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 "rpc_client/rpc_client.h"
33 #include "nsswitch/wb_reqtrans.h"
35 #include "../lib/util/select.h"
36 #include "../libcli/security/security.h"
37 #include "system/select.h"
39 #include "../lib/util/tevent_unix.h"
40 #include "lib/param/loadparm.h"
43 #define DBGC_CLASS DBGC_WINBIND
45 extern bool override_logfile
;
46 extern struct winbindd_methods cache_methods
;
48 static struct winbindd_child
*winbindd_children
= NULL
;
50 /* Read some data from a client connection */
52 static NTSTATUS
child_read_request(struct winbindd_cli_state
*state
)
58 status
= read_data(state
->sock
, (char *)state
->request
,
59 sizeof(*state
->request
));
61 if (!NT_STATUS_IS_OK(status
)) {
62 DEBUG(3, ("child_read_request: read_data failed: %s\n",
67 if (state
->request
->extra_len
== 0) {
68 state
->request
->extra_data
.data
= NULL
;
72 DEBUG(10, ("Need to read %d extra bytes\n", (int)state
->request
->extra_len
));
74 state
->request
->extra_data
.data
=
75 SMB_MALLOC_ARRAY(char, state
->request
->extra_len
+ 1);
77 if (state
->request
->extra_data
.data
== NULL
) {
78 DEBUG(0, ("malloc failed\n"));
79 return NT_STATUS_NO_MEMORY
;
82 /* Ensure null termination */
83 state
->request
->extra_data
.data
[state
->request
->extra_len
] = '\0';
85 status
= read_data(state
->sock
, state
->request
->extra_data
.data
,
86 state
->request
->extra_len
);
88 if (!NT_STATUS_IS_OK(status
)) {
89 DEBUG(0, ("Could not read extra data: %s\n",
96 * Do winbind child async request. This is not simply wb_simple_trans. We have
97 * to do the queueing ourselves because while a request is queued, the child
98 * might have crashed, and we have to re-fork it in the _trigger function.
101 struct wb_child_request_state
{
102 struct tevent_context
*ev
;
103 struct winbindd_child
*child
;
104 struct winbindd_request
*request
;
105 struct winbindd_response
*response
;
108 static bool fork_domain_child(struct winbindd_child
*child
);
110 static void wb_child_request_trigger(struct tevent_req
*req
,
112 static void wb_child_request_done(struct tevent_req
*subreq
);
114 struct tevent_req
*wb_child_request_send(TALLOC_CTX
*mem_ctx
,
115 struct tevent_context
*ev
,
116 struct winbindd_child
*child
,
117 struct winbindd_request
*request
)
119 struct tevent_req
*req
;
120 struct wb_child_request_state
*state
;
122 req
= tevent_req_create(mem_ctx
, &state
,
123 struct wb_child_request_state
);
129 state
->child
= child
;
130 state
->request
= request
;
132 if (!tevent_queue_add(child
->queue
, ev
, req
,
133 wb_child_request_trigger
, NULL
)) {
135 return tevent_req_post(req
, ev
);
140 static void wb_child_request_trigger(struct tevent_req
*req
,
143 struct wb_child_request_state
*state
= tevent_req_data(
144 req
, struct wb_child_request_state
);
145 struct tevent_req
*subreq
;
147 if ((state
->child
->sock
== -1) && (!fork_domain_child(state
->child
))) {
148 tevent_req_error(req
, errno
);
152 subreq
= wb_simple_trans_send(state
, winbind_event_context(), NULL
,
153 state
->child
->sock
, state
->request
);
154 if (tevent_req_nomem(subreq
, req
)) {
157 tevent_req_set_callback(subreq
, wb_child_request_done
, req
);
158 tevent_req_set_endtime(req
, state
->ev
, timeval_current_ofs(300, 0));
161 static void wb_child_request_done(struct tevent_req
*subreq
)
163 struct tevent_req
*req
= tevent_req_callback_data(
164 subreq
, struct tevent_req
);
165 struct wb_child_request_state
*state
= tevent_req_data(
166 req
, struct wb_child_request_state
);
169 ret
= wb_simple_trans_recv(subreq
, state
, &state
->response
, &err
);
173 * The basic parent/child communication broke, close
176 close(state
->child
->sock
);
177 state
->child
->sock
= -1;
178 DLIST_REMOVE(winbindd_children
, state
->child
);
179 tevent_req_error(req
, err
);
182 tevent_req_done(req
);
185 int wb_child_request_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
186 struct winbindd_response
**presponse
, int *err
)
188 struct wb_child_request_state
*state
= tevent_req_data(
189 req
, struct wb_child_request_state
);
191 if (tevent_req_is_unix_error(req
, err
)) {
194 *presponse
= talloc_move(mem_ctx
, &state
->response
);
198 static bool winbindd_child_busy(struct winbindd_child
*child
)
200 return tevent_queue_length(child
->queue
) > 0;
203 static struct winbindd_child
*find_idle_child(struct winbindd_domain
*domain
)
207 for (i
=0; i
<lp_winbind_max_domain_connections(); i
++) {
208 if (!winbindd_child_busy(&domain
->children
[i
])) {
209 return &domain
