2 Unix SMB/CIFS implementation.
4 Winbind daemon for ntdom nss module
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
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.
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.
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/>.
27 #include "../../nsswitch/libwbclient/wbc_async.h"
28 #include "librpc/gen_ndr/messaging.h"
31 #define DBGC_CLASS DBGC_WINBIND
33 static void remove_client(struct winbindd_cli_state
*state
);
35 static bool opt_nocache
= False
;
36 static bool interactive
= False
;
38 extern bool override_logfile
;
40 struct messaging_context
*winbind_messaging_context(void)
42 static struct messaging_context
*ctx
;
45 ctx
= messaging_init(NULL
, procid_self(),
46 winbind_event_context());
49 DEBUG(0, ("Could not init winbind messaging context.\n"));
54 /* Reload configuration */
56 static bool reload_services_file(const char *lfile
)
61 const char *fname
= lp_configfile();
63 if (file_exist(fname
) && !strcsequal(fname
,get_dyn_CONFIGFILE())) {
64 set_dyn_CONFIGFILE(fname
);
68 /* if this is a child, restore the logfile to the special
69 name - <domain>, idmap, etc. */
70 if (lfile
&& *lfile
) {
71 lp_set_logfile(lfile
);
75 ret
= lp_load(get_dyn_CONFIGFILE(),False
,False
,True
,True
);
84 /**************************************************************************** **
86 **************************************************************************** */
88 static void fault_quit(void)
93 static void winbindd_status(void)
95 struct winbindd_cli_state
*tmp
;
97 DEBUG(0, ("winbindd status:\n"));
99 /* Print client state information */
101 DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
103 if (DEBUGLEVEL
>= 2 && winbindd_num_clients()) {
104 DEBUG(2, ("\tclient list:\n"));
105 for(tmp
= winbindd_client_list(); tmp
; tmp
= tmp
->next
) {
106 DEBUGADD(2, ("\t\tpid %lu, sock %d\n",
107 (unsigned long)tmp
->pid
, tmp
->sock
));
112 /* Print winbindd status to log file */
114 static void print_winbindd_status(void)
119 /* Flush client cache */
121 static void flush_caches(void)
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. */
127 if (!wcache_invalidate_cache()) {
128 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
129 if (!winbindd_cache_validate_and_initialize()) {
135 static void flush_caches_noinit(void)
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.
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
150 if (!wcache_invalidate_cache_noinit()) {
151 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
152 if (!winbindd_cache_validate_and_initialize()) {
158 /* Handle the signal by unlinking socket and exiting */
160 static void terminate(bool is_parent
)
163 /* When parent goes away we should
164 * remove the socket file. Not so
165 * when children terminate.
169 if (asprintf(&path
, "%s/%s",
170 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME
) > 0) {
178 trustdom_cache_shutdown();
180 gencache_stabilize();
184 TALLOC_CTX
*mem_ctx
= talloc_init("end_description");
185 char *description
= talloc_describe_all(mem_ctx
);
187 DEBUG(3, ("tallocs left:\n%s\n", description
));
188 talloc_destroy(mem_ctx
);
193 serverid_deregister_self();
200 static void winbindd_sig_term_handler(struct tevent_context
*ev
,
201 struct tevent_signal
*se
,
207 bool *is_parent
= talloc_get_type_abort(private_data
, bool);
209 DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
210 signum
, (int)*is_parent
));
211 terminate(*is_parent
);
214 bool winbindd_setup_sig_term_handler(bool parent
)
216 struct tevent_signal
*se
;
219 is_parent
= talloc(winbind_event_context(), bool);
