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_netlogon.h"
66 #include "../librpc/gen_ndr/ndr_samr_c.h"
67 #include "../librpc/gen_ndr/ndr_lsa_c.h"
68 #include "rpc_client/cli_lsarpc.h"
69 #include "../librpc/gen_ndr/ndr_dssetup_c.h"
70 #include "libads/sitename_cache.h"
71 #include "librpc/gen_ndr/messaging.h"
72 #include "libsmb/clidgram.h"
75 #include "../libcli/security/security.h"
78 #define DBGC_CLASS DBGC_WINBIND
82 struct sockaddr_storage ss;
85 extern struct winbindd_methods reconnect_methods;
86 extern bool override_logfile;
88 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain);
89 static void set_dc_type_and_flags( struct winbindd_domain *domain );
90 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
91 struct dc_name_ip **dcs, int *num_dcs);
93 /****************************************************************
94 Child failed to find DC's. Reschedule check.
95 ****************************************************************/
97 static void msg_failed_to_go_online(struct messaging_context *msg,
100 struct server_id server_id,
103 struct winbindd_domain *domain;
104 const char *domainname = (const char *)data->data;
106 if (data->data == NULL || data->length == 0) {
110 DEBUG(5,("msg_fail_to_go_online: received for domain %s.\n", domainname));
112 for (domain = domain_list(); domain; domain = domain->next) {
113 if (domain->internal) {
117 if (strequal(domain->name, domainname)) {
118 if (domain->online) {
119 /* We're already online, ignore. */
120 DEBUG(5,("msg_fail_to_go_online: domain %s "
121 "already online.\n", domainname));
125 /* Reschedule the online check. */
126 set_domain_offline(domain);
132 /****************************************************************
133 Actually cause a reconnect from a message.
134 ****************************************************************/
136 static void msg_try_to_go_online(struct messaging_context *msg,
139 struct server_id server_id,
142 struct winbindd_domain *domain;
143 const char *domainname = (const char *)data->data;
145 if (data->data == NULL || data->length == 0) {
149 DEBUG(5,("msg_try_to_go_online: received for domain %s.\n", domainname));
151 for (domain = domain_list(); domain; domain = domain->next) {
152 if (domain->internal) {
156 if (strequal(domain->name, domainname)) {
158 if (domain->online) {
159 /* We're already online, ignore. */
160 DEBUG(5,("msg_try_to_go_online: domain %s "
161 "already online.\n", domainname));
165 /* This call takes care of setting the online
166 flag to true if we connected, or re-adding
167 the offline handler if false. Bypasses online
168 check so always does network calls. */
170 init_dc_connection_network(domain);
176 /****************************************************************
177 Fork a child to try and contact a DC. Do this as contacting a
178 DC requires blocking lookups and we don't want to block our
180 ****************************************************************/
182 static bool fork_child_dc_connect(struct winbindd_domain *domain)
184 struct dc_name_ip *dcs = NULL;
186 TALLOC_CTX *mem_ctx = NULL;
187 pid_t parent_pid = sys_getpid();
190 if (domain->dc_probe_pid != (pid_t)-1) {
192 * We might already have a DC probe
193 * child working, check.
195 if (process_exists_by_pid(domain->dc_probe_pid)) {
196 DEBUG(10,("fork_child_dc_connect: pid %u already "
197 "checking for DC's.\n",
198 (unsigned int)domain->dc_probe_pid));
201 domain->dc_probe_pid = (pid_t)-1;
204 domain->dc_probe_pid = sys_fork();
206 if (domain->dc_probe_pid == (pid_t)-1) {
207 DEBUG(0, ("fork_child_dc_connect: Could not fork: %s\n", strerror(errno)));
211 if (domain->dc_probe_pid != (pid_t)0) {
213 messaging_register(winbind_messaging_context(), NULL,
214 MSG_WINBIND_TRY_TO_GO_ONLINE,
215 msg_try_to_go_online);
216 messaging_register(winbind_messaging_context(), NULL,
217 MSG_WINBIND_FAILED_TO_GO_ONLINE,
218 msg_failed_to_go_online);
224 /* Leave messages blocked - we will never process one. */
226 if (!override_logfile) {
227 if (asprintf(&lfile, "%s/log.winbindd-dc-connect", get_dyn_LOGFILEBASE()) == -1) {
228 DEBUG(0, ("fork_child_dc_connect: out of memory.\n"));
233 if (!winbindd_reinit_after_fork(lfile)) {
234 messaging_send_buf(winbind_messaging_context(),
235 pid_to_procid(parent_pid),
236 MSG_WINBIND_FAILED_TO_GO_ONLINE,
237 (uint8 *)domain->name,
238 strlen(domain->name)+1);
243 mem_ctx = talloc_init("fork_child_dc_connect");
245 DEBUG(0,("talloc_init failed.\n"));
246 messaging_send_buf(winbind_messaging_context(),
247 pid_to_procid(parent_pid),
248 MSG_WINBIND_FAILED_TO_GO_ONLINE,
249 (uint8 *)domain->name,
250 strlen(domain->name)+1);
254 if ((!get_dcs(mem_ctx, domain, &dcs, &num_dcs)) || (num_dcs == 0)) {
255 /* Still offline ? Can't find DC's. */
256 messaging_send_buf(winbind_messaging_context(),
257 pid_to_procid(parent_pid),
258 MSG_WINBIND_FAILED_TO_GO_ONLINE,
259 (uint8 *)domain->name,
260 strlen(domain->name)+1);
264 /* We got a DC. Send a message to our parent to get it to
265 try and do the same. */
267 messaging_send_buf(winbind_messaging_context(),
268 pid_to_procid(parent_pid),
269 MSG_WINBIND_TRY_TO_GO_ONLINE,
270 (uint8 *)domain->name,
271 strlen(domain->name)+1);
275 /****************************************************************
276 Handler triggered if we're offline to try and detect a DC.
277 ****************************************************************/
279 static void check_domain_online_handler(struct event_context *ctx,
280 struct timed_event *te,
284 struct winbindd_domain *domain =
285 (struct winbindd_domain *)private_data;
287 DEBUG(10,("check_domain_online_handler: called for domain "
288 "%s (online = %s)\n", domain->name,
289 domain->online ? "True" : "False" ));
291 TALLOC_FREE(domain->check_online_event);
293 /* Are we still in "startup" mode ? */
295 if (domain->startup && (time_mono(NULL) > domain->startup_time + 30)) {
296 /* No longer in "startup" mode. */
297 DEBUG(10,("check_domain_online_handler: domain %s no longer in 'startup' mode.\n",
299 domain->startup = False;
302 /* We've been told to stay offline, so stay
305 if (get_global_winbindd_state_offline()) {
306 DEBUG(10,("check_domain_online_handler: domain %s remaining globally offline\n",
311 /* Fork a child to test if it can contact a DC.
312 If it can then send ourselves a message to
313 cause a reconnect. */
315 fork_child_dc_connect(domain);
318 /****************************************************************
319 If we're still offline setup the timeout check.
320 ****************************************************************/
322 static void calc_new_online_timeout_check(struct winbindd_domain *domain)
324 int wbr = lp_winbind_reconnect_delay();
326 if (domain->startup) {
327 domain->check_online_timeout = 10;
328 } else if (domain->check_online_timeout < wbr) {
329 domain->check_online_timeout = wbr;
333 /****************************************************************
334 Set domain offline and also add handler to put us back online
336 ****************************************************************/
338 void set_domain_offline(struct winbindd_domain *domain)
340 DEBUG(10,("set_domain_offline: called for domain %s\n",
343 TALLOC_FREE(domain->check_online_event);
345 if (domain->internal) {
346 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
351 domain->online = False;
353 /* Offline domains are always initialized. They're
354 re-initialized when they go back online. */
356 domain->initialized = True;
358 /* We only add the timeout handler that checks and
359 allows us to go back online when we've not
360 been told to remain offline. */
362 if (get_global_winbindd_state_offline()) {
363 DEBUG(10,("set_domain_offline: domain %s remaining globally offline\n",
368 /* If we're in startup mode, check again in 10 seconds, not in
369 lp_winbind_reconnect_delay() seconds (which is 30 seconds by default). */
371 calc_new_online_timeout_check(domain);
373 domain->check_online_event = event_add_timed(winbind_event_context(),
375 timeval_current_ofs(domain->check_online_timeout,0),
376 check_domain_online_handler,
379 /* The above *has* to succeed for winbindd to work. */
380 if (!domain->check_online_event) {
381 smb_panic("set_domain_offline: failed to add online handler");
384 DEBUG(10,("set_domain_offline: added event handler for domain %s\n",
387 /* Send an offline message to the idmap child when our
388 primary domain goes offline */
390 if ( domain->primary ) {
391 struct winbindd_child *idmap = idmap_child();
393 if ( idmap->pid != 0 ) {
394 messaging_send_buf(winbind_messaging_context(),
395 pid_to_procid(idmap->pid),
397 (uint8 *)domain->name,
398 strlen(domain->name)+1);
405 /****************************************************************
406 Set domain online - if allowed.
407 ****************************************************************/
409 static void set_domain_online(struct winbindd_domain *domain)
411 DEBUG(10,("set_domain_online: called for domain %s\n",
414 if (domain->internal) {
415 DEBUG(3,("set_domain_online: domain %s is internal - logic error.\n",
420 if (get_global_winbindd_state_offline()) {
421 DEBUG(10,("set_domain_online: domain %s remaining globally offline\n",
426 winbindd_set_locator_kdc_envs(domain);
428 /* If we are waiting to get a krb5 ticket, trigger immediately. */
429 ccache_regain_all_now();
431 /* Ok, we're out of any startup mode now... */
432 domain->startup = False;
434 if (domain->online == False) {
435 /* We were offline - now we're online. We default to
436 using the MS-RPC backend if we started offline,
437 and if we're going online for the first time we
438 should really re-initialize the backends and the
439 checks to see if we're talking to an AD or NT domain.
