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"
30 #define DBGC_CLASS DBGC_WINBIND
32 static bool opt_nocache
= False
;
33 static bool interactive
= False
;
35 extern bool override_logfile
;
37 struct event_context
*winbind_event_context(void)
39 static struct event_context
*ctx
;
41 if (!ctx
&& !(ctx
= event_context_init(NULL
))) {
42 smb_panic("Could not init winbind event context");
47 struct messaging_context
*winbind_messaging_context(void)
49 static struct messaging_context
*ctx
;
52 ctx
= messaging_init(NULL
, server_id_self(),
53 winbind_event_context());
56 DEBUG(0, ("Could not init winbind messaging context.\n"));
61 /* Reload configuration */
63 static bool reload_services_file(const char *lfile
)
68 const char *fname
= lp_configfile();
70 if (file_exist(fname
) && !strcsequal(fname
,get_dyn_CONFIGFILE())) {
71 set_dyn_CONFIGFILE(fname
);
75 /* if this is a child, restore the logfile to the special
76 name - <domain>, idmap, etc. */
77 if (lfile
&& *lfile
) {
78 lp_set_logfile(lfile
);
82 ret
= lp_load(get_dyn_CONFIGFILE(),False
,False
,True
,True
);
91 /**************************************************************************** **
93 **************************************************************************** */
95 static void fault_quit(void)
100 static void winbindd_status(void)
102 struct winbindd_cli_state
*tmp
;
104 DEBUG(0, ("winbindd status:\n"));
106 /* Print client state information */
108 DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
110 if (DEBUGLEVEL
>= 2 && winbindd_num_clients()) {
111 DEBUG(2, ("\tclient list:\n"));
112 for(tmp
= winbindd_client_list(); tmp
; tmp
= tmp
->next
) {
113 DEBUGADD(2, ("\t\tpid %lu, sock %d\n",
114 (unsigned long)tmp
->pid
, tmp
->sock
));
119 /* Print winbindd status to log file */
121 static void print_winbindd_status(void)
126 /* Flush client cache */
128 static void flush_caches(void)
130 /* We need to invalidate cached user list entries on a SIGHUP
131 otherwise cached access denied errors due to restrict anonymous
132 hang around until the sequence number changes. */
134 if (!wcache_invalidate_cache()) {
135 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
136 if (!winbindd_cache_validate_and_initialize()) {
142 /* Handle the signal by unlinking socket and exiting */
144 static void terminate(bool is_parent
)
147 /* When parent goes away we should
148 * remove the socket file. Not so
149 * when children terminate.
153 if (asprintf(&path
, "%s/%s",
154 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME
) > 0) {
162 trustdom_cache_shutdown();
166 TALLOC_CTX
*mem_ctx
= talloc_init("end_description");
167 char *description
= talloc_describe_all(mem_ctx
);
169 DEBUG(3, ("tallocs left:\n%s\n", description
));
170 talloc_destroy(mem_ctx
);
177 static void winbindd_sig_term_handler(struct tevent_context
*ev
,
178 struct tevent_signal
*se
,
184 bool *is_parent
= talloc_get_type_abort(private_data
, bool);
186 DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
187 signum
, (int)*is_parent
));
188 terminate(*is_parent
);
191 bool winbindd_setup_sig_term_handler(bool parent
)
193 struct tevent_signal
*se
;
196 is_parent
= talloc(winbind_event_context(), bool);
203 se
= tevent_add_signal(winbind_event_context(),
206 winbindd_sig_term_handler
,
209 DEBUG(0,("failed to setup SIGTERM handler"));
210 talloc_free(is_parent
);
214 se
= tevent_add_signal(winbind_event_context(),
217 winbindd_sig_term_handler
,
