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 "winbindd_traceid.h"
37 #include "../libcli/security/security.h"
38 #include "system/select.h"
40 #include "../lib/util/tevent_unix.h"
41 #include "lib/param/loadparm.h"
42 #include "lib/util/sys_rw.h"
43 #include "lib/util/sys_rw_data.h"
45 #include "lib/util/string_wrappers.h"
46 #include "lib/global_contexts.h"
48 #include "libcli/auth/netlogon_creds_cli.h"
49 #include "../lib/util/pidfile.h"
50 #include "librpc/gen_ndr/ndr_winbind_c.h"
51 #include "lib/util/util_process.h"
54 #define DBGC_CLASS DBGC_WINBIND
56 static void forall_domain_children(bool (*fn)(struct winbindd_child *c,
60 struct winbindd_domain *d;
62 for (d = domain_list(); d != NULL; d = d->next) {
65 for (i = 0; i < lp_winbind_max_domain_connections(); i++) {
66 struct winbindd_child *c = &d->children[i];
73 ok = fn(c, private_data);
81 static void forall_children(bool (*fn)(struct winbindd_child *c,
85 struct winbindd_child *c;
90 ok = fn(c, private_data);
98 ok = fn(c, private_data);
104 forall_domain_children(fn, private_data);
107 /* Read some data from a client connection */
109 static NTSTATUS child_read_request(int sock, struct winbindd_request *wreq)
113 status = read_data_ntstatus(sock, (char *)wreq, sizeof(*wreq));
114 if (!NT_STATUS_IS_OK(status)) {
115 DEBUG(3, ("child_read_request: read_data failed: %s\n",
120 if (wreq->extra_len == 0) {
121 wreq->extra_data.data = NULL;
125 DEBUG(10, ("Need to read %d extra bytes\n", (int)wreq->extra_len));
127 wreq->extra_data.data = SMB_MALLOC_ARRAY(char, wreq->extra_len + 1);
128 if (wreq->extra_data.data == NULL) {
129 DEBUG(0, ("malloc failed\n"));
130 return NT_STATUS_NO_MEMORY;
133 /* Ensure null termination */
134 wreq->extra_data.data[wreq->extra_len] = '\0';
136 status = read_data_ntstatus(sock, wreq->extra_data.data,
138 if (!NT_STATUS_IS_OK(status)) {
139 DEBUG(0, ("Could not read extra data: %s\n",
145 static NTSTATUS child_write_response(int sock, struct winbindd_response *wrsp)
150 iov[0].iov_base = (void *)wrsp;
151 iov[0].iov_len = sizeof(struct winbindd_response);
154 if (wrsp->length > sizeof(struct winbindd_response)) {
155 iov[1].iov_base = (void *)wrsp->extra_data.data;
156 iov[1].iov_len = wrsp->length-iov[0].iov_len;
160 DEBUG(10, ("Writing %d bytes to parent\n", (int)wrsp->length));
162 if (write_data_iov(sock, iov, iov_count) != wrsp->length) {
163 DEBUG(0, ("Could not write result\n"));
164 return NT_STATUS_INVALID_HANDLE;
171 * Do winbind child async request. This is not simply wb_simple_trans. We have
172 * to do the queueing ourselves because while a request is queued, the child
173 * might have crashed, and we have to re-fork it in the _trigger function.
176 struct wb_child_request_state {
177 struct tevent_context *ev;
178 struct tevent_req *queue_subreq;
179 struct tevent_req *subreq;
180 struct winbindd_child *child;
181 struct winbindd_request *request;
182 struct winbindd_response *response;
185 static bool fork_domain_child(struct winbindd_child *child);
187 static void wb_child_request_waited(struct tevent_req *subreq);
188 static void wb_child_request_done(struct tevent_req *subreq);
189 static void wb_child_request_orphaned(struct tevent_req *subreq);
191 static void wb_child_request_cleanup(struct tevent_req *req,
192 enum tevent_req_state req_state);
194 struct tevent_req *wb_child_request_send(TALLOC_CTX *mem_ctx,
195 struct tevent_context *ev,
196 struct winbindd_child *child,
197 struct winbindd_request *request)
199 struct tevent_req *req;
200 struct wb_child_request_state *state;
201 struct tevent_req *subreq;
203 req = tevent_req_create(mem_ctx, &state,
204 struct wb_child_request_state);
210 state->child = child;
213 * We have to make a copy of "request", because our caller
214 * might drop us via talloc_free().
216 * The talloc_move() magic in wb_child_request_cleanup() keeps
217 * all the requests, but if we are sitting deep within
218 * writev_send() down to the client, we have given it the
219 * pointer to "request". As our caller lost interest, it will
220 * just free "request", while writev_send still references it.
223 state->request = talloc_memdup(state, request, sizeof(*request));
224 if (tevent_req_nomem(state->request, req)) {
225 return tevent_req_post(req, ev);
228 state->request->traceid = debug_traceid_get();
230 if (request->extra_data.data != NULL) {
231 state->request->extra_data.data = talloc_memdup(
233 request->extra_data.data,
235 if (tevent_req_nomem(state->request->extra_data.data, req)) {
236 return tevent_req_post(req, ev);
240 subreq = tevent_queue_wait_send(state, ev, child->queue);
241 if (tevent_req_nomem(subreq, req)) {
242 return tevent_req_post(req, ev);
244 tevent_req_set_callback(subreq, wb_child_request_waited, req);
245 state->queue_subreq = subreq;
247 tevent_req_set_cleanup_fn(req, wb_child_request_cleanup);
252 static void wb_child_request_waited(struct tevent_req *subreq)
254 struct tevent_req *req = tevent_req_callback_data(
255 subreq, struct tevent_req);
256 struct wb_child_request_state *state = tevent_req_data(
257 req, struct wb_child_request_state);
260 ok = tevent_queue_wait_recv(subreq);
266 * We need to keep state->queue_subreq
267 * in order to block the queue.
271 if ((state->child->sock == -1) && (!fork_domain_child(state->child))) {
272 tevent_req_error(req, errno);
276 tevent_fd_set_flags(state->child->monitor_fde, 0);
278 subreq = wb_simple_trans_send(state, global_event_context(), NULL,
279 state->child->sock, state->request);
280 if (tevent_req_nomem(subreq, req)) {
284 state->subreq = subreq;
285 tevent_req_set_callback(subreq, wb_child_request_done, req);
286 tevent_req_set_endtime(req, state->ev, timeval_current_ofs(300, 0));
289 static void wb_child_request_done(struct tevent_req *subreq)
291 struct tevent_req *req = tevent_req_callback_data(
292 subreq, struct tevent_req);
293 struct wb_child_request_state *state = tevent_req_data(
294 req, struct wb_child_request_state);
297 ret = wb_simple_trans_recv(subreq, state, &state->response, &err);
298 /* Freeing the subrequest is deferred until the cleanup function,
299 * which has to know whether a subrequest exists, and consequently
300 * decide whether to shut down the pipe to the child process.
