2 Unix SMB/CIFS implementation.
6 Copyright (C) Andrew Tridgell 2002
7 Copyright (C) Volker Lendecke 2004,2005
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * We fork a child per domain to be able to act non-blocking in the main
25 * winbind daemon. A domain controller thousands of miles away being being
26 * slow replying with a 10.000 user list should not hold up netlogon calls
27 * that can be handled locally.
32 #include "../../nsswitch/libwbclient/wbc_async.h"
33 #include "librpc/gen_ndr/messaging.h"
36 #define DBGC_CLASS DBGC_WINBIND
38 extern bool override_logfile
;
39 extern struct winbindd_methods cache_methods
;
41 /* Read some data from a client connection */
43 static NTSTATUS
child_read_request(struct winbindd_cli_state
*state
)
49 status
= read_data(state
->sock
, (char *)state
->request
,
50 sizeof(*state
->request
));
52 if (!NT_STATUS_IS_OK(status
)) {
53 DEBUG(3, ("child_read_request: read_data failed: %s\n",
58 if (state
->request
->extra_len
== 0) {
59 state
->request
->extra_data
.data
= NULL
;
63 DEBUG(10, ("Need to read %d extra bytes\n", (int)state
->request
->extra_len
));
65 state
->request
->extra_data
.data
=
66 SMB_MALLOC_ARRAY(char, state
->request
->extra_len
+ 1);
68 if (state
->request
->extra_data
.data
== NULL
) {
69 DEBUG(0, ("malloc failed\n"));
70 return NT_STATUS_NO_MEMORY
;
73 /* Ensure null termination */
74 state
->request
->extra_data
.data
[state
->request
->extra_len
] = '\0';
76 status
= read_data(state
->sock
, state
->request
->extra_data
.data
,
77 state
->request
->extra_len
);
79 if (!NT_STATUS_IS_OK(status
)) {
80 DEBUG(0, ("Could not read extra data: %s\n",
87 * Do winbind child async request. This is not simply wb_simple_trans. We have
88 * to do the queueing ourselves because while a request is queued, the child
89 * might have crashed, and we have to re-fork it in the _trigger function.
92 struct wb_child_request_state
{
93 struct tevent_context
*ev
;
94 struct winbindd_child
*child
;
95 struct winbindd_request
*request
;
96 struct winbindd_response
*response
;
99 static bool fork_domain_child(struct winbindd_child
*child
);
101 static void wb_child_request_trigger(struct tevent_req
*req
,
103 static void wb_child_request_done(struct tevent_req
*subreq
);
105 struct tevent_req
*wb_child_request_send(TALLOC_CTX
*mem_ctx
,
106 struct tevent_context
*ev
,
107 struct winbindd_child
*child
,
108 struct winbindd_request
*request
)
110 struct tevent_req
*req
;
111 struct wb_child_request_state
*state
;
113 req
= tevent_req_create(mem_ctx
, &state
,
114 struct wb_child_request_state
);
120 state
->child
= child
;
121 state
->request
= request
;
123 if (!tevent_queue_add(child
->queue
, ev
, req
,
124 wb_child_request_trigger
, NULL
)) {
125 tevent_req_nomem(NULL
, req
);
126 return tevent_req_post(req
, ev
);
131 static void wb_child_request_trigger(struct tevent_req
*req
,
134 struct wb_child_request_state
*state
= tevent_req_data(
135 req
, struct wb_child_request_state
);
136 struct tevent_req
*subreq
;
138 if ((state
->child
->pid
== 0) && (!fork_domain_child(state
->child
))) {
139 tevent_req_error(req
, errno
);
143 subreq
= wb_simple_trans_send(state
, winbind_event_context(), NULL
,
144 state
->child
->sock
, state
->request
);
145 if (tevent_req_nomem(subreq
, req
)) {
148 tevent_req_set_callback(subreq
, wb_child_request_done
, req
);
150 if (!tevent_req_set_endtime(req
, state
->ev
,
151 timeval_current_ofs(300, 0))) {
152 tevent_req_nomem(NULL
, req
);
157 static void wb_child_request_done(struct tevent_req
*subreq
)
159 struct tevent_req
*req
= tevent_req_callback_data(
160 subreq
, struct tevent_req
);
161 struct wb_child_request_state
*state
= tevent_req_data(
162 req
, struct wb_child_request_state
);
165 ret
= wb_simple_trans_recv(subreq
, state
, &state
->response
, &err
);
168 tevent_req_error(req
, err
);
171 tevent_req_done(req
);
174 int wb_child_request_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
175 struct winbindd_response
**presponse
, int *err
)
177 struct wb_child_request_state
*state
= tevent_req_data(
178 req
, struct wb_child_request_state
