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
63 #include "../libcli/auth/libcli_auth.h"
64 #include "../librpc/gen_ndr/ndr_netlogon_c.h"
65 #include "rpc_client/cli_pipe.h"
66 #include "rpc_client/cli_netlogon.h"
67 #include "../librpc/gen_ndr/ndr_samr_c.h"
68 #include "../librpc/gen_ndr/ndr_lsa_c.h"
69 #include "rpc_client/cli_lsarpc.h"
70 #include "../librpc/gen_ndr/ndr_dssetup_c.h"
71 #include "libads/sitename_cache.h"
72 #include "libsmb/libsmb.h"
73 #include "libsmb/clidgram.h"
76 #include "../libcli/security/security.h"
79 #include "auth/gensec/gensec.h"
80 #include "../libcli/smb/smbXcli_base.h"
81 #include "libcli/auth/netlogon_creds_cli.h"
83 #include "rpc_server/rpc_ncacn_np.h"
84 #include "auth/credentials/credentials.h"
85 #include "lib/param/param.h"
88 #define DBGC_CLASS DBGC_WINBIND
92 struct sockaddr_storage ss;
95 extern struct winbindd_methods reconnect_methods;
96 extern bool override_logfile;
98 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain, bool need_rw_dc);
99 static void set_dc_type_and_flags( struct winbindd_domain *domain );
100 static bool set_dc_type_and_flags_trustinfo( struct winbindd_domain *domain );
101 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
102 struct dc_name_ip **dcs, int *num_dcs);
104 /****************************************************************
105 Child failed to find DC's. Reschedule check.
106 ****************************************************************/
108 static void msg_failed_to_go_online(struct messaging_context *msg,
111 struct server_id server_id,
114 struct winbindd_domain *domain;
115 const char *domainname = (const char *)data->data;
117 if (data->data == NULL || data->length == 0) {
121 DEBUG(5,("msg_fail_to_go_online: received for domain %s.\n", domainname));
123 for (domain = domain_list(); domain; domain = domain->next) {
124 if (domain->internal) {
128 if (strequal(domain->name, domainname)) {
129 if (domain->online) {
130 /* We're already online, ignore. */
131 DEBUG(5,("msg_fail_to_go_online: domain %s "
132 "already online.\n", domainname));
136 /* Reschedule the online check. */
137 set_domain_offline(domain);
143 /****************************************************************
144 Actually cause a reconnect from a message.
145 ****************************************************************/
147 static void msg_try_to_go_online(struct messaging_context *msg,
150 struct server_id server_id,
153 struct winbindd_domain *domain;
154 const char *domainname = (const char *)data->data;
156 if (data->data == NULL || data->length == 0) {
160 DEBUG(5,("msg_try_to_go_online: received for domain %s.\n", domainname));
162 for (domain = domain_list(); domain; domain = domain->next) {
163 if (domain->internal) {
167 if (strequal(domain->name, domainname)) {
169 if (domain->online) {
170 /* We're already online, ignore. */
171 DEBUG(5,("msg_try_to_go_online: domain %s "
172 "already online.\n", domainname));
176 /* This call takes care of setting the online
177 flag to true if we connected, or re-adding
178 the offline handler if false. Bypasses online
179 check so always does network calls. */
181 init_dc_connection_network(domain, true);
187 /****************************************************************
188 Fork a child to try and contact a DC. Do this as contacting a
189 DC requires blocking lookups and we don't want to block our
191 ****************************************************************/
193 static bool fork_child_dc_connect(struct winbindd_domain *domain)
195 struct dc_name_ip *dcs = NULL;
197 TALLOC_CTX *mem_ctx = NULL;
198 pid_t parent_pid = getpid();
202 if (domain->dc_probe_pid != (pid_t)-1) {
204 * We might already have a DC probe
205 * child working, check.
207 if (process_exists_by_pid(domain->dc_probe_pid)) {
208 DEBUG(10,("fork_child_dc_connect: pid %u already "
209 "checking for DC's.\n",
210 (unsigned int)domain->dc_probe_pid));
213 domain->dc_probe_pid = (pid_t)-1;
216 domain->dc_probe_pid = fork();
218 if (domain->dc_probe_pid == (pid_t)-1) {
219 DEBUG(0, ("fork_child_dc_connect: Could not fork: %s\n", strerror(errno)));
223 if (domain->dc_probe_pid != (pid_t)0) {
225 messaging_register(winbind_messaging_context(), NULL,
226 MSG_WINBIND_TRY_TO_GO_ONLINE,
227 msg_try_to_go_online);
228 messaging_register(winbind_messaging_context(), NULL,
229 MSG_WINBIND_FAILED_TO_GO_ONLINE,
230 msg_failed_to_go_online);
236 /* Leave messages blocked - we will never process one. */
238 if (!override_logfile) {
239 if (asprintf(&lfile, "%s/log.winbindd-dc-connect", get_dyn_LOGFILEBASE()) == -1) {
240 DEBUG(0, ("fork_child_dc_connect: out of memory.\n"));
245 status = winbindd_reinit_after_fork(NULL, lfile);
246 if (!NT_STATUS_IS_OK(status)) {
247 DEBUG(1, ("winbindd_reinit_after_fork failed: %s\n",
249 messaging_send_buf(winbind_messaging_context(),
250 pid_to_procid(parent_pid),
251 MSG_WINBIND_FAILED_TO_GO_ONLINE,
252 (const uint8_t *)domain->name,
253 strlen(domain->name)+1);
258 mem_ctx = talloc_init("fork_child_dc_connect");
260 DEBUG(0,("talloc_init failed.\n"));
261 messaging_send_buf(winbind_messaging_context(),
262 pid_to_procid(parent_pid),
263 MSG_WINBIND_FAILED_TO_GO_ONLINE,
264 (const uint8_t *)domain->name,
265 strlen(domain->name)+1);
269 if ((!get_dcs(mem_ctx, domain, &dcs, &num_dcs)) || (num_dcs == 0)) {
270 /* Still offline ? Can't find DC's. */
271 messaging_send_buf(winbind_messaging_context(),
272 pid_to_procid(parent_pid),
273 MSG_WINBIND_FAILED_TO_GO_ONLINE,
274 (const uint8_t *)domain->name,
275 strlen(domain->name)+1);
279 /* We got a DC. Send a message to our parent to get it to
280 try and do the same. */
282 messaging_send_buf(winbind_messaging_context(),
283 pid_to_procid(parent_pid),
284 MSG_WINBIND_TRY_TO_GO_ONLINE,
285 (const uint8_t *)domain->name,
286 strlen(domain->name)+1);
290 /****************************************************************
291 Handler triggered if we're offline to try and detect a DC.
292 ****************************************************************/
294 static void check_domain_online_handler(struct tevent_context *ctx,
295 struct tevent_timer *te,
299 struct winbindd_domain *domain =
300 (struct winbindd_domain *)private_data;
302 DEBUG(10,("check_domain_online_handler: called for domain "
303 "%s (online = %s)\n", domain->name,
304 domain->online ? "True" : "False" ));
306 TALLOC_FREE(domain->check_online_event);
308 /* Are we still in "startup" mode ? */
310 if (domain->startup && (time_mono(NULL) > domain->startup_time + 30)) {
311 /* No longer in "startup" mode. */
312 DEBUG(10,("check_domain_online_handler: domain %s no longer in 'startup' mode.\n",
314 domain->startup = False;
317 /* We've been told to stay offline, so stay
320 if (get_global_winbindd_state_offline()) {
321 DEBUG(10,("check_domain_online_handler: domain %s remaining globally offline\n",
326 /* Fork a child to test if it can contact a DC.
327 If it can then send ourselves a message to
328 cause a reconnect. */
330 fork_child_dc_connect(domain);
333 /****************************************************************
334 If we're still offline setup the timeout check.
335 ****************************************************************/
337 static void calc_new_online_timeout_check(struct winbindd_domain *domain)
339 int wbr = lp_winbind_reconnect_delay();
341 if (domain->startup) {
342 domain->check_online_timeout = 10;
343 } else if (domain->check_online_timeout < wbr) {
344 domain->check_online_timeout = wbr;
348 void winbind_msg_domain_offline(struct messaging_context *msg_ctx,
351 struct server_id server_id,
354 const char *domain_name = (const char *)data->data;
355 struct winbindd_domain *domain;
357 domain = find_domain_from_name_noinit(domain_name);
358 if (domain == NULL) {
362 domain->online = false;
364 DEBUG(10, ("Domain %s is marked as offline now.\n",
368 void winbind_msg_domain_online(struct messaging_context *msg_ctx,
371 struct server_id server_id,
374 const char *domain_name = (const char *)data->data;
375 struct winbindd_domain *domain;
377 domain = find_domain_from_name_noinit(domain_name);
378 if (domain == NULL) {
382 domain->online = true;
384 DEBUG(10, ("Domain %s is marked as online now.\n",
388 /****************************************************************
389 Set domain offline and also add handler to put us back online
391 ****************************************************************/
393 void set_domain_offline(struct winbindd_domain *domain)
395 pid_t parent_pid = getppid();
397 DEBUG(10,("set_domain_offline: called for domain %s\n",
400 TALLOC_FREE(domain->check_online_event);
402 if (domain->internal) {
403 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
408 domain->online = False;
410 /* Offline domains are always initialized. They're
411 re-initialized when they go back online. */
413 domain->initialized = True;
415 /* We only add the timeout handler that checks and
416 allows us to go back online when we've not
417 been told to remain offline. */
419 if (get_global_winbindd_state_offline()) {
420 DEBUG(10,("set_domain_offline: domain %s remaining globally offline\n",
425 /* If we're in startup mode, check again in 10 seconds, not in
426 lp_winbind_reconnect_delay() seconds (which is 30 seconds by default). */
428 calc_new_online_timeout_check(domain);
430 domain->check_online_event = tevent_add_timer(winbind_event_context(),
432 timeval_current_ofs(domain->check_online_timeout,0),
433 check_domain_online_handler,
436 /* The above *has* to succeed for winbindd to work. */
437 if (!domain->check_online_event) {
438 smb_panic("set_domain_offline: failed to add online handler");
441 DEBUG(10,("set_domain_offline: added event handler for domain %s\n",
444 /* Send a message to the parent that the domain is offline. */
445 if (parent_pid > 1 && !domain->internal) {
446 messaging_send_buf(winbind_messaging_context(),
447 pid_to_procid(parent_pid),
448 MSG_WINBIND_DOMAIN_OFFLINE,
449 (uint8 *)domain->name,
450 strlen(domain->name) + 1);
453 /* Send an offline message to the idmap child when our
454 primary domain goes offline */
456 if ( domain->primary ) {
457 struct winbindd_child *idmap = idmap_child();
459 if ( idmap->pid != 0 ) {
460 messaging_send_buf(winbind_messaging_context(),
461 pid_to_procid(idmap->pid),
463 (const uint8_t *)domain->name,
464 strlen(domain->name)+1);
471 /****************************************************************
472 Set domain online - if allowed.
473 ****************************************************************/
475 static void set_domain_online(struct winbindd_domain *domain)
477 pid_t parent_pid = getppid();
479 DEBUG(10,("set_domain_online: called for domain %s\n",
482 if (domain->internal) {
483 DEBUG(3,("set_domain_online: domain %s is internal - logic error.\n",
488 if (get_global_winbindd_state_offline()) {
489 DEBUG(10,("set_domain_online: domain %s remaining globally offline\n",
494 winbindd_set_locator_kdc_envs(domain);
496 /* If we are waiting to get a krb5 ticket, trigger immediately. */
497 ccache_regain_all_now();
499 /* Ok, we're out of any startup mode now... */
500 domain->startup = False;
502 if (domain->online == False) {
503 /* We were offline - now we're online. We default to
504 using the MS-RPC backend if we started offline,
505 and if we're going online for the first time we
506 should really re-initialize the backends and the
507 checks to see if we're talking to an AD or NT domain.
