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"
35 #define DBGC_CLASS DBGC_WINBIND
37 extern bool override_logfile
;
38 extern struct winbindd_methods cache_methods
;
40 /* Read some data from a client connection */
42 static void child_read_request(struct winbindd_cli_state
*state
)
48 status
= read_data(state
->sock
, (char *)state
->request
,
49 sizeof(*state
->request
));
51 if (!NT_STATUS_IS_OK(status
)) {
52 DEBUG(3, ("child_read_request: read_data failed: %s\n",
54 state
->finished
= True
;
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 state
->finished
= True
;
74 /* Ensure null termination */
75 state
->request
->extra_data
.data
[state
->request
->extra_len
] = '\0';
77 status
= read_data(state
->sock
, state
->request
->extra_data
.data
,
78 state
->request
->extra_len
);
80 if (!NT_STATUS_IS_OK(status
)) {
81 DEBUG(0, ("Could not read extra data: %s\n",
83 state
->finished
= True
;
89 * Do winbind child async request. This is not simply wb_simple_trans. We have
90 * to do the queueing ourselves because while a request is queued, the child
91 * might have crashed, and we have to re-fork it in the _trigger function.
94 struct wb_child_request_state
{
95 struct tevent_context
*ev
;
96 struct winbindd_child
*child
;
97 struct winbindd_request
*request
;
98 struct winbindd_response
*response
;
101 static bool fork_domain_child(struct winbindd_child
*child
);
103 static void wb_child_request_trigger(struct tevent_req
*req
,
105 static void wb_child_request_done(struct tevent_req
*subreq
);
107 struct tevent_req
*wb_child_request_send(TALLOC_CTX
*mem_ctx
,
108 struct tevent_context
*ev
,
109 struct winbindd_child
*child
,
110 struct winbindd_request
*request
)
112 struct tevent_req
*req
;
113 struct wb_child_request_state
*state
;
115 req
= tevent_req_create(mem_ctx
, &state
,
116 struct wb_child_request_state
);
122 state
->child
= child
;
123 state
->request
= request
;
125 if (!tevent_queue_add(child
->queue
, ev
, req
,
126 wb_child_request_trigger
, NULL
)) {
127 tevent_req_nomem(NULL
, req
);
128 return tevent_req_post(req
, ev
);
133 static void wb_child_request_trigger(struct tevent_req
*req
,
136 struct wb_child_request_state
*state
= tevent_req_data(
137 req
, struct wb_child_request_state
);
138 struct tevent_req
*subreq
;
140 if ((state
->child
->pid
== 0) && (!fork_domain_child(state
->child
))) {
141 tevent_req_error(req
, errno
);
145 subreq
= wb_simple_trans_send(state
, winbind_event_context(), NULL
,
146 state
->child
->sock
, state
->request
);
147 if (tevent_req_nomem(subreq
, req
)) {
150 tevent_req_set_callback(subreq
, wb_child_request_done
, req
);
152 if (!tevent_req_set_endtime(req
, state
->ev
,
153 timeval_current_ofs(300, 0))) {
154 tevent_req_nomem(NULL
, req
);
159 static void wb_child_request_done(struct tevent_req
*subreq
)
161 struct tevent_req
*req
= tevent_req_callback_data(
162 subreq
, struct tevent_req
);
163 struct wb_child_request_state
*state
= tevent_req_data(
164 req
, struct wb_child_request_state
);
167 ret
= wb_simple_trans_recv(subreq
, state
, &state
->response
, &err
);
170 tevent_req_error(req
, err
);
173 tevent_req_done(req
);
176 int wb_child_request_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
177 struct winbindd_response
**presponse
, int *err
)
179 struct wb_child_request_state
*state
= tevent_req_data(
180 req
, struct wb_child_request_state
);
182 if (tevent_req_is_unix_error(req
, err
)) {
185 if (state
->response
->result
!= WINBINDD_OK
) {
186 *err
= EIO
; /* EIO doesn't fit, but what would be better? */
189 *presponse
= talloc_move(mem_ctx
, &state
->response
);
193 struct wb_domain_request_state
{
194 struct tevent_context
*ev
;
195 struct winbindd_domain
*domain
;
196 struct winbindd_request
*request
;
197 struct winbindd_request
*init_req
;
198 struct winbindd_response
*response
;
201 static void wb_domain_request_gotdc(struct tevent_req
*subreq
);
202 static void wb_domain_request_initialized(struct tevent_req
*subreq
);
203 static void wb_domain_request_done(struct tevent_req
*subreq
);
205 struct tevent_req
*wb_domain_request_send(TALLOC_CTX
*mem_ctx
,
206 struct tevent_context
*ev
,
207 struct winbindd_domain
*domain
,
208 struct winbindd_request
*request
)
210 struct tevent_req
*req
, *subreq
;
211 struct wb_domain_request_state
*state
;
213 req
= tevent_req_create(mem_ctx
, &state
,
214 struct wb_domain_request_state
);
219 if (domain
->initialized
) {
220 subreq
= wb_child_request_send(state
, ev
, &domain
->child
,
222 if (tevent_req_nomem(subreq
, req
)) {
223 return tevent_req_post(req
, ev
);
