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/>.
26 #include "popt_common.h"
28 #include "nsswitch/winbind_client.h"
29 #include "nsswitch/wb_reqtrans.h"
31 #include "../librpc/gen_ndr/srv_lsa.h"
32 #include "../librpc/gen_ndr/srv_samr.h"
35 #include "lib/addrchange.h"
41 #define DBGC_CLASS DBGC_WINBIND
43 static bool client_is_idle(struct winbindd_cli_state
*state
);
44 static void remove_client(struct winbindd_cli_state
*state
);
46 static bool opt_nocache
= False
;
47 static bool interactive
= False
;
49 extern bool override_logfile
;
51 struct messaging_context
*winbind_messaging_context(void)
53 struct messaging_context
*msg_ctx
= server_messaging_context();
54 if (likely(msg_ctx
!= NULL
)) {
57 smb_panic("Could not init winbindd's 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 (%s)\n",
114 (unsigned long)tmp
->pid
, tmp
->sock
,
115 client_is_idle(tmp
) ? "idle" : "active"));
120 /* Flush client cache */
122 static void flush_caches(void)
124 /* We need to invalidate cached user list entries on a SIGHUP
125 otherwise cached access denied errors due to restrict anonymous
126 hang around until the sequence number changes. */
128 if (!wcache_invalidate_cache()) {
129 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
130 if (!winbindd_cache_validate_and_initialize()) {
136 static void flush_caches_noinit(void)
139 * We need to invalidate cached user list entries on a SIGHUP
140 * otherwise cached access denied errors due to restrict anonymous
141 * hang around until the sequence number changes.
143 * Skip uninitialized domains when flush cache.
144 * If domain is not initialized, it means it is never
145 * used or never become online. look, wcache_invalidate_cache()
146 * -> get_cache() -> init_dc_connection(). It causes a lot of traffic
147 * for unused domains and large traffic for primay domain's DC if there
151 if (!wcache_invalidate_cache_noinit()) {
152 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
153 if (!winbindd_cache_validate_and_initialize()) {
159 /* Handle the signal by unlinking socket and exiting */
161 static void terminate(bool is_parent
)
164 /* When parent goes away we should
165 * remove the socket file. Not so
166 * when children terminate.
170 if (asprintf(&path
, "%s/%s",
171 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME
) > 0) {
179 trustdom_cache_shutdown();
181 gencache_stabilize();
185 TALLOC_CTX
*mem_ctx
= talloc_init("end_description");
186 char *description
= talloc_describe_all(mem_ctx
);
188 DEBUG(3, ("tallocs left:\n%s\n", description
));
189 talloc_destroy(mem_ctx
);
194 serverid_deregister(procid_self());
201 static void winbindd_sig_term_handler(struct tevent_context
*ev
,
202 struct tevent_signal
*se
,
208 bool *is_parent
= talloc_get_type_abort(private_data
, bool);
210 DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
211 signum
, (int)*is_parent
));
212 terminate(*is_parent
);
215 bool winbindd_setup_sig_term_handler(bool parent
)
217 struct tevent_signal
*se
;
220 is_parent
= talloc(winbind_event_context(), bool);
227 se
= tevent_add_signal(winbind_event_context(),
230 winbindd_sig_term_handler
,
233 DEBUG(0,("failed to setup SIGTERM handler"));
234 talloc_free(is_parent
);
238 se
= tevent_add_signal(winbind_event_context(),
241 winbindd_sig_term_handler
,
244 DEBUG(0,("failed to setup SIGINT handler"));
245 talloc_free(is_parent
);
249 se
= tevent_add_signal(winbind_event_context(),
252 winbindd_sig_term_handler
,
255 DEBUG(0,("failed to setup SIGINT handler"));
256 talloc_free(is_parent
);
263 static void winbindd_sig_hup_handler(struct tevent_context
*ev
,
264 struct tevent_signal
*se
,
270 const char *file
= (const char *)private_data
;
272 DEBUG(1,("Reloading services after SIGHUP\n"));
273 flush_caches_noinit();
274 reload_services_file(file
);
277 bool winbindd_setup_sig_hup_handler(const char *lfile
)
279 struct tevent_signal
*se
;
283 file
= talloc_strdup(winbind_event_context(),
290 se
= tevent_add_signal(winbind_event_context(),
291 winbind_event_context(),
293 winbindd_sig_hup_handler
,
302 static void winbindd_sig_chld_handler(struct tevent_context
*ev
,
303 struct tevent_signal
*se
,
311 while ((pid
= sys_waitpid(-1, NULL
, WNOHANG
)) > 0) {
312 winbind_child_died(pid
);
316 static bool winbindd_setup_sig_chld_handler(void)
318 struct tevent_signal
*se
;
320 se
= tevent_add_signal(winbind_event_context(),
321 winbind_event_context(),
323 winbindd_sig_chld_handler
,
332 static void winbindd_sig_usr2_handler(struct tevent_context
*ev
,
333 struct tevent_signal
*se
,
342 static bool winbindd_setup_sig_usr2_handler(void)
344 struct tevent_signal
*se
;
346 se
= tevent_add_signal(winbind_event_context(),
347 winbind_event_context(),
349 winbindd_sig_usr2_handler
,
358 /* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
359 static void msg_reload_services(struct messaging_context
*msg
,
362 struct server_id server_id
,
365 /* Flush various caches */
367 reload_services_file((const char *) private_data
);
370 /* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
371 static void msg_shutdown(struct messaging_context
*msg
,
374 struct server_id server_id
,
377 /* only the parent waits for this message */
378 DEBUG(0,("Got shutdown message\n"));
383 static void winbind_msg_validate_cache(struct messaging_context
*msg_ctx
,
386 struct server_id server_id
,
393 DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
397 * call the validation code from a child:
398 * so we don't block the main winbindd and the validation
399 * code can safely use fork/waitpid...