510 domain->initialized = False;
512 /* 'reconnect_methods' is the MS-RPC backend. */
513 if (domain->backend == &reconnect_methods) {
514 domain->backend = NULL;
518 /* Ensure we have no online timeout checks. */
519 domain->check_online_timeout = 0;
520 TALLOC_FREE(domain->check_online_event);
522 /* Ensure we ignore any pending child messages. */
523 messaging_deregister(winbind_messaging_context(),
524 MSG_WINBIND_TRY_TO_GO_ONLINE, NULL);
525 messaging_deregister(winbind_messaging_context(),
526 MSG_WINBIND_FAILED_TO_GO_ONLINE, NULL);
528 domain->online = True;
530 /* Send a message to the parent that the domain is online. */
531 if (parent_pid > 1 && !domain->internal) {
532 messaging_send_buf(winbind_messaging_context(),
533 pid_to_procid(parent_pid),
534 MSG_WINBIND_DOMAIN_ONLINE,
535 (uint8 *)domain->name,
536 strlen(domain->name) + 1);
539 /* Send an online message to the idmap child when our
540 primary domain comes online */
542 if ( domain->primary ) {
543 struct winbindd_child *idmap = idmap_child();
545 if ( idmap->pid != 0 ) {
546 messaging_send_buf(winbind_messaging_context(),
547 pid_to_procid(idmap->pid),
549 (const uint8_t *)domain->name,
550 strlen(domain->name)+1);
557 /****************************************************************
558 Requested to set a domain online.
559 ****************************************************************/
561 void set_domain_online_request(struct winbindd_domain *domain)
565 DEBUG(10,("set_domain_online_request: called for domain %s\n",
568 if (get_global_winbindd_state_offline()) {
569 DEBUG(10,("set_domain_online_request: domain %s remaining globally offline\n",
574 if (domain->internal) {
575 DEBUG(10, ("set_domain_online_request: Internal domains are "
580 /* We've been told it's safe to go online and
581 try and connect to a DC. But I don't believe it
582 because network manager seems to lie.
583 Wait at least 5 seconds. Heuristics suck... */
588 /* Go into "startup" mode again. */
589 domain->startup_time = time_mono(NULL);
590 domain->startup = True;
594 if (!domain->check_online_event) {
595 /* If we've come from being globally offline we
596 don't have a check online event handler set.
597 We need to add one now we're trying to go
600 DEBUG(10,("set_domain_online_request: domain %s was globally offline.\n",
604 TALLOC_FREE(domain->check_online_event);
606 domain->check_online_event = tevent_add_timer(winbind_event_context(),
609 check_domain_online_handler,
612 /* The above *has* to succeed for winbindd to work. */
613 if (!domain->check_online_event) {
614 smb_panic("set_domain_online_request: failed to add online handler");
618 /****************************************************************
619 Add -ve connection cache entries for domain and realm.
620 ****************************************************************/
622 static void winbind_add_failed_connection_entry(
623 const struct winbindd_domain *domain,
627 add_failed_connection_entry(domain->name, server, result);
628 /* If this was the saf name for the last thing we talked to,
630 saf_delete(domain->name);
631 if (domain->alt_name != NULL) {
632 add_failed_connection_entry(domain->alt_name, server, result);
633 saf_delete(domain->alt_name);
635 winbindd_unset_locator_kdc_env(domain);
638 /* Choose between anonymous or authenticated connections. We need to use
639 an authenticated connection if DCs have the RestrictAnonymous registry
640 entry set > 0, or the "Additional restrictions for anonymous
641 connections" set in the win2k Local Security Policy.
643 Caller to free() result in domain, username, password
646 static void cm_get_ipc_userpass(char **username, char **domain, char **password)
648 *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
649 *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
650 *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
652 if (*username && **username) {
654 if (!*domain || !**domain)
655 *domain = smb_xstrdup(lp_workgroup());
657 if (!*password || !**password)
658 *password = smb_xstrdup("");
660 DEBUG(3, ("cm_get_ipc_userpass: Retrieved auth-user from secrets.tdb [%s\\%s]\n",
661 *domain, *username));
664 DEBUG(3, ("cm_get_ipc_userpass: No auth-user defined\n"));
665 *username = smb_xstrdup("");
666 *domain = smb_xstrdup("");
667 *password = smb_xstrdup("");
671 static NTSTATUS cm_get_ipc_credentials(TALLOC_CTX *mem_ctx,
672 struct cli_credentials **_creds)
675 TALLOC_CTX *frame = talloc_stackframe();
676 NTSTATUS status = NT_STATUS_INTERNAL_ERROR;
677 struct loadparm_context *lp_ctx;
678 char *username = NULL;
679 char *netbios_domain = NULL;
680 char *password = NULL;
681 struct cli_credentials *creds = NULL;
684 cm_get_ipc_userpass(&username, &netbios_domain, &password);
686 lp_ctx = loadparm_init_s3(frame, loadparm_s3_helpers());
687 if (lp_ctx == NULL) {
688 DEBUG(1, ("loadparm_init_s3 failed\n"));
689 status = NT_STATUS_INTERNAL_ERROR;
693 creds = cli_credentials_init(mem_ctx);
695 status = NT_STATUS_NO_MEMORY;
699 cli_credentials_set_conf(creds, lp_ctx);
700 cli_credentials_set_kerberos_state(creds, CRED_DONT_USE_KERBEROS);
702 ok = cli_credentials_set_domain(creds, netbios_domain, CRED_SPECIFIED);
704 status = NT_STATUS_NO_MEMORY;
708 ok = cli_credentials_set_username(creds, username, CRED_SPECIFIED);
710 status = NT_STATUS_NO_MEMORY;
714 ok = cli_credentials_set_password(creds, password, CRED_SPECIFIED);
716 status = NT_STATUS_NO_MEMORY;
722 status = NT_STATUS_OK;
726 SAFE_FREE(netbios_domain);
732 static bool cm_is_ipc_credentials(struct cli_credentials *creds)
734 TALLOC_CTX *frame = talloc_stackframe();
735 char *ipc_account = NULL;
736 char *ipc_domain = NULL;
737 char *ipc_password = NULL;
738 const char *creds_account = NULL;
739 const char *creds_domain = NULL;
740 const char *creds_password = NULL;
743 cm_get_ipc_userpass(&ipc_account, &ipc_domain, &ipc_password);
745 creds_account = cli_credentials_get_username(creds);
746 creds_domain = cli_credentials_get_domain(creds);
747 creds_password = cli_credentials_get_password(creds);
749 if (!strequal(ipc_domain, creds_domain)) {
753 if (!strequal(ipc_account, creds_account)) {
757 if (!strcsequal(ipc_password, creds_password)) {
763 SAFE_FREE(ipc_account);
764 SAFE_FREE(ipc_domain);
765 SAFE_FREE(ipc_password);
770 static bool get_dc_name_via_netlogon(struct winbindd_domain *domain,
772 struct sockaddr_storage *dc_ss)
774 struct winbindd_domain *our_domain = NULL;
775 struct rpc_pipe_client *netlogon_pipe = NULL;
779 unsigned int orig_timeout;
780 const char *tmp = NULL;
782 struct dcerpc_binding_handle *b;
784 /* Hmmmm. We can only open one connection to the NETLOGON pipe at the
791 if (domain->primary) {
795 our_domain = find_our_domain();
797 if ((mem_ctx = talloc_init("get_dc_name_via_netlogon")) == NULL) {
801 result = cm_connect_netlogon(our_domain, &netlogon_pipe);
802 if (!NT_STATUS_IS_OK(result)) {
803 talloc_destroy(mem_ctx);
807 b = netlogon_pipe->binding_handle;
809 /* This call can take a long time - allow the server to time out.
810 35 seconds should do it. */
812 orig_timeout = rpccli_set_timeout(netlogon_pipe, 35000);
814 if (our_domain->active_directory) {
815 struct netr_DsRGetDCNameInfo *domain_info = NULL;
817 result = dcerpc_netr_DsRGetDCName(b,
826 if (NT_STATUS_IS_OK(result) && W_ERROR_IS_OK(werr)) {
828 mem_ctx, domain_info->dc_unc);
830 DEBUG(0, ("talloc_strdup failed\n"));
831 talloc_destroy(mem_ctx);
834 if (domain->alt_name == NULL) {
835 domain->alt_name = talloc_strdup(domain,
836 domain_info->domain_name);
837 if (domain->alt_name == NULL) {
838 DEBUG(0, ("talloc_strdup failed\n"));
839 talloc_destroy(mem_ctx);
843 if (domain->forest_name == NULL) {
844 domain->forest_name = talloc_strdup(domain,
845 domain_info->forest_name);
846 if (domain->forest_name == NULL) {
847 DEBUG(0, ("talloc_strdup failed\n"));
848 talloc_destroy(mem_ctx);
854 result = dcerpc_netr_GetAnyDCName(b, mem_ctx,
861 /* And restore our original timeout. */
862 rpccli_set_timeout(netlogon_pipe, orig_timeout);
864 if (!NT_STATUS_IS_OK(result)) {
865 DEBUG(10,("dcerpc_netr_GetAnyDCName failed: %s\n",
867 talloc_destroy(mem_ctx);
871 if (!W_ERROR_IS_OK(werr)) {
872 DEBUG(10,("dcerpc_netr_GetAnyDCName failed: %s\n",
874 talloc_destroy(mem_ctx);
878 /* dcerpc_netr_GetAnyDCName gives us a name with \\ */
879 p = strip_hostname(tmp);
883 talloc_destroy(mem_ctx);
885 DEBUG(10,("dcerpc_netr_GetAnyDCName returned %s\n", dcname));
887 if (!resolve_name(dcname, dc_ss, 0x20, true)) {
895 * Helper function to assemble trust password and account name
897 static NTSTATUS get_trust_credentials(struct winbindd_domain *domain,
900 struct cli_credentials **_creds)
902 const struct winbindd_domain *creds_domain = NULL;
903 struct cli_credentials *creds;
906 /* If we are a DC and this is not our own domain */
908 if (IS_DC && netlogon) {
909 creds_domain = domain;
911 creds_domain = find_our_domain();
912 if (creds_domain == NULL) {
913 return NT_STATUS_INVALID_SERVER_STATE;
917 status = pdb_get_trust_credentials(creds_domain->name,
918 creds_domain->alt_name,
921 if (!NT_STATUS_IS_OK(status)) {
925 if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC) {
926 cli_credentials_set_kerberos_state(creds,
927 CRED_MUST_USE_KERBEROS);
930 if (domain->primary && lp_security() == SEC_ADS) {
931 cli_credentials_set_kerberos_state(creds,
932 CRED_AUTO_USE_KERBEROS);
933 } else if (!domain->active_directory) {
934 cli_credentials_set_kerberos_state(creds,
935 CRED_DONT_USE_KERBEROS);
938 if (creds_domain != domain) {
940 * We can only use schannel against a direct trust
942 cli_credentials_set_secure_channel_type(creds,
951 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
954 status = cm_get_ipc_credentials(mem_ctx, &creds);
955 if (!NT_STATUS_IS_OK(status)) {
963 /************************************************************************
964 Given a fd with a just-connected TCP connection to a DC, open a connection
966 ************************************************************************/
968 static NTSTATUS cm_prepare_connection(struct winbindd_domain *domain,
970 const char *controller,
971 struct cli_state **cli,
974 bool try_ipc_auth = false;
975 const char *machine_password = NULL;
976 const char *machine_krb5_principal = NULL;
977 const char *machine_account = NULL;
978 const char *machine_domain = NULL;
980 struct cli_credentials *creds = NULL;
981 enum credentials_use_kerberos krb5_state;
983 struct named_mutex *mutex;
985 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
987 enum smb_signing_setting smb_sign_client_connections = lp_client_signing();
