last thing we talked to,
533 saf_delete(domain->name);
534 if (*domain->alt_name) {
535 add_failed_connection_entry(domain->alt_name, server, result);
536 saf_delete(domain->alt_name);
538 winbindd_unset_locator_kdc_env(domain);
541 /* Choose between anonymous or authenticated connections. We need to use
542 an authenticated connection if DCs have the RestrictAnonymous registry
543 entry set > 0, or the "Additional restrictions for anonymous
544 connections" set in the win2k Local Security Policy.
546 Caller to free() result in domain, username, password
549 static void cm_get_ipc_userpass(char **username, char **domain, char **password)
551 *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
552 *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
553 *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
555 if (*username && **username) {
557 if (!*domain || !**domain)
558 *domain = smb_xstrdup(lp_workgroup());
560 if (!*password || !**password)
561 *password = smb_xstrdup("");
563 DEBUG(3, ("cm_get_ipc_userpass: Retrieved auth-user from secrets.tdb [%s\\%s]\n",
564 *domain, *username));
567 DEBUG(3, ("cm_get_ipc_userpass: No auth-user defined\n"));
568 *username = smb_xstrdup("");
569 *domain = smb_xstrdup("");
570 *password = smb_xstrdup("");
574 static bool get_dc_name_via_netlogon(struct winbindd_domain *domain,
576 struct sockaddr_storage *dc_ss)
578 struct winbindd_domain *our_domain = NULL;
579 struct rpc_pipe_client *netlogon_pipe = NULL;
583 unsigned int orig_timeout;
584 const char *tmp = NULL;
587 /* Hmmmm. We can only open one connection to the NETLOGON pipe at the
594 if (domain->primary) {
598 our_domain = find_our_domain();
600 if ((mem_ctx = talloc_init("get_dc_name_via_netlogon")) == NULL) {
604 result = cm_connect_netlogon(our_domain, &netlogon_pipe);
605 if (!NT_STATUS_IS_OK(result)) {
606 talloc_destroy(mem_ctx);
610 /* This call can take a long time - allow the server to time out.
611 35 seconds should do it. */
613 orig_timeout = rpccli_set_timeout(netlogon_pipe, 35000);
615 if (our_domain->active_directory) {
616 struct netr_DsRGetDCNameInfo *domain_info = NULL;
618 result = rpccli_netr_DsRGetDCName(netlogon_pipe,
627 if (NT_STATUS_IS_OK(result) && W_ERROR_IS_OK(werr)) {
629 mem_ctx, domain_info->dc_unc);
631 DEBUG(0, ("talloc_strdup failed\n"));
632 talloc_destroy(mem_ctx);
635 if (strlen(domain->alt_name) == 0) {
636 fstrcpy(domain->alt_name,
637 domain_info->domain_name);
639 if (strlen(domain->forest_name) == 0) {
640 fstrcpy(domain->forest_name,
641 domain_info->forest_name);
645 result = rpccli_netr_GetAnyDCName(netlogon_pipe, mem_ctx,
652 /* And restore our original timeout. */
653 rpccli_set_timeout(netlogon_pipe, orig_timeout);
655 if (!NT_STATUS_IS_OK(result)) {
656 DEBUG(10,("rpccli_netr_GetAnyDCName failed: %s\n",
658 talloc_destroy(mem_ctx);
662 if (!W_ERROR_IS_OK(werr)) {
663 DEBUG(10,("rpccli_netr_GetAnyDCName failed: %s\n",
665 talloc_destroy(mem_ctx);
669 /* rpccli_netr_GetAnyDCName gives us a name with \\ */
670 p = strip_hostname(tmp);
674 talloc_destroy(mem_ctx);
676 DEBUG(10,("rpccli_netr_GetAnyDCName returned %s\n", dcname));
678 if (!resolve_name(dcname, dc_ss, 0x20)) {
686 * Helper function to assemble trust password and account name
688 static NTSTATUS get_trust_creds(const struct winbindd_domain *domain,
689 char **machine_password,
690 char **machine_account,
691 char **machine_krb5_principal)
693 const char *account_name;
694 const char *name = NULL;
696 /* If we are a DC and this is not our own domain */
701 struct winbindd_domain *our_domain = find_our_domain();
704 return NT_STATUS_INVALID_SERVER_STATE;
706 name = our_domain->name;
709 if (!get_trust_pw_clear(name, machine_password,
710 &account_name, NULL))
712 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
715 if ((machine_account != NULL) &&
716 (asprintf(machine_account, "%s$", account_name) == -1))
718 return NT_STATUS_NO_MEMORY;
721 /* For now assume our machine account only exists in our domain */
723 if (machine_krb5_principal != NULL)
725 struct winbindd_domain *our_domain = find_our_domain();
728 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
731 if (asprintf(machine_krb5_principal, "%s$@%s",
732 account_name, our_domain->alt_name) == -1)
734 return NT_STATUS_NO_MEMORY;
737 strupper_m(*machine_krb5_principal);
743 /************************************************************************
744 Given a fd with a just-connected TCP connection to a DC, open a connection
746 ************************************************************************/
748 static NTSTATUS cm_prepare_connection(const struct winbindd_domain *domain,
750 const char *controller,
751 struct cli_state **cli,
754 char *machine_password = NULL;
755 char *machine_krb5_principal = NULL;
756 char *machine_account = NULL;
757 char *ipc_username = NULL;
758 char *ipc_domain = NULL;
759 char *ipc_password = NULL;
761 struct named_mutex *mutex;
763 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
765 struct sockaddr peeraddr;
766 socklen_t peeraddr_len;
768 struct sockaddr_in *peeraddr_in = (struct sockaddr_in *)&peeraddr;
770 DEBUG(10,("cm_prepare_connection: connecting to DC %s for domain %s\n",
771 controller, domain->name ));
775 mutex = grab_named_mutex(talloc_tos(), controller,