401 child_pid
= sys_fork();
403 if (child_pid
== -1) {
404 DEBUG(1, ("winbind_msg_validate_cache: Could not fork: %s\n",
409 if (child_pid
!= 0) {
411 DEBUG(5, ("winbind_msg_validate_cache: child created with "
412 "pid %d.\n", (int)child_pid
));
418 status
= winbindd_reinit_after_fork(NULL
, NULL
);
419 if (!NT_STATUS_IS_OK(status
)) {
420 DEBUG(1, ("winbindd_reinit_after_fork failed: %s\n",
425 /* install default SIGCHLD handler: validation code uses fork/waitpid */
426 CatchSignal(SIGCHLD
, SIG_DFL
);
428 ret
= (uint8
)winbindd_validate_cache_nobackup();
429 DEBUG(10, ("winbindd_msg_validata_cache: got return value %d\n", ret
));
430 messaging_send_buf(msg_ctx
, server_id
, MSG_WINBIND_VALIDATE_CACHE
, &ret
,
435 static struct winbindd_dispatch_table
{
436 enum winbindd_cmd cmd
;
437 void (*fn
)(struct winbindd_cli_state
*state
);
438 const char *winbindd_cmd_name
;
439 } dispatch_table
[] = {
441 /* Enumeration functions */
443 { WINBINDD_LIST_TRUSTDOM
, winbindd_list_trusted_domains
,
448 { WINBINDD_INFO
, winbindd_info
, "INFO" },
449 { WINBINDD_INTERFACE_VERSION
, winbindd_interface_version
,
450 "INTERFACE_VERSION" },
451 { WINBINDD_DOMAIN_NAME
, winbindd_domain_name
, "DOMAIN_NAME" },
452 { WINBINDD_DOMAIN_INFO
, winbindd_domain_info
, "DOMAIN_INFO" },
453 { WINBINDD_DC_INFO
, winbindd_dc_info
, "DC_INFO" },
454 { WINBINDD_NETBIOS_NAME
, winbindd_netbios_name
, "NETBIOS_NAME" },
455 { WINBINDD_PRIV_PIPE_DIR
, winbindd_priv_pipe_dir
,
456 "WINBINDD_PRIV_PIPE_DIR" },
458 /* Credential cache access */
459 { WINBINDD_CCACHE_NTLMAUTH
, winbindd_ccache_ntlm_auth
, "NTLMAUTH" },
460 { WINBINDD_CCACHE_SAVE
, winbindd_ccache_save
, "CCACHE_SAVE" },
464 { WINBINDD_WINS_BYNAME
, winbindd_wins_byname
, "WINS_BYNAME" },
465 { WINBINDD_WINS_BYIP
, winbindd_wins_byip
, "WINS_BYIP" },
469 { WINBINDD_NUM_CMDS
, NULL
, "NONE" }
472 struct winbindd_async_dispatch_table
{
473 enum winbindd_cmd cmd
;
474 const char *cmd_name
;
475 struct tevent_req
*(*send_req
)(TALLOC_CTX
*mem_ctx
,
476 struct tevent_context
*ev
,
477 struct winbindd_cli_state
*cli
,
478 struct winbindd_request
*request
);
479 NTSTATUS (*recv_req
)(struct tevent_req
*req
,
480 struct winbindd_response
*presp
);
483 static struct winbindd_async_dispatch_table async_nonpriv_table
[] = {
484 { WINBINDD_PING
, "PING",
485 wb_ping_send
, wb_ping_recv
},
486 { WINBINDD_LOOKUPSID
, "LOOKUPSID",
487 winbindd_lookupsid_send
, winbindd_lookupsid_recv
},
488 { WINBINDD_LOOKUPSIDS
, "LOOKUPSIDS",
489 winbindd_lookupsids_send
, winbindd_lookupsids_recv
},
490 { WINBINDD_LOOKUPNAME
, "LOOKUPNAME",
491 winbindd_lookupname_send
, winbindd_lookupname_recv
},
492 { WINBINDD_SID_TO_UID
, "SID_TO_UID",
493 winbindd_sid_to_uid_send
, winbindd_sid_to_uid_recv
},
494 { WINBINDD_SID_TO_GID
, "SID_TO_GID",
495 winbindd_sid_to_gid_send
, winbindd_sid_to_gid_recv
},
496 { WINBINDD_UID_TO_SID
, "UID_TO_SID",
497 winbindd_uid_to_sid_send
, winbindd_uid_to_sid_recv
},
498 { WINBINDD_GID_TO_SID
, "GID_TO_SID",
499 winbindd_gid_to_sid_send
, winbindd_gid_to_sid_recv
},
500 { WINBINDD_SIDS_TO_XIDS
, "SIDS_TO_XIDS",
501 winbindd_sids_to_xids_send
, winbindd_sids_to_xids_recv
},
502 { WINBINDD_GETPWSID
, "GETPWSID",
503 winbindd_getpwsid_send
, winbindd_getpwsid_recv
},