989 if (smb_sign_client_connections == SMB_SIGNING_DEFAULT) {
991 * If we are connecting to our own AD domain, require
992 * smb signing to disrupt MITM attacks
994 if (domain->primary && lp_security() == SEC_ADS) {
995 smb_sign_client_connections = SMB_SIGNING_REQUIRED;
997 * If we are in or are an AD domain and connecting to another
998 * AD domain in our forest
999 * then require smb signing to disrupt MITM attacks
1001 } else if ((lp_security() == SEC_ADS ||
1002 lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC)
1003 && domain->active_directory
1004 && (domain->domain_trust_attribs
1005 & LSA_TRUST_ATTRIBUTE_WITHIN_FOREST)) {
1006 smb_sign_client_connections = SMB_SIGNING_REQUIRED;
1010 DEBUG(10,("cm_prepare_connection: connecting to DC %s for domain %s\n",
1011 controller, domain->name ));
1015 mutex = grab_named_mutex(talloc_tos(), controller,
1016 WINBIND_SERVER_MUTEX_WAIT_TIME);
1017 if (mutex == NULL) {
1019 DEBUG(0,("cm_prepare_connection: mutex grab failed for %s\n",
1021 result = NT_STATUS_POSSIBLE_DEADLOCK;
1025 flags |= CLI_FULL_CONNECTION_USE_KERBEROS;
1027 *cli = cli_state_create(NULL, sockfd,
1028 controller, domain->alt_name,
1029 smb_sign_client_connections, flags);
1032 DEBUG(1, ("Could not cli_initialize\n"));
1033 result = NT_STATUS_NO_MEMORY;
1037 cli_set_timeout(*cli, 10000); /* 10 seconds */
1039 result = smbXcli_negprot((*cli)->conn, (*cli)->timeout,
1040 lp_client_min_protocol(),
1041 lp_winbindd_max_protocol());
1043 if (!NT_STATUS_IS_OK(result)) {
1044 DEBUG(1, ("cli_negprot failed: %s\n", nt_errstr(result)));
1048 if (smbXcli_conn_protocol((*cli)->conn) >= PROTOCOL_NT1 &&
1049 smb1cli_conn_capabilities((*cli)->conn) & CAP_EXTENDED_SECURITY) {
1050 try_ipc_auth = true;
1051 } else if (smbXcli_conn_protocol((*cli)->conn) >= PROTOCOL_SMB2_02) {
1052 try_ipc_auth = true;
1053 } else if (smb_sign_client_connections == SMB_SIGNING_REQUIRED) {
1055 * If we are forcing on SMB signing, then we must
1056 * require authentication unless this is a one-way
1057 * trust, and we have no stored user/password
1059 try_ipc_auth = true;
1063 result = get_trust_credentials(domain, talloc_tos(), false, &creds);
1064 if (!NT_STATUS_IS_OK(result)) {
1065 DEBUG(1, ("get_trust_credentials(%s) failed: %s\n",
1066 domain->name, nt_errstr(result)));
1071 * Without SPNEGO or NTLMSSP (perhaps via SMB2) we
1072 * would try and authentication with our machine
1073 * account password and fail. This is very rare in
1074 * the modern world however
1076 creds = cli_credentials_init_anon(talloc_tos());
1077 if (creds == NULL) {
1078 result = NT_STATUS_NO_MEMORY;
1079 DEBUG(1, ("cli_credentials_init_anon(%s) failed: %s\n",
1080 domain->name, nt_errstr(result)));
1085 krb5_state = cli_credentials_get_kerberos_state(creds);
1087 machine_krb5_principal = cli_credentials_get_principal(creds,
1089 if (machine_krb5_principal == NULL) {
1090 krb5_state = CRED_DONT_USE_KERBEROS;
1093 machine_account = cli_credentials_get_username(creds);
1094 machine_password = cli_credentials_get_password(creds);
1095 machine_domain = cli_credentials_get_domain(creds);
1097 if (krb5_state != CRED_DONT_USE_KERBEROS) {
1099 /* Try a krb5 session */
1101 (*cli)->use_kerberos = True;
1102 DEBUG(5, ("connecting to %s from %s with kerberos principal "
1103 "[%s] and realm [%s]\n", controller, lp_netbios_name(),
1104 machine_krb5_principal, domain->alt_name));
1106 winbindd_set_locator_kdc_envs(domain);
1108 result = cli_session_setup(*cli,
1109 machine_krb5_principal,
1111 strlen(machine_password)+1,
1113 strlen(machine_password)+1,
1116 if (NT_STATUS_IS_OK(result)) {
1117 if (krb5_state != CRED_MUST_USE_KERBEROS) {
1118 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
1119 result = cli_init_creds(*cli, machine_account, machine_domain, machine_password);
1120 if (!NT_STATUS_IS_OK(result)) {
1124 goto session_setup_done;
1127 DEBUG(4,("failed kerberos session setup with %s\n",
1128 nt_errstr(result)));
1131 if (krb5_state != CRED_MUST_USE_KERBEROS) {
1132 /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the machine account. */
1133 (*cli)->use_kerberos = False;
1135 DEBUG(5, ("connecting to %s from %s using NTLMSSP with username "
1136 "[%s]\\[%s]\n", controller, lp_netbios_name(),
1137 machine_domain, machine_account));
1139 result = cli_session_setup(*cli,
1142 strlen(machine_password)+1,
1144 strlen(machine_password)+1,
1148 if (NT_STATUS_IS_OK(result)) {
1149 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
1150 result = cli_init_creds(*cli, machine_account, machine_domain, machine_password);
1151 if (!NT_STATUS_IS_OK(result)) {
1154 goto session_setup_done;
1158 * If we are not going to validiate the conneciton
1159 * with SMB signing, then allow us to fall back to
1162 if (NT_STATUS_EQUAL(result, NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT)
1163 || NT_STATUS_EQUAL(result, NT_STATUS_TRUSTED_DOMAIN_FAILURE)
1164 || NT_STATUS_EQUAL(result, NT_STATUS_LOGON_FAILURE))
1166 if (cli_credentials_is_anonymous(creds)) {
1170 if (!cm_is_ipc_credentials(creds)) {
1174 if (smb_sign_client_connections == SMB_SIGNING_REQUIRED) {
1181 DEBUG(4, ("authenticated session setup failed with %s\n",
1182 nt_errstr(result)));
1187 result = cm_get_ipc_credentials(talloc_tos(), &creds);
1188 if (!NT_STATUS_IS_OK(result)) {
1192 if (cli_credentials_is_anonymous(creds)) {
1197 machine_account = cli_credentials_get_username(creds);
1198 machine_password = cli_credentials_get_password(creds);
1199 machine_domain = cli_credentials_get_domain(creds);
1201 /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the ipc creds. */
1202 (*cli)->use_kerberos = False;
1204 DEBUG(5, ("connecting to %s from %s using NTLMSSP with username "
1205 "[%s]\\[%s]\n", controller, lp_netbios_name(),
1206 machine_domain, machine_account));
1208 result = cli_session_setup(*cli,
1211 strlen(machine_password)+1,
1213 strlen(machine_password)+1,
1216 if (NT_STATUS_IS_OK(result)) {
1217 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
1218 result = cli_init_creds(*cli, machine_account, machine_domain, machine_password);
1219 if (!NT_STATUS_IS_OK(result)) {
1222 goto session_setup_done;
1226 * If we are not going to validiate the conneciton
1227 * with SMB signing, then allow us to fall back to
1230 if (NT_STATUS_EQUAL(result, NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT)
1231 || NT_STATUS_EQUAL(result, NT_STATUS_TRUSTED_DOMAIN_FAILURE)
1232 || NT_STATUS_EQUAL(result, NT_STATUS_LOGON_FAILURE))
1237 DEBUG(4, ("authenticated session setup failed with %s\n",
1238 nt_errstr(result)));
1244 if (smb_sign_client_connections == SMB_SIGNING_REQUIRED) {
1248 creds = cli_credentials_init_anon(talloc_tos());
1249 if (creds == NULL) {
1250 result = NT_STATUS_NO_MEMORY;
1254 machine_account = cli_credentials_get_username(creds);
1255 machine_password = cli_credentials_get_password(creds);
1256 machine_domain = cli_credentials_get_domain(creds);
1258 /* Fall back to anonymous connection, this might fail later */
1259 DEBUG(10,("cm_prepare_connection: falling back to anonymous "
1260 "connection for DC %s\n",
1263 (*cli)->use_kerberos = False;
1265 result = cli_session_setup(*cli,
1268 strlen(machine_password)+1,
1270 strlen(machine_password)+1,
1273 if (NT_STATUS_IS_OK(result)) {
1274 DEBUG(5, ("Connected anonymously\n"));
1275 result = cli_init_creds(*cli, machine_account, machine_domain, machine_password);
1276 if (!NT_STATUS_IS_OK(result)) {
1279 goto session_setup_done;
1282 /* We can't session setup */
1288 * This should be a short term hack until
1289 * dynamic re-authentication is implemented.
1291 * See Bug 9175 - winbindd doesn't recover from
1292 * NT_STATUS_NETWORK_SESSION_EXPIRED
1294 if (smbXcli_conn_protocol((*cli)->conn) >= PROTOCOL_SMB2_02) {
1295 smbXcli_session_set_disconnect_expired((*cli)->smb2.session);
1298 result = cli_tree_connect(*cli, "IPC$", "IPC", "", 0);
1300 if (!NT_STATUS_IS_OK(result)) {
1301 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(result)));
1305 /* cache the server name for later connections */
1307 saf_store(domain->name, controller);
1308 if (domain->alt_name && (*cli)->use_kerberos) {
1309 saf_store(domain->alt_name, controller);
1312 winbindd_set_locator_kdc_envs(domain);
1317 result = NT_STATUS_OK;
1322 if (!NT_STATUS_IS_OK(result)) {
1323 winbind_add_failed_connection_entry(domain, controller, result);
1324 if ((*cli) != NULL) {
1333 /*******************************************************************
1334 Add a dcname and sockaddr_storage pair to the end of a dc_name_ip
1337 Keeps the list unique by not adding duplicate entries.
1339 @param[in] mem_ctx talloc memory context to allocate from
1340 @param[in] domain_name domain of the DC
1341 @param[in] dcname name of the DC to add to the list
1342 @param[in] pss Internet address and port pair to add to the list
1343 @param[in,out] dcs array of dc_name_ip structures to add to
1344 @param[in,out] num_dcs number of dcs returned in the dcs array
1345 @return true if the list was added to, false otherwise
1346 *******************************************************************/
1348 static bool add_one_dc_unique(TALLOC_CTX *mem_ctx, const char *domain_name,
1349 const char *dcname, struct sockaddr_storage *pss,
1350 struct dc_name_ip **dcs, int *num)
1354 if (!NT_STATUS_IS_OK(check_negative_conn_cache(domain_name, dcname))) {
1355 DEBUG(10, ("DC %s was in the negative conn cache\n", dcname));
1359 /* Make sure there's no duplicates in the list */
1360 for (i=0; i<*num; i++)
1362 (struct sockaddr *)(void *)&(*dcs)[i].ss,
1363 (struct sockaddr *)(void *)pss))
1366 *dcs = talloc_realloc(mem_ctx, *dcs, struct dc_name_ip, (*num)+1);
1371 fstrcpy((*dcs)[*num].name, dcname);
1372 (*dcs)[*num].ss = *pss;
1377 static bool add_sockaddr_to_array(TALLOC_CTX *mem_ctx,
1378 struct sockaddr_storage *pss, uint16 port,
1379 struct sockaddr_storage **addrs, int *num)
1381 *addrs = talloc_realloc(mem_ctx, *addrs, struct sockaddr_storage, (*num)+1);
1383 if (*addrs == NULL) {
1388 (*addrs)[*num] = *pss;
1389 set_sockaddr_port((struct sockaddr *)&(*addrs)[*num], port);
1395 /*******************************************************************
1396 convert an ip to a name
1397 *******************************************************************/
1399 static bool dcip_to_name(TALLOC_CTX *mem_ctx,
1400 const struct winbindd_domain *domain,
1401 struct sockaddr_storage *pss,
1404 struct ip_service ip_list;
1405 uint32_t nt_version = NETLOGON_NT_VERSION_1;
1407 const char *dc_name;
1414 /* For active directory servers, try to get the ldap server name.