303 tevent_req_error(req, err);
306 tevent_req_done(req);
309 static void wb_child_request_orphaned(struct tevent_req *subreq)
311 struct winbindd_child *child =
312 (struct winbindd_child *)tevent_req_callback_data_void(subreq);
314 DBG_WARNING("cleanup orphaned subreq[%p]\n", subreq);
317 if (child->domain != NULL) {
319 * If the child is attached to a domain,
320 * we need to make sure the domain queue
321 * can move forward, after the orphaned
324 tevent_queue_start(child->domain->queue);
328 int wb_child_request_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
329 struct winbindd_response **presponse, int *err)
331 struct wb_child_request_state *state = tevent_req_data(
332 req, struct wb_child_request_state);
334 if (tevent_req_is_unix_error(req, err)) {
337 *presponse = talloc_move(mem_ctx, &state->response);
341 static void wb_child_request_cleanup(struct tevent_req *req,
342 enum tevent_req_state req_state)
344 struct wb_child_request_state *state =
345 tevent_req_data(req, struct wb_child_request_state);
347 if (state->subreq == NULL) {
348 /* nothing to cleanup */
352 if (req_state == TEVENT_REQ_RECEIVED) {
353 struct tevent_req *subreq = NULL;
356 * Our caller gave up, but we need to keep
357 * the low level request (wb_simple_trans)
358 * in order to maintain the parent child protocol.
360 * We also need to keep the child queue blocked
361 * until we got the response from the child.
364 subreq = talloc_move(state->child->queue, &state->subreq);
365 talloc_move(subreq, &state->queue_subreq);
366 talloc_move(subreq, &state->request);
367 tevent_req_set_callback(subreq,
368 wb_child_request_orphaned,
371 DBG_WARNING("keep orphaned subreq[%p]\n", subreq);
375 TALLOC_FREE(state->subreq);
376 TALLOC_FREE(state->queue_subreq);
378 tevent_fd_set_flags(state->child->monitor_fde, TEVENT_FD_READ);
380 if (state->child->domain != NULL) {
382 * If the child is attached to a domain,
383 * we need to make sure the domain queue
384 * can move forward, after the request
387 tevent_queue_start(state->child->domain->queue);
390 if (req_state == TEVENT_REQ_DONE) {
391 /* transmitted request and got response */
396 * Failed to transmit and receive response, or request
397 * cancelled while being serviced.
398 * The basic parent/child communication broke, close
401 TALLOC_FREE(state->child->monitor_fde);
402 close(state->child->sock);
403 state->child->sock = -1;
406 static void child_socket_readable(struct tevent_context *ev,
407 struct tevent_fd *fde,
411 struct winbindd_child *child = private_data;
413 if ((flags & TEVENT_FD_READ) == 0) {
417 TALLOC_FREE(child->monitor_fde);
420 * We're only active when there is no outstanding child
421 * request. Arriving here means the child closed its socket,
422 * it died. Do the same here.
425 SMB_ASSERT(child->sock != -1);
431 static struct winbindd_child *choose_domain_child(struct winbindd_domain *domain)
433 struct winbindd_child *shortest = &domain->children[0];
434 struct winbindd_child *current;
437 for (i=0; i<lp_winbind_max_domain_connections(); i++) {
438 size_t shortest_len, current_len;
440 current = &domain->children[i];
441 current_len = tevent_queue_length(current->queue);
443 if (current_len == 0) {
448 shortest_len = tevent_queue_length(shortest->queue);
450 if (current_len < shortest_len) {
458 struct dcerpc_binding_handle *dom_child_handle(struct winbindd_domain *domain)
460 return domain->binding_handle;
463 struct wb_domain_request_state {
464 struct tevent_context *ev;
465 struct tevent_queue_entry *queue_entry;
466 struct winbindd_domain *domain;
467 struct winbindd_child *child;
468 struct winbindd_request *request;
469 struct winbindd_request *init_req;
470 struct winbindd_response *response;
471 struct tevent_req *pending_subreq;
472 struct wbint_InitConnection r;
475 static void wb_domain_request_cleanup(struct tevent_req *req,
476 enum tevent_req_state req_state)
478 struct wb_domain_request_state *state = tevent_req_data(
479 req, struct wb_domain_request_state);
482 * If we're completely done or got a failure.
483 * we should remove ourself from the domain queue,
484 * after removing the child subreq from the child queue
485 * and give the next one in the queue the chance
486 * to check for an idle child.
488 TALLOC_FREE(state->pending_subreq);
489 TALLOC_FREE(state->queue_entry);
490 tevent_queue_start(state->domain->queue);
493 static void wb_domain_request_trigger(struct tevent_req *req,
495 static void wb_domain_request_gotdc(struct tevent_req *subreq);
496 static void wb_domain_request_initialized(struct tevent_req *subreq);
497 static void wb_domain_request_done(struct tevent_req *subreq);
499 struct tevent_req *wb_domain_request_send(TALLOC_CTX *mem_ctx,
500 struct tevent_context *ev,
501 struct winbindd_domain *domain,
502 struct winbindd_request *request)
504 struct tevent_req *req;
505 struct wb_domain_request_state *state;
507 req = tevent_req_create(mem_ctx, &state,
508 struct wb_domain_request_state);
513 state->domain = domain;
515 state->request = request;
517 tevent_req_set_cleanup_fn(req, wb_domain_request_cleanup);
519 state->queue_entry = tevent_queue_add_entry(
520 domain->queue, state->ev, req,
521 wb_domain_request_trigger, NULL);
522 if (tevent_req_nomem(state->queue_entry, req)) {
523 return tevent_req_post(req, ev);
529 static void wb_domain_request_trigger(struct tevent_req *req,
532 struct wb_domain_request_state *state = tevent_req_data(
533 req, struct wb_domain_request_state);
534 struct winbindd_domain *domain = state->domain;
535 struct tevent_req *subreq = NULL;
536 size_t shortest_queue_length;
538 state->child = choose_domain_child(domain);
539 shortest_queue_length = tevent_queue_length(state->child->queue);
540 if (shortest_queue_length > 0) {
542 * All children are busy, we need to stop
543 * the queue and untrigger our own queue
544 * entry. Once a pending request
545 * is done it calls tevent_queue_start
546 * and we get retriggered.
