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 /* tdb needs special fork handling */
203 if (tdb_reopen_all(1) == -1) {
204 DEBUG(0,("tdb_reopen_all failed.\n"));
208 close_conns_after_fork();
210 if (!override_logfile) {
212 if (asprintf(&logfile, "%s/log.winbindd-dc-connect", get_dyn_LOGFILEBASE()) > 0) {
213 lp_set_logfile(logfile);
219 mem_ctx = talloc_init("fork_child_dc_connect");
221 DEBUG(0,("talloc_init failed.\n"));
225 if ((!get_dcs(mem_ctx, domain, &dcs, &num_dcs)) || (num_dcs == 0)) {
226 /* Still offline ? Can't find DC's. */
227 messaging_send_buf(winbind_messaging_context(),
228 pid_to_procid(parent_pid),
229 MSG_WINBIND_FAILED_TO_GO_ONLINE,
230 (uint8 *)domain->name,
231 strlen(domain->name)+1);
235 /* We got a DC. Send a message to our parent to get it to
236 try and do the same. */
238 messaging_send_buf(winbind_messaging_context(),
239 pid_to_procid(parent_pid),
240 MSG_WINBIND_TRY_TO_GO_ONLINE,
241 (uint8 *)domain->name,
242 strlen(domain->name)+1);
246 /****************************************************************
247 Handler triggered if we're offline to try and detect a DC.
248 ****************************************************************/
250 static void check_domain_online_handler(struct event_context *ctx,
251 struct timed_event *te,
252 const struct timeval *now,
255 struct winbindd_domain *domain =
256 (struct winbindd_domain *)private_data;
258 DEBUG(10,("check_domain_online_handler: called for domain "
259 "%s (online = %s)\n", domain->name,
260 domain->online ? "True" : "False" ));
262 TALLOC_FREE(domain->check_online_event);
264 /* Are we still in "startup" mode ? */
266 if (domain->startup && (now->tv_sec > domain->startup_time + 30)) {
267 /* No longer in "startup" mode. */
268 DEBUG(10,("check_domain_online_handler: domain %s no longer in 'startup' mode.\n",
270 domain->startup = False;
273 /* We've been told to stay offline, so stay
276 if (get_global_winbindd_state_offline()) {
277 DEBUG(10,("check_domain_online_handler: domain %s remaining globally offline\n",
282 /* Fork a child to test if it can contact a DC.
283 If it can then send ourselves a message to
284 cause a reconnect. */
286 fork_child_dc_connect(domain);
289 /****************************************************************
290 If we're still offline setup the timeout check.
291 ****************************************************************/
293 static void calc_new_online_timeout_check(struct winbindd_domain *domain)
295 int wbc = lp_winbind_cache_time();
297 if (domain->startup) {
298 domain->check_online_timeout = 10;
299 } else if (domain->check_online_timeout < wbc) {
300 domain->check_online_timeout = wbc;
304 /****************************************************************
305 Set domain offline and also add handler to put us back online
307 ****************************************************************/
309 void set_domain_offline(struct winbindd_domain *domain)
311 DEBUG(10,("set_domain_offline: called for domain %s\n",
314 TALLOC_FREE(domain->check_online_event);
316 if (domain->internal) {
317 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
322 domain->online = False;
324 /* Offline domains are always initialized. They're
325 re-initialized when they go back online. */
327 domain->initialized = True;
329 /* We only add the timeout handler that checks and
330 allows us to go back online when we've not
331 been told to remain offline. */
333 if (get_global_winbindd_state_offline()) {
334 DEBUG(10,("set_domain_offline: domain %s remaining globally offline\n",
339 /* If we're in statup mode, check again in 10 seconds, not in
340 lp_winbind_cache_time() seconds (which is 5 mins by default). */
342 calc_new_online_timeout_check(domain);
344 domain->check_online_event = event_add_timed(winbind_event_context(),
346 timeval_current_ofs(domain->check_online_timeout,0),
347 "check_domain_online_handler",
348 check_domain_online_handler,
351 /* The above *has* to succeed for winbindd to work. */
352 if (!domain->check_online_event) {
353 smb_panic("set_domain_offline: failed to add online handler");
356 DEBUG(10,("set_domain_offline: added event handler for domain %s\n",
359 /* Send an offline message to the idmap child when our
360 primary domain goes offline */
362 if ( domain->primary ) {
363 struct winbindd_child *idmap = idmap_child();
365 if ( idmap->pid != 0 ) {
366 messaging_send_buf(winbind_messaging_context(),
367 pid_to_procid(idmap->pid),
369 (uint8 *)domain->name,
370 strlen(domain->name)+1);
377 /****************************************************************
378 Set domain online - if allowed.
379 ****************************************************************/
381 static void set_domain_online(struct winbindd_domain *domain)
385 DEBUG(10,("set_domain_online: called for domain %s\n",
388 if (domain->internal) {
389 DEBUG(3,("set_domain_online: domain %s is internal - logic error.\n",
394 if (get_global_winbindd_state_offline()) {
395 DEBUG(10,("set_domain_online: domain %s remaining globally offline\n",
400 winbindd_set_locator_kdc_envs(domain);
402 /* If we are waiting to get a krb5 ticket, trigger immediately. */
404 set_event_dispatch_time(winbind_event_context(),
405 "krb5_ticket_gain_handler", now);
407 /* Ok, we're out of any startup mode now... */
408 domain->startup = False;
410 if (domain->online == False) {
411 /* We were offline - now we're online. We default to
412 using the MS-RPC backend if we started offline,
413 and if we're going online for the first time we
414 should really re-initialize the backends and the
415 checks to see if we're talking to an AD or NT domain.
418 domain->initialized = False;
420 /* 'reconnect_methods' is the MS-RPC backend. */
421 if (domain->backend == &reconnect_methods) {
422 domain->backend = NULL;
426 /* Ensure we have no online timeout checks. */
427 domain->check_online_timeout = 0;
428 TALLOC_FREE(domain->check_online_event);
430 /* Ensure we ignore any pending child messages. */
431 messaging_deregister(winbind_messaging_context(),
432 MSG_WINBIND_TRY_TO_GO_ONLINE, NULL);
433 messaging_deregister(winbind_messaging_context(),
434 MSG_WINBIND_FAILED_TO_GO_ONLINE, NULL);
436 domain->online = True;
438 /* Send an online message to the idmap child when our
439 primary domain comes online */
441 if ( domain->primary ) {
442 struct winbindd_child *idmap = idmap_child();
444 if ( idmap->pid != 0 ) {
445 messaging_send_buf(winbind_messaging_context(),
446 pid_to_procid(idmap->pid),
448 (uint8 *)domain->name,
449 strlen(domain->name)+1);
456 /****************************************************************
457 Requested to set a domain online.
458 ****************************************************************/
460 void set_domain_online_request(struct winbindd_domain *domain)
464 DEBUG(10,("set_domain_online_request: called for domain %s\n",
467 if (get_global_winbindd_state_offline()) {
468 DEBUG(10,("set_domain_online_request: domain %s remaining globally offline\n",
473 /* We've been told it's safe to go online and
474 try and connect to a DC. But I don't believe it
475 because network manager seems to lie.
476 Wait at least 5 seconds. Heuristics suck... */
478 if (!domain->check_online_event) {
479 /* If we've come from being globally offline we
480 don't have a check online event handler set.
