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 2 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, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 We need to manage connections to domain controllers without having to
29 mess up the main winbindd code with other issues. The aim of the
30 connection manager is to:
32 - make connections to domain controllers and cache them
33 - re-establish connections when networks or servers go down
34 - centralise the policy on connection timeouts, domain controller
36 - manage re-entrancy for when winbindd becomes able to handle
37 multiple outstanding rpc requests
39 Why not have connection management as part of the rpc layer like tng?
40 Good question. This code may morph into libsmb/rpc_cache.c or something
41 like that but at the moment it's simply staying as part of winbind. I
42 think the TNG architecture of forcing every user of the rpc layer to use
43 the connection caching system is a bad idea. It should be an optional
44 method of using the routines.
46 The TNG design is quite good but I disagree with some aspects of the
54 - I'm pretty annoyed by all the make_nmb_name() stuff. It should be
55 moved down into another function.
57 - Take care when destroying cli_structs as they can be shared between
66 #define DBGC_CLASS DBGC_WINBIND
73 extern struct winbindd_methods reconnect_methods;
74 extern BOOL override_logfile;
76 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain);
77 static void set_dc_type_and_flags( struct winbindd_domain *domain );
78 static BOOL get_dcs(TALLOC_CTX *mem_ctx, const struct winbindd_domain *domain,
79 struct dc_name_ip **dcs, int *num_dcs);
81 /****************************************************************
82 Child failed to find DC's. Reschedule check.
83 ****************************************************************/
85 static void msg_failed_to_go_online(int msg_type, struct process_id src, void *buf, size_t len)
87 struct winbindd_domain *domain;
88 const char *domainname = (const char *)buf;
90 if (buf == NULL || len == 0) {
94 DEBUG(5,("msg_fail_to_go_online: received for domain %s.\n", domainname));
96 for (domain = domain_list(); domain; domain = domain->next) {
97 if (domain->internal) {
101 if (strequal(domain->name, domainname)) {
102 if (domain->online) {
103 /* We're already online, ignore. */
104 DEBUG(5,("msg_fail_to_go_online: domain %s "
105 "already online.\n", domainname));
109 /* Reschedule the online check. */
110 set_domain_offline(domain);
116 /****************************************************************
117 Actually cause a reconnect from a message.
118 ****************************************************************/
120 static void msg_try_to_go_online(int msg_type, struct process_id src, void *buf, size_t len)
122 struct winbindd_domain *domain;
123 const char *domainname = (const char *)buf;
125 if (buf == NULL || len == 0) {
129 DEBUG(5,("msg_try_to_go_online: received for domain %s.\n", domainname));
131 for (domain = domain_list(); domain; domain = domain->next) {
132 if (domain->internal) {
136 if (strequal(domain->name, domainname)) {
138 if (domain->online) {
139 /* We're already online, ignore. */
140 DEBUG(5,("msg_try_to_go_online: domain %s "
141 "already online.\n", domainname));
145 /* This call takes care of setting the online
146 flag to true if we connected, or re-adding
147 the offline handler if false. Bypasses online
148 check so always does network calls. */
150 init_dc_connection_network(domain);
156 /****************************************************************
157 Fork a child to try and contact a DC. Do this as contacting a
158 DC requires blocking lookups and we don't want to block our
160 ****************************************************************/
162 static BOOL fork_child_dc_connect(struct winbindd_domain *domain)
164 struct dc_name_ip *dcs = NULL;
166 TALLOC_CTX *mem_ctx = NULL;
168 pid_t parent_pid = sys_getpid();
175 child_pid = sys_fork();
177 if (child_pid == -1) {
178 DEBUG(0, ("fork_child_dc_connect: Could not fork: %s\n", strerror(errno)));
183 if (child_pid != 0) {
185 message_register(MSG_WINBIND_TRY_TO_GO_ONLINE,msg_try_to_go_online);
186 message_register(MSG_WINBIND_FAILED_TO_GO_ONLINE,msg_failed_to_go_online);
193 /* Leave messages blocked - we will never process one. */
195 /* tdb needs special fork handling */
196 if (tdb_reopen_all(1) == -1) {
197 DEBUG(0,("tdb_reopen_all failed.\n"));
201 close_conns_after_fork();
203 if (!override_logfile) {
207 mem_ctx = talloc_init("fork_child_dc_connect");
209 DEBUG(0,("talloc_init failed.\n"));
213 if ((!get_dcs(mem_ctx, domain, &dcs, &num_dcs)) || (num_dcs == 0)) {
214 /* Still offline ? Can't find DC's. */
215 message_send_pid(pid_to_procid(parent_pid), MSG_WINBIND_FAILED_TO_GO_ONLINE,
217 strlen(domain->name)+1, False);
221 /* We got a DC. Send a message to our parent to get it to
222 try and do the same. */
224 message_send_pid(pid_to_procid(parent_pid), MSG_WINBIND_TRY_TO_GO_ONLINE,
226 strlen(domain->name)+1, False);
230 /****************************************************************
231 Handler triggered if we're offline to try and detect a DC.
232 ****************************************************************/
234 static void check_domain_online_handler(struct event_context *ctx,
235 struct timed_event *te,
236 const struct timeval *now,
239 struct winbindd_domain *domain =
240 (struct winbindd_domain *)private_data;
242 DEBUG(10,("check_domain_online_handler: called for domain %s\n",
245 if (domain->check_online_event) {
246 TALLOC_FREE(domain->check_online_event);
249 /* Are we still in "startup" mode ? */
251 if (domain->startup && (now->tv_sec > domain->startup_time + 30)) {
252 /* No longer in "startup" mode. */
253 DEBUG(10,("check_domain_online_handler: domain %s no longer in 'startup' mode.\n",
255 domain->startup = False;
258 /* We've been told to stay offline, so stay
261 if (get_global_winbindd_state_offline()) {
262 DEBUG(10,("check_domain_online_handler: domain %s remaining globally offline\n",
267 /* Fork a child to test if it can contact a DC.