226 se
= tevent_add_signal(winbind_event_context(),
229 winbindd_sig_term_handler
,
232 DEBUG(0,("failed to setup SIGTERM handler"));
233 talloc_free(is_parent
);
237 se
= tevent_add_signal(winbind_event_context(),
240 winbindd_sig_term_handler
,
243 DEBUG(0,("failed to setup SIGINT handler"));
244 talloc_free(is_parent
);
248 se
= tevent_add_signal(winbind_event_context(),
251 winbindd_sig_term_handler
,
254 DEBUG(0,("failed to setup SIGINT handler"));
255 talloc_free(is_parent
);
262 static void winbindd_sig_hup_handler(struct tevent_context
*ev
,
263 struct tevent_signal
*se
,
269 const char *file
= (const char *)private_data
;
271 DEBUG(1,("Reloading services after SIGHUP\n"));
272 flush_caches_noinit();
273 reload_services_file(file
);
276 bool winbindd_setup_sig_hup_handler(const char *lfile
)
278 struct tevent_signal
*se
;
282 file
= talloc_strdup(winbind_event_context(),
289 se
= tevent_add_signal(winbind_event_context(),
290 winbind_event_context(),
292 winbindd_sig_hup_handler
,
301 static void winbindd_sig_chld_handler(struct tevent_context
*ev
,
302 struct tevent_signal
*se
,
310 while ((pid
= sys_waitpid(-1, NULL
, WNOHANG
)) > 0) {
311 winbind_child_died(pid
);
315 static bool winbindd_setup_sig_chld_handler(void)
317 struct tevent_signal
*se
;
319 se
= tevent_add_signal(winbind_event_context(),
320 winbind_event_context(),
322 winbindd_sig_chld_handler
,
331 static void winbindd_sig_usr2_handler(struct tevent_context
*ev
,
332 struct tevent_signal
*se
,
338 print_winbindd_status();
341 static bool winbindd_setup_sig_usr2_handler(void)
343 struct tevent_signal
*se
;
345 se
= tevent_add_signal(winbind_event_context(),
346 winbind_event_context(),
348 winbindd_sig_usr2_handler
,
357 /* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
358 static void msg_reload_services(struct messaging_context
*msg
,
361 struct server_id server_id
,
364 /* Flush various caches */
366 reload_services_file((const char *) private_data
);
369 /* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
370 static void msg_shutdown(struct messaging_context
*msg
,
373 struct server_id server_id
,
376 /* only the parent waits for this message */
377 DEBUG(0,("Got shutdown message\n"));
382 static void winbind_msg_validate_cache(struct messaging_context
*msg_ctx
,
385 struct server_id server_id
,
391 DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
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...
399 child_pid
= sys_fork();
401 if (child_pid
== -1) {
402 DEBUG(1, ("winbind_msg_validate_cache: Could not fork: %s\n",
407 if (child_pid
!= 0) {
409 DEBUG(5, ("winbind_msg_validate_cache: child created with "
410 "pid %d.\n", (int)child_pid
));
416 if (!winbindd_reinit_after_fork(NULL
)) {
420 /* install default SIGCHLD handler: validation code uses fork/waitpid */
421 CatchSignal(SIGCHLD
, SIG_DFL
);
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
,
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
[] = {
436 /* Enumeration functions */
438 { WINBINDD_LIST_TRUSTDOM
, winbindd_list_trusted_domains
,
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_NETBIOS_NAME
, winbindd_netbios_name
, "NETBIOS_NAME" },
449 { WINBINDD_PRIV_PIPE_DIR
, winbindd_priv_pipe_dir
,
450 "WINBINDD_PRIV_PIPE_DIR" },
452 /* Credential cache access */
453 { WINBINDD_CCACHE_NTLMAUTH
, winbindd_ccache_ntlm_auth
, "NTLMAUTH" },
454 { WINBINDD_CCACHE_SAVE
, winbindd_ccache_save
, "CCACHE_SAVE" },
458 { WINBINDD_WINS_BYNAME
, winbindd_wins_byname
, "WINS_BYNAME" },
459 { WINBINDD_WINS_BYIP
, winbindd_wins_byip
, "WINS_BYIP" },
463 { WINBINDD_NUM_CMDS
, NULL
