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_global(get_dyn_CONFIGFILE());
91 static void winbindd_status(void)
93 struct winbindd_cli_state
*tmp
;
95 DEBUG(0, ("winbindd status:\n"));
97 /* Print client state information */
99 DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
101 if (DEBUGLEVEL
>= 2 && winbindd_num_clients()) {
102 DEBUG(2, ("\tclient list:\n"));
103 for(tmp
= winbindd_client_list(); tmp
; tmp
= tmp
->next
) {
104 DEBUGADD(2, ("\t\tpid %lu, sock %d (%s)\n",
105 (unsigned long)tmp
->pid
, tmp
->sock
,
106 client_is_idle(tmp
) ? "idle" : "active"));
111 /* Flush client cache */
113 static void flush_caches(void)
115 /* We need to invalidate cached user list entries on a SIGHUP
116 otherwise cached access denied errors due to restrict anonymous
117 hang around until the sequence number changes. */
119 if (!wcache_invalidate_cache()) {
120 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
121 if (!winbindd_cache_validate_and_initialize()) {
127 static void flush_caches_noinit(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 * Skip uninitialized domains when flush cache.
135 * If domain is not initialized, it means it is never
136 * used or never become online. look, wcache_invalidate_cache()
137 * -> get_cache() -> init_dc_connection(). It causes a lot of traffic
138 * for unused domains and large traffic for primay domain's DC if there
142 if (!wcache_invalidate_cache_noinit()) {
143 DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
144 if (!winbindd_cache_validate_and_initialize()) {
150 /* Handle the signal by unlinking socket and exiting */
152 static void terminate(bool is_parent
)
155 /* When parent goes away we should
156 * remove the socket file. Not so
157 * when children terminate.
161 if (asprintf(&path
, "%s/%s",
162 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME
) > 0) {
170 trustdom_cache_shutdown();
172 gencache_stabilize();
176 TALLOC_CTX
*mem_ctx
= talloc_init("end_description");
177 char *description
= talloc_describe_all(mem_ctx
);
179 DEBUG(3, ("tallocs left:\n%s\n", description
));
180 talloc_destroy(mem_ctx
);
185 serverid_deregister(procid_self());
192 static void winbindd_sig_term_handler(struct tevent_context
*ev
,
193 struct tevent_signal
*se
,
199 bool *is_parent
= talloc_get_type_abort(private_data
, bool);
201 DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
202 signum
, (int)*is_parent
));
203 terminate(*is_parent
);
206 bool winbindd_setup_sig_term_handler(bool parent
)
208 struct tevent_signal
*se
;
211 is_parent
= talloc(winbind_event_context(), bool);
218 se
= tevent_add_signal(winbind_event_context(),
221 winbindd_sig_term_handler
,
224 DEBUG(0,("failed to setup SIGTERM handler"));
225 talloc_free(is_parent
);
229 se
= tevent_add_signal(winbind_event_context(),
232 winbindd_sig_term_handler
,
235 DEBUG(0,("failed to setup SIGINT handler"));
236 talloc_free(is_parent
);
240 se
= tevent_add_signal(winbind_event_context(),
243 winbindd_sig_term_handler
,
246 DEBUG(0,("failed to setup SIGINT handler"));
247 talloc_free(is_parent
);
254 static void winbindd_sig_hup_handler(struct tevent_context
*ev
,
255 struct tevent_signal
*se
,
261 const char *file
= (const char *)private_data
;
263 DEBUG(1,("Reloading services after SIGHUP\n"));
264 flush_caches_noinit();
265 reload_services_file(file
);
268 bool winbindd_setup_sig_hup_handler(const char *lfile
)
270 struct tevent_signal
*se
;
274 file
= talloc_strdup(winbind_event_context(),
281 se
= tevent_add_signal(winbind_event_context(),
282 winbind_event_context(),
284 winbindd_sig_hup_handler
,
293 static void winbindd_sig_chld_handler(struct tevent_context
*ev
,
294 struct tevent_signal
*se
,
302 while ((pid
= sys_waitpid(-1, NULL
, WNOHANG
)) > 0) {
303 winbind_child_died(pid
);
307 static bool winbindd_setup_sig_chld_handler(void)
309 struct tevent_signal
*se
;
311 se
= tevent_add_signal(winbind_event_context(),
312 winbind_event_context(),
314 winbindd_sig_chld_handler
,
323 static void winbindd_sig_usr2_handler(struct tevent_context
*ev
,
324 struct tevent_signal
*se
,
333 static bool winbindd_setup_sig_usr2_handler(void)
335 struct tevent_signal
*se
;
337 se
= tevent_add_signal(winbind_event_context(),
338 winbind_event_context(),
340 winbindd_sig_usr2_handler
,
349 /* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
350 static void msg_reload_services(struct messaging_context
*msg
,
353 struct server_id server_id
,
356 /* Flush various caches */
358 reload_services_file((const char *) private_data
);
361 /* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
362 static void msg_shutdown(struct messaging_context
*msg
,
365 struct server_id server_id
,
368 /* only the parent waits for this message */
369 DEBUG(0,("Got shutdown message\n"));
374 static void winbind_msg_validate_cache(struct messaging_context
*msg_ctx
,
377 struct server_id server_id
,
384 DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
388 * call the validation code from a child:
389 * so we don't block the main winbindd and the validation
390 * code can safely use fork/waitpid...
