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, const 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(const 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;
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 werr = rpccli_netlogon_getanydcname(netlogon_pipe, mem_ctx, our_domain->dcname,
607 /* And restore our original timeout. */
608 cli_set_timeout(netlogon_pipe->cli, orig_timeout);
610 talloc_destroy(mem_ctx);
612 if (!W_ERROR_IS_OK(werr)) {
613 DEBUG(10, ("rpccli_netlogon_getanydcname failed: %s\n",
618 /* cli_netlogon_getanydcname gives us a name with \\ */
629 DEBUG(10, ("rpccli_netlogon_getanydcname returned %s\n", dcname));
631 if (!resolve_name(dcname, dc_ss, 0x20)) {
639 * Helper function to assemble trust password and account name
641 static NTSTATUS get_trust_creds(const struct winbindd_domain *domain,
642 char **machine_password,
643 char **machine_account,
644 char **machine_krb5_principal)
646 const char *account_name;
648 if (!get_trust_pw_clear(domain->name, machine_password,
649 &account_name, NULL))
651 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
654 if ((machine_account != NULL) &&
655 (asprintf(machine_account, "%s$", account_name) == -1))
657 return NT_STATUS_NO_MEMORY;
660 /* this is at least correct when domain is our domain,
661 * which is the only case, when this is currently used: */
662 if ((machine_krb5_principal != NULL) &&
663 (asprintf(machine_krb5_principal, "%s$@%s", account_name,
664 domain->alt_name) == -1))
666 return NT_STATUS_NO_MEMORY;
672 /************************************************************************
673 Given a fd with a just-connected TCP connection to a DC, open a connection
675 ************************************************************************/
677 static NTSTATUS cm_prepare_connection(const struct winbindd_domain *domain,
679 const char *controller,
680 struct cli_state **cli,
683 char *machine_password = NULL;
684 char *machine_krb5_principal = NULL;
685 char *machine_account = NULL;
686 char *ipc_username = NULL;
687 char *ipc_domain = NULL;
688 char *ipc_password = NULL;
692 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
694 struct sockaddr peeraddr;
695 socklen_t peeraddr_len;
697 struct sockaddr_in *peeraddr_in = (struct sockaddr_in *)&peeraddr;
699 DEBUG(10,("cm_prepare_connection: connecting to DC %s for domain %s\n",
700 controller, domain->name ));
704 got_mutex = secrets_named_mutex(controller,
705 WINBIND_SERVER_MUTEX_WAIT_TIME);
708 DEBUG(0,("cm_prepare_connection: mutex grab failed for %s\n",
710 result = NT_STATUS_POSSIBLE_DEADLOCK;
714 if ((*cli = cli_initialise()) == NULL) {
715 DEBUG(1, ("Could not cli_initialize\n"));
716 result = NT_STATUS_NO_MEMORY;
720 (*cli)->timeout = 10000; /* 10 seconds */
722 fstrcpy((*cli)->desthost, controller);
723 (*cli)->use_kerberos = True;
725 peeraddr_len = sizeof(peeraddr);
727 if ((getpeername((*cli)->fd, &peeraddr, &peeraddr_len) != 0) ||
728 (peeraddr_len != sizeof(struct sockaddr_in)) ||
729 (peeraddr_in->sin_family != PF_INET))
731 DEBUG(0,("cm_prepare_connection: %s\n", strerror(errno)));
732 result = NT_STATUS_UNSUCCESSFUL;
736 if (ntohs(peeraddr_in->sin_port) == 139) {
737 struct nmb_name calling;
738 struct nmb_name called;
740 make_nmb_name(&calling, global_myname(), 0x0);
741 make_nmb_name(&called, "*SMBSERVER", 0x20);
743 if (!cli_session_request(*cli, &calling, &called)) {
744 DEBUG(8, ("cli_session_request failed for %s\n",
746 result = NT_STATUS_UNSUCCESSFUL;
751 cli_setup_signing_state(*cli, Undefined);
753 if (!cli_negprot(*cli)) {
754 DEBUG(1, ("cli_negprot failed\n"));
755 result = NT_STATUS_UNSUCCESSFUL;
759 if (!is_trusted_domain_situation(domain->name) &&
760 (*cli)->protocol >= PROTOCOL_NT1 &&
761 (*cli)->capabilities & CAP_EXTENDED_SECURITY)
763 ADS_STATUS ads_status;
765 result = get_trust_creds(domain, &machine_password,
767 &machine_krb5_principal);
768 if (!NT_STATUS_IS_OK(result)) {
772 if (lp_security() == SEC_ADS) {
774 /* Try a krb5 session */
776 (*cli)->use_kerberos = True;
777 DEBUG(5, ("connecting to %s from %s with kerberos principal "
778 "[%s]\n", controller, global_myname(),
779 machine_krb5_principal));
781 winbindd_set_locator_kdc_envs(domain);
783 ads_status = cli_session_setup_spnego(*cli,
784 machine_krb5_principal,
788 if (!ADS_ERR_OK(ads_status)) {
789 DEBUG(4,("failed kerberos session setup with %s\n",
790 ads_errstr(ads_status)));
793 result = ads_ntstatus(ads_status);
794 if (NT_STATUS_IS_OK(result)) {
795 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
796 cli_init_creds(*cli, machine_account, domain->name, machine_password);
797 goto session_setup_done;
801 /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the machine account. */
802 (*cli)->use_kerberos = False;
804 DEBUG(5, ("connecting to %s from %s with username "
805 "[%s]\\[%s]\n", controller, global_myname(),
806 domain->name, machine_account));