, "NONE" }
466 struct winbindd_async_dispatch_table
{
467 enum winbindd_cmd cmd
;
468 const char *cmd_name
;
469 struct tevent_req
*(*send_req
)(TALLOC_CTX
*mem_ctx
,
470 struct tevent_context
*ev
,
471 struct winbindd_cli_state
*cli
,
472 struct winbindd_request
*request
);
473 NTSTATUS (*recv_req
)(struct tevent_req
*req
,
474 struct winbindd_response
*presp
);
477 static struct winbindd_async_dispatch_table async_nonpriv_table
[] = {
478 { WINBINDD_PING
, "PING",
479 wb_ping_send
, wb_ping_recv
},
480 { WINBINDD_LOOKUPSID
, "LOOKUPSID",
481 winbindd_lookupsid_send
, winbindd_lookupsid_recv
},
482 { WINBINDD_LOOKUPNAME
, "LOOKUPNAME",
483 winbindd_lookupname_send
, winbindd_lookupname_recv
},
484 { WINBINDD_SID_TO_UID
, "SID_TO_UID",
485 winbindd_sid_to_uid_send
, winbindd_sid_to_uid_recv
},
486 { WINBINDD_SID_TO_GID
, "SID_TO_GID",
487 winbindd_sid_to_gid_send
, winbindd_sid_to_gid_recv
},
488 { WINBINDD_UID_TO_SID
, "UID_TO_SID",
489 winbindd_uid_to_sid_send
, winbindd_uid_to_sid_recv
},
490 { WINBINDD_GID_TO_SID
, "GID_TO_SID",
491 winbindd_gid_to_sid_send
, winbindd_gid_to_sid_recv
},
492 { WINBINDD_GETPWSID
, "GETPWSID",
493 winbindd_getpwsid_send
, winbindd_getpwsid_recv
},
494 { WINBINDD_GETPWNAM
, "GETPWNAM",
495 winbindd_getpwnam_send
, winbindd_getpwnam_recv
},
496 { WINBINDD_GETPWUID
, "GETPWUID",
497 winbindd_getpwuid_send
, winbindd_getpwuid_recv
},
498 { WINBINDD_GETSIDALIASES
, "GETSIDALIASES",
499 winbindd_getsidaliases_send
, winbindd_getsidaliases_recv
},
500 { WINBINDD_GETUSERDOMGROUPS
, "GETUSERDOMGROUPS",
501 winbindd_getuserdomgroups_send
, winbindd_getuserdomgroups_recv
},
502 { WINBINDD_GETGROUPS
, "GETGROUPS",
503 winbindd_getgroups_send
, winbindd_getgroups_recv
},
504 { WINBINDD_SHOW_SEQUENCE
, "SHOW_SEQUENCE",
505 winbindd_show_sequence_send
, winbindd_show_sequence_recv
},
506 { WINBINDD_GETGRGID
, "GETGRGID",
507 winbindd_getgrgid_send
, winbindd_getgrgid_recv
},
508 { WINBINDD_GETGRNAM
, "GETGRNAM",
509 winbindd_getgrnam_send
, winbindd_getgrnam_recv
},
510 { WINBINDD_GETUSERSIDS
, "GETUSERSIDS",
511 winbindd_getusersids_send
, winbindd_getusersids_recv
},
512 { WINBINDD_LOOKUPRIDS
, "LOOKUPRIDS",
513 winbindd_lookuprids_send
, winbindd_lookuprids_recv
},
514 { WINBINDD_SETPWENT
, "SETPWENT",
515 winbindd_setpwent_send
, winbindd_setpwent_recv
},
516 { WINBINDD_GETPWENT
, "GETPWENT",
517 winbindd_getpwent_send
, winbindd_getpwent_recv
},
518 { WINBINDD_ENDPWENT
, "ENDPWENT",
519 winbindd_endpwent_send
, winbindd_endpwent_recv
},
520 { WINBINDD_DSGETDCNAME
, "DSGETDCNAME",
521 winbindd_dsgetdcname_send
, winbindd_dsgetdcname_recv
},
522 { WINBINDD_GETDCNAME
, "GETDCNAME",
523 winbindd_getdcname_send
, winbindd_getdcname_recv
},
524 { WINBINDD_SETGRENT
, "SETGRENT",
525 winbindd_setgrent_send
, winbindd_setgrent_recv
},
526 { WINBINDD_GETGRENT
, "GETGRENT",
527 winbindd_getgrent_send
, winbindd_getgrent_recv
},
528 { WINBINDD_ENDGRENT
, "ENDGRENT",
529 winbindd_endgrent_send
, winbindd_endgrent_recv
},
530 { WINBINDD_LIST_USERS
, "LIST_USERS",
531 winbindd_list_users_send
, winbindd_list_users_recv
},
532 { WINBINDD_LIST_GROUPS
, "LIST_GROUPS",
533 winbindd_list_groups_send
, winbindd_list_groups_recv
},
534 { WINBINDD_CHECK_MACHACC
, "CHECK_MACHACC",
535 winbindd_check_machine_acct_send
, winbindd_check_machine_acct_recv
},
536 { WINBINDD_PING_DC
, "PING_DC",
537 winbindd_ping_dc_send
, winbindd_ping_dc_recv
},
538 { WINBINDD_PAM_AUTH
, "PAM_AUTH",
539 winbindd_pam_auth_send
, winbindd_pam_auth_recv
},
540 { WINBINDD_PAM_LOGOFF
, "PAM_LOGOFF",
541 winbindd_pam_logoff_send
, winbindd_pam_logoff_recv
},