504 { WINBINDD_GETPWNAM
, "GETPWNAM",
505 winbindd_getpwnam_send
, winbindd_getpwnam_recv
},
506 { WINBINDD_GETPWUID
, "GETPWUID",
507 winbindd_getpwuid_send
, winbindd_getpwuid_recv
},
508 { WINBINDD_GETSIDALIASES
, "GETSIDALIASES",
509 winbindd_getsidaliases_send
, winbindd_getsidaliases_recv
},
510 { WINBINDD_GETUSERDOMGROUPS
, "GETUSERDOMGROUPS",
511 winbindd_getuserdomgroups_send
, winbindd_getuserdomgroups_recv
},
512 { WINBINDD_GETGROUPS
, "GETGROUPS",
513 winbindd_getgroups_send
, winbindd_getgroups_recv
},
514 { WINBINDD_SHOW_SEQUENCE
, "SHOW_SEQUENCE",
515 winbindd_show_sequence_send
, winbindd_show_sequence_recv
},
516 { WINBINDD_GETGRGID
, "GETGRGID",
517 winbindd_getgrgid_send
, winbindd_getgrgid_recv
},
518 { WINBINDD_GETGRNAM
, "GETGRNAM",
519 winbindd_getgrnam_send
, winbindd_getgrnam_recv
},
520 { WINBINDD_GETUSERSIDS
, "GETUSERSIDS",
521 winbindd_getusersids_send
, winbindd_getusersids_recv
},
522 { WINBINDD_LOOKUPRIDS
, "LOOKUPRIDS",
523 winbindd_lookuprids_send
, winbindd_lookuprids_recv
},
524 { WINBINDD_SETPWENT
, "SETPWENT",
525 winbindd_setpwent_send
, winbindd_setpwent_recv
},
526 { WINBINDD_GETPWENT
, "GETPWENT",
527 winbindd_getpwent_send
, winbindd_getpwent_recv
},
528 { WINBINDD_ENDPWENT
, "ENDPWENT",
529 winbindd_endpwent_send
, winbindd_endpwent_recv
},
530 { WINBINDD_DSGETDCNAME
, "DSGETDCNAME",
531 winbindd_dsgetdcname_send
, winbindd_dsgetdcname_recv
},
532 { WINBINDD_GETDCNAME
, "GETDCNAME",
533 winbindd_getdcname_send
, winbindd_getdcname_recv
},
534 { WINBINDD_SETGRENT
, "SETGRENT",
535 winbindd_setgrent_send
, winbindd_setgrent_recv
},
536 { WINBINDD_GETGRENT
, "GETGRENT",
537 winbindd_getgrent_send
, winbindd_getgrent_recv
},
538 { WINBINDD_ENDGRENT
, "ENDGRENT",
539 winbindd_endgrent_send
, winbindd_endgrent_recv
},
540 { WINBINDD_LIST_USERS
, "LIST_USERS",
541 winbindd_list_users_send
, winbindd_list_users_recv
},
542 { WINBINDD_LIST_GROUPS
, "LIST_GROUPS",
543 winbindd_list_groups_send
, winbindd_list_groups_recv
},
544 { WINBINDD_CHECK_MACHACC
, "CHECK_MACHACC",
545 winbindd_check_machine_acct_send
, winbindd_check_machine_acct_recv
},
546 { WINBINDD_PING_DC
, "PING_DC",
547 winbindd_ping_dc_send
, winbindd_ping_dc_recv
},
548 { WINBINDD_PAM_AUTH
, "PAM_AUTH",
549 winbindd_pam_auth_send
, winbindd_pam_auth_recv
},
550 { WINBINDD_PAM_LOGOFF
, "PAM_LOGOFF",
551 winbindd_pam_logoff_send
, winbindd_pam_logoff_recv
},
552 { WINBINDD_PAM_CHAUTHTOK
, "PAM_CHAUTHTOK",
553 winbindd_pam_chauthtok_send
, winbindd_pam_chauthtok_recv
},
554 { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP
, "PAM_CHNG_PSWD_AUTH_CRAP",
555 winbindd_pam_chng_pswd_auth_crap_send
,
556 winbindd_pam_chng_pswd_auth_crap_recv
},
558 { 0, NULL
, NULL
, NULL
}
561 static struct winbindd_async_dispatch_table async_priv_table
[] = {
562 { WINBINDD_ALLOCATE_UID
, "ALLOCATE_UID",
563 winbindd_allocate_uid_send
, winbindd_allocate_uid_recv
},
564 { WINBINDD_ALLOCATE_GID
, "ALLOCATE_GID",
565 winbindd_allocate_gid_send
, winbindd_allocate_gid_recv
},
566 { WINBINDD_CHANGE_MACHACC
, "CHANGE_MACHACC",
567 winbindd_change_machine_acct_send
, winbindd_change_machine_acct_recv
},
568 { WINBINDD_PAM_AUTH_CRAP
, "PAM_AUTH_CRAP",
569 winbindd_pam_auth_crap_send
, winbindd_pam_auth_crap_recv
},
571 { 0, NULL
, NULL
, NULL
