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s3: Add winbindd_lookupsids
[Samba.git] / source3 / winbindd / winbindd.c
blobeef1490627556cfcf191f7862a45aba8b063d229
1 /*
2 Unix SMB/CIFS implementation.
3
4 Winbind daemon for ntdom nss module
5
6 Copyright (C) by Tim Potter 2000-2002
7 Copyright (C) Andrew Tridgell 2002
8 Copyright (C) Jelmer Vernooij 2003
9 Copyright (C) Volker Lendecke 2004
10
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 */
24
25 #include "includes.h"
26 #include "popt_common.h"
27 #include "winbindd.h"
28 #include "nsswitch/winbind_client.h"
29 #include "nsswitch/wb_reqtrans.h"
30 #include "../librpc/gen_ndr/srv_lsa.h"
31 #include "../librpc/gen_ndr/srv_samr.h"
32 #include "secrets.h"
33 #include "idmap.h"
34 #include "lib/addrchange.h"
35 #include "serverid.h"
36 #include "auth.h"
37 #include "messages.h"
38
39 #undef DBGC_CLASS
40 #define DBGC_CLASS DBGC_WINBIND
41
42 static bool client_is_idle(struct winbindd_cli_state *state);
43 static void remove_client(struct winbindd_cli_state *state);
44
45 static bool opt_nocache = False;
46 static bool interactive = False;
47
48 extern bool override_logfile;
49
50 struct messaging_context *winbind_messaging_context(void)
51 {
52 struct messaging_context *msg_ctx = server_messaging_context();
53 if (likely(msg_ctx != NULL)) {
54 return msg_ctx;
55 }
56 smb_panic("Could not init winbindd's messaging context.\n");
57 return NULL;
58 }
59
60 /* Reload configuration */
61
62 static bool reload_services_file(const char *lfile)
63 {
64 bool ret;
65
66 if (lp_loaded()) {
67 const char *fname = lp_configfile();
68
69 if (file_exist(fname) && !strcsequal(fname,get_dyn_CONFIGFILE())) {
70 set_dyn_CONFIGFILE(fname);
71 }
72 }
73
74 /* if this is a child, restore the logfile to the special
75 name - <domain>, idmap, etc. */
76 if (lfile && *lfile) {
77 lp_set_logfile(lfile);
78 }
79
80 reopen_logs();
81 ret = lp_load(get_dyn_CONFIGFILE(),False,False,True,True);
82
83 reopen_logs();
84 load_interfaces();
85
86 return(ret);
87 }
88
89
90 /**************************************************************************** **
91 Handle a fault..
92 **************************************************************************** */
93
94 static void fault_quit(void)
95 {
96 dump_core();
97 }
98
99 static void winbindd_status(void)
100 {
101 struct winbindd_cli_state *tmp;
102
103 DEBUG(0, ("winbindd status:\n"));
104
105 /* Print client state information */
106
107 DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
108
109 if (DEBUGLEVEL >= 2 && winbindd_num_clients()) {
110 DEBUG(2, ("\tclient list:\n"));
111 for(tmp = winbindd_client_list(); tmp; tmp = tmp->next) {
112 DEBUGADD(2, ("\t\tpid %lu, sock %d (%s)\n",
113 (unsigned long)tmp->pid, tmp->sock,
114 client_is_idle(tmp) ? "idle" : "active"));
115 }
116 }
117 }
118
119 /* Flush client cache */
120
121 static void flush_caches(void)
122 {
123 /* We need to invalidate cached user list entries on a SIGHUP
124 otherwise cached access denied errors due to restrict anonymous
125 hang around until the sequence number changes. */
126
127 if (!wcache_invalidate_cache()) {
128 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
129 if (!winbindd_cache_validate_and_initialize()) {
130 exit(1);
131 }
132 }
133 }
134
135 static void flush_caches_noinit(void)
136 {
137 /*
138 * We need to invalidate cached user list entries on a SIGHUP
139 * otherwise cached access denied errors due to restrict anonymous
140 * hang around until the sequence number changes.
141 * NB
142 * Skip uninitialized domains when flush cache.
143 * If domain is not initialized, it means it is never
144 * used or never become online. look, wcache_invalidate_cache()
145 * -> get_cache() -> init_dc_connection(). It causes a lot of traffic
146 * for unused domains and large traffic for primay domain's DC if there
147 * are many domains..
148 */
149
150 if (!wcache_invalidate_cache_noinit()) {
151 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
152 if (!winbindd_cache_validate_and_initialize()) {
153 exit(1);
154 }
155 }
156 }
157
158 /* Handle the signal by unlinking socket and exiting */
159
160 static void terminate(bool is_parent)
161 {
162 if (is_parent) {
163 /* When parent goes away we should
164 * remove the socket file. Not so
165 * when children terminate.