542 { WINBINDD_PAM_CHAUTHTOK
, "PAM_CHAUTHTOK",
543 winbindd_pam_chauthtok_send
, winbindd_pam_chauthtok_recv
},
544 { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP
, "PAM_CHNG_PSWD_AUTH_CRAP",
545 winbindd_pam_chng_pswd_auth_crap_send
,
546 winbindd_pam_chng_pswd_auth_crap_recv
},
548 { 0, NULL
, NULL
, NULL
}
551 static struct winbindd_async_dispatch_table async_priv_table
[] = {
552 { WINBINDD_ALLOCATE_UID
, "ALLOCATE_UID",
553 winbindd_allocate_uid_send
, winbindd_allocate_uid_recv
},
554 { WINBINDD_ALLOCATE_GID
, "ALLOCATE_GID",
555 winbindd_allocate_gid_send
, winbindd_allocate_gid_recv
},
556 { WINBINDD_SET_MAPPING
, "SET_MAPPING",
557 winbindd_set_mapping_send
, winbindd_set_mapping_recv
},
558 { WINBINDD_REMOVE_MAPPING
, "SET_MAPPING",
559 winbindd_remove_mapping_send
, winbindd_remove_mapping_recv
},
560 { WINBINDD_SET_HWM
, "SET_HWM",
561 winbindd_set_hwm_send
, winbindd_set_hwm_recv
},
562 { WINBINDD_CHANGE_MACHACC
, "CHANGE_MACHACC",
563 winbindd_change_machine_acct_send
, winbindd_change_machine_acct_recv
},
564 { WINBINDD_PAM_AUTH_CRAP
, "PAM_AUTH_CRAP",
565 winbindd_pam_auth_crap_send
, winbindd_pam_auth_crap_recv
},
567 { 0, NULL
, NULL
, NULL
}
570 static void wb_request_done(struct tevent_req
*req
);
572 static void process_request(struct winbindd_cli_state
*state
)
574 struct winbindd_dispatch_table
*table
= dispatch_table
;
575 struct winbindd_async_dispatch_table
*atable
;
577 state
->mem_ctx
= talloc_init("winbind request");
578 if (state
->mem_ctx
== NULL
)
581 /* Remember who asked us. */
582 state
->pid
= state
->request
->pid
;
584 state
->cmd_name
= "unknown request";
585 state
->recv_fn
= NULL
;
587 /* Process command */
589 for (atable
= async_nonpriv_table
; atable
->send_req
; atable
+= 1) {
590 if (state
->request
->cmd
== atable
->cmd
) {
595 if ((atable
->send_req
== NULL
) && state
->privileged
) {
596 for (atable
= async_priv_table
; atable
->send_req
;
598 if (state
->request
->cmd
== atable
->cmd
) {
604 if (atable
->send_req
!= NULL
) {
605 struct tevent_req
*req
;
607 state
->cmd_name
= atable
->cmd_name
;
608 state
->recv_fn
= atable
->recv_req
;
610 DEBUG(10, ("process_request: Handling async request %d:%s\n",
611 (int)state
->pid
, state
->cmd_name
));
613 req
= atable
->send_req(state
->mem_ctx
, winbind_event_context(),
614 state
, state
->request
);
616 DEBUG(0, ("process_request: atable->send failed for "
617 "%s\n", atable
->cmd_name
));
618 request_error(state
);
621 tevent_req_set_callback(req
, wb_request_done
, state
);
625 state
->response
= talloc_zero(state
->mem_ctx
,
626 struct winbindd_response
);
627 if (state
->response
== NULL
) {
628 DEBUG(10, ("talloc failed\n"));
629 remove_client(state
);
632 state
->response
->result
= WINBINDD_PENDING
;
633 state
->response
->length
= sizeof(struct winbindd_response
);
635 for (table
= dispatch_table
; table
->fn
; table
++) {
636 if (state
->request
->cmd
== table
->cmd
) {
637 DEBUG(10,("process_request: request fn %s\n",
638 table
->winbindd_cmd_name
));
639 state
->cmd_name
= table
->winbindd_cmd_name
;
646 DEBUG(10,("process_request: unknown request fn number %d\n",
647 (int)state
->request
->cmd
));
648 request_error(state
);
652 static void wb_request_done(struct tevent_req
*req
)
654 struct winbindd_cli_state
*state
= tevent_req_callback_data(
655 req
, struct winbindd_cli_state
);
658 state
->response
= talloc_zero(state
->mem_ctx
,
659 struct winbindd_response
);
660 if (state
->response
== NULL
) {
661 DEBUG(0, ("wb_request_done[%d:%s]: talloc_zero failed - removing client\n",
662 (int)state
->pid
, state
->cmd_name
));
663 remove_client(state
