D-Bus: dbus-connection.c Source File

D-Bus 1.16.2

dbus-connection.c
1/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2/* dbus-connection.c DBusConnection object
3 *
4 * Copyright (C) 2002-2006 Red Hat Inc.
5 *
6 * SPDX-License-Identifier: AFL-2.1 OR GPL-2.0-or-later
7 *
8 * Licensed under the Academic Free License version 2.1
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 *
24 */
25
26#include <config.h>
27#include "dbus-shared.h"
28#include "dbus-connection.h"
29#include "dbus-list.h"
30#include "dbus-timeout.h"
31#include "dbus-transport.h"
32#include "dbus-watch.h"
33#include "dbus-connection-internal.h"
34#include "dbus-pending-call-internal.h"
35#include "dbus-list.h"
36#include "dbus-hash.h"
37#include "dbus-message-internal.h"
38#include "dbus-message-private.h"
39#include "dbus-threads.h"
40#include "dbus-protocol.h"
41#include "dbus-dataslot.h"
42#include "dbus-string.h"
43#include "dbus-signature.h"
44#include "dbus-pending-call.h"
45#include "dbus-object-tree.h"
46#include "dbus-threads-internal.h"
47#include "dbus-bus.h"
48#include "dbus-marshal-basic.h"
49
50#ifdef DBUS_DISABLE_CHECKS
51#define TOOK_LOCK_CHECK(connection)
52#define RELEASING_LOCK_CHECK(connection)
53#define HAVE_LOCK_CHECK(connection)
54#else
55#define TOOK_LOCK_CHECK(connection) do { \
56 _dbus_assert (!(connection)->have_connection_lock); \
57 (connection)->have_connection_lock = TRUE; \
58 } while (0)
59#define RELEASING_LOCK_CHECK(connection) do { \
60 _dbus_assert ((connection)->have_connection_lock); \
61 (connection)->have_connection_lock = FALSE; \
62 } while (0)
63#define HAVE_LOCK_CHECK(connection) _dbus_assert ((connection)->have_connection_lock)
64/* A "DO_NOT_HAVE_LOCK_CHECK" is impossible since we need the lock to check the flag */
65#endif
66
67#define TRACE_LOCKS 1
68
69#define CONNECTION_LOCK(connection) do { \
70 if (TRACE_LOCKS) { _dbus_verbose ("LOCK\n"); } \
71 _dbus_rmutex_lock ((connection)->mutex); \
72 TOOK_LOCK_CHECK (connection); \
73 } while (0)
74
75#define CONNECTION_UNLOCK(connection) _dbus_connection_unlock (connection)
76
77#define SLOTS_LOCK(connection) do { \
78 _dbus_rmutex_lock ((connection)->slot_mutex); \
79 } while (0)
80
81#define SLOTS_UNLOCK(connection) do { \
82 _dbus_rmutex_unlock ((connection)->slot_mutex); \
83 } while (0)
84
85#define DISPATCH_STATUS_NAME(s) \
86 ((s) == DBUS_DISPATCH_COMPLETE ? "complete" : \
87 (s) == DBUS_DISPATCH_DATA_REMAINS ? "data remains" : \
88 (s) == DBUS_DISPATCH_NEED_MEMORY ? "need memory" : \
89 "???")
90
199
207
208static void
209_dbus_connection_trace_ref (DBusConnection *connection,
210 int old_refcount,
211 int new_refcount,
212 const char *why)
213{
214#ifdef DBUS_ENABLE_VERBOSE_MODE
215 static int enabled = -1;
216
217 _dbus_trace_ref ("DBusConnection", connection, old_refcount, new_refcount,
218 why, "DBUS_CONNECTION_TRACE", &enabled);
219#endif
220}
221
225 typedef struct DBusMessageFilter DBusMessageFilter;
226
230 struct DBusMessageFilter
231{
232 DBusAtomic refcount;
233 DBusHandleMessageFunction function;
234 void *user_data;
235 DBusFreeFunction free_user_data_function;
236};
237
238
242 struct DBusPreallocatedSend
243{
244 DBusConnection *connection;
245 DBusList *queue_link;
246 DBusList *counter_link;
247};
248
249#if HAVE_DECL_MSG_NOSIGNAL
250static DBusAtomic _dbus_modify_sigpipe = { FALSE };
251#else
252static DBusAtomic _dbus_modify_sigpipe = { TRUE };
253#endif
254
258 struct DBusConnection
259{
260 DBusAtomic refcount;
261
262 DBusRMutex *mutex;
263
264 DBusCMutex *dispatch_mutex;
265 DBusCondVar *dispatch_cond;
266 DBusCMutex *io_path_mutex;
267 DBusCondVar *io_path_cond;
268
269 DBusList *outgoing_messages;
270 DBusList *incoming_messages;
271 DBusList *expired_messages;
272
273 DBusMessage *message_borrowed;
276
277 int n_outgoing;
278 int n_incoming;
279
280 DBusCounter *outgoing_counter;
281
282 DBusTransport *transport;
283 DBusWatchList *watches;
284 DBusTimeoutList *timeouts;
285
286 DBusList *filter_list;
287
288 DBusRMutex *slot_mutex;
289 DBusDataSlotList slot_list;
290
291 DBusHashTable *pending_replies;
292
293 dbus_uint32_t client_serial;
294 DBusList *disconnect_message_link;
295
296 DBusWakeupMainFunction wakeup_main_function;
297 void *wakeup_main_data;
298 DBusFreeFunction free_wakeup_main_data;
299
300 DBusDispatchStatusFunction dispatch_status_function;
301 void *dispatch_status_data;
302 DBusFreeFunction free_dispatch_status_data;
303
304 DBusDispatchStatus last_dispatch_status;
305
306 DBusObjectTree *objects;
307
308 char *server_guid;
309
310 /* These two MUST be bools and not bitfields, because they are protected by a separate lock
311 * from connection->mutex and all bitfields in a word have to be read/written together.
312 * So you can't have a different lock for different bitfields in the same word.
313 */
314 dbus_bool_t dispatch_acquired;
315 dbus_bool_t io_path_acquired;
316
317 unsigned int shareable : 1;
318
319 unsigned int exit_on_disconnect : 1;
320
321 unsigned int builtin_filters_enabled : 1;
322
323 unsigned int route_peer_messages : 1;
324
325 unsigned int disconnected_message_arrived : 1;
329 unsigned int disconnected_message_processed : 1;
332
333#ifndef DBUS_DISABLE_CHECKS
334 unsigned int have_connection_lock : 1;
335#endif
336
337#if defined(DBUS_ENABLE_CHECKS) || defined(DBUS_ENABLE_ASSERT)
338 int generation;
339#endif
340};
341
342static DBusDispatchStatus _dbus_connection_get_dispatch_status_unlocked (DBusConnection *connection);
343static void _dbus_connection_update_dispatch_status_and_unlock (DBusConnection *connection,
344 DBusDispatchStatus new_status);
345static void _dbus_connection_last_unref (DBusConnection *connection);
346static void _dbus_connection_acquire_dispatch (DBusConnection *connection);
347static void _dbus_connection_release_dispatch (DBusConnection *connection);
348static DBusDispatchStatus _dbus_connection_flush_unlocked (DBusConnection *connection);
349static void _dbus_connection_close_possibly_shared_and_unlock (DBusConnection *connection);
350static dbus_bool_t _dbus_connection_get_is_connected_unlocked (DBusConnection *connection);
351static dbus_bool_t _dbus_connection_peek_for_reply_unlocked (DBusConnection *connection,
352 dbus_uint32_t client_serial);
353
354static DBusMessageFilter *
355_dbus_message_filter_ref (DBusMessageFilter *filter)
356{
357#ifdef DBUS_DISABLE_ASSERT
358 _dbus_atomic_inc (&filter->refcount);
359#else
360 dbus_int32_t old_value;
361
362 old_value = _dbus_atomic_inc (&filter->refcount);
363 _dbus_assert (old_value > 0);
364#endif
365
366 return filter;
367}
368
369static void
370_dbus_message_filter_unref (DBusMessageFilter *filter)
371{
372 dbus_int32_t old_value;
373
374 old_value = _dbus_atomic_dec (&filter->refcount);
375 _dbus_assert (old_value > 0);
376
377 if (old_value == 1)
378 {
379 if (filter->free_user_data_function)
380 (* filter->free_user_data_function) (filter->user_data);
381
382 dbus_free (filter);
383 }
384}
385
391void
392_dbus_connection_lock (DBusConnection *connection)
393{
394 CONNECTION_LOCK (connection);
395}
396
402void
403_dbus_connection_unlock (DBusConnection *connection)
404{
405 DBusList *expired_messages;
406 DBusList *iter;
407
408 if (TRACE_LOCKS)
409 {
410 _dbus_verbose ("UNLOCK\n");
411 }
412
413 /* If we had messages that expired (fell off the incoming or outgoing
414 * queues) while we were locked, actually release them now */
415 expired_messages = connection->expired_messages;
416 connection->expired_messages = NULL;
417
418 RELEASING_LOCK_CHECK (connection);
419 _dbus_rmutex_unlock (connection->mutex);
420
421 for (iter = _dbus_list_pop_first_link (&expired_messages);
422 iter != NULL;
423 iter = _dbus_list_pop_first_link (&expired_messages))
424 {
425 DBusMessage *message = iter->data;
426
427 dbus_message_unref (message);
428 _dbus_list_free_link (iter);
429 }
430}
431
439static void
440_dbus_connection_wakeup_mainloop (DBusConnection *connection)
441{
442 if (connection->wakeup_main_function)
443 (*connection->wakeup_main_function) (connection->wakeup_main_data);
444}
445
446#ifdef DBUS_ENABLE_EMBEDDED_TESTS
459void
460_dbus_connection_test_get_locks (DBusConnection *connection,
461 DBusMutex **mutex_loc,
462 DBusMutex **dispatch_mutex_loc,
463 DBusMutex **io_path_mutex_loc,
464 DBusCondVar **dispatch_cond_loc,
465 DBusCondVar **io_path_cond_loc)
466{
467 *mutex_loc = (DBusMutex *) connection->mutex;
468 *dispatch_mutex_loc = (DBusMutex *) connection->dispatch_mutex;
469 *io_path_mutex_loc = (DBusMutex *) connection->io_path_mutex;
470 *dispatch_cond_loc = connection->dispatch_cond;
471 *io_path_cond_loc = connection->io_path_cond;
472}
473#endif
474
483void
484_dbus_connection_queue_received_message_link (DBusConnection *connection,
485 DBusList *link)
486{
487 DBusPendingCall *pending;
488 dbus_uint32_t reply_serial;
489 DBusMessage *message;
490
491 _dbus_assert (_dbus_transport_peek_is_authenticated (connection->transport));
492
493 _dbus_list_append_link (&connection->incoming_messages,
494 link);
495 message = link->data;
496
497 /* If this is a reply we're waiting on, remove timeout for it */
498 reply_serial = dbus_message_get_reply_serial (message);
499 if (reply_serial != 0)
500 {
501 pending = _dbus_hash_table_lookup_int (connection->pending_replies,
502 reply_serial);
503 if (pending != NULL)
504 {
505 if (_dbus_pending_call_is_timeout_added_unlocked (pending))
506 _dbus_connection_remove_timeout_unlocked (connection,
507 _dbus_pending_call_get_timeout_unlocked (pending));
508
509 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
510 }
511 }
512
513
514
515 connection->n_incoming += 1;
516
517 _dbus_connection_wakeup_mainloop (connection);
518
519 _dbus_verbose ("Message %p (%s %s %s %s '%s' reply to %u) added to incoming queue %p, %d incoming\n",
520 message,
521 dbus_message_type_to_string (dbus_message_get_type (message)),
522 dbus_message_get_path (message) ?
523 dbus_message_get_path (message) :
524 "no path",
525 dbus_message_get_interface (message) ?
526 dbus_message_get_interface (message) :
527 "no interface",
528 dbus_message_get_member (message) ?
529 dbus_message_get_member (message) :
530 "no member",
531 dbus_message_get_signature (message),
532 dbus_message_get_reply_serial (message),
533 connection,
534 connection->n_incoming);
535
536 _dbus_message_trace_ref (message, -1, -1,
537 "_dbus_conection_queue_received_message_link");
538}
539
548void
549_dbus_connection_queue_synthesized_message_link (DBusConnection *connection,
550 DBusList *link)
551{
552 HAVE_LOCK_CHECK (connection);
553
554 _dbus_list_append_link (&connection->incoming_messages, link);
555
556 connection->n_incoming += 1;
557
558 _dbus_connection_wakeup_mainloop (connection);
559
560 _dbus_message_trace_ref (link->data, -1, -1,
561 "_dbus_connection_queue_synthesized_message_link");
562
563 _dbus_verbose ("Synthesized message %p added to incoming queue %p, %d incoming\n",
564 link->data, connection, connection->n_incoming);
565}
566
567
575 dbus_bool_t
576_dbus_connection_has_messages_to_send_unlocked (DBusConnection *connection)
577{
578 HAVE_LOCK_CHECK (connection);
579 return connection->outgoing_messages != NULL;
580}
581
591 dbus_bool_t
592dbus_connection_has_messages_to_send (DBusConnection *connection)
593{
594 dbus_bool_t v;
595
596 _dbus_return_val_if_fail (connection != NULL, FALSE);
597
598 CONNECTION_LOCK (connection);
599 v = _dbus_connection_has_messages_to_send_unlocked (connection);
600 CONNECTION_UNLOCK (connection);
601
602 return v;
603}
604
612 DBusMessage*
613_dbus_connection_get_message_to_send (DBusConnection *connection)
614{
615 HAVE_LOCK_CHECK (connection);
616
617 return _dbus_list_get_last (&connection->outgoing_messages);
618}
619
628void
629_dbus_connection_message_sent_unlocked (DBusConnection *connection,
630 DBusMessage *message)
631{
632 DBusList *link;
633
634 HAVE_LOCK_CHECK (connection);
635
636 /* This can be called before we even complete authentication, since
637 * it's called on disconnect to clean up the outgoing queue.
638 * It's also called as we successfully send each message.
639 */
640
641 link = _dbus_list_get_last_link (&connection->outgoing_messages);
642 _dbus_assert (link != NULL);
643 _dbus_assert (link->data == message);
644
645 _dbus_list_unlink (&connection->outgoing_messages,
646 link);
647 _dbus_list_prepend_link (&connection->expired_messages, link);
648
649 connection->n_outgoing -= 1;
650
651 _dbus_verbose ("Message %p (%s %s %s %s '%s') removed from outgoing queue %p, %d left to send\n",
652 message,
653 dbus_message_type_to_string (dbus_message_get_type (message)),
654 dbus_message_get_path (message) ?
655 dbus_message_get_path (message) :
656 "no path",
657 dbus_message_get_interface (message) ?
658 dbus_message_get_interface (message) :
659 "no interface",
660 dbus_message_get_member (message) ?
661 dbus_message_get_member (message) :
662 "no member",
663 dbus_message_get_signature (message),
664 connection, connection->n_outgoing);
665
666 /* It's OK that in principle we call the notify function, because for the
667 * outgoing limit, there isn't one */
668 _dbus_message_remove_counter (message, connection->outgoing_counter);
669
670 /* The message will actually be unreffed when we unlock */
671}
672
674 typedef dbus_bool_t (* DBusWatchAddFunction) (DBusWatchList *list,
675 DBusWatch *watch);
677 typedef void (* DBusWatchRemoveFunction) (DBusWatchList *list,
678 DBusWatch *watch);
680 typedef void (* DBusWatchToggleFunction) (DBusWatchList *list,
681 DBusWatch *watch,
682 dbus_bool_t enabled);
683
684static dbus_bool_t
685protected_change_watch (DBusConnection *connection,
686 DBusWatch *watch,
687 DBusWatchAddFunction add_function,
688 DBusWatchRemoveFunction remove_function,
689 DBusWatchToggleFunction toggle_function,
690 dbus_bool_t enabled)
691{
692 dbus_bool_t retval;
693
694 HAVE_LOCK_CHECK (connection);
695
696 /* The original purpose of protected_change_watch() was to hold a
697 * ref on the connection while dropping the connection lock, then
698 * calling out to the app. This was a broken hack that did not
699 * work, since the connection was in a hosed state (no WatchList
700 * field) while calling out.
701 *
702 * So for now we'll just keep the lock while calling out. This means
703 * apps are not allowed to call DBusConnection methods inside a
704 * watch function or they will deadlock.
705 *
706 * The "real fix" is to use the _and_unlock() pattern found
707 * elsewhere in the code, to defer calling out to the app until
708 * we're about to drop locks and return flow of control to the app
709 * anyway.
710 *
711 * See http://lists.freedesktop.org/archives/dbus/2007-July/thread.html#8144
712 */
713
714 if (connection->watches)
715 {
716 if (add_function)
717 retval = (* add_function) (connection->watches, watch);
718 else if (remove_function)
719 {
720 retval = TRUE;
721 (* remove_function) (connection->watches, watch);
722 }
723 else
724 {
725 retval = TRUE;
726 (* toggle_function) (connection->watches, watch, enabled);
727 }
728 return retval;
729 }
730 else
731 return FALSE;
732}
733
734
746 dbus_bool_t
747_dbus_connection_add_watch_unlocked (DBusConnection *connection,
748 DBusWatch *watch)
749{
750 return protected_change_watch (connection, watch,
751 _dbus_watch_list_add_watch,
752 NULL, NULL, FALSE);
753}
754
764void
765_dbus_connection_remove_watch_unlocked (DBusConnection *connection,
766 DBusWatch *watch)
767{
768 protected_change_watch (connection, watch,
769 NULL,
770 _dbus_watch_list_remove_watch,
771 NULL, FALSE);
772}
773
784void
785_dbus_connection_toggle_watch_unlocked (DBusConnection *connection,
786 DBusWatch *watch,
787 dbus_bool_t enabled)
788{
789 _dbus_assert (watch != NULL);
790
791 protected_change_watch (connection, watch,
792 NULL, NULL,
793 _dbus_watch_list_toggle_watch,
794 enabled);
795}
796
798 typedef dbus_bool_t (* DBusTimeoutAddFunction) (DBusTimeoutList *list,
799 DBusTimeout *timeout);
801 typedef void (* DBusTimeoutRemoveFunction) (DBusTimeoutList *list,
802 DBusTimeout *timeout);
804 typedef void (* DBusTimeoutToggleFunction) (DBusTimeoutList *list,
805 DBusTimeout *timeout,
806 dbus_bool_t enabled);
807
808static dbus_bool_t
809protected_change_timeout (DBusConnection *connection,
810 DBusTimeout *timeout,
811 DBusTimeoutAddFunction add_function,
812 DBusTimeoutRemoveFunction remove_function,
813 DBusTimeoutToggleFunction toggle_function,
814 dbus_bool_t enabled)
815{
816 dbus_bool_t retval;
817
818 HAVE_LOCK_CHECK (connection);
819
820 /* The original purpose of protected_change_timeout() was to hold a
821 * ref on the connection while dropping the connection lock, then
822 * calling out to the app. This was a broken hack that did not
823 * work, since the connection was in a hosed state (no TimeoutList
824 * field) while calling out.
825 *
826 * So for now we'll just keep the lock while calling out. This means
827 * apps are not allowed to call DBusConnection methods inside a
828 * timeout function or they will deadlock.
829 *
830 * The "real fix" is to use the _and_unlock() pattern found
831 * elsewhere in the code, to defer calling out to the app until
832 * we're about to drop locks and return flow of control to the app
833 * anyway.
834 *
835 * See http://lists.freedesktop.org/archives/dbus/2007-July/thread.html#8144
836 */
837
838 if (connection->timeouts)
839 {
840 if (add_function)
841 retval = (* add_function) (connection->timeouts, timeout);
842 else if (remove_function)
843 {
844 retval = TRUE;
845 (* remove_function) (connection->timeouts, timeout);
846 }
847 else
848 {
849 retval = TRUE;
850 (* toggle_function) (connection->timeouts, timeout, enabled);
851 }
852 return retval;
853 }
854 else
855 return FALSE;
856}
857
870 dbus_bool_t
871_dbus_connection_add_timeout_unlocked (DBusConnection *connection,
872 DBusTimeout *timeout)
873{
874 return protected_change_timeout (connection, timeout,
875 _dbus_timeout_list_add_timeout,
876 NULL, NULL, FALSE);
877}
878
888void
889_dbus_connection_remove_timeout_unlocked (DBusConnection *connection,
890 DBusTimeout *timeout)
891{
892 protected_change_timeout (connection, timeout,
893 NULL,
894 _dbus_timeout_list_remove_timeout,
895 NULL, FALSE);
896}
897
908void
909_dbus_connection_toggle_timeout_unlocked (DBusConnection *connection,
910 DBusTimeout *timeout,
911 dbus_bool_t enabled)
912{
913 protected_change_timeout (connection, timeout,
914 NULL, NULL,
915 _dbus_timeout_list_toggle_timeout,
916 enabled);
917}
918
919static dbus_bool_t
920_dbus_connection_attach_pending_call_unlocked (DBusConnection *connection,
921 DBusPendingCall *pending)
922{
923 dbus_uint32_t reply_serial;
924 DBusTimeout *timeout;
925
926 HAVE_LOCK_CHECK (connection);
927
928 reply_serial = _dbus_pending_call_get_reply_serial_unlocked (pending);
929
930 _dbus_assert (reply_serial != 0);
931
932 timeout = _dbus_pending_call_get_timeout_unlocked (pending);
933
934 if (timeout)
935 {
936 if (!_dbus_connection_add_timeout_unlocked (connection, timeout))
937 return FALSE;
938
939 if (!_dbus_hash_table_insert_int (connection->pending_replies,
940 reply_serial,
941 pending))
942 {
943 _dbus_connection_remove_timeout_unlocked (connection, timeout);
944
945 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
946 HAVE_LOCK_CHECK (connection);
947 return FALSE;
948 }
949
950 _dbus_pending_call_set_timeout_added_unlocked (pending, TRUE);
951 }
952 else
953 {
954 if (!_dbus_hash_table_insert_int (connection->pending_replies,
955 reply_serial,
956 pending))
957 {
958 HAVE_LOCK_CHECK (connection);
959 return FALSE;
960 }
961 }
962
963 _dbus_pending_call_ref_unlocked (pending);
964
965 HAVE_LOCK_CHECK (connection);
966
967 return TRUE;
968}
969
970static void
971free_pending_call_on_hash_removal (void *data)
972{
973 DBusPendingCall *pending;
974 DBusConnection *connection;
975
976 if (data == NULL)
977 return;
978
979 pending = data;
980
981 connection = _dbus_pending_call_get_connection_unlocked (pending);
982
983 HAVE_LOCK_CHECK (connection);
984
985 if (_dbus_pending_call_is_timeout_added_unlocked (pending))
986 {
987 _dbus_connection_remove_timeout_unlocked (connection,
988 _dbus_pending_call_get_timeout_unlocked (pending));
989
990 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
991 }
992
993 /* FIXME 1.0? this is sort of dangerous and undesirable to drop the lock
994 * here, but the pending call finalizer could in principle call out to
995 * application code so we pretty much have to... some larger code reorg
996 * might be needed.
997 */
998 _dbus_connection_ref_unlocked (connection);
999 _dbus_pending_call_unref_and_unlock (pending);
1000 CONNECTION_LOCK (connection);
1001 _dbus_connection_unref_unlocked (connection);
1002}
1003
1004static void
1005_dbus_connection_detach_pending_call_unlocked (DBusConnection *connection,
1006 DBusPendingCall *pending)
1007{
1008 /* This ends up unlocking to call the pending call finalizer, which is unexpected to
1009 * say the least.
1010 */
1011 _dbus_hash_table_remove_int (connection->pending_replies,
1012 _dbus_pending_call_get_reply_serial_unlocked (pending));
1013}
1014
1015static void
1016_dbus_connection_detach_pending_call_and_unlock (DBusConnection *connection,
1017 DBusPendingCall *pending)
1018{
1019 /* The idea here is to avoid finalizing the pending call
1020 * with the lock held, since there's a destroy notifier
1021 * in pending call that goes out to application code.
1022 *
1023 * There's an extra unlock inside the hash table
1024 * "free pending call" function FIXME...
1025 */
1026 _dbus_pending_call_ref_unlocked (pending);
1027 _dbus_hash_table_remove_int (connection->pending_replies,
1028 _dbus_pending_call_get_reply_serial_unlocked (pending));
1029
1030 if (_dbus_pending_call_is_timeout_added_unlocked (pending))
1031 _dbus_connection_remove_timeout_unlocked (connection,
1032 _dbus_pending_call_get_timeout_unlocked (pending));
1033
1034 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
1035
1036 _dbus_pending_call_unref_and_unlock (pending);
1037}
1038
1047void
1048_dbus_connection_remove_pending_call (DBusConnection *connection,
1049 DBusPendingCall *pending)
1050{
1051 CONNECTION_LOCK (connection);
1052 _dbus_connection_detach_pending_call_and_unlock (connection, pending);
1053}
1054
1064static dbus_bool_t
1065_dbus_connection_acquire_io_path (DBusConnection *connection,
1066 int timeout_milliseconds)
1067{
1068 dbus_bool_t we_acquired;
1069
1070 HAVE_LOCK_CHECK (connection);
1071
1072 /* We don't want the connection to vanish */
1073 _dbus_connection_ref_unlocked (connection);
1074
1075 /* We will only touch io_path_acquired which is protected by our mutex */
1076 CONNECTION_UNLOCK (connection);
1077
1078 _dbus_verbose ("locking io_path_mutex\n");
1079 _dbus_cmutex_lock (connection->io_path_mutex);
1080
1081 _dbus_verbose ("start connection->io_path_acquired = %d timeout = %d\n",
1082 connection->io_path_acquired, timeout_milliseconds);
1083
1084 we_acquired = FALSE;
1085
1086 if (connection->io_path_acquired)
1087 {
1088 if (timeout_milliseconds != -1)
1089 {
1090 _dbus_verbose ("waiting %d for IO path to be acquirable\n",
1091 timeout_milliseconds);
1092
1093 if (!_dbus_condvar_wait_timeout (connection->io_path_cond,
1094 connection->io_path_mutex,
1095 timeout_milliseconds))
1096 {
1097 /* We timed out before anyone signaled. */
1098 /* (writing the loop to handle the !timedout case by
1099 * waiting longer if needed is a pain since dbus
1100 * wraps pthread_cond_timedwait to take a relative
1101 * time instead of absolute, something kind of stupid
1102 * on our part. for now it doesn't matter, we will just
1103 * end up back here eventually.)