392 child_pid
= sys_fork();
394 if (child_pid
== -1) {
395 DEBUG(1, ("winbind_msg_validate_cache: Could not fork: %s\n",
400 if (child_pid
!= 0) {
402 DEBUG(5, ("winbind_msg_validate_cache: child created with "
403 "pid %d.\n", (int)child_pid
));
409 status
= winbindd_reinit_after_fork(NULL
, NULL
);
410 if (!NT_STATUS_IS_OK(status
)) {
411 DEBUG(1, ("winbindd_reinit_after_fork failed: %s\n",
416 /* install default SIGCHLD handler: validation code uses fork/waitpid */
417 CatchSignal(SIGCHLD
, SIG_DFL
);
419 ret
= (uint8
)winbindd_validate_cache_nobackup();
420 DEBUG(10, ("winbindd_msg_validata_cache: got return value %d\n", ret
));
421 messaging_send_buf(msg_ctx
, server_id
, MSG_WINBIND_VALIDATE_CACHE
, &ret
,
426 static struct winbindd_dispatch_table
{
427 enum winbindd_cmd cmd
;
428 void (*fn
)(struct winbindd_cli_state
*state
);
429 const char *winbindd_cmd_name
;
430 } dispatch_table
[] = {
432 /* Enumeration functions */
434 { WINBINDD_LIST_TRUSTDOM
, winbindd_list_trusted_domains
,
439 { WINBINDD_INFO
, winbindd_info
, "INFO" },
440 { WINBINDD_INTERFACE_VERSION
, winbindd_interface_version
,
441 "INTERFACE_VERSION" },
442 { WINBINDD_DOMAIN_NAME
, winbindd_domain_name
, "DOMAIN_NAME" },
443 { WINBINDD_DOMAIN_INFO
, winbindd_domain_info
, "DOMAIN_INFO" },
444 { WINBINDD_DC_INFO
, winbindd_dc_info
, "DC_INFO" },
445 { WINBINDD_NETBIOS_NAME
, winbindd_netbios_name
, "NETBIOS_NAME" },
446 { WINBINDD_PRIV_PIPE_DIR
, winbindd_priv_pipe_dir
,
447 "WINBINDD_PRIV_PIPE_DIR" },
449 /* Credential cache access */
450 { WINBINDD_CCACHE_NTLMAUTH
, winbindd_ccache_ntlm_auth
, "NTLMAUTH" },
451 { WINBINDD_CCACHE_SAVE
, winbindd_ccache_save
, "CCACHE_SAVE" },
455 { WINBINDD_NUM_CMDS
, NULL
, "NONE" }
458 struct winbindd_async_dispatch_table
{
459 enum winbindd_cmd cmd
;
460 const char *cmd_name
;
461 struct tevent_req
*(*send_req
)(TALLOC_CTX
*mem_ctx
,
462 struct tevent_context
*ev
,
463 struct winbindd_cli_state
*cli
,
464 struct winbindd_request
*request
);
465 NTSTATUS (*recv_req
)(struct tevent_req
*req
,
466 struct winbindd_response
*presp
);
469 static struct winbindd_async_dispatch_table async_nonpriv_table
[] = {
470 { WINBINDD_PING
, "PING",
471 wb_ping_send
, wb_ping_recv
},
472 { WINBINDD_LOOKUPSID
, "LOOKUPSID",
473 winbindd_lookupsid_send
, winbindd_lookupsid_recv
},
474 { WINBINDD_LOOKUPSIDS
, "LOOKUPSIDS",
475 winbindd_lookupsids_send
, winbindd_lookupsids_recv
},
476 { WINBINDD_LOOKUPNAME
, "LOOKUPNAME",
477 winbindd_lookupname_send
, winbindd_lookupname_recv
},
478 { WINBINDD_SID_TO_UID
, "SID_TO_UID",
479 winbindd_sid_to_uid_send
, winbindd_sid_to_uid_recv
},
480 { WINBINDD_SID_TO_GID
, "SID_TO_GID",
481 winbindd_sid_to_gid_send
, winbindd_sid_to_gid_recv
},
482 { WINBINDD_UID_TO_SID
, "UID_TO_SID",
483 winbindd_uid_to_sid_send
, winbindd_uid_to_sid_recv
},
484 { WINBINDD_GID_TO_SID
, "GID_TO_SID",
485 winbindd_gid_to_sid_send
, winbindd_gid_to_sid_recv
},
486 { WINBINDD_SIDS_TO_XIDS
, "SIDS_TO_XIDS",
487 winbindd_sids_to_xids_send
, winbindd_sids_to_xids_recv
},
488 { WINBINDD_GETPWSID
, "GETPWSID",
489 winbindd_getpwsid_send
, winbindd_getpwsid_recv
},
490 { WINBINDD_GETPWNAM
, "GETPWNAM",
491 winbindd_getpwnam_send
, winbindd_getpwnam_recv
},
492 { WINBINDD_GETPWUID
, "GETPWUID",
493 winbindd_getpwuid_send