808 ads_status = cli_session_setup_spnego(*cli,
812 if (!ADS_ERR_OK(ads_status)) {
813 DEBUG(4, ("authenticated session setup failed with %s\n",
814 ads_errstr(ads_status)));
817 result = ads_ntstatus(ads_status);
818 if (NT_STATUS_IS_OK(result)) {
819 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
820 cli_init_creds(*cli, machine_account, domain->name, machine_password);
821 goto session_setup_done;
825 /* Fall back to non-kerberos session setup with auth_user */
827 (*cli)->use_kerberos = False;
829 cm_get_ipc_userpass(&ipc_username, &ipc_domain, &ipc_password);
831 if ((((*cli)->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) != 0) &&
832 (strlen(ipc_username) > 0)) {
834 /* Only try authenticated if we have a username */
836 DEBUG(5, ("connecting to %s from %s with username "
837 "[%s]\\[%s]\n", controller, global_myname(),
838 ipc_domain, ipc_username));
840 if (NT_STATUS_IS_OK(cli_session_setup(
842 ipc_password, strlen(ipc_password)+1,
843 ipc_password, strlen(ipc_password)+1,
845 /* Successful logon with given username. */
846 cli_init_creds(*cli, ipc_username, ipc_domain, ipc_password);
847 goto session_setup_done;
849 DEBUG(4, ("authenticated session setup with user %s\\%s failed.\n",
850 ipc_domain, ipc_username ));
854 /* Fall back to anonymous connection, this might fail later */
856 if (NT_STATUS_IS_OK(cli_session_setup(*cli, "", NULL, 0,
858 DEBUG(5, ("Connected anonymously\n"));
859 cli_init_creds(*cli, "", "", "");
860 goto session_setup_done;
863 result = cli_nt_error(*cli);
865 if (NT_STATUS_IS_OK(result))
866 result = NT_STATUS_UNSUCCESSFUL;
868 /* We can't session setup */
874 /* cache the server name for later connections */
876 saf_store( domain->name, (*cli)->desthost );
877 if (domain->alt_name && (*cli)->use_kerberos) {
878 saf_store( domain->alt_name, (*cli)->desthost );
881 winbindd_set_locator_kdc_envs(domain);
883 if (!cli_send_tconX(*cli, "IPC$", "IPC", "", 0)) {
885 result = cli_nt_error(*cli);
887 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(result)));
889 if (NT_STATUS_IS_OK(result))
890 result = NT_STATUS_UNSUCCESSFUL;
895 secrets_named_mutex_release(controller);
899 /* set the domain if empty; needed for schannel connections */
900 if ( !*(*cli)->domain ) {
901 fstrcpy( (*cli)->domain, domain->name );
904 result = NT_STATUS_OK;
908 secrets_named_mutex_release(controller);
911 SAFE_FREE(machine_account);
912 SAFE_FREE(machine_password);
913 SAFE_FREE(machine_krb5_principal);
914 SAFE_FREE(ipc_username);
915 SAFE_FREE(ipc_domain);
916 SAFE_FREE(ipc_password);
918 if (!NT_STATUS_IS_OK(result)) {
919 winbind_add_failed_connection_entry(domain, controller, result);
920 if ((*cli) != NULL) {
929 static bool add_one_dc_unique(TALLOC_CTX *mem_ctx, const char *domain_name,
930 const char *dcname, struct sockaddr_storage *pss,
931 struct dc_name_ip **dcs, int *num)
933 if (!NT_STATUS_IS_OK(check_negative_conn_cache(domain_name, dcname))) {
934 DEBUG(10, ("DC %s was in the negative conn cache\n", dcname));
938 *dcs = TALLOC_REALLOC_ARRAY(mem_ctx, *dcs, struct dc_name_ip, (*num)+1);
943 fstrcpy((*dcs)[*num].name, dcname);
944 (*dcs)[*num].ss = *pss;
949 static bool add_sockaddr_to_array(TALLOC_CTX *mem_ctx,
950 struct sockaddr_storage *pss, uint16 port,
951 struct sockaddr_storage **addrs, int *num)
953 *addrs = TALLOC_REALLOC_ARRAY(mem_ctx, *addrs, struct sockaddr_storage, (*num)+1);
955 if (*addrs == NULL) {
960 (*addrs)[*num] = *pss;
961 set_sockaddr_port(&(*addrs)[*num], port);
967 static void mailslot_name(struct in_addr dc_ip, fstring name)
969 fstr_sprintf(name, "\\MAILSLOT\\NET\\GETDC%X", dc_ip.s_addr);
972 static bool send_getdc_request(struct sockaddr_storage *dc_ss,
973 const char *domain_name,
977 struct in_addr dc_ip;
979 fstring my_acct_name;
982 if (dc_ss->ss_family != AF_INET) {
986 dc_ip = ((struct sockaddr_in *)dc_ss)->sin_addr;
987 mailslot_name(dc_ip, my_mailslot);
989 memset(outbuf, '\0', sizeof(outbuf));
993 SCVAL(p, 0, SAMLOGON);
996 SCVAL(p, 0, 0); /* Count pointer ... */
999 SIVAL(p, 0, 0); /* The sender's token ... */
1002 p += dos_PutUniCode(p, global_myname(),
1003 sizeof(outbuf) - PTR_DIFF(p, outbuf), True);
1004 fstr_sprintf(my_acct_name, "%s$", global_myname());
1005 p += dos_PutUniCode(p, my_acct_name,
1006 sizeof(outbuf) - PTR_DIFF(p, outbuf), True);
1008 if (strlen(my_mailslot)+1 > sizeof(outbuf) - PTR_DIFF(p, outbuf)) {
1012 memcpy(p, my_mailslot, strlen(my_mailslot)+1);
1013 p += strlen(my_mailslot)+1;
1015 if (sizeof(outbuf) - PTR_DIFF(p, outbuf) < 8) {
1022 SIVAL(p, 0, sid_size(sid));
1025 p = ALIGN4(p, outbuf);
1026 if (PTR_DIFF(p, outbuf) > sizeof(outbuf)) {
1030 sid_linearize(p, sid_size(sid), sid);
1031 if (sid_size(sid) + 8 > sizeof(outbuf) - PTR_DIFF(p, outbuf)) {
1038 SSVAL(p, 4, 0xffff);
1039 SSVAL(p, 6, 0xffff);
1042 return cli_send_mailslot(winbind_messaging_context(),
1043 False, "\\MAILSLOT\\NET\\NTLOGON", 0,
1044 outbuf, PTR_DIFF(p, outbuf),