481 We need to add one now we're trying to go
484 DEBUG(10,("set_domain_online_request: domain %s was globally offline.\n",
487 domain->check_online_event = event_add_timed(winbind_event_context(),
489 timeval_current_ofs(5, 0),
490 "check_domain_online_handler",
491 check_domain_online_handler,
494 /* The above *has* to succeed for winbindd to work. */
495 if (!domain->check_online_event) {
496 smb_panic("set_domain_online_request: failed to add online handler");
502 /* Go into "startup" mode again. */
503 domain->startup_time = tev.tv_sec;
504 domain->startup = True;
508 set_event_dispatch_time(winbind_event_context(), "check_domain_online_handler", tev);
511 /****************************************************************
512 Add -ve connection cache entries for domain and realm.
513 ****************************************************************/
515 void winbind_add_failed_connection_entry(const struct winbindd_domain *domain,
519 add_failed_connection_entry(domain->name, server, result);
520 /* If this was the saf name for the last thing we talked to,
522 saf_delete(domain->name);
523 if (*domain->alt_name) {
524 add_failed_connection_entry(domain->alt_name, server, result);
525 saf_delete(domain->alt_name);
527 winbindd_unset_locator_kdc_env(domain);
530 /* Choose between anonymous or authenticated connections. We need to use
531 an authenticated connection if DCs have the RestrictAnonymous registry
532 entry set > 0, or the "Additional restrictions for anonymous
533 connections" set in the win2k Local Security Policy.
535 Caller to free() result in domain, username, password
538 static void cm_get_ipc_userpass(char **username, char **domain, char **password)
540 *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
541 *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
542 *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
544 if (*username && **username) {
546 if (!*domain || !**domain)
547 *domain = smb_xstrdup(lp_workgroup());
549 if (!*password || !**password)
550 *password = smb_xstrdup("");
552 DEBUG(3, ("cm_get_ipc_userpass: Retrieved auth-user from secrets.tdb [%s\\%s]\n",
553 *domain, *username));
556 DEBUG(3, ("cm_get_ipc_userpass: No auth-user defined\n"));
557 *username = smb_xstrdup("");
558 *domain = smb_xstrdup("");
559 *password = smb_xstrdup("");
563 static bool get_dc_name_via_netlogon(struct winbindd_domain *domain,
565 struct sockaddr_storage *dc_ss)
567 struct winbindd_domain *our_domain = NULL;
568 struct rpc_pipe_client *netlogon_pipe = NULL;
572 unsigned int orig_timeout;
573 const char *tmp = NULL;
576 /* Hmmmm. We can only open one connection to the NETLOGON pipe at the
583 if (domain->primary) {
587 our_domain = find_our_domain();
589 if ((mem_ctx = talloc_init("get_dc_name_via_netlogon")) == NULL) {
593 result = cm_connect_netlogon(our_domain, &netlogon_pipe);
594 if (!NT_STATUS_IS_OK(result)) {
595 talloc_destroy(mem_ctx);
599 /* This call can take a long time - allow the server to time out.
600 35 seconds should do it. */
602 orig_timeout = cli_set_timeout(netlogon_pipe->cli, 35000);
604 if (our_domain->active_directory) {
605 struct netr_DsRGetDCNameInfo *domain_info = NULL;
607 result = rpccli_netr_DsRGetDCName(netlogon_pipe,
616 if (W_ERROR_IS_OK(werr)) {
618 mem_ctx, domain_info->dc_unc);
620 DEBUG(0, ("talloc_strdup failed\n"));
621 talloc_destroy(mem_ctx);
624 if (strlen(domain->alt_name) == 0) {
625 fstrcpy(domain->alt_name,
626 domain_info->domain_name);
628 if (strlen(domain->forest_name) == 0) {
629 fstrcpy(domain->forest_name,
630 domain_info->forest_name);
634 result = rpccli_netr_GetAnyDCName(netlogon_pipe, mem_ctx,
641 /* And restore our original timeout. */
642 cli_set_timeout(netlogon_pipe->cli, orig_timeout);
644 if (!NT_STATUS_IS_OK(result)) {
645 DEBUG(10,("rpccli_netr_GetAnyDCName failed: %s\n",
647 talloc_destroy(mem_ctx);
651 if (!W_ERROR_IS_OK(werr)) {
652 DEBUG(10,("rpccli_netr_GetAnyDCName failed: %s\n",
654 talloc_destroy(mem_ctx);
658 /* rpccli_netr_GetAnyDCName gives us a name with \\ */
669 talloc_destroy(mem_ctx);
671 DEBUG(10,("rpccli_netr_GetAnyDCName returned %s\n", dcname));
673 if (!resolve_name(dcname, dc_ss, 0x20)) {
681 * Helper function to assemble trust password and account name
683 static NTSTATUS get_trust_creds(const struct winbindd_domain *domain,
684 char **machine_password,
685 char **machine_account,
686 char **machine_krb5_principal)
688 const char *account_name;
689 const char *name = NULL;
691 /* If we are a DC and this is not our own domain */
696 struct winbindd_domain *our_domain = find_our_domain();
699 return NT_STATUS_INVALID_SERVER_STATE;
701 name = our_domain->name;
704 if (!get_trust_pw_clear(name, machine_password,
705 &account_name, NULL))
707 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
710 if ((machine_account != NULL) &&
711 (asprintf(machine_account, "%s$", account_name) == -1))
713 return NT_STATUS_NO_MEMORY;
716 /* this is at least correct when domain is our domain,
717 * which is the only case, when this is currently used: */
718 if (machine_krb5_principal != NULL)
720 if (asprintf(machine_krb5_principal, "%s$@%s",
721 account_name, domain->alt_name) == -1)
723 return NT_STATUS_NO_MEMORY;
726 strupper_m(*machine_krb5_principal);
732 /************************************************************************
733 Given a fd with a just-connected TCP connection to a DC, open a connection
735 ************************************************************************/
737 static NTSTATUS cm_prepare_connection(const struct winbindd_domain *domain,
739 const char *controller,
740 struct cli_state **cli,
743 char *machine_password = NULL;
744 char *machine_krb5_principal = NULL;
745 char *machine_account = NULL;
746 char *ipc_username = NULL;
747 char *ipc_domain = NULL;
748 char *ipc_password = NULL;
750 struct named_mutex *mutex;
752 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
754 struct sockaddr peeraddr;
755 socklen_t peeraddr_len;
757 struct sockaddr_in *peeraddr_in = (struct sockaddr_in *)&peeraddr;
759 DEBUG(10,("cm_prepare_connection: connecting to DC %s for domain %s\n",