, winbindd_getpwuid_recv
},
494 { WINBINDD_GETSIDALIASES
, "GETSIDALIASES",
495 winbindd_getsidaliases_send
, winbindd_getsidaliases_recv
},
496 { WINBINDD_GETUSERDOMGROUPS
, "GETUSERDOMGROUPS",
497 winbindd_getuserdomgroups_send
, winbindd_getuserdomgroups_recv
},
498 { WINBINDD_GETGROUPS
, "GETGROUPS",
499 winbindd_getgroups_send
, winbindd_getgroups_recv
},
500 { WINBINDD_SHOW_SEQUENCE
, "SHOW_SEQUENCE",
501 winbindd_show_sequence_send
, winbindd_show_sequence_recv
},
502 { WINBINDD_GETGRGID
, "GETGRGID",
503 winbindd_getgrgid_send
, winbindd_getgrgid_recv
},
504 { WINBINDD_GETGRNAM
, "GETGRNAM",
505 winbindd_getgrnam_send
, winbindd_getgrnam_recv
},
506 { WINBINDD_GETUSERSIDS
, "GETUSERSIDS",
507 winbindd_getusersids_send
, winbindd_getusersids_recv
},
508 { WINBINDD_LOOKUPRIDS
, "LOOKUPRIDS",
509 winbindd_lookuprids_send
, winbindd_lookuprids_recv
},
510 { WINBINDD_SETPWENT
, "SETPWENT",
511 winbindd_setpwent_send
, winbindd_setpwent_recv
},
512 { WINBINDD_GETPWENT
, "GETPWENT",
513 winbindd_getpwent_send
, winbindd_getpwent_recv
},
514 { WINBINDD_ENDPWENT
, "ENDPWENT",
515 winbindd_endpwent_send
, winbindd_endpwent_recv
},
516 { WINBINDD_DSGETDCNAME
, "DSGETDCNAME",
517 winbindd_dsgetdcname_send
, winbindd_dsgetdcname_recv
},
518 { WINBINDD_GETDCNAME
, "GETDCNAME",
519 winbindd_getdcname_send
, winbindd_getdcname_recv
},
520 { WINBINDD_SETGRENT
, "SETGRENT",
521 winbindd_setgrent_send
, winbindd_setgrent_recv
},
522 { WINBINDD_GETGRENT
, "GETGRENT",
523 winbindd_getgrent_send
, winbindd_getgrent_recv
},
524 { WINBINDD_ENDGRENT
, "ENDGRENT",
525 winbindd_endgrent_send
, winbindd_endgrent_recv
},
526 { WINBINDD_LIST_USERS
, "LIST_USERS",
527 winbindd_list_users_send
, winbindd_list_users_recv
},
528 { WINBINDD_LIST_GROUPS
, "LIST_GROUPS",
529 winbindd_list_groups_send
, winbindd_list_groups_recv
},
530 { WINBINDD_CHECK_MACHACC
, "CHECK_MACHACC",
531 winbindd_check_machine_acct_send
, winbindd_check_machine_acct_recv
},
532 { WINBINDD_PING_DC
, "PING_DC",
533 winbindd_ping_dc_send
, winbindd_ping_dc_recv
},
534 { WINBINDD_PAM_AUTH
, "PAM_AUTH",
535 winbindd_pam_auth_send
, winbindd_pam_auth_recv
},
536 { WINBINDD_PAM_LOGOFF
, "PAM_LOGOFF",
537 winbindd_pam_logoff_send
, winbindd_pam_logoff_recv
},
538 { WINBINDD_PAM_CHAUTHTOK
, "PAM_CHAUTHTOK",
539 winbindd_pam_chauthtok_send
, winbindd_pam_chauthtok_recv
},
540 { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP
, "PAM_CHNG_PSWD_AUTH_CRAP",
541 winbindd_pam_chng_pswd_auth_crap_send
,
542 winbindd_pam_chng_pswd_auth_crap_recv
},
543 { WINBINDD_WINS_BYIP
, "WINS_BYIP",
544 winbindd_wins_byip_send
, winbindd_wins_byip_recv
},
545 { WINBINDD_WINS_BYNAME
, "WINS_BYNAME",
546 winbindd_wins_byname_send
, winbindd_wins_byname_recv
},
548 { 0, NULL
, NULL
, NULL
}
551 static struct winbindd_async_dispatch_table async_priv_table
[] = {
552 { WINBINDD_ALLOCATE_UID
, "ALLOCATE_UID",
553 winbindd_allocate_uid_send
, winbindd_allocate_uid_recv
},
554 { WINBINDD_ALLOCATE_GID
, "ALLOCATE_GID",
555 winbindd_allocate_gid_send
, winbindd_allocate_gid_recv
},
556 { WINBINDD_CHANGE_MACHACC
, "CHANGE_MACHACC",
557 winbindd_change_machine_acct_send
, winbindd_change_machine_acct_recv
},
558 { WINBINDD_PAM_AUTH_CRAP
, "PAM_AUTH_CRAP",
559 winbindd_pam_auth_crap_send
, winbindd_pam_auth_crap_recv
},