268 If it can then send ourselves a message to
269 cause a reconnect. */
271 fork_child_dc_connect(domain);
274 /****************************************************************
275 If we're still offline setup the timeout check.
276 ****************************************************************/
278 static void calc_new_online_timeout_check(struct winbindd_domain *domain)
280 int wbc = lp_winbind_cache_time();
282 if (domain->startup) {
283 domain->check_online_timeout = 10;
284 } else if (domain->check_online_timeout < wbc) {
285 domain->check_online_timeout = wbc;
289 /****************************************************************
290 Set domain offline and also add handler to put us back online
292 ****************************************************************/
294 void set_domain_offline(struct winbindd_domain *domain)
296 DEBUG(10,("set_domain_offline: called for domain %s\n",
299 if (domain->check_online_event) {
300 TALLOC_FREE(domain->check_online_event);
303 if (domain->internal) {
304 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
309 domain->online = False;
311 /* Offline domains are always initialized. They're
312 re-initialized when they go back online. */
314 domain->initialized = True;
316 /* We only add the timeout handler that checks and
317 allows us to go back online when we've not
318 been told to remain offline. */
320 if (get_global_winbindd_state_offline()) {
321 DEBUG(10,("set_domain_offline: domain %s remaining globally offline\n",
326 /* If we're in statup mode, check again in 10 seconds, not in
327 lp_winbind_cache_time() seconds (which is 5 mins by default). */
329 calc_new_online_timeout_check(domain);
331 domain->check_online_event = event_add_timed(winbind_event_context(), NULL,
332 timeval_current_ofs(domain->check_online_timeout,0),
333 "check_domain_online_handler",
334 check_domain_online_handler,
337 /* The above *has* to succeed for winbindd to work. */
338 if (!domain->check_online_event) {
339 smb_panic("set_domain_offline: failed to add online handler.\n");
342 DEBUG(10,("set_domain_offline: added event handler for domain %s\n",
346 /****************************************************************
347 Set domain online - if allowed.
348 ****************************************************************/
350 static void set_domain_online(struct winbindd_domain *domain)
354 DEBUG(10,("set_domain_online: called for domain %s\n",
357 if (domain->internal) {
358 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
363 if (get_global_winbindd_state_offline()) {
364 DEBUG(10,("set_domain_online: domain %s remaining globally offline\n",
369 /* If we are waiting to get a krb5 ticket, trigger immediately. */
371 set_event_dispatch_time(winbind_event_context(),
372 "krb5_ticket_gain_handler", now);
374 /* Ok, we're out of any startup mode now... */
375 domain->startup = False;
377 if (domain->online == False) {
378 /* We were offline - now we're online. We default to
379 using the MS-RPC backend if we started offline,
380 and if we're going online for the first time we
381 should really re-initialize the backends and the
382 checks to see if we're talking to an AD or NT domain.
385 domain->initialized = False;
387 /* 'reconnect_methods' is the MS-RPC backend. */
388 if (domain->backend == &reconnect_methods) {
389 domain->backend = NULL;
393 /* Ensure we have no online timeout checks. */
394 domain->check_online_timeout = 0;
395 if (domain->check_online_event) {
396 TALLOC_FREE(domain->check_online_event);
399 /* Ensure we ignore any pending child messages. */
400 message_deregister(MSG_WINBIND_TRY_TO_GO_ONLINE);
401 message_deregister(MSG_WINBIND_FAILED_TO_GO_ONLINE);
403 domain->online = True;
406 /****************************************************************
407 Requested to set a domain online.
408 ****************************************************************/
410 void set_domain_online_request(struct winbindd_domain *domain)
414 DEBUG(10,("set_domain_online_request: called for domain %s\n",
417 if (get_global_winbindd_state_offline()) {
418 DEBUG(10,("set_domain_online_request: domain %s remaining globally offline\n",
423 /* We've been told it's safe to go online and
424 try and connect to a DC. But I don't believe it
425 because network manager seems to lie.
426 Wait at least 5 seconds. Heuristics suck... */
428 if (!domain->check_online_event) {
429 /* If we've come from being globally offline we
430 don't have a check online event handler set.
431 We need to add one now we're trying to go
434 DEBUG(10,("set_domain_online_request: domain %s was globally offline.\n",
439 TALLOC_FREE(domain->check_online_event);
443 /* Go into "startup" mode again. */
444 domain->startup_time = tev.tv_sec;
445 domain->startup = True;
449 domain->check_online_event = event_add_timed(
450 winbind_event_context(), NULL, tev,
451 "check_domain_online_handler",
452 check_domain_online_handler,
455 /* The above *has* to succeed for winbindd to work. */
456 if (!domain->check_online_event) {
457 smb_panic("set_domain_online_request: failed to add online handler.\n");
461 /****************************************************************
462 Add -ve connection cache entries for domain and realm.
463 ****************************************************************/
465 void winbind_add_failed_connection_entry(const struct winbindd_domain *domain,
469 add_failed_connection_entry(domain->name, server, result);
470 /* If this was the saf name for the last thing we talked to,
472 saf_delete(domain->name);
473 if (*domain->alt_name) {
474 add_failed_connection_entry(domain->alt_name, server, result);
475 saf_delete(domain->alt_name);
479 /* Choose between anonymous or authenticated connections. We need to use
480 an authenticated connection if DCs have the RestrictAnonymous registry
481 entry set > 0, or the "Additional restrictions for anonymous
482 connections" set in the win2k Local Security Policy.
484 Caller to free() result in domain, username, password
487 static void cm_get_ipc_userpass(char **username, char **domain, char **password)
489 *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
490 *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
491 *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
493 if (*username && **username) {
495 if (!*domain || !**domain)
496 *domain = smb_xstrdup(lp_workgroup());
498 if (!*password || !**password)
499 *password = smb_xstrdup("");
501 DEBUG(3, ("cm_get_ipc_userpass: Retrieved auth-user from secrets.tdb [%s\\%s]\n",
502 *domain, *username));
505 DEBUG(3, ("cm_get_ipc_userpass: No auth-user defined\n"));
506 *username = smb_xstrdup("");
507 *domain = smb_xstrdup("");
508 *password = smb_xstrdup("");
512 static BOOL get_dc_name_via_netlogon(const struct winbindd_domain *domain,
513 fstring dcname, struct in_addr *dc_ip)
515 struct winbindd_domain *our_domain = NULL;
516 struct rpc_pipe_client *netlogon_pipe = NULL;
520 unsigned int orig_timeout;
524 /* Hmmmm. We can only open one connection to the NETLOGON pipe at the
531 if (domain->primary) {
535 our_domain = find_our_domain();
537 if ((mem_ctx = talloc_init("get_dc_name_via_netlogon")) == NULL) {
541 result = cm_connect_netlogon(our_domain, &netlogon_pipe);
542 if (!NT_STATUS_IS_OK(result)) {
543 talloc_destroy(mem_ctx);
547 /* This call can take a long time - allow the server to time out.
