1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* dbus-server.c DBusServer object
4 * Copyright (C) 2002, 2003, 2004, 2005 Red Hat Inc.
6 * Licensed under the Academic Free License version 2.1
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "dbus-server.h"
26 #include "dbus-server-unix.h"
27 #include "dbus-server-socket.h"
28 #include "dbus-string.h"
29 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
30 #include "dbus-server-debug-pipe.h"
32 #include "dbus-address.h"
33 #include "dbus-protocol.h"
36 * @defgroup DBusServer DBusServer
38 * @brief Server that listens for new connections.
40 * A DBusServer represents a server that other applications
41 * can connect to. Each connection from another application
42 * is represented by a #DBusConnection.
44 * @todo Thread safety hasn't been tested much for #DBusServer
45 * @todo Need notification to apps of disconnection, may matter for some transports
49 * @defgroup DBusServerInternals DBusServer implementation details
50 * @ingroup DBusInternals
51 * @brief Implementation details of DBusServer
56 #ifndef _dbus_server_trace_ref
58 _dbus_server_trace_ref (DBusServer *server,
63 static int enabled = -1;
65 _dbus_trace_ref ("DBusServer", server, old_refcount, new_refcount, why,
66 "DBUS_SERVER_TRACE", &enabled);
70 /* this is a little fragile since it assumes the address doesn't
71 * already have a guid, but it shouldn't
74 copy_address_with_guid_appended (const DBusString *address,
75 const DBusString *guid_hex)
80 if (!_dbus_string_init (&with_guid))
83 if (!_dbus_string_copy (address, 0, &with_guid,
84 _dbus_string_get_length (&with_guid)) ||
85 !_dbus_string_append (&with_guid, ",guid=") ||
86 !_dbus_string_copy (guid_hex, 0,
87 &with_guid, _dbus_string_get_length (&with_guid)))
89 _dbus_string_free (&with_guid);
94 _dbus_string_steal_data (&with_guid, &retval);
96 _dbus_string_free (&with_guid);
98 return retval; /* may be NULL if steal_data failed */
102 * Initializes the members of the DBusServer base class.
103 * Chained up to by subclass constructors.
105 * @param server the server.
106 * @param vtable the vtable for the subclass.
107 * @param address the server's address
108 * @param error location to store reason for failure
109 * @returns #TRUE on success.
112 _dbus_server_init_base (DBusServer *server,
113 const DBusServerVTable *vtable,
114 const DBusString *address,
117 server->vtable = vtable;
119 #ifdef DBUS_DISABLE_ASSERT
120 _dbus_atomic_inc (&server->refcount);
123 dbus_int32_t old_refcount = _dbus_atomic_inc (&server->refcount);
125 _dbus_assert (old_refcount == 0);
129 server->address = NULL;
130 server->watches = NULL;
131 server->timeouts = NULL;
132 server->published_address = FALSE;
134 if (!_dbus_string_init (&server->guid_hex))
136 _DBUS_SET_OOM (error);
140 if (!_dbus_generate_uuid (&server->guid, error))
143 if (!_dbus_uuid_encode (&server->guid, &server->guid_hex))
146 server->address = copy_address_with_guid_appended (address,
148 if (server->address == NULL)
151 _dbus_rmutex_new_at_location (&server->mutex);
152 if (server->mutex == NULL)
155 server->watches = _dbus_watch_list_new ();
156 if (server->watches == NULL)
159 server->timeouts = _dbus_timeout_list_new ();
160 if (server->timeouts == NULL)
163 _dbus_data_slot_list_init (&server->slot_list);
165 _dbus_verbose ("Initialized server on address %s\n", server->address);
170 _DBUS_SET_OOM (error);
172 _dbus_rmutex_free_at_location (&server->mutex);
173 server->mutex = NULL;
176 _dbus_watch_list_free (server->watches);
177 server->watches = NULL;
179 if (server->timeouts)
181 _dbus_timeout_list_free (server->timeouts);
182 server->timeouts = NULL;
186 dbus_free (server->address);
187 server->address = NULL;
189 _dbus_string_free (&server->guid_hex);
195 * Finalizes the members of the DBusServer base class.
196 * Chained up to by subclass finalizers.
198 * @param server the server.