1045 global_myname(), 0, domain_name, 0x1c,
1049 static bool receive_getdc_response(struct sockaddr_storage *dc_ss,
1050 const char *domain_name,
1053 struct packet_struct *packet;
1054 fstring my_mailslot;
1056 fstring dcname, user, domain;
1058 struct in_addr dc_ip;
1060 if (dc_ss->ss_family != AF_INET) {
1063 dc_ip = ((struct sockaddr_in *)dc_ss)->sin_addr;
1064 mailslot_name(dc_ip, my_mailslot);
1066 packet = receive_unexpected(DGRAM_PACKET, 0, my_mailslot);
1068 if (packet == NULL) {
1069 DEBUG(5, ("Did not receive packet for %s\n", my_mailslot));
1073 DEBUG(5, ("Received packet for %s\n", my_mailslot));
1075 buf = packet->packet.dgram.data;
1076 len = packet->packet.dgram.datasize;
1079 /* 70 is a completely arbitrary value to make sure
1080 the SVAL below does not read uninitialized memory */
1081 DEBUG(3, ("GetDC got short response\n"));
1085 /* This should be (buf-4)+SVAL(buf-4, smb_vwv12)... */
1086 p = buf+SVAL(buf, smb_vwv10);
1088 if (CVAL(p,0) != SAMLOGON_R) {
1089 DEBUG(8, ("GetDC got invalid response type %d\n", CVAL(p, 0)));
1094 pull_ucs2(buf, dcname, p, sizeof(dcname), PTR_DIFF(buf+len, p),
1095 STR_TERMINATE|STR_NOALIGN);
1096 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
1097 pull_ucs2(buf, user, p, sizeof(dcname), PTR_DIFF(buf+len, p),
1098 STR_TERMINATE|STR_NOALIGN);
1099 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
1100 pull_ucs2(buf, domain, p, sizeof(dcname), PTR_DIFF(buf+len, p),
1101 STR_TERMINATE|STR_NOALIGN);
1102 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
1104 if (!strequal(domain, domain_name)) {
1105 DEBUG(3, ("GetDC: Expected domain %s, got %s\n",
1106 domain_name, domain));
1111 if (*p == '\\') p += 1;
1112 if (*p == '\\') p += 1;
1114 fstrcpy(dc_name, p);
1116 DEBUG(10, ("GetDC gave name %s for domain %s\n",
1122 /*******************************************************************
1123 convert an ip to a name
1124 *******************************************************************/
1126 static bool dcip_to_name(const struct winbindd_domain *domain,
1127 struct sockaddr_storage *pss,
1130 struct ip_service ip_list;
1136 /* For active directory servers, try to get the ldap server name.
1137 None of these failures should be considered critical for now */
1139 if (lp_security() == SEC_ADS) {
1141 char addr[INET6_ADDRSTRLEN];
1143 print_sockaddr(addr, sizeof(addr), pss);
1145 ads = ads_init(domain->alt_name, domain->name, NULL);
1146 ads->auth.flags |= ADS_AUTH_NO_BIND;
1148 if (ads_try_connect(ads, addr)) {
1149 /* We got a cldap packet. */
1150 fstrcpy(name, ads->config.ldap_server_name);
1151 namecache_store(name, 0x20, 1, &ip_list);
1153 DEBUG(10,("dcip_to_name: flags = 0x%x\n", (unsigned int)ads->config.flags));
1155 if (domain->primary && (ads->config.flags & ADS_KDC)) {
1156 if (ads_closest_dc(ads)) {
1157 char *sitename = sitename_fetch(ads->config.realm);
1159 /* We're going to use this KDC for this realm/domain.
1160 If we are using sites, then force the krb5 libs
1163 create_local_private_krb5_conf_for_domain(domain->alt_name,
1168 SAFE_FREE(sitename);
1170 /* use an off site KDC */
1171 create_local_private_krb5_conf_for_domain(domain->alt_name,
1176 winbindd_set_locator_kdc_envs(domain);
1178 /* Ensure we contact this DC also. */
1179 saf_store( domain->name, name);
1180 saf_store( domain->alt_name, name);
1183 ads_destroy( &ads );
1187 ads_destroy( &ads );
1191 /* try GETDC requests next */
1193 if (send_getdc_request(pss, domain->name, &domain->sid)) {
1196 for (i=0; i<5; i++) {
1197 if (receive_getdc_response(pss, domain->name, name)) {
1198 namecache_store(name, 0x20, 1, &ip_list);
1205 /* try node status request */
1207 if ( name_status_find(domain->name, 0x1c, 0x20, pss, name) ) {
1208 namecache_store(name, 0x20, 1, &ip_list);
1214 /*******************************************************************
1215 Retreive a list of IP address for domain controllers. Fill in
1216 the dcs[] with results.
1217 *******************************************************************/
1219 static bool get_dcs(TALLOC_CTX *mem_ctx, const struct winbindd_domain *domain,
1220 struct dc_name_ip **dcs, int *num_dcs)
1223 struct sockaddr_storage ss;
1224 struct ip_service *ip_list = NULL;
1225 int iplist_size = 0;
1228 enum security_types sec = (enum security_types)lp_security();
1230 is_our_domain = strequal(domain->name, lp_workgroup());
1233 && get_dc_name_via_netlogon(domain, dcname, &ss)
1234 && add_one_dc_unique(mem_ctx, domain->name, dcname, &ss, dcs, num_dcs) )
1236 char addr[INET6_ADDRSTRLEN];
1237 print_sockaddr(addr, sizeof(addr), &ss);
1238 DEBUG(10, ("Retrieved DC %s at %s via netlogon\n",
1243 if (sec == SEC_ADS) {
1244 char *sitename = NULL;
1246 /* We need to make sure we know the local site before
1247 doing any DNS queries, as this will restrict the
1248 get_sorted_dc_list() call below to only fetching
1249 DNS records for the correct site. */
1251 /* Find any DC to get the site record.