442 domain->initialized = False;
444 /* 'reconnect_methods' is the MS-RPC backend. */
445 if (domain->backend == &reconnect_methods) {
446 domain->backend = NULL;
450 /* Ensure we have no online timeout checks. */
451 domain->check_online_timeout = 0;
452 TALLOC_FREE(domain->check_online_event);
454 /* Ensure we ignore any pending child messages. */
455 messaging_deregister(winbind_messaging_context(),
456 MSG_WINBIND_TRY_TO_GO_ONLINE, NULL);
457 messaging_deregister(winbind_messaging_context(),
458 MSG_WINBIND_FAILED_TO_GO_ONLINE, NULL);
460 domain->online = True;
462 /* Send an online message to the idmap child when our
463 primary domain comes online */
465 if ( domain->primary ) {
466 struct winbindd_child *idmap = idmap_child();
468 if ( idmap->pid != 0 ) {
469 messaging_send_buf(winbind_messaging_context(),
470 pid_to_procid(idmap->pid),
472 (uint8 *)domain->name,
473 strlen(domain->name)+1);
480 /****************************************************************
481 Requested to set a domain online.
482 ****************************************************************/
484 void set_domain_online_request(struct winbindd_domain *domain)
488 DEBUG(10,("set_domain_online_request: called for domain %s\n",
491 if (get_global_winbindd_state_offline()) {
492 DEBUG(10,("set_domain_online_request: domain %s remaining globally offline\n",
497 if (domain->internal) {
498 DEBUG(10, ("set_domain_online_request: Internal domains are "
503 /* We've been told it's safe to go online and
504 try and connect to a DC. But I don't believe it
505 because network manager seems to lie.
506 Wait at least 5 seconds. Heuristics suck... */
511 /* Go into "startup" mode again. */
512 domain->startup_time = time_mono(NULL);
513 domain->startup = True;
517 if (!domain->check_online_event) {
518 /* If we've come from being globally offline we
519 don't have a check online event handler set.
520 We need to add one now we're trying to go
523 DEBUG(10,("set_domain_online_request: domain %s was globally offline.\n",
527 TALLOC_FREE(domain->check_online_event);
529 domain->check_online_event = event_add_timed(winbind_event_context(),
532 check_domain_online_handler,
535 /* The above *has* to succeed for winbindd to work. */
536 if (!domain->check_online_event) {
537 smb_panic("set_domain_online_request: failed to add online handler");
541 /****************************************************************
542 Add -ve connection cache entries for domain and realm.
543 ****************************************************************/
545 static void winbind_add_failed_connection_entry(
546 const struct winbindd_domain *domain,
550 add_failed_connection_entry(domain->name, server, result);
551 /* If this was the saf name for the last thing we talked to,
553 saf_delete(domain->name);
554 if (*domain->alt_name) {
555 add_failed_connection_entry(domain->alt_name, server, result);
556 saf_delete(domain->alt_name);
558 winbindd_unset_locator_kdc_env(domain);
561 /* Choose between anonymous or authenticated connections. We need to use
562 an authenticated connection if DCs have the RestrictAnonymous registry
563 entry set > 0, or the "Additional restrictions for anonymous
564 connections" set in the win2k Local Security Policy.
566 Caller to free() result in domain, username, password
569 static void cm_get_ipc_userpass(char **username, char **domain, char **password)
571 *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
572 *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
573 *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
575 if (*username && **username) {
577 if (!*domain || !**domain)
578 *domain = smb_xstrdup(lp_workgroup());
580 if (!*password || !**password)
581 *password = smb_xstrdup("");
583 DEBUG(3, ("cm_get_ipc_userpass: Retrieved auth-user from secrets.tdb [%s\\%s]\n",
584 *domain, *username));
587 DEBUG(3, ("cm_get_ipc_userpass: No auth-user defined\n"));
588 *username = smb_xstrdup("");
589 *domain = smb_xstrdup("");
590 *password = smb_xstrdup("");
594 static bool get_dc_name_via_netlogon(struct winbindd_domain *domain,
596 struct sockaddr_storage *dc_ss)
598 struct winbindd_domain *our_domain = NULL;
599 struct rpc_pipe_client *netlogon_pipe = NULL;
603 unsigned int orig_timeout;
604 const char *tmp = NULL;
606 struct dcerpc_binding_handle *b;
608 /* Hmmmm. We can only open one connection to the NETLOGON pipe at the
615 if (domain->primary) {
619 our_domain = find_our_domain();
621 if ((mem_ctx = talloc_init("get_dc_name_via_netlogon")) == NULL) {
625 result = cm_connect_netlogon(our_domain, &netlogon_pipe);
626 if (!NT_STATUS_IS_OK(result)) {
627 talloc_destroy(mem_ctx);
631 b = netlogon_pipe->binding_handle;
633 /* This call can take a long time - allow the server to time out.
634 35 seconds should do it. */
636 orig_timeout = rpccli_set_timeout(netlogon_pipe, 35000);
638 if (our_domain->active_directory) {
639 struct netr_DsRGetDCNameInfo *domain_info = NULL;
641 result = dcerpc_netr_DsRGetDCName(b,
650 if (NT_STATUS_IS_OK(result) && W_ERROR_IS_OK(werr)) {
652 mem_ctx, domain_info->dc_unc);
654 DEBUG(0, ("talloc_strdup failed\n"));
655 talloc_destroy(mem_ctx);
658 if (strlen(domain->alt_name) == 0) {
659 fstrcpy(domain->alt_name,
660 domain_info->domain_name);
662 if (strlen(domain->forest_name) == 0) {
663 fstrcpy(domain->forest_name,
664 domain_info->forest_name);
668 result = dcerpc_netr_GetAnyDCName(b, mem_ctx,
675 /* And restore our original timeout. */
676 rpccli_set_timeout(netlogon_pipe, orig_timeout);
678 if (!NT_STATUS_IS_OK(result)) {
679 DEBUG(10,("dcerpc_netr_GetAnyDCName failed: %s\n",
681 talloc_destroy(mem_ctx);
685 if (!W_ERROR_IS_OK(werr)) {
686 DEBUG(10,("dcerpc_netr_GetAnyDCName failed: %s\n",
688 talloc_destroy(mem_ctx);
692 /* dcerpc_netr_GetAnyDCName gives us a name with \\ */
693 p = strip_hostname(tmp);
697 talloc_destroy(mem_ctx);
699 DEBUG(10,("dcerpc_netr_GetAnyDCName returned %s\n", dcname));
701 if (!resolve_name(dcname, dc_ss, 0x20, true)) {
709 * Helper function to assemble trust password and account name
711 static NTSTATUS get_trust_creds(const struct winbindd_domain *domain,
712 char **machine_password,
713 char **machine_account,
714 char **machine_krb5_principal)
716 const char *account_name;
717 const char *name = NULL;
719 /* If we are a DC and this is not our own domain */
724 struct winbindd_domain *our_domain = find_our_domain();
727 return NT_STATUS_INVALID_SERVER_STATE;
729 name = our_domain->name;
732 if (!get_trust_pw_clear(name, machine_password,
733 &account_name, NULL))
735 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
738 if ((machine_account != NULL) &&
739 (asprintf(machine_account, "%s$", account_name) == -1))
741 return NT_STATUS_NO_MEMORY;
744 /* For now assume our machine account only exists in our domain */
746 if (machine_krb5_principal != NULL)
748 struct winbindd_domain *our_domain = find_our_domain();
751 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
754 if (asprintf(machine_krb5_principal, "%s$@%s",
755 account_name, our_domain->alt_name) == -1)
757 return NT_STATUS_NO_MEMORY;
760 strupper_m(*machine_krb5_principal);
766 /************************************************************************
767 Given a fd with a just-connected TCP connection to a DC, open a connection
769 ************************************************************************/
771 static NTSTATUS cm_prepare_connection(const struct winbindd_domain *domain,
773 const char *controller,
774 struct cli_state **cli,
777 char *machine_password = NULL;
778 char *machine_krb5_principal = NULL;
779 char *machine_account = NULL;
780 char *ipc_username = NULL;
781 char *ipc_domain = NULL;
782 char *ipc_password = NULL;
784 struct named_mutex *mutex;
786 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
788 struct sockaddr peeraddr;