561 { 0, NULL
, NULL
, NULL
}
564 static void wb_request_done(struct tevent_req
*req
);
566 static void process_request(struct winbindd_cli_state
*state
)
568 struct winbindd_dispatch_table
*table
= dispatch_table
;
569 struct winbindd_async_dispatch_table
*atable
;
571 state
->mem_ctx
= talloc_named(state
, 0, "winbind request");
572 if (state
->mem_ctx
== NULL
)
575 /* Remember who asked us. */
576 state
->pid
= state
->request
->pid
;
578 state
->cmd_name
= "unknown request";
579 state
->recv_fn
= NULL
;
581 /* Process command */
583 for (atable
= async_nonpriv_table
; atable
->send_req
; atable
+= 1) {
584 if (state
->request
->cmd
== atable
->cmd
) {
589 if ((atable
->send_req
== NULL
) && state
->privileged
) {
590 for (atable
= async_priv_table
; atable
->send_req
;
592 if (state
->request
->cmd
== atable
->cmd
) {
598 if (atable
->send_req
!= NULL
) {
599 struct tevent_req
*req
;
601 state
->cmd_name
= atable
->cmd_name
;
602 state
->recv_fn
= atable
->recv_req
;
604 DEBUG(10, ("process_request: Handling async request %d:%s\n",
605 (int)state
->pid
, state
->cmd_name
));
607 req
= atable
->send_req(state
->mem_ctx
, winbind_event_context(),
608 state
, state
->request
);
610 DEBUG(0, ("process_request: atable->send failed for "
611 "%s\n", atable
->cmd_name
));
612 request_error(state
);
615 tevent_req_set_callback(req
, wb_request_done
, state
);
619 state
->response
= talloc_zero(state
->mem_ctx
,
620 struct winbindd_response
);
621 if (state
->response
== NULL
) {
622 DEBUG(10, ("talloc failed\n"));
623 remove_client(state
);
626 state
->response
->result
= WINBINDD_PENDING
;
627 state
->response
->length
= sizeof(struct winbindd_response
);
629 for (table
= dispatch_table
; table
->fn
; table
++) {
630 if (state
->request
->cmd
== table
->cmd
) {
631 DEBUG(10,("process_request: request fn %s\n",
632 table
->winbindd_cmd_name
));
633 state
->cmd_name
= table
->winbindd_cmd_name
;
640 DEBUG(10,("process_request: unknown request fn number %d\n",
641 (int)state
->request
->cmd
));
642 request_error(state
);
646 static void wb_request_done(struct tevent_req
*req
)
648 struct winbindd_cli_state
*state
= tevent_req_callback_data(
649 req
, struct winbindd_cli_state
);
652 state
->response
= talloc_zero(state
->mem_ctx
,
653 struct winbindd_response
);
654 if (state
->response
== NULL
) {
655 DEBUG(0, ("wb_request_done[%d:%s]: talloc_zero failed - removing client\n",
656 (int)state
->pid
, state
->cmd_name
));
657 remove_client(state
);
660 state
->response
->result
= WINBINDD_PENDING
;
661 state
->response
->length
= sizeof(struct winbindd_response
);
663 status
= state
->recv_fn(req
, state
->response
);
666 DEBUG(10,("wb_request_done[%d:%s]: %s\n",
667 (int)state
->pid
, state
->cmd_name
, nt_errstr(status
)));
669 if (!NT_STATUS_IS_OK(status
)) {
670 request_error(state
);
677 * This is the main event loop of winbind requests. It goes through a
678 * state-machine of 3 read/write requests, 4 if you have extra data to send.
680 * An idle winbind client has a read request of 4 bytes outstanding,
681 * finalizing function is request_len_recv, checking the length. request_recv
682 * then processes the packet. The processing function then at some point has
683 * to call request_finished which schedules sending the response.
