2 Unix SMB/CIFS implementation.
4 Winbind daemon connection manager
6 Copyright (C) Tim Potter 2001
7 Copyright (C) Andrew Bartlett 2002
8 Copyright (C) Gerald (Jerry) Carter 2003-2005.
9 Copyright (C) Volker Lendecke 2004-2005
10 Copyright (C) Jeremy Allison 2006
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 3 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 We need to manage connections to domain controllers without having to
28 mess up the main winbindd code with other issues. The aim of the
29 connection manager is to:
31 - make connections to domain controllers and cache them
32 - re-establish connections when networks or servers go down
33 - centralise the policy on connection timeouts, domain controller
35 - manage re-entrancy for when winbindd becomes able to handle
36 multiple outstanding rpc requests
38 Why not have connection management as part of the rpc layer like tng?
39 Good question. This code may morph into libsmb/rpc_cache.c or something
40 like that but at the moment it's simply staying as part of winbind. I
41 think the TNG architecture of forcing every user of the rpc layer to use
42 the connection caching system is a bad idea. It should be an optional
43 method of using the routines.
45 The TNG design is quite good but I disagree with some aspects of the
53 - I'm pretty annoyed by all the make_nmb_name() stuff. It should be
54 moved down into another function.
56 - Take care when destroying cli_structs as they can be shared between
65 #define DBGC_CLASS DBGC_WINBIND
69 struct sockaddr_storage ss;
72 extern struct winbindd_methods reconnect_methods;
73 extern bool override_logfile;
75 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain);
76 static void set_dc_type_and_flags( struct winbindd_domain *domain );
77 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
78 struct dc_name_ip **dcs, int *num_dcs);
80 /****************************************************************
81 Child failed to find DC's. Reschedule check.
82 ****************************************************************/
84 static void msg_failed_to_go_online(struct messaging_context *msg,
87 struct server_id server_id,
90 struct winbindd_domain *domain;
91 const char *domainname = (const char *)data->data;
93 if (data->data == NULL || data->length == 0) {
97 DEBUG(5,("msg_fail_to_go_online: received for domain %s.\n", domainname));
99 for (domain = domain_list(); domain; domain = domain->next) {
100 if (domain->internal) {
104 if (strequal(domain->name, domainname)) {
105 if (domain->online) {
106 /* We're already online, ignore. */
107 DEBUG(5,("msg_fail_to_go_online: domain %s "
108 "already online.\n", domainname));
112 /* Reschedule the online check. */
113 set_domain_offline(domain);
119 /****************************************************************
120 Actually cause a reconnect from a message.
121 ****************************************************************/
123 static void msg_try_to_go_online(struct messaging_context *msg,
126 struct server_id server_id,
129 struct winbindd_domain *domain;
130 const char *domainname = (const char *)data->data;
132 if (data->data == NULL || data->length == 0) {
136 DEBUG(5,("msg_try_to_go_online: received for domain %s.\n", domainname));
138 for (domain = domain_list(); domain; domain = domain->next) {
139 if (domain->internal) {
143 if (strequal(domain->name, domainname)) {
145 if (domain->online) {
146 /* We're already online, ignore. */
147 DEBUG(5,("msg_try_to_go_online: domain %s "
148 "already online.\n", domainname));
152 /* This call takes care of setting the online
153 flag to true if we connected, or re-adding
154 the offline handler if false. Bypasses online
155 check so always does network calls. */
157 init_dc_connection_network(domain);
163 /****************************************************************
164 Fork a child to try and contact a DC. Do this as contacting a
165 DC requires blocking lookups and we don't want to block our
167 ****************************************************************/
169 static bool fork_child_dc_connect(struct winbindd_domain *domain)
171 struct dc_name_ip *dcs = NULL;
173 TALLOC_CTX *mem_ctx = NULL;
175 pid_t parent_pid = sys_getpid();
180 child_pid = sys_fork();
182 if (child_pid == -1) {
183 DEBUG(0, ("fork_child_dc_connect: Could not fork: %s\n", strerror(errno)));
187 if (child_pid != 0) {
189 messaging_register(winbind_messaging_context(), NULL,
190 MSG_WINBIND_TRY_TO_GO_ONLINE,
191 msg_try_to_go_online);
192 messaging_register(winbind_messaging_context(), NULL,
193 MSG_WINBIND_FAILED_TO_GO_ONLINE,
194 msg_failed_to_go_online);
200 /* Leave messages blocked - we will never process one. */
202 if (!reinit_after_fork(winbind_messaging_context())) {
203 DEBUG(0,("reinit_after_fork() failed\n"));
207 close_conns_after_fork();
209 if (!override_logfile) {
211 if (asprintf(&logfile, "%s/log.winbindd-dc-connect", get_dyn_LOGFILEBASE()) > 0) {
212 lp_set_logfile(logfile);
218 mem_ctx = talloc_init("fork_child_dc_connect");
220 DEBUG(0,("talloc_init failed.\n"));
224 if ((!get_dcs(mem_ctx, domain, &dcs, &num_dcs)) || (num_dcs == 0)) {
225 /* Still offline ? Can't find DC's. */
226 messaging_send_buf(winbind_messaging_context(),
227 pid_to_procid(parent_pid),
228 MSG_WINBIND_FAILED_TO_GO_ONLINE,
229 (uint8 *)domain->name,
230 strlen(domain->name)+1);
234 /* We got a DC. Send a message to our parent to get it to
235 try and do the same. */
237 messaging_send_buf(winbind_messaging_context(),
238 pid_to_procid(parent_pid),
239 MSG_WINBIND_TRY_TO_GO_ONLINE,
240 (uint8 *)domain->name,
241 strlen(domain->name)+1);
245 /****************************************************************
246 Handler triggered if we're offline to try and detect a DC.
247 ****************************************************************/
249 static void check_domain_online_handler(struct event_context *ctx,
250 struct timed_event *te,
251 const struct timeval *now,
254 struct winbindd_domain *domain =
255 (struct winbindd_domain *)private_data;
257 DEBUG(10,("check_domain_online_handler: called for domain "
258 "%s (online = %s)\n", domain->name,
259 domain->online ? "True" : "False" ));
261 TALLOC_FREE(domain->check_online_event);
263 /* Are we still in "startup" mode ? */
265 if (domain->startup && (now->tv_sec > domain->startup_time + 30)) {
266 /* No longer in "startup" mode. */
267 DEBUG(10,("check_domain_online_handler: domain %s no longer in 'startup' mode.\n",
269 domain->startup = False;
272 /* We've been told to stay offline, so stay
275 if (get_global_winbindd_state_offline()) {
276 DEBUG(10,("check_domain_online_handler: domain %s remaining globally offline\n",
281 /* Fork a child to test if it can contact a DC.