789 socklen_t peeraddr_len;
791 struct sockaddr_in *peeraddr_in =
792 (struct sockaddr_in *)(void *)&peeraddr;
794 DEBUG(10,("cm_prepare_connection: connecting to DC %s for domain %s\n",
795 controller, domain->name ));
799 mutex = grab_named_mutex(talloc_tos(), controller,
800 WINBIND_SERVER_MUTEX_WAIT_TIME);
802 DEBUG(0,("cm_prepare_connection: mutex grab failed for %s\n",
804 result = NT_STATUS_POSSIBLE_DEADLOCK;
808 if ((*cli = cli_initialise()) == NULL) {
809 DEBUG(1, ("Could not cli_initialize\n"));
810 result = NT_STATUS_NO_MEMORY;
814 (*cli)->timeout = 10000; /* 10 seconds */
816 fstrcpy((*cli)->desthost, controller);
817 (*cli)->use_kerberos = True;
819 peeraddr_len = sizeof(peeraddr);
821 if ((getpeername((*cli)->fd, &peeraddr, &peeraddr_len) != 0)) {
822 DEBUG(0,("cm_prepare_connection: getpeername failed with: %s\n",
824 result = NT_STATUS_UNSUCCESSFUL;
828 if ((peeraddr_len != sizeof(struct sockaddr_in))
830 && (peeraddr_len != sizeof(struct sockaddr_in6))
833 DEBUG(0,("cm_prepare_connection: got unexpected peeraddr len %d\n",
835 result = NT_STATUS_UNSUCCESSFUL;
839 if ((peeraddr_in->sin_family != PF_INET)
841 && (peeraddr_in->sin_family != PF_INET6)
844 DEBUG(0,("cm_prepare_connection: got unexpected family %d\n",
845 peeraddr_in->sin_family));
846 result = NT_STATUS_UNSUCCESSFUL;
850 result = cli_negprot(*cli);
852 if (!NT_STATUS_IS_OK(result)) {
853 DEBUG(1, ("cli_negprot failed: %s\n", nt_errstr(result)));
857 if (!is_dc_trusted_domain_situation(domain->name) &&
858 (*cli)->protocol >= PROTOCOL_NT1 &&
859 (*cli)->capabilities & CAP_EXTENDED_SECURITY)
861 ADS_STATUS ads_status;
863 result = get_trust_creds(domain, &machine_password,
865 &machine_krb5_principal);
866 if (!NT_STATUS_IS_OK(result)) {
870 if (lp_security() == SEC_ADS) {
872 /* Try a krb5 session */
874 (*cli)->use_kerberos = True;
875 DEBUG(5, ("connecting to %s from %s with kerberos principal "
876 "[%s] and realm [%s]\n", controller, global_myname(),
877 machine_krb5_principal, domain->alt_name));
879 winbindd_set_locator_kdc_envs(domain);
881 ads_status = cli_session_setup_spnego(*cli,
882 machine_krb5_principal,
887 if (!ADS_ERR_OK(ads_status)) {
888 DEBUG(4,("failed kerberos session setup with %s\n",
889 ads_errstr(ads_status)));
892 result = ads_ntstatus(ads_status);
893 if (NT_STATUS_IS_OK(result)) {
894 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
895 result = cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
896 if (!NT_STATUS_IS_OK(result)) {
899 goto session_setup_done;
903 /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the machine account. */
904 (*cli)->use_kerberos = False;
906 DEBUG(5, ("connecting to %s from %s with username "
907 "[%s]\\[%s]\n", controller, global_myname(),
908 lp_workgroup(), machine_account));
910 ads_status = cli_session_setup_spnego(*cli,
915 if (!ADS_ERR_OK(ads_status)) {
916 DEBUG(4, ("authenticated session setup failed with %s\n",
917 ads_errstr(ads_status)));
920 result = ads_ntstatus(ads_status);
921 if (NT_STATUS_IS_OK(result)) {
922 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
923 result = cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
924 if (!NT_STATUS_IS_OK(result)) {
927 goto session_setup_done;
931 /* Fall back to non-kerberos session setup with auth_user */
933 (*cli)->use_kerberos = False;
935 cm_get_ipc_userpass(&ipc_username, &ipc_domain, &ipc_password);
937 if ((((*cli)->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) != 0) &&
938 (strlen(ipc_username) > 0)) {
940 /* Only try authenticated if we have a username */
942 DEBUG(5, ("connecting to %s from %s with username "
943 "[%s]\\[%s]\n", controller, global_myname(),
944 ipc_domain, ipc_username));
946 if (NT_STATUS_IS_OK(cli_session_setup(
948 ipc_password, strlen(ipc_password)+1,
949 ipc_password, strlen(ipc_password)+1,
951 /* Successful logon with given username. */
952 result = cli_init_creds(*cli, ipc_username, ipc_domain, ipc_password);
953 if (!NT_STATUS_IS_OK(result)) {
956 goto session_setup_done;
958 DEBUG(4, ("authenticated session setup with user %s\\%s failed.\n",
959 ipc_domain, ipc_username ));
965 /* Fall back to anonymous connection, this might fail later */
966 DEBUG(10,("cm_prepare_connection: falling back to anonymous "
967 "connection for DC %s\n",
970 if (NT_STATUS_IS_OK(cli_session_setup(*cli, "", NULL, 0,
972 DEBUG(5, ("Connected anonymously\n"));
973 result = cli_init_creds(*cli, "", "", "");
974 if (!NT_STATUS_IS_OK(result)) {
977 goto session_setup_done;
980 result = cli_nt_error(*cli);
982 if (NT_STATUS_IS_OK(result))
983 result = NT_STATUS_UNSUCCESSFUL;
985 /* We can't session setup */
991 /* cache the server name for later connections */
993 saf_store( domain->name, (*cli)->desthost );
994 if (domain->alt_name && (*cli)->use_kerberos) {
995 saf_store( domain->alt_name, (*cli)->desthost );
998 winbindd_set_locator_kdc_envs(domain);
1000 result = cli_tcon_andx(*cli, "IPC$", "IPC", "", 0);
1002 if (!NT_STATUS_IS_OK(result)) {
1003 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(result)));
1010 /* set the domain if empty; needed for schannel connections */
1011 if ( !(*cli)->domain[0] ) {
1012 result = cli_set_domain((*cli), domain->name);
1013 if (!NT_STATUS_IS_OK(result)) {
1018 result = NT_STATUS_OK;
1022 SAFE_FREE(machine_account);
1023 SAFE_FREE(machine_password);
1024 SAFE_FREE(machine_krb5_principal);
1025 SAFE_FREE(ipc_username);
1026 SAFE_FREE(ipc_domain);
1027 SAFE_FREE(ipc_password);
1029 if (!NT_STATUS_IS_OK(result)) {
1030 winbind_add_failed_connection_entry(domain, controller, result);
1031 if ((*cli) != NULL) {
1040 /*******************************************************************
1041 Add a dcname and sockaddr_storage pair to the end of a dc_name_ip
1044 Keeps the list unique by not adding duplicate entries.
1046 @param[in] mem_ctx talloc memory context to allocate from
1047 @param[in] domain_name domain of the DC
1048 @param[in] dcname name of the DC to add to the list
1049 @param[in] pss Internet address and port pair to add to the list
1050 @param[in,out] dcs array of dc_name_ip structures to add to
1051 @param[in,out] num_dcs number of dcs returned in the dcs array
1052 @return true if the list was added to, false otherwise
1053 *******************************************************************/
1055 static bool add_one_dc_unique(TALLOC_CTX *mem_ctx, const char *domain_name,
1056 const char *dcname, struct sockaddr_storage *pss,
1057 struct dc_name_ip **dcs, int *num)
1061 if (!NT_STATUS_IS_OK(check_negative_conn_cache(domain_name, dcname))) {
1062 DEBUG(10, ("DC %s was in the negative conn cache\n", dcname));
1066 /* Make sure there's no duplicates in the list */
1067 for (i=0; i<*num; i++)
1069 (struct sockaddr *)(void *)&(*dcs)[i].ss,
1070 (struct sockaddr *)(void *)pss))
1073 *dcs = TALLOC_REALLOC_ARRAY(mem_ctx, *dcs, struct dc_name_ip, (*num)+1);
1078 fstrcpy((*dcs)[*num].name, dcname);
1079 (*dcs)[*num].ss = *pss;
1084 static bool add_sockaddr_to_array(TALLOC_CTX *mem_ctx,
1085 struct sockaddr_storage *pss, uint16 port,
1086 struct sockaddr_storage **addrs, int *num)
1088 *addrs = TALLOC_REALLOC_ARRAY(mem_ctx, *addrs, struct sockaddr_storage, (*num)+1);
1090 if (*addrs == NULL) {
1095 (*addrs)[*num] = *pss;
1096 set_sockaddr_port((struct sockaddr *)&(*addrs)[*num], port);
1102 /*******************************************************************
1103 convert an ip to a name
1104 *******************************************************************/
1106 static bool dcip_to_name(TALLOC_CTX *mem_ctx,
1107 const struct winbindd_domain *domain,
1108 struct sockaddr_storage *pss,
1111 struct ip_service ip_list;
1112 uint32_t nt_version = NETLOGON_NT_VERSION_1;
1114 const char *dc_name;
1120 /* For active directory servers, try to get the ldap server name.