549 tevent_queue_stop(state->domain->queue);
550 tevent_queue_entry_untrigger(state->queue_entry);
554 if (domain->initialized) {
555 subreq = wb_child_request_send(state, state->ev, state->child,
557 if (tevent_req_nomem(subreq, req)) {
560 tevent_req_set_callback(subreq, wb_domain_request_done, req);
561 state->pending_subreq = subreq;
564 * Once the domain is initialized and
565 * once we placed our real request into the child queue,
566 * we can remove ourself from the domain queue
567 * and give the next one in the queue the chance
568 * to check for an idle child.
570 TALLOC_FREE(state->queue_entry);
574 state->init_req = talloc_zero(state, struct winbindd_request);
575 if (tevent_req_nomem(state->init_req, req)) {
579 if (IS_DC || domain->primary || domain->internal) {
580 /* The primary domain has to find the DC name itself */
581 state->r.in.dcname = talloc_strdup(state, "");
582 if (tevent_req_nomem(state->r.in.dcname, req)) {
586 subreq = dcerpc_wbint_InitConnection_r_send(state,
588 state->child->binding_handle,
590 if (tevent_req_nomem(subreq, req)) {
593 tevent_req_set_callback(subreq, wb_domain_request_initialized,
595 state->pending_subreq = subreq;
600 * This is *not* the primary domain,
601 * let's ask our DC about a DC name.
603 * We prefer getting a dns name in dc_unc,
604 * which is indicated by DS_RETURN_DNS_NAME.
605 * For NT4 domains we still get the netbios name.
607 subreq = wb_dsgetdcname_send(state, state->ev,
609 NULL, /* domain_guid */
610 NULL, /* site_name */
611 DS_RETURN_DNS_NAME); /* flags */
612 if (tevent_req_nomem(subreq, req)) {
615 tevent_req_set_callback(subreq, wb_domain_request_gotdc, req);
616 state->pending_subreq = subreq;
620 static void wb_domain_request_gotdc(struct tevent_req *subreq)
622 struct tevent_req *req = tevent_req_callback_data(
623 subreq, struct tevent_req);
624 struct wb_domain_request_state *state = tevent_req_data(
625 req, struct wb_domain_request_state);
626 struct netr_DsRGetDCNameInfo *dcinfo = NULL;
628 const char *dcname = NULL;
630 state->pending_subreq = NULL;
632 status = wb_dsgetdcname_recv(subreq, state, &dcinfo);
634 if (tevent_req_nterror(req, status)) {
637 dcname = dcinfo->dc_unc;
638 while (dcname != NULL && *dcname == '\\') {
642 state->r.in.dcname = talloc_strdup(state, dcname);
643 if (tevent_req_nomem(state->r.in.dcname, req)) {
649 subreq = dcerpc_wbint_InitConnection_r_send(state,
651 state->child->binding_handle,
653 if (tevent_req_nomem(subreq, req)) {
656 tevent_req_set_callback(subreq, wb_domain_request_initialized, req);
657 state->pending_subreq = subreq;
660 static void wb_domain_request_initialized(struct tevent_req *subreq)
662 struct tevent_req *req = tevent_req_callback_data(
663 subreq, struct tevent_req);
664 struct wb_domain_request_state *state = tevent_req_data(
665 req, struct wb_domain_request_state);
668 state->pending_subreq = NULL;
670 status = dcerpc_wbint_InitConnection_r_recv(subreq, state);
672 if (NT_STATUS_IS_ERR(status)) {
673 tevent_req_error(req, map_errno_from_nt_status(status));
677 status = state->r.out.result;
678 if (NT_STATUS_IS_ERR(status)) {
679 tevent_req_error(req, map_errno_from_nt_status(status));
683 state->domain->sid = *state->r.out.sid;
685 talloc_free(state->domain->name);
686 state->domain->name = talloc_strdup(state->domain, *state->r.out.name);
687 if (state->domain->name == NULL) {
688 tevent_req_error(req, ENOMEM);
692 if (*state->r.out.alt_name != NULL &&
693 strlen(*state->r.out.alt_name) > 0) {
694 talloc_free(state->domain->alt_name);
696 state->domain->alt_name = talloc_strdup(state->domain,
697 *state->r.out.alt_name);
698 if (state->domain->alt_name == NULL) {
699 tevent_req_error(req, ENOMEM);
704 state->domain->native_mode =
705 (*state->r.out.flags & WB_DOMINFO_DOMAIN_NATIVE);
706 state->domain->active_directory =
707 (*state->r.out.flags & WB_DOMINFO_DOMAIN_AD);
708 state->domain->initialized = true;
710 subreq = wb_child_request_send(state, state->ev, state->child,
712 if (tevent_req_nomem(subreq, req)) {
715 tevent_req_set_callback(subreq, wb_domain_request_done, req);
716 state->pending_subreq = subreq;
719 * Once the domain is initialized and
720 * once we placed our real request into the child queue,
721 * we can remove ourself from the domain queue
722 * and give the next one in the queue the chance
723 * to check for an idle child.