1415 None of these failures should be considered critical for now */
1417 if ((lp_security() == SEC_ADS) && (domain->alt_name != NULL)) {
1419 ADS_STATUS ads_status;
1420 char addr[INET6_ADDRSTRLEN];
1422 print_sockaddr(addr, sizeof(addr), pss);
1424 ads = ads_init(domain->alt_name, domain->name, addr);
1425 ads->auth.flags |= ADS_AUTH_NO_BIND;
1427 ads_status = ads_connect(ads);
1428 if (ADS_ERR_OK(ads_status)) {
1429 /* We got a cldap packet. */
1430 *name = talloc_strdup(mem_ctx,
1431 ads->config.ldap_server_name);
1432 if (*name == NULL) {
1435 namecache_store(*name, 0x20, 1, &ip_list);
1437 DEBUG(10,("dcip_to_name: flags = 0x%x\n", (unsigned int)ads->config.flags));
1439 if (domain->primary && (ads->config.flags & NBT_SERVER_KDC)) {
1440 if (ads_closest_dc(ads)) {
1441 char *sitename = sitename_fetch(mem_ctx, ads->config.realm);
1443 /* We're going to use this KDC for this realm/domain.
1444 If we are using sites, then force the krb5 libs
1447 create_local_private_krb5_conf_for_domain(domain->alt_name,
1452 TALLOC_FREE(sitename);
1454 /* use an off site KDC */
1455 create_local_private_krb5_conf_for_domain(domain->alt_name,
1460 winbindd_set_locator_kdc_envs(domain);
1462 /* Ensure we contact this DC also. */
1463 saf_store(domain->name, *name);
1464 saf_store(domain->alt_name, *name);
1467 ads_destroy( &ads );
1471 ads_destroy( &ads );
1476 status = nbt_getdc(winbind_messaging_context(), 10, pss, domain->name,
1477 &domain->sid, nt_version, mem_ctx, &nt_version,
1479 if (NT_STATUS_IS_OK(status)) {
1480 *name = talloc_strdup(mem_ctx, dc_name);
1481 if (*name == NULL) {
1484 namecache_store(*name, 0x20, 1, &ip_list);
1488 /* try node status request */
1490 if (name_status_find(domain->name, 0x1c, 0x20, pss, nbtname) ) {
1491 namecache_store(nbtname, 0x20, 1, &ip_list);
1494 *name = talloc_strdup(mem_ctx, nbtname);
1495 if (*name == NULL) {
1505 /*******************************************************************
1506 Retrieve a list of IP addresses for domain controllers.
1508 The array is sorted in the preferred connection order.
1510 @param[in] mem_ctx talloc memory context to allocate from
1511 @param[in] domain domain to retrieve DCs for
1512 @param[out] dcs array of dcs that will be returned
1513 @param[out] num_dcs number of dcs returned in the dcs array
1515 *******************************************************************/
1517 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
1518 struct dc_name_ip **dcs, int *num_dcs)
1521 struct sockaddr_storage ss;
1522 struct ip_service *ip_list = NULL;
1523 int iplist_size = 0;
1526 enum security_types sec = (enum security_types)lp_security();
1528 is_our_domain = strequal(domain->name, lp_workgroup());
1530 /* If not our domain, get the preferred DC, by asking our primary DC */
1532 && get_dc_name_via_netlogon(domain, dcname, &ss)
1533 && add_one_dc_unique(mem_ctx, domain->name, dcname, &ss, dcs,
1536 char addr[INET6_ADDRSTRLEN];
1537 print_sockaddr(addr, sizeof(addr), &ss);
1538 DEBUG(10, ("Retrieved DC %s at %s via netlogon\n",
1543 if ((sec == SEC_ADS) && (domain->alt_name != NULL)) {
1544 char *sitename = NULL;
1546 /* We need to make sure we know the local site before
1547 doing any DNS queries, as this will restrict the
1548 get_sorted_dc_list() call below to only fetching
1549 DNS records for the correct site. */
1551 /* Find any DC to get the site record.
1552 We deliberately don't care about the
1555 get_dc_name(domain->name, domain->alt_name, dcname, &ss);
1557 sitename = sitename_fetch(mem_ctx, domain->alt_name);
1560 /* Do the site-specific AD dns lookup first. */
1561 get_sorted_dc_list(domain->alt_name, sitename, &ip_list,
1562 &iplist_size, True);
1564 /* Add ips to the DC array. We don't look up the name
1565 of the DC in this function, but we fill in the char*
1566 of the ip now to make the failed connection cache
1568 for ( i=0; i<iplist_size; i++ ) {
1569 char addr[INET6_ADDRSTRLEN];
1570 print_sockaddr(addr, sizeof(addr),
1572 add_one_dc_unique(mem_ctx,
1581 TALLOC_FREE(sitename);
1585 /* Now we add DCs from the main AD DNS lookup. */
1586 get_sorted_dc_list(domain->alt_name, NULL, &ip_list,
1587 &iplist_size, True);
1589 for ( i=0; i<iplist_size; i++ ) {
1590 char addr[INET6_ADDRSTRLEN];
1591 print_sockaddr(addr, sizeof(addr),
1593 add_one_dc_unique(mem_ctx,
1605 /* Try standard netbios queries if no ADS and fall back to DNS queries
1606 * if alt_name is available */
1607 if (*num_dcs == 0) {
1608 get_sorted_dc_list(domain->name, NULL, &ip_list, &iplist_size,
1610 if (iplist_size == 0) {
1611 if (domain->alt_name != NULL) {
1612 get_sorted_dc_list(domain->alt_name, NULL, &ip_list,
1613 &iplist_size, true);
1617 for ( i=0; i<iplist_size; i++ ) {
1618 char addr[INET6_ADDRSTRLEN];
1619 print_sockaddr(addr, sizeof(addr),
1621 add_one_dc_unique(mem_ctx,
1636 /*******************************************************************
1637 Find and make a connection to a DC in the given domain.
1639 @param[in] mem_ctx talloc memory context to allocate from
1640 @param[in] domain domain to find a dc in
1641 @param[out] dcname NetBIOS or FQDN of DC that's connected to
1642 @param[out] pss DC Internet address and port
1643 @param[out] fd fd of the open socket connected to the newly found dc
1644 @return true when a DC connection is made, false otherwise
1645 *******************************************************************/
1647 static bool find_new_dc(TALLOC_CTX *mem_ctx,
1648 struct winbindd_domain *domain,
1649 char **dcname, struct sockaddr_storage *pss, int *fd)
1651 struct dc_name_ip *dcs = NULL;
1654 const char **dcnames = NULL;
1655 int num_dcnames = 0;
1657 struct sockaddr_storage *addrs = NULL;
1668 if (!get_dcs(mem_ctx, domain, &dcs, &num_dcs) || (num_dcs == 0))
1671 for (i=0; i<num_dcs; i++) {
1673 if (!add_string_to_array(mem_ctx, dcs[i].name,
1674 &dcnames, &num_dcnames)) {
1677 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, TCP_SMB_PORT,
1678 &addrs, &num_addrs)) {
1683 if ((num_dcnames == 0) || (num_dcnames != num_addrs))
1686 if ((addrs == NULL) || (dcnames == NULL))
1689 status = smbsock_any_connect(addrs, dcnames, NULL, NULL, NULL,
1690 num_addrs, 0, 10, fd, &fd_index, NULL);
1691 if (!NT_STATUS_IS_OK(status)) {
1692 for (i=0; i<num_dcs; i++) {
1693 char ab[INET6_ADDRSTRLEN];
1694 print_sockaddr(ab, sizeof(ab), &dcs[i].ss);
1695 DEBUG(10, ("find_new_dc: smbsock_any_connect failed for "
1696 "domain %s address %s. Error was %s\n",
1697 domain->name, ab, nt_errstr(status) ));
1698 winbind_add_failed_connection_entry(domain,
1699 dcs[i].name, NT_STATUS_UNSUCCESSFUL);
1704 *pss = addrs[fd_index];
1706 if (*dcnames[fd_index] != '\0' && !is_ipaddress(dcnames[fd_index])) {
1707 /* Ok, we've got a name for the DC */
1708 *dcname = talloc_strdup(mem_ctx, dcnames[fd_index]);
1709 if (*dcname == NULL) {
1715 /* Try to figure out the name */
1716 if (dcip_to_name(mem_ctx, domain, pss, dcname)) {
1720 /* We can not continue without the DC's name */
1721 winbind_add_failed_connection_entry(domain, dcs[fd_index].name,
1722 NT_STATUS_UNSUCCESSFUL);
1724 /* Throw away all arrays as we're doing this again. */
1728 TALLOC_FREE(dcnames);
1740 static char *current_dc_key(TALLOC_CTX *mem_ctx, const char *domain_name)
1742 return talloc_asprintf_strupper_m(mem_ctx, "CURRENT_DCNAME/%s",
1746 static void store_current_dc_in_gencache(const char *domain_name,
1747 const char *dc_name,
1748 struct cli_state *cli)
1750 char addr[INET6_ADDRSTRLEN];
1754 if (!cli_state_is_connected(cli)) {
1758 print_sockaddr(addr, sizeof(addr),
1759 smbXcli_conn_remote_sockaddr(cli->conn));
1761 key = current_dc_key(talloc_tos(), domain_name);
1766 value = talloc_asprintf(talloc_tos(), "%s %s", addr, dc_name);
1767 if (value == NULL) {
1771 gencache_set(key, value, 0x7fffffff);
1777 bool fetch_current_dc_from_gencache(TALLOC_CTX *mem_ctx,
1778 const char *domain_name,
1779 char **p_dc_name, char **p_dc_ip)
1784 char *dc_name = NULL;
1787 key = current_dc_key(talloc_tos(), domain_name);
1791 if (!gencache_get(key, mem_ctx, &value, NULL)) {
1794 p = strchr(value, ' ');
1798 dc_ip = talloc_strndup(mem_ctx, value, p - value);
1799 if (dc_ip == NULL) {
1802 dc_name = talloc_strdup(mem_ctx, p+1);
1803 if (dc_name == NULL) {
1807 if (p_dc_ip != NULL) {
1811 if (p_dc_name != NULL) {
1812 *p_dc_name = dc_name;
1817 TALLOC_FREE(dc_name);
1824 NTSTATUS wb_open_internal_pipe(TALLOC_CTX *mem_ctx,
1825 const struct ndr_interface_table *table,
1826 struct rpc_pipe_client **ret_pipe)
1828 struct rpc_pipe_client *cli = NULL;
1829 const struct auth_session_info *session_info;
1830 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
1833 session_info = get_session_info_system();
1834 SMB_ASSERT(session_info != NULL);
1836 /* create a connection to the specified pipe */
1837 if (lp_parm_bool(-1, "winbindd", "use external pipes", false)) {
1838 status = rpc_pipe_open_interface(mem_ctx,
1842 winbind_messaging_context(),
1845 status = rpc_pipe_open_internal(mem_ctx,
1849 winbind_messaging_context(),
1852 if (!NT_STATUS_IS_OK(status)) {
1853 DEBUG(0, ("open_internal_pipe: Could not connect to %s pipe: %s\n",