->children
[i
];
216 struct winbindd_child
*choose_domain_child(struct winbindd_domain
*domain
)
218 struct winbindd_child
*result
;
220 result
= find_idle_child(domain
);
221 if (result
!= NULL
) {
224 return &domain
->children
[rand() % lp_winbind_max_domain_connections()];
227 struct dcerpc_binding_handle
*dom_child_handle(struct winbindd_domain
*domain
)
229 struct winbindd_child
*child
;
231 child
= choose_domain_child(domain
);
232 return child
->binding_handle
;
235 struct wb_domain_request_state
{
236 struct tevent_context
*ev
;
237 struct winbindd_domain
*domain
;
238 struct winbindd_child
*child
;
239 struct winbindd_request
*request
;
240 struct winbindd_request
*init_req
;
241 struct winbindd_response
*response
;
244 static void wb_domain_request_gotdc(struct tevent_req
*subreq
);
245 static void wb_domain_request_initialized(struct tevent_req
*subreq
);
246 static void wb_domain_request_done(struct tevent_req
*subreq
);
248 struct tevent_req
*wb_domain_request_send(TALLOC_CTX
*mem_ctx
,
249 struct tevent_context
*ev
,
250 struct winbindd_domain
*domain
,
251 struct winbindd_request
*request
)
253 struct tevent_req
*req
, *subreq
;
254 struct wb_domain_request_state
*state
;
256 req
= tevent_req_create(mem_ctx
, &state
,
257 struct wb_domain_request_state
);
262 state
->child
= choose_domain_child(domain
);
264 if (domain
->initialized
) {
265 subreq
= wb_child_request_send(state
, ev
, state
->child
,
267 if (tevent_req_nomem(subreq
, req
)) {
268 return tevent_req_post(req
, ev
);
270 tevent_req_set_callback(subreq
, wb_domain_request_done
, req
);
274 state
->domain
= domain
;
276 state
->request
= request
;
278 state
->init_req
= talloc_zero(state
, struct winbindd_request
);
279 if (tevent_req_nomem(state
->init_req
, req
)) {
280 return tevent_req_post(req
, ev
);
283 if (IS_DC
|| domain
->primary
|| domain
->internal
) {
284 /* The primary domain has to find the DC name itself */
285 state
->init_req
->cmd
= WINBINDD_INIT_CONNECTION
;
286 fstrcpy(state
->init_req
->domain_name
, domain
->name
);
287 state
->init_req
->data
.init_conn
.is_primary
= domain
->primary
;
288 fstrcpy(state
->init_req
->data
.init_conn
.dcname
, "");
290 subreq
= wb_child_request_send(state
, ev
, state
->child
,
292 if (tevent_req_nomem(subreq
, req
)) {
293 return tevent_req_post(req
, ev
);
295 tevent_req_set_callback(subreq
, wb_domain_request_initialized
,
301 * Ask our DC for a DC name
303 domain
= find_our_domain();
305 /* This is *not* the primary domain, let's ask our DC about a DC
308 state
->init_req
->cmd
= WINBINDD_GETDCNAME
;
309 fstrcpy(state
->init_req
->domain_name
, domain
->name
);
311 subreq
= wb_child_request_send(state
, ev
, state
->child
, request
);
312 if (tevent_req_nomem(subreq
, req
)) {
313 return tevent_req_post(req
, ev
);
315 tevent_req_set_callback(subreq
, wb_domain_request_gotdc
, req
);
319 static void wb_domain_request_gotdc(struct tevent_req
*subreq
)
321 struct tevent_req
*req
= tevent_req_callback_data(
322 subreq
, struct tevent_req
);
323 struct wb_domain_request_state
*state
= tevent_req_data(
324 req
, struct wb_domain_request_state
);
325 struct winbindd_response
*response
;
328 ret
= wb_child_request_recv(subreq
, talloc_tos(), &response
, &err
);
331 tevent_req_error(req
, err
);
334 state
->init_req
->cmd
= WINBINDD_INIT_CONNECTION
;
335 fstrcpy(state
->init_req
->domain_name
, state
->domain
->name
);
336 state
->init_req
->data
.init_conn
.is_primary
= False
;
337 fstrcpy(state
->init_req
->data
.init_conn
.dcname
,
338 response
->data
.dc_name
);
340 TALLOC_FREE(response
);
342 subreq
= wb_child_request_send(state
, state
->ev
, state
->child
,
344 if (tevent_req_nomem(subreq
, req
)) {
347 tevent_req_set_callback(subreq
, wb_domain_request_initialized
, req
);
350 static void wb_domain_request_initialized(struct tevent_req
*subreq
)
352 struct tevent_req
*req
= tevent_req_callback_data(
353 subreq
, struct tevent_req
);
354 struct wb_domain_request_state
*state
= tevent_req_data(
355 req
, struct wb_domain_request_state
);
356 struct winbindd_response
*response
;
359 ret
= wb_child_request_recv(subreq
, talloc_tos(), &response
, &err
);
362 tevent_req_error(req
, err
);
366 if (!string_to_sid(&state
->domain
->sid
,
367 response
->data
.domain_info
.sid
)) {
368 DEBUG(1,("init_child_recv: Could not convert sid %s "
369 "from string\n", response
->data
.domain_info
.sid
));
370 tevent_req_error(req
, EINVAL
);
374 talloc_free(state
->domain
->name
);
375 state
->domain
