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"
41 #include "lib/sys_rw.h"
42 #include "lib/sys_rw_data.h"
45 #define DBGC_CLASS DBGC_WINBIND
47 extern bool override_logfile
;
49 static struct winbindd_child
*winbindd_children
= NULL
;
51 /* Read some data from a client connection */
53 static NTSTATUS
child_read_request(int sock
, struct winbindd_request
*wreq
)
57 status
= read_data_ntstatus(sock
, (char *)wreq
, sizeof(*wreq
));
58 if (!NT_STATUS_IS_OK(status
)) {
59 DEBUG(3, ("child_read_request: read_data failed: %s\n",
64 if (wreq
->extra_len
== 0) {
65 wreq
->extra_data
.data
= NULL
;
69 DEBUG(10, ("Need to read %d extra bytes\n", (int)wreq
->extra_len
));
71 wreq
->extra_data
.data
= SMB_MALLOC_ARRAY(char, wreq
->extra_len
+ 1);
72 if (wreq
->extra_data
.data
== NULL
) {
73 DEBUG(0, ("malloc failed\n"));
74 return NT_STATUS_NO_MEMORY
;
77 /* Ensure null termination */
78 wreq
->extra_data
.data
[wreq
->extra_len
] = '\0';
80 status
= read_data_ntstatus(sock
, wreq
->extra_data
.data
,
82 if (!NT_STATUS_IS_OK(status
)) {
83 DEBUG(0, ("Could not read extra data: %s\n",
89 static NTSTATUS
child_write_response(int sock
, struct winbindd_response
*wrsp
)
94 iov
[0].iov_base
= (void *)wrsp
;
95 iov
[0].iov_len
= sizeof(struct winbindd_response
);
98 if (wrsp
->length
> sizeof(struct winbindd_response
)) {
99 iov
[1].iov_base
= (void *)wrsp
->extra_data
.data
;
100 iov
[1].iov_len
= wrsp
->length
-iov
[0].iov_len
;
104 DEBUG(10, ("Writing %d bytes to parent\n", (int)wrsp
->length
));
106 if (write_data_iov(sock
, iov
, iov_count
) != wrsp
->length
) {
107 DEBUG(0, ("Could not write result\n"));
108 return NT_STATUS_INVALID_HANDLE
;
115 * Do winbind child async request. This is not simply wb_simple_trans. We have
116 * to do the queueing ourselves because while a request is queued, the child
117 * might have crashed, and we have to re-fork it in the _trigger function.
120 struct wb_child_request_state
{
121 struct tevent_context
*ev
;
122 struct winbindd_child
*child
;
123 struct winbindd_request
*request
;
124 struct winbindd_response
*response
;
127 static bool fork_domain_child(struct winbindd_child
*child
);
129 static void wb_child_request_trigger(struct tevent_req
*req
,
131 static void wb_child_request_done(struct tevent_req
*subreq
);
133 struct tevent_req
*wb_child_request_send(TALLOC_CTX
*mem_ctx
,
134 struct tevent_context
*ev
,
135 struct winbindd_child
*child
,
136 struct winbindd_request
*request
)
138 struct tevent_req
*req
;
139 struct wb_child_request_state
*state
;
141 req
= tevent_req_create(mem_ctx
, &state
,
142 struct wb_child_request_state
);
148 state
->child
= child
;
149 state
->request
= request
;
151 if (!tevent_queue_add(child
->queue
, ev
, req
,
152 wb_child_request_trigger
, NULL
)) {
154 return tevent_req_post(req
, ev
);
159 static void wb_child_request_trigger(struct tevent_req
*req
,
162 struct wb_child_request_state
*state
= tevent_req_data(
163 req
, struct wb_child_request_state
);
164 struct tevent_req
*subreq
;
166 if ((state
->child
->sock
== -1) && (!fork_domain_child(state
->child
))) {
167 tevent_req_error(req
, errno
);
171 subreq
= wb_simple_trans_send(state
, winbind_event_context(), NULL
,
172 state
->child
->sock
, state
->request
);
173 if (tevent_req_nomem(subreq
, req
)) {
176 tevent_req_set_callback(subreq
, wb_child_request_done
, req
);
177 tevent_req_set_endtime(req
, state
->ev
, timeval_current_ofs(300, 0));
180 static void wb_child_request_done(struct tevent_req
*subreq
)
182 struct tevent_req
*req
= tevent_req_callback_data(
183 subreq
, struct tevent_req
);
184 struct wb_child_request_state
*state
= tevent_req_data(
185 req
, struct wb_child_request_state
);
188 ret
= wb_simple_trans_recv(subreq
, state
, &state
->response
, &err
);
192 * The basic parent/child communication broke, close
195 close(state
->child
->sock
);
196 state
->child
->sock
= -1;
197 DLIST_REMOVE(winbindd_children
, state
->child
);
198 tevent_req_error(req
, err
);
201 tevent_req_done(req
);
204 int wb_child_request_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
205 struct winbindd_response
**presponse
, int *err
)
207 struct wb_child_request_state
*state
= tevent_req_data(
208 req
, struct wb_child_request_state
);
210 if (tevent_req_is_unix_error(req
, err
)) {
213 *presponse
= talloc_move(mem_ctx
, &state
->response
);
217 static bool winbindd_child_busy(struct winbindd_child
*child
)
219 return tevent_queue_length(child
->queue
) > 0;
222 static struct winbindd_child
*find_idle_child(struct winbindd_domain
*domain
)
226 for (i
