D-Bus: dbus-connection.c Source File

D-Bus 1.10.22

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 * Licensed under the Academic Free License version 2.1
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 *
22 */
23
24 #include <config.h>
25 #include "dbus-shared.h"
26 #include "dbus-connection.h"
27 #include "dbus-list.h"
28 #include "dbus-timeout.h"
29 #include "dbus-transport.h"
30 #include "dbus-watch.h"
31 #include "dbus-connection-internal.h"
32 #include "dbus-pending-call-internal.h"
33 #include "dbus-list.h"
34 #include "dbus-hash.h"
35 #include "dbus-message-internal.h"
36 #include "dbus-message-private.h"
37 #include "dbus-threads.h"
38 #include "dbus-protocol.h"
39 #include "dbus-dataslot.h"
40 #include "dbus-string.h"
41 #include "dbus-signature.h"
42 #include "dbus-pending-call.h"
43 #include "dbus-object-tree.h"
44 #include "dbus-threads-internal.h"
45 #include "dbus-bus.h"
46 #include "dbus-marshal-basic.h"
47
48 #ifdef DBUS_DISABLE_CHECKS
49 #define TOOK_LOCK_CHECK(connection)
50 #define RELEASING_LOCK_CHECK(connection)
51 #define HAVE_LOCK_CHECK(connection)
52 #else
53 #define TOOK_LOCK_CHECK(connection) do { \
54 _dbus_assert (!(connection)->have_connection_lock); \
55 (connection)->have_connection_lock = TRUE; \
56 } while (0)
57 #define RELEASING_LOCK_CHECK(connection) do { \
58 _dbus_assert ((connection)->have_connection_lock); \
59 (connection)->have_connection_lock = FALSE; \
60 } while (0)
61 #define HAVE_LOCK_CHECK(connection) _dbus_assert ((connection)->have_connection_lock)
62 /* A "DO_NOT_HAVE_LOCK_CHECK" is impossible since we need the lock to check the flag */
63 #endif
64
65 #define TRACE_LOCKS 1
66
67 #define CONNECTION_LOCK(connection) do { \
68 if (TRACE_LOCKS) { _dbus_verbose ("LOCK\n"); } \
69 _dbus_rmutex_lock ((connection)->mutex); \
70 TOOK_LOCK_CHECK (connection); \
71 } while (0)
72
73 #define CONNECTION_UNLOCK(connection) _dbus_connection_unlock (connection)
74
75 #define SLOTS_LOCK(connection) do { \
76 _dbus_rmutex_lock ((connection)->slot_mutex); \
77 } while (0)
78
79 #define SLOTS_UNLOCK(connection) do { \
80 _dbus_rmutex_unlock ((connection)->slot_mutex); \
81 } while (0)
82
83 #define DISPATCH_STATUS_NAME(s) \
84 ((s) == DBUS_DISPATCH_COMPLETE ? "complete" : \
85 (s) == DBUS_DISPATCH_DATA_REMAINS ? "data remains" : \
86 (s) == DBUS_DISPATCH_NEED_MEMORY ? "need memory" : \
87 "???")
88
206 static void
207 _dbus_connection_trace_ref (DBusConnection *connection,
208 int old_refcount,
209 int new_refcount,
210 const char *why)
211 {
212 #ifdef DBUS_ENABLE_VERBOSE_MODE
213 static int enabled = -1;
214
215 _dbus_trace_ref ("DBusConnection", connection, old_refcount, new_refcount,
216 why, "DBUS_CONNECTION_TRACE", &enabled);
217 #endif
218 }
219
223 typedef struct DBusMessageFilter DBusMessageFilter;
224
228 struct DBusMessageFilter
229 {
230 DBusAtomic refcount;
231 DBusHandleMessageFunction function;
232 void *user_data;
233 DBusFreeFunction free_user_data_function;
234 };
235
236
240 struct DBusPreallocatedSend
241 {
242 DBusConnection *connection;
243 DBusList *queue_link;
244 DBusList *counter_link;
245 };
246
247 #if HAVE_DECL_MSG_NOSIGNAL
248 static dbus_bool_t _dbus_modify_sigpipe = FALSE;
249 #else
250 static dbus_bool_t _dbus_modify_sigpipe = TRUE;
251 #endif
252
256 struct DBusConnection
257 {
258 DBusAtomic refcount;
260 DBusRMutex *mutex;
262 DBusCMutex *dispatch_mutex;
263 DBusCondVar *dispatch_cond;
264 DBusCMutex *io_path_mutex;
265 DBusCondVar *io_path_cond;
267 DBusList *outgoing_messages;
268 DBusList *incoming_messages;
269 DBusList *expired_messages;
271 DBusMessage *message_borrowed;
275 int n_outgoing;
276 int n_incoming;
278 DBusCounter *outgoing_counter;
280 DBusTransport *transport;
281 DBusWatchList *watches;
282 DBusTimeoutList *timeouts;
284 DBusList *filter_list;
286 DBusRMutex *slot_mutex;
287 DBusDataSlotList slot_list;
289 DBusHashTable *pending_replies;
291 dbus_uint32_t client_serial;
292 DBusList *disconnect_message_link;
294 DBusWakeupMainFunction wakeup_main_function;
295 void *wakeup_main_data;
296 DBusFreeFunction free_wakeup_main_data;
298 DBusDispatchStatusFunction dispatch_status_function;
299 void *dispatch_status_data;
300 DBusFreeFunction free_dispatch_status_data;
302 DBusDispatchStatus last_dispatch_status;
304 DBusObjectTree *objects;
306 char *server_guid;
308 /* These two MUST be bools and not bitfields, because they are protected by a separate lock
309 * from connection->mutex and all bitfields in a word have to be read/written together.
310 * So you can't have a different lock for different bitfields in the same word.
311 */
312 dbus_bool_t dispatch_acquired;
313 dbus_bool_t io_path_acquired;
315 unsigned int shareable : 1;
317 unsigned int exit_on_disconnect : 1;
319 unsigned int route_peer_messages : 1;
321 unsigned int disconnected_message_arrived : 1;
325 unsigned int disconnected_message_processed : 1;
329 #ifndef DBUS_DISABLE_CHECKS
330 unsigned int have_connection_lock : 1;
331 #endif
332
333 #if defined(DBUS_ENABLE_CHECKS) || defined(DBUS_ENABLE_ASSERT)
334 int generation;
335 #endif
336 };
337
338 static DBusDispatchStatus _dbus_connection_get_dispatch_status_unlocked (DBusConnection *connection);
339 static void _dbus_connection_update_dispatch_status_and_unlock (DBusConnection *connection,
340 DBusDispatchStatus new_status);
341 static void _dbus_connection_last_unref (DBusConnection *connection);
342 static void _dbus_connection_acquire_dispatch (DBusConnection *connection);
343 static void _dbus_connection_release_dispatch (DBusConnection *connection);
344 static DBusDispatchStatus _dbus_connection_flush_unlocked (DBusConnection *connection);
345 static void _dbus_connection_close_possibly_shared_and_unlock (DBusConnection *connection);
346 static dbus_bool_t _dbus_connection_get_is_connected_unlocked (DBusConnection *connection);
347 static dbus_bool_t _dbus_connection_peek_for_reply_unlocked (DBusConnection *connection,
348 dbus_uint32_t client_serial);
349
350 static DBusMessageFilter *
351 _dbus_message_filter_ref (DBusMessageFilter *filter)
352 {
353 #ifdef DBUS_DISABLE_ASSERT
354 _dbus_atomic_inc (&filter->refcount);
355 #else
356 dbus_int32_t old_value;
357
358 old_value = _dbus_atomic_inc (&filter->refcount);
359 _dbus_assert (old_value > 0);
360 #endif
361
362 return filter;
363 }
364
365 static void
366 _dbus_message_filter_unref (DBusMessageFilter *filter)
367 {
368 dbus_int32_t old_value;
369
370 old_value = _dbus_atomic_dec (&filter->refcount);
371 _dbus_assert (old_value > 0);
372
373 if (old_value == 1)
374 {
375 if (filter->free_user_data_function)
376 (* filter->free_user_data_function) (filter->user_data);
377
378 dbus_free (filter);
379 }
380 }
381
387 void
388 _dbus_connection_lock (DBusConnection *connection)
389 {
390 CONNECTION_LOCK (connection);
391 }
392
398 void
399 _dbus_connection_unlock (DBusConnection *connection)
400 {
401 DBusList *expired_messages;
402 DBusList *iter;
403
404 if (TRACE_LOCKS)
405 {
406 _dbus_verbose ("UNLOCK\n");
407 }
408
409 /* If we had messages that expired (fell off the incoming or outgoing
410 * queues) while we were locked, actually release them now */
411 expired_messages = connection->expired_messages;
412 connection->expired_messages = NULL;
413
414 RELEASING_LOCK_CHECK (connection);
415 _dbus_rmutex_unlock (connection->mutex);
416
417 for (iter = _dbus_list_pop_first_link (&expired_messages);
418 iter != NULL;
419 iter = _dbus_list_pop_first_link (&expired_messages))
420 {
421 DBusMessage *message = iter->data;
422
423 dbus_message_unref (message);
424 _dbus_list_free_link (iter);
425 }
426 }
427
435 static void
436 _dbus_connection_wakeup_mainloop (DBusConnection *connection)
437 {
438 if (connection->wakeup_main_function)
439 (*connection->wakeup_main_function) (connection->wakeup_main_data);
440 }
441
442 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
443
455 void
456 _dbus_connection_test_get_locks (DBusConnection *connection,
457 DBusMutex **mutex_loc,
458 DBusMutex **dispatch_mutex_loc,
459 DBusMutex **io_path_mutex_loc,
460 DBusCondVar **dispatch_cond_loc,
461 DBusCondVar **io_path_cond_loc)
462 {
463 *mutex_loc = (DBusMutex *) connection->mutex;
464 *dispatch_mutex_loc = (DBusMutex *) connection->dispatch_mutex;
465 *io_path_mutex_loc = (DBusMutex *) connection->io_path_mutex;
466 *dispatch_cond_loc = connection->dispatch_cond;
467 *io_path_cond_loc = connection->io_path_cond;
468 }
469 #endif
470
479 void
480 _dbus_connection_queue_received_message_link (DBusConnection *connection,
481 DBusList *link)
482 {
483 DBusPendingCall *pending;
484 dbus_uint32_t reply_serial;
485 DBusMessage *message;
486
487 _dbus_assert (_dbus_transport_peek_is_authenticated (connection->transport));
488
489 _dbus_list_append_link (&connection->incoming_messages,
490 link);
491 message = link->data;
492
493 /* If this is a reply we're waiting on, remove timeout for it */
494 reply_serial = dbus_message_get_reply_serial (message);
495 if (reply_serial != 0)
496 {
497 pending = _dbus_hash_table_lookup_int (connection->pending_replies,
498 reply_serial);
499 if (pending != NULL)
500 {
501 if (_dbus_pending_call_is_timeout_added_unlocked (pending))
502 _dbus_connection_remove_timeout_unlocked (connection,
503 _dbus_pending_call_get_timeout_unlocked (pending));
504
505 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
506 }
507 }
508
509
510
511 connection->n_incoming += 1;
512
513 _dbus_connection_wakeup_mainloop (connection);
514
515 _dbus_verbose ("Message %p (%s %s %s %s '%s' reply to %u) added to incoming queue %p, %d incoming\n",
516 message,
517 dbus_message_type_to_string (dbus_message_get_type (message)),
518 dbus_message_get_path (message) ?
519 dbus_message_get_path (message) :
520 "no path",
521 dbus_message_get_interface (message) ?