);
180 if (tevent_req_is_unix_error(req
, err
)) {
183 *presponse
= talloc_move(mem_ctx
, &state
->response
);
187 struct wb_domain_request_state
{
188 struct tevent_context
*ev
;
189 struct winbindd_domain
*domain
;
190 struct winbindd_request
*request
;
191 struct winbindd_request
*init_req
;
192 struct winbindd_response
*response
;
195 static void wb_domain_request_gotdc(struct tevent_req
*subreq
);
196 static void wb_domain_request_initialized(struct tevent_req
*subreq
);
197 static void wb_domain_request_done(struct tevent_req
*subreq
);
199 struct tevent_req
*wb_domain_request_send(TALLOC_CTX
*mem_ctx
,
200 struct tevent_context
*ev
,
201 struct winbindd_domain
*domain
,
202 struct winbindd_request
*request
)
204 struct tevent_req
*req
, *subreq
;
205 struct wb_domain_request_state
*state
;
207 req
= tevent_req_create(mem_ctx
, &state
,
208 struct wb_domain_request_state
);
213 if (domain
->initialized
) {
214 subreq
= wb_child_request_send(state
, ev
, &domain
->child
,
216 if (tevent_req_nomem(subreq
, req
)) {
217 return tevent_req_post(req
, ev
);
219 tevent_req_set_callback(subreq
, wb_domain_request_done
, req
);
223 state
->domain
= domain
;
225 state
->request
= request
;
227 state
->init_req
= talloc_zero(state
, struct winbindd_request
);
228 if (tevent_req_nomem(state
->init_req
, req
)) {
229 return tevent_req_post(req
, ev
);
232 if (IS_DC
|| domain
->primary
|| domain
->internal
) {
233 /* The primary domain has to find the DC name itself */
234 state
->init_req
->cmd
= WINBINDD_INIT_CONNECTION
;
235 fstrcpy(state
->init_req
->domain_name
, domain
->name
);
236 state
->init_req
->data
.init_conn
.is_primary
=
237 domain
->primary
? true : false;
238 fstrcpy(state
->init_req
->data
.init_conn
.dcname
, "");
240 subreq
= wb_child_request_send(state
, ev
, &domain
->child
,
242 if (tevent_req_nomem(subreq
, req
)) {
243 return tevent_req_post(req
, ev
);
245 tevent_req_set_callback(subreq
, wb_domain_request_initialized
,
251 * Ask our DC for a DC name
253 domain
= find_our_domain();
255 /* This is *not* the primary domain, let's ask our DC about a DC
258 state
->init_req
->cmd
= WINBINDD_GETDCNAME
;
259 fstrcpy(state
->init_req
->domain_name
, domain
->name
);
261 subreq
= wb_child_request_send(state
, ev
, &domain
->child
, request
);
262 if (tevent_req_nomem(subreq
, req
)) {
263 return tevent_req_post(req
, ev
);
265 tevent_req_set_callback(subreq
, wb_domain_request_gotdc
, req
);
269 static void wb_domain_request_gotdc(struct tevent_req
*subreq
)
271 struct tevent_req
*req
= tevent_req_callback_data(
272 subreq
, struct tevent_req
);
273 struct wb_domain_request_state
*state
= tevent_req_data(
274 req
, struct wb_domain_request_state
);
275 struct winbindd_response
*response
;
278 ret
= wb_child_request_recv(subreq
, talloc_tos(), &response
, &err
);
281 tevent_req_error(req
, err
);
284 state
->init_req
->cmd
= WINBINDD_INIT_CONNECTION
;
285 fstrcpy(state
->init_req
->domain_name
, state
->domain
->name
);
286 state
->init_req
->data
.init_conn
.is_primary
= False
;
287 fstrcpy(state
->init_req
->data
.init_conn
.dcname
,
288 response
->data
.dc_name
);
290 TALLOC_FREE(response
);
292 subreq
= wb_child_request_send(state
, state
->ev
, &state
->domain
->child
,
294 if (tevent_req_nomem(subreq
, req
)) {
297 tevent_req_set_callback(subreq
, wb_domain_request_initialized
, req
);
300 static void wb_domain_request_initialized(struct tevent_req
*subreq
)
302 struct tevent_req
*req
= tevent_req_callback_data(
303 subreq
, struct tevent_req
);
304 struct wb_domain_request_state
*state
= tevent_req_data(
305 req
, struct wb_domain_request_state
);
306 struct winbindd_response
*response
;
309 ret
= wb_child_request_recv(subreq
, talloc_tos(), &response
, &err
);
312 tevent_req_error(req
, err
);
316 if (!string_to_sid(&state
->domain
->sid
,
317 response
->data
.domain_info
.sid
)) {
318 DEBUG(1,("init_child_recv: Could not convert sid %s "
319 "from string\n", response
->data
.domain_info
.sid
));
320 tevent_req_error(req
, EINVAL
);
323 fstrcpy(state
->domain
->name
, response
->data
.domain_info