225 tevent_req_set_callback(subreq
, wb_domain_request_done
, req
);
229 state
->domain
= domain
;
231 state
->request
= request
;
233 state
->init_req
= talloc_zero(state
, struct winbindd_request
);
234 if (tevent_req_nomem(state
->init_req
, req
)) {
235 return tevent_req_post(req
, ev
);
238 if (IS_DC
|| domain
->primary
|| domain
->internal
) {
239 /* The primary domain has to find the DC name itself */
240 state
->init_req
->cmd
= WINBINDD_INIT_CONNECTION
;
241 fstrcpy(state
->init_req
->domain_name
, domain
->name
);
242 state
->init_req
->data
.init_conn
.is_primary
=
243 domain
->primary
? true : false;
244 fstrcpy(state
->init_req
->data
.init_conn
.dcname
, "");
246 subreq
= wb_child_request_send(state
, ev
, &domain
->child
,
248 if (tevent_req_nomem(subreq
, req
)) {
249 return tevent_req_post(req
, ev
);
251 tevent_req_set_callback(subreq
, wb_domain_request_initialized
,
257 * Ask our DC for a DC name
259 domain
= find_our_domain();
261 /* This is *not* the primary domain, let's ask our DC about a DC
264 state
->init_req
->cmd
= WINBINDD_GETDCNAME
;
265 fstrcpy(state
->init_req
->domain_name
, domain
->name
);
267 subreq
= wb_child_request_send(state
, ev
, &domain
->child
, request
);
268 if (tevent_req_nomem(subreq
, req
)) {
269 return tevent_req_post(req
, ev
);
271 tevent_req_set_callback(subreq
, wb_domain_request_gotdc
, req
);
275 static void wb_domain_request_gotdc(struct tevent_req
*subreq
)
277 struct tevent_req
*req
= tevent_req_callback_data(
278 subreq
, struct tevent_req
);
279 struct wb_domain_request_state
*state
= tevent_req_data(
280 req
, struct wb_domain_request_state
);
281 struct winbindd_response
*response
;
284 ret
= wb_child_request_recv(subreq
, talloc_tos(), &response
, &err
);
287 tevent_req_error(req
, err
);
290 state
->init_req
->cmd
= WINBINDD_INIT_CONNECTION
;
291 fstrcpy(state
->init_req
->domain_name
, state
->domain
->name
);
292 state
->init_req
->data
.init_conn
.is_primary
= False
;
293 fstrcpy(state
->init_req
->data
.init_conn
.dcname
,
294 response
->data
.dc_name
);
296 TALLOC_FREE(response
);
298 subreq
= wb_child_request_send(state
, state
->ev
, &state
->domain
->child
,
300 if (tevent_req_nomem(subreq
, req
)) {
303 tevent_req_set_callback(subreq
, wb_domain_request_initialized
, req
);
306 static void wb_domain_request_initialized(struct tevent_req
*subreq
)
308 struct tevent_req
*req
= tevent_req_callback_data(
309 subreq
, struct tevent_req
);
310 struct wb_domain_request_state
*state
= tevent_req_data(
311 req
, struct wb_domain_request_state
);
312 struct winbindd_response
*response
;
315 ret
= wb_child_request_recv(subreq
, talloc_tos(), &response
, &err
);
318 tevent_req_error(req
, err
);
322 if (!string_to_sid(&state
->domain
->sid
,
323 response
->data
.domain_info
.sid
)) {
324 DEBUG(1,("init_child_recv: Could not convert sid %s "
325 "from string\n", response
->data
.domain_info
.sid
));
326 tevent_req_error(req
, EINVAL
);
329 fstrcpy(state
->domain
->name
, response
->data
.domain_info
.name
);
330 fstrcpy(state
->domain
->alt_name
, response
->data
.domain_info
.alt_name
);
331 state
->domain
->native_mode
= response
->data
.domain_info
.native_mode
;
332 state
->domain
->active_directory
=
333 response
->data
.domain_info
.active_directory
;
334 state
->domain
->initialized
= true;
336 TALLOC_FREE(response
);
338 subreq
= wb_child_request_send(state
, state
->ev
, &state
->domain
->child
,
340 if (tevent_req_nomem(subreq
, req
)) {
343 tevent_req_set_callback(subreq
, wb_domain_request_done
, req
);
346 static void wb_domain_request_done(struct tevent_req
*subreq
)
348 struct tevent_req
*req
= tevent_req_callback_data(
349 subreq
, struct tevent_req
);
350 struct wb_domain_request_state
*state
= tevent_req_data(
351 req
, struct wb_domain_request_state
);
354 ret
= wb_child_request_recv(subreq
, talloc_tos(), &state
->response
,
358 tevent_req_error(req
, err
);
361 tevent_req_done(req
);
364 int wb_domain_request_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
365 struct winbindd_response
**presponse
, int *err
)
367 struct wb_domain_request_state
*state
= tevent_req_data(
368 req
, struct wb_domain_request_state
);
370 if (tevent_req_is_unix_error(req
, err
)) {
373 *presponse
= talloc_move(mem_ctx
, &state
->response
);
378 * Machinery for async requests sent to children. You set up a
379 * winbindd_request, select a child to query, and issue a async_request
380 * call. When the request is completed, the callback function you specified is
381 * called back with the private pointer you gave to async_request.