522 dbus_message_get_interface (message) :
523 "no interface",
524 dbus_message_get_member (message) ?
525 dbus_message_get_member (message) :
526 "no member",
527 dbus_message_get_signature (message),
528 dbus_message_get_reply_serial (message),
529 connection,
530 connection->n_incoming);
531
532 _dbus_message_trace_ref (message, -1, -1,
533 "_dbus_conection_queue_received_message_link");
534 }
535
544 void
545 _dbus_connection_queue_synthesized_message_link (DBusConnection *connection,
546 DBusList *link)
547 {
548 HAVE_LOCK_CHECK (connection);
549
550 _dbus_list_append_link (&connection->incoming_messages, link);
551
552 connection->n_incoming += 1;
553
554 _dbus_connection_wakeup_mainloop (connection);
555
556 _dbus_message_trace_ref (link->data, -1, -1,
557 "_dbus_connection_queue_synthesized_message_link");
558
559 _dbus_verbose ("Synthesized message %p added to incoming queue %p, %d incoming\n",
560 link->data, connection, connection->n_incoming);
561 }
562
563
571 dbus_bool_t
572 _dbus_connection_has_messages_to_send_unlocked (DBusConnection *connection)
573 {
574 HAVE_LOCK_CHECK (connection);
575 return connection->outgoing_messages != NULL;
576 }
577
587 dbus_bool_t
588 dbus_connection_has_messages_to_send (DBusConnection *connection)
589 {
590 dbus_bool_t v;
591
592 _dbus_return_val_if_fail (connection != NULL, FALSE);
593
594 CONNECTION_LOCK (connection);
595 v = _dbus_connection_has_messages_to_send_unlocked (connection);
596 CONNECTION_UNLOCK (connection);
597
598 return v;
599 }
600
608 DBusMessage*
609 _dbus_connection_get_message_to_send (DBusConnection *connection)
610 {
611 HAVE_LOCK_CHECK (connection);
612
613 return _dbus_list_get_last (&connection->outgoing_messages);
614 }
615
624 void
625 _dbus_connection_message_sent_unlocked (DBusConnection *connection,
626 DBusMessage *message)
627 {
628 DBusList *link;
629
630 HAVE_LOCK_CHECK (connection);
631
632 /* This can be called before we even complete authentication, since
633 * it's called on disconnect to clean up the outgoing queue.
634 * It's also called as we successfully send each message.
635 */
636
637 link = _dbus_list_get_last_link (&connection->outgoing_messages);
638 _dbus_assert (link != NULL);
639 _dbus_assert (link->data == message);
640
641 _dbus_list_unlink (&connection->outgoing_messages,
642 link);
643 _dbus_list_prepend_link (&connection->expired_messages, link);
644
645 connection->n_outgoing -= 1;
646
647 _dbus_verbose ("Message %p (%s %s %s %s '%s') removed from outgoing queue %p, %d left to send\n",
648 message,
649 dbus_message_type_to_string (dbus_message_get_type (message)),
650 dbus_message_get_path (message) ?
651 dbus_message_get_path (message) :
652 "no path",
653 dbus_message_get_interface (message) ?
654 dbus_message_get_interface (message) :
655 "no interface",
656 dbus_message_get_member (message) ?
657 dbus_message_get_member (message) :
658 "no member",
659 dbus_message_get_signature (message),
660 connection, connection->n_outgoing);
661
662 /* It's OK that in principle we call the notify function, because for the
663 * outgoing limit, there isn't one */
664 _dbus_message_remove_counter (message, connection->outgoing_counter);
665
666 /* The message will actually be unreffed when we unlock */
667 }
668
670 typedef dbus_bool_t (* DBusWatchAddFunction) (DBusWatchList *list,
671 DBusWatch *watch);
673 typedef void (* DBusWatchRemoveFunction) (DBusWatchList *list,
674 DBusWatch *watch);
676 typedef void (* DBusWatchToggleFunction) (DBusWatchList *list,
677 DBusWatch *watch,
678 dbus_bool_t enabled);
679
680 static dbus_bool_t
681 protected_change_watch (DBusConnection *connection,
682 DBusWatch *watch,
683 DBusWatchAddFunction add_function,
684 DBusWatchRemoveFunction remove_function,
685 DBusWatchToggleFunction toggle_function,
686 dbus_bool_t enabled)
687 {
688 dbus_bool_t retval;
689
690 HAVE_LOCK_CHECK (connection);
691
692 /* The original purpose of protected_change_watch() was to hold a
693 * ref on the connection while dropping the connection lock, then
694 * calling out to the app. This was a broken hack that did not
695 * work, since the connection was in a hosed state (no WatchList
696 * field) while calling out.
697 *
698 * So for now we'll just keep the lock while calling out. This means
699 * apps are not allowed to call DBusConnection methods inside a
700 * watch function or they will deadlock.
701 *
702 * The "real fix" is to use the _and_unlock() pattern found
703 * elsewhere in the code, to defer calling out to the app until
704 * we're about to drop locks and return flow of control to the app
705 * anyway.
706 *
707 * See http://lists.freedesktop.org/archives/dbus/2007-July/thread.html#8144
708 */
709
710 if (connection->watches)
711 {
712 if (add_function)
713 retval = (* add_function) (connection->watches, watch);
714 else if (remove_function)
715 {
716 retval = TRUE;
717 (* remove_function) (connection->watches, watch);
718 }
719 else
720 {
721 retval = TRUE;
722 (* toggle_function) (connection->watches, watch, enabled);
723 }
724 return retval;
725 }
726 else
727 return FALSE;
728 }
729
730
742 dbus_bool_t
743 _dbus_connection_add_watch_unlocked (DBusConnection *connection,
744 DBusWatch *watch)
745 {
746 return protected_change_watch (connection, watch,
747 _dbus_watch_list_add_watch,
748 NULL, NULL, FALSE);
749 }
750
760 void
761 _dbus_connection_remove_watch_unlocked (DBusConnection *connection,
762 DBusWatch *watch)
763 {
764 protected_change_watch (connection, watch,
765 NULL,
766 _dbus_watch_list_remove_watch,
767 NULL, FALSE);
768 }
769
780 void
781 _dbus_connection_toggle_watch_unlocked (DBusConnection *connection,
782 DBusWatch *watch,
783 dbus_bool_t enabled)
784 {
785 _dbus_assert (watch != NULL);
786
787 protected_change_watch (connection, watch,
788 NULL, NULL,
789 _dbus_watch_list_toggle_watch,
790 enabled);
791 }
792
794 typedef dbus_bool_t (* DBusTimeoutAddFunction) (DBusTimeoutList *list,
795 DBusTimeout *timeout);
797 typedef void (* DBusTimeoutRemoveFunction) (DBusTimeoutList *list,
798 DBusTimeout *timeout);
800 typedef void (* DBusTimeoutToggleFunction) (DBusTimeoutList *list,
801 DBusTimeout *timeout,
802 dbus_bool_t enabled);
803
804 static dbus_bool_t
805 protected_change_timeout (DBusConnection *connection,
806 DBusTimeout *timeout,
807 DBusTimeoutAddFunction add_function,
808 DBusTimeoutRemoveFunction remove_function,
809 DBusTimeoutToggleFunction toggle_function,
810 dbus_bool_t enabled)
811 {
812 dbus_bool_t retval;
813
814 HAVE_LOCK_CHECK (connection);
815
816 /* The original purpose of protected_change_timeout() was to hold a
817 * ref on the connection while dropping the connection lock, then
818 * calling out to the app. This was a broken hack that did not
819 * work, since the connection was in a hosed state (no TimeoutList
820 * field) while calling out.
821 *
822 * So for now we'll just keep the lock while calling out. This means
823 * apps are not allowed to call DBusConnection methods inside a
824 * timeout function or they will deadlock.
825 *
826 * The "real fix" is to use the _and_unlock() pattern found
827 * elsewhere in the code, to defer calling out to the app until
828 * we're about to drop locks and return flow of control to the app
829 * anyway.
830 *
831 * See http://lists.freedesktop.org/archives/dbus/2007-July/thread.html#8144
832 */
833
834 if (connection->timeouts)
835 {
836 if (add_function)
837 retval = (* add_function) (connection->timeouts, timeout);
838 else if (remove_function)
839 {
840 retval = TRUE;
841 (* remove_function) (connection->timeouts, timeout);
842 }
843 else
844 {
845 retval = TRUE;
846 (* toggle_function) (connection->timeouts, timeout, enabled);
847 }
848 return retval;
849 }
850 else
851 return FALSE;
852 }
853
866 dbus_bool_t
867 _dbus_connection_add_timeout_unlocked (DBusConnection *connection,
868 DBusTimeout *timeout)
869 {
870 return protected_change_timeout (connection, timeout,
871 _dbus_timeout_list_add_timeout,
872 NULL, NULL, FALSE);
873 }
874
884 void
885 _dbus_connection_remove_timeout_unlocked (DBusConnection *connection,
886 DBusTimeout *timeout)
887 {
888 protected_change_timeout (connection, timeout,
889 NULL,
890 _dbus_timeout_list_remove_timeout,
891 NULL, FALSE);
892 }
893
904 void
905 _dbus_connection_toggle_timeout_unlocked (DBusConnection *connection,
906 DBusTimeout *timeout,
907 dbus_bool_t enabled)
908 {
909 protected_change_timeout (connection, timeout,
910 NULL, NULL,
911 _dbus_timeout_list_toggle_timeout,
912 enabled);
913 }
914
915 static dbus_bool_t
916 _dbus_connection_attach_pending_call_unlocked (DBusConnection *connection,
917 DBusPendingCall *pending)
918 {
919 dbus_uint32_t reply_serial;
920 DBusTimeout *timeout;
921
922 HAVE_LOCK_CHECK (connection);
923
924 reply_serial = _dbus_pending_call_get_reply_serial_unlocked (pending);
925
926 _dbus_assert (reply_serial != 0);
927
928 timeout = _dbus_pending_call_get_timeout_unlocked (pending);
929
930 if (timeout)
931 {
932 if (!_dbus_connection_add_timeout_unlocked (connection, timeout))
933 return FALSE;
934
935 if (!_dbus_hash_table_insert_int (connection->pending_replies,
936 reply_serial,
937 pending))
938 {
939 _dbus_connection_remove_timeout_unlocked (connection, timeout);
940
941 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
942 HAVE_LOCK_CHECK (connection);
943 return FALSE;
944 }
945
946 _dbus_pending_call_set_timeout_added_unlocked (pending, TRUE);
947 }
948 else
949 {
950 if (!_dbus_hash_table_insert_int (connection->pending_replies,
951 reply_serial,
952 pending))
953 {
954 HAVE_LOCK_CHECK (connection);
955 return FALSE;
956 }
957 }
958
959 _dbus_pending_call_ref_unlocked (pending);
960
961 HAVE_LOCK_CHECK (connection);
962
963 return TRUE;
964 }
965
966 static void
967 free_pending_call_on_hash_removal (void *data)
968 {
969 DBusPendingCall *pending;
970 DBusConnection *connection;
971
972 if (data == NULL)
973 return;
974
975 pending = data;
976
977 connection = _dbus_pending_call_get_connection_unlocked (pending);
978
979 HAVE_LOCK_CHECK (connection);
980
981 if (_dbus_pending_call_is_timeout_added_unlocked (pending))
982 {
983 _dbus_connection_remove_timeout_unlocked (connection,
984 _dbus_pending_call_get_timeout_unlocked (pending));
985
986 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
987 }
988
989 /* FIXME 1.0? this is sort of dangerous and undesirable to drop the lock
990 * here, but the pending call finalizer could in principle call out to
991 * application code so we pretty much have to... some larger code reorg
992 * might be needed.