1121 None of these failures should be considered critical for now */
1123 if (lp_security() == SEC_ADS) {
1125 ADS_STATUS ads_status;
1126 char addr[INET6_ADDRSTRLEN];
1128 print_sockaddr(addr, sizeof(addr), pss);
1130 ads = ads_init(domain->alt_name, domain->name, addr);
1131 ads->auth.flags |= ADS_AUTH_NO_BIND;
1133 ads_status = ads_connect(ads);
1134 if (ADS_ERR_OK(ads_status)) {
1135 /* We got a cldap packet. */
1136 fstrcpy(name, ads->config.ldap_server_name);
1137 namecache_store(name, 0x20, 1, &ip_list);
1139 DEBUG(10,("dcip_to_name: flags = 0x%x\n", (unsigned int)ads->config.flags));
1141 if (domain->primary && (ads->config.flags & NBT_SERVER_KDC)) {
1142 if (ads_closest_dc(ads)) {
1143 char *sitename = sitename_fetch(ads->config.realm);
1145 /* We're going to use this KDC for this realm/domain.
1146 If we are using sites, then force the krb5 libs
1149 create_local_private_krb5_conf_for_domain(domain->alt_name,
1155 SAFE_FREE(sitename);
1157 /* use an off site KDC */
1158 create_local_private_krb5_conf_for_domain(domain->alt_name,
1164 winbindd_set_locator_kdc_envs(domain);
1166 /* Ensure we contact this DC also. */
1167 saf_store( domain->name, name);
1168 saf_store( domain->alt_name, name);
1171 ads_destroy( &ads );
1175 ads_destroy( &ads );
1179 status = nbt_getdc(winbind_messaging_context(), pss, domain->name,
1180 &domain->sid, nt_version, mem_ctx, &nt_version,
1182 if (NT_STATUS_IS_OK(status)) {
1183 fstrcpy(name, dc_name);
1184 namecache_store(name, 0x20, 1, &ip_list);
1188 /* try node status request */
1190 if ( name_status_find(domain->name, 0x1c, 0x20, pss, name) ) {
1191 namecache_store(name, 0x20, 1, &ip_list);
1197 /*******************************************************************
1198 Retrieve a list of IP addresses for domain controllers.
1200 The array is sorted in the preferred connection order.
1202 @param[in] mem_ctx talloc memory context to allocate from
1203 @param[in] domain domain to retrieve DCs for
1204 @param[out] dcs array of dcs that will be returned
1205 @param[out] num_dcs number of dcs returned in the dcs array
1207 *******************************************************************/
1209 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
1210 struct dc_name_ip **dcs, int *num_dcs)
1213 struct sockaddr_storage ss;
1214 struct ip_service *ip_list = NULL;
1215 int iplist_size = 0;
1218 enum security_types sec = (enum security_types)lp_security();
1220 is_our_domain = strequal(domain->name, lp_workgroup());
1222 /* If not our domain, get the preferred DC, by asking our primary DC */
1224 && get_dc_name_via_netlogon(domain, dcname, &ss)
1225 && add_one_dc_unique(mem_ctx, domain->name, dcname, &ss, dcs,
1228 char addr[INET6_ADDRSTRLEN];
1229 print_sockaddr(addr, sizeof(addr), &ss);
1230 DEBUG(10, ("Retrieved DC %s at %s via netlogon\n",
1235 if (sec == SEC_ADS) {
1236 char *sitename = NULL;
1238 /* We need to make sure we know the local site before
1239 doing any DNS queries, as this will restrict the
1240 get_sorted_dc_list() call below to only fetching
1241 DNS records for the correct site. */
1243 /* Find any DC to get the site record.
1244 We deliberately don't care about the
1247 get_dc_name(domain->name, domain->alt_name, dcname, &ss);
1249 sitename = sitename_fetch(domain->alt_name);
1252 /* Do the site-specific AD dns lookup first. */
1253 get_sorted_dc_list(domain->alt_name, sitename, &ip_list,
1254 &iplist_size, True);
1256 /* Add ips to the DC array. We don't look up the name
1257 of the DC in this function, but we fill in the char*
1258 of the ip now to make the failed connection cache
1260 for ( i=0; i<iplist_size; i++ ) {
1261 char addr[INET6_ADDRSTRLEN];
1262 print_sockaddr(addr, sizeof(addr),
1264 add_one_dc_unique(mem_ctx,
1273 SAFE_FREE(sitename);
1277 /* Now we add DCs from the main AD DNS lookup. */
1278 get_sorted_dc_list(domain->alt_name, NULL, &ip_list,
1279 &iplist_size, True);
1281 for ( i=0; i<iplist_size; i++ ) {
1282 char addr[INET6_ADDRSTRLEN];
1283 print_sockaddr(addr, sizeof(addr),
1285 add_one_dc_unique(mem_ctx,
1297 /* Try standard netbios queries if no ADS */
1298 if (*num_dcs == 0) {
1299 get_sorted_dc_list(domain->name, NULL, &ip_list, &iplist_size,
1302 for ( i=0; i<iplist_size; i++ ) {
1303 char addr[INET6_ADDRSTRLEN];
1304 print_sockaddr(addr, sizeof(addr),
1306 add_one_dc_unique(mem_ctx,
1321 /*******************************************************************
1322 Find and make a connection to a DC in the given domain.
1324 @param[in] mem_ctx talloc memory context to allocate from
1325 @param[in] domain domain to find a dc in
1326 @param[out] dcname NetBIOS or FQDN of DC that's connected to
1327 @param[out] pss DC Internet address and port
1328 @param[out] fd fd of the open socket connected to the newly found dc
1329 @return true when a DC connection is made, false otherwise
1330 *******************************************************************/
1332 static bool find_new_dc(TALLOC_CTX *mem_ctx,
1333 struct winbindd_domain *domain,
1334 fstring dcname, struct sockaddr_storage *pss, int *fd)
1336 struct dc_name_ip *dcs = NULL;
1339 const char **dcnames = NULL;
1340 int num_dcnames = 0;
1342 struct sockaddr_storage *addrs = NULL;
1353 if (!get_dcs(mem_ctx, domain, &dcs, &num_dcs) || (num_dcs == 0))
1356 for (i=0; i<num_dcs; i++) {
1358 if (!add_string_to_array(mem_ctx, dcs[i].name,
1359 &dcnames, &num_dcnames)) {
1362 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, 445,
1363 &addrs, &num_addrs)) {
1368 if ((num_dcnames == 0) || (num_dcnames != num_addrs))
1371 if ((addrs == NULL) || (dcnames == NULL))
1374 status = smbsock_any_connect(addrs, dcnames, NULL, NULL, NULL,
1375 num_addrs, 0, fd, &fd_index, NULL);
1376 if (!NT_STATUS_IS_OK(status)) {
1377 for (i=0; i<num_dcs; i++) {
1378 char ab[INET6_ADDRSTRLEN];
1379 print_sockaddr(ab, sizeof(ab), &dcs[i].ss);
1380 DEBUG(10, ("find_new_dc: smbsock_any_connect failed for "
1381 "domain %s address %s. Error was %s\n",
1382 domain->name, ab, nt_errstr(status) ));
1383 winbind_add_failed_connection_entry(domain,
1384 dcs[i].name, NT_STATUS_UNSUCCESSFUL);
1389 *pss = addrs[fd_index];
1391 if (*dcnames[fd_index] != '\0' && !is_ipaddress(dcnames[fd_index])) {
1392 /* Ok, we've got a name for the DC */
1393 fstrcpy(dcname, dcnames[fd_index]);
1397 /* Try to figure out the name */
1398 if (dcip_to_name(mem_ctx, domain, pss, dcname)) {
1402 /* We can not continue without the DC's name */
1403 winbind_add_failed_connection_entry(domain, dcs[fd_index].name,
1404 NT_STATUS_UNSUCCESSFUL);
1406 /* Throw away all arrays as we're doing this again. */
1410 TALLOC_FREE(dcnames);
1422 static char *current_dc_key(TALLOC_CTX *mem_ctx, const char *domain_name)
1424 return talloc_asprintf_strupper_m(mem_ctx, "CURRENT_DCNAME/%s",
1428 static void store_current_dc_in_gencache(const char *domain_name,
1429 const char *dc_name,
1430 struct cli_state *cli)
1432 char addr[INET6_ADDRSTRLEN];
1438 if (cli->fd == -1) {
1441 get_peer_addr(cli->fd, addr, sizeof(addr));
1443 key = current_dc_key(talloc_tos(), domain_name);
1448 value = talloc_asprintf(talloc_tos(), "%s %s", addr, dc_name);
1449 if (value == NULL) {
1453 gencache_set(key, value, 0x7fffffff);
1459 bool fetch_current_dc_from_gencache(TALLOC_CTX *mem_ctx,
1460 const char *domain_name,
1461 char **p_dc_name, char **p_dc_ip)
1463 char *key, *value, *p;
1465 char *dc_name = NULL;
1468 key = current_dc_key(talloc_tos(), domain_name);
1472 if (!gencache_get(key, &value, NULL)) {
1475 p = strchr(value, ' ');
1479 dc_ip = talloc_strndup(mem_ctx, value, p - value);
1480 if (dc_ip == NULL) {
1483 dc_name = talloc_strdup(mem_ctx, p+1);