.name
);
324 fstrcpy(state
->domain
->alt_name
, response
->data
.domain_info
.alt_name
);
325 state
->domain
->native_mode
= response
->data
.domain_info
.native_mode
;
326 state
->domain
->active_directory
=
327 response
->data
.domain_info
.active_directory
;
328 state
->domain
->initialized
= true;
330 TALLOC_FREE(response
);
332 subreq
= wb_child_request_send(state
, state
->ev
, &state
->domain
->child
,
334 if (tevent_req_nomem(subreq
, req
)) {
337 tevent_req_set_callback(subreq
, wb_domain_request_done
, req
);
340 static void wb_domain_request_done(struct tevent_req
*subreq
)
342 struct tevent_req
*req
= tevent_req_callback_data(
343 subreq
, struct tevent_req
);
344 struct wb_domain_request_state
*state
= tevent_req_data(
345 req
, struct wb_domain_request_state
);
348 ret
= wb_child_request_recv(subreq
, talloc_tos(), &state
->response
,
352 tevent_req_error(req
, err
);
355 tevent_req_done(req
);
358 int wb_domain_request_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
359 struct winbindd_response
**presponse
, int *err
)
361 struct wb_domain_request_state
*state
= tevent_req_data(
362 req
, struct wb_domain_request_state
);
364 if (tevent_req_is_unix_error(req
, err
)) {
367 *presponse
= talloc_move(mem_ctx
, &state
->response
);
371 static void child_process_request(struct winbindd_child
*child
,
372 struct winbindd_cli_state
*state
)
374 struct winbindd_domain
*domain
= child
->domain
;
375 const struct winbindd_child_dispatch_table
*table
= child
->table
;
377 /* Free response data - we may be interrupted and receive another
378 command before being able to send this data off. */
380 state
->response
->result
= WINBINDD_ERROR
;
381 state
->response
->length
= sizeof(struct winbindd_response
);
383 /* as all requests in the child are sync, we can use talloc_tos() */
384 state
->mem_ctx
= talloc_tos();
386 /* Process command */
388 for (; table
->name
; table
++) {
389 if (state
->request
->cmd
== table
->struct_cmd
) {
390 DEBUG(10,("child_process_request: request fn %s\n",
392 state
->response
->result
= table
->struct_fn(domain
, state
);
397 DEBUG(1 ,("child_process_request: unknown request fn number %d\n",
398 (int)state
->request
->cmd
));
399 state
->response
->result
= WINBINDD_ERROR
;
402 void setup_child(struct winbindd_domain
*domain
, struct winbindd_child
*child
,
403 const struct winbindd_child_dispatch_table
*table
,
404 const char *logprefix
,
407 if (logprefix
&& logname
) {
408 char *logbase
= NULL
;
413 if (asprintf(&logbase
, "%s", lp_logfile()) < 0) {
414 smb_panic("Internal error: asprintf failed");
417 if ((end
= strrchr_m(logbase
, '/'))) {
421 if (asprintf(&logbase
, "%s", get_dyn_LOGFILEBASE()) < 0) {
422 smb_panic("Internal error: asprintf failed");
426 if (asprintf(&child
->logfilename
, "%s/%s-%s",
427 logbase
, logprefix
, logname
) < 0) {
429 smb_panic("Internal error: asprintf failed");
434 smb_panic("Internal error: logprefix == NULL && "
438 child
->domain
= domain
;
439 child
->table
= table
;
440 child
->queue
= tevent_queue_create(NULL
, "winbind_child");
441 SMB_ASSERT(child
->queue
!= NULL
);
442 child
->rpccli
= wbint_rpccli_create(NULL
, domain
, child
);
443 SMB_ASSERT(child
->rpccli
!= NULL
);
446 static struct winbindd_child
*winbindd_children
= NULL
;
448 void winbind_child_died(pid_t pid
)
450 struct winbindd_child
*child
;
452 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
453 if (child
->pid
== pid
) {
459 DEBUG(5, ("Already reaped child %u died\n", (unsigned int)pid
));
463 /* This will be re-added in fork_domain_child() */
465 DLIST_REMOVE(winbindd_children
, child
);
472 /* Ensure any negative cache entries with the netbios or realm names are removed. */
474 void winbindd_flush_negative_conn_cache(struct winbindd_domain
*domain
)
476 flush_negative_conn_cache_for_domain(domain
->name
);
477 if (*domain
->alt_name
) {
478 flush_negative_conn_cache_for_domain(domain
->alt_name
);
483 * Parent winbindd process sets its own debug level first and then
484 * sends a message to all the winbindd children to adjust their debug
485 * level to that of parents.