282 If it can then send ourselves a message to
283 cause a reconnect. */
285 fork_child_dc_connect(domain);
288 /****************************************************************
289 If we're still offline setup the timeout check.
290 ****************************************************************/
292 static void calc_new_online_timeout_check(struct winbindd_domain *domain)
294 int wbc = lp_winbind_cache_time();
296 if (domain->startup) {
297 domain->check_online_timeout = 10;
298 } else if (domain->check_online_timeout < wbc) {
299 domain->check_online_timeout = wbc;
303 /****************************************************************
304 Set domain offline and also add handler to put us back online
306 ****************************************************************/
308 void set_domain_offline(struct winbindd_domain *domain)
310 DEBUG(10,("set_domain_offline: called for domain %s\n",
313 TALLOC_FREE(domain->check_online_event);
315 if (domain->internal) {
316 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
321 domain->online = False;
323 /* Offline domains are always initialized. They're
324 re-initialized when they go back online. */
326 domain->initialized = True;
328 /* We only add the timeout handler that checks and
329 allows us to go back online when we've not
330 been told to remain offline. */
332 if (get_global_winbindd_state_offline()) {
333 DEBUG(10,("set_domain_offline: domain %s remaining globally offline\n",
338 /* If we're in statup mode, check again in 10 seconds, not in
339 lp_winbind_cache_time() seconds (which is 5 mins by default). */
341 calc_new_online_timeout_check(domain);
343 domain->check_online_event = event_add_timed(winbind_event_context(),
345 timeval_current_ofs(domain->check_online_timeout,0),
346 "check_domain_online_handler",
347 check_domain_online_handler,
350 /* The above *has* to succeed for winbindd to work. */
351 if (!domain->check_online_event) {
352 smb_panic("set_domain_offline: failed to add online handler");
355 DEBUG(10,("set_domain_offline: added event handler for domain %s\n",
358 /* Send an offline message to the idmap child when our
359 primary domain goes offline */
361 if ( domain->primary ) {
362 struct winbindd_child *idmap = idmap_child();
364 if ( idmap->pid != 0 ) {
365 messaging_send_buf(winbind_messaging_context(),
366 pid_to_procid(idmap->pid),
368 (uint8 *)domain->name,
369 strlen(domain->name)+1);
376 /****************************************************************
377 Set domain online - if allowed.
378 ****************************************************************/
380 static void set_domain_online(struct winbindd_domain *domain)
384 DEBUG(10,("set_domain_online: called for domain %s\n",
387 if (domain->internal) {
388 DEBUG(3,("set_domain_online: domain %s is internal - logic error.\n",
393 if (get_global_winbindd_state_offline()) {
394 DEBUG(10,("set_domain_online: domain %s remaining globally offline\n",
399 winbindd_set_locator_kdc_envs(domain);
401 /* If we are waiting to get a krb5 ticket, trigger immediately. */
403 set_event_dispatch_time(winbind_event_context(),
404 "krb5_ticket_gain_handler", now);
406 /* Ok, we're out of any startup mode now... */
407 domain->startup = False;
409 if (domain->online == False) {
410 /* We were offline - now we're online. We default to
411 using the MS-RPC backend if we started offline,
412 and if we're going online for the first time we
413 should really re-initialize the backends and the
414 checks to see if we're talking to an AD or NT domain.
417 domain->initialized = False;
419 /* 'reconnect_methods' is the MS-RPC backend. */
420 if (domain->backend == &reconnect_methods) {
421 domain->backend = NULL;
425 /* Ensure we have no online timeout checks. */
426 domain->check_online_timeout = 0;
427 TALLOC_FREE(domain->check_online_event);
429 /* Ensure we ignore any pending child messages. */
430 messaging_deregister(winbind_messaging_context(),
431 MSG_WINBIND_TRY_TO_GO_ONLINE, NULL);
432 messaging_deregister(winbind_messaging_context(),
433 MSG_WINBIND_FAILED_TO_GO_ONLINE, NULL);
435 domain->online = True;
437 /* Send an online message to the idmap child when our
438 primary domain comes online */
440 if ( domain->primary ) {
441 struct winbindd_child *idmap = idmap_child();
443 if ( idmap->pid != 0 ) {
444 messaging_send_buf(winbind_messaging_context(),
445 pid_to_procid(idmap->pid),
447 (uint8 *)domain->name,
448 strlen(domain->name)+1);
455 /****************************************************************
456 Requested to set a domain online.
457 ****************************************************************/
459 void set_domain_online_request(struct winbindd_domain *domain)
463 DEBUG(10,("set_domain_online_request: called for domain %s\n",
466 if (get_global_winbindd_state_offline()) {
467 DEBUG(10,("set_domain_online_request: domain %s remaining globally offline\n",
472 /* We've been told it's safe to go online and
473 try and connect to a DC. But I don't believe it
474 because network manager seems to lie.
475 Wait at least 5 seconds. Heuristics suck... */
477 if (!domain->check_online_event) {
478 /* If we've come from being globally offline we
479 don't have a check online event handler set.
480 We need to add one now we're trying to go
483 DEBUG(10,("set_domain_online_request: domain %s was globally offline.\n",
486 domain->check_online_event = event_add_timed(winbind_event_context(),
488 timeval_current_ofs(5, 0),
489 "check_domain_online_handler",
490 check_domain_online_handler,
493 /* The above *has* to succeed for winbindd to work. */
494 if (!domain->check_online_event) {
495 smb_panic("set_domain_online_request: failed to add online handler");
501 /* Go into "startup" mode again. */
502 domain->startup_time = tev.tv_sec;
503 domain->startup = True;
507 set_event_dispatch_time(winbind_event_context(), "check_domain_online_handler", tev);
510 /****************************************************************
511 Add -ve connection cache entries for domain and realm.
512 ****************************************************************/
514 void winbind_add_failed_connection_entry(const struct winbindd_domain *domain,
518 add_failed_connection_entry(domain->name, server, result);
519 /* If this was the saf name for the last thing we talked to,
521 saf_delete(domain->name);
522 if (*domain->alt_name) {
523 add_failed_connection_entry(domain->alt_name, server, result);
524 saf_delete(domain->alt_name);
526 winbindd_unset_locator_kdc_env(domain);
529 /* Choose between anonymous or authenticated connections. We need to use
530 an authenticated connection if DCs have the RestrictAnonymous registry
531 entry set > 0, or the "Additional restrictions for anonymous
532 connections" set in the win2k Local Security Policy.
534 Caller to free() result in domain, username, password
537 static void cm_get_ipc_userpass(char **username, char **domain, char **password)
539 *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
540 *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
541 *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
543 if (*username && **username) {
545 if (!*domain || !**domain)
546 *domain = smb_xstrdup(lp_workgroup());
548 if (!*password || !**password)
549 *password = smb_xstrdup("");
551 DEBUG(3, ("cm_get_ipc_userpass: Retrieved auth-user from secrets.tdb [%s\\%s]\n",
552 *domain, *username));
555 DEBUG(3, ("cm_get_ipc_userpass: No auth-user defined\n"));
556 *username = smb_xstrdup("");
557 *domain = smb_xstrdup("");
558 *password = smb_xstrdup("");
562 static bool get_dc_name_via_netlogon(struct winbindd_domain *domain,
564 struct sockaddr_storage *dc_ss)
566 struct winbindd_domain *our_domain = NULL;
567 struct rpc_pipe_client *netlogon_pipe = NULL;
571 unsigned int orig_timeout;
572 const char *tmp = NULL;
575 /* Hmmmm. We can only open one connection to the NETLOGON pipe at the
582 if (domain->primary) {
586 our_domain = find_our_domain();
588 if ((mem_ctx = talloc_init("get_dc_name_via_netlogon")) == NULL) {
592 result = cm_connect_netlogon(our_domain, &netlogon_pipe);
593 if (!NT_STATUS_IS_OK(result)) {
594 talloc_destroy(mem_ctx);
598 /* This call can take a long time - allow the server to time out.