548 35 seconds should do it. */
550 orig_timeout = cli_set_timeout(netlogon_pipe->cli, 35000);
552 werr = rpccli_netlogon_getdcname(netlogon_pipe, mem_ctx, our_domain->dcname,
555 /* And restore our original timeout. */
556 cli_set_timeout(netlogon_pipe->cli, orig_timeout);
558 talloc_destroy(mem_ctx);
560 if (!W_ERROR_IS_OK(werr)) {
561 DEBUG(10, ("rpccli_netlogon_getdcname failed: %s\n",
566 /* cli_netlogon_getdcname gives us a name with \\ */
577 DEBUG(10, ("rpccli_netlogon_getdcname returned %s\n", dcname));
579 if (!resolve_name(dcname, dc_ip, 0x20)) {
586 /************************************************************************
587 Given a fd with a just-connected TCP connection to a DC, open a connection
589 ************************************************************************/
591 static NTSTATUS cm_prepare_connection(const struct winbindd_domain *domain,
593 const char *controller,
594 struct cli_state **cli,
597 char *machine_password, *machine_krb5_principal, *machine_account;
598 char *ipc_username, *ipc_domain, *ipc_password;
602 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
604 struct sockaddr peeraddr;
605 socklen_t peeraddr_len;
607 struct sockaddr_in *peeraddr_in = (struct sockaddr_in *)&peeraddr;
609 DEBUG(10,("cm_prepare_connection: connecting to DC %s for domain %s\n",
610 controller, domain->name ));
612 machine_password = secrets_fetch_machine_password(lp_workgroup(), NULL,
615 if (asprintf(&machine_account, "%s$", global_myname()) == -1) {
616 SAFE_FREE(machine_password);
617 return NT_STATUS_NO_MEMORY;
620 if (asprintf(&machine_krb5_principal, "%s$@%s", global_myname(),
622 SAFE_FREE(machine_account);
623 SAFE_FREE(machine_password);
624 return NT_STATUS_NO_MEMORY;
627 cm_get_ipc_userpass(&ipc_username, &ipc_domain, &ipc_password);
631 got_mutex = secrets_named_mutex(controller,
632 WINBIND_SERVER_MUTEX_WAIT_TIME);
635 DEBUG(0,("cm_prepare_connection: mutex grab failed for %s\n",
637 result = NT_STATUS_POSSIBLE_DEADLOCK;
641 if ((*cli = cli_initialise()) == NULL) {
642 DEBUG(1, ("Could not cli_initialize\n"));
643 result = NT_STATUS_NO_MEMORY;
647 (*cli)->timeout = 10000; /* 10 seconds */
649 fstrcpy((*cli)->desthost, controller);
650 (*cli)->use_kerberos = True;
652 peeraddr_len = sizeof(peeraddr);
654 if ((getpeername((*cli)->fd, &peeraddr, &peeraddr_len) != 0) ||
655 (peeraddr_len != sizeof(struct sockaddr_in)) ||
656 (peeraddr_in->sin_family != PF_INET))
658 DEBUG(0,("cm_prepare_connection: %s\n", strerror(errno)));
659 result = NT_STATUS_UNSUCCESSFUL;
663 if (ntohs(peeraddr_in->sin_port) == 139) {
664 struct nmb_name calling;
665 struct nmb_name called;
667 make_nmb_name(&calling, global_myname(), 0x0);
668 make_nmb_name(&called, "*SMBSERVER", 0x20);
670 if (!cli_session_request(*cli, &calling, &called)) {
671 DEBUG(8, ("cli_session_request failed for %s\n",
673 result = NT_STATUS_UNSUCCESSFUL;
678 cli_setup_signing_state(*cli, Undefined);
680 if (!cli_negprot(*cli)) {
681 DEBUG(1, ("cli_negprot failed\n"));
682 result = NT_STATUS_UNSUCCESSFUL;
686 if ((*cli)->protocol >= PROTOCOL_NT1 && (*cli)->capabilities & CAP_EXTENDED_SECURITY) {
687 ADS_STATUS ads_status;
689 if (lp_security() == SEC_ADS) {
691 /* Try a krb5 session */
693 (*cli)->use_kerberos = True;
694 DEBUG(5, ("connecting to %s from %s with kerberos principal "
695 "[%s]\n", controller, global_myname(),
696 machine_krb5_principal));
698 ads_status = cli_session_setup_spnego(*cli,
699 machine_krb5_principal,
703 if (!ADS_ERR_OK(ads_status)) {
704 DEBUG(4,("failed kerberos session setup with %s\n",
705 ads_errstr(ads_status)));
708 result = ads_ntstatus(ads_status);
709 if (NT_STATUS_IS_OK(result)) {
710 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
711 cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
712 goto session_setup_done;
716 /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the machine account. */
717 (*cli)->use_kerberos = False;
719 DEBUG(5, ("connecting to %s from %s with username "
720 "[%s]\\[%s]\n", controller, global_myname(),
721 lp_workgroup(), machine_account));
723 ads_status = cli_session_setup_spnego(*cli,
727 if (!ADS_ERR_OK(ads_status)) {
728 DEBUG(4, ("authenticated session setup failed with %s\n",
729 ads_errstr(ads_status)));
732 result = ads_ntstatus(ads_status);
733 if (NT_STATUS_IS_OK(result)) {
734 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
735 cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
736 goto session_setup_done;
740 /* Fall back to non-kerberos session setup */
742 (*cli)->use_kerberos = False;
744 if ((((*cli)->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) != 0) &&
745 (strlen(ipc_username) > 0)) {
747 /* Only try authenticated if we have a username */
749 DEBUG(5, ("connecting to %s from %s with username "
750 "[%s]\\[%s]\n", controller, global_myname(),
751 ipc_domain, ipc_username));
753 if (NT_STATUS_IS_OK(cli_session_setup(
755 ipc_password, strlen(ipc_password)+1,
756 ipc_password, strlen(ipc_password)+1,
758 /* Successful logon with given username. */
759 cli_init_creds(*cli, ipc_username, ipc_domain, ipc_password);
760 goto session_setup_done;
762 DEBUG(4, ("authenticated session setup with user %s\\%s failed.\n",
763 ipc_domain, ipc_username ));
767 /* Fall back to anonymous connection, this might fail later */
769 if (NT_STATUS_IS_OK(cli_session_setup(*cli, "", NULL, 0,
771 DEBUG(5, ("Connected anonymously\n"));
772 cli_init_creds(*cli, "", "", "");
773 goto session_setup_done;
776 result = cli_nt_error(*cli);
778 if (NT_STATUS_IS_OK(result))
779 result = NT_STATUS_UNSUCCESSFUL;
781 /* We can't session setup */
787 /* cache the server name for later connections */
789 saf_store( domain->name, (*cli)->desthost );
790 if (domain->alt_name && (*cli)->use_kerberos) {
791 saf_store( domain->alt_name, (*cli)->desthost );
794 if (!cli_send_tconX(*cli, "IPC$", "IPC", "", 0)) {
796 result = cli_nt_error(*cli);