=0; i
<lp_winbind_max_domain_connections(); i
++) {
227 if (!winbindd_child_busy(&domain
->children
[i
])) {
228 return &domain
->children
[i
];
235 struct winbindd_child
*choose_domain_child(struct winbindd_domain
*domain
)
237 struct winbindd_child
*result
;
239 result
= find_idle_child(domain
);
240 if (result
!= NULL
) {
243 return &domain
->children
[rand() % lp_winbind_max_domain_connections()];
246 struct dcerpc_binding_handle
*dom_child_handle(struct winbindd_domain
*domain
)
248 struct winbindd_child
*child
;
250 child
= choose_domain_child(domain
);
251 return child
->binding_handle
;
254 struct wb_domain_request_state
{
255 struct tevent_context
*ev
;
256 struct winbindd_domain
*domain
;
257 struct winbindd_child
*child
;
258 struct winbindd_request
*request
;
259 struct winbindd_request
*init_req
;
260 struct winbindd_response
*response
;
263 static void wb_domain_request_gotdc(struct tevent_req
*subreq
);
264 static void wb_domain_request_initialized(struct tevent_req
*subreq
);
265 static void wb_domain_request_done(struct tevent_req
*subreq
);
267 struct tevent_req
*wb_domain_request_send(TALLOC_CTX
*mem_ctx
,
268 struct tevent_context
*ev
,
269 struct winbindd_domain
*domain
,
270 struct winbindd_request
*request
)
272 struct tevent_req
*req
, *subreq
;
273 struct wb_domain_request_state
*state
;
275 req
= tevent_req_create(mem_ctx
, &state
,
276 struct wb_domain_request_state
);
281 state
->child
= choose_domain_child(domain
);
283 if (domain
->initialized
) {
284 subreq
= wb_child_request_send(state
, ev
, state
->child
,
286 if (tevent_req_nomem(subreq
, req
)) {
287 return tevent_req_post(req
, ev
);
289 tevent_req_set_callback(subreq
, wb_domain_request_done
, req
);
293 state
->domain
= domain
;
295 state
->request
= request
;
297 state
->init_req
= talloc_zero(state
, struct winbindd_request
);
298 if (tevent_req_nomem(state
->init_req
, req
)) {
299 return tevent_req_post(req
, ev
);
302 if (IS_DC
|| domain
->primary
|| domain
->internal
) {
303 /* The primary domain has to find the DC name itself */
304 state
->init_req
->cmd
= WINBINDD_INIT_CONNECTION
;
305 fstrcpy(state
->init_req
->domain_name
, domain
->name
);
306 state
->init_req
->data
.init_conn
.is_primary
= domain
->primary
;
307 fstrcpy(state
->init_req
->data
.init_conn
.dcname
, "");
309 subreq
= wb_child_request_send(state
, ev
, state
->child
,
311 if (tevent_req_nomem(subreq
, req
)) {
312 return tevent_req_post(req
, ev
);
314 tevent_req_set_callback(subreq
, wb_domain_request_initialized
,
320 * Ask our DC for a DC name
322 domain
= find_our_domain();
324 /* This is *not* the primary domain, let's ask our DC about a DC
327 state
->init_req
->cmd
= WINBINDD_GETDCNAME
;
328 fstrcpy(state
->init_req
->domain_name
, domain
->name
);
330 subreq
= wb_child_request_send(state
, ev
, state
->child
, request
);
331 if (tevent_req_nomem(subreq
, req
)) {
332 return tevent_req_post(req
, ev
);
334 tevent_req_set_callback(subreq
, wb_domain_request_gotdc
, req
);
338 static void wb_domain_request_gotdc(struct tevent_req
*subreq
)
340 struct tevent_req
*req
= tevent_req_callback_data(
341 subreq
, struct tevent_req
);
342 struct wb_domain_request_state
*state
= tevent_req_data(
343 req
, struct wb_domain_request_state
);
344 struct winbindd_response
*response
;
347 ret
= wb_child_request_recv(subreq
, talloc_tos(), &response
, &err
);
350 tevent_req_error(req
, err
);
353 state
->init_req
->cmd
= WINBINDD_INIT_CONNECTION
;
354 fstrcpy(state
->init_req
->domain_name
, state
->domain
->name
);
355 state
->init_req
->data
.init_conn
.is_primary
= False
;
356 fstrcpy(state
->init_req
->data
.init_conn
.dcname
,
357 response
->data
.dc_name
);
359 TALLOC_FREE(response
);
361 subreq
= wb_child_request_send(state
, state
->ev
, state
->child
,
363 if (tevent_req_nomem(subreq
, req
)) {
366 tevent_req_set_callback(subreq
, wb_domain_request_initialized
, req
);
369 static void wb_domain_request_initialized(struct tevent_req
*subreq
)
371 struct tevent_req
*req
= tevent_req_callback_data(
372 subreq
, struct tevent_req
);
373 struct wb_domain_request_state
*state
= tevent_req_data(
374 req
, struct wb_domain_request_state
);
375 struct winbindd_response
*response
;
378 ret
= wb_child_request_recv(subreq
, talloc_tos(), &response
, &err
);
381 tevent_req_error(req
, err
);
385 if (!string_to_sid(&state
->domain
->sid
,
386 response
->data
.domain_info
.sid
)) {
387 DEBUG(1,("init_child_recv: Could not convert sid %s "
388 "from string\n", response
->data
.domain_info
.sid
));
389 tevent_req_error(req
, EINVAL
);