384 struct winbindd_async_request
{
385 struct winbindd_async_request
*next
, *prev
;
387 struct winbindd_child
*child
;
388 struct winbindd_response
*response
;
389 void (*continuation
)(void *private_data
, bool success
);
390 struct timed_event
*reply_timeout_event
;
391 pid_t child_pid
; /* pid of the child we're waiting on. Used to detect
392 a restart of the child (child->pid != child_pid). */
396 static bool fork_domain_child(struct winbindd_child
*child
);
397 static void async_request_done(struct tevent_req
*req
);
399 void async_request(TALLOC_CTX
*mem_ctx
, struct winbindd_child
*child
,
400 struct winbindd_request
*request
,
401 struct winbindd_response
*response
,
402 void (*continuation
)(void *private_data
, bool success
),
405 struct winbindd_async_request
*state
;
406 struct tevent_req
*req
;
408 DEBUG(10, ("Sending request to child pid %d (domain=%s)\n",
410 (child
->domain
!= NULL
) ? child
->domain
->name
: "''"));
412 state
= talloc(mem_ctx
, struct winbindd_async_request
);
414 DEBUG(0, ("talloc failed\n"));
415 continuation(private_data
, False
);
419 state
->mem_ctx
= mem_ctx
;
420 state
->child
= child
;
421 state
->reply_timeout_event
= NULL
;
422 state
->response
= response
;
423 state
->continuation
= continuation
;
424 state
->private_data
= private_data
;
426 request
->pid
= child
->pid
;
428 req
= wb_child_request_send(state
, winbind_event_context(),
431 DEBUG(0, ("wb_child_request_send failed\n"));
432 continuation(private_data
, false);
435 tevent_req_set_callback(req
, async_request_done
, state
);
438 static void async_request_done(struct tevent_req
*req
)
440 struct winbindd_async_request
*state
= tevent_req_callback_data(
441 req
, struct winbindd_async_request
);
442 struct winbindd_response
*response
;
445 ret
= wb_child_request_recv(req
, state
, &response
, &err
);
448 DEBUG(2, ("wb_child_request_recv failed: %s\n",
450 state
->continuation(state
->private_data
, false);
453 *state
->response
= *response
;
454 state
->continuation(state
->private_data
, true);
457 struct domain_request_state
{
458 struct winbindd_domain
*domain
;
459 struct winbindd_request
*request
;
460 struct winbindd_response
*response
;
461 void (*continuation
)(void *private_data_data
, bool success
);
462 void *private_data_data
;
465 static void async_domain_request_done(struct tevent_req
*req
);
467 void async_domain_request(TALLOC_CTX
*mem_ctx
,
468 struct winbindd_domain
*domain
,
469 struct winbindd_request
*request
,
470 struct winbindd_response
*response
,
471 void (*continuation
)(void *private_data_data
, bool success
),
472 void *private_data_data
)
474 struct tevent_req
*subreq
;
475 struct domain_request_state
*state
;
477 state
= TALLOC_P(mem_ctx
, struct domain_request_state
);
479 DEBUG(0, ("talloc failed\n"));
480 continuation(private_data_data
, False
);
484 state
->domain
= domain
;
485 state
->request
= request
;
486 state
->response
= response
;
487 state
->continuation
= continuation
;
488 state
->private_data_data
= private_data_data
;
490 subreq
= wb_domain_request_send(state
, winbind_event_context(),
492 if (subreq
== NULL
) {
493 DEBUG(5, ("wb_domain_request_send failed\n"));
494 continuation(private_data_data
, false);
497 tevent_req_set_callback(subreq
, async_domain_request_done
, state
);
500 static void async_domain_request_done(struct tevent_req
*req
)
502 struct domain_request_state
*state
= tevent_req_callback_data(
503 req
, struct domain_request_state
);
504 struct winbindd_response
*response
;
507 ret
= wb_domain_request_recv(req
, state
, &response
, &err
);
510 DEBUG(5, ("wb_domain_request returned %s\n", strerror(errno
)));
511 state
->continuation(state
->private_data_data
, false);
514 *(state
->response
) = *response
;
515 state
->continuation(state
->private_data_data
, true);
518 static void recvfrom_child(void *private_data_data
, bool success
)
520 struct winbindd_cli_state
*state
=
521 talloc_get_type_abort(private_data_data
, struct winbindd_cli_state
);
522 enum winbindd_result result
= state
->response
.result
;
524 /* This is an optimization: The child has written directly to the
525 * response buffer. The request itself is still in pending state,
526 * state that in the result code. */
528 state
->response
.result
= WINBINDD_PENDING
;
530 if ((!success
) || (result
!= WINBINDD_OK
)) {
531 request_error(state
);
538 void sendto_child(struct winbindd_cli_state
*state
,
539 struct winbindd_child
*child
)
541 async_request(state
->mem_ctx
, child
, state
->request
,
542 &state
->response
, recvfrom_child
, state
);
545 void sendto_domain(struct winbindd_cli_state
*state
,
546 struct winbindd_domain
*domain
)
548 async_domain_request(state
->mem_ctx
, domain
,
549 state
->request
, &state
->response
,
550 recvfrom_child
, state
);
553 static void child_process_request(struct winbindd_child
*child
,
554 struct winbindd_cli_state
*state
)
556 struct winbindd_domain
*domain
= child
->domain
;
557 const struct winbindd_child_dispatch_table
*table
= child
->table
;
559 /* Free response data - we may be interrupted and receive another
560 command before being able to send this data off. */
562 state
->response
.result
= WINBINDD_ERROR
;
563 state
->response
.length
= sizeof(struct winbindd_response
);
565 /* as all requests in the child are sync, we can use talloc_tos() */
566 state
->mem_ctx
= talloc_tos();
568 /* Process command */
570 for (; table
->name
; table
++) {
571 if (state
->request
->cmd
== table
->struct_cmd
) {
572 DEBUG(10,("child_process_request: request fn %s\n",
574 state
->response
.result
= table
->struct_fn(domain
, state
);
579 DEBUG(1 ,("child_process_request: unknown request fn number %d\n",