220 DEBUG(0,("failed to setup SIGINT handler"));
221 talloc_free(is_parent
);
225 se
= tevent_add_signal(winbind_event_context(),
228 winbindd_sig_term_handler
,
231 DEBUG(0,("failed to setup SIGINT handler"));
232 talloc_free(is_parent
);
239 static void winbindd_sig_hup_handler(struct tevent_context
*ev
,
240 struct tevent_signal
*se
,
246 const char *file
= (const char *)private_data
;
248 DEBUG(1,("Reloading services after SIGHUP\n"));
250 reload_services_file(file
);
253 bool winbindd_setup_sig_hup_handler(const char *lfile
)
255 struct tevent_signal
*se
;
259 file
= talloc_strdup(winbind_event_context(),
266 se
= tevent_add_signal(winbind_event_context(),
267 winbind_event_context(),
269 winbindd_sig_hup_handler
,
278 static void winbindd_sig_chld_handler(struct tevent_context
*ev
,
279 struct tevent_signal
*se
,
287 while ((pid
= sys_waitpid(-1, NULL
, WNOHANG
)) > 0) {
288 winbind_child_died(pid
);
292 static bool winbindd_setup_sig_chld_handler(void)
294 struct tevent_signal
*se
;
296 se
= tevent_add_signal(winbind_event_context(),
297 winbind_event_context(),
299 winbindd_sig_chld_handler
,
308 static void winbindd_sig_usr2_handler(struct tevent_context
*ev
,
309 struct tevent_signal
*se
,
315 print_winbindd_status();
318 static bool winbindd_setup_sig_usr2_handler(void)
320 struct tevent_signal
*se
;
322 se
= tevent_add_signal(winbind_event_context(),
323 winbind_event_context(),
325 winbindd_sig_usr2_handler
,
334 /* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
335 static void msg_reload_services(struct messaging_context
*msg
,
338 struct server_id server_id
,
341 /* Flush various caches */
343 reload_services_file((const char *) private_data
);
346 /* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
347 static void msg_shutdown(struct messaging_context
*msg
,
350 struct server_id server_id
,
353 /* only the parent waits for this message */
354 DEBUG(0,("Got shutdown message\n"));
359 static void winbind_msg_validate_cache(struct messaging_context
*msg_ctx
,
362 struct server_id server_id
,
367 struct sigaction act
;
368 struct sigaction oldact
;
370 DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
374 * call the validation code from a child:
375 * so we don't block the main winbindd and the validation
376 * code can safely use fork/waitpid...
379 child_pid
= sys_fork();
381 if (child_pid
== -1) {
382 DEBUG(1, ("winbind_msg_validate_cache: Could not fork: %s\n",
387 if (child_pid
!= 0) {
389 DEBUG(5, ("winbind_msg_validate_cache: child created with "
390 "pid %d.\n", (int)child_pid
));
396 /* install default SIGCHLD handler: validation code uses fork/waitpid */
398 act
.sa_handler
= SIG_DFL
;
400 /* We *want* SIGALRM to interrupt a system call. */
401 act
.sa_flags
= SA_RESTART
;
403 sigemptyset(&act
.sa_mask
);
404 sigaddset(&act
.sa_mask
,SIGCHLD
);
405 sigaction(SIGCHLD
,&act
,&oldact
);
407 ret
= (uint8
)winbindd_validate_cache_nobackup();
408 DEBUG(10, ("winbindd_msg_validata_cache: got return value %d\n", ret
));
409 messaging_send_buf(msg_ctx
, server_id
, MSG_WINBIND_VALIDATE_CACHE
, &ret
,
414 static struct winbindd_dispatch_table
{
415 enum winbindd_cmd cmd
;
416 void (*fn
)(struct winbindd_cli_state
*state
);
417 const char *winbindd_cmd_name
;
418 } dispatch_table
[] = {
422 { WINBINDD_GETPWNAM
, winbindd_getpwnam
, "GETPWNAM" },
423 { WINBINDD_GETPWUID
, winbindd_getpwuid
, "GETPWUID" },
424 { WINBINDD_GETPWSID
, winbindd_getpwsid
, "GETPWSID" },