686 static void request_finished(struct winbindd_cli_state
*state
);
688 static void winbind_client_request_read(struct tevent_req
*req
);
689 static void winbind_client_response_written(struct tevent_req
*req
);
691 static void request_finished(struct winbindd_cli_state
*state
)
693 struct tevent_req
*req
;
695 TALLOC_FREE(state
->request
);
697 req
= wb_resp_write_send(state
, winbind_event_context(),
698 state
->out_queue
, state
->sock
,
701 DEBUG(10,("request_finished[%d:%s]: wb_resp_write_send() failed\n",
702 (int)state
->pid
, state
->cmd_name
));
703 remove_client(state
);
706 tevent_req_set_callback(req
, winbind_client_response_written
, state
);
709 static void winbind_client_response_written(struct tevent_req
*req
)
711 struct winbindd_cli_state
*state
= tevent_req_callback_data(
712 req
, struct winbindd_cli_state
);
716 ret
= wb_resp_write_recv(req
, &err
);
721 DEBUG(2, ("Could not write response[%d:%s] to client: %s\n",
722 (int)state
->pid
, state
->cmd_name
, strerror(err
)));
723 remove_client(state
);
727 DEBUG(10,("winbind_client_response_written[%d:%s]: delivered response "
728 "to client\n", (int)state
->pid
, state
->cmd_name
));
730 TALLOC_FREE(state
->mem_ctx
);
731 state
->response
= NULL
;
732 state
->cmd_name
= "no request";
733 state
->recv_fn
= NULL
;
735 req
= wb_req_read_send(state
, winbind_event_context(), state
->sock
,
736 WINBINDD_MAX_EXTRA_DATA
);
738 remove_client(state
);
741 tevent_req_set_callback(req
, winbind_client_request_read
, state
);
744 void request_error(struct winbindd_cli_state
*state
)
746 SMB_ASSERT(state
->response
->result
== WINBINDD_PENDING
);
747 state
->response
->result
= WINBINDD_ERROR
;
748 request_finished(state
);
751 void request_ok(struct winbindd_cli_state
*state
)
753 SMB_ASSERT(state
->response
->result
== WINBINDD_PENDING
);
754 state
->response
->result
= WINBINDD_OK
;
755 request_finished(state
);
758 /* Process a new connection by adding it to the client connection list */
760 static void new_connection(int listen_sock
, bool privileged
)
762 struct sockaddr_un sunaddr
;
763 struct winbindd_cli_state
*state
;
764 struct tevent_req
*req
;
768 /* Accept connection */
770 len
= sizeof(sunaddr
);
772 sock
= accept(listen_sock
, (struct sockaddr
*)(void *)&sunaddr
, &len
);
775 if (errno
!= EINTR
) {
776 DEBUG(0, ("Faild to accept socket - %s\n",
782 DEBUG(6,("accepted socket %d\n", sock
));
784 /* Create new connection structure */
786 if ((state
= talloc_zero(NULL
, struct winbindd_cli_state
)) == NULL
) {
793 state
->out_queue
= tevent_queue_create(state
, "winbind client reply");
794 if (state
->out_queue
== NULL
) {
800 state
->last_access
= time(NULL
);
802 state
->privileged
= privileged
;
804 req
= wb_req_read_send(state
, winbind_event_context(), state
->sock
,
805 WINBINDD_MAX_EXTRA_DATA
);
811 tevent_req_set_callback(req
, winbind_client_request_read
, state
);
813 /* Add to connection list */
815 winbindd_add_client(state
);
818 static void winbind_client_request_read(struct tevent_req
*req
)
820 struct winbindd_cli_state
*state
= tevent_req_callback_data(
821 req
, struct winbindd_cli_state
);
825 ret
= wb_req_read_recv(req
, state
, &state
->request
, &err
);
829 DEBUG(6, ("closing socket %d, client exited\n",
832 DEBUG(2, ("Could not read client request from fd %d: "
833 "%s\n", state
->sock
, strerror(err
)));
837 remove_client(state
);
840 process_request(state
);
843 /* Remove a client connection from client connection list */
845 static void remove_client(struct winbindd_cli_state
*state
)
850 /* It's a dead client - hold a funeral */
856 if (state
->sock
!= -1) {
857 /* tell client, we are closing ... */
858 nwritten
= write(state
->sock
, &c
, sizeof(c
));
859 if (nwritten
== -1) {
860 DEBUG(2, ("final write to client failed: %s\n",
870 TALLOC_FREE(state
->mem_ctx
);
872 /* Remove from list and free */
874 winbindd_remove_client(state
);
878 /* Is a client idle? */
880 static bool client_is_idle(struct winbindd_cli_state
*state
) {
881 return (state
->response
== NULL
&&
882 !state
->pwent_state
&& !state
->grent_state
);
885 /* Shutdown client connection which has been idle for the longest time */
887 static bool remove_idle_client(void)
889 struct winbindd_cli_state
*state
, *remove_state
= NULL
;
890 time_t last_access