580 (int)state
->request
->cmd
));
581 state
->response
.result
= WINBINDD_ERROR
;
584 void setup_child(struct winbindd_child
*child
,
585 const struct winbindd_child_dispatch_table
*table
,
586 const char *logprefix
,
589 if (logprefix
&& logname
) {
590 if (asprintf(&child
->logfilename
, "%s/%s-%s",
591 get_dyn_LOGFILEBASE(), logprefix
, logname
) < 0) {
592 smb_panic("Internal error: asprintf failed");
595 smb_panic("Internal error: logprefix == NULL && "
599 child
->domain
= NULL
;
600 child
->table
= table
;
601 child
->queue
= tevent_queue_create(NULL
, "winbind_child");
602 SMB_ASSERT(child
->queue
!= NULL
);
605 struct winbindd_child
*children
= NULL
;
607 void winbind_child_died(pid_t pid
)
609 struct winbindd_child
*child
;
611 for (child
= children
; child
!= NULL
; child
= child
->next
) {
612 if (child
->pid
== pid
) {
618 DEBUG(5, ("Already reaped child %u died\n", (unsigned int)pid
));
622 /* This will be re-added in fork_domain_child() */
624 DLIST_REMOVE(children
, child
);
631 /* Ensure any negative cache entries with the netbios or realm names are removed. */
633 void winbindd_flush_negative_conn_cache(struct winbindd_domain
*domain
)
635 flush_negative_conn_cache_for_domain(domain
->name
);
636 if (*domain
->alt_name
) {
637 flush_negative_conn_cache_for_domain(domain
->alt_name
);
642 * Parent winbindd process sets its own debug level first and then
643 * sends a message to all the winbindd children to adjust their debug
644 * level to that of parents.
647 void winbind_msg_debug(struct messaging_context
*msg_ctx
,
650 struct server_id server_id
,
653 struct winbindd_child
*child
;
655 DEBUG(10,("winbind_msg_debug: got debug message.\n"));
657 debug_message(msg_ctx
, private_data
, MSG_DEBUG
, server_id
, data
);
659 for (child
= children
; child
!= NULL
; child
= child
->next
) {
661 DEBUG(10,("winbind_msg_debug: sending message to pid %u.\n",
662 (unsigned int)child
->pid
));
664 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
667 strlen((char *) data
->data
) + 1);
671 /* Set our domains as offline and forward the offline message to our children. */
673 void winbind_msg_offline(struct messaging_context
*msg_ctx
,
676 struct server_id server_id
,
679 struct winbindd_child
*child
;
680 struct winbindd_domain
*domain
;
682 DEBUG(10,("winbind_msg_offline: got offline message.\n"));
684 if (!lp_winbind_offline_logon()) {
685 DEBUG(10,("winbind_msg_offline: rejecting offline message.\n"));
689 /* Set our global state as offline. */
690 if (!set_global_winbindd_state_offline()) {
691 DEBUG(10,("winbind_msg_offline: offline request failed.\n"));
695 /* Set all our domains as offline. */
696 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
697 if (domain
->internal
) {
700 DEBUG(5,("winbind_msg_offline: marking %s offline.\n", domain
->name
));
701 set_domain_offline(domain
);
704 for (child
= children
; child
!= NULL
; child
= child
->next
) {
705 /* Don't send message to internal childs. We've already
707 if (!child
->domain
|| winbindd_internal_child(child
)) {
711 /* Or internal domains (this should not be possible....) */
712 if (child
->domain
->internal
) {
716 /* Each winbindd child should only process requests for one domain - make sure
717 we only set it online / offline for that domain. */
719 DEBUG(10,("winbind_msg_offline: sending message to pid %u for domain %s.\n",
720 (unsigned int)child
->pid
, domain
->name
));
722 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
724 (uint8
*)child
->domain
->name
,
725 strlen(child
->domain
->name
)+1);
729 /* Set our domains as online and forward the online message to our children. */
731 void winbind_msg_online(struct messaging_context
*msg_ctx
,
734 struct server_id server_id
,
737 struct winbindd_child
*child
;
738 struct winbindd_domain
*domain
;
740 DEBUG(10,("winbind_msg_online: got online message.\n"));
742 if (!lp_winbind_offline_logon()) {
743 DEBUG(10,("winbind_msg_online: rejecting online message.\n"));
747 /* Set our global state as online. */
748 set_global_winbindd_state_online();
750 smb_nscd_flush_user_cache();
751 smb_nscd_flush_group_cache();
753 /* Set all our domains as online. */
754 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
755 if (domain
->internal
) {
758 DEBUG(5,("winbind_msg_online: requesting %s to go online.\n", domain
->name
));
760 winbindd_flush_negative_conn_cache(domain
);
761 set_domain_online_request(domain
);
763 /* Send an online message to the idmap child when our
764 primary domain comes back online */
766 if ( domain
->primary
) {
767 struct winbindd_child
*idmap
= idmap_child();
769 if ( idmap
->pid
!= 0 ) {
770 messaging_send_buf(msg_ctx
,
771 pid_to_procid(idmap
->pid
),
773 (uint8
*)domain
->name
,
774 strlen(domain
->name
)+1);
779 for (child
= children
; child
!= NULL
; child
= child
->next
) {
780 /* Don't send message to internal childs. */
781 if (!child
->domain
|| winbindd_internal_child(child
)) {
785 /* Or internal domains (this should not be possible....) */
786 if (child
->domain
->internal
) {
790 /* Each winbindd child should only process requests for one domain - make sure
791 we only set it online / offline for that domain. */
793 DEBUG(10,("winbind_msg_online: sending message to pid %u for domain %s.\n",
794 (unsigned int)child
->pid
, child
->domain
->name
));
796 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
798 (uint8
*)child
->domain
->name
,
799 strlen(child
->domain
->name
)+1);
803 static const char *collect_onlinestatus(TALLOC_CTX
*mem_ctx
)
805 struct winbindd_domain
*domain
;
808 if ((buf
= talloc_asprintf(mem_ctx
, "global:%s ",
809 get_global_winbindd_state_offline() ?