993 */
994 _dbus_connection_ref_unlocked (connection);
995 _dbus_pending_call_unref_and_unlock (pending);
996 CONNECTION_LOCK (connection);
997 _dbus_connection_unref_unlocked (connection);
998 }
999
1000 static void
1001 _dbus_connection_detach_pending_call_unlocked (DBusConnection *connection,
1002 DBusPendingCall *pending)
1003 {
1004 /* This ends up unlocking to call the pending call finalizer, which is unexpected to
1005 * say the least.
1006 */
1007 _dbus_hash_table_remove_int (connection->pending_replies,
1008 _dbus_pending_call_get_reply_serial_unlocked (pending));
1009 }
1010
1011 static void
1012 _dbus_connection_detach_pending_call_and_unlock (DBusConnection *connection,
1013 DBusPendingCall *pending)
1014 {
1015 /* The idea here is to avoid finalizing the pending call
1016 * with the lock held, since there's a destroy notifier
1017 * in pending call that goes out to application code.
1018 *
1019 * There's an extra unlock inside the hash table
1020 * "free pending call" function FIXME...
1021 */
1022 _dbus_pending_call_ref_unlocked (pending);
1023 _dbus_hash_table_remove_int (connection->pending_replies,
1024 _dbus_pending_call_get_reply_serial_unlocked (pending));
1025
1026 if (_dbus_pending_call_is_timeout_added_unlocked (pending))
1027 _dbus_connection_remove_timeout_unlocked (connection,
1028 _dbus_pending_call_get_timeout_unlocked (pending));
1029
1030 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
1031
1032 _dbus_pending_call_unref_and_unlock (pending);
1033 }
1034
1043 void
1044 _dbus_connection_remove_pending_call (DBusConnection *connection,
1045 DBusPendingCall *pending)
1046 {
1047 CONNECTION_LOCK (connection);
1048 _dbus_connection_detach_pending_call_and_unlock (connection, pending);
1049 }
1050
1060 static dbus_bool_t
1061 _dbus_connection_acquire_io_path (DBusConnection *connection,
1062 int timeout_milliseconds)
1063 {
1064 dbus_bool_t we_acquired;
1065
1066 HAVE_LOCK_CHECK (connection);
1067
1068 /* We don't want the connection to vanish */
1069 _dbus_connection_ref_unlocked (connection);
1070
1071 /* We will only touch io_path_acquired which is protected by our mutex */
1072 CONNECTION_UNLOCK (connection);
1073
1074 _dbus_verbose ("locking io_path_mutex\n");
1075 _dbus_cmutex_lock (connection->io_path_mutex);
1076
1077 _dbus_verbose ("start connection->io_path_acquired = %d timeout = %d\n",
1078 connection->io_path_acquired, timeout_milliseconds);
1079
1080 we_acquired = FALSE;
1081
1082 if (connection->io_path_acquired)
1083 {
1084 if (timeout_milliseconds != -1)
1085 {
1086 _dbus_verbose ("waiting %d for IO path to be acquirable\n",
1087 timeout_milliseconds);
1088
1089 if (!_dbus_condvar_wait_timeout (connection->io_path_cond,
1090 connection->io_path_mutex,
1091 timeout_milliseconds))
1092 {
1093 /* We timed out before anyone signaled. */
1094 /* (writing the loop to handle the !timedout case by
1095 * waiting longer if needed is a pain since dbus
1096 * wraps pthread_cond_timedwait to take a relative
1097 * time instead of absolute, something kind of stupid
1098 * on our part. for now it doesn't matter, we will just
1099 * end up back here eventually.)
1100 */
1101 }
1102 }
1103 else
1104 {
1105 while (connection->io_path_acquired)
1106 {
1107 _dbus_verbose ("waiting for IO path to be acquirable\n");
1108 _dbus_condvar_wait (connection->io_path_cond,
1109 connection->io_path_mutex);
1110 }
1111 }
1112 }
1113
1114 if (!connection->io_path_acquired)
1115 {
1116 we_acquired = TRUE;
1117 connection->io_path_acquired = TRUE;
1118 }
1119
1120 _dbus_verbose ("end connection->io_path_acquired = %d we_acquired = %d\n",
1121 connection->io_path_acquired, we_acquired);
1122
1123 _dbus_verbose ("unlocking io_path_mutex\n");
1124 _dbus_cmutex_unlock (connection->io_path_mutex);
1125
1126 CONNECTION_LOCK (connection);
1127
1128 HAVE_LOCK_CHECK (connection);
1129
1130 _dbus_connection_unref_unlocked (connection);
1131
1132 return we_acquired;
1133 }
1134
1142 static void
1143 _dbus_connection_release_io_path (DBusConnection *connection)
1144 {
1145 HAVE_LOCK_CHECK (connection);
1146
1147 _dbus_verbose ("locking io_path_mutex\n");
1148 _dbus_cmutex_lock (connection->io_path_mutex);
1149
1150 _dbus_assert (connection->io_path_acquired);
1151
1152 _dbus_verbose ("start connection->io_path_acquired = %d\n",
1153 connection->io_path_acquired);
1154
1155 connection->io_path_acquired = FALSE;
1156 _dbus_condvar_wake_one (connection->io_path_cond);
1157
1158 _dbus_verbose ("unlocking io_path_mutex\n");
1159 _dbus_cmutex_unlock (connection->io_path_mutex);
1160 }
1161
1197 void
1198 _dbus_connection_do_iteration_unlocked (DBusConnection *connection,
1199 DBusPendingCall *pending,
1200 unsigned int flags,
1201 int timeout_milliseconds)
1202 {
1203 _dbus_verbose ("start\n");
1204
1205 HAVE_LOCK_CHECK (connection);
1206
1207 if (connection->n_outgoing == 0)
1208 flags &= ~DBUS_ITERATION_DO_WRITING;
1209
1210 if (_dbus_connection_acquire_io_path (connection,
1211 (flags & DBUS_ITERATION_BLOCK) ? timeout_milliseconds : 0))
1212 {
1213 HAVE_LOCK_CHECK (connection);
1214
1215 if ( (pending != NULL) && _dbus_pending_call_get_completed_unlocked(pending))
1216 {
1217 _dbus_verbose ("pending call completed while acquiring I/O path");
1218 }
1219 else if ( (pending != NULL) &&
1220 _dbus_connection_peek_for_reply_unlocked (connection,
1221 _dbus_pending_call_get_reply_serial_unlocked (pending)))
1222 {
1223 _dbus_verbose ("pending call completed while acquiring I/O path (reply found in queue)");
1224 }
1225 else
1226 {
1227 _dbus_transport_do_iteration (connection->transport,
1228 flags, timeout_milliseconds);
1229 }
1230
1231 _dbus_connection_release_io_path (connection);
1232 }
1233
1234 HAVE_LOCK_CHECK (connection);
1235
1236 _dbus_verbose ("end\n");
1237 }
1238
1248 DBusConnection*
1249 _dbus_connection_new_for_transport (DBusTransport *transport)
1250 {
1251 DBusConnection *connection;
1252 DBusWatchList *watch_list;
1253 DBusTimeoutList *timeout_list;
1254 DBusHashTable *pending_replies;
1255 DBusList *disconnect_link;
1256 DBusMessage *disconnect_message;
1257 DBusCounter *outgoing_counter;
1258 DBusObjectTree *objects;
1259
1260 watch_list = NULL;
1261 connection = NULL;
1262 pending_replies = NULL;
1263 timeout_list = NULL;
1264 disconnect_link = NULL;
1265 disconnect_message = NULL;
1266 outgoing_counter = NULL;
1267 objects = NULL;
1268
1269 watch_list = _dbus_watch_list_new ();
1270 if (watch_list == NULL)
1271 goto error;
1272
1273 timeout_list = _dbus_timeout_list_new ();
1274 if (timeout_list == NULL)
1275 goto error;
1276
1277 pending_replies =
1278 _dbus_hash_table_new (DBUS_HASH_INT,
1279 NULL,
1280 (DBusFreeFunction)free_pending_call_on_hash_removal);
1281 if (pending_replies == NULL)
1282 goto error;
1283
1284 connection = dbus_new0 (DBusConnection, 1);
1285 if (connection == NULL)
1286 goto error;
1287
1288 _dbus_rmutex_new_at_location (&connection->mutex);
1289 if (connection->mutex == NULL)
1290 goto error;
1291
1292 _dbus_cmutex_new_at_location (&connection->io_path_mutex);
1293 if (connection->io_path_mutex == NULL)
1294 goto error;
1295
1296 _dbus_cmutex_new_at_location (&connection->dispatch_mutex);
1297 if (connection->dispatch_mutex == NULL)
1298 goto error;
1299
1300 _dbus_condvar_new_at_location (&connection->dispatch_cond);
1301 if (connection->dispatch_cond == NULL)
1302 goto error;
1303
1304 _dbus_condvar_new_at_location (&connection->io_path_cond);
1305 if (connection->io_path_cond == NULL)
1306 goto error;
1307
1308 _dbus_rmutex_new_at_location (&connection->slot_mutex);
1309 if (connection->slot_mutex == NULL)
1310 goto error;
1311
1312 disconnect_message = dbus_message_new_signal (DBUS_PATH_LOCAL,
1313 DBUS_INTERFACE_LOCAL,
1314 "Disconnected");
1315
1316 if (disconnect_message == NULL)
1317 goto error;
1318
1319 disconnect_link = _dbus_list_alloc_link (disconnect_message);
1320 if (disconnect_link == NULL)
1321 goto error;
1322
1323 outgoing_counter = _dbus_counter_new ();
1324 if (outgoing_counter == NULL)
1325 goto error;
1326
1327 objects = _dbus_object_tree_new (connection);
1328 if (objects == NULL)
1329 goto error;
1330
1331 if (_dbus_modify_sigpipe)
1332 _dbus_disable_sigpipe ();
1333
1334 /* initialized to 0: use atomic op to avoid mixing atomic and non-atomic */
1335 _dbus_atomic_inc (&connection->refcount);
1336 connection->transport = transport;
1337 connection->watches = watch_list;
1338 connection->timeouts = timeout_list;
1339 connection->pending_replies = pending_replies;
1340 connection->outgoing_counter = outgoing_counter;
1341 connection->filter_list = NULL;
1342 connection->last_dispatch_status = DBUS_DISPATCH_COMPLETE; /* so we're notified first time there's data */
1343 connection->objects = objects;
1344 connection->exit_on_disconnect = FALSE;
1345 connection->shareable = FALSE;
1346 connection->route_peer_messages = FALSE;
1347 connection->disconnected_message_arrived = FALSE;
1348 connection->disconnected_message_processed = FALSE;
1349
1350 #if defined(DBUS_ENABLE_CHECKS) || defined(DBUS_ENABLE_ASSERT)
1351 connection->generation = _dbus_current_generation;
1352 #endif
1353
1354 _dbus_data_slot_list_init (&connection->slot_list);
1355
1356 connection->client_serial = 1;
1357
1358 connection->disconnect_message_link = disconnect_link;
1359
1360 CONNECTION_LOCK (connection);
1361
1362 if (!_dbus_transport_set_connection (transport, connection))
1363 {
1364 CONNECTION_UNLOCK (connection);
1365
1366 goto error;
1367 }
1368
1369 _dbus_transport_ref (transport);
1370
1371 CONNECTION_UNLOCK (connection);
