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 NTSTATUS
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",
57 if (state
->request
->extra_len
== 0) {
58 state
->request
->extra_data
.data
= NULL
;
62 DEBUG(10, ("Need to read %d extra bytes\n", (int)state
->request
->extra_len
));
64 state
->request
->extra_data
.data
=
65 SMB_MALLOC_ARRAY(char, state
->request
->extra_len
+ 1);
67 if (state
->request
->extra_data
.data
== NULL
) {
68 DEBUG(0, ("malloc failed\n"));
69 return NT_STATUS_NO_MEMORY
;
72 /* Ensure null termination */
73 state
->request
->extra_data
.data
[state
->request
->extra_len
] = '\0';
75 status
= read_data(state
->sock
, state
->request
->extra_data
.data
,
76 state
->request
->extra_len
);
78 if (!NT_STATUS_IS_OK(status
)) {
79 DEBUG(0, ("Could not read extra data: %s\n",
86 * Do winbind child async request. This is not simply wb_simple_trans. We have
87 * to do the queueing ourselves because while a request is queued, the child
88 * might have crashed, and we have to re-fork it in the _trigger function.
91 struct wb_child_request_state
{
92 struct tevent_context
*ev
;
93 struct winbindd_child
*child
;
94 struct winbindd_request
*request
;
95 struct winbindd_response
*response
;
98 static bool fork_domain_child(struct winbindd_child
*child
);
100 static void wb_child_request_trigger(struct tevent_req
*req
,
102 static void wb_child_request_done(struct tevent_req
*subreq
);
104 struct tevent_req
*wb_child_request_send(TALLOC_CTX
*mem_ctx
,
105 struct tevent_context
*ev
,
106 struct winbindd_child
*child
,
107 struct winbindd_request
*request
)
109 struct tevent_req
*req
;
110 struct wb_child_request_state
*state
;
112 req
= tevent_req_create(mem_ctx
, &state
,
113 struct wb_child_request_state
);
119 state
->child
= child
;
120 state
->request
= request
;
122 if (!tevent_queue_add(child
->queue
, ev
, req
,
123 wb_child_request_trigger
, NULL
)) {
124 tevent_req_nomem(NULL
, req
);
125 return tevent_req_post(req
, ev
);
130 static void wb_child_request_trigger(struct tevent_req
*req
,
133 struct wb_child_request_state
*state
= tevent_req_data(
134 req
, struct wb_child_request_state
);
135 struct tevent_req
*subreq
;
137 if ((state
->child
->pid
== 0) && (!fork_domain_child(state
->child
))) {
138 tevent_req_error(req
, errno
);
142 subreq
= wb_simple_trans_send(state
, winbind_event_context(), NULL
,
143 state
->child
->sock
, state
->request
);
144 if (tevent_req_nomem(subreq
, req
)) {
147 tevent_req_set_callback(subreq
, wb_child_request_done
, req
);
149 if (!tevent_req_set_endtime(req
, state
->ev
,
150 timeval_current_ofs(300, 0))) {
151 tevent_req_nomem(NULL
, req
);
156 static void wb_child_request_done(struct tevent_req
*subreq
)
158 struct tevent_req
*req
= tevent_req_callback_data(
159 subreq
, struct tevent_req
);
160 struct wb_child_request_state
*state
= tevent_req_data(
161 req
, struct wb_child_request_state
);
164 ret
= wb_simple_trans_recv(subreq
, state
, &state
->response
, &err
);
167 tevent_req_error(req
, err
);
170 tevent_req_done(req
);
173 int wb_child_request_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
174 struct winbindd_response
**presponse
, int *err
)
176 struct wb_child_request_state
*state
= tevent_req_data(
177 req
, struct wb_child_request_state
);
179 if (tevent_req_is_unix_error(req
, err
)) {
182 if (state
->response
->result
!= WINBINDD_OK
) {
183 *err
= EIO
; /* EIO doesn't fit, but what would be better? */
186 *presponse
= talloc_move(mem_ctx
, &state
->response
);
190 struct wb_domain_request_state
{
191 struct tevent_context
*ev
;
192 struct winbindd_domain
*domain
;
193 struct winbindd_request
*request
;
194 struct winbindd_request
*init_req
;
195 struct winbindd_response
*response
;
198 static void wb_domain_request_gotdc(struct tevent_req
*subreq
);
199 static void wb_domain_request_initialized(struct tevent_req
*subreq
);
200 static void wb_domain_request_done(struct tevent_req
*subreq
);
202 struct tevent_req
*wb_domain_request_send(TALLOC_CTX
*mem_ctx
,
203 struct tevent_context
*ev
,
204 struct winbindd_domain
*domain
,
205 struct winbindd_request
*request
)
207 struct tevent_req
*req
, *subreq
;
208 struct wb_domain_request_state
*state
;
210 req
= tevent_req_create(mem_ctx
, &state
,
211 struct wb_domain_request_state
);
216 if (domain
->initialized
) {
217 subreq
= wb_child_request_send(state
, ev
, &domain
->child
,
219 if (tevent_req_nomem(subreq
, req
)) {
220 return tevent_req_post(req
, ev
);
222 tevent_req_set_callback(subreq
, wb_domain_request_done