}
574 static void wb_request_done(struct tevent_req
*req
);
576 static void process_request(struct winbindd_cli_state
*state
)
578 struct winbindd_dispatch_table
*table
= dispatch_table
;
579 struct winbindd_async_dispatch_table
*atable
;
581 state
->mem_ctx
= talloc_named(state
, 0, "winbind request");
582 if (state
->mem_ctx
== NULL
)
585 /* Remember who asked us. */
586 state
->pid
= state
->request
->pid
;
588 state
->cmd_name
= "unknown request";
589 state
->recv_fn
= NULL
;
591 /* Process command */
593 for (atable
= async_nonpriv_table
; atable
->send_req
; atable
+= 1) {
594 if (state
->request
->cmd
== atable
->cmd
) {
599 if ((atable
->send_req
== NULL
) && state
->privileged
) {
600 for (atable
= async_priv_table
; atable
->send_req
;
602 if (state
->request
->cmd
== atable
->cmd
) {
608 if (atable
->send_req
!= NULL
) {
609 struct tevent_req
*req
;
611 state
->cmd_name
= atable
->cmd_name
;
612 state
->recv_fn
= atable
->recv_req
;
614 DEBUG(10, ("process_request: Handling async request %d:%s\n",
615 (int)state
->pid
, state
->cmd_name
));
617 req
= atable
->send_req(state
->mem_ctx
, winbind_event_context(),
618 state
, state
->request
);
620 DEBUG(0, ("process_request: atable->send failed for "
621 "%s\n", atable
->cmd_name
));
622 request_error(state
);
625 tevent_req_set_callback(req
, wb_request_done
, state
);
629 state
->response
= talloc_zero(state
->mem_ctx
,
630 struct winbindd_response
);
631 if (state
->response
== NULL
) {
632 DEBUG(10, ("talloc failed\n"));
633 remove_client(state
);
636 state
->response
->result
= WINBINDD_PENDING
;
637 state
->response
->length
= sizeof(struct winbindd_response
);
639 for (table
= dispatch_table
; table
->fn
; table
++) {
640 if (state
->request
->cmd
== table
->cmd
) {
641 DEBUG(10,("process_request: request fn %s\n",
642 table
->winbindd_cmd_name
));
643 state
->cmd_name
= table
->winbindd_cmd_name
;
650 DEBUG(10,("process_request: unknown request fn number %d\n",
651 (int)state
->request
->cmd
));
652 request_error(state
);
656 static void wb_request_done(struct tevent_req
*req
)
658 struct winbindd_cli_state
*state
= tevent_req_callback_data(
659 req
, struct winbindd_cli_state
);
662 state
->response
= talloc_zero(state
->mem_ctx
,
663 struct winbindd_response
);
664 if (state
->response
== NULL
) {
665 DEBUG(0, ("wb_request_done[%d:%s]: talloc_zero failed - removing client\n",
666 (int)state
->pid
, state
->cmd_name
));
667 remove_client(state
);
670 state
->response
->result
= WINBINDD_PENDING
;
671 state
->response
->length
= sizeof(struct winbindd_response
);
673 status
= state
->recv_fn(req
, state
->response
);
676 DEBUG(10,("wb_request_done[%d:%s]: %s\n",
677 (int)state
->pid
, state
->cmd_name
, nt_errstr(status
)));
679 if (!NT_STATUS_IS_OK(status
)) {
680 request_error(state
);
687 * This is the main event loop of winbind requests. It goes through a
688 * state-machine of 3 read/write requests, 4 if you have extra data to send.
690 * An idle winbind client has a read request of 4 bytes outstanding,
691 * finalizing function is request_len_recv, checking the length. request_recv
692 * then processes the packet. The processing function then at some point has
693 * to call request_finished which schedules sending the response.