760 controller, domain->name ));
764 mutex = grab_named_mutex(talloc_tos(), controller,
765 WINBIND_SERVER_MUTEX_WAIT_TIME);
767 DEBUG(0,("cm_prepare_connection: mutex grab failed for %s\n",
769 result = NT_STATUS_POSSIBLE_DEADLOCK;
773 if ((*cli = cli_initialise()) == NULL) {
774 DEBUG(1, ("Could not cli_initialize\n"));
775 result = NT_STATUS_NO_MEMORY;
779 (*cli)->timeout = 10000; /* 10 seconds */
781 fstrcpy((*cli)->desthost, controller);
782 (*cli)->use_kerberos = True;
784 peeraddr_len = sizeof(peeraddr);
786 if ((getpeername((*cli)->fd, &peeraddr, &peeraddr_len) != 0) ||
787 (peeraddr_len != sizeof(struct sockaddr_in)) ||
788 (peeraddr_in->sin_family != PF_INET))
790 DEBUG(0,("cm_prepare_connection: %s\n", strerror(errno)));
791 result = NT_STATUS_UNSUCCESSFUL;
795 if (ntohs(peeraddr_in->sin_port) == 139) {
796 struct nmb_name calling;
797 struct nmb_name called;
799 make_nmb_name(&calling, global_myname(), 0x0);
800 make_nmb_name(&called, "*SMBSERVER", 0x20);
802 if (!cli_session_request(*cli, &calling, &called)) {
803 DEBUG(8, ("cli_session_request failed for %s\n",
805 result = NT_STATUS_UNSUCCESSFUL;
810 cli_setup_signing_state(*cli, Undefined);
812 if (!cli_negprot(*cli)) {
813 DEBUG(1, ("cli_negprot failed\n"));
814 result = NT_STATUS_UNSUCCESSFUL;
818 if (!is_trusted_domain_situation(domain->name) &&
819 (*cli)->protocol >= PROTOCOL_NT1 &&
820 (*cli)->capabilities & CAP_EXTENDED_SECURITY)
822 ADS_STATUS ads_status;
824 result = get_trust_creds(domain, &machine_password,
826 &machine_krb5_principal);
827 if (!NT_STATUS_IS_OK(result)) {
831 if (lp_security() == SEC_ADS) {
833 /* Try a krb5 session */
835 (*cli)->use_kerberos = True;
836 DEBUG(5, ("connecting to %s from %s with kerberos principal "
837 "[%s]\n", controller, global_myname(),
838 machine_krb5_principal));
840 winbindd_set_locator_kdc_envs(domain);
842 ads_status = cli_session_setup_spnego(*cli,
843 machine_krb5_principal,
847 if (!ADS_ERR_OK(ads_status)) {
848 DEBUG(4,("failed kerberos session setup with %s\n",
849 ads_errstr(ads_status)));
852 result = ads_ntstatus(ads_status);
853 if (NT_STATUS_IS_OK(result)) {
854 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
855 cli_init_creds(*cli, machine_account, domain->name, machine_password);
856 goto session_setup_done;
860 /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the machine account. */
861 (*cli)->use_kerberos = False;
863 DEBUG(5, ("connecting to %s from %s with username "
864 "[%s]\\[%s]\n", controller, global_myname(),
865 domain->name, machine_account));
867 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 cli_init_creds(*cli, machine_account, domain->name, machine_password);
880 goto session_setup_done;
884 /* Fall back to non-kerberos session setup with auth_user */
886 (*cli)->use_kerberos = False;
888 cm_get_ipc_userpass(&ipc_username, &ipc_domain, &ipc_password);
890 if ((((*cli)->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) != 0) &&
891 (strlen(ipc_username) > 0)) {
893 /* Only try authenticated if we have a username */
895 DEBUG(5, ("connecting to %s from %s with username "
896 "[%s]\\[%s]\n", controller, global_myname(),
897 ipc_domain, ipc_username));
899 if (NT_STATUS_IS_OK(cli_session_setup(
901 ipc_password, strlen(ipc_password)+1,
902 ipc_password, strlen(ipc_password)+1,
904 /* Successful logon with given username. */
905 cli_init_creds(*cli, ipc_username, ipc_domain, ipc_password);
906 goto session_setup_done;
908 DEBUG(4, ("authenticated session setup with user %s\\%s failed.\n",
909 ipc_domain, ipc_username ));
913 /* Fall back to anonymous connection, this might fail later */
915 if (NT_STATUS_IS_OK(cli_session_setup(*cli, "", NULL, 0,
917 DEBUG(5, ("Connected anonymously\n"));
918 cli_init_creds(*cli, "", "", "");
919 goto session_setup_done;
922 result = cli_nt_error(*cli);
924 if (NT_STATUS_IS_OK(result))
925 result = NT_STATUS_UNSUCCESSFUL;
927 /* We can't session setup */
933 /* cache the server name for later connections */
935 saf_store( domain->name, (*cli)->desthost );
936 if (domain->alt_name && (*cli)->use_kerberos) {
937 saf_store( domain->alt_name, (*cli)->desthost );
940 winbindd_set_locator_kdc_envs(domain);
942 if (!cli_send_tconX(*cli, "IPC$", "IPC", "", 0)) {
944 result = cli_nt_error(*cli);
946 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(result)));
948 if (NT_STATUS_IS_OK(result))
949 result = NT_STATUS_UNSUCCESSFUL;
957 /* set the domain if empty; needed for schannel connections */
958 if ( !*(*cli)->domain ) {
959 fstrcpy( (*cli)->domain, domain->name );
962 result = NT_STATUS_OK;
966 SAFE_FREE(machine_account);
967 SAFE_FREE(machine_password);
968 SAFE_FREE(machine_krb5_principal);
969 SAFE_FREE(ipc_username);
970 SAFE_FREE(ipc_domain);
971 SAFE_FREE(ipc_password);
973 if (!NT_STATUS_IS_OK(result)) {
974 winbind_add_failed_connection_entry(domain, controller, result);
975 if ((*cli) != NULL) {
984 static bool add_one_dc_unique(TALLOC_CTX *mem_ctx, const char *domain_name,
985 const char *dcname, struct sockaddr_storage *pss,
986 struct dc_name_ip **dcs, int *num)
988 if (!NT_STATUS_IS_OK(check_negative_conn_cache(domain_name, dcname))) {
989 DEBUG(10, ("DC %s was in the negative conn cache\n", dcname));
993 *dcs = TALLOC_REALLOC_ARRAY(mem_ctx, *dcs, struct dc_name_ip, (*num)+1);
998 fstrcpy((*dcs)[*num].name, dcname);
999 (*dcs)[*num].ss = *pss;
1004 static bool add_sockaddr_to_array(TALLOC_CTX *mem_ctx,
1005 struct sockaddr_storage *pss, uint16 port,
1006 struct sockaddr_storage **addrs, int *num)
1008 *addrs = TALLOC_REALLOC_ARRAY(mem_ctx, *addrs, struct sockaddr_storage, (*num)+1);
1010 if (*addrs == NULL) {
1015 (*addrs)[*num] = *pss;
1016 set_sockaddr_port(&(*addrs)[*num], port);
1022 static void mailslot_name(struct in_addr dc_ip, fstring name)
1024 fstr_sprintf(name, "\\MAILSLOT\\NET\\GETDC%X", dc_ip.s_addr);
1027 static bool send_getdc_request(struct sockaddr_storage *dc_ss,
1028 const char *domain_name,
1032 struct in_addr dc_ip;
1034 fstring my_acct_name;
1035 fstring my_mailslot;
1038 if (dc_ss->ss_family != AF_INET) {