488 void winbind_msg_debug(struct messaging_context
*msg_ctx
,
491 struct server_id server_id
,
494 struct winbindd_child
*child
;
496 DEBUG(10,("winbind_msg_debug: got debug message.\n"));
498 debug_message(msg_ctx
, private_data
, MSG_DEBUG
, server_id
, data
);
500 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
502 DEBUG(10,("winbind_msg_debug: sending message to pid %u.\n",
503 (unsigned int)child
->pid
));
505 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
508 strlen((char *) data
->data
) + 1);
512 /* Set our domains as offline and forward the offline message to our children. */
514 void winbind_msg_offline(struct messaging_context
*msg_ctx
,
517 struct server_id server_id
,
520 struct winbindd_child
*child
;
521 struct winbindd_domain
*domain
;
523 DEBUG(10,("winbind_msg_offline: got offline message.\n"));
525 if (!lp_winbind_offline_logon()) {
526 DEBUG(10,("winbind_msg_offline: rejecting offline message.\n"));
530 /* Set our global state as offline. */
531 if (!set_global_winbindd_state_offline()) {
532 DEBUG(10,("winbind_msg_offline: offline request failed.\n"));
536 /* Set all our domains as offline. */
537 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
538 if (domain
->internal
) {
541 DEBUG(5,("winbind_msg_offline: marking %s offline.\n", domain
->name
));
542 set_domain_offline(domain
);
545 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
546 /* Don't send message to internal children. We've already
548 if (!child
->domain
|| winbindd_internal_child(child
)) {
552 /* Or internal domains (this should not be possible....) */
553 if (child
->domain
->internal
) {
557 /* Each winbindd child should only process requests for one domain - make sure
558 we only set it online / offline for that domain. */
560 DEBUG(10,("winbind_msg_offline: sending message to pid %u for domain %s.\n",
561 (unsigned int)child
->pid
, domain
->name
));
563 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
565 (uint8
*)child
->domain
->name
,
566 strlen(child
->domain
->name
)+1);
570 /* Set our domains as online and forward the online message to our children. */
572 void winbind_msg_online(struct messaging_context
*msg_ctx
,
575 struct server_id server_id
,
578 struct winbindd_child
*child
;
579 struct winbindd_domain
*domain
;
581 DEBUG(10,("winbind_msg_online: got online message.\n"));
583 if (!lp_winbind_offline_logon()) {
584 DEBUG(10,("winbind_msg_online: rejecting online message.\n"));
588 /* Set our global state as online. */
589 set_global_winbindd_state_online();
591 smb_nscd_flush_user_cache();
592 smb_nscd_flush_group_cache();
594 /* Set all our domains as online. */
595 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
596 if (domain
->internal
) {
599 DEBUG(5,("winbind_msg_online: requesting %s to go online.\n", domain
->name
));
601 winbindd_flush_negative_conn_cache(domain
);
602 set_domain_online_request(domain
);
604 /* Send an online message to the idmap child when our
605 primary domain comes back online */
607 if ( domain
->primary
) {
608 struct winbindd_child
*idmap
= idmap_child();
610 if ( idmap
->pid
!= 0 ) {
611 messaging_send_buf(msg_ctx
,
612 pid_to_procid(idmap
->pid
),
614 (uint8
*)domain
->name
,
615 strlen(domain
->name
)+1);
620 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
621 /* Don't send message to internal childs. */
622 if (!child
->domain
|| winbindd_internal_child(child
)) {
626 /* Or internal domains (this should not be possible....) */
627 if (child
->domain
->internal
) {
631 /* Each winbindd child should only process requests for one domain - make sure
632 we only set it online / offline for that domain. */
634 DEBUG(10,("winbind_msg_online: sending message to pid %u for domain %s.\n",
635 (unsigned int)child
->pid
, child
->domain
->name
));
637 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
639 (uint8
*)child
->domain
->name
,
640 strlen(child
->domain
->name
)+1);
644 static const char *collect_onlinestatus(TALLOC_CTX
*mem_ctx
)
646 struct winbindd_domain
*domain
;
649 if ((buf
= talloc_asprintf(mem_ctx
, "global:%s ",
650 get_global_winbindd_state_offline() ?
651 "Offline":"Online")) == NULL
) {
655 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
656 if ((buf
= talloc_asprintf_append_buffer(buf
, "%s:%s ",
659 "Online":"Offline")) == NULL
) {
664 buf
= talloc_asprintf_append_buffer(buf
, "\n");
666 DEBUG(5,("collect_onlinestatus: %s", buf
));
671 void winbind_msg_onlinestatus(struct messaging_context
*msg_ctx
,
674 struct server_id server_id
,
679 struct server_id
*sender
;
681 DEBUG(5,("winbind_msg_onlinestatus received.\n"));
687 sender
= (struct server_id
*)data
->data
;
689 mem_ctx
= talloc_init("winbind_msg_onlinestatus");
690 if (mem_ctx
== NULL
) {
694 message
= collect_onlinestatus(mem_ctx
);
695 if (message
== NULL
) {
696 talloc_destroy(mem_ctx
);
700 messaging_send_buf(msg_ctx
, *sender
, MSG_WINBIND_ONLINESTATUS
,
701 (uint8
*)message
, strlen(message
) + 1);
703 talloc_destroy(mem_ctx
);
706 void winbind_msg_dump_event_list(struct messaging_context
