2 Unix SMB/CIFS implementation.
4 Winbind daemon connection manager
6 Copyright (C) Tim Potter 2001
7 Copyright (C) Andrew Bartlett 2002
8 Copyright (C) Gerald (Jerry) Carter 2003-2005.
9 Copyright (C) Volker Lendecke 2004-2005
10 Copyright (C) Jeremy Allison 2006
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 3 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 We need to manage connections to domain controllers without having to
28 mess up the main winbindd code with other issues. The aim of the
29 connection manager is to:
31 - make connections to domain controllers and cache them
32 - re-establish connections when networks or servers go down
33 - centralise the policy on connection timeouts, domain controller
35 - manage re-entrancy for when winbindd becomes able to handle
36 multiple outstanding rpc requests
38 Why not have connection management as part of the rpc layer like tng?
39 Good question. This code may morph into libsmb/rpc_cache.c or something
40 like that but at the moment it's simply staying as part of winbind. I
41 think the TNG architecture of forcing every user of the rpc layer to use
42 the connection caching system is a bad idea. It should be an optional
43 method of using the routines.
45 The TNG design is quite good but I disagree with some aspects of the
53 - I'm pretty annoyed by all the make_nmb_name() stuff. It should be
54 moved down into another function.
56 - Take care when destroying cli_structs as they can be shared between
65 #define DBGC_CLASS DBGC_WINBIND
69 struct sockaddr_storage ss;
72 extern struct winbindd_methods reconnect_methods;
73 extern bool override_logfile;
75 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain);
76 static void set_dc_type_and_flags( struct winbindd_domain *domain );
77 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
78 struct dc_name_ip **dcs, int *num_dcs);
80 /****************************************************************
81 Child failed to find DC's. Reschedule check.
82 ****************************************************************/
84 static void msg_failed_to_go_online(struct messaging_context *msg,
87 struct server_id server_id,
90 struct winbindd_domain *domain;
91 const char *domainname = (const char *)data->data;
93 if (data->data == NULL || data->length == 0) {
97 DEBUG(5,("msg_fail_to_go_online: received for domain %s.\n", domainname));
99 for (domain = domain_list(); domain; domain = domain->next) {
100 if (domain->internal) {
104 if (strequal(domain->name, domainname)) {
105 if (domain->online) {
106 /* We're already online, ignore. */
107 DEBUG(5,("msg_fail_to_go_online: domain %s "
108 "already online.\n", domainname));
112 /* Reschedule the online check. */
113 set_domain_offline(domain);
119 /****************************************************************
120 Actually cause a reconnect from a message.
121 ****************************************************************/
123 static void msg_try_to_go_online(struct messaging_context *msg,
126 struct server_id server_id,
129 struct winbindd_domain *domain;
130 const char *domainname = (const char *)data->data;
132 if (data->data == NULL || data->length == 0) {
136 DEBUG(5,("msg_try_to_go_online: received for domain %s.\n", domainname));
138 for (domain = domain_list(); domain; domain = domain->next) {
139 if (domain->internal) {
143 if (strequal(domain->name, domainname)) {
145 if (domain->online) {
146 /* We're already online, ignore. */
147 DEBUG(5,("msg_try_to_go_online: domain %s "
148 "already online.\n", domainname));
152 /* This call takes care of setting the online
153 flag to true if we connected, or re-adding
154 the offline handler if false. Bypasses online
155 check so always does network calls. */
157 init_dc_connection_network(domain);
163 /****************************************************************
164 Fork a child to try and contact a DC. Do this as contacting a
165 DC requires blocking lookups and we don't want to block our
167 ****************************************************************/
169 static bool fork_child_dc_connect(struct winbindd_domain *domain)
171 struct dc_name_ip *dcs = NULL;
173 TALLOC_CTX *mem_ctx = NULL;
174 pid_t parent_pid = sys_getpid();
177 if (domain->dc_probe_pid != (pid_t)-1) {
179 * We might already have a DC probe
180 * child working, check.
182 if (process_exists_by_pid(domain->dc_probe_pid)) {
183 DEBUG(10,("fork_child_dc_connect: pid %u already "
184 "checking for DC's.\n",
185 (unsigned int)domain->dc_probe_pid));
188 domain->dc_probe_pid = (pid_t)-1;
191 domain->dc_probe_pid = sys_fork();
193 if (domain->dc_probe_pid == (pid_t)-1) {
194 DEBUG(0, ("fork_child_dc_connect: Could not fork: %s\n", strerror(errno)));
198 if (domain->dc_probe_pid != (pid_t)0) {
200 messaging_register(winbind_messaging_context(), NULL,
201 MSG_WINBIND_TRY_TO_GO_ONLINE,
202 msg_try_to_go_online);
203 messaging_register(winbind_messaging_context(), NULL,
204 MSG_WINBIND_FAILED_TO_GO_ONLINE,
205 msg_failed_to_go_online);
211 /* Leave messages blocked - we will never process one. */
213 if (!override_logfile) {
214 if (asprintf(&lfile, "%s/log.winbindd-dc-connect", get_dyn_LOGFILEBASE()) == -1) {
215 DEBUG(0, ("fork_child_dc_connect: out of memory.\n"));
220 if (!winbindd_reinit_after_fork(lfile)) {
221 messaging_send_buf(winbind_messaging_context(),
222 pid_to_procid(parent_pid),
223 MSG_WINBIND_FAILED_TO_GO_ONLINE,
224 (uint8 *)domain->name,
225 strlen(domain->name)+1);
230 mem_ctx = talloc_init("fork_child_dc_connect");
232 DEBUG(0,("talloc_init failed.\n"));
233 messaging_send_buf(winbind_messaging_context(),
234 pid_to_procid(parent_pid),
235 MSG_WINBIND_FAILED_TO_GO_ONLINE,
236 (uint8 *)domain->name,
237 strlen(domain->name)+1);
241 if ((!get_dcs(mem_ctx, domain, &dcs, &num_dcs)) || (num_dcs == 0)) {
242 /* Still offline ? Can't find DC's. */
243 messaging_send_buf(winbind_messaging_context(),
244 pid_to_procid(parent_pid),
245 MSG_WINBIND_FAILED_TO_GO_ONLINE,
246 (uint8 *)domain->name,
247 strlen(domain->name)+1);
251 /* We got a DC. Send a message to our parent to get it to
252 try and do the same. */
254 messaging_send_buf(winbind_messaging_context(),
255 pid_to_procid(parent_pid),
256 MSG_WINBIND_TRY_TO_GO_ONLINE,
257 (uint8 *)domain->name,
258 strlen(domain->name)+1);
262 /****************************************************************
263 Handler triggered if we're offline to try and detect a DC.
264 ****************************************************************/
266 static void check_domain_online_handler(struct event_context *ctx,
267 struct timed_event *te,
271 struct winbindd_domain *domain =
272 (struct winbindd_domain *)private_data;
274 DEBUG(10,("check_domain_online_handler: called for domain "
275 "%s (online = %s)\n", domain->name,
276 domain->online ? "True" : "False" ));
278 TALLOC_FREE(domain->check_online_event);
280 /* Are we still in "startup" mode ? */
282 if (domain->startup && (now.tv_sec > domain->startup_time + 30)) {
283 /* No longer in "startup" mode. */
284 DEBUG(10,("check_domain_online_handler: domain %s no longer in 'startup' mode.\n",
286 domain->startup = False;
289 /* We've been told to stay offline, so stay
292 if (get_global_winbindd_state_offline()) {
293 DEBUG(10,("check_domain_online_handler: domain %s remaining globally offline\n",
298 /* Fork a child to test if it can contact a DC.
