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 char *fname
= lp_configfile();
70 if (file_exist(fname
) && !strcsequal(fname
,get_dyn_CONFIGFILE())) {
71 set_dyn_CONFIGFILE(fname
);
76 /* if this is a child, restore the logfile to the special
77 name - <domain>, idmap, etc. */
78 if (lfile
&& *lfile
) {
79 lp_set_logfile(lfile
);
83 ret
= lp_load(get_dyn_CONFIGFILE(),False
,False
,True
,True
);
92 /**************************************************************************** **
94 **************************************************************************** */
96 static void fault_quit(void)
101 static void winbindd_status(void)
103 struct winbindd_cli_state
*tmp
;
105 DEBUG(0, ("winbindd status:\n"));
107 /* Print client state information */
109 DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
111 if (DEBUGLEVEL
>= 2 && winbindd_num_clients()) {
112 DEBUG(2, ("\tclient list:\n"));
113 for(tmp
= winbindd_client_list(); tmp
; tmp
= tmp
->next
) {
114 DEBUGADD(2, ("\t\tpid %lu, sock %d (%s)\n",
115 (unsigned long)tmp
->pid
, tmp
->sock
,
116 client_is_idle(tmp
) ? "idle" : "active"));
121 /* Flush client cache */
123 static void flush_caches(void)
125 /* We need to invalidate cached user list entries on a SIGHUP
126 otherwise cached access denied errors due to restrict anonymous
127 hang around until the sequence number changes. */
129 if (!wcache_invalidate_cache()) {
130 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
131 if (!winbindd_cache_validate_and_initialize()) {
137 static void flush_caches_noinit(void)
140 * We need to invalidate cached user list entries on a SIGHUP
141 * otherwise cached access denied errors due to restrict anonymous
142 * hang around until the sequence number changes.
144 * Skip uninitialized domains when flush cache.
145 * If domain is not initialized, it means it is never
146 * used or never become online. look, wcache_invalidate_cache()
147 * -> get_cache() -> init_dc_connection(). It causes a lot of traffic
148 * for unused domains and large traffic for primay domain's DC if there
152 if (!wcache_invalidate_cache_noinit()) {
153 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
154 if (!winbindd_cache_validate_and_initialize()) {
160 /* Handle the signal by unlinking socket and exiting */
162 static void terminate(bool is_parent
)
165 /* When parent goes away we should
166 * remove the socket file. Not so
167 * when children terminate.
171 if (asprintf(&path
, "%s/%s",
172 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME
) > 0) {
180 trustdom_cache_shutdown();
182 gencache_stabilize();
186 TALLOC_CTX
*mem_ctx
= talloc_init("end_description");
187 char *description
= talloc_describe_all(mem_ctx
);
189 DEBUG(3, ("tallocs left:\n%s\n", description
));
190 talloc_destroy(mem_ctx
);
195 serverid_deregister(procid_self());
202 static void winbindd_sig_term_handler(struct tevent_context
*ev
,
203 struct tevent_signal
*se
,
209 bool *is_parent
= talloc_get_type_abort(private_data
, bool);
211 DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
212 signum
, (int)*is_parent
));
213 terminate(*is_parent
);
216 bool winbindd_setup_sig_term_handler(bool parent
)
218 struct tevent_signal
*se
;
221 is_parent
= talloc(winbind_event_context(), bool);
228 se
= tevent_add_signal(winbind_event_context(),
231 winbindd_sig_term_handler
,
234 DEBUG(0,("failed to setup SIGTERM handler"));
235 talloc_free(is_parent
);
239 se
= tevent_add_signal(winbind_event_context(),
242 winbindd_sig_term_handler
,
245 DEBUG(0,("failed to setup SIGINT handler"));
246 talloc_free(is_parent
);
250 se
= tevent_add_signal(winbind_event_context(),
253 winbindd_sig_term_handler
,
256 DEBUG(0,("failed to setup SIGINT handler"));
257 talloc_free(is_parent
);
264 static void winbindd_sig_hup_handler(struct tevent_context
*ev
,
265 struct tevent_signal
*se
,
271 const char *file
= (const char *)private_data
;
273 DEBUG(1,("Reloading services after SIGHUP\n"));
274 flush_caches_noinit();
275 reload_services_file(file
);
278 bool winbindd_setup_sig_hup_handler(const char *lfile
)
280 struct tevent_signal
*se
;
284 file
= talloc_strdup(winbind_event_context(),
291 se
= tevent_add_signal(winbind_event_context(),
292 winbind_event_context(),
294 winbindd_sig_hup_handler
,
303 static void winbindd_sig_chld_handler(struct tevent_context
*ev
,
304 struct tevent_signal
*se
,
312 while ((pid
= sys_waitpid(-1, NULL
, WNOHANG
)) > 0) {
313 winbind_child_died(pid
);
317 static bool winbindd_setup_sig_chld_handler(void)
319 struct tevent_signal
*se
;
321 se
= tevent_add_signal(winbind_event_context(),
322 winbind_event_context(),
324 winbindd_sig_chld_handler
,
333 static void winbindd_sig_usr2_handler(struct tevent_context
*ev
,
334 struct tevent_signal
*se
,
343 static bool winbindd_setup_sig_usr2_handler(void)
345 struct tevent_signal
*se
;
347 se
= tevent_add_signal(winbind_event_context(),
348 winbind_event_context(),
350 winbindd_sig_usr2_handler
,
359 /* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
360 static void msg_reload_services(struct messaging_context
*msg
,
363 struct server_id server_id
,
366 /* Flush various caches */
368 reload_services_file((const char *) private_data
);
371 /* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
372 static void msg_shutdown(struct messaging_context
*msg
,
375 struct server_id server_id
,
378 /* only the parent waits for this message */
379 DEBUG(0,("Got shutdown message\n"));
384 static void winbind_msg_validate_cache(struct messaging_context
*msg_ctx
,
387 struct server_id server_id
,
394 DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
398 * call the validation code from a child:
399 * so we don't block the main winbindd and the validation
400 * code can safely use fork/waitpid...