426 { WINBINDD_SETPWENT
, winbindd_setpwent
, "SETPWENT" },
427 { WINBINDD_ENDPWENT
, winbindd_endpwent
, "ENDPWENT" },
428 { WINBINDD_GETPWENT
, winbindd_getpwent
, "GETPWENT" },
430 { WINBINDD_GETGROUPS
, winbindd_getgroups
, "GETGROUPS" },
431 { WINBINDD_GETUSERSIDS
, winbindd_getusersids
, "GETUSERSIDS" },
432 { WINBINDD_GETUSERDOMGROUPS
, winbindd_getuserdomgroups
,
433 "GETUSERDOMGROUPS" },
434 { WINBINDD_GETSIDALIASES
, winbindd_getsidaliases
,
435 "LOOKUPUSERALIASES" },
437 /* Group functions */
439 { WINBINDD_GETGRNAM
, winbindd_getgrnam
, "GETGRNAM" },
440 { WINBINDD_GETGRGID
, winbindd_getgrgid
, "GETGRGID" },
441 { WINBINDD_SETGRENT
, winbindd_setgrent
, "SETGRENT" },
442 { WINBINDD_ENDGRENT
, winbindd_endgrent
, "ENDGRENT" },
443 { WINBINDD_GETGRENT
, winbindd_getgrent
, "GETGRENT" },
444 { WINBINDD_GETGRLST
, winbindd_getgrent
, "GETGRLST" },
446 /* PAM auth functions */
448 { WINBINDD_PAM_AUTH
, winbindd_pam_auth
, "PAM_AUTH" },
449 { WINBINDD_PAM_AUTH_CRAP
, winbindd_pam_auth_crap
, "AUTH_CRAP" },
450 { WINBINDD_PAM_CHAUTHTOK
, winbindd_pam_chauthtok
, "CHAUTHTOK" },
451 { WINBINDD_PAM_LOGOFF
, winbindd_pam_logoff
, "PAM_LOGOFF" },
452 { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP
, winbindd_pam_chng_pswd_auth_crap
, "CHNG_PSWD_AUTH_CRAP" },
454 /* Enumeration functions */
456 { WINBINDD_LIST_USERS
, winbindd_list_users
, "LIST_USERS" },
457 { WINBINDD_LIST_GROUPS
, winbindd_list_groups
, "LIST_GROUPS" },
458 { WINBINDD_LIST_TRUSTDOM
, winbindd_list_trusted_domains
,
460 { WINBINDD_SHOW_SEQUENCE
, winbindd_show_sequence
, "SHOW_SEQUENCE" },
462 /* SID related functions */
464 { WINBINDD_LOOKUPSID
, winbindd_lookupsid
, "LOOKUPSID" },
465 { WINBINDD_LOOKUPNAME
, winbindd_lookupname
, "LOOKUPNAME" },
466 { WINBINDD_LOOKUPRIDS
, winbindd_lookuprids
, "LOOKUPRIDS" },
468 /* Lookup related functions */
470 { WINBINDD_SID_TO_UID
, winbindd_sid_to_uid
, "SID_TO_UID" },
471 { WINBINDD_SID_TO_GID
, winbindd_sid_to_gid
, "SID_TO_GID" },
472 { WINBINDD_UID_TO_SID
, winbindd_uid_to_sid
, "UID_TO_SID" },
473 { WINBINDD_GID_TO_SID
, winbindd_gid_to_sid
, "GID_TO_SID" },
474 { WINBINDD_ALLOCATE_UID
, winbindd_allocate_uid
, "ALLOCATE_UID" },
475 { WINBINDD_ALLOCATE_GID
, winbindd_allocate_gid
, "ALLOCATE_GID" },
476 { WINBINDD_SET_MAPPING
, winbindd_set_mapping
, "SET_MAPPING" },
477 { WINBINDD_REMOVE_MAPPING
, winbindd_remove_mapping
, "REMOVE_MAPPING" },
478 { WINBINDD_SET_HWM
, winbindd_set_hwm
, "SET_HWMS" },
482 { WINBINDD_CHECK_MACHACC
, winbindd_check_machine_acct
, "CHECK_MACHACC" },
483 { WINBINDD_PING
, winbindd_ping
, "PING" },
484 { WINBINDD_INFO
, winbindd_info
, "INFO" },
485 { WINBINDD_INTERFACE_VERSION
, winbindd_interface_version
,
486 "INTERFACE_VERSION" },
487 { WINBINDD_DOMAIN_NAME
, winbindd_domain_name
, "DOMAIN_NAME" },
488 { WINBINDD_DOMAIN_INFO
, winbindd_domain_info
, "DOMAIN_INFO" },
489 { WINBINDD_NETBIOS_NAME
, winbindd_netbios_name
, "NETBIOS_NAME" },
490 { WINBINDD_PRIV_PIPE_DIR
, winbindd_priv_pipe_dir
,
491 "WINBINDD_PRIV_PIPE_DIR" },
492 { WINBINDD_GETDCNAME
, winbindd_getdcname
, "GETDCNAME" },
493 { WINBINDD_DSGETDCNAME
, winbindd_dsgetdcname
, "DSGETDCNAME" },
495 /* Credential cache access */
496 { WINBINDD_CCACHE_NTLMAUTH
, winbindd_ccache_ntlm_auth
, "NTLMAUTH" },
500 { WINBINDD_WINS_BYNAME
, winbindd_wins_byname
, "WINS_BYNAME" },
501 { WINBINDD_WINS_BYIP
, winbindd_wins_byip
, "WINS_BYIP" },
505 { WINBINDD_NUM_CMDS
, NULL
, "NONE" }