393 talloc_free(state
->domain
->name
);
394 state
->domain
->name
= talloc_strdup(state
->domain
,
395 response
->data
.domain_info
.name
);
396 if (state
->domain
->name
== NULL
) {
397 tevent_req_error(req
, ENOMEM
);
401 if (response
->data
.domain_info
.alt_name
[0] != '\0') {
402 talloc_free(state
->domain
->alt_name
);
404 state
->domain
->alt_name
= talloc_strdup(state
->domain
,
405 response
->data
.domain_info
.alt_name
);
406 if (state
->domain
->alt_name
== NULL
) {
407 tevent_req_error(req
, ENOMEM
);
412 state
->domain
->native_mode
= response
->data
.domain_info
.native_mode
;
413 state
->domain
->active_directory
=
414 response
->data
.domain_info
.active_directory
;
415 state
->domain
->initialized
= true;
417 TALLOC_FREE(response
);
419 subreq
= wb_child_request_send(state
, state
->ev
, state
->child
,
421 if (tevent_req_nomem(subreq
, req
)) {
424 tevent_req_set_callback(subreq
, wb_domain_request_done
, req
);
427 static void wb_domain_request_done(struct tevent_req
*subreq
)
429 struct tevent_req
*req
= tevent_req_callback_data(
430 subreq
, struct tevent_req
);
431 struct wb_domain_request_state
*state
= tevent_req_data(
432 req
, struct wb_domain_request_state
);
435 ret
= wb_child_request_recv(subreq
, talloc_tos(), &state
->response
,
439 tevent_req_error(req
, err
);
442 tevent_req_done(req
);
445 int wb_domain_request_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
446 struct winbindd_response
**presponse
, int *err
)
448 struct wb_domain_request_state
*state
= tevent_req_data(
449 req
, struct wb_domain_request_state
);
451 if (tevent_req_is_unix_error(req
, err
)) {
454 *presponse
= talloc_move(mem_ctx
, &state
->response
);
458 static void child_process_request(struct winbindd_child
*child
,
459 struct winbindd_cli_state
*state
)
461 struct winbindd_domain
*domain
= child
->domain
;
462 const struct winbindd_child_dispatch_table
*table
= child
->table
;
464 /* Free response data - we may be interrupted and receive another
465 command before being able to send this data off. */
467 state
->response
->result
= WINBINDD_ERROR
;
468 state
->response
->length
= sizeof(struct winbindd_response
);
470 /* as all requests in the child are sync, we can use talloc_tos() */
471 state
->mem_ctx
= talloc_tos();
473 /* Process command */
475 for (; table
->name
; table
++) {
476 if (state
->request
->cmd
== table
->struct_cmd
) {
477 DEBUG(10,("child_process_request: request fn %s\n",
479 state
->response
->result
= table
->struct_fn(domain
, state
);
484 DEBUG(1, ("child_process_request: unknown request fn number %d\n",
485 (int)state
->request
->cmd
));
486 state
->response
->result
= WINBINDD_ERROR
;
489 void setup_child(struct winbindd_domain
*domain
, struct winbindd_child
*child
,
490 const struct winbindd_child_dispatch_table
*table
,
491 const char *logprefix
,
494 if (logprefix
&& logname
) {
495 char *logbase
= NULL
;
497 if (*lp_logfile(talloc_tos())) {
500 if (asprintf(&logbase
, "%s", lp_logfile(talloc_tos())) < 0) {
501 smb_panic("Internal error: asprintf failed");
504 if ((end
= strrchr_m(logbase
, '/'))) {
508 if (asprintf(&logbase
, "%s", get_dyn_LOGFILEBASE()) < 0) {
509 smb_panic("Internal error: asprintf failed");
513 if (asprintf(&child
->logfilename
, "%s/%s-%s",
514 logbase
, logprefix
, logname
) < 0) {
516 smb_panic("Internal error: asprintf failed");
521 smb_panic("Internal error: logprefix == NULL && "
526 child
->domain
= domain
;
527 child
->table
= table
;
528 child
->queue
= tevent_queue_create(NULL
, "winbind_child");
529 SMB_ASSERT(child
->queue
!= NULL
);
530 child
->binding_handle
= wbint_binding_handle(NULL
, domain
, child
);
531 SMB_ASSERT(child
->binding_handle
!= NULL
);
534 void winbind_child_died(pid_t pid
)
536 struct winbindd_child
*child
;
538 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
539 if (child
->pid
== pid
) {
545 DEBUG(5, ("Already reaped child %u died\n", (unsigned int)pid
));
549 /* This will be re-added in fork_domain_child() */
551 DLIST_REMOVE(winbindd_children
, child
);
554 if (child
->sock
!= -1) {
560 /* Ensure any negative cache entries with the netbios or realm names are removed. */
562 void winbindd_flush_negative_conn_cache(struct winbindd_domain
*domain
)
564 flush_negative_conn_cache_for_domain(domain
->name
);
565 if (domain
->alt_name
!= NULL
) {
566 flush_negative_conn_cache_for_domain(domain
->alt_name
);
571 * Parent winbindd process sets its own debug level first and then
572 * sends a message to all the winbindd children to adjust their debug
573 * level to that of parents.