402 child_pid
= sys_fork();
404 if (child_pid
== -1) {
405 DEBUG(1, ("winbind_msg_validate_cache: Could not fork: %s\n",
410 if (child_pid
!= 0) {
412 DEBUG(5, ("winbind_msg_validate_cache: child created with "
413 "pid %d.\n", (int)child_pid
));
419 status
= winbindd_reinit_after_fork(NULL
, NULL
);
420 if (!NT_STATUS_IS_OK(status
)) {
421 DEBUG(1, ("winbindd_reinit_after_fork failed: %s\n",
426 /* install default SIGCHLD handler: validation code uses fork/waitpid */
427 CatchSignal(SIGCHLD
, SIG_DFL
);
429 ret
= (uint8
)winbindd_validate_cache_nobackup();
430 DEBUG(10, ("winbindd_msg_validata_cache: got return value %d\n", ret
));
431 messaging_send_buf(msg_ctx
, server_id
, MSG_WINBIND_VALIDATE_CACHE
, &ret
,
436 static struct winbindd_dispatch_table
{
437 enum winbindd_cmd cmd
;
438 void (*fn
)(struct winbindd_cli_state
*state
);
439 const char *winbindd_cmd_name
;
440 } dispatch_table
[] = {
442 /* Enumeration functions */
444 { WINBINDD_LIST_TRUSTDOM
, winbindd_list_trusted_domains
,
449 { WINBINDD_INFO
, winbindd_info
, "INFO" },
450 { WINBINDD_INTERFACE_VERSION
, winbindd_interface_version
,
451 "INTERFACE_VERSION" },
452 { WINBINDD_DOMAIN_NAME
, winbindd_domain_name
, "DOMAIN_NAME" },
453 { WINBINDD_DOMAIN_INFO
, winbindd_domain_info
, "DOMAIN_INFO" },
454 { WINBINDD_DC_INFO
, winbindd_dc_info
, "DC_INFO" },
455 { WINBINDD_NETBIOS_NAME
, winbindd_netbios_name
, "NETBIOS_NAME" },
456 { WINBINDD_PRIV_PIPE_DIR
, winbindd_priv_pipe_dir
,
457 "WINBINDD_PRIV_PIPE_DIR" },
459 /* Credential cache access */
460 { WINBINDD_CCACHE_NTLMAUTH
, winbindd_ccache_ntlm_auth
, "NTLMAUTH" },
461 { WINBINDD_CCACHE_SAVE
, winbindd_ccache_save
, "CCACHE_SAVE" },
465 { WINBINDD_WINS_BYNAME
, winbindd_wins_byname
, "WINS_BYNAME" },
466 { WINBINDD_WINS_BYIP
, winbindd_wins_byip
, "WINS_BYIP" },
470 { WINBINDD_NUM_CMDS
, NULL
, "NONE" }
473 struct winbindd_async_dispatch_table
{
474 enum winbindd_cmd cmd
;
475 const char *cmd_name
;
476 struct tevent_req
*(*send_req
)(TALLOC_CTX
*mem_ctx
,
477 struct tevent_context
*ev
,
478 struct winbindd_cli_state
*cli
,
479 struct winbindd_request
*request
);
480 NTSTATUS (*recv_req
)(struct tevent_req
*req
,
481 struct winbindd_response
*presp
);
484 static struct winbindd_async_dispatch_table async_nonpriv_table
[] = {
485 { WINBINDD_PING
, "PING",
486 wb_ping_send
, wb_ping_recv
},
487 { WINBINDD_LOOKUPSID
, "LOOKUPSID",
488 winbindd_lookupsid_send
, winbindd_lookupsid_recv
},
489 { WINBINDD_LOOKUPSIDS
, "LOOKUPSIDS",
490 winbindd_lookupsids_send
, winbindd_lookupsids_recv
},
491 { WINBINDD_LOOKUPNAME
, "LOOKUPNAME",
492 winbindd_lookupname_send
, winbindd_lookupname_recv
},
493 { WINBINDD_SID_TO_UID
, "SID_TO_UID",
494 winbindd_sid_to_uid_send
, winbindd_sid_to_uid_recv
},
495 { WINBINDD_SID_TO_GID
, "SID_TO_GID",
496 winbindd_sid_to_gid_send
, winbindd_sid_to_gid_recv
},
497 { WINBINDD_UID_TO_SID
, "UID_TO_SID",
498 winbindd_uid_to_sid_send
, winbindd_uid_to_sid_recv
},
499 { WINBINDD_GID_TO_SID
, "GID_TO_SID",
500 winbindd_gid_to_sid_send
, winbindd_gid_to_sid_recv
},
501 { WINBINDD_SIDS_TO_XIDS
, "SIDS_TO_XIDS",
502 winbindd_sids_to_xids_send
, winbindd_sids_to_xids_recv
},