1252 We deliberately don't care about the
1255 get_dc_name(domain->name, domain->alt_name, dcname, &ss);
1257 sitename = sitename_fetch(domain->alt_name);
1260 /* Do the site-specific AD dns lookup first. */
1261 get_sorted_dc_list(domain->alt_name, sitename, &ip_list, &iplist_size, True);
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,
1276 SAFE_FREE(sitename);
1280 /* Now we add DCs from the main AD dns lookup. */
1281 get_sorted_dc_list(domain->alt_name, NULL, &ip_list, &iplist_size, True);
1283 for ( i=0; i<iplist_size; i++ ) {
1284 char addr[INET6_ADDRSTRLEN];
1285 print_sockaddr(addr, sizeof(addr),
1287 add_one_dc_unique(mem_ctx,
1296 /* try standard netbios queries if no ADS */
1298 if (iplist_size==0) {
1299 get_sorted_dc_list(domain->name, NULL, &ip_list, &iplist_size, False);
1302 /* FIXME!! this is where we should re-insert the GETDC requests --jerry */
1304 /* now add to the dc array. We'll wait until the last minute
1305 to look up the name of the DC. But we fill in the char* for
1306 the ip now in to make the failed connection cache work */
1308 for ( i=0; i<iplist_size; i++ ) {
1309 char addr[INET6_ADDRSTRLEN];
1310 print_sockaddr(addr, sizeof(addr),
1312 add_one_dc_unique(mem_ctx, domain->name, addr,
1313 &ip_list[i].ss, dcs, num_dcs);
1316 SAFE_FREE( ip_list );
1321 static bool find_new_dc(TALLOC_CTX *mem_ctx,
1322 const struct winbindd_domain *domain,
1323 fstring dcname, struct sockaddr_storage *pss, int *fd)
1325 struct dc_name_ip *dcs = NULL;
1328 const char **dcnames = NULL;
1329 int num_dcnames = 0;
1331 struct sockaddr_storage *addrs = NULL;
1337 if (!get_dcs(mem_ctx, domain, &dcs, &num_dcs) || (num_dcs == 0))
1340 for (i=0; i<num_dcs; i++) {
1342 if (!add_string_to_array(mem_ctx, dcs[i].name,
1343 &dcnames, &num_dcnames)) {
1346 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, 445,
1347 &addrs, &num_addrs)) {
1351 if (!add_string_to_array(mem_ctx, dcs[i].name,
1352 &dcnames, &num_dcnames)) {
1355 if (!add_sockaddr_to_array(mem_ctx, &dcs[i].ss, 139,
1356 &addrs, &num_addrs)) {
1361 if ((num_dcnames == 0) || (num_dcnames != num_addrs))
1364 if ((addrs == NULL) || (dcnames == NULL))
1367 /* 5 second timeout. */
1368 if (!open_any_socket_out(addrs, num_addrs, 5000, &fd_index, fd) ) {
1369 for (i=0; i<num_dcs; i++) {
1370 char ab[INET6_ADDRSTRLEN];
1371 print_sockaddr(ab, sizeof(ab), &dcs[i].ss);
1372 DEBUG(10, ("find_new_dc: open_any_socket_out failed for "
1373 "domain %s address %s. Error was %s\n",
1374 domain->name, ab, strerror(errno) ));
1375 winbind_add_failed_connection_entry(domain,
1376 dcs[i].name, NT_STATUS_UNSUCCESSFUL);
1381 *pss = addrs[fd_index];
1383 if (*dcnames[fd_index] != '\0' && !is_ipaddress(dcnames[fd_index])) {
1384 /* Ok, we've got a name for the DC */
1385 fstrcpy(dcname, dcnames[fd_index]);
1389 /* Try to figure out the name */
1390 if (dcip_to_name(domain, pss, dcname)) {
1394 /* We can not continue without the DC's name */
1395 winbind_add_failed_connection_entry(domain, dcs[fd_index].name,
1396 NT_STATUS_UNSUCCESSFUL);
1400 static NTSTATUS cm_open_connection(struct winbindd_domain *domain,
1401 struct winbindd_cm_conn *new_conn)
1403 TALLOC_CTX *mem_ctx;
1405 char *saf_servername = saf_fetch( domain->name );
1408 if ((mem_ctx = talloc_init("cm_open_connection")) == NULL) {
1409 SAFE_FREE(saf_servername);
1410 set_domain_offline(domain);
1411 return NT_STATUS_NO_MEMORY;
1414 /* we have to check the server affinity cache here since
1415 later we selecte a DC based on response time and not preference */
1417 /* Check the negative connection cache
1418 before talking to it. It going down may have
1419 triggered the reconnection. */
1421 if ( saf_servername && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, saf_servername))) {
1423 DEBUG(10,("cm_open_connection: saf_servername is '%s' for domain %s\n",
1424 saf_servername, domain->name ));
1426 /* convert an ip address to a name */
1427 if (is_ipaddress( saf_servername ) ) {
1429 struct sockaddr_storage ss;
1431 if (!interpret_string_addr(&ss, saf_servername,
1433 return NT_STATUS_UNSUCCESSFUL;
1435 if (dcip_to_name( domain, &ss, saf_name )) {
1436 fstrcpy( domain->dcname, saf_name );
1438 winbind_add_failed_connection_entry(
1439 domain, saf_servername,
1440 NT_STATUS_UNSUCCESSFUL);
1443 fstrcpy( domain->dcname, saf_servername );
1446 SAFE_FREE( saf_servername );
1449 for (retries = 0; retries < 3; retries++) {
1453 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1455 DEBUG(10,("cm_open_connection: dcname is '%s' for domain %s\n",
1456 domain->dcname, domain->name ));
1459 && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, domain->dcname))
1460 && (resolve_name(domain->dcname, &domain->dcaddr, 0x20)))
1462 struct sockaddr_storage *addrs = NULL;
1466 if (!add_sockaddr_to_array(mem_ctx, &domain->dcaddr, 445, &addrs, &num_addrs)) {