, req
);
226 state
->domain
= domain
;
228 state
->request
= request
;
230 state
->init_req
= talloc_zero(state
, struct winbindd_request
);
231 if (tevent_req_nomem(state
->init_req
, req
)) {
232 return tevent_req_post(req
, ev
);
235 if (IS_DC
|| domain
->primary
|| domain
->internal
) {
236 /* The primary domain has to find the DC name itself */
237 state
->init_req
->cmd
= WINBINDD_INIT_CONNECTION
;
238 fstrcpy(state
->init_req
->domain_name
, domain
->name
);
239 state
->init_req
->data
.init_conn
.is_primary
=
240 domain
->primary
? true : false;
241 fstrcpy(state
->init_req
->data
.init_conn
.dcname
, "");
243 subreq
= wb_child_request_send(state
, ev
, &domain
->child
,
245 if (tevent_req_nomem(subreq
, req
)) {
246 return tevent_req_post(req
, ev
);
248 tevent_req_set_callback(subreq
, wb_domain_request_initialized
,
254 * Ask our DC for a DC name
256 domain
= find_our_domain();
258 /* This is *not* the primary domain, let's ask our DC about a DC
261 state
->init_req
->cmd
= WINBINDD_GETDCNAME
;
262 fstrcpy(state
->init_req
->domain_name
, domain
->name
);
264 subreq
= wb_child_request_send(state
, ev
, &domain
->child
, request
);
265 if (tevent_req_nomem(subreq
, req
)) {
266 return tevent_req_post(req
, ev
);
268 tevent_req_set_callback(subreq
, wb_domain_request_gotdc
, req
);
272 static void wb_domain_request_gotdc(struct tevent_req
*subreq
)
274 struct tevent_req
*req
= tevent_req_callback_data(
275 subreq
, struct tevent_req
);
276 struct wb_domain_request_state
*state
= tevent_req_data(
277 req
, struct wb_domain_request_state
);
278 struct winbindd_response
*response
;
281 ret
= wb_child_request_recv(subreq
, talloc_tos(), &response
, &err
);
284 tevent_req_error(req
, err
);
287 state
->init_req
->cmd
= WINBINDD_INIT_CONNECTION
;
288 fstrcpy(state
->init_req
->domain_name
, state
->domain
->name
);
289 state
->init_req
->data
.init_conn
.is_primary
= False
;
290 fstrcpy(state
->init_req
->data
.init_conn
.dcname
,
291 response
->data
.dc_name
);
293 TALLOC_FREE(response
);
295 subreq
= wb_child_request_send(state
, state
->ev
, &state
->domain
->child
,
297 if (tevent_req_nomem(subreq
, req
)) {
300 tevent_req_set_callback(subreq
, wb_domain_request_initialized
, req
);
303 static void wb_domain_request_initialized(struct tevent_req
*subreq
)
305 struct tevent_req
*req
= tevent_req_callback_data(
306 subreq
, struct tevent_req
);
307 struct wb_domain_request_state
*state
= tevent_req_data(
308 req
, struct wb_domain_request_state
);
309 struct winbindd_response
*response
;
312 ret
= wb_child_request_recv(subreq
, talloc_tos(), &response
, &err
);
315 tevent_req_error(req
, err
);
319 if (!string_to_sid(&state
->domain
->sid
,
320 response
->data
.domain_info
.sid
)) {
321 DEBUG(1,("init_child_recv: Could not convert sid %s "
322 "from string\n", response
->data
.domain_info
.sid
));
323 tevent_req_error(req
, EINVAL
);
326 fstrcpy(state
->domain
->name
, response
->data
.domain_info
.name
);
327 fstrcpy(state
->domain
->alt_name
, response
->data
.domain_info
.alt_name
);
328 state
->domain
->native_mode
= response
->data
.domain_info
.native_mode
;
329 state
->domain
->active_directory
=
330 response
->data
.domain_info
.active_directory
;
331 state
->domain
->initialized
= true;
333 TALLOC_FREE(response
);
335 subreq
= wb_child_request_send(state
, state
->ev
, &state
->domain
->child
,
337 if (tevent_req_nomem(subreq
, req
)) {
340 tevent_req_set_callback(subreq
, wb_domain_request_done
, req
);
343 static void wb_domain_request_done(struct tevent_req
*subreq
)
345 struct tevent_req
*req
= tevent_req_callback_data(
346 subreq
, struct tevent_req
);
347 struct wb_domain_request_state
*state
= tevent_req_data(
348 req
, struct wb_domain_request_state
);
351 ret
= wb_child_request_recv(subreq
, talloc_tos(), &state
->response
,
355 tevent_req_error(req
, err
);
358 tevent_req_done(req
);
361 int wb_domain_request_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
362 struct winbindd_response
**presponse
, int *err
)
364 struct wb_domain_request_state
*state
= tevent_req_data(
365 req
, struct wb_domain_request_state
);
367 if (tevent_req_is_unix_error(req
, err
)) {
370 *presponse
= talloc_move(mem_ctx
, &state
->response
);
375 * Machinery for async requests sent to children. You set up a
376 * winbindd_request, select a child to query, and issue a async_request
377 * call. When the request is completed, the callback function you specified is
378 * called back with the private pointer you gave to async_request.