1854 table->name, nt_errstr(status)));
1862 return NT_STATUS_OK;
1865 static NTSTATUS cm_open_connection(struct winbindd_domain *domain,
1866 struct winbindd_cm_conn *new_conn)
1868 TALLOC_CTX *mem_ctx;
1870 char *saf_servername;
1873 if ((mem_ctx = talloc_init("cm_open_connection")) == NULL) {
1874 set_domain_offline(domain);
1875 return NT_STATUS_NO_MEMORY;
1878 saf_servername = saf_fetch(mem_ctx, domain->name );
1880 /* we have to check the server affinity cache here since
1881 later we select a DC based on response time and not preference */
1883 /* Check the negative connection cache
1884 before talking to it. It going down may have
1885 triggered the reconnection. */
1887 if ( saf_servername && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, saf_servername))) {
1889 DEBUG(10,("cm_open_connection: saf_servername is '%s' for domain %s\n",
1890 saf_servername, domain->name ));
1892 /* convert an ip address to a name */
1893 if (is_ipaddress( saf_servername ) ) {
1894 char *dcname = NULL;
1895 struct sockaddr_storage ss;
1897 if (!interpret_string_addr(&ss, saf_servername,
1899 TALLOC_FREE(mem_ctx);
1900 return NT_STATUS_UNSUCCESSFUL;
1902 if (dcip_to_name(mem_ctx, domain, &ss, &dcname)) {
1903 domain->dcname = talloc_strdup(domain,
1905 if (domain->dcname == NULL) {
1906 TALLOC_FREE(mem_ctx);
1907 return NT_STATUS_NO_MEMORY;
1910 winbind_add_failed_connection_entry(
1911 domain, saf_servername,
1912 NT_STATUS_UNSUCCESSFUL);
1915 domain->dcname = talloc_strdup(domain, saf_servername);
1916 if (domain->dcname == NULL) {
1917 TALLOC_FREE(mem_ctx);
1918 return NT_STATUS_NO_MEMORY;
1923 for (retries = 0; retries < 3; retries++) {
1926 char *dcname = NULL;
1928 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1930 DEBUG(10,("cm_open_connection: dcname is '%s' for domain %s\n",
1931 domain->dcname ? domain->dcname : "", domain->name ));
1933 if (domain->dcname != NULL
1934 && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, domain->dcname))
1935 && (resolve_name(domain->dcname, &domain->dcaddr, 0x20, true)))
1939 status = smbsock_connect(&domain->dcaddr, 0,
1942 if (!NT_STATUS_IS_OK(status)) {
1948 !find_new_dc(mem_ctx, domain, &dcname, &domain->dcaddr, &fd))
1950 /* This is the one place where we will
1951 set the global winbindd offline state
1952 to true, if a "WINBINDD_OFFLINE" entry
1953 is found in the winbindd cache. */
1954 set_global_winbindd_state_offline();
1957 if (dcname != NULL) {
1958 talloc_free(domain->dcname);
1960 domain->dcname = talloc_move(domain, &dcname);
1961 if (domain->dcname == NULL) {
1962 result = NT_STATUS_NO_MEMORY;
1967 new_conn->cli = NULL;
1969 result = cm_prepare_connection(domain, fd, domain->dcname,
1970 &new_conn->cli, &retry);
1971 if (!NT_STATUS_IS_OK(result)) {
1972 /* Don't leak the smb connection socket */
1980 if (NT_STATUS_IS_OK(result)) {
1981 bool seal_pipes = true;
1983 winbindd_set_locator_kdc_envs(domain);
1985 if (domain->online == False) {
1986 /* We're changing state from offline to online. */
1987 set_global_winbindd_state_online();
1989 set_domain_online(domain);
1992 * Much as I hate global state, this seems to be the point
1993 * where we can be certain that we have a proper connection to
1994 * a DC. wbinfo --dc-info needs that information, store it in
1995 * gencache with a looong timeout. This will need revisiting
1996 * once we start to connect to multiple DCs, wbcDcInfo is
1997 * already prepared for that.
1999 store_current_dc_in_gencache(domain->name, domain->dcname,
2002 seal_pipes = lp_winbind_sealed_pipes();
2003 seal_pipes = lp_parm_bool(-1, "winbind sealed pipes",
2008 new_conn->auth_level = DCERPC_AUTH_LEVEL_PRIVACY;
2010 new_conn->auth_level = DCERPC_AUTH_LEVEL_INTEGRITY;
2013 /* Ensure we setup the retry handler. */
2014 set_domain_offline(domain);
2017 talloc_destroy(mem_ctx);
2021 /* Close down all open pipes on a connection. */
2023 void invalidate_cm_connection(struct winbindd_domain *domain)
2026 struct winbindd_cm_conn *conn = &domain->conn;
2028 /* We're closing down a possibly dead
2029 connection. Don't have impossibly long (10s) timeouts. */
2032 cli_set_timeout(conn->cli, 1000); /* 1 second. */
2035 if (conn->samr_pipe != NULL) {
2036 if (is_valid_policy_hnd(&conn->sam_connect_handle)) {
2037 dcerpc_samr_Close(conn->samr_pipe->binding_handle,
2039 &conn->sam_connect_handle,
2042 TALLOC_FREE(conn->samr_pipe);
2043 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
2045 cli_set_timeout(conn->cli, 500);
2049 if (conn->lsa_pipe != NULL) {
2050 if (is_valid_policy_hnd(&conn->lsa_policy)) {
2051 dcerpc_lsa_Close(conn->lsa_pipe->binding_handle,
2056 TALLOC_FREE(conn->lsa_pipe);
2057 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
2059 cli_set_timeout(conn->cli, 500);
2063 if (conn->lsa_pipe_tcp != NULL) {
2064 if (is_valid_policy_hnd(&conn->lsa_policy)) {
2065 dcerpc_lsa_Close(conn->lsa_pipe_tcp->binding_handle,
2070 TALLOC_FREE(conn->lsa_pipe_tcp);
2071 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
2073 cli_set_timeout(conn->cli, 500);
2077 if (conn->netlogon_pipe != NULL) {
2078 TALLOC_FREE(conn->netlogon_pipe);
2079 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
2081 cli_set_timeout(conn->cli, 500);
2085 conn->auth_level = DCERPC_AUTH_LEVEL_PRIVACY;
2086 conn->netlogon_force_reauth = false;
2087 conn->netlogon_flags = 0;
2088 TALLOC_FREE(conn->netlogon_creds);
2091 cli_shutdown(conn->cli);
2097 void close_conns_after_fork(void)
2099 struct winbindd_domain *domain;
2100 struct winbindd_cli_state *cli_state;
2102 for (domain = domain_list(); domain; domain = domain->next) {
2104 * first close the low level SMB TCP connection
2105 * so that we don't generate any SMBclose
2106 * requests in invalidate_cm_connection()
2108 if (cli_state_is_connected(domain->conn.cli)) {
2109 smbXcli_conn_disconnect(domain->conn.cli->conn, NT_STATUS_OK);
2112 invalidate_cm_connection(domain);
2115 for (cli_state = winbindd_client_list();
2117 cli_state = cli_state->next) {
2118 if (cli_state->sock >= 0) {
2119 close(cli_state->sock);
2120 cli_state->sock = -1;
2125 static bool connection_ok(struct winbindd_domain *domain)
2129 ok = cli_state_is_connected(domain->conn.cli);
2131 DEBUG(3, ("connection_ok: Connection to %s for domain %s is not connected\n",
2132 domain->dcname, domain->name));
2136 if (domain->online == False) {
2137 DEBUG(3, ("connection_ok: Domain %s is offline\n", domain->name));
2144 /* Initialize a new connection up to the RPC BIND.
2145 Bypass online status check so always does network calls. */
2147 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain, bool need_rw_dc)
2150 bool skip_connection = domain->internal;
2151 if (need_rw_dc && domain->rodc) {
2152 skip_connection = false;
2155 /* Internal connections never use the network. */
2156 if (dom_sid_equal(&domain->sid, &global_sid_Builtin)) {
2157 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2160 /* Still ask the internal LSA and SAMR server about the local domain */
2161 if (skip_connection || connection_ok(domain)) {
2162 if (!domain->initialized) {
2163 set_dc_type_and_flags(domain);
2165 return NT_STATUS_OK;
2168 invalidate_cm_connection(domain);
2170 if (!domain->primary && !domain->initialized) {
2172 * Before we connect to a trust, work out if it is an
2173 * AD domain by asking our own domain.
2175 set_dc_type_and_flags_trustinfo(domain);
2178 result = cm_open_connection(domain, &domain->conn);
2180 if (NT_STATUS_IS_OK(result) && !domain->initialized) {
2181 set_dc_type_and_flags(domain);
2187 NTSTATUS init_dc_connection(struct winbindd_domain *domain, bool need_rw_dc)
2189 if (dom_sid_equal(&domain->sid, &global_sid_Builtin)) {
2190 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2193 if (domain->initialized && !domain->online) {
2194 /* We check for online status elsewhere. */
2195 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
2198 return init_dc_connection_network(domain, need_rw_dc);
2201 static NTSTATUS init_dc_connection_rpc(struct winbindd_domain *domain, bool need_rw_dc)
2205 status = init_dc_connection(domain, need_rw_dc);
2206 if (!NT_STATUS_IS_OK(status)) {
2210 if (!domain->internal && domain->conn.cli == NULL) {
2211 /* happens for trusted domains without inbound trust */
2212 return NT_STATUS_TRUSTED_DOMAIN_FAILURE;
2215 return NT_STATUS_OK;
2218 /******************************************************************************
2219 Set the trust flags (direction and forest location) for a domain
2220 ******************************************************************************/
2222 static bool set_dc_type_and_flags_trustinfo( struct winbindd_domain *domain )
2224 struct winbindd_domain *our_domain;
2225 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2227 struct netr_DomainTrustList trusts;
2229 uint32 flags = (NETR_TRUST_FLAG_IN_FOREST |
2230 NETR_TRUST_FLAG_OUTBOUND |
2231 NETR_TRUST_FLAG_INBOUND);
2232 struct rpc_pipe_client *cli;
2233 TALLOC_CTX *mem_ctx = NULL;
2234 struct dcerpc_binding_handle *b;
2236 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s\n", domain->name ));
2238 /* Our primary domain doesn't need to worry about trust flags.
