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
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Copyright (C) Volker Lendecke 2004
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This program is free software; you can redistribute it and/or modify
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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
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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/>.
29
#define DBGC_CLASS DBGC_WINBIND
31
static bool opt_nocache = False;
32
static bool interactive = False;
34
extern bool override_logfile;
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struct event_context *winbind_event_context(void)
38
static struct event_context *ctx;
40
if (!ctx && !(ctx = event_context_init(NULL))) {
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smb_panic("Could not init winbind event context");
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struct messaging_context *winbind_messaging_context(void)
48
static struct messaging_context *ctx;
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ctx = messaging_init(NULL, server_id_self(),
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winbind_event_context());
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DEBUG(0, ("Could not init winbind messaging context.\n"));
60
/* Reload configuration */
62
static bool reload_services_file(const char *lfile)
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const char *fname = lp_configfile();
69
if (file_exist(fname) && !strcsequal(fname,get_dyn_CONFIGFILE())) {
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set_dyn_CONFIGFILE(fname);
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/* if this is a child, restore the logfile to the special
75
name - <domain>, idmap, etc. */
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if (lfile && *lfile) {
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lp_set_logfile(lfile);
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ret = lp_load(get_dyn_CONFIGFILE(),False,False,True,True);
90
/**************************************************************************** **
92
**************************************************************************** */
94
static void fault_quit(void)
99
static void winbindd_status(void)
101
struct winbindd_cli_state *tmp;
103
DEBUG(0, ("winbindd status:\n"));
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/* Print client state information */
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DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
109
if (DEBUGLEVEL >= 2 && winbindd_num_clients()) {
110
DEBUG(2, ("\tclient list:\n"));
111
for(tmp = winbindd_client_list(); tmp; tmp = tmp->next) {
112
DEBUGADD(2, ("\t\tpid %lu, sock %d\n",
113
(unsigned long)tmp->pid, tmp->sock));
118
/* Print winbindd status to log file */
120
static void print_winbindd_status(void)
125
/* Flush client cache */
127
static void flush_caches(void)
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/* We need to invalidate cached user list entries on a SIGHUP
130
otherwise cached access denied errors due to restrict anonymous
131
hang around until the sequence number changes. */
133
if (!wcache_invalidate_cache()) {
134
DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
135
if (!winbindd_cache_validate_and_initialize()) {
141
/* Handle the signal by unlinking socket and exiting */
143
static void terminate(bool is_parent)
146
/* When parent goes away we should
147
* remove the socket file. Not so
148
* when children terminate.
152
if (asprintf(&path, "%s/%s",
153
get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME) > 0) {
161
trustdom_cache_shutdown();
165
TALLOC_CTX *mem_ctx = talloc_init("end_description");
166
char *description = talloc_describe_all(mem_ctx);
168
DEBUG(3, ("tallocs left:\n%s\n", description));
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talloc_destroy(mem_ctx);
180
static void winbindd_sig_term_handler(struct tevent_context *ev,
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struct tevent_signal *se,
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bool *is_parent = talloc_get_type_abort(private_data, bool);
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DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
190
signum, (int)*is_parent));
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terminate(*is_parent);
194
bool winbindd_setup_sig_term_handler(bool parent)
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struct tevent_signal *se;
199
is_parent = talloc(winbind_event_context(), bool);
206
se = tevent_add_signal(winbind_event_context(),
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winbindd_sig_term_handler,
212
DEBUG(0,("failed to setup SIGTERM handler"));