576 void winbind_msg_debug(struct messaging_context
*msg_ctx
,
579 struct server_id server_id
,
582 struct winbindd_child
*child
;
584 DEBUG(10,("winbind_msg_debug: got debug message.\n"));
586 debug_message(msg_ctx
, private_data
, MSG_DEBUG
, server_id
, data
);
588 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
590 DEBUG(10,("winbind_msg_debug: sending message to pid %u.\n",
591 (unsigned int)child
->pid
));
593 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
596 strlen((char *) data
->data
) + 1);
600 /* Set our domains as offline and forward the offline message to our children. */
602 void winbind_msg_offline(struct messaging_context
*msg_ctx
,
605 struct server_id server_id
,
608 struct winbindd_child
*child
;
609 struct winbindd_domain
*domain
;
611 DEBUG(10,("winbind_msg_offline: got offline message.\n"));
613 if (!lp_winbind_offline_logon()) {
614 DEBUG(10,("winbind_msg_offline: rejecting offline message.\n"));
618 /* Set our global state as offline. */
619 if (!set_global_winbindd_state_offline()) {
620 DEBUG(10,("winbind_msg_offline: offline request failed.\n"));
624 /* Set all our domains as offline. */
625 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
626 if (domain
->internal
) {
629 DEBUG(5,("winbind_msg_offline: marking %s offline.\n", domain
->name
));
630 set_domain_offline(domain
);
633 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
634 /* Don't send message to internal children. We've already
636 if (!child
->domain
|| winbindd_internal_child(child
)) {
640 /* Or internal domains (this should not be possible....) */
641 if (child
->domain
->internal
) {
645 /* Each winbindd child should only process requests for one domain - make sure
646 we only set it online / offline for that domain. */
648 DEBUG(10,("winbind_msg_offline: sending message to pid %u for domain %s.\n",
649 (unsigned int)child
->pid
, child
->domain
->name
));
651 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
653 (const uint8_t *)child
->domain
->name
,
654 strlen(child
->domain
->name
)+1);
658 /* Set our domains as online and forward the online message to our children. */
660 void winbind_msg_online(struct messaging_context
*msg_ctx
,
663 struct server_id server_id
,
666 struct winbindd_child
*child
;
667 struct winbindd_domain
*domain
;
669 DEBUG(10,("winbind_msg_online: got online message.\n"));
671 if (!lp_winbind_offline_logon()) {
672 DEBUG(10,("winbind_msg_online: rejecting online message.\n"));
676 /* Set our global state as online. */
677 set_global_winbindd_state_online();
679 smb_nscd_flush_user_cache();
680 smb_nscd_flush_group_cache();
682 /* Set all our domains as online. */
683 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
684 if (domain
->internal
) {
687 DEBUG(5,("winbind_msg_online: requesting %s to go online.\n", domain
->name
));
689 winbindd_flush_negative_conn_cache(domain
);
690 set_domain_online_request(domain
);
692 /* Send an online message to the idmap child when our
693 primary domain comes back online */
695 if ( domain
->primary
) {
696 struct winbindd_child
*idmap
= idmap_child();
698 if ( idmap
->pid
!= 0 ) {
699 messaging_send_buf(msg_ctx
,
700 pid_to_procid(idmap
->pid
),
702 (const uint8_t *)domain
->name
,
703 strlen(domain
->name
)+1);
708 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
709 /* Don't send message to internal childs. */
710 if (!child
->domain
|| winbindd_internal_child(child
)) {
714 /* Or internal domains (this should not be possible....) */
715 if (child
->domain
->internal
) {
719 /* Each winbindd child should only process requests for one domain - make sure
720 we only set it online / offline for that domain. */
722 DEBUG(10,("winbind_msg_online: sending message to pid %u for domain %s.\n",
723 (unsigned int)child
->pid
, child
->domain
->name
));
725 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
727 (const uint8_t *)child
->domain
->name
,
728 strlen(child
->domain
->name
)+1);
732 static const char *collect_onlinestatus(TALLOC_CTX
*mem_ctx
)
734 struct winbindd_domain
*domain
;
737 if ((buf
= talloc_asprintf(mem_ctx
, "global:%s ",
738 get_global_winbindd_state_offline() ?
739 "Offline":"Online")) == NULL
) {
743 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
744 if ((buf
= talloc_asprintf_append_buffer(buf
, "%s:%s ",
747 "Online":"Offline")) == NULL
) {
752 buf
= talloc_asprintf_append_buffer(buf
, "\n");
754 DEBUG(5,("collect_onlinestatus: %s", buf
));
759 void winbind_msg_onlinestatus(struct messaging_context
*msg_ctx
,
762 struct server_id server_id
,
767 struct server_id
*sender
;
769 DEBUG(5,("winbind_msg_onlinestatus received.\n"));
775 sender
= (struct server_id
*)data
->data
;
777 mem_ctx
= talloc_init("winbind_msg_onlinestatus");
778 if (mem_ctx
