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,
86 void *buf, size_t len, void *private_data)
88 struct winbindd_domain *domain;
89 const char *domainname = (const char *)buf;
91 if (buf == NULL || len == 0) {
95 DEBUG(5,("msg_fail_to_go_online: received for domain %s.\n", domainname));
97 for (domain = domain_list(); domain; domain = domain->next) {
98 if (domain->internal) {
102 if (strequal(domain->name, domainname)) {
103 if (domain->online) {
104 /* We're already online, ignore. */
105 DEBUG(5,("msg_fail_to_go_online: domain %s "
106 "already online.\n", domainname));
110 /* Reschedule the online check. */
111 set_domain_offline(domain);
117 /****************************************************************
118 Actually cause a reconnect from a message.
119 ****************************************************************/
121 static void msg_try_to_go_online(int msg_type, struct process_id src,
122 void *buf, size_t len, void *private_data)
124 struct winbindd_domain *domain;
125 const char *domainname = (const char *)buf;
127 if (buf == NULL || len == 0) {
131 DEBUG(5,("msg_try_to_go_online: received for domain %s.\n", domainname));
133 for (domain = domain_list(); domain; domain = domain->next) {
134 if (domain->internal) {
138 if (strequal(domain->name, domainname)) {
140 if (domain->online) {
141 /* We're already online, ignore. */
142 DEBUG(5,("msg_try_to_go_online: domain %s "
143 "already online.\n", domainname));
147 /* This call takes care of setting the online
148 flag to true if we connected, or re-adding
149 the offline handler if false. Bypasses online
150 check so always does network calls. */
152 init_dc_connection_network(domain);
158 /****************************************************************
159 Fork a child to try and contact a DC. Do this as contacting a
160 DC requires blocking lookups and we don't want to block our
162 ****************************************************************/
164 static BOOL fork_child_dc_connect(struct winbindd_domain *domain)
166 struct dc_name_ip *dcs = NULL;
168 TALLOC_CTX *mem_ctx = NULL;
170 pid_t parent_pid = sys_getpid();
177 child_pid = sys_fork();
179 if (child_pid == -1) {
180 DEBUG(0, ("fork_child_dc_connect: Could not fork: %s\n", strerror(errno)));
185 if (child_pid != 0) {
187 message_register(MSG_WINBIND_TRY_TO_GO_ONLINE,
188 msg_try_to_go_online, NULL);
189 message_register(MSG_WINBIND_FAILED_TO_GO_ONLINE,
190 msg_failed_to_go_online, NULL);
197 /* Leave messages blocked - we will never process one. */
199 /* tdb needs special fork handling */
200 if (tdb_reopen_all(1) == -1) {
201 DEBUG(0,("tdb_reopen_all failed.\n"));
205 close_conns_after_fork();
207 if (!override_logfile) {
209 pstr_sprintf(logfile, "%s/log.winbindd-dc-connect", dyn_LOGFILEBASE);
210 lp_set_logfile(logfile);
214 mem_ctx = talloc_init("fork_child_dc_connect");
216 DEBUG(0,("talloc_init failed.\n"));
220 if ((!get_dcs(mem_ctx, domain, &dcs, &num_dcs)) || (num_dcs == 0)) {
221 /* Still offline ? Can't find DC's. */
222 message_send_pid(pid_to_procid(parent_pid), MSG_WINBIND_FAILED_TO_GO_ONLINE,
224 strlen(domain->name)+1, False);
228 /* We got a DC. Send a message to our parent to get it to
229 try and do the same. */
231 message_send_pid(pid_to_procid(parent_pid), MSG_WINBIND_TRY_TO_GO_ONLINE,
233 strlen(domain->name)+1, False);
237 /****************************************************************
238 Handler triggered if we're offline to try and detect a DC.
239 ****************************************************************/
241 static void check_domain_online_handler(struct event_context *ctx,
242 struct timed_event *te,
243 const struct timeval *now,
246 struct winbindd_domain *domain =
247 (struct winbindd_domain *)private_data;
249 DEBUG(10,("check_domain_online_handler: called for domain %s\n",
252 if (domain->check_online_event) {
253 TALLOC_FREE(domain->check_online_event);
256 /* Are we still in "startup" mode ? */
258 if (domain->startup && (now->tv_sec > domain->startup_time + 30)) {
259 /* No longer in "startup" mode. */
260 DEBUG(10,("check_domain_online_handler: domain %s no longer in 'startup' mode.\n",
262 domain->startup = False;
265 /* We've been told to stay offline, so stay
268 if (get_global_winbindd_state_offline()) {
269 DEBUG(10,("check_domain_online_handler: domain %s remaining globally offline\n",
274 /* Fork a child to test if it can contact a DC.
275 If it can then send ourselves a message to
276 cause a reconnect. */
278 fork_child_dc_connect(domain);
281 /****************************************************************
282 If we're still offline setup the timeout check.
283 ****************************************************************/
285 static void calc_new_online_timeout_check(struct winbindd_domain *domain)
287 int wbc = lp_winbind_cache_time();
289 if (domain->startup) {
290 domain->check_online_timeout = 10;
291 } else if (domain->check_online_timeout < wbc) {
292 domain->check_online_timeout = wbc;
296 /****************************************************************
297 Set domain offline and also add handler to put us back online
299 ****************************************************************/
301 void set_domain_offline(struct winbindd_domain *domain)
303 DEBUG(10,("set_domain_offline: called for domain %s\n",
306 if (domain->check_online_event) {
307 TALLOC_FREE(domain->check_online_event);
310 if (domain->internal) {
311 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
316 domain->online = False;
318 /* Offline domains are always initialized. They're
319 re-initialized when they go back online. */
321 domain->initialized = True;
323 /* We only add the timeout handler that checks and
324 allows us to go back online when we've not
325 been told to remain offline. */
327 if (get_global_winbindd_state_offline()) {
328 DEBUG(10,("set_domain_offline: domain %s remaining globally offline\n",
333 /* If we're in statup mode, check again in 10 seconds, not in
334 lp_winbind_cache_time() seconds (which is 5 mins by default). */
336 calc_new_online_timeout_check(domain);
338 domain->check_online_event = event_add_timed(winbind_event_context(),
340 timeval_current_ofs(domain->check_online_timeout,0),
341 "check_domain_online_handler",
342 check_domain_online_handler,
345 /* The above *has* to succeed for winbindd to work. */
346 if (!domain->check_online_event) {
347 smb_panic("set_domain_offline: failed to add online handler.\n");
350 DEBUG(10,("set_domain_offline: added event handler for domain %s\n",
354 /****************************************************************
355 Set domain online - if allowed.
356 ****************************************************************/
358 static void set_domain_online(struct winbindd_domain *domain)
362 DEBUG(10,("set_domain_online: called for domain %s\n",
365 if (domain->internal) {
366 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
371 if (get_global_winbindd_state_offline()) {
372 DEBUG(10,("set_domain_online: domain %s remaining globally offline\n",
377 /* If we are waiting to get a krb5 ticket, trigger immediately. */
379 set_event_dispatch_time(winbind_event_context(),
380 "krb5_ticket_gain_handler", now);
382 /* Ok, we're out of any startup mode now... */
383 domain->startup = False;
385 if (domain->online == False) {
386 /* We were offline - now we're online. We default to
387 using the MS-RPC backend if we started offline,
388 and if we're going online for the first time we
389 should really re-initialize the backends and the
390 checks to see if we're talking to an AD or NT domain.