1372
1373 _dbus_connection_trace_ref (connection, 0, 1, "new_for_transport");
1374 return connection;
1375
1376 error:
1377 if (disconnect_message != NULL)
1378 dbus_message_unref (disconnect_message);
1379
1380 if (disconnect_link != NULL)
1381 _dbus_list_free_link (disconnect_link);
1382
1383 if (connection != NULL)
1384 {
1385 _dbus_condvar_free_at_location (&connection->io_path_cond);
1386 _dbus_condvar_free_at_location (&connection->dispatch_cond);
1387 _dbus_rmutex_free_at_location (&connection->mutex);
1388 _dbus_cmutex_free_at_location (&connection->io_path_mutex);
1389 _dbus_cmutex_free_at_location (&connection->dispatch_mutex);
1390 _dbus_rmutex_free_at_location (&connection->slot_mutex);
1391 dbus_free (connection);
1392 }
1393 if (pending_replies)
1394 _dbus_hash_table_unref (pending_replies);
1395
1396 if (watch_list)
1397 _dbus_watch_list_free (watch_list);
1398
1399 if (timeout_list)
1400 _dbus_timeout_list_free (timeout_list);
1401
1402 if (outgoing_counter)
1403 _dbus_counter_unref (outgoing_counter);
1404
1405 if (objects)
1406 _dbus_object_tree_unref (objects);
1407
1408 return NULL;
1409 }
1410
1418 DBusConnection *
1419 _dbus_connection_ref_unlocked (DBusConnection *connection)
1420 {
1421 dbus_int32_t old_refcount;
1422
1423 _dbus_assert (connection != NULL);
1424 _dbus_assert (connection->generation == _dbus_current_generation);
1425
1426 HAVE_LOCK_CHECK (connection);
1427
1428 old_refcount = _dbus_atomic_inc (&connection->refcount);
1429 _dbus_connection_trace_ref (connection, old_refcount, old_refcount + 1,
1430 "ref_unlocked");
1431
1432 return connection;
1433 }
1434
1441 void
1442 _dbus_connection_unref_unlocked (DBusConnection *connection)
1443 {
1444 dbus_int32_t old_refcount;
1445
1446 HAVE_LOCK_CHECK (connection);
1447
1448 _dbus_assert (connection != NULL);
1449
1450 old_refcount = _dbus_atomic_dec (&connection->refcount);
1451
1452 _dbus_connection_trace_ref (connection, old_refcount, old_refcount - 1,
1453 "unref_unlocked");
1454
1455 if (old_refcount == 1)
1456 _dbus_connection_last_unref (connection);
1457 }
1458
1459 static dbus_uint32_t
1460 _dbus_connection_get_next_client_serial (DBusConnection *connection)
1461 {
1462 dbus_uint32_t serial;
1463
1464 serial = connection->client_serial++;
1465
1466 if (connection->client_serial == 0)
1467 connection->client_serial = 1;
1468
1469 return serial;
1470 }
1471
1485 dbus_bool_t
1486 _dbus_connection_handle_watch (DBusWatch *watch,
1487 unsigned int condition,
1488 void *data)
1489 {
1490 DBusConnection *connection;
1491 dbus_bool_t retval;
1492 DBusDispatchStatus status;
1493
1494 connection = data;
1495
1496 _dbus_verbose ("start\n");
1497
1498 CONNECTION_LOCK (connection);
1499
1500 if (!_dbus_connection_acquire_io_path (connection, 1))
1501 {
1502 /* another thread is handling the message */
1503 CONNECTION_UNLOCK (connection);
1504 return TRUE;
1505 }
1506
1507 HAVE_LOCK_CHECK (connection);
1508 retval = _dbus_transport_handle_watch (connection->transport,
1509 watch, condition);
1510
1511 _dbus_connection_release_io_path (connection);
1512
1513 HAVE_LOCK_CHECK (connection);
1514
1515 _dbus_verbose ("middle\n");
1516
1517 status = _dbus_connection_get_dispatch_status_unlocked (connection);
1518
1519 /* this calls out to user code */
1520 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
1521
1522 _dbus_verbose ("end\n");
1523
1524 return retval;
1525 }
1526
1527 /* Protected by _DBUS_LOCK (shared_connections) */
1528 static DBusHashTable *shared_connections = NULL;
1529 static DBusList *shared_connections_no_guid = NULL;
1530
1531 static void
1532 close_connection_on_shutdown (DBusConnection *connection)
1533 {
1534 DBusMessage *message;
1535
1536 dbus_connection_ref (connection);
1537 _dbus_connection_close_possibly_shared (connection);
1538
1539 /* Churn through to the Disconnected message */
1540 while ((message = dbus_connection_pop_message (connection)))
1541 {
1542 dbus_message_unref (message);
1543 }
1544 dbus_connection_unref (connection);
1545 }
1546
1547 static void
1548 shared_connections_shutdown (void *data)
1549 {
1550 int n_entries;
1551
1552 if (!_DBUS_LOCK (shared_connections))
1553 {
1554 /* We'd have initialized locks before adding anything, so there
1555 * can't be anything there. */
1556 return;
1557 }
1558
1559 /* This is a little bit unpleasant... better ideas? */
1560 while ((n_entries = _dbus_hash_table_get_n_entries (shared_connections)) > 0)
1561 {
1562 DBusConnection *connection;
1563 DBusHashIter iter;
1564
1565 _dbus_hash_iter_init (shared_connections, &iter);
1566 _dbus_hash_iter_next (&iter);
1567
1568 connection = _dbus_hash_iter_get_value (&iter);
1569
1570 _DBUS_UNLOCK (shared_connections);
1571 close_connection_on_shutdown (connection);
1572 if (!_DBUS_LOCK (shared_connections))
1573 _dbus_assert_not_reached ("global locks were already initialized");
1574
1575 /* The connection should now be dead and not in our hash ... */
1576 _dbus_assert (_dbus_hash_table_get_n_entries (shared_connections) < n_entries);
1577 }
1578
1579 _dbus_assert (_dbus_hash_table_get_n_entries (shared_connections) == 0);
1580
1581 _dbus_hash_table_unref (shared_connections);
1582 shared_connections = NULL;
1583
1584 if (shared_connections_no_guid != NULL)
1585 {
1586 DBusConnection *connection;
1587 connection = _dbus_list_pop_first (&shared_connections_no_guid);
1588 while (connection != NULL)
1589 {
1590 _DBUS_UNLOCK (shared_connections);
1591 close_connection_on_shutdown (connection);
1592 if (!_DBUS_LOCK (shared_connections))
1593 _dbus_assert_not_reached ("global locks were already initialized");
1594 connection = _dbus_list_pop_first (&shared_connections_no_guid);
1595 }
1596 }
1597
1598 shared_connections_no_guid = NULL;
1599
1600 _DBUS_UNLOCK (shared_connections);
1601 }
1602
1603 static dbus_bool_t
1604 connection_lookup_shared (DBusAddressEntry *entry,
1605 DBusConnection **result)
1606 {
1607 _dbus_verbose ("checking for existing connection\n");
1608
1609 *result = NULL;
1610
1611 if (!_DBUS_LOCK (shared_connections))
1612 {
1613 /* If it was shared, we'd have initialized global locks when we put
1614 * it in shared_connections. */
1615 return FALSE;
1616 }
1617
1618 if (shared_connections == NULL)
1619 {
1620 _dbus_verbose ("creating shared_connections hash table\n");
1621
1622 shared_connections = _dbus_hash_table_new (DBUS_HASH_STRING,
1623 dbus_free,
1624 NULL);
1625 if (shared_connections == NULL)
1626 {
1627 _DBUS_UNLOCK (shared_connections);
1628 return FALSE;
1629 }
1630
1631 if (!_dbus_register_shutdown_func (shared_connections_shutdown, NULL))
1632 {
1633 _dbus_hash_table_unref (shared_connections);
1634 shared_connections = NULL;
1635 _DBUS_UNLOCK (shared_connections);
1636 return FALSE;
1637 }
1638
1639 _dbus_verbose (" successfully created shared_connections\n");
1640
1641 _DBUS_UNLOCK (shared_connections);
1642 return TRUE; /* no point looking up in the hash we just made */
1643 }
1644 else
1645 {
1646 const char *guid;
1647
1648 guid = dbus_address_entry_get_value (entry, "guid");
1649
1650 if (guid != NULL)
1651 {
1652 DBusConnection *connection;
1653
1654 connection = _dbus_hash_table_lookup_string (shared_connections,
1655 guid);
1656
1657 if (connection)
1658 {
1659 /* The DBusConnection can't be finalized without taking
1660 * the shared_connections lock to remove it from the
1661 * hash. So it's safe to ref the connection here.
1662 * However, it may be disconnected if the Disconnected
1663 * message hasn't been processed yet, in which case we
1664 * want to pretend it isn't in the hash and avoid
1665 * returning it.
1666 *
1667 * The idea is to avoid ever returning a disconnected connection
1668 * from dbus_connection_open(). We could just synchronously
1669 * drop our shared ref to the connection on connection disconnect,
1670 * and then assert here that the connection is connected, but
1671 * that causes reentrancy headaches.
1672 */
1673 CONNECTION_LOCK (connection);
1674 if (_dbus_connection_get_is_connected_unlocked (connection))
1675 {
1676 _dbus_connection_ref_unlocked (connection);
1677 *result = connection;
1678 _dbus_verbose ("looked up existing connection to server guid %s\n",
1679 guid);
1680 }
1681 else
1682 {
1683 _dbus_verbose ("looked up existing connection to server guid %s but it was disconnected so ignoring it\n",
1684 guid);
1685 }
1686 CONNECTION_UNLOCK (connection);
1687 }
1688 }
1689
1690 _DBUS_UNLOCK (shared_connections);
1691 return TRUE;
1692 }
1693 }
1694
1695 static dbus_bool_t
1696 connection_record_shared_unlocked (DBusConnection *connection,
1697 const char *guid)
1698 {
1699 char *guid_key;
1700 char *guid_in_connection;
1701
1702 HAVE_LOCK_CHECK (connection);
1703 _dbus_assert (connection->server_guid == NULL);
1704 _dbus_assert (connection->shareable);
1705
1706 /* get a hard ref on this connection, even if
1707 * we won't in fact store it in the hash, we still
1708 * need to hold a ref on it until it's disconnected.
1709 */
1710 _dbus_connection_ref_unlocked (connection);
1711
1712 if (guid == NULL)
1713 {
1714 if (!_DBUS_LOCK (shared_connections))
1715 return FALSE;
1716
1717 if (!_dbus_list_prepend (&shared_connections_no_guid, connection))
1718 {
1719 _DBUS_UNLOCK (shared_connections);
1720 return FALSE;
1721 }
1722
1723 _DBUS_UNLOCK (shared_connections);
1724 return TRUE; /* don't store in the hash */
1725 }
1726
1727 /* A separate copy of the key is required in the hash table, because
1728 * we don't have a lock on the connection when we are doing a hash
1729 * lookup.