2239 Force it to go through the network setup */
2240 if ( domain->primary ) {
2244 mem_ctx = talloc_stackframe();
2245 our_domain = find_our_domain();
2246 if (our_domain->internal) {
2247 result = init_dc_connection(our_domain, false);
2248 if (!NT_STATUS_IS_OK(result)) {
2249 DEBUG(3,("set_dc_type_and_flags_trustinfo: "
2250 "Not able to make a connection to our domain: %s\n",
2251 nt_errstr(result)));
2252 TALLOC_FREE(mem_ctx);
2257 /* This won't work unless our domain is AD */
2258 if ( !our_domain->active_directory ) {
2259 TALLOC_FREE(mem_ctx);
2263 if (our_domain->internal) {
2264 result = wb_open_internal_pipe(mem_ctx, &ndr_table_netlogon, &cli);
2265 } else if (!connection_ok(our_domain)) {
2266 DEBUG(3,("set_dc_type_and_flags_trustinfo: "
2267 "No connection to our domain!\n"));
2268 TALLOC_FREE(mem_ctx);
2271 result = cm_connect_netlogon(our_domain, &cli);
2274 if (!NT_STATUS_IS_OK(result)) {
2275 DEBUG(5, ("set_dc_type_and_flags_trustinfo: Could not open "
2276 "a connection to %s for PIPE_NETLOGON (%s)\n",
2277 domain->name, nt_errstr(result)));
2278 TALLOC_FREE(mem_ctx);
2281 b = cli->binding_handle;
2283 /* Use DsEnumerateDomainTrusts to get us the trust direction and type. */
2284 result = dcerpc_netr_DsrEnumerateDomainTrusts(b, mem_ctx,
2289 if (!NT_STATUS_IS_OK(result)) {
2290 DEBUG(0,("set_dc_type_and_flags_trustinfo: "
2291 "failed to query trusted domain list: %s\n",
2292 nt_errstr(result)));
2293 TALLOC_FREE(mem_ctx);
2296 if (!W_ERROR_IS_OK(werr)) {
2297 DEBUG(0,("set_dc_type_and_flags_trustinfo: "
2298 "failed to query trusted domain list: %s\n",
2300 TALLOC_FREE(mem_ctx);
2304 /* Now find the domain name and get the flags */
2306 for ( i=0; i<trusts.count; i++ ) {
2307 if ( strequal( domain->name, trusts.array[i].netbios_name) ) {
2308 domain->domain_flags = trusts.array[i].trust_flags;
2309 domain->domain_type = trusts.array[i].trust_type;
2310 domain->domain_trust_attribs = trusts.array[i].trust_attributes;
2312 if ( domain->domain_type == LSA_TRUST_TYPE_UPLEVEL )
2313 domain->active_directory = True;
2315 /* This flag is only set if the domain is *our*
2316 primary domain and the primary domain is in
2319 domain->native_mode = (domain->domain_flags & NETR_TRUST_FLAG_NATIVE);
2321 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s is %sin "
2322 "native mode.\n", domain->name,
2323 domain->native_mode ? "" : "NOT "));
2325 DEBUG(5,("set_dc_type_and_flags_trustinfo: domain %s is %s"
2326 "running active directory.\n", domain->name,
2327 domain->active_directory ? "" : "NOT "));
2329 domain->can_do_ncacn_ip_tcp = domain->active_directory;
2331 domain->initialized = True;
2337 TALLOC_FREE(mem_ctx);
2339 return domain->initialized;
2342 /******************************************************************************
2343 We can 'sense' certain things about the DC by it's replies to certain
2346 This tells us if this particular remote server is Active Directory, and if it
2348 ******************************************************************************/
2350 static void set_dc_type_and_flags_connect( struct winbindd_domain *domain )
2352 NTSTATUS status, result;
2354 TALLOC_CTX *mem_ctx = NULL;
2355 struct rpc_pipe_client *cli = NULL;
2356 struct policy_handle pol;
2357 union dssetup_DsRoleInfo info;
2358 union lsa_PolicyInformation *lsa_info = NULL;
2360 if (!domain->internal && !connection_ok(domain)) {
2364 mem_ctx = talloc_init("set_dc_type_and_flags on domain %s\n",
2367 DEBUG(1, ("set_dc_type_and_flags_connect: talloc_init() failed\n"));
2371 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s\n", domain->name ));
2373 if (domain->internal) {
2374 status = wb_open_internal_pipe(mem_ctx,
2378 status = cli_rpc_pipe_open_noauth(domain->conn.cli,
2383 if (!NT_STATUS_IS_OK(status)) {
2384 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
2385 "PI_DSSETUP on domain %s: (%s)\n",
2386 domain->name, nt_errstr(status)));
2388 /* if this is just a non-AD domain we need to continue
2389 * identifying so that we can in the end return with
2390 * domain->initialized = True - gd */
2395 status = dcerpc_dssetup_DsRoleGetPrimaryDomainInformation(cli->binding_handle, mem_ctx,
2396 DS_ROLE_BASIC_INFORMATION,
2401 if (NT_STATUS_IS_OK(status)) {
2402 result = werror_to_ntstatus(werr);
2404 if (!NT_STATUS_IS_OK(status)) {
2405 DEBUG(5, ("set_dc_type_and_flags_connect: rpccli_ds_getprimarydominfo "
2406 "on domain %s failed: (%s)\n",
2407 domain->name, nt_errstr(status)));
2409 /* older samba3 DCs will return DCERPC_FAULT_OP_RNG_ERROR for
2410 * every opcode on the DSSETUP pipe, continue with
2411 * no_dssetup mode here as well to get domain->initialized
2414 if (NT_STATUS_EQUAL(status, NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE)) {
2418 TALLOC_FREE(mem_ctx);
2422 if ((info.basic.flags & DS_ROLE_PRIMARY_DS_RUNNING) &&
2423 !(info.basic.flags & DS_ROLE_PRIMARY_DS_MIXED_MODE)) {
2424 domain->native_mode = True;
2426 domain->native_mode = False;
2430 if (domain->internal) {
2431 status = wb_open_internal_pipe(mem_ctx,
2435 status = cli_rpc_pipe_open_noauth(domain->conn.cli,
2436 &ndr_table_lsarpc, &cli);
2438 if (!NT_STATUS_IS_OK(status)) {
2439 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
2440 "PI_LSARPC on domain %s: (%s)\n",
2441 domain->name, nt_errstr(status)));
2443 TALLOC_FREE(mem_ctx);
2447 status = rpccli_lsa_open_policy2(cli, mem_ctx, True,
2448 SEC_FLAG_MAXIMUM_ALLOWED, &pol);
2450 if (NT_STATUS_IS_OK(status)) {
2451 /* This particular query is exactly what Win2k clients use
2452 to determine that the DC is active directory */
2453 status = dcerpc_lsa_QueryInfoPolicy2(cli->binding_handle, mem_ctx,
2455 LSA_POLICY_INFO_DNS,
2460 if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
2461 domain->active_directory = True;
2463 if (lsa_info->dns.name.string) {
2464 if (!strequal(domain->name, lsa_info->dns.name.string))
2466 DEBUG(1, ("set_dc_type_and_flags_connect: DC "
2467 "for domain %s claimed it was a DC "
2468 "for domain %s, refusing to "
2471 lsa_info->dns.name.string));
2473 TALLOC_FREE(mem_ctx);
2476 talloc_free(domain->name);
2477 domain->name = talloc_strdup(domain,
2478 lsa_info->dns.name.string);
2479 if (domain->name == NULL) {
2484 if (lsa_info->dns.dns_domain.string) {
2485 if (domain->alt_name != NULL &&
2486 !strequal(domain->alt_name,
2487 lsa_info->dns.dns_domain.string))
2489 DEBUG(1, ("set_dc_type_and_flags_connect: DC "
2490 "for domain %s (%s) claimed it was "
2491 "a DC for domain %s, refusing to "
2493 domain->alt_name, domain->name,
2494 lsa_info->dns.dns_domain.string));
2496 TALLOC_FREE(mem_ctx);
2499 talloc_free(domain->alt_name);
2501 talloc_strdup(domain,
2502 lsa_info->dns.dns_domain.string);
2503 if (domain->alt_name == NULL) {
2508 /* See if we can set some domain trust flags about
2511 if (lsa_info->dns.dns_forest.string) {
2512 talloc_free(domain->forest_name);
2513 domain->forest_name =
2514 talloc_strdup(domain,
2515 lsa_info->dns.dns_forest.string);
2516 if (domain->forest_name == NULL) {
2520 if (strequal(domain->forest_name, domain->alt_name)) {
2521 domain->domain_flags |= NETR_TRUST_FLAG_TREEROOT;
2525 if (lsa_info->dns.sid) {
2526 if (!is_null_sid(&domain->sid) &&
2527 !dom_sid_equal(&domain->sid,
2530 DEBUG(1, ("set_dc_type_and_flags_connect: DC "
2531 "for domain %s (%s) claimed it was "
2532 "a DC for domain %s, refusing to "
2534 dom_sid_string(talloc_tos(),
2537 dom_sid_string(talloc_tos(),
2538 lsa_info->dns.sid)));
2540 TALLOC_FREE(mem_ctx);
2543 sid_copy(&domain->sid, lsa_info->dns.sid);
2546 domain->active_directory = False;
2548 status = rpccli_lsa_open_policy(cli, mem_ctx, True,
2549 SEC_FLAG_MAXIMUM_ALLOWED,
2552 if (!NT_STATUS_IS_OK(status)) {
2556 status = dcerpc_lsa_QueryInfoPolicy(cli->binding_handle, mem_ctx,
2558 LSA_POLICY_INFO_ACCOUNT_DOMAIN,
2561 if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
2563 if (lsa_info->account_domain.name.string) {
2564 if (!strequal(domain->name,
2565 lsa_info->account_domain.name.string))
2568 ("set_dc_type_and_flags_connect: "
2569 "DC for domain %s claimed it was"
2570 " a DC for domain %s, refusing "
2571 "to initialize\n", domain->name,
2573 account_domain.name.string));
2575 TALLOC_FREE(mem_ctx);
2578 talloc_free(domain->name);
2580 talloc_strdup(domain,
2581 lsa_info->account_domain.name.string);
2584 if (lsa_info->account_domain.sid) {
2585 if (!is_null_sid(&domain->sid) &&
2586 !dom_sid_equal(&domain->sid,
2587 lsa_info->account_domain.sid))
2590 ("set_dc_type_and_flags_connect: "
2591 "DC for domain %s (%s) claimed "
2592 "it was a DC for domain %s, "
2593 "refusing to initialize\n",
2594 dom_sid_string(talloc_tos(),
2597 dom_sid_string(talloc_tos(),
2598 lsa_info->account_domain.sid)));
2600 TALLOC_FREE(mem_ctx);
2603 sid_copy(&domain->sid, lsa_info->account_domain.sid);
2609 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s is %sin native mode.\n",
2610 domain->name, domain->native_mode ? "" : "NOT "));
2612 DEBUG(5,("set_dc_type_and_flags_connect: domain %s is %srunning active directory.\n",
2613 domain->name, domain->active_directory ? "" : "NOT "));
2615 domain->can_do_ncacn_ip_tcp = domain->active_directory;
2619 TALLOC_FREE(mem_ctx);
2621 domain->initialized = True;