= 0;
893 for (state
= winbindd_client_list(); state
; state
= state
->next
) {
894 if (client_is_idle(state
)) {
896 if (!last_access
|| state
->last_access
< last_access
) {
897 last_access
= state
->last_access
;
898 remove_state
= state
;
904 DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
905 nidle
, remove_state
->sock
, (unsigned int)remove_state
->pid
));
906 remove_client(remove_state
);
913 struct winbindd_listen_state
{
918 static void winbindd_listen_fde_handler(struct tevent_context
*ev
,
919 struct tevent_fd
*fde
,
923 struct winbindd_listen_state
*s
= talloc_get_type_abort(private_data
,
924 struct winbindd_listen_state
);
926 while (winbindd_num_clients() > lp_winbind_max_clients() - 1) {
927 DEBUG(5,("winbindd: Exceeding %d client "
928 "connections, removing idle "
929 "connection.\n", lp_winbind_max_clients()));
930 if (!remove_idle_client()) {
931 DEBUG(0,("winbindd: Exceeding %d "
932 "client connections, no idle "
933 "connection found\n",
934 lp_winbind_max_clients()));
938 new_connection(s
->fd
, s
->privileged
);
942 * Winbindd socket accessor functions
945 const char *get_winbind_pipe_dir(void)
947 return lp_parm_const_string(-1, "winbindd", "socket dir", get_dyn_WINBINDD_SOCKET_DIR());
950 char *get_winbind_priv_pipe_dir(void)
952 return state_path(WINBINDD_PRIV_SOCKET_SUBDIR
);
955 static bool winbindd_setup_listeners(void)
957 struct winbindd_listen_state
*pub_state
= NULL
;
958 struct winbindd_listen_state
*priv_state
= NULL
;
959 struct tevent_fd
*fde
;
961 pub_state
= talloc(winbind_event_context(),
962 struct winbindd_listen_state
);
967 pub_state
->privileged
= false;
968 pub_state
->fd
= create_pipe_sock(
969 get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME
, 0755);
970 if (pub_state
->fd
== -1) {
974 fde
= tevent_add_fd(winbind_event_context(), pub_state
, pub_state
->fd
,
975 TEVENT_FD_READ
, winbindd_listen_fde_handler
,
978 close(pub_state
->fd
);
981 tevent_fd_set_auto_close(fde
);
983 priv_state
= talloc(winbind_event_context(),
984 struct winbindd_listen_state
);
989 priv_state
->privileged
= true;
990 priv_state
->fd
= create_pipe_sock(
991 get_winbind_priv_pipe_dir(), WINBINDD_SOCKET_NAME
, 0750);
992 if (priv_state
->fd
== -1) {
996 fde
= tevent_add_fd(winbind_event_context(), priv_state
,
997 priv_state
->fd
, TEVENT_FD_READ
,
998 winbindd_listen_fde_handler
, priv_state
);
1000 close(priv_state
->fd
);
1003 tevent_fd_set_auto_close(fde
);
1007 TALLOC_FREE(pub_state
);
1008 TALLOC_FREE(priv_state
);
1012 bool winbindd_use_idmap_cache(void)
1014 return !opt_nocache
;
1017 bool winbindd_use_cache(void)
1019 return !opt_nocache
;
1022 void winbindd_register_handlers(void)
1024 /* Setup signal handlers */
1026 if (!winbindd_setup_sig_term_handler(true))
1028 if (!winbindd_setup_sig_hup_handler(NULL
))
1030 if (!winbindd_setup_sig_chld_handler())
1032 if (!winbindd_setup_sig_usr2_handler())
1035 CatchSignal(SIGPIPE
, SIG_IGN
); /* Ignore sigpipe */
1038 * Ensure all cache and idmap caches are consistent
1039 * and initialized before we startup.
1041 if (!winbindd_cache_validate_and_initialize()) {
1045 /* get broadcast messages */
1047 if (!serverid_register(procid_self(),
1048 FLAG_MSG_GENERAL
|FLAG_MSG_DBWRAP
)) {
1049 DEBUG(1, ("Could not register myself in serverid.tdb\n"));
1053 /* React on 'smbcontrol winbindd reload-config' in the same way
1054 as to SIGHUP signal */
1055 messaging_register(winbind_messaging_context(), NULL
,
1056 MSG_SMB_CONF_UPDATED
, msg_reload_services
);
1057 messaging_register(winbind_messaging_context(), NULL
,
1058 MSG_SHUTDOWN
, msg_shutdown
);
1060 /* Handle online/offline messages. */
1061 messaging_register(winbind_messaging_context(), NULL
,
1062 MSG_WINBIND_OFFLINE
, winbind_msg_offline
);
1063 messaging_register(winbind_messaging_context(), NULL
,
1064 MSG_WINBIND_ONLINE
, winbind_msg_online
);
1065 messaging_register(winbind_messaging_context(), NULL
,
1066 MSG_WINBIND_ONLINESTATUS
, winbind_msg_onlinestatus
);
1068 messaging_register(winbind_messaging_context(), NULL
,
1069 MSG_DUMP_EVENT_LIST
, winbind_msg_dump_event_list
);
1071 messaging_register(winbind_messaging_context(), NULL
,
1072 MSG_WINBIND_VALIDATE_CACHE
,
1073 winbind_msg_validate_cache
);
1075 messaging_register(winbind_messaging_context(), NULL
,