725 TALLOC_FREE(state->queue_entry);
728 static void wb_domain_request_done(struct tevent_req *subreq)
730 struct tevent_req *req = tevent_req_callback_data(
731 subreq, struct tevent_req);
732 struct wb_domain_request_state *state = tevent_req_data(
733 req, struct wb_domain_request_state);
736 state->pending_subreq = NULL;
738 ret = wb_child_request_recv(subreq, talloc_tos(), &state->response,
742 tevent_req_error(req, err);
745 tevent_req_done(req);
748 int wb_domain_request_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
749 struct winbindd_response **presponse, int *err)
751 struct wb_domain_request_state *state = tevent_req_data(
752 req, struct wb_domain_request_state);
754 if (tevent_req_is_unix_error(req, err)) {
757 *presponse = talloc_move(mem_ctx, &state->response);
761 static void child_process_request(struct winbindd_child *child,
762 struct winbindd_cli_state *state)
764 struct winbindd_domain *domain = child->domain;
766 /* Free response data - we may be interrupted and receive another
767 command before being able to send this data off. */
769 state->response->result = WINBINDD_ERROR;
770 state->response->length = sizeof(struct winbindd_response);
772 /* as all requests in the child are sync, we can use talloc_tos() */
773 state->mem_ctx = talloc_tos();
775 /* Process command */
776 state->response->result = winbindd_dual_ndrcmd(domain, state);
779 void setup_child(struct winbindd_domain *domain, struct winbindd_child *child,
780 const char *logprefix,
783 const struct loadparm_substitution *lp_sub =
784 loadparm_s3_global_substitution();
786 if (logprefix && logname) {
787 char *logbase = NULL;
789 if (*lp_logfile(talloc_tos(), lp_sub)) {
792 if (asprintf(&logbase, "%s", lp_logfile(talloc_tos(), lp_sub)) < 0) {
793 smb_panic("Internal error: asprintf failed");
796 if ((end = strrchr_m(logbase, '/'))) {
800 if (asprintf(&logbase, "%s", get_dyn_LOGFILEBASE()) < 0) {
801 smb_panic("Internal error: asprintf failed");
805 if (asprintf(&child->logfilename, "%s/%s-%s",
806 logbase, logprefix, logname) < 0) {
808 smb_panic("Internal error: asprintf failed");
813 smb_panic("Internal error: logprefix == NULL && "
819 child->domain = domain;
820 child->queue = tevent_queue_create(NULL, "winbind_child");
821 SMB_ASSERT(child->queue != NULL);
823 child->binding_handle = wbint_binding_handle(NULL, NULL, child);
824 SMB_ASSERT(child->binding_handle != NULL);
827 struct winbind_child_died_state {
829 struct winbindd_child *child;
832 static bool winbind_child_died_fn(struct winbindd_child *child,
835 struct winbind_child_died_state *state = private_data;
837 if (child->pid == state->pid) {
838 state->child = child;
844 void winbind_child_died(pid_t pid)
846 struct winbind_child_died_state state = { .pid = pid };
848 forall_children(winbind_child_died_fn, &state);
850 if (state.child == NULL) {
851 DEBUG(5, ("Already reaped child %u died\n", (unsigned int)pid));
855 state.child->pid = 0;
858 /* Ensure any negative cache entries with the netbios or realm names are removed. */
860 void winbindd_flush_negative_conn_cache(struct winbindd_domain *domain)
862 flush_negative_conn_cache_for_domain(domain->name);
863 if (domain->alt_name != NULL) {
864 flush_negative_conn_cache_for_domain(domain->alt_name);
869 * Parent winbindd process sets its own debug level first and then
870 * sends a message to all the winbindd children to adjust their debug
871 * level to that of parents.
874 struct winbind_msg_relay_state {
875 struct messaging_context *msg_ctx;
880 static bool winbind_msg_relay_fn(struct winbindd_child *child,
883 struct winbind_msg_relay_state *state = private_data;
885 DBG_DEBUG("sending message to pid %u.\n",
886 (unsigned int)child->pid);
888 messaging_send(state->msg_ctx, pid_to_procid(child->pid),
889 state->msg_type, state->data);
893 void winbind_msg_debug(struct messaging_context *msg_ctx,
896 struct server_id server_id,
899 struct winbind_msg_relay_state state = {
900 .msg_ctx = msg_ctx, .msg_type = msg_type, .data = data
903 DEBUG(10,("winbind_msg_debug: got debug message.\n"));
905 debug_message(msg_ctx, private_data, MSG_DEBUG, server_id, data);
907 forall_children(winbind_msg_relay_fn, &state);
910 void winbind_disconnect_dc_parent(struct messaging_context *msg_ctx,
913 struct server_id server_id,
916 struct winbind_msg_relay_state state = {
917 .msg_ctx = msg_ctx, .msg_type = msg_type, .data = data
920 DBG_DEBUG("Got disconnect_dc message\n");
922 forall_children(winbind_msg_relay_fn, &state);
925 static void winbindd_msg_reload_services_child(struct messaging_context *msg,
928 struct server_id server_id,
931 DBG_DEBUG("Got reload-config message\n");
932 winbindd_reload_services_file((const char *)private_data);
935 /* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
936 void winbindd_msg_reload_services_parent(struct messaging_context *msg,
939 struct server_id server_id,
942 struct winbind_msg_relay_state state = {
944 .msg_type = msg_type,
948 DBG_DEBUG("Got reload-config message\n");
950 /* Flush various caches */
951 winbindd_flush_caches();
953 winbindd_reload_services_file((const char *)private_data);
955 forall_children(winbind_msg_relay_fn, &state);
958 /* Set our domains as offline and forward the offline message to our children. */
960 struct winbind_msg_on_offline_state {
961 struct messaging_context *msg_ctx;
965 static bool winbind_msg_on_offline_fn(struct winbindd_child *child,
968 struct winbind_msg_on_offline_state *state = private_data;
970 if (child->domain->internal) {
975 * Each winbindd child should only process requests for one
976 * domain - make sure we only set it online / offline for that
979 DBG_DEBUG("sending message to pid %u for domain %s.\n",
980 (unsigned int)child->pid, child->domain->name);
982 messaging_send_buf(state->msg_ctx,
983 pid_to_procid(child->pid),
985 (const uint8_t *)child->domain->name,
986 strlen(child->domain->name)+1);
991 void winbind_msg_offline(struct messaging_context *msg_ctx,
994 struct server_id server_id,
997 struct winbind_msg_on_offline_state state = {
999 .msg_type = MSG_WINBIND_OFFLINE,
1001 struct winbindd_domain *domain;
1003 DEBUG(10,("winbind_msg_offline: got offline message.\n"));
1005 if (!lp_winbind_offline_logon()) {
1006 DEBUG(10,("winbind_msg_offline: rejecting offline message.\n"));
1010 /* Set our global state as offline. */
1011 if (!set_global_winbindd_state_offline()) {
1012 DEBUG(10,("winbind_msg_offline: offline request failed.\n"));
1016 /* Set all our domains as offline. */
1017 for (domain = domain_list(); domain; domain = domain->next) {
1018 if (domain->internal) {
1021 DEBUG(5,("winbind_msg_offline: marking %s offline.\n", domain->name));
1022 domain->online = false;
1025 forall_domain_children(winbind_msg_on_offline_fn, &state);
1028 /* Set our domains as online and forward the online message to our children. */
1030 void winbind_msg_online(struct messaging_context *msg_ctx,
1033 struct server_id server_id,
1036 struct winbind_msg_on_offline_state state = {
1038 .msg_type = MSG_WINBIND_ONLINE,
1041 DEBUG(10,("winbind_msg_online: got online message.\n"));
1043 if (!lp_winbind_offline_logon()) {
1044 DEBUG(10,("winbind_msg_online: rejecting online message.\n"));
1048 /* Set our global state as online. */
1049 set_global_winbindd_state_online();
1051 smb_nscd_flush_user_cache();
1052 smb_nscd_flush_group_cache();
1054 /* Tell all our child domains to go online online. */
1055 forall_domain_children(winbind_msg_on_offline_fn, &state);
1058 static const char *collect_onlinestatus(TALLOC_CTX *mem_ctx)
1060 struct winbindd_domain *domain;
1063 if ((buf = talloc_asprintf(mem_ctx, "global:%s ",
1064 get_global_winbindd_state_offline() ?