1104 */
1105 }
1106 }
1107 else
1108 {
1109 while (connection->io_path_acquired)
1110 {
1111 _dbus_verbose ("waiting for IO path to be acquirable\n");
1112 _dbus_condvar_wait (connection->io_path_cond,
1113 connection->io_path_mutex);
1114 }
1115 }
1116 }
1117
1118 if (!connection->io_path_acquired)
1119 {
1120 we_acquired = TRUE;
1121 connection->io_path_acquired = TRUE;
1122 }
1123
1124 _dbus_verbose ("end connection->io_path_acquired = %d we_acquired = %d\n",
1125 connection->io_path_acquired, we_acquired);
1126
1127 _dbus_verbose ("unlocking io_path_mutex\n");
1128 _dbus_cmutex_unlock (connection->io_path_mutex);
1129
1130 CONNECTION_LOCK (connection);
1131
1132 HAVE_LOCK_CHECK (connection);
1133
1134 _dbus_connection_unref_unlocked (connection);
1135
1136 return we_acquired;
1137}
1138
1146static void
1147_dbus_connection_release_io_path (DBusConnection *connection)
1148{
1149 HAVE_LOCK_CHECK (connection);
1150
1151 _dbus_verbose ("locking io_path_mutex\n");
1152 _dbus_cmutex_lock (connection->io_path_mutex);
1153
1154 _dbus_assert (connection->io_path_acquired);
1155
1156 _dbus_verbose ("start connection->io_path_acquired = %d\n",
1157 connection->io_path_acquired);
1158
1159 connection->io_path_acquired = FALSE;
1160 _dbus_condvar_wake_one (connection->io_path_cond);
1161
1162 _dbus_verbose ("unlocking io_path_mutex\n");
1163 _dbus_cmutex_unlock (connection->io_path_mutex);
1164}
1165
1201void
1202_dbus_connection_do_iteration_unlocked (DBusConnection *connection,
1203 DBusPendingCall *pending,
1204 unsigned int flags,
1205 int timeout_milliseconds)
1206{
1207 _dbus_verbose ("start\n");
1208
1209 HAVE_LOCK_CHECK (connection);
1210
1211 if (connection->n_outgoing == 0)
1212 flags &= ~DBUS_ITERATION_DO_WRITING;
1213
1214 if (_dbus_connection_acquire_io_path (connection,
1215 (flags & DBUS_ITERATION_BLOCK) ? timeout_milliseconds : 0))
1216 {
1217 HAVE_LOCK_CHECK (connection);
1218
1219 if ( (pending != NULL) && _dbus_pending_call_get_completed_unlocked(pending))
1220 {
1221 _dbus_verbose ("pending call completed while acquiring I/O path");
1222 }
1223 else if ( (pending != NULL) &&
1224 _dbus_connection_peek_for_reply_unlocked (connection,
1225 _dbus_pending_call_get_reply_serial_unlocked (pending)))
1226 {
1227 _dbus_verbose ("pending call completed while acquiring I/O path (reply found in queue)");
1228 }
1229 else
1230 {
1231 _dbus_transport_do_iteration (connection->transport,
1232 flags, timeout_milliseconds);
1233 }
1234
1235 _dbus_connection_release_io_path (connection);
1236 }
1237
1238 HAVE_LOCK_CHECK (connection);
1239
1240 _dbus_verbose ("end\n");
1241}
1242
1252 DBusConnection*
1253_dbus_connection_new_for_transport (DBusTransport *transport)
1254{
1255 DBusConnection *connection;
1256 DBusWatchList *watch_list;
1257 DBusTimeoutList *timeout_list;
1258 DBusHashTable *pending_replies;
1259 DBusList *disconnect_link;
1260 DBusMessage *disconnect_message;
1261 DBusCounter *outgoing_counter;
1262 DBusObjectTree *objects;
1263
1264 watch_list = NULL;
1265 connection = NULL;
1266 pending_replies = NULL;
1267 timeout_list = NULL;
1268 disconnect_link = NULL;
1269 disconnect_message = NULL;
1270 outgoing_counter = NULL;
1271 objects = NULL;
1272
1273 watch_list = _dbus_watch_list_new ();
1274 if (watch_list == NULL)
1275 goto error;
1276
1277 timeout_list = _dbus_timeout_list_new ();
1278 if (timeout_list == NULL)
1279 goto error;
1280
1281 pending_replies =
1282 _dbus_hash_table_new (DBUS_HASH_INT,
1283 NULL,
1284 (DBusFreeFunction)free_pending_call_on_hash_removal);
1285 if (pending_replies == NULL)
1286 goto error;
1287
1288 connection = dbus_new0 (DBusConnection, 1);
1289 if (connection == NULL)
1290 goto error;
1291
1292 _dbus_rmutex_new_at_location (&connection->mutex);
1293 if (connection->mutex == NULL)
1294 goto error;
1295
1296 _dbus_cmutex_new_at_location (&connection->io_path_mutex);
1297 if (connection->io_path_mutex == NULL)
1298 goto error;
1299
1300 _dbus_cmutex_new_at_location (&connection->dispatch_mutex);
1301 if (connection->dispatch_mutex == NULL)
1302 goto error;
1303
1304 _dbus_condvar_new_at_location (&connection->dispatch_cond);
1305 if (connection->dispatch_cond == NULL)
1306 goto error;
1307
1308 _dbus_condvar_new_at_location (&connection->io_path_cond);
1309 if (connection->io_path_cond == NULL)
1310 goto error;
1311
1312 _dbus_rmutex_new_at_location (&connection->slot_mutex);
1313 if (connection->slot_mutex == NULL)
1314 goto error;
1315
1316 disconnect_message = dbus_message_new_signal (DBUS_PATH_LOCAL,
1317 DBUS_INTERFACE_LOCAL,
1318 "Disconnected");
1319
1320 if (disconnect_message == NULL)
1321 goto error;
1322
1323 disconnect_link = _dbus_list_alloc_link (disconnect_message);
1324 if (disconnect_link == NULL)
1325 goto error;
1326
1327 outgoing_counter = _dbus_counter_new ();
1328 if (outgoing_counter == NULL)
1329 goto error;
1330
1331 objects = _dbus_object_tree_new (connection);
1332 if (objects == NULL)
1333 goto error;
1334
1335 if (_dbus_atomic_get (&_dbus_modify_sigpipe) != 0)
1336 _dbus_disable_sigpipe ();
1337
1338 /* initialized to 0: use atomic op to avoid mixing atomic and non-atomic */
1339 _dbus_atomic_inc (&connection->refcount);
1340 connection->transport = transport;
1341 connection->watches = watch_list;
1342 connection->timeouts = timeout_list;
1343 connection->pending_replies = pending_replies;
1344 connection->outgoing_counter = outgoing_counter;
1345 connection->filter_list = NULL;
1346 connection->last_dispatch_status = DBUS_DISPATCH_COMPLETE; /* so we're notified first time there's data */
1347 connection->objects = objects;
1348 connection->exit_on_disconnect = FALSE;
1349 connection->shareable = FALSE;
1350 connection->builtin_filters_enabled = TRUE;
1351 connection->route_peer_messages = FALSE;
1352 connection->disconnected_message_arrived = FALSE;
1353 connection->disconnected_message_processed = FALSE;
1354
1355#if defined(DBUS_ENABLE_CHECKS) || defined(DBUS_ENABLE_ASSERT)
1356 connection->generation = _dbus_current_generation;
1357#endif
1358
1359 _dbus_data_slot_list_init (&connection->slot_list);
1360
1361 connection->client_serial = 1;
1362
1363 connection->disconnect_message_link = disconnect_link;
1364
1365 CONNECTION_LOCK (connection);
1366
1367 if (!_dbus_transport_set_connection (transport, connection))
1368 {
1369 CONNECTION_UNLOCK (connection);
1370
1371 goto error;
1372 }
1373
1374 _dbus_transport_ref (transport);
1375
1376 CONNECTION_UNLOCK (connection);
1377
1378 _dbus_connection_trace_ref (connection, 0, 1, "new_for_transport");
1379 return connection;
1380
1381 error:
1382 if (disconnect_message != NULL)
1383 dbus_message_unref (disconnect_message);
1384
1385 if (disconnect_link != NULL)
1386 _dbus_list_free_link (disconnect_link);
1387
1388 if (connection != NULL)
1389 {
1390 _dbus_condvar_free_at_location (&connection->io_path_cond);
1391 _dbus_condvar_free_at_location (&connection->dispatch_cond);
1392 _dbus_rmutex_free_at_location (&connection->mutex);
1393 _dbus_cmutex_free_at_location (&connection->io_path_mutex);
1394 _dbus_cmutex_free_at_location (&connection->dispatch_mutex);
1395 _dbus_rmutex_free_at_location (&connection->slot_mutex);
1396 dbus_free (connection);
1397 }
1398 if (pending_replies)
1399 _dbus_hash_table_unref (pending_replies);
1400
1401 if (watch_list)
1402 _dbus_watch_list_free (watch_list);
1403
1404 if (timeout_list)
1405 _dbus_timeout_list_free (timeout_list);
1406
1407 if (outgoing_counter)
1408 _dbus_counter_unref (outgoing_counter);
1409
1410 if (objects)
1411 _dbus_object_tree_unref (objects);
1412
1413 return NULL;
1414}
1415
1423 DBusConnection *
1424_dbus_connection_ref_unlocked (DBusConnection *connection)
1425{
1426 dbus_int32_t old_refcount;
1427
1428 _dbus_assert (connection != NULL);
1429 _dbus_assert (connection->generation == _dbus_current_generation);
1430
1431 HAVE_LOCK_CHECK (connection);
1432
1433 old_refcount = _dbus_atomic_inc (&connection->refcount);
1434 _dbus_connection_trace_ref (connection, old_refcount, old_refcount + 1,
1435 "ref_unlocked");
1436
1437 return connection;
1438}
1439
1446void
1447_dbus_connection_unref_unlocked (DBusConnection *connection)
1448{
1449 dbus_int32_t old_refcount;
1450
1451 HAVE_LOCK_CHECK (connection);
1452
1453 _dbus_assert (connection != NULL);
1454
1455 old_refcount = _dbus_atomic_dec (&connection->refcount);
1456
1457 _dbus_connection_trace_ref (connection, old_refcount, old_refcount - 1,
1458 "unref_unlocked");
1459
1460 if (old_refcount == 1)
1461 _dbus_connection_last_unref (connection);
1462}
1463
1473 dbus_uint32_t
1474_dbus_connection_get_next_client_serial (DBusConnection *connection)
1475{
1476 dbus_uint32_t serial;
1477
1478 serial = connection->client_serial++;
1479
1480 if (connection->client_serial == 0)
1481 connection->client_serial = 1;
1482
1483 return serial;
1484}
1485
1499 dbus_bool_t
1500_dbus_connection_handle_watch (DBusWatch *watch,
1501 unsigned int condition,
1502 void *data)
1503{
1504 DBusConnection *connection;
1505 dbus_bool_t retval;
1506 DBusDispatchStatus status;
1507
1508 connection = data;
1509
1510 _dbus_verbose ("start\n");
1511
1512 CONNECTION_LOCK (connection);
1513
1514 if (!_dbus_connection_acquire_io_path (connection, 1))
1515 {
1516 /* another thread is handling the message */
1517 CONNECTION_UNLOCK (connection);
1518 return TRUE;
1519 }
1520
1521 HAVE_LOCK_CHECK (connection);
1522 retval = _dbus_transport_handle_watch (connection->transport,
1523 watch, condition);
1524
1525 _dbus_connection_release_io_path (connection);
1526
1527 HAVE_LOCK_CHECK (connection);
1528
1529 _dbus_verbose ("middle\n");
1530
1531 status = _dbus_connection_get_dispatch_status_unlocked (connection);
1532
1533 /* this calls out to user code */
1534 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
1535
1536 _dbus_verbose ("end\n");
1537
1538 return retval;
1539}
1540
1541/* Protected by _DBUS_LOCK (shared_connections) */
1542static DBusHashTable *shared_connections = NULL;
1543static DBusList *shared_connections_no_guid = NULL;
1544
1545static void
1546close_connection_on_shutdown (DBusConnection *connection)
1547{
1548 DBusMessage *message;
1549
1550 dbus_connection_ref (connection);
1551 _dbus_connection_close_possibly_shared (connection);
1552
1553 /* Churn through to the Disconnected message */
1554 while ((message = dbus_connection_pop_message (connection)))
1555 {
1556 dbus_message_unref (message);
1557 }
1558 dbus_connection_unref (connection);
1559}
1560
1561static void
1562shared_connections_shutdown (void *data)
1563{
1564 int n_entries;
1565
1566 if (!_DBUS_LOCK (shared_connections))
1567 {
1568 /* We'd have initialized locks before adding anything, so there
1569 * can't be anything there. */
1570 return;
1571 }
1572
1573 /* This is a little bit unpleasant... better ideas? */
1574 while ((n_entries = _dbus_hash_table_get_n_entries (shared_connections)) > 0)
1575 {
1576 DBusConnection *connection;
1577 DBusHashIter iter;
1578
1579 _dbus_hash_iter_init (shared_connections, &iter);
1580 _dbus_hash_iter_next (&iter);
1581
1582 connection = _dbus_hash_iter_get_value (&iter);
1583
1584 _DBUS_UNLOCK (shared_connections);
1585 close_connection_on_shutdown (connection);
1586 if (!_DBUS_LOCK (shared_connections))
1587 _dbus_assert_not_reached ("global locks were already initialized");
1588
1589 /* The connection should now be dead and not in our hash ... */
1590 _dbus_assert (_dbus_hash_table_get_n_entries (shared_connections) < n_entries);
1591 }
1592
1593 _dbus_assert (_dbus_hash_table_get_n_entries (shared_connections) == 0);
1594
1595 _dbus_hash_table_unref (shared_connections);
1596 shared_connections = NULL;
1597
1598 if (shared_connections_no_guid != NULL)
1599 {
1600 DBusConnection *connection;
1601 connection = _dbus_list_pop_first (&shared_connections_no_guid);
1602 while (connection != NULL)
1603 {
1604 _DBUS_UNLOCK (shared_connections);
1605 close_connection_on_shutdown (connection);
1606 if (!_DBUS_LOCK (shared_connections))
1607 _dbus_assert_not_reached ("global locks were already initialized");
1608 connection = _dbus_list_pop_first (&shared_connections_no_guid);
1609 }
1610 }
1611
1612 shared_connections_no_guid = NULL;
1613
1614 _DBUS_UNLOCK (shared_connections);
1615}
1616
1617static dbus_bool_t
1618connection_lookup_shared (DBusAddressEntry *entry,
1619 DBusConnection **result)
1620{
1621 _dbus_verbose ("checking for existing connection\n");
1622
1623 *result = NULL;
1624
1625 if (!_DBUS_LOCK (shared_connections))
1626 {
1627 /* If it was shared, we'd have initialized global locks when we put
1628 * it in shared_connections. */
1629 return FALSE;
1630 }
1631
1632 if (shared_connections == NULL)
1633 {
1634 _dbus_verbose ("creating shared_connections hash table\n");
1635
1636 shared_connections = _dbus_hash_table_new (DBUS_HASH_STRING,
1637 dbus_free,
1638 NULL);
1639 if (shared_connections == NULL)
1640 {
1641 _DBUS_UNLOCK (shared_connections);
1642 return FALSE;
1643 }
1644
1645 if (!_dbus_register_shutdown_func (shared_connections_shutdown, NULL))
1646 {
1647 _dbus_hash_table_unref (shared_connections);
1648 shared_connections = NULL;
1649 _DBUS_UNLOCK (shared_connections);
1650 return FALSE;
1651 }
1652
1653 _dbus_verbose (" successfully created shared_connections\n");
1654
1655 _DBUS_UNLOCK (shared_connections);
1656 return TRUE; /* no point looking up in the hash we just made */
1657 }
1658 else
1659 {
1660 const char *guid;
1661
1662 guid = dbus_address_entry_get_value (entry, "guid");
1663
1664 if (guid != NULL)
1665 {
1666 DBusConnection *connection;
1667
1668 connection = _dbus_hash_table_lookup_string (shared_connections,
1669 guid);
1670
1671 if (connection)
1672 {
1673 /* The DBusConnection can't be finalized without taking
1674 * the shared_connections lock to remove it from the
1675 * hash. So it's safe to ref the connection here.
1676 * However, it may be disconnected if the Disconnected
1677 * message hasn't been processed yet, in which case we
1678 * want to pretend it isn't in the hash and avoid
1679 * returning it.
1680 *
1681 * The idea is to avoid ever returning a disconnected connection
1682 * from dbus_connection_open(). We could just synchronously
1683 * drop our shared ref to the connection on connection disconnect,
1684 * and then assert here that the connection is connected, but
1685 * that causes reentrancy headaches.
1686 */
1687 CONNECTION_LOCK (connection);
1688 if (_dbus_connection_get_is_connected_unlocked (connection))
1689 {
1690 _dbus_connection_ref_unlocked (connection);
1691 *result = connection;
1692 _dbus_verbose ("looked up existing connection to server guid %s\n",
1693 guid);
1694 }
1695 else
1696 {
1697 _dbus_verbose ("looked up existing connection to server guid %s but it was disconnected so ignoring it\n",
1698 guid);
1699 }
1700 CONNECTION_UNLOCK (connection);
1701 }
1702 }
1703
1704 _DBUS_UNLOCK (shared_connections);
1705 return TRUE;
1706 }
1707}
1708
1709static dbus_bool_t
1710connection_record_shared_unlocked (DBusConnection *connection,
1711 const char *guid)
1712{
1713 char *guid_key;
1714 char *guid_in_connection;
1715
1716 HAVE_LOCK_CHECK (connection);
1717 _dbus_assert (connection->server_guid == NULL);
1718 _dbus_assert (connection->shareable);
1719
1720 /* get a hard ref on this connection, even if
1721 * we won't in fact store it in the hash, we still
1722 * need to hold a ref on it until it's disconnected.
1723 */
1724 _dbus_connection_ref_unlocked (connection);
1725
1726 if (guid == NULL)
1727 {
1728 if (!_DBUS_LOCK (shared_connections))
1729 return FALSE;
1730
1731 if (!_dbus_list_prepend (&shared_connections_no_guid, connection))
1732 {
1733 _DBUS_UNLOCK (shared_connections);
1734 return FALSE;
1735 }
1736
1737 _DBUS_UNLOCK (shared_connections);
1738 return TRUE; /* don't store in the hash */
1739 }
1740
1741 /* A separate copy of the key is required in the hash table, because
1742 * we don't have a lock on the connection when we are doing a hash
1743 * lookup.
1744 */
1745
1746 guid_key = _dbus_strdup (guid);
1747 if (guid_key == NULL)
1748 return FALSE;
1749
1750 guid_in_connection = _dbus_strdup (guid);
1751 if (guid_in_connection == NULL)
1752 {
1753 dbus_free (guid_key);
1754 return FALSE;
1755 }
1756
1757 if (!_DBUS_LOCK (shared_connections))
1758 {
1759 dbus_free (guid_in_connection);
1760 dbus_free (guid_key);
1761 return FALSE;
1762 }
1763
1764 _dbus_assert (shared_connections != NULL);
1765
1766 if (!_dbus_hash_table_insert_string (shared_connections,
1767 guid_key, connection))
1768 {
1769 dbus_free (guid_key);
1770 dbus_free (guid_in_connection);
1771 _DBUS_UNLOCK (shared_connections);
1772 return FALSE;
1773 }
1774
1775 connection->server_guid = guid_in_connection;
1776
1777 _dbus_verbose ("stored connection to %s to be shared\n",
1778 connection->server_guid);
1779
1780 _DBUS_UNLOCK (shared_connections);
1781
1782 _dbus_assert (connection->server_guid != NULL);
1783
1784 return TRUE;
1785}
1786
1787static void
1788connection_forget_shared_unlocked (DBusConnection *connection)
1789{
1790 HAVE_LOCK_CHECK (connection);
1791
1792 if (!connection->shareable)
1793 return;
1794
1795 if (!_DBUS_LOCK (shared_connections))
1796 {
1797 /* If it was shared, we'd have initialized global locks when we put
1798 * it in the table; so it can't be there. */
1799 return;
1800 }
1801
1802 if (connection->server_guid != NULL)
1803 {
1804 _dbus_verbose ("dropping connection to %s out of the shared table\n",
1805 connection->server_guid);
1806
1807 if (!_dbus_hash_table_remove_string (shared_connections,
1808 connection->server_guid))
1809 _dbus_assert_not_reached ("connection was not in the shared table");
1810
1811 dbus_free (connection->server_guid);
1812 connection->server_guid = NULL;
1813 }
1814 else
1815 {
1816 _dbus_list_remove (&shared_connections_no_guid, connection);
1817 }
1818
1819 _DBUS_UNLOCK (shared_connections);
1820
1821 /* remove our reference held on all shareable connections */
1822 _dbus_connection_unref_unlocked (connection);
1823}
1824
1825static DBusConnection*
1826connection_try_from_address_entry (DBusAddressEntry *entry,
1827 DBusError *error)
1828{
1829 DBusTransport *transport;
1830 DBusConnection *connection;
1831
1832 transport = _dbus_transport_open (entry, error);
1833
1834 if (transport == NULL)
1835 {
1836 _DBUS_ASSERT_ERROR_IS_SET (error);
1837 return NULL;
1838 }
1839
1840 connection = _dbus_connection_new_for_transport (transport);
1841
1842 _dbus_transport_unref (transport);
1843
1844 if (connection == NULL)
1845 {
1846 _DBUS_SET_OOM (error);
1847 return NULL;
1848 }
1849
1850#ifndef DBUS_DISABLE_CHECKS
1851 _dbus_assert (!connection->have_connection_lock);
1852#endif
1853 return connection;
1854}
1855
1856/*
1857 * If the shared parameter is true, then any existing connection will
1858 * be used (and if a new connection is created, it will be available
1859 * for use by others). If the shared parameter is false, a new
1860 * connection will always be created, and the new connection will
1861 * never be returned to other callers.
1862 *
1863 * @param address the address
1864 * @param shared whether the connection is shared or private
1865 * @param error error return
1866 * @returns the connection or #NULL on error
1867 */
1868static DBusConnection*
1869_dbus_connection_open_internal (const char *address,
1870 dbus_bool_t shared,
1871 DBusError *error)
1872{
1873 DBusConnection *connection;
1874 DBusAddressEntry **entries;
1875 DBusError tmp_error = DBUS_ERROR_INIT;
1876 DBusError first_error = DBUS_ERROR_INIT;
1877 int len, i;
1878
1879 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1880
1881 _dbus_verbose ("opening %s connection to: %s\n",
1882 shared ? "shared" : "private", address);
1883
1884 if (!dbus_parse_address (address, &entries, &len, error))
1885 return NULL;
1886
1887 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1888
1889 connection = NULL;
1890
1891 for (i = 0; i < len; i++)
1892 {
1893 if (shared)
1894 {
1895 if (!connection_lookup_shared (entries[i], &connection))
1896 _DBUS_SET_OOM (&tmp_error);
1897 }
1898
1899 if (connection == NULL)
1900 {
1901 connection = connection_try_from_address_entry (entries[i],
1902 &tmp_error);
1903
1904 if (connection != NULL && shared)
1905 {
1906 const char *guid;
1907
1908 connection->shareable = TRUE;
1909
1910 /* guid may be NULL */
1911 guid = dbus_address_entry_get_value (entries[i], "guid");
1912
1913 CONNECTION_LOCK (connection);
1914
1915 if (!connection_record_shared_unlocked (connection, guid))
1916 {
1917 _DBUS_SET_OOM (&tmp_error);
1918 _dbus_connection_close_possibly_shared_and_unlock (connection);
1919 dbus_connection_unref (connection);
1920 connection = NULL;
1921 }
1922 else
1923 CONNECTION_UNLOCK (connection);
1924 }
1925 }
1926
1927 if (connection)
1928 break;
1929
1930 _DBUS_ASSERT_ERROR_IS_SET (&tmp_error);
1931
1932 if (i == 0)
1933 dbus_move_error (&tmp_error, &first_error);
1934 else
1935 dbus_error_free (&tmp_error);
1936 }
1937
1938 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1939 _DBUS_ASSERT_ERROR_IS_CLEAR (&tmp_error);
1940
1941 if (connection == NULL)
1942 {
1943 _DBUS_ASSERT_ERROR_IS_SET (&first_error);
1944 dbus_move_error (&first_error, error);
1945 }
1946 else
1947 dbus_error_free (&first_error);
1948
1949 dbus_address_entries_free (entries);
1950 return connection;
1951}
1952
1961void
1962_dbus_connection_close_possibly_shared (DBusConnection *connection)
1963{
1964 _dbus_assert (connection != NULL);
1965 _dbus_assert (connection->generation == _dbus_current_generation);
1966
1967 CONNECTION_LOCK (connection);
1968 _dbus_connection_close_possibly_shared_and_unlock (connection);
1969}
1970
1971static DBusPreallocatedSend*
1972_dbus_connection_preallocate_send_unlocked (DBusConnection *connection)
1973{
1974 DBusPreallocatedSend *preallocated;
1975
1976 HAVE_LOCK_CHECK (connection);
1977
1978 _dbus_assert (connection != NULL);
1979
1980 preallocated = dbus_new (DBusPreallocatedSend, 1);
1981 if (preallocated == NULL)
1982 return NULL;
1983
1984 preallocated->queue_link = _dbus_list_alloc_link (NULL);
1985 if (preallocated->queue_link == NULL)
1986 goto failed_0;
1987
1988 preallocated->counter_link = _dbus_list_alloc_link (connection->outgoing_counter);
1989 if (preallocated->counter_link == NULL)
1990 goto failed_1;
1991
1992 _dbus_counter_ref (preallocated->counter_link->data);
1993
1994 preallocated->connection = connection;
1995
1996 return preallocated;
1997
1998 failed_1:
1999 _dbus_list_free_link (preallocated->queue_link);
2000 failed_0:
2001 dbus_free (preallocated);
2002
2003 return NULL;
2004}
2005
2006/* Called with lock held, does not update dispatch status */
2007static void
2008_dbus_connection_send_preallocated_unlocked_no_update (DBusConnection *connection,
2009 DBusPreallocatedSend *preallocated,
2010 DBusMessage *message,
2011 dbus_uint32_t *client_serial)
2012{
2013 dbus_uint32_t serial;
2014
2015 preallocated->queue_link->data = message;
2016 _dbus_list_prepend_link (&connection->outgoing_messages,
2017 preallocated->queue_link);
2018
2019 /* It's OK that we'll never call the notify function, because for the
2020 * outgoing limit, there isn't one */
2021 _dbus_message_add_counter_link (message,
2022 preallocated->counter_link);
2023
2024 dbus_free (preallocated);
2025 preallocated = NULL;
2026
2027 dbus_message_ref (message);
2028
2029 connection->n_outgoing += 1;
2030
2031 _dbus_verbose ("Message %p (%s %s %s %s '%s') for %s added to outgoing queue %p, %d pending to send\n",
2032 message,
2033 dbus_message_type_to_string (dbus_message_get_type (message)),
2034 dbus_message_get_path (message) ?
2035 dbus_message_get_path (message) :
2036 "no path",
2037 dbus_message_get_interface (message) ?
2038 dbus_message_get_interface (message) :
2039 "no interface",
2040 dbus_message_get_member (message) ?
2041 dbus_message_get_member (message) :
2042 "no member",
2043 dbus_message_get_signature (message),
2044 dbus_message_get_destination (message) ?
2045 dbus_message_get_destination (message) :
2046 "null",
2047 connection,
2048 connection->n_outgoing);
2049
2050 if (dbus_message_get_serial (message) == 0)
2051 {
2052 serial = _dbus_connection_get_next_client_serial (connection);
2053 dbus_message_set_serial (message, serial);
2054 if (client_serial)
2055 *client_serial = serial;
2056 }
2057 else
2058 {
2059 if (client_serial)
2060 *client_serial = dbus_message_get_serial (message);
2061 }
2062
2063 _dbus_verbose ("Message %p serial is %u\n",
2064 message, dbus_message_get_serial (message));
2065
2066 dbus_message_lock (message);
2067
2068 /* Now we need to run an iteration to hopefully just write the messages
2069 * out immediately, and otherwise get them queued up
2070 */
2071 _dbus_connection_do_iteration_unlocked (connection,
2072 NULL,
2073 DBUS_ITERATION_DO_WRITING,
2074 -1);
2075
2076 /* If stuff is still queued up, be sure we wake up the main loop */
2077 if (connection->n_outgoing > 0)
2078 _dbus_connection_wakeup_mainloop (connection);
2079}
2080
2081static void
2082_dbus_connection_send_preallocated_and_unlock (DBusConnection *connection,
2083 DBusPreallocatedSend *preallocated,
2084 DBusMessage *message,
2085 dbus_uint32_t *client_serial)
2086{
2087 DBusDispatchStatus status;
2088
2089 HAVE_LOCK_CHECK (connection);
2090
2091 _dbus_connection_send_preallocated_unlocked_no_update (connection,
2092 preallocated,
2093 message, client_serial);
2094
2095 _dbus_verbose ("middle\n");
2096 status = _dbus_connection_get_dispatch_status_unlocked (connection);
2097
2098 /* this calls out to user code */
2099 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2100}
2101
2111 dbus_bool_t
2112_dbus_connection_send_and_unlock (DBusConnection *connection,
2113 DBusMessage *message,
2114 dbus_uint32_t *client_serial)
2115{
2116 DBusPreallocatedSend *preallocated;
2117
2118 _dbus_assert (connection != NULL);
2119 _dbus_assert (message != NULL);
2120
2121 preallocated = _dbus_connection_preallocate_send_unlocked (connection);
2122 if (preallocated == NULL)
2123 {
2124 CONNECTION_UNLOCK (connection);
2125 return FALSE;
2126 }
2127
2128 _dbus_connection_send_preallocated_and_unlock (connection,
2129 preallocated,
2130 message,
2131 client_serial);
2132 return TRUE;
2133}
2134
2159void
2160_dbus_connection_close_if_only_one_ref (DBusConnection *connection)
2161{
2162 dbus_int32_t refcount;
2163
2164 CONNECTION_LOCK (connection);
2165
2166 refcount = _dbus_atomic_get (&connection->refcount);
2167 /* The caller should have at least one ref */
2168 _dbus_assert (refcount >= 1);
2169
2170 if (refcount == 1)
2171 _dbus_connection_close_possibly_shared_and_unlock (connection);
2172 else
2173 CONNECTION_UNLOCK (connection);
2174}
2175
2176
2186static void
2187_dbus_memory_pause_based_on_timeout (int timeout_milliseconds)
2188{
2189 if (timeout_milliseconds == -1)
2190 _dbus_sleep_milliseconds (1000);
2191 else if (timeout_milliseconds < 100)
2192 ; /* just busy loop */
2193 else if (timeout_milliseconds <= 1000)
2194 _dbus_sleep_milliseconds (timeout_milliseconds / 3);
2195 else
2196 _dbus_sleep_milliseconds (1000);
2197}
2198
2199static DBusMessage *
2200generate_local_error_message (dbus_uint32_t serial,
2201 const char *error_name,
2202 const char *error_msg)
2203{
2204 DBusMessage *message;
2205 message = dbus_message_new (DBUS_MESSAGE_TYPE_ERROR);
2206 if (!message)
2207 goto out;
2208
2209 if (!dbus_message_set_error_name (message, error_name))
2210 {
2211 dbus_message_unref (message);
2212 message = NULL;
2213 goto out;
2214 }
2215
2216 dbus_message_set_no_reply (message, TRUE);
2217
2218 if (!dbus_message_set_reply_serial (message,
2219 serial))
2220 {
2221 dbus_message_unref (message);
2222 message = NULL;
2223 goto out;
2224 }
2225
2226 if (error_msg != NULL)
2227 {
2228 DBusMessageIter iter;
2229
2230 dbus_message_iter_init_append (message, &iter);
2231 if (!dbus_message_iter_append_basic (&iter,
2232 DBUS_TYPE_STRING,
2233 &error_msg))
2234 {
2235 dbus_message_unref (message);
2236 message = NULL;
2237 goto out;
2238 }
2239 }
2240
2241 out:
2242 return message;
2243}
2244
2245/*
2246 * Peek the incoming queue to see if we got reply for a specific serial
2247 */
2248static dbus_bool_t
2249_dbus_connection_peek_for_reply_unlocked (DBusConnection *connection,
2250 dbus_uint32_t client_serial)
2251{
2252 DBusList *link;
2253 HAVE_LOCK_CHECK (connection);
2254
2255 link = _dbus_list_get_first_link (&connection->incoming_messages);
2256
2257 while (link != NULL)
2258 {
2259 DBusMessage *reply = link->data;
2260
2261 if (dbus_message_get_reply_serial (reply) == client_serial)
2262 {
2263 _dbus_verbose ("%s reply to %d found in queue\n", _DBUS_FUNCTION_NAME, client_serial);
2264 return TRUE;
2265 }
2266 link = _dbus_list_get_next_link (&connection->incoming_messages, link);
2267 }
2268
2269 return FALSE;
2270}
2271
2272/* This is slightly strange since we can pop a message here without
2273 * the dispatch lock.