1042 dc_ip = ((struct sockaddr_in *)dc_ss)->sin_addr;
1043 mailslot_name(dc_ip, my_mailslot);
1045 memset(outbuf, '\0', sizeof(outbuf));
1049 SCVAL(p, 0, SAMLOGON);
1052 SCVAL(p, 0, 0); /* Count pointer ... */
1055 SIVAL(p, 0, 0); /* The sender's token ... */
1058 p += dos_PutUniCode(p, global_myname(),
1059 sizeof(outbuf) - PTR_DIFF(p, outbuf), True);
1060 fstr_sprintf(my_acct_name, "%s$", global_myname());
1061 p += dos_PutUniCode(p, my_acct_name,
1062 sizeof(outbuf) - PTR_DIFF(p, outbuf), True);
1064 if (strlen(my_mailslot)+1 > sizeof(outbuf) - PTR_DIFF(p, outbuf)) {
1068 memcpy(p, my_mailslot, strlen(my_mailslot)+1);
1069 p += strlen(my_mailslot)+1;
1071 if (sizeof(outbuf) - PTR_DIFF(p, outbuf) < 8) {
1078 sid_size = ndr_size_dom_sid(sid, 0);
1080 SIVAL(p, 0, sid_size);
1083 p = ALIGN4(p, outbuf);
1084 if (PTR_DIFF(p, outbuf) > sizeof(outbuf)) {
1088 if (sid_size + 8 > sizeof(outbuf) - PTR_DIFF(p, outbuf)) {
1091 sid_linearize(p, sizeof(outbuf) - PTR_DIFF(p, outbuf), sid);
1096 SSVAL(p, 4, 0xffff);
1097 SSVAL(p, 6, 0xffff);
1100 return cli_send_mailslot(winbind_messaging_context(),
1101 False, "\\MAILSLOT\\NET\\NTLOGON", 0,
1102 outbuf, PTR_DIFF(p, outbuf),
1103 global_myname(), 0, domain_name, 0x1c,
1107 static bool receive_getdc_response(struct sockaddr_storage *dc_ss,
1108 const char *domain_name,
1111 struct packet_struct *packet;
1112 fstring my_mailslot;
1114 fstring dcname, user, domain;
1116 struct in_addr dc_ip;
1118 if (dc_ss->ss_family != AF_INET) {
1121 dc_ip = ((struct sockaddr_in *)dc_ss)->sin_addr;
1122 mailslot_name(dc_ip, my_mailslot);
1124 packet = receive_unexpected(DGRAM_PACKET, 0, my_mailslot);
1126 if (packet == NULL) {
1127 DEBUG(5, ("Did not receive packet for %s\n", my_mailslot));
1131 DEBUG(5, ("Received packet for %s\n", my_mailslot));
1133 buf = packet->packet.dgram.data;
1134 len = packet->packet.dgram.datasize;
1137 /* 70 is a completely arbitrary value to make sure
1138 the SVAL below does not read uninitialized memory */
1139 DEBUG(3, ("GetDC got short response\n"));
1143 /* This should be (buf-4)+SVAL(buf-4, smb_vwv12)... */
1144 p = buf+SVAL(buf, smb_vwv10);
1146 if (CVAL(p,0) != SAMLOGON_R) {
1147 DEBUG(8, ("GetDC got invalid response type %d\n", CVAL(p, 0)));
1152 pull_ucs2(buf, dcname, p, sizeof(dcname), PTR_DIFF(buf+len, p),
1153 STR_TERMINATE|STR_NOALIGN);
1154 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
1155 pull_ucs2(buf, user, p, sizeof(dcname), PTR_DIFF(buf+len, p),
1156 STR_TERMINATE|STR_NOALIGN);
1157 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
1158 pull_ucs2(buf, domain, p, sizeof(dcname), PTR_DIFF(buf+len, p),
1159 STR_TERMINATE|STR_NOALIGN);
1160 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
1162 if (!strequal(domain, domain_name)) {
1163 DEBUG(3, ("GetDC: Expected domain %s, got %s\n",
1164 domain_name, domain));
1169 if (*p == '\\') p += 1;
1170 if (*p == '\\') p += 1;
1172 fstrcpy(dc_name, p);
1174 DEBUG(10, ("GetDC gave name %s for domain %s\n",
1180 /*******************************************************************
1181 convert an ip to a name
1182 *******************************************************************/
1184 static bool dcip_to_name(const struct winbindd_domain *domain,
1185 struct sockaddr_storage *pss,
1188 struct ip_service ip_list;
1194 /* For active directory servers, try to get the ldap server name.
1195 None of these failures should be considered critical for now */
1197 if (lp_security() == SEC_ADS) {
1199 char addr[INET6_ADDRSTRLEN];
1201 print_sockaddr(addr, sizeof(addr), pss);
1203 ads = ads_init(domain->alt_name, domain->name, NULL);
1204 ads->auth.flags |= ADS_AUTH_NO_BIND;
1206 if (ads_try_connect(ads, addr)) {
1207 /* We got a cldap packet. */
1208 fstrcpy(name, ads->config.ldap_server_name);
1209 namecache_store(name, 0x20, 1, &ip_list);
1211 DEBUG(10,("dcip_to_name: flags = 0x%x\n", (unsigned int)ads->config.flags));
1213 if (domain->primary && (ads->config.flags & ADS_KDC)) {
1214 if (ads_closest_dc(ads)) {
1215 char *sitename = sitename_fetch(ads->config.realm);
1217 /* We're going to use this KDC for this realm/domain.
1218 If we are using sites, then force the krb5 libs
1221 create_local_private_krb5_conf_for_domain(domain->alt_name,
1226 SAFE_FREE(sitename);
1228 /* use an off site KDC */
1229 create_local_private_krb5_conf_for_domain(domain->alt_name,
1234 winbindd_set_locator_kdc_envs(domain);
1236 /* Ensure we contact this DC also. */
1237 saf_store( domain->name, name);
1238 saf_store( domain->alt_name, name);
1241 ads_destroy( &ads );
1245 ads_destroy( &ads );
1249 /* try GETDC requests next */
1251 if (send_getdc_request(pss, domain->name, &domain->sid)) {
1254 for (i=0; i<5; i++) {
1255 if (receive_getdc_response(pss, domain->name, name)) {
1256 namecache_store(name, 0x20, 1, &ip_list);
1263 /* try node status request */
1265 if ( name_status_find(domain->name, 0x1c, 0x20, pss, name) ) {
1266 namecache_store(name, 0x20, 1, &ip_list);
1272 /*******************************************************************
1273 Retreive a list of IP address for domain controllers. Fill in
1274 the dcs[] with results.
1275 *******************************************************************/
1277 static bool get_dcs(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
1278 struct dc_name_ip **dcs, int *num_dcs)
1281 struct sockaddr_storage ss;
1282 struct ip_service *ip_list = NULL;
1283 int iplist_size = 0;
1286 enum security_types sec = (enum security_types)lp_security();
1288 is_our_domain = strequal(domain->name, lp_workgroup());
1291 && get_dc_name_via_netlogon(domain, dcname, &ss)
1292 && add_one_dc_unique(mem_ctx, domain->name, dcname, &ss, dcs, num_dcs) )
1294 char addr[INET6_ADDRSTRLEN];
1295 print_sockaddr(addr, sizeof(addr), &ss);
1296 DEBUG(10, ("Retrieved DC %s at %s via netlogon\n",
1301 if (sec == SEC_ADS) {
1302 char *sitename = NULL;
1304 /* We need to make sure we know the local site before
1305 doing any DNS queries, as this will restrict the
1306 get_sorted_dc_list() call below to only fetching
1307 DNS records for the correct site. */
1309 /* Find any DC to get the site record.
