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 timed_event *te,
235 const struct timeval *now,
238 struct winbindd_domain *domain =
239 (struct winbindd_domain *)private_data;
241 DEBUG(10,("check_domain_online_handler: called for domain %s\n",
244 if (domain->check_online_event) {
245 TALLOC_FREE(domain->check_online_event);
248 /* Are we still in "startup" mode ? */
250 if (domain->startup && (now->tv_sec > domain->startup_time + 30)) {
251 /* No longer in "startup" mode. */
252 DEBUG(10,("check_domain_online_handler: domain %s no longer in 'startup' mode.\n",
254 domain->startup = False;
257 /* We've been told to stay offline, so stay
260 if (get_global_winbindd_state_offline()) {
261 DEBUG(10,("check_domain_online_handler: domain %s remaining globally offline\n",
266 /* Fork a child to test if it can contact a DC.
267 If it can then send ourselves a message to
268 cause a reconnect. */
270 fork_child_dc_connect(domain);
273 /****************************************************************
274 If we're still offline setup the timeout check.
275 ****************************************************************/
277 static void calc_new_online_timeout_check(struct winbindd_domain *domain)
279 int wbc = lp_winbind_cache_time();
281 if (domain->startup) {
282 domain->check_online_timeout = 10;
283 } else if (domain->check_online_timeout < wbc) {
284 domain->check_online_timeout = wbc;
288 /****************************************************************
289 Set domain offline and also add handler to put us back online
291 ****************************************************************/
293 void set_domain_offline(struct winbindd_domain *domain)
295 DEBUG(10,("set_domain_offline: called for domain %s\n",
298 if (domain->check_online_event) {
299 TALLOC_FREE(domain->check_online_event);
302 if (domain->internal) {
303 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
308 domain->online = False;
310 /* Offline domains are always initialized. They're
311 re-initialized when they go back online. */
313 domain->initialized = True;
315 /* We only add the timeout handler that checks and
316 allows us to go back online when we've not
317 been told to remain offline. */
319 if (get_global_winbindd_state_offline()) {
320 DEBUG(10,("set_domain_offline: domain %s remaining globally offline\n",
325 /* If we're in statup mode, check again in 10 seconds, not in
326 lp_winbind_cache_time() seconds (which is 5 mins by default). */
328 calc_new_online_timeout_check(domain);
330 domain->check_online_event = add_timed_event( NULL,
331 timeval_current_ofs(domain->check_online_timeout,0),
332 "check_domain_online_handler",
333 check_domain_online_handler,
336 /* The above *has* to succeed for winbindd to work. */
337 if (!domain->check_online_event) {
338 smb_panic("set_domain_offline: failed to add online handler.\n");
341 DEBUG(10,("set_domain_offline: added event handler for domain %s\n",
345 /****************************************************************
346 Set domain online - if allowed.
347 ****************************************************************/
349 static void set_domain_online(struct winbindd_domain *domain)
353 DEBUG(10,("set_domain_online: called for domain %s\n",
356 if (domain->internal) {
357 DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
362 if (get_global_winbindd_state_offline()) {
363 DEBUG(10,("set_domain_online: domain %s remaining globally offline\n",
368 /* If we are waiting to get a krb5 ticket, trigger immediately. */
370 set_event_dispatch_time("krb5_ticket_gain_handler", now);
372 /* Ok, we're out of any startup mode now... */
373 domain->startup = False;
375 if (domain->online == False) {
376 /* We were offline - now we're online. We default to
377 using the MS-RPC backend if we started offline,
378 and if we're going online for the first time we
379 should really re-initialize the backends and the
380 checks to see if we're talking to an AD or NT domain.
383 domain->initialized = False;
385 /* 'reconnect_methods' is the MS-RPC backend. */
386 if (domain->backend == &reconnect_methods) {
387 domain->backend = NULL;
391 /* Ensure we have no online timeout checks. */
392 domain->check_online_timeout = 0;
393 if (domain->check_online_event) {
394 TALLOC_FREE(domain->check_online_event);
397 /* Ensure we ignore any pending child messages. */
398 message_deregister(MSG_WINBIND_TRY_TO_GO_ONLINE);
399 message_deregister(MSG_WINBIND_FAILED_TO_GO_ONLINE);
401 domain->online = True;
404 /****************************************************************
405 Requested to set a domain online.
406 ****************************************************************/
408 void set_domain_online_request(struct winbindd_domain *domain)
412 DEBUG(10,("set_domain_online_request: called for domain %s\n",
415 if (get_global_winbindd_state_offline()) {
416 DEBUG(10,("set_domain_online_request: domain %s remaining globally offline\n",
421 /* We've been told it's safe to go online and
422 try and connect to a DC. But I don't believe it
423 because network manager seems to lie.
424 Wait at least 5 seconds. Heuristics suck... */
426 if (!domain->check_online_event) {
427 /* If we've come from being globally offline we
428 don't have a check online event handler set.
429 We need to add one now we're trying to go
432 DEBUG(10,("set_domain_online_request: domain %s was globally offline.\n",
435 domain->check_online_event = add_timed_event( NULL,
436 timeval_current_ofs(5, 0),
437 "check_domain_online_handler",
438 check_domain_online_handler,
441 /* The above *has* to succeed for winbindd to work. */
442 if (!domain->check_online_event) {
443 smb_panic("set_domain_online_request: failed to add online handler.\n");
449 /* Go into "startup" mode again. */
450 domain->startup_time = tev.tv_sec;
451 domain->startup = True;
454 set_event_dispatch_time("check_domain_online_handler", tev);
457 /****************************************************************
458 Add -ve connection cache entries for domain and realm.
459 ****************************************************************/
461 void winbind_add_failed_connection_entry(const struct winbindd_domain *domain,
465 add_failed_connection_entry(domain->name, server, result);
466 /* If this was the saf name for the last thing we talked to,
468 saf_delete(domain->name);
469 if (*domain->alt_name) {
470 add_failed_connection_entry(domain->alt_name, server, result);
471 saf_delete(domain->alt_name);
475 /* Choose between anonymous or authenticated connections. We need to use
476 an authenticated connection if DCs have the RestrictAnonymous registry
477 entry set > 0, or the "Additional restrictions for anonymous
478 connections" set in the win2k Local Security Policy.