381 struct winbindd_async_request
{
382 struct winbindd_async_request
*next
, *prev
;
384 struct winbindd_child
*child
;
385 struct winbindd_response
*response
;
386 void (*continuation
)(void *private_data
, bool success
);
387 struct timed_event
*reply_timeout_event
;
388 pid_t child_pid
; /* pid of the child we're waiting on. Used to detect
389 a restart of the child (child->pid != child_pid). */
393 static bool fork_domain_child(struct winbindd_child
*child
);
394 static void async_request_done(struct tevent_req
*req
);
396 void async_request(TALLOC_CTX
*mem_ctx
, struct winbindd_child
*child
,
397 struct winbindd_request
*request
,
398 struct winbindd_response
*response
,
399 void (*continuation
)(void *private_data
, bool success
),
402 struct winbindd_async_request
*state
;
403 struct tevent_req
*req
;
405 DEBUG(10, ("Sending request to child pid %d (domain=%s)\n",
407 (child
->domain
!= NULL
) ? child
->domain
->name
: "''"));
409 state
= talloc(mem_ctx
, struct winbindd_async_request
);
411 DEBUG(0, ("talloc failed\n"));
412 continuation(private_data
, False
);
416 state
->mem_ctx
= mem_ctx
;
417 state
->child
= child
;
418 state
->reply_timeout_event
= NULL
;
419 state
->response
= response
;
420 state
->continuation
= continuation
;
421 state
->private_data
= private_data
;
423 request
->pid
= child
->pid
;
425 req
= wb_child_request_send(state
, winbind_event_context(),
428 DEBUG(0, ("wb_child_request_send failed\n"));
429 continuation(private_data
, false);
432 tevent_req_set_callback(req
, async_request_done
, state
);
435 static void async_request_done(struct tevent_req
*req
)
437 struct winbindd_async_request
*state
= tevent_req_callback_data(
438 req
, struct winbindd_async_request
);
439 struct winbindd_response
*response
;
442 ret
= wb_child_request_recv(req
, state
, &response
, &err
);
445 DEBUG(2, ("wb_child_request_recv failed: %s\n",
447 state
->continuation(state
->private_data
, false);
450 *state
->response
= *response
;
451 state
->continuation(state
->private_data
, true);
454 struct domain_request_state
{
455 struct winbindd_domain
*domain
;
456 struct winbindd_request
*request
;
457 struct winbindd_response
*response
;
458 void (*continuation
)(void *private_data_data
, bool success
);
459 void *private_data_data
;
462 static void async_domain_request_done(struct tevent_req
*req
);
464 void async_domain_request(TALLOC_CTX
*mem_ctx
,
465 struct winbindd_domain
*domain
,
466 struct winbindd_request
*request
,
467 struct winbindd_response
*response
,
468 void (*continuation
)(void *private_data_data
, bool success
),
469 void *private_data_data
)
471 struct tevent_req
*subreq
;
472 struct domain_request_state
*state
;
474 state
= TALLOC_P(mem_ctx
, struct domain_request_state
);
476 DEBUG(0, ("talloc failed\n"));
477 continuation(private_data_data
, False
);
481 state
->domain
= domain
;
482 state
->request
= request
;
483 state
->response
= response
;
484 state
->continuation
= continuation
;
485 state
->private_data_data
= private_data_data
;
487 subreq
= wb_domain_request_send(state
, winbind_event_context(),
489 if (subreq
== NULL
) {
490 DEBUG(5, ("wb_domain_request_send failed\n"));
491 continuation(private_data_data
, false);
494 tevent_req_set_callback(subreq
, async_domain_request_done
, state
);
497 static void async_domain_request_done(struct tevent_req
*req
)
499 struct domain_request_state
*state
= tevent_req_callback_data(
500 req
, struct domain_request_state
);
501 struct winbindd_response
*response
;
504 ret
= wb_domain_request_recv(req
, state
, &response
, &err
);
507 DEBUG(5, ("wb_domain_request returned %s\n", strerror(err
)));
508 state
->continuation(state
->private_data_data
, false);
511 *(state
->response
) = *response
;
512 state
->continuation(state
->private_data_data
, true);
515 static void recvfrom_child(void *private_data_data
, bool success
)
517 struct winbindd_cli_state
*state
=
518 talloc_get_type_abort(private_data_data
, struct winbindd_cli_state
);
519 enum winbindd_result result
= state
->response
->result
;
521 /* This is an optimization: The child has written directly to the
522 * response buffer. The request itself is still in pending state,
523 * state that in the result code. */
525 state
->response
->result
= WINBINDD_PENDING
;
527 if ((!success
) || (result
!= WINBINDD_OK
)) {
528 request_error(state
);
535 void sendto_child(struct winbindd_cli_state
*state
,
536 struct winbindd_child
*child
)
538 async_request(state