599 35 seconds should do it. */
601 orig_timeout = rpccli_set_timeout(netlogon_pipe, 35000);
603 if (our_domain->active_directory) {
604 struct netr_DsRGetDCNameInfo *domain_info = NULL;
606 result = rpccli_netr_DsRGetDCName(netlogon_pipe,
615 if (W_ERROR_IS_OK(werr)) {
617 mem_ctx, domain_info->dc_unc);
619 DEBUG(0, ("talloc_strdup failed\n"));
620 talloc_destroy(mem_ctx);
623 if (strlen(domain->alt_name) == 0) {
624 fstrcpy(domain->alt_name,
625 domain_info->domain_name);
627 if (strlen(domain->forest_name) == 0) {
628 fstrcpy(domain->forest_name,
629 domain_info->forest_name);
633 result = rpccli_netr_GetAnyDCName(netlogon_pipe, mem_ctx,
640 /* And restore our original timeout. */
641 rpccli_set_timeout(netlogon_pipe, orig_timeout);
643 if (!NT_STATUS_IS_OK(result)) {
644 DEBUG(10,("rpccli_netr_GetAnyDCName failed: %s\n",
646 talloc_destroy(mem_ctx);
650 if (!W_ERROR_IS_OK(werr)) {
651 DEBUG(10,("rpccli_netr_GetAnyDCName failed: %s\n",
653 talloc_destroy(mem_ctx);
657 /* rpccli_netr_GetAnyDCName gives us a name with \\ */
668 talloc_destroy(mem_ctx);
670 DEBUG(10,("rpccli_netr_GetAnyDCName returned %s\n", dcname));
672 if (!resolve_name(dcname, dc_ss, 0x20)) {
680 * Helper function to assemble trust password and account name
682 static NTSTATUS get_trust_creds(const struct winbindd_domain *domain,
683 char **machine_password,
684 char **machine_account,
685 char **machine_krb5_principal)
687 const char *account_name;
688 const char *name = NULL;
690 /* If we are a DC and this is not our own domain */
695 struct winbindd_domain *our_domain = find_our_domain();
698 return NT_STATUS_INVALID_SERVER_STATE;
700 name = our_domain->name;
703 if (!get_trust_pw_clear(name, machine_password,
704 &account_name, NULL))
706 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
709 if ((machine_account != NULL) &&
710 (asprintf(machine_account, "%s$", account_name) == -1))
712 return NT_STATUS_NO_MEMORY;
715 /* this is at least correct when domain is our domain,
716 * which is the only case, when this is currently used: */
717 if (machine_krb5_principal != NULL)
719 if (asprintf(machine_krb5_principal, "%s$@%s",
720 account_name, domain->alt_name) == -1)
722 return NT_STATUS_NO_MEMORY;
725 strupper_m(*machine_krb5_principal);
731 /************************************************************************
732 Given a fd with a just-connected TCP connection to a DC, open a connection
734 ************************************************************************/
736 static NTSTATUS cm_prepare_connection(const struct winbindd_domain *domain,
738 const char *controller,
739 struct cli_state **cli,
742 char *machine_password = NULL;
743 char *machine_krb5_principal = NULL;
744 char *machine_account = NULL;
745 char *ipc_username = NULL;
746 char *ipc_domain = NULL;
747 char *ipc_password = NULL;
749 struct named_mutex *mutex;
751 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
753 struct sockaddr peeraddr;
754 socklen_t peeraddr_len;
756 struct sockaddr_in *peeraddr_in = (struct sockaddr_in *)&peeraddr;
758 DEBUG(10,("cm_prepare_connection: connecting to DC %s for domain %s\n",
759 controller, domain->name ));
763 mutex = grab_named_mutex(talloc_tos(), controller,
764 WINBIND_SERVER_MUTEX_WAIT_TIME);
766 DEBUG(0,("cm_prepare_connection: mutex grab failed for %s\n",
768 result = NT_STATUS_POSSIBLE_DEADLOCK;
772 if ((*cli = cli_initialise()) == NULL) {
773 DEBUG(1, ("Could not cli_initialize\n"));
774 result = NT_STATUS_NO_MEMORY;
778 (*cli)->timeout = 10000; /* 10 seconds */
780 fstrcpy((*cli)->desthost, controller);
781 (*cli)->use_kerberos = True;
783 peeraddr_len = sizeof(peeraddr);
785 if ((getpeername((*cli)->fd, &peeraddr, &peeraddr_len) != 0) ||
786 (peeraddr_len != sizeof(struct sockaddr_in)) ||
787 (peeraddr_in->sin_family != PF_INET))
789 DEBUG(0,("cm_prepare_connection: %s\n", strerror(errno)));
790 result = NT_STATUS_UNSUCCESSFUL;
794 if (ntohs(peeraddr_in->sin_port) == 139) {
795 struct nmb_name calling;
796 struct nmb_name called;
798 make_nmb_name(&calling, global_myname(), 0x0);
799 make_nmb_name(&called, "*SMBSERVER", 0x20);
801 if (!cli_session_request(*cli, &calling, &called)) {
802 DEBUG(8, ("cli_session_request failed for %s\n",
804 result = NT_STATUS_UNSUCCESSFUL;
809 cli_setup_signing_state(*cli, Undefined);
811 if (!cli_negprot(*cli)) {
812 DEBUG(1, ("cli_negprot failed\n"));
813 result = NT_STATUS_UNSUCCESSFUL;
817 if (!is_trusted_domain_situation(domain->name) &&
818 (*cli)->protocol >= PROTOCOL_NT1 &&
819 (*cli)->capabilities & CAP_EXTENDED_SECURITY)
821 ADS_STATUS ads_status;
823 result = get_trust_creds(domain, &machine_password,
825 &machine_krb5_principal);
826 if (!NT_STATUS_IS_OK(result)) {
830 if (lp_security() == SEC_ADS) {
832 /* Try a krb5 session */
834 (*cli)->use_kerberos = True;
835 DEBUG(5, ("connecting to %s from %s with kerberos principal "
836 "[%s]\n", controller, global_myname(),
837 machine_krb5_principal));
839 winbindd_set_locator_kdc_envs(domain);
841 ads_status = cli_session_setup_spnego(*cli,
842 machine_krb5_principal,
846 if (!ADS_ERR_OK(ads_status)) {
847 DEBUG(4,("failed kerberos session setup with %s\n",
848 ads_errstr(ads_status)));
851 result = ads_ntstatus(ads_status);
852 if (NT_STATUS_IS_OK(result)) {
853 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
854 cli_init_creds(*cli, machine_account, domain->name, machine_password);
855 goto session_setup_done;
859 /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the machine account. */
860 (*cli)->use_kerberos = False;
862 DEBUG(5, ("connecting to %s from %s with username "
863 "[%s]\\[%s]\n", controller, global_myname(),
864 domain->name, machine_account));
866 ads_status = cli_session_setup_spnego(*cli,
870 if (!ADS_ERR_OK(ads_status)) {
871 DEBUG(4, ("authenticated session setup failed with %s\n",
872 ads_errstr(ads_status)));
875 result = ads_ntstatus(ads_status);
876 if (NT_STATUS_IS_OK(result)) {
877 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
878 cli_init_creds(*cli, machine_account, domain->name, machine_password);
879 goto session_setup_done;
883 /* Fall back to non-kerberos session setup with auth_user */