1065 "Offline":"Online")) == NULL) {
1069 for (domain = domain_list(); domain; domain = domain->next) {
1070 if ((buf = talloc_asprintf_append_buffer(buf, "%s:%s ",
1073 "Online":"Offline")) == NULL) {
1078 buf = talloc_asprintf_append_buffer(buf, "\n");
1080 DEBUG(5,("collect_onlinestatus: %s", buf));
1085 void winbind_msg_onlinestatus(struct messaging_context *msg_ctx,
1088 struct server_id server_id,
1091 TALLOC_CTX *mem_ctx;
1092 const char *message;
1094 DEBUG(5,("winbind_msg_onlinestatus received.\n"));
1096 mem_ctx = talloc_init("winbind_msg_onlinestatus");
1097 if (mem_ctx == NULL) {
1101 message = collect_onlinestatus(mem_ctx);
1102 if (message == NULL) {
1103 talloc_destroy(mem_ctx);
1107 messaging_send_buf(msg_ctx, server_id, MSG_WINBIND_ONLINESTATUS,
1108 (const uint8_t *)message, strlen(message) + 1);
1110 talloc_destroy(mem_ctx);
1113 void winbind_msg_dump_domain_list(struct messaging_context *msg_ctx,
1116 struct server_id server_id,
1119 TALLOC_CTX *mem_ctx;
1120 const char *message = NULL;
1121 const char *domain = NULL;
1124 struct winbindd_domain *dom = NULL;
1126 DEBUG(5,("winbind_msg_dump_domain_list received.\n"));
1128 mem_ctx = talloc_init("winbind_msg_dump_domain_list");
1133 if (data->length > 0) {
1134 domain = (const char *)data->data;
1139 DEBUG(5,("winbind_msg_dump_domain_list for domain: %s\n",
1142 message = NDR_PRINT_STRUCT_STRING(mem_ctx, winbindd_domain,
1143 find_domain_from_name_noinit(domain));
1145 talloc_destroy(mem_ctx);
1149 messaging_send_buf(msg_ctx, server_id,
1150 MSG_WINBIND_DUMP_DOMAIN_LIST,
1151 (const uint8_t *)message, strlen(message) + 1);
1153 talloc_destroy(mem_ctx);
1158 DEBUG(5,("winbind_msg_dump_domain_list all domains\n"));
1160 for (dom = domain_list(); dom; dom=dom->next) {
1161 message = NDR_PRINT_STRUCT_STRING(mem_ctx, winbindd_domain, dom);
1163 talloc_destroy(mem_ctx);
1167 s = talloc_asprintf_append(s, "%s\n", message);
1169 talloc_destroy(mem_ctx);
1174 status = messaging_send_buf(msg_ctx, server_id,
1175 MSG_WINBIND_DUMP_DOMAIN_LIST,
1176 (uint8_t *)s, strlen(s) + 1);
1177 if (!NT_STATUS_IS_OK(status)) {
1178 DEBUG(0,("failed to send message: %s\n",
1179 nt_errstr(status)));
1182 talloc_destroy(mem_ctx);
1185 static void account_lockout_policy_handler(struct tevent_context *ctx,
1186 struct tevent_timer *te,
1190 struct winbindd_child *child =
1191 (struct winbindd_child *)private_data;
1192 TALLOC_CTX *mem_ctx = NULL;
1193 struct samr_DomInfo12 lockout_policy;
1196 DEBUG(10,("account_lockout_policy_handler called\n"));
1198 TALLOC_FREE(child->lockout_policy_event);
1200 if ( !winbindd_can_contact_domain( child->domain ) ) {
1201 DEBUG(10,("account_lockout_policy_handler: Removing myself since I "
1202 "do not have an incoming trust to domain %s\n",
1203 child->domain->name));
1208 mem_ctx = talloc_init("account_lockout_policy_handler ctx");
1210 result = NT_STATUS_NO_MEMORY;
1212 result = wb_cache_lockout_policy(child->domain, mem_ctx,
1215 TALLOC_FREE(mem_ctx);
1217 if (!NT_STATUS_IS_OK(result)) {
1218 DEBUG(10,("account_lockout_policy_handler: lockout_policy failed error %s\n",
1219 nt_errstr(result)));
1222 child->lockout_policy_event = tevent_add_timer(global_event_context(), NULL,
1223 timeval_current_ofs(3600, 0),
1224 account_lockout_policy_handler,
1228 static time_t get_machine_password_timeout(void)
1230 /* until we have gpo support use lp setting */
1231 return lp_machine_password_timeout();
1234 static bool calculate_next_machine_pwd_change(const char *domain,
1237 time_t pass_last_set_time;
1243 pw = secrets_fetch_machine_password(domain,
1244 &pass_last_set_time,
1248 DEBUG(0,("cannot fetch own machine password ????"));
1254 timeout = get_machine_password_timeout();
1256 DEBUG(10,("machine password never expires\n"));
1260 tv.tv_sec = pass_last_set_time;
1261 DEBUG(10, ("password last changed %s\n",
1262 timeval_string(talloc_tos(), &tv, false)));
1263 tv.tv_sec += timeout;
1264 DEBUGADD(10, ("password valid until %s\n",
1265 timeval_string(talloc_tos(), &tv, false)));
1267 if (time(NULL) < (pass_last_set_time + timeout)) {
1268 next_change = pass_last_set_time + timeout;
1269 DEBUG(10,("machine password still valid until: %s\n",
1270 http_timestring(talloc_tos(), next_change)));
1271 *t = timeval_set(next_change, 0);
1273 if (lp_clustering()) {
1276 * When having a cluster, we have several
1277 * winbinds racing for the password change. In
1278 * the machine_password_change_handler()
1279 * function we check if someone else was
1280 * faster when the event triggers. We add a
1281 * 255-second random delay here, so that we
1282 * don't run to change the password at the
1283 * exact same moment.