776 WINBIND_SERVER_MUTEX_WAIT_TIME);
778 DEBUG(0,("cm_prepare_connection: mutex grab failed for %s\n",
780 result = NT_STATUS_POSSIBLE_DEADLOCK;
784 if ((*cli = cli_initialise()) == NULL) {
785 DEBUG(1, ("Could not cli_initialize\n"));
786 result = NT_STATUS_NO_MEMORY;
790 (*cli)->timeout = 10000; /* 10 seconds */
792 fstrcpy((*cli)->desthost, controller);
793 (*cli)->use_kerberos = True;
795 peeraddr_len = sizeof(peeraddr);
797 if ((getpeername((*cli)->fd, &peeraddr, &peeraddr_len) != 0) ||
798 (peeraddr_len != sizeof(struct sockaddr_in)) ||
799 (peeraddr_in->sin_family != PF_INET))
801 DEBUG(0,("cm_prepare_connection: %s\n", strerror(errno)));
802 result = NT_STATUS_UNSUCCESSFUL;
806 if (ntohs(peeraddr_in->sin_port) == 139) {
807 struct nmb_name calling;
808 struct nmb_name called;
810 make_nmb_name(&calling, global_myname(), 0x0);
811 make_nmb_name(&called, "*SMBSERVER", 0x20);
813 if (!cli_session_request(*cli, &calling, &called)) {
814 DEBUG(8, ("cli_session_request failed for %s\n",
816 result = NT_STATUS_UNSUCCESSFUL;
821 result = cli_negprot(*cli);
823 if (!NT_STATUS_IS_OK(result)) {
824 DEBUG(1, ("cli_negprot failed: %s\n", nt_errstr(result)));
828 if (!is_dc_trusted_domain_situation(domain->name) &&
829 (*cli)->protocol >= PROTOCOL_NT1 &&
830 (*cli)->capabilities & CAP_EXTENDED_SECURITY)
832 ADS_STATUS ads_status;
834 result = get_trust_creds(domain, &machine_password,
836 &machine_krb5_principal);
837 if (!NT_STATUS_IS_OK(result)) {
841 if (lp_security() == SEC_ADS) {
843 /* Try a krb5 session */
845 (*cli)->use_kerberos = True;
846 DEBUG(5, ("connecting to %s from %s with kerberos principal "
847 "[%s] and realm [%s]\n", controller, global_myname(),
848 machine_krb5_principal, domain->alt_name));
850 winbindd_set_locator_kdc_envs(domain);
852 ads_status = cli_session_setup_spnego(*cli,
853 machine_krb5_principal,
858 if (!ADS_ERR_OK(ads_status)) {
859 DEBUG(4,("failed kerberos session setup with %s\n",
860 ads_errstr(ads_status)));
863 result = ads_ntstatus(ads_status);
864 if (NT_STATUS_IS_OK(result)) {
865 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
866 result = cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
867 if (!NT_STATUS_IS_OK(result)) {
870 goto session_setup_done;
874 /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the machine account. */
875 (*cli)->use_kerberos = False;
877 DEBUG(5, ("connecting to %s from %s with username "
878 "[%s]\\[%s]\n", controller, global_myname(),
879 lp_workgroup(), machine_account));
881 ads_status = cli_session_setup_spnego(*cli,
886 if (!ADS_ERR_OK(ads_status)) {
887 DEBUG(4, ("authenticated session setup failed with %s\n",
888 ads_errstr(ads_status)));
891 result = ads_ntstatus(ads_status);
892 if (NT_STATUS_IS_OK(result)) {
893 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
894 result = cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
895 if (!NT_STATUS_IS_OK(result)) {
898 goto session_setup_done;
902 /* Fall back to non-kerberos session setup with auth_user */
904 (*cli)->use_kerberos = False;
906 cm_get_ipc_userpass(&ipc_username, &ipc_domain, &ipc_password);
908 if ((((*cli)->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) != 0) &&
909 (strlen(ipc_username) > 0)) {
911 /* Only try authenticated if we have a username */
913 DEBUG(5, ("connecting to %s from %s with username "
914 "[%s]\\[%s]\n", controller, global_myname(),
915 ipc_domain, ipc_username));
917 if (NT_STATUS_IS_OK(cli_session_setup(
919 ipc_password, strlen(ipc_password)+1,
920 ipc_password, strlen(ipc_password)+1,
922 /* Successful logon with given username. */
923 result = cli_init_creds(*cli, ipc_username, ipc_domain, ipc_password);
924 if (!NT_STATUS_IS_OK(result)) {
927 goto session_setup_done;
929 DEBUG(4, ("authenticated session setup with user %s\\%s failed.\n",
930 ipc_domain, ipc_username ));
936 /* Fall back to anonymous connection, this might fail later */
937 DEBUG(10,("cm_prepare_connection: falling back to anonymous "
938 "connection for DC %s\n",
941 if (NT_STATUS_IS_OK(cli_session_setup(*cli, "", NULL, 0,
943 DEBUG(5, ("Connected anonymously\n"));
944 result = cli_init_creds(*cli, "", "", "");
945 if (!NT_STATUS_IS_OK(result)) {
948 goto session_setup_done;
951 result = cli_nt_error(*cli);
953 if (NT_STATUS_IS_OK(result))
954 result = NT_STATUS_UNSUCCESSFUL;
956 /* We can't session setup */
962 /* cache the server name for later connections */
964 saf_store( domain->name, (*cli)->desthost );
965 if (domain->alt_name && (*cli)->use_kerberos) {
966 saf_store( domain->alt_name, (*cli)->desthost );
969 winbindd_set_locator_kdc_envs(domain);
971 result = cli_tcon_andx(*cli, "IPC$", "IPC", "", 0);
973 if (!NT_STATUS_IS_OK(result)) {
974 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(result)));
981 /* set the domain if empty; needed for schannel connections */
982 if ( !(*cli)->domain[0] ) {
983 result = cli_set_domain((*cli), domain->name);
984 if (!NT_STATUS_IS_OK(result)) {
989 result = NT_STATUS_OK;
993 SAFE_FREE(machine_account);
994 SAFE_FREE(machine_password);
995 SAFE_FREE(machine_krb5_principal);
996 SAFE_FREE(ipc_username);
997 SAFE_FREE(ipc_domain);
998 SAFE_FREE(ipc_password);
1000 if (!NT_STATUS_IS_OK(result)) {
1001 winbind_add_failed_connection_entry(domain, controller, result);