508 static void process_request(struct winbindd_cli_state
*state
)
510 struct winbindd_dispatch_table
*table
= dispatch_table
;
512 ZERO_STRUCT(state
->response
);
514 state
->response
.result
= WINBINDD_PENDING
;
515 state
->response
.length
= sizeof(struct winbindd_response
);
517 state
->mem_ctx
= talloc_init("winbind request");
518 if (state
->mem_ctx
== NULL
)
521 /* Remember who asked us. */
522 state
->pid
= state
->request
->pid
;
524 /* Process command */
526 for (table
= dispatch_table
; table
->fn
; table
++) {
527 if (state
->request
->cmd
== table
->cmd
) {
528 DEBUG(10,("process_request: request fn %s\n",
529 table
->winbindd_cmd_name
));
536 DEBUG(10,("process_request: unknown request fn number %d\n",
537 (int)state
->request
->cmd
));
538 request_error(state
);
543 * A list of file descriptors being monitored by select in the main processing
544 * loop. winbindd_fd_event->handler is called whenever the socket is readable/writable.
547 static struct winbindd_fd_event
*fd_events
= NULL
;
549 void add_fd_event(struct winbindd_fd_event
*ev
)
551 struct winbindd_fd_event
*match
;
553 /* only add unique winbindd_fd_event structs */
555 for (match
=fd_events
; match
; match
=match
->next
) {
557 SMB_ASSERT( match
!= ev
);
564 DLIST_ADD(fd_events
, ev
);
567 void remove_fd_event(struct winbindd_fd_event
*ev
)
569 DLIST_REMOVE(fd_events
, ev
);
573 * Handler for winbindd_fd_events to complete a read/write request, set up by
574 * setup_async_read/setup_async_write.
577 static void rw_callback(struct winbindd_fd_event
*event
, int flags
)
582 todo
= event
->length
- event
->done
;
584 if (event
->flags
& EVENT_FD_WRITE
) {
585 SMB_ASSERT(flags
== EVENT_FD_WRITE
);
586 done
= sys_write(event
->fd
,
587 &((char *)event
->data
)[event
->done
],
592 event
->finished(event
->private_data
, False
);
597 if (event
->flags
& EVENT_FD_READ
) {
598 SMB_ASSERT(flags
== EVENT_FD_READ
);
599 done
= sys_read(event
->fd
, &((char *)event
->data
)[event
->done
],
604 event
->finished(event
->private_data
, False
);
611 if (event
->done
== event
->length
) {
613 event
->finished(event
->private_data
, True
);
618 * Request an async read/write on a winbindd_fd_event structure. (*finished) is called
619 * when the request is completed or an error had occurred.
622 void setup_async_read(struct winbindd_fd_event
*event
, void *data
, size_t length
,
623 void (*finished
)(void *private_data
, bool success
),
626 SMB_ASSERT(event
->flags
== 0);
628 event
->length
= length
;
630 event
->handler
= rw_callback
;
631 event
->finished
= finished
;
632 event
->private_data
= private_data
;
633 event
->flags
= EVENT_FD_READ
;
636 void setup_async_write(struct winbindd_fd_event
*event
, void *data
, size_t length
,
637 void (*finished
)(void *private_data
, bool success
),
640 SMB_ASSERT(event
->flags
== 0);
642 event
->length
= length
;
644 event
->handler
= rw_callback
;
645 event
->finished
= finished
;
646 event
->private_data
= private_data
;
647 event
->flags
= EVENT_FD_WRITE
;
651 * This is the main event loop of winbind requests. It goes through a
652 * state-machine of 3 read/write requests, 4 if you have extra data to send.
654 * An idle winbind client has a read request of 4 bytes outstanding,
655 * finalizing function is request_len_recv, checking the length. request_recv
656 * then processes the packet. The processing function then at some point has
657 * to call request_finished which schedules sending the response.