1285 generate_random_buffer(&randbuf, sizeof(randbuf));
1286 DEBUG(10, ("adding %d seconds randomness\n",
1288 t->tv_sec += randbuf;
1293 DEBUG(10,("machine password expired, needs immediate change\n"));
1295 *t = timeval_zero();
1300 static void machine_password_change_handler(struct tevent_context *ctx,
1301 struct tevent_timer *te,
1305 struct messaging_context *msg_ctx = global_messaging_context();
1306 struct winbindd_child *child =
1307 (struct winbindd_child *)private_data;
1308 struct rpc_pipe_client *netlogon_pipe = NULL;
1309 struct netlogon_creds_cli_context *netlogon_creds_ctx = NULL;
1311 struct timeval next_change;
1313 DEBUG(10,("machine_password_change_handler called\n"));
1315 TALLOC_FREE(child->machine_password_change_event);
1317 if (!calculate_next_machine_pwd_change(child->domain->name,
1319 DEBUG(10, ("calculate_next_machine_pwd_change failed\n"));
1323 DEBUG(10, ("calculate_next_machine_pwd_change returned %s\n",
1324 timeval_string(talloc_tos(), &next_change, false)));
1326 if (!timeval_expired(&next_change)) {
1327 DEBUG(10, ("Someone else has already changed the pw\n"));
1331 if (!winbindd_can_contact_domain(child->domain)) {
1332 DEBUG(10,("machine_password_change_handler: Removing myself since I "
1333 "do not have an incoming trust to domain %s\n",
1334 child->domain->name));
1338 result = cm_connect_netlogon_secure(child->domain,
1340 &netlogon_creds_ctx);
1341 if (!NT_STATUS_IS_OK(result)) {
1342 DEBUG(10,("machine_password_change_handler: "
1343 "failed to connect netlogon pipe: %s\n",
1344 nt_errstr(result)));
1348 result = trust_pw_change(netlogon_creds_ctx,
1350 netlogon_pipe->binding_handle,
1351 child->domain->name,
1352 child->domain->dcname,
1355 DEBUG(10, ("machine_password_change_handler: "
1356 "trust_pw_change returned %s\n",
1357 nt_errstr(result)));
1359 if (NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) ) {
1360 DEBUG(3,("machine_password_change_handler: password set returned "
1361 "ACCESS_DENIED. Maybe the trust account "
1362 "password was changed and we didn't know it. "
1363 "Killing connections to domain %s\n",
1364 child->domain->name));
1365 invalidate_cm_connection(child->domain);
1368 if (!calculate_next_machine_pwd_change(child->domain->name,
1370 DEBUG(10, ("calculate_next_machine_pwd_change failed\n"));
1374 DEBUG(10, ("calculate_next_machine_pwd_change returned %s\n",
1375 timeval_string(talloc_tos(), &next_change, false)));
1377 if (!NT_STATUS_IS_OK(result)) {
1380 * In case of failure, give the DC a minute to recover
1382 tmp = timeval_current_ofs(60, 0);
1383 next_change = timeval_max(&next_change, &tmp);
1387 child->machine_password_change_event = tevent_add_timer(global_event_context(), NULL,
1389 machine_password_change_handler,
1393 /* Deal with a request to go offline. */
1395 static void child_msg_offline(struct messaging_context *msg,
1398 struct server_id server_id,
1401 struct winbindd_domain *domain;
1402 struct winbindd_domain *primary_domain = NULL;
1403 const char *domainname = (const char *)data->data;
1405 if (data->data == NULL || data->length == 0) {
1409 DEBUG(5,("child_msg_offline received for domain %s.\n", domainname));
1411 if (!lp_winbind_offline_logon()) {
1412 DEBUG(10,("child_msg_offline: rejecting offline message.\n"));
1416 primary_domain = find_our_domain();
1418 /* Mark the requested domain offline. */
1420 for (domain = domain_list(); domain; domain = domain->next) {
1421 if (domain->internal) {
1424 if (strequal(domain->name, domainname)) {
1425 DEBUG(5,("child_msg_offline: marking %s offline.\n", domain->name));
1426 set_domain_offline(domain);
1427 /* we are in the trusted domain, set the primary domain
1429 if (domain != primary_domain) {
1430 set_domain_offline(primary_domain);
1436 /* Deal with a request to go online. */
1438 static void child_msg_online(struct messaging_context *msg,
1441 struct server_id server_id,
1444 struct winbindd_domain *domain;
1445 struct winbindd_domain *primary_domain = NULL;
1446 const char *domainname = (const char *)data->data;
1448 if (data->data == NULL || data->length == 0) {
1452 DEBUG(5,("child_msg_online received for domain %s.\n", domainname));
1454 if (!lp_winbind_offline_logon()) {
1455 DEBUG(10,("child_msg_online: rejecting online message.\n"));
1459 primary_domain = find_our_domain();
1461 /* Set our global state as online. */
1462 set_global_winbindd_state_online();
1464 /* Try and mark everything online - delete any negative cache entries
1465 to force a reconnect now. */
1467 for (domain = domain_list(); domain; domain = domain->next) {
1468 if (domain->internal) {
1471 if (strequal(domain->name, domainname)) {
1472 DEBUG(5,("child_msg_online: requesting %s to go online.\n", domain->name));
1473 winbindd_flush_negative_conn_cache(domain);
1474 set_domain_online_request(domain);
1476 /* we can be in trusted domain, which will contact primary domain
1477 * we have to bring primary domain online in trusted domain process
1478 * see, winbindd_dual_pam_auth() --> winbindd_dual_pam_auth_samlogon()
1479 * --> contact_domain = find_our_domain()
1481 if (domain != primary_domain) {
1482 winbindd_flush_negative_conn_cache(primary_domain);
1483 set_domain_online_request(primary_domain);
1489 struct winbindd_reinit_after_fork_state {
1490 const struct winbindd_child *myself;
1493 static bool winbindd_reinit_after_fork_fn(struct winbindd_child *child,
1496 struct winbindd_reinit_after_fork_state *state = private_data;
1498 if (child == state->myself) {
1502 /* Destroy all possible events in child list. */
1503 TALLOC_FREE(child->lockout_policy_event);
1504 TALLOC_FREE(child->machine_password_change_event);
1507 * Children should never be able to send each other messages,
1508 * all messages must go through the parent.