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talloc_free(is_parent);
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se = tevent_add_signal(winbind_event_context(),
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winbindd_sig_term_handler,
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DEBUG(0,("failed to setup SIGINT handler"));
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talloc_free(is_parent);
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se = tevent_add_signal(winbind_event_context(),
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winbindd_sig_term_handler,
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DEBUG(0,("failed to setup SIGINT handler"));
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talloc_free(is_parent);
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static void winbindd_sig_hup_handler(struct tevent_context *ev,
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struct tevent_signal *se,
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const char *file = (const char *)private_data;
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DEBUG(1,("Reloading services after SIGHUP\n"));
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reload_services_file(file);
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bool winbindd_setup_sig_hup_handler(const char *lfile)
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struct tevent_signal *se;
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file = talloc_strdup(winbind_event_context(),
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se = tevent_add_signal(winbind_event_context(),
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winbind_event_context(),
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winbindd_sig_hup_handler,
281
static void winbindd_sig_chld_handler(struct tevent_context *ev,
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struct tevent_signal *se,
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while ((pid = sys_waitpid(-1, NULL, WNOHANG)) > 0) {
291
winbind_child_died(pid);
295
static bool winbindd_setup_sig_chld_handler(void)
297
struct tevent_signal *se;
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se = tevent_add_signal(winbind_event_context(),
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winbind_event_context(),
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winbindd_sig_chld_handler,
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static void winbindd_sig_usr2_handler(struct tevent_context *ev,
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struct tevent_signal *se,
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print_winbindd_status();
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static bool winbindd_setup_sig_usr2_handler(void)
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struct tevent_signal *se;
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se = tevent_add_signal(winbind_event_context(),
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winbind_event_context(),
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winbindd_sig_usr2_handler,
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/* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
338
static void msg_reload_services(struct messaging_context *msg,
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struct server_id server_id,
344
/* Flush various caches */
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reload_services_file((const char *) private_data);
349
/* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
350
static void msg_shutdown(struct messaging_context *msg,
353
struct server_id server_id,
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/* only the parent waits for this message */
357
DEBUG(0,("Got shutdown message\n"));
362
static void winbind_msg_validate_cache(struct messaging_context *msg_ctx,
365
struct server_id server_id,
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DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
375
* call the validation code from a child:
376
* so we don't block the main winbindd and the validation
377
* code can safely use fork/waitpid...
379
child_pid = sys_fork();
381
if (child_pid == -1) {
382
DEBUG(1, ("winbind_msg_validate_cache: Could not fork: %s\n",
387
if (child_pid != 0) {
389
DEBUG(5, ("winbind_msg_validate_cache: child created with "
390
"pid %d.\n", (int)child_pid));
396
if (!winbindd_reinit_after_fork(NULL)) {
400
/* install default SIGCHLD handler: validation code uses fork/waitpid */
401
CatchSignal(SIGCHLD, SIG_DFL);
403
ret = (uint8)winbindd_validate_cache_nobackup();
404
DEBUG(10, ("winbindd_msg_validata_cache: got return value %d\n", ret));
405
messaging_send_buf(msg_ctx, server_id, MSG_WINBIND_VALIDATE_CACHE, &ret,
410
static struct winbindd_dispatch_table {
411
enum winbindd_cmd cmd;