696 static void request_finished(struct winbindd_cli_state
*state
);
698 static void winbind_client_request_read(struct tevent_req
*req
);
699 static void winbind_client_response_written(struct tevent_req
*req
);
701 static void request_finished(struct winbindd_cli_state
*state
)
703 struct tevent_req
*req
;
705 TALLOC_FREE(state
->request
);
707 req
= wb_resp_write_send(state
, winbind_event_context(),
708 state
->out_queue
, state
->sock
,
711 DEBUG(10,("request_finished[%d:%s]: wb_resp_write_send() failed\n",
712 (int)state
->pid
, state
->cmd_name
));
713 remove_client(state
);
716 tevent_req_set_callback(req
, winbind_client_response_written
, state
);
719 static void winbind_client_response_written(struct tevent_req
*req
)
721 struct winbindd_cli_state
*state
= tevent_req_callback_data(
722 req
, struct winbindd_cli_state
);
726 ret
= wb_resp_write_recv(req
, &err
);
731 DEBUG(2, ("Could not write response[%d:%s] to client: %s\n",
732 (int)state
->pid
, state
->cmd_name
, strerror(err
)));
733 remove_client(state
);
737 DEBUG(10,("winbind_client_response_written[%d:%s]: delivered response "
738 "to client\n", (int)state
->pid
, state
->cmd_name
));
740 TALLOC_FREE(state
->mem_ctx
);
741 state
->response
= NULL
;
742 state
->cmd_name
= "no request";
743 state
->recv_fn
= NULL
;
745 req
= wb_req_read_send(state
, winbind_event_context(), state
->sock
,
746 WINBINDD_MAX_EXTRA_DATA
);
748 remove_client(state
);
751 tevent_req_set_callback(req
, winbind_client_request_read
, state
);
754 void request_error(struct winbindd_cli_state
*state
)
756 SMB_ASSERT(state
->response
->result
== WINBINDD_PENDING
);
757 state
->response
->result
= WINBINDD_ERROR
;
758 request_finished(state
);
761 void request_ok(struct winbindd_cli_state
*state
)
763 SMB_ASSERT(state
->response
->result
== WINBINDD_PENDING
);
764 state
->response
->result
= WINBINDD_OK
;
765 request_finished(state
);
768 /* Process a new connection by adding it to the client connection list */
770 static void new_connection(int listen_sock
, bool privileged
)
772 struct sockaddr_un sunaddr
;
773 struct winbindd_cli_state
*state
;
774 struct tevent_req
*req
;
778 /* Accept connection */
780 len
= sizeof(sunaddr
);
782 sock
= accept(listen_sock
, (struct sockaddr
*)(void *)&sunaddr
, &len
);
785 if (errno
!= EINTR
) {
786 DEBUG(0, ("Faild to accept socket - %s\n",
792 DEBUG(6,("accepted socket %d\n", sock
));
794 /* Create new connection structure */
796 if ((state
= TALLOC_ZERO_P(NULL
, struct winbindd_cli_state
)) == NULL
) {
803 state
->out_queue
= tevent_queue_create(state
, "winbind client reply");
804 if (state
->out_queue
== NULL
) {
810 state
->last_access
= time(NULL
);
812 state
->privileged
= privileged
;
814 req
= wb_req_read_send(state
, winbind_event_context(), state
->sock
,
815 WINBINDD_MAX_EXTRA_DATA
);
821 tevent_req_set_callback(req
, winbind_client_request_read
, state
);
823 /* Add to connection list */
825 winbindd_add_client(state
);
828 static void winbind_client_request_read(struct tevent_req
*req
)
830 struct winbindd_cli_state
*state
= tevent_req_callback_data(
831 req
, struct winbindd_cli_state
);
835 ret
= wb_req_read_recv(req
, state
, &state
->request
, &err
);
839 DEBUG(6, ("closing socket %d, client exited\n",
842 DEBUG(2, ("Could not read client request from fd %d: "
843 "%s\n", state
->sock
, strerror(err
)));
847 remove_client(state
);
850 process_request(state
);
853 /* Remove a client connection from client connection list */
855 static void remove_client(struct winbindd_cli_state
*state
)
860 /* It's a dead client - hold a funeral */
866 if (state
->sock
!= -1) {
867 /* tell client, we are closing ... */
868 nwritten