->mem_ctx
, child
, state
->request
,
539 state
->response
, recvfrom_child
, state
);
542 void sendto_domain(struct winbindd_cli_state
*state
,
543 struct winbindd_domain
*domain
)
545 async_domain_request(state
->mem_ctx
, domain
,
546 state
->request
, state
->response
,
547 recvfrom_child
, state
);
550 static void child_process_request(struct winbindd_child
*child
,
551 struct winbindd_cli_state
*state
)
553 struct winbindd_domain
*domain
= child
->domain
;
554 const struct winbindd_child_dispatch_table
*table
= child
->table
;
556 /* Free response data - we may be interrupted and receive another
557 command before being able to send this data off. */
559 state
->response
->result
= WINBINDD_ERROR
;
560 state
->response
->length
= sizeof(struct winbindd_response
);
562 /* as all requests in the child are sync, we can use talloc_tos() */
563 state
->mem_ctx
= talloc_tos();
565 /* Process command */
567 for (; table
->name
; table
++) {
568 if (state
->request
->cmd
== table
->struct_cmd
) {
569 DEBUG(10,("child_process_request: request fn %s\n",
571 state
->response
->result
= table
->struct_fn(domain
, state
);
576 DEBUG(1 ,("child_process_request: unknown request fn number %d\n",
577 (int)state
->request
->cmd
));
578 state
->response
->result
= WINBINDD_ERROR
;
581 void setup_child(struct winbindd_child
*child
,
582 const struct winbindd_child_dispatch_table
*table
,
583 const char *logprefix
,
586 if (logprefix
&& logname
) {
587 if (asprintf(&child
->logfilename
, "%s/%s-%s",
588 get_dyn_LOGFILEBASE(), logprefix
, logname
) < 0) {
589 smb_panic("Internal error: asprintf failed");
592 smb_panic("Internal error: logprefix == NULL && "
596 child
->domain
= NULL
;
597 child
->table
= table
;
598 child
->queue
= tevent_queue_create(NULL
, "winbind_child");
599 SMB_ASSERT(child
->queue
!= NULL
);
602 struct winbindd_child
*children
= NULL
;
604 void winbind_child_died(pid_t pid
)
606 struct winbindd_child
*child
;
608 for (child
= children
; child
!= NULL
; child
= child
->next
) {
609 if (child
->pid
== pid
) {
615 DEBUG(5, ("Already reaped child %u died\n", (unsigned int)pid
));
619 /* This will be re-added in fork_domain_child() */
621 DLIST_REMOVE(children
, child
);
628 /* Ensure any negative cache entries with the netbios or realm names are removed. */
630 void winbindd_flush_negative_conn_cache(struct winbindd_domain
*domain
)
632 flush_negative_conn_cache_for_domain(domain
->name
);
633 if (*domain
->alt_name
) {
634 flush_negative_conn_cache_for_domain(domain
->alt_name
);
639 * Parent winbindd process sets its own debug level first and then
640 * sends a message to all the winbindd children to adjust their debug
641 * level to that of parents.
644 void winbind_msg_debug(struct messaging_context
*msg_ctx
,
647 struct server_id server_id
,
650 struct winbindd_child
*child
;
652 DEBUG(10,("winbind_msg_debug: got debug message.\n"));
654 debug_message(msg_ctx
, private_data
, MSG_DEBUG
, server_id
, data
);
656 for (child
= children
; child
!= NULL
; child
= child
->next
) {
658 DEBUG(10,("winbind_msg_debug: sending message to pid %u.\n",
659 (unsigned int)child
->pid
));
661 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
664 strlen((char *) data
->data
) + 1);
668 /* Set our domains as offline and forward the offline message to our children. */
670 void winbind_msg_offline(struct messaging_context
*msg_ctx
,
673 struct server_id server_id
,
676 struct winbindd_child
*child
;
677 struct winbindd_domain
*domain
;
679 DEBUG(10,("winbind_msg_offline: got offline message.\n"));
681 if (!lp_winbind_offline_logon()) {
682 DEBUG(10,("winbind_msg_offline: rejecting offline message.\n"));
686 /* Set our global state as offline. */
687 if (!set_global_winbindd_state_offline()) {
688 DEBUG(10,("winbind_msg_offline: offline request failed.\n"));
692 /* Set all our domains as offline. */
693 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
694 if (domain
->internal
) {
697 DEBUG(5,("winbind_msg_offline: marking %s offline.\n", domain
->name
));
698 set_domain_offline(domain
);
701 for (child
= children
; child
!= NULL
; child
= child
->next
) {
702 /* Don't send message to internal childs. We've already
704 if (!child
->domain
|| winbindd_internal_child(child
)) {
708 /* Or internal domains (this should not be possible....) */
709 if (child
->domain
->internal
) {
713 /* Each winbindd child should only process requests for one domain - make sure
714 we only set it online / offline for that domain. */