885 (*cli)->use_kerberos = False;
887 cm_get_ipc_userpass(&ipc_username, &ipc_domain, &ipc_password);
889 if ((((*cli)->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) != 0) &&
890 (strlen(ipc_username) > 0)) {
892 /* Only try authenticated if we have a username */
894 DEBUG(5, ("connecting to %s from %s with username "
895 "[%s]\\[%s]\n", controller, global_myname(),
896 ipc_domain, ipc_username));
898 if (NT_STATUS_IS_OK(cli_session_setup(
900 ipc_password, strlen(ipc_password)+1,
901 ipc_password, strlen(ipc_password)+1,
903 /* Successful logon with given username. */
904 cli_init_creds(*cli, ipc_username, ipc_domain, ipc_password);
905 goto session_setup_done;
907 DEBUG(4, ("authenticated session setup with user %s\\%s failed.\n",
908 ipc_domain, ipc_username ));
914 /* Fall back to anonymous connection, this might fail later */
916 if (NT_STATUS_IS_OK(cli_session_setup(*cli, "", NULL, 0,
918 DEBUG(5, ("Connected anonymously\n"));
919 cli_init_creds(*cli, "", "", "");
920 goto session_setup_done;
923 result = cli_nt_error(*cli);
925 if (NT_STATUS_IS_OK(result))
926 result = NT_STATUS_UNSUCCESSFUL;
928 /* We can't session setup */
934 /* cache the server name for later connections */
936 saf_store( domain->name, (*cli)->desthost );
937 if (domain->alt_name && (*cli)->use_kerberos) {
938 saf_store( domain->alt_name, (*cli)->desthost );
941 winbindd_set_locator_kdc_envs(domain);
943 if (!cli_send_tconX(*cli, "IPC$", "IPC", "", 0)) {
945 result = cli_nt_error(*cli);
947 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(result)));
949 if (NT_STATUS_IS_OK(result))
950 result = NT_STATUS_UNSUCCESSFUL;
958 /* set the domain if empty; needed for schannel connections */
959 if ( !*(*cli)->domain ) {
960 fstrcpy( (*cli)->domain, domain->name );
963 result = NT_STATUS_OK;
967 SAFE_FREE(machine_account);
968 SAFE_FREE(machine_password);
969 SAFE_FREE(machine_krb5_principal);
970 SAFE_FREE(ipc_username);
971 SAFE_FREE(ipc_domain);
972 SAFE_FREE(ipc_password);
974 if (!NT_STATUS_IS_OK(result)) {
975 winbind_add_failed_connection_entry(domain, controller, result);
976 if ((*cli) != NULL) {
985 static bool add_one_dc_unique(TALLOC_CTX *mem_ctx, const char *domain_name,
986 const char *dcname, struct sockaddr_storage *pss,
987 struct dc_name_ip **dcs, int *num)
989 if (!NT_STATUS_IS_OK(check_negative_conn_cache(domain_name, dcname))) {
990 DEBUG(10, ("DC %s was in the negative conn cache\n", dcname));
994 *dcs = TALLOC_REALLOC_ARRAY(mem_ctx, *dcs, struct dc_name_ip, (*num)+1);
999 fstrcpy((*dcs)[*num].name, dcname);
1000 (*dcs)[*num].ss = *pss;
1005 static bool add_sockaddr_to_array(TALLOC_CTX *mem_ctx,
1006 struct sockaddr_storage *pss, uint16 port,
1007 struct sockaddr_storage **addrs, int *num)
1009 *addrs = TALLOC_REALLOC_ARRAY(mem_ctx, *addrs, struct sockaddr_storage, (*num)+1);
1011 if (*addrs == NULL) {
1016 (*addrs)[*num] = *pss;
1017 set_sockaddr_port(&(*addrs)[*num], port);
1023 /*******************************************************************
1024 convert an ip to a name
1025 *******************************************************************/
1027 static bool dcip_to_name(const struct winbindd_domain *domain,
1028 struct sockaddr_storage *pss,
1031 struct ip_service ip_list;
1037 /* For active directory servers, try to get the ldap server name.
1038 None of these failures should be considered critical for now */
1040 if (lp_security() == SEC_ADS) {
1042 char addr[INET6_ADDRSTRLEN];
1044 print_sockaddr(addr, sizeof(addr), pss);
1046 ads = ads_init(domain->alt_name, domain->name, NULL);
1047 ads->auth.flags |= ADS_AUTH_NO_BIND;
1049 if (ads_try_connect(ads, addr)) {
1050 /* We got a cldap packet. */
1051 fstrcpy(name, ads->config.ldap_server_name);
1052 namecache_store(name, 0x20, 1, &ip_list);
1054 DEBUG(10,("dcip_to_name: flags = 0x%x\n", (unsigned int)ads->config.flags));
1056 if (domain->primary && (ads->config.flags & ADS_KDC)) {
1057 if (ads_closest_dc(ads)) {
1058 char *sitename = sitename_fetch(ads->config.realm);
1060 /* We're going to use this KDC for this realm/domain.
1061 If we are using sites, then force the krb5 libs
1064 create_local_private_krb5_conf_for_domain(domain->alt_name,
1069 SAFE_FREE(sitename);
1071 /* use an off site KDC */
1072 create_local_private_krb5_conf_for_domain(domain->alt_name,
1077 winbindd_set_locator_kdc_envs(domain);
1079 /* Ensure we contact this DC also. */
1080 saf_store( domain->name, name);
1081 saf_store( domain->alt_name, name);
1084 ads_destroy( &ads );
1088 ads_destroy( &ads );
1092 /* try GETDC requests next */
1094 if (send_getdc_request(winbind_messaging_context(),
1095 pss, domain->name, &domain->sid)) {
1098 for (i=0; i<5; i++) {
1099 if (receive_getdc_response(pss, domain->name, name)) {
1100 namecache_store(name, 0x20, 1, &ip_list);
1107 /* try node status request */
1109 if ( name_status_find(domain->name, 0x1c, 0x20, pss, name) ) {
1110 namecache_store(name, 0x20, 1, &ip_list);
1116 /*******************************************************************
1117 Retreive a list of IP address for domain controllers. Fill in
1118 the dcs[] with results.
1119 *******************************************************************/
1121 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
1122 struct dc_name_ip **dcs, int *num_dcs)
1125 struct sockaddr_storage ss;
1126 struct ip_service *ip_list = NULL;
1127 int iplist_size = 0;
1130 enum security_types sec = (enum security_types)lp_security();
1132 is_our_domain = strequal(domain->name, lp_workgroup());
1135 && get_dc_name_via_netlogon(domain, dcname, &ss)
1136 && add_one_dc_unique(mem_ctx, domain->name, dcname, &ss, dcs, num_dcs) )
1138 char addr[INET6_ADDRSTRLEN];
1139 print_sockaddr(addr, sizeof(addr), &ss);
1140 DEBUG(10, ("Retrieved DC %s at %s via netlogon\n",
1145 if (sec == SEC_ADS) {
1146 char *sitename = NULL;
1148 /* We need to make sure we know the local site before
1149 doing any DNS queries, as this will restrict the
1150 get_sorted_dc_list() call below to only fetching
1151 DNS records for the correct site. */
1153 /* Find any DC to get the site record.