= write(state
->sock
, &c
, sizeof(c
));
869 if (nwritten
== -1) {
870 DEBUG(2, ("final write to client failed: %s\n",
880 TALLOC_FREE(state
->mem_ctx
);
882 /* Remove from list and free */
884 winbindd_remove_client(state
);
888 /* Is a client idle? */
890 static bool client_is_idle(struct winbindd_cli_state
*state
) {
891 return (state
->response
== NULL
&&
892 !state
->pwent_state
&& !state
->grent_state
);
895 /* Shutdown client connection which has been idle for the longest time */
897 static bool remove_idle_client(void)
899 struct winbindd_cli_state
*state
, *remove_state
= NULL
;
900 time_t last_access
= 0;
903 for (state
= winbindd_client_list(); state
; state
= state
->next
) {
904 if (client_is_idle(state
)) {
906 if (!last_access
|| state
->last_access
< last_access
) {
907 last_access
= state
->last_access
;
908 remove_state
= state
;
914 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
915 nidle
, remove_state
->sock
, (unsigned int)remove_state
->pid
));
916 remove_client(remove_state
);
923 struct winbindd_listen_state
{
928 static void winbindd_listen_fde_handler(struct tevent_context
*ev
,
929 struct tevent_fd
*fde
,
933 struct winbindd_listen_state
*s
= talloc_get_type_abort(private_data
,
934 struct winbindd_listen_state
);
936 while (winbindd_num_clients() > lp_winbind_max_clients() - 1) {
937 DEBUG(5,("winbindd: Exceeding %d client "
938 "connections, removing idle "
939 "connection.\n", lp_winbind_max_clients()));
940 if (!remove_idle_client()) {
941 DEBUG(0,("winbindd: Exceeding %d "
942 "client connections, no idle "
943 "connection found\n",
944 lp_winbind_max_clients()));
948 new_connection(s
->fd
, s
->privileged
);
952 * Winbindd socket accessor functions
955 const char *get_winbind_pipe_dir(void)
957 return lp_parm_const_string(-1, "winbindd", "socket dir", WINBINDD_SOCKET_DIR
);
960 char *get_winbind_priv_pipe_dir(void)
962 return lock_path(WINBINDD_PRIV_SOCKET_SUBDIR
);
965 static bool winbindd_setup_listeners(void)
967 struct winbindd_listen_state
*pub_state
= NULL
;
968 struct winbindd_listen_state
*priv_state
= NULL
;
969 struct tevent_fd
*fde
;
971 pub_state
= talloc(winbind_event_context(),
972 struct winbindd_listen_state
);
977 pub_state
->privileged
= false;
978 pub_state
->fd
= create_pipe_sock(
979 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME
, 0755);
980 if (pub_state
->fd
== -1) {
984 fde
= tevent_add_fd(winbind_event_context(), pub_state
, pub_state
->fd
,
985 TEVENT_FD_READ
, winbindd_listen_fde_handler
,
988 close(pub_state
->fd
);
991 tevent_fd_set_auto_close(fde
);
993 priv_state
= talloc(winbind_event_context(),
994 struct winbindd_listen_state
);
999 priv_state
->privileged
= true;
1000 priv_state
->fd
= create_pipe_sock(
1001 get_winbind_priv_pipe_dir(), WINBINDD_SOCKET_NAME
, 0750);
1002 if (priv_state
->fd
== -1) {
1006 fde
= tevent_add_fd(winbind_event_context(), priv_state
,
1007 priv_state
->fd
, TEVENT_FD_READ
,
1008 winbindd_listen_fde_handler
, priv_state
);
1010 close(priv_state
->fd
);
1013 tevent_fd_set_auto_close(fde
);
1017 TALLOC_FREE(pub_state
);
1018 TALLOC_FREE(priv_state
);
1022 bool winbindd_use_idmap_cache(void)
1024 return !opt_nocache
;
1027 bool winbindd_use_cache(void)
1029 return !opt_nocache
;
1032 void winbindd_register_handlers(void)
1034 /* Setup signal handlers */
1036 if (!winbindd_setup_sig_term_handler(true))
1038 if (!winbindd_setup_sig_hup_handler(NULL
))
1040 if (!winbindd_setup_sig_chld_handler())
1042 if (!winbindd_setup_sig_usr2_handler())
1045 CatchSignal(SIGPIPE
, SIG_IGN
); /* Ignore sigpipe */
1048 * Ensure all cache and idmap caches are consistent
1049 * and initialized before we startup.