*msg_ctx
,
709 struct server_id server_id
,
712 struct winbindd_child
*child
;
714 DEBUG(10,("winbind_msg_dump_event_list received\n"));
716 dump_event_list(winbind_event_context());
718 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
720 DEBUG(10,("winbind_msg_dump_event_list: sending message to pid %u\n",
721 (unsigned int)child
->pid
));
723 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
730 void winbind_msg_dump_domain_list(struct messaging_context
*msg_ctx
,
733 struct server_id server_id
,
737 const char *message
= NULL
;
738 struct server_id
*sender
= NULL
;
739 const char *domain
= NULL
;
742 struct winbindd_domain
*dom
= NULL
;
744 DEBUG(5,("winbind_msg_dump_domain_list received.\n"));
746 if (!data
|| !data
->data
) {
750 if (data
->length
< sizeof(struct server_id
)) {
754 mem_ctx
= talloc_init("winbind_msg_dump_domain_list");
759 sender
= (struct server_id
*)data
->data
;
760 if (data
->length
> sizeof(struct server_id
)) {
761 domain
= (const char *)data
->data
+sizeof(struct server_id
);
766 DEBUG(5,("winbind_msg_dump_domain_list for domain: %s\n",
769 message
= NDR_PRINT_STRUCT_STRING(mem_ctx
, winbindd_domain
,
770 find_domain_from_name_noinit(domain
));
772 talloc_destroy(mem_ctx
);
776 messaging_send_buf(msg_ctx
, *sender
,
777 MSG_WINBIND_DUMP_DOMAIN_LIST
,
778 (uint8_t *)message
, strlen(message
) + 1);
780 talloc_destroy(mem_ctx
);
785 DEBUG(5,("winbind_msg_dump_domain_list all domains\n"));
787 for (dom
= domain_list(); dom
; dom
=dom
->next
) {
788 message
= NDR_PRINT_STRUCT_STRING(mem_ctx
, winbindd_domain
, dom
);
790 talloc_destroy(mem_ctx
);
794 s
= talloc_asprintf_append(s
, "%s\n", message
);
796 talloc_destroy(mem_ctx
);
801 status
= messaging_send_buf(msg_ctx
, *sender
,
802 MSG_WINBIND_DUMP_DOMAIN_LIST
,
803 (uint8_t *)s
, strlen(s
) + 1);
804 if (!NT_STATUS_IS_OK(status
)) {
805 DEBUG(0,("failed to send message: %s\n",
809 talloc_destroy(mem_ctx
);
812 static void account_lockout_policy_handler(struct event_context
*ctx
,
813 struct timed_event
*te
,
817 struct winbindd_child
*child
=
818 (struct winbindd_child
*)private_data
;
819 TALLOC_CTX
*mem_ctx
= NULL
;
820 struct winbindd_methods
*methods
;
821 struct samr_DomInfo12 lockout_policy
;
824 DEBUG(10,("account_lockout_policy_handler called\n"));
826 TALLOC_FREE(child
->lockout_policy_event
);
828 if ( !winbindd_can_contact_domain( child
->domain
) ) {
829 DEBUG(10,("account_lockout_policy_handler: Removing myself since I "
830 "do not have an incoming trust to domain %s\n",
831 child
->domain
->name
));
836 methods
= child
->domain
->methods
;
838 mem_ctx
= talloc_init("account_lockout_policy_handler ctx");
840 result
= NT_STATUS_NO_MEMORY
;
842 result
= methods
->lockout_policy(child
->domain
, mem_ctx
, &lockout_policy
);
844 TALLOC_FREE(mem_ctx
);
846 if (!NT_STATUS_IS_OK(result
)) {
847 DEBUG(10,("account_lockout_policy_handler: lockout_policy failed error %s\n",
851 child
->lockout_policy_event
= event_add_timed(winbind_event_context(), NULL
,
852 timeval_current_ofs(3600, 0),
853 account_lockout_policy_handler
,
857 static time_t get_machine_password_timeout(void)
859 /* until we have gpo support use lp setting */
860 return lp_machine_password_timeout();
863 static bool calculate_next_machine_pwd_change(const char *domain
,
866 time_t pass_last_set_time
;
872 pw
= secrets_fetch_machine_password(domain
,
877 DEBUG(0,("cannot fetch own machine password ????"));
883 timeout
= get_machine_password_timeout();
885 DEBUG(10,("machine password never expires\n"));
889 tv
.tv_sec
= pass_last_set_time
;
890 DEBUG(10, ("password last changed %s\n",
891 timeval_string(talloc_tos(), &tv
, false)));
892 tv
.tv_sec
+= timeout
;
893 DEBUGADD(10, ("password valid until %s\n",
894 timeval_string(talloc_tos(), &tv
, false)));
896 if (time(NULL
) < (pass_last_set_time
+ timeout
)) {
897 next_change
= pass_last_set_time
+ timeout
;
898 DEBUG(10,("machine password still valid until: %s\n",
899 http_timestring(talloc_tos(), next_change
)));
900 *t
= timeval_set(next_change
, 0);
902 if (lp_clustering()) {
905 * When having a cluster, we have several
906 * winbinds racing for the password change. In
907 * the machine_password_change_handler()
908 * function we check if someone else was
909 * faster when the event triggers. We add a
910 * 255-second random delay here, so that we
911 * don't run to change the password at the
914 generate_random_buffer(&randbuf
, sizeof(randbuf
));
915 DEBUG(10, ("adding %d seconds randomness\n",
917 t
->tv_sec
+= randbuf
;
922 DEBUG(10,("machine password expired, needs immediate change\n"));
929 static void machine_password_change_handler(struct event_context
*ctx
,
930 struct timed_event
*te
,
934 struct winbindd_child
*child
=
935 (struct winbindd_child
*)private_data
;
936 struct rpc_pipe_client
*netlogon_pipe
= NULL
;
939 struct timeval next_change
;
941 DEBUG(10,("machine_password_change_handler called\n"));
943 TALLOC_FREE(child
->machine_password_change_event
);
945 if (!calculate_next_machine_pwd_change(child
->domain