480 Caller to free() result in domain, username, password
483 static void cm_get_ipc_userpass(char **username, char **domain, char **password)
485 *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
486 *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
487 *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
489 if (*username && **username) {
491 if (!*domain || !**domain)
492 *domain = smb_xstrdup(lp_workgroup());
494 if (!*password || !**password)
495 *password = smb_xstrdup("");
497 DEBUG(3, ("cm_get_ipc_userpass: Retrieved auth-user from secrets.tdb [%s\\%s]\n",
498 *domain, *username));
501 DEBUG(3, ("cm_get_ipc_userpass: No auth-user defined\n"));
502 *username = smb_xstrdup("");
503 *domain = smb_xstrdup("");
504 *password = smb_xstrdup("");
508 static BOOL get_dc_name_via_netlogon(const struct winbindd_domain *domain,
509 fstring dcname, struct in_addr *dc_ip)
511 struct winbindd_domain *our_domain = NULL;
512 struct rpc_pipe_client *netlogon_pipe = NULL;
516 unsigned int orig_timeout;
520 /* Hmmmm. We can only open one connection to the NETLOGON pipe at the
527 if (domain->primary) {
531 our_domain = find_our_domain();
533 if ((mem_ctx = talloc_init("get_dc_name_via_netlogon")) == NULL) {
537 result = cm_connect_netlogon(our_domain, &netlogon_pipe);
538 if (!NT_STATUS_IS_OK(result)) {
539 talloc_destroy(mem_ctx);
543 /* This call can take a long time - allow the server to time out.
544 35 seconds should do it. */
546 orig_timeout = cli_set_timeout(netlogon_pipe->cli, 35000);
548 werr = rpccli_netlogon_getdcname(netlogon_pipe, mem_ctx, our_domain->dcname,
551 /* And restore our original timeout. */
552 cli_set_timeout(netlogon_pipe->cli, orig_timeout);
554 talloc_destroy(mem_ctx);
556 if (!W_ERROR_IS_OK(werr)) {
557 DEBUG(10, ("rpccli_netlogon_getdcname failed: %s\n",
562 /* cli_netlogon_getdcname gives us a name with \\ */
573 DEBUG(10, ("rpccli_netlogon_getdcname returned %s\n", dcname));
575 if (!resolve_name(dcname, dc_ip, 0x20)) {
582 /************************************************************************
583 Given a fd with a just-connected TCP connection to a DC, open a connection
585 ************************************************************************/
587 static NTSTATUS cm_prepare_connection(const struct winbindd_domain *domain,
589 const char *controller,
590 struct cli_state **cli,
593 char *machine_password, *machine_krb5_principal, *machine_account;
594 char *ipc_username, *ipc_domain, *ipc_password;
598 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
600 struct sockaddr peeraddr;
601 socklen_t peeraddr_len;
603 struct sockaddr_in *peeraddr_in = (struct sockaddr_in *)&peeraddr;
605 DEBUG(10,("cm_prepare_connection: connecting to DC %s for domain %s\n",
606 controller, domain->name ));
608 machine_password = secrets_fetch_machine_password(lp_workgroup(), NULL,
611 if (asprintf(&machine_account, "%s$", global_myname()) == -1) {
612 SAFE_FREE(machine_password);
613 return NT_STATUS_NO_MEMORY;
616 if (asprintf(&machine_krb5_principal, "%s$@%s", global_myname(),
618 SAFE_FREE(machine_account);
619 SAFE_FREE(machine_password);
620 return NT_STATUS_NO_MEMORY;
623 cm_get_ipc_userpass(&ipc_username, &ipc_domain, &ipc_password);
627 got_mutex = secrets_named_mutex(controller,
628 WINBIND_SERVER_MUTEX_WAIT_TIME);
631 DEBUG(0,("cm_prepare_connection: mutex grab failed for %s\n",
633 result = NT_STATUS_POSSIBLE_DEADLOCK;
637 if ((*cli = cli_initialise()) == NULL) {
638 DEBUG(1, ("Could not cli_initialize\n"));
639 result = NT_STATUS_NO_MEMORY;
643 (*cli)->timeout = 10000; /* 10 seconds */
645 fstrcpy((*cli)->desthost, controller);
646 (*cli)->use_kerberos = True;
648 peeraddr_len = sizeof(peeraddr);
650 if ((getpeername((*cli)->fd, &peeraddr, &peeraddr_len) != 0) ||
651 (peeraddr_len != sizeof(struct sockaddr_in)) ||
652 (peeraddr_in->sin_family != PF_INET))
654 DEBUG(0,("cm_prepare_connection: %s\n", strerror(errno)));
655 result = NT_STATUS_UNSUCCESSFUL;
659 if (ntohs(peeraddr_in->sin_port) == 139) {
660 struct nmb_name calling;
661 struct nmb_name called;
663 make_nmb_name(&calling, global_myname(), 0x0);
664 make_nmb_name(&called, "*SMBSERVER", 0x20);
666 if (!cli_session_request(*cli, &calling, &called)) {
667 DEBUG(8, ("cli_session_request failed for %s\n",
669 result = NT_STATUS_UNSUCCESSFUL;
674 cli_setup_signing_state(*cli, Undefined);
676 if (!cli_negprot(*cli)) {
677 DEBUG(1, ("cli_negprot failed\n"));
678 result = NT_STATUS_UNSUCCESSFUL;
682 if ((*cli)->protocol >= PROTOCOL_NT1 && (*cli)->capabilities & CAP_EXTENDED_SECURITY) {
683 ADS_STATUS ads_status;
685 if (lp_security() == SEC_ADS) {
687 /* Try a krb5 session */
689 (*cli)->use_kerberos = True;