503 { WINBINDD_GETPWSID
, "GETPWSID",
504 winbindd_getpwsid_send
, winbindd_getpwsid_recv
},
505 { WINBINDD_GETPWNAM
, "GETPWNAM",
506 winbindd_getpwnam_send
, winbindd_getpwnam_recv
},
507 { WINBINDD_GETPWUID
, "GETPWUID",
508 winbindd_getpwuid_send
, winbindd_getpwuid_recv
},
509 { WINBINDD_GETSIDALIASES
, "GETSIDALIASES",
510 winbindd_getsidaliases_send
, winbindd_getsidaliases_recv
},
511 { WINBINDD_GETUSERDOMGROUPS
, "GETUSERDOMGROUPS",
512 winbindd_getuserdomgroups_send
, winbindd_getuserdomgroups_recv
},
513 { WINBINDD_GETGROUPS
, "GETGROUPS",
514 winbindd_getgroups_send
, winbindd_getgroups_recv
},
515 { WINBINDD_SHOW_SEQUENCE
, "SHOW_SEQUENCE",
516 winbindd_show_sequence_send
, winbindd_show_sequence_recv
},
517 { WINBINDD_GETGRGID
, "GETGRGID",
518 winbindd_getgrgid_send
, winbindd_getgrgid_recv
},
519 { WINBINDD_GETGRNAM
, "GETGRNAM",
520 winbindd_getgrnam_send
, winbindd_getgrnam_recv
},
521 { WINBINDD_GETUSERSIDS
, "GETUSERSIDS",
522 winbindd_getusersids_send
, winbindd_getusersids_recv
},
523 { WINBINDD_LOOKUPRIDS
, "LOOKUPRIDS",
524 winbindd_lookuprids_send
, winbindd_lookuprids_recv
},
525 { WINBINDD_SETPWENT
, "SETPWENT",
526 winbindd_setpwent_send
, winbindd_setpwent_recv
},
527 { WINBINDD_GETPWENT
, "GETPWENT",
528 winbindd_getpwent_send
, winbindd_getpwent_recv
},
529 { WINBINDD_ENDPWENT
, "ENDPWENT",
530 winbindd_endpwent_send
, winbindd_endpwent_recv
},
531 { WINBINDD_DSGETDCNAME
, "DSGETDCNAME",
532 winbindd_dsgetdcname_send
, winbindd_dsgetdcname_recv
},
533 { WINBINDD_GETDCNAME
, "GETDCNAME",
534 winbindd_getdcname_send
, winbindd_getdcname_recv
},
535 { WINBINDD_SETGRENT
, "SETGRENT",
536 winbindd_setgrent_send
, winbindd_setgrent_recv
},
537 { WINBINDD_GETGRENT
, "GETGRENT",
538 winbindd_getgrent_send
, winbindd_getgrent_recv
},
539 { WINBINDD_ENDGRENT
, "ENDGRENT",
540 winbindd_endgrent_send
, winbindd_endgrent_recv
},
541 { WINBINDD_LIST_USERS
, "LIST_USERS",
542 winbindd_list_users_send
, winbindd_list_users_recv
},
543 { WINBINDD_LIST_GROUPS
, "LIST_GROUPS",
544 winbindd_list_groups_send
, winbindd_list_groups_recv
},
545 { WINBINDD_CHECK_MACHACC
, "CHECK_MACHACC",
546 winbindd_check_machine_acct_send
, winbindd_check_machine_acct_recv
},
547 { WINBINDD_PING_DC
, "PING_DC",
548 winbindd_ping_dc_send
, winbindd_ping_dc_recv
},
549 { WINBINDD_PAM_AUTH
, "PAM_AUTH",
550 winbindd_pam_auth_send
, winbindd_pam_auth_recv
},
551 { WINBINDD_PAM_LOGOFF
, "PAM_LOGOFF",
552 winbindd_pam_logoff_send
, winbindd_pam_logoff_recv
},
553 { WINBINDD_PAM_CHAUTHTOK
, "PAM_CHAUTHTOK",
554 winbindd_pam_chauthtok_send
, winbindd_pam_chauthtok_recv
},
555 { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP
, "PAM_CHNG_PSWD_AUTH_CRAP",
556 winbindd_pam_chng_pswd_auth_crap_send
,
557 winbindd_pam_chng_pswd_auth_crap_recv
},
559 { 0, NULL
, NULL
, NULL
}
562 static struct winbindd_async_dispatch_table async_priv_table
[] = {
563 { WINBINDD_ALLOCATE_UID
, "ALLOCATE_UID",
564 winbindd_allocate_uid_send
, winbindd_allocate_uid_recv
},
565 { WINBINDD_ALLOCATE_GID
, "ALLOCATE_GID",
566 winbindd_allocate_gid_send
, winbindd_allocate_gid_recv
},
567 { WINBINDD_CHANGE_MACHACC
, "CHANGE_MACHACC",