->name
= talloc_strdup(state
->domain
,
376 response
->data
.domain_info
.name
);
377 if (state
->domain
->name
== NULL
) {
378 tevent_req_error(req
, ENOMEM
);
382 if (response
->data
.domain_info
.alt_name
[0] != '\0') {
383 talloc_free(state
->domain
->alt_name
);
385 state
->domain
->alt_name
= talloc_strdup(state
->domain
,
386 response
->data
.domain_info
.alt_name
);
387 if (state
->domain
->alt_name
== NULL
) {
388 tevent_req_error(req
, ENOMEM
);
393 state
->domain
->native_mode
= response
->data
.domain_info
.native_mode
;
394 state
->domain
->active_directory
=
395 response
->data
.domain_info
.active_directory
;
396 state
->domain
->initialized
= true;
398 TALLOC_FREE(response
);
400 subreq
= wb_child_request_send(state
, state
->ev
, state
->child
,
402 if (tevent_req_nomem(subreq
, req
)) {
405 tevent_req_set_callback(subreq
, wb_domain_request_done
, req
);
408 static void wb_domain_request_done(struct tevent_req
*subreq
)
410 struct tevent_req
*req
= tevent_req_callback_data(
411 subreq
, struct tevent_req
);
412 struct wb_domain_request_state
*state
= tevent_req_data(
413 req
, struct wb_domain_request_state
);
416 ret
= wb_child_request_recv(subreq
, talloc_tos(), &state
->response
,
420 tevent_req_error(req
, err
);
423 tevent_req_done(req
);
426 int wb_domain_request_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
427 struct winbindd_response
**presponse
, int *err
)
429 struct wb_domain_request_state
*state
= tevent_req_data(
430 req
, struct wb_domain_request_state
);
432 if (tevent_req_is_unix_error(req
, err
)) {
435 *presponse
= talloc_move(mem_ctx
, &state
->response
);
439 static void child_process_request(struct winbindd_child
*child
,
440 struct winbindd_cli_state
*state
)
442 struct winbindd_domain
*domain
= child
->domain
;
443 const struct winbindd_child_dispatch_table
*table
= child
->table
;
445 /* Free response data - we may be interrupted and receive another
446 command before being able to send this data off. */
448 state
->response
->result
= WINBINDD_ERROR
;
449 state
->response
->length
= sizeof(struct winbindd_response
);
451 /* as all requests in the child are sync, we can use talloc_tos() */
452 state
->mem_ctx
= talloc_tos();
454 /* Process command */
456 for (; table
->name
; table
++) {
457 if (state
->request
->cmd
== table
->struct_cmd
) {
458 DEBUG(10,("child_process_request: request fn %s\n",
460 state
->response
->result
= table
->struct_fn(domain
, state
);
465 DEBUG(1, ("child_process_request: unknown request fn number %d\n",
466 (int)state
->request
->cmd
));
467 state
->response
->result
= WINBINDD_ERROR
;
470 void setup_child(struct winbindd_domain
*domain
, struct winbindd_child
*child
,
471 const struct winbindd_child_dispatch_table
*table
,
472 const char *logprefix
,
475 if (logprefix
&& logname
) {
476 char *logbase
= NULL
;
478 if (*lp_logfile(talloc_tos())) {
481 if (asprintf(&logbase
, "%s", lp_logfile(talloc_tos())) < 0) {
482 smb_panic("Internal error: asprintf failed");
485 if ((end
= strrchr_m(logbase
, '/'))) {
489 if (asprintf(&logbase
, "%s", get_dyn_LOGFILEBASE()) < 0) {
490 smb_panic("Internal error: asprintf failed");
494 if (asprintf(&child
->logfilename
, "%s/%s-%s",
495 logbase
, logprefix
, logname
) < 0) {
497 smb_panic("Internal error: asprintf failed");
502 smb_panic("Internal error: logprefix == NULL && "
507 child
->domain
= domain
;
508 child
->table
= table
;
509 child
->queue
= tevent_queue_create(NULL
, "winbind_child");
510 SMB_ASSERT(child
->queue
!= NULL
);
511 child
->binding_handle
= wbint_binding_handle(NULL
, domain
, child
);
512 SMB_ASSERT(child
->binding_handle
!= NULL
);
515 void winbind_child_died(pid_t pid
)
517 struct winbindd_child
*child
;
519 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
520 if (child
->pid
== pid
) {
526 DEBUG(5, ("Already reaped child %u died\n", (unsigned int)pid
));
530 /* This will be re-added in fork_domain_child() */
532 DLIST_REMOVE(winbindd_children
, child
);
535 if (child
->sock
!= -1) {
541 /* Ensure any negative cache entries with the netbios or realm names are removed. */
543 void winbindd_flush_negative_conn_cache(struct winbindd_domain
*domain
)
545 flush_negative_conn_cache_for_domain(domain
->name
);
546 if (domain
->alt_name
!= NULL
) {
547 flush_negative_conn_cache_for_domain(domain
->alt_name
);
552 * Parent winbindd process sets its own debug level first and then
553 * sends a message to all the winbindd children to adjust their debug
554 * level to that of parents.