1002 if ((*cli) != NULL) {
1011 /*******************************************************************
1012 Add a dcname and sockaddr_storage pair to the end of a dc_name_ip
1015 Keeps the list unique by not adding duplicate entries.
1017 @param[in] mem_ctx talloc memory context to allocate from
1018 @param[in] domain_name domain of the DC
1019 @param[in] dcname name of the DC to add to the list
1020 @param[in] pss Internet address and port pair to add to the list
1021 @param[in,out] dcs array of dc_name_ip structures to add to
1022 @param[in,out] num_dcs number of dcs returned in the dcs array
1023 @return true if the list was added to, false otherwise
1024 *******************************************************************/
1026 static bool add_one_dc_unique(TALLOC_CTX *mem_ctx, const char *domain_name,
1027 const char *dcname, struct sockaddr_storage *pss,
1028 struct dc_name_ip **dcs, int *num)
1032 if (!NT_STATUS_IS_OK(check_negative_conn_cache(domain_name, dcname))) {
1033 DEBUG(10, ("DC %s was in the negative conn cache\n", dcname));
1037 /* Make sure there's no duplicates in the list */
1038 for (i=0; i<*num; i++)
1039 if (sockaddr_equal((struct sockaddr *)&(*dcs)[i].ss, (struct sockaddr *)pss))
1042 *dcs = TALLOC_REALLOC_ARRAY(mem_ctx, *dcs, struct dc_name_ip, (*num)+1);
1047 fstrcpy((*dcs)[*num].name, dcname);
1048 (*dcs)[*num].ss = *pss;
1053 static bool add_sockaddr_to_array(TALLOC_CTX *mem_ctx,
1054 struct sockaddr_storage *pss, uint16 port,
1055 struct sockaddr_storage **addrs, int *num)
1057 *addrs = TALLOC_REALLOC_ARRAY(mem_ctx, *addrs, struct sockaddr_storage, (*num)+1);
1059 if (*addrs == NULL) {
1064 (*addrs)[*num] = *pss;
1065 set_sockaddr_port((struct sockaddr *)&(*addrs)[*num], port);
1071 /*******************************************************************
1072 convert an ip to a name
1073 *******************************************************************/
1075 static bool dcip_to_name(TALLOC_CTX *mem_ctx,
1076 const struct winbindd_domain *domain,
1077 struct sockaddr_storage *pss,
1080 struct ip_service ip_list;
1081 uint32_t nt_version = NETLOGON_NT_VERSION_1;
1087 /* For active directory servers, try to get the ldap server name.
1088 None of these failures should be considered critical for now */
1090 if (lp_security() == SEC_ADS) {
1092 ADS_STATUS ads_status;
1093 char addr[INET6_ADDRSTRLEN];
1095 print_sockaddr(addr, sizeof(addr), pss);
1097 ads = ads_init(domain->alt_name, domain->name, addr);
1098 ads->auth.flags |= ADS_AUTH_NO_BIND;
1100 ads_status = ads_connect(ads);
1101 if (ADS_ERR_OK(ads_status)) {
1102 /* We got a cldap packet. */
1103 fstrcpy(name, ads->config.ldap_server_name);
1104 namecache_store(name, 0x20, 1, &ip_list);
1106 DEBUG(10,("dcip_to_name: flags = 0x%x\n", (unsigned int)ads->config.flags));
1108 if (domain->primary && (ads->config.flags & NBT_SERVER_KDC)) {
1109 if (ads_closest_dc(ads)) {
1110 char *sitename = sitename_fetch(ads->config.realm);
1112 /* We're going to use this KDC for this realm/domain.
1113 If we are using sites, then force the krb5 libs
1116 create_local_private_krb5_conf_for_domain(domain->alt_name,
1121 SAFE_FREE(sitename);
1123 /* use an off site KDC */
1124 create_local_private_krb5_conf_for_domain(domain->alt_name,
1129 winbindd_set_locator_kdc_envs(domain);
1131 /* Ensure we contact this DC also. */
1132 saf_store( domain->name, name);
1133 saf_store( domain->alt_name, name);
1136 ads_destroy( &ads );
1140 ads_destroy( &ads );
1144 /* try GETDC requests next */
1146 if (send_getdc_request(mem_ctx, winbind_messaging_context(),
1147 pss, domain->name, &domain->sid,
1149 const char *dc_name = NULL;
1152 for (i=0; i<5; i++) {
1153 if (receive_getdc_response(mem_ctx, pss, domain->name,
1156 fstrcpy(name, dc_name);
1157 namecache_store(name, 0x20, 1, &ip_list);
1164 /* try node status request */
1166 if ( name_status_find(domain->name, 0x1c, 0x20, pss, name) ) {
1167 namecache_store(name, 0x20, 1, &ip_list);
1173 /*******************************************************************
1174 Retrieve a list of IP addresses for domain controllers.
1176 The array is sorted in the preferred connection order.
1178 @param[in] mem_ctx talloc memory context to allocate from
1179 @param[in] domain domain to retrieve DCs for
1180 @param[out] dcs array of dcs that will be returned
1181 @param[out] num_dcs number of dcs returned in the dcs array
1183 *******************************************************************/
1185 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
1186 struct dc_name_ip **dcs, int *num_dcs)
1189 struct sockaddr_storage ss;
1190 struct ip_service *ip_list = NULL;
1191 int iplist_size = 0;
1194 enum security_types sec = (enum security_types)lp_security();
1196 is_our_domain = strequal(domain->name, lp_workgroup());
1198 /* If not our domain, get the preferred DC, by asking our primary DC */
1200 && get_dc_name_via_netlogon(domain, dcname, &ss)
1201 && add_one_dc_unique(mem_ctx, domain->name, dcname, &ss, dcs,
1204 char addr[INET6_ADDRSTRLEN];
1205 print_sockaddr(addr, sizeof(addr), &ss);
1206 DEBUG(10, ("Retrieved DC %s at %s via netlogon\n",
1211 if (sec == SEC_ADS) {
1212 char *sitename = NULL;
1214 /* We need to make sure we know the local site before
1215 doing any DNS queries, as this will restrict the
1216 get_sorted_dc_list() call below to only fetching
1217 DNS records for the correct site. */
1219 /* Find any DC to get the site record.
1220 We deliberately don't care about the
1223 get_dc_name(domain->name, domain->alt_name, dcname, &ss);
1225 sitename = sitename_fetch(domain->alt_name);
1228 /* Do the site-specific AD dns lookup first. */
1229 get_sorted_dc_list(domain->alt_name, sitename, &ip_list,
1230 &iplist_size, True);
1232 /* Add ips to the DC array. We don't look up the name
1233 of the DC in this function, but we fill in the char*
1234 of the ip now to make the failed connection cache
1236 for ( i=0; i<iplist_size; i++ ) {
1237 char addr[INET6_ADDRSTRLEN];
1238 print_sockaddr(addr, sizeof(addr),
1240 add_one_dc_unique(mem_ctx,
1249 SAFE_FREE(sitename);
1253 /* Now we add DCs from the main AD DNS lookup. */
1254 get_sorted_dc_list(domain->alt_name, NULL, &ip_list,
1255 &iplist_size, True);
1257 for ( i=0; i<iplist_size; i++ ) {
1258 char addr[INET6_ADDRSTRLEN];
1259 print_sockaddr(addr, sizeof(addr),
1261 add_one_dc_unique(mem_ctx,
1273 /* Try standard netbios queries if no ADS */
1274 if (*num_dcs == 0) {
1275 get_sorted_dc_list(domain->name, NULL, &ip_list, &iplist_size,
1278 for ( i=0; i<iplist_size; i++ ) {
1279 char addr[INET6_ADDRSTRLEN];