201 _dbus_server_finalize_base (DBusServer *server)
203 /* We don't have the lock, but nobody should be accessing
204 * concurrently since they don't have a ref
206 #ifndef DBUS_DISABLE_CHECKS
207 _dbus_assert (!server->have_server_lock);
209 _dbus_assert (server->disconnected);
211 /* calls out to application code... */
212 _dbus_data_slot_list_free (&server->slot_list);
214 dbus_server_set_new_connection_function (server, NULL, NULL, NULL);
216 _dbus_watch_list_free (server->watches);
217 _dbus_timeout_list_free (server->timeouts);
219 _dbus_rmutex_free_at_location (&server->mutex);
221 dbus_free (server->address);
223 dbus_free_string_array (server->auth_mechanisms);
225 _dbus_string_free (&server->guid_hex);
229 /** Function to be called in protected_change_watch() with refcount held */
230 typedef dbus_bool_t (* DBusWatchAddFunction) (DBusWatchList *list,
232 /** Function to be called in protected_change_watch() with refcount held */
233 typedef void (* DBusWatchRemoveFunction) (DBusWatchList *list,
235 /** Function to be called in protected_change_watch() with refcount held */
236 typedef void (* DBusWatchToggleFunction) (DBusWatchList *list,
238 dbus_bool_t enabled);
241 protected_change_watch (DBusServer *server,
243 DBusWatchAddFunction add_function,
244 DBusWatchRemoveFunction remove_function,
245 DBusWatchToggleFunction toggle_function,
248 DBusWatchList *watches;
251 HAVE_LOCK_CHECK (server);
253 /* This isn't really safe or reasonable; a better pattern is the "do
254 * everything, then drop lock and call out" one; but it has to be
255 * propagated up through all callers
258 watches = server->watches;
261 server->watches = NULL;
262 _dbus_server_ref_unlocked (server);
263 SERVER_UNLOCK (server);
266 retval = (* add_function) (watches, watch);
267 else if (remove_function)
270 (* remove_function) (watches, watch);
275 (* toggle_function) (watches, watch, enabled);
278 SERVER_LOCK (server);
279 server->watches = watches;
280 _dbus_server_unref_unlocked (server);
289 * Adds a watch for this server, chaining out to application-provided
292 * @param server the server.
293 * @param watch the watch to add.
296 _dbus_server_add_watch (DBusServer *server,
299 HAVE_LOCK_CHECK (server);
300 return protected_change_watch (server, watch,
301 _dbus_watch_list_add_watch,
306 * Removes a watch previously added with _dbus_server_remove_watch().
308 * @param server the server.
309 * @param watch the watch to remove.
312 _dbus_server_remove_watch (DBusServer *server,
315 HAVE_LOCK_CHECK (server);
316 protected_change_watch (server, watch,
318 _dbus_watch_list_remove_watch,
323 * Toggles all watch and notifies app via server's
324 * DBusWatchToggledFunction if available.
326 * @param server the server.
327 * @param enabled whether to enable or disable
330 _dbus_server_toggle_all_watches (DBusServer *server,
333 _dbus_watch_list_toggle_all_watches (server->watches, enabled);
336 /** Function to be called in protected_change_timeout() with refcount held */
337 typedef dbus_bool_t (* DBusTimeoutAddFunction) (DBusTimeoutList *list,
338 DBusTimeout *timeout);
339 /** Function to be called in protected_change_timeout() with refcount held */
340 typedef void (* DBusTimeoutRemoveFunction) (DBusTimeoutList *list,
341 DBusTimeout *timeout);
342 /** Function to be called in protected_change_timeout() with refcount held */
343 typedef void (* DBusTimeoutToggleFunction) (DBusTimeoutList *list,
344 DBusTimeout *timeout,
345 dbus_bool_t enabled);
349 protected_change_timeout (DBusServer *server,
350 DBusTimeout *timeout,
351 DBusTimeoutAddFunction add_function,
352 DBusTimeoutRemoveFunction remove_function,
353 DBusTimeoutToggleFunction toggle_function,
356 DBusTimeoutList *timeouts;
359 HAVE_LOCK_CHECK (server);
361 /* This isn't really safe or reasonable; a better pattern is the "do everything, then
362 * drop lock and call out" one; but it has to be propagated up through all callers
365 timeouts = server->timeouts;
368 server->timeouts = NULL;
369 _dbus_server_ref_unlocked (server);
370 SERVER_UNLOCK (server);
373 retval = (* add_function) (timeouts, timeout);
374 else if (remove_function)
377 (* remove_function) (timeouts, timeout);
382 (* toggle_function) (timeouts, timeout, enabled);
385 SERVER_LOCK (server);
386 server->timeouts = timeouts;
387 _dbus_server_unref_unlocked (server);
396 * Adds a timeout for this server, chaining out to
397 * application-provided timeout handlers. The timeout should be
398 * repeatedly handled with dbus_timeout_handle() at its given interval
399 * until it is removed.