393 domain->initialized = False;
395 /* 'reconnect_methods' is the MS-RPC backend. */
396 if (domain->backend == &reconnect_methods) {
397 domain->backend = NULL;
401 /* Ensure we have no online timeout checks. */
402 domain->check_online_timeout = 0;
403 if (domain->check_online_event) {
404 TALLOC_FREE(domain->check_online_event);
407 /* Ensure we ignore any pending child messages. */
408 message_deregister(MSG_WINBIND_TRY_TO_GO_ONLINE);
409 message_deregister(MSG_WINBIND_FAILED_TO_GO_ONLINE);
411 domain->online = True;
414 /****************************************************************
415 Requested to set a domain online.
416 ****************************************************************/
418 void set_domain_online_request(struct winbindd_domain *domain)
422 DEBUG(10,("set_domain_online_request: called for domain %s\n",
425 if (get_global_winbindd_state_offline()) {
426 DEBUG(10,("set_domain_online_request: domain %s remaining globally offline\n",
431 /* We've been told it's safe to go online and
432 try and connect to a DC. But I don't believe it
433 because network manager seems to lie.
434 Wait at least 5 seconds. Heuristics suck... */
436 if (!domain->check_online_event) {
437 /* If we've come from being globally offline we
438 don't have a check online event handler set.
439 We need to add one now we're trying to go
442 DEBUG(10,("set_domain_online_request: domain %s was globally offline.\n",
445 domain->check_online_event = event_add_timed(winbind_event_context(),
447 timeval_current_ofs(5, 0),
448 "check_domain_online_handler",
449 check_domain_online_handler,
452 /* The above *has* to succeed for winbindd to work. */
453 if (!domain->check_online_event) {
454 smb_panic("set_domain_online_request: failed to add online handler.\n");
460 /* Go into "startup" mode again. */
461 domain->startup_time = tev.tv_sec;
462 domain->startup = True;
466 set_event_dispatch_time(winbind_event_context(), "check_domain_online_handler", tev);
469 /****************************************************************
470 Add -ve connection cache entries for domain and realm.
471 ****************************************************************/
473 void winbind_add_failed_connection_entry(const struct winbindd_domain *domain,
477 add_failed_connection_entry(domain->name, server, result);
478 /* If this was the saf name for the last thing we talked to,
480 saf_delete(domain->name);
481 if (*domain->alt_name) {
482 add_failed_connection_entry(domain->alt_name, server, result);
483 saf_delete(domain->alt_name);
487 /* Choose between anonymous or authenticated connections. We need to use
488 an authenticated connection if DCs have the RestrictAnonymous registry
489 entry set > 0, or the "Additional restrictions for anonymous
490 connections" set in the win2k Local Security Policy.
492 Caller to free() result in domain, username, password
495 static void cm_get_ipc_userpass(char **username, char **domain, char **password)
497 *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
498 *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
499 *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
501 if (*username && **username) {
503 if (!*domain || !**domain)
504 *domain = smb_xstrdup(lp_workgroup());
506 if (!*password || !**password)
507 *password = smb_xstrdup("");
509 DEBUG(3, ("cm_get_ipc_userpass: Retrieved auth-user from secrets.tdb [%s\\%s]\n",
510 *domain, *username));
513 DEBUG(3, ("cm_get_ipc_userpass: No auth-user defined\n"));
514 *username = smb_xstrdup("");
515 *domain = smb_xstrdup("");
516 *password = smb_xstrdup("");
520 static BOOL get_dc_name_via_netlogon(const struct winbindd_domain *domain,
521 fstring dcname, struct in_addr *dc_ip)
523 struct winbindd_domain *our_domain = NULL;
524 struct rpc_pipe_client *netlogon_pipe = NULL;
528 unsigned int orig_timeout;
532 /* Hmmmm. We can only open one connection to the NETLOGON pipe at the
539 if (domain->primary) {
543 our_domain = find_our_domain();
545 if ((mem_ctx = talloc_init("get_dc_name_via_netlogon")) == NULL) {
549 result = cm_connect_netlogon(our_domain, &netlogon_pipe);
550 if (!NT_STATUS_IS_OK(result)) {
551 talloc_destroy(mem_ctx);
555 /* This call can take a long time - allow the server to time out.