810 "Offline":"Online")) == NULL
) {
814 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
815 if ((buf
= talloc_asprintf_append_buffer(buf
, "%s:%s ",
818 "Online":"Offline")) == NULL
) {
823 buf
= talloc_asprintf_append_buffer(buf
, "\n");
825 DEBUG(5,("collect_onlinestatus: %s", buf
));
830 void winbind_msg_onlinestatus(struct messaging_context
*msg_ctx
,
833 struct server_id server_id
,
838 struct server_id
*sender
;
840 DEBUG(5,("winbind_msg_onlinestatus received.\n"));
846 sender
= (struct server_id
*)data
->data
;
848 mem_ctx
= talloc_init("winbind_msg_onlinestatus");
849 if (mem_ctx
== NULL
) {
853 message
= collect_onlinestatus(mem_ctx
);
854 if (message
== NULL
) {
855 talloc_destroy(mem_ctx
);
859 messaging_send_buf(msg_ctx
, *sender
, MSG_WINBIND_ONLINESTATUS
,
860 (uint8
*)message
, strlen(message
) + 1);
862 talloc_destroy(mem_ctx
);
865 void winbind_msg_dump_event_list(struct messaging_context
*msg_ctx
,
868 struct server_id server_id
,
871 struct winbindd_child
*child
;
873 DEBUG(10,("winbind_msg_dump_event_list received\n"));
875 dump_event_list(winbind_event_context());
877 for (child
= children
; child
!= NULL
; child
= child
->next
) {
879 DEBUG(10,("winbind_msg_dump_event_list: sending message to pid %u\n",
880 (unsigned int)child
->pid
));
882 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
889 void winbind_msg_dump_domain_list(struct messaging_context
*msg_ctx
,
892 struct server_id server_id
,
896 const char *message
= NULL
;
897 struct server_id
*sender
= NULL
;
898 const char *domain
= NULL
;
901 struct winbindd_domain
*dom
= NULL
;
903 DEBUG(5,("winbind_msg_dump_domain_list received.\n"));
905 if (!data
|| !data
->data
) {
909 if (data
->length
< sizeof(struct server_id
)) {
913 mem_ctx
= talloc_init("winbind_msg_dump_domain_list");
918 sender
= (struct server_id
*)data
->data
;
919 if (data
->length
> sizeof(struct server_id
)) {
920 domain
= (const char *)data
->data
+sizeof(struct server_id
);
925 DEBUG(5,("winbind_msg_dump_domain_list for domain: %s\n",
928 message
= NDR_PRINT_STRUCT_STRING(mem_ctx
, winbindd_domain
,
929 find_domain_from_name_noinit(domain
));
931 talloc_destroy(mem_ctx
);
935 messaging_send_buf(msg_ctx
, *sender
,
936 MSG_WINBIND_DUMP_DOMAIN_LIST
,
937 (uint8_t *)message
, strlen(message
) + 1);
939 talloc_destroy(mem_ctx
);
944 DEBUG(5,("winbind_msg_dump_domain_list all domains\n"));
946 for (dom
= domain_list(); dom
; dom
=dom
->next
) {
947 message
= NDR_PRINT_STRUCT_STRING(mem_ctx
, winbindd_domain
, dom
);
949 talloc_destroy(mem_ctx
);
953 s
= talloc_asprintf_append(s
, "%s\n", message
);
955 talloc_destroy(mem_ctx
);
960 status
= messaging_send_buf(msg_ctx
, *sender
,
961 MSG_WINBIND_DUMP_DOMAIN_LIST
,
962 (uint8_t *)s
, strlen(s
) + 1);
963 if (!NT_STATUS_IS_OK(status
)) {
964 DEBUG(0,("failed to send message: %s\n",
968 talloc_destroy(mem_ctx
);
971 static void account_lockout_policy_handler(struct event_context
*ctx
,
972 struct timed_event
*te
,
976 struct winbindd_child
*child
=
977 (struct winbindd_child
*)private_data
;
978 TALLOC_CTX
*mem_ctx
= NULL
;
979 struct winbindd_methods
*methods
;
980 struct samr_DomInfo12 lockout_policy
;
983 DEBUG(10,("account_lockout_policy_handler called\n"));
985 TALLOC_FREE(child
->lockout_policy_event
);
987 if ( !winbindd_can_contact_domain( child
->domain
) ) {
988 DEBUG(10,("account_lockout_policy_handler: Removing myself since I "
989 "do not have an incoming trust to domain %s\n",
990 child
->domain
->name
));
995 methods
= child
->domain
->methods
;
997 mem_ctx
= talloc_init("account_lockout_policy_handler ctx");
999 result
= NT_STATUS_NO_MEMORY
;
1001 result
= methods
->lockout_policy(child
->domain
, mem_ctx
, &lockout_policy
);
1003 TALLOC_FREE(mem_ctx
);
1005 if (!NT_STATUS_IS_OK(result
)) {
1006 DEBUG(10,("account_lockout_policy_handler: lockout_policy failed error %s\n",
1007 nt_errstr(result
)));
1010 child
->lockout_policy_event
= event_add_timed(winbind_event_context(), NULL
,
1011 timeval_current_ofs(3600, 0),
1012 account_lockout_policy_handler
,
1016 static time_t get_machine_password_timeout(void)
1018 /* until we have gpo support use lp setting */
1019 return lp_machine_password_timeout();
1022 static bool calculate_next_machine_pwd_change(const char *domain
,
1025 time_t pass_last_set_time
;
1030 pw
= secrets_fetch_machine_password(domain
,
1031 &pass_last_set_time
,
1035 DEBUG(0,("cannot fetch own machine password ????"));
1041 timeout
= get_machine_password_timeout();
1043 DEBUG(10,("machine password never expires\n"));
1047 if (time(NULL
) < (pass_last_set_time
+ timeout
)) {
1048 next_change
= pass_last_set_time
+ timeout
;
1049 DEBUG(10,("machine password still valid until: %s\n",