401 * @param server the server.
402 * @param timeout the timeout to add.
405 _dbus_server_add_timeout (DBusServer *server,
406 DBusTimeout *timeout)
408 return protected_change_timeout (server, timeout,
409 _dbus_timeout_list_add_timeout,
414 * Removes a timeout previously added with _dbus_server_add_timeout().
416 * @param server the server.
417 * @param timeout the timeout to remove.
420 _dbus_server_remove_timeout (DBusServer *server,
421 DBusTimeout *timeout)
423 protected_change_timeout (server, timeout,
425 _dbus_timeout_list_remove_timeout,
430 * Toggles a timeout and notifies app via server's
431 * DBusTimeoutToggledFunction if available. It's an error to call this
432 * function on a timeout that was not previously added.
434 * @param server the server.
435 * @param timeout the timeout to toggle.
436 * @param enabled whether to enable or disable
439 _dbus_server_toggle_timeout (DBusServer *server,
440 DBusTimeout *timeout,
443 protected_change_timeout (server, timeout,
445 _dbus_timeout_list_toggle_timeout,
451 * Like dbus_server_ref() but does not acquire the lock (must already be held)
453 * @param server the server.
456 _dbus_server_ref_unlocked (DBusServer *server)
458 dbus_int32_t old_refcount;
460 _dbus_assert (server != NULL);
461 HAVE_LOCK_CHECK (server);
463 old_refcount = _dbus_atomic_inc (&server->refcount);
464 _dbus_assert (old_refcount > 0);
465 _dbus_server_trace_ref (server, old_refcount, old_refcount + 1,
470 * Like dbus_server_unref() but does not acquire the lock (must already be held)
472 * @param server the server.
475 _dbus_server_unref_unlocked (DBusServer *server)
477 dbus_int32_t old_refcount;
479 /* Keep this in sync with dbus_server_unref */
481 _dbus_assert (server != NULL);
483 HAVE_LOCK_CHECK (server);
485 old_refcount = _dbus_atomic_dec (&server->refcount);
486 _dbus_assert (old_refcount > 0);
488 _dbus_server_trace_ref (server, old_refcount, old_refcount - 1,
491 if (old_refcount == 1)
493 _dbus_assert (server->disconnected);
495 SERVER_UNLOCK (server);
497 _dbus_assert (server->vtable->finalize != NULL);
499 (* server->vtable->finalize) (server);
506 * @addtogroup DBusServer
513 * @typedef DBusServer
515 * An opaque object representing a server that listens for
516 * connections from other applications. Each time a connection
517 * is made, a new DBusConnection is created and made available
518 * via an application-provided DBusNewConnectionFunction.
519 * The DBusNewConnectionFunction is provided with
520 * dbus_server_set_new_connection_function().
524 static const struct {
525 DBusServerListenResult (* func) (DBusAddressEntry *entry,
526 DBusServer **server_p,
529 { _dbus_server_listen_socket }
530 , { _dbus_server_listen_platform_specific }
531 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
532 , { _dbus_server_listen_debug_pipe }
537 * Listens for new connections on the given address. If there are
538 * multiple semicolon-separated address entries in the address, tries
539 * each one and listens on the first one that works.
541 * Returns #NULL and sets error if listening fails for any reason.
542 * Otherwise returns a new #DBusServer.
543 * dbus_server_set_new_connection_function(),
544 * dbus_server_set_watch_functions(), and
545 * dbus_server_set_timeout_functions() should be called immediately to
546 * render the server fully functional.
548 * To free the server, applications must call first
549 * dbus_server_disconnect() and then dbus_server_unref().
551 * @param address the address of this server.
552 * @param error location to store reason for failure.
553 * @returns a new #DBusServer, or #NULL on failure.