556 35 seconds should do it. */
558 orig_timeout = cli_set_timeout(netlogon_pipe->cli, 35000);
560 werr = rpccli_netlogon_getdcname(netlogon_pipe, mem_ctx, our_domain->dcname,
563 /* And restore our original timeout. */
564 cli_set_timeout(netlogon_pipe->cli, orig_timeout);
566 talloc_destroy(mem_ctx);
568 if (!W_ERROR_IS_OK(werr)) {
569 DEBUG(10, ("rpccli_netlogon_getdcname failed: %s\n",
574 /* cli_netlogon_getdcname gives us a name with \\ */
585 DEBUG(10, ("rpccli_netlogon_getdcname returned %s\n", dcname));
587 if (!resolve_name(dcname, dc_ip, 0x20)) {
594 /************************************************************************
595 Given a fd with a just-connected TCP connection to a DC, open a connection
597 ************************************************************************/
599 static NTSTATUS cm_prepare_connection(const struct winbindd_domain *domain,
601 const char *controller,
602 struct cli_state **cli,
605 char *machine_password, *machine_krb5_principal, *machine_account;
606 char *ipc_username, *ipc_domain, *ipc_password;
610 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
612 struct sockaddr peeraddr;
613 socklen_t peeraddr_len;
615 struct sockaddr_in *peeraddr_in = (struct sockaddr_in *)&peeraddr;
617 DEBUG(10,("cm_prepare_connection: connecting to DC %s for domain %s\n",
618 controller, domain->name ));
620 machine_password = secrets_fetch_machine_password(lp_workgroup(), NULL,
623 if (asprintf(&machine_account, "%s$", global_myname()) == -1) {
624 SAFE_FREE(machine_password);
625 return NT_STATUS_NO_MEMORY;
628 if (asprintf(&machine_krb5_principal, "%s$@%s", global_myname(),
630 SAFE_FREE(machine_account);
631 SAFE_FREE(machine_password);
632 return NT_STATUS_NO_MEMORY;
635 cm_get_ipc_userpass(&ipc_username, &ipc_domain, &ipc_password);
639 got_mutex = secrets_named_mutex(controller,
640 WINBIND_SERVER_MUTEX_WAIT_TIME);
643 DEBUG(0,("cm_prepare_connection: mutex grab failed for %s\n",
645 result = NT_STATUS_POSSIBLE_DEADLOCK;
649 if ((*cli = cli_initialise()) == NULL) {
650 DEBUG(1, ("Could not cli_initialize\n"));
651 result = NT_STATUS_NO_MEMORY;
655 (*cli)->timeout = 10000; /* 10 seconds */
657 fstrcpy((*cli)->desthost, controller);
658 (*cli)->use_kerberos = True;
660 peeraddr_len = sizeof(peeraddr);
662 if ((getpeername((*cli)->fd, &peeraddr, &peeraddr_len) != 0) ||
663 (peeraddr_len != sizeof(struct sockaddr_in)) ||
664 (peeraddr_in->sin_family != PF_INET))
666 DEBUG(0,("cm_prepare_connection: %s\n", strerror(errno)));
667 result = NT_STATUS_UNSUCCESSFUL;
671 if (ntohs(peeraddr_in->sin_port) == 139) {
672 struct nmb_name calling;
673 struct nmb_name called;
675 make_nmb_name(&calling, global_myname(), 0x0);
676 make_nmb_name(&called, "*SMBSERVER", 0x20);
678 if (!cli_session_request(*cli, &calling, &called)) {
679 DEBUG(8, ("cli_session_request failed for %s\n",
681 result = NT_STATUS_UNSUCCESSFUL;
686 cli_setup_signing_state(*cli, Undefined);
688 if (!cli_negprot(*cli)) {
689 DEBUG(1, ("cli_negprot failed\n"));
690 result = NT_STATUS_UNSUCCESSFUL;
694 if ((*cli)->protocol >= PROTOCOL_NT1 && (*cli)->capabilities & CAP_EXTENDED_SECURITY) {
695 ADS_STATUS ads_status;
697 if (lp_security() == SEC_ADS) {
699 /* Try a krb5 session */
701 (*cli)->use_kerberos = True;
702 DEBUG(5, ("connecting to %s from %s with kerberos principal "
703 "[%s]\n", controller, global_myname(),
704 machine_krb5_principal));
706 ads_status = cli_session_setup_spnego(*cli,
707 machine_krb5_principal,
711 if (!ADS_ERR_OK(ads_status)) {
712 DEBUG(4,("failed kerberos session setup with %s\n",
713 ads_errstr(ads_status)));
716 result = ads_ntstatus(ads_status);
717 if (NT_STATUS_IS_OK(result)) {
718 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
719 cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
720 goto session_setup_done;
724 /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the machine account. */
725 (*cli)->use_kerberos = False;
727 DEBUG(5, ("connecting to %s from %s with username "
728 "[%s]\\[%s]\n", controller, global_myname(),
729 lp_workgroup(), machine_account));
731 ads_status = cli_session_setup_spnego(*cli,
735 if (!ADS_ERR_OK(ads_status)) {
736 DEBUG(4, ("authenticated session setup failed with %s\n",
737 ads_errstr(ads_status)));
740 result = ads_ntstatus(ads_status);
741 if (NT_STATUS_IS_OK(result)) {
742 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
743 cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
744 goto session_setup_done;
748 /* Fall back to non-kerberos session setup */
750 (*cli)->use_kerberos = False;
752 if ((((*cli)->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) != 0) &&
753 (strlen(ipc_username) > 0)) {
755 /* Only try authenticated if we have a username */
757 DEBUG(5, ("connecting to %s from %s with username "
758 "[%s]\\[%s]\n", controller, global_myname(),
759 ipc_domain, ipc_username));
761 if (NT_STATUS_IS_OK(cli_session_setup(
763 ipc_password, strlen(ipc_password)+1,
764 ipc_password, strlen(ipc_password)+1,
766 /* Successful logon with given username. */
767 cli_init_creds(*cli, ipc_username, ipc_domain, ipc_password);
768 goto session_setup_done;
770 DEBUG(4, ("authenticated session setup with user %s\\%s failed.\n",
771 ipc_domain, ipc_username ));
775 /* Fall back to anonymous connection, this might fail later */
777 if (NT_STATUS_IS_OK(cli_session_setup(*cli, "", NULL, 0,
779 DEBUG(5, ("Connected anonymously\n"));
780 cli_init_creds(*cli, "", "", "");
781 goto session_setup_done;
784 result = cli_nt_error(*cli);
786 if (NT_STATUS_IS_OK(result))
787 result = NT_STATUS_UNSUCCESSFUL;
789 /* We can't session setup */
795 /* cache the server name for later connections */
797 saf_store( domain->name, (*cli)->desthost );
798 if (domain->alt_name && (*cli)->use_kerberos) {
799 saf_store( domain->alt_name, (*cli)->desthost );
802 if (!cli_send_tconX(*cli, "IPC$", "IPC", "", 0)) {
804 result = cli_nt_error(*cli);
806 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(result)));
808 if (NT_STATUS_IS_OK(result))
809 result = NT_STATUS_UNSUCCESSFUL;
814 secrets_named_mutex_release(controller);
818 /* set the domain if empty; needed for schannel connections */
819 if ( !*(*cli)->domain ) {
820 fstrcpy( (*cli)->domain, domain->name );
823 result = NT_STATUS_OK;
827 secrets_named_mutex_release(controller);
830 SAFE_FREE(machine_account);
831 SAFE_FREE(machine_password);
832 SAFE_FREE(machine_krb5_principal);