2274 */
2275static DBusMessage*
2276check_for_reply_unlocked (DBusConnection *connection,
2277 dbus_uint32_t client_serial)
2278{
2279 DBusList *link;
2280
2281 HAVE_LOCK_CHECK (connection);
2282
2283 link = _dbus_list_get_first_link (&connection->incoming_messages);
2284
2285 while (link != NULL)
2286 {
2287 DBusMessage *reply = link->data;
2288
2289 if (dbus_message_get_reply_serial (reply) == client_serial)
2290 {
2291 _dbus_list_remove_link (&connection->incoming_messages, link);
2292 connection->n_incoming -= 1;
2293 return reply;
2294 }
2295 link = _dbus_list_get_next_link (&connection->incoming_messages, link);
2296 }
2297
2298 return NULL;
2299}
2300
2301static void
2302connection_timeout_and_complete_all_pending_calls_unlocked (DBusConnection *connection)
2303{
2304 /* We can't iterate over the hash in the normal way since we'll be
2305 * dropping the lock for each item. So we restart the
2306 * iter each time as we drain the hash table.
2307 */
2308
2309 while (_dbus_hash_table_get_n_entries (connection->pending_replies) > 0)
2310 {
2311 DBusPendingCall *pending;
2312 DBusHashIter iter;
2313
2314 _dbus_hash_iter_init (connection->pending_replies, &iter);
2315 _dbus_hash_iter_next (&iter);
2316
2317 pending = _dbus_hash_iter_get_value (&iter);
2318 _dbus_pending_call_ref_unlocked (pending);
2319
2320 _dbus_pending_call_queue_timeout_error_unlocked (pending,
2321 connection);
2322
2323 if (_dbus_pending_call_is_timeout_added_unlocked (pending))
2324 _dbus_connection_remove_timeout_unlocked (connection,
2325 _dbus_pending_call_get_timeout_unlocked (pending));
2326 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
2327 _dbus_hash_iter_remove_entry (&iter);
2328
2329 _dbus_pending_call_unref_and_unlock (pending);
2330 CONNECTION_LOCK (connection);
2331 }
2332 HAVE_LOCK_CHECK (connection);
2333}
2334
2335static void
2336complete_pending_call_and_unlock (DBusConnection *connection,
2337 DBusPendingCall *pending,
2338 DBusMessage *message)
2339{
2340 _dbus_pending_call_set_reply_unlocked (pending, message);
2341 _dbus_pending_call_ref_unlocked (pending); /* in case there's no app with a ref held */
2342 _dbus_pending_call_start_completion_unlocked(pending);
2343 _dbus_connection_detach_pending_call_and_unlock (connection, pending);
2344
2345 /* Must be called unlocked since it invokes app callback */
2346 _dbus_pending_call_finish_completion (pending);
2347 dbus_pending_call_unref (pending);
2348}
2349
2350static dbus_bool_t
2351check_for_reply_and_update_dispatch_unlocked (DBusConnection *connection,
2352 DBusPendingCall *pending)
2353{
2354 DBusMessage *reply;
2355 DBusDispatchStatus status;
2356
2357 reply = check_for_reply_unlocked (connection,
2358 _dbus_pending_call_get_reply_serial_unlocked (pending));
2359 if (reply != NULL)
2360 {
2361 _dbus_verbose ("checked for reply\n");
2362
2363 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): got reply\n");
2364
2365 complete_pending_call_and_unlock (connection, pending, reply);
2366 dbus_message_unref (reply);
2367
2368 CONNECTION_LOCK (connection);
2369 status = _dbus_connection_get_dispatch_status_unlocked (connection);
2370 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2371 dbus_pending_call_unref (pending);
2372
2373 return TRUE;
2374 }
2375
2376 return FALSE;
2377}
2378
2393void
2394_dbus_connection_block_pending_call (DBusPendingCall *pending)
2395{
2396 dbus_int64_t start_tv_sec;
2397 long start_tv_usec;
2398 dbus_int64_t tv_sec;
2399 long tv_usec;
2400 DBusDispatchStatus status;
2401 DBusConnection *connection;
2402 dbus_uint32_t client_serial;
2403 DBusTimeout *timeout;
2404 int timeout_milliseconds, elapsed_milliseconds;
2405
2406 _dbus_assert (pending != NULL);
2407
2408 if (dbus_pending_call_get_completed (pending))
2409 return;
2410
2411 dbus_pending_call_ref (pending); /* necessary because the call could be canceled */
2412
2413 connection = _dbus_pending_call_get_connection_and_lock (pending);
2414
2415 /* Flush message queue - note, can affect dispatch status */
2416 _dbus_connection_flush_unlocked (connection);
2417
2418 client_serial = _dbus_pending_call_get_reply_serial_unlocked (pending);
2419
2420 /* note that timeout_milliseconds is limited to a smallish value
2421 * in _dbus_pending_call_new() so overflows aren't possible
2422 * below
2423 */
2424 timeout = _dbus_pending_call_get_timeout_unlocked (pending);
2425 _dbus_get_monotonic_time (&start_tv_sec, &start_tv_usec);
2426 if (timeout)
2427 {
2428 timeout_milliseconds = dbus_timeout_get_interval (timeout);
2429
2430 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): will block %d milliseconds for reply serial %u from %" DBUS_INT64_MODIFIER "d sec %ld usec\n",
2431 timeout_milliseconds,
2432 client_serial,
2433 start_tv_sec, start_tv_usec);
2434 }
2435 else
2436 {
2437 timeout_milliseconds = -1;
2438
2439 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): will block for reply serial %u\n", client_serial);
2440 }
2441
2442 /* check to see if we already got the data off the socket */
2443 /* from another blocked pending call */
2444 if (check_for_reply_and_update_dispatch_unlocked (connection, pending))
2445 return;
2446
2447 /* Now we wait... */
2448 /* always block at least once as we know we don't have the reply yet */
2449 _dbus_connection_do_iteration_unlocked (connection,
2450 pending,
2451 DBUS_ITERATION_DO_READING |
2452 DBUS_ITERATION_BLOCK,
2453 timeout_milliseconds);
2454
2455 recheck_status:
2456
2457 _dbus_verbose ("top of recheck\n");
2458
2459 HAVE_LOCK_CHECK (connection);
2460
2461 /* queue messages and get status */
2462
2463 status = _dbus_connection_get_dispatch_status_unlocked (connection);
2464
2465 /* the get_completed() is in case a dispatch() while we were blocking
2466 * got the reply instead of us.
2467 */
2468 if (_dbus_pending_call_get_completed_unlocked (pending))
2469 {
2470 _dbus_verbose ("Pending call completed by dispatch\n");
2471 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2472 dbus_pending_call_unref (pending);
2473 return;
2474 }
2475
2476 if (status == DBUS_DISPATCH_DATA_REMAINS)
2477 {
2478 if (check_for_reply_and_update_dispatch_unlocked (connection, pending))
2479 return;
2480 }
2481
2482 _dbus_get_monotonic_time (&tv_sec, &tv_usec);
2483 elapsed_milliseconds = (tv_sec - start_tv_sec) * 1000 +
2484 (tv_usec - start_tv_usec) / 1000;
2485
2486 if (!_dbus_connection_get_is_connected_unlocked (connection))
2487 {
2488 DBusMessage *error_msg;
2489
2490 error_msg = generate_local_error_message (client_serial,
2491 DBUS_ERROR_DISCONNECTED,
2492 "Connection was disconnected before a reply was received");
2493
2494 /* on OOM error_msg is set to NULL */
2495 complete_pending_call_and_unlock (connection, pending, error_msg);
2496 if (error_msg != NULL)
2497 dbus_message_unref (error_msg);
2498 dbus_pending_call_unref (pending);
2499 return;
2500 }
2501 else if (connection->disconnect_message_link == NULL)
2502 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): disconnected\n");
2503 else if (timeout == NULL)
2504 {
2505 if (status == DBUS_DISPATCH_NEED_MEMORY)
2506 {
2507 /* Try sleeping a bit, as we aren't sure we need to block for reading,
2508 * we may already have a reply in the buffer and just can't process
2509 * it.
2510 */
2511 _dbus_verbose ("dbus_connection_send_with_reply_and_block() waiting for more memory\n");
2512
2513 _dbus_memory_pause_based_on_timeout (timeout_milliseconds - elapsed_milliseconds);
2514 }
2515 else
2516 {
2517 /* block again, we don't have the reply buffered yet. */
2518 _dbus_connection_do_iteration_unlocked (connection,
2519 pending,
2520 DBUS_ITERATION_DO_READING |
2521 DBUS_ITERATION_BLOCK,
2522 timeout_milliseconds - elapsed_milliseconds);
2523 }
2524
2525 goto recheck_status;
2526 }
2527 else if (tv_sec < start_tv_sec)
2528 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): clock set backward\n");
2529 else if (elapsed_milliseconds < timeout_milliseconds)
2530 {
2531 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): %d milliseconds remain\n", timeout_milliseconds - elapsed_milliseconds);
2532
2533 if (status == DBUS_DISPATCH_NEED_MEMORY)
2534 {
2535 /* Try sleeping a bit, as we aren't sure we need to block for reading,
2536 * we may already have a reply in the buffer and just can't process
2537 * it.
2538 */
2539 _dbus_verbose ("dbus_connection_send_with_reply_and_block() waiting for more memory\n");
2540
2541 _dbus_memory_pause_based_on_timeout (timeout_milliseconds - elapsed_milliseconds);
2542 }
2543 else
2544 {
2545 /* block again, we don't have the reply buffered yet. */
2546 _dbus_connection_do_iteration_unlocked (connection,
2547 pending,
2548 DBUS_ITERATION_DO_READING |
2549 DBUS_ITERATION_BLOCK,
2550 timeout_milliseconds - elapsed_milliseconds);
2551 }
2552
2553 goto recheck_status;
2554 }
2555
2556 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): Waited %d milliseconds and got no reply\n",
2557 elapsed_milliseconds);
2558
2559 _dbus_assert (!_dbus_pending_call_get_completed_unlocked (pending));
2560
2561 /* unlock and call user code */
2562 complete_pending_call_and_unlock (connection, pending, NULL);
2563
2564 /* update user code on dispatch status */
2565 CONNECTION_LOCK (connection);
2566 status = _dbus_connection_get_dispatch_status_unlocked (connection);
2567 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2568 dbus_pending_call_unref (pending);
2569}
2570
2576int
2577_dbus_connection_get_pending_fds_count (DBusConnection *connection)
2578{
2579 return _dbus_transport_get_pending_fds_count (connection->transport);
2580}
2581
2589void
2590_dbus_connection_set_pending_fds_function (DBusConnection *connection,
2591 DBusPendingFdsChangeFunction callback,
2592 void *data)
2593{
2594 _dbus_transport_set_pending_fds_function (connection->transport,
2595 callback, data);
2596}
2597
2599
2605
2634 DBusConnection*
2635dbus_connection_open (const char *address,
2636 DBusError *error)
2637{
2638 DBusConnection *connection;
2639
2640 _dbus_return_val_if_fail (address != NULL, NULL);
2641 _dbus_return_val_if_error_is_set (error, NULL);
2642
2643 connection = _dbus_connection_open_internal (address,
2644 TRUE,
2645 error);
2646
2647 return connection;
2648}
2649
2677 DBusConnection*
2678dbus_connection_open_private (const char *address,
2679 DBusError *error)
2680{
2681 DBusConnection *connection;
2682
2683 _dbus_return_val_if_fail (address != NULL, NULL);
2684 _dbus_return_val_if_error_is_set (error, NULL);
2685
2686 connection = _dbus_connection_open_internal (address,
2687 FALSE,
2688 error);
2689
2690 return connection;
2691}
2692
2699 DBusConnection *
2700dbus_connection_ref (DBusConnection *connection)
2701{
2702 dbus_int32_t old_refcount;
2703
2704 _dbus_return_val_if_fail (connection != NULL, NULL);
2705 _dbus_return_val_if_fail (connection->generation == _dbus_current_generation, NULL);
2706 old_refcount = _dbus_atomic_inc (&connection->refcount);
2707 _dbus_connection_trace_ref (connection, old_refcount, old_refcount + 1,
2708 "ref");
2709
2710 return connection;
2711}
2712
2713static void
2714free_outgoing_message (void *element,
2715 void *data)
2716{
2717 DBusMessage *message = element;
2718 DBusConnection *connection = data;
2719
2720 _dbus_message_remove_counter (message, connection->outgoing_counter);
2721 dbus_message_unref (message);
2722}
2723
2724/* This is run without the mutex held, but after the last reference
2725 * to the connection has been dropped we should have no thread-related
2726 * problems
2727 */
2728static void
2729_dbus_connection_last_unref (DBusConnection *connection)
2730{
2731 DBusList *link;
2732
2733 _dbus_verbose ("Finalizing connection %p\n", connection);
2734
2735 _dbus_assert (_dbus_atomic_get (&connection->refcount) == 0);
2736
2737 /* You have to disconnect the connection before unref:ing it. Otherwise
2738 * you won't get the disconnected message.
2739 */
2740 _dbus_assert (!_dbus_transport_get_is_connected (connection->transport));
2741 _dbus_assert (connection->server_guid == NULL);
2742
2743 /* ---- We're going to call various application callbacks here, hope it doesn't break anything... */
2744 _dbus_object_tree_free_all_unlocked (connection->objects);
2745
2746 dbus_connection_set_dispatch_status_function (connection, NULL, NULL, NULL);
2747 dbus_connection_set_wakeup_main_function (connection, NULL, NULL, NULL);
2748 dbus_connection_set_unix_user_function (connection, NULL, NULL, NULL);
2749 dbus_connection_set_windows_user_function (connection, NULL, NULL, NULL);
2750
2751 _dbus_watch_list_free (connection->watches);
2752 connection->watches = NULL;
2753
2754 _dbus_timeout_list_free (connection->timeouts);
2755 connection->timeouts = NULL;
2756
2757 _dbus_data_slot_list_free (&connection->slot_list);
2758
2759 link = _dbus_list_get_first_link (&connection->filter_list);
2760 while (link != NULL)
2761 {
2762 DBusMessageFilter *filter = link->data;
2763 DBusList *next = _dbus_list_get_next_link (&connection->filter_list, link);
2764
2765 filter->function = NULL;
2766 _dbus_message_filter_unref (filter); /* calls app callback */
2767 link->data = NULL;
2768
2769 link = next;
2770 }
2771 _dbus_list_clear (&connection->filter_list);
2772
2773 /* ---- Done with stuff that invokes application callbacks */
2774
2775 _dbus_object_tree_unref (connection->objects);
2776
2777 _dbus_hash_table_unref (connection->pending_replies);
2778 connection->pending_replies = NULL;
2779
2780 _dbus_list_foreach (&connection->outgoing_messages,
2781 free_outgoing_message,
2782 connection);
2783 _dbus_list_clear (&connection->outgoing_messages);
2784
2785 _dbus_list_clear_full (&connection->incoming_messages,
2786 (DBusFreeFunction) dbus_message_unref);
2787
2788 _dbus_counter_unref (connection->outgoing_counter);
2789
2790 _dbus_transport_unref (connection->transport);
2791
2792 if (connection->disconnect_message_link)
2793 {
2794 DBusMessage *message = connection->disconnect_message_link->data;
2795 dbus_message_unref (message);
2796 _dbus_list_free_link (connection->disconnect_message_link);
2797 }
2798
2799 _dbus_condvar_free_at_location (&connection->dispatch_cond);
2800 _dbus_condvar_free_at_location (&connection->io_path_cond);
2801
2802 _dbus_cmutex_free_at_location (&connection->io_path_mutex);
2803 _dbus_cmutex_free_at_location (&connection->dispatch_mutex);
2804
2805 _dbus_rmutex_free_at_location (&connection->slot_mutex);
2806
2807 _dbus_rmutex_free_at_location (&connection->mutex);
2808
2809 dbus_free (connection);
2810}
2811
2831void
2832dbus_connection_unref (DBusConnection *connection)
2833{
2834 dbus_int32_t old_refcount;
2835
2836 _dbus_return_if_fail (connection != NULL);
2837 _dbus_return_if_fail (connection->generation == _dbus_current_generation);
2838
2839 old_refcount = _dbus_atomic_dec (&connection->refcount);
2840
2841 _dbus_connection_trace_ref (connection, old_refcount, old_refcount - 1,
2842 "unref");
2843
2844 if (old_refcount == 1)
2845 {
2846#ifndef DBUS_DISABLE_CHECKS
2847 if (_dbus_transport_get_is_connected (connection->transport))
2848 {
2849 _dbus_warn_check_failed ("The last reference on a connection was dropped without closing the connection. This is a bug in an application. See dbus_connection_unref() documentation for details.\n%s",
2850 connection->shareable ?
2851 "Most likely, the application called unref() too many times and removed a reference belonging to libdbus, since this is a shared connection." :
2852 "Most likely, the application was supposed to call dbus_connection_close(), since this is a private connection.");
2853 return;
2854 }
2855#endif
2856 _dbus_connection_last_unref (connection);
2857 }
2858}
2859
2860/*
2861 * Note that the transport can disconnect itself (other end drops us)
2862 * and in that case this function never runs. So this function must
2863 * not do anything more than disconnect the transport and update the
2864 * dispatch status.
2865 *
2866 * If the transport self-disconnects, then we assume someone will
2867 * dispatch the connection to cause the dispatch status update.
2868 */
2869static void
2870_dbus_connection_close_possibly_shared_and_unlock (DBusConnection *connection)
2871{
2872 DBusDispatchStatus status;
2873
2874 HAVE_LOCK_CHECK (connection);
2875
2876 _dbus_verbose ("Disconnecting %p\n", connection);
2877
2878 /* We need to ref because update_dispatch_status_and_unlock will unref
2879 * the connection if it was shared and libdbus was the only remaining
2880 * refcount holder.
2881 */
2882 _dbus_connection_ref_unlocked (connection);
2883
2884 _dbus_transport_disconnect (connection->transport);
2885
2886 /* This has the side effect of queuing the disconnect message link
2887 * (unless we don't have enough memory, possibly, so don't assert it).
2888 * After the disconnect message link is queued, dbus_bus_get/dbus_connection_open
2889 * should never again return the newly-disconnected connection.
2890 *
2891 * However, we only unref the shared connection and exit_on_disconnect when
2892 * the disconnect message reaches the head of the message queue,
2893 * NOT when it's first queued.
2894 */
2895 status = _dbus_connection_get_dispatch_status_unlocked (connection);
2896
2897 /* This calls out to user code */
2898 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2899
2900 /* Could also call out to user code */
2901 dbus_connection_unref (connection);
2902}
2903
2946void
2947dbus_connection_close (DBusConnection *connection)
2948{
2949 _dbus_return_if_fail (connection != NULL);
2950 _dbus_return_if_fail (connection->generation == _dbus_current_generation);
2951
2952 CONNECTION_LOCK (connection);
2953
2954#ifndef DBUS_DISABLE_CHECKS
2955 if (connection->shareable)
2956 {
2957 CONNECTION_UNLOCK (connection);
2958
2959 _dbus_warn_check_failed ("Applications must not close shared connections - see dbus_connection_close() docs. This is a bug in the application.");
2960 return;
2961 }
2962#endif
2963
2964 _dbus_connection_close_possibly_shared_and_unlock (connection);
2965}
2966
2967static dbus_bool_t
2968_dbus_connection_get_is_connected_unlocked (DBusConnection *connection)
2969{
2970 HAVE_LOCK_CHECK (connection);
2971 return _dbus_transport_get_is_connected (connection->transport);
2972}
2973
2987 dbus_bool_t
2988dbus_connection_get_is_connected (DBusConnection *connection)
2989{
2990 dbus_bool_t res;
2991
2992 _dbus_return_val_if_fail (connection != NULL, FALSE);
2993
2994 CONNECTION_LOCK (connection);
2995 res = _dbus_connection_get_is_connected_unlocked (connection);
2996 CONNECTION_UNLOCK (connection);
2997
2998 return res;
2999}
3000
3009 dbus_bool_t
3010dbus_connection_get_is_authenticated (DBusConnection *connection)
3011{
3012 dbus_bool_t res;
3013
3014 _dbus_return_val_if_fail (connection != NULL, FALSE);
3015
3016 CONNECTION_LOCK (connection);
3017 res = _dbus_transport_try_to_authenticate (connection->transport);
3018 CONNECTION_UNLOCK (connection);
3019
3020 return res;
3021}
3022
3043 dbus_bool_t
3044dbus_connection_get_is_anonymous (DBusConnection *connection)
3045{
3046 dbus_bool_t res;
3047
3048 _dbus_return_val_if_fail (connection != NULL, FALSE);
3049
3050 CONNECTION_LOCK (connection);
3051 res = _dbus_transport_get_is_anonymous (connection->transport);
3052 CONNECTION_UNLOCK (connection);
3053
3054 return res;
3055}
3056
3088char*
3089dbus_connection_get_server_id (DBusConnection *connection)
3090{
3091 char *id;
3092
3093 _dbus_return_val_if_fail (connection != NULL, NULL);
3094
3095 CONNECTION_LOCK (connection);
3096 id = _dbus_strdup (_dbus_transport_get_server_id (connection->transport));
3097 CONNECTION_UNLOCK (connection);
3098
3099 return id;
3100}
3101
3119 dbus_bool_t
3120dbus_connection_can_send_type(DBusConnection *connection,
3121 int type)
3122{
3123 _dbus_return_val_if_fail (connection != NULL, FALSE);
3124
3125 if (!dbus_type_is_valid (type))
3126 return FALSE;
3127
3128 if (type != DBUS_TYPE_UNIX_FD)
3129 return TRUE;
3130
3131#ifdef HAVE_UNIX_FD_PASSING
3132 {
3133 dbus_bool_t b;
3134
3135 CONNECTION_LOCK(connection);
3136 b = _dbus_transport_can_pass_unix_fd(connection->transport);
3137 CONNECTION_UNLOCK(connection);
3138
3139 return b;
3140 }
3141#endif
3142
3143 return FALSE;
3144}
3145
3159void
3160dbus_connection_set_exit_on_disconnect (DBusConnection *connection,
3161 dbus_bool_t exit_on_disconnect)
3162{
3163 _dbus_return_if_fail (connection != NULL);
3164
3165 CONNECTION_LOCK (connection);
3166 connection->exit_on_disconnect = exit_on_disconnect != FALSE;
3167 CONNECTION_UNLOCK (connection);
3168}
3169
3179 DBusPreallocatedSend*
3180dbus_connection_preallocate_send (DBusConnection *connection)
3181{
3182 DBusPreallocatedSend *preallocated;
3183
3184 _dbus_return_val_if_fail (connection != NULL, NULL);
3185
3186 CONNECTION_LOCK (connection);
3187
3188 preallocated =
3189 _dbus_connection_preallocate_send_unlocked (connection);
3190
3191 CONNECTION_UNLOCK (connection);
3192
3193 return preallocated;
3194}
3195
3205void
3206dbus_connection_free_preallocated_send (DBusConnection *connection,
3207 DBusPreallocatedSend *preallocated)
3208{
3209 _dbus_return_if_fail (connection != NULL);
3210 _dbus_return_if_fail (preallocated != NULL);
3211 _dbus_return_if_fail (connection == preallocated->connection);
3212
3213 _dbus_list_free_link (preallocated->queue_link);
3214 _dbus_counter_unref (preallocated->counter_link->data);
3215 _dbus_list_free_link (preallocated->counter_link);
3216 dbus_free (preallocated);
3217}
3218
3231void
3232dbus_connection_send_preallocated (DBusConnection *connection,
3233 DBusPreallocatedSend *preallocated,
3234 DBusMessage *message,
3235 dbus_uint32_t *client_serial)
3236{
3237 _dbus_return_if_fail (connection != NULL);
3238 _dbus_return_if_fail (preallocated != NULL);
3239 _dbus_return_if_fail (message != NULL);
3240 _dbus_return_if_fail (preallocated->connection == connection);
3241 _dbus_return_if_fail (dbus_message_get_type (message) != DBUS_MESSAGE_TYPE_METHOD_CALL ||
3242 dbus_message_get_member (message) != NULL);
3243 _dbus_return_if_fail (dbus_message_get_type (message) != DBUS_MESSAGE_TYPE_SIGNAL ||
3244 (dbus_message_get_interface (message) != NULL &&
3245 dbus_message_get_member (message) != NULL));
3246
3247 CONNECTION_LOCK (connection);
3248
3249#ifdef HAVE_UNIX_FD_PASSING
3250
3251 if (!_dbus_transport_can_pass_unix_fd(connection->transport) &&
3252 message->n_unix_fds > 0)
3253 {
3254 /* Refuse to send fds on a connection that cannot handle
3255 them. Unfortunately we cannot return a proper error here, so
3256 the best we can is just return. */
3257 CONNECTION_UNLOCK (connection);
3258 return;
3259 }
3260
3261#endif
3262
3263 _dbus_connection_send_preallocated_and_unlock (connection,
3264 preallocated,
3265 message, client_serial);
3266}
3267
3268static dbus_bool_t
3269_dbus_connection_send_unlocked_no_update (DBusConnection *connection,
3270 DBusMessage *message,
3271 dbus_uint32_t *client_serial)
3272{
3273 DBusPreallocatedSend *preallocated;
3274
3275 _dbus_assert (connection != NULL);
3276 _dbus_assert (message != NULL);
3277
3278 preallocated = _dbus_connection_preallocate_send_unlocked (connection);
3279 if (preallocated == NULL)
3280 return FALSE;
3281
3282 _dbus_connection_send_preallocated_unlocked_no_update (connection,
3283 preallocated,
3284 message,
3285 client_serial);
3286 return TRUE;
3287}
3288
3316 dbus_bool_t
3317dbus_connection_send (DBusConnection *connection,
3318 DBusMessage *message,
3319 dbus_uint32_t *serial)
3320{
3321 _dbus_return_val_if_fail (connection != NULL, FALSE);
3322 _dbus_return_val_if_fail (message != NULL, FALSE);
3323
3324 CONNECTION_LOCK (connection);
3325
3326#ifdef HAVE_UNIX_FD_PASSING
3327
3328 if (!_dbus_transport_can_pass_unix_fd(connection->transport) &&
3329 message->n_unix_fds > 0)
3330 {
3331 /* Refuse to send fds on a connection that cannot handle
3332 them. Unfortunately we cannot return a proper error here, so
3333 the best we can is just return. */
3334 CONNECTION_UNLOCK (connection);
3335 return FALSE;
3336 }
3337
3338#endif
3339
3340 return _dbus_connection_send_and_unlock (connection,
3341 message,
3342 serial);
3343}
3344
3345static dbus_bool_t
3346reply_handler_timeout (void *data)
3347{
3348 DBusConnection *connection;
3349 DBusDispatchStatus status;
3350 DBusPendingCall *pending = data;
3351
3352 connection = _dbus_pending_call_get_connection_and_lock (pending);
3353 _dbus_connection_ref_unlocked (connection);
3354
3355 _dbus_pending_call_queue_timeout_error_unlocked (pending,
3356 connection);
3357 _dbus_connection_remove_timeout_unlocked (connection,
3358 _dbus_pending_call_get_timeout_unlocked (pending));
3359 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
3360
3361 _dbus_verbose ("middle\n");
3362 status = _dbus_connection_get_dispatch_status_unlocked (connection);
3363
3364 /* Unlocks, and calls out to user code */
3365 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3366 dbus_connection_unref (connection);
3367
3368 return TRUE;
3369}
3370
3414 dbus_bool_t
3415dbus_connection_send_with_reply (DBusConnection *connection,
3416 DBusMessage *message,
3417 DBusPendingCall **pending_return,
3418 int timeout_milliseconds)
3419{
3420 DBusPendingCall *pending;
3421 dbus_int32_t serial = -1;
3422 DBusDispatchStatus status;
3423
3424 _dbus_return_val_if_fail (connection != NULL, FALSE);
3425 _dbus_return_val_if_fail (message != NULL, FALSE);
3426 _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, FALSE);
3427
3428 if (pending_return)
3429 *pending_return = NULL;
3430
3431 CONNECTION_LOCK (connection);
3432
3433#ifdef HAVE_UNIX_FD_PASSING
3434
3435 if (!_dbus_transport_can_pass_unix_fd(connection->transport) &&
3436 message->n_unix_fds > 0)
3437 {
3438 /* Refuse to send fds on a connection that cannot handle
3439 them. Unfortunately we cannot return a proper error here, so
3440 the best we can do is return TRUE but leave *pending_return
3441 as NULL. */
3442 CONNECTION_UNLOCK (connection);
3443 return TRUE;
3444 }
3445
3446#endif
3447
3448 if (!_dbus_connection_get_is_connected_unlocked (connection))
3449 {
3450 CONNECTION_UNLOCK (connection);
3451
3452 return TRUE;
3453 }
3454
3455 pending = _dbus_pending_call_new_unlocked (connection,
3456 timeout_milliseconds,
3457 reply_handler_timeout);
3458
3459 if (pending == NULL)
3460 {
3461 CONNECTION_UNLOCK (connection);
3462 return FALSE;
3463 }
3464
3465 /* Assign a serial to the message */
3466 serial = dbus_message_get_serial (message);
3467 if (serial == 0)
3468 {
3469 serial = _dbus_connection_get_next_client_serial (connection);
3470 dbus_message_set_serial (message, serial);
3471 }
3472
3473 if (!_dbus_pending_call_set_timeout_error_unlocked (pending, message, serial))
3474 goto error;
3475
3476 /* Insert the serial in the pending replies hash;
3477 * hash takes a refcount on DBusPendingCall.
3478 * Also, add the timeout.