);
666 state
->response
->result
= WINBINDD_PENDING
;
667 state
->response
->length
= sizeof(struct winbindd_response
);
669 status
= state
->recv_fn(req
, state
->response
);
672 DEBUG(10,("wb_request_done[%d:%s]: %s\n",
673 (int)state
->pid
, state
->cmd_name
, nt_errstr(status
)));
675 if (!NT_STATUS_IS_OK(status
)) {
676 request_error(state
);
683 * This is the main event loop of winbind requests. It goes through a
684 * state-machine of 3 read/write requests, 4 if you have extra data to send.
686 * An idle winbind client has a read request of 4 bytes outstanding,
687 * finalizing function is request_len_recv, checking the length. request_recv
688 * then processes the packet. The processing function then at some point has
689 * to call request_finished which schedules sending the response.
692 static void request_finished(struct winbindd_cli_state
*state
);
694 static void winbind_client_request_read(struct tevent_req
*req
);
695 static void winbind_client_response_written(struct tevent_req
*req
);
697 static void request_finished(struct winbindd_cli_state
*state
)
699 struct tevent_req
*req
;
701 TALLOC_FREE(state
->request
);
703 req
= wb_resp_write_send(state
, winbind_event_context(),
704 state
->out_queue
, state
->sock
,
707 DEBUG(10,("request_finished[%d:%s]: wb_resp_write_send() failed\n",
708 (int)state
->pid
, state
->cmd_name
));
709 remove_client(state
);
712 tevent_req_set_callback(req
, winbind_client_response_written
, state
);
715 static void winbind_client_response_written(struct tevent_req
*req
)
717 struct winbindd_cli_state
*state
= tevent_req_callback_data(
718 req
, struct winbindd_cli_state
);
722 ret
= wb_resp_write_recv(req
, &err
);
727 DEBUG(2, ("Could not write response[%d:%s] to client: %s\n",
728 (int)state
->pid
, state
->cmd_name
, strerror(err
)));
729 remove_client(state
);
733 DEBUG(10,("winbind_client_response_written[%d:%s]: delivered response "
734 "to client\n", (int)state
->pid
, state
->cmd_name
));
736 TALLOC_FREE(state
->mem_ctx
);
737 state
->response
= NULL
;
738 state
->cmd_name
= "no request";
739 state
->recv_fn
= NULL
;
741 req
= wb_req_read_send(state
, winbind_event_context(), state
->sock
,
742 WINBINDD_MAX_EXTRA_DATA
);
744 remove_client(state
);
747 tevent_req_set_callback(req
, winbind_client_request_read
, state
);
750 void request_error(struct winbindd_cli_state
*state
)
752 SMB_ASSERT(state
->response
->result
== WINBINDD_PENDING
);
753 state
->response
->result
= WINBINDD_ERROR
;
754 request_finished(state
);
757 void request_ok(struct winbindd_cli_state
*state
)
759 SMB_ASSERT(state
->response
->result
== WINBINDD_PENDING
);
760 state
->response
->result
= WINBINDD_OK
;
761 request_finished(state
);
764 /* Process a new connection by adding it to the client connection list */
766 void winbindd_accepted_new_connection(int accepted_sock
, bool privileged
)
768 struct winbindd_cli_state
*state
;
769 struct tevent_req
*req
;
771 /* Create new connection structure */
773 if ((state
= TALLOC_ZERO_P(NULL
, struct winbindd_cli_state
)) == NULL
) {
774 close(accepted_sock
);
778 state
->sock
= accepted_sock
;
780 state
->out_queue
= tevent_queue_create(state
, "winbind client reply");
781 if (state
->out_queue
== NULL
) {
782 close(accepted_sock
);
787 state
->last_access
= time(NULL
);
789 state
->privileged
= privileged
;
791 req
= wb_req_read_send(state
, winbind_event_context(), state
->sock
,
792 WINBINDD_MAX_EXTRA_DATA
);
795 close(accepted_sock
);
798 tevent_req_set_callback(req
, winbind_client_request_read
, state
);
800 /* Add to connection list */