299 If it can then send ourselves a message to
300 cause a reconnect. */
302 fork_child_dc_connect(domain);
305 /****************************************************************
306 If we're still offline setup the timeout check.
307 ****************************************************************/
309 static void calc_new_online_timeout_check(struct winbindd_domain *domain)
311 int wbr = lp_winbind_reconnect_delay();
313 if (domain->startup) {
314 domain->check_online_timeout = 10;
315 } else if (domain->check_online_timeout < wbr) {
316 domain->check_online_timeout = wbr;
320 /****************************************************************
321 Set domain offline and also add handler to put us back online
323 ****************************************************************/
325 void set_domain_offline(struct winbindd_domain *domain)
327 DEBUG(10,("set_domain_offline: called for domain %s\n",
330 TALLOC_FREE(domain->check_online_event);
332 if (domain->internal) {
333 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
338 domain->online = False;
340 /* Offline domains are always initialized. They're
341 re-initialized when they go back online. */
343 domain->initialized = True;
345 /* We only add the timeout handler that checks and
346 allows us to go back online when we've not
347 been told to remain offline. */
349 if (get_global_winbindd_state_offline()) {
350 DEBUG(10,("set_domain_offline: domain %s remaining globally offline\n",
355 /* If we're in statup mode, check again in 10 seconds, not in
356 lp_winbind_reconnect_delay() seconds (which is 30 seconds by default). */
358 calc_new_online_timeout_check(domain);
360 domain->check_online_event = event_add_timed(winbind_event_context(),
362 timeval_current_ofs(domain->check_online_timeout,0),
363 check_domain_online_handler,
366 /* The above *has* to succeed for winbindd to work. */
367 if (!domain->check_online_event) {
368 smb_panic("set_domain_offline: failed to add online handler");
371 DEBUG(10,("set_domain_offline: added event handler for domain %s\n",
374 /* Send an offline message to the idmap child when our
375 primary domain goes offline */
377 if ( domain->primary ) {
378 struct winbindd_child *idmap = idmap_child();
380 if ( idmap->pid != 0 ) {
381 messaging_send_buf(winbind_messaging_context(),
382 pid_to_procid(idmap->pid),
384 (uint8 *)domain->name,
385 strlen(domain->name)+1);
392 /****************************************************************
393 Set domain online - if allowed.
394 ****************************************************************/
396 static void set_domain_online(struct winbindd_domain *domain)
398 DEBUG(10,("set_domain_online: called for domain %s\n",
401 if (domain->internal) {
402 DEBUG(3,("set_domain_online: domain %s is internal - logic error.\n",
407 if (get_global_winbindd_state_offline()) {
408 DEBUG(10,("set_domain_online: domain %s remaining globally offline\n",
413 winbindd_set_locator_kdc_envs(domain);
415 /* If we are waiting to get a krb5 ticket, trigger immediately. */
416 ccache_regain_all_now();
418 /* Ok, we're out of any startup mode now... */
419 domain->startup = False;
421 if (domain->online == False) {
422 /* We were offline - now we're online. We default to
423 using the MS-RPC backend if we started offline,
424 and if we're going online for the first time we
425 should really re-initialize the backends and the
426 checks to see if we're talking to an AD or NT domain.
429 domain->initialized = False;
431 /* 'reconnect_methods' is the MS-RPC backend. */
432 if (domain->backend == &reconnect_methods) {
433 domain->backend = NULL;
437 /* Ensure we have no online timeout checks. */
438 domain->check_online_timeout = 0;
439 TALLOC_FREE(domain->check_online_event);
441 /* Ensure we ignore any pending child messages. */
442 messaging_deregister(winbind_messaging_context(),
443 MSG_WINBIND_TRY_TO_GO_ONLINE, NULL);
444 messaging_deregister(winbind_messaging_context(),
445 MSG_WINBIND_FAILED_TO_GO_ONLINE, NULL);
447 domain->online = True;
449 /* Send an online message to the idmap child when our
450 primary domain comes online */
452 if ( domain->primary ) {
453 struct winbindd_child *idmap = idmap_child();
455 if ( idmap->pid != 0 ) {
456 messaging_send_buf(winbind_messaging_context(),
457 pid_to_procid(idmap->pid),
459 (uint8 *)domain->name,
460 strlen(domain->name)+1);
467 /****************************************************************
468 Requested to set a domain online.
469 ****************************************************************/
471 void set_domain_online_request(struct winbindd_domain *domain)
475 DEBUG(10,("set_domain_online_request: called for domain %s\n",
478 if (get_global_winbindd_state_offline()) {
479 DEBUG(10,("set_domain_online_request: domain %s remaining globally offline\n",
484 /* We've been told it's safe to go online and
485 try and connect to a DC. But I don't believe it
486 because network manager seems to lie.
487 Wait at least 5 seconds. Heuristics suck... */
492 /* Go into "startup" mode again. */
493 domain->startup_time = tev.tv_sec;
494 domain->startup = True;
498 if (!domain->check_online_event) {
499 /* If we've come from being globally offline we
500 don't have a check online event handler set.
501 We need to add one now we're trying to go
504 DEBUG(10,("set_domain_online_request: domain %s was globally offline.\n",
508 TALLOC_FREE(domain->check_online_event);
510 domain->check_online_event = event_add_timed(winbind_event_context(),
513 check_domain_online_handler,
516 /* The above *has* to succeed for winbindd to work. */
517 if (!domain->check_online_event) {
518 smb_panic("set_domain_online_request: failed to add online handler");
522 /****************************************************************
523 Add -ve connection cache entries for domain and realm.
524 ****************************************************************/
526 void winbind_add_failed_connection_entry(const struct winbindd_domain *domain,
530 add_failed_connection_entry(domain->name, server, result);
531 /* If this was the saf name for the last thing we talked to,
533 saf_delete(domain->name);
534 if (*domain->alt_name) {
535 add_failed_connection_entry(domain->alt_name, server, result);
536 saf_delete(domain->alt_name);
538 winbindd_unset_locator_kdc_env(domain);
541 /* Choose between anonymous or authenticated connections. We need to use
542 an authenticated connection if DCs have the RestrictAnonymous registry
543 entry set > 0, or the "Additional restrictions for anonymous
544 connections" set in the win2k Local Security Policy.
546 Caller to free() result in domain, username, password
549 static void cm_get_ipc_userpass(char **username, char **domain, char **password)
551 *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
552 *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
553 *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
555 if (*username && **username) {
557 if (!*domain || !**domain)
558 *domain = smb_xstrdup(lp_workgroup());
560 if (!*password || !**password)
561 *password = smb_xstrdup("");
563 DEBUG(3, ("cm_get_ipc_userpass: Retrieved auth-user from secrets.tdb [%s\\%s]\n",
564 *domain, *username));
567 DEBUG(3, ("cm_get_ipc_userpass: No auth-user defined\n"));
568 *username = smb_xstrdup("");
569 *domain = smb_xstrdup("");
570 *password = smb_xstrdup("");
574 static bool get_dc_name_via_netlogon(struct winbindd_domain *domain,
576 struct sockaddr_storage *dc_ss)
578 struct winbindd_domain *our_domain = NULL;
579 struct rpc_pipe_client *netlogon_pipe = NULL;
583 unsigned int orig_timeout;
584 const char *tmp = NULL;
587 /* Hmmmm. We can only open one connection to the NETLOGON pipe at the
594 if (domain->primary) {
598 our_domain = find_our_domain();
600 if ((mem_ctx = talloc_init("get_dc_name_via_netlogon")) == NULL) {
604 result = cm_connect_netlogon(our_domain, &netlogon_pipe);
605 if (!NT_STATUS_IS_OK(result)) {
606 talloc_destroy(mem_ctx);
610 /* This call can take a long time - allow the server to time out.