1051 if (!winbindd_cache_validate_and_initialize()) {
1055 /* get broadcast messages */
1057 if (!serverid_register(procid_self(),
1058 FLAG_MSG_GENERAL
|FLAG_MSG_DBWRAP
)) {
1059 DEBUG(1, ("Could not register myself in serverid.tdb\n"));
1063 /* React on 'smbcontrol winbindd reload-config' in the same way
1064 as to SIGHUP signal */
1065 messaging_register(winbind_messaging_context(), NULL
,
1066 MSG_SMB_CONF_UPDATED
, msg_reload_services
);
1067 messaging_register(winbind_messaging_context(), NULL
,
1068 MSG_SHUTDOWN
, msg_shutdown
);
1070 /* Handle online/offline messages. */
1071 messaging_register(winbind_messaging_context(), NULL
,
1072 MSG_WINBIND_OFFLINE
, winbind_msg_offline
);
1073 messaging_register(winbind_messaging_context(), NULL
,
1074 MSG_WINBIND_ONLINE
, winbind_msg_online
);
1075 messaging_register(winbind_messaging_context(), NULL
,
1076 MSG_WINBIND_ONLINESTATUS
, winbind_msg_onlinestatus
);
1078 messaging_register(winbind_messaging_context(), NULL
,
1079 MSG_DUMP_EVENT_LIST
, winbind_msg_dump_event_list
);
1081 messaging_register(winbind_messaging_context(), NULL
,
1082 MSG_WINBIND_VALIDATE_CACHE
,
1083 winbind_msg_validate_cache
);
1085 messaging_register(winbind_messaging_context(), NULL
,
1086 MSG_WINBIND_DUMP_DOMAIN_LIST
,
1087 winbind_msg_dump_domain_list
);
1089 messaging_register(winbind_messaging_context(), NULL
,
1090 MSG_WINBIND_IP_DROPPED
,
1091 winbind_msg_ip_dropped_parent
);
1093 /* Register handler for MSG_DEBUG. */
1094 messaging_register(winbind_messaging_context(), NULL
,
1098 netsamlogon_cache_init(); /* Non-critical */
1100 /* clear the cached list of trusted domains */
1104 if (!init_domain_list()) {
1105 DEBUG(0,("unable to initialize domain list\n"));
1110 init_locator_child();
1112 smb_nscd_flush_user_cache();
1113 smb_nscd_flush_group_cache();
1115 if (lp_allow_trusted_domains()) {
1116 if (tevent_add_timer(winbind_event_context(), NULL
, timeval_zero(),
1117 rescan_trusted_domains
, NULL
) == NULL
) {
1118 DEBUG(0, ("Could not trigger rescan_trusted_domains()\n"));
1125 struct winbindd_addrchanged_state
{
1126 struct addrchange_context
*ctx
;
1127 struct tevent_context
*ev
;
1128 struct messaging_context
*msg_ctx
;
1131 static void winbindd_addr_changed(struct tevent_req
*req
);
1133 static void winbindd_init_addrchange(TALLOC_CTX
*mem_ctx
,
1134 struct tevent_context
*ev
,
1135 struct messaging_context
*msg_ctx
)
1137 struct winbindd_addrchanged_state
*state
;
1138 struct tevent_req
*req
;
1141 state
= talloc(mem_ctx
, struct winbindd_addrchanged_state
);
1142 if (state
== NULL
) {
1143 DEBUG(10, ("talloc failed\n"));
1147 state
->msg_ctx
= msg_ctx
;
1149 status
= addrchange_context_create(state
, &state
->ctx
);
1150 if (!NT_STATUS_IS_OK(status
)) {
1151 DEBUG(10, ("addrchange_context_create failed: %s\n",
1152 nt_errstr(status
)));
1156 req
= addrchange_send(state
, ev
, state
->ctx
);
1158 DEBUG(0, ("addrchange_send failed\n"));
1162 tevent_req_set_callback(req
, winbindd_addr_changed
, state
);
1165 static void winbindd_addr_changed(struct tevent_req
*req
)
1167 struct winbindd_addrchanged_state
*state
= tevent_req_callback_data(
1168 req
, struct winbindd_addrchanged_state
);
1169 enum addrchange_type type
;
1170 struct sockaddr_storage addr
;
1173 status
= addrchange_recv(req
, &type
, &addr
);
1175 if (!NT_STATUS_IS_OK(status
)) {
1176 DEBUG(10, ("addrchange_recv failed: %s, stop listening\n",
1177 nt_errstr(status
)));
1181 if (type
== ADDRCHANGE_DEL
) {
1182 char addrstr
[INET6_ADDRSTRLEN
];
1185 print_sockaddr(addrstr
, sizeof(addrstr
), &addr
);
1187 DEBUG(3, ("winbindd: kernel (AF_NETLINK) dropped ip %s\n",
1190 blob
= data_blob_const(addrstr
, strlen(addrstr
)+1);
1192 status
= messaging_send(state
->msg_ctx
,
1193 messaging_server_id(state
->msg_ctx
),
1194 MSG_WINBIND_IP_DROPPED
, &blob
);
1195 if (!NT_STATUS_IS_OK(status
)) {
1196 DEBUG(10, ("messaging_send failed: %s - ignoring\n",
1197 nt_errstr(status
)));
1200 req
= addrchange_send(state
, state
->ev
, state
->ctx
);
1202 DEBUG(0, ("addrchange_send failed\n"));
1206 tevent_req_set_callback(req
, winbindd_addr_changed
, state
);
1211 int main(int argc
, char **argv
, char **envp
)
1213 static bool is_daemon
= False
;
1214 static bool Fork
= True
;
1215 static bool log_stdout
= False
;
1216 static bool no_process_group
= False
;
1220 OPT_NO_PROCESS_GROUP
,
1223 struct poptOption long_options
[] = {
1225 { "stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
1226 { "foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Daemon in foreground mode" },
1227 { "no-process-group", 0, POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
1228 { "daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
1229 { "interactive", 'i', POPT_ARG_NONE
, NULL
, 'i', "Interactive mode" },
1230 { "no-caching", 'n', POPT_ARG_NONE
, NULL
, 'n', "Disable caching" },
1240 * Do this before any other talloc operation
1242 talloc_enable_null_tracking();
1243 frame
= talloc_stackframe();
1245 /* glibc (?) likes to print "User defined signal 1" and exit if a
1246 SIGUSR[12] is received before a handler is installed */
1248 CatchSignal(SIGUSR1
, SIG_IGN
);
1249 CatchSignal(SIGUSR2
, SIG_IGN
);
1251 fault_setup((void (*)(void *))fault_quit
);
1252 dump_core_setup("winbindd");
1256 /* Initialise for running in non-root mode */
1260 set_remote_machine_name("winbindd", False
);
1262 /* Set environment variable so we don't recursively call ourselves.