568 winbindd_change_machine_acct_send
, winbindd_change_machine_acct_recv
},
569 { WINBINDD_PAM_AUTH_CRAP
, "PAM_AUTH_CRAP",
570 winbindd_pam_auth_crap_send
, winbindd_pam_auth_crap_recv
},
572 { 0, NULL
, NULL
, NULL
}
575 static void wb_request_done(struct tevent_req
*req
);
577 static void process_request(struct winbindd_cli_state
*state
)
579 struct winbindd_dispatch_table
*table
= dispatch_table
;
580 struct winbindd_async_dispatch_table
*atable
;
582 state
->mem_ctx
= talloc_named(state
, 0, "winbind request");
583 if (state
->mem_ctx
== NULL
)
586 /* Remember who asked us. */
587 state
->pid
= state
->request
->pid
;
589 state
->cmd_name
= "unknown request";
590 state
->recv_fn
= NULL
;
592 /* Process command */
594 for (atable
= async_nonpriv_table
; atable
->send_req
; atable
+= 1) {
595 if (state
->request
->cmd
== atable
->cmd
) {
600 if ((atable
->send_req
== NULL
) && state
->privileged
) {
601 for (atable
= async_priv_table
; atable
->send_req
;
603 if (state
->request
->cmd
== atable
->cmd
) {
609 if (atable
->send_req
!= NULL
) {
610 struct tevent_req
*req
;
612 state
->cmd_name
= atable
->cmd_name
;
613 state
->recv_fn
= atable
->recv_req
;
615 DEBUG(10, ("process_request: Handling async request %d:%s\n",
616 (int)state
->pid
, state
->cmd_name
));
618 req
= atable
->send_req(state
->mem_ctx
, winbind_event_context(),
619 state
, state
->request
);
621 DEBUG(0, ("process_request: atable->send failed for "
622 "%s\n", atable
->cmd_name
));
623 request_error(state
);
626 tevent_req_set_callback(req
, wb_request_done
, state
);
630 state
->response
= talloc_zero(state
->mem_ctx
,
631 struct winbindd_response
);
632 if (state
->response
== NULL
) {
633 DEBUG(10, ("talloc failed\n"));
634 remove_client(state
);
637 state
->response
->result
= WINBINDD_PENDING
;
638 state
->response
->length
= sizeof(struct winbindd_response
);
640 for (table
= dispatch_table
; table
->fn
; table
++) {
641 if (state
->request
->cmd
== table
->cmd
) {
642 DEBUG(10,("process_request: request fn %s\n",
643 table
->winbindd_cmd_name
));
644 state
->cmd_name
= table
->winbindd_cmd_name
;
651 DEBUG(10,("process_request: unknown request fn number %d\n",
652 (int)state
->request
->cmd
));
653 request_error(state
);
657 static void wb_request_done(struct tevent_req
*req
)
659 struct winbindd_cli_state
*state
= tevent_req_callback_data(
660 req
, struct winbindd_cli_state
);
663 state
->response
= talloc_zero(state
->mem_ctx
,
664 struct winbindd_response
);
665 if (state
->response
== NULL
) {
666 DEBUG(0, ("wb_request_done[%d:%s]: talloc_zero failed - removing client\n",
667 (int)state
->pid
, state
->cmd_name
));
668 remove_client(state
);
671 state
->response
->result
= WINBINDD_PENDING
;
672 state
->response
->length
= sizeof(struct winbindd_response
);
674 status
= state
->recv_fn(req
, state
->response
);
677 DEBUG(10,("wb_request_done[%d:%s]: %s\n",
678 (int)state
->pid
, state
->cmd_name
, nt_errstr(status
)));
680 if (!NT_STATUS_IS_OK(status
)) {
681 request_error(state
);
688 * This is the main event loop of winbind requests. It goes through a
689 * state-machine of 3 read/write requests, 4 if you have extra data to send.