1280 print_sockaddr(addr, sizeof(addr),
1282 add_one_dc_unique(mem_ctx,
1297 /*******************************************************************
1298 Find and make a connection to a DC in the given domain.
1300 @param[in] mem_ctx talloc memory context to allocate from
1301 @param[in] domain domain to find a dc in
1302 @param[out] dcname NetBIOS or FQDN of DC that's connected to
1303 @param[out] pss DC Internet address and port
1304 @param[out] fd fd of the open socket connected to the newly found dc
1305 @return true when a DC connection is made, false otherwise
1306 *******************************************************************/
1308 static bool find_new_dc(TALLOC_CTX *mem_ctx,
1309 struct winbindd_domain *domain,
1310 fstring dcname, struct sockaddr_storage *pss, int *fd)
1312 struct dc_name_ip *dcs = NULL;
1315 const char **dcnames = NULL;
1316 int num_dcnames = 0;
1318 struct sockaddr_storage *addrs = NULL;
1326 if (!get_dcs(mem_ctx, domain, &dcs, &num_dcs) || (num_dcs == 0))
1329 for (i=0; i<num_dcs; i++) {
1331 if (!add_string_to_array(mem_ctx, dcs[i].name,
1332 &dcnames, &num_dcnames)) {
1335 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, 445,
1336 &addrs, &num_addrs)) {
1340 if (!add_string_to_array(mem_ctx, dcs[i].name,
1341 &dcnames, &num_dcnames)) {
1344 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, 139,
1345 &addrs, &num_addrs)) {
1350 if ((num_dcnames == 0) || (num_dcnames != num_addrs))
1353 if ((addrs == NULL) || (dcnames == NULL))
1356 /* 5 second timeout. */
1357 if (!open_any_socket_out(addrs, num_addrs, 5000, &fd_index, fd) ) {
1358 for (i=0; i<num_dcs; i++) {
1359 char ab[INET6_ADDRSTRLEN];
1360 print_sockaddr(ab, sizeof(ab), &dcs[i].ss);
1361 DEBUG(10, ("find_new_dc: open_any_socket_out failed for "
1362 "domain %s address %s. Error was %s\n",
1363 domain->name, ab, strerror(errno) ));
1364 winbind_add_failed_connection_entry(domain,
1365 dcs[i].name, NT_STATUS_UNSUCCESSFUL);
1370 *pss = addrs[fd_index];
1372 if (*dcnames[fd_index] != '\0' && !is_ipaddress(dcnames[fd_index])) {
1373 /* Ok, we've got a name for the DC */
1374 fstrcpy(dcname, dcnames[fd_index]);
1378 /* Try to figure out the name */
1379 if (dcip_to_name(mem_ctx, domain, pss, dcname)) {
1383 /* We can not continue without the DC's name */
1384 winbind_add_failed_connection_entry(domain, dcs[fd_index].name,
1385 NT_STATUS_UNSUCCESSFUL);
1387 /* Throw away all arrays as we're doing this again. */
1391 TALLOC_FREE(dcnames);
1403 static NTSTATUS cm_open_connection(struct winbindd_domain *domain,
1404 struct winbindd_cm_conn *new_conn)
1406 TALLOC_CTX *mem_ctx;
1408 char *saf_servername = saf_fetch( domain->name );
1411 if ((mem_ctx = talloc_init("cm_open_connection")) == NULL) {
1412 SAFE_FREE(saf_servername);
1413 set_domain_offline(domain);
1414 return NT_STATUS_NO_MEMORY;
1417 /* we have to check the server affinity cache here since
1418 later we selecte a DC based on response time and not preference */
1420 /* Check the negative connection cache
1421 before talking to it. It going down may have
1422 triggered the reconnection. */
1424 if ( saf_servername && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, saf_servername))) {
1426 DEBUG(10,("cm_open_connection: saf_servername is '%s' for domain %s\n",
1427 saf_servername, domain->name ));
1429 /* convert an ip address to a name */
1430 if (is_ipaddress( saf_servername ) ) {
1432 struct sockaddr_storage ss;
1434 if (!interpret_string_addr(&ss, saf_servername,
1436 return NT_STATUS_UNSUCCESSFUL;
1438 if (dcip_to_name(mem_ctx, domain, &ss, saf_name )) {
1439 fstrcpy( domain->dcname, saf_name );
1441 winbind_add_failed_connection_entry(
1442 domain, saf_servername,
1443 NT_STATUS_UNSUCCESSFUL);
1446 fstrcpy( domain->dcname, saf_servername );
1449 SAFE_FREE( saf_servername );
1452 for (retries = 0; retries < 3; retries++) {
1456 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1458 DEBUG(10,("cm_open_connection: dcname is '%s' for domain %s\n",
1459 domain->dcname, domain->name ));
1462 && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, domain->dcname))
1463 && (resolve_name(domain->dcname, &domain->dcaddr, 0x20)))
1465 struct sockaddr_storage *addrs = NULL;
1469 if (!add_sockaddr_to_array(mem_ctx, &domain->dcaddr, 445, &addrs, &num_addrs)) {
1470 set_domain_offline(domain);
1471 talloc_destroy(mem_ctx);
1472 return NT_STATUS_NO_MEMORY;
1474 if (!add_sockaddr_to_array(mem_ctx, &domain->dcaddr, 139, &addrs, &num_addrs)) {
1475 set_domain_offline(domain);
1476 talloc_destroy(mem_ctx);
1477 return NT_STATUS_NO_MEMORY;
1480 /* 5 second timeout. */
1481 if (!open_any_socket_out(addrs, num_addrs, 5000, &dummy, &fd)) {
1487 && !find_new_dc(mem_ctx, domain, domain->dcname, &domain->dcaddr, &fd))
1489 /* This is the one place where we will
1490 set the global winbindd offline state
1491 to true, if a "WINBINDD_OFFLINE" entry
1492 is found in the winbindd cache. */
1493 set_global_winbindd_state_offline();
1497 new_conn->cli = NULL;
1499 result = cm_prepare_connection(domain, fd, domain->dcname,
1500 &new_conn->cli, &retry);
1506 if (NT_STATUS_IS_OK(result)) {
1508 winbindd_set_locator_kdc_envs(domain);
1510 if (domain->online == False) {
1511 /* We're changing state from offline to online. */
1512 set_global_winbindd_state_online();
1514 set_domain_online(domain);
1516 /* Ensure we setup the retry handler. */
1517 set_domain_offline(domain);
1520 talloc_destroy(mem_ctx);
1524 /* Close down all open pipes on a connection. */
1526 void invalidate_cm_connection(struct winbindd_cm_conn *conn)
1528 /* We're closing down a possibly dead
1529 connection. Don't have impossibly long (10s) timeouts. */
1532 cli_set_timeout(conn->cli, 1000); /* 1 second. */
1535 if (conn->samr_pipe != NULL) {
1536 TALLOC_FREE(conn->samr_pipe);
1537 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1539 cli_set_timeout(conn->cli, 500);
1543 if (conn->lsa_pipe != NULL) {
1544 TALLOC_FREE(conn->lsa_pipe);
1545 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1547 cli_set_timeout(conn->cli, 500);
1551 if (conn->lsa_pipe_tcp != NULL) {
1552 TALLOC_FREE(conn->lsa_pipe_tcp);
1553 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1555 cli_set_timeout(conn->cli, 500);
1559 if (conn->netlogon_pipe != NULL) {
1560 TALLOC_FREE(conn->netlogon_pipe);
1561 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1563 cli_set_timeout(conn->cli, 500);
1568 cli_shutdown(conn->cli);
1574 void close_conns_after_fork(void)
1576 struct winbindd_domain *domain;
1578 for (domain = domain_list(); domain; domain = domain->next) {
1579 if (domain->conn.cli == NULL)
1582 if (domain->conn.cli->fd == -1)
1585 close(domain->conn.cli->fd);
1586 domain->conn.cli->fd = -1;
1590 static bool connection_ok(struct winbindd_domain *domain)
1594 ok = cli_state_is_connected(domain->conn.cli);
1596 DEBUG(3, ("connection_ok: Connection to %s for domain %s is not connected\n",
1597 domain->dcname, domain->name));
1601 if (domain->online == False) {
1602 DEBUG(3, ("connection_ok: Domain %s is offline\n", domain->name));
1609 /* Initialize a new connection up to the RPC BIND.