1154 We deliberately don't care about the
1157 get_dc_name(domain->name, domain->alt_name, dcname, &ss);
1159 sitename = sitename_fetch(domain->alt_name);
1162 /* Do the site-specific AD dns lookup first. */
1163 get_sorted_dc_list(domain->alt_name, sitename, &ip_list, &iplist_size, True);
1165 for ( i=0; i<iplist_size; i++ ) {
1166 char addr[INET6_ADDRSTRLEN];
1167 print_sockaddr(addr, sizeof(addr),
1169 add_one_dc_unique(mem_ctx,
1178 SAFE_FREE(sitename);
1182 /* Now we add DCs from the main AD dns lookup. */
1183 get_sorted_dc_list(domain->alt_name, NULL, &ip_list, &iplist_size, True);
1185 for ( i=0; i<iplist_size; i++ ) {
1186 char addr[INET6_ADDRSTRLEN];
1187 print_sockaddr(addr, sizeof(addr),
1189 add_one_dc_unique(mem_ctx,
1198 /* try standard netbios queries if no ADS */
1200 if (iplist_size==0) {
1201 get_sorted_dc_list(domain->name, NULL, &ip_list, &iplist_size, False);
1204 /* FIXME!! this is where we should re-insert the GETDC requests --jerry */
1206 /* now add to the dc array. We'll wait until the last minute
1207 to look up the name of the DC. But we fill in the char* for
1208 the ip now in to make the failed connection cache work */
1210 for ( i=0; i<iplist_size; i++ ) {
1211 char addr[INET6_ADDRSTRLEN];
1212 print_sockaddr(addr, sizeof(addr),
1214 add_one_dc_unique(mem_ctx, domain->name, addr,
1215 &ip_list[i].ss, dcs, num_dcs);
1218 SAFE_FREE( ip_list );
1223 static bool find_new_dc(TALLOC_CTX *mem_ctx,
1224 struct winbindd_domain *domain,
1225 fstring dcname, struct sockaddr_storage *pss, int *fd)
1227 struct dc_name_ip *dcs = NULL;
1230 const char **dcnames = NULL;
1231 int num_dcnames = 0;
1233 struct sockaddr_storage *addrs = NULL;
1239 if (!get_dcs(mem_ctx, domain, &dcs, &num_dcs) || (num_dcs == 0))
1242 for (i=0; i<num_dcs; i++) {
1244 if (!add_string_to_array(mem_ctx, dcs[i].name,
1245 &dcnames, &num_dcnames)) {
1248 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, 445,
1249 &addrs, &num_addrs)) {
1253 if (!add_string_to_array(mem_ctx, dcs[i].name,
1254 &dcnames, &num_dcnames)) {
1257 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, 139,
1258 &addrs, &num_addrs)) {
1263 if ((num_dcnames == 0) || (num_dcnames != num_addrs))
1266 if ((addrs == NULL) || (dcnames == NULL))
1269 /* 5 second timeout. */
1270 if (!open_any_socket_out(addrs, num_addrs, 5000, &fd_index, fd) ) {
1271 for (i=0; i<num_dcs; i++) {
1272 char ab[INET6_ADDRSTRLEN];
1273 print_sockaddr(ab, sizeof(ab), &dcs[i].ss);
1274 DEBUG(10, ("find_new_dc: open_any_socket_out failed for "
1275 "domain %s address %s. Error was %s\n",
1276 domain->name, ab, strerror(errno) ));
1277 winbind_add_failed_connection_entry(domain,
1278 dcs[i].name, NT_STATUS_UNSUCCESSFUL);
1283 *pss = addrs[fd_index];
1285 if (*dcnames[fd_index] != '\0' && !is_ipaddress(dcnames[fd_index])) {
1286 /* Ok, we've got a name for the DC */
1287 fstrcpy(dcname, dcnames[fd_index]);
1291 /* Try to figure out the name */
1292 if (dcip_to_name(domain, pss, dcname)) {
1296 /* We can not continue without the DC's name */
1297 winbind_add_failed_connection_entry(domain, dcs[fd_index].name,
1298 NT_STATUS_UNSUCCESSFUL);
1302 static NTSTATUS cm_open_connection(struct winbindd_domain *domain,
1303 struct winbindd_cm_conn *new_conn)
1305 TALLOC_CTX *mem_ctx;
1307 char *saf_servername = saf_fetch( domain->name );
1310 if ((mem_ctx = talloc_init("cm_open_connection")) == NULL) {
1311 SAFE_FREE(saf_servername);
1312 set_domain_offline(domain);
1313 return NT_STATUS_NO_MEMORY;
1316 /* we have to check the server affinity cache here since
1317 later we selecte a DC based on response time and not preference */
1319 /* Check the negative connection cache
1320 before talking to it. It going down may have
1321 triggered the reconnection. */
1323 if ( saf_servername && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, saf_servername))) {
1325 DEBUG(10,("cm_open_connection: saf_servername is '%s' for domain %s\n",
1326 saf_servername, domain->name ));
1328 /* convert an ip address to a name */
1329 if (is_ipaddress( saf_servername ) ) {
1331 struct sockaddr_storage ss;
1333 if (!interpret_string_addr(&ss, saf_servername,
1335 return NT_STATUS_UNSUCCESSFUL;
1337 if (dcip_to_name( domain, &ss, saf_name )) {
1338 fstrcpy( domain->dcname, saf_name );
1340 winbind_add_failed_connection_entry(
1341 domain, saf_servername,
1342 NT_STATUS_UNSUCCESSFUL);
1345 fstrcpy( domain->dcname, saf_servername );
1348 SAFE_FREE( saf_servername );
1351 for (retries = 0; retries < 3; retries++) {
1355 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1357 DEBUG(10,("cm_open_connection: dcname is '%s' for domain %s\n",
1358 domain->dcname, domain->name ));
1361 && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, domain->dcname))
1362 && (resolve_name(domain->dcname, &domain->dcaddr, 0x20)))
1364 struct sockaddr_storage *addrs = NULL;
1368 if (!add_sockaddr_to_array(mem_ctx, &domain->dcaddr, 445, &addrs, &num_addrs)) {
1369 set_domain_offline(domain);
1370 talloc_destroy(mem_ctx);
1371 return NT_STATUS_NO_MEMORY;
1373 if (!add_sockaddr_to_array(mem_ctx, &domain->dcaddr, 139, &addrs, &num_addrs)) {
1374 set_domain_offline(domain);
1375 talloc_destroy(mem_ctx);
1376 return NT_STATUS_NO_MEMORY;
1379 /* 5 second timeout. */
1380 if (!open_any_socket_out(addrs, num_addrs, 5000, &dummy, &fd)) {
1386 && !find_new_dc(mem_ctx, domain, domain->dcname, &domain->dcaddr, &fd))
1388 /* This is the one place where we will
1389 set the global winbindd offline state
1390 to true, if a "WINBINDD_OFFLINE" entry
1391 is found in the winbindd cache. */
1392 set_global_winbindd_state_offline();
1396 new_conn->cli = NULL;
1398 result = cm_prepare_connection(domain, fd, domain->dcname,
1399 &new_conn->cli, &retry);
1405 if (NT_STATUS_IS_OK(result)) {
1407 winbindd_set_locator_kdc_envs(domain);
1409 if (domain->online == False) {
1410 /* We're changing state from offline to online. */
1411 set_global_winbindd_state_online();
1413 set_domain_online(domain);
1415 /* Ensure we setup the retry handler. */
1416 set_domain_offline(domain);
1419 talloc_destroy(mem_ctx);
1423 /* Close down all open pipes on a connection. */
1425 void invalidate_cm_connection(struct winbindd_cm_conn *conn)
1427 /* We're closing down a possibly dead
1428 connection. Don't have impossibly long (10s) timeouts. */
1431 cli_set_timeout(conn->cli, 1000); /* 1 second. */
1434 if (conn->samr_pipe != NULL) {
1435 TALLOC_FREE(conn->samr_pipe);
1436 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1438 cli_set_timeout(conn->cli, 500);
1442 if (conn->lsa_pipe != NULL) {
1443 TALLOC_FREE(conn->lsa_pipe);
1444 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1446 cli_set_timeout(conn->cli, 500);
1450 if (conn->netlogon_pipe != NULL) {
1451 TALLOC_FREE(conn->netlogon_pipe);
1452 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1454 cli_set_timeout(conn->cli, 500);
1459 cli_shutdown(conn->cli);
1465 void close_conns_after_fork(void)
1467 struct winbindd_domain *domain;
1469 for (domain = domain_list(); domain; domain = domain->next) {
1470 if (domain->conn.cli == NULL)
1473 if (domain->conn.cli->fd == -1)
1476 close(domain->conn.cli->fd);
1477 domain->conn.cli->fd = -1;
1481 static bool connection_ok(struct winbindd_domain *domain)
1483 if (domain->conn.cli == NULL) {
1484 DEBUG(8, ("connection_ok: Connection to %s for domain %s has NULL "
1485 "cli!\n", domain->dcname, domain->name));
1489 if (!domain->conn.cli->initialised) {
1490 DEBUG(3, ("connection_ok: Connection to %s for domain %s was never "
1491 "initialised!\n", domain->dcname, domain->name));
1495 if (domain->conn.cli->fd == -1) {
1496 DEBUG(3, ("connection_ok: Connection to %s for domain %s has died or was "
1497 "never started (fd == -1)\n",
1498 domain->dcname, domain->name));
1502 if (domain->online == False) {
1503 DEBUG(3, ("connection_ok: Domain %s is offline\n", domain->name));
1510 /* Initialize a new connection up to the RPC BIND.