3479 */
3480 if (!_dbus_connection_attach_pending_call_unlocked (connection,
3481 pending))
3482 goto error;
3483
3484 if (!_dbus_connection_send_unlocked_no_update (connection, message, NULL))
3485 {
3486 _dbus_connection_detach_pending_call_and_unlock (connection,
3487 pending);
3488 goto error_unlocked;
3489 }
3490
3491 if (pending_return)
3492 *pending_return = pending; /* hand off refcount */
3493 else
3494 {
3495 _dbus_connection_detach_pending_call_unlocked (connection, pending);
3496 /* we still have a ref to the pending call in this case, we unref
3497 * after unlocking, below
3498 */
3499 }
3500
3501 status = _dbus_connection_get_dispatch_status_unlocked (connection);
3502
3503 /* this calls out to user code */
3504 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3505
3506 if (pending_return == NULL)
3507 dbus_pending_call_unref (pending);
3508
3509 return TRUE;
3510
3511 error:
3512 CONNECTION_UNLOCK (connection);
3513 error_unlocked:
3514 dbus_pending_call_unref (pending);
3515 return FALSE;
3516}
3517
3550 DBusMessage*
3551dbus_connection_send_with_reply_and_block (DBusConnection *connection,
3552 DBusMessage *message,
3553 int timeout_milliseconds,
3554 DBusError *error)
3555{
3556 DBusMessage *reply;
3557 DBusPendingCall *pending;
3558
3559 _dbus_return_val_if_fail (connection != NULL, NULL);
3560 _dbus_return_val_if_fail (message != NULL, NULL);
3561 _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, NULL);
3562 _dbus_return_val_if_error_is_set (error, NULL);
3563
3564#ifdef HAVE_UNIX_FD_PASSING
3565
3566 CONNECTION_LOCK (connection);
3567 if (!_dbus_transport_can_pass_unix_fd(connection->transport) &&
3568 message->n_unix_fds > 0)
3569 {
3570 CONNECTION_UNLOCK (connection);
3571 dbus_set_error(error, DBUS_ERROR_FAILED, "Cannot send file descriptors on this connection.");
3572 return NULL;
3573 }
3574 CONNECTION_UNLOCK (connection);
3575
3576#endif
3577
3578 if (!dbus_connection_send_with_reply (connection, message,
3579 &pending, timeout_milliseconds))
3580 {
3581 _DBUS_SET_OOM (error);
3582 return NULL;
3583 }
3584
3585 if (pending == NULL)
3586 {
3587 dbus_set_error (error, DBUS_ERROR_DISCONNECTED, "Connection is closed");
3588 return NULL;
3589 }
3590
3591 dbus_pending_call_block (pending);
3592
3593 reply = dbus_pending_call_steal_reply (pending);
3594 dbus_pending_call_unref (pending);
3595
3596 /* call_complete_and_unlock() called from pending_call_block() should
3597 * always fill this in.
3598 */
3599 _dbus_assert (reply != NULL);
3600
3601 if (dbus_set_error_from_message (error, reply))
3602 {
3603 dbus_message_unref (reply);
3604 return NULL;
3605 }
3606 else
3607 return reply;
3608}
3609
3618static DBusDispatchStatus
3619_dbus_connection_flush_unlocked (DBusConnection *connection)
3620{
3621 /* We have to specify DBUS_ITERATION_DO_READING here because
3622 * otherwise we could have two apps deadlock if they are both doing
3623 * a flush(), and the kernel buffers fill up. This could change the
3624 * dispatch status.
3625 */
3626 DBusDispatchStatus status;
3627
3628 HAVE_LOCK_CHECK (connection);
3629
3630 while (connection->n_outgoing > 0 &&
3631 _dbus_connection_get_is_connected_unlocked (connection))
3632 {
3633 _dbus_verbose ("doing iteration in\n");
3634 HAVE_LOCK_CHECK (connection);
3635 _dbus_connection_do_iteration_unlocked (connection,
3636 NULL,
3637 DBUS_ITERATION_DO_READING |
3638 DBUS_ITERATION_DO_WRITING |
3639 DBUS_ITERATION_BLOCK,
3640 -1);
3641 }
3642
3643 HAVE_LOCK_CHECK (connection);
3644 _dbus_verbose ("middle\n");
3645 status = _dbus_connection_get_dispatch_status_unlocked (connection);
3646
3647 HAVE_LOCK_CHECK (connection);
3648 return status;
3649}
3650
3656void
3657dbus_connection_flush (DBusConnection *connection)
3658{
3659 /* We have to specify DBUS_ITERATION_DO_READING here because
3660 * otherwise we could have two apps deadlock if they are both doing
3661 * a flush(), and the kernel buffers fill up. This could change the
3662 * dispatch status.
3663 */
3664 DBusDispatchStatus status;
3665
3666 _dbus_return_if_fail (connection != NULL);
3667
3668 CONNECTION_LOCK (connection);
3669
3670 status = _dbus_connection_flush_unlocked (connection);
3671
3672 HAVE_LOCK_CHECK (connection);
3673 /* Unlocks and calls out to user code */
3674 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3675
3676 _dbus_verbose ("end\n");
3677}
3678
3689static dbus_bool_t
3690_dbus_connection_read_write_dispatch (DBusConnection *connection,
3691 int timeout_milliseconds,
3692 dbus_bool_t dispatch)
3693{
3694 DBusDispatchStatus dstatus;
3695 dbus_bool_t progress_possible;
3696
3697 /* Need to grab a ref here in case we're a private connection and
3698 * the user drops the last ref in a handler we call; see bug
3699 * https://bugs.freedesktop.org/show_bug.cgi?id=15635
3700 */
3701 dbus_connection_ref (connection);
3702 dstatus = dbus_connection_get_dispatch_status (connection);
3703
3704 if (dispatch && dstatus == DBUS_DISPATCH_DATA_REMAINS)
3705 {
3706 _dbus_verbose ("doing dispatch\n");
3707 dbus_connection_dispatch (connection);
3708 CONNECTION_LOCK (connection);
3709 }
3710 else if (dstatus == DBUS_DISPATCH_NEED_MEMORY)
3711 {
3712 _dbus_verbose ("pausing for memory\n");
3713 _dbus_memory_pause_based_on_timeout (timeout_milliseconds);
3714 CONNECTION_LOCK (connection);
3715 }
3716 else
3717 {
3718 CONNECTION_LOCK (connection);
3719 if (_dbus_connection_get_is_connected_unlocked (connection))
3720 {
3721 _dbus_verbose ("doing iteration\n");
3722 _dbus_connection_do_iteration_unlocked (connection,
3723 NULL,
3724 DBUS_ITERATION_DO_READING |
3725 DBUS_ITERATION_DO_WRITING |
3726 DBUS_ITERATION_BLOCK,
3727 timeout_milliseconds);
3728 }
3729 }
3730
3731 HAVE_LOCK_CHECK (connection);
3732 /* If we can dispatch, we can make progress until the Disconnected message
3733 * has been processed; if we can only read/write, we can make progress
3734 * as long as the transport is open.
3735 */
3736 if (dispatch)
3737 progress_possible = connection->n_incoming != 0 ||
3738 connection->disconnect_message_link != NULL;
3739 else
3740 progress_possible = _dbus_connection_get_is_connected_unlocked (connection);
3741
3742 CONNECTION_UNLOCK (connection);
3743
3744 dbus_connection_unref (connection);
3745
3746 return progress_possible; /* TRUE if we can make more progress */
3747}
3748
3749
3784 dbus_bool_t
3785dbus_connection_read_write_dispatch (DBusConnection *connection,
3786 int timeout_milliseconds)
3787{
3788 _dbus_return_val_if_fail (connection != NULL, FALSE);
3789 _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, FALSE);
3790 return _dbus_connection_read_write_dispatch(connection, timeout_milliseconds, TRUE);
3791}
3792
3816 dbus_bool_t
3817dbus_connection_read_write (DBusConnection *connection,
3818 int timeout_milliseconds)
3819{
3820 _dbus_return_val_if_fail (connection != NULL, FALSE);
3821 _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, FALSE);
3822 return _dbus_connection_read_write_dispatch(connection, timeout_milliseconds, FALSE);
3823}
3824
3825/* We need to call this anytime we pop the head of the queue, and then
3826 * update_dispatch_status_and_unlock needs to be called afterward
3827 * which will "process" the disconnected message and set
3828 * disconnected_message_processed.
3829 */
3830static void
3831check_disconnected_message_arrived_unlocked (DBusConnection *connection,
3832 DBusMessage *head_of_queue)
3833{
3834 HAVE_LOCK_CHECK (connection);
3835
3836 /* checking that the link is NULL is an optimization to avoid the is_signal call */
3837 if (connection->disconnect_message_link == NULL &&
3838 dbus_message_is_signal (head_of_queue,
3839 DBUS_INTERFACE_LOCAL,
3840 "Disconnected"))
3841 {
3842 connection->disconnected_message_arrived = TRUE;
3843 }
3844}
3845
3865 DBusMessage*
3866dbus_connection_borrow_message (DBusConnection *connection)
3867{
3868 DBusDispatchStatus status;
3869 DBusMessage *message;
3870
3871 _dbus_return_val_if_fail (connection != NULL, NULL);
3872
3873 _dbus_verbose ("start\n");
3874
3875 /* this is called for the side effect that it queues
3876 * up any messages from the transport
3877 */
3878 status = dbus_connection_get_dispatch_status (connection);
3879 if (status != DBUS_DISPATCH_DATA_REMAINS)
3880 return NULL;
3881
3882 CONNECTION_LOCK (connection);
3883
3884 _dbus_connection_acquire_dispatch (connection);
3885
3886 /* While a message is outstanding, the dispatch lock is held */
3887 _dbus_assert (connection->message_borrowed == NULL);
3888
3889 connection->message_borrowed = _dbus_list_get_first (&connection->incoming_messages);
3890
3891 message = connection->message_borrowed;
3892
3893 check_disconnected_message_arrived_unlocked (connection, message);
3894
3895 /* Note that we KEEP the dispatch lock until the message is returned */
3896 if (message == NULL)
3897 _dbus_connection_release_dispatch (connection);
3898
3899 CONNECTION_UNLOCK (connection);
3900
3901 _dbus_message_trace_ref (message, -1, -1, "dbus_connection_borrow_message");
3902
3903 /* We don't update dispatch status until it's returned or stolen */
3904
3905 return message;
3906}
3907
3916void
3917dbus_connection_return_message (DBusConnection *connection,
3918 DBusMessage *message)
3919{
3920 DBusDispatchStatus status;
3921
3922 _dbus_return_if_fail (connection != NULL);
3923 _dbus_return_if_fail (message != NULL);
3924 _dbus_return_if_fail (message == connection->message_borrowed);
3925 _dbus_return_if_fail (connection->dispatch_acquired);
3926
3927 CONNECTION_LOCK (connection);
3928
3929 _dbus_assert (message == connection->message_borrowed);
3930
3931 connection->message_borrowed = NULL;
3932
3933 _dbus_connection_release_dispatch (connection);
3934
3935 status = _dbus_connection_get_dispatch_status_unlocked (connection);
3936 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3937
3938 _dbus_message_trace_ref (message, -1, -1, "dbus_connection_return_message");
3939}
3940
3950void
3951dbus_connection_steal_borrowed_message (DBusConnection *connection,
3952 DBusMessage *message)
3953{
3954 DBusMessage *pop_message;
3955 DBusDispatchStatus status;
3956
3957 _dbus_return_if_fail (connection != NULL);
3958 _dbus_return_if_fail (message != NULL);
3959 _dbus_return_if_fail (message == connection->message_borrowed);
3960 _dbus_return_if_fail (connection->dispatch_acquired);
3961
3962 CONNECTION_LOCK (connection);
3963
3964 _dbus_assert (message == connection->message_borrowed);
3965
3966 pop_message = _dbus_list_pop_first (&connection->incoming_messages);
3967 _dbus_assert (message == pop_message);
3968 (void) pop_message; /* unused unless asserting */
3969
3970 connection->n_incoming -= 1;
3971
3972 _dbus_verbose ("Incoming message %p stolen from queue, %d incoming\n",
3973 message, connection->n_incoming);
3974
3975 connection->message_borrowed = NULL;
3976
3977 _dbus_connection_release_dispatch (connection);
3978
3979 status = _dbus_connection_get_dispatch_status_unlocked (connection);
3980 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3981 _dbus_message_trace_ref (message, -1, -1,
3982 "dbus_connection_steal_borrowed_message");
3983}
3984
3985/* See dbus_connection_pop_message, but requires the caller to own
3986 * the lock before calling. May drop the lock while running.
3987 */
3988static DBusList*
3989_dbus_connection_pop_message_link_unlocked (DBusConnection *connection)
3990{
3991 HAVE_LOCK_CHECK (connection);
3992
3993 _dbus_assert (connection->message_borrowed == NULL);
3994
3995 if (connection->n_incoming > 0)
3996 {
3997 DBusList *link;
3998
3999 link = _dbus_list_pop_first_link (&connection->incoming_messages);
4000 connection->n_incoming -= 1;
4001
4002 _dbus_verbose ("Message %p (%s %s %s %s sig:'%s' serial:%u) removed from incoming queue %p, %d incoming\n",
4003 link->data,
4004 dbus_message_type_to_string (dbus_message_get_type (link->data)),
4005 dbus_message_get_path (link->data) ?
4006 dbus_message_get_path (link->data) :
4007 "no path",
4008 dbus_message_get_interface (link->data) ?
4009 dbus_message_get_interface (link->data) :
4010 "no interface",
4011 dbus_message_get_member (link->data) ?
4012 dbus_message_get_member (link->data) :
4013 "no member",
4014 dbus_message_get_signature (link->data),
4015 dbus_message_get_serial (link->data),
4016 connection, connection->n_incoming);
4017
4018 _dbus_message_trace_ref (link->data, -1, -1,
4019 "_dbus_connection_pop_message_link_unlocked");
4020
4021 check_disconnected_message_arrived_unlocked (connection, link->data);
4022
4023 return link;
4024 }
4025 else
4026 return NULL;
4027}
4028
4029/* See dbus_connection_pop_message, but requires the caller to own
4030 * the lock before calling. May drop the lock while running.
4031 */
4032static DBusMessage*
4033_dbus_connection_pop_message_unlocked (DBusConnection *connection)
4034{
4035 DBusList *link;
4036
4037 HAVE_LOCK_CHECK (connection);
4038
4039 link = _dbus_connection_pop_message_link_unlocked (connection);
4040
4041 if (link != NULL)
4042 {
4043 DBusMessage *message;
4044
4045 message = link->data;
4046
4047 _dbus_list_free_link (link);
4048
4049 return message;
4050 }
4051 else
4052 return NULL;
4053}
4054
4055static void
4056_dbus_connection_putback_message_link_unlocked (DBusConnection *connection,
4057 DBusList *message_link)
4058{
4059 HAVE_LOCK_CHECK (connection);
4060
4061 _dbus_assert (message_link != NULL);
4062 /* You can't borrow a message while a link is outstanding */
4063 _dbus_assert (connection->message_borrowed == NULL);
4064 /* We had to have the dispatch lock across the pop/putback */
4065 _dbus_assert (connection->dispatch_acquired);
4066
4067 _dbus_list_prepend_link (&connection->incoming_messages,
4068 message_link);
4069 connection->n_incoming += 1;
4070
4071 _dbus_verbose ("Message %p (%s %s %s '%s') put back into queue %p, %d incoming\n",
4072 message_link->data,
4073 dbus_message_type_to_string (dbus_message_get_type (message_link->data)),
4074 dbus_message_get_interface (message_link->data) ?
4075 dbus_message_get_interface (message_link->data) :
4076 "no interface",
4077 dbus_message_get_member (message_link->data) ?
4078 dbus_message_get_member (message_link->data) :
4079 "no member",
4080 dbus_message_get_signature (message_link->data),
4081 connection, connection->n_incoming);
4082
4083 _dbus_message_trace_ref (message_link->data, -1, -1,
4084 "_dbus_connection_putback_message_link_unlocked");
4085}
4086
4106 DBusMessage*
4107dbus_connection_pop_message (DBusConnection *connection)
4108{
4109 DBusMessage *message;
4110 DBusDispatchStatus status;
4111
4112 _dbus_verbose ("start\n");
4113
4114 /* this is called for the side effect that it queues
4115 * up any messages from the transport
4116 */
4117 status = dbus_connection_get_dispatch_status (connection);
4118 if (status != DBUS_DISPATCH_DATA_REMAINS)
4119 return NULL;
4120
4121 CONNECTION_LOCK (connection);
4122 _dbus_connection_acquire_dispatch (connection);
4123 HAVE_LOCK_CHECK (connection);
4124
4125 message = _dbus_connection_pop_message_unlocked (connection);
4126
4127 _dbus_verbose ("Returning popped message %p\n", message);
4128
4129 _dbus_connection_release_dispatch (connection);
4130
4131 status = _dbus_connection_get_dispatch_status_unlocked (connection);
4132 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
4133
4134 return message;
4135}
4136
4144static void
4145_dbus_connection_acquire_dispatch (DBusConnection *connection)
4146{
4147 HAVE_LOCK_CHECK (connection);
4148
4149 _dbus_connection_ref_unlocked (connection);
4150 CONNECTION_UNLOCK (connection);
4151
4152 _dbus_verbose ("locking dispatch_mutex\n");
4153 _dbus_cmutex_lock (connection->dispatch_mutex);
4154
4155 while (connection->dispatch_acquired)
4156 {
4157 _dbus_verbose ("waiting for dispatch to be acquirable\n");
4158 _dbus_condvar_wait (connection->dispatch_cond,
4159 connection->dispatch_mutex);
4160 }
4161
4162 _dbus_assert (!connection->dispatch_acquired);
4163
4164 connection->dispatch_acquired = TRUE;
4165
4166 _dbus_verbose ("unlocking dispatch_mutex\n");
4167 _dbus_cmutex_unlock (connection->dispatch_mutex);
4168
4169 CONNECTION_LOCK (connection);
4170 _dbus_connection_unref_unlocked (connection);
4171}
4172
4180static void
4181_dbus_connection_release_dispatch (DBusConnection *connection)
4182{
4183 HAVE_LOCK_CHECK (connection);
4184
4185 _dbus_verbose ("locking dispatch_mutex\n");
4186 _dbus_cmutex_lock (connection->dispatch_mutex);
4187
4188 _dbus_assert (connection->dispatch_acquired);
4189
4190 connection->dispatch_acquired = FALSE;
4191 _dbus_condvar_wake_one (connection->dispatch_cond);
4192
4193 _dbus_verbose ("unlocking dispatch_mutex\n");
4194 _dbus_cmutex_unlock (connection->dispatch_mutex);
4195}
4196
4197static void
4198_dbus_connection_failed_pop (DBusConnection *connection,
4199 DBusList *message_link)
4200{
4201 _dbus_list_prepend_link (&connection->incoming_messages,
4202 message_link);
4203 connection->n_incoming += 1;
4204}
4205
4206/* Note this may be called multiple times since we don't track whether we already did it */
4207static void
4208notify_disconnected_unlocked (DBusConnection *connection)
4209{
4210 HAVE_LOCK_CHECK (connection);
4211
4212 /* Set the weakref in dbus-bus.c to NULL, so nobody will get a disconnected
4213 * connection from dbus_bus_get(). We make the same guarantee for
4214 * dbus_connection_open() but in a different way since we don't want to
4215 * unref right here; we instead check for connectedness before returning
4216 * the connection from the hash.
4217 */
4218 _dbus_bus_notify_shared_connection_disconnected_unlocked (connection);
4219
4220 /* Dump the outgoing queue, we aren't going to be able to
4221 * send it now, and we'd like accessors like
4222 * dbus_connection_get_outgoing_size() to be accurate.
4223 */
4224 if (connection->n_outgoing > 0)
4225 {
4226 DBusList *link;
4227
4228 _dbus_verbose ("Dropping %d outgoing messages since we're disconnected\n",
4229 connection->n_outgoing);
4230
4231 while ((link = _dbus_list_get_last_link (&connection->outgoing_messages)))
4232 {
4233 _dbus_connection_message_sent_unlocked (connection, link->data);
4234 }
4235 }
4236}
4237
4238/* Note this may be called multiple times since we don't track whether we already did it */
4239static DBusDispatchStatus
4240notify_disconnected_and_dispatch_complete_unlocked (DBusConnection *connection)
4241{
4242 HAVE_LOCK_CHECK (connection);
4243
4244 if (connection->disconnect_message_link != NULL)
4245 {
4246 _dbus_verbose ("Sending disconnect message\n");
4247
4248 /* If we have pending calls, queue their timeouts - we want the Disconnected
4249 * to be the last message, after these timeouts.
4250 */
4251 connection_timeout_and_complete_all_pending_calls_unlocked (connection);
4252
4253 /* We haven't sent the disconnect message already,
4254 * and all real messages have been queued up.
4255 */
4256 _dbus_connection_queue_synthesized_message_link (connection,
4257 connection->disconnect_message_link);
4258 connection->disconnect_message_link = NULL;
4259
4260 return DBUS_DISPATCH_DATA_REMAINS;
4261 }
4262
4263 return DBUS_DISPATCH_COMPLETE;
4264}
4265
4266static DBusDispatchStatus
4267_dbus_connection_get_dispatch_status_unlocked (DBusConnection *connection)
4268{
4269 HAVE_LOCK_CHECK (connection);
4270
4271 if (connection->n_incoming > 0)
4272 return DBUS_DISPATCH_DATA_REMAINS;
4273 else if (!_dbus_transport_queue_messages (connection->transport))
4274 return DBUS_DISPATCH_NEED_MEMORY;
4275 else
4276 {
4277 DBusDispatchStatus status;
4278 dbus_bool_t is_connected;
4279
4280 status = _dbus_transport_get_dispatch_status (connection->transport);
4281 is_connected = _dbus_transport_get_is_connected (connection->transport);
4282
4283 _dbus_verbose ("dispatch status = %s is_connected = %d\n",
4284 DISPATCH_STATUS_NAME (status), is_connected);
4285
4286 if (!is_connected)
4287 {
4288 /* It's possible this would be better done by having an explicit
4289 * notification from _dbus_transport_disconnect() that would
4290 * synchronously do this, instead of waiting for the next dispatch
4291 * status check. However, probably not good to change until it causes
4292 * a problem.
4293 */
4294 notify_disconnected_unlocked (connection);
4295
4296 /* I'm not sure this is needed; the idea is that we want to
4297 * queue the Disconnected only after we've read all the
4298 * messages, but if we're disconnected maybe we are guaranteed
4299 * to have read them all ?
4300 */
4301 if (status == DBUS_DISPATCH_COMPLETE)
4302 status = notify_disconnected_and_dispatch_complete_unlocked (connection);
4303 }
4304
4305 if (status != DBUS_DISPATCH_COMPLETE)
4306 return status;
4307 else if (connection->n_incoming > 0)
4308 return DBUS_DISPATCH_DATA_REMAINS;
4309 else
4310 return DBUS_DISPATCH_COMPLETE;
4311 }
4312}
4313
4314static void
4315_dbus_connection_update_dispatch_status_and_unlock (DBusConnection *connection,
4316 DBusDispatchStatus new_status)
4317{
4318 dbus_bool_t changed;
4319 DBusDispatchStatusFunction function;
4320 void *data;
4321
4322 HAVE_LOCK_CHECK (connection);
4323
4324 _dbus_connection_ref_unlocked (connection);
4325
4326 changed = new_status != connection->last_dispatch_status;
4327
4328 connection->last_dispatch_status = new_status;
4329
4330 function = connection->dispatch_status_function;
4331 data = connection->dispatch_status_data;
4332
4333 if (connection->disconnected_message_arrived &&
4334 !connection->disconnected_message_processed)
4335 {
4336 connection->disconnected_message_processed = TRUE;
4337
4338 /* this does an unref, but we have a ref
4339 * so we should not run the finalizer here
4340 * inside the lock.
4341 */
4342 connection_forget_shared_unlocked (connection);
4343
4344 if (connection->exit_on_disconnect)
4345 {
4346 CONNECTION_UNLOCK (connection);
4347
4348 _dbus_verbose ("Exiting on Disconnected signal\n");
4349 _dbus_exit (1);
4350 _dbus_assert_not_reached ("Call to exit() returned");
4351 }
4352 }
4353
4354 /* We drop the lock */
4355 CONNECTION_UNLOCK (connection);
4356
4357 if (changed && function)
4358 {
4359 _dbus_verbose ("Notifying of change to dispatch status of %p now %d (%s)\n",
4360 connection, new_status,
4361 DISPATCH_STATUS_NAME (new_status));
4362 (* function) (connection, new_status, data);
4363 }
4364
4365 dbus_connection_unref (connection);
4366}
4367
4393 DBusDispatchStatus
4394dbus_connection_get_dispatch_status (DBusConnection *connection)
4395{
4396 DBusDispatchStatus status;
4397
4398 _dbus_return_val_if_fail (connection != NULL, DBUS_DISPATCH_COMPLETE);
4399
4400 _dbus_verbose ("start\n");
4401
4402 CONNECTION_LOCK (connection);
4403
4404 status = _dbus_connection_get_dispatch_status_unlocked (connection);
4405
4406 CONNECTION_UNLOCK (connection);
4407
4408 return status;
4409}
4410
4414static DBusHandlerResult
4415_dbus_connection_peer_filter_unlocked_no_update (DBusConnection *connection,
4416 DBusMessage *message)
4417{
4418 dbus_bool_t sent = FALSE;
4419 DBusMessage *ret = NULL;
4420 DBusList *expire_link;
4421
4422 if (connection->route_peer_messages && dbus_message_get_destination (message) != NULL)
4423 {
4424 /* This means we're letting the bus route this message */
4425 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
4426 }
4427
4428 if (!dbus_message_has_interface (message, DBUS_INTERFACE_PEER))
4429 {
4430 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
4431 }
4432
4433 /* Preallocate a linked-list link, so that if we need to dispose of a
4434 * message, we can attach it to the expired list */
4435 expire_link = _dbus_list_alloc_link (NULL);
4436
4437 if (!expire_link)
4438 return DBUS_HANDLER_RESULT_NEED_MEMORY;
4439
4440 if (dbus_message_is_method_call (message,
4441 DBUS_INTERFACE_PEER,
4442 "Ping"))
4443 {
4444 ret = dbus_message_new_method_return (message);
4445 if (ret == NULL)
4446 goto out;
4447
4448 sent = _dbus_connection_send_unlocked_no_update (connection, ret, NULL);
4449 }
4450 else if (dbus_message_is_method_call (message,
4451 DBUS_INTERFACE_PEER,
4452 "GetMachineId"))
4453 {
4454 DBusString uuid;
4455 DBusError error = DBUS_ERROR_INIT;
4456
4457 if (!_dbus_string_init (&uuid))
4458 goto out;
4459
4460 if (_dbus_get_local_machine_uuid_encoded (&uuid, &error))
4461 {
4462 const char *v_STRING;
4463
4464 ret = dbus_message_new_method_return (message);
4465
4466 if (ret == NULL)
4467 {
4468 _dbus_string_free (&uuid);
4469 goto out;
4470 }
4471
4472 v_STRING = _dbus_string_get_const_data (&uuid);
4473 if (dbus_message_append_args (ret,
4474 DBUS_TYPE_STRING, &v_STRING,
4475 DBUS_TYPE_INVALID))
4476 {
4477 sent = _dbus_connection_send_unlocked_no_update (connection, ret, NULL);
4478 }
4479 }
4480 else if (dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY))
4481 {
4482 dbus_error_free (&error);
4483 goto out;
4484 }
4485 else
4486 {
4487 ret = dbus_message_new_error (message, error.name, error.message);
4488 dbus_error_free (&error);
4489
4490 if (ret == NULL)
4491 goto out;
4492
4493 sent = _dbus_connection_send_unlocked_no_update (connection, ret,
4494 NULL);
4495 }
4496
4497 _dbus_string_free (&uuid);
4498 }
4499 else
4500 {
4501 /* We need to bounce anything else with this interface, otherwise apps
4502 * could start extending the interface and when we added extensions
4503 * here to DBusConnection we'd break those apps.
4504 */
4505 ret = dbus_message_new_error (message,
4506 DBUS_ERROR_UNKNOWN_METHOD,
4507 "Unknown method invoked on org.freedesktop.DBus.Peer interface");
4508 if (ret == NULL)
4509 goto out;
4510
4511 sent = _dbus_connection_send_unlocked_no_update (connection, ret, NULL);
4512 }
4513
4514out:
4515 if (ret == NULL)
4516 {
4517 _dbus_list_free_link (expire_link);
4518 }
4519 else
4520 {
4521 /* It'll be safe to unref the reply when we unlock */
4522 expire_link->data = ret;
4523 _dbus_list_prepend_link (&connection->expired_messages, expire_link);
4524 }
4525
4526 if (!sent)
4527 return DBUS_HANDLER_RESULT_NEED_MEMORY;
4528
4529 return DBUS_HANDLER_RESULT_HANDLED;
4530}
4531
4538static DBusHandlerResult
4539_dbus_connection_run_builtin_filters_unlocked_no_update (DBusConnection *connection,
4540 DBusMessage *message)
4541{
4542 /* We just run one filter for now but have the option to run more
4543 if the spec calls for it in the future */
4544
4545 return _dbus_connection_peer_filter_unlocked_no_update (connection, message);
4546}
4547
4590 DBusDispatchStatus
4591dbus_connection_dispatch (DBusConnection *connection)
4592{
4593 DBusMessage *message;
4594 DBusList *link, *filter_list_copy, *message_link;
4595 DBusHandlerResult result;
4596 DBusPendingCall *pending;
4597 dbus_int32_t reply_serial;
4598 DBusDispatchStatus status;
4599 dbus_bool_t found_object;
4600
4601 _dbus_return_val_if_fail (connection != NULL, DBUS_DISPATCH_COMPLETE);
4602
4603 _dbus_verbose ("\n");
4604
4605 CONNECTION_LOCK (connection);
4606 status = _dbus_connection_get_dispatch_status_unlocked (connection);
4607 if (status != DBUS_DISPATCH_DATA_REMAINS)
4608 {
4609 /* unlocks and calls out to user code */
4610 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
4611 return status;
4612 }
4613
4614 /* We need to ref the connection since the callback could potentially
4615 * drop the last ref to it
4616 */
4617 _dbus_connection_ref_unlocked (connection);
4618
4619 _dbus_connection_acquire_dispatch (connection);
4620 HAVE_LOCK_CHECK (connection);
4621
4622 message_link = _dbus_connection_pop_message_link_unlocked (connection);
4623 if (message_link == NULL)
4624 {
4625 /* another thread dispatched our stuff */
4626
4627 _dbus_verbose ("another thread dispatched message (during acquire_dispatch above)\n");
4628
4629 _dbus_connection_release_dispatch (connection);
4630
4631 status = _dbus_connection_get_dispatch_status_unlocked (connection);
4632
4633 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
4634
4635 dbus_connection_unref (connection);
4636
4637 return status;
4638 }
4639
4640 message = message_link->data;
4641
4642 _dbus_verbose (" dispatching message %p (%s %s %s '%s')\n",
4643 message,
4644 dbus_message_type_to_string (dbus_message_get_type (message)),
4645 dbus_message_get_interface (message) ?