557 dbus_server_listen (const char *address,
561 DBusAddressEntry **entries;
563 DBusError first_connect_error = DBUS_ERROR_INIT;
564 dbus_bool_t handled_once;
566 _dbus_return_val_if_fail (address != NULL, NULL);
567 _dbus_return_val_if_error_is_set (error, NULL);
569 if (!dbus_parse_address (address, &entries, &len, error))
573 handled_once = FALSE;
575 for (i = 0; i < len; i++)
579 for (j = 0; j < (int) _DBUS_N_ELEMENTS (listen_funcs); ++j)
581 DBusServerListenResult result;
582 DBusError tmp_error = DBUS_ERROR_INIT;
584 result = (* listen_funcs[j].func) (entries[i],
588 if (result == DBUS_SERVER_LISTEN_OK)
590 _dbus_assert (server != NULL);
591 _DBUS_ASSERT_ERROR_IS_CLEAR (&tmp_error);
595 else if (result == DBUS_SERVER_LISTEN_ADDRESS_ALREADY_USED)
597 _dbus_assert (server == NULL);
598 dbus_set_error (error,
599 DBUS_ERROR_ADDRESS_IN_USE,
600 "Address '%s' already used",
601 dbus_address_entry_get_method (entries[0]));
605 else if (result == DBUS_SERVER_LISTEN_BAD_ADDRESS)
607 _dbus_assert (server == NULL);
608 _DBUS_ASSERT_ERROR_IS_SET (&tmp_error);
609 dbus_move_error (&tmp_error, error);
613 else if (result == DBUS_SERVER_LISTEN_NOT_HANDLED)
615 _dbus_assert (server == NULL);
616 _DBUS_ASSERT_ERROR_IS_CLEAR (&tmp_error);
618 /* keep trying addresses */
620 else if (result == DBUS_SERVER_LISTEN_DID_NOT_CONNECT)
622 _dbus_assert (server == NULL);
623 _DBUS_ASSERT_ERROR_IS_SET (&tmp_error);
624 if (!dbus_error_is_set (&first_connect_error))
625 dbus_move_error (&tmp_error, &first_connect_error);
627 dbus_error_free (&tmp_error);
631 /* keep trying addresses */
635 _dbus_assert (server == NULL);
636 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
643 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
645 dbus_set_error (error,
646 DBUS_ERROR_BAD_ADDRESS,
647 "Unknown address type '%s'",
648 dbus_address_entry_get_method (entries[0]));
650 dbus_set_error (error,
651 DBUS_ERROR_BAD_ADDRESS,
652 "Empty address '%s'",
656 dbus_address_entries_free (entries);
660 _dbus_assert (error == NULL || dbus_error_is_set (&first_connect_error) ||
661 dbus_error_is_set (error));
663 if (error && dbus_error_is_set (error))
665 /* already set the error */
669 /* didn't set the error but either error should be
670 * NULL or first_connect_error should be set.
672 _dbus_assert (error == NULL || dbus_error_is_set (&first_connect_error));
673 dbus_move_error (&first_connect_error, error);
676 _DBUS_ASSERT_ERROR_IS_CLEAR (&first_connect_error); /* be sure we freed it */
677 _DBUS_ASSERT_ERROR_IS_SET (error);
683 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
689 * Increments the reference count of a DBusServer.
691 * @param server the server.
692 * @returns the server
695 dbus_server_ref (DBusServer *server)
697 dbus_int32_t old_refcount;
699 _dbus_return_val_if_fail (server != NULL, NULL);
701 old_refcount = _dbus_atomic_inc (&server->refcount);
703 #ifndef DBUS_DISABLE_CHECKS
704 if (_DBUS_UNLIKELY (old_refcount <= 0))
706 _dbus_atomic_dec (&server->refcount);
707 _dbus_warn_check_failed (_dbus_return_if_fail_warning_format,
708 _DBUS_FUNCTION_NAME, "old_refcount > 0",
714 _dbus_server_trace_ref (server, old_refcount, old_refcount + 1, "ref");
720 * Decrements the reference count of a DBusServer. Finalizes the
721 * server if the reference count reaches zero.
723 * The server must be disconnected before the refcount reaches zero.
725 * @param server the server.