166 */
167 char *path = NULL;
168
169 if (asprintf(&path, "%s/%s",
170 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME) > 0) {
171 unlink(path);
172 SAFE_FREE(path);
173 }
174 }
175
176 idmap_close();
177
178 trustdom_cache_shutdown();
179
180 gencache_stabilize();
181
182 #if 0
183 if (interactive) {
184 TALLOC_CTX *mem_ctx = talloc_init("end_description");
185 char *description = talloc_describe_all(mem_ctx);
186
187 DEBUG(3, ("tallocs left:\n%s\n", description));
188 talloc_destroy(mem_ctx);
189 }
190 #endif
191
192 if (is_parent) {
193 serverid_deregister(procid_self());
194 pidfile_unlink();
195 }
196
197 exit(0);
198 }
199
200 static void winbindd_sig_term_handler(struct tevent_context *ev,
201 struct tevent_signal *se,
202 int signum,
203 int count,
204 void *siginfo,
205 void *private_data)
206 {
207 bool *is_parent = talloc_get_type_abort(private_data, bool);
208
209 DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
210 signum, (int)*is_parent));
211 terminate(*is_parent);
212 }
213
214 bool winbindd_setup_sig_term_handler(bool parent)
215 {
216 struct tevent_signal *se;
217 bool *is_parent;
218
219 is_parent = talloc(winbind_event_context(), bool);
220 if (!is_parent) {
221 return false;
222 }
223
224 *is_parent = parent;
225
226 se = tevent_add_signal(winbind_event_context(),
227 is_parent,
228 SIGTERM, 0,
229 winbindd_sig_term_handler,
230 is_parent);
231 if (!se) {
232 DEBUG(0,("failed to setup SIGTERM handler"));
233 talloc_free(is_parent);
234 return false;
235 }
236
237 se = tevent_add_signal(winbind_event_context(),
238 is_parent,
239 SIGINT, 0,
240 winbindd_sig_term_handler,
241 is_parent);
242 if (!se) {
243 DEBUG(0,("failed to setup SIGINT handler"));
244 talloc_free(is_parent);
245 return false;
246 }
247
248 se = tevent_add_signal(winbind_event_context(),
249 is_parent,
250 SIGQUIT, 0,
251 winbindd_sig_term_handler,
252 is_parent);
253 if (!se) {
254 DEBUG(0,("failed to setup SIGINT handler"));
255 talloc_free(is_parent);
256 return false;
257 }
258
259 return true;
260 }
261
262 static void winbindd_sig_hup_handler(struct tevent_context *ev,
263 struct tevent_signal *se,
264 int signum,
265 int count,
266 void *siginfo,
267 void *private_data)
268 {
269 const char *file = (const char *)private_data;
270
271 DEBUG(1,("Reloading services after SIGHUP\n"));
272 flush_caches_noinit();
273 reload_services_file(file);
274 }
275
276 bool winbindd_setup_sig_hup_handler(const char *lfile)
277 {
278 struct tevent_signal *se;
279 char *file = NULL;
280
281 if (lfile) {
282 file = talloc_strdup(winbind_event_context(),
283 lfile);
284 if (!file) {
285 return false;
286 }
287 }
288
289 se = tevent_add_signal(winbind_event_context(),
290 winbind_event_context(),
291 SIGHUP, 0,
292 winbindd_sig_hup_handler,
293 file);
294 if (!se) {
295 return false;
296 }
297
298 return true;
299 }
300
301 static void winbindd_sig_chld_handler(struct tevent_context *ev,
302 struct tevent_signal *se,
303 int signum,
304 int count,
305 void *siginfo,
306 void *private_data)
307 {
308 pid_t pid;
309
310 while ((pid = sys_waitpid(-1, NULL, WNOHANG)) > 0) {
311 winbind_child_died(pid);
312 }
313 }
314
315 static bool winbindd_setup_sig_chld_handler(void)
316 {
317 struct tevent_signal *se;
318
319 se = tevent_add_signal(winbind_event_context(),
320 winbind_event_context(),
321 SIGCHLD, 0,
322 winbindd_sig_chld_handler,
323 NULL);
324 if (!se) {
325 return false;
326 }
327
328 return true;
329 }
330
331 static void winbindd_sig_usr2_handler(struct tevent_context *ev,
332 struct tevent_signal *se,
333 int signum,
334 int count,
335 void *siginfo,
336 void *private_data)
337 {
338 winbindd_status();
339 }
340
341 static bool winbindd_setup_sig_usr2_handler(void)
342 {
343 struct tevent_signal *se;
344
345 se = tevent_add_signal(winbind_event_context(),
346 winbind_event_context(),
347 SIGUSR2, 0,
348 winbindd_sig_usr2_handler,
349 NULL);
350 if (!se) {
351 return false;
352 }
353
354 return true;
355 }
356
357 /* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
358 static void msg_reload_services(struct messaging_context *msg,
359 void *private_data,
360 uint32_t msg_type,
361 struct server_id server_id,
362 DATA_BLOB *data)
363 {
364 /* Flush various caches */
365 flush_caches();
366 reload_services_file((const char *) private_data);
367 }
368
369 /* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
370 static void msg_shutdown(struct messaging_context *msg,
371 void *private_data,
372 uint32_t msg_type,
373 struct server_id server_id,
374 DATA_BLOB *data)
375 {
376 /* only the parent waits for this message */
377 DEBUG(0,("Got shutdown message\n"));
378 terminate(true);
379 }
380
381
382 static void winbind_msg_validate_cache(struct messaging_context *msg_ctx,
383 void *private_data,
384 uint32_t msg_type,
385 struct server_id server_id,
386 DATA_BLOB *data)
387 {
388 uint8 ret;
389 pid_t child_pid;
390
391 DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
392 "message.\n"));
393
394 /*
395 * call the validation code from a child:
396 * so we don't block the main winbindd and the validation
397 * code can safely use fork/waitpid...