412
void (*fn)(struct winbindd_cli_state *state);
413
const char *winbindd_cmd_name;
414
} dispatch_table[] = {
418
{ WINBINDD_GETPWNAM, winbindd_getpwnam, "GETPWNAM" },
419
{ WINBINDD_GETPWUID, winbindd_getpwuid, "GETPWUID" },
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{ WINBINDD_GETPWSID, winbindd_getpwsid, "GETPWSID" },
422
{ WINBINDD_SETPWENT, winbindd_setpwent, "SETPWENT" },
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{ WINBINDD_ENDPWENT, winbindd_endpwent, "ENDPWENT" },
424
{ WINBINDD_GETPWENT, winbindd_getpwent, "GETPWENT" },
426
{ WINBINDD_GETGROUPS, winbindd_getgroups, "GETGROUPS" },
427
{ WINBINDD_GETUSERSIDS, winbindd_getusersids, "GETUSERSIDS" },
428
{ WINBINDD_GETUSERDOMGROUPS, winbindd_getuserdomgroups,
429
"GETUSERDOMGROUPS" },
430
{ WINBINDD_GETSIDALIASES, winbindd_getsidaliases,
431
"LOOKUPUSERALIASES" },
433
/* Group functions */
435
{ WINBINDD_GETGRNAM, winbindd_getgrnam, "GETGRNAM" },
436
{ WINBINDD_GETGRGID, winbindd_getgrgid, "GETGRGID" },
437
{ WINBINDD_SETGRENT, winbindd_setgrent, "SETGRENT" },
438
{ WINBINDD_ENDGRENT, winbindd_endgrent, "ENDGRENT" },
439
{ WINBINDD_GETGRENT, winbindd_getgrent, "GETGRENT" },
440
{ WINBINDD_GETGRLST, winbindd_getgrent, "GETGRLST" },
442
/* PAM auth functions */
444
{ WINBINDD_PAM_AUTH, winbindd_pam_auth, "PAM_AUTH" },
445
{ WINBINDD_PAM_AUTH_CRAP, winbindd_pam_auth_crap, "AUTH_CRAP" },
446
{ WINBINDD_PAM_CHAUTHTOK, winbindd_pam_chauthtok, "CHAUTHTOK" },
447
{ WINBINDD_PAM_LOGOFF, winbindd_pam_logoff, "PAM_LOGOFF" },
448
{ WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, winbindd_pam_chng_pswd_auth_crap, "CHNG_PSWD_AUTH_CRAP" },
450
/* Enumeration functions */
452
{ WINBINDD_LIST_USERS, winbindd_list_users, "LIST_USERS" },
453
{ WINBINDD_LIST_GROUPS, winbindd_list_groups, "LIST_GROUPS" },
454
{ WINBINDD_LIST_TRUSTDOM, winbindd_list_trusted_domains,
456
{ WINBINDD_SHOW_SEQUENCE, winbindd_show_sequence, "SHOW_SEQUENCE" },
458
/* SID related functions */
460
{ WINBINDD_LOOKUPSID, winbindd_lookupsid, "LOOKUPSID" },
461
{ WINBINDD_LOOKUPNAME, winbindd_lookupname, "LOOKUPNAME" },
462
{ WINBINDD_LOOKUPRIDS, winbindd_lookuprids, "LOOKUPRIDS" },
464
/* Lookup related functions */
466
{ WINBINDD_SID_TO_UID, winbindd_sid_to_uid, "SID_TO_UID" },
467
{ WINBINDD_SID_TO_GID, winbindd_sid_to_gid, "SID_TO_GID" },
468
{ WINBINDD_UID_TO_SID, winbindd_uid_to_sid, "UID_TO_SID" },
469
{ WINBINDD_GID_TO_SID, winbindd_gid_to_sid, "GID_TO_SID" },
470
{ WINBINDD_ALLOCATE_UID, winbindd_allocate_uid, "ALLOCATE_UID" },
471
{ WINBINDD_ALLOCATE_GID, winbindd_allocate_gid, "ALLOCATE_GID" },
472
{ WINBINDD_SET_MAPPING, winbindd_set_mapping, "SET_MAPPING" },
473
{ WINBINDD_REMOVE_MAPPING, winbindd_remove_mapping, "REMOVE_MAPPING" },
474
{ WINBINDD_SET_HWM, winbindd_set_hwm, "SET_HWMS" },
478
{ WINBINDD_CHECK_MACHACC, winbindd_check_machine_acct, "CHECK_MACHACC" },
479
{ WINBINDD_PING, winbindd_ping, "PING" },
480
{ WINBINDD_INFO, winbindd_info, "INFO" },
481
{ WINBINDD_INTERFACE_VERSION, winbindd_interface_version,
482
"INTERFACE_VERSION" },
483
{ WINBINDD_DOMAIN_NAME, winbindd_domain_name, "DOMAIN_NAME" },
484
{ WINBINDD_DOMAIN_INFO, winbindd_domain_info, "DOMAIN_INFO" },
485
{ WINBINDD_NETBIOS_NAME, winbindd_netbios_name, "NETBIOS_NAME" },
486
{ WINBINDD_PRIV_PIPE_DIR, winbindd_priv_pipe_dir,
487
"WINBINDD_PRIV_PIPE_DIR" },
488
{ WINBINDD_GETDCNAME, winbindd_getdcname, "GETDCNAME" },
489
{ WINBINDD_DSGETDCNAME, winbindd_dsgetdcname, "DSGETDCNAME" },
491
/* Credential cache access */
492
{ WINBINDD_CCACHE_NTLMAUTH, winbindd_ccache_ntlm_auth, "NTLMAUTH" },
496
{ WINBINDD_WINS_BYNAME, winbindd_wins_byname, "WINS_BYNAME" },
497
{ WINBINDD_WINS_BYIP, winbindd_wins_byip, "WINS_BYIP" },
501
{ WINBINDD_NUM_CMDS, NULL, "NONE" }
504
static void process_request(struct winbindd_cli_state *state)
506
struct winbindd_dispatch_table *table = dispatch_table;
508
/* Free response data - we may be interrupted and receive another
509
command before being able to send this data off. */
511
SAFE_FREE(state->response.extra_data.data);
513
ZERO_STRUCT(state->response);
515
state->response.result = WINBINDD_PENDING;
516
state->response.length = sizeof(struct winbindd_response);
518
state->mem_ctx = talloc_init("winbind request");
519
if (state->mem_ctx == NULL)
522
/* Remember who asked us. */
523
state->pid = state->request.pid;
525
/* Process command */
527
for (table = dispatch_table; table->fn; table++) {
528
if (state->request.cmd == table->cmd) {
529
DEBUG(10,("process_request: request fn %s\n",
530
table->winbindd_cmd_name ));
537
DEBUG(10,("process_request: unknown request fn number %d\n",
538
(int)state->request.cmd ));
539
request_error(state);
544
* A list of file descriptors being monitored by select in the main processing
545
* loop. winbindd_fd_event->handler is called whenever the socket is readable/writable.