690 DEBUG(5, ("connecting to %s from %s with kerberos principal "
691 "[%s]\n", controller, global_myname(),
692 machine_krb5_principal));
694 ads_status = cli_session_setup_spnego(*cli,
695 machine_krb5_principal,
699 if (!ADS_ERR_OK(ads_status)) {
700 DEBUG(4,("failed kerberos session setup with %s\n",
701 ads_errstr(ads_status)));
704 result = ads_ntstatus(ads_status);
705 if (NT_STATUS_IS_OK(result)) {
706 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
707 cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
708 goto session_setup_done;
712 /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the machine account. */
713 (*cli)->use_kerberos = False;
715 DEBUG(5, ("connecting to %s from %s with username "
716 "[%s]\\[%s]\n", controller, global_myname(),
717 lp_workgroup(), machine_account));
719 ads_status = cli_session_setup_spnego(*cli,
723 if (!ADS_ERR_OK(ads_status)) {
724 DEBUG(4, ("authenticated session setup failed with %s\n",
725 ads_errstr(ads_status)));
728 result = ads_ntstatus(ads_status);
729 if (NT_STATUS_IS_OK(result)) {
730 /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
731 cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
732 goto session_setup_done;
736 /* Fall back to non-kerberos session setup */
738 (*cli)->use_kerberos = False;
740 if ((((*cli)->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) != 0) &&
741 (strlen(ipc_username) > 0)) {
743 /* Only try authenticated if we have a username */
745 DEBUG(5, ("connecting to %s from %s with username "
746 "[%s]\\[%s]\n", controller, global_myname(),
747 ipc_domain, ipc_username));
749 if (NT_STATUS_IS_OK(cli_session_setup(
751 ipc_password, strlen(ipc_password)+1,
752 ipc_password, strlen(ipc_password)+1,
754 /* Successful logon with given username. */
755 cli_init_creds(*cli, ipc_username, ipc_domain, ipc_password);
756 goto session_setup_done;
758 DEBUG(4, ("authenticated session setup with user %s\\%s failed.\n",
759 ipc_domain, ipc_username ));
763 /* Fall back to anonymous connection, this might fail later */
765 if (NT_STATUS_IS_OK(cli_session_setup(*cli, "", NULL, 0,
767 DEBUG(5, ("Connected anonymously\n"));
768 cli_init_creds(*cli, "", "", "");
769 goto session_setup_done;
772 result = cli_nt_error(*cli);
774 if (NT_STATUS_IS_OK(result))
775 result = NT_STATUS_UNSUCCESSFUL;
777 /* We can't session setup */
783 /* cache the server name for later connections */
785 saf_store( domain->name, (*cli)->desthost );
786 if (domain->alt_name && (*cli)->use_kerberos) {
787 saf_store( domain->alt_name, (*cli)->desthost );
790 if (!cli_send_tconX(*cli, "IPC$", "IPC", "", 0)) {
792 result = cli_nt_error(*cli);
794 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(result)));
796 if (NT_STATUS_IS_OK(result))
797 result = NT_STATUS_UNSUCCESSFUL;
802 secrets_named_mutex_release(controller);
806 /* set the domain if empty; needed for schannel connections */
807 if ( !*(*cli)->domain ) {
808 fstrcpy( (*cli)->domain, domain->name );
811 result = NT_STATUS_OK;
815 secrets_named_mutex_release(controller);
818 SAFE_FREE(machine_account);
819 SAFE_FREE(machine_password);
820 SAFE_FREE(machine_krb5_principal);
821 SAFE_FREE(ipc_username);
822 SAFE_FREE(ipc_domain);
823 SAFE_FREE(ipc_password);
825 if (!NT_STATUS_IS_OK(result)) {
826 winbind_add_failed_connection_entry(domain, controller, result);
827 if ((*cli) != NULL) {
836 static BOOL add_one_dc_unique(TALLOC_CTX *mem_ctx, const char *domain_name,
837 const char *dcname, struct in_addr ip,
838 struct dc_name_ip **dcs, int *num)
840 if (!NT_STATUS_IS_OK(check_negative_conn_cache(domain_name, dcname))) {
841 DEBUG(10, ("DC %s was in the negative conn cache\n", dcname));
845 *dcs = TALLOC_REALLOC_ARRAY(mem_ctx, *dcs, struct dc_name_ip, (*num)+1);
850 fstrcpy((*dcs)[*num].name, dcname);
851 (*dcs)[*num].ip = ip;
856 static BOOL add_sockaddr_to_array(TALLOC_CTX *mem_ctx,
857 struct in_addr ip, uint16 port,
858 struct sockaddr_in **addrs, int *num)
860 *addrs = TALLOC_REALLOC_ARRAY(mem_ctx, *addrs, struct sockaddr_in, (*num)+1);
862 if (*addrs == NULL) {
867 (*addrs)[*num].sin_family = PF_INET;
868 putip((char *)&((*addrs)[*num].sin_addr), (char *)&ip);
869 (*addrs)[*num].sin_port = htons(port);
875 static void mailslot_name(struct in_addr dc_ip, fstring name)
877 fstr_sprintf(name, "\\MAILSLOT\\NET\\GETDC%X", dc_ip.s_addr);
880 static BOOL send_getdc_request(struct in_addr dc_ip,
881 const char *domain_name,
886 fstring my_acct_name;
889 mailslot_name(dc_ip, my_mailslot);
891 memset(outbuf, '\0', sizeof(outbuf));
895 SCVAL(p, 0, SAMLOGON);
898 SCVAL(p, 0, 0); /* Count pointer ... */
901 SIVAL(p, 0, 0); /* The sender's token ... */
904 p += dos_PutUniCode(p, global_myname(), sizeof(pstring), True);