833 SAFE_FREE(ipc_username);
834 SAFE_FREE(ipc_domain);
835 SAFE_FREE(ipc_password);
837 if (!NT_STATUS_IS_OK(result)) {
838 winbind_add_failed_connection_entry(domain, controller, result);
839 if ((*cli) != NULL) {
848 static BOOL add_one_dc_unique(TALLOC_CTX *mem_ctx, const char *domain_name,
849 const char *dcname, struct in_addr ip,
850 struct dc_name_ip **dcs, int *num)
852 if (!NT_STATUS_IS_OK(check_negative_conn_cache(domain_name, dcname))) {
853 DEBUG(10, ("DC %s was in the negative conn cache\n", dcname));
857 *dcs = TALLOC_REALLOC_ARRAY(mem_ctx, *dcs, struct dc_name_ip, (*num)+1);
862 fstrcpy((*dcs)[*num].name, dcname);
863 (*dcs)[*num].ip = ip;
868 static BOOL add_sockaddr_to_array(TALLOC_CTX *mem_ctx,
869 struct in_addr ip, uint16 port,
870 struct sockaddr_in **addrs, int *num)
872 *addrs = TALLOC_REALLOC_ARRAY(mem_ctx, *addrs, struct sockaddr_in, (*num)+1);
874 if (*addrs == NULL) {
879 (*addrs)[*num].sin_family = PF_INET;
880 putip((char *)&((*addrs)[*num].sin_addr), (char *)&ip);
881 (*addrs)[*num].sin_port = htons(port);
887 static void mailslot_name(struct in_addr dc_ip, fstring name)
889 fstr_sprintf(name, "\\MAILSLOT\\NET\\GETDC%X", dc_ip.s_addr);
892 static BOOL send_getdc_request(struct in_addr dc_ip,
893 const char *domain_name,
898 fstring my_acct_name;
901 mailslot_name(dc_ip, my_mailslot);
903 memset(outbuf, '\0', sizeof(outbuf));
907 SCVAL(p, 0, SAMLOGON);
910 SCVAL(p, 0, 0); /* Count pointer ... */
913 SIVAL(p, 0, 0); /* The sender's token ... */
916 p += dos_PutUniCode(p, global_myname(), sizeof(pstring), True);
917 fstr_sprintf(my_acct_name, "%s$", global_myname());
918 p += dos_PutUniCode(p, my_acct_name, sizeof(pstring), True);
920 memcpy(p, my_mailslot, strlen(my_mailslot)+1);
921 p += strlen(my_mailslot)+1;
926 SIVAL(p, 0, sid_size(sid));
929 p = ALIGN4(p, outbuf);
931 sid_linearize(p, sid_size(sid), sid);
939 return cli_send_mailslot(False, "\\MAILSLOT\\NET\\NTLOGON", 0,
940 outbuf, PTR_DIFF(p, outbuf),
941 global_myname(), 0, domain_name, 0x1c,
945 static BOOL receive_getdc_response(struct in_addr dc_ip,
946 const char *domain_name,
949 struct packet_struct *packet;
952 fstring dcname, user, domain;
955 mailslot_name(dc_ip, my_mailslot);
957 packet = receive_unexpected(DGRAM_PACKET, 0, my_mailslot);
959 if (packet == NULL) {
960 DEBUG(5, ("Did not receive packet for %s\n", my_mailslot));
964 DEBUG(5, ("Received packet for %s\n", my_mailslot));
966 buf = packet->packet.dgram.data;
967 len = packet->packet.dgram.datasize;
970 /* 70 is a completely arbitrary value to make sure
971 the SVAL below does not read uninitialized memory */
972 DEBUG(3, ("GetDC got short response\n"));
976 /* This should be (buf-4)+SVAL(buf-4, smb_vwv12)... */
977 p = buf+SVAL(buf, smb_vwv10);
979 if (CVAL(p,0) != SAMLOGON_R) {
980 DEBUG(8, ("GetDC got invalid response type %d\n", CVAL(p, 0)));
985 pull_ucs2(buf, dcname, p, sizeof(dcname), PTR_DIFF(buf+len, p),
986 STR_TERMINATE|STR_NOALIGN);
987 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
988 pull_ucs2(buf, user, p, sizeof(dcname), PTR_DIFF(buf+len, p),
989 STR_TERMINATE|STR_NOALIGN);
990 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
991 pull_ucs2(buf, domain, p, sizeof(dcname), PTR_DIFF(buf+len, p),
992 STR_TERMINATE|STR_NOALIGN);
993 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
995 if (!strequal(domain, domain_name)) {
996 DEBUG(3, ("GetDC: Expected domain %s, got %s\n",
997 domain_name, domain));
1002 if (*p == '\\') p += 1;
1003 if (*p == '\\') p += 1;
1005 fstrcpy(dc_name, p);
1007 DEBUG(10, ("GetDC gave name %s for domain %s\n",
1013 /*******************************************************************
1014 convert an ip to a name
1015 *******************************************************************/
1017 static BOOL dcip_to_name(const struct winbindd_domain *domain, struct in_addr ip, fstring name )
1019 struct ip_service ip_list;
1025 /* For active directory servers, try to get the ldap server name.
1026 None of these failures should be considered critical for now */
1028 if (lp_security() == SEC_ADS) {
1031 ads = ads_init(domain->alt_name, domain->name, NULL);
1032 ads->auth.flags |= ADS_AUTH_NO_BIND;
1034 if (ads_try_connect( ads, inet_ntoa(ip) ) ) {
1035 /* We got a cldap packet. */
1036 fstrcpy(name, ads->config.ldap_server_name);
1037 namecache_store(name, 0x20, 1, &ip_list);
1039 DEBUG(10,("dcip_to_name: flags = 0x%x\n", (unsigned int)ads->config.flags));
1041 if (domain->primary && (ads->config.flags & ADS_KDC) && ads_closest_dc(ads)) {
1042 char *sitename = sitename_fetch(ads->config.realm);
1044 /* We're going to use this KDC for this realm/domain.
1045 If we are using sites, then force the krb5 libs
1048 create_local_private_krb5_conf_for_domain(domain->alt_name,
1053 SAFE_FREE(sitename);
1054 /* Ensure we contact this DC also. */
1055 saf_store( domain->name, name);
1056 saf_store( domain->alt_name, name);
1059 ads_destroy( &ads );
1063 ads_destroy( &ads );
1067 /* try GETDC requests next */
1069 if (send_getdc_request(ip, domain->name, &domain->sid)) {
1072 for (i=0; i<5; i++) {
1073 if (receive_getdc_response(ip, domain->name, name)) {
1074 namecache_store(name, 0x20, 1, &ip_list);
1081 /* try node status request */
1083 if ( name_status_find(domain->name, 0x1c, 0x20, ip, name) ) {
1084 namecache_store(name, 0x20, 1, &ip_list);
1090 /*******************************************************************
1091 Retreive a list of IP address for domain controllers. Fill in
1092 the dcs[] with results.
1093 *******************************************************************/
1095 static BOOL get_dcs(TALLOC_CTX *mem_ctx, const struct winbindd_domain *domain,
1096 struct dc_name_ip **dcs, int *num_dcs)
1100 struct ip_service *ip_list = NULL;
1101 int iplist_size = 0;
1104 enum security_types sec = (enum security_types)lp_security();
1106 is_our_domain = strequal(domain->name, lp_workgroup());
1109 && get_dc_name_via_netlogon(domain, dcname, &ip)
1110 && add_one_dc_unique(mem_ctx, domain->name, dcname, ip, dcs, num_dcs) )
1112 DEBUG(10, ("Retrieved DC %s at %s via netlogon\n",
1113 dcname, inet_ntoa(ip)));
1117 if (sec == SEC_ADS) {
1118 char *sitename = NULL;
1120 /* We need to make sure we know the local site before
1121 doing any DNS queries, as this will restrict the
1122 get_sorted_dc_list() call below to only fetching
1123 DNS records for the correct site. */
1125 /* Find any DC to get the site record.