798 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(result)));
800 if (NT_STATUS_IS_OK(result))
801 result = NT_STATUS_UNSUCCESSFUL;
806 secrets_named_mutex_release(controller);
810 /* set the domain if empty; needed for schannel connections */
811 if ( !*(*cli)->domain ) {
812 fstrcpy( (*cli)->domain, domain->name );
815 result = NT_STATUS_OK;
819 secrets_named_mutex_release(controller);
822 SAFE_FREE(machine_account);
823 SAFE_FREE(machine_password);
824 SAFE_FREE(machine_krb5_principal);
825 SAFE_FREE(ipc_username);
826 SAFE_FREE(ipc_domain);
827 SAFE_FREE(ipc_password);
829 if (!NT_STATUS_IS_OK(result)) {
830 winbind_add_failed_connection_entry(domain, controller, result);
831 if ((*cli) != NULL) {
840 static BOOL add_one_dc_unique(TALLOC_CTX *mem_ctx, const char *domain_name,
841 const char *dcname, struct in_addr ip,
842 struct dc_name_ip **dcs, int *num)
844 if (!NT_STATUS_IS_OK(check_negative_conn_cache(domain_name, dcname))) {
845 DEBUG(10, ("DC %s was in the negative conn cache\n", dcname));
849 *dcs = TALLOC_REALLOC_ARRAY(mem_ctx, *dcs, struct dc_name_ip, (*num)+1);
854 fstrcpy((*dcs)[*num].name, dcname);
855 (*dcs)[*num].ip = ip;
860 static BOOL add_sockaddr_to_array(TALLOC_CTX *mem_ctx,
861 struct in_addr ip, uint16 port,
862 struct sockaddr_in **addrs, int *num)
864 *addrs = TALLOC_REALLOC_ARRAY(mem_ctx, *addrs, struct sockaddr_in, (*num)+1);
866 if (*addrs == NULL) {
871 (*addrs)[*num].sin_family = PF_INET;
872 putip((char *)&((*addrs)[*num].sin_addr), (char *)&ip);
873 (*addrs)[*num].sin_port = htons(port);
879 static void mailslot_name(struct in_addr dc_ip, fstring name)
881 fstr_sprintf(name, "\\MAILSLOT\\NET\\GETDC%X", dc_ip.s_addr);
884 static BOOL send_getdc_request(struct in_addr dc_ip,
885 const char *domain_name,
890 fstring my_acct_name;
893 mailslot_name(dc_ip, my_mailslot);
895 memset(outbuf, '\0', sizeof(outbuf));
899 SCVAL(p, 0, SAMLOGON);
902 SCVAL(p, 0, 0); /* Count pointer ... */
905 SIVAL(p, 0, 0); /* The sender's token ... */
908 p += dos_PutUniCode(p, global_myname(), sizeof(pstring), True);
909 fstr_sprintf(my_acct_name, "%s$", global_myname());
910 p += dos_PutUniCode(p, my_acct_name, sizeof(pstring), True);
912 memcpy(p, my_mailslot, strlen(my_mailslot)+1);
913 p += strlen(my_mailslot)+1;
918 SIVAL(p, 0, sid_size(sid));
921 p = ALIGN4(p, outbuf);
923 sid_linearize(p, sid_size(sid), sid);
931 return cli_send_mailslot(False, "\\MAILSLOT\\NET\\NTLOGON", 0,
932 outbuf, PTR_DIFF(p, outbuf),
933 global_myname(), 0, domain_name, 0x1c,
937 static BOOL receive_getdc_response(struct in_addr dc_ip,
938 const char *domain_name,
941 struct packet_struct *packet;
944 fstring dcname, user, domain;
947 mailslot_name(dc_ip, my_mailslot);
949 packet = receive_unexpected(DGRAM_PACKET, 0, my_mailslot);
951 if (packet == NULL) {
952 DEBUG(5, ("Did not receive packet for %s\n", my_mailslot));
956 DEBUG(5, ("Received packet for %s\n", my_mailslot));
958 buf = packet->packet.dgram.data;
959 len = packet->packet.dgram.datasize;
962 /* 70 is a completely arbitrary value to make sure
963 the SVAL below does not read uninitialized memory */
964 DEBUG(3, ("GetDC got short response\n"));
968 /* This should be (buf-4)+SVAL(buf-4, smb_vwv12)... */
969 p = buf+SVAL(buf, smb_vwv10);
971 if (CVAL(p,0) != SAMLOGON_R) {
972 DEBUG(8, ("GetDC got invalid response type %d\n", CVAL(p, 0)));
977 pull_ucs2(buf, dcname, p, sizeof(dcname), PTR_DIFF(buf+len, p),
978 STR_TERMINATE|STR_NOALIGN);
979 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
980 pull_ucs2(buf, user, p, sizeof(dcname), PTR_DIFF(buf+len, p),
981 STR_TERMINATE|STR_NOALIGN);
982 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
983 pull_ucs2(buf, domain, p, sizeof(dcname), PTR_DIFF(buf+len, p),
984 STR_TERMINATE|STR_NOALIGN);
985 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
987 if (!strequal(domain, domain_name)) {
988 DEBUG(3, ("GetDC: Expected domain %s, got %s\n",
989 domain_name, domain));
994 if (*p == '\\') p += 1;
995 if (*p == '\\') p += 1;
999 DEBUG(10, ("GetDC gave name %s for domain %s\n",
1005 /*******************************************************************
1006 convert an ip to a name
1007 *******************************************************************/
1009 static BOOL dcip_to_name(const struct winbindd_domain *domain, struct in_addr ip, fstring name )
1011 struct ip_service ip_list;
1017 /* For active directory servers, try to get the ldap server name.
1018 None of these failures should be considered critical for now */
1020 if (lp_security() == SEC_ADS) {
1023 ads = ads_init(domain->alt_name, domain->name, NULL);
1024 ads->auth.flags |= ADS_AUTH_NO_BIND;
1026 if (ads_try_connect( ads, inet_ntoa(ip) ) ) {
1027 /* We got a cldap packet. */
1028 fstrcpy(name, ads->config.ldap_server_name);
1029 namecache_store(name, 0x20, 1, &ip_list);
1031 DEBUG(10,("dcip_to_name: flags = 0x%x\n", (unsigned int)ads->config.flags));
1033 if (domain->primary && (ads->config.flags & ADS_KDC) && ads_closest_dc(ads)) {
1034 char *sitename = sitename_fetch();
1036 /* We're going to use this KDC for this realm/domain.
1037 If we are using sites, then force the krb5 libs
1040 create_local_private_krb5_conf_for_domain(domain->alt_name,
1045 SAFE_FREE(sitename);
1046 /* Ensure we contact this DC also. */
1047 saf_store( domain->name, name);
1048 saf_store( domain->alt_name, name);
1051 ads_destroy( &ads );
1055 ads_destroy( &ads );
1059 /* try GETDC requests next */
1061 if (send_getdc_request(ip, domain->name, &domain->sid)) {
1064 for (i=0; i<5; i++) {
1065 if (receive_getdc_response(ip, domain->name, name)) {
1066 namecache_store(name, 0x20, 1, &ip_list);
1073 /* try node status request */
1075 if ( name_status_find(domain->name, 0x1c, 0x20, ip, name) ) {
1076 namecache_store(name, 0x20, 1, &ip_list);
1082 /*******************************************************************
1083 Retreive a list of IP address for domain controllers. Fill in
1084 the dcs[] with results.