905 fstr_sprintf(my_acct_name, "%s$", global_myname());
906 p += dos_PutUniCode(p, my_acct_name, sizeof(pstring), True);
908 memcpy(p, my_mailslot, strlen(my_mailslot)+1);
909 p += strlen(my_mailslot)+1;
914 SIVAL(p, 0, sid_size(sid));
917 p = ALIGN4(p, outbuf);
919 sid_linearize(p, sid_size(sid), sid);
927 return cli_send_mailslot(False, "\\MAILSLOT\\NET\\NTLOGON", 0,
928 outbuf, PTR_DIFF(p, outbuf),
929 global_myname(), 0, domain_name, 0x1c,
933 static BOOL receive_getdc_response(struct in_addr dc_ip,
934 const char *domain_name,
937 struct packet_struct *packet;
940 fstring dcname, user, domain;
943 mailslot_name(dc_ip, my_mailslot);
945 packet = receive_unexpected(DGRAM_PACKET, 0, my_mailslot);
947 if (packet == NULL) {
948 DEBUG(5, ("Did not receive packet for %s\n", my_mailslot));
952 DEBUG(5, ("Received packet for %s\n", my_mailslot));
954 buf = packet->packet.dgram.data;
955 len = packet->packet.dgram.datasize;
958 /* 70 is a completely arbitrary value to make sure
959 the SVAL below does not read uninitialized memory */
960 DEBUG(3, ("GetDC got short response\n"));
964 /* This should be (buf-4)+SVAL(buf-4, smb_vwv12)... */
965 p = buf+SVAL(buf, smb_vwv10);
967 if (CVAL(p,0) != SAMLOGON_R) {
968 DEBUG(8, ("GetDC got invalid response type %d\n", CVAL(p, 0)));
973 pull_ucs2(buf, dcname, p, sizeof(dcname), PTR_DIFF(buf+len, p),
974 STR_TERMINATE|STR_NOALIGN);
975 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
976 pull_ucs2(buf, user, p, sizeof(dcname), PTR_DIFF(buf+len, p),
977 STR_TERMINATE|STR_NOALIGN);
978 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
979 pull_ucs2(buf, domain, p, sizeof(dcname), PTR_DIFF(buf+len, p),
980 STR_TERMINATE|STR_NOALIGN);
981 p = skip_unibuf(p, PTR_DIFF(buf+len, p));
983 if (!strequal(domain, domain_name)) {
984 DEBUG(3, ("GetDC: Expected domain %s, got %s\n",
985 domain_name, domain));
990 if (*p == '\\') p += 1;
991 if (*p == '\\') p += 1;
995 DEBUG(10, ("GetDC gave name %s for domain %s\n",
1001 /*******************************************************************
1002 convert an ip to a name
1003 *******************************************************************/
1005 static BOOL dcip_to_name(const struct winbindd_domain *domain, struct in_addr ip, fstring name )
1007 struct ip_service ip_list;
1013 /* For active directory servers, try to get the ldap server name.
1014 None of these failures should be considered critical for now */
1016 if (lp_security() == SEC_ADS) {
1019 ads = ads_init(domain->alt_name, domain->name, NULL);
1020 ads->auth.flags |= ADS_AUTH_NO_BIND;
1022 if (ads_try_connect( ads, inet_ntoa(ip) ) ) {
1023 /* We got a cldap packet. */
1024 fstrcpy(name, ads->config.ldap_server_name);
1025 namecache_store(name, 0x20, 1, &ip_list);
1027 DEBUG(10,("dcip_to_name: flags = 0x%x\n", (unsigned int)ads->config.flags));
1029 if (domain->primary && (ads->config.flags & ADS_KDC) && ads_closest_dc(ads)) {
1030 /* We're going to use this KDC for this realm/domain.
1031 If we are using sites, then force the krb5 libs
1034 create_local_private_krb5_conf_for_domain(domain->alt_name,
1038 /* Ensure we contact this DC also. */
1039 saf_store( domain->name, name);
1040 saf_store( domain->alt_name, name);
1043 ads_destroy( &ads );
1047 ads_destroy( &ads );
1051 /* try GETDC requests next */
1053 if (send_getdc_request(ip, domain->name, &domain->sid)) {
1056 for (i=0; i<5; i++) {
1057 if (receive_getdc_response(ip, domain->name, name)) {
1058 namecache_store(name, 0x20, 1, &ip_list);
1065 /* try node status request */
1067 if ( name_status_find(domain->name, 0x1c, 0x20, ip, name) ) {
1068 namecache_store(name, 0x20, 1, &ip_list);
1074 /*******************************************************************
1075 Retreive a list of IP address for domain controllers. Fill in
1076 the dcs[] with results.
1077 *******************************************************************/
1079 static BOOL get_dcs(TALLOC_CTX *mem_ctx, const struct winbindd_domain *domain,
1080 struct dc_name_ip **dcs, int *num_dcs)
1084 struct ip_service *ip_list = NULL;
1085 int iplist_size = 0;
1088 enum security_types sec = (enum security_types)lp_security();
1090 is_our_domain = strequal(domain->name, lp_workgroup());
1093 && get_dc_name_via_netlogon(domain, dcname, &ip)
1094 && add_one_dc_unique(mem_ctx, domain->name, dcname, ip, dcs, num_dcs) )
1096 DEBUG(10, ("Retrieved DC %s at %s via netlogon\n",
1097 dcname, inet_ntoa(ip)));
1101 if (sec == SEC_ADS) {
1102 /* We need to make sure we know the local site before
1103 doing any DNS queries, as this will restrict the
1104 get_sorted_dc_list() call below to only fetching
1105 DNS records for the correct site. */
1107 /* Find any DC to get the site record.