548
static struct winbindd_fd_event *fd_events = NULL;
550
void add_fd_event(struct winbindd_fd_event *ev)
552
struct winbindd_fd_event *match;
554
/* only add unique winbindd_fd_event structs */
556
for (match=fd_events; match; match=match->next ) {
558
SMB_ASSERT( match != ev );
565
DLIST_ADD(fd_events, ev);
568
void remove_fd_event(struct winbindd_fd_event *ev)
570
DLIST_REMOVE(fd_events, ev);
574
* Handler for winbindd_fd_events to complete a read/write request, set up by
575
* setup_async_read/setup_async_write.
578
static void rw_callback(struct winbindd_fd_event *event, int flags)
583
todo = event->length - event->done;
585
if (event->flags & EVENT_FD_WRITE) {
586
SMB_ASSERT(flags == EVENT_FD_WRITE);
587
done = sys_write(event->fd,
588
&((char *)event->data)[event->done],
593
event->finished(event->private_data, False);
598
if (event->flags & EVENT_FD_READ) {
599
SMB_ASSERT(flags == EVENT_FD_READ);
600
done = sys_read(event->fd, &((char *)event->data)[event->done],
605
event->finished(event->private_data, False);
612
if (event->done == event->length) {
614
event->finished(event->private_data, True);
619
* Request an async read/write on a winbindd_fd_event structure. (*finished) is called
620
* when the request is completed or an error had occurred.
623
void setup_async_read(struct winbindd_fd_event *event, void *data, size_t length,
624
void (*finished)(void *private_data, bool success),
627
SMB_ASSERT(event->flags == 0);
629
event->length = length;
631
event->handler = rw_callback;
632
event->finished = finished;
633
event->private_data = private_data;
634
event->flags = EVENT_FD_READ;
637
void setup_async_write(struct winbindd_fd_event *event, void *data, size_t length,
638
void (*finished)(void *private_data, bool success),
641
SMB_ASSERT(event->flags == 0);
643
event->length = length;
645
event->handler = rw_callback;
646
event->finished = finished;
647
event->private_data = private_data;
648
event->flags = EVENT_FD_WRITE;
652
* This is the main event loop of winbind requests. It goes through a
653
* state-machine of 3 read/write requests, 4 if you have extra data to send.
655
* An idle winbind client has a read request of 4 bytes outstanding,
656
* finalizing function is request_len_recv, checking the length. request_recv
657
* then processes the packet. The processing function then at some point has
658
* to call request_finished which schedules sending the response.