1050 http_timestring(talloc_tos(), next_change
)));
1051 *t
= timeval_set(next_change
, 0);
1055 DEBUG(10,("machine password expired, needs immediate change\n"));
1057 *t
= timeval_zero();
1062 static void machine_password_change_handler(struct event_context
*ctx
,
1063 struct timed_event
*te
,
1067 struct winbindd_child
*child
=
1068 (struct winbindd_child
*)private_data
;
1069 struct rpc_pipe_client
*netlogon_pipe
= NULL
;
1072 struct timeval next_change
;
1074 DEBUG(10,("machine_password_change_handler called\n"));
1076 TALLOC_FREE(child
->machine_password_change_event
);
1078 if (!calculate_next_machine_pwd_change(child
->domain
->name
,
1083 if (!winbindd_can_contact_domain(child
->domain
)) {
1084 DEBUG(10,("machine_password_change_handler: Removing myself since I "
1085 "do not have an incoming trust to domain %s\n",
1086 child
->domain
->name
));
1090 result
= cm_connect_netlogon(child
->domain
, &netlogon_pipe
);
1091 if (!NT_STATUS_IS_OK(result
)) {
1092 DEBUG(10,("machine_password_change_handler: "
1093 "failed to connect netlogon pipe: %s\n",
1094 nt_errstr(result
)));
1098 frame
= talloc_stackframe();
1100 result
= trust_pw_find_change_and_store_it(netlogon_pipe
,
1102 child
->domain
->name
);
1105 if (!NT_STATUS_IS_OK(result
)) {
1106 DEBUG(10,("machine_password_change_handler: "
1107 "failed to change machine password: %s\n",
1108 nt_errstr(result
)));
1110 DEBUG(10,("machine_password_change_handler: "
1111 "successfully changed machine password\n"));
1114 child
->machine_password_change_event
= event_add_timed(winbind_event_context(), NULL
,
1116 machine_password_change_handler
,
1120 /* Deal with a request to go offline. */
1122 static void child_msg_offline(struct messaging_context
*msg
,
1125 struct server_id server_id
,
1128 struct winbindd_domain
*domain
;
1129 struct winbindd_domain
*primary_domain
= NULL
;
1130 const char *domainname
= (const char *)data
->data
;
1132 if (data
->data
== NULL
|| data
->length
== 0) {
1136 DEBUG(5,("child_msg_offline received for domain %s.\n", domainname
));
1138 if (!lp_winbind_offline_logon()) {
1139 DEBUG(10,("child_msg_offline: rejecting offline message.\n"));
1143 primary_domain
= find_our_domain();
1145 /* Mark the requested domain offline. */
1147 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1148 if (domain
->internal
) {
1151 if (strequal(domain
->name
, domainname
)) {
1152 DEBUG(5,("child_msg_offline: marking %s offline.\n", domain
->name
));
1153 set_domain_offline(domain
);
1154 /* we are in the trusted domain, set the primary domain
1156 if (domain
!= primary_domain
) {
1157 set_domain_offline(primary_domain
);
1163 /* Deal with a request to go online. */
1165 static void child_msg_online(struct messaging_context
*msg
,
1168 struct server_id server_id
,
1171 struct winbindd_domain
*domain
;
1172 struct winbindd_domain
*primary_domain
= NULL
;
1173 const char *domainname
= (const char *)data
->data
;
1175 if (data
->data
== NULL
|| data
->length
== 0) {
1179 DEBUG(5,("child_msg_online received for domain %s.\n", domainname
));
1181 if (!lp_winbind_offline_logon()) {
1182 DEBUG(10,("child_msg_online: rejecting online message.\n"));
1186 primary_domain
= find_our_domain();
1188 /* Set our global state as online. */
1189 set_global_winbindd_state_online();
1191 /* Try and mark everything online - delete any negative cache entries
1192 to force a reconnect now. */
1194 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1195 if (domain
->internal
) {
1198 if (strequal(domain
->name
, domainname
)) {
1199 DEBUG(5,("child_msg_online: requesting %s to go online.\n", domain
->name
));
1200 winbindd_flush_negative_conn_cache(domain
);
1201 set_domain_online_request(domain
);
1203 /* we can be in trusted domain, which will contact primary domain
1204 * we have to bring primary domain online in trusted domain process
1205 * see, winbindd_dual_pam_auth() --> winbindd_dual_pam_auth_samlogon()
1206 * --> contact_domain = find_our_domain()
1208 if (domain
!= primary_domain
) {
1209 winbindd_flush_negative_conn_cache(primary_domain
);
1210 set_domain_online_request(primary_domain
);
1216 static void child_msg_dump_event_list(struct messaging_context
*msg
,
1219 struct server_id server_id
,
1222 DEBUG(5,("child_msg_dump_event_list received\n"));
1224 dump_event_list(winbind_event_context());
1227 bool winbindd_reinit_after_fork(const char *logfilename
)
1229 struct winbindd_domain
*domain
;
1230 struct winbindd_child
*cl
;
1232 if (!NT_STATUS_IS_OK(reinit_after_fork(winbind_messaging_context(),
1233 winbind_event_context(),
1235 DEBUG(0,("reinit_after_fork() failed\n"));
1239 close_conns_after_fork();
1241 if (!override_logfile
&& logfilename
) {