1730 */
1731
1732 guid_key = _dbus_strdup (guid);
1733 if (guid_key == NULL)
1734 return FALSE;
1735
1736 guid_in_connection = _dbus_strdup (guid);
1737 if (guid_in_connection == NULL)
1738 {
1739 dbus_free (guid_key);
1740 return FALSE;
1741 }
1742
1743 if (!_DBUS_LOCK (shared_connections))
1744 {
1745 dbus_free (guid_in_connection);
1746 dbus_free (guid_key);
1747 return FALSE;
1748 }
1749
1750 _dbus_assert (shared_connections != NULL);
1751
1752 if (!_dbus_hash_table_insert_string (shared_connections,
1753 guid_key, connection))
1754 {
1755 dbus_free (guid_key);
1756 dbus_free (guid_in_connection);
1757 _DBUS_UNLOCK (shared_connections);
1758 return FALSE;
1759 }
1760
1761 connection->server_guid = guid_in_connection;
1762
1763 _dbus_verbose ("stored connection to %s to be shared\n",
1764 connection->server_guid);
1765
1766 _DBUS_UNLOCK (shared_connections);
1767
1768 _dbus_assert (connection->server_guid != NULL);
1769
1770 return TRUE;
1771 }
1772
1773 static void
1774 connection_forget_shared_unlocked (DBusConnection *connection)
1775 {
1776 HAVE_LOCK_CHECK (connection);
1777
1778 if (!connection->shareable)
1779 return;
1780
1781 if (!_DBUS_LOCK (shared_connections))
1782 {
1783 /* If it was shared, we'd have initialized global locks when we put
1784 * it in the table; so it can't be there. */
1785 return;
1786 }
1787
1788 if (connection->server_guid != NULL)
1789 {
1790 _dbus_verbose ("dropping connection to %s out of the shared table\n",
1791 connection->server_guid);
1792
1793 if (!_dbus_hash_table_remove_string (shared_connections,
1794 connection->server_guid))
1795 _dbus_assert_not_reached ("connection was not in the shared table");
1796
1797 dbus_free (connection->server_guid);
1798 connection->server_guid = NULL;
1799 }
1800 else
1801 {
1802 _dbus_list_remove (&shared_connections_no_guid, connection);
1803 }
1804
1805 _DBUS_UNLOCK (shared_connections);
1806
1807 /* remove our reference held on all shareable connections */
1808 _dbus_connection_unref_unlocked (connection);
1809 }
1810
1811 static DBusConnection*
1812 connection_try_from_address_entry (DBusAddressEntry *entry,
1813 DBusError *error)
1814 {
1815 DBusTransport *transport;
1816 DBusConnection *connection;
1817
1818 transport = _dbus_transport_open (entry, error);
1819
1820 if (transport == NULL)
1821 {
1822 _DBUS_ASSERT_ERROR_IS_SET (error);
1823 return NULL;
1824 }
1825
1826 connection = _dbus_connection_new_for_transport (transport);
1827
1828 _dbus_transport_unref (transport);
1829
1830 if (connection == NULL)
1831 {
1832 _DBUS_SET_OOM (error);
1833 return NULL;
1834 }
1835
1836 #ifndef DBUS_DISABLE_CHECKS
1837 _dbus_assert (!connection->have_connection_lock);
1838 #endif
1839 return connection;
1840 }
1841
1842 /*
1843 * If the shared parameter is true, then any existing connection will
1844 * be used (and if a new connection is created, it will be available
1845 * for use by others). If the shared parameter is false, a new
1846 * connection will always be created, and the new connection will
1847 * never be returned to other callers.
1848 *
1849 * @param address the address
1850 * @param shared whether the connection is shared or private
1851 * @param error error return
1852 * @returns the connection or #NULL on error
1853 */
1854 static DBusConnection*
1855 _dbus_connection_open_internal (const char *address,
1856 dbus_bool_t shared,
1857 DBusError *error)
1858 {
1859 DBusConnection *connection;
1860 DBusAddressEntry **entries;
1861 DBusError tmp_error = DBUS_ERROR_INIT;
1862 DBusError first_error = DBUS_ERROR_INIT;
1863 int len, i;
1864
1865 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1866
1867 _dbus_verbose ("opening %s connection to: %s\n",
1868 shared ? "shared" : "private", address);
1869
1870 if (!dbus_parse_address (address, &entries, &len, error))
1871 return NULL;
1872
1873 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1874
1875 connection = NULL;
1876
1877 for (i = 0; i < len; i++)
1878 {
1879 if (shared)
1880 {
1881 if (!connection_lookup_shared (entries[i], &connection))
1882 _DBUS_SET_OOM (&tmp_error);
1883 }
1884
1885 if (connection == NULL)
1886 {
1887 connection = connection_try_from_address_entry (entries[i],
1888 &tmp_error);
1889
1890 if (connection != NULL && shared)
1891 {
1892 const char *guid;
1893
1894 connection->shareable = TRUE;
1895
1896 /* guid may be NULL */
1897 guid = dbus_address_entry_get_value (entries[i], "guid");
1898
1899 CONNECTION_LOCK (connection);
1900
1901 if (!connection_record_shared_unlocked (connection, guid))
1902 {
1903 _DBUS_SET_OOM (&tmp_error);
1904 _dbus_connection_close_possibly_shared_and_unlock (connection);
1905 dbus_connection_unref (connection);
1906 connection = NULL;
1907 }
1908 else
1909 CONNECTION_UNLOCK (connection);
1910 }
1911 }
1912
1913 if (connection)
1914 break;
1915
1916 _DBUS_ASSERT_ERROR_IS_SET (&tmp_error);
1917
1918 if (i == 0)
1919 dbus_move_error (&tmp_error, &first_error);
1920 else
1921 dbus_error_free (&tmp_error);
1922 }
1923
1924 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1925 _DBUS_ASSERT_ERROR_IS_CLEAR (&tmp_error);
1926
1927 if (connection == NULL)
1928 {
1929 _DBUS_ASSERT_ERROR_IS_SET (&first_error);
1930 dbus_move_error (&first_error, error);
1931 }
1932 else
1933 dbus_error_free (&first_error);
1934
1935 dbus_address_entries_free (entries);
1936 return connection;
1937 }
1938
1947 void
1948 _dbus_connection_close_possibly_shared (DBusConnection *connection)
1949 {
1950 _dbus_assert (connection != NULL);
1951 _dbus_assert (connection->generation == _dbus_current_generation);
1952
1953 CONNECTION_LOCK (connection);
1954 _dbus_connection_close_possibly_shared_and_unlock (connection);
1955 }
1956
1957 static DBusPreallocatedSend*
1958 _dbus_connection_preallocate_send_unlocked (DBusConnection *connection)
1959 {
1960 DBusPreallocatedSend *preallocated;
1961
1962 HAVE_LOCK_CHECK (connection);
1963
1964 _dbus_assert (connection != NULL);
1965
1966 preallocated = dbus_new (DBusPreallocatedSend, 1);
1967 if (preallocated == NULL)
1968 return NULL;
1969
1970 preallocated->queue_link = _dbus_list_alloc_link (NULL);
1971 if (preallocated->queue_link == NULL)
1972 goto failed_0;
1973
1974 preallocated->counter_link = _dbus_list_alloc_link (connection->outgoing_counter);
1975 if (preallocated->counter_link == NULL)
1976 goto failed_1;
1977
1978 _dbus_counter_ref (preallocated->counter_link->data);
1979
1980 preallocated->connection = connection;
1981
1982 return preallocated;
1983
1984 failed_1:
1985 _dbus_list_free_link (preallocated->queue_link);
1986 failed_0:
1987 dbus_free (preallocated);
1988
1989 return NULL;
1990 }
1991
1992 /* Called with lock held, does not update dispatch status */
1993 static void
1994 _dbus_connection_send_preallocated_unlocked_no_update (DBusConnection *connection,
1995 DBusPreallocatedSend *preallocated,
1996 DBusMessage *message,
1997 dbus_uint32_t *client_serial)
1998 {
1999 dbus_uint32_t serial;
2000
2001 preallocated->queue_link->data = message;
2002 _dbus_list_prepend_link (&connection->outgoing_messages,
2003 preallocated->queue_link);
2004
2005 /* It's OK that we'll never call the notify function, because for the
2006 * outgoing limit, there isn't one */
2007 _dbus_message_add_counter_link (message,
2008 preallocated->counter_link);
2009
2010 dbus_free (preallocated);
2011 preallocated = NULL;
2012
2013 dbus_message_ref (message);
2014
2015 connection->n_outgoing += 1;
2016
2017 _dbus_verbose ("Message %p (%s %s %s %s '%s') for %s added to outgoing queue %p, %d pending to send\n",
2018 message,
2019 dbus_message_type_to_string (dbus_message_get_type (message)),
2020 dbus_message_get_path (message) ?
2021 dbus_message_get_path (message) :
2022 "no path",
2023 dbus_message_get_interface (message) ?
2024 dbus_message_get_interface (message) :
2025 "no interface",
2026 dbus_message_get_member (message) ?
2027 dbus_message_get_member (message) :
2028 "no member",
2029 dbus_message_get_signature (message),
2030 dbus_message_get_destination (message) ?
2031 dbus_message_get_destination (message) :
2032 "null",
2033 connection,
2034 connection->n_outgoing);
2035
2036 if (dbus_message_get_serial (message) == 0)
2037 {
2038 serial = _dbus_connection_get_next_client_serial (connection);
2039 dbus_message_set_serial (message, serial);
2040 if (client_serial)
2041 *client_serial = serial;
2042 }
2043 else
2044 {
2045 if (client_serial)
2046 *client_serial = dbus_message_get_serial (message);
2047 }
2048
2049 _dbus_verbose ("Message %p serial is %u\n",
2050 message, dbus_message_get_serial (message));
2051
2052 dbus_message_lock (message);
2053
2054 /* Now we need to run an iteration to hopefully just write the messages
2055 * out immediately, and otherwise get them queued up
2056 */
2057 _dbus_connection_do_iteration_unlocked (connection,
2058 NULL,
2059 DBUS_ITERATION_DO_WRITING,
2060 -1);
2061
2062 /* If stuff is still queued up, be sure we wake up the main loop */
2063 if (connection->n_outgoing > 0)
2064 _dbus_connection_wakeup_mainloop (connection);
2065 }
2066
2067 static void
2068 _dbus_connection_send_preallocated_and_unlock (DBusConnection *connection,
2069 DBusPreallocatedSend *preallocated,
2070 DBusMessage *message,
2071 dbus_uint32_t *client_serial)
2072 {
2073 DBusDispatchStatus status;
2074
2075 HAVE_LOCK_CHECK (connection);
2076
2077 _dbus_connection_send_preallocated_unlocked_no_update (connection,
2078 preallocated,
2079 message, client_serial);
2080
2081 _dbus_verbose ("middle\n");
2082 status = _dbus_connection_get_dispatch_status_unlocked (connection);
2083
2084 /* this calls out to user code */
2085 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2086 }
2087
2097 dbus_bool_t
2098 _dbus_connection_send_and_unlock (DBusConnection *connection,
2099 DBusMessage *message,
2100 dbus_uint32_t *client_serial)
2101 {
2102 DBusPreallocatedSend *preallocated;
2103
2104 _dbus_assert (connection != NULL);
2105 _dbus_assert (message != NULL);
2106
2107 preallocated = _dbus_connection_preallocate_send_unlocked (connection);
2108 if (preallocated == NULL)
2109 {
2110 CONNECTION_UNLOCK (connection);
2111 return FALSE;
2112 }
2113
2114 _dbus_connection_send_preallocated_and_unlock (connection,
2115 preallocated,
2116 message,
2117 client_serial);
2118 return TRUE;
2119 }
2120
2145 void
2146 _dbus_connection_close_if_only_one_ref (DBusConnection *connection)
2147 {
2148 dbus_int32_t refcount;
2149
2150 CONNECTION_LOCK (connection);
2151
2152 refcount = _dbus_atomic_get (&connection->refcount);
2153 /* The caller should have at least one ref */
2154 _dbus_assert (refcount >= 1);
2155
2156 if (refcount == 1)
2157 _dbus_connection_close_possibly_shared_and_unlock (connection);
2158 else
2159 CONNECTION_UNLOCK (connection);
2160 }
2161
2162
2172 static void
2173 _dbus_memory_pause_based_on_timeout (int timeout_milliseconds)
2174 {
2175 if (timeout_milliseconds == -1)
2176 _dbus_sleep_milliseconds (1000);
2177 else if (timeout_milliseconds < 100)
2178 ; /* just busy loop */
2179 else if (timeout_milliseconds <= 1000)
2180 _dbus_sleep_milliseconds (timeout_milliseconds / 3);
2181 else
2182 _dbus_sleep_milliseconds (1000);
2183 }
2184
2185 static DBusMessage *
2186 generate_local_error_message (dbus_uint32_t serial,
2187 char *error_name,
2188 char *error_msg)
2189 {
2190 DBusMessage *message;
2191 message = dbus_message_new (DBUS_MESSAGE_TYPE_ERROR);
2192 if (!message)
2193 goto out;
2194
2195 if (!dbus_message_set_error_name (message, error_name))
2196 {
2197 dbus_message_unref (message);
2198 message = NULL;
2199 goto out;
2200 }
2201
2202 dbus_message_set_no_reply (message, TRUE);
2203
2204 if (!dbus_message_set_reply_serial (message,
2205 serial))
2206 {
2207 dbus_message_unref (message);
2208 message = NULL;
2209 goto out;
2210 }
2211
2212 if (error_msg != NULL)
2213 {
2214 DBusMessageIter iter;
2215
2216 dbus_message_iter_init_append (message, &iter);
2217 if (!dbus_message_iter_append_basic (&iter,
2218 DBUS_TYPE_STRING,
2219 &error_msg))
2220 {
2221 dbus_message_unref (message);
2222 message = NULL;
2223 goto out;
2224 }
2225 }
2226
2227 out:
2228 return message;
2229 }
2230
2231 /*
2232 * Peek the incoming queue to see if we got reply for a specific serial
2233 */
2234 static dbus_bool_t
2235 _dbus_connection_peek_for_reply_unlocked (DBusConnection *connection,
2236 dbus_uint32_t client_serial)
2237 {
2238 DBusList *link;
2239 HAVE_LOCK_CHECK (connection);
2240
2241 link = _dbus_list_get_first_link (&connection->incoming_messages);
2242
2243 while (link != NULL)
2244 {
2245 DBusMessage *reply = link->data;
2246
2247 if (dbus_message_get_reply_serial (reply) == client_serial)
2248 {
2249 _dbus_verbose ("%s reply to %d found in queue\n", _DBUS_FUNCTION_NAME, client_serial);
2250 return TRUE;
2251 }
2252 link = _dbus_list_get_next_link (&connection->incoming_messages, link);
2253 }
2254
2255 return FALSE;
2256 }
2257
2258 /* This is slightly strange since we can pop a message here without
2259 * the dispatch lock.