1085 *******************************************************************/
1087 static BOOL get_dcs(TALLOC_CTX *mem_ctx, const struct winbindd_domain *domain,
1088 struct dc_name_ip **dcs, int *num_dcs)
1092 struct ip_service *ip_list = NULL;
1093 int iplist_size = 0;
1096 enum security_types sec = (enum security_types)lp_security();
1098 is_our_domain = strequal(domain->name, lp_workgroup());
1101 && get_dc_name_via_netlogon(domain, dcname, &ip)
1102 && add_one_dc_unique(mem_ctx, domain->name, dcname, ip, dcs, num_dcs) )
1104 DEBUG(10, ("Retrieved DC %s at %s via netlogon\n",
1105 dcname, inet_ntoa(ip)));
1109 if (sec == SEC_ADS) {
1110 char *sitename = NULL;
1112 /* We need to make sure we know the local site before
1113 doing any DNS queries, as this will restrict the
1114 get_sorted_dc_list() call below to only fetching
1115 DNS records for the correct site. */
1117 /* Find any DC to get the site record.
1118 We deliberately don't care about the
1121 get_dc_name(domain->name, lp_realm(), dcname, &ip);
1123 sitename = sitename_fetch();
1125 /* Do the site-specific AD dns lookup first. */
1126 get_sorted_dc_list(domain->alt_name, sitename, &ip_list, &iplist_size, True);
1128 for ( i=0; i<iplist_size; i++ ) {
1129 add_one_dc_unique(mem_ctx, domain->name, inet_ntoa(ip_list[i].ip),
1130 ip_list[i].ip, dcs, num_dcs);
1134 SAFE_FREE(sitename);
1137 /* Now we add DCs from the main AD dns lookup. */
1138 get_sorted_dc_list(domain->alt_name, NULL, &ip_list, &iplist_size, True);
1140 for ( i=0; i<iplist_size; i++ ) {
1141 add_one_dc_unique(mem_ctx, domain->name, inet_ntoa(ip_list[i].ip),
1142 ip_list[i].ip, dcs, num_dcs);
1146 /* try standard netbios queries if no ADS */
1148 if (iplist_size==0) {
1149 get_sorted_dc_list(domain->name, NULL, &ip_list, &iplist_size, False);
1152 /* FIXME!! this is where we should re-insert the GETDC requests --jerry */
1154 /* now add to the dc array. We'll wait until the last minute
1155 to look up the name of the DC. But we fill in the char* for
1156 the ip now in to make the failed connection cache work */
1158 for ( i=0; i<iplist_size; i++ ) {
1159 add_one_dc_unique(mem_ctx, domain->name, inet_ntoa(ip_list[i].ip),
1160 ip_list[i].ip, dcs, num_dcs);
1163 SAFE_FREE( ip_list );
1168 static BOOL find_new_dc(TALLOC_CTX *mem_ctx,
1169 const struct winbindd_domain *domain,
1170 fstring dcname, struct sockaddr_in *addr, int *fd)
1172 struct dc_name_ip *dcs = NULL;
1175 const char **dcnames = NULL;
1176 int num_dcnames = 0;
1178 struct sockaddr_in *addrs = NULL;
1184 if (!get_dcs(mem_ctx, domain, &dcs, &num_dcs) || (num_dcs == 0))
1187 for (i=0; i<num_dcs; i++) {
1189 if (!add_string_to_array(mem_ctx, dcs[i].name,
1190 &dcnames, &num_dcnames)) {
1193 if (!add_sockaddr_to_array(mem_ctx, dcs[i].ip, 445,
1194 &addrs, &num_addrs)) {
1198 if (!add_string_to_array(mem_ctx, dcs[i].name,
1199 &dcnames, &num_dcnames)) {
1202 if (!add_sockaddr_to_array(mem_ctx, dcs[i].ip, 139,
1203 &addrs, &num_addrs)) {
1208 if ((num_dcnames == 0) || (num_dcnames != num_addrs))
1211 if ((addrs == NULL) || (dcnames == NULL))
1214 /* 5 second timeout. */
1215 if ( !open_any_socket_out(addrs, num_addrs, 5000, &fd_index, fd) )
1217 for (i=0; i<num_dcs; i++) {
1218 DEBUG(10, ("find_new_dc: open_any_socket_out failed for "
1219 "domain %s address %s. Error was %s\n",
1220 domain->name, inet_ntoa(dcs[i].ip), strerror(errno) ));
1221 winbind_add_failed_connection_entry(domain,
1222 dcs[i].name, NT_STATUS_UNSUCCESSFUL);
1227 *addr = addrs[fd_index];
1229 if (*dcnames[fd_index] != '\0' && !is_ipaddress(dcnames[fd_index])) {
1230 /* Ok, we've got a name for the DC */
1231 fstrcpy(dcname, dcnames[fd_index]);
1235 /* Try to figure out the name */
1236 if (dcip_to_name( domain, addr->sin_addr, dcname )) {
1240 /* We can not continue without the DC's name */
1241 winbind_add_failed_connection_entry(domain, dcs[fd_index].name,
1242 NT_STATUS_UNSUCCESSFUL);
1246 static NTSTATUS cm_open_connection(struct winbindd_domain *domain,
1247 struct winbindd_cm_conn *new_conn)
1249 TALLOC_CTX *mem_ctx;
1251 char *saf_servername = saf_fetch( domain->name );
1254 if ((mem_ctx = talloc_init("cm_open_connection")) == NULL) {
1255 SAFE_FREE(saf_servername);
1256 set_domain_offline(domain);
1257 return NT_STATUS_NO_MEMORY;
1260 /* we have to check the server affinity cache here since
1261 later we selecte a DC based on response time and not preference */
1263 /* Check the negative connection cache
1264 before talking to it. It going down may have
1265 triggered the reconnection. */
1267 if ( saf_servername && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, saf_servername))) {
1269 DEBUG(10,("cm_open_connection: saf_servername is '%s' for domain %s\n",
1270 saf_servername, domain->name ));
1272 /* convert an ip address to a name */
1273 if ( is_ipaddress( saf_servername ) ) {
1277 ip = *interpret_addr2( saf_servername );
1278 if (dcip_to_name( domain, ip, saf_name )) {
1279 fstrcpy( domain->dcname, saf_name );
1281 winbind_add_failed_connection_entry(
1282 domain, saf_servername,
1283 NT_STATUS_UNSUCCESSFUL);
1286 fstrcpy( domain->dcname, saf_servername );
1289 SAFE_FREE( saf_servername );
1292 for (retries = 0; retries < 3; retries++) {
1297 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1299 DEBUG(10,("cm_open_connection: dcname is '%s' for domain %s\n",
1300 domain->dcname, domain->name ));
1303 && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, domain->dcname))
1304 && (resolve_name(domain->dcname, &domain->dcaddr.sin_addr, 0x20)))
1306 struct sockaddr_in *addrs = NULL;
1310 if (!add_sockaddr_to_array(mem_ctx, domain->dcaddr.sin_addr, 445, &addrs, &num_addrs)) {
1311 set_domain_offline(domain);
1312 talloc_destroy(mem_ctx);
1313 return NT_STATUS_NO_MEMORY;
1315 if (!add_sockaddr_to_array(mem_ctx, domain->dcaddr.sin_addr, 139, &addrs, &num_addrs)) {