2624 /**********************************************************************
2625 Set the domain_flags (trust attributes, domain operating modes, etc...
2626 ***********************************************************************/
2628 static void set_dc_type_and_flags( struct winbindd_domain *domain )
2630 /* we always have to contact our primary domain */
2632 if ( domain->primary || domain->internal) {
2633 DEBUG(10,("set_dc_type_and_flags: setting up flags for "
2634 "primary or internal domain\n"));
2635 set_dc_type_and_flags_connect( domain );
2639 /* Use our DC to get the information if possible */
2641 if ( !set_dc_type_and_flags_trustinfo( domain ) ) {
2642 /* Otherwise, fallback to contacting the
2644 set_dc_type_and_flags_connect( domain );
2652 /**********************************************************************
2653 ***********************************************************************/
2655 static NTSTATUS cm_get_schannel_creds(struct winbindd_domain *domain,
2656 struct netlogon_creds_cli_context **ppdc)
2658 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2659 struct rpc_pipe_client *netlogon_pipe;
2663 if ((!IS_DC) && (!domain->primary)) {
2664 return NT_STATUS_TRUSTED_DOMAIN_FAILURE;
2667 if (domain->conn.netlogon_creds != NULL) {
2668 if (!(domain->conn.netlogon_flags & NETLOGON_NEG_AUTHENTICATED_RPC)) {
2669 return NT_STATUS_TRUSTED_DOMAIN_FAILURE;
2671 *ppdc = domain->conn.netlogon_creds;
2672 return NT_STATUS_OK;
2675 result = cm_connect_netlogon(domain, &netlogon_pipe);
2676 if (!NT_STATUS_IS_OK(result)) {
2680 if (domain->conn.netlogon_creds == NULL) {
2681 return NT_STATUS_TRUSTED_DOMAIN_FAILURE;
2684 if (!(domain->conn.netlogon_flags & NETLOGON_NEG_AUTHENTICATED_RPC)) {
2685 return NT_STATUS_TRUSTED_DOMAIN_FAILURE;
2688 *ppdc = domain->conn.netlogon_creds;
2689 return NT_STATUS_OK;
2692 NTSTATUS cm_connect_sam(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2694 struct rpc_pipe_client **cli, struct policy_handle *sam_handle)
2696 struct winbindd_cm_conn *conn;
2697 NTSTATUS status, result;
2698 struct netlogon_creds_cli_context *p_creds;
2699 struct cli_credentials *creds = NULL;
2701 if (sid_check_is_our_sam(&domain->sid)) {
2702 if (domain->rodc == false || need_rw_dc == false) {
2703 return open_internal_samr_conn(mem_ctx, domain, cli, sam_handle);
2707 status = init_dc_connection_rpc(domain, need_rw_dc);
2708 if (!NT_STATUS_IS_OK(status)) {
2712 conn = &domain->conn;
2714 if (rpccli_is_connected(conn->samr_pipe)) {
2718 TALLOC_FREE(conn->samr_pipe);
2721 * No SAMR pipe yet. Attempt to get an NTLMSSP SPNEGO authenticated
2722 * sign and sealed pipe using the machine account password by
2723 * preference. If we can't - try schannel, if that fails, try
2727 result = get_trust_credentials(domain, talloc_tos(), false, &creds);
2728 if (!NT_STATUS_IS_OK(result)) {
2729 DEBUG(10, ("cm_connect_sam: No no user available for "
2730 "domain %s, trying schannel\n", conn->cli->domain));
2734 if (cli_credentials_is_anonymous(creds)) {
2739 * We have an authenticated connection. Use a SPNEGO
2740 * authenticated SAMR pipe with sign & seal.
2742 status = cli_rpc_pipe_open_with_creds(conn->cli,
2745 DCERPC_AUTH_TYPE_SPNEGO,
2747 smbXcli_conn_remote_name(conn->cli->conn),
2750 if (!NT_STATUS_IS_OK(status)) {
2751 DEBUG(10,("cm_connect_sam: failed to connect to SAMR "
2752 "pipe for domain %s using NTLMSSP "
2753 "authenticated pipe: user %s. Error was "
2754 "%s\n", domain->name,
2755 cli_credentials_get_unparsed_name(creds, talloc_tos()),
2756 nt_errstr(status)));
2760 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for "
2761 "domain %s using NTLMSSP authenticated "
2762 "pipe: user %s\n", domain->name,
2763 cli_credentials_get_unparsed_name(creds, talloc_tos())));
2765 status = dcerpc_samr_Connect2(conn->samr_pipe->binding_handle, mem_ctx,
2766 conn->samr_pipe->desthost,
2767 SEC_FLAG_MAXIMUM_ALLOWED,
2768 &conn->sam_connect_handle,
2770 if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
2773 if (NT_STATUS_IS_OK(status)) {
2777 DEBUG(10,("cm_connect_sam: ntlmssp-sealed dcerpc_samr_Connect2 "
2778 "failed for domain %s, error was %s. Trying schannel\n",
2779 domain->name, nt_errstr(status) ));
2780 TALLOC_FREE(conn->samr_pipe);
2784 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2786 status = cm_get_schannel_creds(domain, &p_creds);
2787 if (!NT_STATUS_IS_OK(status)) {
2788 /* If this call fails - conn->cli can now be NULL ! */
2789 DEBUG(10, ("cm_connect_sam: Could not get schannel auth info "
2790 "for domain %s (error %s), trying anon\n",
2792 nt_errstr(status) ));
2795 status = cli_rpc_pipe_open_schannel_with_key
2796 (conn->cli, &ndr_table_samr, NCACN_NP,
2797 domain->name, p_creds, &conn->samr_pipe);
2799 if (!NT_STATUS_IS_OK(status)) {
2800 DEBUG(10,("cm_connect_sam: failed to connect to SAMR pipe for "
2801 "domain %s using schannel. Error was %s\n",
2802 domain->name, nt_errstr(status) ));
2805 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for domain %s using "
2806 "schannel.\n", domain->name ));
2808 status = dcerpc_samr_Connect2(conn->samr_pipe->binding_handle, mem_ctx,
2809 conn->samr_pipe->desthost,
2810 SEC_FLAG_MAXIMUM_ALLOWED,
2811 &conn->sam_connect_handle,
2813 if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
2816 if (NT_STATUS_IS_OK(status)) {
2819 DEBUG(10,("cm_connect_sam: schannel-sealed dcerpc_samr_Connect2 failed "
2820 "for domain %s, error was %s. Trying anonymous\n",
2821 domain->name, nt_errstr(status) ));
2822 TALLOC_FREE(conn->samr_pipe);
2826 /* Finally fall back to anonymous. */
2827 if (lp_winbind_sealed_pipes() || lp_require_strong_key()) {
2828 status = NT_STATUS_DOWNGRADE_DETECTED;
2829 DEBUG(1, ("Unwilling to make SAMR connection to domain %s"
2830 "without connection level security, "
2831 "must set 'winbind sealed pipes = false' and "
2832 "'require strong key = false' to proceed: %s\n",
2833 domain->name, nt_errstr(status)));
2836 status = cli_rpc_pipe_open_noauth(conn->cli, &ndr_table_samr,
2839 if (!NT_STATUS_IS_OK(status)) {
2843 status = dcerpc_samr_Connect2(conn->samr_pipe->binding_handle, mem_ctx,
2844 conn->samr_pipe->desthost,
2845 SEC_FLAG_MAXIMUM_ALLOWED,
2846 &conn->sam_connect_handle,
2848 if (!NT_STATUS_IS_OK(status)) {
2849 DEBUG(10,("cm_connect_sam: rpccli_samr_Connect2 failed "
2850 "for domain %s Error was %s\n",
2851 domain->name, nt_errstr(status) ));
2854 if (!NT_STATUS_IS_OK(result)) {
2856 DEBUG(10,("cm_connect_sam: dcerpc_samr_Connect2 failed "
2857 "for domain %s Error was %s\n",
2858 domain->name, nt_errstr(result)));
2863 status = dcerpc_samr_OpenDomain(conn->samr_pipe->binding_handle,
2865 &conn->sam_connect_handle,
2866 SEC_FLAG_MAXIMUM_ALLOWED,
2868 &conn->sam_domain_handle,
2870 if (!NT_STATUS_IS_OK(status)) {
2877 if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
2879 * if we got access denied, we might just have no access rights
2880 * to talk to the remote samr server server (e.g. when we are a
2881 * PDC and we are connecting a w2k8 pdc via an interdomain
2882 * trust). In that case do not invalidate the whole connection
2885 TALLOC_FREE(conn->samr_pipe);
2886 ZERO_STRUCT(conn->sam_domain_handle);
2888 } else if (!NT_STATUS_IS_OK(status)) {
2889 invalidate_cm_connection(domain);
2893 *cli = conn->samr_pipe;
2894 *sam_handle = conn->sam_domain_handle;
2898 /**********************************************************************
2899 open an schanneld ncacn_ip_tcp connection to LSA
2900 ***********************************************************************/
2902 static NTSTATUS cm_connect_lsa_tcp(struct winbindd_domain *domain,
2903 TALLOC_CTX *mem_ctx,
2904 struct rpc_pipe_client **cli)
2906 struct winbindd_cm_conn *conn;
2907 struct netlogon_creds_cli_context *creds;
2910 DEBUG(10,("cm_connect_lsa_tcp\n"));
2912 status = init_dc_connection_rpc(domain, false);
2913 if (!NT_STATUS_IS_OK(status)) {
2917 conn = &domain->conn;
2919 if (conn->lsa_pipe_tcp &&
2920 conn->lsa_pipe_tcp->transport->transport == NCACN_IP_TCP &&
2921 conn->lsa_pipe_tcp->auth->auth_level >= DCERPC_AUTH_LEVEL_INTEGRITY &&
2922 rpccli_is_connected(conn->lsa_pipe_tcp)) {
2926 TALLOC_FREE(conn->lsa_pipe_tcp);
2928 status = cm_get_schannel_creds(domain, &creds);
2929 if (!NT_STATUS_IS_OK(status)) {
2933 status = cli_rpc_pipe_open_schannel_with_key(conn->cli,
2938 &conn->lsa_pipe_tcp);
2939 if (!NT_STATUS_IS_OK(status)) {
2940 DEBUG(10,("cli_rpc_pipe_open_schannel_with_key failed: %s\n",
2941 nt_errstr(status)));
2946 if (!NT_STATUS_IS_OK(status)) {
2947 TALLOC_FREE(conn->lsa_pipe_tcp);
2951 *cli = conn->lsa_pipe_tcp;
2956 NTSTATUS cm_connect_lsa(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2957 struct rpc_pipe_client **cli, struct policy_handle *lsa_policy)
2959 struct winbindd_cm_conn *conn;
2960 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2961 struct netlogon_creds_cli_context *p_creds;
2962 struct cli_credentials *creds = NULL;
2964 result = init_dc_connection_rpc(domain, false);
2965 if (!NT_STATUS_IS_OK(result))
2968 conn = &domain->conn;
2970 if (rpccli_is_connected(conn->lsa_pipe)) {
2974 TALLOC_FREE(conn->lsa_pipe);
2976 result = get_trust_credentials(domain, talloc_tos(), false, &creds);
2977 if (!NT_STATUS_IS_OK(result)) {
2978 DEBUG(10, ("cm_connect_sam: No no user available for "
2979 "domain %s, trying schannel\n", conn->cli->domain));
2983 if (cli_credentials_is_anonymous(creds)) {
2988 * We have an authenticated connection. Use a SPNEGO
2989 * authenticated LSA pipe with sign & seal.