661
static void request_len_recv(void *private_data, bool success);
662
static void request_recv(void *private_data, bool success);
663
static void request_main_recv(void *private_data, bool success);
664
static void request_finished(struct winbindd_cli_state *state);
665
static void response_main_sent(void *private_data, bool success);
666
static void response_extra_sent(void *private_data, bool success);
668
static void response_extra_sent(void *private_data, bool success)
670
struct winbindd_cli_state *state =
671
talloc_get_type_abort(private_data, struct winbindd_cli_state);
673
TALLOC_FREE(state->mem_ctx);
676
state->finished = True;
680
SAFE_FREE(state->response.extra_data.data);
682
setup_async_read(&state->fd_event, &state->request, sizeof(uint32),
683
request_len_recv, state);
686
static void response_main_sent(void *private_data, bool success)
688
struct winbindd_cli_state *state =
689
talloc_get_type_abort(private_data, struct winbindd_cli_state);
692
state->finished = True;
696
if (state->response.length == sizeof(state->response)) {
697
TALLOC_FREE(state->mem_ctx);
699
setup_async_read(&state->fd_event, &state->request,
700
sizeof(uint32), request_len_recv, state);
704
setup_async_write(&state->fd_event, state->response.extra_data.data,
705
state->response.length - sizeof(state->response),
706
response_extra_sent, state);
709
static void request_finished(struct winbindd_cli_state *state)
711
/* Make sure request.extra_data is freed when finish processing a request */
712
SAFE_FREE(state->request.extra_data.data);
713
setup_async_write(&state->fd_event, &state->response,
714
sizeof(state->response), response_main_sent, state);
717
void request_error(struct winbindd_cli_state *state)
719
SMB_ASSERT(state->response.result == WINBINDD_PENDING);
720
state->response.result = WINBINDD_ERROR;
721
request_finished(state);
724
void request_ok(struct winbindd_cli_state *state)
726
SMB_ASSERT(state->response.result == WINBINDD_PENDING);
727
state->response.result = WINBINDD_OK;
728
request_finished(state);
731
static void request_len_recv(void *private_data, bool success)
733
struct winbindd_cli_state *state =
734
talloc_get_type_abort(private_data, struct winbindd_cli_state);
737
state->finished = True;
741
if (*(uint32 *)(&state->request) != sizeof(state->request)) {
742
DEBUG(0,("request_len_recv: Invalid request size received: %d (expected %u)\n",
743
*(uint32_t *)(&state->request), (uint32_t)sizeof(state->request)));
744
state->finished = True;
748
setup_async_read(&state->fd_event, (uint32 *)(&state->request)+1,
749
sizeof(state->request) - sizeof(uint32),
750
request_main_recv, state);
753
static void request_main_recv(void *private_data, bool success)
755
struct winbindd_cli_state *state =
756
talloc_get_type_abort(private_data, struct winbindd_cli_state);
759
state->finished = True;
763
if (state->request.extra_len == 0) {
764
state->request.extra_data.data = NULL;
765
request_recv(state, True);
769
if ((!state->privileged) &&
770
(state->request.extra_len > WINBINDD_MAX_EXTRA_DATA)) {
771
DEBUG(3, ("Got request with %d bytes extra data on "
772
"unprivileged socket\n", (int)state->request.extra_len));
773
state->request.extra_data.data = NULL;
774
state->finished = True;
778
state->request.extra_data.data =
779
SMB_MALLOC_ARRAY(char, state->request.extra_len + 1);
781
if (state->request.extra_data.data == NULL) {
782
DEBUG(0, ("malloc failed\n"));
783
state->finished = True;
787
/* Ensure null termination */
788
state->request.extra_data.data[state->request.extra_len] = '\0';
790
setup_async_read(&state->fd_event, state->request.extra_data.data,
791
state->request.extra_len, request_recv, state);
794
static void request_recv(void *private_data, bool success)
796
struct winbindd_cli_state *state =
797
talloc_get_type_abort(private_data, struct winbindd_cli_state);
800
state->finished = True;
804
process_request(state);
807
/* Process a new connection by adding it to the client connection list */
809
static void new_connection(int listen_sock, bool privileged)
811
struct sockaddr_un sunaddr;
812
struct winbindd_cli_state *state;
816
/* Accept connection */
818
len = sizeof(sunaddr);
821
sock = accept(listen_sock, (struct sockaddr *)&sunaddr, &len);
822
} while (sock == -1 && errno == EINTR);
827
DEBUG(6,("accepted socket %d\n", sock));