691 * An idle winbind client has a read request of 4 bytes outstanding,
692 * finalizing function is request_len_recv, checking the length. request_recv
693 * then processes the packet. The processing function then at some point has
694 * to call request_finished which schedules sending the response.
697 static void request_finished(struct winbindd_cli_state
*state
);
699 static void winbind_client_request_read(struct tevent_req
*req
);
700 static void winbind_client_response_written(struct tevent_req
*req
);
702 static void request_finished(struct winbindd_cli_state
*state
)
704 struct tevent_req
*req
;
706 TALLOC_FREE(state
->request
);
708 req
= wb_resp_write_send(state
, winbind_event_context(),
709 state
->out_queue
, state
->sock
,
712 DEBUG(10,("request_finished[%d:%s]: wb_resp_write_send() failed\n",
713 (int)state
->pid
, state
->cmd_name
));
714 remove_client(state
);
717 tevent_req_set_callback(req
, winbind_client_response_written
, state
);
720 static void winbind_client_response_written(struct tevent_req
*req
)
722 struct winbindd_cli_state
*state
= tevent_req_callback_data(
723 req
, struct winbindd_cli_state
);
727 ret
= wb_resp_write_recv(req
, &err
);
732 DEBUG(2, ("Could not write response[%d:%s] to client: %s\n",
733 (int)state
->pid
, state
->cmd_name
, strerror(err
)));
734 remove_client(state
);
738 DEBUG(10,("winbind_client_response_written[%d:%s]: delivered response "
739 "to client\n", (int)state
->pid
, state
->cmd_name
));
741 TALLOC_FREE(state
->mem_ctx
);
742 state
->response
= NULL
;
743 state
->cmd_name
= "no request";
744 state
->recv_fn
= NULL
;
746 req
= wb_req_read_send(state
, winbind_event_context(), state
->sock
,
747 WINBINDD_MAX_EXTRA_DATA
);
749 remove_client(state
);
752 tevent_req_set_callback(req
, winbind_client_request_read
, state
);
755 void request_error(struct winbindd_cli_state
*state
)
757 SMB_ASSERT(state
->response
->result
== WINBINDD_PENDING
);
758 state
->response
->result
= WINBINDD_ERROR
;
759 request_finished(state
);
762 void request_ok(struct winbindd_cli_state
*state
)
764 SMB_ASSERT(state
->response
->result
== WINBINDD_PENDING
);
765 state
->response
->result
= WINBINDD_OK
;
766 request_finished(state
);
769 /* Process a new connection by adding it to the client connection list */
771 static void new_connection(int listen_sock
, bool privileged
)
773 struct sockaddr_un sunaddr
;
774 struct winbindd_cli_state
*state
;
775 struct tevent_req
*req
;
779 /* Accept connection */
781 len
= sizeof(sunaddr
);
783 sock
= accept(listen_sock
, (struct sockaddr
*)(void *)&sunaddr
, &len
);
786 if (errno
!= EINTR
) {
787 DEBUG(0, ("Faild to accept socket - %s\n",
793 DEBUG(6,("accepted socket %d\n", sock
));
795 /* Create new connection structure */
797 if ((state
= TALLOC_ZERO_P(NULL
, struct winbindd_cli_state
)) == NULL
) {
804 state
->out_queue
= tevent_queue_create(state
, "winbind client reply");
805 if (state
->out_queue
== NULL
) {
811 state
->last_access
= time(NULL
);
813 state
->privileged
= privileged
;
815 req
= wb_req_read_send(state
, winbind_event_context(), state
->sock
,
816 WINBINDD_MAX_EXTRA_DATA
);
822 tevent_req_set_callback(req
, winbind_client_request_read
, state
);
824 /* Add to connection list */
826 winbindd_add_client(state
);
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 /* Is a client idle? */
891 static bool client_is_idle(struct winbindd_cli_state
*state
) {
892 return (state
->response
== NULL
&&
893 !state
->pwent_state
&& !state
->grent_state
);
896 /* Shutdown client connection which has been idle for the longest time */
898 static bool remove_idle_client(void)
900 struct winbindd_cli_state
*state
, *remove_state
= NULL
;
901 time_t last_access
= 0;
904 for (state
= winbindd_client_list(); state
; state
= state
->next
) {
905 if (client_is_idle(state
)) {
907 if (!last_access
|| state
->last_access
< last_access
) {
908 last_access
= state
->last_access
;
909 remove_state
= state
;
915 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
916 nidle
, remove_state
->sock
, (unsigned int)remove_state