611 35 seconds should do it. */
613 orig_timeout = rpccli_set_timeout(netlogon_pipe, 35000);
615 if (our_domain->active_directory) {
616 struct netr_DsRGetDCNameInfo *domain_info = NULL;
618 result = rpccli_netr_DsRGetDCName(netlogon_pipe,
627 if (NT_STATUS_IS_OK(result) && W_ERROR_IS_OK(werr)) {
629 mem_ctx, domain_info->dc_unc);
631 DEBUG(0, ("talloc_strdup failed\n"));
632 talloc_destroy(mem_ctx);
635 if (strlen(domain->alt_name) == 0) {
636 fstrcpy(domain->alt_name,
637 domain_info->domain_name);
639 if (strlen(domain->forest_name) == 0) {
640 fstrcpy(domain->forest_name,
641 domain_info->forest_name);
645 result = rpccli_netr_GetAnyDCName(netlogon_pipe, mem_ctx,
652 /* And restore our original timeout. */
653 rpccli_set_timeout(netlogon_pipe, orig_timeout);
655 if (!NT_STATUS_IS_OK(result)) {
656 DEBUG(10,("rpccli_netr_GetAnyDCName failed: %s\n",
658 talloc_destroy(mem_ctx);
662 if (!W_ERROR_IS_OK(werr)) {
663 DEBUG(10,("rpccli_netr_GetAnyDCName failed: %s\n",
665 talloc_destroy(mem_ctx);
669 /* rpccli_netr_GetAnyDCName gives us a name with \\ */
670 p = strip_hostname(tmp);
674 talloc_destroy(mem_ctx);
676 DEBUG(10,("rpccli_netr_GetAnyDCName returned %s\n", dcname));
678 if (!resolve_name(dcname, dc_ss, 0x20)) {
686 * Helper function to assemble trust password and account name
688 static NTSTATUS get_trust_creds(const struct winbindd_domain *domain,
689 char **machine_password,
690 char **machine_account,
691 char **machine_krb5_principal)
693 const char *account_name;
694 const char *name = NULL;
696 /* If we are a DC and this is not our own domain */
701 struct winbindd_domain *our_domain = find_our_domain();
704 return NT_STATUS_INVALID_SERVER_STATE;
706 name = our_domain->name;
709 if (!get_trust_pw_clear(name, machine_password,
710 &account_name, NULL))
712 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
715 if ((machine_account != NULL) &&
716 (asprintf(machine_account, "%s$", account_name) == -1))
718 return NT_STATUS_NO_MEMORY;
721 /* For now assume our machine account only exists in our domain */
723 if (machine_krb5_principal != NULL)
725 struct winbindd_domain *our_domain = find_our_domain();
728 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
731 if (asprintf(machine_krb5_principal, "%s$@%s",
732 account_name, our_domain->alt_name) == -1)
734 return NT_STATUS_NO_MEMORY;
737 strupper_m(*machine_krb5_principal);
743 /************************************************************************
744 Given a fd with a just-connected TCP connection to a DC, open a connection
746 ************************************************************************/
748 static NTSTATUS cm_prepare_connection(const struct winbindd_domain *domain,
750 const char *controller,
751 struct cli_state **cli,
754 char *machine_password = NULL;
755 char *machine_krb5_principal = NULL;
756 char *machine_account = NULL;
757 char *ipc_username = NULL;
758 char *ipc_domain = NULL;
759 char *ipc_password = NULL;
761 struct named_mutex *mutex;
763 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
765 struct sockaddr peeraddr;
766 socklen_t peeraddr_len;
768 struct sockaddr_in *peeraddr_in = (struct sockaddr_in *)&peeraddr;
770 DEBUG(10,("cm_prepare_connection: connecting to DC %s for domain %s\n",
771 controller, domain->name ));
775 mutex = grab_named_mutex(talloc_tos(), controller,
776 WINBIND_SERVER_MUTEX_WAIT_TIME);
778 DEBUG(0,("cm_prepare_connection: mutex grab failed for %s\n",
780 result = NT_STATUS_POSSIBLE_DEADLOCK;
784 if ((*cli = cli_initialise()) == NULL) {
785 DEBUG(1, ("Could not cli_initialize\n"));
786 result = NT_STATUS_NO_MEMORY;
790 (*cli)->timeout = 10000; /* 10 seconds */
792 fstrcpy((*cli)->desthost, controller);
793 (*cli)->use_kerberos = True;
795 peeraddr_len = sizeof(peeraddr);
797 if ((getpeername((*cli)->fd, &peeraddr, &peeraddr_len) != 0) ||
798 (peeraddr_len != sizeof(struct sockaddr_in)) ||
799 (peeraddr_in->sin_family != PF_INET))
801 DEBUG(0,("cm_prepare_connection: %s\n", strerror(errno)));
802 result = NT_STATUS_UNSUCCESSFUL;
806 result = cli_negprot(*cli);
808 if (!NT_STATUS_IS_OK(result)) {
809 DEBUG(1, ("cli_negprot failed: %s\n", nt_errstr(result)));
813 if (!is_dc_trusted_domain_situation(domain->name) &&
814 (*cli)->protocol >= PROTOCOL_NT1 &&
815 (*cli)->capabilities & CAP_EXTENDED_SECURITY)
817 ADS_STATUS ads_status;
819 result = get_trust_creds(domain, &machine_password,
821 &machine_krb5_principal);
822 if (!NT_STATUS_IS_OK(result)) {
826 if (lp_security() == SEC_ADS) {
828 /* Try a krb5 session */
830 (*cli)->use_kerberos = True;
831 DEBUG(5, ("connecting to %s from %s with kerberos principal "
832 "[%s] and realm [%s]\n", controller, global_myname(),
833 machine_krb5_principal, domain->alt_name));
835 winbindd_set_locator_kdc_envs(domain);
837 ads_status = cli_session_setup_spnego(*cli,
838 machine_krb5_principal,
843 if (!ADS_ERR_OK(ads_status)) {
844 DEBUG(4,("failed kerberos session setup with %s\n",
845 ads_errstr(ads_status)));
848 result = ads_ntstatus(ads_status);
849 if (NT_STATUS_IS_OK(result)) {
850 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
851 result = cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
852 if (!NT_STATUS_IS_OK(result)) {
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 lp_workgroup(), machine_account));
866 ads_status = cli_session_setup_spnego(*cli,
871 if (!ADS_ERR_OK(ads_status)) {
872 DEBUG(4, ("authenticated session setup failed with %s\n",
873 ads_errstr(ads_status)));
876 result = ads_ntstatus(ads_status);
877 if (NT_STATUS_IS_OK(result)) {
878 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
879 result = cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
880 if (!NT_STATUS_IS_OK(result)) {
883 goto session_setup_done;
887 /* Fall back to non-kerberos session setup with auth_user */
889 (*cli)->use_kerberos = False;
891 cm_get_ipc_userpass(&ipc_username, &ipc_domain, &ipc_password);
893 if ((((*cli)->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) != 0) &&
894 (strlen(ipc_username) > 0)) {
896 /* Only try authenticated if we have a username */
898 DEBUG(5, ("connecting to %s from %s with username "
899 "[%s]\\[%s]\n", controller, global_myname(),
900 ipc_domain, ipc_username));
902 if (NT_STATUS_IS_OK(cli_session_setup(
904 ipc_password, strlen(ipc_password)+1,
905 ipc_password, strlen(ipc_password)+1,
907 /* Successful logon with given username. */
908 result = cli_init_creds(*cli, ipc_username, ipc_domain, ipc_password);
909 if (!NT_STATUS_IS_OK(result)) {
912 goto session_setup_done;
914 DEBUG(4, ("authenticated session setup with user %s\\%s failed.\n",
915 ipc_domain, ipc_username ));
921 /* Fall back to anonymous connection, this might fail later */
922 DEBUG(10,("cm_prepare_connection: falling back to anonymous "
923 "connection for DC %s\n",
926 if (NT_STATUS_IS_OK(cli_session_setup(*cli, "", NULL, 0,
928 DEBUG(5, ("Connected anonymously\n"));
929 result = cli_init_creds(*cli, "", "", "");
930 if (!NT_STATUS_IS_OK(result)) {
933 goto session_setup_done;
936 result = cli_nt_error(*cli);
938 if (NT_STATUS_IS_OK(result))
939 result = NT_STATUS_UNSUCCESSFUL;
941 /* We can't session setup */
947 /* cache the server name for later connections */
949 saf_store( domain->name, (*cli)->desthost );
950 if (domain->alt_name && (*cli)->use_kerberos) {
951 saf_store( domain->alt_name, (*cli)->desthost );
954 winbindd_set_locator_kdc_envs(domain);
956 result = cli_tcon_andx(*cli, "IPC$", "IPC", "", 0);
958 if (!NT_STATUS_IS_OK(result)) {
959 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(result)));
966 /* set the domain if empty; needed for schannel connections */
967 if ( !(*cli)->domain[0] ) {
968 result = cli_set_domain((*cli), domain->name);
969 if (!NT_STATUS_IS_OK(result)) {
974 result = NT_STATUS_OK;
978 SAFE_FREE(machine_account);
979 SAFE_FREE(machine_password);
980 SAFE_FREE(machine_krb5_principal);
981 SAFE_FREE(ipc_username);
982 SAFE_FREE(ipc_domain);
983 SAFE_FREE(ipc_password);
985 if (!NT_STATUS_IS_OK(result)) {
986 winbind_add_failed_connection_entry(domain, controller, result);
987 if ((*cli) != NULL) {
996 /*******************************************************************
997 Add a dcname and sockaddr_storage pair to the end of a dc_name_ip
1000 Keeps the list unique by not adding duplicate entries.
1002 @param[in] mem_ctx talloc memory context to allocate from
1003 @param[in] domain_name domain of the DC
1004 @param[in] dcname name of the DC to add to the list
1005 @param[in] pss Internet address and port pair to add to the list
1006 @param[in,out] dcs array of dc_name_ip structures to add to
1007 @param[in,out] num_dcs number of dcs returned in the dcs array
1008 @return true if the list was added to, false otherwise
1009 *******************************************************************/
1011 static bool add_one_dc_unique(TALLOC_CTX *mem_ctx, const char *domain_name,
1012 const char *dcname, struct sockaddr_storage *pss,
1013 struct dc_name_ip **dcs, int *num)
1017 if (!NT_STATUS_IS_OK(check_negative_conn_cache(domain_name, dcname))) {
1018 DEBUG(10, ("DC %s was in the negative conn cache\n", dcname));
1022 /* Make sure there's no duplicates in the list */
1023 for (i=0; i<*num; i++)
1024 if (sockaddr_equal((struct sockaddr *)&(*dcs)[i].ss, (struct sockaddr *)pss))
1027 *dcs = TALLOC_REALLOC_ARRAY(mem_ctx, *dcs, struct dc_name_ip, (*num)+1);
1032 fstrcpy((*dcs)[*num].name, dcname);
1033 (*dcs)[*num].ss = *pss;
1038 static bool add_sockaddr_to_array(TALLOC_CTX *mem_ctx,
1039 struct sockaddr_storage *pss, uint16 port,
1040 struct sockaddr_storage **addrs, int *num)
1042 *addrs = TALLOC_REALLOC_ARRAY(mem_ctx, *addrs, struct sockaddr_storage, (*num)+1);
1044 if (*addrs == NULL) {
1049 (*addrs)[*num] = *pss;
1050 set_sockaddr_port((struct sockaddr *)&(*addrs)[*num], port);
1056 /*******************************************************************
1057 convert an ip to a name
1058 *******************************************************************/
1060 static bool dcip_to_name(TALLOC_CTX *mem_ctx,
1061 const struct winbindd_domain *domain,
1062 struct sockaddr_storage *pss,
1065 struct ip_service ip_list;
1066 uint32_t nt_version = NETLOGON_NT_VERSION_1;
1072 /* For active directory servers, try to get the ldap server name.