557 void winbind_msg_debug(struct messaging_context
*msg_ctx
,
560 struct server_id server_id
,
563 struct winbindd_child
*child
;
565 DEBUG(10,("winbind_msg_debug: got debug message.\n"));
567 debug_message(msg_ctx
, private_data
, MSG_DEBUG
, server_id
, data
);
569 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
571 DEBUG(10,("winbind_msg_debug: sending message to pid %u.\n",
572 (unsigned int)child
->pid
));
574 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
577 strlen((char *) data
->data
) + 1);
581 /* Set our domains as offline and forward the offline message to our children. */
583 void winbind_msg_offline(struct messaging_context
*msg_ctx
,
586 struct server_id server_id
,
589 struct winbindd_child
*child
;
590 struct winbindd_domain
*domain
;
592 DEBUG(10,("winbind_msg_offline: got offline message.\n"));
594 if (!lp_winbind_offline_logon()) {
595 DEBUG(10,("winbind_msg_offline: rejecting offline message.\n"));
599 /* Set our global state as offline. */
600 if (!set_global_winbindd_state_offline()) {
601 DEBUG(10,("winbind_msg_offline: offline request failed.\n"));
605 /* Set all our domains as offline. */
606 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
607 if (domain
->internal
) {
610 DEBUG(5,("winbind_msg_offline: marking %s offline.\n", domain
->name
));
611 set_domain_offline(domain
);
614 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
615 /* Don't send message to internal children. We've already
617 if (!child
->domain
|| winbindd_internal_child(child
)) {
621 /* Or internal domains (this should not be possible....) */
622 if (child
->domain
->internal
) {
626 /* Each winbindd child should only process requests for one domain - make sure
627 we only set it online / offline for that domain. */
629 DEBUG(10,("winbind_msg_offline: sending message to pid %u for domain %s.\n",
630 (unsigned int)child
->pid
, child
->domain
->name
));
632 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
634 (const uint8_t *)child
->domain
->name
,
635 strlen(child
->domain
->name
)+1);
639 /* Set our domains as online and forward the online message to our children. */
641 void winbind_msg_online(struct messaging_context
*msg_ctx
,
644 struct server_id server_id
,
647 struct winbindd_child
*child
;
648 struct winbindd_domain
*domain
;
650 DEBUG(10,("winbind_msg_online: got online message.\n"));
652 if (!lp_winbind_offline_logon()) {
653 DEBUG(10,("winbind_msg_online: rejecting online message.\n"));
657 /* Set our global state as online. */
658 set_global_winbindd_state_online();
660 smb_nscd_flush_user_cache();
661 smb_nscd_flush_group_cache();
663 /* Set all our domains as online. */
664 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
665 if (domain
->internal
) {
668 DEBUG(5,("winbind_msg_online: requesting %s to go online.\n", domain
->name
));
670 winbindd_flush_negative_conn_cache(domain
);
671 set_domain_online_request(domain
);
673 /* Send an online message to the idmap child when our
674 primary domain comes back online */
676 if ( domain
->primary
) {
677 struct winbindd_child
*idmap
= idmap_child();
679 if ( idmap
->pid
!= 0 ) {
680 messaging_send_buf(msg_ctx
,
681 pid_to_procid(idmap
->pid
),
683 (const uint8_t *)domain
->name
,
684 strlen(domain
->name
)+1);
689 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
690 /* Don't send message to internal childs. */
691 if (!child
->domain
|| winbindd_internal_child(child
)) {
695 /* Or internal domains (this should not be possible....) */
696 if (child
->domain
->internal
) {
700 /* Each winbindd child should only process requests for one domain - make sure
701 we only set it online / offline for that domain. */
703 DEBUG(10,("winbind_msg_online: sending message to pid %u for domain %s.\n",
704 (unsigned int)child
->pid
, child
->domain
->name
));
706 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
708 (const uint8_t *)child
->domain
->name
,
709 strlen(child
->domain
->name
)+1);
713 static const char *collect_onlinestatus(TALLOC_CTX
*mem_ctx
)
715 struct winbindd_domain
*domain
;
718 if ((buf
= talloc_asprintf(mem_ctx
, "global:%s ",
719 get_global_winbindd_state_offline() ?
720 "Offline":"Online")) == NULL
) {
724 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
725 if ((buf
= talloc_asprintf_append_buffer(buf
, "%s:%s ",
728 "Online":"Offline")) == NULL
) {
733 buf
= talloc_asprintf_append_buffer(buf
, "\n");
735 DEBUG(5,("collect_onlinestatus: %s", buf
));
740 void winbind_msg_onlinestatus(struct messaging_context
*msg_ctx
,
743 struct server_id server_id
,
748 struct server_id
*sender
;
750 DEBUG(5,("winbind_msg_onlinestatus received.\n"));
756 sender
= (struct server_id
*)data
->data
;
758 mem_ctx
= talloc_init("winbind_msg_onlinestatus");
759 if (mem_ctx
== NULL
) {
763 message
= collect_onlinestatus(mem_ctx
);
764 if (message
== NULL
) {
765 talloc_destroy(mem_ctx
);
769 messaging_send_buf(msg_ctx
, *sender
, MSG_WINBIND_ONLINESTATUS
,
770 (const uint8
*)message
, strlen(message
) + 1);
772 talloc_destroy(mem_ctx
);
775 void winbind_msg_dump_event_list(struct messaging_context
*msg_ctx
,
778 struct server_id server_id
,
781 struct winbindd_child
*child
;
783 DEBUG(10,("winbind_msg_dump_event_list received\n"));
785 dump_event_list(winbind_event_context());
787 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
789 DEBUG(10,("winbind_msg_dump_event_list: sending message to pid %u\n",
790 (unsigned int)child
->pid
));
792 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
799 void winbind_msg_dump_domain_list(struct messaging_context
*msg_ctx
,
802 struct server_id server_id
,
806 const char *message
= NULL
;
807 struct server_id
*sender
= NULL
;
808 const char *domain
= NULL
;
811 struct winbindd_domain
*dom
= NULL
;