->name
,
947 DEBUG(10, ("calculate_next_machine_pwd_change failed\n"));
951 DEBUG(10, ("calculate_next_machine_pwd_change returned %s\n",
952 timeval_string(talloc_tos(), &next_change
, false)));
954 if (!timeval_expired(&next_change
)) {
955 DEBUG(10, ("Someone else has already changed the pw\n"));
959 if (!winbindd_can_contact_domain(child
->domain
)) {
960 DEBUG(10,("machine_password_change_handler: Removing myself since I "
961 "do not have an incoming trust to domain %s\n",
962 child
->domain
->name
));
966 result
= cm_connect_netlogon(child
->domain
, &netlogon_pipe
);
967 if (!NT_STATUS_IS_OK(result
)) {
968 DEBUG(10,("machine_password_change_handler: "
969 "failed to connect netlogon pipe: %s\n",
974 frame
= talloc_stackframe();
976 result
= trust_pw_find_change_and_store_it(netlogon_pipe
,
978 child
->domain
->name
);
981 DEBUG(10, ("machine_password_change_handler: "
982 "trust_pw_find_change_and_store_it returned %s\n",
985 if (NT_STATUS_EQUAL(result
, NT_STATUS_ACCESS_DENIED
) ) {
986 DEBUG(3,("machine_password_change_handler: password set returned "
987 "ACCESS_DENIED. Maybe the trust account "
988 "password was changed and we didn't know it. "
989 "Killing connections to domain %s\n",
990 child
->domain
->name
));
991 TALLOC_FREE(child
->domain
->conn
.netlogon_pipe
);
994 if (!calculate_next_machine_pwd_change(child
->domain
->name
,
996 DEBUG(10, ("calculate_next_machine_pwd_change failed\n"));
1000 DEBUG(10, ("calculate_next_machine_pwd_change returned %s\n",
1001 timeval_string(talloc_tos(), &next_change
, false)));
1003 if (!NT_STATUS_IS_OK(result
)) {
1006 * In case of failure, give the DC a minute to recover
1008 tmp
= timeval_current_ofs(60, 0);
1009 next_change
= timeval_max(&next_change
, &tmp
);
1013 child
->machine_password_change_event
= event_add_timed(winbind_event_context(), NULL
,
1015 machine_password_change_handler
,
1019 /* Deal with a request to go offline. */
1021 static void child_msg_offline(struct messaging_context
*msg
,
1024 struct server_id server_id
,
1027 struct winbindd_domain
*domain
;
1028 struct winbindd_domain
*primary_domain
= NULL
;
1029 const char *domainname
= (const char *)data
->data
;
1031 if (data
->data
== NULL
|| data
->length
== 0) {
1035 DEBUG(5,("child_msg_offline received for domain %s.\n", domainname
));
1037 if (!lp_winbind_offline_logon()) {
1038 DEBUG(10,("child_msg_offline: rejecting offline message.\n"));
1042 primary_domain
= find_our_domain();
1044 /* Mark the requested domain offline. */
1046 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1047 if (domain
->internal
) {
1050 if (strequal(domain
->name
, domainname
)) {
1051 DEBUG(5,("child_msg_offline: marking %s offline.\n", domain
->name
));
1052 set_domain_offline(domain
);
1053 /* we are in the trusted domain, set the primary domain
1055 if (domain
!= primary_domain
) {
1056 set_domain_offline(primary_domain
);
1062 /* Deal with a request to go online. */
1064 static void child_msg_online(struct messaging_context
*msg
,
1067 struct server_id server_id
,
1070 struct winbindd_domain
*domain
;
1071 struct winbindd_domain
*primary_domain
= NULL
;
1072 const char *domainname
= (const char *)data
->data
;
1074 if (data
->data
== NULL
|| data
->length
== 0) {
1078 DEBUG(5,("child_msg_online received for domain %s.\n", domainname
));
1080 if (!lp_winbind_offline_logon()) {
1081 DEBUG(10,("child_msg_online: rejecting online message.\n"));
1085 primary_domain
= find_our_domain();
1087 /* Set our global state as online. */
1088 set_global_winbindd_state_online();
1090 /* Try and mark everything online - delete any negative cache entries
1091 to force a reconnect now. */
1093 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1094 if (domain
->internal
) {
1097 if (strequal(domain
->name
, domainname
)) {
1098 DEBUG(5,("child_msg_online: requesting %s to go online.\n", domain
->name
));
1099 winbindd_flush_negative_conn_cache(domain
);
1100 set_domain_online_request(domain
);
1102 /* we can be in trusted domain, which will contact primary domain
1103 * we have to bring primary domain online in trusted domain process
1104 * see, winbindd_dual_pam_auth() --> winbindd_dual_pam_auth_samlogon()
1105 * --> contact_domain = find_our_domain()
1107 if (domain
!= primary_domain
) {
1108 winbindd_flush_negative_conn_cache(primary_domain
);
1109 set_domain_online_request(primary_domain
);
1115 static void child_msg_dump_event_list(struct messaging_context
*msg
,
1118 struct server_id server_id
,
1121 DEBUG(5,("child_msg_dump_event_list received\n"));
1123 dump_event_list(winbind_event_context());
1126 bool winbindd_reinit_after_fork(const char *logfilename
)
1128 struct winbindd_domain
*domain
;
1129 struct winbindd_child
*cl
;
1132 status
= reinit_after_fork(winbind_messaging_context(),
1133 winbind_event_context(),
1134 procid_self(), true);
1135 if (!NT_STATUS_IS_OK(status
)) {
1136 DEBUG(0,("reinit_after_fork() failed\n"));
1140 close_conns_after_fork();
1142 if (!override_logfile
&& logfilename
) {
1143 lp_set_logfile(logfilename
);