1108 We deliberately don't care about the
1110 get_dc_name(domain->name, lp_realm(), dcname, &ip);
1112 /* Now do the site-specific AD dns lookup. */
1113 get_sorted_dc_list(domain->alt_name, &ip_list, &iplist_size, True);
1116 /* try standard netbios queries if no ADS */
1119 get_sorted_dc_list(domain->name, &ip_list, &iplist_size, False);
1121 /* FIXME!! this is where we should re-insert the GETDC requests --jerry */
1123 /* now add to the dc array. We'll wait until the last minute
1124 to look up the name of the DC. But we fill in the char* for
1125 the ip now in to make the failed connection cache work */
1127 for ( i=0; i<iplist_size; i++ ) {
1128 add_one_dc_unique(mem_ctx, domain->name, inet_ntoa(ip_list[i].ip),
1129 ip_list[i].ip, dcs, num_dcs);
1132 SAFE_FREE( ip_list );
1137 static BOOL find_new_dc(TALLOC_CTX *mem_ctx,
1138 const struct winbindd_domain *domain,
1139 fstring dcname, struct sockaddr_in *addr, int *fd)
1141 struct dc_name_ip *dcs = NULL;
1144 const char **dcnames = NULL;
1145 int num_dcnames = 0;
1147 struct sockaddr_in *addrs = NULL;
1153 if (!get_dcs(mem_ctx, domain, &dcs, &num_dcs) || (num_dcs == 0))
1156 for (i=0; i<num_dcs; i++) {
1158 if (!add_string_to_array(mem_ctx, dcs[i].name,
1159 &dcnames, &num_dcnames)) {
1162 if (!add_sockaddr_to_array(mem_ctx, dcs[i].ip, 445,
1163 &addrs, &num_addrs)) {
1167 if (!add_string_to_array(mem_ctx, dcs[i].name,
1168 &dcnames, &num_dcnames)) {
1171 if (!add_sockaddr_to_array(mem_ctx, dcs[i].ip, 139,
1172 &addrs, &num_addrs)) {
1177 if ((num_dcnames == 0) || (num_dcnames != num_addrs))
1180 if ((addrs == NULL) || (dcnames == NULL))
1183 /* 5 second timeout. */
1184 if ( !open_any_socket_out(addrs, num_addrs, 5000, &fd_index, fd) )
1186 for (i=0; i<num_dcs; i++) {
1187 DEBUG(10, ("find_new_dc: open_any_socket_out failed for "
1188 "domain %s address %s. Error was %s\n",
1189 domain->name, inet_ntoa(dcs[i].ip), strerror(errno) ));
1190 winbind_add_failed_connection_entry(domain,
1191 dcs[i].name, NT_STATUS_UNSUCCESSFUL);
1196 *addr = addrs[fd_index];
1198 if (*dcnames[fd_index] != '\0' && !is_ipaddress(dcnames[fd_index])) {
1199 /* Ok, we've got a name for the DC */
1200 fstrcpy(dcname, dcnames[fd_index]);
1204 /* Try to figure out the name */
1205 if (dcip_to_name( domain, addr->sin_addr, dcname )) {
1209 /* We can not continue without the DC's name */
1210 winbind_add_failed_connection_entry(domain, dcs[fd_index].name,
1211 NT_STATUS_UNSUCCESSFUL);
1215 static NTSTATUS cm_open_connection(struct winbindd_domain *domain,
1216 struct winbindd_cm_conn *new_conn)
1218 TALLOC_CTX *mem_ctx;
1220 char *saf_servername = saf_fetch( domain->name );
1223 if ((mem_ctx = talloc_init("cm_open_connection")) == NULL) {
1224 SAFE_FREE(saf_servername);
1225 set_domain_offline(domain);
1226 return NT_STATUS_NO_MEMORY;
1229 /* we have to check the server affinity cache here since
1230 later we selecte a DC based on response time and not preference */
1232 /* Check the negative connection cache
1233 before talking to it. It going down may have
1234 triggered the reconnection. */
1236 if ( saf_servername && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, saf_servername))) {
1238 DEBUG(10,("cm_open_connection: saf_servername is '%s' for domain %s\n",
1239 saf_servername, domain->name ));
1241 /* convert an ip address to a name */
1242 if ( is_ipaddress( saf_servername ) ) {
1246 ip = *interpret_addr2( saf_servername );
1247 if (dcip_to_name( domain, ip, saf_name )) {
1248 fstrcpy( domain->dcname, saf_name );
1250 winbind_add_failed_connection_entry(
1251 domain, saf_servername,
1252 NT_STATUS_UNSUCCESSFUL);
1255 fstrcpy( domain->dcname, saf_servername );
1258 SAFE_FREE( saf_servername );
1261 for (retries = 0; retries < 3; retries++) {
1266 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1268 DEBUG(10,("cm_open_connection: dcname is '%s' for domain %s\n",
1269 domain->dcname, domain->name ));
1272 && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, domain->dcname))
1273 && (resolve_name(domain->dcname, &domain->dcaddr.sin_addr, 0x20)))
1275 struct sockaddr_in *addrs = NULL;
1279 if (!add_sockaddr_to_array(mem_ctx, domain->dcaddr.sin_addr, 445, &addrs, &num_addrs)) {
1280 set_domain_offline(domain);
1281 talloc_destroy(mem_ctx);
1282 return NT_STATUS_NO_MEMORY;
1284 if (!add_sockaddr_to_array(mem_ctx, domain->dcaddr.sin_addr, 139, &addrs, &num_addrs)) {
1285 set_domain_offline(domain);
1286 talloc_destroy(mem_ctx);
1287 return NT_STATUS_NO_MEMORY;
1290 /* 5 second timeout. */
1291 if (!open_any_socket_out(addrs, num_addrs, 5000, &dummy, &fd)) {
1297 && !find_new_dc(mem_ctx, domain, domain->dcname, &domain->dcaddr, &fd))
1299 /* This is the one place where we will
1300 set the global winbindd offline state
1301 to true, if a "WINBINDD_OFFLINE" entry
1302 is found in the winbindd cache. */
1303 set_global_winbindd_state_offline();
1307 new_conn->cli = NULL;
1309 result = cm_prepare_connection(domain, fd, domain->dcname,
1310 &new_conn->cli, &retry);
1316 if (NT_STATUS_IS_OK(result)) {
1317 if (domain->online == False) {
1318 /* We're changing state from offline to online. */
1319 set_global_winbindd_state_online();
1321 set_domain_online(domain);
1323 /* Ensure we setup the retry handler. */
1324 set_domain_offline(domain);
1327 talloc_destroy(mem_ctx);
1331 /* Close down all open pipes on a connection. */
1333 void invalidate_cm_connection(struct winbindd_cm_conn *conn)
1335 /* We're closing down a possibly dead
1336 connection. Don't have impossibly long (10s) timeouts. */
1339 cli_set_timeout(conn->cli, 1000); /* 1 second. */
1342 if (conn->samr_pipe != NULL) {
1343 if (!cli_rpc_pipe_close(conn->samr_pipe)) {
1344 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1346 cli_set_timeout(conn->cli, 500);
1349 conn->samr_pipe = NULL;
1352 if (conn->lsa_pipe != NULL) {
1353 if (!cli_rpc_pipe_close(conn->lsa_pipe)) {
1354 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1356 cli_set_timeout(conn->cli, 500);
1359 conn->lsa_pipe = NULL;
1362 if (conn->netlogon_pipe != NULL) {
1363 if (!cli_rpc_pipe_close(conn->netlogon_pipe)) {
1364 /* Ok, it must be dead. Drop timeout to 0.5 sec. */
1366 cli_set_timeout(conn->cli, 500);
1369 conn->netlogon_pipe = NULL;
1373 cli_shutdown(conn->cli);
1379 void close_conns_after_fork(void)
1381 struct winbindd_domain *domain;
1383 for (domain = domain_list(); domain; domain = domain->next) {
1384 if (domain->conn.cli == NULL)
1387 if (domain->conn.cli->fd == -1)
1390 close(domain->conn.cli->fd);
1391 domain->conn.cli->fd = -1;
1395 static BOOL connection_ok(struct winbindd_domain *domain)
1397 if (domain->conn.cli == NULL) {
1398 DEBUG(8, ("connection_ok: Connection to %s for domain %s has NULL "
1399 "cli!\n", domain->dcname, domain->name));
1403 if (!domain->conn.cli->initialised) {
1404 DEBUG(3, ("connection_ok: Connection to %s for domain %s was never "
1405 "initialised!\n", domain->dcname, domain->name));
1409 if (domain->conn.cli->fd == -1) {
1410 DEBUG(3, ("connection_ok: Connection to %s for domain %s has died or was "
1411 "never started (fd == -1)\n",
1412 domain->dcname, domain->name));
1416 if (domain->online == False) {
1417 DEBUG(3, ("connection_ok: Domain %s is offline\n", domain->name));
1424 /* Initialize a new connection up to the RPC BIND.