398 */
399 child_pid = sys_fork();
400
401 if (child_pid == -1) {
402 DEBUG(1, ("winbind_msg_validate_cache: Could not fork: %s\n",
403 strerror(errno)));
404 return;
405 }
406
407 if (child_pid != 0) {
408 /* parent */
409 DEBUG(5, ("winbind_msg_validate_cache: child created with "
410 "pid %d.\n", (int)child_pid));
411 return;
412 }
413
414 /* child */
415
416 if (!winbindd_reinit_after_fork(NULL)) {
417 _exit(0);
418 }
419
420 /* install default SIGCHLD handler: validation code uses fork/waitpid */
421 CatchSignal(SIGCHLD, SIG_DFL);
422
423 ret = (uint8)winbindd_validate_cache_nobackup();
424 DEBUG(10, ("winbindd_msg_validata_cache: got return value %d\n", ret));
425 messaging_send_buf(msg_ctx, server_id, MSG_WINBIND_VALIDATE_CACHE, &ret,
426 (size_t)1);
427 _exit(0);
428 }
429
430 static struct winbindd_dispatch_table {
431 enum winbindd_cmd cmd;
432 void (*fn)(struct winbindd_cli_state *state);
433 const char *winbindd_cmd_name;
434 } dispatch_table[] = {
435
436 /* Enumeration functions */
437
438 { WINBINDD_LIST_TRUSTDOM, winbindd_list_trusted_domains,
439 "LIST_TRUSTDOM" },
440
441 /* Miscellaneous */
442
443 { WINBINDD_INFO, winbindd_info, "INFO" },
444 { WINBINDD_INTERFACE_VERSION, winbindd_interface_version,
445 "INTERFACE_VERSION" },
446 { WINBINDD_DOMAIN_NAME, winbindd_domain_name, "DOMAIN_NAME" },
447 { WINBINDD_DOMAIN_INFO, winbindd_domain_info, "DOMAIN_INFO" },
448 { WINBINDD_DC_INFO, winbindd_dc_info, "DC_INFO" },
449 { WINBINDD_NETBIOS_NAME, winbindd_netbios_name, "NETBIOS_NAME" },
450 { WINBINDD_PRIV_PIPE_DIR, winbindd_priv_pipe_dir,
451 "WINBINDD_PRIV_PIPE_DIR" },
452
453 /* Credential cache access */
454 { WINBINDD_CCACHE_NTLMAUTH, winbindd_ccache_ntlm_auth, "NTLMAUTH" },
455 { WINBINDD_CCACHE_SAVE, winbindd_ccache_save, "CCACHE_SAVE" },
456
457 /* WINS functions */
458
459 { WINBINDD_WINS_BYNAME, winbindd_wins_byname, "WINS_BYNAME" },
460 { WINBINDD_WINS_BYIP, winbindd_wins_byip, "WINS_BYIP" },
461
462 /* End of list */
463
464 { WINBINDD_NUM_CMDS, NULL, "NONE" }
465 };
466
467 struct winbindd_async_dispatch_table {
468 enum winbindd_cmd cmd;
469 const char *cmd_name;
470 struct tevent_req *(*send_req)(TALLOC_CTX *mem_ctx,
471 struct tevent_context *ev,
472 struct winbindd_cli_state *cli,
473 struct winbindd_request *request);
474 NTSTATUS (*recv_req)(struct tevent_req *req,
475 struct winbindd_response *presp);
476 };
477
478 static struct winbindd_async_dispatch_table async_nonpriv_table[] = {
479 { WINBINDD_PING, "PING",
480 wb_ping_send, wb_ping_recv },
481 { WINBINDD_LOOKUPSID, "LOOKUPSID",
482 winbindd_lookupsid_send, winbindd_lookupsid_recv },
483 { WINBINDD_LOOKUPSIDS, "LOOKUPSIDS",
484 winbindd_lookupsids_send, winbindd_lookupsids_recv },
485 { WINBINDD_LOOKUPNAME, "LOOKUPNAME",
486 winbindd_lookupname_send, winbindd_lookupname_recv },
487 { WINBINDD_SID_TO_UID, "SID_TO_UID",
488 winbindd_sid_to_uid_send, winbindd_sid_to_uid_recv },
489 { WINBINDD_SID_TO_GID, "SID_TO_GID",
490 winbindd_sid_to_gid_send, winbindd_sid_to_gid_recv },
491 { WINBINDD_UID_TO_SID, "UID_TO_SID",
492 winbindd_uid_to_sid_send, winbindd_uid_to_sid_recv },
493 { WINBINDD_GID_TO_SID, "GID_TO_SID",
494 winbindd_gid_to_sid_send, winbindd_gid_to_sid_recv },
495 { WINBINDD_GETPWSID, "GETPWSID",
496 winbindd_getpwsid_send, winbindd_getpwsid_recv },
497 { WINBINDD_GETPWNAM, "GETPWNAM",
498 winbindd_getpwnam_send, winbindd_getpwnam_recv },
499 { WINBINDD_GETPWUID, "GETPWUID",
500 winbindd_getpwuid_send, winbindd_getpwuid_recv },
501 { WINBINDD_GETSIDALIASES, "GETSIDALIASES",
502 winbindd_getsidaliases_send, winbindd_getsidaliases_recv },
503 { WINBINDD_GETUSERDOMGROUPS, "GETUSERDOMGROUPS",
504 winbindd_getuserdomgroups_send, winbindd_getuserdomgroups_recv },
505 { WINBINDD_GETGROUPS, "GETGROUPS",
506 winbindd_getgroups_send, winbindd_getgroups_recv },
507 { WINBINDD_SHOW_SEQUENCE, "SHOW_SEQUENCE",
508 winbindd_show_sequence_send, winbindd_show_sequence_recv },
509 { WINBINDD_GETGRGID, "GETGRGID",
510 winbindd_getgrgid_send, winbindd_getgrgid_recv },
511 { WINBINDD_GETGRNAM, "GETGRNAM",
512 winbindd_getgrnam_send, winbindd_getgrnam_recv },
513 { WINBINDD_GETUSERSIDS, "GETUSERSIDS",
514 winbindd_getusersids_send, winbindd_getusersids_recv },
515 { WINBINDD_LOOKUPRIDS, "LOOKUPRIDS",
516 winbindd_lookuprids_send, winbindd_lookuprids_recv },
517 { WINBINDD_SETPWENT, "SETPWENT",
518 winbindd_setpwent_send, winbindd_setpwent_recv },
519 { WINBINDD_GETPWENT, "GETPWENT",
520 winbindd_getpwent_send, winbindd_getpwent_recv },
521 { WINBINDD_ENDPWENT, "ENDPWENT",
522 winbindd_endpwent_send, winbindd_endpwent_recv },
523 { WINBINDD_DSGETDCNAME, "DSGETDCNAME",
524 winbindd_dsgetdcname_send, winbindd_dsgetdcname_recv },
525 { WINBINDD_GETDCNAME, "GETDCNAME",
526 winbindd_getdcname_send, winbindd_getdcname_recv },
527 { WINBINDD_SETGRENT, "SETGRENT",
528 winbindd_setgrent_send, winbindd_setgrent_recv },
529 { WINBINDD_GETGRENT, "GETGRENT",
530 winbindd_getgrent_send, winbindd_getgrent_recv },
531 { WINBINDD_ENDGRENT, "ENDGRENT",
532 winbindd_endgrent_send, winbindd_endgrent_recv },