->pid
));
917 remove_client(remove_state
);
924 struct winbindd_listen_state
{
929 static void winbindd_listen_fde_handler(struct tevent_context
*ev
,
930 struct tevent_fd
*fde
,
934 struct winbindd_listen_state
*s
= talloc_get_type_abort(private_data
,
935 struct winbindd_listen_state
);
937 while (winbindd_num_clients() > lp_winbind_max_clients() - 1) {
938 DEBUG(5,("winbindd: Exceeding %d client "
939 "connections, removing idle "
940 "connection.\n", lp_winbind_max_clients()));
941 if (!remove_idle_client()) {
942 DEBUG(0,("winbindd: Exceeding %d "
943 "client connections, no idle "
944 "connection found\n",
945 lp_winbind_max_clients()));
949 new_connection(s
->fd
, s
->privileged
);
953 * Winbindd socket accessor functions
956 const char *get_winbind_pipe_dir(void)
958 return lp_parm_const_string(-1, "winbindd", "socket dir", WINBINDD_SOCKET_DIR
);
961 char *get_winbind_priv_pipe_dir(void)
963 return lock_path(WINBINDD_PRIV_SOCKET_SUBDIR
);
966 static bool winbindd_setup_listeners(void)
968 struct winbindd_listen_state
*pub_state
= NULL
;
969 struct winbindd_listen_state
*priv_state
= NULL
;
970 struct tevent_fd
*fde
;
972 pub_state
= talloc(winbind_event_context(),
973 struct winbindd_listen_state
);
978 pub_state
->privileged
= false;
979 pub_state
->fd
= create_pipe_sock(
980 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME
, 0755);
981 if (pub_state
->fd
== -1) {
985 fde
= tevent_add_fd(winbind_event_context(), pub_state
, pub_state
->fd
,
986 TEVENT_FD_READ
, winbindd_listen_fde_handler
,
989 close(pub_state
->fd
);
992 tevent_fd_set_auto_close(fde
);
994 priv_state
= talloc(winbind_event_context(),
995 struct winbindd_listen_state
);
1000 priv_state
->privileged
= true;
1001 priv_state
->fd
= create_pipe_sock(
1002 get_winbind_priv_pipe_dir(), WINBINDD_SOCKET_NAME
, 0750);
1003 if (priv_state
->fd
== -1) {
1007 fde
= tevent_add_fd(winbind_event_context(), priv_state
,
1008 priv_state
->fd
, TEVENT_FD_READ
,
1009 winbindd_listen_fde_handler
, priv_state
);
1011 close(priv_state
->fd
);
1014 tevent_fd_set_auto_close(fde
);
1018 TALLOC_FREE(pub_state
);
1019 TALLOC_FREE(priv_state
);
1023 bool winbindd_use_idmap_cache(void)
1025 return !opt_nocache
;
1028 bool winbindd_use_cache(void)
1030 return !opt_nocache
;
1033 void winbindd_register_handlers(void)
1035 /* Setup signal handlers */
1037 if (!winbindd_setup_sig_term_handler(true))
1039 if (!winbindd_setup_sig_hup_handler(NULL
))
1041 if (!winbindd_setup_sig_chld_handler())
1043 if (!winbindd_setup_sig_usr2_handler())
1046 CatchSignal(SIGPIPE
, SIG_IGN
); /* Ignore sigpipe */
1049 * Ensure all cache and idmap caches are consistent
1050 * and initialized before we startup.
1052 if (!winbindd_cache_validate_and_initialize()) {
1056 /* get broadcast messages */
1058 if (!serverid_register(procid_self(),
1059 FLAG_MSG_GENERAL
|FLAG_MSG_DBWRAP
)) {
1060 DEBUG(1, ("Could not register myself in serverid.tdb\n"));
1064 /* React on 'smbcontrol winbindd reload-config' in the same way
1065 as to SIGHUP signal */
1066 messaging_register(winbind_messaging_context(), NULL
,
1067 MSG_SMB_CONF_UPDATED
, msg_reload_services
);
1068 messaging_register(winbind_messaging_context(), NULL
,
1069 MSG_SHUTDOWN
, msg_shutdown
);
1071 /* Handle online/offline messages. */
1072 messaging_register(winbind_messaging_context(), NULL
,
1073 MSG_WINBIND_OFFLINE
, winbind_msg_offline
);
1074 messaging_register(winbind_messaging_context(), NULL
,
1075 MSG_WINBIND_ONLINE
, winbind_msg_online
);
1076 messaging_register(winbind_messaging_context(), NULL
,
1077 MSG_WINBIND_ONLINESTATUS
, winbind_msg_onlinestatus
);
1079 messaging_register(winbind_messaging_context(), NULL
,
1080 MSG_DUMP_EVENT_LIST
, winbind_msg_dump_event_list
);
1082 messaging_register(winbind_messaging_context(), NULL
,
1083 MSG_WINBIND_VALIDATE_CACHE
,
1084 winbind_msg_validate_cache
);
1086 messaging_register(winbind_messaging_context(), NULL
,
1087 MSG_WINBIND_DUMP_DOMAIN_LIST
,
1088 winbind_msg_dump_domain_list
);
1090 messaging_register(winbind_messaging_context(), NULL
,