1511 Bypass online status check so always does network calls. */
1513 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain)
1517 /* Internal connections never use the network. */
1518 if (domain->internal) {
1519 domain->initialized = True;
1520 return NT_STATUS_OK;
1523 if (connection_ok(domain)) {
1524 if (!domain->initialized) {
1525 set_dc_type_and_flags(domain);
1527 return NT_STATUS_OK;
1530 invalidate_cm_connection(&domain->conn);
1532 result = cm_open_connection(domain, &domain->conn);
1534 if (NT_STATUS_IS_OK(result) && !domain->initialized) {
1535 set_dc_type_and_flags(domain);
1541 NTSTATUS init_dc_connection(struct winbindd_domain *domain)
1543 if (domain->initialized && !domain->online) {
1544 /* We check for online status elsewhere. */
1545 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1548 return init_dc_connection_network(domain);
1551 /******************************************************************************
1552 Set the trust flags (direction and forest location) for a domain
1553 ******************************************************************************/
1555 static bool set_dc_type_and_flags_trustinfo( struct winbindd_domain *domain )
1557 struct winbindd_domain *our_domain;
1558 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1559 struct netr_DomainTrustList trusts;
1561 uint32 flags = (NETR_TRUST_FLAG_IN_FOREST |
1562 NETR_TRUST_FLAG_OUTBOUND |
1563 NETR_TRUST_FLAG_INBOUND);
1564 struct rpc_pipe_client *cli;
1565 TALLOC_CTX *mem_ctx = NULL;
1567 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s\n", domain->name ));
1569 /* Our primary domain doesn't need to worry about trust flags.
1570 Force it to go through the network setup */
1571 if ( domain->primary ) {
1575 our_domain = find_our_domain();
1577 if ( !connection_ok(our_domain) ) {
1578 DEBUG(3,("set_dc_type_and_flags_trustinfo: No connection to our domain!\n"));
1582 /* This won't work unless our domain is AD */
1584 if ( !our_domain->active_directory ) {
1588 /* Use DsEnumerateDomainTrusts to get us the trust direction
1591 result = cm_connect_netlogon(our_domain, &cli);
1593 if (!NT_STATUS_IS_OK(result)) {
1594 DEBUG(5, ("set_dc_type_and_flags_trustinfo: Could not open "
1595 "a connection to %s for PIPE_NETLOGON (%s)\n",
1596 domain->name, nt_errstr(result)));
1600 if ( (mem_ctx = talloc_init("set_dc_type_and_flags_trustinfo")) == NULL ) {
1601 DEBUG(0,("set_dc_type_and_flags_trustinfo: talloc_init() failed!\n"));
1605 result = rpccli_netr_DsrEnumerateDomainTrusts(cli, mem_ctx,
1610 if (!NT_STATUS_IS_OK(result)) {
1611 DEBUG(0,("set_dc_type_and_flags_trustinfo: "
1612 "failed to query trusted domain list: %s\n",
1613 nt_errstr(result)));
1614 talloc_destroy(mem_ctx);
1618 /* Now find the domain name and get the flags */
1620 for ( i=0; i<trusts.count; i++ ) {
1621 if ( strequal( domain->name, trusts.array[i].netbios_name) ) {
1622 domain->domain_flags = trusts.array[i].trust_flags;
1623 domain->domain_type = trusts.array[i].trust_type;
1624 domain->domain_trust_attribs = trusts.array[i].trust_attributes;
1626 if ( domain->domain_type == NETR_TRUST_TYPE_UPLEVEL )
1627 domain->active_directory = True;
1629 /* This flag is only set if the domain is *our*
1630 primary domain and the primary domain is in
1633 domain->native_mode = (domain->domain_flags & NETR_TRUST_FLAG_NATIVE);
1635 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s is %sin "
1636 "native mode.\n", domain->name,
1637 domain->native_mode ? "" : "NOT "));
1639 DEBUG(5,("set_dc_type_and_flags_trustinfo: domain %s is %s"
1640 "running active directory.\n", domain->name,
1641 domain->active_directory ? "" : "NOT "));
1644 domain->initialized = True;
1646 if ( !winbindd_can_contact_domain( domain) )
1647 domain->internal = True;
1653 talloc_destroy( mem_ctx );
1655 return domain->initialized;
1658 /******************************************************************************
1659 We can 'sense' certain things about the DC by it's replies to certain
1662 This tells us if this particular remote server is Active Directory, and if it
1664 ******************************************************************************/
1666 static void set_dc_type_and_flags_connect( struct winbindd_domain *domain )
1670 TALLOC_CTX *mem_ctx = NULL;
1671 struct rpc_pipe_client *cli;
1673 union dssetup_DsRoleInfo info;
1674 union lsa_PolicyInformation *lsa_info = NULL;
1676 if (!connection_ok(domain)) {
1680 mem_ctx = talloc_init("set_dc_type_and_flags on domain %s\n",
1683 DEBUG(1, ("set_dc_type_and_flags_connect: talloc_init() failed\n"));
1687 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s\n", domain->name ));
1689 cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_DSSETUP,
1693 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1694 "PI_DSSETUP on domain %s: (%s)\n",
1695 domain->name, nt_errstr(result)));
1697 /* if this is just a non-AD domain we need to continue
1698 * identifying so that we can in the end return with
1699 * domain->initialized = True - gd */
1704 result = rpccli_dssetup_DsRoleGetPrimaryDomainInformation(cli, mem_ctx,
1705 DS_ROLE_BASIC_INFORMATION,
1710 if (!NT_STATUS_IS_OK(result)) {
1711 DEBUG(5, ("set_dc_type_and_flags_connect: rpccli_ds_getprimarydominfo "
1712 "on domain %s failed: (%s)\n",
1713 domain->name, nt_errstr(result)));
1715 /* older samba3 DCs will return DCERPC_FAULT_OP_RNG_ERROR for
1716 * every opcode on the DSSETUP pipe, continue with
1717 * no_dssetup mode here as well to get domain->initialized
1720 if (NT_STATUS_V(result) == DCERPC_FAULT_OP_RNG_ERROR) {
1724 TALLOC_FREE(mem_ctx);
1728 if ((info.basic.flags & DS_ROLE_PRIMARY_DS_RUNNING) &&
1729 !(info.basic.flags & DS_ROLE_PRIMARY_DS_MIXED_MODE)) {
1730 domain->native_mode = True;
1732 domain->native_mode = False;
1736 cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_LSARPC, &result);
1739 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1740 "PI_LSARPC on domain %s: (%s)\n",
1741 domain->name, nt_errstr(result)));
1743 TALLOC_FREE(mem_ctx);
1747 result = rpccli_lsa_open_policy2(cli, mem_ctx, True,
1748 SEC_RIGHTS_MAXIMUM_ALLOWED, &pol);
1750 if (NT_STATUS_IS_OK(result)) {
1751 /* This particular query is exactly what Win2k clients use
1752 to determine that the DC is active directory */
1753 result = rpccli_lsa_QueryInfoPolicy2(cli, mem_ctx,
1755 LSA_POLICY_INFO_DNS,
1759 if (NT_STATUS_IS_OK(result)) {
1760 domain->active_directory = True;
1762 if (lsa_info->dns.name.string) {
1763 fstrcpy(domain->name, lsa_info->dns.name.string);
1766 if (lsa_info->dns.dns_domain.string) {
1767 fstrcpy(domain->alt_name,
1768 lsa_info->dns.dns_domain.string);
1771 /* See if we can set some domain trust flags about
1774 if (lsa_info->dns.dns_forest.string) {
1775 fstrcpy(domain->forest_name,
1776 lsa_info->dns.dns_forest.string);
1778 if (strequal(domain->forest_name, domain->alt_name)) {
1779 domain->domain_flags |= NETR_TRUST_FLAG_TREEROOT;
1783 if (lsa_info->dns.sid) {
1784 sid_copy(&domain->sid, lsa_info->dns.sid);
1787 domain->active_directory = False;
1789 result = rpccli_lsa_open_policy(cli, mem_ctx, True,
1790 SEC_RIGHTS_MAXIMUM_ALLOWED,
1793 if (!NT_STATUS_IS_OK(result)) {
1797 result = rpccli_lsa_QueryInfoPolicy(cli, mem_ctx,
1799 LSA_POLICY_INFO_ACCOUNT_DOMAIN,
1802 if (NT_STATUS_IS_OK(result)) {
1804 if (lsa_info->account_domain.name.string) {
1805 fstrcpy(domain->name,
1806 lsa_info->account_domain.name.string);
1809 if (lsa_info->account_domain.sid) {
1810 sid_copy(&domain->sid, lsa_info->account_domain.sid);
1816 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s is %sin native mode.\n",
1817 domain->name, domain->native_mode ? "" : "NOT "));
1819 DEBUG(5,("set_dc_type_and_flags_connect: domain %s is %srunning active directory.\n",
1820 domain->name, domain->active_directory ? "" : "NOT "));
1824 TALLOC_FREE(mem_ctx);
1826 domain->initialized = True;