1484 if (dc_name == NULL) {
1488 if (p_dc_ip != NULL) {
1492 if (p_dc_name != NULL) {
1493 *p_dc_name = dc_name;
1498 TALLOC_FREE(dc_name);
1504 static NTSTATUS cm_open_connection(struct winbindd_domain *domain,
1505 struct winbindd_cm_conn *new_conn)
1507 TALLOC_CTX *mem_ctx;
1509 char *saf_servername = saf_fetch( domain->name );
1512 if ((mem_ctx = talloc_init("cm_open_connection")) == NULL) {
1513 SAFE_FREE(saf_servername);
1514 set_domain_offline(domain);
1515 return NT_STATUS_NO_MEMORY;
1518 /* we have to check the server affinity cache here since
1519 later we select a DC based on response time and not preference */
1521 /* Check the negative connection cache
1522 before talking to it. It going down may have
1523 triggered the reconnection. */
1525 if ( saf_servername && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, saf_servername))) {
1527 DEBUG(10,("cm_open_connection: saf_servername is '%s' for domain %s\n",
1528 saf_servername, domain->name ));
1530 /* convert an ip address to a name */
1531 if (is_ipaddress( saf_servername ) ) {
1533 struct sockaddr_storage ss;
1535 if (!interpret_string_addr(&ss, saf_servername,
1537 return NT_STATUS_UNSUCCESSFUL;
1539 if (dcip_to_name(mem_ctx, domain, &ss, saf_name )) {
1540 fstrcpy( domain->dcname, saf_name );
1542 winbind_add_failed_connection_entry(
1543 domain, saf_servername,
1544 NT_STATUS_UNSUCCESSFUL);
1547 fstrcpy( domain->dcname, saf_servername );
1550 SAFE_FREE( saf_servername );
1553 for (retries = 0; retries < 3; retries++) {
1557 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1559 DEBUG(10,("cm_open_connection: dcname is '%s' for domain %s\n",
1560 domain->dcname, domain->name ));
1563 && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, domain->dcname))
1564 && (resolve_name(domain->dcname, &domain->dcaddr, 0x20, true)))
1568 status = smbsock_connect(&domain->dcaddr, 0,
1571 if (!NT_STATUS_IS_OK(status)) {
1577 && !find_new_dc(mem_ctx, domain, domain->dcname, &domain->dcaddr, &fd))
1579 /* This is the one place where we will
1580 set the global winbindd offline state
1581 to true, if a "WINBINDD_OFFLINE" entry
1582 is found in the winbindd cache. */
1583 set_global_winbindd_state_offline();
1587 new_conn->cli = NULL;
1589 result = cm_prepare_connection(domain, fd, domain->dcname,
1590 &new_conn->cli, &retry);
1596 if (NT_STATUS_IS_OK(result)) {
1598 winbindd_set_locator_kdc_envs(domain);
1600 if (domain->online == False) {
1601 /* We're changing state from offline to online. */
1602 set_global_winbindd_state_online();
1604 set_domain_online(domain);
1607 * Much as I hate global state, this seems to be the point
1608 * where we can be certain that we have a proper connection to
1609 * a DC. wbinfo --dc-info needs that information, store it in
1610 * gencache with a looong timeout. This will need revisiting
1611 * once we start to connect to multiple DCs, wbcDcInfo is
1612 * already prepared for that.
1614 store_current_dc_in_gencache(domain->name, domain->dcname,
1617 /* Ensure we setup the retry handler. */
1618 set_domain_offline(domain);
1621 talloc_destroy(mem_ctx);
1625 /* Close down all open pipes on a connection. */
1627 void invalidate_cm_connection(struct winbindd_cm_conn *conn)
1631 /* We're closing down a possibly dead
1632 connection. Don't have impossibly long (10s) timeouts. */
1635 cli_set_timeout(conn->cli, 1000); /* 1 second. */
1638 if (conn->samr_pipe != NULL) {
1639 if (is_valid_policy_hnd(&conn->sam_connect_handle)) {
1640 dcerpc_samr_Close(conn->samr_pipe->binding_handle,
1642 &conn->sam_connect_handle,
1645 TALLOC_FREE(conn->samr_pipe);
1646 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1648 cli_set_timeout(conn->cli, 500);
1652 if (conn->lsa_pipe != NULL) {
1653 if (is_valid_policy_hnd(&conn->lsa_policy)) {
1654 dcerpc_lsa_Close(conn->lsa_pipe->binding_handle,
1659 TALLOC_FREE(conn->lsa_pipe);
1660 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1662 cli_set_timeout(conn->cli, 500);
1666 if (conn->lsa_pipe_tcp != NULL) {
1667 if (is_valid_policy_hnd(&conn->lsa_policy)) {
1668 dcerpc_lsa_Close(conn->lsa_pipe->binding_handle,
1673 TALLOC_FREE(conn->lsa_pipe_tcp);
1674 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1676 cli_set_timeout(conn->cli, 500);
1680 if (conn->netlogon_pipe != NULL) {
1681 TALLOC_FREE(conn->netlogon_pipe);
1682 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1684 cli_set_timeout(conn->cli, 500);
1689 cli_shutdown(conn->cli);
1695 void close_conns_after_fork(void)
1697 struct winbindd_domain *domain;
1699 for (domain = domain_list(); domain; domain = domain->next) {
1700 struct cli_state *cli = domain->conn.cli;
1703 * first close the low level SMB TCP connection
1704 * so that we don't generate any SMBclose
1705 * requests in invalidate_cm_connection()
1707 if (cli && cli->fd != -1) {
1708 close(domain->conn.cli->fd);
1709 domain->conn.cli->fd = -1;
1712 invalidate_cm_connection(&domain->conn);
1716 static bool connection_ok(struct winbindd_domain *domain)
1720 ok = cli_state_is_connected(domain->conn.cli);
1722 DEBUG(3, ("connection_ok: Connection to %s for domain %s is not connected\n",
1723 domain->dcname, domain->name));
1727 if (domain->online == False) {
1728 DEBUG(3, ("connection_ok: Domain %s is offline\n", domain->name));
1735 /* Initialize a new connection up to the RPC BIND.
1736 Bypass online status check so always does network calls. */
1738 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain)
1742 /* Internal connections never use the network. */
1743 if (domain->internal) {
1744 domain->initialized = True;
1745 return NT_STATUS_OK;
1748 if (!winbindd_can_contact_domain(domain)) {
1749 invalidate_cm_connection(&domain->conn);
1750 domain->initialized = True;
1751 return NT_STATUS_OK;
1754 if (connection_ok(domain)) {
1755 if (!domain->initialized) {
1756 set_dc_type_and_flags(domain);
1758 return NT_STATUS_OK;
1761 invalidate_cm_connection(&domain->conn);
1763 result = cm_open_connection(domain, &domain->conn);
1765 if (NT_STATUS_IS_OK(result) && !domain->initialized) {
1766 set_dc_type_and_flags(domain);
1772 NTSTATUS init_dc_connection(struct winbindd_domain *domain)
1774 if (domain->internal) {
1775 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1778 if (domain->initialized && !domain->online) {
1779 /* We check for online status elsewhere. */
1780 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1783 return init_dc_connection_network(domain);
1786 static NTSTATUS init_dc_connection_rpc(struct winbindd_domain *domain)
1790 status = init_dc_connection(domain);
1791 if (!NT_STATUS_IS_OK(status)) {
1795 if (!domain->internal && domain->conn.cli == NULL) {
1796 /* happens for trusted domains without inbound trust */
1797 return NT_STATUS_TRUSTED_DOMAIN_FAILURE;
1800 return NT_STATUS_OK;
1803 /******************************************************************************
1804 Set the trust flags (direction and forest location) for a domain
1805 ******************************************************************************/
1807 static bool set_dc_type_and_flags_trustinfo( struct winbindd_domain *domain )
1809 struct winbindd_domain *our_domain;
1810 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1812 struct netr_DomainTrustList trusts;
1814 uint32 flags = (NETR_TRUST_FLAG_IN_FOREST |
1815 NETR_TRUST_FLAG_OUTBOUND |
1816 NETR_TRUST_FLAG_INBOUND);
1817 struct rpc_pipe_client *cli;
1818 TALLOC_CTX *mem_ctx = NULL;
1819 struct dcerpc_binding_handle *b;
1821 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s\n", domain->name ));
1823 /* Our primary domain doesn't need to worry about trust flags.