533 { WINBINDD_LIST_USERS, "LIST_USERS",
534 winbindd_list_users_send, winbindd_list_users_recv },
535 { WINBINDD_LIST_GROUPS, "LIST_GROUPS",
536 winbindd_list_groups_send, winbindd_list_groups_recv },
537 { WINBINDD_CHECK_MACHACC, "CHECK_MACHACC",
538 winbindd_check_machine_acct_send, winbindd_check_machine_acct_recv },
539 { WINBINDD_PING_DC, "PING_DC",
540 winbindd_ping_dc_send, winbindd_ping_dc_recv },
541 { WINBINDD_PAM_AUTH, "PAM_AUTH",
542 winbindd_pam_auth_send, winbindd_pam_auth_recv },
543 { WINBINDD_PAM_LOGOFF, "PAM_LOGOFF",
544 winbindd_pam_logoff_send, winbindd_pam_logoff_recv },
545 { WINBINDD_PAM_CHAUTHTOK, "PAM_CHAUTHTOK",
546 winbindd_pam_chauthtok_send, winbindd_pam_chauthtok_recv },
547 { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, "PAM_CHNG_PSWD_AUTH_CRAP",
548 winbindd_pam_chng_pswd_auth_crap_send,
549 winbindd_pam_chng_pswd_auth_crap_recv },
550
551 { 0, NULL, NULL, NULL }
552 };
553
554 static struct winbindd_async_dispatch_table async_priv_table[] = {
555 { WINBINDD_ALLOCATE_UID, "ALLOCATE_UID",
556 winbindd_allocate_uid_send, winbindd_allocate_uid_recv },
557 { WINBINDD_ALLOCATE_GID, "ALLOCATE_GID",
558 winbindd_allocate_gid_send, winbindd_allocate_gid_recv },
559 { WINBINDD_CHANGE_MACHACC, "CHANGE_MACHACC",
560 winbindd_change_machine_acct_send, winbindd_change_machine_acct_recv },
561 { WINBINDD_PAM_AUTH_CRAP, "PAM_AUTH_CRAP",
562 winbindd_pam_auth_crap_send, winbindd_pam_auth_crap_recv },
563
564 { 0, NULL, NULL, NULL }
565 };
566
567 static void wb_request_done(struct tevent_req *req);
568
569 static void process_request(struct winbindd_cli_state *state)
570 {
571 struct winbindd_dispatch_table *table = dispatch_table;
572 struct winbindd_async_dispatch_table *atable;
573
574 state->mem_ctx = talloc_named(state, 0, "winbind request");
575 if (state->mem_ctx == NULL)
576 return;
577
578 /* Remember who asked us. */
579 state->pid = state->request->pid;
580
581 state->cmd_name = "unknown request";
582 state->recv_fn = NULL;
583
584 /* Process command */
585
586 for (atable = async_nonpriv_table; atable->send_req; atable += 1) {
587 if (state->request->cmd == atable->cmd) {
588 break;
589 }
590 }
591
592 if ((atable->send_req == NULL) && state->privileged) {
593 for (atable = async_priv_table; atable->send_req;
594 atable += 1) {
595 if (state->request->cmd == atable->cmd) {
596 break;
597 }
598 }
599 }
600
601 if (atable->send_req != NULL) {
602 struct tevent_req *req;
603
604 state->cmd_name = atable->cmd_name;
605 state->recv_fn = atable->recv_req;
606
607 DEBUG(10, ("process_request: Handling async request %d:%s\n",
608 (int)state->pid, state->cmd_name));
609
610 req = atable->send_req(state->mem_ctx, winbind_event_context(),
611 state, state->request);
612 if (req == NULL) {
613 DEBUG(0, ("process_request: atable->send failed for "
614 "%s\n", atable->cmd_name));
615 request_error(state);
616 return;
617 }
618 tevent_req_set_callback(req, wb_request_done, state);
619 return;
620 }
621
622 state->response = talloc_zero(state->mem_ctx,
623 struct winbindd_response);
624 if (state->response == NULL) {
625 DEBUG(10, ("talloc failed\n"));
626 remove_client(state);
627 return;
628 }
629 state->response->result = WINBINDD_PENDING;
630 state->response->length = sizeof(struct winbindd_response);
631
632 for (table = dispatch_table; table->fn; table++) {
633 if (state->request->cmd == table->cmd) {
634 DEBUG(10,("process_request: request fn %s\n",
635 table->winbindd_cmd_name ));
636 state->cmd_name = table->winbindd_cmd_name;
637 table->fn(state);
638 break;
639 }
640 }
641
642 if (!table->fn) {
643 DEBUG(10,("process_request: unknown request fn number %d\n",
644 (int)state->request->cmd ));
645 request_error(state);
646 }
647 }
648
649 static void wb_request_done(struct tevent_req *req)
650 {
651 struct winbindd_cli_state *state = tevent_req_callback_data(
652 req, struct winbindd_cli_state);
653 NTSTATUS status;
654
655 state->response = talloc_zero(state->mem_ctx,
656 struct winbindd_response);
657 if (state->response == NULL) {
658 DEBUG(0, ("wb_request_done[%d:%s]: talloc_zero failed - removing client\n",
659 (int)state->pid, state->cmd_name));
660 remove_client(state);
661 return;
662 }
663 state->response->result = WINBINDD_PENDING;
664 state->response->length = sizeof(struct winbindd_response);
665
666 status = state->recv_fn(req, state->response);
667 TALLOC_FREE(req);
668
669 DEBUG(10,("wb_request_done[%d:%s]: %s\n",
670 (int)state->pid, state->cmd_name, nt_errstr(status)));
671
672 if (!NT_STATUS_IS_OK(status)) {
673 request_error(state);
674 return;
675 }
676 request_ok(state);
677 }
678
679 /*
680 * This is the main event loop of winbind requests. It goes through a
681 * state-machine of 3 read/write requests, 4 if you have extra data to send.
682 *
683 * An idle winbind client has a read request of 4 bytes outstanding,
684 * finalizing function is request_len_recv, checking the length. request_recv
685 * then processes the packet. The processing function then at some point has
686 * to call request_finished which schedules sending the response.