813 DEBUG(5,("winbind_msg_dump_domain_list received.\n"));
815 if (!data
|| !data
->data
) {
819 if (data
->length
< sizeof(struct server_id
)) {
823 mem_ctx
= talloc_init("winbind_msg_dump_domain_list");
828 sender
= (struct server_id
*)data
->data
;
829 if (data
->length
> sizeof(struct server_id
)) {
830 domain
= (const char *)data
->data
+sizeof(struct server_id
);
835 DEBUG(5,("winbind_msg_dump_domain_list for domain: %s\n",
838 message
= NDR_PRINT_STRUCT_STRING(mem_ctx
, winbindd_domain
,
839 find_domain_from_name_noinit(domain
));
841 talloc_destroy(mem_ctx
);
845 messaging_send_buf(msg_ctx
, *sender
,
846 MSG_WINBIND_DUMP_DOMAIN_LIST
,
847 (const uint8_t *)message
, strlen(message
) + 1);
849 talloc_destroy(mem_ctx
);
854 DEBUG(5,("winbind_msg_dump_domain_list all domains\n"));
856 for (dom
= domain_list(); dom
; dom
=dom
->next
) {
857 message
= NDR_PRINT_STRUCT_STRING(mem_ctx
, winbindd_domain
, dom
);
859 talloc_destroy(mem_ctx
);
863 s
= talloc_asprintf_append(s
, "%s\n", message
);
865 talloc_destroy(mem_ctx
);
870 status
= messaging_send_buf(msg_ctx
, *sender
,
871 MSG_WINBIND_DUMP_DOMAIN_LIST
,
872 (uint8_t *)s
, strlen(s
) + 1);
873 if (!NT_STATUS_IS_OK(status
)) {
874 DEBUG(0,("failed to send message: %s\n",
878 talloc_destroy(mem_ctx
);
881 static void account_lockout_policy_handler(struct tevent_context
*ctx
,
882 struct tevent_timer
*te
,
886 struct winbindd_child
*child
=
887 (struct winbindd_child
*)private_data
;
888 TALLOC_CTX
*mem_ctx
= NULL
;
889 struct winbindd_methods
*methods
;
890 struct samr_DomInfo12 lockout_policy
;
893 DEBUG(10,("account_lockout_policy_handler called\n"));
895 TALLOC_FREE(child
->lockout_policy_event
);
897 if ( !winbindd_can_contact_domain( child
->domain
) ) {
898 DEBUG(10,("account_lockout_policy_handler: Removing myself since I "
899 "do not have an incoming trust to domain %s\n",
900 child
->domain
->name
));
905 methods
= child
->domain
->methods
;
907 mem_ctx
= talloc_init("account_lockout_policy_handler ctx");
909 result
= NT_STATUS_NO_MEMORY
;
911 result
= methods
->lockout_policy(child
->domain
, mem_ctx
, &lockout_policy
);
913 TALLOC_FREE(mem_ctx
);
915 if (!NT_STATUS_IS_OK(result
)) {
916 DEBUG(10,("account_lockout_policy_handler: lockout_policy failed error %s\n",
920 child
->lockout_policy_event
= tevent_add_timer(winbind_event_context(), NULL
,
921 timeval_current_ofs(3600, 0),
922 account_lockout_policy_handler
,
926 static time_t get_machine_password_timeout(void)
928 /* until we have gpo support use lp setting */
929 return lp_machine_password_timeout();
932 static bool calculate_next_machine_pwd_change(const char *domain
,
935 time_t pass_last_set_time
;
941 pw
= secrets_fetch_machine_password(domain
,
946 DEBUG(0,("cannot fetch own machine password ????"));
952 timeout
= get_machine_password_timeout();
954 DEBUG(10,("machine password never expires\n"));
958 tv
.tv_sec
= pass_last_set_time
;
959 DEBUG(10, ("password last changed %s\n",
960 timeval_string(talloc_tos(), &tv
, false)));
961 tv
.tv_sec
+= timeout
;
962 DEBUGADD(10, ("password valid until %s\n",
963 timeval_string(talloc_tos(), &tv
, false)));
965 if (time(NULL
) < (pass_last_set_time
+ timeout
)) {
966 next_change
= pass_last_set_time
+ timeout
;
967 DEBUG(10,("machine password still valid until: %s\n",
968 http_timestring(talloc_tos(), next_change
)));
969 *t
= timeval_set(next_change
, 0);
971 if (lp_clustering()) {
974 * When having a cluster, we have several
975 * winbinds racing for the password change. In
976 * the machine_password_change_handler()
977 * function we check if someone else was
978 * faster when the event triggers. We add a
979 * 255-second random delay here, so that we
980 * don't run to change the password at the
983 generate_random_buffer(&randbuf
, sizeof(randbuf
));
984 DEBUG(10, ("adding %d seconds randomness\n",
986 t
->tv_sec
+= randbuf
;
991 DEBUG(10,("machine password expired, needs immediate change\n"));
998 static void machine_password_change_handler(struct tevent_context
*ctx
,
999 struct tevent_timer
*te
,
1003 struct messaging_context
*msg_ctx
= winbind_messaging_context();
1004 struct winbindd_child
*child
=
1005 (struct winbindd_child
*)private_data
;
1006 struct rpc_pipe_client
*netlogon_pipe
= NULL
;
1008 struct timeval next_change
;
1010 DEBUG(10,("machine_password_change_handler called\n"));
1012 TALLOC_FREE(child
->machine_password_change_event
);
1014 if (!calculate_next_machine_pwd_change(child
->domain
->name
,
1016 DEBUG(10, ("calculate_next_machine_pwd_change failed\n"));
1020 DEBUG(10, ("calculate_next_machine_pwd_change returned %s\n",
1021 timeval_string(talloc_tos(), &next_change
, false)));
1023 if (!timeval_expired(&next_change
)) {
1024 DEBUG(10, ("Someone else has already changed the pw\n"));
1028 if (!winbindd_can_contact_domain(child
->domain
)) {
1029 DEBUG(10,("machine_password_change_handler: Removing myself since I "
1030 "do not have an incoming trust to domain %s\n",
1031 child
->domain
->name
));
1035 result
= cm_connect_netlogon(child
->domain
, &netlogon_pipe
);
1036 if (!NT_STATUS_IS_OK(result
)) {
1037 DEBUG(10,("machine_password_change_handler: "
1038 "failed to connect netlogon pipe: %s\n",
1039 nt_errstr(result
)));
1043 result
= trust_pw_change(child
->domain
->conn
.netlogon_creds
,
1045 netlogon_pipe
->binding_handle
,
1046 child
->domain
->name
,
1049 DEBUG(10, ("machine_password_change_handler: "
1050 "trust_pw_change returned %s\n",
1051 nt_errstr(result
)));
1053 if (NT_STATUS_EQUAL(result
, NT_STATUS_ACCESS_DENIED
) ) {
1054 DEBUG(3,("machine_password_change_handler: password set returned "
1055 "ACCESS_DENIED. Maybe the trust account "
1056 "password was changed and we didn't know it. "
1057 "Killing connections to domain %s\n",
1058 child
->domain
->name
));