1126 We deliberately don't care about the
1129 get_dc_name(domain->name, lp_realm(), dcname, &ip);
1131 sitename = sitename_fetch(lp_realm());
1134 /* Do the site-specific AD dns lookup first. */
1135 get_sorted_dc_list(domain->alt_name, sitename, &ip_list, &iplist_size, True);
1137 for ( i=0; i<iplist_size; i++ ) {
1138 add_one_dc_unique(mem_ctx, domain->name, inet_ntoa(ip_list[i].ip),
1139 ip_list[i].ip, dcs, num_dcs);
1143 SAFE_FREE(sitename);
1147 /* Now we add DCs from the main AD dns lookup. */
1148 get_sorted_dc_list(domain->alt_name, NULL, &ip_list, &iplist_size, True);
1150 for ( i=0; i<iplist_size; i++ ) {
1151 add_one_dc_unique(mem_ctx, domain->name, inet_ntoa(ip_list[i].ip),
1152 ip_list[i].ip, dcs, num_dcs);
1156 /* try standard netbios queries if no ADS */
1158 if (iplist_size==0) {
1159 get_sorted_dc_list(domain->name, NULL, &ip_list, &iplist_size, False);
1162 /* FIXME!! this is where we should re-insert the GETDC requests --jerry */
1164 /* now add to the dc array. We'll wait until the last minute
1165 to look up the name of the DC. But we fill in the char* for
1166 the ip now in to make the failed connection cache work */
1168 for ( i=0; i<iplist_size; i++ ) {
1169 add_one_dc_unique(mem_ctx, domain->name, inet_ntoa(ip_list[i].ip),
1170 ip_list[i].ip, dcs, num_dcs);
1173 SAFE_FREE( ip_list );
1178 static BOOL find_new_dc(TALLOC_CTX *mem_ctx,
1179 const struct winbindd_domain *domain,
1180 fstring dcname, struct sockaddr_in *addr, int *fd)
1182 struct dc_name_ip *dcs = NULL;
1185 const char **dcnames = NULL;
1186 int num_dcnames = 0;
1188 struct sockaddr_in *addrs = NULL;
1194 if (!get_dcs(mem_ctx, domain, &dcs, &num_dcs) || (num_dcs == 0))
1197 for (i=0; i<num_dcs; i++) {
1199 if (!add_string_to_array(mem_ctx, dcs[i].name,
1200 &dcnames, &num_dcnames)) {
1203 if (!add_sockaddr_to_array(mem_ctx, dcs[i].ip, 445,
1204 &addrs, &num_addrs)) {
1208 if (!add_string_to_array(mem_ctx, dcs[i].name,
1209 &dcnames, &num_dcnames)) {
1212 if (!add_sockaddr_to_array(mem_ctx, dcs[i].ip, 139,
1213 &addrs, &num_addrs)) {
1218 if ((num_dcnames == 0) || (num_dcnames != num_addrs))
1221 if ((addrs == NULL) || (dcnames == NULL))
1224 /* 5 second timeout. */
1225 if ( !open_any_socket_out(addrs, num_addrs, 5000, &fd_index, fd) )
1227 for (i=0; i<num_dcs; i++) {
1228 DEBUG(10, ("find_new_dc: open_any_socket_out failed for "
1229 "domain %s address %s. Error was %s\n",
1230 domain->name, inet_ntoa(dcs[i].ip), strerror(errno) ));
1231 winbind_add_failed_connection_entry(domain,
1232 dcs[i].name, NT_STATUS_UNSUCCESSFUL);
1237 *addr = addrs[fd_index];
1239 if (*dcnames[fd_index] != '\0' && !is_ipaddress(dcnames[fd_index])) {
1240 /* Ok, we've got a name for the DC */
1241 fstrcpy(dcname, dcnames[fd_index]);
1245 /* Try to figure out the name */
1246 if (dcip_to_name( domain, addr->sin_addr, dcname )) {
1250 /* We can not continue without the DC's name */
1251 winbind_add_failed_connection_entry(domain, dcs[fd_index].name,
1252 NT_STATUS_UNSUCCESSFUL);
1256 static NTSTATUS cm_open_connection(struct winbindd_domain *domain,
1257 struct winbindd_cm_conn *new_conn)
1259 TALLOC_CTX *mem_ctx;
1261 char *saf_servername = saf_fetch( domain->name );
1264 if ((mem_ctx = talloc_init("cm_open_connection")) == NULL) {
1265 SAFE_FREE(saf_servername);
1266 set_domain_offline(domain);
1267 return NT_STATUS_NO_MEMORY;
1270 /* we have to check the server affinity cache here since
1271 later we selecte a DC based on response time and not preference */
1273 /* Check the negative connection cache
1274 before talking to it. It going down may have
1275 triggered the reconnection. */
1277 if ( saf_servername && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, saf_servername))) {
1279 DEBUG(10,("cm_open_connection: saf_servername is '%s' for domain %s\n",
1280 saf_servername, domain->name ));
1282 /* convert an ip address to a name */
1283 if ( is_ipaddress( saf_servername ) ) {
1287 ip = *interpret_addr2( saf_servername );
1288 if (dcip_to_name( domain, ip, saf_name )) {
1289 fstrcpy( domain->dcname, saf_name );
1291 winbind_add_failed_connection_entry(
1292 domain, saf_servername,
1293 NT_STATUS_UNSUCCESSFUL);
1296 fstrcpy( domain->dcname, saf_servername );
1299 SAFE_FREE( saf_servername );
1302 for (retries = 0; retries < 3; retries++) {
1307 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1309 DEBUG(10,("cm_open_connection: dcname is '%s' for domain %s\n",
1310 domain->dcname, domain->name ));
1313 && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, domain->dcname))
1314 && (resolve_name(domain->dcname, &domain->dcaddr.sin_addr, 0x20)))
1316 struct sockaddr_in *addrs = NULL;
1320 if (!add_sockaddr_to_array(mem_ctx, domain->dcaddr.sin_addr, 445, &addrs, &num_addrs)) {
1321 set_domain_offline(domain);
1322 talloc_destroy(mem_ctx);
1323 return NT_STATUS_NO_MEMORY;
1325 if (!add_sockaddr_to_array(mem_ctx, domain->dcaddr.sin_addr, 139, &addrs, &num_addrs)) {
1326 set_domain_offline(domain);
1327 talloc_destroy(mem_ctx);
1328 return NT_STATUS_NO_MEMORY;
1331 /* 5 second timeout. */
1332 if (!open_any_socket_out(addrs, num_addrs, 5000, &dummy, &fd)) {
1338 && !find_new_dc(mem_ctx, domain, domain->dcname, &domain->dcaddr, &fd))
1340 /* This is the one place where we will
1341 set the global winbindd offline state
1342 to true, if a "WINBINDD_OFFLINE" entry
1343 is found in the winbindd cache. */
1344 set_global_winbindd_state_offline();
1348 new_conn->cli = NULL;
1350 result = cm_prepare_connection(domain, fd, domain->dcname,
1351 &new_conn->cli, &retry);
1357 if (NT_STATUS_IS_OK(result)) {