1263 This may also be useful interactively. */
1265 if ( !winbind_off() ) {
1266 DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
1270 /* Initialise samba/rpc client stuff */
1272 pc
= poptGetContext("winbindd", argc
, (const char **)argv
, long_options
, 0);
1274 while ((opt
= poptGetNextOpt(pc
)) != -1) {
1276 /* Don't become a daemon */
1288 case OPT_NO_PROCESS_GROUP
:
1289 no_process_group
= true;
1291 case OPT_LOG_STDOUT
:
1298 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
1299 poptBadOption(pc
, 0), poptStrerror(opt
));
1300 poptPrintUsage(pc
, stderr
, 0);
1305 if (is_daemon
&& interactive
) {
1306 d_fprintf(stderr
,"\nERROR: "
1307 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
1308 poptPrintUsage(pc
, stderr
, 0);
1312 if (log_stdout
&& Fork
) {
1313 d_fprintf(stderr
, "\nERROR: "
1314 "Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n\n");
1315 poptPrintUsage(pc
, stderr
, 0);
1319 poptFreeContext(pc
);
1321 if (!override_logfile
) {
1323 if (asprintf(&lfile
,"%s/log.winbindd",
1324 get_dyn_LOGFILEBASE()) > 0) {
1325 lp_set_logfile(lfile
);
1330 setup_logging("winbindd", DEBUG_STDOUT
);
1332 setup_logging("winbindd", DEBUG_FILE
);
1336 DEBUG(0,("winbindd version %s started.\n", samba_version_string()));
1337 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1339 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1340 DEBUG(0, ("error opening config file\n"));
1344 /* Initialise messaging system */
1346 if (winbind_messaging_context() == NULL
) {
1350 if (!reload_services_file(NULL
)) {
1351 DEBUG(0, ("error opening config file\n"));
1355 if (!directory_exist(lp_lockdir())) {
1356 mkdir(lp_lockdir(), 0755);
1366 if (!secrets_init()) {
1368 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1372 /* Unblock all signals we are interested in as they may have been
1373 blocked by the parent process. */
1375 BlockSignals(False
, SIGINT
);
1376 BlockSignals(False
, SIGQUIT
);
1377 BlockSignals(False
, SIGTERM
);
1378 BlockSignals(False
, SIGUSR1
);
1379 BlockSignals(False
, SIGUSR2
);
1380 BlockSignals(False
, SIGHUP
);
1381 BlockSignals(False
, SIGCHLD
);
1384 become_daemon(Fork
, no_process_group
, log_stdout
);
1386 pidfile_create("winbindd");
1390 * If we're interactive we want to set our own process group for
1391 * signal management.
1393 if (interactive
&& !no_process_group
)
1394 setpgid( (pid_t
)0, (pid_t
)0);
1399 /* Don't use winbindd_reinit_after_fork here as
1400 * we're just starting up and haven't created any
1401 * winbindd-specific resources we must free yet. JRA.
1404 status
= reinit_after_fork(winbind_messaging_context(),
1405 winbind_event_context(),
1406 procid_self(), false);
1407 if (!NT_STATUS_IS_OK(status
)) {
1408 DEBUG(0,("reinit_after_fork() failed\n"));
1412 winbindd_register_handlers();
1414 status
= init_system_info();
1415 if (!NT_STATUS_IS_OK(status
)) {
1416 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1417 nt_errstr(status
)));
1421 rpc_lsarpc_init(NULL
);
1422 rpc_samr_init(NULL
);
1424 winbindd_init_addrchange(NULL
, winbind_event_context(),
1425 winbind_messaging_context());
1427 /* setup listen sockets */
1429 if (!winbindd_setup_listeners()) {
1430 DEBUG(0,("winbindd_setup_listeners() failed\n"));
1435 /* Loop waiting for requests */
1437 frame
= talloc_stackframe();
1439 if (tevent_loop_once(winbind_event_context()) == -1) {
1440 DEBUG(1, ("tevent_loop_once() failed: %s\n",