2260 */
2261 static DBusMessage*
2262 check_for_reply_unlocked (DBusConnection *connection,
2263 dbus_uint32_t client_serial)
2264 {
2265 DBusList *link;
2266
2267 HAVE_LOCK_CHECK (connection);
2268
2269 link = _dbus_list_get_first_link (&connection->incoming_messages);
2270
2271 while (link != NULL)
2272 {
2273 DBusMessage *reply = link->data;
2274
2275 if (dbus_message_get_reply_serial (reply) == client_serial)
2276 {
2277 _dbus_list_remove_link (&connection->incoming_messages, link);
2278 connection->n_incoming -= 1;
2279 return reply;
2280 }
2281 link = _dbus_list_get_next_link (&connection->incoming_messages, link);
2282 }
2283
2284 return NULL;
2285 }
2286
2287 static void
2288 connection_timeout_and_complete_all_pending_calls_unlocked (DBusConnection *connection)
2289 {
2290 /* We can't iterate over the hash in the normal way since we'll be
2291 * dropping the lock for each item. So we restart the
2292 * iter each time as we drain the hash table.
2293 */
2294
2295 while (_dbus_hash_table_get_n_entries (connection->pending_replies) > 0)
2296 {
2297 DBusPendingCall *pending;
2298 DBusHashIter iter;
2299
2300 _dbus_hash_iter_init (connection->pending_replies, &iter);
2301 _dbus_hash_iter_next (&iter);
2302
2303 pending = _dbus_hash_iter_get_value (&iter);
2304 _dbus_pending_call_ref_unlocked (pending);
2305
2306 _dbus_pending_call_queue_timeout_error_unlocked (pending,
2307 connection);
2308
2309 if (_dbus_pending_call_is_timeout_added_unlocked (pending))
2310 _dbus_connection_remove_timeout_unlocked (connection,
2311 _dbus_pending_call_get_timeout_unlocked (pending));
2312 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
2313 _dbus_hash_iter_remove_entry (&iter);
2314
2315 _dbus_pending_call_unref_and_unlock (pending);
2316 CONNECTION_LOCK (connection);
2317 }
2318 HAVE_LOCK_CHECK (connection);
2319 }
2320
2321 static void
2322 complete_pending_call_and_unlock (DBusConnection *connection,
2323 DBusPendingCall *pending,
2324 DBusMessage *message)
2325 {
2326 _dbus_pending_call_set_reply_unlocked (pending, message);
2327 _dbus_pending_call_ref_unlocked (pending); /* in case there's no app with a ref held */
2328 _dbus_connection_detach_pending_call_and_unlock (connection, pending);
2329
2330 /* Must be called unlocked since it invokes app callback */
2331 _dbus_pending_call_complete (pending);
2332 dbus_pending_call_unref (pending);
2333 }
2334
2335 static dbus_bool_t
2336 check_for_reply_and_update_dispatch_unlocked (DBusConnection *connection,
2337 DBusPendingCall *pending)
2338 {
2339 DBusMessage *reply;
2340 DBusDispatchStatus status;
2341
2342 reply = check_for_reply_unlocked (connection,
2343 _dbus_pending_call_get_reply_serial_unlocked (pending));
2344 if (reply != NULL)
2345 {
2346 _dbus_verbose ("checked for reply\n");
2347
2348 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): got reply\n");
2349
2350 complete_pending_call_and_unlock (connection, pending, reply);
2351 dbus_message_unref (reply);
2352
2353 CONNECTION_LOCK (connection);
2354 status = _dbus_connection_get_dispatch_status_unlocked (connection);
2355 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2356 dbus_pending_call_unref (pending);
2357
2358 return TRUE;
2359 }
2360
2361 return FALSE;
2362 }
2363
2378 void
2379 _dbus_connection_block_pending_call (DBusPendingCall *pending)
2380 {
2381 long start_tv_sec, start_tv_usec;
2382 long tv_sec, tv_usec;
2383 DBusDispatchStatus status;
2384 DBusConnection *connection;
2385 dbus_uint32_t client_serial;
2386 DBusTimeout *timeout;
2387 int timeout_milliseconds, elapsed_milliseconds;
2388
2389 _dbus_assert (pending != NULL);
2390
2391 if (dbus_pending_call_get_completed (pending))
2392 return;
2393
2394 dbus_pending_call_ref (pending); /* necessary because the call could be canceled */
2395
2396 connection = _dbus_pending_call_get_connection_and_lock (pending);
2397
2398 /* Flush message queue - note, can affect dispatch status */
2399 _dbus_connection_flush_unlocked (connection);
2400
2401 client_serial = _dbus_pending_call_get_reply_serial_unlocked (pending);
2402
2403 /* note that timeout_milliseconds is limited to a smallish value
2404 * in _dbus_pending_call_new() so overflows aren't possible
2405 * below
2406 */
2407 timeout = _dbus_pending_call_get_timeout_unlocked (pending);
2408 _dbus_get_monotonic_time (&start_tv_sec, &start_tv_usec);
2409 if (timeout)
2410 {
2411 timeout_milliseconds = dbus_timeout_get_interval (timeout);
2412
2413 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): will block %d milliseconds for reply serial %u from %ld sec %ld usec\n",
2414 timeout_milliseconds,
2415 client_serial,
2416 start_tv_sec, start_tv_usec);
2417 }
2418 else
2419 {
2420 timeout_milliseconds = -1;
2421
2422 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): will block for reply serial %u\n", client_serial);
2423 }
2424
2425 /* check to see if we already got the data off the socket */
2426 /* from another blocked pending call */
2427 if (check_for_reply_and_update_dispatch_unlocked (connection, pending))
2428 return;
2429
2430 /* Now we wait... */
2431 /* always block at least once as we know we don't have the reply yet */
2432 _dbus_connection_do_iteration_unlocked (connection,
2433 pending,
2434 DBUS_ITERATION_DO_READING |
2435 DBUS_ITERATION_BLOCK,
2436 timeout_milliseconds);
2437
2438 recheck_status:
2439
2440 _dbus_verbose ("top of recheck\n");
2441
2442 HAVE_LOCK_CHECK (connection);
2443
2444 /* queue messages and get status */
2445
2446 status = _dbus_connection_get_dispatch_status_unlocked (connection);
2447
2448 /* the get_completed() is in case a dispatch() while we were blocking
2449 * got the reply instead of us.
2450 */
2451 if (_dbus_pending_call_get_completed_unlocked (pending))
2452 {
2453 _dbus_verbose ("Pending call completed by dispatch\n");
2454 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2455 dbus_pending_call_unref (pending);
2456 return;
2457 }
2458
2459 if (status == DBUS_DISPATCH_DATA_REMAINS)
2460 {
2461 if (check_for_reply_and_update_dispatch_unlocked (connection, pending))
2462 return;
2463 }
2464
2465 _dbus_get_monotonic_time (&tv_sec, &tv_usec);
2466 elapsed_milliseconds = (tv_sec - start_tv_sec) * 1000 +
2467 (tv_usec - start_tv_usec) / 1000;
2468
2469 if (!_dbus_connection_get_is_connected_unlocked (connection))
2470 {
2471 DBusMessage *error_msg;
2472
2473 error_msg = generate_local_error_message (client_serial,
2474 DBUS_ERROR_DISCONNECTED,
2475 "Connection was disconnected before a reply was received");
2476
2477 /* on OOM error_msg is set to NULL */
2478 complete_pending_call_and_unlock (connection, pending, error_msg);
2479 if (error_msg != NULL)
2480 dbus_message_unref (error_msg);
2481 dbus_pending_call_unref (pending);
2482 return;
2483 }
2484 else if (connection->disconnect_message_link == NULL)
2485 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): disconnected\n");
2486 else if (timeout == NULL)
2487 {
2488 if (status == DBUS_DISPATCH_NEED_MEMORY)
2489 {
2490 /* Try sleeping a bit, as we aren't sure we need to block for reading,
2491 * we may already have a reply in the buffer and just can't process
2492 * it.
2493 */
2494 _dbus_verbose ("dbus_connection_send_with_reply_and_block() waiting for more memory\n");
2495
2496 _dbus_memory_pause_based_on_timeout (timeout_milliseconds - elapsed_milliseconds);
2497 }
2498 else
2499 {
2500 /* block again, we don't have the reply buffered yet. */
2501 _dbus_connection_do_iteration_unlocked (connection,
2502 pending,
2503 DBUS_ITERATION_DO_READING |
2504 DBUS_ITERATION_BLOCK,
2505 timeout_milliseconds - elapsed_milliseconds);
2506 }
2507
2508 goto recheck_status;
2509 }
2510 else if (tv_sec < start_tv_sec)
2511 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): clock set backward\n");
2512 else if (elapsed_milliseconds < timeout_milliseconds)
2513 {
2514 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): %d milliseconds remain\n", timeout_milliseconds - elapsed_milliseconds);
2515
2516 if (status == DBUS_DISPATCH_NEED_MEMORY)
2517 {
2518 /* Try sleeping a bit, as we aren't sure we need to block for reading,
2519 * we may already have a reply in the buffer and just can't process
2520 * it.