4646 dbus_message_get_interface (message) :
4647 "no interface",
4648 dbus_message_get_member (message) ?
4649 dbus_message_get_member (message) :
4650 "no member",
4651 dbus_message_get_signature (message));
4652
4653 result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
4654
4655 /* Pending call handling must be first, because if you do
4656 * dbus_connection_send_with_reply_and_block() or
4657 * dbus_pending_call_block() then no handlers/filters will be run on
4658 * the reply. We want consistent semantics in the case where we
4659 * dbus_connection_dispatch() the reply.
4660 */
4661
4662 reply_serial = dbus_message_get_reply_serial (message);
4663 pending = _dbus_hash_table_lookup_int (connection->pending_replies,
4664 reply_serial);
4665 if (pending)
4666 {
4667 _dbus_verbose ("Dispatching a pending reply\n");
4668 complete_pending_call_and_unlock (connection, pending, message);
4669 pending = NULL; /* it's probably unref'd */
4670
4671 CONNECTION_LOCK (connection);
4672 _dbus_verbose ("pending call completed in dispatch\n");
4673 result = DBUS_HANDLER_RESULT_HANDLED;
4674 goto out;
4675 }
4676
4677 /* If skipping builtin filters, we are probably a monitor. */
4678 if (connection->builtin_filters_enabled)
4679 {
4680 result = _dbus_connection_run_builtin_filters_unlocked_no_update (connection, message);
4681 if (result != DBUS_HANDLER_RESULT_NOT_YET_HANDLED)
4682 goto out;
4683 }
4684
4685 if (!_dbus_list_copy (&connection->filter_list, &filter_list_copy))
4686 {
4687 _dbus_connection_release_dispatch (connection);
4688 HAVE_LOCK_CHECK (connection);
4689
4690 _dbus_connection_failed_pop (connection, message_link);
4691
4692 /* unlocks and calls user code */
4693 _dbus_connection_update_dispatch_status_and_unlock (connection,
4694 DBUS_DISPATCH_NEED_MEMORY);
4695 dbus_connection_unref (connection);
4696
4697 return DBUS_DISPATCH_NEED_MEMORY;
4698 }
4699
4700 for (link = _dbus_list_get_first_link (&filter_list_copy);
4701 link != NULL;
4702 link = _dbus_list_get_next_link (&filter_list_copy, link))
4703 _dbus_message_filter_ref (link->data);
4704
4705 /* We're still protected from dispatch() reentrancy here
4706 * since we acquired the dispatcher
4707 */
4708 CONNECTION_UNLOCK (connection);
4709
4710 link = _dbus_list_get_first_link (&filter_list_copy);
4711 while (link != NULL)
4712 {
4713 DBusMessageFilter *filter = link->data;
4714 DBusList *next = _dbus_list_get_next_link (&filter_list_copy, link);
4715
4716 if (filter->function == NULL)
4717 {
4718 _dbus_verbose (" filter was removed in a callback function\n");
4719 link = next;
4720 continue;
4721 }
4722
4723 _dbus_verbose (" running filter on message %p\n", message);
4724 result = (* filter->function) (connection, message, filter->user_data);
4725
4726 if (result != DBUS_HANDLER_RESULT_NOT_YET_HANDLED)
4727 break;
4728
4729 link = next;
4730 }
4731
4732 _dbus_list_clear_full (&filter_list_copy,
4733 (DBusFreeFunction) _dbus_message_filter_unref);
4734
4735 CONNECTION_LOCK (connection);
4736
4737 if (result == DBUS_HANDLER_RESULT_NEED_MEMORY)
4738 {
4739 _dbus_verbose ("No memory\n");
4740 goto out;
4741 }
4742 else if (result == DBUS_HANDLER_RESULT_HANDLED)
4743 {
4744 _dbus_verbose ("filter handled message in dispatch\n");
4745 goto out;
4746 }
4747
4748 /* We're still protected from dispatch() reentrancy here
4749 * since we acquired the dispatcher
4750 */
4751 _dbus_verbose (" running object path dispatch on message %p (%s %s %s '%s')\n",
4752 message,
4753 dbus_message_type_to_string (dbus_message_get_type (message)),
4754 dbus_message_get_interface (message) ?
4755 dbus_message_get_interface (message) :
4756 "no interface",
4757 dbus_message_get_member (message) ?
4758 dbus_message_get_member (message) :
4759 "no member",
4760 dbus_message_get_signature (message));
4761
4762 HAVE_LOCK_CHECK (connection);
4763 result = _dbus_object_tree_dispatch_and_unlock (connection->objects,
4764 message,
4765 &found_object);
4766
4767 CONNECTION_LOCK (connection);
4768
4769 if (result != DBUS_HANDLER_RESULT_NOT_YET_HANDLED)
4770 {
4771 _dbus_verbose ("object tree handled message in dispatch\n");
4772 goto out;
4773 }
4774
4775 if (dbus_message_get_type (message) == DBUS_MESSAGE_TYPE_METHOD_CALL)
4776 {
4777 DBusMessage *reply;
4778 DBusString str;
4779 DBusPreallocatedSend *preallocated;
4780 DBusList *expire_link;
4781
4782 _dbus_verbose (" sending error %s\n",
4783 DBUS_ERROR_UNKNOWN_METHOD);
4784
4785 if (!_dbus_string_init (&str))
4786 {
4787 result = DBUS_HANDLER_RESULT_NEED_MEMORY;
4788 _dbus_verbose ("no memory for error string in dispatch\n");
4789 goto out;
4790 }
4791
4792 if (!_dbus_string_append_printf (&str,
4793 "Method \"%s\" with signature \"%s\" on interface \"%s\" doesn't exist\n",
4794 dbus_message_get_member (message),
4795 dbus_message_get_signature (message),
4796 dbus_message_get_interface (message)))
4797 {
4798 _dbus_string_free (&str);
4799 result = DBUS_HANDLER_RESULT_NEED_MEMORY;
4800 _dbus_verbose ("no memory for error string in dispatch\n");
4801 goto out;
4802 }
4803
4804 reply = dbus_message_new_error (message,
4805 found_object ? DBUS_ERROR_UNKNOWN_METHOD : DBUS_ERROR_UNKNOWN_OBJECT,
4806 _dbus_string_get_const_data (&str));
4807 _dbus_string_free (&str);
4808
4809 if (reply == NULL)
4810 {
4811 result = DBUS_HANDLER_RESULT_NEED_MEMORY;
4812 _dbus_verbose ("no memory for error reply in dispatch\n");
4813 goto out;
4814 }
4815
4816 expire_link = _dbus_list_alloc_link (reply);
4817
4818 if (expire_link == NULL)
4819 {
4820 dbus_message_unref (reply);
4821 result = DBUS_HANDLER_RESULT_NEED_MEMORY;
4822 _dbus_verbose ("no memory for error send in dispatch\n");
4823 goto out;
4824 }
4825
4826 preallocated = _dbus_connection_preallocate_send_unlocked (connection);
4827
4828 if (preallocated == NULL)
4829 {
4830 _dbus_list_free_link (expire_link);
4831 /* It's OK that this is finalized, because it hasn't been seen by
4832 * anything that could attach user callbacks */
4833 dbus_message_unref (reply);
4834 result = DBUS_HANDLER_RESULT_NEED_MEMORY;
4835 _dbus_verbose ("no memory for error send in dispatch\n");
4836 goto out;
4837 }
4838
4839 _dbus_connection_send_preallocated_unlocked_no_update (connection, preallocated,
4840 reply, NULL);
4841 /* reply will be freed when we release the lock */
4842 _dbus_list_prepend_link (&connection->expired_messages, expire_link);
4843
4844 result = DBUS_HANDLER_RESULT_HANDLED;
4845 }
4846
4847 _dbus_verbose (" done dispatching %p (%s %s %s '%s') on connection %p\n", message,
4848 dbus_message_type_to_string (dbus_message_get_type (message)),
4849 dbus_message_get_interface (message) ?
4850 dbus_message_get_interface (message) :
4851 "no interface",
4852 dbus_message_get_member (message) ?
4853 dbus_message_get_member (message) :
4854 "no member",
4855 dbus_message_get_signature (message),
4856 connection);
4857
4858 out:
4859 if (result == DBUS_HANDLER_RESULT_NEED_MEMORY)
4860 {
4861 _dbus_verbose ("out of memory\n");
4862
4863 /* Put message back, and we'll start over.
4864 * Yes this means handlers must be idempotent if they
4865 * don't return HANDLED; c'est la vie.
4866 */
4867 _dbus_connection_putback_message_link_unlocked (connection,
4868 message_link);
4869 /* now we don't want to free them */
4870 message_link = NULL;
4871 message = NULL;
4872 }
4873 else
4874 {
4875 _dbus_verbose (" ... done dispatching\n");
4876 }
4877
4878 _dbus_connection_release_dispatch (connection);
4879 HAVE_LOCK_CHECK (connection);
4880
4881 if (message != NULL)
4882 {
4883 /* We don't want this message to count in maximum message limits when
4884 * computing the dispatch status, below. We have to drop the lock
4885 * temporarily, because finalizing a message can trigger callbacks.
4886 *
4887 * We have a reference to the connection, and we don't use any cached
4888 * pointers to the connection's internals below this point, so it should
4889 * be safe to drop the lock and take it back. */
4890 CONNECTION_UNLOCK (connection);
4891 dbus_message_unref (message);
4892 CONNECTION_LOCK (connection);
4893 }
4894
4895 if (message_link != NULL)
4896 _dbus_list_free_link (message_link);
4897
4898 _dbus_verbose ("before final status update\n");
4899 status = _dbus_connection_get_dispatch_status_unlocked (connection);
4900
4901 /* unlocks and calls user code */
4902 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
4903
4904 dbus_connection_unref (connection);
4905
4906 return status;
4907}
4908
4970 dbus_bool_t
4971dbus_connection_set_watch_functions (DBusConnection *connection,
4972 DBusAddWatchFunction add_function,
4973 DBusRemoveWatchFunction remove_function,
4974 DBusWatchToggledFunction toggled_function,
4975 void *data,
4976 DBusFreeFunction free_data_function)
4977{
4978 dbus_bool_t retval;
4979
4980 _dbus_return_val_if_fail (connection != NULL, FALSE);
4981
4982 CONNECTION_LOCK (connection);
4983
4984 retval = _dbus_watch_list_set_functions (connection->watches,
4985 add_function, remove_function,
4986 toggled_function,
4987 data, free_data_function);
4988
4989 CONNECTION_UNLOCK (connection);
4990
4991 return retval;
4992}
4993
5033 dbus_bool_t
5034dbus_connection_set_timeout_functions (DBusConnection *connection,
5035 DBusAddTimeoutFunction add_function,
5036 DBusRemoveTimeoutFunction remove_function,
5037 DBusTimeoutToggledFunction toggled_function,
5038 void *data,
5039 DBusFreeFunction free_data_function)
5040{
5041 dbus_bool_t retval;
5042
5043 _dbus_return_val_if_fail (connection != NULL, FALSE);
5044
5045 CONNECTION_LOCK (connection);
5046
5047 retval = _dbus_timeout_list_set_functions (connection->timeouts,
5048 add_function, remove_function,
5049 toggled_function,
5050 data, free_data_function);
5051
5052 CONNECTION_UNLOCK (connection);
5053
5054 return retval;
5055}
5056
5071void
5072dbus_connection_set_wakeup_main_function (DBusConnection *connection,
5073 DBusWakeupMainFunction wakeup_main_function,
5074 void *data,
5075 DBusFreeFunction free_data_function)
5076{
5077 void *old_data;
5078 DBusFreeFunction old_free_data;
5079
5080 _dbus_return_if_fail (connection != NULL);
5081
5082 CONNECTION_LOCK (connection);
5083 old_data = connection->wakeup_main_data;
5084 old_free_data = connection->free_wakeup_main_data;
5085
5086 connection->wakeup_main_function = wakeup_main_function;
5087 connection->wakeup_main_data = data;
5088 connection->free_wakeup_main_data = free_data_function;
5089
5090 CONNECTION_UNLOCK (connection);
5091
5092 /* Callback outside the lock */
5093 if (old_free_data)
5094 (*old_free_data) (old_data);
5095}
5096
5117void
5118dbus_connection_set_dispatch_status_function (DBusConnection *connection,
5119 DBusDispatchStatusFunction function,
5120 void *data,
5121 DBusFreeFunction free_data_function)
5122{
5123 void *old_data;
5124 DBusFreeFunction old_free_data;
5125
5126 _dbus_return_if_fail (connection != NULL);
5127
5128 CONNECTION_LOCK (connection);
5129 old_data = connection->dispatch_status_data;
5130 old_free_data = connection->free_dispatch_status_data;
5131
5132 connection->dispatch_status_function = function;
5133 connection->dispatch_status_data = data;
5134 connection->free_dispatch_status_data = free_data_function;
5135
5136 CONNECTION_UNLOCK (connection);
5137
5138 /* Callback outside the lock */
5139 if (old_free_data)
5140 (*old_free_data) (old_data);
5141}
5142
5162 dbus_bool_t
5163dbus_connection_get_unix_fd (DBusConnection *connection,
5164 int *fd)
5165{
5166 _dbus_return_val_if_fail (connection != NULL, FALSE);
5167 _dbus_return_val_if_fail (connection->transport != NULL, FALSE);
5168
5169#ifdef DBUS_WIN
5170 /* FIXME do this on a lower level */
5171 return FALSE;
5172#endif
5173
5174 return dbus_connection_get_socket(connection, fd);
5175}
5176
5192 dbus_bool_t
5193dbus_connection_get_socket(DBusConnection *connection,
5194 int *fd)
5195{
5196 dbus_bool_t retval;
5197 DBusSocket s = DBUS_SOCKET_INIT;
5198
5199 _dbus_return_val_if_fail (connection != NULL, FALSE);
5200 _dbus_return_val_if_fail (connection->transport != NULL, FALSE);
5201
5202 CONNECTION_LOCK (connection);
5203
5204 retval = _dbus_transport_get_socket_fd (connection->transport, &s);
5205
5206 if (retval)
5207 {
5208 *fd = _dbus_socket_get_int (s);
5209 }
5210
5211 CONNECTION_UNLOCK (connection);
5212
5213 return retval;
5214}
5215
5216
5239 dbus_bool_t
5240dbus_connection_get_unix_user (DBusConnection *connection,
5241 unsigned long *uid)
5242{
5243 dbus_bool_t result;
5244
5245 _dbus_return_val_if_fail (connection != NULL, FALSE);
5246 _dbus_return_val_if_fail (uid != NULL, FALSE);
5247
5248 CONNECTION_LOCK (connection);
5249
5250 if (!_dbus_transport_try_to_authenticate (connection->transport))
5251 result = FALSE;
5252 else
5253 result = _dbus_transport_get_unix_user (connection->transport,
5254 uid);
5255
5256#ifdef DBUS_WIN
5257 _dbus_assert (!result);
5258#endif
5259
5260 CONNECTION_UNLOCK (connection);
5261
5262 return result;
5263}
5264
5275 dbus_bool_t
5276dbus_connection_get_unix_process_id (DBusConnection *connection,
5277 unsigned long *pid)
5278{
5279 dbus_bool_t result;
5280
5281 _dbus_return_val_if_fail (connection != NULL, FALSE);
5282 _dbus_return_val_if_fail (pid != NULL, FALSE);
5283
5284 CONNECTION_LOCK (connection);
5285
5286 if (!_dbus_transport_try_to_authenticate (connection->transport))
5287 result = FALSE;
5288 else
5289 result = _dbus_transport_get_unix_process_id (connection->transport,
5290 pid);
5291
5292 CONNECTION_UNLOCK (connection);
5293
5294 return result;
5295}
5296
5308 dbus_bool_t
5309dbus_connection_get_adt_audit_session_data (DBusConnection *connection,
5310 void **data,
5311 dbus_int32_t *data_size)
5312{
5313 dbus_bool_t result;
5314
5315 _dbus_return_val_if_fail (connection != NULL, FALSE);
5316 _dbus_return_val_if_fail (data != NULL, FALSE);
5317 _dbus_return_val_if_fail (data_size != NULL, FALSE);
5318
5319 CONNECTION_LOCK (connection);
5320
5321 if (!_dbus_transport_try_to_authenticate (connection->transport))
5322 result = FALSE;
5323 else
5324 result = _dbus_transport_get_adt_audit_session_data (connection->transport,
5325 data,
5326 data_size);
5327 CONNECTION_UNLOCK (connection);
5328
5329 return result;
5330}
5331
5354void
5355dbus_connection_set_unix_user_function (DBusConnection *connection,
5356 DBusAllowUnixUserFunction function,
5357 void *data,
5358 DBusFreeFunction free_data_function)
5359{
5360 void *old_data = NULL;
5361 DBusFreeFunction old_free_function = NULL;
5362
5363 _dbus_return_if_fail (connection != NULL);
5364
5365 CONNECTION_LOCK (connection);
5366 _dbus_transport_set_unix_user_function (connection->transport,
5367 function, data, free_data_function,
5368 &old_data, &old_free_function);
5369 CONNECTION_UNLOCK (connection);
5370
5371 if (old_free_function != NULL)
5372 (* old_free_function) (old_data);
5373}
5374
5375/* Same calling convention as dbus_connection_get_windows_user */
5376 dbus_bool_t
5377_dbus_connection_get_linux_security_label (DBusConnection *connection,
5378 char **label_p)
5379{
5380 dbus_bool_t result;
5381
5382 _dbus_assert (connection != NULL);
5383 _dbus_assert (label_p != NULL);
5384
5385 CONNECTION_LOCK (connection);
5386
5387 if (!_dbus_transport_try_to_authenticate (connection->transport))
5388 result = FALSE;
5389 else
5390 result = _dbus_transport_get_linux_security_label (connection->transport,
5391 label_p);
5392#ifndef __linux__
5393 _dbus_assert (!result);
5394#endif
5395
5396 CONNECTION_UNLOCK (connection);
5397
5398 return result;
5399}
5400
5401 DBusCredentials *
5402_dbus_connection_get_credentials (DBusConnection *connection)
5403{
5404 DBusCredentials *result;
5405
5406 _dbus_assert (connection != NULL);
5407
5408 CONNECTION_LOCK (connection);
5409
5410 if (!_dbus_transport_try_to_authenticate (connection->transport))
5411 result = NULL;
5412 else
5413 result = _dbus_transport_get_credentials (connection->transport);
5414
5415 CONNECTION_UNLOCK (connection);
5416
5417 return result;
5418}
5419
5451 dbus_bool_t
5452dbus_connection_get_windows_user (DBusConnection *connection,
5453 char **windows_sid_p)
5454{
5455 dbus_bool_t result;
5456
5457 _dbus_return_val_if_fail (connection != NULL, FALSE);
5458 _dbus_return_val_if_fail (windows_sid_p != NULL, FALSE);
5459
5460 CONNECTION_LOCK (connection);
5461
5462 if (!_dbus_transport_try_to_authenticate (connection->transport))
5463 result = FALSE;
5464 else
5465 result = _dbus_transport_get_windows_user (connection->transport,
5466 windows_sid_p);
5467
5468#ifdef DBUS_UNIX
5469 _dbus_assert (!result);
5470#endif
5471
5472 CONNECTION_UNLOCK (connection);
5473
5474 return result;
5475}
5476
5498void
5499dbus_connection_set_windows_user_function (DBusConnection *connection,
5500 DBusAllowWindowsUserFunction function,
5501 void *data,
5502 DBusFreeFunction free_data_function)
5503{
5504 void *old_data = NULL;
5505 DBusFreeFunction old_free_function = NULL;
5506
5507 _dbus_return_if_fail (connection != NULL);
5508
5509 CONNECTION_LOCK (connection);
5510 _dbus_transport_set_windows_user_function (connection->transport,
5511 function, data, free_data_function,
5512 &old_data, &old_free_function);
5513 CONNECTION_UNLOCK (connection);
5514
5515 if (old_free_function != NULL)
5516 (* old_free_function) (old_data);
5517}
5518
5545void
5546dbus_connection_set_allow_anonymous (DBusConnection *connection,
5547 dbus_bool_t value)
5548{
5549 _dbus_return_if_fail (connection != NULL);
5550
5551 CONNECTION_LOCK (connection);
5552 _dbus_transport_set_allow_anonymous (connection->transport, value);
5553 CONNECTION_UNLOCK (connection);
5554}
5555
5577void
5578dbus_connection_set_builtin_filters_enabled (DBusConnection *connection,
5579 dbus_bool_t value)
5580{
5581 _dbus_return_if_fail (connection != NULL);
5582
5583 CONNECTION_LOCK (connection);
5584 connection->builtin_filters_enabled = value;
5585 CONNECTION_UNLOCK (connection);
5586}
5587
5605void
5606dbus_connection_set_route_peer_messages (DBusConnection *connection,
5607 dbus_bool_t value)
5608{
5609 _dbus_return_if_fail (connection != NULL);
5610
5611 CONNECTION_LOCK (connection);
5612 connection->route_peer_messages = value;
5613 CONNECTION_UNLOCK (connection);
5614}
5615
5637 dbus_bool_t
5638dbus_connection_add_filter (DBusConnection *connection,
5639 DBusHandleMessageFunction function,
5640 void *user_data,
5641 DBusFreeFunction free_data_function)
5642{
5643 DBusMessageFilter *filter;
5644
5645 _dbus_return_val_if_fail (connection != NULL, FALSE);
5646 _dbus_return_val_if_fail (function != NULL, FALSE);
5647
5648 filter = dbus_new0 (DBusMessageFilter, 1);
5649 if (filter == NULL)
5650 return FALSE;
5651
5652 _dbus_atomic_inc (&filter->refcount);
5653
5654 CONNECTION_LOCK (connection);
5655
5656 if (!_dbus_list_append (&connection->filter_list,
5657 filter))
5658 {
5659 _dbus_message_filter_unref (filter);
5660 CONNECTION_UNLOCK (connection);
5661 return FALSE;
5662 }
5663
5664 /* Fill in filter after all memory allocated,
5665 * so we don't run the free_user_data_function
5666 * if the add_filter() fails
5667 */
5668
5669 filter->function = function;
5670 filter->user_data = user_data;
5671 filter->free_user_data_function = free_data_function;
5672
5673 CONNECTION_UNLOCK (connection);
5674 return TRUE;
5675}
5676
5689void
5690dbus_connection_remove_filter (DBusConnection *connection,
5691 DBusHandleMessageFunction function,
5692 void *user_data)
5693{
5694 DBusList *link;
5695 DBusMessageFilter *filter;
5696
5697 _dbus_return_if_fail (connection != NULL);
5698 _dbus_return_if_fail (function != NULL);
5699
5700 CONNECTION_LOCK (connection);
5701
5702 filter = NULL;
5703
5704 link = _dbus_list_get_last_link (&connection->filter_list);
5705 while (link != NULL)
5706 {
5707 filter = link->data;
5708
5709 if (filter->function == function &&
5710 filter->user_data == user_data)
5711 {
5712 _dbus_list_remove_link (&connection->filter_list, link);
5713 filter->function = NULL;
5714
5715 break;
5716 }
5717
5718 link = _dbus_list_get_prev_link (&connection->filter_list, link);
5719 filter = NULL;
5720 }
5721
5722 CONNECTION_UNLOCK (connection);
5723
5724#ifndef DBUS_DISABLE_CHECKS
5725 if (filter == NULL)
5726 {
5727 _dbus_warn_check_failed ("Attempt to remove filter function %p user data %p, but no such filter has been added",
5728 function, user_data);
5729 return;
5730 }
5731#endif
5732
5733 /* Call application code */
5734 if (filter->free_user_data_function)
5735 (* filter->free_user_data_function) (filter->user_data);
5736
5737 filter->free_user_data_function = NULL;
5738 filter->user_data = NULL;
5739
5740 _dbus_message_filter_unref (filter);
5741}
5742
5758static dbus_bool_t
5759_dbus_connection_register_object_path (DBusConnection *connection,
5760 dbus_bool_t fallback,
5761 const char *path,
5762 const DBusObjectPathVTable *vtable,
5763 void *user_data,
5764 DBusError *error)
5765{
5766 char **decomposed_path;
5767 dbus_bool_t retval;
5768
5769 if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
5770 return FALSE;
5771
5772 CONNECTION_LOCK (connection);
5773
5774 retval = _dbus_object_tree_register (connection->objects,
5775 fallback,
5776 (const char **) decomposed_path, vtable,
5777 user_data, error);
5778
5779 CONNECTION_UNLOCK (connection);
5780
5781 dbus_free_string_array (decomposed_path);
5782
5783 return retval;
5784}
5785
5798 dbus_bool_t
5799dbus_connection_try_register_object_path (DBusConnection *connection,
5800 const char *path,
5801 const DBusObjectPathVTable *vtable,
5802 void *user_data,
5803 DBusError *error)
5804{
5805 _dbus_return_val_if_fail (connection != NULL, FALSE);
5806 _dbus_return_val_if_fail (path != NULL, FALSE);
5807 _dbus_return_val_if_fail (path[0] == '/', FALSE);
5808 _dbus_return_val_if_fail (vtable != NULL, FALSE);
5809
5810 return _dbus_connection_register_object_path (connection, FALSE, path, vtable, user_data, error);
5811}
5812
5828 dbus_bool_t
5829dbus_connection_register_object_path (DBusConnection *connection,
5830 const char *path,
5831 const DBusObjectPathVTable *vtable,
5832 void *user_data)
5833{
5834 dbus_bool_t retval;
5835 DBusError error = DBUS_ERROR_INIT;
5836
5837 _dbus_return_val_if_fail (connection != NULL, FALSE);
5838 _dbus_return_val_if_fail (path != NULL, FALSE);
5839 _dbus_return_val_if_fail (path[0] == '/', FALSE);
5840 _dbus_return_val_if_fail (vtable != NULL, FALSE);
5841
5842 retval = _dbus_connection_register_object_path (connection, FALSE, path, vtable, user_data, &error);
5843
5844 if (dbus_error_has_name (&error, DBUS_ERROR_OBJECT_PATH_IN_USE))
5845 {
5846 _dbus_warn ("%s", error.message);
5847 dbus_error_free (&error);
5848 return FALSE;
5849 }
5850
5851 return retval;
5852}
5853
5868 dbus_bool_t
5869dbus_connection_try_register_fallback (DBusConnection *connection,
5870 const char *path,
5871 const DBusObjectPathVTable *vtable,
5872 void *user_data,
5873 DBusError *error)
5874{
5875 _dbus_return_val_if_fail (connection != NULL, FALSE);
5876 _dbus_return_val_if_fail (path != NULL, FALSE);
5877 _dbus_return_val_if_fail (path[0] == '/', FALSE);
5878 _dbus_return_val_if_fail (vtable != NULL, FALSE);
5879
5880 return _dbus_connection_register_object_path (connection, TRUE, path, vtable, user_data, error);
5881}
5882
5900 dbus_bool_t
5901dbus_connection_register_fallback (DBusConnection *connection,
5902 const char *path,
5903 const DBusObjectPathVTable *vtable,
5904 void *user_data)
5905{
5906 dbus_bool_t retval;
5907 DBusError error = DBUS_ERROR_INIT;
5908
5909 _dbus_return_val_if_fail (connection != NULL, FALSE);
5910 _dbus_return_val_if_fail (path != NULL, FALSE);
5911 _dbus_return_val_if_fail (path[0] == '/', FALSE);
5912 _dbus_return_val_if_fail (vtable != NULL, FALSE);
5913
5914 retval = _dbus_connection_register_object_path (connection, TRUE, path, vtable, user_data, &error);
5915
5916 if (dbus_error_has_name (&error, DBUS_ERROR_OBJECT_PATH_IN_USE))
5917 {
5918 _dbus_warn ("%s", error.message);
5919 dbus_error_free (&error);
5920 return FALSE;
5921 }
5922
5923 return retval;
5924}
5925
5935 dbus_bool_t
5936dbus_connection_unregister_object_path (DBusConnection *connection,
5937 const char *path)
5938{
5939 char **decomposed_path;
5940
5941 _dbus_return_val_if_fail (connection != NULL, FALSE);
5942 _dbus_return_val_if_fail (path != NULL, FALSE);
5943 _dbus_return_val_if_fail (path[0] == '/', FALSE);
5944
5945 if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
5946 return FALSE;
5947
5948 CONNECTION_LOCK (connection);
5949
5950 _dbus_object_tree_unregister_and_unlock (connection->objects, (const char **) decomposed_path);
5951
5952 dbus_free_string_array (decomposed_path);
5953
5954 return TRUE;
5955}
5956
5967 dbus_bool_t
5968dbus_connection_get_object_path_data (DBusConnection *connection,
5969 const char *path,
5970 void **data_p)
5971{
5972 char **decomposed_path;
5973
5974 _dbus_return_val_if_fail (connection != NULL, FALSE);
5975 _dbus_return_val_if_fail (path != NULL, FALSE);
5976 _dbus_return_val_if_fail (data_p != NULL, FALSE);
5977
5978 *data_p = NULL;
5979
5980 if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
5981 return FALSE;
5982
5983 CONNECTION_LOCK (connection);
5984
5985 *data_p = _dbus_object_tree_get_user_data_unlocked (connection->objects, (const char**) decomposed_path);
5986
5987 CONNECTION_UNLOCK (connection);
5988
5989 dbus_free_string_array (decomposed_path);
5990
5991 return TRUE;
5992}
5993
6004 dbus_bool_t
6005dbus_connection_list_registered (DBusConnection *connection,
6006 const char *parent_path,
6007 char ***child_entries)
6008{
6009 char **decomposed_path;
6010 dbus_bool_t retval;
6011 _dbus_return_val_if_fail (connection != NULL, FALSE);
6012 _dbus_return_val_if_fail (parent_path != NULL, FALSE);
6013 _dbus_return_val_if_fail (parent_path[0] == '/', FALSE);
6014 _dbus_return_val_if_fail (child_entries != NULL, FALSE);
6015
6016 if (!_dbus_decompose_path (parent_path, strlen (parent_path), &decomposed_path, NULL))
6017 return FALSE;
6018
6019 CONNECTION_LOCK (connection);
6020
6021 retval = _dbus_object_tree_list_registered_and_unlock (connection->objects,
6022 (const char **) decomposed_path,
6023 child_entries);
6024 dbus_free_string_array (decomposed_path);
6025
6026 return retval;
6027}
6028
6029static DBusDataSlotAllocator slot_allocator =
6030 _DBUS_DATA_SLOT_ALLOCATOR_INIT (_DBUS_LOCK_NAME (connection_slots));
6031
6046 dbus_bool_t
6047dbus_connection_allocate_data_slot (dbus_int32_t *slot_p)
6048{
6049 return _dbus_data_slot_allocator_alloc (&slot_allocator,
6050 slot_p);
6051}
6052
6064void
6065dbus_connection_free_data_slot (dbus_int32_t *slot_p)
6066{
6067 _dbus_return_if_fail (*slot_p >= 0);
6068
6069 _dbus_data_slot_allocator_free (&slot_allocator, slot_p);
6070}
6071
6094 dbus_bool_t
6095dbus_connection_set_data (DBusConnection *connection,
6096 dbus_int32_t slot,
6097 void *data,
6098 DBusFreeFunction free_data_func)
6099{
6100 DBusFreeFunction old_free_func;
6101 void *old_data;
6102 dbus_bool_t retval;
6103