1147 if (!winbindd_setup_sig_term_handler(false))
1149 if (!winbindd_setup_sig_hup_handler(override_logfile
? NULL
:
1153 /* Stop zombies in children */
1156 /* Don't handle the same messages as our parent. */
1157 messaging_deregister(winbind_messaging_context(),
1158 MSG_SMB_CONF_UPDATED
, NULL
);
1159 messaging_deregister(winbind_messaging_context(),
1160 MSG_SHUTDOWN
, NULL
);
1161 messaging_deregister(winbind_messaging_context(),
1162 MSG_WINBIND_OFFLINE
, NULL
);
1163 messaging_deregister(winbind_messaging_context(),
1164 MSG_WINBIND_ONLINE
, NULL
);
1165 messaging_deregister(winbind_messaging_context(),
1166 MSG_WINBIND_ONLINESTATUS
, NULL
);
1167 messaging_deregister(winbind_messaging_context(),
1168 MSG_DUMP_EVENT_LIST
, NULL
);
1169 messaging_deregister(winbind_messaging_context(),
1170 MSG_WINBIND_DUMP_DOMAIN_LIST
, NULL
);
1171 messaging_deregister(winbind_messaging_context(),
1174 /* We have destroyed all events in the winbindd_event_context
1175 * in reinit_after_fork(), so clean out all possible pending
1176 * event pointers. */
1178 /* Deal with check_online_events. */
1180 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1181 TALLOC_FREE(domain
->check_online_event
);
1184 /* Ensure we're not handling a credential cache event inherited
1185 * from our parent. */
1187 ccache_remove_all_after_fork();
1189 /* Destroy all possible events in child list. */
1190 for (cl
= winbindd_children
; cl
!= NULL
; cl
= cl
->next
) {
1191 TALLOC_FREE(cl
->lockout_policy_event
);
1192 TALLOC_FREE(cl
->machine_password_change_event
);
1194 /* Children should never be able to send
1195 * each other messages, all messages must
1196 * go through the parent.
1201 * This is a little tricky, children must not
1202 * send an MSG_WINBIND_ONLINE message to idmap_child().
1203 * If we are in a child of our primary domain or
1204 * in the process created by fork_child_dc_connect(),
1205 * and the primary domain cannot go online,
1206 * fork_child_dc_connection() sends MSG_WINBIND_ONLINE
1207 * periodically to idmap_child().
1209 * The sequence is, fork_child_dc_connect() ---> getdcs() --->
1210 * get_dc_name_via_netlogon() ---> cm_connect_netlogon()
1211 * ---> init_dc_connection() ---> cm_open_connection --->
1212 * set_domain_online(), sends MSG_WINBIND_ONLINE to
1213 * idmap_child(). Disallow children sending messages
1214 * to each other, all messages must go through the parent.
1223 * In a child there will be only one domain, reference that here.
1225 static struct winbindd_domain
*child_domain
;
1227 struct winbindd_domain
*wb_child_domain(void)
1229 return child_domain
;
1232 static bool fork_domain_child(struct winbindd_child
*child
)
1235 struct winbindd_cli_state state
;
1236 struct winbindd_request request
;
1237 struct winbindd_response response
;
1238 struct winbindd_domain
*primary_domain
= NULL
;
1240 if (child
->domain
) {
1241 DEBUG(10, ("fork_domain_child called for domain '%s'\n",
1242 child
->domain
->name
));
1244 DEBUG(10, ("fork_domain_child called without domain.\n"));
1247 if (socketpair(AF_UNIX
, SOCK_STREAM
, 0, fdpair
) != 0) {
1248 DEBUG(0, ("Could not open child pipe: %s\n",
1254 state
.pid
= sys_getpid();
1255 state
.request
= &request
;
1256 state
.response
= &response
;
1258 child
->pid
= sys_fork();
1260 if (child
->pid
== -1) {
1261 DEBUG(0, ("Could not fork: %s\n", strerror(errno
)));
1265 if (child
->pid
!= 0) {
1268 child
->next
= child
->prev
= NULL
;
1269 DLIST_ADD(winbindd_children
, child
);
1270 child
->sock
= fdpair
[1];
1275 child_domain
= child
->domain
;
1277 DEBUG(10, ("Child process %d\n", (int)sys_getpid()));
1279 state
.sock
= fdpair
[0];
1282 if (!winbindd_reinit_after_fork(child
->logfilename
)) {
1286 /* Handle online/offline messages. */
1287 messaging_register(winbind_messaging_context(), NULL
,
1288 MSG_WINBIND_OFFLINE
, child_msg_offline
);
1289 messaging_register(winbind_messaging_context(), NULL
,
1290 MSG_WINBIND_ONLINE
, child_msg_online
);
1291 messaging_register(winbind_messaging_context(), NULL
,
1292 MSG_DUMP_EVENT_LIST
, child_msg_dump_event_list
);
1293 messaging_register(winbind_messaging_context(), NULL
,
1294 MSG_DEBUG
, debug_message
);
1296 primary_domain
= find_our_domain();
1298 if (primary_domain
== NULL
) {
1299 smb_panic("no primary domain found");
1302 /* It doesn't matter if we allow cache login,
1303 * try to bring domain online after fork. */
1304 if ( child
->domain
) {
1305 child
->domain
->startup
= True
;
1306 child
->domain
->startup_time
= time(NULL
);
1307 /* we can be in primary domain or in trusted domain
1308 * If we are in trusted domain, set the primary domain
1309 * in start-up mode */
1310 if (!(child
->domain
->internal
)) {
1311 set_domain_online_request(child
->domain
);
1312 if (!(child
->domain
->primary
)) {
1313 primary_domain
->startup
= True
;
1314 primary_domain
->startup_time
= time(NULL
);
1315 set_domain_online_request(primary_domain
);
1321 * We are in idmap child, make sure that we set the
1322 * check_online_event to bring primary domain online.