728 dbus_server_unref (DBusServer *server)
730 dbus_int32_t old_refcount;
732 /* keep this in sync with unref_unlocked */
734 _dbus_return_if_fail (server != NULL);
736 old_refcount = _dbus_atomic_dec (&server->refcount);
738 #ifndef DBUS_DISABLE_CHECKS
739 if (_DBUS_UNLIKELY (old_refcount <= 0))
741 /* undo side-effect first
742 * please do not try to simplify the code here by using
743 * _dbus_atomic_get(), why we don't use it is
744 * because it issues another atomic operation even though
745 * DBUS_DISABLE_CHECKS defined.
746 * Bug: https://bugs.freedesktop.org/show_bug.cgi?id=68303
748 _dbus_atomic_inc (&server->refcount);
749 _dbus_warn_check_failed (_dbus_return_if_fail_warning_format,
750 _DBUS_FUNCTION_NAME, "old_refcount > 0",
756 _dbus_server_trace_ref (server, old_refcount, old_refcount - 1, "unref");
758 if (old_refcount == 1)
761 _dbus_assert (server->disconnected);
763 _dbus_assert (server->vtable->finalize != NULL);
765 (* server->vtable->finalize) (server);
770 * Releases the server's address and stops listening for
771 * new clients. If called more than once, only the first
772 * call has an effect. Does not modify the server's
775 * @param server the server.
778 dbus_server_disconnect (DBusServer *server)
780 _dbus_return_if_fail (server != NULL);
782 dbus_server_ref (server);
783 SERVER_LOCK (server);
785 _dbus_assert (server->vtable->disconnect != NULL);
787 if (!server->disconnected)
789 /* this has to be first so recursive calls to disconnect don't happen */
790 server->disconnected = TRUE;
792 (* server->vtable->disconnect) (server);
795 SERVER_UNLOCK (server);
796 dbus_server_unref (server);
800 * Returns #TRUE if the server is still listening for new connections.
802 * @param server the server.
805 dbus_server_get_is_connected (DBusServer *server)
809 _dbus_return_val_if_fail (server != NULL, FALSE);
811 SERVER_LOCK (server);
812 retval = !server->disconnected;
813 SERVER_UNLOCK (server);
819 * Returns the address of the server, as a newly-allocated
820 * string which must be freed by the caller.
822 * @param server the server
823 * @returns the address or #NULL if no memory
826 dbus_server_get_address (DBusServer *server)
830 _dbus_return_val_if_fail (server != NULL, NULL);
832 SERVER_LOCK (server);
833 retval = _dbus_strdup (server->address);
834 SERVER_UNLOCK (server);
840 * Returns the unique ID of the server, as a newly-allocated
841 * string which must be freed by the caller. This ID is
842 * normally used by clients to tell when two #DBusConnection
843 * would be equivalent (because the server address passed
844 * to dbus_connection_open() will have the same guid in the
845 * two cases). dbus_connection_open() can re-use an existing
846 * connection with the same ID instead of opening a new
849 * This is an ID unique to each #DBusServer. Remember that
850 * a #DBusServer represents only one mode of connecting,
851 * so e.g. a bus daemon can listen on multiple addresses
852 * which will mean it has multiple #DBusServer each with
855 * The ID is not a UUID in the sense of RFC4122; the details
856 * are explained in the D-Bus specification.
858 * @param server the server
859 * @returns the id of the server or #NULL if no memory
862 dbus_server_get_id (DBusServer *server)
866 _dbus_return_val_if_fail (server != NULL, NULL);
868 SERVER_LOCK (server);
870 _dbus_string_copy_data (&server->guid_hex, &retval);
871 SERVER_UNLOCK (server);
877 * Sets a function to be used for handling new connections. The given
878 * function is passed each new connection as the connection is
879 * created. If the new connection function increments the connection's
880 * reference count, the connection will stay alive. Otherwise, the
881 * connection will be unreferenced and closed. The new connection
882 * function may also close the connection itself, which is considered
883 * good form if the connection is not wanted.
885 * The connection here is private in the sense of
886 * dbus_connection_open_private(), so if the new connection function
887 * keeps a reference it must arrange for the connection to be closed.
888 * i.e. libdbus does not own this connection once the new connection
889 * function takes a reference.
891 * @param server the server.
892 * @param function a function to handle new connections.
893 * @param data data to pass to the new connection handler.
894 * @param free_data_function function to free the data.