6104 _dbus_return_val_if_fail (connection != NULL, FALSE);
6105 _dbus_return_val_if_fail (slot >= 0, FALSE);
6106
6107 SLOTS_LOCK (connection);
6108
6109 retval = _dbus_data_slot_list_set (&slot_allocator,
6110 &connection->slot_list,
6111 slot, data, free_data_func,
6112 &old_free_func, &old_data);
6113
6114 SLOTS_UNLOCK (connection);
6115
6116 if (retval)
6117 {
6118 /* Do the actual free outside the connection lock */
6119 if (old_free_func)
6120 (* old_free_func) (old_data);
6121 }
6122
6123 return retval;
6124}
6125
6143void*
6144dbus_connection_get_data (DBusConnection *connection,
6145 dbus_int32_t slot)
6146{
6147 void *res;
6148
6149 _dbus_return_val_if_fail (connection != NULL, NULL);
6150 _dbus_return_val_if_fail (slot >= 0, NULL);
6151
6152 SLOTS_LOCK (connection);
6153
6154 res = _dbus_data_slot_list_get (&slot_allocator,
6155 &connection->slot_list,
6156 slot);
6157
6158 SLOTS_UNLOCK (connection);
6159
6160 return res;
6161}
6162
6169void
6170dbus_connection_set_change_sigpipe (dbus_bool_t will_modify_sigpipe)
6171{
6172 if (will_modify_sigpipe)
6173 _dbus_atomic_set_nonzero (&_dbus_modify_sigpipe);
6174 else
6175 _dbus_atomic_set_zero (&_dbus_modify_sigpipe);
6176}
6177
6186void
6187dbus_connection_set_max_message_size (DBusConnection *connection,
6188 long size)
6189{
6190 _dbus_return_if_fail (connection != NULL);
6191
6192 CONNECTION_LOCK (connection);
6193 _dbus_transport_set_max_message_size (connection->transport,
6194 size);
6195 CONNECTION_UNLOCK (connection);
6196}
6197
6204long
6205dbus_connection_get_max_message_size (DBusConnection *connection)
6206{
6207 long res;
6208
6209 _dbus_return_val_if_fail (connection != NULL, 0);
6210
6211 CONNECTION_LOCK (connection);
6212 res = _dbus_transport_get_max_message_size (connection->transport);
6213 CONNECTION_UNLOCK (connection);
6214 return res;
6215}
6216
6225void
6226dbus_connection_set_max_message_unix_fds (DBusConnection *connection,
6227 long n)
6228{
6229 _dbus_return_if_fail (connection != NULL);
6230
6231 CONNECTION_LOCK (connection);
6232 _dbus_transport_set_max_message_unix_fds (connection->transport,
6233 n);
6234 CONNECTION_UNLOCK (connection);
6235}
6236
6243long
6244dbus_connection_get_max_message_unix_fds (DBusConnection *connection)
6245{
6246 long res;
6247
6248 _dbus_return_val_if_fail (connection != NULL, 0);
6249
6250 CONNECTION_LOCK (connection);
6251 res = _dbus_transport_get_max_message_unix_fds (connection->transport);
6252 CONNECTION_UNLOCK (connection);
6253 return res;
6254}
6255
6281void
6282dbus_connection_set_max_received_size (DBusConnection *connection,
6283 long size)
6284{
6285 _dbus_return_if_fail (connection != NULL);
6286
6287 CONNECTION_LOCK (connection);
6288 _dbus_transport_set_max_received_size (connection->transport,
6289 size);
6290 CONNECTION_UNLOCK (connection);
6291}
6292
6299long
6300dbus_connection_get_max_received_size (DBusConnection *connection)
6301{
6302 long res;
6303
6304 _dbus_return_val_if_fail (connection != NULL, 0);
6305
6306 CONNECTION_LOCK (connection);
6307 res = _dbus_transport_get_max_received_size (connection->transport);
6308 CONNECTION_UNLOCK (connection);
6309 return res;
6310}
6311
6323void
6324dbus_connection_set_max_received_unix_fds (DBusConnection *connection,
6325 long n)
6326{
6327 _dbus_return_if_fail (connection != NULL);
6328
6329 CONNECTION_LOCK (connection);
6330 _dbus_transport_set_max_received_unix_fds (connection->transport,
6331 n);
6332 CONNECTION_UNLOCK (connection);
6333}
6334
6341long
6342dbus_connection_get_max_received_unix_fds (DBusConnection *connection)
6343{
6344 long res;
6345
6346 _dbus_return_val_if_fail (connection != NULL, 0);
6347
6348 CONNECTION_LOCK (connection);
6349 res = _dbus_transport_get_max_received_unix_fds (connection->transport);
6350 CONNECTION_UNLOCK (connection);
6351 return res;
6352}
6353
6364long
6365dbus_connection_get_outgoing_size (DBusConnection *connection)
6366{
6367 long res;
6368
6369 _dbus_return_val_if_fail (connection != NULL, 0);
6370
6371 CONNECTION_LOCK (connection);
6372 res = _dbus_counter_get_size_value (connection->outgoing_counter);
6373 CONNECTION_UNLOCK (connection);
6374 return res;
6375}
6376
6377#ifdef DBUS_ENABLE_STATS
6378void
6379_dbus_connection_get_stats (DBusConnection *connection,
6380 dbus_uint32_t *in_messages,
6381 dbus_uint32_t *in_bytes,
6382 dbus_uint32_t *in_fds,
6383 dbus_uint32_t *in_peak_bytes,
6384 dbus_uint32_t *in_peak_fds,
6385 dbus_uint32_t *out_messages,
6386 dbus_uint32_t *out_bytes,
6387 dbus_uint32_t *out_fds,
6388 dbus_uint32_t *out_peak_bytes,
6389 dbus_uint32_t *out_peak_fds)
6390{
6391 CONNECTION_LOCK (connection);
6392
6393 if (in_messages != NULL)
6394 *in_messages = connection->n_incoming;
6395
6396 _dbus_transport_get_stats (connection->transport,
6397 in_bytes, in_fds, in_peak_bytes, in_peak_fds);
6398
6399 if (out_messages != NULL)
6400 *out_messages = connection->n_outgoing;
6401
6402 if (out_bytes != NULL)
6403 *out_bytes = _dbus_counter_get_size_value (connection->outgoing_counter);
6404
6405 if (out_fds != NULL)
6406 *out_fds = _dbus_counter_get_unix_fd_value (connection->outgoing_counter);
6407
6408 if (out_peak_bytes != NULL)
6409 *out_peak_bytes = _dbus_counter_get_peak_size_value (connection->outgoing_counter);
6410
6411 if (out_peak_fds != NULL)
6412 *out_peak_fds = _dbus_counter_get_peak_unix_fd_value (connection->outgoing_counter);
6413
6414 CONNECTION_UNLOCK (connection);
6415}
6416#endif /* DBUS_ENABLE_STATS */
6417
6425long
6426dbus_connection_get_outgoing_unix_fds (DBusConnection *connection)
6427{
6428 long res;
6429
6430 _dbus_return_val_if_fail (connection != NULL, 0);
6431
6432 CONNECTION_LOCK (connection);
6433 res = _dbus_counter_get_unix_fd_value (connection->outgoing_counter);
6434 CONNECTION_UNLOCK (connection);
6435 return res;
6436}
6437
6438#ifdef DBUS_ENABLE_EMBEDDED_TESTS
6445const char*
6446_dbus_connection_get_address (DBusConnection *connection)
6447{
6448 return _dbus_transport_get_address (connection->transport);
6449}
6450#endif
6451
dbus_address_entries_free
void dbus_address_entries_free(DBusAddressEntry **entries)
Frees a NULL-terminated array of address entries.
Definition dbus-address.c:194
dbus_parse_address
dbus_bool_t dbus_parse_address(const char *address, DBusAddressEntry ***entry_result, int *array_len, DBusError *error)
Parses an address string of the form:
Definition dbus-address.c:368
dbus_address_entry_get_value
const char * dbus_address_entry_get_value(DBusAddressEntry *entry, const char *key)
Returns a value from a key of an entry.
Definition dbus-address.c:249
_dbus_bus_notify_shared_connection_disconnected_unlocked
void _dbus_bus_notify_shared_connection_disconnected_unlocked(DBusConnection *connection)
Internal function that checks to see if this is a shared connection owned by the bus and if it is unr...
Definition dbus-bus.c:390
_dbus_connection_handle_watch
dbus_bool_t _dbus_connection_handle_watch(DBusWatch *watch, unsigned int condition, void *data)
A callback for use with dbus_watch_new() to create a DBusWatch.
Definition dbus-connection.c:1500
_dbus_connection_toggle_timeout_unlocked
void _dbus_connection_toggle_timeout_unlocked(DBusConnection *connection, DBusTimeout *timeout, dbus_bool_t enabled)
Toggles a timeout and notifies app via connection's DBusTimeoutToggledFunction if available.
Definition dbus-connection.c:909
dbus_connection_has_messages_to_send
dbus_bool_t dbus_connection_has_messages_to_send(DBusConnection *connection)
Checks whether there are messages in the outgoing message queue.
Definition dbus-connection.c:592
_dbus_connection_do_iteration_unlocked
void _dbus_connection_do_iteration_unlocked(DBusConnection *connection, DBusPendingCall *pending, unsigned int flags, int timeout_milliseconds)
Queues incoming messages and sends outgoing messages for this connection, optionally blocking in the ...
Definition dbus-connection.c:1202
_dbus_connection_send_and_unlock
dbus_bool_t _dbus_connection_send_and_unlock(DBusConnection *connection, DBusMessage *message, dbus_uint32_t *client_serial)
Like dbus_connection_send(), but assumes the connection is already locked on function entry,...
Definition dbus-connection.c:2112
_dbus_connection_new_for_transport
DBusConnection * _dbus_connection_new_for_transport(DBusTransport *transport)
Creates a new connection for the given transport.
Definition dbus-connection.c:1253
_dbus_connection_has_messages_to_send_unlocked
dbus_bool_t _dbus_connection_has_messages_to_send_unlocked(DBusConnection *connection)
Checks whether there are messages in the outgoing message queue.
Definition dbus-connection.c:576
DBusWatchRemoveFunction
void(* DBusWatchRemoveFunction)(DBusWatchList *list, DBusWatch *watch)
Function to be called in protected_change_watch() with refcount held.
Definition dbus-connection.c:677
_dbus_connection_unlock
void _dbus_connection_unlock(DBusConnection *connection)
Releases the connection lock.
Definition dbus-connection.c:403
_dbus_connection_lock
void _dbus_connection_lock(DBusConnection *connection)
Acquires the connection lock.
Definition dbus-connection.c:392
_dbus_connection_remove_watch_unlocked
void _dbus_connection_remove_watch_unlocked(DBusConnection *connection, DBusWatch *watch)
Removes a watch using the connection's DBusRemoveWatchFunction if available.
Definition dbus-connection.c:765
_dbus_connection_add_timeout_unlocked
dbus_bool_t _dbus_connection_add_timeout_unlocked(DBusConnection *connection, DBusTimeout *timeout)
Adds a timeout using the connection's DBusAddTimeoutFunction if available.
Definition dbus-connection.c:871
_dbus_connection_toggle_watch_unlocked
void _dbus_connection_toggle_watch_unlocked(DBusConnection *connection, DBusWatch *watch, dbus_bool_t enabled)
Toggles a watch and notifies app via connection's DBusWatchToggledFunction if available.
Definition dbus-connection.c:785
DBusTimeoutToggleFunction
void(* DBusTimeoutToggleFunction)(DBusTimeoutList *list, DBusTimeout *timeout, dbus_bool_t enabled)
Function to be called in protected_change_timeout() with refcount held.
Definition dbus-connection.c:804
DBusTimeoutRemoveFunction
void(* DBusTimeoutRemoveFunction)(DBusTimeoutList *list, DBusTimeout *timeout)
Function to be called in protected_change_timeout() with refcount held.
Definition dbus-connection.c:801
_dbus_connection_add_watch_unlocked
dbus_bool_t _dbus_connection_add_watch_unlocked(DBusConnection *connection, DBusWatch *watch)
Adds a watch using the connection's DBusAddWatchFunction if available.
Definition dbus-connection.c:747
_dbus_connection_remove_pending_call
void _dbus_connection_remove_pending_call(DBusConnection *connection, DBusPendingCall *pending)
Removes a pending call from the connection, such that the pending reply will be ignored.
Definition dbus-connection.c:1048
_dbus_connection_close_if_only_one_ref
void _dbus_connection_close_if_only_one_ref(DBusConnection *connection)
Used internally to handle the semantics of dbus_server_set_new_connection_function().
Definition dbus-connection.c:2160
_dbus_connection_unref_unlocked
void _dbus_connection_unref_unlocked(DBusConnection *connection)
Decrements the reference count of a DBusConnection.
Definition dbus-connection.c:1447
_dbus_connection_get_message_to_send
DBusMessage * _dbus_connection_get_message_to_send(DBusConnection *connection)
Gets the next outgoing message.
Definition dbus-connection.c:613
DBusTimeoutAddFunction
dbus_bool_t(* DBusTimeoutAddFunction)(DBusTimeoutList *list, DBusTimeout *timeout)
Function to be called in protected_change_timeout() with refcount held.
Definition dbus-connection.c:798
_dbus_connection_message_sent_unlocked
void _dbus_connection_message_sent_unlocked(DBusConnection *connection, DBusMessage *message)
Notifies the connection that a message has been sent, so the message can be removed from the outgoing...
Definition dbus-connection.c:629
_dbus_connection_remove_timeout_unlocked
void _dbus_connection_remove_timeout_unlocked(DBusConnection *connection, DBusTimeout *timeout)
Removes a timeout using the connection's DBusRemoveTimeoutFunction if available.
Definition dbus-connection.c:889
_dbus_connection_get_next_client_serial
dbus_uint32_t _dbus_connection_get_next_client_serial(DBusConnection *connection)
Allocate and return the next non-zero serial number for outgoing messages.
Definition dbus-connection.c:1474
DBusWatchToggleFunction
void(* DBusWatchToggleFunction)(DBusWatchList *list, DBusWatch *watch, dbus_bool_t enabled)
Function to be called in protected_change_watch() with refcount held.
Definition dbus-connection.c:680
_dbus_connection_queue_received_message_link
void _dbus_connection_queue_received_message_link(DBusConnection *connection, DBusList *link)
Adds a message-containing list link to the incoming message queue, taking ownership of the link and t...
Definition dbus-connection.c:484
_dbus_connection_get_pending_fds_count
int _dbus_connection_get_pending_fds_count(DBusConnection *connection)
Return how many file descriptors are pending in the loader.
Definition dbus-connection.c:2577
_dbus_connection_set_pending_fds_function
void _dbus_connection_set_pending_fds_function(DBusConnection *connection, DBusPendingFdsChangeFunction callback, void *data)
Register a function to be called whenever the number of pending file descriptors in the loader change...
Definition dbus-connection.c:2590
DBusWatchAddFunction
dbus_bool_t(* DBusWatchAddFunction)(DBusWatchList *list, DBusWatch *watch)
Function to be called in protected_change_watch() with refcount held.
Definition dbus-connection.c:674
_dbus_connection_block_pending_call
void _dbus_connection_block_pending_call(DBusPendingCall *pending)
Blocks until a pending call times out or gets a reply.
Definition dbus-connection.c:2394
_dbus_connection_queue_synthesized_message_link
void _dbus_connection_queue_synthesized_message_link(DBusConnection *connection, DBusList *link)
Adds a link + message to the incoming message queue.
Definition dbus-connection.c:549
_dbus_connection_close_possibly_shared
void _dbus_connection_close_possibly_shared(DBusConnection *connection)
Closes a shared OR private connection, while dbus_connection_close() can only be used on private conn...
Definition dbus-connection.c:1962
_dbus_connection_ref_unlocked
DBusConnection * _dbus_connection_ref_unlocked(DBusConnection *connection)
Increments the reference count of a DBusConnection.
Definition dbus-connection.c:1424
dbus_connection_return_message
void dbus_connection_return_message(DBusConnection *connection, DBusMessage *message)
Used to return a message after peeking at it using dbus_connection_borrow_message().
Definition dbus-connection.c:3917
DBusWatchToggledFunction
void(* DBusWatchToggledFunction)(DBusWatch *watch, void *data)
Called when dbus_watch_get_enabled() may return a different value than it did before.
Definition dbus-connection.h:100
dbus_connection_get_object_path_data
dbus_bool_t dbus_connection_get_object_path_data(DBusConnection *connection, const char *path, void **data_p)
Gets the user data passed to dbus_connection_register_object_path() or dbus_connection_register_fallb...
Definition dbus-connection.c:5968
dbus_connection_set_max_message_size
void dbus_connection_set_max_message_size(DBusConnection *connection, long size)
Specifies the maximum size message this connection is allowed to receive.
Definition dbus-connection.c:6187
dbus_connection_flush
void dbus_connection_flush(DBusConnection *connection)
Blocks until the outgoing message queue is empty.
Definition dbus-connection.c:3657
dbus_connection_get_max_message_unix_fds
long dbus_connection_get_max_message_unix_fds(DBusConnection *connection)
Gets the value set by dbus_connection_set_max_message_unix_fds().
Definition dbus-connection.c:6244
dbus_connection_set_exit_on_disconnect
void dbus_connection_set_exit_on_disconnect(DBusConnection *connection, dbus_bool_t exit_on_disconnect)
Set whether _exit() should be called when the connection receives a disconnect signal.
Definition dbus-connection.c:3160
dbus_connection_get_socket
dbus_bool_t dbus_connection_get_socket(DBusConnection *connection, int *fd)
Gets the underlying Windows or UNIX socket file descriptor of the connection, if any.
Definition dbus-connection.c:5193
dbus_connection_pop_message
DBusMessage * dbus_connection_pop_message(DBusConnection *connection)
Returns the first-received message from the incoming message queue, removing it from the queue.
Definition dbus-connection.c:4107
dbus_connection_get_max_received_unix_fds
long dbus_connection_get_max_received_unix_fds(DBusConnection *connection)
Gets the value set by dbus_connection_set_max_received_unix_fds().
Definition dbus-connection.c:6342
dbus_connection_register_object_path
dbus_bool_t dbus_connection_register_object_path(DBusConnection *connection, const char *path, const DBusObjectPathVTable *vtable, void *user_data)
Registers a handler for a given path in the object hierarchy.
Definition dbus-connection.c:5829
dbus_connection_close
void dbus_connection_close(DBusConnection *connection)
Closes a private connection, so no further data can be sent or received.
Definition dbus-connection.c:2947
dbus_connection_set_max_message_unix_fds
void dbus_connection_set_max_message_unix_fds(DBusConnection *connection, long n)
Specifies the maximum number of unix fds a message on this connection is allowed to receive.
Definition dbus-connection.c:6226
dbus_connection_set_wakeup_main_function
void dbus_connection_set_wakeup_main_function(DBusConnection *connection, DBusWakeupMainFunction wakeup_main_function, void *data, DBusFreeFunction free_data_function)
Sets the mainloop wakeup function for the connection.
Definition dbus-connection.c:5072
dbus_connection_get_windows_user
dbus_bool_t dbus_connection_get_windows_user(DBusConnection *connection, char **windows_sid_p)
Gets the Windows user SID of the connection if known.
Definition dbus-connection.c:5452
dbus_connection_get_is_authenticated
dbus_bool_t dbus_connection_get_is_authenticated(DBusConnection *connection)
Gets whether the connection was authenticated.
Definition dbus-connection.c:3010
dbus_connection_send_preallocated
void dbus_connection_send_preallocated(DBusConnection *connection, DBusPreallocatedSend *preallocated, DBusMessage *message, dbus_uint32_t *client_serial)
Sends a message using preallocated resources.
Definition dbus-connection.c:3232
dbus_connection_read_write
dbus_bool_t dbus_connection_read_write(DBusConnection *connection, int timeout_milliseconds)
This function is intended for use with applications that don't want to write a main loop and deal wit...
Definition dbus-connection.c:3817
dbus_connection_get_max_received_size
long dbus_connection_get_max_received_size(DBusConnection *connection)
Gets the value set by dbus_connection_set_max_received_size().
Definition dbus-connection.c:6300
dbus_connection_get_unix_fd
dbus_bool_t dbus_connection_get_unix_fd(DBusConnection *connection, int *fd)
Get the UNIX file descriptor of the connection, if any.
Definition dbus-connection.c:5163
DBusDispatchStatusFunction
void(* DBusDispatchStatusFunction)(DBusConnection *connection, DBusDispatchStatus new_status, void *data)
Called when the return value of dbus_connection_get_dispatch_status() may have changed.
Definition dbus-connection.h:131
dbus_connection_can_send_type
dbus_bool_t dbus_connection_can_send_type(DBusConnection *connection, int type)
Tests whether a certain type can be send via the connection.
Definition dbus-connection.c:3120
dbus_connection_list_registered
dbus_bool_t dbus_connection_list_registered(DBusConnection *connection, const char *parent_path, char ***child_entries)
Lists the registered fallback handlers and object path handlers at the given parent_path.
Definition dbus-connection.c:6005
dbus_connection_get_data
void * dbus_connection_get_data(DBusConnection *connection, dbus_int32_t slot)
Retrieves data previously set with dbus_connection_set_data().
Definition dbus-connection.c:6144
dbus_connection_open_private
DBusConnection * dbus_connection_open_private(const char *address, DBusError *error)
Opens a new, dedicated connection to a remote address.
Definition dbus-connection.c:2678
dbus_connection_get_outgoing_size
long dbus_connection_get_outgoing_size(DBusConnection *connection)
Gets the approximate size in bytes of all messages in the outgoing message queue.
Definition dbus-connection.c:6365
dbus_connection_set_dispatch_status_function
void dbus_connection_set_dispatch_status_function(DBusConnection *connection, DBusDispatchStatusFunction function, void *data, DBusFreeFunction free_data_function)
Set a function to be invoked when the dispatch status changes.
Definition dbus-connection.c:5118
dbus_connection_read_write_dispatch
dbus_bool_t dbus_connection_read_write_dispatch(DBusConnection *connection, int timeout_milliseconds)
This function is intended for use with applications that don't want to write a main loop and deal wit...
Definition dbus-connection.c:3785
DBusHandleMessageFunction
DBusHandlerResult(* DBusHandleMessageFunction)(DBusConnection *connection, DBusMessage *message, void *user_data)
Called when a message needs to be handled.
Definition dbus-connection.h:172
dbus_connection_remove_filter
void dbus_connection_remove_filter(DBusConnection *connection, DBusHandleMessageFunction function, void *user_data)
Removes a previously-added message filter.
Definition dbus-connection.c:5690
dbus_connection_get_is_connected
dbus_bool_t dbus_connection_get_is_connected(DBusConnection *connection)
Gets whether the connection is currently open.
Definition dbus-connection.c:2988
dbus_connection_preallocate_send
DBusPreallocatedSend * dbus_connection_preallocate_send(DBusConnection *connection)
Preallocates resources needed to send a message, allowing the message to be sent without the possibil...
Definition dbus-connection.c:3180
DBusAddWatchFunction
dbus_bool_t(* DBusAddWatchFunction)(DBusWatch *watch, void *data)
Called when libdbus needs a new watch to be monitored by the main loop.
Definition dbus-connection.h:94
dbus_connection_unref
void dbus_connection_unref(DBusConnection *connection)
Decrements the reference count of a DBusConnection, and finalizes it if the count reaches zero.
Definition dbus-connection.c:2832
dbus_connection_set_max_received_size
void dbus_connection_set_max_received_size(DBusConnection *connection, long size)
Sets the maximum total number of bytes that can be used for all messages received on this connection.
Definition dbus-connection.c:6282
DBusTimeoutToggledFunction
void(* DBusTimeoutToggledFunction)(DBusTimeout *timeout, void *data)
Called when dbus_timeout_get_enabled() may return a different value than it did before.
Definition dbus-connection.h:120
dbus_connection_dispatch
DBusDispatchStatus dbus_connection_dispatch(DBusConnection *connection)
Processes any incoming data.
Definition dbus-connection.c:4591
dbus_connection_unregister_object_path
dbus_bool_t dbus_connection_unregister_object_path(DBusConnection *connection, const char *path)
Unregisters the handler registered with exactly the given path.
Definition dbus-connection.c:5936
dbus_connection_set_unix_user_function
void dbus_connection_set_unix_user_function(DBusConnection *connection, DBusAllowUnixUserFunction function, void *data, DBusFreeFunction free_data_function)
Sets a predicate function used to determine whether a given user ID is allowed to connect.
Definition dbus-connection.c:5355
dbus_connection_try_register_object_path
dbus_bool_t dbus_connection_try_register_object_path(DBusConnection *connection, const char *path, const DBusObjectPathVTable *vtable, void *user_data, DBusError *error)
Registers a handler for a given path in the object hierarchy.
Definition dbus-connection.c:5799
dbus_connection_steal_borrowed_message
void dbus_connection_steal_borrowed_message(DBusConnection *connection, DBusMessage *message)
Used to keep a message after peeking at it using dbus_connection_borrow_message().
Definition dbus-connection.c:3951
dbus_connection_allocate_data_slot
dbus_bool_t dbus_connection_allocate_data_slot(dbus_int32_t *slot_p)
Allocates an integer ID to be used for storing application-specific data on any DBusConnection.
Definition dbus-connection.c:6047
dbus_connection_set_change_sigpipe
void dbus_connection_set_change_sigpipe(dbus_bool_t will_modify_sigpipe)
This function sets a global flag for whether dbus_connection_new() will set SIGPIPE behavior to SIG_I...
Definition dbus-connection.c:6170
dbus_connection_get_max_message_size
long dbus_connection_get_max_message_size(DBusConnection *connection)
Gets the value set by dbus_connection_set_max_message_size().
Definition dbus-connection.c:6205
dbus_connection_free_data_slot
void dbus_connection_free_data_slot(dbus_int32_t *slot_p)
Deallocates a global ID for connection data slots.
Definition dbus-connection.c:6065
DBusAddTimeoutFunction
dbus_bool_t(* DBusAddTimeoutFunction)(DBusTimeout *timeout, void *data)
Called when libdbus needs a new timeout to be monitored by the main loop.
Definition dbus-connection.h:113
dbus_connection_set_max_received_unix_fds
void dbus_connection_set_max_received_unix_fds(DBusConnection *connection, long n)
Sets the maximum total number of unix fds that can be used for all messages received on this connecti...
Definition dbus-connection.c:6324
dbus_connection_set_data
dbus_bool_t dbus_connection_set_data(DBusConnection *connection, dbus_int32_t slot, void *data, DBusFreeFunction free_data_func)
Stores a pointer on a DBusConnection, along with an optional function to be used for freeing the data...
Definition dbus-connection.c:6095
dbus_connection_get_dispatch_status
DBusDispatchStatus dbus_connection_get_dispatch_status(DBusConnection *connection)
Gets the current state of the incoming message queue.
Definition dbus-connection.c:4394
dbus_connection_send_with_reply_and_block
DBusMessage * dbus_connection_send_with_reply_and_block(DBusConnection *connection, DBusMessage *message, int timeout_milliseconds, DBusError *error)
Sends a message and blocks a certain time period while waiting for a reply.
Definition dbus-connection.c:3551
dbus_connection_try_register_fallback
dbus_bool_t dbus_connection_try_register_fallback(DBusConnection *connection, const char *path, const DBusObjectPathVTable *vtable, void *user_data, DBusError *error)
Registers a fallback handler for a given subsection of the object hierarchy.
Definition dbus-connection.c:5869
dbus_connection_get_adt_audit_session_data
dbus_bool_t dbus_connection_get_adt_audit_session_data(DBusConnection *connection, void **data, dbus_int32_t *data_size)
Gets the ADT audit data of the connection if any.
Definition dbus-connection.c:5309
dbus_connection_borrow_message
DBusMessage * dbus_connection_borrow_message(DBusConnection *connection)
Returns the first-received message from the incoming message queue, leaving it in the queue.