1824 Force it to go through the network setup */
1825 if ( domain->primary ) {
1829 our_domain = find_our_domain();
1831 if ( !connection_ok(our_domain) ) {
1832 DEBUG(3,("set_dc_type_and_flags_trustinfo: No connection to our domain!\n"));
1836 /* This won't work unless our domain is AD */
1838 if ( !our_domain->active_directory ) {
1842 /* Use DsEnumerateDomainTrusts to get us the trust direction
1845 result = cm_connect_netlogon(our_domain, &cli);
1847 if (!NT_STATUS_IS_OK(result)) {
1848 DEBUG(5, ("set_dc_type_and_flags_trustinfo: Could not open "
1849 "a connection to %s for PIPE_NETLOGON (%s)\n",
1850 domain->name, nt_errstr(result)));
1854 b = cli->binding_handle;
1856 if ( (mem_ctx = talloc_init("set_dc_type_and_flags_trustinfo")) == NULL ) {
1857 DEBUG(0,("set_dc_type_and_flags_trustinfo: talloc_init() failed!\n"));
1861 result = dcerpc_netr_DsrEnumerateDomainTrusts(b, mem_ctx,
1866 if (!NT_STATUS_IS_OK(result)) {
1867 DEBUG(0,("set_dc_type_and_flags_trustinfo: "
1868 "failed to query trusted domain list: %s\n",
1869 nt_errstr(result)));
1870 talloc_destroy(mem_ctx);
1873 if (!W_ERROR_IS_OK(werr)) {
1874 DEBUG(0,("set_dc_type_and_flags_trustinfo: "
1875 "failed to query trusted domain list: %s\n",
1877 talloc_destroy(mem_ctx);
1881 /* Now find the domain name and get the flags */
1883 for ( i=0; i<trusts.count; i++ ) {
1884 if ( strequal( domain->name, trusts.array[i].netbios_name) ) {
1885 domain->domain_flags = trusts.array[i].trust_flags;
1886 domain->domain_type = trusts.array[i].trust_type;
1887 domain->domain_trust_attribs = trusts.array[i].trust_attributes;
1889 if ( domain->domain_type == NETR_TRUST_TYPE_UPLEVEL )
1890 domain->active_directory = True;
1892 /* This flag is only set if the domain is *our*
1893 primary domain and the primary domain is in
1896 domain->native_mode = (domain->domain_flags & NETR_TRUST_FLAG_NATIVE);
1898 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s is %sin "
1899 "native mode.\n", domain->name,
1900 domain->native_mode ? "" : "NOT "));
1902 DEBUG(5,("set_dc_type_and_flags_trustinfo: domain %s is %s"
1903 "running active directory.\n", domain->name,
1904 domain->active_directory ? "" : "NOT "));
1907 domain->initialized = True;
1913 talloc_destroy( mem_ctx );
1915 return domain->initialized;
1918 /******************************************************************************
1919 We can 'sense' certain things about the DC by it's replies to certain
1922 This tells us if this particular remote server is Active Directory, and if it
1924 ******************************************************************************/
1926 static void set_dc_type_and_flags_connect( struct winbindd_domain *domain )
1928 NTSTATUS status, result;
1930 TALLOC_CTX *mem_ctx = NULL;
1931 struct rpc_pipe_client *cli = NULL;
1932 struct policy_handle pol;
1933 union dssetup_DsRoleInfo info;
1934 union lsa_PolicyInformation *lsa_info = NULL;
1936 if (!connection_ok(domain)) {
1940 mem_ctx = talloc_init("set_dc_type_and_flags on domain %s\n",
1943 DEBUG(1, ("set_dc_type_and_flags_connect: talloc_init() failed\n"));
1947 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s\n", domain->name ));
1949 status = cli_rpc_pipe_open_noauth(domain->conn.cli,
1950 &ndr_table_dssetup.syntax_id,
1953 if (!NT_STATUS_IS_OK(status)) {
1954 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1955 "PI_DSSETUP on domain %s: (%s)\n",
1956 domain->name, nt_errstr(status)));
1958 /* if this is just a non-AD domain we need to continue
1959 * identifying so that we can in the end return with
1960 * domain->initialized = True - gd */
1965 status = dcerpc_dssetup_DsRoleGetPrimaryDomainInformation(cli->binding_handle, mem_ctx,
1966 DS_ROLE_BASIC_INFORMATION,
1971 if (NT_STATUS_IS_OK(status)) {
1972 result = werror_to_ntstatus(werr);
1974 if (!NT_STATUS_IS_OK(status)) {
1975 DEBUG(5, ("set_dc_type_and_flags_connect: rpccli_ds_getprimarydominfo "
1976 "on domain %s failed: (%s)\n",
1977 domain->name, nt_errstr(status)));
1979 /* older samba3 DCs will return DCERPC_FAULT_OP_RNG_ERROR for
1980 * every opcode on the DSSETUP pipe, continue with
1981 * no_dssetup mode here as well to get domain->initialized
1984 if (NT_STATUS_V(status) == DCERPC_FAULT_OP_RNG_ERROR) {
1988 TALLOC_FREE(mem_ctx);
1992 if ((info.basic.flags & DS_ROLE_PRIMARY_DS_RUNNING) &&
1993 !(info.basic.flags & DS_ROLE_PRIMARY_DS_MIXED_MODE)) {
1994 domain->native_mode = True;
1996 domain->native_mode = False;
2000 status = cli_rpc_pipe_open_noauth(domain->conn.cli,
2001 &ndr_table_lsarpc.syntax_id, &cli);
2003 if (!NT_STATUS_IS_OK(status)) {
2004 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
2005 "PI_LSARPC on domain %s: (%s)\n",
2006 domain->name, nt_errstr(status)));
2008 TALLOC_FREE(mem_ctx);
2012 status = rpccli_lsa_open_policy2(cli, mem_ctx, True,
2013 SEC_FLAG_MAXIMUM_ALLOWED, &pol);
2015 if (NT_STATUS_IS_OK(status)) {
2016 /* This particular query is exactly what Win2k clients use
2017 to determine that the DC is active directory */
2018 status = dcerpc_lsa_QueryInfoPolicy2(cli->binding_handle, mem_ctx,
2020 LSA_POLICY_INFO_DNS,
2025 if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
2026 domain->active_directory = True;
2028 if (lsa_info->dns.name.string) {
2029 fstrcpy(domain->name, lsa_info->dns.name.string);
2032 if (lsa_info->dns.dns_domain.string) {
2033 fstrcpy(domain->alt_name,
2034 lsa_info->dns.dns_domain.string);
2037 /* See if we can set some domain trust flags about
2040 if (lsa_info->dns.dns_forest.string) {
2041 fstrcpy(domain->forest_name,
2042 lsa_info->dns.dns_forest.string);
2044 if (strequal(domain->forest_name, domain->alt_name)) {
2045 domain->domain_flags |= NETR_TRUST_FLAG_TREEROOT;
2049 if (lsa_info->dns.sid) {
2050 sid_copy(&domain->sid, lsa_info->dns.sid);
2053 domain->active_directory = False;
2055 status = rpccli_lsa_open_policy(cli, mem_ctx, True,
2056 SEC_FLAG_MAXIMUM_ALLOWED,
2059 if (!NT_STATUS_IS_OK(status)) {
2063 status = dcerpc_lsa_QueryInfoPolicy(cli->binding_handle, mem_ctx,
2065 LSA_POLICY_INFO_ACCOUNT_DOMAIN,
2068 if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
2070 if (lsa_info->account_domain.name.string) {
2071 fstrcpy(domain->name,
2072 lsa_info->account_domain.name.string);
2075 if (lsa_info->account_domain.sid) {
2076 sid_copy(&domain->sid, lsa_info->account_domain.sid);
2082 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s is %sin native mode.\n",
2083 domain->name, domain->native_mode ? "" : "NOT "));
2085 DEBUG(5,("set_dc_type_and_flags_connect: domain %s is %srunning active directory.\n",
2086 domain->name, domain->active_directory ? "" : "NOT "));
2088 domain->can_do_ncacn_ip_tcp = domain->active_directory;
2092 TALLOC_FREE(mem_ctx);
2094 domain->initialized = True;