897 dbus_server_set_new_connection_function (DBusServer *server,
898 DBusNewConnectionFunction function,
900 DBusFreeFunction free_data_function)
902 DBusFreeFunction old_free_function;
905 _dbus_return_if_fail (server != NULL);
907 SERVER_LOCK (server);
908 old_free_function = server->new_connection_free_data_function;
909 old_data = server->new_connection_data;
911 server->new_connection_function = function;
912 server->new_connection_data = data;
913 server->new_connection_free_data_function = free_data_function;
914 SERVER_UNLOCK (server);
916 if (old_free_function != NULL)
917 (* old_free_function) (old_data);
921 * Sets the watch functions for the server. These functions are
922 * responsible for making the application's main loop aware of file
923 * descriptors that need to be monitored for events.
925 * This function behaves exactly like dbus_connection_set_watch_functions();
926 * see the documentation for that routine.
928 * @param server the server.
929 * @param add_function function to begin monitoring a new descriptor.
930 * @param remove_function function to stop monitoring a descriptor.
931 * @param toggled_function function to notify when the watch is enabled/disabled
932 * @param data data to pass to add_function and remove_function.
933 * @param free_data_function function to be called to free the data.
934 * @returns #FALSE on failure (no memory)
937 dbus_server_set_watch_functions (DBusServer *server,
938 DBusAddWatchFunction add_function,
939 DBusRemoveWatchFunction remove_function,
940 DBusWatchToggledFunction toggled_function,
942 DBusFreeFunction free_data_function)
945 DBusWatchList *watches;
947 _dbus_return_val_if_fail (server != NULL, FALSE);
949 SERVER_LOCK (server);
950 watches = server->watches;
951 server->watches = NULL;
954 SERVER_UNLOCK (server);
955 result = _dbus_watch_list_set_functions (watches,
961 SERVER_LOCK (server);
965 _dbus_warn_check_failed ("Re-entrant call to %s\n", _DBUS_FUNCTION_NAME);
968 server->watches = watches;
969 SERVER_UNLOCK (server);
975 * Sets the timeout functions for the server. These functions are
976 * responsible for making the application's main loop aware of timeouts.
978 * This function behaves exactly like dbus_connection_set_timeout_functions();
979 * see the documentation for that routine.
981 * @param server the server.
982 * @param add_function function to add a timeout.
983 * @param remove_function function to remove a timeout.
984 * @param toggled_function function to notify when the timeout is enabled/disabled
985 * @param data data to pass to add_function and remove_function.
986 * @param free_data_function function to be called to free the data.
987 * @returns #FALSE on failure (no memory)
990 dbus_server_set_timeout_functions (DBusServer *server,
991 DBusAddTimeoutFunction add_function,
992 DBusRemoveTimeoutFunction remove_function,
993 DBusTimeoutToggledFunction toggled_function,
995 DBusFreeFunction free_data_function)
998 DBusTimeoutList *timeouts;
1000 _dbus_return_val_if_fail (server != NULL, FALSE);
1002 SERVER_LOCK (server);
1003 timeouts = server->timeouts;
1004 server->timeouts = NULL;
1007 SERVER_UNLOCK (server);
1008 result = _dbus_timeout_list_set_functions (timeouts,
1013 free_data_function);
1014 SERVER_LOCK (server);
1018 _dbus_warn_check_failed ("Re-entrant call to %s\n", _DBUS_FUNCTION_NAME);
1021 server->timeouts = timeouts;
1022 SERVER_UNLOCK (server);
1028 * Sets the authentication mechanisms that this server offers to
1029 * clients, as a #NULL-terminated array of mechanism names. This
1030 * function only affects connections created <em>after</em> it is
1031 * called. Pass #NULL instead of an array to use all available
1032 * mechanisms (this is the default behavior).
1034 * The D-Bus specification describes some of the supported mechanisms.
1036 * @param server the server
1037 * @param mechanisms #NULL-terminated array of mechanisms
1038 * @returns #FALSE if no memory
1041 dbus_server_set_auth_mechanisms (DBusServer *server,
1042 const char **mechanisms)
1046 _dbus_return_val_if_fail (server != NULL, FALSE);
1048 SERVER_LOCK (server);
1050 if (mechanisms != NULL)
1052 copy = _dbus_dup_string_array (mechanisms);
1055 SERVER_UNLOCK (server);
1062 dbus_free_string_array (server->auth_mechanisms);
1063 server->auth_mechanisms = copy;
1065 SERVER_UNLOCK (server);
1070 static DBusDataSlotAllocator slot_allocator =
1071 _DBUS_DATA_SLOT_ALLOCATOR_INIT (_DBUS_LOCK_NAME (server_slots));
1074 * Allocates an integer ID to be used for storing application-specific
1075 * data on any DBusServer. The allocated ID may then be used
1076 * with dbus_server_set_data() and dbus_server_get_data().