1310 We deliberately don't care about the
1313 get_dc_name(domain->name, domain->alt_name, dcname, &ss);
1315 sitename = sitename_fetch(domain->alt_name);
1318 /* Do the site-specific AD dns lookup first. */
1319 get_sorted_dc_list(domain->alt_name, sitename, &ip_list, &iplist_size, True);
1321 for ( i=0; i<iplist_size; i++ ) {
1322 char addr[INET6_ADDRSTRLEN];
1323 print_sockaddr(addr, sizeof(addr),
1325 add_one_dc_unique(mem_ctx,
1334 SAFE_FREE(sitename);
1338 /* Now we add DCs from the main AD dns lookup. */
1339 get_sorted_dc_list(domain->alt_name, NULL, &ip_list, &iplist_size, True);
1341 for ( i=0; i<iplist_size; i++ ) {
1342 char addr[INET6_ADDRSTRLEN];
1343 print_sockaddr(addr, sizeof(addr),
1345 add_one_dc_unique(mem_ctx,
1354 /* try standard netbios queries if no ADS */
1356 if (iplist_size==0) {
1357 get_sorted_dc_list(domain->name, NULL, &ip_list, &iplist_size, False);
1360 /* FIXME!! this is where we should re-insert the GETDC requests --jerry */
1362 /* now add to the dc array. We'll wait until the last minute
1363 to look up the name of the DC. But we fill in the char* for
1364 the ip now in to make the failed connection cache work */
1366 for ( i=0; i<iplist_size; i++ ) {
1367 char addr[INET6_ADDRSTRLEN];
1368 print_sockaddr(addr, sizeof(addr),
1370 add_one_dc_unique(mem_ctx, domain->name, addr,
1371 &ip_list[i].ss, dcs, num_dcs);
1374 SAFE_FREE( ip_list );
1379 static bool find_new_dc(TALLOC_CTX *mem_ctx,
1380 struct winbindd_domain *domain,
1381 fstring dcname, struct sockaddr_storage *pss, int *fd)
1383 struct dc_name_ip *dcs = NULL;
1386 const char **dcnames = NULL;
1387 int num_dcnames = 0;
1389 struct sockaddr_storage *addrs = NULL;
1395 if (!get_dcs(mem_ctx, domain, &dcs, &num_dcs) || (num_dcs == 0))
1398 for (i=0; i<num_dcs; i++) {
1400 if (!add_string_to_array(mem_ctx, dcs[i].name,
1401 &dcnames, &num_dcnames)) {
1404 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, 445,
1405 &addrs, &num_addrs)) {
1409 if (!add_string_to_array(mem_ctx, dcs[i].name,
1410 &dcnames, &num_dcnames)) {
1413 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, 139,
1414 &addrs, &num_addrs)) {
1419 if ((num_dcnames == 0) || (num_dcnames != num_addrs))
1422 if ((addrs == NULL) || (dcnames == NULL))
1425 /* 5 second timeout. */
1426 if (!open_any_socket_out(addrs, num_addrs, 5000, &fd_index, fd) ) {
1427 for (i=0; i<num_dcs; i++) {
1428 char ab[INET6_ADDRSTRLEN];
1429 print_sockaddr(ab, sizeof(ab), &dcs[i].ss);
1430 DEBUG(10, ("find_new_dc: open_any_socket_out failed for "
1431 "domain %s address %s. Error was %s\n",
1432 domain->name, ab, strerror(errno) ));
1433 winbind_add_failed_connection_entry(domain,
1434 dcs[i].name, NT_STATUS_UNSUCCESSFUL);
1439 *pss = addrs[fd_index];
1441 if (*dcnames[fd_index] != '\0' && !is_ipaddress(dcnames[fd_index])) {
1442 /* Ok, we've got a name for the DC */
1443 fstrcpy(dcname, dcnames[fd_index]);
1447 /* Try to figure out the name */
1448 if (dcip_to_name(domain, pss, dcname)) {
1452 /* We can not continue without the DC's name */
1453 winbind_add_failed_connection_entry(domain, dcs[fd_index].name,
1454 NT_STATUS_UNSUCCESSFUL);
1458 static NTSTATUS cm_open_connection(struct winbindd_domain *domain,
1459 struct winbindd_cm_conn *new_conn)
1461 TALLOC_CTX *mem_ctx;
1463 char *saf_servername = saf_fetch( domain->name );
1466 if ((mem_ctx = talloc_init("cm_open_connection")) == NULL) {
1467 SAFE_FREE(saf_servername);
1468 set_domain_offline(domain);
1469 return NT_STATUS_NO_MEMORY;
1472 /* we have to check the server affinity cache here since
1473 later we selecte a DC based on response time and not preference */
1475 /* Check the negative connection cache
1476 before talking to it. It going down may have
1477 triggered the reconnection. */
1479 if ( saf_servername && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, saf_servername))) {
1481 DEBUG(10,("cm_open_connection: saf_servername is '%s' for domain %s\n",
1482 saf_servername, domain->name ));
1484 /* convert an ip address to a name */
1485 if (is_ipaddress( saf_servername ) ) {
1487 struct sockaddr_storage ss;
1489 if (!interpret_string_addr(&ss, saf_servername,
1491 return NT_STATUS_UNSUCCESSFUL;
1493 if (dcip_to_name( domain, &ss, saf_name )) {
1494 fstrcpy( domain->dcname, saf_name );
1496 winbind_add_failed_connection_entry(
1497 domain, saf_servername,
1498 NT_STATUS_UNSUCCESSFUL);
1501 fstrcpy( domain->dcname, saf_servername );
1504 SAFE_FREE( saf_servername );
1507 for (retries = 0; retries < 3; retries++) {
1511 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1513 DEBUG(10,("cm_open_connection: dcname is '%s' for domain %s\n",
1514 domain->dcname, domain->name ));
1517 && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, domain->dcname))
1518 && (resolve_name(domain->dcname, &domain->dcaddr, 0x20)))
1520 struct sockaddr_storage *addrs = NULL;
1524 if (!add_sockaddr_to_array(mem_ctx, &domain->dcaddr, 445, &addrs, &num_addrs)) {
1525 set_domain_offline(domain);
1526 talloc_destroy(mem_ctx);
1527 return NT_STATUS_NO_MEMORY;
1529 if (!add_sockaddr_to_array(mem_ctx, &domain->dcaddr, 139, &addrs, &num_addrs)) {
1530 set_domain_offline(domain);
1531 talloc_destroy(mem_ctx);
1532 return NT_STATUS_NO_MEMORY;
1535 /* 5 second timeout. */
1536 if (!open_any_socket_out(addrs, num_addrs, 5000, &dummy, &fd)) {
1542 && !find_new_dc(mem_ctx, domain, domain->dcname, &domain->dcaddr, &fd))
1544 /* This is the one place where we will
1545 set the global winbindd offline state
1546 to true, if a "WINBINDD_OFFLINE" entry
1547 is found in the winbindd cache. */
1548 set_global_winbindd_state_offline();
1552 new_conn->cli = NULL;
1554 result = cm_prepare_connection(domain, fd, domain->dcname,
1555 &new_conn->cli, &retry);
1561 if (NT_STATUS_IS_OK(result)) {
1563 winbindd_set_locator_kdc_envs(domain);
1565 if (domain->online == False) {
1566 /* We're changing state from offline to online. */
1567 set_global_winbindd_state_online();
1569 set_domain_online(domain);
1571 /* Ensure we setup the retry handler. */
1572 set_domain_offline(domain);
1575 talloc_destroy(mem_ctx);
1579 /* Close down all open pipes on a connection. */
1581 void invalidate_cm_connection(struct winbindd_cm_conn *conn)
1583 /* We're closing down a possibly dead
1584 connection. Don't have impossibly long (10s) timeouts. */
1587 cli_set_timeout(conn->cli, 1000); /* 1 second. */
1590 if (conn->samr_pipe != NULL) {
1591 if (!cli_rpc_pipe_close(conn->samr_pipe)) {
1592 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1594 cli_set_timeout(conn->cli, 500);
1597 conn->samr_pipe = NULL;
1600 if (conn->lsa_pipe != NULL) {
1601 if (!cli_rpc_pipe_close(conn->lsa_pipe)) {
1602 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1604 cli_set_timeout(conn->cli, 500);
1607 conn->lsa_pipe = NULL;
1610 if (conn->netlogon_pipe != NULL) {
1611 if (!cli_rpc_pipe_close(conn->netlogon_pipe)) {
1612 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1614 cli_set_timeout(conn->cli, 500);
1617 conn->netlogon_pipe = NULL;
1621 cli_shutdown(conn->cli);
1627 void close_conns_after_fork(void)
1629 struct winbindd_domain *domain;
1631 for (domain = domain_list(); domain; domain = domain->next) {
1632 if (domain->conn.cli == NULL)
1635 if (domain->conn.cli->fd == -1)
1638 close(domain->conn.cli->fd);
1639 domain->conn.cli->fd = -1;
1643 static bool connection_ok(struct winbindd_domain *domain)
1645 if (domain->conn.cli == NULL) {
1646 DEBUG(8, ("connection_ok: Connection to %s for domain %s has NULL "
1647 "cli!\n", domain->dcname, domain->name));
1651 if (!domain->conn.cli->initialised) {
1652 DEBUG(3, ("connection_ok: Connection to %s for domain %s was never "
1653 "initialised!\n", domain->dcname, domain->name));
1657 if (domain->conn.cli->fd == -1) {
1658 DEBUG(3, ("connection_ok: Connection to %s for domain %s has died or was "
1659 "never started (fd == -1)\n",
1660 domain->dcname, domain->name));
1664 if (domain->online == False) {
1665 DEBUG(3, ("connection_ok: Domain %s is offline\n", domain->name));
1672 /* Initialize a new connection up to the RPC BIND.