660 static void request_finished(struct winbindd_cli_state
*state
);
662 static void winbind_client_request_read(struct tevent_req
*req
);
663 static void winbind_client_response_written(struct tevent_req
*req
);
665 static void request_finished(struct winbindd_cli_state
*state
)
667 struct tevent_req
*req
;
669 TALLOC_FREE(state
->request
);
671 req
= wb_resp_write_send(state
, winbind_event_context(),
672 state
->out_queue
, state
->sock
,
675 state
->finished
= true;
678 tevent_req_set_callback(req
, winbind_client_response_written
, state
);
681 static void winbind_client_response_written(struct tevent_req
*req
)
683 struct winbindd_cli_state
*state
= tevent_req_callback_data(
684 req
, struct winbindd_cli_state
);
688 ret
= wb_resp_write_recv(req
, &err
);
691 DEBUG(2, ("Could not write response to client: %s\n",
693 state
->finished
= true;
697 TALLOC_FREE(state
->mem_ctx
);
699 req
= wb_req_read_send(state
, winbind_event_context(), state
->sock
,
700 WINBINDD_MAX_EXTRA_DATA
);
702 state
->finished
= true;
705 tevent_req_set_callback(req
, winbind_client_request_read
, state
);
708 void request_error(struct winbindd_cli_state
*state
)
710 SMB_ASSERT(state
->response
.result
== WINBINDD_PENDING
);
711 state
->response
.result
= WINBINDD_ERROR
;
712 request_finished(state
);
715 void request_ok(struct winbindd_cli_state
*state
)
717 SMB_ASSERT(state
->response
.result
== WINBINDD_PENDING
);
718 state
->response
.result
= WINBINDD_OK
;
719 request_finished(state
);
722 /* Process a new connection by adding it to the client connection list */
724 static void new_connection(int listen_sock
, bool privileged
)
726 struct sockaddr_un sunaddr
;
727 struct winbindd_cli_state
*state
;
728 struct tevent_req
*req
;
732 /* Accept connection */
734 len
= sizeof(sunaddr
);
737 sock
= accept(listen_sock
, (struct sockaddr
*)(void *)&sunaddr
,
739 } while (sock
== -1 && errno
== EINTR
);
744 DEBUG(6,("accepted socket %d\n", sock
));
746 /* Create new connection structure */
748 if ((state
= TALLOC_ZERO_P(NULL
, struct winbindd_cli_state
)) == NULL
) {
755 state
->out_queue
= tevent_queue_create(state
, "winbind client reply");
756 if (state
->out_queue
== NULL
) {
762 state
->last_access
= time(NULL
);
764 state
->privileged
= privileged
;
766 req
= wb_req_read_send(state
, winbind_event_context(), state
->sock
,
767 WINBINDD_MAX_EXTRA_DATA
);
773 tevent_req_set_callback(req
, winbind_client_request_read
, state
);
775 /* Add to connection list */
777 winbindd_add_client(state
);
780 static void winbind_client_request_read(struct tevent_req
*req
)
782 struct winbindd_cli_state
*state
= tevent_req_callback_data(
783 req
, struct winbindd_cli_state
);
787 ret
= wb_req_read_recv(req
, state
, &state
->request
, &err
);
789 DEBUG(2, ("Could not read client request: %s\n",
791 state
->finished
= true;
794 process_request(state
);
797 /* Remove a client connection from client connection list */
799 static void remove_client(struct winbindd_cli_state
*state
)
804 /* It's a dead client - hold a funeral */
810 /* tell client, we are closing ... */
811 nwritten
= write(state
->sock
, &c
, sizeof(c
));
812 if (nwritten
== -1) {
814 * ignore EPIPE error here, because the other end might
815 * have already closed the socket.