687 */
688
689 static void request_finished(struct winbindd_cli_state *state);
690
691 static void winbind_client_request_read(struct tevent_req *req);
692 static void winbind_client_response_written(struct tevent_req *req);
693
694 static void request_finished(struct winbindd_cli_state *state)
695 {
696 struct tevent_req *req;
697
698 TALLOC_FREE(state->request);
699
700 req = wb_resp_write_send(state, winbind_event_context(),
701 state->out_queue, state->sock,
702 state->response);
703 if (req == NULL) {
704 DEBUG(10,("request_finished[%d:%s]: wb_resp_write_send() failed\n",
705 (int)state->pid, state->cmd_name));
706 remove_client(state);
707 return;
708 }
709 tevent_req_set_callback(req, winbind_client_response_written, state);
710 }
711
712 static void winbind_client_response_written(struct tevent_req *req)
713 {
714 struct winbindd_cli_state *state = tevent_req_callback_data(
715 req, struct winbindd_cli_state);
716 ssize_t ret;
717 int err;
718
719 ret = wb_resp_write_recv(req, &err);
720 TALLOC_FREE(req);
721 if (ret == -1) {
722 close(state->sock);
723 state->sock = -1;
724 DEBUG(2, ("Could not write response[%d:%s] to client: %s\n",
725 (int)state->pid, state->cmd_name, strerror(err)));
726 remove_client(state);
727 return;
728 }
729
730 DEBUG(10,("winbind_client_response_written[%d:%s]: delivered response "
731 "to client\n", (int)state->pid, state->cmd_name));
732
733 TALLOC_FREE(state->mem_ctx);
734 state->response = NULL;
735 state->cmd_name = "no request";
736 state->recv_fn = NULL;
737
738 req = wb_req_read_send(state, winbind_event_context(), state->sock,
739 WINBINDD_MAX_EXTRA_DATA);
740 if (req == NULL) {
741 remove_client(state);
742 return;
743 }
744 tevent_req_set_callback(req, winbind_client_request_read, state);
745 }
746
747 void request_error(struct winbindd_cli_state *state)
748 {
749 SMB_ASSERT(state->response->result == WINBINDD_PENDING);
750 state->response->result = WINBINDD_ERROR;
751 request_finished(state);
752 }
753
754 void request_ok(struct winbindd_cli_state *state)
755 {
756 SMB_ASSERT(state->response->result == WINBINDD_PENDING);
757 state->response->result = WINBINDD_OK;
758 request_finished(state);
759 }
760
761 /* Process a new connection by adding it to the client connection list */
762
763 static void new_connection(int listen_sock, bool privileged)
764 {
765 struct sockaddr_un sunaddr;
766 struct winbindd_cli_state *state;
767 struct tevent_req *req;
768 socklen_t len;
769 int sock;
770
771 /* Accept connection */
772
773 len = sizeof(sunaddr);
774
775 sock = accept(listen_sock, (struct sockaddr *)(void *)&sunaddr, &len);
776
777 if (sock == -1) {
778 if (errno != EINTR) {
779 DEBUG(0, ("Faild to accept socket - %s\n",
780 strerror(errno)));
781 }
782 return;
783 }
784
785 DEBUG(6,("accepted socket %d\n", sock));
786
787 /* Create new connection structure */
788
789 if ((state = TALLOC_ZERO_P(NULL, struct winbindd_cli_state)) == NULL) {
790 close(sock);
791 return;
792 }
793
794 state->sock = sock;
795
796 state->out_queue = tevent_queue_create(state, "winbind client reply");
797 if (state->out_queue == NULL) {
798 close(sock);
799 TALLOC_FREE(state);
800 return;
801 }
802
803 state->last_access = time(NULL);
804
805 state->privileged = privileged;
806
807 req = wb_req_read_send(state, winbind_event_context(), state->sock,
808 WINBINDD_MAX_EXTRA_DATA);
809 if (req == NULL) {
810 TALLOC_FREE(state);
811 close(sock);
812 return;
813 }
814 tevent_req_set_callback(req, winbind_client_request_read, state);
815
816 /* Add to connection list */
817
818 winbindd_add_client(state);
819 }
820
821 static void winbind_client_request_read(struct tevent_req *req)
822 {
823 struct winbindd_cli_state *state = tevent_req_callback_data(
824 req, struct winbindd_cli_state);
825 ssize_t ret;
826 int err;
827
828 ret = wb_req_read_recv(req, state, &state->request, &err);
829 TALLOC_FREE(req);
830 if (ret == -1) {
831 if (err == EPIPE) {
832 DEBUG(6, ("closing socket %d, client exited\n",
833 state->sock));
834 } else {
835 DEBUG(2, ("Could not read client request from fd %d: "
836 "%s\n", state->sock, strerror(err)));
837 }
838 close(state->sock);
839 state->sock = -1;
840 remove_client(state);
841 return;
842 }
843 process_request(state);
844 }
845
846 /* Remove a client connection from client connection list */
847
848 static void remove_client(struct winbindd_cli_state *state)
849 {
850 char c = 0;
851 int nwritten;
852
853 /* It's a dead client - hold a funeral */
854
855 if (state == NULL) {
856 return;
857 }
858
859 if (state->sock != -1) {
860 /* tell client, we are closing ... */