2521 */
2522 _dbus_verbose ("dbus_connection_send_with_reply_and_block() waiting for more memory\n");
2523
2524 _dbus_memory_pause_based_on_timeout (timeout_milliseconds - elapsed_milliseconds);
2525 }
2526 else
2527 {
2528 /* block again, we don't have the reply buffered yet. */
2529 _dbus_connection_do_iteration_unlocked (connection,
2530 NULL,
2531 DBUS_ITERATION_DO_READING |
2532 DBUS_ITERATION_BLOCK,
2533 timeout_milliseconds - elapsed_milliseconds);
2534 }
2535
2536 goto recheck_status;
2537 }
2538
2539 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): Waited %d milliseconds and got no reply\n",
2540 elapsed_milliseconds);
2541
2542 _dbus_assert (!_dbus_pending_call_get_completed_unlocked (pending));
2543
2544 /* unlock and call user code */
2545 complete_pending_call_and_unlock (connection, pending, NULL);
2546
2547 /* update user code on dispatch status */
2548 CONNECTION_LOCK (connection);
2549 status = _dbus_connection_get_dispatch_status_unlocked (connection);
2550 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2551 dbus_pending_call_unref (pending);
2552 }
2553
2559 int
2560 _dbus_connection_get_pending_fds_count (DBusConnection *connection)
2561 {
2562 return _dbus_transport_get_pending_fds_count (connection->transport);
2563 }
2564
2572 void
2573 _dbus_connection_set_pending_fds_function (DBusConnection *connection,
2574 DBusPendingFdsChangeFunction callback,
2575 void *data)
2576 {
2577 _dbus_transport_set_pending_fds_function (connection->transport,
2578 callback, data);
2579 }
2580
2617 DBusConnection*
2618 dbus_connection_open (const char *address,
2619 DBusError *error)
2620 {
2621 DBusConnection *connection;
2622
2623 _dbus_return_val_if_fail (address != NULL, NULL);
2624 _dbus_return_val_if_error_is_set (error, NULL);
2625
2626 connection = _dbus_connection_open_internal (address,
2627 TRUE,
2628 error);
2629
2630 return connection;
2631 }
2632
2660 DBusConnection*
2661 dbus_connection_open_private (const char *address,
2662 DBusError *error)
2663 {
2664 DBusConnection *connection;
2665
2666 _dbus_return_val_if_fail (address != NULL, NULL);
2667 _dbus_return_val_if_error_is_set (error, NULL);
2668
2669 connection = _dbus_connection_open_internal (address,
2670 FALSE,
2671 error);
2672
2673 return connection;
2674 }
2675
2682 DBusConnection *
2683 dbus_connection_ref (DBusConnection *connection)
2684 {
2685 dbus_int32_t old_refcount;
2686
2687 _dbus_return_val_if_fail (connection != NULL, NULL);
2688 _dbus_return_val_if_fail (connection->generation == _dbus_current_generation, NULL);
2689 old_refcount = _dbus_atomic_inc (&connection->refcount);
2690 _dbus_connection_trace_ref (connection, old_refcount, old_refcount + 1,
2691 "ref");
2692
2693 return connection;
2694 }
2695
2696 static void
2697 free_outgoing_message (void *element,
2698 void *data)
2699 {
2700 DBusMessage *message = element;
2701 DBusConnection *connection = data;
2702
2703 _dbus_message_remove_counter (message, connection->outgoing_counter);
2704 dbus_message_unref (message);
2705 }
2706
2707 /* This is run without the mutex held, but after the last reference
2708 * to the connection has been dropped we should have no thread-related
2709 * problems
2710 */
2711 static void
2712 _dbus_connection_last_unref (DBusConnection *connection)
2713 {
2714 DBusList *link;
2715
2716 _dbus_verbose ("Finalizing connection %p\n", connection);
2717
2718 _dbus_assert (_dbus_atomic_get (&connection->refcount) == 0);
2719
2720 /* You have to disconnect the connection before unref:ing it. Otherwise
2721 * you won't get the disconnected message.
2722 */
2723 _dbus_assert (!_dbus_transport_get_is_connected (connection->transport));
2724 _dbus_assert (connection->server_guid == NULL);
2725
2726 /* ---- We're going to call various application callbacks here, hope it doesn't break anything... */
2727 _dbus_object_tree_free_all_unlocked (connection->objects);
2728
2729 dbus_connection_set_dispatch_status_function (connection, NULL, NULL, NULL);
2730 dbus_connection_set_wakeup_main_function (connection, NULL, NULL, NULL);
2731 dbus_connection_set_unix_user_function (connection, NULL, NULL, NULL);
2732 dbus_connection_set_windows_user_function (connection, NULL, NULL, NULL);
2733
2734 _dbus_watch_list_free (connection->watches);
2735 connection->watches = NULL;
2736
2737 _dbus_timeout_list_free (connection->timeouts);
2738 connection->timeouts = NULL;
2739
2740 _dbus_data_slot_list_free (&connection->slot_list);
2741
2742 link = _dbus_list_get_first_link (&connection->filter_list);
2743 while (link != NULL)
2744 {
2745 DBusMessageFilter *filter = link->data;
2746 DBusList *next = _dbus_list_get_next_link (&connection->filter_list, link);
2747
2748 filter->function = NULL;
2749 _dbus_message_filter_unref (filter); /* calls app callback */
2750 link->data = NULL;
2751
2752 link = next;
2753 }
2754 _dbus_list_clear (&connection->filter_list);
2755
2756 /* ---- Done with stuff that invokes application callbacks */
2757
2758 _dbus_object_tree_unref (connection->objects);
2759
2760 _dbus_hash_table_unref (connection->pending_replies);
2761 connection->pending_replies = NULL;
2762
2763 _dbus_list_clear (&connection->filter_list);
2764
2765 _dbus_list_foreach (&connection->outgoing_messages,
2766 free_outgoing_message,
2767 connection);
2768 _dbus_list_clear (&connection->outgoing_messages);
2769
2770 _dbus_list_foreach (&connection->incoming_messages,
2771 (DBusForeachFunction) dbus_message_unref,
2772 NULL);
2773 _dbus_list_clear (&connection->incoming_messages);
2774
2775 _dbus_counter_unref (connection->outgoing_counter);
2776
2777 _dbus_transport_unref (connection->transport);
2778
2779 if (connection->disconnect_message_link)
2780 {
2781 DBusMessage *message = connection->disconnect_message_link->data;
2782 dbus_message_unref (message);
2783 _dbus_list_free_link (connection->disconnect_message_link);
2784 }
2785
2786 _dbus_condvar_free_at_location (&connection->dispatch_cond);
2787 _dbus_condvar_free_at_location (&connection->io_path_cond);
2788
2789 _dbus_cmutex_free_at_location (&connection->io_path_mutex);
2790 _dbus_cmutex_free_at_location (&connection->dispatch_mutex);
2791
2792 _dbus_rmutex_free_at_location (&connection->slot_mutex);
2793
2794 _dbus_rmutex_free_at_location (&connection->mutex);
2795
2796 dbus_free (connection);
2797 }
2798
2818 void
2819 dbus_connection_unref (DBusConnection *connection)
2820 {
2821 dbus_int32_t old_refcount;
2822
2823 _dbus_return_if_fail (connection != NULL);
2824 _dbus_return_if_fail (connection->generation == _dbus_current_generation);
2825
2826 old_refcount = _dbus_atomic_dec (&connection->refcount);
2827
2828 _dbus_connection_trace_ref (connection, old_refcount, old_refcount - 1,
2829 "unref");
2830
2831 if (old_refcount == 1)
2832 {
2833 #ifndef DBUS_DISABLE_CHECKS
2834 if (_dbus_transport_get_is_connected (connection->transport))
2835 {
2836 _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",
2837 connection->shareable ?
2838 "Most likely, the application called unref() too many times and removed a reference belonging to libdbus, since this is a shared connection.\n" :
2839 "Most likely, the application was supposed to call dbus_connection_close(), since this is a private connection.\n");
2840 return;
2841 }
2842 #endif
2843 _dbus_connection_last_unref (connection);
2844 }
2845 }
2846
2847 /*
2848 * Note that the transport can disconnect itself (other end drops us)
2849 * and in that case this function never runs. So this function must
2850 * not do anything more than disconnect the transport and update the
2851 * dispatch status.
2852 *
2853 * If the transport self-disconnects, then we assume someone will
2854 * dispatch the connection to cause the dispatch status update.
2855 */
2856 static void
2857 _dbus_connection_close_possibly_shared_and_unlock (DBusConnection *connection)
2858 {
2859 DBusDispatchStatus status;
2860
2861 HAVE_LOCK_CHECK (connection);
2862
2863 _dbus_verbose ("Disconnecting %p\n", connection);
2864
2865 /* We need to ref because update_dispatch_status_and_unlock will unref
2866 * the connection if it was shared and libdbus was the only remaining
2867 * refcount holder.
2868 */
2869 _dbus_connection_ref_unlocked (connection);
2870
2871 _dbus_transport_disconnect (connection->transport);
2872
2873 /* This has the side effect of queuing the disconnect message link
2874 * (unless we don't have enough memory, possibly, so don't assert it).
2875 * After the disconnect message link is queued, dbus_bus_get/dbus_connection_open
2876 * should never again return the newly-disconnected connection.
2877 *
2878 * However, we only unref the shared connection and exit_on_disconnect when
2879 * the disconnect message reaches the head of the message queue,
2880 * NOT when it's first queued.