1076 MSG_WINBIND_DUMP_DOMAIN_LIST
,
1077 winbind_msg_dump_domain_list
);
1079 messaging_register(winbind_messaging_context(), NULL
,
1080 MSG_WINBIND_IP_DROPPED
,
1081 winbind_msg_ip_dropped_parent
);
1083 /* Register handler for MSG_DEBUG. */
1084 messaging_register(winbind_messaging_context(), NULL
,
1088 netsamlogon_cache_init(); /* Non-critical */
1090 /* clear the cached list of trusted domains */
1094 if (!init_domain_list()) {
1095 DEBUG(0,("unable to initialize domain list\n"));
1100 init_locator_child();
1102 smb_nscd_flush_user_cache();
1103 smb_nscd_flush_group_cache();
1105 if (lp_allow_trusted_domains()) {
1106 if (tevent_add_timer(winbind_event_context(), NULL
, timeval_zero(),
1107 rescan_trusted_domains
, NULL
) == NULL
) {
1108 DEBUG(0, ("Could not trigger rescan_trusted_domains()\n"));
1115 struct winbindd_addrchanged_state
{
1116 struct addrchange_context
*ctx
;
1117 struct tevent_context
*ev
;
1118 struct messaging_context
*msg_ctx
;
1121 static void winbindd_addr_changed(struct tevent_req
*req
);
1123 static void winbindd_init_addrchange(TALLOC_CTX
*mem_ctx
,
1124 struct tevent_context
*ev
,
1125 struct messaging_context
*msg_ctx
)
1127 struct winbindd_addrchanged_state
*state
;
1128 struct tevent_req
*req
;
1131 state
= talloc(mem_ctx
, struct winbindd_addrchanged_state
);
1132 if (state
== NULL
) {
1133 DEBUG(10, ("talloc failed\n"));
1137 state
->msg_ctx
= msg_ctx
;
1139 status
= addrchange_context_create(state
, &state
->ctx
);
1140 if (!NT_STATUS_IS_OK(status
)) {
1141 DEBUG(10, ("addrchange_context_create failed: %s\n",
1142 nt_errstr(status
)));
1146 req
= addrchange_send(state
, ev
, state
->ctx
);
1148 DEBUG(0, ("addrchange_send failed\n"));
1152 tevent_req_set_callback(req
, winbindd_addr_changed
, state
);
1155 static void winbindd_addr_changed(struct tevent_req
*req
)
1157 struct winbindd_addrchanged_state
*state
= tevent_req_callback_data(
1158 req
, struct winbindd_addrchanged_state
);
1159 enum addrchange_type type
;
1160 struct sockaddr_storage addr
;
1163 status
= addrchange_recv(req
, &type
, &addr
);
1165 if (!NT_STATUS_IS_OK(status
)) {
1166 DEBUG(10, ("addrchange_recv failed: %s, stop listening\n",
1167 nt_errstr(status
)));
1171 if (type
== ADDRCHANGE_DEL
) {
1172 char addrstr
[INET6_ADDRSTRLEN
];
1175 print_sockaddr(addrstr
, sizeof(addrstr
), &addr
);
1177 DEBUG(3, ("winbindd: kernel (AF_NETLINK) dropped ip %s\n",
1180 blob
= data_blob_const(addrstr
, strlen(addrstr
)+1);
1182 status
= messaging_send(state
->msg_ctx
,
1183 messaging_server_id(state
->msg_ctx
),
1184 MSG_WINBIND_IP_DROPPED
, &blob
);
1185 if (!NT_STATUS_IS_OK(status
)) {
1186 DEBUG(10, ("messaging_send failed: %s - ignoring\n",
1187 nt_errstr(status
)));
1190 req
= addrchange_send(state
, state
->ev
, state
->ctx
);
1192 DEBUG(0, ("addrchange_send failed\n"));
1196 tevent_req_set_callback(req
, winbindd_addr_changed
, state
);
1201 int main(int argc
, char **argv
, char **envp
)
1203 static bool is_daemon
= False
;
1204 static bool Fork
= True
;
1205 static bool log_stdout
= False
;
1206 static bool no_process_group
= False
;
1210 OPT_NO_PROCESS_GROUP
,
1213 struct poptOption long_options
[] = {
1215 { "stdout", 'S', POPT_ARG_NONE
, NULL
, OPT_LOG_STDOUT
, "Log to stdout" },
1216 { "foreground", 'F', POPT_ARG_NONE
, NULL
, OPT_FORK
, "Daemon in foreground mode" },
1217 { "no-process-group", 0, POPT_ARG_NONE
, NULL
, OPT_NO_PROCESS_GROUP
, "Don't create a new process group" },
1218 { "daemon", 'D', POPT_ARG_NONE
, NULL
, OPT_DAEMON
, "Become a daemon (default)" },
1219 { "interactive", 'i', POPT_ARG_NONE
, NULL
, 'i', "Interactive mode" },
1220 { "no-caching", 'n', POPT_ARG_NONE
, NULL
, 'n', "Disable caching" },
1230 * Do this before any other talloc operation
1232 talloc_enable_null_tracking();
1233 frame
= talloc_stackframe();
1235 setup_logging("winbindd", DEBUG_DEFAULT_STDOUT
);
1237 /* glibc (?) likes to print "User defined signal 1" and exit if a
1238 SIGUSR[12] is received before a handler is installed */
1240 CatchSignal(SIGUSR1
, SIG_IGN
);
1241 CatchSignal(SIGUSR2
, SIG_IGN
);
1244 dump_core_setup("winbindd", lp_logfile());
1248 /* Initialise for running in non-root mode */
1252 set_remote_machine_name("winbindd", False
);
1254 /* Set environment variable so we don't recursively call ourselves.