861 nwritten = write(state->sock, &c, sizeof(c));
862 if (nwritten == -1) {
863 DEBUG(2, ("final write to client failed: %s\n",
864 strerror(errno)));
865 }
866
867 /* Close socket */
868
869 close(state->sock);
870 state->sock = -1;
871 }
872
873 TALLOC_FREE(state->mem_ctx);
874
875 /* Remove from list and free */
876
877 winbindd_remove_client(state);
878 TALLOC_FREE(state);
879 }
880
881 /* Is a client idle? */
882
883 static bool client_is_idle(struct winbindd_cli_state *state) {
884 return (state->response == NULL &&
885 !state->pwent_state && !state->grent_state);
886 }
887
888 /* Shutdown client connection which has been idle for the longest time */
889
890 static bool remove_idle_client(void)
891 {
892 struct winbindd_cli_state *state, *remove_state = NULL;
893 time_t last_access = 0;
894 int nidle = 0;
895
896 for (state = winbindd_client_list(); state; state = state->next) {
897 if (client_is_idle(state)) {
898 nidle++;
899 if (!last_access || state->last_access < last_access) {
900 last_access = state->last_access;
901 remove_state = state;
902 }
903 }
904 }
905
906 if (remove_state) {
907 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
908 nidle, remove_state->sock, (unsigned int)remove_state->pid));
909 remove_client(remove_state);
910 return True;
911 }
912
913 return False;
914 }
915
916 struct winbindd_listen_state {
917 bool privileged;
918 int fd;
919 };
920
921 static void winbindd_listen_fde_handler(struct tevent_context *ev,
922 struct tevent_fd *fde,
923 uint16_t flags,
924 void *private_data)
925 {
926 struct winbindd_listen_state *s = talloc_get_type_abort(private_data,
927 struct winbindd_listen_state);
928
929 while (winbindd_num_clients() > lp_winbind_max_clients() - 1) {
930 DEBUG(5,("winbindd: Exceeding %d client "
931 "connections, removing idle "
932 "connection.\n", lp_winbind_max_clients()));
933 if (!remove_idle_client()) {
934 DEBUG(0,("winbindd: Exceeding %d "
935 "client connections, no idle "
936 "connection found\n",
937 lp_winbind_max_clients()));
938 break;
939 }
940 }
941 new_connection(s->fd, s->privileged);
942 }
943
944 /*
945 * Winbindd socket accessor functions
946 */
947
948 const char *get_winbind_pipe_dir(void)
949 {
950 return lp_parm_const_string(-1, "winbindd", "socket dir", WINBINDD_SOCKET_DIR);
951 }
952
953 char *get_winbind_priv_pipe_dir(void)
954 {
955 return lock_path(WINBINDD_PRIV_SOCKET_SUBDIR);
956 }
957
958 static bool winbindd_setup_listeners(void)
959 {
960 struct winbindd_listen_state *pub_state = NULL;
961 struct winbindd_listen_state *priv_state = NULL;
962 struct tevent_fd *fde;
963
964 pub_state = talloc(winbind_event_context(),
965 struct winbindd_listen_state);
966 if (!pub_state) {
967 goto failed;
968 }
969
970 pub_state->privileged = false;
971 pub_state->fd = create_pipe_sock(
972 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME, 0755);
973 if (pub_state->fd == -1) {
974 goto failed;
975 }
976
977 fde = tevent_add_fd(winbind_event_context(), pub_state, pub_state->fd,
978 TEVENT_FD_READ, winbindd_listen_fde_handler,
979 pub_state);
980 if (fde == NULL) {
981 close(pub_state->fd);
982 goto failed;
983 }
984 tevent_fd_set_auto_close(fde);
985
986 priv_state = talloc(winbind_event_context(),
987 struct winbindd_listen_state);
988 if (!priv_state) {
989 goto failed;
990 }
991
992 priv_state->privileged = true;
993 priv_state->fd = create_pipe_sock(
994 get_winbind_priv_pipe_dir(), WINBINDD_SOCKET_NAME, 0750);
995 if (priv_state->fd == -1) {
996 goto failed;
997 }
998
999 fde = tevent_add_fd(winbind_event_context(), priv_state,
1000 priv_state->fd, TEVENT_FD_READ,
1001 winbindd_listen_fde_handler, priv_state);
1002 if (fde == NULL) {
1003 close(priv_state->fd);
1004 goto failed;
1005 }
1006 tevent_fd_set_auto_close(fde);
1007
1008 return true;
1009 failed:
1010 TALLOC_FREE(pub_state);
1011 TALLOC_FREE(priv_state);
1012 return false;
1013 }
1014
1015 bool winbindd_use_idmap_cache(void)
1016 {
1017 return !opt_nocache;
1018 }
1019
1020 bool winbindd_use_cache(void)
1021 {
1022 return !opt_nocache;
1023 }
1024
1025 void winbindd_register_handlers(void)
1026 {
1027 /* Setup signal handlers */
1028
1029 if (!winbindd_setup_sig_term_handler(true))
1030 exit(1);
1031 if (!winbindd_setup_sig_hup_handler(NULL))
1032 exit(1);
1033 if (!winbindd_setup_sig_chld_handler())
1034 exit(1);
1035 if (!winbindd_setup_sig_usr2_handler())
1036 exit(1);
1037
1038 CatchSignal(SIGPIPE, SIG_IGN); /* Ignore sigpipe */
1039
1040 /*
1041 * Ensure all cache and idmap caches are consistent
1042 * and initialized before we startup.