== NULL
) {
782 message
= collect_onlinestatus(mem_ctx
);
783 if (message
== NULL
) {
784 talloc_destroy(mem_ctx
);
788 messaging_send_buf(msg_ctx
, *sender
, MSG_WINBIND_ONLINESTATUS
,
789 (const uint8
*)message
, strlen(message
) + 1);
791 talloc_destroy(mem_ctx
);
794 void winbind_msg_dump_event_list(struct messaging_context
*msg_ctx
,
797 struct server_id server_id
,
800 struct winbindd_child
*child
;
802 DEBUG(10,("winbind_msg_dump_event_list received\n"));
804 dump_event_list(winbind_event_context());
806 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
808 DEBUG(10,("winbind_msg_dump_event_list: sending message to pid %u\n",
809 (unsigned int)child
->pid
));
811 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
818 void winbind_msg_dump_domain_list(struct messaging_context
*msg_ctx
,
821 struct server_id server_id
,
825 const char *message
= NULL
;
826 struct server_id
*sender
= NULL
;
827 const char *domain
= NULL
;
830 struct winbindd_domain
*dom
= NULL
;
832 DEBUG(5,("winbind_msg_dump_domain_list received.\n"));
834 if (!data
|| !data
->data
) {
838 if (data
->length
< sizeof(struct server_id
)) {
842 mem_ctx
= talloc_init("winbind_msg_dump_domain_list");
847 sender
= (struct server_id
*)data
->data
;
848 if (data
->length
> sizeof(struct server_id
)) {
849 domain
= (const char *)data
->data
+sizeof(struct server_id
);
854 DEBUG(5,("winbind_msg_dump_domain_list for domain: %s\n",
857 message
= NDR_PRINT_STRUCT_STRING(mem_ctx
, winbindd_domain
,
858 find_domain_from_name_noinit(domain
));
860 talloc_destroy(mem_ctx
);
864 messaging_send_buf(msg_ctx
, *sender
,
865 MSG_WINBIND_DUMP_DOMAIN_LIST
,
866 (const uint8_t *)message
, strlen(message
) + 1);
868 talloc_destroy(mem_ctx
);
873 DEBUG(5,("winbind_msg_dump_domain_list all domains\n"));
875 for (dom
= domain_list(); dom
; dom
=dom
->next
) {
876 message
= NDR_PRINT_STRUCT_STRING(mem_ctx
, winbindd_domain
, dom
);
878 talloc_destroy(mem_ctx
);
882 s
= talloc_asprintf_append(s
, "%s\n", message
);
884 talloc_destroy(mem_ctx
);
889 status
= messaging_send_buf(msg_ctx
, *sender
,
890 MSG_WINBIND_DUMP_DOMAIN_LIST
,
891 (uint8_t *)s
, strlen(s
) + 1);
892 if (!NT_STATUS_IS_OK(status
)) {
893 DEBUG(0,("failed to send message: %s\n",
897 talloc_destroy(mem_ctx
);
900 static void account_lockout_policy_handler(struct tevent_context
*ctx
,
901 struct tevent_timer
*te
,
905 struct winbindd_child
*child
=
906 (struct winbindd_child
*)private_data
;
907 TALLOC_CTX
*mem_ctx
= NULL
;
908 struct winbindd_methods
*methods
;
909 struct samr_DomInfo12 lockout_policy
;
912 DEBUG(10,("account_lockout_policy_handler called\n"));
914 TALLOC_FREE(child
->lockout_policy_event
);
916 if ( !winbindd_can_contact_domain( child
->domain
) ) {
917 DEBUG(10,("account_lockout_policy_handler: Removing myself since I "
918 "do not have an incoming trust to domain %s\n",
919 child
->domain
->name
));
924 methods
= child
->domain
->methods
;
926 mem_ctx
= talloc_init("account_lockout_policy_handler ctx");
928 result
= NT_STATUS_NO_MEMORY
;
930 result
= methods
->lockout_policy(child
->domain
, mem_ctx
, &lockout_policy
);
932 TALLOC_FREE(mem_ctx
);
934 if (!NT_STATUS_IS_OK(result
)) {
935 DEBUG(10,("account_lockout_policy_handler: lockout_policy failed error %s\n",
939 child
->lockout_policy_event
= tevent_add_timer(winbind_event_context(), NULL
,
940 timeval_current_ofs(3600, 0),
941 account_lockout_policy_handler
,
945 static time_t get_machine_password_timeout(void)
947 /* until we have gpo support use lp setting */
948 return lp_machine_password_timeout();
951 static bool calculate_next_machine_pwd_change(const char *domain
,
954 time_t pass_last_set_time
;
960 pw
= secrets_fetch_machine_password(domain
,
965 DEBUG(0,("cannot fetch own machine password ????"));
971 timeout
= get_machine_password_timeout();
973 DEBUG(10,("machine password never expires\n"));
977 tv
.tv_sec
= pass_last_set_time
;
978 DEBUG(10, ("password last changed %s\n",
979 timeval_string(talloc_tos(), &tv
, false)));
980 tv
.tv_sec
+= timeout
;
981 DEBUGADD(10, ("password valid until %s\n",
982 timeval_string(talloc_tos(), &tv
, false)));
984 if (time(NULL
) < (pass_last_set_time
+ timeout
)) {
985 next_change
= pass_last_set_time
+ timeout
;
986 DEBUG(10,("machine password still valid until: %s\n",
987 http_timestring(talloc_tos(), next_change
)));
988 *t
= timeval_set(next_change
, 0);
990 if (lp_clustering()) {
993 * When having a cluster, we have several
994 * winbinds racing for the password change. In
995 * the machine_password_change_handler()
996 * function we check if someone else was
997 * faster when the event triggers. We add a
998 * 255-second random delay here, so that we
999 * don't run to change the password at the
1000 * exact same moment.