1610 Bypass online status check so always does network calls. */
1612 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain)
1616 /* Internal connections never use the network. */
1617 if (domain->internal || !winbindd_can_contact_domain(domain)) {
1618 domain->initialized = True;
1619 return NT_STATUS_OK;
1622 if (connection_ok(domain)) {
1623 if (!domain->initialized) {
1624 set_dc_type_and_flags(domain);
1626 return NT_STATUS_OK;
1629 invalidate_cm_connection(&domain->conn);
1631 result = cm_open_connection(domain, &domain->conn);
1633 if (NT_STATUS_IS_OK(result) && !domain->initialized) {
1634 set_dc_type_and_flags(domain);
1640 NTSTATUS init_dc_connection(struct winbindd_domain *domain)
1642 if (domain->initialized && !domain->online) {
1643 /* We check for online status elsewhere. */
1644 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1647 return init_dc_connection_network(domain);
1650 /******************************************************************************
1651 Set the trust flags (direction and forest location) for a domain
1652 ******************************************************************************/
1654 static bool set_dc_type_and_flags_trustinfo( struct winbindd_domain *domain )
1656 struct winbindd_domain *our_domain;
1657 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1658 struct netr_DomainTrustList trusts;
1660 uint32 flags = (NETR_TRUST_FLAG_IN_FOREST |
1661 NETR_TRUST_FLAG_OUTBOUND |
1662 NETR_TRUST_FLAG_INBOUND);
1663 struct rpc_pipe_client *cli;
1664 TALLOC_CTX *mem_ctx = NULL;
1666 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s\n", domain->name ));
1668 /* Our primary domain doesn't need to worry about trust flags.
1669 Force it to go through the network setup */
1670 if ( domain->primary ) {
1674 our_domain = find_our_domain();
1676 if ( !connection_ok(our_domain) ) {
1677 DEBUG(3,("set_dc_type_and_flags_trustinfo: No connection to our domain!\n"));
1681 /* This won't work unless our domain is AD */
1683 if ( !our_domain->active_directory ) {
1687 /* Use DsEnumerateDomainTrusts to get us the trust direction
1690 result = cm_connect_netlogon(our_domain, &cli);
1692 if (!NT_STATUS_IS_OK(result)) {
1693 DEBUG(5, ("set_dc_type_and_flags_trustinfo: Could not open "
1694 "a connection to %s for PIPE_NETLOGON (%s)\n",
1695 domain->name, nt_errstr(result)));
1699 if ( (mem_ctx = talloc_init("set_dc_type_and_flags_trustinfo")) == NULL ) {
1700 DEBUG(0,("set_dc_type_and_flags_trustinfo: talloc_init() failed!\n"));
1704 result = rpccli_netr_DsrEnumerateDomainTrusts(cli, mem_ctx,
1709 if (!NT_STATUS_IS_OK(result)) {
1710 DEBUG(0,("set_dc_type_and_flags_trustinfo: "
1711 "failed to query trusted domain list: %s\n",
1712 nt_errstr(result)));
1713 talloc_destroy(mem_ctx);
1717 /* Now find the domain name and get the flags */
1719 for ( i=0; i<trusts.count; i++ ) {
1720 if ( strequal( domain->name, trusts.array[i].netbios_name) ) {
1721 domain->domain_flags = trusts.array[i].trust_flags;
1722 domain->domain_type = trusts.array[i].trust_type;
1723 domain->domain_trust_attribs = trusts.array[i].trust_attributes;
1725 if ( domain->domain_type == NETR_TRUST_TYPE_UPLEVEL )
1726 domain->active_directory = True;
1728 /* This flag is only set if the domain is *our*
1729 primary domain and the primary domain is in
1732 domain->native_mode = (domain->domain_flags & NETR_TRUST_FLAG_NATIVE);
1734 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s is %sin "
1735 "native mode.\n", domain->name,
1736 domain->native_mode ? "" : "NOT "));
1738 DEBUG(5,("set_dc_type_and_flags_trustinfo: domain %s is %s"
1739 "running active directory.\n", domain->name,
1740 domain->active_directory ? "" : "NOT "));
1743 domain->initialized = True;
1749 talloc_destroy( mem_ctx );
1751 return domain->initialized;
1754 /******************************************************************************
1755 We can 'sense' certain things about the DC by it's replies to certain
1758 This tells us if this particular remote server is Active Directory, and if it
1760 ******************************************************************************/
1762 static void set_dc_type_and_flags_connect( struct winbindd_domain *domain )
1766 TALLOC_CTX *mem_ctx = NULL;
1767 struct rpc_pipe_client *cli = NULL;
1768 struct policy_handle pol;
1769 union dssetup_DsRoleInfo info;
1770 union lsa_PolicyInformation *lsa_info = NULL;
1772 if (!connection_ok(domain)) {
1776 mem_ctx = talloc_init("set_dc_type_and_flags on domain %s\n",
1779 DEBUG(1, ("set_dc_type_and_flags_connect: talloc_init() failed\n"));
1783 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s\n", domain->name ));
1785 result = cli_rpc_pipe_open_noauth(domain->conn.cli,
1786 &ndr_table_dssetup.syntax_id,
1789 if (!NT_STATUS_IS_OK(result)) {
1790 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1791 "PI_DSSETUP on domain %s: (%s)\n",
1792 domain->name, nt_errstr(result)));
1794 /* if this is just a non-AD domain we need to continue
1795 * identifying so that we can in the end return with
1796 * domain->initialized = True - gd */
1801 result = rpccli_dssetup_DsRoleGetPrimaryDomainInformation(cli, mem_ctx,
1802 DS_ROLE_BASIC_INFORMATION,
1807 if (!NT_STATUS_IS_OK(result)) {
1808 DEBUG(5, ("set_dc_type_and_flags_connect: rpccli_ds_getprimarydominfo "
1809 "on domain %s failed: (%s)\n",
1810 domain->name, nt_errstr(result)));
1812 /* older samba3 DCs will return DCERPC_FAULT_OP_RNG_ERROR for