1467 set_domain_offline(domain);
1468 talloc_destroy(mem_ctx);
1469 return NT_STATUS_NO_MEMORY;
1471 if (!add_sockaddr_to_array(mem_ctx, &domain->dcaddr, 139, &addrs, &num_addrs)) {
1472 set_domain_offline(domain);
1473 talloc_destroy(mem_ctx);
1474 return NT_STATUS_NO_MEMORY;
1477 /* 5 second timeout. */
1478 if (!open_any_socket_out(addrs, num_addrs, 5000, &dummy, &fd)) {
1484 && !find_new_dc(mem_ctx, domain, domain->dcname, &domain->dcaddr, &fd))
1486 /* This is the one place where we will
1487 set the global winbindd offline state
1488 to true, if a "WINBINDD_OFFLINE" entry
1489 is found in the winbindd cache. */
1490 set_global_winbindd_state_offline();
1494 new_conn->cli = NULL;
1496 result = cm_prepare_connection(domain, fd, domain->dcname,
1497 &new_conn->cli, &retry);
1503 if (NT_STATUS_IS_OK(result)) {
1505 winbindd_set_locator_kdc_envs(domain);
1507 if (domain->online == False) {
1508 /* We're changing state from offline to online. */
1509 set_global_winbindd_state_online();
1511 set_domain_online(domain);
1513 /* Ensure we setup the retry handler. */
1514 set_domain_offline(domain);
1517 talloc_destroy(mem_ctx);
1521 /* Close down all open pipes on a connection. */
1523 void invalidate_cm_connection(struct winbindd_cm_conn *conn)
1525 /* We're closing down a possibly dead
1526 connection. Don't have impossibly long (10s) timeouts. */
1529 cli_set_timeout(conn->cli, 1000); /* 1 second. */
1532 if (conn->samr_pipe != NULL) {
1533 if (!cli_rpc_pipe_close(conn->samr_pipe)) {
1534 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1536 cli_set_timeout(conn->cli, 500);
1539 conn->samr_pipe = NULL;
1542 if (conn->lsa_pipe != NULL) {
1543 if (!cli_rpc_pipe_close(conn->lsa_pipe)) {
1544 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1546 cli_set_timeout(conn->cli, 500);
1549 conn->lsa_pipe = NULL;
1552 if (conn->netlogon_pipe != NULL) {
1553 if (!cli_rpc_pipe_close(conn->netlogon_pipe)) {
1554 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1556 cli_set_timeout(conn->cli, 500);
1559 conn->netlogon_pipe = NULL;
1563 cli_shutdown(conn->cli);
1569 void close_conns_after_fork(void)
1571 struct winbindd_domain *domain;
1573 for (domain = domain_list(); domain; domain = domain->next) {
1574 if (domain->conn.cli == NULL)
1577 if (domain->conn.cli->fd == -1)
1580 close(domain->conn.cli->fd);
1581 domain->conn.cli->fd = -1;
1585 static bool connection_ok(struct winbindd_domain *domain)
1587 if (domain->conn.cli == NULL) {
1588 DEBUG(8, ("connection_ok: Connection to %s for domain %s has NULL "
1589 "cli!\n", domain->dcname, domain->name));
1593 if (!domain->conn.cli->initialised) {
1594 DEBUG(3, ("connection_ok: Connection to %s for domain %s was never "
1595 "initialised!\n", domain->dcname, domain->name));
1599 if (domain->conn.cli->fd == -1) {
1600 DEBUG(3, ("connection_ok: Connection to %s for domain %s has died or was "
1601 "never started (fd == -1)\n",
1602 domain->dcname, domain->name));
1606 if (domain->online == False) {
1607 DEBUG(3, ("connection_ok: Domain %s is offline\n", domain->name));
1614 /* Initialize a new connection up to the RPC BIND.
1615 Bypass online status check so always does network calls. */
1617 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain)
1621 /* Internal connections never use the network. */
1622 if (domain->internal) {
1623 domain->initialized = True;
1624 return NT_STATUS_OK;
1627 if (connection_ok(domain)) {
1628 if (!domain->initialized) {
1629 set_dc_type_and_flags(domain);
1631 return NT_STATUS_OK;
1634 invalidate_cm_connection(&domain->conn);
1636 result = cm_open_connection(domain, &domain->conn);
1638 if (NT_STATUS_IS_OK(result) && !domain->initialized) {
1639 set_dc_type_and_flags(domain);
1645 NTSTATUS init_dc_connection(struct winbindd_domain *domain)
1647 if (domain->initialized && !domain->online) {
1648 /* We check for online status elsewhere. */
1649 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1652 return init_dc_connection_network(domain);
1655 /******************************************************************************
1656 Set the trust flags (direction and forest location) for a domain
1657 ******************************************************************************/
1659 static bool set_dc_type_and_flags_trustinfo( struct winbindd_domain *domain )
1661 struct winbindd_domain *our_domain;
1662 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1663 struct ds_domain_trust *domains = NULL;
1666 uint32 flags = (DS_DOMAIN_IN_FOREST |
1667 DS_DOMAIN_DIRECT_OUTBOUND |
1668 DS_DOMAIN_DIRECT_INBOUND);
1669 struct rpc_pipe_client *cli;
1670 TALLOC_CTX *mem_ctx = NULL;
1672 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s\n", domain->name ));
1674 /* Our primary domain doesn't need to worry about trust flags.