1242 lp_set_logfile(logfilename
);
1246 if (!winbindd_setup_sig_term_handler(false))
1248 if (!winbindd_setup_sig_hup_handler(override_logfile
? NULL
:
1252 /* Don't handle the same messages as our parent. */
1253 messaging_deregister(winbind_messaging_context(),
1254 MSG_SMB_CONF_UPDATED
, NULL
);
1255 messaging_deregister(winbind_messaging_context(),
1256 MSG_SHUTDOWN
, NULL
);
1257 messaging_deregister(winbind_messaging_context(),
1258 MSG_WINBIND_OFFLINE
, NULL
);
1259 messaging_deregister(winbind_messaging_context(),
1260 MSG_WINBIND_ONLINE
, NULL
);
1261 messaging_deregister(winbind_messaging_context(),
1262 MSG_WINBIND_ONLINESTATUS
, NULL
);
1263 messaging_deregister(winbind_messaging_context(),
1264 MSG_DUMP_EVENT_LIST
, NULL
);
1265 messaging_deregister(winbind_messaging_context(),
1266 MSG_WINBIND_DUMP_DOMAIN_LIST
, NULL
);
1267 messaging_deregister(winbind_messaging_context(),
1270 /* We have destroyed all events in the winbindd_event_context
1271 * in reinit_after_fork(), so clean out all possible pending
1272 * event pointers. */
1274 /* Deal with check_online_events. */
1276 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1277 TALLOC_FREE(domain
->check_online_event
);
1280 /* Ensure we're not handling a credential cache event inherited
1281 * from our parent. */
1283 ccache_remove_all_after_fork();
1285 /* Destroy all possible events in child list. */
1286 for (cl
= children
; cl
!= NULL
; cl
= cl
->next
) {
1287 TALLOC_FREE(cl
->lockout_policy_event
);
1288 TALLOC_FREE(cl
->machine_password_change_event
);
1290 /* Children should never be able to send
1291 * each other messages, all messages must
1292 * go through the parent.
1297 * This is a little tricky, children must not
1298 * send an MSG_WINBIND_ONLINE message to idmap_child().
1299 * If we are in a child of our primary domain or
1300 * in the process created by fork_child_dc_connect(),
1301 * and the primary domain cannot go online,
1302 * fork_child_dc_connection() sends MSG_WINBIND_ONLINE
1303 * periodically to idmap_child().
1305 * The sequence is, fork_child_dc_connect() ---> getdcs() --->
1306 * get_dc_name_via_netlogon() ---> cm_connect_netlogon()
1307 * ---> init_dc_connection() ---> cm_open_connection --->
1308 * set_domain_online(), sends MSG_WINBIND_ONLINE to
1309 * idmap_child(). Disallow children sending messages
1310 * to each other, all messages must go through the parent.
1318 static bool fork_domain_child(struct winbindd_child
*child
)
1321 struct winbindd_cli_state state
;
1322 struct winbindd_domain
*primary_domain
= NULL
;
1324 if (child
->domain
) {
1325 DEBUG(10, ("fork_domain_child called for domain '%s'\n",
1326 child
->domain
->name
));
1328 DEBUG(10, ("fork_domain_child called without domain.\n"));
1331 if (socketpair(AF_UNIX
, SOCK_STREAM
, 0, fdpair
) != 0) {
1332 DEBUG(0, ("Could not open child pipe: %s\n",
1338 state
.pid
= sys_getpid();
1339 state
.request
= &state
._request
;
1341 child
->pid
= sys_fork();
1343 if (child
->pid
== -1) {
1344 DEBUG(0, ("Could not fork: %s\n", strerror(errno
)));
1348 if (child
->pid
!= 0) {
1351 child
->next
= child
->prev
= NULL
;
1352 DLIST_ADD(children
, child
);
1353 child
->sock
= fdpair
[1];
1359 DEBUG(10, ("Child process %d\n", (int)sys_getpid()));
1361 /* Stop zombies in children */
1364 state
.sock
= fdpair
[0];
1367 if (!winbindd_reinit_after_fork(child
->logfilename
)) {
1371 /* Handle online/offline messages. */
1372 messaging_register(winbind_messaging_context(), NULL
,
1373 MSG_WINBIND_OFFLINE
, child_msg_offline
);
1374 messaging_register(winbind_messaging_context(), NULL
,
1375 MSG_WINBIND_ONLINE
, child_msg_online
);
1376 messaging_register(winbind_messaging_context(), NULL
,
1377 MSG_DUMP_EVENT_LIST
, child_msg_dump_event_list
);
1378 messaging_register(winbind_messaging_context(), NULL
,
1379 MSG_DEBUG
, debug_message
);
1381 primary_domain
= find_our_domain();
1383 if (primary_domain
== NULL
) {
1384 smb_panic("no primary domain found");
1387 /* It doesn't matter if we allow cache login,
1388 * try to bring domain online after fork. */
1389 if ( child
->domain
) {
1390 child
->domain
->startup
= True
;
1391 child
->domain
->startup_time
= time(NULL
);
1392 /* we can be in primary domain or in trusted domain
1393 * If we are in trusted domain, set the primary domain
1394 * in start-up mode */
1395 if (!(child
->domain
->internal
)) {
1396 set_domain_online_request(child
->domain
);
1397 if (!(child
->domain
->primary
)) {
1398 primary_domain
->startup
= True
;
1399 primary_domain
->startup_time
= time(NULL
);
1400 set_domain_online_request(primary_domain
);
1406 * We are in idmap child, make sure that we set the
1407 * check_online_event to bring primary domain online.