1425 Bypass online status check so always does network calls. */
1427 static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain)
1431 /* Internal connections never use the network. */
1432 if (domain->internal) {
1433 domain->initialized = True;
1434 return NT_STATUS_OK;
1437 if (connection_ok(domain)) {
1438 if (!domain->initialized) {
1439 set_dc_type_and_flags(domain);
1441 return NT_STATUS_OK;
1444 invalidate_cm_connection(&domain->conn);
1446 result = cm_open_connection(domain, &domain->conn);
1448 if (NT_STATUS_IS_OK(result) && !domain->initialized) {
1449 set_dc_type_and_flags(domain);
1455 NTSTATUS init_dc_connection(struct winbindd_domain *domain)
1457 if (domain->initialized && !domain->online) {
1458 /* We check for online status elsewhere. */
1459 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1462 return init_dc_connection_network(domain);
1465 /******************************************************************************
1466 We can 'sense' certain things about the DC by it's replies to certain
1469 This tells us if this particular remote server is Active Directory, and if it
1471 ******************************************************************************/
1473 static void set_dc_type_and_flags( struct winbindd_domain *domain )
1477 TALLOC_CTX *mem_ctx = NULL;
1478 struct rpc_pipe_client *cli;
1481 char *domain_name = NULL;
1482 char *dns_name = NULL;
1483 char *forest_name = NULL;
1484 DOM_SID *dom_sid = NULL;
1488 if (!connection_ok(domain)) {
1492 DEBUG(5, ("set_dc_type_and_flags: domain %s\n", domain->name ));
1494 cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_LSARPC_DS,
1498 DEBUG(5, ("set_dc_type_and_flags: Could not bind to "
1499 "PI_LSARPC_DS on domain %s: (%s)\n",
1500 domain->name, nt_errstr(result)));
1504 result = rpccli_ds_getprimarydominfo(cli, cli->cli->mem_ctx,
1505 DsRolePrimaryDomainInfoBasic,
1507 cli_rpc_pipe_close(cli);
1509 if (!NT_STATUS_IS_OK(result)) {
1510 DEBUG(5, ("set_dc_type_and_flags: rpccli_ds_getprimarydominfo "
1511 "on domain %s failed: (%s)\n",
1512 domain->name, nt_errstr(result)));
1516 if ((ctr.basic->flags & DSROLE_PRIMARY_DS_RUNNING) &&
1517 !(ctr.basic->flags & DSROLE_PRIMARY_DS_MIXED_MODE)) {
1518 domain->native_mode = True;
1520 domain->native_mode = False;
1523 cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_LSARPC, &result);
1526 DEBUG(5, ("set_dc_type_and_flags: Could not bind to "
1527 "PI_LSARPC on domain %s: (%s)\n",
1528 domain->name, nt_errstr(result)));
1529 cli_rpc_pipe_close(cli);
1533 mem_ctx = talloc_init("set_dc_type_and_flags on domain %s\n",
1536 DEBUG(1, ("set_dc_type_and_flags: talloc_init() failed\n"));
1537 cli_rpc_pipe_close(cli);
1541 result = rpccli_lsa_open_policy2(cli, mem_ctx, True,
1542 SEC_RIGHTS_MAXIMUM_ALLOWED, &pol);
1544 if (NT_STATUS_IS_OK(result)) {
1545 /* This particular query is exactly what Win2k clients use
1546 to determine that the DC is active directory */
1547 result = rpccli_lsa_query_info_policy2(cli, mem_ctx, &pol,
1549 &dns_name, &forest_name,
1553 if (NT_STATUS_IS_OK(result)) {
1554 domain->active_directory = True;
1557 fstrcpy(domain->name, domain_name);
1560 fstrcpy(domain->alt_name, dns_name);
1563 fstrcpy(domain->forest_name, forest_name);
1566 sid_copy(&domain->sid, dom_sid);
1568 domain->active_directory = False;
1570 result = rpccli_lsa_open_policy(cli, mem_ctx, True,
1571 SEC_RIGHTS_MAXIMUM_ALLOWED,
1574 if (!NT_STATUS_IS_OK(result))
1577 result = rpccli_lsa_query_info_policy(cli, mem_ctx,
1578 &pol, 5, &domain_name,
1581 if (NT_STATUS_IS_OK(result)) {
1583 fstrcpy(domain->name, domain_name);
1586 sid_copy(&domain->sid, dom_sid);
1591 DEBUG(5, ("set_dc_type_and_flags: domain %s is %sin native mode.\n",
1592 domain->name, domain->native_mode ? "" : "NOT "));
1594 DEBUG(5,("set_dc_type_and_flags: domain %s is %srunning active directory.\n",
1595 domain->name, domain->active_directory ? "" : "NOT "));
1597 cli_rpc_pipe_close(cli);
1599 talloc_destroy(mem_ctx);
1601 domain->initialized = True;
1604 static BOOL cm_get_schannel_dcinfo(struct winbindd_domain *domain,
1605 struct dcinfo **ppdc)
1608 struct rpc_pipe_client *netlogon_pipe;
1610 if (lp_client_schannel() == False) {
1614 result = cm_connect_netlogon(domain, &netlogon_pipe);
1615 if (!NT_STATUS_IS_OK(result)) {
1619 /* Return a pointer to the struct dcinfo from the
1622 *ppdc = domain->conn.netlogon_pipe->dc;
1626 NTSTATUS cm_connect_sam(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
1627 struct rpc_pipe_client **cli, POLICY_HND *sam_handle)
1629 struct winbindd_cm_conn *conn;
1630 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1632 struct dcinfo *p_dcinfo;
1634 result = init_dc_connection(domain);
1635 if (!NT_STATUS_IS_OK(result)) {
1639 conn = &domain->conn;
1641 if (conn->samr_pipe != NULL) {
1646 * No SAMR pipe yet. Attempt to get an NTLMSSP SPNEGO authenticated