1358 if (domain->online == False) {
1359 /* We're changing state from offline to online. */
1360 set_global_winbindd_state_online();
1362 set_domain_online(domain);
1364 /* Ensure we setup the retry handler. */
1365 set_domain_offline(domain);
1368 talloc_destroy(mem_ctx);
1372 /* Close down all open pipes on a connection. */
1374 void invalidate_cm_connection(struct winbindd_cm_conn *conn)
1376 /* We're closing down a possibly dead
1377 connection. Don't have impossibly long (10s) timeouts. */
1380 cli_set_timeout(conn->cli, 1000); /* 1 second. */
1383 if (conn->samr_pipe != NULL) {
1384 if (!cli_rpc_pipe_close(conn->samr_pipe)) {
1385 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1387 cli_set_timeout(conn->cli, 500);
1390 conn->samr_pipe = NULL;
1393 if (conn->lsa_pipe != NULL) {
1394 if (!cli_rpc_pipe_close(conn->lsa_pipe)) {
1395 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1397 cli_set_timeout(conn->cli, 500);
1400 conn->lsa_pipe = NULL;
1403 if (conn->netlogon_pipe != NULL) {
1404 if (!cli_rpc_pipe_close(conn->netlogon_pipe)) {
1405 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1407 cli_set_timeout(conn->cli, 500);
1410 conn->netlogon_pipe = NULL;
1414 cli_shutdown(conn->cli);
1420 void close_conns_after_fork(void)
1422 struct winbindd_domain *domain;
1424 for (domain = domain_list(); domain; domain = domain->next) {
1425 if (domain->conn.cli == NULL)
1428 if (domain->conn.cli->fd == -1)
1431 close(domain->conn.cli->fd);
1432 domain->conn.cli->fd = -1;
1436 static BOOL connection_ok(struct winbindd_domain *domain)
1438 if (domain->conn.cli == NULL) {
1439 DEBUG(8, ("connection_ok: Connection to %s for domain %s has NULL "
1440 "cli!\n", domain->dcname, domain->name));
1444 if (!domain->conn.cli->initialised) {
1445 DEBUG(3, ("connection_ok: Connection to %s for domain %s was never "
1446 "initialised!\n", domain->dcname, domain->name));
1450 if (domain->conn.cli->fd == -1) {
1451 DEBUG(3, ("connection_ok: Connection to %s for domain %s has died or was "
1452 "never started (fd == -1)\n",
1453 domain->dcname, domain->name));
1457 if (domain->online == False) {
1458 DEBUG(3, ("connection_ok: Domain %s is offline\n", domain->name));
1465 /* Initialize a new connection up to the RPC BIND.
1466 Bypass online status check so always does network calls. */
1468 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain)
1472 /* Internal connections never use the network. */
1473 if (domain->internal) {
1474 domain->initialized = True;
1475 return NT_STATUS_OK;
1478 if (connection_ok(domain)) {
1479 if (!domain->initialized) {
1480 set_dc_type_and_flags(domain);
1482 return NT_STATUS_OK;
1485 invalidate_cm_connection(&domain->conn);
1487 result = cm_open_connection(domain, &domain->conn);
1489 if (NT_STATUS_IS_OK(result) && !domain->initialized) {
1490 set_dc_type_and_flags(domain);
1496 NTSTATUS init_dc_connection(struct winbindd_domain *domain)
1498 if (domain->initialized && !domain->online) {
1499 /* We check for online status elsewhere. */
1500 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1503 return init_dc_connection_network(domain);
1506 /******************************************************************************
1507 We can 'sense' certain things about the DC by it's replies to certain
1510 This tells us if this particular remote server is Active Directory, and if it
1512 ******************************************************************************/
1514 static void set_dc_type_and_flags( struct winbindd_domain *domain )
1518 TALLOC_CTX *mem_ctx = NULL;
1519 struct rpc_pipe_client *cli;
1522 char *domain_name = NULL;
1523 char *dns_name = NULL;
1524 char *forest_name = NULL;
1525 DOM_SID *dom_sid = NULL;
1529 if (!connection_ok(domain)) {
1533 DEBUG(5, ("set_dc_type_and_flags: domain %s\n", domain->name ));
1535 cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_LSARPC_DS,
1539 DEBUG(5, ("set_dc_type_and_flags: Could not bind to "
1540 "PI_LSARPC_DS on domain %s: (%s)\n",
1541 domain->name, nt_errstr(result)));
1545 result = rpccli_ds_getprimarydominfo(cli, cli->cli->mem_ctx,
1546 DsRolePrimaryDomainInfoBasic,
1548 cli_rpc_pipe_close(cli);
1550 if (!NT_STATUS_IS_OK(result)) {
1551 DEBUG(5, ("set_dc_type_and_flags: rpccli_ds_getprimarydominfo "
1552 "on domain %s failed: (%s)\n",
1553 domain->name, nt_errstr(result)));
1557 if ((ctr.basic->flags & DSROLE_PRIMARY_DS_RUNNING) &&
1558 !(ctr.basic->flags & DSROLE_PRIMARY_DS_MIXED_MODE)) {
1559 domain->native_mode = True;
1561 domain->native_mode = False;
1564 cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_LSARPC, &result);
1567 DEBUG(5, ("set_dc_type_and_flags: Could not bind to "
1568 "PI_LSARPC on domain %s: (%s)\n",
1569 domain->name, nt_errstr(result)));
1570 cli_rpc_pipe_close(cli);
1574 mem_ctx = talloc_init("set_dc_type_and_flags on domain %s\n",
1577 DEBUG(1, ("set_dc_type_and_flags: talloc_init() failed\n"));
1578 cli_rpc_pipe_close(cli);
1582 result = rpccli_lsa_open_policy2(cli, mem_ctx, True,
1583 SEC_RIGHTS_MAXIMUM_ALLOWED, &pol);
1585 if (NT_STATUS_IS_OK(result)) {
1586 /* This particular query is exactly what Win2k clients use
1587 to determine that the DC is active directory */
1588 result = rpccli_lsa_query_info_policy2(cli, mem_ctx, &pol,
1590 &dns_name, &forest_name,
1594 if (NT_STATUS_IS_OK(result)) {
1595 domain->active_directory = True;
1598 fstrcpy(domain->name, domain_name);
1601 fstrcpy(domain->alt_name, dns_name);
1604 fstrcpy(domain->forest_name, forest_name);
1607 sid_copy(&domain->sid, dom_sid);
1609 domain->active_directory = False;
1611 result = rpccli_lsa_open_policy(cli, mem_ctx, True,