1316 set_domain_offline(domain);
1317 talloc_destroy(mem_ctx);
1318 return NT_STATUS_NO_MEMORY;
1321 /* 5 second timeout. */
1322 if (!open_any_socket_out(addrs, num_addrs, 5000, &dummy, &fd)) {
1328 && !find_new_dc(mem_ctx, domain, domain->dcname, &domain->dcaddr, &fd))
1330 /* This is the one place where we will
1331 set the global winbindd offline state
1332 to true, if a "WINBINDD_OFFLINE" entry
1333 is found in the winbindd cache. */
1334 set_global_winbindd_state_offline();
1338 new_conn->cli = NULL;
1340 result = cm_prepare_connection(domain, fd, domain->dcname,
1341 &new_conn->cli, &retry);
1347 if (NT_STATUS_IS_OK(result)) {
1348 if (domain->online == False) {
1349 /* We're changing state from offline to online. */
1350 set_global_winbindd_state_online();
1352 set_domain_online(domain);
1354 /* Ensure we setup the retry handler. */
1355 set_domain_offline(domain);
1358 talloc_destroy(mem_ctx);
1362 /* Close down all open pipes on a connection. */
1364 void invalidate_cm_connection(struct winbindd_cm_conn *conn)
1366 /* We're closing down a possibly dead
1367 connection. Don't have impossibly long (10s) timeouts. */
1370 cli_set_timeout(conn->cli, 1000); /* 1 second. */
1373 if (conn->samr_pipe != NULL) {
1374 if (!cli_rpc_pipe_close(conn->samr_pipe)) {
1375 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1377 cli_set_timeout(conn->cli, 500);
1380 conn->samr_pipe = NULL;
1383 if (conn->lsa_pipe != NULL) {
1384 if (!cli_rpc_pipe_close(conn->lsa_pipe)) {
1385 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1387 cli_set_timeout(conn->cli, 500);
1390 conn->lsa_pipe = NULL;
1393 if (conn->netlogon_pipe != NULL) {
1394 if (!cli_rpc_pipe_close(conn->netlogon_pipe)) {
1395 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1397 cli_set_timeout(conn->cli, 500);
1400 conn->netlogon_pipe = NULL;
1404 cli_shutdown(conn->cli);
1410 void close_conns_after_fork(void)
1412 struct winbindd_domain *domain;
1414 for (domain = domain_list(); domain; domain = domain->next) {
1415 if (domain->conn.cli == NULL)
1418 if (domain->conn.cli->fd == -1)
1421 close(domain->conn.cli->fd);
1422 domain->conn.cli->fd = -1;
1426 static BOOL connection_ok(struct winbindd_domain *domain)
1428 if (domain->conn.cli == NULL) {
1429 DEBUG(8, ("connection_ok: Connection to %s for domain %s has NULL "
1430 "cli!\n", domain->dcname, domain->name));
1434 if (!domain->conn.cli->initialised) {
1435 DEBUG(3, ("connection_ok: Connection to %s for domain %s was never "
1436 "initialised!\n", domain->dcname, domain->name));
1440 if (domain->conn.cli->fd == -1) {
1441 DEBUG(3, ("connection_ok: Connection to %s for domain %s has died or was "
1442 "never started (fd == -1)\n",
1443 domain->dcname, domain->name));
1447 if (domain->online == False) {
1448 DEBUG(3, ("connection_ok: Domain %s is offline\n", domain->name));
1455 /* Initialize a new connection up to the RPC BIND.
1456 Bypass online status check so always does network calls. */
1458 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain)
1462 /* Internal connections never use the network. */
1463 if (domain->internal) {
1464 domain->initialized = True;
1465 return NT_STATUS_OK;
1468 if (connection_ok(domain)) {
1469 if (!domain->initialized) {
1470 set_dc_type_and_flags(domain);
1472 return NT_STATUS_OK;
1475 invalidate_cm_connection(&domain->conn);
1477 result = cm_open_connection(domain, &domain->conn);
1479 if (NT_STATUS_IS_OK(result) && !domain->initialized) {
1480 set_dc_type_and_flags(domain);
1486 NTSTATUS init_dc_connection(struct winbindd_domain *domain)
1488 if (domain->initialized && !domain->online) {
1489 /* We check for online status elsewhere. */
1490 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1493 return init_dc_connection_network(domain);
1496 /******************************************************************************
1497 We can 'sense' certain things about the DC by it's replies to certain
1500 This tells us if this particular remote server is Active Directory, and if it
1502 ******************************************************************************/
1504 static void set_dc_type_and_flags( struct winbindd_domain *domain )
1508 TALLOC_CTX *mem_ctx = NULL;
1509 struct rpc_pipe_client *cli;
1512 char *domain_name = NULL;
1513 char *dns_name = NULL;
1514 char *forest_name = NULL;
1515 DOM_SID *dom_sid = NULL;
1519 if (!connection_ok(domain)) {
1523 DEBUG(5, ("set_dc_type_and_flags: domain %s\n", domain->name ));
1525 cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_LSARPC_DS,
1529 DEBUG(5, ("set_dc_type_and_flags: Could not bind to "
1530 "PI_LSARPC_DS on domain %s: (%s)\n",
1531 domain->name, nt_errstr(result)));
1535 result = rpccli_ds_getprimarydominfo(cli, cli->cli->mem_ctx,
1536 DsRolePrimaryDomainInfoBasic,
1538 cli_rpc_pipe_close(cli);
1540 if (!NT_STATUS_IS_OK(result)) {
1541 DEBUG(5, ("set_dc_type_and_flags: rpccli_ds_getprimarydominfo "
1542 "on domain %s failed: (%s)\n",
1543 domain->name, nt_errstr(result)));
1547 if ((ctr.basic->flags & DSROLE_PRIMARY_DS_RUNNING) &&
1548 !(ctr.basic->flags & DSROLE_PRIMARY_DS_MIXED_MODE)) {
1549 domain->native_mode = True;
1551 domain->native_mode = False;
1554 cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_LSARPC, &result);
1557 DEBUG(5, ("set_dc_type_and_flags: Could not bind to "
1558 "PI_LSARPC on domain %s: (%s)\n",
1559 domain->name, nt_errstr(result)));
1560 cli_rpc_pipe_close(cli);
1564 mem_ctx = talloc_init("set_dc_type_and_flags on domain %s\n",
1567 DEBUG(1, ("set_dc_type_and_flags: talloc_init() failed\n"));
1568 cli_rpc_pipe_close(cli);
1572 result = rpccli_lsa_open_policy2(cli, mem_ctx, True,
1573 SEC_RIGHTS_MAXIMUM_ALLOWED, &pol);
1575 if (NT_STATUS_IS_OK(result)) {
1576 /* This particular query is exactly what Win2k clients use