1510 child->pid = (pid_t)0;
1513 * Close service sockets to all other children
1515 if (child->sock != -1) {
1523 NTSTATUS winbindd_reinit_after_fork(const struct winbindd_child *myself,
1524 const char *logfilename)
1526 struct winbindd_reinit_after_fork_state state = { .myself = myself };
1527 struct winbindd_domain *domain;
1530 status = reinit_after_fork(
1531 global_messaging_context(),
1532 global_event_context(),
1534 if (!NT_STATUS_IS_OK(status)) {
1535 DEBUG(0,("reinit_after_fork() failed\n"));
1538 initialize_password_db(true, global_event_context());
1540 close_conns_after_fork();
1542 if (logfilename != NULL) {
1543 lp_set_logfile(logfilename);
1547 if (!winbindd_setup_sig_term_handler(false)) {
1548 return NT_STATUS_NO_MEMORY;
1551 if (!winbindd_setup_sig_hup_handler(logfilename)) {
1552 return NT_STATUS_NO_MEMORY;
1555 /* Stop zombies in children */
1558 /* Don't handle the same messages as our parent. */
1559 messaging_deregister(global_messaging_context(),
1560 MSG_SMB_CONF_UPDATED, NULL);
1561 messaging_deregister(global_messaging_context(),
1562 MSG_SHUTDOWN, NULL);
1563 messaging_deregister(global_messaging_context(),
1564 MSG_WINBIND_OFFLINE, NULL);
1565 messaging_deregister(global_messaging_context(),
1566 MSG_WINBIND_ONLINE, NULL);
1567 messaging_deregister(global_messaging_context(),
1568 MSG_WINBIND_ONLINESTATUS, NULL);
1569 messaging_deregister(global_messaging_context(),
1570 MSG_WINBIND_DUMP_DOMAIN_LIST, NULL);
1571 messaging_deregister(global_messaging_context(),
1574 messaging_deregister(global_messaging_context(),
1575 MSG_WINBIND_DOMAIN_OFFLINE, NULL);
1576 messaging_deregister(global_messaging_context(),
1577 MSG_WINBIND_DOMAIN_ONLINE, NULL);
1579 /* We have destroyed all events in the winbindd_event_context
1580 * in reinit_after_fork(), so clean out all possible pending
1581 * event pointers. */
1583 /* Deal with check_online_events. */
1585 for (domain = domain_list(); domain; domain = domain->next) {
1586 TALLOC_FREE(domain->check_online_event);
1589 /* Ensure we're not handling a credential cache event inherited
1590 * from our parent. */
1592 ccache_remove_all_after_fork();
1594 forall_children(winbindd_reinit_after_fork_fn, &state);
1596 return NT_STATUS_OK;
1600 * In a child there will be only one domain, reference that here.
1602 static struct winbindd_domain *child_domain;
1604 struct winbindd_domain *wb_child_domain(void)
1606 return child_domain;
1609 struct child_handler_state {
1610 struct winbindd_child *child;
1611 struct winbindd_cli_state cli;
1614 static void child_handler(struct tevent_context *ev, struct tevent_fd *fde,
1615 uint16_t flags, void *private_data)
1617 struct child_handler_state *state =
1618 (struct child_handler_state *)private_data;
1620 uint64_t parent_traceid;
1622 /* fetch a request from the main daemon */
1623 status = child_read_request(state->cli.sock, state->cli.request);
1625 if (!NT_STATUS_IS_OK(status)) {
1626 /* we lost contact with our parent */
1630 /* read traceid from request */
1631 parent_traceid = state->cli.request->traceid;
1632 debug_traceid_set(parent_traceid);
1634 DEBUG(4,("child daemon request %d\n",
1635 (int)state->cli.request->cmd));
1637 ZERO_STRUCTP(state->cli.response);
1638 state->cli.request->null_term = '\0';
1639 state->cli.mem_ctx = talloc_tos();
1640 child_process_request(state->child, &state->cli);
1642 DEBUG(4, ("Finished processing child request %d\n",
1643 (int)state->cli.request->cmd));
1645 SAFE_FREE(state->cli.request->extra_data.data);
1647 status = child_write_response(state->cli.sock, state->cli.response);
1648 if (!NT_STATUS_IS_OK(status)) {
1653 static bool fork_domain_child(struct winbindd_child *child)
1656 struct child_handler_state state;
1657 struct winbindd_request request;
1658 struct winbindd_response response;
1659 struct winbindd_domain *primary_domain = NULL;
1662 struct tevent_fd *fde;
1664 if (child->domain) {
1665 DEBUG(10, ("fork_domain_child called for domain '%s'\n",
1666 child->domain->name));
1668 DEBUG(10, ("fork_domain_child called without domain.\n"));
1671 if (socketpair(AF_UNIX, SOCK_STREAM, 0, fdpair) != 0) {
1672 DEBUG(0, ("Could not open child pipe: %s\n",
1678 state.child = child;
1679 state.cli.pid = getpid();
1680 state.cli.request = &request;
1681 state.cli.response = &response;
1683 child->pid = fork();
1685 if (child->pid == -1) {
1686 DEBUG(0, ("Could not fork: %s\n", strerror(errno)));
1692 if (child->pid != 0) {
1699 nread = sys_read(fdpair[1], &status, sizeof(status));
1700 if (nread != sizeof(status)) {
1701 DEBUG(1, ("fork_domain_child: Could not read child status: "
1702 "nread=%d, error=%s\n", (int)nread,
1707 if (!NT_STATUS_IS_OK(status)) {
1708 DEBUG(1, ("fork_domain_child: Child status is %s\n",
1709 nt_errstr(status)));
1714 child->monitor_fde = tevent_add_fd(global_event_context(),
1715 global_event_context(),
1718 child_socket_readable,
1720 if (child->monitor_fde == NULL) {
1721 DBG_WARNING("tevent_add_fd failed\n");
1726 rc = set_blocking(fdpair[1], false);
1732 child->sock = fdpair[1];
1738 child_domain = child->domain;
1740 DEBUG(10, ("Child process %d\n", (int)getpid()));
1742 state.cli.sock = fdpair[0];
1745 /* Reset traceid and deactivate call_depth tracking */
1746 if (lp_winbind_debug_traceid()) {
1747 debug_traceid_set(1);
1748 tevent_thread_call_depth_deactivate();
1751 status = winbindd_reinit_after_fork(child, child->logfilename);
1753 /* setup callbacks again, one of them is removed in reinit_after_fork */
1754 if (lp_winbind_debug_traceid()) {
1755 winbind_debug_traceid_setup(global_event_context());
1758 nwritten = sys_write(state.cli.sock, &status, sizeof(status));
1759 if (nwritten != sizeof(status)) {
1760 DEBUG(1, ("fork_domain_child: Could not write status: "
1761 "nwritten=%d, error=%s\n", (int)nwritten,
1765 if (!NT_STATUS_IS_OK(status)) {
1766 DEBUG(1, ("winbindd_reinit_after_fork failed: %s\n",
1767 nt_errstr(status)));
1771 if (child_domain != NULL) {
1772 process_set_title("wb[%s]", "domain child [%s]", child_domain->name);
1773 } else if (is_idmap_child(child)) {
1774 process_set_title("wb-idmap", "idmap child");
1777 /* Handle online/offline messages. */
1778 messaging_register(global_messaging_context(), NULL,
1779 MSG_WINBIND_OFFLINE, child_msg_offline);
1780 messaging_register(global_messaging_context(), NULL,
1781 MSG_WINBIND_ONLINE, child_msg_online);
1782 messaging_register(global_messaging_context(), NULL,
1783 MSG_DEBUG, debug_message);
1784 messaging_register(global_messaging_context(), NULL,
1785 MSG_WINBIND_IP_DROPPED,
1786 winbind_msg_ip_dropped);
1787 messaging_register(global_messaging_context(), NULL,
1788 MSG_WINBIND_DISCONNECT_DC,
1789 winbind_msg_disconnect_dc);
1791 global_messaging_context(),
1793 MSG_SMB_CONF_UPDATED,
1794 winbindd_msg_reload_services_child);
1796 primary_domain = find_our_domain();
1798 if (primary_domain == NULL) {
1799 smb_panic("no primary domain found");
1802 /* It doesn't matter if we allow cache login,
1803 * try to bring domain online after fork. */
1804 if ( child->domain ) {
1805 child->domain->startup = True;
1806 child->domain->startup_time = time_mono(NULL);
1807 /* we can be in primary domain or in trusted domain
1808 * If we are in trusted domain, set the primary domain
1809 * in start-up mode */
1810 if (!(child->domain->internal)) {
1811 set_domain_online_request(child->domain);
1812 if (!(child->domain->primary)) {
1813 primary_domain->startup = True;
1814 primary_domain->startup_time = time_mono(NULL);
1815 set_domain_online_request(primary_domain);
1821 * We are in idmap child, bring primary domain online.