1612 SEC_RIGHTS_MAXIMUM_ALLOWED,
1615 if (!NT_STATUS_IS_OK(result))
1618 result = rpccli_lsa_query_info_policy(cli, mem_ctx,
1619 &pol, 5, &domain_name,
1622 if (NT_STATUS_IS_OK(result)) {
1624 fstrcpy(domain->name, domain_name);
1627 sid_copy(&domain->sid, dom_sid);
1632 DEBUG(5, ("set_dc_type_and_flags: domain %s is %sin native mode.\n",
1633 domain->name, domain->native_mode ? "" : "NOT "));
1635 DEBUG(5,("set_dc_type_and_flags: domain %s is %srunning active directory.\n",
1636 domain->name, domain->active_directory ? "" : "NOT "));
1638 cli_rpc_pipe_close(cli);
1640 talloc_destroy(mem_ctx);
1642 domain->initialized = True;
1645 static BOOL cm_get_schannel_dcinfo(struct winbindd_domain *domain,
1646 struct dcinfo **ppdc)
1649 struct rpc_pipe_client *netlogon_pipe;
1651 if (lp_client_schannel() == False) {
1655 result = cm_connect_netlogon(domain, &netlogon_pipe);
1656 if (!NT_STATUS_IS_OK(result)) {
1660 /* Return a pointer to the struct dcinfo from the
1663 *ppdc = domain->conn.netlogon_pipe->dc;
1667 NTSTATUS cm_connect_sam(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
1668 struct rpc_pipe_client **cli, POLICY_HND *sam_handle)
1670 struct winbindd_cm_conn *conn;
1671 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1673 struct dcinfo *p_dcinfo;
1675 result = init_dc_connection(domain);
1676 if (!NT_STATUS_IS_OK(result)) {
1680 conn = &domain->conn;
1682 if (conn->samr_pipe != NULL) {
1687 * No SAMR pipe yet. Attempt to get an NTLMSSP SPNEGO authenticated
1688 * sign and sealed pipe using the machine account password by
1689 * preference. If we can't - try schannel, if that fails, try
1693 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
1694 if ((conn->cli->user_name[0] == '\0') ||
1695 (conn->cli->domain[0] == '\0') ||
1696 (conn_pwd[0] == '\0')) {
1697 DEBUG(10, ("cm_connect_sam: No no user available for "
1698 "domain %s, trying schannel\n", conn->cli->domain));
1702 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
1703 authenticated SAMR pipe with sign & seal. */
1705 cli_rpc_pipe_open_spnego_ntlmssp(conn->cli, PI_SAMR,
1706 PIPE_AUTH_LEVEL_PRIVACY,
1708 conn->cli->user_name,
1711 if (conn->samr_pipe == NULL) {
1712 DEBUG(10,("cm_connect_sam: failed to connect to SAMR "
1713 "pipe for domain %s using NTLMSSP "
1714 "authenticated pipe: user %s\\%s. Error was "
1715 "%s\n", domain->name, conn->cli->domain,
1716 conn->cli->user_name, nt_errstr(result)));
1720 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for "
1721 "domain %s using NTLMSSP authenticated "
1722 "pipe: user %s\\%s\n", domain->name,
1723 conn->cli->domain, conn->cli->user_name ));
1725 result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
1726 SEC_RIGHTS_MAXIMUM_ALLOWED,
1727 &conn->sam_connect_handle);
1728 if (NT_STATUS_IS_OK(result)) {
1731 DEBUG(10,("cm_connect_sam: ntlmssp-sealed rpccli_samr_connect "
1732 "failed for domain %s, error was %s. Trying schannel\n",
1733 domain->name, nt_errstr(result) ));
1734 cli_rpc_pipe_close(conn->samr_pipe);
1738 /* Fall back to schannel if it's a W2K pre-SP1 box. */
1740 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
1741 /* If this call fails - conn->cli can now be NULL ! */
1742 DEBUG(10, ("cm_connect_sam: Could not get schannel auth info "
1743 "for domain %s, trying anon\n", domain->name));
1746 conn->samr_pipe = cli_rpc_pipe_open_schannel_with_key
1747 (conn->cli, PI_SAMR, PIPE_AUTH_LEVEL_PRIVACY,
1748 domain->name, p_dcinfo, &result);
1750 if (conn->samr_pipe == NULL) {
1751 DEBUG(10,("cm_connect_sam: failed to connect to SAMR pipe for "
1752 "domain %s using schannel. Error was %s\n",
1753 domain->name, nt_errstr(result) ));
1756 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for domain %s using "
1757 "schannel.\n", domain->name ));
1759 result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
1760 SEC_RIGHTS_MAXIMUM_ALLOWED,
1761 &conn->sam_connect_handle);
1762 if (NT_STATUS_IS_OK(result)) {
1765 DEBUG(10,("cm_connect_sam: schannel-sealed rpccli_samr_connect failed "
1766 "for domain %s, error was %s. Trying anonymous\n",
1767 domain->name, nt_errstr(result) ));
1768 cli_rpc_pipe_close(conn->samr_pipe);
1772 /* Finally fall back to anonymous. */
1773 conn->samr_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_SAMR,
1776 if (conn->samr_pipe == NULL) {
1777 result = NT_STATUS_PIPE_NOT_AVAILABLE;
1781 result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
1782 SEC_RIGHTS_MAXIMUM_ALLOWED,
1783 &conn->sam_connect_handle);
1784 if (!NT_STATUS_IS_OK(result)) {
1785 DEBUG(10,("cm_connect_sam: rpccli_samr_connect failed "
1786 "for domain %s Error was %s\n",
1787 domain->name, nt_errstr(result) ));
1792 result = rpccli_samr_open_domain(conn->samr_pipe,
1794 &conn->sam_connect_handle,
1795 SEC_RIGHTS_MAXIMUM_ALLOWED,
1797 &conn->sam_domain_handle);
1801 if (!NT_STATUS_IS_OK(result)) {
1802 invalidate_cm_connection(conn);
1806 *cli = conn->samr_pipe;
1807 *sam_handle = conn->sam_domain_handle;
1811 NTSTATUS cm_connect_lsa(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
1812 struct rpc_pipe_client **cli, POLICY_HND *lsa_policy)
1814 struct winbindd_cm_conn *conn;
1815 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1817 struct dcinfo *p_dcinfo;
1819 result = init_dc_connection(domain);
1820 if (!NT_STATUS_IS_OK(result))
1823 conn = &domain->conn;
1825 if (conn->lsa_pipe != NULL) {
1829 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
1830 if ((conn->cli->user_name[0] == '\0') ||
1831 (conn->cli->domain[0] == '\0') ||
1832 (conn_pwd[0] == '\0')) {