829
/* Create new connection structure */
831
if ((state = TALLOC_ZERO_P(NULL, struct winbindd_cli_state)) == NULL) {
838
state->last_access = time(NULL);
840
state->privileged = privileged;
842
state->fd_event.fd = state->sock;
843
state->fd_event.flags = 0;
844
add_fd_event(&state->fd_event);
846
setup_async_read(&state->fd_event, &state->request, sizeof(uint32),
847
request_len_recv, state);
849
/* Add to connection list */
851
winbindd_add_client(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->finished) {
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",
880
/* Free any getent state */
882
free_getent_state(state->getpwent_state);
883
free_getent_state(state->getgrent_state);
885
/* We may have some extra data that was not freed if the client was
886
killed unexpectedly */
888
SAFE_FREE(state->response.extra_data.data);
890
TALLOC_FREE(state->mem_ctx);
892
remove_fd_event(&state->fd_event);
894
/* Remove from list and free */
896
winbindd_remove_client(state);
900
/* Shutdown client connection which has been idle for the longest time */
902
static bool remove_idle_client(void)
904
struct winbindd_cli_state *state, *remove_state = NULL;
905
time_t last_access = 0;
908
for (state = winbindd_client_list(); state; state = state->next) {
909
if (state->response.result != WINBINDD_PENDING &&
910
state->fd_event.flags == EVENT_FD_READ &&
911
!state->getpwent_state && !state->getgrent_state) {
913
if (!last_access || state->last_access < last_access) {
914
last_access = state->last_access;
915
remove_state = state;
921
DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
922
nidle, remove_state->sock, (unsigned int)remove_state->pid));
923
remove_client(remove_state);
930
struct winbindd_listen_state {
933
struct tevent_fd *fde;
936
static void winbindd_listen_fde_handler(struct tevent_context *ev,
937
struct tevent_fd *fde,
941
struct winbindd_listen_state *s = talloc_get_type_abort(private_data,
942
struct winbindd_listen_state);
944
while (winbindd_num_clients() >
945
WINBINDD_MAX_SIMULTANEOUS_CLIENTS - 1) {
946
DEBUG(5,("winbindd: Exceeding %d client "
947
"connections, removing idle "
949
WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
950
if (!remove_idle_client()) {
951
DEBUG(0,("winbindd: Exceeding %d "
952
"client connections, no idle "
953
"connection found\n",
954
WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
959
/* new, non-privileged connection */
960
new_connection(s->fd, s->privileged);
963
static bool winbindd_setup_listeners(void)
965
struct winbindd_listen_state *pub_state = NULL;
966
struct winbindd_listen_state *priv_state = NULL;
968
pub_state = talloc(winbind_event_context(),
969
struct winbindd_listen_state);
974
pub_state->privileged = false;
975
pub_state->fd = open_winbindd_socket();
976
if (pub_state->fd == -1) {
980
pub_state->fde = tevent_add_fd(winbind_event_context(),
981
pub_state, pub_state->fd,
983
winbindd_listen_fde_handler,
985
if (!pub_state->fde) {
986
close(pub_state->fd);
989
tevent_fd_set_auto_close(pub_state->fde);
991
priv_state = talloc(winbind_event_context(),
992
struct winbindd_listen_state);
997
priv_state->privileged = true;
998
priv_state->fd = open_winbindd_priv_socket();
999
if (priv_state->fd == -1) {
1003
priv_state->fde = tevent_add_fd(winbind_event_context(),
1004
priv_state, priv_state->fd,
1006
winbindd_listen_fde_handler,
1008
if (!priv_state->fde) {
1009
close(priv_state->fd);
1012
tevent_fd_set_auto_close(priv_state->fde);
1016
TALLOC_FREE(pub_state);
1017
TALLOC_FREE(priv_state);
1021
/* Process incoming clients on listen_sock. We use a tricky non-blocking,
1022
non-forking, non-threaded model which allows us to handle many
1023
simultaneous connections while remaining impervious to many denial of
1026
static void process_loop(void)
1028
struct winbindd_fd_event *ev;
1029
fd_set r_fds, w_fds;
1030
int maxfd = 0, selret;
1031
struct timeval timeout, ev_timeout;
1033
if (run_events(winbind_event_context(), 0, NULL, NULL)) {
1037
/* Initialise fd lists for select() */
1042
timeout.tv_sec = WINBINDD_ESTABLISH_LOOP;
1043
timeout.tv_usec = 0;
1045
/* Check for any event timeouts. */
1051
* Initialize this high as event_add_to_select_args()
1052
* uses a timeval_min() on this and next_event. Fix
1053
* from Roel van Meer <rolek@alt001.com>.