1002 generate_random_buffer(&randbuf
, sizeof(randbuf
));
1003 DEBUG(10, ("adding %d seconds randomness\n",
1005 t
->tv_sec
+= randbuf
;
1010 DEBUG(10,("machine password expired, needs immediate change\n"));
1012 *t
= timeval_zero();
1017 static void machine_password_change_handler(struct tevent_context
*ctx
,
1018 struct tevent_timer
*te
,
1022 struct messaging_context
*msg_ctx
= winbind_messaging_context();
1023 struct winbindd_child
*child
=
1024 (struct winbindd_child
*)private_data
;
1025 struct rpc_pipe_client
*netlogon_pipe
= NULL
;
1027 struct timeval next_change
;
1029 DEBUG(10,("machine_password_change_handler called\n"));
1031 TALLOC_FREE(child
->machine_password_change_event
);
1033 if (!calculate_next_machine_pwd_change(child
->domain
->name
,
1035 DEBUG(10, ("calculate_next_machine_pwd_change failed\n"));
1039 DEBUG(10, ("calculate_next_machine_pwd_change returned %s\n",
1040 timeval_string(talloc_tos(), &next_change
, false)));
1042 if (!timeval_expired(&next_change
)) {
1043 DEBUG(10, ("Someone else has already changed the pw\n"));
1047 if (!winbindd_can_contact_domain(child
->domain
)) {
1048 DEBUG(10,("machine_password_change_handler: Removing myself since I "
1049 "do not have an incoming trust to domain %s\n",
1050 child
->domain
->name
));
1054 result
= cm_connect_netlogon(child
->domain
, &netlogon_pipe
);
1055 if (!NT_STATUS_IS_OK(result
)) {
1056 DEBUG(10,("machine_password_change_handler: "
1057 "failed to connect netlogon pipe: %s\n",
1058 nt_errstr(result
)));
1062 result
= trust_pw_change(child
->domain
->conn
.netlogon_creds
,
1064 netlogon_pipe
->binding_handle
,
1065 child
->domain
->name
,
1068 DEBUG(10, ("machine_password_change_handler: "
1069 "trust_pw_change returned %s\n",
1070 nt_errstr(result
)));
1072 if (NT_STATUS_EQUAL(result
, NT_STATUS_ACCESS_DENIED
) ) {
1073 DEBUG(3,("machine_password_change_handler: password set returned "
1074 "ACCESS_DENIED. Maybe the trust account "
1075 "password was changed and we didn't know it. "
1076 "Killing connections to domain %s\n",
1077 child
->domain
->name
));
1078 invalidate_cm_connection(child
->domain
);
1081 if (!calculate_next_machine_pwd_change(child
->domain
->name
,
1083 DEBUG(10, ("calculate_next_machine_pwd_change failed\n"));
1087 DEBUG(10, ("calculate_next_machine_pwd_change returned %s\n",
1088 timeval_string(talloc_tos(), &next_change
, false)));
1090 if (!NT_STATUS_IS_OK(result
)) {
1093 * In case of failure, give the DC a minute to recover
1095 tmp
= timeval_current_ofs(60, 0);
1096 next_change
= timeval_max(&next_change
, &tmp
);
1100 child
->machine_password_change_event
= tevent_add_timer(winbind_event_context(), NULL
,
1102 machine_password_change_handler
,
1106 /* Deal with a request to go offline. */
1108 static void child_msg_offline(struct messaging_context
*msg
,
1111 struct server_id server_id
,
1114 struct winbindd_domain
*domain
;
1115 struct winbindd_domain
*primary_domain
= NULL
;
1116 const char *domainname
= (const char *)data
->data
;
1118 if (data
->data
== NULL
|| data
->length
== 0) {
1122 DEBUG(5,("child_msg_offline received for domain %s.\n", domainname
));
1124 if (!lp_winbind_offline_logon()) {
1125 DEBUG(10,("child_msg_offline: rejecting offline message.\n"));
1129 primary_domain
= find_our_domain();
1131 /* Mark the requested domain offline. */
1133 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1134 if (domain
->internal
) {
1137 if (strequal(domain
->name
, domainname
)) {
1138 DEBUG(5,("child_msg_offline: marking %s offline.\n", domain
->name
));
1139 set_domain_offline(domain
);
1140 /* we are in the trusted domain, set the primary domain
1142 if (domain
!= primary_domain
) {
1143 set_domain_offline(primary_domain
);
1149 /* Deal with a request to go online. */
1151 static void child_msg_online(struct messaging_context
*msg
,
1154 struct server_id server_id
,
1157 struct winbindd_domain
*domain
;
1158 struct winbindd_domain
*primary_domain
= NULL
;
1159 const char *domainname
= (const char *)data
->data
;
1161 if (data
->data
== NULL
|| data
->length
== 0) {
1165 DEBUG(5,("child_msg_online received for domain %s.\n", domainname
));
1167 if (!lp_winbind_offline_logon()) {
1168 DEBUG(10,("child_msg_online: rejecting online message.\n"));
1172 primary_domain
= find_our_domain();
1174 /* Set our global state as online. */
1175 set_global_winbindd_state_online();
1177 /* Try and mark everything online - delete any negative cache entries
1178 to force a reconnect now. */
1180 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1181 if (domain
->internal
) {
1184 if (strequal(domain
->name
, domainname
)) {
1185 DEBUG(5,("child_msg_online: requesting %s to go online.\n", domain
->name
));
1186 winbindd_flush_negative_conn_cache(domain
);
1187 set_domain_online_request(domain
);
1189 /* we can be in trusted domain, which will contact primary domain
1190 * we have to bring primary domain online in trusted domain process
1191 * see, winbindd_dual_pam_auth() --> winbindd_dual_pam_auth_samlogon()
1192 * --> contact_domain = find_our_domain()
1194 if (domain
!= primary_domain
) {
1195 winbindd_flush_negative_conn_cache(primary_domain