1073 None of these failures should be considered critical for now */
1075 if (lp_security() == SEC_ADS) {
1077 ADS_STATUS ads_status;
1078 char addr[INET6_ADDRSTRLEN];
1080 print_sockaddr(addr, sizeof(addr), pss);
1082 ads = ads_init(domain->alt_name, domain->name, addr);
1083 ads->auth.flags |= ADS_AUTH_NO_BIND;
1085 ads_status = ads_connect(ads);
1086 if (ADS_ERR_OK(ads_status)) {
1087 /* We got a cldap packet. */
1088 fstrcpy(name, ads->config.ldap_server_name);
1089 namecache_store(name, 0x20, 1, &ip_list);
1091 DEBUG(10,("dcip_to_name: flags = 0x%x\n", (unsigned int)ads->config.flags));
1093 if (domain->primary && (ads->config.flags & NBT_SERVER_KDC)) {
1094 if (ads_closest_dc(ads)) {
1095 char *sitename = sitename_fetch(ads->config.realm);
1097 /* We're going to use this KDC for this realm/domain.
1098 If we are using sites, then force the krb5 libs
1101 create_local_private_krb5_conf_for_domain(domain->alt_name,
1106 SAFE_FREE(sitename);
1108 /* use an off site KDC */
1109 create_local_private_krb5_conf_for_domain(domain->alt_name,
1114 winbindd_set_locator_kdc_envs(domain);
1116 /* Ensure we contact this DC also. */
1117 saf_store( domain->name, name);
1118 saf_store( domain->alt_name, name);
1121 ads_destroy( &ads );
1125 ads_destroy( &ads );
1129 /* try GETDC requests next */
1131 if (send_getdc_request(mem_ctx, winbind_messaging_context(),
1132 pss, domain->name, &domain->sid,
1134 const char *dc_name = NULL;
1137 for (i=0; i<5; i++) {
1138 if (receive_getdc_response(mem_ctx, pss, domain->name,
1141 fstrcpy(name, dc_name);
1142 namecache_store(name, 0x20, 1, &ip_list);
1149 /* try node status request */
1151 if ( name_status_find(domain->name, 0x1c, 0x20, pss, name) ) {
1152 namecache_store(name, 0x20, 1, &ip_list);
1158 /*******************************************************************
1159 Retrieve a list of IP addresses for domain controllers.
1161 The array is sorted in the preferred connection order.
1163 @param[in] mem_ctx talloc memory context to allocate from
1164 @param[in] domain domain to retrieve DCs for
1165 @param[out] dcs array of dcs that will be returned
1166 @param[out] num_dcs number of dcs returned in the dcs array
1168 *******************************************************************/
1170 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
1171 struct dc_name_ip **dcs, int *num_dcs)
1174 struct sockaddr_storage ss;
1175 struct ip_service *ip_list = NULL;
1176 int iplist_size = 0;
1179 enum security_types sec = (enum security_types)lp_security();
1181 is_our_domain = strequal(domain->name, lp_workgroup());
1183 /* If not our domain, get the preferred DC, by asking our primary DC */
1185 && get_dc_name_via_netlogon(domain, dcname, &ss)
1186 && add_one_dc_unique(mem_ctx, domain->name, dcname, &ss, dcs,
1189 char addr[INET6_ADDRSTRLEN];
1190 print_sockaddr(addr, sizeof(addr), &ss);
1191 DEBUG(10, ("Retrieved DC %s at %s via netlogon\n",
1196 if (sec == SEC_ADS) {
1197 char *sitename = NULL;
1199 /* We need to make sure we know the local site before
1200 doing any DNS queries, as this will restrict the
1201 get_sorted_dc_list() call below to only fetching
1202 DNS records for the correct site. */
1204 /* Find any DC to get the site record.
1205 We deliberately don't care about the
1208 get_dc_name(domain->name, domain->alt_name, dcname, &ss);
1210 sitename = sitename_fetch(domain->alt_name);
1213 /* Do the site-specific AD dns lookup first. */
1214 get_sorted_dc_list(domain->alt_name, sitename, &ip_list,
1215 &iplist_size, True);
1217 /* Add ips to the DC array. We don't look up the name
1218 of the DC in this function, but we fill in the char*
1219 of the ip now to make the failed connection cache
1221 for ( i=0; i<iplist_size; i++ ) {
1222 char addr[INET6_ADDRSTRLEN];
1223 print_sockaddr(addr, sizeof(addr),
1225 add_one_dc_unique(mem_ctx,
1234 SAFE_FREE(sitename);
1238 /* Now we add DCs from the main AD DNS lookup. */
1239 get_sorted_dc_list(domain->alt_name, NULL, &ip_list,
1240 &iplist_size, True);
1242 for ( i=0; i<iplist_size; i++ ) {
1243 char addr[INET6_ADDRSTRLEN];
1244 print_sockaddr(addr, sizeof(addr),
1246 add_one_dc_unique(mem_ctx,
1258 /* Try standard netbios queries if no ADS */
1259 if (*num_dcs == 0) {
1260 get_sorted_dc_list(domain->name, NULL, &ip_list, &iplist_size,
1263 for ( i=0; i<iplist_size; i++ ) {
1264 char addr[INET6_ADDRSTRLEN];