1056
ev_timeout.tv_sec = 999999;
1057
ev_timeout.tv_usec = 0;
1059
event_add_to_select_args(winbind_event_context(), &now,
1060
&r_fds, &w_fds, &ev_timeout, &maxfd);
1062
if (get_timed_events_timeout(winbind_event_context(), &ev_timeout)) {
1063
timeout = timeval_min(&timeout, &ev_timeout);
1066
for (ev = fd_events; ev; ev = ev->next) {
1067
if (ev->flags & EVENT_FD_READ) {
1068
FD_SET(ev->fd, &r_fds);
1069
maxfd = MAX(ev->fd, maxfd);
1071
if (ev->flags & EVENT_FD_WRITE) {
1072
FD_SET(ev->fd, &w_fds);
1073
maxfd = MAX(ev->fd, maxfd);
1079
selret = sys_select(maxfd + 1, &r_fds, &w_fds, NULL, &timeout);
1086
if (errno == EINTR) {
1090
/* Select error, something is badly wrong */
1098
if (run_events(winbind_event_context(), selret, &r_fds, &w_fds)) {
1103
while (ev != NULL) {
1104
struct winbindd_fd_event *next = ev->next;
1106
if (FD_ISSET(ev->fd, &r_fds))
1107
flags |= EVENT_FD_READ;
1108
if (FD_ISSET(ev->fd, &w_fds))
1109
flags |= EVENT_FD_WRITE;
1111
ev->handler(ev, flags);
1121
run_events(winbind_event_context(), selret, &r_fds, &w_fds);
1124
winbindd_check_cache_size(time(NULL));
1128
bool winbindd_use_idmap_cache(void)
1130
return !opt_nocache;
1133
bool winbindd_use_cache(void)
1135
return !opt_nocache;
1140
int main(int argc, char **argv, char **envp)
1142
static bool is_daemon = False;
1143
static bool Fork = True;
1144
static bool log_stdout = False;
1145
static bool no_process_group = False;
1149
OPT_NO_PROCESS_GROUP,
1152
struct poptOption long_options[] = {
1154
{ "stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
1155
{ "foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Daemon in foreground mode" },
1156
{ "no-process-group", 0, POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
1157
{ "daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
1158
{ "interactive", 'i', POPT_ARG_NONE, NULL, 'i', "Interactive mode" },
1159
{ "no-caching", 'n', POPT_ARG_NONE, NULL, 'n', "Disable caching" },
1165
TALLOC_CTX *frame = talloc_stackframe();
1167
/* glibc (?) likes to print "User defined signal 1" and exit if a
1168
SIGUSR[12] is received before a handler is installed */
1170
CatchSignal(SIGUSR1, SIG_IGN);
1171
CatchSignal(SIGUSR2, SIG_IGN);
1173
fault_setup((void (*)(void *))fault_quit );
1174
dump_core_setup("winbindd");
1178
/* Initialise for running in non-root mode */
1182
set_remote_machine_name("winbindd", False);
1184
/* Set environment variable so we don't recursively call ourselves.
1185
This may also be useful interactively. */
1187
if ( !winbind_off() ) {
1188
DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
1192
/* Initialise samba/rpc client stuff */
1194
pc = poptGetContext("winbindd", argc, (const char **)argv, long_options, 0);
1196
while ((opt = poptGetNextOpt(pc)) != -1) {
1198
/* Don't become a daemon */
1210
case OPT_NO_PROCESS_GROUP:
1211
no_process_group = true;
1213
case OPT_LOG_STDOUT:
1220
d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
1221
poptBadOption(pc, 0), poptStrerror(opt));
1222
poptPrintUsage(pc, stderr, 0);
1227
if (is_daemon && interactive) {
1228
d_fprintf(stderr,"\nERROR: "
1229
"Option -i|--interactive is not allowed together with -D|--daemon\n\n");
1230
poptPrintUsage(pc, stderr, 0);
1234
if (log_stdout && Fork) {
1235
d_fprintf(stderr, "\nERROR: "
1236
"Can't log to stdout (-S) unless daemon is in foreground +(-F) or interactive (-i)\n\n");
1237
poptPrintUsage(pc, stderr, 0);
1241
poptFreeContext(pc);
1243
if (!override_logfile) {
1245
if (asprintf(&lfile,"%s/log.winbindd",
1246
get_dyn_LOGFILEBASE()) > 0) {
1247
lp_set_logfile(lfile);
1251
setup_logging("winbindd", log_stdout);
1254
DEBUG(0,("winbindd version %s started.\n", samba_version_string()));
1255
DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
1257
if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
1258
DEBUG(0, ("error opening config file\n"));
1262
/* Initialise messaging system */
1264
if (winbind_messaging_context() == NULL) {
1268
if (!reload_services_file(NULL)) {
1269
DEBUG(0, ("error opening config file\n"));
1273
if (!directory_exist(lp_lockdir())) {
1274
mkdir(lp_lockdir(), 0755);
1284
if (!secrets_init()) {
1286
DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
1290
/* Enable netbios namecache */
1294
/* Unblock all signals we are interested in as they may have been
1295
blocked by the parent process. */
1297
BlockSignals(False, SIGINT);
1298
BlockSignals(False, SIGQUIT);
1299
BlockSignals(False, SIGTERM);
1300
BlockSignals(False, SIGUSR1);
1301
BlockSignals(False, SIGUSR2);
1302
BlockSignals(False, SIGHUP);
1303
BlockSignals(False, SIGCHLD);
1306
become_daemon(Fork, no_process_group);
1308
pidfile_create("winbindd");
1312
* If we're interactive we want to set our own process group for
1313
* signal management.