802 /* Once the client is added here, we can be sure something will close it eventually */
803 winbindd_add_client(state
);
806 static void new_connection(int listen_sock
, bool privileged
)
808 struct sockaddr_un sunaddr
;
812 /* Accept connection */
814 len
= sizeof(sunaddr
);
817 sock
= accept(listen_sock
, (struct sockaddr
*)(void *)&sunaddr
,
819 } while (sock
== -1 && errno
== EINTR
);
824 DEBUG(6,("accepted socket %d\n", sock
));
826 winbindd_accepted_new_connection(sock
, privileged
);
829 static void winbind_client_request_read(struct tevent_req
*req
)
831 struct winbindd_cli_state
*state
= tevent_req_callback_data(
832 req
, struct winbindd_cli_state
);
836 ret
= wb_req_read_recv(req
, state
, &state
->request
, &err
);
840 DEBUG(6, ("closing socket %d, client exited\n",
843 DEBUG(2, ("Could not read client request from fd %d: "
844 "%s\n", state
->sock
, strerror(err
)));
848 remove_client(state
);
851 process_request(state
);
854 /* Remove a client connection from client connection list */
856 static void remove_client(struct winbindd_cli_state
*state
)
861 /* It's a dead client - hold a funeral */
867 if (state
->sock
!= -1) {
868 /* tell client, we are closing ... */
869 nwritten
= write(state
->sock
, &c
, sizeof(c
));
870 if (nwritten
== -1) {
871 DEBUG(2, ("final write to client failed: %s\n",
881 TALLOC_FREE(state
->mem_ctx
);
883 /* Remove from list and free */
885 winbindd_remove_client(state
);
889 /* Shutdown client connection which has been idle for the longest time */
891 static bool remove_idle_client(void)
893 struct winbindd_cli_state
*state
, *remove_state
= NULL
;
894 time_t last_access
= 0;
897 for (state
= winbindd_client_list(); state
; state
= state
->next
) {
898 if (state
->response
== NULL
&&
899 !state
->pwent_state
&& !state
->grent_state
) {
901 if (!last_access
|| state
->last_access
< last_access
) {
902 last_access
= state
->last_access
;
903 remove_state
= state
;
909 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
910 nidle
, remove_state
->sock
, (unsigned int)remove_state
->pid
));
911 remove_client(remove_state
);
918 struct winbindd_listen_state
{
923 static void winbindd_listen_fde_handler(struct tevent_context
*ev
,
924 struct tevent_fd
*fde
,
928 struct winbindd_listen_state
*s
= talloc_get_type_abort(private_data
,
929 struct winbindd_listen_state
);
931 while (winbindd_num_clients() >
932 WINBINDD_MAX_SIMULTANEOUS_CLIENTS
- 1) {
933 DEBUG(5,("winbindd: Exceeding %d client "
934 "connections, removing idle "
936 WINBINDD_MAX_SIMULTANEOUS_CLIENTS
));
937 if (!remove_idle_client()) {
938 DEBUG(0,("winbindd: Exceeding %d "
939 "client connections, no idle "
940 "connection found\n",
941 WINBINDD_MAX_SIMULTANEOUS_CLIENTS
));
945 new_connection(s
->fd
, s
->privileged
);
948 static bool winbindd_setup_listeners(void)
950 struct winbindd_listen_state
*pub_state
= NULL
;
951 struct winbindd_listen_state
*priv_state
= NULL
;
952 struct tevent_fd
*fde
;
954 pub_state
= talloc(winbind_event_context(),
955 struct winbindd_listen_state
);
960 pub_state
->privileged
= false;
961 pub_state
->fd
= open_winbindd_socket();
962 if (pub_state
->fd
== -1) {
966 fde
= tevent_add_fd(winbind_event_context(), pub_state
, pub_state
->fd
,
967 TEVENT_FD_READ
, winbindd_listen_fde_handler
,
970 close(pub_state
->fd
);
973 tevent_fd_set_auto_close(fde
);
975 priv_state
= talloc(winbind_event_context(),
976 struct winbindd_listen_state
);
981 priv_state
->privileged
= true;
982 priv_state
->fd
= open_winbindd_priv_socket();
983 if (priv_state
->fd
== -1) {
987 fde
= tevent_add_fd(winbind_event_context(), priv_state
,
988 priv_state
->fd