1265 print_sockaddr(addr, sizeof(addr),
1267 add_one_dc_unique(mem_ctx,
1282 /*******************************************************************
1283 Find and make a connection to a DC in the given domain.
1285 @param[in] mem_ctx talloc memory context to allocate from
1286 @param[in] domain domain to find a dc in
1287 @param[out] dcname NetBIOS or FQDN of DC that's connected to
1288 @param[out] pss DC Internet address and port
1289 @param[out] fd fd of the open socket connected to the newly found dc
1290 @return true when a DC connection is made, false otherwise
1291 *******************************************************************/
1293 static bool find_new_dc(TALLOC_CTX *mem_ctx,
1294 struct winbindd_domain *domain,
1295 fstring dcname, struct sockaddr_storage *pss, int *fd)
1297 struct dc_name_ip *dcs = NULL;
1300 const char **dcnames = NULL;
1301 int num_dcnames = 0;
1303 struct sockaddr_storage *addrs = NULL;
1314 if (!get_dcs(mem_ctx, domain, &dcs, &num_dcs) || (num_dcs == 0))
1317 for (i=0; i<num_dcs; i++) {
1319 if (!add_string_to_array(mem_ctx, dcs[i].name,
1320 &dcnames, &num_dcnames)) {
1323 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, 445,
1324 &addrs, &num_addrs)) {
1329 if ((num_dcnames == 0) || (num_dcnames != num_addrs))
1332 if ((addrs == NULL) || (dcnames == NULL))
1335 status = smbsock_any_connect(addrs, dcnames, num_addrs,
1336 fd, &fd_index, NULL);
1337 if (!NT_STATUS_IS_OK(status)) {
1338 for (i=0; i<num_dcs; i++) {
1339 char ab[INET6_ADDRSTRLEN];
1340 print_sockaddr(ab, sizeof(ab), &dcs[i].ss);
1341 DEBUG(10, ("find_new_dc: smbsock_any_connect failed for "
1342 "domain %s address %s. Error was %s\n",
1343 domain->name, ab, nt_errstr(status) ));
1344 winbind_add_failed_connection_entry(domain,
1345 dcs[i].name, NT_STATUS_UNSUCCESSFUL);
1350 *pss = addrs[fd_index];
1352 if (*dcnames[fd_index] != '\0' && !is_ipaddress(dcnames[fd_index])) {
1353 /* Ok, we've got a name for the DC */
1354 fstrcpy(dcname, dcnames[fd_index]);
1358 /* Try to figure out the name */
1359 if (dcip_to_name(mem_ctx, domain, pss, dcname)) {
1363 /* We can not continue without the DC's name */
1364 winbind_add_failed_connection_entry(domain, dcs[fd_index].name,
1365 NT_STATUS_UNSUCCESSFUL);
1367 /* Throw away all arrays as we're doing this again. */
1371 TALLOC_FREE(dcnames);
1383 static char *current_dc_key(TALLOC_CTX *mem_ctx, const char *domain_name)
1385 return talloc_asprintf_strupper_m(mem_ctx, "CURRENT_DCNAME/%s",
1389 static void store_current_dc_in_gencache(const char *domain_name,
1390 const char *dc_name,
1391 struct cli_state *cli)
1393 char addr[INET6_ADDRSTRLEN];
1399 if (cli->fd == -1) {
1402 get_peer_addr(cli->fd, addr, sizeof(addr));
1404 key = current_dc_key(talloc_tos(), domain_name);
1409 value = talloc_asprintf(talloc_tos(), "%s %s", addr, dc_name);
1410 if (value == NULL) {
1414 gencache_set(key, value, 0x7ffffffff);
1420 bool fetch_current_dc_from_gencache(TALLOC_CTX *mem_ctx,
1421 const char *domain_name,
1422 char **p_dc_name, char **p_dc_ip)
1424 char *key, *value, *p;
1426 char *dc_name = NULL;
1429 key = current_dc_key(talloc_tos(), domain_name);
1433 if (!gencache_get(key, &value, NULL)) {
1436 p = strchr(value, ' ');
1440 dc_ip = talloc_strndup(mem_ctx, value, p - value);
1441 if (dc_ip == NULL) {
1444 dc_name = talloc_strdup(mem_ctx, p+1);
1445 if (dc_name == NULL) {
1449 if (p_dc_ip != NULL) {
1453 if (p_dc_name != NULL) {
1454 *p_dc_name = dc_name;
1459 TALLOC_FREE(dc_name);
1465 static NTSTATUS cm_open_connection(struct winbindd_domain *domain,
1466 struct winbindd_cm_conn *new_conn)
1468 TALLOC_CTX *mem_ctx;
1470 char *saf_servername = saf_fetch( domain->name );
1473 if ((mem_ctx = talloc_init("cm_open_connection")) == NULL) {
1474 SAFE_FREE(saf_servername);
1475 set_domain_offline(domain);
1476 return NT_STATUS_NO_MEMORY;
1479 /* we have to check the server affinity cache here since
1480 later we selecte a DC based on response time and not preference */
1482 /* Check the negative connection cache
1483 before talking to it. It going down may have
1484 triggered the reconnection. */
1486 if ( saf_servername && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, saf_servername))) {
1488 DEBUG(10,("cm_open_connection: saf_servername is '%s' for domain %s\n",
1489 saf_servername, domain->name ));
1491 /* convert an ip address to a name */
1492 if (is_ipaddress( saf_servername ) ) {
1494 struct sockaddr_storage ss;
1496 if (!interpret_string_addr(&ss, saf_servername,
1498 return NT_STATUS_UNSUCCESSFUL;
1500 if (dcip_to_name(mem_ctx, domain, &ss, saf_name )) {
1501 fstrcpy( domain->dcname, saf_name );
1503 winbind_add_failed_connection_entry(
1504 domain, saf_servername,
1505 NT_STATUS_UNSUCCESSFUL);
1508 fstrcpy( domain->dcname, saf_servername );
1511 SAFE_FREE( saf_servername );
1514 for (retries = 0; retries < 3; retries++) {
1518 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1520 DEBUG(10,("cm_open_connection: dcname is '%s' for domain %s\n",
1521 domain->dcname, domain->name ));
1524 && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, domain->dcname))
1525 && (resolve_name(domain->dcname, &domain->dcaddr, 0x20)))
1529 status = smbsock_connect(&domain->dcaddr, NULL, NULL,
1531 if (!NT_STATUS_IS_OK(status)) {
1537 && !find_new_dc(mem_ctx, domain, domain->dcname, &domain->dcaddr, &fd))
1539 /* This is the one place where we will
1540 set the global winbindd offline state
1541 to true, if a "WINBINDD_OFFLINE" entry
1542 is found in the winbindd cache. */
1543 set_global_winbindd_state_offline();
1547 new_conn->cli = NULL;
1549 result = cm_prepare_connection(domain, fd, domain->dcname,
1550 &new_conn->cli, &retry);
1556 if (NT_STATUS_IS_OK(result)) {
1558 winbindd_set_locator_kdc_envs(domain);
1560 if (domain->online == False) {
1561 /* We're changing state from offline to online. */
1562 set_global_winbindd_state_online();
1564 set_domain_online(domain);
1567 * Much as I hate global state, this seems to be the point
1568 * where we can be certain that we have a proper connection to
1569 * a DC. wbinfo --dc-info needs that information, store it in
1570 * gencache with a looong timeout. This will need revisiting
1571 * once we start to connect to multiple DCs, wbcDcInfo is
1572 * already prepared for that.
1574 store_current_dc_in_gencache(domain->name, domain->dcname,
1577 /* Ensure we setup the retry handler. */
1578 set_domain_offline(domain);
1581 talloc_destroy(mem_ctx);
1585 /* Close down all open pipes on a connection. */
1587 void invalidate_cm_connection(struct winbindd_cm_conn *conn)
1589 /* We're closing down a possibly dead
1590 connection. Don't have impossibly long (10s) timeouts. */
1593 cli_set_timeout(conn->cli, 1000); /* 1 second. */
1596 if (conn->samr_pipe != NULL) {
1597 TALLOC_FREE(conn->samr_pipe);
1598 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1600 cli_set_timeout(conn->cli, 500);
1604 if (conn->lsa_pipe != NULL) {
1605 TALLOC_FREE(conn->lsa_pipe);
1606 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1608 cli_set_timeout(conn->cli, 500);
1612 if (conn->lsa_pipe_tcp != NULL) {
1613 TALLOC_FREE(conn->lsa_pipe_tcp);
1614 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1616 cli_set_timeout(conn->cli, 500);
1620 if (conn->netlogon_pipe != NULL) {
1621 TALLOC_FREE(conn->netlogon_pipe);
1622 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1624 cli_set_timeout(conn->cli, 500);
1629 cli_shutdown(conn->cli);
1635 void close_conns_after_fork(void)
1637 struct winbindd_domain *domain;
1639 for (domain = domain_list(); domain; domain = domain->next) {
1640 if (domain->conn.cli == NULL)
1643 if (domain->conn.cli->fd == -1)
1646 close(domain->conn.cli->fd);
1647 domain->conn.cli->fd = -1;
1651 static bool connection_ok(struct winbindd_domain *domain)
1655 ok = cli_state_is_connected(domain->conn.cli);
1657 DEBUG(3, ("connection_ok: Connection to %s for domain %s is not connected\n",
1658 domain->dcname, domain->name));
1662 if (domain->online == False) {
1663 DEBUG(3, ("connection_ok: Domain %s is offline\n", domain->name));
1670 /* Initialize a new connection up to the RPC BIND.
1671 Bypass online status check so always does network calls. */
1673 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain)
1677 /* Internal connections never use the network. */
1678 if (domain->internal) {
1679 domain->initialized = True;
1680 return NT_STATUS_OK;
1683 if (!winbindd_can_contact_domain(domain)) {
1684 invalidate_cm_connection(&domain->conn);
1685 domain->initialized = True;
1686 return NT_STATUS_OK;
1689 if (connection_ok(domain)) {
1690 if (!domain->initialized) {
1691 set_dc_type_and_flags(domain);
1693 return NT_STATUS_OK;
1696 invalidate_cm_connection(&domain->conn);
1698 result = cm_open_connection(domain, &domain->conn);
1700 if (NT_STATUS_IS_OK(result) && !domain->initialized) {
1701 set_dc_type_and_flags(domain);
1707 NTSTATUS init_dc_connection(struct winbindd_domain *domain)
1709 if (domain->initialized && !domain->online) {
1710 /* We check for online status elsewhere. */
1711 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1714 return init_dc_connection_network(domain);
1717 static NTSTATUS init_dc_connection_rpc(struct winbindd_domain *domain)
1721 status = init_dc_connection(domain);
1722 if (!NT_STATUS_IS_OK(status)) {
1726 if (!domain->internal && domain->conn.cli == NULL) {
1727 /* happens for trusted domains without inbound trust */
1728 return NT_STATUS_TRUSTED_DOMAIN_FAILURE;
1731 return NT_STATUS_OK;
1734 /******************************************************************************
1735 Set the trust flags (direction and forest location) for a domain
1736 ******************************************************************************/
1738 static bool set_dc_type_and_flags_trustinfo( struct winbindd_domain *domain )
1740 struct winbindd_domain *our_domain;
1741 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1742 struct netr_DomainTrustList trusts;
1744 uint32 flags = (NETR_TRUST_FLAG_IN_FOREST |
1745 NETR_TRUST_FLAG_OUTBOUND |
1746 NETR_TRUST_FLAG_INBOUND);
1747 struct rpc_pipe_client *cli;
1748 TALLOC_CTX *mem_ctx = NULL;
1750 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s\n", domain->name ));
1752 /* Our primary domain doesn't need to worry about trust flags.