1315
if (interactive && !no_process_group)
1316
setpgid( (pid_t)0, (pid_t)0);
1321
/* Don't use winbindd_reinit_after_fork here as
1322
* we're just starting up and haven't created any
1323
* winbindd-specific resources we must free yet. JRA.
1326
if (!NT_STATUS_IS_OK(reinit_after_fork(winbind_messaging_context(),
1327
winbind_event_context(),
1329
DEBUG(0,("reinit_after_fork() failed\n"));
1333
/* Setup signal handlers */
1335
if (!winbindd_setup_sig_term_handler(true))
1337
if (!winbindd_setup_sig_hup_handler(NULL))
1339
if (!winbindd_setup_sig_chld_handler())
1341
if (!winbindd_setup_sig_usr2_handler())
1344
CatchSignal(SIGPIPE, SIG_IGN); /* Ignore sigpipe */
1347
* Ensure all cache and idmap caches are consistent
1348
* and initialized before we startup.
1350
if (!winbindd_cache_validate_and_initialize()) {
1354
/* get broadcast messages */
1355
claim_connection(NULL,"",FLAG_MSG_GENERAL|FLAG_MSG_DBWRAP);
1357
/* React on 'smbcontrol winbindd reload-config' in the same way
1358
as to SIGHUP signal */
1359
messaging_register(winbind_messaging_context(), NULL,
1360
MSG_SMB_CONF_UPDATED, msg_reload_services);
1361
messaging_register(winbind_messaging_context(), NULL,
1362
MSG_SHUTDOWN, msg_shutdown);
1364
/* Handle online/offline messages. */
1365
messaging_register(winbind_messaging_context(), NULL,
1366
MSG_WINBIND_OFFLINE, winbind_msg_offline);
1367
messaging_register(winbind_messaging_context(), NULL,
1368
MSG_WINBIND_ONLINE, winbind_msg_online);
1369
messaging_register(winbind_messaging_context(), NULL,
1370
MSG_WINBIND_ONLINESTATUS, winbind_msg_onlinestatus);
1372
messaging_register(winbind_messaging_context(), NULL,
1373
MSG_DUMP_EVENT_LIST, winbind_msg_dump_event_list);
1375
messaging_register(winbind_messaging_context(), NULL,
1376
MSG_WINBIND_VALIDATE_CACHE,
1377
winbind_msg_validate_cache);
1379
messaging_register(winbind_messaging_context(), NULL,
1380
MSG_WINBIND_DUMP_DOMAIN_LIST,
1381
winbind_msg_dump_domain_list);
1383
/* Register handler for MSG_DEBUG. */
1384
messaging_register(winbind_messaging_context(), NULL,
1388
netsamlogon_cache_init(); /* Non-critical */
1390
/* clear the cached list of trusted domains */
1394
if (!init_domain_list()) {
1395
DEBUG(0,("unable to initialize domain list\n"));
1400
init_locator_child();
1402
smb_nscd_flush_user_cache();
1403
smb_nscd_flush_group_cache();
1405
/* setup listen sockets */
1407
if (!winbindd_setup_listeners()) {
1408
DEBUG(0,("winbindd_setup_listeners() failed\n"));
1413
/* Loop waiting for requests */
1415
struct winbindd_cli_state *state;
1417
frame = talloc_stackframe();
1419
/* refresh the trusted domain cache */
1421
rescan_trusted_domains();
1423
/* Dispose of client connection if it is marked as
1425
state = winbindd_client_list();
1427
struct winbindd_cli_state *next = state->next;
1429
if (state->finished) {
1430
remove_client(state);
added
removed
source3/winbindd/winbindd.c