1829 /**********************************************************************
1830 Set the domain_flags (trust attributes, domain operating modes, etc...
1831 ***********************************************************************/
1833 static void set_dc_type_and_flags( struct winbindd_domain *domain )
1835 /* we always have to contact our primary domain */
1837 if ( domain->primary ) {
1838 DEBUG(10,("set_dc_type_and_flags: setting up flags for "
1839 "primary domain\n"));
1840 set_dc_type_and_flags_connect( domain );
1844 /* Use our DC to get the information if possible */
1846 if ( !set_dc_type_and_flags_trustinfo( domain ) ) {
1847 /* Otherwise, fallback to contacting the
1849 set_dc_type_and_flags_connect( domain );
1857 /**********************************************************************
1858 ***********************************************************************/
1860 static bool cm_get_schannel_dcinfo(struct winbindd_domain *domain,
1861 struct dcinfo **ppdc)
1864 struct rpc_pipe_client *netlogon_pipe;
1866 if (lp_client_schannel() == False) {
1870 result = cm_connect_netlogon(domain, &netlogon_pipe);
1871 if (!NT_STATUS_IS_OK(result)) {
1875 /* Return a pointer to the struct dcinfo from the
1878 *ppdc = domain->conn.netlogon_pipe->dc;
1882 NTSTATUS cm_connect_sam(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
1883 struct rpc_pipe_client **cli, POLICY_HND *sam_handle)
1885 struct winbindd_cm_conn *conn;
1886 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1888 struct dcinfo *p_dcinfo;
1889 char *machine_password = NULL;
1890 char *machine_account = NULL;
1891 char *domain_name = NULL;
1893 result = init_dc_connection(domain);
1894 if (!NT_STATUS_IS_OK(result)) {
1898 conn = &domain->conn;
1900 if (conn->samr_pipe != NULL) {
1905 * No SAMR pipe yet. Attempt to get an NTLMSSP SPNEGO authenticated
1906 * sign and sealed pipe using the machine account password by
1907 * preference. If we can't - try schannel, if that fails, try
1911 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
1912 if ((conn->cli->user_name[0] == '\0') ||
1913 (conn->cli->domain[0] == '\0') ||
1914 (conn_pwd[0] == '\0'))
1916 result = get_trust_creds(domain, &machine_password,
1917 &machine_account, NULL);
1918 if (!NT_STATUS_IS_OK(result)) {
1919 DEBUG(10, ("cm_connect_sam: No no user available for "
1920 "domain %s, trying schannel\n", conn->cli->domain));
1923 domain_name = domain->name;
1925 machine_password = SMB_STRDUP(conn_pwd);
1926 machine_account = SMB_STRDUP(conn->cli->user_name);
1927 domain_name = conn->cli->domain;
1930 if (!machine_password || !machine_account) {
1931 result = NT_STATUS_NO_MEMORY;
1935 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
1936 authenticated SAMR pipe with sign & seal. */
1938 cli_rpc_pipe_open_spnego_ntlmssp(conn->cli, PI_SAMR,
1939 PIPE_AUTH_LEVEL_PRIVACY,
1942 machine_password, &result);
1944 if (conn->samr_pipe == NULL) {
1945 DEBUG(10,("cm_connect_sam: failed to connect to SAMR "
1946 "pipe for domain %s using NTLMSSP "
1947 "authenticated pipe: user %s\\%s. Error was "
1948 "%s\n", domain->name, domain_name,
1949 machine_account, nt_errstr(result)));
1953 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for "
1954 "domain %s using NTLMSSP authenticated "
1955 "pipe: user %s\\%s\n", domain->name,
1956 domain_name, machine_account));
1958 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
1959 conn->samr_pipe->desthost,
1960 SEC_RIGHTS_MAXIMUM_ALLOWED,
1961 &conn->sam_connect_handle);
1962 if (NT_STATUS_IS_OK(result)) {
1965 DEBUG(10,("cm_connect_sam: ntlmssp-sealed rpccli_samr_Connect2 "
1966 "failed for domain %s, error was %s. Trying schannel\n",
1967 domain->name, nt_errstr(result) ));
1968 TALLOC_FREE(conn->samr_pipe);
1972 /* Fall back to schannel if it's a W2K pre-SP1 box. */
1974 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
1975 /* If this call fails - conn->cli can now be NULL ! */
1976 DEBUG(10, ("cm_connect_sam: Could not get schannel auth info "
1977 "for domain %s, trying anon\n", domain->name));
1980 conn->samr_pipe = cli_rpc_pipe_open_schannel_with_key
1981 (conn->cli, PI_SAMR, PIPE_AUTH_LEVEL_PRIVACY,
1982 domain->name, p_dcinfo, &result);
1984 if (conn->samr_pipe == NULL) {
1985 DEBUG(10,("cm_connect_sam: failed to connect to SAMR pipe for "
1986 "domain %s using schannel. Error was %s\n",
1987 domain->name, nt_errstr(result) ));
1990 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for domain %s using "
1991 "schannel.\n", domain->name ));
1993 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
1994 conn->samr_pipe->desthost,
1995 SEC_RIGHTS_MAXIMUM_ALLOWED,
1996 &conn->sam_connect_handle);
1997 if (NT_STATUS_IS_OK(result)) {
2000 DEBUG(10,("cm_connect_sam: schannel-sealed rpccli_samr_Connect2 failed "
2001 "for domain %s, error was %s. Trying anonymous\n",
2002 domain->name, nt_errstr(result) ));
2003 TALLOC_FREE(conn->samr_pipe);
2007 /* Finally fall back to anonymous. */
2008 conn->samr_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_SAMR,
2011 if (conn->samr_pipe == NULL) {
2012 result = NT_STATUS_PIPE_NOT_AVAILABLE;
2016 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2017 conn->samr_pipe->desthost,
2018 SEC_RIGHTS_MAXIMUM_ALLOWED,
2019 &conn->sam_connect_handle);
2020 if (!NT_STATUS_IS_OK(result)) {
2021 DEBUG(10,("cm_connect_sam: rpccli_samr_Connect2 failed "
2022 "for domain %s Error was %s\n",
2023 domain->name, nt_errstr(result) ));
2028 result = rpccli_samr_OpenDomain(conn->samr_pipe,
2030 &conn->sam_connect_handle,
2031 SEC_RIGHTS_MAXIMUM_ALLOWED,
2033 &conn->sam_domain_handle);
2037 if (!NT_STATUS_IS_OK(result)) {
2038 invalidate_cm_connection(conn);
2042 *cli = conn->samr_pipe;
2043 *sam_handle = conn->sam_domain_handle;
2044 SAFE_FREE(machine_password);
2045 SAFE_FREE(machine_account);
2049 NTSTATUS cm_connect_lsa(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2050 struct rpc_pipe_client **cli, POLICY_HND *lsa_policy)