1753 Force it to go through the network setup */
1754 if ( domain->primary ) {
1758 our_domain = find_our_domain();
1760 if ( !connection_ok(our_domain) ) {
1761 DEBUG(3,("set_dc_type_and_flags_trustinfo: No connection to our domain!\n"));
1765 /* This won't work unless our domain is AD */
1767 if ( !our_domain->active_directory ) {
1771 /* Use DsEnumerateDomainTrusts to get us the trust direction
1774 result = cm_connect_netlogon(our_domain, &cli);
1776 if (!NT_STATUS_IS_OK(result)) {
1777 DEBUG(5, ("set_dc_type_and_flags_trustinfo: Could not open "
1778 "a connection to %s for PIPE_NETLOGON (%s)\n",
1779 domain->name, nt_errstr(result)));
1783 if ( (mem_ctx = talloc_init("set_dc_type_and_flags_trustinfo")) == NULL ) {
1784 DEBUG(0,("set_dc_type_and_flags_trustinfo: talloc_init() failed!\n"));
1788 result = rpccli_netr_DsrEnumerateDomainTrusts(cli, mem_ctx,
1793 if (!NT_STATUS_IS_OK(result)) {
1794 DEBUG(0,("set_dc_type_and_flags_trustinfo: "
1795 "failed to query trusted domain list: %s\n",
1796 nt_errstr(result)));
1797 talloc_destroy(mem_ctx);
1801 /* Now find the domain name and get the flags */
1803 for ( i=0; i<trusts.count; i++ ) {
1804 if ( strequal( domain->name, trusts.array[i].netbios_name) ) {
1805 domain->domain_flags = trusts.array[i].trust_flags;
1806 domain->domain_type = trusts.array[i].trust_type;
1807 domain->domain_trust_attribs = trusts.array[i].trust_attributes;
1809 if ( domain->domain_type == NETR_TRUST_TYPE_UPLEVEL )
1810 domain->active_directory = True;
1812 /* This flag is only set if the domain is *our*
1813 primary domain and the primary domain is in
1816 domain->native_mode = (domain->domain_flags & NETR_TRUST_FLAG_NATIVE);
1818 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s is %sin "
1819 "native mode.\n", domain->name,
1820 domain->native_mode ? "" : "NOT "));
1822 DEBUG(5,("set_dc_type_and_flags_trustinfo: domain %s is %s"
1823 "running active directory.\n", domain->name,
1824 domain->active_directory ? "" : "NOT "));
1827 domain->initialized = True;
1833 talloc_destroy( mem_ctx );
1835 return domain->initialized;
1838 /******************************************************************************
1839 We can 'sense' certain things about the DC by it's replies to certain
1842 This tells us if this particular remote server is Active Directory, and if it
1844 ******************************************************************************/
1846 static void set_dc_type_and_flags_connect( struct winbindd_domain *domain )
1850 TALLOC_CTX *mem_ctx = NULL;
1851 struct rpc_pipe_client *cli = NULL;
1852 struct policy_handle pol;
1853 union dssetup_DsRoleInfo info;
1854 union lsa_PolicyInformation *lsa_info = NULL;
1856 if (!connection_ok(domain)) {
1860 mem_ctx = talloc_init("set_dc_type_and_flags on domain %s\n",
1863 DEBUG(1, ("set_dc_type_and_flags_connect: talloc_init() failed\n"));
1867 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s\n", domain->name ));
1869 result = cli_rpc_pipe_open_noauth(domain->conn.cli,
1870 &ndr_table_dssetup.syntax_id,
1873 if (!NT_STATUS_IS_OK(result)) {
1874 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1875 "PI_DSSETUP on domain %s: (%s)\n",
1876 domain->name, nt_errstr(result)));
1878 /* if this is just a non-AD domain we need to continue
1879 * identifying so that we can in the end return with
1880 * domain->initialized = True - gd */
1885 result = rpccli_dssetup_DsRoleGetPrimaryDomainInformation(cli, mem_ctx,
1886 DS_ROLE_BASIC_INFORMATION,
1891 if (!NT_STATUS_IS_OK(result)) {
1892 DEBUG(5, ("set_dc_type_and_flags_connect: rpccli_ds_getprimarydominfo "
1893 "on domain %s failed: (%s)\n",
1894 domain->name, nt_errstr(result)));
1896 /* older samba3 DCs will return DCERPC_FAULT_OP_RNG_ERROR for
1897 * every opcode on the DSSETUP pipe, continue with
1898 * no_dssetup mode here as well to get domain->initialized
1901 if (NT_STATUS_V(result) == DCERPC_FAULT_OP_RNG_ERROR) {
1905 TALLOC_FREE(mem_ctx);
1909 if ((info.basic.flags & DS_ROLE_PRIMARY_DS_RUNNING) &&
1910 !(info.basic.flags & DS_ROLE_PRIMARY_DS_MIXED_MODE)) {
1911 domain->native_mode = True;
1913 domain->native_mode = False;
1917 result = cli_rpc_pipe_open_noauth(domain->conn.cli,
1918 &ndr_table_lsarpc.syntax_id, &cli);
1920 if (!NT_STATUS_IS_OK(result)) {
1921 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1922 "PI_LSARPC on domain %s: (%s)\n",
1923 domain->name, nt_errstr(result)));
1925 TALLOC_FREE(mem_ctx);
1929 result = rpccli_lsa_open_policy2(cli, mem_ctx, True,
1930 SEC_FLAG_MAXIMUM_ALLOWED, &pol);
1932 if (NT_STATUS_IS_OK(result)) {
1933 /* This particular query is exactly what Win2k clients use
1934 to determine that the DC is active directory */
1935 result = rpccli_lsa_QueryInfoPolicy2(cli, mem_ctx,
1937 LSA_POLICY_INFO_DNS,
1941 if (NT_STATUS_IS_OK(result)) {
1942 domain->active_directory = True;
1944 if (lsa_info->dns.name.string) {
1945 fstrcpy(domain->name, lsa_info->dns.name.string);
1948 if (lsa_info->dns.dns_domain.string) {
1949 fstrcpy(domain->alt_name,
1950 lsa_info->dns.dns_domain.string);
1953 /* See if we can set some domain trust flags about
1956 if (lsa_info->dns.dns_forest.string) {
1957 fstrcpy(domain->forest_name,
1958 lsa_info->dns.dns_forest.string);
1960 if (strequal(domain->forest_name, domain->alt_name)) {
1961 domain->domain_flags |= NETR_TRUST_FLAG_TREEROOT;
1965 if (lsa_info->dns.sid) {
1966 sid_copy(&domain->sid, lsa_info->dns.sid);
1969 domain->active_directory = False;
1971 result = rpccli_lsa_open_policy(cli, mem_ctx, True,
1972 SEC_FLAG_MAXIMUM_ALLOWED,
1975 if (!NT_STATUS_IS_OK(result)) {
1979 result = rpccli_lsa_QueryInfoPolicy(cli, mem_ctx,
1981 LSA_POLICY_INFO_ACCOUNT_DOMAIN,
1984 if (NT_STATUS_IS_OK(result)) {
1986 if (lsa_info->account_domain.name.string) {
1987 fstrcpy(domain->name,
1988 lsa_info->account_domain.name.string);
1991 if (lsa_info->account_domain.sid) {
1992 sid_copy(&domain->sid, lsa_info->account_domain.sid);
1998 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s is %sin native mode.\n",
1999 domain->name, domain->native_mode ? "" : "NOT "));
2001 DEBUG(5,("set_dc_type_and_flags_connect: domain %s is %srunning active directory.\n",
2002 domain->name, domain->active_directory ? "" : "NOT "));
2004 domain->can_do_ncacn_ip_tcp = domain->active_directory;
2008 TALLOC_FREE(mem_ctx);
2010 domain->initialized = True;