1077 * The slot must be initialized with -1. If a nonnegative
1078 * slot is passed in, the refcount is incremented on that
1079 * slot, rather than creating a new slot.
1081 * The allocated slot is global, i.e. all DBusServer objects will have
1082 * a slot with the given integer ID reserved.
1084 * @param slot_p address of global variable storing the slot ID
1085 * @returns #FALSE on no memory
1088 dbus_server_allocate_data_slot (dbus_int32_t *slot_p)
1090 return _dbus_data_slot_allocator_alloc (&slot_allocator,
1095 * Deallocates a global ID for server data slots.
1096 * dbus_server_get_data() and dbus_server_set_data()
1097 * may no longer be used with this slot.
1098 * Existing data stored on existing DBusServer objects
1099 * will be freed when the server is finalized,
1100 * but may not be retrieved (and may only be replaced
1101 * if someone else reallocates the slot).
1103 * @param slot_p address of the slot to deallocate
1106 dbus_server_free_data_slot (dbus_int32_t *slot_p)
1108 _dbus_return_if_fail (*slot_p >= 0);
1110 _dbus_data_slot_allocator_free (&slot_allocator, slot_p);
1114 * Stores a pointer on a DBusServer, along
1115 * with an optional function to be used for freeing
1116 * the data when the data is set again, or when
1117 * the server is finalized. The slot number
1118 * must have been allocated with dbus_server_allocate_data_slot().
1120 * @param server the server
1121 * @param slot the slot number
1122 * @param data the data to store
1123 * @param free_data_func finalizer function for the data
1124 * @returns #TRUE if there was enough memory to store the data
1127 dbus_server_set_data (DBusServer *server,
1130 DBusFreeFunction free_data_func)
1132 DBusFreeFunction old_free_func;
1136 _dbus_return_val_if_fail (server != NULL, FALSE);
1138 SERVER_LOCK (server);
1140 retval = _dbus_data_slot_list_set (&slot_allocator,
1142 slot, data, free_data_func,
1143 &old_free_func, &old_data);
1146 SERVER_UNLOCK (server);
1150 /* Do the actual free outside the server lock */
1152 (* old_free_func) (old_data);
1159 * Retrieves data previously set with dbus_server_set_data().
1160 * The slot must still be allocated (must not have been freed).
1162 * @param server the server
1163 * @param slot the slot to get data from
1164 * @returns the data, or #NULL if not found
1167 dbus_server_get_data (DBusServer *server,
1172 _dbus_return_val_if_fail (server != NULL, NULL);
1174 SERVER_LOCK (server);
1176 res = _dbus_data_slot_list_get (&slot_allocator,
1180 SERVER_UNLOCK (server);
1187 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
1188 #include "dbus-test.h"
1192 _dbus_server_test (void)
1194 const char *valid_addresses[] = {
1196 "tcp:host=localhost,port=1234",
1197 "tcp:host=localhost,port=1234;tcp:port=5678",
1199 "unix:path=./boogie",
1200 "tcp:port=1234;unix:path=./boogie",
1207 for (i = 0; i < _DBUS_N_ELEMENTS (valid_addresses); i++)
1209 DBusError error = DBUS_ERROR_INIT;
1213 server = dbus_server_listen (valid_addresses[i], &error);
1216 _dbus_warn ("server listen error: %s: %s\n", error.name, error.message);
1217 dbus_error_free (&error);
1218 _dbus_assert_not_reached ("Failed to listen for valid address.");
1221 id = dbus_server_get_id (server);
1222 _dbus_assert (id != NULL);
1223 address = dbus_server_get_address (server);
1224 _dbus_assert (address != NULL);
1226 if (strstr (address, id) == NULL)
1228 _dbus_warn ("server id '%s' is not in the server address '%s'\n",
1230 _dbus_assert_not_reached ("bad server id or address");
1234 dbus_free (address);
1236 dbus_server_disconnect (server);
1237 dbus_server_unref (server);
1243 #endif /* DBUS_ENABLE_EMBEDDED_TESTS */