1059 invalidate_cm_connection(&child
->domain
->conn
);
1062 if (!calculate_next_machine_pwd_change(child
->domain
->name
,
1064 DEBUG(10, ("calculate_next_machine_pwd_change failed\n"));
1068 DEBUG(10, ("calculate_next_machine_pwd_change returned %s\n",
1069 timeval_string(talloc_tos(), &next_change
, false)));
1071 if (!NT_STATUS_IS_OK(result
)) {
1074 * In case of failure, give the DC a minute to recover
1076 tmp
= timeval_current_ofs(60, 0);
1077 next_change
= timeval_max(&next_change
, &tmp
);
1081 child
->machine_password_change_event
= tevent_add_timer(winbind_event_context(), NULL
,
1083 machine_password_change_handler
,
1087 /* Deal with a request to go offline. */
1089 static void child_msg_offline(struct messaging_context
*msg
,
1092 struct server_id server_id
,
1095 struct winbindd_domain
*domain
;
1096 struct winbindd_domain
*primary_domain
= NULL
;
1097 const char *domainname
= (const char *)data
->data
;
1099 if (data
->data
== NULL
|| data
->length
== 0) {
1103 DEBUG(5,("child_msg_offline received for domain %s.\n", domainname
));
1105 if (!lp_winbind_offline_logon()) {
1106 DEBUG(10,("child_msg_offline: rejecting offline message.\n"));
1110 primary_domain
= find_our_domain();
1112 /* Mark the requested domain offline. */
1114 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1115 if (domain
->internal
) {
1118 if (strequal(domain
->name
, domainname
)) {
1119 DEBUG(5,("child_msg_offline: marking %s offline.\n", domain
->name
));
1120 set_domain_offline(domain
);
1121 /* we are in the trusted domain, set the primary domain
1123 if (domain
!= primary_domain
) {
1124 set_domain_offline(primary_domain
);
1130 /* Deal with a request to go online. */
1132 static void child_msg_online(struct messaging_context
*msg
,
1135 struct server_id server_id
,
1138 struct winbindd_domain
*domain
;
1139 struct winbindd_domain
*primary_domain
= NULL
;
1140 const char *domainname
= (const char *)data
->data
;
1142 if (data
->data
== NULL
|| data
->length
== 0) {
1146 DEBUG(5,("child_msg_online received for domain %s.\n", domainname
));
1148 if (!lp_winbind_offline_logon()) {
1149 DEBUG(10,("child_msg_online: rejecting online message.\n"));
1153 primary_domain
= find_our_domain();
1155 /* Set our global state as online. */
1156 set_global_winbindd_state_online();
1158 /* Try and mark everything online - delete any negative cache entries
1159 to force a reconnect now. */
1161 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1162 if (domain
->internal
) {
1165 if (strequal(domain
->name
, domainname
)) {
1166 DEBUG(5,("child_msg_online: requesting %s to go online.\n", domain
->name
));
1167 winbindd_flush_negative_conn_cache(domain
);
1168 set_domain_online_request(domain
);
1170 /* we can be in trusted domain, which will contact primary domain
1171 * we have to bring primary domain online in trusted domain process
1172 * see, winbindd_dual_pam_auth() --> winbindd_dual_pam_auth_samlogon()
1173 * --> contact_domain = find_our_domain()
1175 if (domain
!= primary_domain
) {
1176 winbindd_flush_negative_conn_cache(primary_domain
);
1177 set_domain_online_request(primary_domain
);
1183 static void child_msg_dump_event_list(struct messaging_context
*msg
,
1186 struct server_id server_id
,
1189 DEBUG(5,("child_msg_dump_event_list received\n"));
1191 dump_event_list(winbind_event_context());
1194 NTSTATUS
winbindd_reinit_after_fork(const struct winbindd_child
*myself
,
1195 const char *logfilename
)
1197 struct winbindd_domain
*domain
;
1198 struct winbindd_child
*cl
;
1201 status
= reinit_after_fork(
1202 winbind_messaging_context(),
1203 winbind_event_context(),
1205 if (!NT_STATUS_IS_OK(status
)) {
1206 DEBUG(0,("reinit_after_fork() failed\n"));
1210 close_conns_after_fork();
1212 if (!override_logfile
&& logfilename
) {
1213 lp_set_logfile(logfilename
);
1217 if (!winbindd_setup_sig_term_handler(false))
1218 return NT_STATUS_NO_MEMORY
;
1219 if (!winbindd_setup_sig_hup_handler(override_logfile
? NULL
:
1221 return NT_STATUS_NO_MEMORY
;
1223 /* Stop zombies in children */
1226 /* Don't handle the same messages as our parent. */
1227 messaging_deregister(winbind_messaging_context(),
1228 MSG_SMB_CONF_UPDATED
, NULL
);
1229 messaging_deregister(winbind_messaging_context(),
1230 MSG_SHUTDOWN
, NULL
);
1231 messaging_deregister(winbind_messaging_context(),
1232 MSG_WINBIND_OFFLINE
, NULL
);
1233 messaging_deregister(winbind_messaging_context(),
1234 MSG_WINBIND_ONLINE
, NULL
);
1235 messaging_deregister(winbind_messaging_context(),
1236 MSG_WINBIND_ONLINESTATUS
, NULL
);
1237 messaging_deregister(winbind_messaging_context(),
1238 MSG_DUMP_EVENT_LIST
, NULL
);
1239 messaging_deregister(winbind_messaging_context(),
1240 MSG_WINBIND_DUMP_DOMAIN_LIST
, NULL
);
1241 messaging_deregister(winbind_messaging_context(),
1244 messaging_deregister(winbind_messaging_context(),
1245 MSG_WINBIND_DOMAIN_OFFLINE
, NULL
);
1246 messaging_deregister(winbind_messaging_context(),
1247 MSG_WINBIND_DOMAIN_ONLINE
, NULL
);
1249 /* We have destroyed all events in the winbindd_event_context
1250 * in reinit_after_fork(), so clean out all possible pending
1251 * event pointers. */
1253 /* Deal with check_online_events. */
1255 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1256 TALLOC_FREE(domain
->check_online_event
);
1259 /* Ensure we're not handling a credential cache event inherited
1260 * from our parent. */
1262 ccache_remove_all_after_fork();
1264 /* Destroy all possible events in child list. */
1265 for (cl
= winbindd_children
; cl
!= NULL
; cl
= cl
->next
) {
1266 TALLOC_FREE(cl
->lockout_policy_event
);
1267 TALLOC_FREE(cl
->machine_password_change_event
);
1269 /* Children should never be able to send
1270 * each other messages, all messages must
1271 * go through the parent.