1813 * every opcode on the DSSETUP pipe, continue with
1814 * no_dssetup mode here as well to get domain->initialized
1817 if (NT_STATUS_V(result) == DCERPC_FAULT_OP_RNG_ERROR) {
1821 TALLOC_FREE(mem_ctx);
1825 if ((info.basic.flags & DS_ROLE_PRIMARY_DS_RUNNING) &&
1826 !(info.basic.flags & DS_ROLE_PRIMARY_DS_MIXED_MODE)) {
1827 domain->native_mode = True;
1829 domain->native_mode = False;
1833 result = cli_rpc_pipe_open_noauth(domain->conn.cli,
1834 &ndr_table_lsarpc.syntax_id, &cli);
1836 if (!NT_STATUS_IS_OK(result)) {
1837 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1838 "PI_LSARPC on domain %s: (%s)\n",
1839 domain->name, nt_errstr(result)));
1841 TALLOC_FREE(mem_ctx);
1845 result = rpccli_lsa_open_policy2(cli, mem_ctx, True,
1846 SEC_FLAG_MAXIMUM_ALLOWED, &pol);
1848 if (NT_STATUS_IS_OK(result)) {
1849 /* This particular query is exactly what Win2k clients use
1850 to determine that the DC is active directory */
1851 result = rpccli_lsa_QueryInfoPolicy2(cli, mem_ctx,
1853 LSA_POLICY_INFO_DNS,
1857 if (NT_STATUS_IS_OK(result)) {
1858 domain->active_directory = True;
1860 if (lsa_info->dns.name.string) {
1861 fstrcpy(domain->name, lsa_info->dns.name.string);
1864 if (lsa_info->dns.dns_domain.string) {
1865 fstrcpy(domain->alt_name,
1866 lsa_info->dns.dns_domain.string);
1869 /* See if we can set some domain trust flags about
1872 if (lsa_info->dns.dns_forest.string) {
1873 fstrcpy(domain->forest_name,
1874 lsa_info->dns.dns_forest.string);
1876 if (strequal(domain->forest_name, domain->alt_name)) {
1877 domain->domain_flags |= NETR_TRUST_FLAG_TREEROOT;
1881 if (lsa_info->dns.sid) {
1882 sid_copy(&domain->sid, lsa_info->dns.sid);
1885 domain->active_directory = False;
1887 result = rpccli_lsa_open_policy(cli, mem_ctx, True,
1888 SEC_FLAG_MAXIMUM_ALLOWED,
1891 if (!NT_STATUS_IS_OK(result)) {
1895 result = rpccli_lsa_QueryInfoPolicy(cli, mem_ctx,
1897 LSA_POLICY_INFO_ACCOUNT_DOMAIN,
1900 if (NT_STATUS_IS_OK(result)) {
1902 if (lsa_info->account_domain.name.string) {
1903 fstrcpy(domain->name,
1904 lsa_info->account_domain.name.string);
1907 if (lsa_info->account_domain.sid) {
1908 sid_copy(&domain->sid, lsa_info->account_domain.sid);
1914 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s is %sin native mode.\n",
1915 domain->name, domain->native_mode ? "" : "NOT "));
1917 DEBUG(5,("set_dc_type_and_flags_connect: domain %s is %srunning active directory.\n",
1918 domain->name, domain->active_directory ? "" : "NOT "));
1920 domain->can_do_ncacn_ip_tcp = domain->active_directory;
1924 TALLOC_FREE(mem_ctx);
1926 domain->initialized = True;
1929 /**********************************************************************
1930 Set the domain_flags (trust attributes, domain operating modes, etc...
1931 ***********************************************************************/
1933 static void set_dc_type_and_flags( struct winbindd_domain *domain )
1935 /* we always have to contact our primary domain */
1937 if ( domain->primary ) {
1938 DEBUG(10,("set_dc_type_and_flags: setting up flags for "
1939 "primary domain\n"));
1940 set_dc_type_and_flags_connect( domain );
1944 /* Use our DC to get the information if possible */
1946 if ( !set_dc_type_and_flags_trustinfo( domain ) ) {
1947 /* Otherwise, fallback to contacting the
1949 set_dc_type_and_flags_connect( domain );
1957 /**********************************************************************
1958 ***********************************************************************/
1960 static bool cm_get_schannel_dcinfo(struct winbindd_domain *domain,
1961 struct dcinfo **ppdc)
1964 struct rpc_pipe_client *netlogon_pipe;
1966 if (lp_client_schannel() == False) {
1970 result = cm_connect_netlogon(domain, &netlogon_pipe);
1971 if (!NT_STATUS_IS_OK(result)) {
1975 /* Return a pointer to the struct dcinfo from the
1978 if (!domain->conn.netlogon_pipe->dc) {
1982 *ppdc = domain->conn.netlogon_pipe->dc;
1986 NTSTATUS cm_connect_sam(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
1987 struct rpc_pipe_client **cli, struct policy_handle *sam_handle)
1989 struct winbindd_cm_conn *conn;
1990 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1991 struct dcinfo *p_dcinfo;
1992 char *machine_password = NULL;
1993 char *machine_account = NULL;
1994 char *domain_name = NULL;
1996 result = init_dc_connection(domain);
1997 if (!NT_STATUS_IS_OK(result)) {
2001 conn = &domain->conn;
2003 if (rpccli_is_connected(conn->samr_pipe)) {
2007 TALLOC_FREE(conn->samr_pipe);
2010 * No SAMR pipe yet. Attempt to get an NTLMSSP SPNEGO authenticated
2011 * sign and sealed pipe using the machine account password by
2012 * preference. If we can't - try schannel, if that fails, try
2016 if ((conn->cli->user_name[0] == '\0') ||
2017 (conn->cli->domain[0] == '\0') ||
2018 (conn->cli->password == NULL || conn->cli->password[0] == '\0'))
2020 result = get_trust_creds(domain, &machine_password,
2021 &machine_account, NULL);
2022 if (!NT_STATUS_IS_OK(result)) {
2023 DEBUG(10, ("cm_connect_sam: No no user available for "
2024 "domain %s, trying schannel\n", conn->cli->domain));
2027 domain_name = domain->name;
2029 machine_password = SMB_STRDUP(conn->cli->password);
2030 machine_account = SMB_STRDUP(conn->cli->user_name);
2031 domain_name = conn->cli->domain;
2034 if (!machine_password || !machine_account) {
2035 result = NT_STATUS_NO_MEMORY;
2039 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2040 authenticated SAMR pipe with sign & seal. */