1675 Force it to go through the network setup */
1676 if ( domain->primary ) {
1680 our_domain = find_our_domain();
1682 if ( !connection_ok(our_domain) ) {
1683 DEBUG(3,("set_dc_type_and_flags_trustinfo: No connection to our domain!\n"));
1687 /* This won't work unless our domain is AD */
1689 if ( !our_domain->active_directory ) {
1693 /* Use DsEnumerateDomainTrusts to get us the trust direction
1696 result = cm_connect_netlogon(our_domain, &cli);
1698 if (!NT_STATUS_IS_OK(result)) {
1699 DEBUG(5, ("set_dc_type_and_flags_trustinfo: Could not open "
1700 "a connection to %s for PIPE_NETLOGON (%s)\n",
1701 domain->name, nt_errstr(result)));
1705 if ( (mem_ctx = talloc_init("set_dc_type_and_flags_trustinfo")) == NULL ) {
1706 DEBUG(0,("set_dc_type_and_flags_trustinfo: talloc_init() failed!\n"));
1710 result = rpccli_ds_enum_domain_trusts(cli, mem_ctx,
1713 (unsigned int *)&count);
1715 /* Now find the domain name and get the flags */
1717 for ( i=0; i<count; i++ ) {
1718 if ( strequal( domain->name, domains[i].netbios_domain ) ) {
1719 domain->domain_flags = domains[i].flags;
1720 domain->domain_type = domains[i].trust_type;
1721 domain->domain_trust_attribs = domains[i].trust_attributes;
1723 if ( domain->domain_type == DS_DOMAIN_TRUST_TYPE_UPLEVEL )
1724 domain->active_directory = True;
1726 /* This flag is only set if the domain is *our*
1727 primary domain and the primary domain is in
1730 domain->native_mode = (domain->domain_flags & DS_DOMAIN_NATIVE_MODE);
1732 DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s is %sin "
1733 "native mode.\n", domain->name,
1734 domain->native_mode ? "" : "NOT "));
1736 DEBUG(5,("set_dc_type_and_flags_trustinfo: domain %s is %s"
1737 "running active directory.\n", domain->name,
1738 domain->active_directory ? "" : "NOT "));
1741 domain->initialized = True;
1743 if ( !winbindd_can_contact_domain( domain) )
1744 domain->internal = True;
1750 talloc_destroy( mem_ctx );
1752 return domain->initialized;
1755 /******************************************************************************
1756 We can 'sense' certain things about the DC by it's replies to certain
1759 This tells us if this particular remote server is Active Directory, and if it
1761 ******************************************************************************/
1763 static void set_dc_type_and_flags_connect( struct winbindd_domain *domain )
1767 TALLOC_CTX *mem_ctx = NULL;
1768 struct rpc_pipe_client *cli;
1771 char *domain_name = NULL;
1772 char *dns_name = NULL;
1773 char *forest_name = NULL;
1774 DOM_SID *dom_sid = NULL;
1778 if (!connection_ok(domain)) {
1782 mem_ctx = talloc_init("set_dc_type_and_flags on domain %s\n",
1785 DEBUG(1, ("set_dc_type_and_flags_connect: talloc_init() failed\n"));
1789 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s\n", domain->name ));
1791 cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_LSARPC_DS,
1795 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1796 "PI_LSARPC_DS on domain %s: (%s)\n",
1797 domain->name, nt_errstr(result)));
1799 /* if this is just a non-AD domain we need to continue
1800 * identifying so that we can in the end return with
1801 * domain->initialized = True - gd */
1806 result = rpccli_ds_getprimarydominfo(cli, mem_ctx,
1807 DsRolePrimaryDomainInfoBasic,
1809 cli_rpc_pipe_close(cli);
1811 if (!NT_STATUS_IS_OK(result)) {
1812 DEBUG(5, ("set_dc_type_and_flags_connect: rpccli_ds_getprimarydominfo "
1813 "on domain %s failed: (%s)\n",
1814 domain->name, nt_errstr(result)));
1816 /* older samba3 DCs will return DCERPC_FAULT_OP_RNG_ERROR for
1817 * every opcode on the LSARPC_DS pipe, continue with
1818 * no_lsarpc_ds mode here as well to get domain->initialized
1821 if (NT_STATUS_V(result) == DCERPC_FAULT_OP_RNG_ERROR) {
1825 TALLOC_FREE(mem_ctx);
1829 if ((ctr.basic->flags & DSROLE_PRIMARY_DS_RUNNING) &&
1830 !(ctr.basic->flags & DSROLE_PRIMARY_DS_MIXED_MODE)) {
1831 domain->native_mode = True;
1833 domain->native_mode = False;
1837 cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_LSARPC, &result);
1840 DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
1841 "PI_LSARPC on domain %s: (%s)\n",
1842 domain->name, nt_errstr(result)));
1843 cli_rpc_pipe_close(cli);
1844 TALLOC_FREE(mem_ctx);
1848 result = rpccli_lsa_open_policy2(cli, mem_ctx, True,
1849 SEC_RIGHTS_MAXIMUM_ALLOWED, &pol);
1851 if (NT_STATUS_IS_OK(result)) {
1852 /* This particular query is exactly what Win2k clients use
1853 to determine that the DC is active directory */
1854 result = rpccli_lsa_query_info_policy2(cli, mem_ctx, &pol,
1856 &dns_name, &forest_name,
1860 if (NT_STATUS_IS_OK(result)) {
1861 domain->active_directory = True;
1864 fstrcpy(domain->name, domain_name);
1867 fstrcpy(domain->alt_name, dns_name);
1870 fstrcpy(domain->forest_name, forest_name);
1873 sid_copy(&domain->sid, dom_sid);
1875 domain->active_directory = False;
1877 result = rpccli_lsa_open_policy(cli, mem_ctx, True,
1878 SEC_RIGHTS_MAXIMUM_ALLOWED,
1881 if (!NT_STATUS_IS_OK(result))
1884 result = rpccli_lsa_query_info_policy(cli, mem_ctx,
1885 &pol, 5, &domain_name,
1888 if (NT_STATUS_IS_OK(result)) {
1890 fstrcpy(domain->name, domain_name);
1893 sid_copy(&domain->sid, dom_sid);
1898 DEBUG(5, ("set_dc_type_and_flags_connect: domain %s is %sin native mode.\n",
1899 domain->name, domain->native_mode ? "" : "NOT "));
1901 DEBUG(5,("set_dc_type_and_flags_connect: domain %s is %srunning active directory.\n",
1902 domain->name, domain->active_directory ? "" : "NOT "));
1904 cli_rpc_pipe_close(cli);
1906 TALLOC_FREE(mem_ctx);
1908 domain->initialized = True;