1673 Bypass online status check so always does network calls. */
1675 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain)
1679 /* Internal connections never use the network. */
1680 if (domain->internal) {
1681 domain->initialized = True;
1682 return NT_STATUS_OK;
1685 if (connection_ok(domain)) {
1686 if (!domain->initialized) {
1687 set_dc_type_and_flags(domain);
1689 return NT_STATUS_OK;
1692 invalidate_cm_connection(&domain->conn);
1694 result = cm_open_connection(domain, &domain->conn);
1696 if (NT_STATUS_IS_OK(result) && !domain->initialized) {
1697 set_dc_type_and_flags(domain);
1703 NTSTATUS init_dc_connection(struct winbindd_domain *domain)
1705 if (domain->initialized && !domain->online) {
1706 /* We check for online status elsewhere. */
1707 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1710 return init_dc_connection_network(domain);
1713 /******************************************************************************
1714 Set the trust flags (direction and forest location) for a domain
1715 ******************************************************************************/
1717 static bool set_dc_type_and_flags_trustinfo( struct winbindd_domain *domain )
1719 struct winbindd_domain *our_domain;
1720 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1721 struct netr_DomainTrustList trusts;
1723 uint32 flags = (NETR_TRUST_FLAG_IN_FOREST |
1724 NETR_TRUST_FLAG_OUTBOUND |
1725 NETR_TRUST_FLAG_INBOUND);
1726 struct rpc_pipe_client *cli;
1727 TALLOC_CTX *mem_ctx = NULL;
1729 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s\n", domain->name ));
1731 /* Our primary domain doesn't need to worry about trust flags.
1732 Force it to go through the network setup */
1733 if ( domain->primary ) {
1737 our_domain = find_our_domain();
1739 if ( !connection_ok(our_domain) ) {
1740 DEBUG(3,("set_dc_type_and_flags_trustinfo: No connection to our domain!\n"));
1744 /* This won't work unless our domain is AD */
1746 if ( !our_domain->active_directory ) {
1750 /* Use DsEnumerateDomainTrusts to get us the trust direction
1753 result = cm_connect_netlogon(our_domain, &cli);
1755 if (!NT_STATUS_IS_OK(result)) {
1756 DEBUG(5, ("set_dc_type_and_flags_trustinfo: Could not open "
1757 "a connection to %s for PIPE_NETLOGON (%s)\n",
1758 domain->name, nt_errstr(result)));
1762 if ( (mem_ctx = talloc_init("set_dc_type_and_flags_trustinfo")) == NULL ) {
1763 DEBUG(0,("set_dc_type_and_flags_trustinfo: talloc_init() failed!\n"));
1767 result = rpccli_netr_DsrEnumerateDomainTrusts(cli, mem_ctx,
1772 if (!NT_STATUS_IS_OK(result)) {
1773 DEBUG(0,("set_dc_type_and_flags_trustinfo: "
1774 "failed to query trusted domain list: %s\n",
1775 nt_errstr(result)));
1776 talloc_destroy(mem_ctx);
1780 /* Now find the domain name and get the flags */
1782 for ( i=0; i<trusts.count; i++ ) {
1783 if ( strequal( domain->name, trusts.array[i].netbios_name) ) {
1784 domain->domain_flags = trusts.array[i].trust_flags;
1785 domain->domain_type = trusts.array[i].trust_type;
1786 domain->domain_trust_attribs = trusts.array[i].trust_attributes;
1788 if ( domain->domain_type == NETR_TRUST_TYPE_UPLEVEL )
1789 domain->active_directory = True;
1791 /* This flag is only set if the domain is *our*
1792 primary domain and the primary domain is in
1795 domain->native_mode = (domain->domain_flags & NETR_TRUST_FLAG_NATIVE);
1797 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s is %sin "
1798 "native mode.\n", domain->name,
1799 domain->native_mode ? "" : "NOT "));
1801 DEBUG(5,("set_dc_type_and_flags_trustinfo: domain %s is %s"
1802 "running active directory.\n", domain->name,
1803 domain->active_directory ? "" : "NOT "));
1806 domain->initialized = True;
1808 if ( !winbindd_can_contact_domain( domain) )
1809 domain->internal = True;
1815 talloc_destroy( mem_ctx );
1817 return domain->initialized;
1820 /******************************************************************************
1821 We can 'sense' certain things about the DC by it's replies to certain
1824 This tells us if this particular remote server is Active Directory, and if it
1826 ******************************************************************************/
1828 static void set_dc_type_and_flags_connect( struct winbindd_domain *domain )
1832 TALLOC_CTX *mem_ctx = NULL;
1833 struct rpc_pipe_client *cli;
1835 union dssetup_DsRoleInfo info;
1836 union lsa_PolicyInformation *lsa_info = NULL;
1838 if (!connection_ok(domain)) {
1842 mem_ctx = talloc_init("set_dc_type_and_flags on domain %s\n",
1845 DEBUG(1, ("set_dc_type_and_flags_connect: talloc_init() failed\n"));
1849 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s\n", domain->name ));
1851 cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_DSSETUP,
1855 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1856 "PI_DSSETUP on domain %s: (%s)\n",
1857 domain->name, nt_errstr(result)));
1859 /* if this is just a non-AD domain we need to continue
1860 * identifying so that we can in the end return with
1861 * domain->initialized = True - gd */
1866 result = rpccli_dssetup_DsRoleGetPrimaryDomainInformation(cli, mem_ctx,
1867 DS_ROLE_BASIC_INFORMATION,
1870 cli_rpc_pipe_close(cli);
1872 if (!NT_STATUS_IS_OK(result)) {
1873 DEBUG(5, ("set_dc_type_and_flags_connect: rpccli_ds_getprimarydominfo "
1874 "on domain %s failed: (%s)\n",
1875 domain->name, nt_errstr(result)));
1877 /* older samba3 DCs will return DCERPC_FAULT_OP_RNG_ERROR for
1878 * every opcode on the DSSETUP pipe, continue with
1879 * no_dssetup mode here as well to get domain->initialized
1882 if (NT_STATUS_V(result) == DCERPC_FAULT_OP_RNG_ERROR) {
1886 TALLOC_FREE(mem_ctx);
1890 if ((info.basic.flags & DS_ROLE_PRIMARY_DS_RUNNING) &&
1891 !(info.basic.flags & DS_ROLE_PRIMARY_DS_MIXED_MODE)) {
1892 domain->native_mode = True;
1894 domain->native_mode = False;
1898 cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_LSARPC, &result);
1901 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1902 "PI_LSARPC on domain %s: (%s)\n",
1903 domain->name, nt_errstr(result)));
1904 cli_rpc_pipe_close(cli);
1905 TALLOC_FREE(mem_ctx);
1909 result = rpccli_lsa_open_policy2(cli, mem_ctx, True,
1910 SEC_RIGHTS_MAXIMUM_ALLOWED, &pol);
1912 if (NT_STATUS_IS_OK(result)) {
1913 /* This particular query is exactly what Win2k clients use
1914 to determine that the DC is active directory */
1915 result = rpccli_lsa_QueryInfoPolicy2(cli, mem_ctx,
1917 LSA_POLICY_INFO_DNS,
1921 if (NT_STATUS_IS_OK(result)) {
1922 domain->active_directory = True;
1924 if (lsa_info->dns.name.string) {
1925 fstrcpy(domain->name, lsa_info->dns.name.string);