1409 if (child
== idmap_child()) {
1410 set_domain_online_request(primary_domain
);
1413 /* We might be in the idmap child...*/
1414 if (child
->domain
&& !(child
->domain
->internal
) &&
1415 lp_winbind_offline_logon()) {
1417 set_domain_online_request(child
->domain
);
1419 if (primary_domain
&& (primary_domain
!= child
->domain
)) {
1420 /* We need to talk to the primary
1421 * domain as well as the trusted
1422 * domain inside a trusted domain
1425 * set_dc_type_and_flags_trustinfo()
1428 set_domain_online_request(primary_domain
);
1431 child
->lockout_policy_event
= event_add_timed(
1432 winbind_event_context(), NULL
, timeval_zero(),
1433 account_lockout_policy_handler
,
1437 if (child
->domain
&& child
->domain
->primary
&&
1438 !USE_KERBEROS_KEYTAB
&&
1439 lp_server_role() == ROLE_DOMAIN_MEMBER
) {
1441 struct timeval next_change
;
1443 if (calculate_next_machine_pwd_change(child
->domain
->name
,
1445 child
->machine_password_change_event
= event_add_timed(
1446 winbind_event_context(), NULL
, next_change
,
1447 machine_password_change_handler
,
1461 TALLOC_CTX
*frame
= talloc_stackframe();
1462 struct iovec iov
[2];
1465 if (run_events(winbind_event_context(), 0, NULL
, NULL
)) {
1472 if (child
->domain
&& child
->domain
->startup
&&
1473 (now
.tv_sec
> child
->domain
->startup_time
+ 30)) {
1474 /* No longer in "startup" mode. */
1475 DEBUG(10,("fork_domain_child: domain %s no longer in 'startup' mode.\n",
1476 child
->domain
->name
));
1477 child
->domain
->startup
= False
;
1482 FD_SET(state
.sock
, &r_fds
);
1485 event_add_to_select_args(winbind_event_context(), &now
,
1486 &r_fds
, &w_fds
, &t
, &maxfd
);
1487 tp
= get_timed_events_timeout(winbind_event_context(), &t
);
1489 DEBUG(11,("select will use timeout of %u.%u seconds\n",
1490 (unsigned int)tp
->tv_sec
, (unsigned int)tp
->tv_usec
));
1493 ret
= sys_select(maxfd
+ 1, &r_fds
, &w_fds
, NULL
, tp
);
1495 if (run_events(winbind_event_context(), ret
, &r_fds
, &w_fds
)) {
1496 /* We got a signal - continue. */
1502 DEBUG(11,("nothing is ready yet, continue\n"));
1507 if (ret
== -1 && errno
== EINTR
) {
1508 /* We got a signal - continue. */
1513 if (ret
== -1 && errno
!= EINTR
) {
1514 DEBUG(0,("select error occured\n"));
1520 /* fetch a request from the main daemon */
1521 child_read_request(&state
);
1523 if (state
.finished
) {
1524 /* we lost contact with our parent */
1528 DEBUG(4,("child daemon request %d\n", (int)state
.request
->cmd
));
1530 ZERO_STRUCT(state
.response
);
1531 state
.request
->null_term
= '\0';
1532 child_process_request(child
, &state
);
1534 DEBUG(4, ("Finished processing child request %d\n",
1535 (int)state
.request
->cmd
));
1537 SAFE_FREE(state
.request
->extra_data
.data
);
1539 iov
[0].iov_base
= (void *)&state
.response
;
1540 iov
[0].iov_len
= sizeof(struct winbindd_response
);
1543 if (state
.response
.length
> sizeof(struct winbindd_response
)) {
1545 (void *)state
.response
.extra_data
.data
;
1546 iov
[1].iov_len
= state
.response
.length
-iov
[0].iov_len
;
1550 DEBUG(10, ("Writing %d bytes to parent\n",
1551 (int)state
.response
.length
));
1553 if (write_data_iov(state
.sock
, iov
, iov_count
) !=
1554 state
.response
.length
) {
1555 DEBUG(0, ("Could not write result\n"));