1647 * sign and sealed pipe using the machine account password by
1648 * preference. If we can't - try schannel, if that fails, try
1652 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
1653 if ((conn->cli->user_name[0] == '\0') ||
1654 (conn->cli->domain[0] == '\0') ||
1655 (conn_pwd[0] == '\0')) {
1656 DEBUG(10, ("cm_connect_sam: No no user available for "
1657 "domain %s, trying schannel\n", conn->cli->domain));
1661 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
1662 authenticated SAMR pipe with sign & seal. */
1664 cli_rpc_pipe_open_spnego_ntlmssp(conn->cli, PI_SAMR,
1665 PIPE_AUTH_LEVEL_PRIVACY,
1667 conn->cli->user_name,
1670 if (conn->samr_pipe == NULL) {
1671 DEBUG(10,("cm_connect_sam: failed to connect to SAMR "
1672 "pipe for domain %s using NTLMSSP "
1673 "authenticated pipe: user %s\\%s. Error was "
1674 "%s\n", domain->name, conn->cli->domain,
1675 conn->cli->user_name, nt_errstr(result)));
1679 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for "
1680 "domain %s using NTLMSSP authenticated "
1681 "pipe: user %s\\%s\n", domain->name,
1682 conn->cli->domain, conn->cli->user_name ));
1684 result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
1685 SEC_RIGHTS_MAXIMUM_ALLOWED,
1686 &conn->sam_connect_handle);
1687 if (NT_STATUS_IS_OK(result)) {
1690 DEBUG(10,("cm_connect_sam: ntlmssp-sealed rpccli_samr_connect "
1691 "failed for domain %s, error was %s. Trying schannel\n",
1692 domain->name, nt_errstr(result) ));
1693 cli_rpc_pipe_close(conn->samr_pipe);
1697 /* Fall back to schannel if it's a W2K pre-SP1 box. */
1699 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
1700 /* If this call fails - conn->cli can now be NULL ! */
1701 DEBUG(10, ("cm_connect_sam: Could not get schannel auth info "
1702 "for domain %s, trying anon\n", domain->name));
1705 conn->samr_pipe = cli_rpc_pipe_open_schannel_with_key
1706 (conn->cli, PI_SAMR, PIPE_AUTH_LEVEL_PRIVACY,
1707 domain->name, p_dcinfo, &result);
1709 if (conn->samr_pipe == NULL) {
1710 DEBUG(10,("cm_connect_sam: failed to connect to SAMR pipe for "
1711 "domain %s using schannel. Error was %s\n",
1712 domain->name, nt_errstr(result) ));
1715 DEBUG(10,("cm_connect_sam: connected to SAMR pipe for domain %s using "
1716 "schannel.\n", domain->name ));
1718 result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
1719 SEC_RIGHTS_MAXIMUM_ALLOWED,
1720 &conn->sam_connect_handle);
1721 if (NT_STATUS_IS_OK(result)) {
1724 DEBUG(10,("cm_connect_sam: schannel-sealed rpccli_samr_connect failed "
1725 "for domain %s, error was %s. Trying anonymous\n",
1726 domain->name, nt_errstr(result) ));
1727 cli_rpc_pipe_close(conn->samr_pipe);
1731 /* Finally fall back to anonymous. */
1732 conn->samr_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_SAMR,
1735 if (conn->samr_pipe == NULL) {
1736 result = NT_STATUS_PIPE_NOT_AVAILABLE;
1740 result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
1741 SEC_RIGHTS_MAXIMUM_ALLOWED,
1742 &conn->sam_connect_handle);
1743 if (!NT_STATUS_IS_OK(result)) {
1744 DEBUG(10,("cm_connect_sam: rpccli_samr_connect failed "
1745 "for domain %s Error was %s\n",
1746 domain->name, nt_errstr(result) ));
1751 result = rpccli_samr_open_domain(conn->samr_pipe,
1753 &conn->sam_connect_handle,
1754 SEC_RIGHTS_MAXIMUM_ALLOWED,
1756 &conn->sam_domain_handle);
1760 if (!NT_STATUS_IS_OK(result)) {
1761 invalidate_cm_connection(conn);
1765 *cli = conn->samr_pipe;
1766 *sam_handle = conn->sam_domain_handle;
1770 NTSTATUS cm_connect_lsa(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
1771 struct rpc_pipe_client **cli, POLICY_HND *lsa_policy)
1773 struct winbindd_cm_conn *conn;
1774 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1776 struct dcinfo *p_dcinfo;
1778 result = init_dc_connection(domain);
1779 if (!NT_STATUS_IS_OK(result))
1782 conn = &domain->conn;
1784 if (conn->lsa_pipe != NULL) {
1788 pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
1789 if ((conn->cli->user_name[0] == '\0') ||
1790 (conn->cli->domain[0] == '\0') ||
1791 (conn_pwd[0] == '\0')) {
1792 DEBUG(10, ("cm_connect_lsa: No no user available for "
1793 "domain %s, trying schannel\n", conn->cli->domain));
1797 /* We have an authenticated connection. Use a NTLMSSP SPNEGO
1798 * authenticated LSA pipe with sign & seal. */
1799 conn->lsa_pipe = cli_rpc_pipe_open_spnego_ntlmssp
1800 (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
1801 conn->cli->domain, conn->cli->user_name, conn_pwd, &result);
1803 if (conn->lsa_pipe == NULL) {
1804 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
1805 "domain %s using NTLMSSP authenticated pipe: user "
1806 "%s\\%s. Error was %s. Trying schannel.\n",
1807 domain->name, conn->cli->domain,
1808 conn->cli->user_name, nt_errstr(result)));
1812 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