716 DEBUG(10,("winbind_msg_offline: sending message to pid %u for domain %s.\n",
717 (unsigned int)child
->pid
, domain
->name
));
719 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
721 (uint8
*)child
->domain
->name
,
722 strlen(child
->domain
->name
)+1);
726 /* Set our domains as online and forward the online message to our children. */
728 void winbind_msg_online(struct messaging_context
*msg_ctx
,
731 struct server_id server_id
,
734 struct winbindd_child
*child
;
735 struct winbindd_domain
*domain
;
737 DEBUG(10,("winbind_msg_online: got online message.\n"));
739 if (!lp_winbind_offline_logon()) {
740 DEBUG(10,("winbind_msg_online: rejecting online message.\n"));
744 /* Set our global state as online. */
745 set_global_winbindd_state_online();
747 smb_nscd_flush_user_cache();
748 smb_nscd_flush_group_cache();
750 /* Set all our domains as online. */
751 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
752 if (domain
->internal
) {
755 DEBUG(5,("winbind_msg_online: requesting %s to go online.\n", domain
->name
));
757 winbindd_flush_negative_conn_cache(domain
);
758 set_domain_online_request(domain
);
760 /* Send an online message to the idmap child when our
761 primary domain comes back online */
763 if ( domain
->primary
) {
764 struct winbindd_child
*idmap
= idmap_child();
766 if ( idmap
->pid
!= 0 ) {
767 messaging_send_buf(msg_ctx
,
768 pid_to_procid(idmap
->pid
),
770 (uint8
*)domain
->name
,
771 strlen(domain
->name
)+1);
776 for (child
= children
; child
!= NULL
; child
= child
->next
) {
777 /* Don't send message to internal childs. */
778 if (!child
->domain
|| winbindd_internal_child(child
)) {
782 /* Or internal domains (this should not be possible....) */
783 if (child
->domain
->internal
) {
787 /* Each winbindd child should only process requests for one domain - make sure
788 we only set it online / offline for that domain. */
790 DEBUG(10,("winbind_msg_online: sending message to pid %u for domain %s.\n",
791 (unsigned int)child
->pid
, child
->domain
->name
));
793 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
795 (uint8
*)child
->domain
->name
,
796 strlen(child
->domain
->name
)+1);
800 static const char *collect_onlinestatus(TALLOC_CTX
*mem_ctx
)
802 struct winbindd_domain
*domain
;
805 if ((buf
= talloc_asprintf(mem_ctx
, "global:%s ",
806 get_global_winbindd_state_offline() ?
807 "Offline":"Online")) == NULL
) {
811 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
812 if ((buf
= talloc_asprintf_append_buffer(buf
, "%s:%s ",
815 "Online":"Offline")) == NULL
) {
820 buf
= talloc_asprintf_append_buffer(buf
, "\n");
822 DEBUG(5,("collect_onlinestatus: %s", buf
));
827 void winbind_msg_onlinestatus(struct messaging_context
*msg_ctx
,
830 struct server_id server_id
,
835 struct server_id
*sender
;
837 DEBUG(5,("winbind_msg_onlinestatus received.\n"));
843 sender
= (struct server_id
*)data
->data
;
845 mem_ctx
= talloc_init("winbind_msg_onlinestatus");
846 if (mem_ctx
== NULL
) {
850 message
= collect_onlinestatus(mem_ctx
);
851 if (message
== NULL
) {
852 talloc_destroy(mem_ctx
);
856 messaging_send_buf(msg_ctx
, *sender
, MSG_WINBIND_ONLINESTATUS
,
857 (uint8
*)message
, strlen(message
) + 1);
859 talloc_destroy(mem_ctx
);
862 void winbind_msg_dump_event_list(struct messaging_context
*msg_ctx
,
865 struct server_id server_id
,
868 struct winbindd_child
*child
;
870 DEBUG(10,("winbind_msg_dump_event_list received\n"));
872 dump_event_list(winbind_event_context());
874 for (child
= children
; child
!= NULL
; child
= child
->next
) {
876 DEBUG(10,("winbind_msg_dump_event_list: sending message to pid %u\n",
877 (unsigned int)child
->pid
));
879 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
886 void winbind_msg_dump_domain_list(struct messaging_context
*msg_ctx
,
889 struct server_id server_id
,
893 const char *message
= NULL
;
894 struct server_id
*sender
= NULL
;
895 const char *domain
= NULL
;
898 struct winbindd_domain
*dom
= NULL
;
900 DEBUG(5,("winbind_msg_dump_domain_list received.\n"));
902 if (!data
|| !data
->data
) {
906 if (data
->length
< sizeof(struct server_id
)) {
910 mem_ctx
= talloc_init("winbind_msg_dump_domain_list");
915 sender
= (struct server_id
*)data
->data
;
916 if (data
->length
> sizeof(struct server_id
)) {
917 domain
= (const char *)data
->data
+sizeof(struct server_id
);
922 DEBUG(5,("winbind_msg_dump_domain_list for domain: %s\n",
925 message
= NDR_PRINT_STRUCT_STRING(mem_ctx
, winbindd_domain
,