1833 DEBUG(10, ("cm_connect_lsa: No no user available for "
1834 "domain %s, trying schannel\n", conn->cli->domain));
1838 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
1839 * authenticated LSA pipe with sign & seal. */
1840 conn->lsa_pipe = cli_rpc_pipe_open_spnego_ntlmssp
1841 (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
1842 conn->cli->domain, conn->cli->user_name, conn_pwd, &result);
1844 if (conn->lsa_pipe == NULL) {
1845 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
1846 "domain %s using NTLMSSP authenticated pipe: user "
1847 "%s\\%s. Error was %s. Trying schannel.\n",
1848 domain->name, conn->cli->domain,
1849 conn->cli->user_name, nt_errstr(result)));
1853 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
1854 "NTLMSSP authenticated pipe: user %s\\%s\n",
1855 domain->name, conn->cli->domain, conn->cli->user_name ));
1857 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
1858 SEC_RIGHTS_MAXIMUM_ALLOWED,
1860 if (NT_STATUS_IS_OK(result)) {
1864 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
1867 cli_rpc_pipe_close(conn->lsa_pipe);
1871 /* Fall back to schannel if it's a W2K pre-SP1 box. */
1873 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
1874 /* If this call fails - conn->cli can now be NULL ! */
1875 DEBUG(10, ("cm_connect_lsa: Could not get schannel auth info "
1876 "for domain %s, trying anon\n", domain->name));
1879 conn->lsa_pipe = cli_rpc_pipe_open_schannel_with_key
1880 (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
1881 domain->name, p_dcinfo, &result);
1883 if (conn->lsa_pipe == NULL) {
1884 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
1885 "domain %s using schannel. Error was %s\n",
1886 domain->name, nt_errstr(result) ));
1889 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
1890 "schannel.\n", domain->name ));
1892 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
1893 SEC_RIGHTS_MAXIMUM_ALLOWED,
1895 if (NT_STATUS_IS_OK(result)) {
1899 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
1902 cli_rpc_pipe_close(conn->lsa_pipe);
1906 conn->lsa_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_LSARPC,
1908 if (conn->lsa_pipe == NULL) {
1909 result = NT_STATUS_PIPE_NOT_AVAILABLE;
1913 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
1914 SEC_RIGHTS_MAXIMUM_ALLOWED,
1917 if (!NT_STATUS_IS_OK(result)) {
1918 invalidate_cm_connection(conn);
1922 *cli = conn->lsa_pipe;
1923 *lsa_policy = conn->lsa_policy;
1927 /****************************************************************************
1928 Open the netlogon pipe to this DC. Use schannel if specified in client conf.
1929 session key stored in conn->netlogon_pipe->dc->sess_key.
1930 ****************************************************************************/
1932 NTSTATUS cm_connect_netlogon(struct winbindd_domain *domain,
1933 struct rpc_pipe_client **cli)
1935 struct winbindd_cm_conn *conn;
1938 uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS;
1940 uint32 sec_chan_type;
1941 const char *account_name;
1942 struct rpc_pipe_client *netlogon_pipe = NULL;
1946 result = init_dc_connection(domain);
1947 if (!NT_STATUS_IS_OK(result)) {
1951 conn = &domain->conn;
1953 if (conn->netlogon_pipe != NULL) {
1954 *cli = conn->netlogon_pipe;
1955 return NT_STATUS_OK;
1958 if (!get_trust_pw(domain->name, mach_pwd, &sec_chan_type)) {
1959 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1962 netlogon_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_NETLOGON,
1964 if (netlogon_pipe == NULL) {
1968 if (lp_client_schannel() != False) {
1969 neg_flags |= NETLOGON_NEG_SCHANNEL;
1972 /* if we are a DC and this is a trusted domain, then we need to use our
1973 domain name in the net_req_auth2() request */
1976 && !strequal(domain->name, lp_workgroup())
1977 && lp_allow_trusted_domains() )
1979 account_name = lp_workgroup();
1981 account_name = domain->primary ?
1982 global_myname() : domain->name;
1985 if (account_name == NULL) {
1986 cli_rpc_pipe_close(netlogon_pipe);
1987 return NT_STATUS_NO_MEMORY;
1990 result = rpccli_netlogon_setup_creds(
1992 domain->dcname, /* server name. */
1993 domain->name, /* domain name */
1994 global_myname(), /* client name */
1995 account_name, /* machine account */
1996 mach_pwd, /* machine password */
1997 sec_chan_type, /* from get_trust_pw */
2000 if (!NT_STATUS_IS_OK(result)) {
2001 cli_rpc_pipe_close(netlogon_pipe);
2005 if ((lp_client_schannel() == True) &&
2006 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2007 DEBUG(3, ("Server did not offer schannel\n"));
2008 cli_rpc_pipe_close(netlogon_pipe);
2009 return NT_STATUS_ACCESS_DENIED;
2012 if ((lp_client_schannel() == False) ||
2013 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
2014 /* We're done - just keep the existing connection to NETLOGON
2016 conn->netlogon_pipe = netlogon_pipe;
2017 *cli = conn->netlogon_pipe;
2018 return NT_STATUS_OK;
2021 /* Using the credentials from the first pipe, open a signed and sealed
2022 second netlogon pipe. The session key is stored in the schannel
2023 part of the new pipe auth struct.
2026 conn->netlogon_pipe =
2027 cli_rpc_pipe_open_schannel_with_key(conn->cli,
2029 PIPE_AUTH_LEVEL_PRIVACY,
2034 /* We can now close the initial netlogon pipe. */
2035 cli_rpc_pipe_close(netlogon_pipe);
2037 if (conn->netlogon_pipe == NULL) {
2038 DEBUG(3, ("Could not open schannel'ed NETLOGON pipe. Error "
2039 "was %s\n", nt_errstr(result)));
2041 /* make sure we return something besides OK */
2042 return !NT_STATUS_IS_OK(result) ? result : NT_STATUS_PIPE_NOT_AVAILABLE;
2045 *cli = conn->netlogon_pipe;
2046 return NT_STATUS_OK;