1276 * Close service sockets to all other children
1278 if ((cl
!= myself
) && (cl
->sock
!= -1)) {
1284 * This is a little tricky, children must not
1285 * send an MSG_WINBIND_ONLINE message to idmap_child().
1286 * If we are in a child of our primary domain or
1287 * in the process created by fork_child_dc_connect(),
1288 * and the primary domain cannot go online,
1289 * fork_child_dc_connection() sends MSG_WINBIND_ONLINE
1290 * periodically to idmap_child().
1292 * The sequence is, fork_child_dc_connect() ---> getdcs() --->
1293 * get_dc_name_via_netlogon() ---> cm_connect_netlogon()
1294 * ---> init_dc_connection() ---> cm_open_connection --->
1295 * set_domain_online(), sends MSG_WINBIND_ONLINE to
1296 * idmap_child(). Disallow children sending messages
1297 * to each other, all messages must go through the parent.
1302 return NT_STATUS_OK
;
1306 * In a child there will be only one domain, reference that here.
1308 static struct winbindd_domain
*child_domain
;
1310 struct winbindd_domain
*wb_child_domain(void)
1312 return child_domain
;
1315 struct child_handler_state
{
1316 struct winbindd_child
*child
;
1317 struct winbindd_cli_state cli
;
1320 static void child_handler(struct tevent_context
*ev
, struct tevent_fd
*fde
,
1321 uint16_t flags
, void *private_data
)
1323 struct child_handler_state
*state
=
1324 (struct child_handler_state
*)private_data
;
1326 struct iovec iov
[2];
1329 /* fetch a request from the main daemon */
1330 status
= child_read_request(&state
->cli
);
1332 if (!NT_STATUS_IS_OK(status
)) {
1333 /* we lost contact with our parent */
1337 DEBUG(4,("child daemon request %d\n",
1338 (int)state
->cli
.request
->cmd
));
1340 ZERO_STRUCTP(state
->cli
.response
);
1341 state
->cli
.request
->null_term
= '\0';
1342 state
->cli
.mem_ctx
= talloc_tos();
1343 child_process_request(state
->child
, &state
->cli
);
1345 DEBUG(4, ("Finished processing child request %d\n",
1346 (int)state
->cli
.request
->cmd
));
1348 SAFE_FREE(state
->cli
.request
->extra_data
.data
);
1350 iov
[0].iov_base
= (void *)state
->cli
.response
;
1351 iov
[0].iov_len
= sizeof(struct winbindd_response
);
1354 if (state
->cli
.response
->length
>
1355 sizeof(struct winbindd_response
)) {
1357 (void *)state
->cli
.response
->extra_data
.data
;
1358 iov
[1].iov_len
= state
->cli
.response
->length
-iov
[0].iov_len
;
1362 DEBUG(10, ("Writing %d bytes to parent\n",
1363 (int)state
->cli
.response
->length
));
1365 if (write_data_iov(state
->cli
.sock
, iov
, iov_count
) !=
1366 state
->cli
.response
->length
) {
1367 DEBUG(0, ("Could not write result\n"));
1372 static bool fork_domain_child(struct winbindd_child
*child
)
1375 struct child_handler_state state
;
1376 struct winbindd_request request
;
1377 struct winbindd_response response
;
1378 struct winbindd_domain
*primary_domain
= NULL
;
1381 struct tevent_fd
*fde
;
1383 if (child
->domain
) {
1384 DEBUG(10, ("fork_domain_child called for domain '%s'\n",
1385 child
->domain
->name
));
1387 DEBUG(10, ("fork_domain_child called without domain.\n"));
1390 if (socketpair(AF_UNIX
, SOCK_STREAM
, 0, fdpair
) != 0) {
1391 DEBUG(0, ("Could not open child pipe: %s\n",
1397 state
.child
= child
;
1398 state
.cli
.pid
= getpid();
1399 state
.cli
.request
= &request
;
1400 state
.cli
.response
= &response
;
1402 child
->pid
= fork();
1404 if (child
->pid
== -1) {
1405 DEBUG(0, ("Could not fork: %s\n", strerror(errno
)));
1411 if (child
->pid
!= 0) {
1417 nread
= sys_read(fdpair
[1], &status
, sizeof(status
));
1418 if (nread
!= sizeof(status
)) {
1419 DEBUG(1, ("fork_domain_child: Could not read child status: "
1420 "nread=%d, error=%s\n", (int)nread
,
1425 if (!NT_STATUS_IS_OK(status
)) {
1426 DEBUG(1, ("fork_domain_child: Child status is %s\n",
1427 nt_errstr(status
)));
1432 child
->next
= child
->prev
= NULL
;
1433 DLIST_ADD(winbindd_children
, child
);
1434 child
->sock
= fdpair
[1];
1439 child_domain
= child
->domain
;
1441 DEBUG(10, ("Child process %d\n", (int)getpid()));