1928 if (lsa_info->dns.dns_domain.string) {
1929 fstrcpy(domain->alt_name,
1930 lsa_info->dns.dns_domain.string);
1933 /* See if we can set some domain trust flags about
1936 if (lsa_info->dns.dns_forest.string) {
1937 fstrcpy(domain->forest_name,
1938 lsa_info->dns.dns_forest.string);
1940 if (strequal(domain->forest_name, domain->alt_name)) {
1941 domain->domain_flags = NETR_TRUST_FLAG_TREEROOT;
1945 if (lsa_info->dns.sid) {
1946 sid_copy(&domain->sid, lsa_info->dns.sid);
1949 domain->active_directory = False;
1951 result = rpccli_lsa_open_policy(cli, mem_ctx, True,
1952 SEC_RIGHTS_MAXIMUM_ALLOWED,
1955 if (!NT_STATUS_IS_OK(result)) {
1959 result = rpccli_lsa_QueryInfoPolicy(cli, mem_ctx,
1961 LSA_POLICY_INFO_ACCOUNT_DOMAIN,
1964 if (NT_STATUS_IS_OK(result)) {
1966 if (lsa_info->account_domain.name.string) {
1967 fstrcpy(domain->name,
1968 lsa_info->account_domain.name.string);
1971 if (lsa_info->account_domain.sid) {
1972 sid_copy(&domain->sid, lsa_info->account_domain.sid);
1978 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s is %sin native mode.\n",
1979 domain->name, domain->native_mode ? "" : "NOT "));
1981 DEBUG(5,("set_dc_type_and_flags_connect: domain %s is %srunning active directory.\n",
1982 domain->name, domain->active_directory ? "" : "NOT "));
1984 cli_rpc_pipe_close(cli);
1986 TALLOC_FREE(mem_ctx);
1988 domain->initialized = True;
1991 /**********************************************************************
1992 Set the domain_flags (trust attributes, domain operating modes, etc...
1993 ***********************************************************************/
1995 static void set_dc_type_and_flags( struct winbindd_domain *domain )
1997 /* we always have to contact our primary domain */
1999 if ( domain->primary ) {
2000 DEBUG(10,("set_dc_type_and_flags: setting up flags for "
2001 "primary domain\n"));
2002 set_dc_type_and_flags_connect( domain );
2006 /* Use our DC to get the information if possible */
2008 if ( !set_dc_type_and_flags_trustinfo( domain ) ) {
2009 /* Otherwise, fallback to contacting the
2011 set_dc_type_and_flags_connect( domain );
2019 /**********************************************************************
2020 ***********************************************************************/
2022 static bool cm_get_schannel_dcinfo(struct winbindd_domain *domain,
2023 struct dcinfo **ppdc)
2026 struct rpc_pipe_client *netlogon_pipe;
2028 if (lp_client_schannel() == False) {
2032 result = cm_connect_netlogon(domain, &netlogon_pipe);
2033 if (!NT_STATUS_IS_OK(result)) {
2037 /* Return a pointer to the struct dcinfo from the
2040 *ppdc = domain->conn.netlogon_pipe->dc;
2044 NTSTATUS cm_connect_sam(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2045 struct rpc_pipe_client **cli, POLICY_HND *sam_handle)
2047 struct winbindd_cm_conn *conn;
2048 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2050 struct dcinfo *p_dcinfo;
2051 char *machine_password = NULL;
2052 char *machine_account = NULL;
2053 char *domain_name = NULL;
2055 result = init_dc_connection(domain);
2056 if (!NT_STATUS_IS_OK(result)) {
2060 conn = &domain->conn;
2062 if (conn->samr_pipe != NULL) {
2067 * No SAMR pipe yet. Attempt to get an NTLMSSP SPNEGO authenticated
2068 * sign and sealed pipe using the machine account password by
2069 * preference. If we can't - try schannel, if that fails, try
2073 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
2074 if ((conn->cli->user_name[0] == '\0') ||
2075 (conn->cli->domain[0] == '\0') ||
2076 (conn_pwd[0] == '\0'))
2078 result = get_trust_creds(domain, &machine_password,
2079 &machine_account, NULL);
2080 if (!NT_STATUS_IS_OK(result)) {
2081 DEBUG(10, ("cm_connect_sam: No no user available for "
2082 "domain %s, trying schannel\n", conn->cli->domain));
2085 domain_name = domain->name;
2087 machine_password = SMB_STRDUP(conn_pwd);
2088 machine_account = SMB_STRDUP(conn->cli->user_name);
2089 domain_name = conn->cli->domain;
2092 if (!machine_password || !machine_account) {
2093 result = NT_STATUS_NO_MEMORY;
2097 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2098 authenticated SAMR pipe with sign & seal. */
2100 cli_rpc_pipe_open_spnego_ntlmssp(conn->cli, PI_SAMR,
2101 PIPE_AUTH_LEVEL_PRIVACY,
2104 machine_password, &result);
2106 if (conn->samr_pipe == NULL) {
2107 DEBUG(10,("cm_connect_sam: failed to connect to SAMR "
2108 "pipe for domain %s using NTLMSSP "
2109 "authenticated pipe: user %s\\%s. Error was "
2110 "%s\n", domain->name, domain_name,
2111 machine_account, nt_errstr(result)));
2115 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for "
2116 "domain %s using NTLMSSP authenticated "
2117 "pipe: user %s\\%s\n", domain->name,
2118 domain_name, machine_account));
2120 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2121 conn->samr_pipe->cli->desthost,
2122 SEC_RIGHTS_MAXIMUM_ALLOWED,
2123 &conn->sam_connect_handle);
2124 if (NT_STATUS_IS_OK(result)) {
2127 DEBUG(10,("cm_connect_sam: ntlmssp-sealed rpccli_samr_Connect2 "
2128 "failed for domain %s, error was %s. Trying schannel\n",
2129 domain->name, nt_errstr(result) ));
2130 cli_rpc_pipe_close(conn->samr_pipe);
2134 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2136 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
2137 /* If this call fails - conn->cli can now be NULL ! */
2138 DEBUG(10, ("cm_connect_sam: Could not get schannel auth info "
2139 "for domain %s, trying anon\n", domain->name));
2142 conn->samr_pipe = cli_rpc_pipe_open_schannel_with_key
2143 (conn->cli, PI_SAMR, PIPE_AUTH_LEVEL_PRIVACY,
2144 domain->name, p_dcinfo, &result);
2146 if (conn->samr_pipe == NULL) {
2147 DEBUG(10,("cm_connect_sam: failed to connect to SAMR pipe for "
2148 "domain %s using schannel. Error was %s\n",
2149 domain->name, nt_errstr(result) ));
2152 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for domain %s using "
2153 "schannel.\n", domain->name ));
2155 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2156 conn->samr_pipe->cli->desthost,
2157 SEC_RIGHTS_MAXIMUM_ALLOWED,
2158 &conn->sam_connect_handle);
2159 if (NT_STATUS_IS_OK(result)) {
2162 DEBUG(10,("cm_connect_sam: schannel-sealed rpccli_samr_Connect2 failed "
2163 "for domain %s, error was %s. Trying anonymous\n",
2164 domain->name, nt_errstr(result) ));
2165 cli_rpc_pipe_close(conn->samr_pipe);
2169 /* Finally fall back to anonymous. */
2170 conn->samr_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_SAMR,
2173 if (conn->samr_pipe == NULL) {
2174 result = NT_STATUS_PIPE_NOT_AVAILABLE;
2178 result = rpccli_samr_Connect2(conn->samr_pipe, mem_ctx,