, TEVENT_FD_READ
,
989 winbindd_listen_fde_handler
, priv_state
);
991 close(priv_state
->fd
);
994 tevent_fd_set_auto_close(fde
);
998 TALLOC_FREE(pub_state
);
999 TALLOC_FREE(priv_state
);
1003 bool winbindd_use_idmap_cache(void)
1005 return !opt_nocache
;
1008 bool winbindd_use_cache(void)
1010 return !opt_nocache
;
1013 void winbindd_register_handlers(void)
1015 struct tevent_timer
*te
;
1016 /* Don't use winbindd_reinit_after_fork here as
1017 * we're just starting up and haven't created any
1018 * winbindd-specific resources we must free yet. JRA.
1021 if (!NT_STATUS_IS_OK(reinit_after_fork(winbind_messaging_context(),
1022 winbind_event_context(),
1024 DEBUG(0,("reinit_after_fork() failed\n"));
1028 /* Setup signal handlers */
1030 if (!winbindd_setup_sig_term_handler(true))
1032 if (!winbindd_setup_sig_hup_handler(NULL
))
1034 if (!winbindd_setup_sig_chld_handler())
1036 if (!winbindd_setup_sig_usr2_handler())
1039 CatchSignal(SIGPIPE
, SIG_IGN
); /* Ignore sigpipe */
1042 * Ensure all cache and idmap caches are consistent
1043 * and initialized before we startup.
1045 if (!winbindd_cache_validate_and_initialize()) {
1049 /* get broadcast messages */
1051 if (!serverid_register_self(FLAG_MSG_GENERAL
|FLAG_MSG_DBWRAP
)) {
1052 DEBUG(1, ("Could not register myself in serverid.tdb\n"));
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
);
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
);
1071 messaging_register(winbind_messaging_context(), NULL
,
1072 MSG_DUMP_EVENT_LIST
, winbind_msg_dump_event_list
);
1074 messaging_register(winbind_messaging_context(), NULL
,
1075 MSG_WINBIND_VALIDATE_CACHE
,
1076 winbind_msg_validate_cache
);
1078 messaging_register(winbind_messaging_context(), NULL
,
1079 MSG_WINBIND_DUMP_DOMAIN_LIST
,
1080 winbind_msg_dump_domain_list
);
1082 /* Register handler for MSG_DEBUG. */
1083 messaging_register(winbind_messaging_context(), NULL
,
1087 netsamlogon_cache_init(); /* Non-critical */
1089 /* clear the cached list of trusted domains */
1093 if (!init_domain_list()) {
1094 DEBUG(0,("unable to initialize domain list\n"));
1099 init_locator_child();
1101 smb_nscd_flush_user_cache();
1102 smb_nscd_flush_group_cache();
1104 te
= tevent_add_timer(winbind_event_context(), NULL
, timeval_zero(),
1105 rescan_trusted_domains
, NULL
);
1107 DEBUG(0, ("Could not trigger rescan_trusted_domains()\n"));
1115 int main(int argc
, char **argv
, char **envp
)
1117 static bool is_daemon
= False
;
1118 static bool Fork
= True
;
1119 static bool log_stdout
= False
;
1120 static bool no_process_group
= False
;
1124 OPT_NO_PROCESS_GROUP
,
1127 struct poptOption long_options
[] = {
1129 { "stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
1130 { "foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Daemon in foreground mode" },
1131 { "no-process-group", 0, POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
1132 { "daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
1133 { "interactive", 'i', POPT_ARG_NONE
, NULL
, 'i', "Interactive mode" },
1134 { "no-caching", 'n', POPT_ARG_NONE
, NULL
, 'n', "Disable caching" },
1140 TALLOC_CTX
*frame
= talloc_stackframe();
1142 /* glibc (?) likes to print "User defined signal 1" and exit if a
1143 SIGUSR[12] is received before a handler is installed */
1145 CatchSignal(SIGUSR1
, SIG_IGN
);
1146 CatchSignal(SIGUSR2
, SIG_IGN
);
1148 fault_setup((void (*)(void *))fault_quit
);
1149 dump_core_setup("winbindd");
1153 /* Initialise for running in non-root mode */
1157 set_remote_machine_name("winbindd", False
);
1159 /* Set environment variable so we don't recursively call ourselves.