Definition dbus-connection.c:3866
dbus_connection_send_with_reply
dbus_bool_t dbus_connection_send_with_reply(DBusConnection *connection, DBusMessage *message, DBusPendingCall **pending_return, int timeout_milliseconds)
Queues a message to send, as with dbus_connection_send(), but also returns a DBusPendingCall used to ...
Definition dbus-connection.c:3415
dbus_connection_set_windows_user_function
void dbus_connection_set_windows_user_function(DBusConnection *connection, DBusAllowWindowsUserFunction function, void *data, DBusFreeFunction free_data_function)
Sets a predicate function used to determine whether a given user ID is allowed to connect.
Definition dbus-connection.c:5499
dbus_connection_get_is_anonymous
dbus_bool_t dbus_connection_get_is_anonymous(DBusConnection *connection)
Gets whether the connection is not authenticated as a specific user.
Definition dbus-connection.c:3044
dbus_connection_set_timeout_functions
dbus_bool_t dbus_connection_set_timeout_functions(DBusConnection *connection, DBusAddTimeoutFunction add_function, DBusRemoveTimeoutFunction remove_function, DBusTimeoutToggledFunction toggled_function, void *data, DBusFreeFunction free_data_function)
Sets the timeout functions for the connection.
Definition dbus-connection.c:5034
DBusRemoveWatchFunction
void(* DBusRemoveWatchFunction)(DBusWatch *watch, void *data)
Called when libdbus no longer needs a watch to be monitored by the main loop.
Definition dbus-connection.h:106
DBusAllowUnixUserFunction
dbus_bool_t(* DBusAllowUnixUserFunction)(DBusConnection *connection, unsigned long uid, void *data)
Called during authentication to check whether the given UNIX user ID is allowed to connect,...
Definition dbus-connection.h:146
DBusDispatchStatus
DBusDispatchStatus
Indicates the status of incoming data on a DBusConnection.
Definition dbus-connection.h:83
dbus_connection_register_fallback
dbus_bool_t dbus_connection_register_fallback(DBusConnection *connection, const char *path, const DBusObjectPathVTable *vtable, void *user_data)
Registers a fallback handler for a given subsection of the object hierarchy.
Definition dbus-connection.c:5901
dbus_connection_open
DBusConnection * dbus_connection_open(const char *address, DBusError *error)
Gets a connection to a remote address.
Definition dbus-connection.c:2635
dbus_connection_free_preallocated_send
void dbus_connection_free_preallocated_send(DBusConnection *connection, DBusPreallocatedSend *preallocated)
Frees preallocated message-sending resources from dbus_connection_preallocate_send().
Definition dbus-connection.c:3206
dbus_connection_get_outgoing_unix_fds
long dbus_connection_get_outgoing_unix_fds(DBusConnection *connection)
Gets the approximate number of uni fds of all messages in the outgoing message queue.
Definition dbus-connection.c:6426
DBusWakeupMainFunction
void(* DBusWakeupMainFunction)(void *data)
Called when the main loop's thread should be notified that there's now work to do.
Definition dbus-connection.h:138
dbus_connection_set_allow_anonymous
void dbus_connection_set_allow_anonymous(DBusConnection *connection, dbus_bool_t value)
This function must be called on the server side of a connection when the connection is first seen in ...
Definition dbus-connection.c:5546
dbus_connection_add_filter
dbus_bool_t dbus_connection_add_filter(DBusConnection *connection, DBusHandleMessageFunction function, void *user_data, DBusFreeFunction free_data_function)
Adds a message filter.
Definition dbus-connection.c:5638
dbus_connection_send
dbus_bool_t dbus_connection_send(DBusConnection *connection, DBusMessage *message, dbus_uint32_t *serial)
Adds a message to the outgoing message queue.
Definition dbus-connection.c:3317
dbus_connection_ref
DBusConnection * dbus_connection_ref(DBusConnection *connection)
Increments the reference count of a DBusConnection.
Definition dbus-connection.c:2700
dbus_connection_set_builtin_filters_enabled
void dbus_connection_set_builtin_filters_enabled(DBusConnection *connection, dbus_bool_t value)
Enables the builtin filtering of messages.
Definition dbus-connection.c:5578
dbus_connection_get_server_id
char * dbus_connection_get_server_id(DBusConnection *connection)
Gets the ID of the server address we are authenticated to, if this connection is on the client side.
Definition dbus-connection.c:3089
DBusAllowWindowsUserFunction
dbus_bool_t(* DBusAllowWindowsUserFunction)(DBusConnection *connection, const char *user_sid, void *data)
Called during authentication to check whether the given Windows user ID is allowed to connect,...
Definition dbus-connection.h:156
dbus_connection_set_watch_functions
dbus_bool_t dbus_connection_set_watch_functions(DBusConnection *connection, DBusAddWatchFunction add_function, DBusRemoveWatchFunction remove_function, DBusWatchToggledFunction toggled_function, void *data, DBusFreeFunction free_data_function)
Sets the watch functions for the connection.
Definition dbus-connection.c:4971
DBusRemoveTimeoutFunction
void(* DBusRemoveTimeoutFunction)(DBusTimeout *timeout, void *data)
Called when libdbus no longer needs a timeout to be monitored by the main loop.
Definition dbus-connection.h:126
dbus_connection_get_unix_process_id
dbus_bool_t dbus_connection_get_unix_process_id(DBusConnection *connection, unsigned long *pid)
Gets the process ID of the connection if any.
Definition dbus-connection.c:5276
dbus_connection_get_unix_user
dbus_bool_t dbus_connection_get_unix_user(DBusConnection *connection, unsigned long *uid)
Gets the UNIX user ID of the connection if known.
Definition dbus-connection.c:5240
dbus_connection_set_route_peer_messages
void dbus_connection_set_route_peer_messages(DBusConnection *connection, dbus_bool_t value)
Normally DBusConnection automatically handles all messages to the org.freedesktop....
Definition dbus-connection.c:5606
DBUS_DISPATCH_NEED_MEMORY
@ DBUS_DISPATCH_NEED_MEMORY
More memory is needed to continue.
Definition dbus-connection.h:86
DBUS_DISPATCH_COMPLETE
@ DBUS_DISPATCH_COMPLETE
All currently available data has been processed.
Definition dbus-connection.h:85
DBUS_DISPATCH_DATA_REMAINS
@ DBUS_DISPATCH_DATA_REMAINS
There is more data to potentially convert to messages.
Definition dbus-connection.h:84
_dbus_data_slot_allocator_free
void _dbus_data_slot_allocator_free(DBusDataSlotAllocator *allocator, dbus_int32_t *slot_id_p)
Deallocates an ID previously allocated with _dbus_data_slot_allocator_alloc().
Definition dbus-dataslot.c:157
_dbus_data_slot_list_init
void _dbus_data_slot_list_init(DBusDataSlotList *list)
Initializes a slot list.
Definition dbus-dataslot.c:200
_dbus_data_slot_list_free
void _dbus_data_slot_list_free(DBusDataSlotList *list)
Frees the data slot list and all data slots contained in it, calling application-provided free functi...
Definition dbus-dataslot.c:343
_dbus_data_slot_list_get
void * _dbus_data_slot_list_get(DBusDataSlotAllocator *allocator, DBusDataSlotList *list, int slot)
Retrieves data previously set with _dbus_data_slot_list_set_data().
Definition dbus-dataslot.c:288
_dbus_data_slot_list_set
dbus_bool_t _dbus_data_slot_list_set(DBusDataSlotAllocator *allocator, DBusDataSlotList *list, int slot, void *data, DBusFreeFunction free_data_func, DBusFreeFunction *old_free_func, void **old_data)
Stores a pointer in the data slot list, along with an optional function to be used for freeing the da...
Definition dbus-dataslot.c:224
_dbus_data_slot_allocator_alloc
dbus_bool_t _dbus_data_slot_allocator_alloc(DBusDataSlotAllocator *allocator, dbus_int32_t *slot_id_p)
Allocates an integer ID to be used for storing data in a DBusDataSlotList.
Definition dbus-dataslot.c:72
DBUS_ERROR_INIT
#define DBUS_ERROR_INIT
Expands to a suitable initializer for a DBusError on the stack.
Definition dbus-errors.h:64
dbus_move_error
void dbus_move_error(DBusError *src, DBusError *dest)
Moves an error src into dest, freeing src and overwriting dest.
Definition dbus-errors.c:281
dbus_error_has_name
dbus_bool_t dbus_error_has_name(const DBusError *error, const char *name)
Checks whether the error is set and has the given name.
Definition dbus-errors.c:304
dbus_set_error
void dbus_set_error(DBusError *error, const char *name, const char *format,...)
Assigns an error name and message to a DBusError.
Definition dbus-errors.c:356
dbus_error_free
void dbus_error_free(DBusError *error)
Frees an error that's been set (or just initialized), then reinitializes the error as in dbus_error_i...
Definition dbus-errors.c:213
_dbus_hash_table_get_n_entries
int _dbus_hash_table_get_n_entries(DBusHashTable *table)
Gets the number of hash entries in a hash table.
Definition dbus-hash.c:1461
_dbus_hash_iter_get_value
void * _dbus_hash_iter_get_value(DBusHashIter *iter)
Gets the value of the current entry.
Definition dbus-hash.c:620
_dbus_hash_table_insert_int
dbus_bool_t _dbus_hash_table_insert_int(DBusHashTable *table, int key, void *value)
Creates a hash entry with the given key and value.
Definition dbus-hash.c:1312
_dbus_hash_table_insert_string
dbus_bool_t _dbus_hash_table_insert_string(DBusHashTable *table, char *key, void *value)
Creates a hash entry with the given key and value.
Definition dbus-hash.c:1278
_dbus_hash_table_unref
void _dbus_hash_table_unref(DBusHashTable *table)
Decrements the reference count for a hash table, freeing the hash table if the count reaches zero.
Definition dbus-hash.c:368
_dbus_hash_iter_next
dbus_bool_t _dbus_hash_iter_next(DBusHashIter *iter)
Move the hash iterator forward one step, to the next hash entry.
Definition dbus-hash.c:550
_dbus_hash_iter_init
void _dbus_hash_iter_init(DBusHashTable *table, DBusHashIter *iter)
Initializes a hash table iterator.
Definition dbus-hash.c:524
_dbus_hash_table_new
DBusHashTable * _dbus_hash_table_new(DBusHashType type, DBusFreeFunction key_free_function, DBusFreeFunction value_free_function)
Constructs a new hash table.
Definition dbus-hash.c:292
_dbus_hash_table_remove_int
dbus_bool_t _dbus_hash_table_remove_int(DBusHashTable *table, int key)
Removes the hash entry for the given key.
Definition dbus-hash.c:1215
_dbus_hash_table_remove_string
dbus_bool_t _dbus_hash_table_remove_string(DBusHashTable *table, const char *key)
Removes the hash entry for the given key.
Definition dbus-hash.c:1187
_dbus_hash_table_lookup_string
void * _dbus_hash_table_lookup_string(DBusHashTable *table, const char *key)
Looks up the value for a given string in a hash table of type DBUS_HASH_STRING.
Definition dbus-hash.c:1113
_dbus_hash_iter_remove_entry
void _dbus_hash_iter_remove_entry(DBusHashIter *iter)
Removes the current entry from the hash table.
Definition dbus-hash.c:599
_dbus_hash_table_lookup_int
void * _dbus_hash_table_lookup_int(DBusHashTable *table, int key)
Looks up the value for a given integer in a hash table of type DBUS_HASH_INT.
Definition dbus-hash.c:1138
DBUS_HASH_INT
@ DBUS_HASH_INT
Hash keys are integers.
Definition dbus-hash.h:70
DBUS_HASH_STRING
@ DBUS_HASH_STRING
Hash keys are strings.
Definition dbus-hash.h:69
_dbus_assert_not_reached
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called.
Definition dbus-internals.h:164
_dbus_assert
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
Definition dbus-internals.h:153
_DBUS_UNLOCK
#define _DBUS_UNLOCK(name)
Unlocks a global lock.
Definition dbus-internals.h:438
_DBUS_LOCK
#define _DBUS_LOCK(name)
Locks a global lock, initializing it first if necessary.
Definition dbus-internals.h:437
_dbus_warn_check_failed
void _dbus_warn_check_failed(const char *format,...)
Prints a "critical" warning to stderr when an assertion fails; differs from _dbus_warn primarily in t...
Definition dbus-internals.c:310
_dbus_strdup
char * _dbus_strdup(const char *str)
Duplicates a string.
Definition dbus-internals.c:621
_dbus_get_local_machine_uuid_encoded
dbus_bool_t _dbus_get_local_machine_uuid_encoded(DBusString *uuid_str, DBusError *error)
Gets the hex-encoded UUID of the machine this function is executed on.
Definition dbus-internals.c:983
_dbus_warn
void _dbus_warn(const char *format,...)
Prints a warning message to stderr.
Definition dbus-internals.c:278
_DBUS_LOCK_NAME
#define _DBUS_LOCK_NAME(name)
Expands to name of a global lock variable.
Definition dbus-internals.h:436
_dbus_list_get_first_link
DBusList * _dbus_list_get_first_link(DBusList **list)
Gets the first link in the list.
Definition dbus-list.c:597
_dbus_list_copy
dbus_bool_t _dbus_list_copy(DBusList **list, DBusList **dest)
Copies a list.
Definition dbus-list.c:727
_dbus_list_pop_first_link
DBusList * _dbus_list_pop_first_link(DBusList **list)
Removes the first link in the list and returns it.
Definition dbus-list.c:658
_dbus_list_get_last
void * _dbus_list_get_last(DBusList **list)
Gets the last data in the list.
Definition dbus-list.c:626
_dbus_list_remove
dbus_bool_t _dbus_list_remove(DBusList **list, void *data)
Removes a value from the list.
Definition dbus-list.c:418
_dbus_list_append_link
void _dbus_list_append_link(DBusList **list, DBusList *link)
Appends a link to the list.
Definition dbus-list.c:318
_dbus_list_clear_full
void _dbus_list_clear_full(DBusList **list, DBusFreeFunction function)
Free every link and every element in the list.
Definition dbus-list.c:570
_dbus_list_remove_link
void _dbus_list_remove_link(DBusList **list, DBusList *link)
Removes a link from the list.
Definition dbus-list.c:530
_dbus_list_get_first
void * _dbus_list_get_first(DBusList **list)
Gets the first data in the list.
Definition dbus-list.c:642
_dbus_list_get_last_link
DBusList * _dbus_list_get_last_link(DBusList **list)
Gets the last link in the list.
Definition dbus-list.c:610
_dbus_list_unlink
void _dbus_list_unlink(DBusList **list, DBusList *link)
Removes the given link from the list, but doesn't free it.
Definition dbus-list.c:502
_dbus_list_get_prev_link
#define _dbus_list_get_prev_link(list, link)
Gets the previous link in the list, or NULL if there are no more links.
Definition dbus-list.h:122
_dbus_list_free_link
void _dbus_list_free_link(DBusList *link)
Frees a linked list node allocated with _dbus_list_alloc_link.
Definition dbus-list.c:257
_dbus_list_pop_first
void * _dbus_list_pop_first(DBusList **list)
Removes the first value in the list and returns it.
Definition dbus-list.c:679
_dbus_list_foreach
void _dbus_list_foreach(DBusList **list, DBusForeachFunction function, void *data)
Calls the given function for each element in the list.
Definition dbus-list.c:789
_dbus_list_clear
void _dbus_list_clear(DBusList **list)
Frees all links in the list and sets the list head to NULL.
Definition dbus-list.c:545
_dbus_list_prepend_link
void _dbus_list_prepend_link(DBusList **list, DBusList *link)
Prepends a link to the list.
Definition dbus-list.c:336
_dbus_list_prepend
dbus_bool_t _dbus_list_prepend(DBusList **list, void *data)
Prepends a value to the list.
Definition dbus-list.c:295
_dbus_list_alloc_link
DBusList * _dbus_list_alloc_link(void *data)
Allocates a linked list node.
Definition dbus-list.c:245
_dbus_list_append
dbus_bool_t _dbus_list_append(DBusList **list, void *data)
Appends a value to the list.
Definition dbus-list.c:273
_dbus_list_get_next_link
#define _dbus_list_get_next_link(list, link)
Gets the next link in the list, or NULL if there are no more links.
Definition dbus-list.h:121
NULL
#define NULL
A null pointer, defined appropriately for C or C++.
Definition dbus-macros.h:51
TRUE
#define TRUE
Expands to "1".
Definition dbus-macros.h:41
FALSE
#define FALSE
Expands to "0".
Definition dbus-macros.h:44
_dbus_current_generation
int _dbus_current_generation
_dbus_current_generation is used to track each time that dbus_shutdown() is called,...
Definition dbus-memory.c:790
_dbus_register_shutdown_func
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_register_shutdown_func(DBusShutdownFunction function, void *data)
Register a cleanup function to be called exactly once the next time dbus_shutdown() is called.
Definition dbus-memory.c:819
dbus_free
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
Definition dbus-memory.c:710
dbus_new
#define dbus_new(type, count)
Safe macro for using dbus_malloc().
Definition dbus-memory.h:59
DBusFreeFunction
void(* DBusFreeFunction)(void *memory)
The type of a function which frees a block of memory.
Definition dbus-memory.h:65
dbus_new0
#define dbus_new0(type, count)
Safe macro for using dbus_malloc0().
Definition dbus-memory.h:60
dbus_free_string_array
void dbus_free_string_array(char **str_array)
Frees a NULL-terminated array of strings.
Definition dbus-memory.c:758
dbus_message_set_serial
void dbus_message_set_serial(DBusMessage *message, dbus_uint32_t serial)
Sets the serial number of a message.
Definition dbus-message.c:301
dbus_message_lock
void dbus_message_lock(DBusMessage *message)
Locks a message.
Definition dbus-message.c:431
dbus_message_type_to_string
const char * dbus_message_type_to_string(int type)
Utility function to convert a D-Bus message type into a machine-readable string (not translated).
Definition dbus-message.c:5081
_dbus_message_remove_counter
void _dbus_message_remove_counter(DBusMessage *message, DBusCounter *counter)
Removes a counter tracking the size/unix fds of this message, and decrements the counter by the size/...
Definition dbus-message.c:399
_dbus_message_add_counter_link
void _dbus_message_add_counter_link(DBusMessage *message, DBusList *link)
Adds a counter to be incremented immediately with the size/unix fds of this message,...
Definition dbus-message.c:327
dbus_message_has_interface
dbus_bool_t dbus_message_has_interface(DBusMessage *message, const char *iface)
Checks if the message has an interface.
Definition dbus-message.c:3512
dbus_message_set_no_reply
void dbus_message_set_no_reply(DBusMessage *message, dbus_bool_t no_reply)
Sets a flag indicating that the message does not want a reply; if this flag is set,...
Definition dbus-message.c:3247
dbus_message_iter_append_basic
dbus_bool_t dbus_message_iter_append_basic(DBusMessageIter *iter, int type, const void *value)
Appends a basic-typed value to the message.
Definition dbus-message.c:2771
dbus_message_get_path
const char * dbus_message_get_path(DBusMessage *message)
Gets the object path this message is being sent to (for DBUS_MESSAGE_TYPE_METHOD_CALL) or being emitt...
Definition dbus-message.c:3359
dbus_message_get_interface
const char * dbus_message_get_interface(DBusMessage *message)
Gets the interface this message is being sent to (for DBUS_MESSAGE_TYPE_METHOD_CALL) or being emitted...
Definition dbus-message.c:3490
dbus_message_new_error
DBusMessage * dbus_message_new_error(DBusMessage *reply_to, const char *error_name, const char *error_message)
Creates a new message that is an error reply to another message.
Definition dbus-message.c:1515
dbus_message_get_serial
dbus_uint32_t dbus_message_get_serial(DBusMessage *message)
Returns the serial of a message or 0 if none has been specified.
Definition dbus-message.c:1168
dbus_message_get_type
int dbus_message_get_type(DBusMessage *message)
Gets the type of a message.
Definition dbus-message.c:1767
dbus_message_append_args
dbus_bool_t dbus_message_append_args(DBusMessage *message, int first_arg_type,...)
Appends fields to a message given a variable argument list.
Definition dbus-message.c:1843
dbus_message_new_signal
DBusMessage * dbus_message_new_signal(const char *path, const char *iface, const char *name)
Constructs a new message representing a signal emission.
Definition dbus-message.c:1469
dbus_message_ref
DBusMessage * dbus_message_ref(DBusMessage *message)
Increments the reference count of a DBusMessage.
Definition dbus-message.c:1712
dbus_message_set_error_name
dbus_bool_t dbus_message_set_error_name(DBusMessage *message, const char *error_name)
Sets the name of the error (DBUS_MESSAGE_TYPE_ERROR).
Definition dbus-message.c:3634
dbus_message_get_reply_serial
dbus_uint32_t dbus_message_get_reply_serial(DBusMessage *message)
Returns the serial that the message is a reply to or 0 if none.
Definition dbus-message.c:1208
dbus_message_new_method_return
DBusMessage * dbus_message_new_method_return(DBusMessage *method_call)
Constructs a message that is a reply to a method call.
Definition dbus-message.c:1418
dbus_message_get_destination
const char * dbus_message_get_destination(DBusMessage *message)
Gets the destination of a message or NULL if there is none set.
Definition dbus-message.c:3713
dbus_message_unref
void dbus_message_unref(DBusMessage *message)
Decrements the reference count of a DBusMessage, freeing the message if the count reaches 0.
Definition dbus-message.c:1735
dbus_message_new
DBusMessage * dbus_message_new(int message_type)
Constructs a new message of the given message type.
Definition dbus-message.c:1334
dbus_set_error_from_message
dbus_bool_t dbus_set_error_from_message(DBusError *error, DBusMessage *message)
Sets a DBusError based on the contents of the given message.
Definition dbus-message.c:4059
dbus_message_is_method_call
dbus_bool_t dbus_message_is_method_call(DBusMessage *message, const char *iface, const char *method)
Checks whether the message is a method call with the given interface and member fields.
Definition dbus-message.c:3865
dbus_message_set_reply_serial
dbus_bool_t dbus_message_set_reply_serial(DBusMessage *message, dbus_uint32_t reply_serial)
Sets the reply serial of a message (the serial of the message this is a reply to).
Definition dbus-message.c:1184
dbus_message_is_signal
dbus_bool_t dbus_message_is_signal(DBusMessage *message, const char *iface, const char *signal_name)
Checks whether the message is a signal with the given interface and member fields.
Definition dbus-message.c:3893
dbus_message_get_signature
const char * dbus_message_get_signature(DBusMessage *message)
Gets the type signature of the message, i.e.
Definition dbus-message.c:3806
dbus_message_get_member
const char * dbus_message_get_member(DBusMessage *message)
Gets the interface member being invoked (DBUS_MESSAGE_TYPE_METHOD_CALL) or emitted (DBUS_MESSAGE_TYPE...
Definition dbus-message.c:3576
dbus_message_iter_init_append
void dbus_message_iter_init_append(DBusMessage *message, DBusMessageIter *iter)
Initializes a DBusMessageIter for appending arguments to the end of a message.
Definition dbus-message.c:2533
_dbus_object_tree_free_all_unlocked
void _dbus_object_tree_free_all_unlocked(DBusObjectTree *tree)
Free all the handlers in the tree.
Definition dbus-object-tree.c:723
_dbus_object_tree_unregister_and_unlock
void _dbus_object_tree_unregister_and_unlock(DBusObjectTree *tree, const char **path)
Unregisters an object subtree that was registered with the same path.
Definition dbus-object-tree.c:628
_dbus_object_tree_unref
void _dbus_object_tree_unref(DBusObjectTree *tree)
Decrement the reference count.
Definition dbus-object-tree.c:146
_dbus_object_tree_list_registered_and_unlock
dbus_bool_t _dbus_object_tree_list_registered_and_unlock(DBusObjectTree *tree, const char **parent_path, char ***child_entries)
Lists the registered fallback handlers and object path handlers at the given parent_path.
Definition dbus-object-tree.c:1211
_dbus_decompose_path
dbus_bool_t _dbus_decompose_path(const char *data, int len, char ***path, int *path_len)
Decompose an object path.
Definition dbus-object-tree.c:1247
_dbus_object_tree_register
dbus_bool_t _dbus_object_tree_register(DBusObjectTree *tree, dbus_bool_t fallback, const char **path, const DBusObjectPathVTable *vtable, void *user_data, DBusError *error)
Registers a new subtree in the global object tree.
Definition dbus-object-tree.c:396
_dbus_object_tree_get_user_data_unlocked
void * _dbus_object_tree_get_user_data_unlocked(DBusObjectTree *tree, const char **path)
Looks up the data passed to _dbus_object_tree_register() for a handler at the given path.
Definition dbus-object-tree.c:1080
_dbus_object_tree_dispatch_and_unlock
DBusHandlerResult _dbus_object_tree_dispatch_and_unlock(DBusObjectTree *tree, DBusMessage *message, dbus_bool_t *found_object)
Tries to dispatch a message by directing it to handler for the object path listed in the message head...
Definition dbus-object-tree.c:908
_dbus_object_tree_new
DBusObjectTree * _dbus_object_tree_new(DBusConnection *connection)
Creates a new object tree, representing a mapping from paths to handler vtables.
Definition dbus-object-tree.c:95
_dbus_pending_call_finish_completion
void _dbus_pending_call_finish_completion(DBusPendingCall *pending)
Call the notifier function for the pending call.
Definition dbus-pending-call.c:235
_dbus_pending_call_get_connection_and_lock
DBusConnection * _dbus_pending_call_get_connection_and_lock(DBusPendingCall *pending)
Gets the connection associated with this pending call.
Definition dbus-pending-call.c:352
_dbus_pending_call_ref_unlocked
DBUS_PRIVATE_EXPORT DBusPendingCall * _dbus_pending_call_ref_unlocked(DBusPendingCall *pending)
Increments the reference count on a pending call, while the lock on its connection is already held.
Definition dbus-pending-call.c:423
_dbus_pending_call_queue_timeout_error_unlocked
void _dbus_pending_call_queue_timeout_error_unlocked(DBusPendingCall *pending, DBusConnection *connection)
If the pending call hasn't been timed out, add its timeout error reply to the connection's incoming m...
Definition dbus-pending-call.c:257
_dbus_pending_call_unref_and_unlock
DBUS_PRIVATE_EXPORT void _dbus_pending_call_unref_and_unlock(DBusPendingCall *pending)
Decrements the reference count on a pending call, freeing it if the count reaches 0.
Definition dbus-pending-call.c:486
_dbus_pending_call_get_completed_unlocked
dbus_bool_t _dbus_pending_call_get_completed_unlocked(DBusPendingCall *pending)
Checks whether the pending call has received a reply yet, or not.
Definition dbus-pending-call.c:509
_dbus_pending_call_set_reply_unlocked
void _dbus_pending_call_set_reply_unlocked(DBusPendingCall *pending, DBusMessage *message)
Sets the reply of a pending call with the given message, or if the message is NULL,...
Definition dbus-pending-call.c:183
_dbus_pending_call_new_unlocked
DBUS_PRIVATE_EXPORT DBusPendingCall * _dbus_pending_call_new_unlocked(DBusConnection *connection, int timeout_milliseconds, DBusTimeoutHandler timeout_handler)
Creates a new pending reply object.
Definition dbus-pending-call.c:120
_dbus_pending_call_set_timeout_error_unlocked
dbus_bool_t _dbus_pending_call_set_timeout_error_unlocked(DBusPendingCall *pending, DBusMessage *message, dbus_uint32_t serial)
Sets the reply message associated with the pending call to a timeout error.
Definition dbus-pending-call.c:383
CONNECTION_LOCK
#define CONNECTION_LOCK(connection)
Internals of DBusPendingCall.
Definition dbus-pending-call.c:55
CONNECTION_UNLOCK
#define CONNECTION_UNLOCK(connection)
shorter and more visible way to write _dbus_connection_unlock()
Definition dbus-pending-call.c:59
_dbus_pending_call_start_completion_unlocked
void _dbus_pending_call_start_completion_unlocked(DBusPendingCall *pending)
Sets the pending call to completed.
Definition dbus-pending-call.c:218
_dbus_pending_call_is_timeout_added_unlocked
dbus_bool_t _dbus_pending_call_is_timeout_added_unlocked(DBusPendingCall *pending)
Checks to see if a timeout has been added.
Definition dbus-pending-call.c:277
_dbus_pending_call_get_reply_serial_unlocked
dbus_uint32_t _dbus_pending_call_get_reply_serial_unlocked(DBusPendingCall *pending)
Gets the reply's serial number.
Definition dbus-pending-call.c:322
_dbus_pending_call_get_connection_unlocked
DBusConnection * _dbus_pending_call_get_connection_unlocked(DBusPendingCall *pending)
Gets the connection associated with this pending call.
Definition dbus-pending-call.c:367
_dbus_pending_call_get_timeout_unlocked
DBusTimeout * _dbus_pending_call_get_timeout_unlocked(DBusPendingCall *pending)
Retrives the timeout.
Definition dbus-pending-call.c:308
_dbus_pending_call_set_timeout_added_unlocked
void _dbus_pending_call_set_timeout_added_unlocked(DBusPendingCall *pending, dbus_bool_t is_added)
Sets wether the timeout has been added.
Definition dbus-pending-call.c:292
dbus_pending_call_ref
DBusPendingCall * dbus_pending_call_ref(DBusPendingCall *pending)
Increments the reference count on a pending call.
Definition dbus-pending-call.c:606
dbus_pending_call_steal_reply
DBusMessage * dbus_pending_call_steal_reply(DBusPendingCall *pending)
Gets the reply, or returns NULL if none has been received yet.
Definition dbus-pending-call.c:731
dbus_pending_call_block
void dbus_pending_call_block(DBusPendingCall *pending)
Block until the pending call is completed.
Definition dbus-pending-call.c:766
dbus_pending_call_get_completed
dbus_bool_t dbus_pending_call_get_completed(DBusPendingCall *pending)
Checks whether the pending call has received a reply yet, or not.
Definition dbus-pending-call.c:708
dbus_pending_call_unref
void dbus_pending_call_unref(DBusPendingCall *pending)
Decrements the reference count on a pending call, freeing it if the count reaches 0.