2041 result = cli_rpc_pipe_open_spnego_ntlmssp(conn->cli,
2042 &ndr_table_samr.syntax_id,
2044 PIPE_AUTH_LEVEL_PRIVACY,
2050 if (!NT_STATUS_IS_OK(result)) {
2051 DEBUG(10,("cm_connect_sam: failed to connect to SAMR "
2052 "pipe for domain %s using NTLMSSP "
2053 "authenticated pipe: user %s\\%s. Error was "
2054 "%s\n", domain->name, domain_name,
2055 machine_account, nt_errstr(result)));
2059 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for "
2060 "domain %s using NTLMSSP authenticated "
2061 "pipe: user %s\\%s\n", domain->name,
2062 domain_name, machine_account));
2064 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2065 conn->samr_pipe->desthost,
2066 SEC_FLAG_MAXIMUM_ALLOWED,
2067 &conn->sam_connect_handle);
2068 if (NT_STATUS_IS_OK(result)) {
2071 DEBUG(10,("cm_connect_sam: ntlmssp-sealed rpccli_samr_Connect2 "
2072 "failed for domain %s, error was %s. Trying schannel\n",
2073 domain->name, nt_errstr(result) ));
2074 TALLOC_FREE(conn->samr_pipe);
2078 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2080 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
2081 /* If this call fails - conn->cli can now be NULL ! */
2082 DEBUG(10, ("cm_connect_sam: Could not get schannel auth info "
2083 "for domain %s, trying anon\n", domain->name));
2086 result = cli_rpc_pipe_open_schannel_with_key
2087 (conn->cli, &ndr_table_samr.syntax_id, NCACN_NP,
2088 PIPE_AUTH_LEVEL_PRIVACY,
2089 domain->name, p_dcinfo, &conn->samr_pipe);
2091 if (!NT_STATUS_IS_OK(result)) {
2092 DEBUG(10,("cm_connect_sam: failed to connect to SAMR pipe for "
2093 "domain %s using schannel. Error was %s\n",
2094 domain->name, nt_errstr(result) ));
2097 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for domain %s using "
2098 "schannel.\n", domain->name ));
2100 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2101 conn->samr_pipe->desthost,
2102 SEC_FLAG_MAXIMUM_ALLOWED,
2103 &conn->sam_connect_handle);
2104 if (NT_STATUS_IS_OK(result)) {
2107 DEBUG(10,("cm_connect_sam: schannel-sealed rpccli_samr_Connect2 failed "
2108 "for domain %s, error was %s. Trying anonymous\n",
2109 domain->name, nt_errstr(result) ));
2110 TALLOC_FREE(conn->samr_pipe);
2114 /* Finally fall back to anonymous. */
2115 result = cli_rpc_pipe_open_noauth(conn->cli, &ndr_table_samr.syntax_id,
2118 if (!NT_STATUS_IS_OK(result)) {
2122 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2123 conn->samr_pipe->desthost,
2124 SEC_FLAG_MAXIMUM_ALLOWED,
2125 &conn->sam_connect_handle);
2126 if (!NT_STATUS_IS_OK(result)) {
2127 DEBUG(10,("cm_connect_sam: rpccli_samr_Connect2 failed "
2128 "for domain %s Error was %s\n",
2129 domain->name, nt_errstr(result) ));
2134 result = rpccli_samr_OpenDomain(conn->samr_pipe,
2136 &conn->sam_connect_handle,
2137 SEC_FLAG_MAXIMUM_ALLOWED,
2139 &conn->sam_domain_handle);
2143 if (NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED)) {
2145 * if we got access denied, we might just have no access rights
2146 * to talk to the remote samr server server (e.g. when we are a
2147 * PDC and we are connecting a w2k8 pdc via an interdomain
2148 * trust). In that case do not invalidate the whole connection
2151 TALLOC_FREE(conn->samr_pipe);
2152 ZERO_STRUCT(conn->sam_domain_handle);
2154 } else if (!NT_STATUS_IS_OK(result)) {
2155 invalidate_cm_connection(conn);
2159 *cli = conn->samr_pipe;
2160 *sam_handle = conn->sam_domain_handle;
2161 SAFE_FREE(machine_password);
2162 SAFE_FREE(machine_account);
2166 /**********************************************************************
2167 open an schanneld ncacn_ip_tcp connection to LSA
2168 ***********************************************************************/
2170 NTSTATUS cm_connect_lsa_tcp(struct winbindd_domain *domain,
2171 TALLOC_CTX *mem_ctx,
2172 struct rpc_pipe_client **cli)
2174 struct winbindd_cm_conn *conn;
2177 DEBUG(10,("cm_connect_lsa_tcp\n"));
2179 status = init_dc_connection(domain);
2180 if (!NT_STATUS_IS_OK(status)) {
2184 conn = &domain->conn;
2186 if (conn->lsa_pipe_tcp &&
2187 conn->lsa_pipe_tcp->transport->transport == NCACN_IP_TCP &&
2188 conn->lsa_pipe_tcp->auth->auth_level == PIPE_AUTH_LEVEL_PRIVACY &&
2189 rpccli_is_connected(conn->lsa_pipe_tcp)) {
2193 TALLOC_FREE(conn->lsa_pipe_tcp);
2195 status = cli_rpc_pipe_open_schannel(conn->cli,
2196 &ndr_table_lsarpc.syntax_id,
2198 PIPE_AUTH_LEVEL_PRIVACY,
2200 &conn->lsa_pipe_tcp);
2201 if (!NT_STATUS_IS_OK(status)) {
2202 DEBUG(10,("cli_rpc_pipe_open_schannel failed: %s\n",
2203 nt_errstr(status)));
2208 if (!NT_STATUS_IS_OK(status)) {
2209 TALLOC_FREE(conn->lsa_pipe_tcp);
2213 *cli = conn->lsa_pipe_tcp;
2218 NTSTATUS cm_connect_lsa(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2219 struct rpc_pipe_client **cli, struct policy_handle *lsa_policy)
2221 struct winbindd_cm_conn *conn;
2222 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2223 struct dcinfo *p_dcinfo;
2225 result = init_dc_connection(domain);
2226 if (!NT_STATUS_IS_OK(result))
2229 conn = &domain->conn;
2231 if (rpccli_is_connected(conn->lsa_pipe)) {
2235 TALLOC_FREE(conn->lsa_pipe);
2237 if ((conn->cli->user_name[0] == '\0') ||
2238 (conn->cli->domain[0] == '\0') ||
2239 (conn->cli->password == NULL || conn->cli->password[0] == '\0')) {
2240 DEBUG(10, ("cm_connect_lsa: No no user available for "
2241 "domain %s, trying schannel\n", conn->cli->domain));