2179 conn->samr_pipe->cli->desthost,
2180 SEC_RIGHTS_MAXIMUM_ALLOWED,
2181 &conn->sam_connect_handle);
2182 if (!NT_STATUS_IS_OK(result)) {
2183 DEBUG(10,("cm_connect_sam: rpccli_samr_Connect2 failed "
2184 "for domain %s Error was %s\n",
2185 domain->name, nt_errstr(result) ));
2190 result = rpccli_samr_OpenDomain(conn->samr_pipe,
2192 &conn->sam_connect_handle,
2193 SEC_RIGHTS_MAXIMUM_ALLOWED,
2195 &conn->sam_domain_handle);
2199 if (!NT_STATUS_IS_OK(result)) {
2200 invalidate_cm_connection(conn);
2204 *cli = conn->samr_pipe;
2205 *sam_handle = conn->sam_domain_handle;
2206 SAFE_FREE(machine_password);
2207 SAFE_FREE(machine_account);
2211 NTSTATUS cm_connect_lsa(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2212 struct rpc_pipe_client **cli, POLICY_HND *lsa_policy)
2214 struct winbindd_cm_conn *conn;
2215 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2217 struct dcinfo *p_dcinfo;
2219 result = init_dc_connection(domain);
2220 if (!NT_STATUS_IS_OK(result))
2223 conn = &domain->conn;
2225 if (conn->lsa_pipe != NULL) {
2229 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
2230 if ((conn->cli->user_name[0] == '\0') ||
2231 (conn->cli->domain[0] == '\0') ||
2232 (conn_pwd[0] == '\0')) {
2233 DEBUG(10, ("cm_connect_lsa: No no user available for "
2234 "domain %s, trying schannel\n", conn->cli->domain));
2238 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2239 * authenticated LSA pipe with sign & seal. */
2240 conn->lsa_pipe = cli_rpc_pipe_open_spnego_ntlmssp
2241 (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
2242 conn->cli->domain, conn->cli->user_name, conn_pwd, &result);
2244 if (conn->lsa_pipe == NULL) {
2245 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2246 "domain %s using NTLMSSP authenticated pipe: user "
2247 "%s\\%s. Error was %s. Trying schannel.\n",
2248 domain->name, conn->cli->domain,
2249 conn->cli->user_name, nt_errstr(result)));
2253 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2254 "NTLMSSP authenticated pipe: user %s\\%s\n",
2255 domain->name, conn->cli->domain, conn->cli->user_name ));
2257 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2258 SEC_RIGHTS_MAXIMUM_ALLOWED,
2260 if (NT_STATUS_IS_OK(result)) {
2264 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2267 cli_rpc_pipe_close(conn->lsa_pipe);
2271 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2273 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
2274 /* If this call fails - conn->cli can now be NULL ! */
2275 DEBUG(10, ("cm_connect_lsa: Could not get schannel auth info "
2276 "for domain %s, trying anon\n", domain->name));
2279 conn->lsa_pipe = cli_rpc_pipe_open_schannel_with_key
2280 (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
2281 domain->name, p_dcinfo, &result);
2283 if (conn->lsa_pipe == NULL) {
2284 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2285 "domain %s using schannel. Error was %s\n",
2286 domain->name, nt_errstr(result) ));
2289 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2290 "schannel.\n", domain->name ));
2292 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2293 SEC_RIGHTS_MAXIMUM_ALLOWED,
2295 if (NT_STATUS_IS_OK(result)) {
2299 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2302 cli_rpc_pipe_close(conn->lsa_pipe);
2306 conn->lsa_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_LSARPC,
2308 if (conn->lsa_pipe == NULL) {
2309 result = NT_STATUS_PIPE_NOT_AVAILABLE;
2313 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2314 SEC_RIGHTS_MAXIMUM_ALLOWED,
2317 if (!NT_STATUS_IS_OK(result)) {
2318 invalidate_cm_connection(conn);
2322 *cli = conn->lsa_pipe;
2323 *lsa_policy = conn->lsa_policy;
2327 /****************************************************************************
2328 Open the netlogon pipe to this DC. Use schannel if specified in client conf.
2329 session key stored in conn->netlogon_pipe->dc->sess_key.
2330 ****************************************************************************/
2332 NTSTATUS cm_connect_netlogon(struct winbindd_domain *domain,
2333 struct rpc_pipe_client **cli)
2335 struct winbindd_cm_conn *conn;
2338 uint32 neg_flags = NETLOGON_NEG_SELECT_AUTH2_FLAGS;
2340 uint32 sec_chan_type;
2341 const char *account_name;
2342 struct rpc_pipe_client *netlogon_pipe = NULL;
2346 result = init_dc_connection(domain);
2347 if (!NT_STATUS_IS_OK(result)) {
2351 conn = &domain->conn;
2353 if (conn->netlogon_pipe != NULL) {
2354 *cli = conn->netlogon_pipe;
2355 return NT_STATUS_OK;
2358 netlogon_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_NETLOGON,
2360 if (netlogon_pipe == NULL) {
2364 if ((!IS_DC) && (!domain->primary)) {
2365 /* Clear the schannel request bit and drop down */
2366 neg_flags &= ~NETLOGON_NEG_SCHANNEL;
2370 if (lp_client_schannel() != False) {
2371 neg_flags |= NETLOGON_NEG_SCHANNEL;
2374 if (!get_trust_pw_hash(domain->name, mach_pwd, &account_name,
2377 cli_rpc_pipe_close(netlogon_pipe);
2378 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2381 result = rpccli_netlogon_setup_creds(
2383 domain->dcname, /* server name. */
2384 domain->name, /* domain name */
2385 global_myname(), /* client name */
2386 account_name, /* machine account */
2387 mach_pwd, /* machine password */
2388 sec_chan_type, /* from get_trust_pw */
2391 if (!NT_STATUS_IS_OK(result)) {
2392 cli_rpc_pipe_close(netlogon_pipe);
2396 if ((lp_client_schannel() == True) &&
2397 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2398 DEBUG(3, ("Server did not offer schannel\n"));
2399 cli_rpc_pipe_close(netlogon_pipe);
2400 return NT_STATUS_ACCESS_DENIED;
2404 if ((lp_client_schannel() == False) ||
2405 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2406 /* We're done - just keep the existing connection to NETLOGON
2408 conn->netlogon_pipe = netlogon_pipe;
2409 *cli = conn->netlogon_pipe;
2410 return NT_STATUS_OK;
2413 /* Using the credentials from the first pipe, open a signed and sealed
2414 second netlogon pipe. The session key is stored in the schannel
2415 part of the new pipe auth struct.
2418 conn->netlogon_pipe =
2419 cli_rpc_pipe_open_schannel_with_key(conn->cli,
2421 PIPE_AUTH_LEVEL_PRIVACY,
2426 /* We can now close the initial netlogon pipe. */
2427 cli_rpc_pipe_close(netlogon_pipe);
2429 if (conn->netlogon_pipe == NULL) {
2430 DEBUG(3, ("Could not open schannel'ed NETLOGON pipe. Error "
2431 "was %s\n", nt_errstr(result)));
2433 /* make sure we return something besides OK */
2434 return !NT_STATUS_IS_OK(result) ? result : NT_STATUS_PIPE_NOT_AVAILABLE;
2437 *cli = conn->netlogon_pipe;
2438 return NT_STATUS_OK;