2013 /**********************************************************************
2014 Set the domain_flags (trust attributes, domain operating modes, etc...
2015 ***********************************************************************/
2017 static void set_dc_type_and_flags( struct winbindd_domain *domain )
2019 /* we always have to contact our primary domain */
2021 if ( domain->primary ) {
2022 DEBUG(10,("set_dc_type_and_flags: setting up flags for "
2023 "primary domain\n"));
2024 set_dc_type_and_flags_connect( domain );
2028 /* Use our DC to get the information if possible */
2030 if ( !set_dc_type_and_flags_trustinfo( domain ) ) {
2031 /* Otherwise, fallback to contacting the
2033 set_dc_type_and_flags_connect( domain );
2041 /**********************************************************************
2042 ***********************************************************************/
2044 static bool cm_get_schannel_dcinfo(struct winbindd_domain *domain,
2045 struct dcinfo **ppdc)
2048 struct rpc_pipe_client *netlogon_pipe;
2050 if (lp_client_schannel() == False) {
2054 result = cm_connect_netlogon(domain, &netlogon_pipe);
2055 if (!NT_STATUS_IS_OK(result)) {
2059 /* Return a pointer to the struct dcinfo from the
2062 if (!domain->conn.netlogon_pipe->dc) {
2066 *ppdc = domain->conn.netlogon_pipe->dc;
2070 NTSTATUS cm_connect_sam(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2071 struct rpc_pipe_client **cli, struct policy_handle *sam_handle)
2073 struct winbindd_cm_conn *conn;
2074 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2075 struct dcinfo *p_dcinfo;
2076 char *machine_password = NULL;
2077 char *machine_account = NULL;
2078 char *domain_name = NULL;
2080 result = init_dc_connection_rpc(domain);
2081 if (!NT_STATUS_IS_OK(result)) {
2085 conn = &domain->conn;
2087 if (rpccli_is_connected(conn->samr_pipe)) {
2091 TALLOC_FREE(conn->samr_pipe);
2094 * No SAMR pipe yet. Attempt to get an NTLMSSP SPNEGO authenticated
2095 * sign and sealed pipe using the machine account password by
2096 * preference. If we can't - try schannel, if that fails, try
2100 if ((conn->cli->user_name[0] == '\0') ||
2101 (conn->cli->domain[0] == '\0') ||
2102 (conn->cli->password == NULL || conn->cli->password[0] == '\0'))
2104 result = get_trust_creds(domain, &machine_password,
2105 &machine_account, NULL);
2106 if (!NT_STATUS_IS_OK(result)) {
2107 DEBUG(10, ("cm_connect_sam: No no user available for "
2108 "domain %s, trying schannel\n", conn->cli->domain));
2111 domain_name = domain->name;
2113 machine_password = SMB_STRDUP(conn->cli->password);
2114 machine_account = SMB_STRDUP(conn->cli->user_name);
2115 domain_name = conn->cli->domain;
2118 if (!machine_password || !machine_account) {
2119 result = NT_STATUS_NO_MEMORY;
2123 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2124 authenticated SAMR pipe with sign & seal. */
2125 result = cli_rpc_pipe_open_spnego_ntlmssp(conn->cli,
2126 &ndr_table_samr.syntax_id,
2128 PIPE_AUTH_LEVEL_PRIVACY,
2134 if (!NT_STATUS_IS_OK(result)) {
2135 DEBUG(10,("cm_connect_sam: failed to connect to SAMR "
2136 "pipe for domain %s using NTLMSSP "
2137 "authenticated pipe: user %s\\%s. Error was "
2138 "%s\n", domain->name, domain_name,
2139 machine_account, nt_errstr(result)));
2143 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for "
2144 "domain %s using NTLMSSP authenticated "
2145 "pipe: user %s\\%s\n", domain->name,
2146 domain_name, machine_account));
2148 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2149 conn->samr_pipe->desthost,
2150 SEC_FLAG_MAXIMUM_ALLOWED,
2151 &conn->sam_connect_handle);
2152 if (NT_STATUS_IS_OK(result)) {
2155 DEBUG(10,("cm_connect_sam: ntlmssp-sealed rpccli_samr_Connect2 "
2156 "failed for domain %s, error was %s. Trying schannel\n",
2157 domain->name, nt_errstr(result) ));
2158 TALLOC_FREE(conn->samr_pipe);
2162 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2164 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
2165 /* If this call fails - conn->cli can now be NULL ! */
2166 DEBUG(10, ("cm_connect_sam: Could not get schannel auth info "
2167 "for domain %s, trying anon\n", domain->name));
2170 result = cli_rpc_pipe_open_schannel_with_key
2171 (conn->cli, &ndr_table_samr.syntax_id, NCACN_NP,
2172 PIPE_AUTH_LEVEL_PRIVACY,
2173 domain->name, p_dcinfo, &conn->samr_pipe);
2175 if (!NT_STATUS_IS_OK(result)) {
2176 DEBUG(10,("cm_connect_sam: failed to connect to SAMR pipe for "
2177 "domain %s using schannel. Error was %s\n",
2178 domain->name, nt_errstr(result) ));
2181 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for domain %s using "
2182 "schannel.\n", domain->name ));
2184 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2185 conn->samr_pipe->desthost,
2186 SEC_FLAG_MAXIMUM_ALLOWED,
2187 &conn->sam_connect_handle);
2188 if (NT_STATUS_IS_OK(result)) {
2191 DEBUG(10,("cm_connect_sam: schannel-sealed rpccli_samr_Connect2 failed "
2192 "for domain %s, error was %s. Trying anonymous\n",
2193 domain->name, nt_errstr(result) ));
2194 TALLOC_FREE(conn->samr_pipe);
2198 /* Finally fall back to anonymous. */
2199 result = cli_rpc_pipe_open_noauth(conn->cli, &ndr_table_samr.syntax_id,
2202 if (!NT_STATUS_IS_OK(result)) {
2206 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2207 conn->samr_pipe->desthost,
2208 SEC_FLAG_MAXIMUM_ALLOWED,
2209 &conn->sam_connect_handle);
2210 if (!NT_STATUS_IS_OK(result)) {
2211 DEBUG(10,("cm_connect_sam: rpccli_samr_Connect2 failed "
2212 "for domain %s Error was %s\n",
2213 domain->name, nt_errstr(result) ));
2218 result = rpccli_samr_OpenDomain(conn->samr_pipe,
2220 &conn->sam_connect_handle,
2221 SEC_FLAG_MAXIMUM_ALLOWED,
2223 &conn->sam_domain_handle);
2227 if (NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED)) {
2229 * if we got access denied, we might just have no access rights
2230 * to talk to the remote samr server server (e.g. when we are a
2231 * PDC and we are connecting a w2k8 pdc via an interdomain
2232 * trust). In that case do not invalidate the whole connection
2235 TALLOC_FREE(conn->samr_pipe);
2236 ZERO_STRUCT(conn->sam_domain_handle);
2238 } else if (!NT_STATUS_IS_OK(result)) {
2239 invalidate_cm_connection(conn);
2243 *cli = conn->samr_pipe;
2244 *sam_handle = conn->sam_domain_handle;
2245 SAFE_FREE(machine_password);
2246 SAFE_FREE(machine_account);
2250 /**********************************************************************
2251 open an schanneld ncacn_ip_tcp connection to LSA
2252 ***********************************************************************/
2254 NTSTATUS cm_connect_lsa_tcp(struct winbindd_domain *domain,
2255 TALLOC_CTX *mem_ctx,
2256 struct rpc_pipe_client **cli)
2258 struct winbindd_cm_conn *conn;
2261 DEBUG(10,("cm_connect_lsa_tcp\n"));
2263 status = init_dc_connection_rpc(domain);
2264 if (!NT_STATUS_IS_OK(status)) {
2268 conn = &domain->conn;
2270 if (conn->lsa_pipe_tcp &&
2271 conn->lsa_pipe_tcp->transport->transport == NCACN_IP_TCP &&
2272 conn->lsa_pipe_tcp->auth->auth_level == PIPE_AUTH_LEVEL_PRIVACY &&
2273 rpccli_is_connected(conn->lsa_pipe_tcp)) {
2277 TALLOC_FREE(conn->lsa_pipe_tcp);
2279 status = cli_rpc_pipe_open_schannel(conn->cli,
2280 &ndr_table_lsarpc.syntax_id,
2282 PIPE_AUTH_LEVEL_PRIVACY,
2284 &conn->lsa_pipe_tcp);
2285 if (!NT_STATUS_IS_OK(status)) {
2286 DEBUG(10,("cli_rpc_pipe_open_schannel failed: %s\n",
2287 nt_errstr(status)));
2292 if (!NT_STATUS_IS_OK(status)) {
2293 TALLOC_FREE(conn->lsa_pipe_tcp);
2297 *cli = conn->lsa_pipe_tcp;