926 find_domain_from_name_noinit(domain
));
928 talloc_destroy(mem_ctx
);
932 messaging_send_buf(msg_ctx
, *sender
,
933 MSG_WINBIND_DUMP_DOMAIN_LIST
,
934 (uint8_t *)message
, strlen(message
) + 1);
936 talloc_destroy(mem_ctx
);
941 DEBUG(5,("winbind_msg_dump_domain_list all domains\n"));
943 for (dom
= domain_list(); dom
; dom
=dom
->next
) {
944 message
= NDR_PRINT_STRUCT_STRING(mem_ctx
, winbindd_domain
, dom
);
946 talloc_destroy(mem_ctx
);
950 s
= talloc_asprintf_append(s
, "%s\n", message
);
952 talloc_destroy(mem_ctx
);
957 status
= messaging_send_buf(msg_ctx
, *sender
,
958 MSG_WINBIND_DUMP_DOMAIN_LIST
,
959 (uint8_t *)s
, strlen(s
) + 1);
960 if (!NT_STATUS_IS_OK(status
)) {
961 DEBUG(0,("failed to send message: %s\n",
965 talloc_destroy(mem_ctx
);
968 static void account_lockout_policy_handler(struct event_context
*ctx
,
969 struct timed_event
*te
,
973 struct winbindd_child
*child
=
974 (struct winbindd_child
*)private_data
;
975 TALLOC_CTX
*mem_ctx
= NULL
;
976 struct winbindd_methods
*methods
;
977 struct samr_DomInfo12 lockout_policy
;
980 DEBUG(10,("account_lockout_policy_handler called\n"));
982 TALLOC_FREE(child
->lockout_policy_event
);
984 if ( !winbindd_can_contact_domain( child
->domain
) ) {
985 DEBUG(10,("account_lockout_policy_handler: Removing myself since I "
986 "do not have an incoming trust to domain %s\n",
987 child
->domain
->name
));
992 methods
= child
->domain
->methods
;
994 mem_ctx
= talloc_init("account_lockout_policy_handler ctx");
996 result
= NT_STATUS_NO_MEMORY
;
998 result
= methods
->lockout_policy(child
->domain
, mem_ctx
, &lockout_policy
);
1000 TALLOC_FREE(mem_ctx
);
1002 if (!NT_STATUS_IS_OK(result
)) {
1003 DEBUG(10,("account_lockout_policy_handler: lockout_policy failed error %s\n",
1004 nt_errstr(result
)));
1007 child
->lockout_policy_event
= event_add_timed(winbind_event_context(), NULL
,
1008 timeval_current_ofs(3600, 0),
1009 account_lockout_policy_handler
,
1013 static time_t get_machine_password_timeout(void)
1015 /* until we have gpo support use lp setting */
1016 return lp_machine_password_timeout();
1019 static bool calculate_next_machine_pwd_change(const char *domain
,
1022 time_t pass_last_set_time
;
1027 pw
= secrets_fetch_machine_password(domain
,
1028 &pass_last_set_time
,
1032 DEBUG(0,("cannot fetch own machine password ????"));
1038 timeout
= get_machine_password_timeout();
1040 DEBUG(10,("machine password never expires\n"));
1044 if (time(NULL
) < (pass_last_set_time
+ timeout
)) {
1045 next_change
= pass_last_set_time
+ timeout
;
1046 DEBUG(10,("machine password still valid until: %s\n",
1047 http_timestring(talloc_tos(), next_change
)));
1048 *t
= timeval_set(next_change
, 0);
1052 DEBUG(10,("machine password expired, needs immediate change\n"));
1054 *t
= timeval_zero();
1059 static void machine_password_change_handler(struct event_context
*ctx
,
1060 struct timed_event
*te
,
1064 struct winbindd_child
*child
=
1065 (struct winbindd_child
*)private_data
;
1066 struct rpc_pipe_client
*netlogon_pipe
= NULL
;
1069 struct timeval next_change
;
1071 DEBUG(10,("machine_password_change_handler called\n"));
1073 TALLOC_FREE(child
->machine_password_change_event
);
1075 if (!calculate_next_machine_pwd_change(child
->domain
->name
,
1080 if (!winbindd_can_contact_domain(child
->domain
)) {
1081 DEBUG(10,("machine_password_change_handler: Removing myself since I "
1082 "do not have an incoming trust to domain %s\n",
1083 child
->domain
->name
));
1087 result
= cm_connect_netlogon(child
->domain
, &netlogon_pipe
);
1088 if (!NT_STATUS_IS_OK(result
)) {
1089 DEBUG(10,("machine_password_change_handler: "
1090 "failed to connect netlogon pipe: %s\n",
1091 nt_errstr(result
)));
1095 frame
= talloc_stackframe();
1097 result
= trust_pw_find_change_and_store_it(netlogon_pipe
,
1099 child
->domain
->name
);
1102 if (!NT_STATUS_IS_OK(result
)) {
1103 DEBUG(10,("machine_password_change_handler: "
1104 "failed to change machine password: %s\n",
1105 nt_errstr(result
)));
1107 DEBUG(10,("machine_password_change_handler: "
1108 "successfully changed machine password\n"));
1111 child
->machine_password_change_event
= event_add_timed(winbind_event_context(), NULL
,
1113 machine_password_change_handler
,
1117 /* Deal with a request to go offline. */
1119 static void child_msg_offline(struct messaging_context
*msg
,
1122 struct server_id server_id
,
1125 struct winbindd_domain
*domain
;
1126 struct winbindd_domain
*primary_domain
= NULL
;
1127 const char *domainname