);
1196 set_domain_online_request(primary_domain
);
1202 static void child_msg_dump_event_list(struct messaging_context
*msg
,
1205 struct server_id server_id
,
1208 DEBUG(5,("child_msg_dump_event_list received\n"));
1210 dump_event_list(winbind_event_context());
1213 NTSTATUS
winbindd_reinit_after_fork(const struct winbindd_child
*myself
,
1214 const char *logfilename
)
1216 struct winbindd_domain
*domain
;
1217 struct winbindd_child
*cl
;
1220 status
= reinit_after_fork(
1221 winbind_messaging_context(),
1222 winbind_event_context(),
1224 if (!NT_STATUS_IS_OK(status
)) {
1225 DEBUG(0,("reinit_after_fork() failed\n"));
1229 close_conns_after_fork();
1231 if (!override_logfile
&& logfilename
) {
1232 lp_set_logfile(logfilename
);
1236 if (!winbindd_setup_sig_term_handler(false))
1237 return NT_STATUS_NO_MEMORY
;
1238 if (!winbindd_setup_sig_hup_handler(override_logfile
? NULL
:
1240 return NT_STATUS_NO_MEMORY
;
1242 /* Stop zombies in children */
1245 /* Don't handle the same messages as our parent. */
1246 messaging_deregister(winbind_messaging_context(),
1247 MSG_SMB_CONF_UPDATED
, NULL
);
1248 messaging_deregister(winbind_messaging_context(),
1249 MSG_SHUTDOWN
, NULL
);
1250 messaging_deregister(winbind_messaging_context(),
1251 MSG_WINBIND_OFFLINE
, NULL
);
1252 messaging_deregister(winbind_messaging_context(),
1253 MSG_WINBIND_ONLINE
, NULL
);
1254 messaging_deregister(winbind_messaging_context(),
1255 MSG_WINBIND_ONLINESTATUS
, NULL
);
1256 messaging_deregister(winbind_messaging_context(),
1257 MSG_DUMP_EVENT_LIST
, NULL
);
1258 messaging_deregister(winbind_messaging_context(),
1259 MSG_WINBIND_DUMP_DOMAIN_LIST
, NULL
);
1260 messaging_deregister(winbind_messaging_context(),
1263 messaging_deregister(winbind_messaging_context(),
1264 MSG_WINBIND_DOMAIN_OFFLINE
, NULL
);
1265 messaging_deregister(winbind_messaging_context(),
1266 MSG_WINBIND_DOMAIN_ONLINE
, NULL
);
1268 /* We have destroyed all events in the winbindd_event_context
1269 * in reinit_after_fork(), so clean out all possible pending
1270 * event pointers. */
1272 /* Deal with check_online_events. */
1274 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1275 TALLOC_FREE(domain
->check_online_event
);
1278 /* Ensure we're not handling a credential cache event inherited
1279 * from our parent. */
1281 ccache_remove_all_after_fork();
1283 /* Destroy all possible events in child list. */
1284 for (cl
= winbindd_children
; cl
!= NULL
; cl
= cl
->next
) {
1285 TALLOC_FREE(cl
->lockout_policy_event
);
1286 TALLOC_FREE(cl
->machine_password_change_event
);
1288 /* Children should never be able to send
1289 * each other messages, all messages must
1290 * go through the parent.
1295 * Close service sockets to all other children
1297 if ((cl
!= myself
) && (cl
->sock
!= -1)) {
1303 * This is a little tricky, children must not
1304 * send an MSG_WINBIND_ONLINE message to idmap_child().
1305 * If we are in a child of our primary domain or
1306 * in the process created by fork_child_dc_connect(),
1307 * and the primary domain cannot go online,
1308 * fork_child_dc_connection() sends MSG_WINBIND_ONLINE
1309 * periodically to idmap_child().
1311 * The sequence is, fork_child_dc_connect() ---> getdcs() --->
1312 * get_dc_name_via_netlogon() ---> cm_connect_netlogon()
1313 * ---> init_dc_connection() ---> cm_open_connection --->
1314 * set_domain_online(), sends MSG_WINBIND_ONLINE to
1315 * idmap_child(). Disallow children sending messages
1316 * to each other, all messages must go through the parent.
1321 return NT_STATUS_OK
;
1325 * In a child there will be only one domain, reference that here.
1327 static struct winbindd_domain
*child_domain
;
1329 struct winbindd_domain
*wb_child_domain(void)
1331 return child_domain
;
1334 struct child_handler_state
{
1335 struct winbindd_child
*child
;
1336 struct winbindd_cli_state cli
;
1339 static void child_handler(struct tevent_context
*ev
, struct tevent_fd
*fde
,
1340 uint16_t flags
, void *private_data
)
1342 struct child_handler_state
*state
=
1343 (struct child_handler_state
*)private_data
;
1346 /* fetch a request from the main daemon */
1347 status
= child_read_request(state
->cli
.sock
, state
->cli
.request
);
1349 if (!NT_STATUS_IS_OK(status
)) {
1350 /* we lost contact with our parent */
1354 DEBUG(4,("child daemon request %d\n",
1355 (int)state
->cli
.request
->cmd
));
1357 ZERO_STRUCTP(state
->cli
.response
);
1358 state
->cli
.request
->null_term
= '\0';
1359 state
->cli
.mem_ctx
= talloc_tos();
1360 child_process_request(state
->child
, &state
->cli
);
1362 DEBUG(4, ("Finished processing child request %d\n",
1363 (int)state
->cli
.request
->cmd
));
1365 SAFE_FREE(state
->cli
.request
->extra_data
.data
);
1367 status
= child_write_response(state
->cli
.sock
, state
->cli
.response
);
1368 if (!NT_STATUS_IS_OK(status
)) {
1373 static bool fork_domain_child(struct winbindd_child
*child
)
1376 struct child_handler_state state
;
1377 struct winbindd_request request
;
1378 struct winbindd_response response
;
1379 struct winbindd_domain
*primary_domain
= NULL
;
1382 struct tevent_fd
*fde
;
1384 if (child