1091 MSG_WINBIND_IP_DROPPED
,
1092 winbind_msg_ip_dropped_parent
);
1094 /* Register handler for MSG_DEBUG. */
1095 messaging_register(winbind_messaging_context(), NULL
,
1099 netsamlogon_cache_init(); /* Non-critical */
1101 /* clear the cached list of trusted domains */
1105 if (!init_domain_list()) {
1106 DEBUG(0,("unable to initialize domain list\n"));
1111 init_locator_child();
1113 smb_nscd_flush_user_cache();
1114 smb_nscd_flush_group_cache();
1116 if (lp_allow_trusted_domains()) {
1117 if (tevent_add_timer(winbind_event_context(), NULL
, timeval_zero(),
1118 rescan_trusted_domains
, NULL
) == NULL
) {
1119 DEBUG(0, ("Could not trigger rescan_trusted_domains()\n"));
1126 struct winbindd_addrchanged_state
{
1127 struct addrchange_context
*ctx
;
1128 struct tevent_context
*ev
;
1129 struct messaging_context
*msg_ctx
;
1132 static void winbindd_addr_changed(struct tevent_req
*req
);
1134 static void winbindd_init_addrchange(TALLOC_CTX
*mem_ctx
,
1135 struct tevent_context
*ev
,
1136 struct messaging_context
*msg_ctx
)
1138 struct winbindd_addrchanged_state
*state
;
1139 struct tevent_req
*req
;
1142 state
= talloc(mem_ctx
, struct winbindd_addrchanged_state
);
1143 if (state
== NULL
) {
1144 DEBUG(10, ("talloc failed\n"));
1148 state
->msg_ctx
= msg_ctx
;
1150 status
= addrchange_context_create(state
, &state
->ctx
);
1151 if (!NT_STATUS_IS_OK(status
)) {
1152 DEBUG(10, ("addrchange_context_create failed: %s\n",
1153 nt_errstr(status
)));
1157 req
= addrchange_send(state
, ev
, state
->ctx
);
1159 DEBUG(0, ("addrchange_send failed\n"));
1163 tevent_req_set_callback(req
, winbindd_addr_changed
, state
);
1166 static void winbindd_addr_changed(struct tevent_req
*req
)
1168 struct winbindd_addrchanged_state
*state
= tevent_req_callback_data(
1169 req
, struct winbindd_addrchanged_state
);
1170 enum addrchange_type type
;
1171 struct sockaddr_storage addr
;
1174 status
= addrchange_recv(req
, &type
, &addr
);
1176 if (!NT_STATUS_IS_OK(status
)) {
1177 DEBUG(10, ("addrchange_recv failed: %s, stop listening\n",
1178 nt_errstr(status
)));
1182 if (type
== ADDRCHANGE_DEL
) {
1183 char addrstr
[INET6_ADDRSTRLEN
];
1186 print_sockaddr(addrstr
, sizeof(addrstr
), &addr
);
1188 DEBUG(3, ("winbindd: kernel (AF_NETLINK) dropped ip %s\n",
1191 blob
= data_blob_const(addrstr
, strlen(addrstr
)+1);
1193 status
= messaging_send(state
->msg_ctx
,
1194 messaging_server_id(state
->msg_ctx
),
1195 MSG_WINBIND_IP_DROPPED
, &blob
);
1196 if (!NT_STATUS_IS_OK(status
)) {
1197 DEBUG(10, ("messaging_send failed: %s - ignoring\n",
1198 nt_errstr(status
)));
1201 req
= addrchange_send(state
, state
->ev
, state
->ctx
);
1203 DEBUG(0, ("addrchange_send failed\n"));
1207 tevent_req_set_callback(req
, winbindd_addr_changed
, state
);
1212 int main(int argc
, char **argv
, char **envp
)
1214 static bool is_daemon
= False
;
1215 static bool Fork
= True
;
1216 static bool log_stdout
= False
;
1217 static bool no_process_group
= False
;
1221 OPT_NO_PROCESS_GROUP
,
1224 struct poptOption long_options
[] = {
1226 { "stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
1227 { "foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Daemon in foreground mode" },
1228 { "no-process-group", 0, POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
1229 { "daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
1230 { "interactive", 'i', POPT_ARG_NONE
, NULL
, 'i', "Interactive mode" },
1231 { "no-caching", 'n', POPT_ARG_NONE
, NULL
, 'n', "Disable caching" },
1241 * Do this before any other talloc operation
1243 talloc_enable_null_tracking();
1244 frame
= talloc_stackframe();
1246 /* glibc (?) likes to print "User defined signal 1" and exit if a
1247 SIGUSR[12] is received before a handler is installed */
1249 CatchSignal(SIGUSR1
, SIG_IGN
);
1250 CatchSignal(SIGUSR2
, SIG_IGN
);
1252 fault_setup((void (*)(void *))fault_quit
);
1253 dump_core_setup("winbindd");
1257 /* Initialise for running in non-root mode */
1261 set_remote_machine_name("winbindd", False
);
1263 /* Set environment variable so we don't recursively call ourselves.