= (const char *)data
->data
;
1129 if (data
->data
== NULL
|| data
->length
== 0) {
1133 DEBUG(5,("child_msg_offline received for domain %s.\n", domainname
));
1135 if (!lp_winbind_offline_logon()) {
1136 DEBUG(10,("child_msg_offline: rejecting offline message.\n"));
1140 primary_domain
= find_our_domain();
1142 /* Mark the requested domain offline. */
1144 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1145 if (domain
->internal
) {
1148 if (strequal(domain
->name
, domainname
)) {
1149 DEBUG(5,("child_msg_offline: marking %s offline.\n", domain
->name
));
1150 set_domain_offline(domain
);
1151 /* we are in the trusted domain, set the primary domain
1153 if (domain
!= primary_domain
) {
1154 set_domain_offline(primary_domain
);
1160 /* Deal with a request to go online. */
1162 static void child_msg_online(struct messaging_context
*msg
,
1165 struct server_id server_id
,
1168 struct winbindd_domain
*domain
;
1169 struct winbindd_domain
*primary_domain
= NULL
;
1170 const char *domainname
= (const char *)data
->data
;
1172 if (data
->data
== NULL
|| data
->length
== 0) {
1176 DEBUG(5,("child_msg_online received for domain %s.\n", domainname
));
1178 if (!lp_winbind_offline_logon()) {
1179 DEBUG(10,("child_msg_online: rejecting online message.\n"));
1183 primary_domain
= find_our_domain();
1185 /* Set our global state as online. */
1186 set_global_winbindd_state_online();
1188 /* Try and mark everything online - delete any negative cache entries
1189 to force a reconnect now. */
1191 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1192 if (domain
->internal
) {
1195 if (strequal(domain
->name
, domainname
)) {
1196 DEBUG(5,("child_msg_online: requesting %s to go online.\n", domain
->name
));
1197 winbindd_flush_negative_conn_cache(domain
);
1198 set_domain_online_request(domain
);
1200 /* we can be in trusted domain, which will contact primary domain
1201 * we have to bring primary domain online in trusted domain process
1202 * see, winbindd_dual_pam_auth() --> winbindd_dual_pam_auth_samlogon()
1203 * --> contact_domain = find_our_domain()
1205 if (domain
!= primary_domain
) {
1206 winbindd_flush_negative_conn_cache(primary_domain
);
1207 set_domain_online_request(primary_domain
);
1213 static void child_msg_dump_event_list(struct messaging_context
*msg
,
1216 struct server_id server_id
,
1219 DEBUG(5,("child_msg_dump_event_list received\n"));
1221 dump_event_list(winbind_event_context());
1224 bool winbindd_reinit_after_fork(const char *logfilename
)
1226 struct winbindd_domain
*domain
;
1227 struct winbindd_child
*cl
;
1229 if (!NT_STATUS_IS_OK(reinit_after_fork(winbind_messaging_context(),
1230 winbind_event_context(),
1232 DEBUG(0,("reinit_after_fork() failed\n"));
1236 close_conns_after_fork();
1238 if (!override_logfile
&& logfilename
) {
1239 lp_set_logfile(logfilename
);
1243 if (!winbindd_setup_sig_term_handler(false))
1245 if (!winbindd_setup_sig_hup_handler(override_logfile
? NULL
:
1249 /* Don't handle the same messages as our parent. */
1250 messaging_deregister(winbind_messaging_context(),
1251 MSG_SMB_CONF_UPDATED
, NULL
);
1252 messaging_deregister(winbind_messaging_context(),
1253 MSG_SHUTDOWN
, NULL
);
1254 messaging_deregister(winbind_messaging_context(),
1255 MSG_WINBIND_OFFLINE
, NULL
);
1256 messaging_deregister(winbind_messaging_context(),
1257 MSG_WINBIND_ONLINE
, NULL
);
1258 messaging_deregister(winbind_messaging_context(),
1259 MSG_WINBIND_ONLINESTATUS
, NULL
);
1260 messaging_deregister(winbind_messaging_context(),
1261 MSG_DUMP_EVENT_LIST
, NULL
);
1262 messaging_deregister(winbind_messaging_context(),
1263 MSG_WINBIND_DUMP_DOMAIN_LIST
, NULL
);
1264 messaging_deregister(winbind_messaging_context(),
1267 /* We have destroyed all events in the winbindd_event_context
1268 * in reinit_after_fork(), so clean out all possible pending
1269 * event pointers. */
1271 /* Deal with check_online_events. */
1273 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1274 TALLOC_FREE(domain
->check_online_event
);
1277 /* Ensure we're not handling a credential cache event inherited
1278 * from our parent. */
1280 ccache_remove_all_after_fork();
1282 /* Destroy all possible events in child list. */
1283 for (cl
= children
; cl
!= NULL
; cl
= cl
->next
) {
1284 TALLOC_FREE(cl
->lockout_policy_event
);
1285 TALLOC_FREE(cl
->machine_password_change_event
);
1287 /* Children should never be able to send
1288 * each other messages, all messages must
1289 * go through the parent.