2052 struct winbindd_cm_conn *conn;
2053 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2055 struct dcinfo *p_dcinfo;
2057 result = init_dc_connection(domain);
2058 if (!NT_STATUS_IS_OK(result))
2061 conn = &domain->conn;
2063 if (conn->lsa_pipe != NULL) {
2067 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
2068 if ((conn->cli->user_name[0] == '\0') ||
2069 (conn->cli->domain[0] == '\0') ||
2070 (conn_pwd[0] == '\0')) {
2071 DEBUG(10, ("cm_connect_lsa: No no user available for "
2072 "domain %s, trying schannel\n", conn->cli->domain));
2076 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2077 * authenticated LSA pipe with sign & seal. */
2078 conn->lsa_pipe = cli_rpc_pipe_open_spnego_ntlmssp
2079 (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
2080 conn->cli->domain, conn->cli->user_name, conn_pwd, &result);
2082 if (conn->lsa_pipe == NULL) {
2083 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2084 "domain %s using NTLMSSP authenticated pipe: user "
2085 "%s\\%s. Error was %s. Trying schannel.\n",
2086 domain->name, conn->cli->domain,
2087 conn->cli->user_name, nt_errstr(result)));
2091 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2092 "NTLMSSP authenticated pipe: user %s\\%s\n",
2093 domain->name, conn->cli->domain, conn->cli->user_name ));
2095 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2096 SEC_RIGHTS_MAXIMUM_ALLOWED,
2098 if (NT_STATUS_IS_OK(result)) {
2102 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2105 TALLOC_FREE(conn->lsa_pipe);
2109 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2111 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
2112 /* If this call fails - conn->cli can now be NULL ! */
2113 DEBUG(10, ("cm_connect_lsa: Could not get schannel auth info "
2114 "for domain %s, trying anon\n", domain->name));
2117 conn->lsa_pipe = cli_rpc_pipe_open_schannel_with_key
2118 (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
2119 domain->name, p_dcinfo, &result);
2121 if (conn->lsa_pipe == NULL) {
2122 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2123 "domain %s using schannel. Error was %s\n",
2124 domain->name, nt_errstr(result) ));
2127 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2128 "schannel.\n", domain->name ));
2130 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2131 SEC_RIGHTS_MAXIMUM_ALLOWED,
2133 if (NT_STATUS_IS_OK(result)) {
2137 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2140 TALLOC_FREE(conn->lsa_pipe);
2144 conn->lsa_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_LSARPC,
2146 if (conn->lsa_pipe == NULL) {
2147 result = NT_STATUS_PIPE_NOT_AVAILABLE;
2151 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2152 SEC_RIGHTS_MAXIMUM_ALLOWED,
2155 if (!NT_STATUS_IS_OK(result)) {
2156 invalidate_cm_connection(conn);
2160 *cli = conn->lsa_pipe;
2161 *lsa_policy = conn->lsa_policy;
2165 /****************************************************************************
2166 Open the netlogon pipe to this DC. Use schannel if specified in client conf.
2167 session key stored in conn->netlogon_pipe->dc->sess_key.
2168 ****************************************************************************/
2170 NTSTATUS cm_connect_netlogon(struct winbindd_domain *domain,
2171 struct rpc_pipe_client **cli)
2173 struct winbindd_cm_conn *conn;
2176 uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
2178 uint32 sec_chan_type;
2179 const char *account_name;
2180 struct rpc_pipe_client *netlogon_pipe = NULL;
2184 result = init_dc_connection(domain);
2185 if (!NT_STATUS_IS_OK(result)) {
2189 conn = &domain->conn;
2191 if (conn->netlogon_pipe != NULL) {
2192 *cli = conn->netlogon_pipe;
2193 return NT_STATUS_OK;
2196 netlogon_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_NETLOGON,
2198 if (netlogon_pipe == NULL) {
2202 if ((!IS_DC) && (!domain->primary)) {
2203 /* Clear the schannel request bit and drop down */
2204 neg_flags &= ~NETLOGON_NEG_SCHANNEL;
2208 if (lp_client_schannel() != False) {
2209 neg_flags |= NETLOGON_NEG_SCHANNEL;
2212 if (!get_trust_pw_hash(domain->name, mach_pwd, &account_name,
2215 TALLOC_FREE(netlogon_pipe);
2216 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2219 result = rpccli_netlogon_setup_creds(
2221 domain->dcname, /* server name. */
2222 domain->name, /* domain name */
2223 global_myname(), /* client name */
2224 account_name, /* machine account */
2225 mach_pwd, /* machine password */
2226 sec_chan_type, /* from get_trust_pw */
2229 if (!NT_STATUS_IS_OK(result)) {
2230 TALLOC_FREE(netlogon_pipe);
2234 if ((lp_client_schannel() == True) &&
2235 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2236 DEBUG(3, ("Server did not offer schannel\n"));
2237 TALLOC_FREE(netlogon_pipe);
2238 return NT_STATUS_ACCESS_DENIED;
2242 if ((lp_client_schannel() == False) ||
2243 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2245 * NetSamLogonEx only works for schannel
2247 domain->can_do_samlogon_ex = False;
2249 /* We're done - just keep the existing connection to NETLOGON
2251 conn->netlogon_pipe = netlogon_pipe;
2252 *cli = conn->netlogon_pipe;
2253 return NT_STATUS_OK;
2256 /* Using the credentials from the first pipe, open a signed and sealed
2257 second netlogon pipe. The session key is stored in the schannel
2258 part of the new pipe auth struct.
2261 conn->netlogon_pipe =
2262 cli_rpc_pipe_open_schannel_with_key(conn->cli,
2264 PIPE_AUTH_LEVEL_PRIVACY,
2269 /* We can now close the initial netlogon pipe. */
2270 TALLOC_FREE(netlogon_pipe);
2272 if (conn->netlogon_pipe == NULL) {
2273 DEBUG(3, ("Could not open schannel'ed NETLOGON pipe. Error "
2274 "was %s\n", nt_errstr(result)));
2276 /* make sure we return something besides OK */
2277 return !NT_STATUS_IS_OK(result) ? result : NT_STATUS_PIPE_NOT_AVAILABLE;
2281 * Try NetSamLogonEx for AD domains
2283 domain->can_do_samlogon_ex = domain->active_directory;
2285 *cli = conn->netlogon_pipe;
2286 return NT_STATUS_OK;