1043 */
1044 if (!winbindd_cache_validate_and_initialize()) {
1045 exit(1);
1046 }
1047
1048 /* get broadcast messages */
1049
1050 if (!serverid_register(procid_self(),
1051 FLAG_MSG_GENERAL|FLAG_MSG_DBWRAP)) {
1052 DEBUG(1, ("Could not register myself in serverid.tdb\n"));
1053 exit(1);
1054 }
1055
1056 /* React on 'smbcontrol winbindd reload-config' in the same way
1057 as to SIGHUP signal */
1058 messaging_register(winbind_messaging_context(), NULL,
1059 MSG_SMB_CONF_UPDATED, msg_reload_services);
1060 messaging_register(winbind_messaging_context(), NULL,
1061 MSG_SHUTDOWN, msg_shutdown);
1062
1063 /* Handle online/offline messages. */
1064 messaging_register(winbind_messaging_context(), NULL,
1065 MSG_WINBIND_OFFLINE, winbind_msg_offline);
1066 messaging_register(winbind_messaging_context(), NULL,
1067 MSG_WINBIND_ONLINE, winbind_msg_online);
1068 messaging_register(winbind_messaging_context(), NULL,
1069 MSG_WINBIND_ONLINESTATUS, winbind_msg_onlinestatus);
1070
1071 messaging_register(winbind_messaging_context(), NULL,
1072 MSG_DUMP_EVENT_LIST, winbind_msg_dump_event_list);
1073
1074 messaging_register(winbind_messaging_context(), NULL,
1075 MSG_WINBIND_VALIDATE_CACHE,
1076 winbind_msg_validate_cache);
1077
1078 messaging_register(winbind_messaging_context(), NULL,
1079 MSG_WINBIND_DUMP_DOMAIN_LIST,
1080 winbind_msg_dump_domain_list);
1081
1082 messaging_register(winbind_messaging_context(), NULL,
1083 MSG_WINBIND_IP_DROPPED,
1084 winbind_msg_ip_dropped_parent);
1085
1086 /* Register handler for MSG_DEBUG. */
1087 messaging_register(winbind_messaging_context(), NULL,
1088 MSG_DEBUG,
1089 winbind_msg_debug);
1090
1091 netsamlogon_cache_init(); /* Non-critical */
1092
1093 /* clear the cached list of trusted domains */
1094
1095 wcache_tdc_clear();
1096
1097 if (!init_domain_list()) {
1098 DEBUG(0,("unable to initialize domain list\n"));
1099 exit(1);
1100 }
1101
1102 init_idmap_child();
1103 init_locator_child();
1104
1105 smb_nscd_flush_user_cache();
1106 smb_nscd_flush_group_cache();
1107
1108 if (lp_allow_trusted_domains()) {
1109 if (tevent_add_timer(winbind_event_context(), NULL, timeval_zero(),
1110 rescan_trusted_domains, NULL) == NULL) {
1111 DEBUG(0, ("Could not trigger rescan_trusted_domains()\n"));
1112 exit(1);
1113 }
1114 }
1115
1116 }
1117
1118 struct winbindd_addrchanged_state {
1119 struct addrchange_context *ctx;
1120 struct tevent_context *ev;
1121 struct messaging_context *msg_ctx;
1122 };
1123
1124 static void winbindd_addr_changed(struct tevent_req *req);
1125
1126 static void winbindd_init_addrchange(TALLOC_CTX *mem_ctx,
1127 struct tevent_context *ev,
1128 struct messaging_context *msg_ctx)
1129 {
1130 struct winbindd_addrchanged_state *state;
1131 struct tevent_req *req;
1132 NTSTATUS status;
1133
1134 state = talloc(mem_ctx, struct winbindd_addrchanged_state);
1135 if (state == NULL) {
1136 DEBUG(10, ("talloc failed\n"));
1137 return;
1138 }
1139 state->ev = ev;
1140 state->msg_ctx = msg_ctx;
1141
1142 status = addrchange_context_create(state, &state->ctx);
1143 if (!NT_STATUS_IS_OK(status)) {
1144 DEBUG(10, ("addrchange_context_create failed: %s\n",
1145 nt_errstr(status)));
1146 TALLOC_FREE(state);
1147 return;
1148 }
1149 req = addrchange_send(state, ev, state->ctx);
1150 if (req == NULL) {
1151 DEBUG(0, ("addrchange_send failed\n"));
1152 TALLOC_FREE(state);
1153 return;
1154 }
1155 tevent_req_set_callback(req, winbindd_addr_changed, state);
1156 }
1157
1158 static void winbindd_addr_changed(struct tevent_req *req)
1159 {
1160 struct winbindd_addrchanged_state *state = tevent_req_callback_data(
1161 req, struct winbindd_addrchanged_state);
1162 enum addrchange_type type;
1163 struct sockaddr_storage addr;
1164 NTSTATUS status;
1165
1166 status = addrchange_recv(req, &type, &addr);
1167 TALLOC_FREE(req);
1168 if (!NT_STATUS_IS_OK(status)) {
1169 DEBUG(10, ("addrchange_recv failed: %s, stop listening\n",
1170 nt_errstr(status)));
1171 TALLOC_FREE(state);
1172 return;
1173 }
1174 if (type == ADDRCHANGE_DEL) {
1175 char addrstr[INET6_ADDRSTRLEN];
1176 DATA_BLOB blob;
1177
1178 print_sockaddr(addrstr, sizeof(addrstr), &addr);
1179
1180 DEBUG(3, ("winbindd: kernel (AF_NETLINK) dropped ip %s\n",
1181 addrstr));
1182
1183 blob = data_blob_const(addrstr, strlen(addrstr)+1);
1184
1185 status = messaging_send(state->msg_ctx,
1186 messaging_server_id(state->msg_ctx),
1187 MSG_WINBIND_IP_DROPPED, &blob);
1188 if (!NT_STATUS_IS_OK(status)) {
1189 DEBUG(10, ("messaging_send failed: %s - ignoring\n",
1190 nt_errstr(status)));
1191 }
1192 }
1193 req = addrchange_send(state, state->ev, state->ctx);
1194 if (req == NULL) {
1195 DEBUG(0, ("addrchange_send failed\n"));
1196 TALLOC_FREE(state);
1197 return;
1198 }
1199 tevent_req_set_callback(req, winbindd_addr_changed, state);
1200 }
1201
1202 /* Main function */
1203
1204 int main(int argc, char **argv, char **envp)
1205 {
1206 static bool is_daemon = False;
1207 static bool Fork = True;
1208 static bool log_stdout = False;
1209 static bool no_process_group = False;
1210 enum {
1211 OPT_DAEMON = 1000,
1212 OPT_FORK,
1213 OPT_NO_PROCESS_GROUP,
1214 OPT_LOG_STDOUT
1215 };
1216 struct poptOption long_options[] = {
1217 POPT_AUTOHELP
1218 { "stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1219 { "foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Daemon in foreground mode" },
1220 { "no-process-group", 0, POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1221 { "daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1222 { "interactive", 'i', POPT_ARG_NONE, NULL, 'i', "Interactive mode" },
1223 { "no-caching", 'n', POPT_ARG_NONE, NULL, 'n', "Disable caching" },
1224 POPT_COMMON_SAMBA
1225 POPT_TABLEEND
1226 };
1227 poptContext pc;
1228 int opt;
1229 TALLOC_CTX *frame;
1230 NTSTATUS status;
1231
1232 /*
1233 * Do this before any other talloc operation
1234 */
1235 talloc_enable_null_tracking();
1236 frame = talloc_stackframe();
1237
1238 /* glibc (?) likes to print "User defined signal 1" and exit if a
1239 SIGUSR[12] is received before a handler is installed */
1240
1241 CatchSignal(SIGUSR1, SIG_IGN);
1242 CatchSignal(SIGUSR2, SIG_IGN);
1243
1244 fault_setup((void (*)(void *))fault_quit );
1245 dump_core_setup("winbindd");
1246
1247 load_case_tables();
1248
1249 /* Initialise for running in non-root mode */
1250
1251 sec_init();
1252
1253 set_remote_machine_name("winbindd", False);
1254
1255 /* Set environment variable so we don't recursively call ourselves.