2245 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2246 * authenticated LSA pipe with sign & seal. */
2247 result = cli_rpc_pipe_open_spnego_ntlmssp
2248 (conn->cli, &ndr_table_lsarpc.syntax_id, NCACN_NP,
2249 PIPE_AUTH_LEVEL_PRIVACY,
2250 conn->cli->domain, conn->cli->user_name, conn->cli->password,
2253 if (!NT_STATUS_IS_OK(result)) {
2254 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2255 "domain %s using NTLMSSP authenticated pipe: user "
2256 "%s\\%s. Error was %s. Trying schannel.\n",
2257 domain->name, conn->cli->domain,
2258 conn->cli->user_name, nt_errstr(result)));
2262 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2263 "NTLMSSP authenticated pipe: user %s\\%s\n",
2264 domain->name, conn->cli->domain, conn->cli->user_name ));
2266 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2267 SEC_FLAG_MAXIMUM_ALLOWED,
2269 if (NT_STATUS_IS_OK(result)) {
2273 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2276 TALLOC_FREE(conn->lsa_pipe);
2280 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2282 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
2283 /* If this call fails - conn->cli can now be NULL ! */
2284 DEBUG(10, ("cm_connect_lsa: Could not get schannel auth info "
2285 "for domain %s, trying anon\n", domain->name));
2288 result = cli_rpc_pipe_open_schannel_with_key
2289 (conn->cli, &ndr_table_lsarpc.syntax_id, NCACN_NP,
2290 PIPE_AUTH_LEVEL_PRIVACY,
2291 domain->name, p_dcinfo, &conn->lsa_pipe);
2293 if (!NT_STATUS_IS_OK(result)) {
2294 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2295 "domain %s using schannel. Error was %s\n",
2296 domain->name, nt_errstr(result) ));
2299 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2300 "schannel.\n", domain->name ));
2302 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2303 SEC_FLAG_MAXIMUM_ALLOWED,
2305 if (NT_STATUS_IS_OK(result)) {
2309 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2312 TALLOC_FREE(conn->lsa_pipe);
2316 result = cli_rpc_pipe_open_noauth(conn->cli,
2317 &ndr_table_lsarpc.syntax_id,
2319 if (!NT_STATUS_IS_OK(result)) {
2320 result = NT_STATUS_PIPE_NOT_AVAILABLE;
2324 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2325 SEC_FLAG_MAXIMUM_ALLOWED,
2328 if (!NT_STATUS_IS_OK(result)) {
2329 invalidate_cm_connection(conn);
2333 *cli = conn->lsa_pipe;
2334 *lsa_policy = conn->lsa_policy;
2338 /****************************************************************************
2339 Open the netlogon pipe to this DC. Use schannel if specified in client conf.
2340 session key stored in conn->netlogon_pipe->dc->sess_key.
2341 ****************************************************************************/
2343 NTSTATUS cm_connect_netlogon(struct winbindd_domain *domain,
2344 struct rpc_pipe_client **cli)
2346 struct winbindd_cm_conn *conn;
2349 uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
2351 uint32 sec_chan_type;
2352 const char *account_name;
2353 struct rpc_pipe_client *netlogon_pipe = NULL;
2357 result = init_dc_connection(domain);
2358 if (!NT_STATUS_IS_OK(result)) {
2362 conn = &domain->conn;
2364 if (rpccli_is_connected(conn->netlogon_pipe)) {
2365 *cli = conn->netlogon_pipe;
2366 return NT_STATUS_OK;
2369 TALLOC_FREE(conn->netlogon_pipe);
2371 result = cli_rpc_pipe_open_noauth(conn->cli,
2372 &ndr_table_netlogon.syntax_id,
2374 if (!NT_STATUS_IS_OK(result)) {
2378 if ((!IS_DC) && (!domain->primary)) {
2379 /* Clear the schannel request bit and drop down */
2380 neg_flags &= ~NETLOGON_NEG_SCHANNEL;
2384 if (lp_client_schannel() != False) {
2385 neg_flags |= NETLOGON_NEG_SCHANNEL;
2388 if (!get_trust_pw_hash(domain->name, mach_pwd, &account_name,
2391 TALLOC_FREE(netlogon_pipe);
2392 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2395 result = rpccli_netlogon_setup_creds(
2397 domain->dcname, /* server name. */
2398 domain->name, /* domain name */
2399 global_myname(), /* client name */
2400 account_name, /* machine account */
2401 mach_pwd, /* machine password */
2402 sec_chan_type, /* from get_trust_pw */
2405 if (!NT_STATUS_IS_OK(result)) {
2406 TALLOC_FREE(netlogon_pipe);
2410 if ((lp_client_schannel() == True) &&
2411 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2412 DEBUG(3, ("Server did not offer schannel\n"));
2413 TALLOC_FREE(netlogon_pipe);
2414 return NT_STATUS_ACCESS_DENIED;
2418 if ((lp_client_schannel() == False) ||
2419 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2421 * NetSamLogonEx only works for schannel
2423 domain->can_do_samlogon_ex = False;
2425 /* We're done - just keep the existing connection to NETLOGON
2427 conn->netlogon_pipe = netlogon_pipe;
2428 *cli = conn->netlogon_pipe;
2429 return NT_STATUS_OK;
2432 /* Using the credentials from the first pipe, open a signed and sealed
2433 second netlogon pipe. The session key is stored in the schannel
2434 part of the new pipe auth struct.
2437 result = cli_rpc_pipe_open_schannel_with_key(
2438 conn->cli, &ndr_table_netlogon.syntax_id, NCACN_NP,
2439 PIPE_AUTH_LEVEL_PRIVACY, domain->name, netlogon_pipe->dc,
2440 &conn->netlogon_pipe);
2442 /* We can now close the initial netlogon pipe. */
2443 TALLOC_FREE(netlogon_pipe);
2445 if (!NT_STATUS_IS_OK(result)) {
2446 DEBUG(3, ("Could not open schannel'ed NETLOGON pipe. Error "
2447 "was %s\n", nt_errstr(result)));
2449 invalidate_cm_connection(conn);
2454 * Try NetSamLogonEx for AD domains
2456 domain->can_do_samlogon_ex = domain->active_directory;
2458 *cli = conn->netlogon_pipe;
2459 return NT_STATUS_OK;