1160 This may also be useful interactively. */
1162 if ( !winbind_off() ) {
1163 DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
1167 /* Initialise samba/rpc client stuff */
1169 pc
= poptGetContext("winbindd", argc
, (const char **)argv
, long_options
, 0);
1171 while ((opt
= poptGetNextOpt(pc
)) != -1) {
1173 /* Don't become a daemon */
1185 case OPT_NO_PROCESS_GROUP
:
1186 no_process_group
= true;
1188 case OPT_LOG_STDOUT
:
1195 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
1196 poptBadOption(pc
, 0), poptStrerror(opt
));
1197 poptPrintUsage(pc
, stderr
, 0);
1202 if (is_daemon
&& interactive
) {
1203 d_fprintf(stderr
,"\nERROR: "
1204 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
1205 poptPrintUsage(pc
, stderr
, 0);
1209 if (log_stdout
&& Fork
) {
1210 d_fprintf(stderr
, "\nERROR: "
1211 "Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n\n");
1212 poptPrintUsage(pc
, stderr
, 0);
1216 poptFreeContext(pc
);
1218 if (!override_logfile
) {
1220 if (asprintf(&lfile
,"%s/log.winbindd",
1221 get_dyn_LOGFILEBASE()) > 0) {
1222 lp_set_logfile(lfile
);
1226 setup_logging("winbindd", log_stdout
);
1229 DEBUG(0,("winbindd version %s started.\n", samba_version_string()));
1230 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1232 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1233 DEBUG(0, ("error opening config file\n"));
1237 /* Initialise messaging system */
1239 if (winbind_messaging_context() == NULL
) {
1243 if (!reload_services_file(NULL
)) {
1244 DEBUG(0, ("error opening config file\n"));
1248 if (!directory_exist(lp_lockdir())) {
1249 mkdir(lp_lockdir(), 0755);
1259 if (!secrets_init()) {
1261 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1265 /* Unblock all signals we are interested in as they may have been
1266 blocked by the parent process. */
1268 BlockSignals(False
, SIGINT
);
1269 BlockSignals(False
, SIGQUIT
);
1270 BlockSignals(False
, SIGTERM
);
1271 BlockSignals(False
, SIGUSR1
);
1272 BlockSignals(False
, SIGUSR2
);
1273 BlockSignals(False
, SIGHUP
);
1274 BlockSignals(False
, SIGCHLD
);
1277 become_daemon(Fork
, no_process_group
, log_stdout
);
1279 pidfile_create("winbindd");
1283 * If we're interactive we want to set our own process group for
1284 * signal management.
1286 if (interactive
&& !no_process_group
)
1287 setpgid( (pid_t
)0, (pid_t
)0);
1292 winbindd_register_handlers();
1294 /* setup listen sockets */
1296 if (!winbindd_setup_listeners()) {
1297 DEBUG(0,("winbindd_setup_listeners() failed\n"));
1302 /* Loop waiting for requests */
1304 frame
= talloc_stackframe();
1306 if (tevent_loop_once(winbind_event_context()) == -1) {
1307 DEBUG(1, ("tevent_loop_once() failed: %s\n",