1823 if (is_idmap_child(child)) {
1824 set_domain_online_request(primary_domain);
1827 /* We might be in the idmap child...*/
1828 if (child->domain && !(child->domain->internal) &&
1829 lp_winbind_offline_logon()) {
1831 set_domain_online_request(child->domain);
1833 if (primary_domain && (primary_domain != child->domain)) {
1834 /* We need to talk to the primary
1835 * domain as well as the trusted
1836 * domain inside a trusted domain
1839 * set_dc_type_and_flags_trustinfo()
1842 set_domain_online_request(primary_domain);
1845 child->lockout_policy_event = tevent_add_timer(
1846 global_event_context(), NULL, timeval_zero(),
1847 account_lockout_policy_handler,
1851 if (child->domain && child->domain->primary &&
1852 !USE_KERBEROS_KEYTAB &&
1853 lp_server_role() == ROLE_DOMAIN_MEMBER) {
1855 struct timeval next_change;
1857 if (calculate_next_machine_pwd_change(child->domain->name,
1859 child->machine_password_change_event = tevent_add_timer(
1860 global_event_context(), NULL, next_change,
1861 machine_password_change_handler,
1866 fde = tevent_add_fd(global_event_context(), NULL, state.cli.sock,
1867 TEVENT_FD_READ, child_handler, &state);
1869 DEBUG(1, ("tevent_add_fd failed\n"));
1876 TALLOC_CTX *frame = talloc_stackframe();
1878 ret = tevent_loop_once(global_event_context());
1880 DEBUG(1, ("tevent_loop_once failed: %s\n",
1885 if (child->domain && child->domain->startup &&
1886 (time_mono(NULL) > child->domain->startup_time + 30)) {
1887 /* No longer in "startup" mode. */
1888 DEBUG(10,("fork_domain_child: domain %s no longer in 'startup' mode.\n",
1889 child->domain->name ));
1890 child->domain->startup = False;
1897 void winbind_msg_ip_dropped_parent(struct messaging_context *msg_ctx,
1900 struct server_id server_id,
1903 struct winbind_msg_relay_state state = {
1905 .msg_type = msg_type,
1909 winbind_msg_ip_dropped(msg_ctx, private_data, msg_type,
1912 forall_children(winbind_msg_relay_fn, &state);
1915 void winbindd_terminate(bool is_parent)
1918 /* When parent goes away we should
1919 * remove the socket file. Not so
1920 * when children terminate.
1924 if (asprintf(&path, "%s/%s",
1925 lp_winbindd_socket_directory(), WINBINDD_SOCKET_NAME) > 0) {
1933 netlogon_creds_cli_close_global_db();
1937 TALLOC_CTX *mem_ctx = talloc_init("end_description");
1938 char *description = talloc_describe_all(mem_ctx);
1940 DEBUG(3, ("tallocs left:\n%s\n", description));
1941 talloc_destroy(mem_ctx);
1946 pidfile_unlink(lp_pid_directory(), "winbindd");
1952 static void winbindd_sig_term_handler(struct tevent_context *ev,
1953 struct tevent_signal *se,
1959 bool *p = talloc_get_type_abort(private_data, bool);
1960 bool is_parent = *p;
1964 DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
1965 signum, is_parent));
1966 winbindd_terminate(is_parent);
1969 bool winbindd_setup_sig_term_handler(bool parent)
1971 struct tevent_signal *se;
1974 is_parent = talloc(global_event_context(), bool);
1979 *is_parent = parent;
1981 se = tevent_add_signal(global_event_context(),
1984 winbindd_sig_term_handler,
1987 DEBUG(0,("failed to setup SIGTERM handler"));
1988 talloc_free(is_parent);
1992 se = tevent_add_signal(global_event_context(),
1995 winbindd_sig_term_handler,
1998 DEBUG(0,("failed to setup SIGINT handler"));
1999 talloc_free(is_parent);
2003 se = tevent_add_signal(global_event_context(),
2006 winbindd_sig_term_handler,
2009 DEBUG(0,("failed to setup SIGINT handler"));
2010 talloc_free(is_parent);
2017 static void flush_caches_noinit(void)
2020 * We need to invalidate cached user list entries on a SIGHUP
2021 * otherwise cached access denied errors due to restrict anonymous
2022 * hang around until the sequence number changes.
2024 * Skip uninitialized domains when flush cache.
2025 * If domain is not initialized, it means it is never
2026 * used or never become online. look, wcache_invalidate_cache()
2027 * -> get_cache() -> init_dc_connection(). It causes a lot of traffic
2028 * for unused domains and large traffic for primay domain's DC if there
2029 * are many domains..
2032 if (!wcache_invalidate_cache_noinit()) {
2033 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
2034 if (!winbindd_cache_validate_and_initialize()) {
2040 static void winbindd_sig_hup_handler(struct tevent_context *ev,
2041 struct tevent_signal *se,
2047 const char *file = (const char *)private_data;
2049 DEBUG(1,("Reloading services after SIGHUP\n"));
2050 flush_caches_noinit();
2051 winbindd_reload_services_file(file);
2054 bool winbindd_setup_sig_hup_handler(const char *lfile)
2056 struct tevent_signal *se;
2060 file = talloc_strdup(global_event_context(),
2067 se = tevent_add_signal(global_event_context(),
2068 global_event_context(),
2070 winbindd_sig_hup_handler,