817 if (errno
!= EPIPE
) {
818 DEBUG(2, ("final write to client failed: %s\n",
827 /* Free any getent state */
829 free_getent_state(state
->getpwent_state
);
830 free_getent_state(state
->getgrent_state
);
832 TALLOC_FREE(state
->mem_ctx
);
834 /* Remove from list and free */
836 winbindd_remove_client(state
);
840 /* Shutdown client connection which has been idle for the longest time */
842 static bool remove_idle_client(void)
844 struct winbindd_cli_state
*state
, *remove_state
= NULL
;
845 time_t last_access
= 0;
848 for (state
= winbindd_client_list(); state
; state
= state
->next
) {
849 if (state
->response
.result
!= WINBINDD_PENDING
&&
850 !state
->getpwent_state
&& !state
->getgrent_state
) {
852 if (!last_access
|| state
->last_access
< last_access
) {
853 last_access
= state
->last_access
;
854 remove_state
= state
;
860 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
861 nidle
, remove_state
->sock
, (unsigned int)remove_state
->pid
));
862 remove_client(remove_state
);
869 struct winbindd_listen_state
{
872 struct tevent_fd
*fde
;
875 static void winbindd_listen_fde_handler(struct tevent_context
*ev
,
876 struct tevent_fd
*fde
,
880 struct winbindd_listen_state
*s
= talloc_get_type_abort(private_data
,
881 struct winbindd_listen_state
);
883 while (winbindd_num_clients() >
884 WINBINDD_MAX_SIMULTANEOUS_CLIENTS
- 1) {
885 DEBUG(5,("winbindd: Exceeding %d client "
886 "connections, removing idle "
888 WINBINDD_MAX_SIMULTANEOUS_CLIENTS
));
889 if (!remove_idle_client()) {
890 DEBUG(0,("winbindd: Exceeding %d "
891 "client connections, no idle "
892 "connection found\n",
893 WINBINDD_MAX_SIMULTANEOUS_CLIENTS
));
897 new_connection(s
->fd
, s
->privileged
);
900 static bool winbindd_setup_listeners(void)
902 struct winbindd_listen_state
*pub_state
= NULL
;
903 struct winbindd_listen_state
*priv_state
= NULL
;
905 pub_state
= talloc(winbind_event_context(),
906 struct winbindd_listen_state
);
911 pub_state
->privileged
= false;
912 pub_state
->fd
= open_winbindd_socket();
913 if (pub_state
->fd
== -1) {
917 pub_state
->fde
= tevent_add_fd(winbind_event_context(),
918 pub_state
, pub_state
->fd
,
920 winbindd_listen_fde_handler
,
922 if (!pub_state
->fde
) {
923 close(pub_state
->fd
);
926 tevent_fd_set_auto_close(pub_state
->fde
);
928 priv_state
= talloc(winbind_event_context(),
929 struct winbindd_listen_state
);
934 priv_state
->privileged
= true;
935 priv_state
->fd
= open_winbindd_priv_socket();
936 if (priv_state
->fd
== -1) {
940 priv_state
->fde
= tevent_add_fd(winbind_event_context(),
941 priv_state
, priv_state
->fd
,
943 winbindd_listen_fde_handler
,
945 if (!priv_state
->fde
) {
946 close(priv_state
->fd
);
949 tevent_fd_set_auto_close(priv_state
->fde
);
953 TALLOC_FREE(pub_state
);
954 TALLOC_FREE(priv_state
);
958 /* Process incoming clients on listen_sock. We use a tricky non-blocking,
959 non-forking, non-threaded model which allows us to handle many
960 simultaneous connections while remaining impervious to many denial of
963 static void process_loop(void)
965 struct winbindd_fd_event
*ev
;
967 int maxfd
= 0, selret
;
968 struct timeval timeout
, ev_timeout
;
970 run_events(winbind_event_context(), 0, NULL
, NULL
);
972 /* Initialise fd lists for select() */
977 timeout
.tv_sec
= WINBINDD_ESTABLISH_LOOP
;
980 /* Check for any event timeouts. */
985 event_add_to_select_args(winbind_event_context(), &now
,
986 &r_fds
, &w_fds
, &ev_timeout
, &maxfd
);
988 if (get_timed_events_timeout(winbind_event_context(), &ev_timeout
)) {
989 timeout
= timeval_min(&timeout
, &ev_timeout
);
992 for (ev
= fd_events
; ev
; ev
= ev
->next
) {
993 if (ev
->flags
& EVENT_FD_READ
) {
994 FD_SET(ev
->fd
, &r_fds
);
995 maxfd
= MAX(ev
->fd
, maxfd
);
997 if (ev
->flags
& EVENT_FD_WRITE
) {
998 FD_SET(ev
->fd
, &w_fds
);
999 maxfd
= MAX(ev
->fd
, maxfd
);
1005 selret
= sys_select(maxfd
+ 1, &r_fds
, &w_fds
, NULL
, &timeout
);
1012 if (errno
== EINTR
) {
1016 /* Select error, something is badly wrong */
1024 run_events(winbind_event_context(), selret
, &r_fds