1443 state
.cli
.sock
= fdpair
[0];
1446 status
= winbindd_reinit_after_fork(child
, child
->logfilename
);
1448 nwritten
= sys_write(state
.cli
.sock
, &status
, sizeof(status
));
1449 if (nwritten
!= sizeof(status
)) {
1450 DEBUG(1, ("fork_domain_child: Could not write status: "
1451 "nwritten=%d, error=%s\n", (int)nwritten
,
1455 if (!NT_STATUS_IS_OK(status
)) {
1456 DEBUG(1, ("winbindd_reinit_after_fork failed: %s\n",
1457 nt_errstr(status
)));
1461 /* Handle online/offline messages. */
1462 messaging_register(winbind_messaging_context(), NULL
,
1463 MSG_WINBIND_OFFLINE
, child_msg_offline
);
1464 messaging_register(winbind_messaging_context(), NULL
,
1465 MSG_WINBIND_ONLINE
, child_msg_online
);
1466 messaging_register(winbind_messaging_context(), NULL
,
1467 MSG_DUMP_EVENT_LIST
, child_msg_dump_event_list
);
1468 messaging_register(winbind_messaging_context(), NULL
,
1469 MSG_DEBUG
, debug_message
);
1470 messaging_register(winbind_messaging_context(), NULL
,
1471 MSG_WINBIND_IP_DROPPED
,
1472 winbind_msg_ip_dropped
);
1475 primary_domain
= find_our_domain();
1477 if (primary_domain
== NULL
) {
1478 smb_panic("no primary domain found");
1481 /* It doesn't matter if we allow cache login,
1482 * try to bring domain online after fork. */
1483 if ( child
->domain
) {
1484 child
->domain
->startup
= True
;
1485 child
->domain
->startup_time
= time_mono(NULL
);
1486 /* we can be in primary domain or in trusted domain
1487 * If we are in trusted domain, set the primary domain
1488 * in start-up mode */
1489 if (!(child
->domain
->internal
)) {
1490 set_domain_online_request(child
->domain
);
1491 if (!(child
->domain
->primary
)) {
1492 primary_domain
->startup
= True
;
1493 primary_domain
->startup_time
= time_mono(NULL
);
1494 set_domain_online_request(primary_domain
);
1500 * We are in idmap child, make sure that we set the
1501 * check_online_event to bring primary domain online.
1503 if (child
== idmap_child()) {
1504 set_domain_online_request(primary_domain
);
1507 /* We might be in the idmap child...*/
1508 if (child
->domain
&& !(child
->domain
->internal
) &&
1509 lp_winbind_offline_logon()) {
1511 set_domain_online_request(child
->domain
);
1513 if (primary_domain
&& (primary_domain
!= child
->domain
)) {
1514 /* We need to talk to the primary
1515 * domain as well as the trusted
1516 * domain inside a trusted domain
1519 * set_dc_type_and_flags_trustinfo()
1522 set_domain_online_request(primary_domain
);
1525 child
->lockout_policy_event
= tevent_add_timer(
1526 winbind_event_context(), NULL
, timeval_zero(),
1527 account_lockout_policy_handler
,
1531 if (child
->domain
&& child
->domain
->primary
&&
1532 !USE_KERBEROS_KEYTAB
&&
1533 lp_server_role() == ROLE_DOMAIN_MEMBER
) {
1535 struct timeval next_change
;
1537 if (calculate_next_machine_pwd_change(child
->domain
->name
,
1539 child
->machine_password_change_event
= tevent_add_timer(
1540 winbind_event_context(), NULL
, next_change
,
1541 machine_password_change_handler
,
1546 fde
= tevent_add_fd(winbind_event_context(), NULL
, state
.cli
.sock
,
1547 TEVENT_FD_READ
, child_handler
, &state
);
1549 DEBUG(1, ("tevent_add_fd failed\n"));
1556 TALLOC_CTX
*frame
= talloc_stackframe();
1558 ret
= tevent_loop_once(winbind_event_context());
1560 DEBUG(1, ("tevent_loop_once failed: %s\n",
1565 if (child
->domain
&& child
->domain
->startup
&&
1566 (time_mono(NULL
) > child
->domain
->startup_time
+ 30)) {
1567 /* No longer in "startup" mode. */
1568 DEBUG(10,("fork_domain_child: domain %s no longer in 'startup' mode.\n",
1569 child
->domain
->name
));
1570 child
->domain
->startup
= False
;
1577 void winbind_msg_ip_dropped_parent(struct messaging_context
*msg_ctx
,
1580 struct server_id server_id
,
1583 struct winbindd_child
*child
;
1585 winbind_msg_ip_dropped(msg_ctx
, private_data
, msg_type
,
1589 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
1590 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
1591 msg_type
, data
->data
, data
->length
);