1324 if (child
== idmap_child()) {
1325 set_domain_online_request(primary_domain
);
1328 /* We might be in the idmap child...*/
1329 if (child
->domain
&& !(child
->domain
->internal
) &&
1330 lp_winbind_offline_logon()) {
1332 set_domain_online_request(child
->domain
);
1334 if (primary_domain
&& (primary_domain
!= child
->domain
)) {
1335 /* We need to talk to the primary
1336 * domain as well as the trusted
1337 * domain inside a trusted domain
1340 * set_dc_type_and_flags_trustinfo()
1343 set_domain_online_request(primary_domain
);
1346 child
->lockout_policy_event
= event_add_timed(
1347 winbind_event_context(), NULL
, timeval_zero(),
1348 account_lockout_policy_handler
,
1352 if (child
->domain
&& child
->domain
->primary
&&
1353 !USE_KERBEROS_KEYTAB
&&
1354 lp_server_role() == ROLE_DOMAIN_MEMBER
) {
1356 struct timeval next_change
;
1358 if (calculate_next_machine_pwd_change(child
->domain
->name
,
1360 child
->machine_password_change_event
= event_add_timed(
1361 winbind_event_context(), NULL
, next_change
,
1362 machine_password_change_handler
,
1376 TALLOC_CTX
*frame
= talloc_stackframe();
1377 struct iovec iov
[2];
1381 if (run_events(winbind_event_context(), 0, NULL
, NULL
)) {
1388 if (child
->domain
&& child
->domain
->startup
&&
1389 (now
.tv_sec
> child
->domain
->startup_time
+ 30)) {
1390 /* No longer in "startup" mode. */
1391 DEBUG(10,("fork_domain_child: domain %s no longer in 'startup' mode.\n",
1392 child
->domain
->name
));
1393 child
->domain
->startup
= False
;
1398 FD_SET(state
.sock
, &r_fds
);
1402 * Initialize this high as event_add_to_select_args()
1403 * uses a timeval_min() on this and next_event. Fix
1404 * from Roel van Meer <rolek@alt001.com>.
1409 event_add_to_select_args(winbind_event_context(), &now
,
1410 &r_fds
, &w_fds
, &t
, &maxfd
);
1411 tp
= get_timed_events_timeout(winbind_event_context(), &t
);
1413 DEBUG(11,("select will use timeout of %u.%u seconds\n",
1414 (unsigned int)tp
->tv_sec
, (unsigned int)tp
->tv_usec
));
1417 ret
= sys_select(maxfd
+ 1, &r_fds
, &w_fds
, NULL
, tp
);
1419 if (run_events(winbind_event_context(), ret
, &r_fds
, &w_fds
)) {
1420 /* We got a signal - continue. */
1426 DEBUG(11,("nothing is ready yet, continue\n"));
1431 if (ret
== -1 && errno
== EINTR
) {
1432 /* We got a signal - continue. */
1437 if (ret
== -1 && errno
!= EINTR
) {
1438 DEBUG(0,("select error occured\n"));
1444 /* fetch a request from the main daemon */
1445 status
= child_read_request(&state
);
1447 if (!NT_STATUS_IS_OK(status
)) {
1448 /* we lost contact with our parent */
1452 DEBUG(4,("child daemon request %d\n", (int)state
.request
->cmd
));
1454 ZERO_STRUCTP(state
.response
);
1455 state
.request
->null_term
= '\0';
1456 state
.mem_ctx
= frame
;
1457 child_process_request(child
, &state
);
1459 DEBUG(4, ("Finished processing child request %d\n",
1460 (int)state
.request
->cmd
));
1462 SAFE_FREE(state
.request
->extra_data
.data
);
1464 iov
[0].iov_base
= (void *)state
.response
;
1465 iov
[0].iov_len
= sizeof(struct winbindd_response
);
1468 if (state
.response
->length
> sizeof(struct winbindd_response
)) {
1470 (void *)state
.response
->extra_data
.data
;
1471 iov
[1].iov_len
= state
.response
->length
-iov
[0].iov_len
;
1475 DEBUG(10, ("Writing %d bytes to parent\n",
1476 (int)state
.response
->length
));
1478 if (write_data_iov(state
.sock
, iov
, iov_count
) !=
1479 state
.response
->length
) {
1480 DEBUG(0, ("Could not write result\n"));