, &w_fds
);
1027 while (ev
!= NULL
) {
1028 struct winbindd_fd_event
*next
= ev
->next
;
1030 if (FD_ISSET(ev
->fd
, &r_fds
))
1031 flags
|= EVENT_FD_READ
;
1032 if (FD_ISSET(ev
->fd
, &w_fds
))
1033 flags
|= EVENT_FD_WRITE
;
1035 ev
->handler(ev
, flags
);
1043 run_events(winbind_event_context(), selret
, &r_fds
, &w_fds
);
1046 winbindd_check_cache_size(time(NULL
));
1050 bool winbindd_use_idmap_cache(void)
1052 return !opt_nocache
;
1055 bool winbindd_use_cache(void)
1057 return !opt_nocache
;
1062 int main(int argc
, char **argv
, char **envp
)
1064 static bool is_daemon
= False
;
1065 static bool Fork
= True
;
1066 static bool log_stdout
= False
;
1067 static bool no_process_group
= False
;
1071 OPT_NO_PROCESS_GROUP
,
1074 struct poptOption long_options
[] = {
1076 { "stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
1077 { "foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Daemon in foreground mode" },
1078 { "no-process-group", 0, POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
1079 { "daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
1080 { "interactive", 'i', POPT_ARG_NONE
, NULL
, 'i', "Interactive mode" },
1081 { "no-caching", 'n', POPT_ARG_NONE
, NULL
, 'n', "Disable caching" },
1087 TALLOC_CTX
*frame
= talloc_stackframe();
1089 /* glibc (?) likes to print "User defined signal 1" and exit if a
1090 SIGUSR[12] is received before a handler is installed */
1092 CatchSignal(SIGUSR1
, SIG_IGN
);
1093 CatchSignal(SIGUSR2
, SIG_IGN
);
1095 fault_setup((void (*)(void *))fault_quit
);
1096 dump_core_setup("winbindd");
1100 /* Initialise for running in non-root mode */
1104 set_remote_machine_name("winbindd", False
);
1106 /* Set environment variable so we don't recursively call ourselves.
1107 This may also be useful interactively. */
1109 if ( !winbind_off() ) {
1110 DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
1114 /* Initialise samba/rpc client stuff */
1116 pc
= poptGetContext("winbindd", argc
, (const char **)argv
, long_options
, 0);
1118 while ((opt
= poptGetNextOpt(pc
)) != -1) {
1120 /* Don't become a daemon */
1132 case OPT_NO_PROCESS_GROUP
:
1133 no_process_group
= true;
1135 case OPT_LOG_STDOUT
:
1142 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
1143 poptBadOption(pc
, 0), poptStrerror(opt
));
1144 poptPrintUsage(pc
, stderr
, 0);
1149 if (is_daemon
&& interactive
) {
1150 d_fprintf(stderr
,"\nERROR: "
1151 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
1152 poptPrintUsage(pc
, stderr
, 0);
1156 if (log_stdout
&& Fork
) {
1157 d_fprintf(stderr
, "\nERROR: "
1158 "Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n\n");
1159 poptPrintUsage(pc
, stderr
, 0);
1163 poptFreeContext(pc
);
1165 if (!override_logfile
) {
1167 if (asprintf(&lfile
,"%s/log.winbindd",
1168 get_dyn_LOGFILEBASE()) > 0) {
1169 lp_set_logfile(lfile
);
1173 setup_logging("winbindd", log_stdout
);
1176 DEBUG(0,("winbindd version %s started.\n", samba_version_string()));
1177 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1179 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1180 DEBUG(0, ("error opening config file\n"));
1184 /* Initialise messaging system */
1186 if (winbind_messaging_context() == NULL
) {
1190 if (!reload_services_file(NULL
)) {
1191 DEBUG(0, ("error opening config file\n"));
1195 if (!directory_exist(lp_lockdir())) {
1196 mkdir(lp_lockdir(), 0755);
1206 if (!secrets_init()) {
1208 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1212 /* Enable netbios namecache */
1216 /* Unblock all signals we are interested in as they may have been
1217 blocked by the parent process. */
1219 BlockSignals(False
, SIGINT
);
1220 BlockSignals(False
, SIGQUIT
);
1221 BlockSignals(False
, SIGTERM
);
1222 BlockSignals(False
, SIGUSR1
);
1223 BlockSignals(False
, SIGUSR2
);
1224 BlockSignals(False
, SIGHUP
);
1225 BlockSignals(False
, SIGCHLD
);
1228 become_daemon(Fork
, no_process_group
);
1230 pidfile_create("winbindd");
1234 * If we're interactive we want to set our own process group for
1235 * signal management.