2097 /**********************************************************************
2098 Set the domain_flags (trust attributes, domain operating modes, etc...
2099 ***********************************************************************/
2101 static void set_dc_type_and_flags( struct winbindd_domain *domain )
2103 /* we always have to contact our primary domain */
2105 if ( domain->primary ) {
2106 DEBUG(10,("set_dc_type_and_flags: setting up flags for "
2107 "primary domain\n"));
2108 set_dc_type_and_flags_connect( domain );
2112 /* Use our DC to get the information if possible */
2114 if ( !set_dc_type_and_flags_trustinfo( domain ) ) {
2115 /* Otherwise, fallback to contacting the
2117 set_dc_type_and_flags_connect( domain );
2125 /**********************************************************************
2126 ***********************************************************************/
2128 static NTSTATUS cm_get_schannel_creds(struct winbindd_domain *domain,
2129 struct netlogon_creds_CredentialState **ppdc)
2131 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2132 struct rpc_pipe_client *netlogon_pipe;
2134 if (lp_client_schannel() == False) {
2135 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2138 result = cm_connect_netlogon(domain, &netlogon_pipe);
2139 if (!NT_STATUS_IS_OK(result)) {
2143 /* Return a pointer to the struct netlogon_creds_CredentialState from the
2146 if (!domain->conn.netlogon_pipe->dc) {
2147 return NT_STATUS_INTERNAL_ERROR; /* This shouldn't happen. */
2150 *ppdc = domain->conn.netlogon_pipe->dc;
2151 return NT_STATUS_OK;
2154 NTSTATUS cm_connect_sam(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2155 struct rpc_pipe_client **cli, struct policy_handle *sam_handle)
2157 struct winbindd_cm_conn *conn;
2158 NTSTATUS status, result;
2159 struct netlogon_creds_CredentialState *p_creds;
2160 char *machine_password = NULL;
2161 char *machine_account = NULL;
2162 char *domain_name = NULL;
2164 if (sid_check_is_domain(&domain->sid)) {
2165 return open_internal_samr_conn(mem_ctx, domain, cli, sam_handle);
2168 status = init_dc_connection_rpc(domain);
2169 if (!NT_STATUS_IS_OK(status)) {
2173 conn = &domain->conn;
2175 if (rpccli_is_connected(conn->samr_pipe)) {
2179 TALLOC_FREE(conn->samr_pipe);
2182 * No SAMR pipe yet. Attempt to get an NTLMSSP SPNEGO authenticated
2183 * sign and sealed pipe using the machine account password by
2184 * preference. If we can't - try schannel, if that fails, try
2188 if ((conn->cli->user_name[0] == '\0') ||
2189 (conn->cli->domain[0] == '\0') ||
2190 (conn->cli->password == NULL || conn->cli->password[0] == '\0'))
2192 status = get_trust_creds(domain, &machine_password,
2193 &machine_account, NULL);
2194 if (!NT_STATUS_IS_OK(status)) {
2195 DEBUG(10, ("cm_connect_sam: No no user available for "
2196 "domain %s, trying schannel\n", conn->cli->domain));
2199 domain_name = domain->name;
2201 machine_password = SMB_STRDUP(conn->cli->password);
2202 machine_account = SMB_STRDUP(conn->cli->user_name);
2203 domain_name = conn->cli->domain;
2206 if (!machine_password || !machine_account) {
2207 status = NT_STATUS_NO_MEMORY;
2211 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2212 authenticated SAMR pipe with sign & seal. */
2213 status = cli_rpc_pipe_open_spnego_ntlmssp(conn->cli,
2214 &ndr_table_samr.syntax_id,
2216 DCERPC_AUTH_LEVEL_PRIVACY,
2222 if (!NT_STATUS_IS_OK(status)) {
2223 DEBUG(10,("cm_connect_sam: failed to connect to SAMR "
2224 "pipe for domain %s using NTLMSSP "
2225 "authenticated pipe: user %s\\%s. Error was "
2226 "%s\n", domain->name, domain_name,
2227 machine_account, nt_errstr(status)));
2231 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for "
2232 "domain %s using NTLMSSP authenticated "
2233 "pipe: user %s\\%s\n", domain->name,
2234 domain_name, machine_account));
2236 status = dcerpc_samr_Connect2(conn->samr_pipe->binding_handle, mem_ctx,
2237 conn->samr_pipe->desthost,
2238 SEC_FLAG_MAXIMUM_ALLOWED,
2239 &conn->sam_connect_handle,
2241 if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
2244 if (NT_STATUS_IS_OK(status)) {
2248 DEBUG(10,("cm_connect_sam: ntlmssp-sealed dcerpc_samr_Connect2 "
2249 "failed for domain %s, error was %s. Trying schannel\n",
2250 domain->name, nt_errstr(status) ));
2251 TALLOC_FREE(conn->samr_pipe);
2255 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2257 status = cm_get_schannel_creds(domain, &p_creds);
2258 if (!NT_STATUS_IS_OK(status)) {
2259 /* If this call fails - conn->cli can now be NULL ! */
2260 DEBUG(10, ("cm_connect_sam: Could not get schannel auth info "
2261 "for domain %s (error %s), trying anon\n",
2263 nt_errstr(status) ));
2266 status = cli_rpc_pipe_open_schannel_with_key
2267 (conn->cli, &ndr_table_samr.syntax_id, NCACN_NP,
2268 DCERPC_AUTH_LEVEL_PRIVACY,
2269 domain->name, &p_creds, &conn->samr_pipe);
2271 if (!NT_STATUS_IS_OK(status)) {
2272 DEBUG(10,("cm_connect_sam: failed to connect to SAMR pipe for "
2273 "domain %s using schannel. Error was %s\n",
2274 domain->name, nt_errstr(status) ));
2277 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for domain %s using "
2278 "schannel.\n", domain->name ));
2280 status = dcerpc_samr_Connect2(conn->samr_pipe->binding_handle, mem_ctx,
2281 conn->samr_pipe->desthost,
2282 SEC_FLAG_MAXIMUM_ALLOWED,
2283 &conn->sam_connect_handle,
2285 if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
2288 if (NT_STATUS_IS_OK(status)) {
2291 DEBUG(10,("cm_connect_sam: schannel-sealed dcerpc_samr_Connect2 failed "
2292 "for domain %s, error was %s. Trying anonymous\n",
2293 domain->name, nt_errstr(status) ));
2294 TALLOC_FREE(conn->samr_pipe);
2298 /* Finally fall back to anonymous. */
2299 status = cli_rpc_pipe_open_noauth(conn->cli, &ndr_table_samr.syntax_id,
2302 if (!NT_STATUS_IS_OK(status)) {
2306 status = dcerpc_samr_Connect2(conn->samr_pipe->binding_handle, mem_ctx,
2307 conn->samr_pipe->desthost,
2308 SEC_FLAG_MAXIMUM_ALLOWED,
2309 &conn->sam_connect_handle,
2311 if (!NT_STATUS_IS_OK(status)) {
2312 DEBUG(10,("cm_connect_sam: rpccli_samr_Connect2 failed "
2313 "for domain %s Error was %s\n",
2314 domain->name, nt_errstr(status) ));
2317 if (!NT_STATUS_IS_OK(result)) {
2319 DEBUG(10,("cm_connect_sam: dcerpc_samr_Connect2 failed "
2320 "for domain %s Error was %s\n",
2321 domain->name, nt_errstr(result)));
2326 status = dcerpc_samr_OpenDomain(conn->samr_pipe->binding_handle,
2328 &conn->sam_connect_handle,
2329 SEC_FLAG_MAXIMUM_ALLOWED,
2331 &conn->sam_domain_handle,
2333 if (!NT_STATUS_IS_OK(status)) {
2340 if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
2342 * if we got access denied, we might just have no access rights
2343 * to talk to the remote samr server server (e.g. when we are a
2344 * PDC and we are connecting a w2k8 pdc via an interdomain
2345 * trust). In that case do not invalidate the whole connection
2348 TALLOC_FREE(conn->samr_pipe);
2349 ZERO_STRUCT(conn->sam_domain_handle);
2351 } else if (!NT_STATUS_IS_OK(status)) {
2352 invalidate_cm_connection(conn);
2356 *cli = conn->samr_pipe;
2357 *sam_handle = conn->sam_domain_handle;
2358 SAFE_FREE(machine_password);
2359 SAFE_FREE(machine_account);
2363 /**********************************************************************
2364 open an schanneld ncacn_ip_tcp connection to LSA
2365 ***********************************************************************/
2367 NTSTATUS cm_connect_lsa_tcp(struct winbindd_domain *domain,
2368 TALLOC_CTX *mem_ctx,
2369 struct rpc_pipe_client **cli)
2371 struct winbindd_cm_conn *conn;
2372 struct netlogon_creds_CredentialState *creds;
2375 DEBUG(10,("cm_connect_lsa_tcp\n"));
2377 status = init_dc_connection_rpc(domain);
2378 if (!NT_STATUS_IS_OK(status)) {
2382 conn = &domain->conn;
2384 if (conn->lsa_pipe_tcp &&
2385 conn->lsa_pipe_tcp->transport->transport == NCACN_IP_TCP &&
2386 conn->lsa_pipe_tcp->auth->auth_level == DCERPC_AUTH_LEVEL_PRIVACY &&