1813 "NTLMSSP authenticated pipe: user %s\\%s\n",
1814 domain->name, conn->cli->domain, conn->cli->user_name ));
1816 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
1817 SEC_RIGHTS_MAXIMUM_ALLOWED,
1819 if (NT_STATUS_IS_OK(result)) {
1823 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
1826 cli_rpc_pipe_close(conn->lsa_pipe);
1830 /* Fall back to schannel if it's a W2K pre-SP1 box. */
1832 if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
1833 /* If this call fails - conn->cli can now be NULL ! */
1834 DEBUG(10, ("cm_connect_lsa: Could not get schannel auth info "
1835 "for domain %s, trying anon\n", domain->name));
1838 conn->lsa_pipe = cli_rpc_pipe_open_schannel_with_key
1839 (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
1840 domain->name, p_dcinfo, &result);
1842 if (conn->lsa_pipe == NULL) {
1843 DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
1844 "domain %s using schannel. Error was %s\n",
1845 domain->name, nt_errstr(result) ));
1848 DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
1849 "schannel.\n", domain->name ));
1851 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
1852 SEC_RIGHTS_MAXIMUM_ALLOWED,
1854 if (NT_STATUS_IS_OK(result)) {
1858 DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
1861 cli_rpc_pipe_close(conn->lsa_pipe);
1865 conn->lsa_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_LSARPC,
1867 if (conn->lsa_pipe == NULL) {
1868 result = NT_STATUS_PIPE_NOT_AVAILABLE;
1872 result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
1873 SEC_RIGHTS_MAXIMUM_ALLOWED,
1876 if (!NT_STATUS_IS_OK(result)) {
1877 invalidate_cm_connection(conn);
1881 *cli = conn->lsa_pipe;
1882 *lsa_policy = conn->lsa_policy;
1886 /****************************************************************************
1887 Open the netlogon pipe to this DC. Use schannel if specified in client conf.
1888 session key stored in conn->netlogon_pipe->dc->sess_key.
1889 ****************************************************************************/
1891 NTSTATUS cm_connect_netlogon(struct winbindd_domain *domain,
1892 struct rpc_pipe_client **cli)
1894 struct winbindd_cm_conn *conn;
1897 uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS;
1899 uint32 sec_chan_type;
1900 const char *account_name;
1901 struct rpc_pipe_client *netlogon_pipe = NULL;
1905 result = init_dc_connection(domain);
1906 if (!NT_STATUS_IS_OK(result)) {
1910 conn = &domain->conn;
1912 if (conn->netlogon_pipe != NULL) {
1913 *cli = conn->netlogon_pipe;
1914 return NT_STATUS_OK;
1917 if (!get_trust_pw(domain->name, mach_pwd, &sec_chan_type)) {
1918 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1921 netlogon_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_NETLOGON,
1923 if (netlogon_pipe == NULL) {
1927 if (lp_client_schannel() != False) {
1928 neg_flags |= NETLOGON_NEG_SCHANNEL;
1931 /* if we are a DC and this is a trusted domain, then we need to use our
1932 domain name in the net_req_auth2() request */
1935 && !strequal(domain->name, lp_workgroup())
1936 && lp_allow_trusted_domains() )
1938 account_name = lp_workgroup();
1940 account_name = domain->primary ?
1941 global_myname() : domain->name;
1944 if (account_name == NULL) {
1945 cli_rpc_pipe_close(netlogon_pipe);
1946 return NT_STATUS_NO_MEMORY;
1949 result = rpccli_netlogon_setup_creds(
1951 domain->dcname, /* server name. */
1952 domain->name, /* domain name */
1953 global_myname(), /* client name */
1954 account_name, /* machine account */
1955 mach_pwd, /* machine password */
1956 sec_chan_type, /* from get_trust_pw */
1959 if (!NT_STATUS_IS_OK(result)) {
1960 cli_rpc_pipe_close(netlogon_pipe);
1964 if ((lp_client_schannel() == True) &&
1965 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
1966 DEBUG(3, ("Server did not offer schannel\n"));
1967 cli_rpc_pipe_close(netlogon_pipe);
1968 return NT_STATUS_ACCESS_DENIED;
1971 if ((lp_client_schannel() == False) ||
1972 ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
1973 /* We're done - just keep the existing connection to NETLOGON
1975 conn->netlogon_pipe = netlogon_pipe;
1976 *cli = conn->netlogon_pipe;
1977 return NT_STATUS_OK;
1980 /* Using the credentials from the first pipe, open a signed and sealed
1981 second netlogon pipe. The session key is stored in the schannel
1982 part of the new pipe auth struct.
1985 conn->netlogon_pipe =
1986 cli_rpc_pipe_open_schannel_with_key(conn->cli,
1988 PIPE_AUTH_LEVEL_PRIVACY,
1993 /* We can now close the initial netlogon pipe. */
1994 cli_rpc_pipe_close(netlogon_pipe);
1996 if (conn->netlogon_pipe == NULL) {
1997 DEBUG(3, ("Could not open schannel'ed NETLOGON pipe. Error "
1998 "was %s\n", nt_errstr(result)));
2000 /* make sure we return something besides OK */
2001 return !NT_STATUS_IS_OK(result) ? result : NT_STATUS_PIPE_NOT_AVAILABLE;
2004 *cli = conn->netlogon_pipe;
2005 return NT_STATUS_OK;