1256 This may also be useful interactively. */
1257
1258 if ( !winbind_off() ) {
1259 DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
1260 exit(1);
1261 }
1262
1263 /* Initialise samba/rpc client stuff */
1264
1265 pc = poptGetContext("winbindd", argc, (const char **)argv, long_options, 0);
1266
1267 while ((opt = poptGetNextOpt(pc)) != -1) {
1268 switch (opt) {
1269 /* Don't become a daemon */
1270 case OPT_DAEMON:
1271 is_daemon = True;
1272 break;
1273 case 'i':
1274 interactive = True;
1275 log_stdout = True;
1276 Fork = False;
1277 break;
1278 case OPT_FORK:
1279 Fork = false;
1280 break;
1281 case OPT_NO_PROCESS_GROUP:
1282 no_process_group = true;
1283 break;
1284 case OPT_LOG_STDOUT:
1285 log_stdout = true;
1286 break;
1287 case 'n':
1288 opt_nocache = true;
1289 break;
1290 default:
1291 d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1292 poptBadOption(pc, 0), poptStrerror(opt));
1293 poptPrintUsage(pc, stderr, 0);
1294 exit(1);
1295 }
1296 }
1297
1298 if (is_daemon && interactive) {
1299 d_fprintf(stderr,"\nERROR: "
1300 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
1301 poptPrintUsage(pc, stderr, 0);
1302 exit(1);
1303 }
1304
1305 if (log_stdout && Fork) {
1306 d_fprintf(stderr, "\nERROR: "
1307 "Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n\n");
1308 poptPrintUsage(pc, stderr, 0);
1309 exit(1);
1310 }
1311
1312 poptFreeContext(pc);
1313
1314 if (!override_logfile) {
1315 char *lfile = NULL;
1316 if (asprintf(&lfile,"%s/log.winbindd",
1317 get_dyn_LOGFILEBASE()) > 0) {
1318 lp_set_logfile(lfile);
1319 SAFE_FREE(lfile);
1320 }
1321 }
1322 if (log_stdout) {
1323 setup_logging("winbindd", DEBUG_STDOUT);
1324 } else {
1325 setup_logging("winbindd", DEBUG_FILE);
1326 }
1327 reopen_logs();
1328
1329 DEBUG(0,("winbindd version %s started.\n", samba_version_string()));
1330 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1331
1332 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1333 DEBUG(0, ("error opening config file\n"));
1334 exit(1);
1335 }
1336
1337 /* Initialise messaging system */
1338
1339 if (winbind_messaging_context() == NULL) {
1340 exit(1);
1341 }
1342
1343 if (!reload_services_file(NULL)) {
1344 DEBUG(0, ("error opening config file\n"));
1345 exit(1);
1346 }
1347
1348 if (!directory_exist(lp_lockdir())) {
1349 mkdir(lp_lockdir(), 0755);
1350 }
1351
1352 /* Setup names. */
1353
1354 if (!init_names())
1355 exit(1);
1356
1357 load_interfaces();
1358
1359 if (!secrets_init()) {
1360
1361 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1362 return False;
1363 }
1364
1365 /* Unblock all signals we are interested in as they may have been
1366 blocked by the parent process. */
1367
1368 BlockSignals(False, SIGINT);
1369 BlockSignals(False, SIGQUIT);
1370 BlockSignals(False, SIGTERM);
1371 BlockSignals(False, SIGUSR1);
1372 BlockSignals(False, SIGUSR2);
1373 BlockSignals(False, SIGHUP);
1374 BlockSignals(False, SIGCHLD);
1375
1376 if (!interactive)
1377 become_daemon(Fork, no_process_group, log_stdout);
1378
1379 pidfile_create("winbindd");
1380
1381 #if HAVE_SETPGID
1382 /*
1383 * If we're interactive we want to set our own process group for
1384 * signal management.
1385 */
1386 if (interactive && !no_process_group)
1387 setpgid( (pid_t)0, (pid_t)0);
1388 #endif
1389
1390 TimeInit();
1391
1392 /* Don't use winbindd_reinit_after_fork here as
1393 * we're just starting up and haven't created any
1394 * winbindd-specific resources we must free yet. JRA.
1395 */
1396
1397 status = reinit_after_fork(winbind_messaging_context(),
1398 winbind_event_context(),
1399 procid_self(), false);
1400 if (!NT_STATUS_IS_OK(status)) {
1401 DEBUG(0,("reinit_after_fork() failed\n"));
1402 exit(1);
1403 }
1404
1405 winbindd_register_handlers();
1406
1407 status = init_system_info();
1408 if (!NT_STATUS_IS_OK(status)) {
1409 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1410 nt_errstr(status)));
1411 exit(1);
1412 }
1413
1414 rpc_lsarpc_init(NULL);
1415 rpc_samr_init(NULL);
1416
1417 winbindd_init_addrchange(NULL, winbind_event_context(),
1418 winbind_messaging_context());
1419
1420 /* setup listen sockets */
1421
1422 if (!winbindd_setup_listeners()) {
1423 DEBUG(0,("winbindd_setup_listeners() failed\n"));
1424 exit(1);
1425 }
1426
1427 TALLOC_FREE(frame);
1428 /* Loop waiting for requests */
1429 while (1) {
1430 frame = talloc_stackframe();
1431
1432 if (tevent_loop_once(winbind_event_context()) == -1) {
1433 DEBUG(1, ("tevent_loop_once() failed: %s\n",
1434 strerror(errno)));
1435 return 1;
1436 }
1437
1438 TALLOC_FREE(frame);
1439 }
1440
1441 return 0;
1442 }
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