2387 rpccli_is_connected(conn->lsa_pipe_tcp)) {
2391 TALLOC_FREE(conn->lsa_pipe_tcp);
2393 status = cm_get_schannel_creds(domain, &creds);
2394 if (!NT_STATUS_IS_OK(status)) {
2398 status = cli_rpc_pipe_open_schannel_with_key(conn->cli,
2399 &ndr_table_lsarpc.syntax_id,
2401 DCERPC_AUTH_LEVEL_PRIVACY,
2404 &conn->lsa_pipe_tcp);
2405 if (!NT_STATUS_IS_OK(status)) {
2406 DEBUG(10,("cli_rpc_pipe_open_schannel_with_key failed: %s\n",
2407 nt_errstr(status)));
2412 if (!NT_STATUS_IS_OK(status)) {
2413 TALLOC_FREE(conn->lsa_pipe_tcp);
2417 *cli = conn->lsa_pipe_tcp;
2422 NTSTATUS cm_connect_lsa(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2423 struct rpc_pipe_client **cli, struct policy_handle *lsa_policy)
2425 struct winbindd_cm_conn *conn;
2426 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2427 struct netlogon_creds_CredentialState *p_creds;
2429 result = init_dc_connection_rpc(domain);
2430 if (!NT_STATUS_IS_OK(result))
2433 conn = &domain->conn;
2435 if (rpccli_is_connected(conn->lsa_pipe)) {
2439 TALLOC_FREE(conn->lsa_pipe);
2441 if ((conn->cli->user_name[0] == '\0') ||
2442 (conn->cli->domain[0] == '\0') ||
2443 (conn->cli->password == NULL || conn->cli->password[0] == '\0')) {
2444 DEBUG(10, ("cm_connect_lsa: No no user available for "
2445 "domain %s, trying schannel\n", conn->cli->domain));
2449 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2450 * authenticated LSA pipe with sign & seal. */
2451 result = cli_rpc_pipe_open_spnego_ntlmssp
2452 (conn->cli, &ndr_table_lsarpc.syntax_id, NCACN_NP,
2453 DCERPC_AUTH_LEVEL_PRIVACY,
2454 conn->cli->domain, conn->cli->user_name, conn->cli->password,
2457 if (!NT_STATUS_IS_OK(result)) {
2458 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2459 "domain %s using NTLMSSP authenticated pipe: user "
2460 "%s\\%s. Error was %s. Trying schannel.\n",
2461 domain->name, conn->cli->domain,
2462 conn->cli->user_name, nt_errstr(result)));
2466 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2467 "NTLMSSP authenticated pipe: user %s\\%s\n",
2468 domain->name, conn->cli->domain, conn->cli->user_name ));
2470 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2471 SEC_FLAG_MAXIMUM_ALLOWED,
2473 if (NT_STATUS_IS_OK(result)) {
2477 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2480 TALLOC_FREE(conn->lsa_pipe);
2484 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2486 result = cm_get_schannel_creds(domain, &p_creds);
2487 if (!NT_STATUS_IS_OK(result)) {
2488 /* If this call fails - conn->cli can now be NULL ! */
2489 DEBUG(10, ("cm_connect_lsa: Could not get schannel auth info "
2490 "for domain %s (error %s), trying anon\n",
2492 nt_errstr(result) ));
2495 result = cli_rpc_pipe_open_schannel_with_key
2496 (conn->cli, &ndr_table_lsarpc.syntax_id, NCACN_NP,
2497 DCERPC_AUTH_LEVEL_PRIVACY,
2498 domain->name, &p_creds, &conn->lsa_pipe);
2500 if (!NT_STATUS_IS_OK(result)) {
2501 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2502 "domain %s using schannel. Error was %s\n",
2503 domain->name, nt_errstr(result) ));
2506 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2507 "schannel.\n", domain->name ));
2509 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2510 SEC_FLAG_MAXIMUM_ALLOWED,
2512 if (NT_STATUS_IS_OK(result)) {
2516 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2519 TALLOC_FREE(conn->lsa_pipe);
2523 result = cli_rpc_pipe_open_noauth(conn->cli,
2524 &ndr_table_lsarpc.syntax_id,
2526 if (!NT_STATUS_IS_OK(result)) {
2527 result = NT_STATUS_PIPE_NOT_AVAILABLE;
2531 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2532 SEC_FLAG_MAXIMUM_ALLOWED,
2535 if (!NT_STATUS_IS_OK(result)) {
2536 invalidate_cm_connection(conn);
2540 *cli = conn->lsa_pipe;
2541 *lsa_policy = conn->lsa_policy;
2545 /****************************************************************************
2546 Open the netlogon pipe to this DC. Use schannel if specified in client conf.
2547 session key stored in conn->netlogon_pipe->dc->sess_key.
2548 ****************************************************************************/
2550 NTSTATUS cm_connect_netlogon(struct winbindd_domain *domain,
2551 struct rpc_pipe_client **cli)
2553 struct winbindd_cm_conn *conn;
2556 uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
2558 enum netr_SchannelType sec_chan_type;
2559 const char *account_name;
2560 struct rpc_pipe_client *netlogon_pipe = NULL;
2564 result = init_dc_connection_rpc(domain);
2565 if (!NT_STATUS_IS_OK(result)) {
2569 conn = &domain->conn;
2571 if (rpccli_is_connected(conn->netlogon_pipe)) {
2572 *cli = conn->netlogon_pipe;
2573 return NT_STATUS_OK;
2576 TALLOC_FREE(conn->netlogon_pipe);
2578 result = cli_rpc_pipe_open_noauth(conn->cli,
2579 &ndr_table_netlogon.syntax_id,
2581 if (!NT_STATUS_IS_OK(result)) {
2585 if ((!IS_DC) && (!domain->primary)) {
2586 /* Clear the schannel request bit and drop down */
2587 neg_flags &= ~NETLOGON_NEG_SCHANNEL;
2591 if (lp_client_schannel() != False) {
2592 neg_flags |= NETLOGON_NEG_SCHANNEL;
2595 if (!get_trust_pw_hash(domain->name, mach_pwd, &account_name,
2598 TALLOC_FREE(netlogon_pipe);
2599 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2602 result = rpccli_netlogon_setup_creds(
2604 domain->dcname, /* server name. */
2605 domain->name, /* domain name */
2606 global_myname(), /* client name */
2607 account_name, /* machine account */
2608 mach_pwd, /* machine password */
2609 sec_chan_type, /* from get_trust_pw */
2612 if (!NT_STATUS_IS_OK(result)) {
2613 TALLOC_FREE(netlogon_pipe);
2617 if ((lp_client_schannel() == True) &&
2618 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2619 DEBUG(3, ("Server did not offer schannel\n"));
2620 TALLOC_FREE(netlogon_pipe);
2621 return NT_STATUS_ACCESS_DENIED;
2625 if ((lp_client_schannel() == False) ||
2626 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2628 * NetSamLogonEx only works for schannel
2630 domain->can_do_samlogon_ex = False;
2632 /* We're done - just keep the existing connection to NETLOGON
2634 conn->netlogon_pipe = netlogon_pipe;
2635 *cli = conn->netlogon_pipe;
2636 return NT_STATUS_OK;
2639 /* Using the credentials from the first pipe, open a signed and sealed
2640 second netlogon pipe. The session key is stored in the schannel
2641 part of the new pipe auth struct.
2644 result = cli_rpc_pipe_open_schannel_with_key(
2645 conn->cli, &ndr_table_netlogon.syntax_id, NCACN_NP,
2646 DCERPC_AUTH_LEVEL_PRIVACY, domain->name, &netlogon_pipe->dc,
2647 &conn->netlogon_pipe);
2649 /* We can now close the initial netlogon pipe. */
2650 TALLOC_FREE(netlogon_pipe);
2652 if (!NT_STATUS_IS_OK(result)) {
2653 DEBUG(3, ("Could not open schannel'ed NETLOGON pipe. Error "
2654 "was %s\n", nt_errstr(result)));
2656 invalidate_cm_connection(conn);
2661 * Always try netr_LogonSamLogonEx. We will fall back for NT4
2662 * which gives DCERPC_FAULT_OP_RNG_ERROR (function not
2663 * supported). We used to only try SamLogonEx for AD, but
2664 * Samba DCs can also do it. And because we don't distinguish
2665 * between Samba and NT4, always try it once.
2667 domain->can_do_samlogon_ex = true;
2669 *cli = conn->netlogon_pipe;
2670 return NT_STATUS_OK;
2673 void winbind_msg_ip_dropped(struct messaging_context *msg_ctx,
2676 struct server_id server_id,
2679 struct winbindd_domain *domain;
2682 || (data->data == NULL)
2683 || (data->length == 0)
2684 || (data->data[data->length-1] != '\0')
2685 || !is_ipaddress((char *)data->data)) {
2686 DEBUG(1, ("invalid msg_ip_dropped message\n"));
2689 for (domain = domain_list(); domain != NULL; domain = domain->next) {
2690 char sockaddr[INET6_ADDRSTRLEN];
2691 if (domain->conn.cli == NULL) {
2694 if (domain->conn.cli->fd == -1) {
2697 client_socket_addr(domain->conn.cli->fd, sockaddr,
2699 if (strequal(sockaddr, (char *)data->data)) {
2700 close(domain->conn.cli->fd);
2701 domain->conn.cli->fd = -1;