2991 result = cli_rpc_pipe_open_with_creds
2992 (conn->cli, &ndr_table_lsarpc, NCACN_NP,
2993 DCERPC_AUTH_TYPE_SPNEGO,
2995 smbXcli_conn_remote_name(conn->cli->conn),
2998 if (!NT_STATUS_IS_OK(result)) {
2999 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
3000 "domain %s using NTLMSSP authenticated pipe: user "
3001 "%s. Error was %s. Trying schannel.\n",
3003 cli_credentials_get_unparsed_name(creds, talloc_tos()),
3004 nt_errstr(result)));
3008 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
3009 "NTLMSSP authenticated pipe: user %s\n",
3010 domain->name, cli_credentials_get_unparsed_name(creds, talloc_tos())));
3012 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
3013 SEC_FLAG_MAXIMUM_ALLOWED,
3015 if (NT_STATUS_IS_OK(result)) {
3019 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
3022 TALLOC_FREE(conn->lsa_pipe);
3026 /* Fall back to schannel if it's a W2K pre-SP1 box. */
3028 result = cm_get_schannel_creds(domain, &p_creds);
3029 if (!NT_STATUS_IS_OK(result)) {
3030 /* If this call fails - conn->cli can now be NULL ! */
3031 DEBUG(10, ("cm_connect_lsa: Could not get schannel auth info "
3032 "for domain %s (error %s), trying anon\n",
3034 nt_errstr(result) ));
3037 result = cli_rpc_pipe_open_schannel_with_key
3038 (conn->cli, &ndr_table_lsarpc, NCACN_NP,
3039 domain->name, p_creds, &conn->lsa_pipe);
3041 if (!NT_STATUS_IS_OK(result)) {
3042 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
3043 "domain %s using schannel. Error was %s\n",
3044 domain->name, nt_errstr(result) ));
3047 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
3048 "schannel.\n", domain->name ));
3050 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
3051 SEC_FLAG_MAXIMUM_ALLOWED,
3053 if (NT_STATUS_IS_OK(result)) {
3057 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
3060 TALLOC_FREE(conn->lsa_pipe);
3064 if (lp_winbind_sealed_pipes() || lp_require_strong_key()) {
3065 result = NT_STATUS_DOWNGRADE_DETECTED;
3066 DEBUG(1, ("Unwilling to make LSA connection to domain %s"
3067 "without connection level security, "
3068 "must set 'winbind sealed pipes = false' and "
3069 "'require strong key = false' to proceed: %s\n",
3070 domain->name, nt_errstr(result)));
3074 result = cli_rpc_pipe_open_noauth(conn->cli,
3077 if (!NT_STATUS_IS_OK(result)) {
3081 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
3082 SEC_FLAG_MAXIMUM_ALLOWED,
3085 if (!NT_STATUS_IS_OK(result)) {
3086 invalidate_cm_connection(domain);
3090 *cli = conn->lsa_pipe;
3091 *lsa_policy = conn->lsa_policy;
3095 /****************************************************************************
3096 Open a LSA connection to a DC, suiteable for LSA lookup calls.
3097 ****************************************************************************/
3099 NTSTATUS cm_connect_lsat(struct winbindd_domain *domain,
3100 TALLOC_CTX *mem_ctx,
3101 struct rpc_pipe_client **cli,
3102 struct policy_handle *lsa_policy)
3106 if (domain->can_do_ncacn_ip_tcp) {
3107 status = cm_connect_lsa_tcp(domain, mem_ctx, cli);
3108 if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED) ||
3109 NT_STATUS_EQUAL(status, NT_STATUS_RPC_SEC_PKG_ERROR) ||
3110 NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_ACCESS_DENIED)) {
3111 invalidate_cm_connection(domain);
3112 status = cm_connect_lsa_tcp(domain, mem_ctx, cli);
3114 if (NT_STATUS_IS_OK(status)) {
3119 * we tried twice to connect via ncan_ip_tcp and schannel and
3120 * failed - maybe it is a trusted domain we can't connect to ?
3121 * do not try tcp next time - gd
3123 * This also prevents NETLOGON over TCP
3125 domain->can_do_ncacn_ip_tcp = false;
3128 status = cm_connect_lsa(domain, mem_ctx, cli, lsa_policy);
3133 /****************************************************************************
3134 Open the netlogon pipe to this DC. Use schannel if specified in client conf.
3135 session key stored in conn->netlogon_pipe->dc->sess_key.
3136 ****************************************************************************/
3138 static NTSTATUS cm_connect_netlogon_transport(struct winbindd_domain *domain,
3139 enum dcerpc_transport_t transport,
3140 struct rpc_pipe_client **cli)
3142 struct messaging_context *msg_ctx = winbind_messaging_context();
3143 struct winbindd_cm_conn *conn;
3145 enum netr_SchannelType sec_chan_type;
3146 const char *account_name;
3147 const char *domain_name;
3148 const struct samr_Password *current_nt_hash = NULL;
3149 const struct samr_Password *previous_nt_hash = NULL;
3150 struct netlogon_creds_CredentialState *netlogon_creds = NULL;
3151 struct cli_credentials *creds = NULL;
3155 result = init_dc_connection_rpc(domain, true);
3156 if (!NT_STATUS_IS_OK(result)) {
3160 conn = &domain->conn;
3162 if (rpccli_is_connected(conn->netlogon_pipe)) {
3163 *cli = conn->netlogon_pipe;
3164 return NT_STATUS_OK;
3167 TALLOC_FREE(conn->netlogon_pipe);
3168 conn->netlogon_flags = 0;
3169 TALLOC_FREE(conn->netlogon_creds);
3171 result = get_trust_credentials(domain, talloc_tos(), true, &creds);
3172 if (!NT_STATUS_IS_OK(result)) {
3173 DEBUG(10, ("cm_connect_sam: No no user available for "
3174 "domain %s when trying schannel\n", conn->cli->domain));
3175 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
3178 if (cli_credentials_is_anonymous(creds)) {
3179 DEBUG(1, ("get_trust_credential only gave anonymous for %s, unable to make get NETLOGON credentials\n",
3181 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
3184 sec_chan_type = cli_credentials_get_secure_channel_type(creds);
3185 if (sec_chan_type == SEC_CHAN_NULL) {
3186 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
3190 account_name = cli_credentials_get_username(creds);
3191 domain_name = cli_credentials_get_domain(creds);
3192 current_nt_hash = cli_credentials_get_nt_hash(creds, talloc_tos());
3193 if (current_nt_hash == NULL) {
3194 return NT_STATUS_NO_MEMORY;
3197 result = rpccli_create_netlogon_creds(domain->dcname,
3203 &conn->netlogon_creds);
3204 if (!NT_STATUS_IS_OK(result)) {
3205 DEBUG(1, ("rpccli_create_netlogon_creds failed for %s, "
3206 "unable to create NETLOGON credentials: %s\n",
3207 domain->name, nt_errstr(result)));
3211 result = rpccli_setup_netlogon_creds(conn->cli, transport,
3212 conn->netlogon_creds,
3213 conn->netlogon_force_reauth,
3216 conn->netlogon_force_reauth = false;
3217 if (!NT_STATUS_IS_OK(result)) {
3218 DEBUG(1, ("rpccli_setup_netlogon_creds failed for %s, "
3219 "unable to setup NETLOGON credentials: %s\n",
3220 domain->name, nt_errstr(result)));
3224 result = netlogon_creds_cli_get(conn->netlogon_creds,
3227 if (!NT_STATUS_IS_OK(result)) {
3228 DEBUG(1, ("netlogon_creds_cli_get failed for %s, "
3229 "unable to get NETLOGON credentials: %s\n",
3230 domain->name, nt_errstr(result)));
3233 conn->netlogon_flags = netlogon_creds->negotiate_flags;
3234 TALLOC_FREE(netlogon_creds);
3237 if (!(conn->netlogon_flags & NETLOGON_NEG_AUTHENTICATED_RPC)) {
3238 if (lp_winbind_sealed_pipes() || lp_require_strong_key()) {
3239 result = NT_STATUS_DOWNGRADE_DETECTED;
3240 DEBUG(1, ("Unwilling to make connection to domain %s"
3241 "without connection level security, "
3242 "must set 'winbind sealed pipes = false' and "
3243 "'require strong key = false' to proceed: %s\n",
3244 domain->name, nt_errstr(result)));
3245 invalidate_cm_connection(domain);
3248 result = cli_rpc_pipe_open_noauth_transport(conn->cli,
3250 &ndr_table_netlogon,
3251 &conn->netlogon_pipe);
3252 if (!NT_STATUS_IS_OK(result)) {
3253 invalidate_cm_connection(domain);
3257 *cli = conn->netlogon_pipe;
3258 return NT_STATUS_OK;
3261 /* Using the credentials from the first pipe, open a signed and sealed
3262 second netlogon pipe. The session key is stored in the schannel
3263 part of the new pipe auth struct.
3266 result = cli_rpc_pipe_open_schannel_with_key(
3267 conn->cli, &ndr_table_netlogon, transport,
3269 conn->netlogon_creds,
3270 &conn->netlogon_pipe);
3271 if (!NT_STATUS_IS_OK(result)) {
3272 DEBUG(3, ("Could not open schannel'ed NETLOGON pipe. Error "
3273 "was %s\n", nt_errstr(result)));
3275 invalidate_cm_connection(domain);
3279 *cli = conn->netlogon_pipe;
3280 return NT_STATUS_OK;
3283 /****************************************************************************
3284 Open a LSA connection to a DC, suiteable for LSA lookup calls.
3285 ****************************************************************************/
3287 NTSTATUS cm_connect_netlogon(struct winbindd_domain *domain,
3288 struct rpc_pipe_client **cli)
3292 if (domain->active_directory && domain->can_do_ncacn_ip_tcp) {
3293 status = cm_connect_netlogon_transport(domain, NCACN_IP_TCP, cli);
3294 if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED) ||
3295 NT_STATUS_EQUAL(status, NT_STATUS_RPC_SEC_PKG_ERROR) ||
3296 NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_ACCESS_DENIED)) {
3297 invalidate_cm_connection(domain);
3298 status = cm_connect_netlogon_transport(domain, NCACN_IP_TCP, cli);
3300 if (NT_STATUS_IS_OK(status)) {
3305 * we tried twice to connect via ncan_ip_tcp and schannel and
3306 * failed - maybe it is a trusted domain we can't connect to ?
3307 * do not try tcp next time - gd
3309 * This also prevents LSA over TCP
3311 domain->can_do_ncacn_ip_tcp = false;
3314 status = cm_connect_netlogon_transport(domain, NCACN_NP, cli);
3319 void winbind_msg_ip_dropped(struct messaging_context *msg_ctx,
3322 struct server_id server_id,
3325 struct winbindd_domain *domain;
3326 char *freeit = NULL;
3330 || (data->data == NULL)
3331 || (data->length == 0)
3332 || (data->data[data->length-1] != '\0')) {
3333 DEBUG(1, ("invalid msg_ip_dropped message: not a valid "
3338 addr = (char *)data->data;
3339 DEBUG(10, ("IP %s dropped\n", addr));
3341 if (!is_ipaddress(addr)) {
3344 * Some code sends us ip addresses with the /netmask
3347 slash = strchr(addr, '/');
3348 if (slash == NULL) {
3349 DEBUG(1, ("invalid msg_ip_dropped message: %s",
3353 freeit = talloc_strndup(talloc_tos(), addr, slash-addr);
3354 if (freeit == NULL) {
3355 DEBUG(1, ("talloc failed\n"));
3359 DEBUG(10, ("Stripped /netmask to IP %s\n", addr));
3362 for (domain = domain_list(); domain != NULL; domain = domain->next) {
3363 char sockaddr[INET6_ADDRSTRLEN];
3365 if (!cli_state_is_connected(domain->conn.cli)) {
3369 print_sockaddr(sockaddr, sizeof(sockaddr),
3370 smbXcli_conn_local_sockaddr(domain->conn.cli->conn));
3372 if (strequal(sockaddr, addr)) {
3373 smbXcli_conn_disconnect(domain->conn.cli->conn, NT_STATUS_OK);
3376 TALLOC_FREE(freeit);