1911 /**********************************************************************
1912 Set the domain_flags (trust attributes, domain operating modes, etc...
1913 ***********************************************************************/
1915 static void set_dc_type_and_flags( struct winbindd_domain *domain )
1917 /* we always have to contact our primary domain */
1919 if ( domain->primary ) {
1920 DEBUG(10,("set_dc_type_and_flags: setting up flags for "
1921 "primary domain\n"));
1922 set_dc_type_and_flags_connect( domain );
1926 /* Use our DC to get the information if possible */
1928 if ( !set_dc_type_and_flags_trustinfo( domain ) ) {
1929 /* Otherwise, fallback to contacting the
1931 set_dc_type_and_flags_connect( domain );
1939 /**********************************************************************
1940 ***********************************************************************/
1942 static bool cm_get_schannel_dcinfo(struct winbindd_domain *domain,
1943 struct dcinfo **ppdc)
1946 struct rpc_pipe_client *netlogon_pipe;
1948 if (lp_client_schannel() == False) {
1952 result = cm_connect_netlogon(domain, &netlogon_pipe);
1953 if (!NT_STATUS_IS_OK(result)) {
1957 /* Return a pointer to the struct dcinfo from the
1960 *ppdc = domain->conn.netlogon_pipe->dc;
1964 NTSTATUS cm_connect_sam(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
1965 struct rpc_pipe_client **cli, POLICY_HND *sam_handle)
1967 struct winbindd_cm_conn *conn;
1968 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1970 struct dcinfo *p_dcinfo;
1971 char *machine_password = NULL;
1972 char *machine_account = NULL;
1973 char *domain_name = NULL;
1975 result = init_dc_connection(domain);
1976 if (!NT_STATUS_IS_OK(result)) {
1980 conn = &domain->conn;
1982 if (conn->samr_pipe != NULL) {
1987 * No SAMR pipe yet. Attempt to get an NTLMSSP SPNEGO authenticated
1988 * sign and sealed pipe using the machine account password by
1989 * preference. If we can't - try schannel, if that fails, try
1993 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
1994 if ((conn->cli->user_name[0] == '\0') ||
1995 (conn->cli->domain[0] == '\0') ||
1996 (conn_pwd[0] == '\0'))
1998 result = get_trust_creds(domain, &machine_password,
1999 &machine_account, NULL);
2000 if (!NT_STATUS_IS_OK(result)) {
2001 DEBUG(10, ("cm_connect_sam: No no user available for "
2002 "domain %s, trying schannel\n", conn->cli->domain));
2005 domain_name = domain->name;
2008 machine_password = conn_pwd;
2009 machine_account = conn->cli->user_name;
2010 domain_name = conn->cli->domain;
2014 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2015 authenticated SAMR pipe with sign & seal. */
2017 cli_rpc_pipe_open_spnego_ntlmssp(conn->cli, PI_SAMR,
2018 PIPE_AUTH_LEVEL_PRIVACY,
2021 machine_password, &result);
2023 if (conn->samr_pipe == NULL) {
2024 DEBUG(10,("cm_connect_sam: failed to connect to SAMR "
2025 "pipe for domain %s using NTLMSSP "
2026 "authenticated pipe: user %s\\%s. Error was "
2027 "%s\n", domain->name, domain_name,
2028 machine_account, nt_errstr(result)));
2032 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for "
2033 "domain %s using NTLMSSP authenticated "
2034 "pipe: user %s\\%s\n", domain->name,
2035 domain_name, machine_account));
2037 result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
2038 SEC_RIGHTS_MAXIMUM_ALLOWED,
2039 &conn->sam_connect_handle);
2040 if (NT_STATUS_IS_OK(result)) {
2043 DEBUG(10,("cm_connect_sam: ntlmssp-sealed rpccli_samr_connect "
2044 "failed for domain %s, error was %s. Trying schannel\n",
2045 domain->name, nt_errstr(result) ));
2046 cli_rpc_pipe_close(conn->samr_pipe);
2050 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2052 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
2053 /* If this call fails - conn->cli can now be NULL ! */
2054 DEBUG(10, ("cm_connect_sam: Could not get schannel auth info "
2055 "for domain %s, trying anon\n", domain->name));
2058 conn->samr_pipe = cli_rpc_pipe_open_schannel_with_key
2059 (conn->cli, PI_SAMR, PIPE_AUTH_LEVEL_PRIVACY,
2060 domain->name, p_dcinfo, &result);
2062 if (conn->samr_pipe == NULL) {
2063 DEBUG(10,("cm_connect_sam: failed to connect to SAMR pipe for "
2064 "domain %s using schannel. Error was %s\n",
2065 domain->name, nt_errstr(result) ));
2068 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for domain %s using "
2069 "schannel.\n", domain->name ));
2071 result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
2072 SEC_RIGHTS_MAXIMUM_ALLOWED,
2073 &conn->sam_connect_handle);
2074 if (NT_STATUS_IS_OK(result)) {
2077 DEBUG(10,("cm_connect_sam: schannel-sealed rpccli_samr_connect failed "
2078 "for domain %s, error was %s. Trying anonymous\n",
2079 domain->name, nt_errstr(result) ));
2080 cli_rpc_pipe_close(conn->samr_pipe);
2084 /* Finally fall back to anonymous. */
2085 conn->samr_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_SAMR,
2088 if (conn->samr_pipe == NULL) {
2089 result = NT_STATUS_PIPE_NOT_AVAILABLE;
2093 result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
2094 SEC_RIGHTS_MAXIMUM_ALLOWED,
2095 &conn->sam_connect_handle);
2096 if (!NT_STATUS_IS_OK(result)) {
2097 DEBUG(10,("cm_connect_sam: rpccli_samr_connect failed "
2098 "for domain %s Error was %s\n",
2099 domain->name, nt_errstr(result) ));
2104 result = rpccli_samr_open_domain(conn->samr_pipe,
2106 &conn->sam_connect_handle,
2107 SEC_RIGHTS_MAXIMUM_ALLOWED,
2109 &conn->sam_domain_handle);
2113 if (!NT_STATUS_IS_OK(result)) {
2114 invalidate_cm_connection(conn);
2118 *cli = conn->samr_pipe;
2119 *sam_handle = conn->sam_domain_handle;
2120 SAFE_FREE(machine_password);
2121 SAFE_FREE(machine_account);
2125 NTSTATUS cm_connect_lsa(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
2126 struct rpc_pipe_client **cli, POLICY_HND *lsa_policy)