Definition dbus-pending-call.c:626
DBUS_MESSAGE_TYPE_METHOD_CALL
#define DBUS_MESSAGE_TYPE_METHOD_CALL
Message type of a method call message, see dbus_message_get_type()
Definition dbus-protocol.h:236
DBUS_MESSAGE_TYPE_ERROR
#define DBUS_MESSAGE_TYPE_ERROR
Message type of an error reply message, see dbus_message_get_type()
Definition dbus-protocol.h:240
DBUS_ERROR_UNKNOWN_METHOD
#define DBUS_ERROR_UNKNOWN_METHOD
Method name you invoked isn't known by the object you invoked it on.
Definition dbus-protocol.h:403
DBUS_TYPE_UNIX_FD
#define DBUS_TYPE_UNIX_FD
Type code marking a unix file descriptor.
Definition dbus-protocol.h:116
DBUS_ERROR_OBJECT_PATH_IN_USE
#define DBUS_ERROR_OBJECT_PATH_IN_USE
There's already an object with the requested object path.
Definition dbus-protocol.h:456
DBUS_MESSAGE_TYPE_SIGNAL
#define DBUS_MESSAGE_TYPE_SIGNAL
Message type of a signal message, see dbus_message_get_type()
Definition dbus-protocol.h:242
DBUS_TYPE_STRING
#define DBUS_TYPE_STRING
Type code marking a UTF-8 encoded, nul-terminated Unicode string.
Definition dbus-protocol.h:104
DBUS_ERROR_UNKNOWN_OBJECT
#define DBUS_ERROR_UNKNOWN_OBJECT
Object you invoked a method on isn't known.
Definition dbus-protocol.h:405
DBUS_TYPE_INVALID
#define DBUS_TYPE_INVALID
Type code that is never equal to a legitimate type code.
Definition dbus-protocol.h:62
DBUS_ERROR_FAILED
#define DBUS_ERROR_FAILED
A generic error; "something went wrong" - see the error message for more.
Definition dbus-protocol.h:361
DBUS_ERROR_NO_MEMORY
#define DBUS_ERROR_NO_MEMORY
There was not enough memory to complete an operation.
Definition dbus-protocol.h:363
DBUS_ERROR_DISCONNECTED
#define DBUS_ERROR_DISCONNECTED
The connection is disconnected and you're trying to use it.
Definition dbus-protocol.h:395
_dbus_counter_new
DBusCounter * _dbus_counter_new(void)
Creates a new DBusCounter.
Definition dbus-resources.c:91
_dbus_counter_get_unix_fd_value
long _dbus_counter_get_unix_fd_value(DBusCounter *counter)
Gets the current value of the unix fd counter.
Definition dbus-resources.c:292
_dbus_counter_unref
void _dbus_counter_unref(DBusCounter *counter)
Decrements refcount of the counter and possibly finalizes the counter.
Definition dbus-resources.c:138
_dbus_counter_get_size_value
long _dbus_counter_get_size_value(DBusCounter *counter)
Gets the current value of the size counter.
Definition dbus-resources.c:276
_dbus_counter_ref
DBusCounter * _dbus_counter_ref(DBusCounter *counter)
Increments refcount of the counter.
Definition dbus-resources.c:118
DBusHandlerResult
DBusHandlerResult
Results that a message handler can return.
Definition dbus-shared.h:69
DBUS_PATH_LOCAL
#define DBUS_PATH_LOCAL
The object path used in local/in-process-generated messages.
Definition dbus-shared.h:84
DBUS_INTERFACE_LOCAL
#define DBUS_INTERFACE_LOCAL
This is a special interface whose methods can only be invoked by the local implementation (messages f...
Definition dbus-shared.h:107
DBUS_INTERFACE_PEER
#define DBUS_INTERFACE_PEER
The interface supported by most dbus peers.
Definition dbus-shared.h:101
DBUS_HANDLER_RESULT_NEED_MEMORY
@ DBUS_HANDLER_RESULT_NEED_MEMORY
Need more memory in order to return DBUS_HANDLER_RESULT_HANDLED or DBUS_HANDLER_RESULT_NOT_YET_HANDLE...
Definition dbus-shared.h:72
DBUS_HANDLER_RESULT_HANDLED
@ DBUS_HANDLER_RESULT_HANDLED
Message has had its effect - no need to run more handlers.
Definition dbus-shared.h:70
DBUS_HANDLER_RESULT_NOT_YET_HANDLED
@ DBUS_HANDLER_RESULT_NOT_YET_HANDLED
Message has not had any effect - see if other handlers want it.
Definition dbus-shared.h:71
dbus_type_is_valid
dbus_bool_t dbus_type_is_valid(int typecode)
Return TRUE if the argument is a valid typecode.
Definition dbus-signature.c:389
_dbus_string_init
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
Definition dbus-string.c:182
_dbus_string_free
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init(), and fills it with the same contents as _DBUS_STRING_IN...
Definition dbus-string.c:278
_dbus_string_append_printf
dbus_bool_t _dbus_string_append_printf(DBusString *str, const char *format,...)
Appends a printf-style formatted string to the DBusString.
Definition dbus-string.c:1147
_dbus_get_monotonic_time
void _dbus_get_monotonic_time(dbus_int64_t *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
Definition dbus-sysdeps-unix.c:3381
_dbus_exit
void _dbus_exit(int code)
Exit the process, returning the given value.
Definition dbus-sysdeps-unix.c:3641
_dbus_atomic_set_nonzero
void _dbus_atomic_set_nonzero(DBusAtomic *atomic)
Atomically set the value of an integer to something nonzero.
Definition dbus-sysdeps-unix.c:3279
_dbus_atomic_dec
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
Definition dbus-sysdeps-unix.c:3205
_dbus_atomic_get
dbus_int32_t _dbus_atomic_get(DBusAtomic *atomic)
Atomically get the value of an integer.
Definition dbus-sysdeps-unix.c:3233
_dbus_disable_sigpipe
void _dbus_disable_sigpipe(void)
signal (SIGPIPE, SIG_IGN);
Definition dbus-sysdeps-unix.c:3670
_dbus_sleep_milliseconds
void _dbus_sleep_milliseconds(int milliseconds)
Sleeps the given number of milliseconds.
Definition dbus-sysdeps-unix.c:3542
_dbus_atomic_set_zero
void _dbus_atomic_set_zero(DBusAtomic *atomic)
Atomically set the value of an integer to 0.
Definition dbus-sysdeps-unix.c:3258
_dbus_atomic_inc
dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
Definition dbus-sysdeps-unix.c:3178
_dbus_rmutex_new_at_location
void _dbus_rmutex_new_at_location(DBusRMutex **location_p)
Creates a new mutex or creates a no-op mutex if threads are not initialized.
Definition dbus-threads.c:56
_dbus_cmutex_free_at_location
void _dbus_cmutex_free_at_location(DBusCMutex **location_p)
Frees a DBusCMutex; does nothing if passed a NULL pointer.
Definition dbus-threads.c:110
_dbus_condvar_free_at_location
void _dbus_condvar_free_at_location(DBusCondVar **location_p)
Frees a condition variable; does nothing if passed a NULL pointer.
Definition dbus-threads.c:227
_dbus_rmutex_unlock
DBUS_PRIVATE_EXPORT void _dbus_rmutex_unlock(DBusRMutex *mutex)
Unlocks a mutex.
Definition dbus-threads.c:153
_dbus_condvar_wait
void _dbus_condvar_wait(DBusCondVar *cond, DBusCMutex *mutex)
Atomically unlocks the mutex and waits for the conditions variable to be signalled.
Definition dbus-threads.c:243
_dbus_condvar_new_at_location
void _dbus_condvar_new_at_location(DBusCondVar **location_p)
This does the same thing as _dbus_condvar_new.
Definition dbus-threads.c:202
_dbus_cmutex_new_at_location
void _dbus_cmutex_new_at_location(DBusCMutex **location_p)
Creates a new mutex or creates a no-op mutex if threads are not initialized.
Definition dbus-threads.c:80
_dbus_condvar_wake_one
void _dbus_condvar_wake_one(DBusCondVar *cond)
If there are threads waiting on the condition variable, wake up exactly one.
Definition dbus-threads.c:281
_dbus_condvar_wait_timeout
dbus_bool_t _dbus_condvar_wait_timeout(DBusCondVar *cond, DBusCMutex *mutex, int timeout_milliseconds)
Atomically unlocks the mutex and waits for the conditions variable to be signalled,...
Definition dbus-threads.c:264
_dbus_cmutex_lock
void _dbus_cmutex_lock(DBusCMutex *mutex)
Locks a mutex.
Definition dbus-threads.c:139
_dbus_cmutex_unlock
void _dbus_cmutex_unlock(DBusCMutex *mutex)
Unlocks a mutex.
Definition dbus-threads.c:167
_dbus_rmutex_free_at_location
void _dbus_rmutex_free_at_location(DBusRMutex **location_p)
Frees a DBusRMutex; does nothing if passed a NULL pointer.
Definition dbus-threads.c:97
DBusMutex
struct DBusMutex DBusMutex
An opaque mutex type provided by the DBusThreadFunctions implementation installed by dbus_threads_ini...
Definition dbus-threads.h:43
_dbus_timeout_list_add_timeout
dbus_bool_t _dbus_timeout_list_add_timeout(DBusTimeoutList *timeout_list, DBusTimeout *timeout)
Adds a new timeout to the timeout list, invoking the application DBusAddTimeoutFunction if appropriat...
Definition dbus-timeout.c:314
_dbus_timeout_list_free
void _dbus_timeout_list_free(DBusTimeoutList *timeout_list)
Frees a DBusTimeoutList.
Definition dbus-timeout.c:217
_dbus_timeout_list_toggle_timeout
void _dbus_timeout_list_toggle_timeout(DBusTimeoutList *timeout_list, DBusTimeout *timeout, dbus_bool_t enabled)
Sets a timeout to the given enabled state, invoking the application's DBusTimeoutToggledFunction if a...
Definition dbus-timeout.c:366
_dbus_timeout_list_new
DBusTimeoutList * _dbus_timeout_list_new(void)
Creates a new timeout list.
Definition dbus-timeout.c:200
_dbus_timeout_list_set_functions
dbus_bool_t _dbus_timeout_list_set_functions(DBusTimeoutList *timeout_list, DBusAddTimeoutFunction add_function, DBusRemoveTimeoutFunction remove_function, DBusTimeoutToggledFunction toggled_function, void *data, DBusFreeFunction free_data_function)
Sets the timeout functions.
Definition dbus-timeout.c:243
_dbus_timeout_list_remove_timeout
void _dbus_timeout_list_remove_timeout(DBusTimeoutList *timeout_list, DBusTimeout *timeout)
Removes a timeout from the timeout list, invoking the application's DBusRemoveTimeoutFunction if appr...
Definition dbus-timeout.c:344
dbus_timeout_get_interval
DBUS_EXPORT int dbus_timeout_get_interval(DBusTimeout *timeout)
Gets the timeout interval.
Definition dbus-timeout.c:444
_dbus_transport_set_max_message_size
void _dbus_transport_set_max_message_size(DBusTransport *transport, long size)
See dbus_connection_set_max_message_size().
Definition dbus-transport.c:1225
_dbus_transport_set_max_received_size
void _dbus_transport_set_max_received_size(DBusTransport *transport, long size)
See dbus_connection_set_max_received_size().
Definition dbus-transport.c:1275
_dbus_transport_get_dispatch_status
DBusDispatchStatus _dbus_transport_get_dispatch_status(DBusTransport *transport)
Reports our current dispatch status (whether there's buffered data to be queued as messages,...
Definition dbus-transport.c:1127
_dbus_transport_get_pending_fds_count
int _dbus_transport_get_pending_fds_count(DBusTransport *transport)
Return how many file descriptors are pending in the loader.
Definition dbus-transport.c:1590
_dbus_transport_get_adt_audit_session_data
dbus_bool_t _dbus_transport_get_adt_audit_session_data(DBusTransport *transport, void **data, int *data_size)
See dbus_connection_get_adt_audit_session_data().
Definition dbus-transport.c:1403
_dbus_transport_get_windows_user
dbus_bool_t _dbus_transport_get_windows_user(DBusTransport *transport, char **windows_sid_p)
See dbus_connection_get_windows_user().
Definition dbus-transport.c:1505
_dbus_transport_queue_messages
dbus_bool_t _dbus_transport_queue_messages(DBusTransport *transport)
Processes data we've read while handling a watch, potentially converting some of it to messages and q...
Definition dbus-transport.c:1166
_dbus_transport_get_socket_fd
dbus_bool_t _dbus_transport_get_socket_fd(DBusTransport *transport, DBusSocket *fd_p)
Get the socket file descriptor, if any.
Definition dbus-transport.c:969
_dbus_transport_get_address
const char * _dbus_transport_get_address(DBusTransport *transport)
Gets the address of a transport.
Definition dbus-transport.c:874
_dbus_transport_handle_watch
dbus_bool_t _dbus_transport_handle_watch(DBusTransport *transport, DBusWatch *watch, unsigned int condition)
Handles a watch by reading data, writing data, or disconnecting the transport, as appropriate for the...
Definition dbus-transport.c:907
_dbus_transport_ref
DBusTransport * _dbus_transport_ref(DBusTransport *transport)
Increments the reference count for the transport.
Definition dbus-transport.c:469
_dbus_transport_peek_is_authenticated
dbus_bool_t _dbus_transport_peek_is_authenticated(DBusTransport *transport)
Returns TRUE if we have been authenticated.
Definition dbus-transport.c:710
_dbus_transport_set_allow_anonymous
void _dbus_transport_set_allow_anonymous(DBusTransport *transport, dbus_bool_t value)
See dbus_connection_set_allow_anonymous()
Definition dbus-transport.c:1578
_dbus_transport_disconnect
void _dbus_transport_disconnect(DBusTransport *transport)
Closes our end of the connection to a remote application.
Definition dbus-transport.c:511
_dbus_transport_get_max_received_size
long _dbus_transport_get_max_received_size(DBusTransport *transport)
See dbus_connection_get_max_received_size().
Definition dbus-transport.c:1311
_dbus_transport_get_credentials
DBusCredentials * _dbus_transport_get_credentials(DBusTransport *transport)
If the transport has already been authenticated, return its credentials.
Definition dbus-transport.c:1489
_dbus_transport_set_connection
dbus_bool_t _dbus_transport_set_connection(DBusTransport *transport, DBusConnection *connection)
Sets the connection using this transport.
Definition dbus-transport.c:945
_dbus_transport_set_unix_user_function
void _dbus_transport_set_unix_user_function(DBusTransport *transport, DBusAllowUnixUserFunction function, void *data, DBusFreeFunction free_data_function, void **old_data, DBusFreeFunction *old_free_data_function)
See dbus_connection_set_unix_user_function().
Definition dbus-transport.c:1439
_dbus_transport_get_max_message_unix_fds
long _dbus_transport_get_max_message_unix_fds(DBusTransport *transport)
See dbus_connection_get_max_message_unix_fds().
Definition dbus-transport.c:1263
_dbus_transport_set_max_received_unix_fds
void _dbus_transport_set_max_received_unix_fds(DBusTransport *transport, long n)
See dbus_connection_set_max_received_unix_fds().
Definition dbus-transport.c:1293
_dbus_transport_unref
void _dbus_transport_unref(DBusTransport *transport)
Decrements the reference count for the transport.
Definition dbus-transport.c:486
_dbus_transport_can_pass_unix_fd
dbus_bool_t _dbus_transport_can_pass_unix_fd(DBusTransport *transport)
Returns TRUE if the transport supports sending unix fds.
Definition dbus-transport.c:861
_dbus_transport_try_to_authenticate
dbus_bool_t _dbus_transport_try_to_authenticate(DBusTransport *transport)
Returns TRUE if we have been authenticated.
Definition dbus-transport.c:733
_dbus_transport_do_iteration
void _dbus_transport_do_iteration(DBusTransport *transport, unsigned int flags, int timeout_milliseconds)
Performs a single poll()/select() on the transport's file descriptors and then reads/writes data as a...
Definition dbus-transport.c:1002
_dbus_transport_get_max_received_unix_fds
long _dbus_transport_get_max_received_unix_fds(DBusTransport *transport)
See dbus_connection_set_max_received_unix_fds().
Definition dbus-transport.c:1323
_dbus_transport_get_is_connected
dbus_bool_t _dbus_transport_get_is_connected(DBusTransport *transport)
Returns TRUE if the transport has not been disconnected.
Definition dbus-transport.c:536
_dbus_transport_set_max_message_unix_fds
void _dbus_transport_set_max_message_unix_fds(DBusTransport *transport, long n)
See dbus_connection_set_max_message_unix_fds().
Definition dbus-transport.c:1238
_dbus_transport_set_pending_fds_function
void _dbus_transport_set_pending_fds_function(DBusTransport *transport, void(*callback)(void *), void *data)
Register a function to be called whenever the number of pending file descriptors in the loader change...
Definition dbus-transport.c:1603
_dbus_transport_set_windows_user_function
void _dbus_transport_set_windows_user_function(DBusTransport *transport, DBusAllowWindowsUserFunction function, void *data, DBusFreeFunction free_data_function, void **old_data, DBusFreeFunction *old_free_data_function)
See dbus_connection_set_windows_user_function().
Definition dbus-transport.c:1541
_dbus_transport_get_max_message_size
long _dbus_transport_get_max_message_size(DBusTransport *transport)
See dbus_connection_get_max_message_size().
Definition dbus-transport.c:1251
_dbus_transport_get_unix_process_id
dbus_bool_t _dbus_transport_get_unix_process_id(DBusTransport *transport, unsigned long *pid)
See dbus_connection_get_unix_process_id().
Definition dbus-transport.c:1369
_dbus_transport_open
DBusTransport * _dbus_transport_open(DBusAddressEntry *entry, DBusError *error)
Try to open a new transport for the given address entry.
Definition dbus-transport.c:373
_dbus_transport_get_server_id
const char * _dbus_transport_get_server_id(DBusTransport *transport)
Gets the id of the server we are connected to (see dbus_server_get_id()).
Definition dbus-transport.c:887
_dbus_transport_get_is_anonymous
dbus_bool_t _dbus_transport_get_is_anonymous(DBusTransport *transport)
See dbus_connection_get_is_anonymous().
Definition dbus-transport.c:839
_dbus_transport_get_unix_user
dbus_bool_t _dbus_transport_get_unix_user(DBusTransport *transport, unsigned long *uid)
See dbus_connection_get_unix_user().
Definition dbus-transport.c:1336
dbus_uint32_t
unsigned int dbus_uint32_t
A 32-bit unsigned integer on all platforms.
Definition dbus-arch-deps.h:45
dbus_int32_t
int dbus_int32_t
A 32-bit signed integer on all platforms.
Definition dbus-arch-deps.h:44
dbus_bool_t
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
Definition dbus-types.h:37
DBUS_INT64_MODIFIER
#define DBUS_INT64_MODIFIER
A string literal for a length modifier that is appropriate to print the dbus_int64_t and dbus_uint64_...
Definition dbus-arch-deps.h:39
dbus_int64_t
_DBUS_GNUC_EXTENSION typedef long long dbus_int64_t
A 64-bit signed integer.
Definition dbus-arch-deps.h:37
_dbus_watch_list_add_watch
dbus_bool_t _dbus_watch_list_add_watch(DBusWatchList *watch_list, DBusWatch *watch)
Adds a new watch to the watch list, invoking the application DBusAddWatchFunction if appropriate.
Definition dbus-watch.c:383
_dbus_watch_list_toggle_watch
void _dbus_watch_list_toggle_watch(DBusWatchList *watch_list, DBusWatch *watch, dbus_bool_t enabled)
Sets a watch to the given enabled state, invoking the application's DBusWatchToggledFunction if appro...
Definition dbus-watch.c:443
_dbus_watch_list_new
DBusWatchList * _dbus_watch_list_new(void)
Creates a new watch list.
Definition dbus-watch.c:234
_dbus_watch_list_free
void _dbus_watch_list_free(DBusWatchList *watch_list)
Frees a DBusWatchList.
Definition dbus-watch.c:251
_dbus_watch_list_set_functions
dbus_bool_t _dbus_watch_list_set_functions(DBusWatchList *watch_list, DBusAddWatchFunction add_function, DBusRemoveWatchFunction remove_function, DBusWatchToggledFunction toggled_function, void *data, DBusFreeFunction free_data_function)
Sets the watch functions.
Definition dbus-watch.c:297
_dbus_watch_list_remove_watch
void _dbus_watch_list_remove_watch(DBusWatchList *watch_list, DBusWatch *watch)
Removes a watch from the watch list, invoking the application's DBusRemoveWatchFunction if appropriat...
Definition dbus-watch.c:416
DBusAddressEntry
Internals of DBusAddressEntry.
Definition dbus-address.c:49
DBusAtomic
An atomic integer safe to increment or decrement from multiple threads.
Definition dbus-sysdeps.h:340
DBusCMutex
Definition dbus-sysdeps-pthread.c:55
DBusCondVar
Definition dbus-sysdeps-pthread.c:59
DBusConnection
Implementation details of DBusConnection.
Definition dbus-connection.c:259
DBusConnection::dispatch_status_data
void * dispatch_status_data
Application data for dispatch_status_function.
Definition dbus-connection.c:301
DBusConnection::n_outgoing
int n_outgoing
Length of outgoing queue.
Definition dbus-connection.c:277
DBusConnection::slot_list
DBusDataSlotList slot_list
Data stored by allocated integer ID.
Definition dbus-connection.c:289
DBusConnection::dispatch_acquired
dbus_bool_t dispatch_acquired
Someone has dispatch path (can drain incoming queue)
Definition dbus-connection.c:314
DBusConnection::dispatch_cond
DBusCondVar * dispatch_cond
Notify when dispatch_acquired is available.
Definition dbus-connection.c:265
DBusConnection::wakeup_main_function
DBusWakeupMainFunction wakeup_main_function
Function to wake up the mainloop.
Definition dbus-connection.c:296
DBusConnection::exit_on_disconnect
unsigned int exit_on_disconnect
If TRUE, exit after handling disconnect signal.
Definition dbus-connection.c:319
DBusConnection::filter_list
DBusList * filter_list
List of filters.
Definition dbus-connection.c:286
DBusConnection::have_connection_lock
unsigned int have_connection_lock
Used to check locking.
Definition dbus-connection.c:334
DBusConnection::disconnected_message_processed
unsigned int disconnected_message_processed
We did our default handling of the disconnected message, such as closing the connection.
Definition dbus-connection.c:329
DBusConnection::client_serial
dbus_uint32_t client_serial
Client serial.
Definition dbus-connection.c:293
DBusConnection::disconnected_message_arrived
unsigned int disconnected_message_arrived
We popped or are dispatching the disconnected message.
Definition dbus-connection.c:325
DBusConnection::outgoing_counter
DBusCounter * outgoing_counter
Counts size of outgoing messages.
Definition dbus-connection.c:280
DBusConnection::builtin_filters_enabled
unsigned int builtin_filters_enabled
If TRUE, handle org.freedesktop.DBus.Peer messages automatically, whether they have a bus name or not...
Definition dbus-connection.c:321
DBusConnection::io_path_cond
DBusCondVar * io_path_cond
Notify when io_path_acquired is available.
Definition dbus-connection.c:267
DBusConnection::refcount
DBusAtomic refcount
Reference count.
Definition dbus-connection.c:260
DBusConnection::outgoing_messages
DBusList * outgoing_messages
Queue of messages we need to send, send the end of the list first.
Definition dbus-connection.c:269
DBusConnection::free_dispatch_status_data
DBusFreeFunction free_dispatch_status_data
free dispatch_status_data
Definition dbus-connection.c:302
DBusConnection::slot_mutex
DBusRMutex * slot_mutex
Lock on slot_list so overall connection lock need not be taken.
Definition dbus-connection.c:288
DBusConnection::free_wakeup_main_data
DBusFreeFunction free_wakeup_main_data
free wakeup_main_data
Definition dbus-connection.c:298
DBusConnection::transport
DBusTransport * transport
Object that sends/receives messages over network.
Definition dbus-connection.c:282
DBusConnection::mutex
DBusRMutex * mutex
Lock on the entire DBusConnection.
Definition dbus-connection.c:262
DBusConnection::n_incoming
int n_incoming
Length of incoming queue.
Definition dbus-connection.c:278
DBusConnection::io_path_acquired
dbus_bool_t io_path_acquired
Someone has transport io path (can use the transport to read/write messages)
Definition dbus-connection.c:315
DBusConnection::disconnect_message_link
DBusList * disconnect_message_link
Preallocated list node for queueing the disconnection message.
Definition dbus-connection.c:294
DBusConnection::io_path_mutex
DBusCMutex * io_path_mutex
Protects io_path_acquired.
Definition dbus-connection.c:266
DBusConnection::incoming_messages
DBusList * incoming_messages
Queue of messages we have received, end of the list received most recently.
Definition dbus-connection.c:270
DBusConnection::shareable
unsigned int shareable
TRUE if libdbus owns a reference to the connection and can return it from dbus_connection_open() more...
Definition dbus-connection.c:317
DBusConnection::route_peer_messages
unsigned int route_peer_messages
If TRUE, if org.freedesktop.DBus.Peer messages have a bus name, don't handle them automatically.
Definition dbus-connection.c:323
DBusConnection::watches
DBusWatchList * watches
Stores active watches.
Definition dbus-connection.c:283
DBusConnection::wakeup_main_data
void * wakeup_main_data
Application data for wakeup_main_function.
Definition dbus-connection.c:297
DBusConnection::objects
DBusObjectTree * objects
Object path handlers registered with this connection.
Definition dbus-connection.c:306
DBusConnection::server_guid
char * server_guid
GUID of server if we are in shared_connections, NULL if server GUID is unknown or connection is priva...
Definition dbus-connection.c:308
DBusConnection::pending_replies
DBusHashTable * pending_replies
Hash of message serials to DBusPendingCall.
Definition dbus-connection.c:291
DBusConnection::dispatch_mutex
DBusCMutex * dispatch_mutex
Protects dispatch_acquired.
Definition dbus-connection.c:264
DBusConnection::message_borrowed
DBusMessage * message_borrowed
Filled in if the first incoming message has been borrowed; dispatch_acquired will be set by the borro...
Definition dbus-connection.c:273
DBusConnection::timeouts
DBusTimeoutList * timeouts
Stores active timeouts.
Definition dbus-connection.c:284
DBusConnection::last_dispatch_status
DBusDispatchStatus last_dispatch_status
The last dispatch status we reported to the application.
Definition dbus-connection.c:304
DBusConnection::dispatch_status_function
DBusDispatchStatusFunction dispatch_status_function
Function on dispatch status changes.
Definition dbus-connection.c:300
DBusConnection::expired_messages
DBusList * expired_messages
Messages that will be released when we next unlock.
Definition dbus-connection.c:271
DBusCounter
Internals of DBusCounter.
Definition dbus-resources.c:57
DBusCredentials
Definition dbus-credentials.c:60
DBusDataSlotAllocator
An allocator that tracks a set of slot IDs.
Definition dbus-dataslot.h:58
DBusDataSlotList
Data structure that stores the actual user data set at a given slot.
Definition dbus-dataslot.h:72
DBusError
Object representing an exception.
Definition dbus-errors.h:51
DBusError::name
const char * name
public error name field
Definition dbus-errors.h:52
DBusError::message
const char * message
public error message field
Definition dbus-errors.h:53
DBusHashIter
Hash iterator object.
Definition dbus-hash.h:50
DBusHashTable
Internals of DBusHashTable.
Definition dbus-hash.c:175
DBusList
A node in a linked list.
Definition dbus-list.h:37
DBusList::data
void * data
Data stored at this element.
Definition dbus-list.h:40
DBusMessageFilter
Internal struct representing a message filter function.
Definition dbus-connection.c:231
DBusMessageFilter::refcount
DBusAtomic refcount
Reference count.
Definition dbus-connection.c:232
DBusMessageFilter::function
DBusHandleMessageFunction function
Function to call to filter.
Definition dbus-connection.c:233
DBusMessageFilter::user_data
void * user_data
User data for the function.
Definition dbus-connection.c:234
DBusMessageFilter::free_user_data_function
DBusFreeFunction free_user_data_function
Function to free the user data.
Definition dbus-connection.c:235
DBusMessageIter
DBusMessageIter struct; contains no public fields.
Definition dbus-message.h:64
DBusMessage
Internals of DBusMessage.
Definition dbus-message-private.h:102
DBusObjectPathVTable
Virtual table that must be implemented to handle a portion of the object path hierarchy.
Definition dbus-connection.h:391
DBusObjectTree
Internals of DBusObjectTree.
Definition dbus-object-tree.c:61
DBusPendingCall
Implementation details of DBusPendingCall - all fields are private.
Definition dbus-pending-call.c:65
DBusPreallocatedSend
Internals of DBusPreallocatedSend.
Definition dbus-connection.c:243
DBusPreallocatedSend::connection
DBusConnection * connection
Connection we'd send the message to.
Definition dbus-connection.c:244
DBusPreallocatedSend::counter_link
DBusList * counter_link
Preallocated link in the resource counter.
Definition dbus-connection.c:246
DBusPreallocatedSend::queue_link
DBusList * queue_link
Preallocated link in the queue.
Definition dbus-connection.c:245
DBusRMutex
Definition dbus-sysdeps-pthread.c:51
DBusSocket
Socket interface.
Definition dbus-sysdeps.h:185
DBusString
Definition dbus-string.h:47
DBusTimeoutList
DBusTimeoutList implementation details.
Definition dbus-timeout.c:183
DBusTimeout
Internals of DBusTimeout.
Definition dbus-timeout.c:43
DBusTransport
Object representing a transport such as a socket.
Definition dbus-transport-protected.h:83
DBusWatchList
DBusWatchList implementation details.
Definition dbus-watch.c:217
DBusWatch
Implementation of DBusWatch.
Definition dbus-watch.c:43