2302 NTSTATUS cm_connect_lsa(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2303 struct rpc_pipe_client **cli, struct policy_handle *lsa_policy)
2305 struct winbindd_cm_conn *conn;
2306 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2307 struct dcinfo *p_dcinfo;
2309 result = init_dc_connection_rpc(domain);
2310 if (!NT_STATUS_IS_OK(result))
2313 conn = &domain->conn;
2315 if (rpccli_is_connected(conn->lsa_pipe)) {
2319 TALLOC_FREE(conn->lsa_pipe);
2321 if ((conn->cli->user_name[0] == '\0') ||
2322 (conn->cli->domain[0] == '\0') ||
2323 (conn->cli->password == NULL || conn->cli->password[0] == '\0')) {
2324 DEBUG(10, ("cm_connect_lsa: No no user available for "
2325 "domain %s, trying schannel\n", conn->cli->domain));
2329 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2330 * authenticated LSA pipe with sign & seal. */
2331 result = cli_rpc_pipe_open_spnego_ntlmssp
2332 (conn->cli, &ndr_table_lsarpc.syntax_id, NCACN_NP,
2333 PIPE_AUTH_LEVEL_PRIVACY,
2334 conn->cli->domain, conn->cli->user_name, conn->cli->password,
2337 if (!NT_STATUS_IS_OK(result)) {
2338 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2339 "domain %s using NTLMSSP authenticated pipe: user "
2340 "%s\\%s. Error was %s. Trying schannel.\n",
2341 domain->name, conn->cli->domain,
2342 conn->cli->user_name, nt_errstr(result)));
2346 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2347 "NTLMSSP authenticated pipe: user %s\\%s\n",
2348 domain->name, conn->cli->domain, conn->cli->user_name ));
2350 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2351 SEC_FLAG_MAXIMUM_ALLOWED,
2353 if (NT_STATUS_IS_OK(result)) {
2357 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2360 TALLOC_FREE(conn->lsa_pipe);
2364 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2366 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
2367 /* If this call fails - conn->cli can now be NULL ! */
2368 DEBUG(10, ("cm_connect_lsa: Could not get schannel auth info "
2369 "for domain %s, trying anon\n", domain->name));
2372 result = cli_rpc_pipe_open_schannel_with_key
2373 (conn->cli, &ndr_table_lsarpc.syntax_id, NCACN_NP,
2374 PIPE_AUTH_LEVEL_PRIVACY,
2375 domain->name, p_dcinfo, &conn->lsa_pipe);
2377 if (!NT_STATUS_IS_OK(result)) {
2378 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2379 "domain %s using schannel. Error was %s\n",
2380 domain->name, nt_errstr(result) ));
2383 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2384 "schannel.\n", domain->name ));
2386 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2387 SEC_FLAG_MAXIMUM_ALLOWED,
2389 if (NT_STATUS_IS_OK(result)) {
2393 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2396 TALLOC_FREE(conn->lsa_pipe);
2400 result = cli_rpc_pipe_open_noauth(conn->cli,
2401 &ndr_table_lsarpc.syntax_id,
2403 if (!NT_STATUS_IS_OK(result)) {
2404 result = NT_STATUS_PIPE_NOT_AVAILABLE;
2408 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2409 SEC_FLAG_MAXIMUM_ALLOWED,
2412 if (!NT_STATUS_IS_OK(result)) {
2413 invalidate_cm_connection(conn);
2417 *cli = conn->lsa_pipe;
2418 *lsa_policy = conn->lsa_policy;
2422 /****************************************************************************
2423 Open the netlogon pipe to this DC. Use schannel if specified in client conf.
2424 session key stored in conn->netlogon_pipe->dc->sess_key.
2425 ****************************************************************************/
2427 NTSTATUS cm_connect_netlogon(struct winbindd_domain *domain,
2428 struct rpc_pipe_client **cli)
2430 struct winbindd_cm_conn *conn;
2433 uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
2435 uint32 sec_chan_type;
2436 const char *account_name;
2437 struct rpc_pipe_client *netlogon_pipe = NULL;
2441 result = init_dc_connection_rpc(domain);
2442 if (!NT_STATUS_IS_OK(result)) {
2446 conn = &domain->conn;
2448 if (rpccli_is_connected(conn->netlogon_pipe)) {
2449 *cli = conn->netlogon_pipe;
2450 return NT_STATUS_OK;
2453 TALLOC_FREE(conn->netlogon_pipe);
2455 result = cli_rpc_pipe_open_noauth(conn->cli,
2456 &ndr_table_netlogon.syntax_id,
2458 if (!NT_STATUS_IS_OK(result)) {
2462 if ((!IS_DC) && (!domain->primary)) {
2463 /* Clear the schannel request bit and drop down */
2464 neg_flags &= ~NETLOGON_NEG_SCHANNEL;
2468 if (lp_client_schannel() != False) {
2469 neg_flags |= NETLOGON_NEG_SCHANNEL;
2472 if (!get_trust_pw_hash(domain->name, mach_pwd, &account_name,
2475 TALLOC_FREE(netlogon_pipe);
2476 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2479 result = rpccli_netlogon_setup_creds(
2481 domain->dcname, /* server name. */
2482 domain->name, /* domain name */
2483 global_myname(), /* client name */
2484 account_name, /* machine account */
2485 mach_pwd, /* machine password */
2486 sec_chan_type, /* from get_trust_pw */
2489 if (!NT_STATUS_IS_OK(result)) {
2490 TALLOC_FREE(netlogon_pipe);
2494 if ((lp_client_schannel() == True) &&
2495 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2496 DEBUG(3, ("Server did not offer schannel\n"));
2497 TALLOC_FREE(netlogon_pipe);
2498 return NT_STATUS_ACCESS_DENIED;
2502 if ((lp_client_schannel() == False) ||
2503 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2505 * NetSamLogonEx only works for schannel
2507 domain->can_do_samlogon_ex = False;
2509 /* We're done - just keep the existing connection to NETLOGON
2511 conn->netlogon_pipe = netlogon_pipe;
2512 *cli = conn->netlogon_pipe;
2513 return NT_STATUS_OK;
2516 /* Using the credentials from the first pipe, open a signed and sealed
2517 second netlogon pipe. The session key is stored in the schannel
2518 part of the new pipe auth struct.
2521 result = cli_rpc_pipe_open_schannel_with_key(
2522 conn->cli, &ndr_table_netlogon.syntax_id, NCACN_NP,
2523 PIPE_AUTH_LEVEL_PRIVACY, domain->name, netlogon_pipe->dc,
2524 &conn->netlogon_pipe);
2526 /* We can now close the initial netlogon pipe. */
2527 TALLOC_FREE(netlogon_pipe);
2529 if (!NT_STATUS_IS_OK(result)) {
2530 DEBUG(3, ("Could not open schannel'ed NETLOGON pipe. Error "
2531 "was %s\n", nt_errstr(result)));
2533 invalidate_cm_connection(conn);
2538 * Always try netr_LogonSamLogonEx. We will fall back for NT4
2539 * which gives DCERPC_FAULT_OP_RNG_ERROR (function not
2540 * supported). We used to only try SamLogonEx for AD, but
2541 * Samba DCs can also do it. And because we don't distinguish
2542 * between Samba and NT4, always try it once.
2544 domain->can_do_samlogon_ex = true;
2546 *cli = conn->netlogon_pipe;
2547 return NT_STATUS_OK;
2550 void winbind_msg_ip_dropped(struct messaging_context *msg_ctx,
2553 struct server_id server_id,
2556 struct winbindd_domain *domain;
2559 || (data->data == NULL)
2560 || (data->length == 0)
2561 || (data->data[data->length-1] != '\0')
2562 || !is_ipaddress((char *)data->data)) {
2563 DEBUG(1, ("invalid msg_ip_dropped message\n"));
2566 for (domain = domain_list(); domain != NULL; domain = domain->next) {
2567 char sockaddr[INET6_ADDRSTRLEN];
2568 if (domain->conn.cli == NULL) {
2571 if (domain->conn.cli->fd == -1) {
2574 client_socket_addr(domain->conn.cli->fd, sockaddr,
2576 if (strequal(sockaddr, (char *)data->data)) {
2577 close(domain->conn.cli->fd);
2578 domain->conn.cli->fd = -1;
2583 extern struct winbindd_child *children;
2585 void winbind_msg_ip_dropped_parent(struct messaging_context *msg_ctx,
2588 struct server_id server_id,
2591 struct winbindd_child *child;
2593 winbind_msg_ip_dropped(msg_ctx, private_data, msg_type,
2597 for (child = children; child != NULL; child = child->next) {
2598 messaging_send_buf(msg_ctx, pid_to_procid(child->pid),
2599 msg_type, data->data, data->length);