1237 if (interactive
&& !no_process_group
)
1238 setpgid( (pid_t
)0, (pid_t
)0);
1243 /* Don't use winbindd_reinit_after_fork here as
1244 * we're just starting up and haven't created any
1245 * winbindd-specific resources we must free yet. JRA.
1248 if (!NT_STATUS_IS_OK(reinit_after_fork(winbind_messaging_context(),
1249 winbind_event_context(),
1251 DEBUG(0,("reinit_after_fork() failed\n"));
1255 /* Setup signal handlers */
1257 if (!winbindd_setup_sig_term_handler(true))
1259 if (!winbindd_setup_sig_hup_handler(NULL
))
1261 if (!winbindd_setup_sig_chld_handler())
1263 if (!winbindd_setup_sig_usr2_handler())
1266 CatchSignal(SIGPIPE
, SIG_IGN
); /* Ignore sigpipe */
1269 * Ensure all cache and idmap caches are consistent
1270 * and initialized before we startup.
1272 if (!winbindd_cache_validate_and_initialize()) {
1276 /* get broadcast messages */
1277 claim_connection(NULL
,"",FLAG_MSG_GENERAL
|FLAG_MSG_DBWRAP
);
1279 /* React on 'smbcontrol winbindd reload-config' in the same way
1280 as to SIGHUP signal */
1281 messaging_register(winbind_messaging_context(), NULL
,
1282 MSG_SMB_CONF_UPDATED
, msg_reload_services
);
1283 messaging_register(winbind_messaging_context(), NULL
,
1284 MSG_SHUTDOWN
, msg_shutdown
);
1286 /* Handle online/offline messages. */
1287 messaging_register(winbind_messaging_context(), NULL
,
1288 MSG_WINBIND_OFFLINE
, winbind_msg_offline
);
1289 messaging_register(winbind_messaging_context(), NULL
,
1290 MSG_WINBIND_ONLINE
, winbind_msg_online
);
1291 messaging_register(winbind_messaging_context(), NULL
,
1292 MSG_WINBIND_ONLINESTATUS
, winbind_msg_onlinestatus
);
1294 messaging_register(winbind_messaging_context(), NULL
,
1295 MSG_DUMP_EVENT_LIST
, winbind_msg_dump_event_list
);
1297 messaging_register(winbind_messaging_context(), NULL
,
1298 MSG_WINBIND_VALIDATE_CACHE
,
1299 winbind_msg_validate_cache
);
1301 messaging_register(winbind_messaging_context(), NULL
,
1302 MSG_WINBIND_DUMP_DOMAIN_LIST
,
1303 winbind_msg_dump_domain_list
);
1305 /* Register handler for MSG_DEBUG. */
1306 messaging_register(winbind_messaging_context(), NULL
,
1310 netsamlogon_cache_init(); /* Non-critical */
1312 /* clear the cached list of trusted domains */
1316 if (!init_domain_list()) {
1317 DEBUG(0,("unable to initialize domain list\n"));
1322 init_locator_child();
1324 smb_nscd_flush_user_cache();
1325 smb_nscd_flush_group_cache();
1327 /* setup listen sockets */
1329 if (!winbindd_setup_listeners()) {
1330 DEBUG(0,("winbindd_setup_listeners() failed\n"));
1335 /* Loop waiting for requests */
1337 struct winbindd_cli_state
*state
;
1339 frame
= talloc_stackframe();
1341 /* refresh the trusted domain cache */
1343 rescan_trusted_domains();
1345 /* Dispose of client connection if it is marked as
1347 state
= winbindd_client_list();
1349 struct winbindd_cli_state
*next
= state
->next
;
1351 if (state
->finished
) {
1352 remove_client(state
);