->domain
) {
1385 DEBUG(10, ("fork_domain_child called for domain '%s'\n",
1386 child
->domain
->name
));
1388 DEBUG(10, ("fork_domain_child called without domain.\n"));
1391 if (socketpair(AF_UNIX
, SOCK_STREAM
, 0, fdpair
) != 0) {
1392 DEBUG(0, ("Could not open child pipe: %s\n",
1398 state
.child
= child
;
1399 state
.cli
.pid
= getpid();
1400 state
.cli
.request
= &request
;
1401 state
.cli
.response
= &response
;
1403 child
->pid
= fork();
1405 if (child
->pid
== -1) {
1406 DEBUG(0, ("Could not fork: %s\n", strerror(errno
)));
1412 if (child
->pid
!= 0) {
1418 nread
= sys_read(fdpair
[1], &status
, sizeof(status
));
1419 if (nread
!= sizeof(status
)) {
1420 DEBUG(1, ("fork_domain_child: Could not read child status: "
1421 "nread=%d, error=%s\n", (int)nread
,
1426 if (!NT_STATUS_IS_OK(status
)) {
1427 DEBUG(1, ("fork_domain_child: Child status is %s\n",
1428 nt_errstr(status
)));
1433 child
->next
= child
->prev
= NULL
;
1434 DLIST_ADD(winbindd_children
, child
);
1435 child
->sock
= fdpair
[1];
1440 child_domain
= child
->domain
;
1442 DEBUG(10, ("Child process %d\n", (int)getpid()));
1444 state
.cli
.sock
= fdpair
[0];
1447 status
= winbindd_reinit_after_fork(child
, child
->logfilename
);
1449 nwritten
= sys_write(state
.cli
.sock
, &status
, sizeof(status
));
1450 if (nwritten
!= sizeof(status
)) {
1451 DEBUG(1, ("fork_domain_child: Could not write status: "
1452 "nwritten=%d, error=%s\n", (int)nwritten
,
1456 if (!NT_STATUS_IS_OK(status
)) {
1457 DEBUG(1, ("winbindd_reinit_after_fork failed: %s\n",
1458 nt_errstr(status
)));
1462 /* Handle online/offline messages. */
1463 messaging_register(winbind_messaging_context(), NULL
,
1464 MSG_WINBIND_OFFLINE
, child_msg_offline
);
1465 messaging_register(winbind_messaging_context(), NULL
,
1466 MSG_WINBIND_ONLINE
, child_msg_online
);
1467 messaging_register(winbind_messaging_context(), NULL
,
1468 MSG_DUMP_EVENT_LIST
, child_msg_dump_event_list
);
1469 messaging_register(winbind_messaging_context(), NULL
,
1470 MSG_DEBUG
, debug_message
);
1471 messaging_register(winbind_messaging_context(), NULL
,
1472 MSG_WINBIND_IP_DROPPED
,
1473 winbind_msg_ip_dropped
);
1476 primary_domain
= find_our_domain();
1478 if (primary_domain
== NULL
) {
1479 smb_panic("no primary domain found");
1482 /* It doesn't matter if we allow cache login,
1483 * try to bring domain online after fork. */
1484 if ( child
->domain
) {
1485 child
->domain
->startup
= True
;
1486 child
->domain
->startup_time
= time_mono(NULL
);
1487 /* we can be in primary domain or in trusted domain
1488 * If we are in trusted domain, set the primary domain
1489 * in start-up mode */
1490 if (!(child
->domain
->internal
)) {
1491 set_domain_online_request(child
->domain
);
1492 if (!(child
->domain
->primary
)) {
1493 primary_domain
->startup
= True
;
1494 primary_domain
->startup_time
= time_mono(NULL
);
1495 set_domain_online_request(primary_domain
);
1501 * We are in idmap child, make sure that we set the
1502 * check_online_event to bring primary domain online.
1504 if (child
== idmap_child()) {
1505 set_domain_online_request(primary_domain
);
1508 /* We might be in the idmap child...*/
1509 if (child
->domain
&& !(child
->domain
->internal
) &&
1510 lp_winbind_offline_logon()) {
1512 set_domain_online_request(child
->domain
);
1514 if (primary_domain
&& (primary_domain
!= child
->domain
)) {
1515 /* We need to talk to the primary
1516 * domain as well as the trusted
1517 * domain inside a trusted domain
1520 * set_dc_type_and_flags_trustinfo()
1523 set_domain_online_request(primary_domain
);
1526 child
->lockout_policy_event
= tevent_add_timer(
1527 winbind_event_context(), NULL
, timeval_zero(),
1528 account_lockout_policy_handler
,
1532 if (child
->domain
&& child
->domain
->primary
&&
1533 !USE_KERBEROS_KEYTAB
&&
1534 lp_server_role() == ROLE_DOMAIN_MEMBER
) {
1536 struct timeval next_change
;
1538 if (calculate_next_machine_pwd_change(child
->domain
->name
,
1540 child
->machine_password_change_event
= tevent_add_timer(
1541 winbind_event_context(), NULL
, next_change
,
1542 machine_password_change_handler
,
1547 fde
= tevent_add_fd(winbind_event_context(), NULL
, state
.cli
.sock
,
1548 TEVENT_FD_READ
, child_handler
, &state
);
1550 DEBUG(1, ("tevent_add_fd failed\n"));
1557 TALLOC_CTX
*frame
= talloc_stackframe();
1559 ret
= tevent_loop_once(winbind_event_context());
1561 DEBUG(1, ("tevent_loop_once failed: %s\n",
1566 if (child
->domain
&& child
->domain
->startup
&&
1567 (time_mono(NULL
) > child
->domain
->startup_time
+ 30)) {
1568 /* No longer in "startup" mode. */
1569 DEBUG(10,("fork_domain_child: domain %s no longer in 'startup' mode.\n",
1570 child
->domain
->name
));
1571 child
->domain
->startup
= False
;
1578 void winbind_msg_ip_dropped_parent(struct messaging_context
*msg_ctx
,
1581 struct server_id server_id
,
1584 struct winbindd_child
*child
;
1586 winbind_msg_ip_dropped(msg_ctx
, private_data
, msg_type
,
1590 for (child
= winbindd_children
; child
!= NULL
; child
= child
->next
) {
1591 messaging_send_buf(msg_ctx
, pid_to_procid(child
->pid
),
1592 msg_type
, data
->data
, data
->length
);