1264 This may also be useful interactively. */
1266 if ( !winbind_off() ) {
1267 DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
1271 /* Initialise samba/rpc client stuff */
1273 pc
= poptGetContext("winbindd", argc
, (const char **)argv
, long_options
, 0);
1275 while ((opt
= poptGetNextOpt(pc
)) != -1) {
1277 /* Don't become a daemon */
1289 case OPT_NO_PROCESS_GROUP
:
1290 no_process_group
= true;
1292 case OPT_LOG_STDOUT
:
1299 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
1300 poptBadOption(pc
, 0), poptStrerror(opt
));
1301 poptPrintUsage(pc
, stderr
, 0);
1306 /* We call dump_core_setup one more time because the command line can
1307 * set the log file or the log-basename and this will influence where
1308 * cores are stored. Without this call get_dyn_LOGFILEBASE will be
1309 * the default value derived from build's prefix. For EOM this value
1310 * is often not related to the path where winbindd is actually run
1313 dump_core_setup("winbindd");
1315 if (is_daemon
&& interactive
) {
1316 d_fprintf(stderr
,"\nERROR: "
1317 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
1318 poptPrintUsage(pc
, stderr
, 0);
1322 if (log_stdout
&& Fork
) {
1323 d_fprintf(stderr
, "\nERROR: "
1324 "Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n\n");
1325 poptPrintUsage(pc
, stderr
, 0);
1329 poptFreeContext(pc
);
1331 if (!override_logfile
) {
1333 if (asprintf(&lfile
,"%s/log.winbindd",
1334 get_dyn_LOGFILEBASE()) > 0) {
1335 lp_set_logfile(lfile
);
1340 setup_logging("winbindd", DEBUG_STDOUT
);
1342 setup_logging("winbindd", DEBUG_FILE
);
1346 DEBUG(0,("winbindd version %s started.\n", samba_version_string()));
1347 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1349 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1350 DEBUG(0, ("error opening config file\n"));
1353 /* After parsing the configuration file we setup the core path one more time
1354 * as the log file might have been set in the configuration and cores's
1355 * path is by default basename(lp_logfile()).
1357 dump_core_setup("winbindd");
1359 /* Initialise messaging system */
1361 if (winbind_messaging_context() == NULL
) {
1365 if (!reload_services_file(NULL
)) {
1366 DEBUG(0, ("error opening config file\n"));
1370 if (!directory_exist(lp_lockdir())) {
1371 mkdir(lp_lockdir(), 0755);
1381 if (!secrets_init()) {
1383 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1387 /* Unblock all signals we are interested in as they may have been
1388 blocked by the parent process. */
1390 BlockSignals(False
, SIGINT
);
1391 BlockSignals(False
, SIGQUIT
);
1392 BlockSignals(False
, SIGTERM
);
1393 BlockSignals(False
, SIGUSR1
);
1394 BlockSignals(False
, SIGUSR2
);
1395 BlockSignals(False
, SIGHUP
);
1396 BlockSignals(False
, SIGCHLD
);
1399 become_daemon(Fork
, no_process_group
, log_stdout
);
1401 pidfile_create("winbindd");
1405 * If we're interactive we want to set our own process group for
1406 * signal management.
1408 if (interactive
&& !no_process_group
)
1409 setpgid( (pid_t
)0, (pid_t
)0);
1414 /* Don't use winbindd_reinit_after_fork here as
1415 * we're just starting up and haven't created any
1416 * winbindd-specific resources we must free yet. JRA.
1419 status
= reinit_after_fork(winbind_messaging_context(),
1420 winbind_event_context(),
1421 procid_self(), false);
1422 if (!NT_STATUS_IS_OK(status
)) {
1423 DEBUG(0,("reinit_after_fork() failed\n"));
1427 winbindd_register_handlers();
1429 status
= init_system_info();
1430 if (!NT_STATUS_IS_OK(status
)) {
1431 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1432 nt_errstr(status
)));
1436 rpc_lsarpc_init(NULL
);
1437 rpc_samr_init(NULL
);
1439 winbindd_init_addrchange(NULL
, winbind_event_context(),
1440 winbind_messaging_context());
1442 /* setup listen sockets */
1444 if (!winbindd_setup_listeners()) {
1445 DEBUG(0,("winbindd_setup_listeners() failed\n"));
1450 /* Loop waiting for requests */
1452 frame
= talloc_stackframe();
1454 if (tevent_loop_once(winbind_event_context()) == -1) {
1455 DEBUG(1, ("tevent_loop_once() failed: %s\n",