1294 * This is a little tricky, children must not
1295 * send an MSG_WINBIND_ONLINE message to idmap_child().
1296 * If we are in a child of our primary domain or
1297 * in the process created by fork_child_dc_connect(),
1298 * and the primary domain cannot go online,
1299 * fork_child_dc_connection() sends MSG_WINBIND_ONLINE
1300 * periodically to idmap_child().
1302 * The sequence is, fork_child_dc_connect() ---> getdcs() --->
1303 * get_dc_name_via_netlogon() ---> cm_connect_netlogon()
1304 * ---> init_dc_connection() ---> cm_open_connection --->
1305 * set_domain_online(), sends MSG_WINBIND_ONLINE to
1306 * idmap_child(). Disallow children sending messages
1307 * to each other, all messages must go through the parent.
1315 static bool fork_domain_child(struct winbindd_child
*child
)
1318 struct winbindd_cli_state state
;
1319 struct winbindd_request request
;
1320 struct winbindd_response response
;
1321 struct winbindd_domain
*primary_domain
= NULL
;
1323 if (child
->domain
) {
1324 DEBUG(10, ("fork_domain_child called for domain '%s'\n",
1325 child
->domain
->name
));
1327 DEBUG(10, ("fork_domain_child called without domain.\n"));
1330 if (socketpair(AF_UNIX
, SOCK_STREAM
, 0, fdpair
) != 0) {
1331 DEBUG(0, ("Could not open child pipe: %s\n",
1337 state
.pid
= sys_getpid();
1338 state
.request
= &request
;
1339 state
.response
= &response
;
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];
1466 if (run_events(winbind_event_context(), 0, NULL
, NULL
)) {
1473 if (child
->domain
&& child
->domain
->startup
&&
1474 (now
.tv_sec
> child
->domain
->startup_time
+ 30)) {
1475 /* No longer in "startup" mode. */
1476 DEBUG(10,("fork_domain_child: domain %s no longer in 'startup' mode.\n",
1477 child
->domain
->name
));
1478 child
->domain
->startup
= False
;
1483 FD_SET(state
.sock
, &r_fds
);
1486 event_add_to_select_args(winbind_event_context(), &now
,
1487 &r_fds
, &w_fds
, &t
, &maxfd
);
1488 tp
= get_timed_events_timeout(winbind_event_context(), &t
);
1490 DEBUG(11,("select will use timeout of %u.%u seconds\n",
1491 (unsigned int)tp
->tv_sec
, (unsigned int)tp
->tv_usec
));
1494 ret
= sys_select(maxfd
+ 1, &r_fds
, &w_fds
, NULL
, tp
);
1496 if (run_events(winbind_event_context(), ret
, &r_fds
, &w_fds
)) {
1497 /* We got a signal - continue. */
1503 DEBUG(11,("nothing is ready yet, continue\n"));
1508 if (ret
== -1 && errno
== EINTR
) {
1509 /* We got a signal - continue. */
1514 if (ret
== -1 && errno
!= EINTR
) {
1515 DEBUG(0,("select error occured\n"));
1521 /* fetch a request from the main daemon */
1522 status
= child_read_request(&state
);
1524 if (!NT_STATUS_IS_OK(status
)) {
1525 /* we lost contact with our parent */
1529 DEBUG(4,("child daemon request %d\n", (int)state
.request
->cmd
));
1531 ZERO_STRUCTP(state
.response
);
1532 state
.request
->null_term
= '\0';
1533 child_process_request(child
, &state
);
1535 DEBUG(4, ("Finished processing child request %d\n",
1536 (int)state
.request
->cmd
));
1538 SAFE_FREE(state
.request
->extra_data
.data
);
1540 iov
[0].iov_base
= (void *)state
.response
;
1541 iov
[0].iov_len
= sizeof(struct winbindd_response
);
1544 if (state
.response
->length
> sizeof(struct winbindd_response
)) {
1546 (void *)state
.response
->extra_data
.data
;
1547 iov
[1].iov_len
= state
.response
->length
-iov
[0].iov_len
;
1551 DEBUG(10, ("Writing %d bytes to parent\n",
1552 (int)state
.response
->length
));
1554 if (write_data_iov(state
.sock
, iov
, iov_count
) !=
1555 state
.response
->length
) {
1556 DEBUG(0, ("Could not write result\n"));