2128 struct winbindd_cm_conn *conn;
2129 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
2131 struct dcinfo *p_dcinfo;
2133 result = init_dc_connection(domain);
2134 if (!NT_STATUS_IS_OK(result))
2137 conn = &domain->conn;
2139 if (conn->lsa_pipe != NULL) {
2143 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
2144 if ((conn->cli->user_name[0] == '\0') ||
2145 (conn->cli->domain[0] == '\0') ||
2146 (conn_pwd[0] == '\0')) {
2147 DEBUG(10, ("cm_connect_lsa: No no user available for "
2148 "domain %s, trying schannel\n", conn->cli->domain));
2152 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
2153 * authenticated LSA pipe with sign & seal. */
2154 conn->lsa_pipe = cli_rpc_pipe_open_spnego_ntlmssp
2155 (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
2156 conn->cli->domain, conn->cli->user_name, conn_pwd, &result);
2158 if (conn->lsa_pipe == NULL) {
2159 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2160 "domain %s using NTLMSSP authenticated pipe: user "
2161 "%s\\%s. Error was %s. Trying schannel.\n",
2162 domain->name, conn->cli->domain,
2163 conn->cli->user_name, nt_errstr(result)));
2167 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2168 "NTLMSSP authenticated pipe: user %s\\%s\n",
2169 domain->name, conn->cli->domain, conn->cli->user_name ));
2171 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2172 SEC_RIGHTS_MAXIMUM_ALLOWED,
2174 if (NT_STATUS_IS_OK(result)) {
2178 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2181 cli_rpc_pipe_close(conn->lsa_pipe);
2185 /* Fall back to schannel if it's a W2K pre-SP1 box. */
2187 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
2188 /* If this call fails - conn->cli can now be NULL ! */
2189 DEBUG(10, ("cm_connect_lsa: Could not get schannel auth info "
2190 "for domain %s, trying anon\n", domain->name));
2193 conn->lsa_pipe = cli_rpc_pipe_open_schannel_with_key
2194 (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
2195 domain->name, p_dcinfo, &result);
2197 if (conn->lsa_pipe == NULL) {
2198 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
2199 "domain %s using schannel. Error was %s\n",
2200 domain->name, nt_errstr(result) ));
2203 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
2204 "schannel.\n", domain->name ));
2206 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2207 SEC_RIGHTS_MAXIMUM_ALLOWED,
2209 if (NT_STATUS_IS_OK(result)) {
2213 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
2216 cli_rpc_pipe_close(conn->lsa_pipe);
2220 conn->lsa_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_LSARPC,
2222 if (conn->lsa_pipe == NULL) {
2223 result = NT_STATUS_PIPE_NOT_AVAILABLE;
2227 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
2228 SEC_RIGHTS_MAXIMUM_ALLOWED,
2231 if (!NT_STATUS_IS_OK(result)) {
2232 invalidate_cm_connection(conn);
2236 *cli = conn->lsa_pipe;
2237 *lsa_policy = conn->lsa_policy;
2241 /****************************************************************************
2242 Open the netlogon pipe to this DC. Use schannel if specified in client conf.
2243 session key stored in conn->netlogon_pipe->dc->sess_key.
2244 ****************************************************************************/
2246 NTSTATUS cm_connect_netlogon(struct winbindd_domain *domain,
2247 struct rpc_pipe_client **cli)
2249 struct winbindd_cm_conn *conn;
2252 uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS;
2254 uint32 sec_chan_type;
2255 const char *account_name;
2256 struct rpc_pipe_client *netlogon_pipe = NULL;
2260 result = init_dc_connection(domain);
2261 if (!NT_STATUS_IS_OK(result)) {
2265 conn = &domain->conn;
2267 if (conn->netlogon_pipe != NULL) {
2268 *cli = conn->netlogon_pipe;
2269 return NT_STATUS_OK;
2272 netlogon_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_NETLOGON,
2274 if (netlogon_pipe == NULL) {
2278 if ((!IS_DC) && (!domain->primary)) {
2279 /* Clear the schannel request bit and drop down */
2280 neg_flags &= ~NETLOGON_NEG_SCHANNEL;
2284 if (lp_client_schannel() != False) {
2285 neg_flags |= NETLOGON_NEG_SCHANNEL;
2288 if (!get_trust_pw_hash(domain->name, mach_pwd, &account_name,
2291 cli_rpc_pipe_close(netlogon_pipe);
2292 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2295 result = rpccli_netlogon_setup_creds(
2297 domain->dcname, /* server name. */
2298 domain->name, /* domain name */
2299 global_myname(), /* client name */
2300 account_name, /* machine account */
2301 mach_pwd, /* machine password */
2302 sec_chan_type, /* from get_trust_pw */
2305 if (!NT_STATUS_IS_OK(result)) {
2306 cli_rpc_pipe_close(netlogon_pipe);
2310 if ((lp_client_schannel() == True) &&
2311 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2312 DEBUG(3, ("Server did not offer schannel\n"));
2313 cli_rpc_pipe_close(netlogon_pipe);
2314 return NT_STATUS_ACCESS_DENIED;
2318 if ((lp_client_schannel() == False) ||
2319 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2320 /* We're done - just keep the existing connection to NETLOGON
2322 conn->netlogon_pipe = netlogon_pipe;
2323 *cli = conn->netlogon_pipe;
2324 return NT_STATUS_OK;
2327 /* Using the credentials from the first pipe, open a signed and sealed
2328 second netlogon pipe. The session key is stored in the schannel
2329 part of the new pipe auth struct.
2332 conn->netlogon_pipe =
2333 cli_rpc_pipe_open_schannel_with_key(conn->cli,
2335 PIPE_AUTH_LEVEL_PRIVACY,
2340 /* We can now close the initial netlogon pipe. */
2341 cli_rpc_pipe_close(netlogon_pipe);
2343 if (conn->netlogon_pipe == NULL) {
2344 DEBUG(3, ("Could not open schannel'ed NETLOGON pipe. Error "
2345 "was %s\n", nt_errstr(result)));
2347 /* make sure we return something besides OK */
2348 return !NT_STATUS_IS_OK(result) ? result : NT_STATUS_PIPE_NOT_AVAILABLE;
2351 *cli = conn->netlogon_pipe;
2352 return NT_STATUS_OK;