1577 to determine that the DC is active directory */
1578 result = rpccli_lsa_query_info_policy2(cli, mem_ctx, &pol,
1580 &dns_name, &forest_name,
1584 if (NT_STATUS_IS_OK(result)) {
1585 domain->active_directory = True;
1588 fstrcpy(domain->name, domain_name);
1591 fstrcpy(domain->alt_name, dns_name);
1594 fstrcpy(domain->forest_name, forest_name);
1597 sid_copy(&domain->sid, dom_sid);
1599 domain->active_directory = False;
1601 result = rpccli_lsa_open_policy(cli, mem_ctx, True,
1602 SEC_RIGHTS_MAXIMUM_ALLOWED,
1605 if (!NT_STATUS_IS_OK(result))
1608 result = rpccli_lsa_query_info_policy(cli, mem_ctx,
1609 &pol, 5, &domain_name,
1612 if (NT_STATUS_IS_OK(result)) {
1614 fstrcpy(domain->name, domain_name);
1617 sid_copy(&domain->sid, dom_sid);
1622 DEBUG(5, ("set_dc_type_and_flags: domain %s is %sin native mode.\n",
1623 domain->name, domain->native_mode ? "" : "NOT "));
1625 DEBUG(5,("set_dc_type_and_flags: domain %s is %srunning active directory.\n",
1626 domain->name, domain->active_directory ? "" : "NOT "));
1628 cli_rpc_pipe_close(cli);
1630 talloc_destroy(mem_ctx);
1632 domain->initialized = True;
1635 static BOOL cm_get_schannel_dcinfo(struct winbindd_domain *domain,
1636 struct dcinfo **ppdc)
1639 struct rpc_pipe_client *netlogon_pipe;
1641 if (lp_client_schannel() == False) {
1645 result = cm_connect_netlogon(domain, &netlogon_pipe);
1646 if (!NT_STATUS_IS_OK(result)) {
1650 /* Return a pointer to the struct dcinfo from the
1653 *ppdc = domain->conn.netlogon_pipe->dc;
1657 NTSTATUS cm_connect_sam(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
1658 struct rpc_pipe_client **cli, POLICY_HND *sam_handle)
1660 struct winbindd_cm_conn *conn;
1661 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1663 struct dcinfo *p_dcinfo;
1665 result = init_dc_connection(domain);
1666 if (!NT_STATUS_IS_OK(result)) {
1670 conn = &domain->conn;
1672 if (conn->samr_pipe != NULL) {
1677 * No SAMR pipe yet. Attempt to get an NTLMSSP SPNEGO authenticated
1678 * sign and sealed pipe using the machine account password by
1679 * preference. If we can't - try schannel, if that fails, try
1683 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
1684 if ((conn->cli->user_name[0] == '\0') ||
1685 (conn->cli->domain[0] == '\0') ||
1686 (conn_pwd[0] == '\0')) {
1687 DEBUG(10, ("cm_connect_sam: No no user available for "
1688 "domain %s, trying schannel\n", conn->cli->domain));
1692 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
1693 authenticated SAMR pipe with sign & seal. */
1695 cli_rpc_pipe_open_spnego_ntlmssp(conn->cli, PI_SAMR,
1696 PIPE_AUTH_LEVEL_PRIVACY,
1698 conn->cli->user_name,
1701 if (conn->samr_pipe == NULL) {
1702 DEBUG(10,("cm_connect_sam: failed to connect to SAMR "
1703 "pipe for domain %s using NTLMSSP "
1704 "authenticated pipe: user %s\\%s. Error was "
1705 "%s\n", domain->name, conn->cli->domain,
1706 conn->cli->user_name, nt_errstr(result)));
1710 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for "
1711 "domain %s using NTLMSSP authenticated "
1712 "pipe: user %s\\%s\n", domain->name,
1713 conn->cli->domain, conn->cli->user_name ));
1715 result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
1716 SEC_RIGHTS_MAXIMUM_ALLOWED,
1717 &conn->sam_connect_handle);
1718 if (NT_STATUS_IS_OK(result)) {
1721 DEBUG(10,("cm_connect_sam: ntlmssp-sealed rpccli_samr_connect "
1722 "failed for domain %s, error was %s. Trying schannel\n",
1723 domain->name, nt_errstr(result) ));
1724 cli_rpc_pipe_close(conn->samr_pipe);
1728 /* Fall back to schannel if it's a W2K pre-SP1 box. */
1730 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
1731 /* If this call fails - conn->cli can now be NULL ! */
1732 DEBUG(10, ("cm_connect_sam: Could not get schannel auth info "
1733 "for domain %s, trying anon\n", domain->name));
1736 conn->samr_pipe = cli_rpc_pipe_open_schannel_with_key
1737 (conn->cli, PI_SAMR, PIPE_AUTH_LEVEL_PRIVACY,
1738 domain->name, p_dcinfo, &result);
1740 if (conn->samr_pipe == NULL) {
1741 DEBUG(10,("cm_connect_sam: failed to connect to SAMR pipe for "
1742 "domain %s using schannel. Error was %s\n",
1743 domain->name, nt_errstr(result) ));
1746 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for domain %s using "
1747 "schannel.\n", domain->name ));
1749 result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
1750 SEC_RIGHTS_MAXIMUM_ALLOWED,
1751 &conn->sam_connect_handle);
1752 if (NT_STATUS_IS_OK(result)) {
1755 DEBUG(10,("cm_connect_sam: schannel-sealed rpccli_samr_connect failed "
1756 "for domain %s, error was %s. Trying anonymous\n",
1757 domain->name, nt_errstr(result) ));
1758 cli_rpc_pipe_close(conn->samr_pipe);
1762 /* Finally fall back to anonymous. */
1763 conn->samr_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_SAMR,
1766 if (conn->samr_pipe == NULL) {
1767 result = NT_STATUS_PIPE_NOT_AVAILABLE;
1771 result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
1772 SEC_RIGHTS_MAXIMUM_ALLOWED,
1773 &conn->sam_connect_handle);
1774 if (!NT_STATUS_IS_OK(result)) {
1775 DEBUG(10,("cm_connect_sam: rpccli_samr_connect failed "
1776 "for domain %s Error was %s\n",
1777 domain->name, nt_errstr(result) ));
1782 result = rpccli_samr_open_domain(conn->samr_pipe,
1784 &conn->sam_connect_handle,
1785 SEC_RIGHTS_MAXIMUM_ALLOWED,
1787 &conn->sam_domain_handle);
1791 if (!NT_STATUS_IS_OK(result)) {
1792 invalidate_cm_connection(conn);
1796 *cli = conn->samr_pipe;
1797 *sam_handle = conn->sam_domain_handle;
1801 NTSTATUS cm_connect_lsa(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
1802 struct rpc_pipe_client **cli, POLICY_HND *lsa_policy)
1804 struct winbindd_cm_conn *conn;
1805 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1807 struct dcinfo *p_dcinfo;
1809 result = init_dc_connection(domain);
1810 if (!NT_STATUS_IS_OK(result))
1813 conn = &domain->conn;