1255 This may also be useful interactively. */
1257 if ( !winbind_off() ) {
1258 DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
1262 /* Initialise samba/rpc client stuff */
1264 pc
= poptGetContext("winbindd", argc
, (const char **)argv
, long_options
, 0);
1266 while ((opt
= poptGetNextOpt(pc
)) != -1) {
1268 /* Don't become a daemon */
1280 case OPT_NO_PROCESS_GROUP
:
1281 no_process_group
= true;
1283 case OPT_LOG_STDOUT
:
1290 d_fprintf(stderr
, "\nInvalid option %s: %s\n\n",
1291 poptBadOption(pc
, 0), poptStrerror(opt
));
1292 poptPrintUsage(pc
, stderr
, 0);
1297 if (is_daemon
&& interactive
) {
1298 d_fprintf(stderr
,"\nERROR: "
1299 "Option -i|--interactive is not allowed together with -D|--daemon\n\n");
1300 poptPrintUsage(pc
, stderr
, 0);
1304 if (log_stdout
&& Fork
) {
1305 d_fprintf(stderr
, "\nERROR: "
1306 "Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n\n");
1307 poptPrintUsage(pc
, stderr
, 0);
1311 poptFreeContext(pc
);
1313 if (!override_logfile
) {
1315 if (asprintf(&lfile
,"%s/log.winbindd",
1316 get_dyn_LOGFILEBASE()) > 0) {
1317 lp_set_logfile(lfile
);
1323 setup_logging("winbindd", DEBUG_STDOUT
);
1325 setup_logging("winbindd", DEBUG_FILE
);
1329 DEBUG(0,("winbindd version %s started.\n", samba_version_string()));
1330 DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE
));
1332 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1333 DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
1337 /* Initialise messaging system */
1339 if (winbind_messaging_context() == NULL
) {
1343 if (!reload_services_file(NULL
)) {
1344 DEBUG(0, ("error opening config file\n"));
1348 if (!directory_exist(lp_lockdir())) {
1349 mkdir(lp_lockdir(), 0755);
1359 if (!secrets_init()) {
1361 DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1365 /* Unblock all signals we are interested in as they may have been
1366 blocked by the parent process. */
1368 BlockSignals(False
, SIGINT
);
1369 BlockSignals(False
, SIGQUIT
);
1370 BlockSignals(False
, SIGTERM
);
1371 BlockSignals(False
, SIGUSR1
);
1372 BlockSignals(False
, SIGUSR2
);
1373 BlockSignals(False
, SIGHUP
);
1374 BlockSignals(False
, SIGCHLD
);
1377 become_daemon(Fork
, no_process_group
, log_stdout
);
1379 pidfile_create("winbindd");
1383 * If we're interactive we want to set our own process group for
1384 * signal management.
1386 if (interactive
&& !no_process_group
)
1387 setpgid( (pid_t
)0, (pid_t
)0);
1392 /* Don't use winbindd_reinit_after_fork here as
1393 * we're just starting up and haven't created any
1394 * winbindd-specific resources we must free yet. JRA.
1397 status
= reinit_after_fork(winbind_messaging_context(),
1398 winbind_event_context(),
1399 procid_self(), false);
1400 if (!NT_STATUS_IS_OK(status
)) {
1401 DEBUG(0,("reinit_after_fork() failed\n"));
1405 winbindd_register_handlers();
1407 status
= init_system_info();
1408 if (!NT_STATUS_IS_OK(status
)) {
1409 DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
1410 nt_errstr(status
)));
1414 rpc_lsarpc_init(NULL
);
1415 rpc_samr_init(NULL
);
1417 winbindd_init_addrchange(NULL
, winbind_event_context(),
1418 winbind_messaging_context());
1420 /* setup listen sockets */
1422 if (!winbindd_setup_listeners()) {
1423 DEBUG(0,("winbindd_setup_listeners() failed\n"));
1428 /* Loop waiting for requests */
1430 frame
= talloc_stackframe();
1432 if (tevent_loop_once(winbind_event_context()) == -1) {
1433 DEBUG(1, ("tevent_loop_once() failed: %s\n",