1815 if (conn->lsa_pipe != NULL) {
1819 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
1820 if ((conn->cli->user_name[0] == '\0') ||
1821 (conn->cli->domain[0] == '\0') ||
1822 (conn_pwd[0] == '\0')) {
1823 DEBUG(10, ("cm_connect_lsa: No no user available for "
1824 "domain %s, trying schannel\n", conn->cli->domain));
1828 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
1829 * authenticated LSA pipe with sign & seal. */
1830 conn->lsa_pipe = cli_rpc_pipe_open_spnego_ntlmssp
1831 (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
1832 conn->cli->domain, conn->cli->user_name, conn_pwd, &result);
1834 if (conn->lsa_pipe == NULL) {
1835 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
1836 "domain %s using NTLMSSP authenticated pipe: user "
1837 "%s\\%s. Error was %s. Trying schannel.\n",
1838 domain->name, conn->cli->domain,
1839 conn->cli->user_name, nt_errstr(result)));
1843 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
1844 "NTLMSSP authenticated pipe: user %s\\%s\n",
1845 domain->name, conn->cli->domain, conn->cli->user_name ));
1847 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
1848 SEC_RIGHTS_MAXIMUM_ALLOWED,
1850 if (NT_STATUS_IS_OK(result)) {
1854 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
1857 cli_rpc_pipe_close(conn->lsa_pipe);
1861 /* Fall back to schannel if it's a W2K pre-SP1 box. */
1863 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
1864 /* If this call fails - conn->cli can now be NULL ! */
1865 DEBUG(10, ("cm_connect_lsa: Could not get schannel auth info "
1866 "for domain %s, trying anon\n", domain->name));
1869 conn->lsa_pipe = cli_rpc_pipe_open_schannel_with_key
1870 (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
1871 domain->name, p_dcinfo, &result);
1873 if (conn->lsa_pipe == NULL) {
1874 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
1875 "domain %s using schannel. Error was %s\n",
1876 domain->name, nt_errstr(result) ));
1879 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
1880 "schannel.\n", domain->name ));
1882 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
1883 SEC_RIGHTS_MAXIMUM_ALLOWED,
1885 if (NT_STATUS_IS_OK(result)) {
1889 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
1892 cli_rpc_pipe_close(conn->lsa_pipe);
1896 conn->lsa_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_LSARPC,
1898 if (conn->lsa_pipe == NULL) {
1899 result = NT_STATUS_PIPE_NOT_AVAILABLE;
1903 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
1904 SEC_RIGHTS_MAXIMUM_ALLOWED,
1907 if (!NT_STATUS_IS_OK(result)) {
1908 invalidate_cm_connection(conn);
1912 *cli = conn->lsa_pipe;
1913 *lsa_policy = conn->lsa_policy;
1917 /****************************************************************************
1918 Open the netlogon pipe to this DC. Use schannel if specified in client conf.
1919 session key stored in conn->netlogon_pipe->dc->sess_key.
1920 ****************************************************************************/
1922 NTSTATUS cm_connect_netlogon(struct winbindd_domain *domain,
1923 struct rpc_pipe_client **cli)
1925 struct winbindd_cm_conn *conn;
1928 uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS;
1930 uint32 sec_chan_type;
1931 const char *account_name;
1932 struct rpc_pipe_client *netlogon_pipe = NULL;
1936 result = init_dc_connection(domain);
1937 if (!NT_STATUS_IS_OK(result)) {
1941 conn = &domain->conn;
1943 if (conn->netlogon_pipe != NULL) {
1944 *cli = conn->netlogon_pipe;
1945 return NT_STATUS_OK;
1948 if (!get_trust_pw(domain->name, mach_pwd, &sec_chan_type)) {
1949 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1952 netlogon_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_NETLOGON,
1954 if (netlogon_pipe == NULL) {
1958 if (lp_client_schannel() != False) {
1959 neg_flags |= NETLOGON_NEG_SCHANNEL;
1962 /* if we are a DC and this is a trusted domain, then we need to use our
1963 domain name in the net_req_auth2() request */
1966 && !strequal(domain->name, lp_workgroup())
1967 && lp_allow_trusted_domains() )
1969 account_name = lp_workgroup();
1971 account_name = domain->primary ?
1972 global_myname() : domain->name;
1975 if (account_name == NULL) {
1976 cli_rpc_pipe_close(netlogon_pipe);
1977 return NT_STATUS_NO_MEMORY;
1980 result = rpccli_netlogon_setup_creds(
1982 domain->dcname, /* server name. */
1983 domain->name, /* domain name */
1984 global_myname(), /* client name */
1985 account_name, /* machine account */
1986 mach_pwd, /* machine password */
1987 sec_chan_type, /* from get_trust_pw */
1990 if (!NT_STATUS_IS_OK(result)) {
1991 cli_rpc_pipe_close(netlogon_pipe);
1995 if ((lp_client_schannel() == True) &&
1996 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
1997 DEBUG(3, ("Server did not offer schannel\n"));
1998 cli_rpc_pipe_close(netlogon_pipe);
1999 return NT_STATUS_ACCESS_DENIED;
2002 if ((lp_client_schannel() == False) ||
2003 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2004 /* We're done - just keep the existing connection to NETLOGON
2006 conn->netlogon_pipe = netlogon_pipe;
2007 *cli = conn->netlogon_pipe;
2008 return NT_STATUS_OK;
2011 /* Using the credentials from the first pipe, open a signed and sealed
2012 second netlogon pipe. The session key is stored in the schannel
2013 part of the new pipe auth struct.
2016 conn->netlogon_pipe =
2017 cli_rpc_pipe_open_schannel_with_key(conn->cli,
2019 PIPE_AUTH_LEVEL_PRIVACY,
2024 /* We can now close the initial netlogon pipe. */
2025 cli_rpc_pipe_close(netlogon_pipe);
2027 if (conn->netlogon_pipe == NULL) {
2028 DEBUG(3, ("Could not open schannel'ed NETLOGON pipe. Error "
2029 "was %s\n", nt_errstr(result)));
2031 /* make sure we return something besides OK */
2032 return !NT_STATUS_IS_OK(result) ? result : NT_STATUS_PIPE_NOT_AVAILABLE;
2035 *cli = conn->netlogon_pipe;
2036 return NT_STATUS_OK;