2881 */
2882 status = _dbus_connection_get_dispatch_status_unlocked (connection);
2883
2884 /* This calls out to user code */
2885 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2886
2887 /* Could also call out to user code */
2888 dbus_connection_unref (connection);
2889 }
2890
2933 void
2934 dbus_connection_close (DBusConnection *connection)
2935 {
2936 _dbus_return_if_fail (connection != NULL);
2937 _dbus_return_if_fail (connection->generation == _dbus_current_generation);
2938
2939 CONNECTION_LOCK (connection);
2940
2941 #ifndef DBUS_DISABLE_CHECKS
2942 if (connection->shareable)
2943 {
2944 CONNECTION_UNLOCK (connection);
2945
2946 _dbus_warn_check_failed ("Applications must not close shared connections - see dbus_connection_close() docs. This is a bug in the application.\n");
2947 return;
2948 }
2949 #endif
2950
2951 _dbus_connection_close_possibly_shared_and_unlock (connection);
2952 }
2953
2954 static dbus_bool_t
2955 _dbus_connection_get_is_connected_unlocked (DBusConnection *connection)
2956 {
2957 HAVE_LOCK_CHECK (connection);
2958 return _dbus_transport_get_is_connected (connection->transport);
2959 }
2960
2974 dbus_bool_t
2975 dbus_connection_get_is_connected (DBusConnection *connection)
2976 {
2977 dbus_bool_t res;
2978
2979 _dbus_return_val_if_fail (connection != NULL, FALSE);
2980
2981 CONNECTION_LOCK (connection);
2982 res = _dbus_connection_get_is_connected_unlocked (connection);
2983 CONNECTION_UNLOCK (connection);
2984
2985 return res;
2986 }
2987
2996 dbus_bool_t
2997 dbus_connection_get_is_authenticated (DBusConnection *connection)
2998 {
2999 dbus_bool_t res;
3000
3001 _dbus_return_val_if_fail (connection != NULL, FALSE);
3002
3003 CONNECTION_LOCK (connection);
3004 res = _dbus_transport_try_to_authenticate (connection->transport);
3005 CONNECTION_UNLOCK (connection);
3006
3007 return res;
3008 }
3009
3030 dbus_bool_t
3031 dbus_connection_get_is_anonymous (DBusConnection *connection)
3032 {
3033 dbus_bool_t res;
3034
3035 _dbus_return_val_if_fail (connection != NULL, FALSE);
3036
3037 CONNECTION_LOCK (connection);
3038 res = _dbus_transport_get_is_anonymous (connection->transport);
3039 CONNECTION_UNLOCK (connection);
3040
3041 return res;
3042 }
3043
3075 char*
3076 dbus_connection_get_server_id (DBusConnection *connection)
3077 {
3078 char *id;
3079
3080 _dbus_return_val_if_fail (connection != NULL, NULL);
3081
3082 CONNECTION_LOCK (connection);
3083 id = _dbus_strdup (_dbus_transport_get_server_id (connection->transport));
3084 CONNECTION_UNLOCK (connection);
3085
3086 return id;
3087 }
3088
3106 dbus_bool_t
3107 dbus_connection_can_send_type(DBusConnection *connection,
3108 int type)
3109 {
3110 _dbus_return_val_if_fail (connection != NULL, FALSE);
3111
3112 if (!dbus_type_is_valid (type))
3113 return FALSE;
3114
3115 if (type != DBUS_TYPE_UNIX_FD)
3116 return TRUE;
3117
3118 #ifdef HAVE_UNIX_FD_PASSING
3119 {
3120 dbus_bool_t b;
3121
3122 CONNECTION_LOCK(connection);
3123 b = _dbus_transport_can_pass_unix_fd(connection->transport);
3124 CONNECTION_UNLOCK(connection);
3125
3126 return b;
3127 }
3128 #endif
3129
3130 return FALSE;
3131 }
3132
3146 void
3147 dbus_connection_set_exit_on_disconnect (DBusConnection *connection,
3148 dbus_bool_t exit_on_disconnect)
3149 {
3150 _dbus_return_if_fail (connection != NULL);
3151
3152 CONNECTION_LOCK (connection);
3153 connection->exit_on_disconnect = exit_on_disconnect != FALSE;
3154 CONNECTION_UNLOCK (connection);
3155 }
3156
3166 DBusPreallocatedSend*
3167 dbus_connection_preallocate_send (DBusConnection *connection)
3168 {
3169 DBusPreallocatedSend *preallocated;
3170
3171 _dbus_return_val_if_fail (connection != NULL, NULL);
3172
3173 CONNECTION_LOCK (connection);
3174
3175 preallocated =
3176 _dbus_connection_preallocate_send_unlocked (connection);
3177
3178 CONNECTION_UNLOCK (connection);
3179
3180 return preallocated;
3181 }
3182
3192 void
3193 dbus_connection_free_preallocated_send (DBusConnection *connection,
3194 DBusPreallocatedSend *preallocated)
3195 {
3196 _dbus_return_if_fail (connection != NULL);
3197 _dbus_return_if_fail (preallocated != NULL);
3198 _dbus_return_if_fail (connection == preallocated->connection);
3199
3200 _dbus_list_free_link (preallocated->queue_link);
3201 _dbus_counter_unref (preallocated->counter_link->data);
3202 _dbus_list_free_link (preallocated->counter_link);
3203 dbus_free (preallocated);
3204 }
3205
3218 void
3219 dbus_connection_send_preallocated (DBusConnection *connection,
3220 DBusPreallocatedSend *preallocated,
3221 DBusMessage *message,
3222 dbus_uint32_t *client_serial)
3223 {
3224 _dbus_return_if_fail (connection != NULL);
3225 _dbus_return_if_fail (preallocated != NULL);
3226 _dbus_return_if_fail (message != NULL);
3227 _dbus_return_if_fail (preallocated->connection == connection);
3228 _dbus_return_if_fail (dbus_message_get_type (message) != DBUS_MESSAGE_TYPE_METHOD_CALL ||
3229 dbus_message_get_member (message) != NULL);
3230 _dbus_return_if_fail (dbus_message_get_type (message) != DBUS_MESSAGE_TYPE_SIGNAL ||
3231 (dbus_message_get_interface (message) != NULL &&
3232 dbus_message_get_member (message) != NULL));
3233
3234 CONNECTION_LOCK (connection);
3235
3236 #ifdef HAVE_UNIX_FD_PASSING
3237
3238 if (!_dbus_transport_can_pass_unix_fd(connection->transport) &&
3239 message->n_unix_fds > 0)
3240 {
3241 /* Refuse to send fds on a connection that cannot handle
3242 them. Unfortunately we cannot return a proper error here, so
3243 the best we can is just return. */
3244 CONNECTION_UNLOCK (connection);
3245 return;
3246 }
3247
3248 #endif
3249
3250 _dbus_connection_send_preallocated_and_unlock (connection,
3251 preallocated,
3252 message, client_serial);
3253 }
3254
3255 static dbus_bool_t
3256 _dbus_connection_send_unlocked_no_update (DBusConnection *connection,
3257 DBusMessage *message,
3258 dbus_uint32_t *client_serial)
3259 {
3260 DBusPreallocatedSend *preallocated;
3261
3262 _dbus_assert (connection != NULL);
3263 _dbus_assert (message != NULL);
3264
3265 preallocated = _dbus_connection_preallocate_send_unlocked (connection);
3266 if (preallocated == NULL)
3267 return FALSE;
3268
3269 _dbus_connection_send_preallocated_unlocked_no_update (connection,
3270 preallocated,
3271 message,
3272 client_serial);
3273 return TRUE;
3274 }
3275
3303 dbus_bool_t
3304 dbus_connection_send (DBusConnection *connection,
3305 DBusMessage *message,
3306 dbus_uint32_t *serial)
3307 {
3308 _dbus_return_val_if_fail (connection != NULL, FALSE);
3309 _dbus_return_val_if_fail (message != NULL, FALSE);
3310
3311 CONNECTION_LOCK (connection);
3312
3313 #ifdef HAVE_UNIX_FD_PASSING
3314
3315 if (!_dbus_transport_can_pass_unix_fd(connection->transport) &&
3316 message->n_unix_fds > 0)
3317 {
3318 /* Refuse to send fds on a connection that cannot handle
3319 them. Unfortunately we cannot return a proper error here, so
3320 the best we can is just return. */
3321 CONNECTION_UNLOCK (connection);
3322 return FALSE;
3323 }
3324
3325 #endif
3326
3327 return _dbus_connection_send_and_unlock (connection,
3328 message,
3329 serial);
3330 }
3331
3332 static dbus_bool_t
3333 reply_handler_timeout (void *data)
3334 {
3335 DBusConnection *connection;
3336 DBusDispatchStatus status;
3337 DBusPendingCall *pending = data;
3338
3339 connection = _dbus_pending_call_get_connection_and_lock (pending);
3340 _dbus_connection_ref_unlocked (connection);
3341
3342 _dbus_pending_call_queue_timeout_error_unlocked (pending,
3343 connection);
3344 _dbus_connection_remove_timeout_unlocked (connection,
3345 _dbus_pending_call_get_timeout_unlocked (pending));
3346 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
3347
3348 _dbus_verbose ("middle\n");
3349 status = _dbus_connection_get_dispatch_status_unlocked (connection);
3350
3351 /* Unlocks, and calls out to user code */
3352 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3353 dbus_connection_unref (connection);
3354
3355 return TRUE;
3356 }
3357
3400 dbus_bool_t
3401 dbus_connection_send_with_reply (DBusConnection *connection,
3402 DBusMessage *message,
3403 DBusPendingCall **pending_return,
3404 int timeout_milliseconds)
3405 {
3406 DBusPendingCall *pending;
3407 dbus_int32_t serial = -1;
3408 DBusDispatchStatus status;
3409
3410 _dbus_return_val_if_fail (connection != NULL, FALSE);
3411 _dbus_return_val_if_fail (message != NULL, FALSE);
3412 _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, FALSE);
3413
3414 if (pending_return)
3415 *pending_return = NULL;
3416
3417 CONNECTION_LOCK (connection);
3418
3419 #ifdef HAVE_UNIX_FD_PASSING
3420
3421 if (!_dbus_transport_can_pass_unix_fd(connection->transport) &&
3422 message->n_unix_fds > 0)
3423 {
3424 /* Refuse to send fds on a connection that cannot handle
3425 them. Unfortunately we cannot return a proper error here, so
3426 the best we can do is return TRUE but leave *pending_return
3427 as NULL. */
3428 CONNECTION_UNLOCK (connection);
3429 return TRUE;
3430 }
3431
3432 #endif
3433
3434 if (!_dbus_connection_get_is_connected_unlocked (connection))
3435 {
3436 CONNECTION_UNLOCK (connection);
3437
3438 return TRUE;
3439 }
3440
3441 pending = _dbus_pending_call_new_unlocked (connection,
3442 timeout_milliseconds,
3443 reply_handler_timeout);
3444
3445 if (pending == NULL)
3446 {
3447 CONNECTION_UNLOCK (connection);
3448 return FALSE;
3449 }
3450
3451 /* Assign a serial to the message */
3452 serial = dbus_message_get_serial (message);
3453 if (serial == 0)
3454 {
3455 serial = _dbus_connection_get_next_client_serial (connection);
3456 dbus_message_set_serial (message, serial);
3457 }
3458
3459 if (!_dbus_pending_call_set_timeout_error_unlocked (pending, message, serial))
3460 goto error;
3461
3462 /* Insert the serial in the pending replies hash;
3463 * hash takes a refcount on DBusPendingCall.
3464 * Also, add the timeout.
3465 */
3466 if (!_dbus_connection_attach_pending_call_unlocked (connection,
3467 pending))
3468 goto error;
3469
3470 if (!_dbus_connection_send_unlocked_no_update (connection, message, NULL))
3471 {
3472 _dbus_connection_detach_pending_call_and_unlock (connection,
3473 pending);
3474 goto error_unlocked;
3475 }
3476
3477 if (pending_return)
3478 *pending_return = pending; /* hand off refcount */
3479 else
3480 {
3481 _dbus_connection_detach_pending_call_unlocked (connection, pending);
3482 /* we still have a ref to the pending call in this case, we unref
3483 * after unlocking, below
3484 */
3485 }
3486
3487 status = _dbus_connection_get_dispatch_status_unlocked (connection);
3488
3489 /* this calls out to user code */
3490 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3491
3492 if (pending_return == NULL)
3493 dbus_pending_call_unref (pending);
3494
3495 return TRUE;
3496
3497 error:
3498 CONNECTION_UNLOCK (connection);
3499 error_unlocked:
3500 dbus_pending_call_unref (pending);
3501 return FALSE;
3502 }
3503
3536 DBusMessage*
3537 dbus_connection_send_with_reply_and_block (DBusConnection *connection,
3538 DBusMessage *message,
3539 int timeout_milliseconds,
3540 DBusError *error)
3541 {
3542 DBusMessage *reply;
3543 DBusPendingCall *pending;
3544
3545 _dbus_return_val_if_fail (connection != NULL, NULL);
3546 _dbus_return_val_if_fail (message != NULL, NULL);
3547 _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, NULL);
3548 _dbus_return_val_if_error_is_set (error, NULL);
3549
3550 #ifdef HAVE_UNIX_FD_PASSING
3551
3552 CONNECTION_LOCK (connection);
3553 if (!_dbus_transport_can_pass_unix_fd(connection->transport) &&
3554 message->n_unix_fds > 0)
3555 {
3556 CONNECTION_UNLOCK (connection);
3557 dbus_set_error(error, DBUS_ERROR_FAILED, "Cannot send file descriptors on this connection.");
3558 return NULL;
3559 }
3560 CONNECTION_UNLOCK (connection);
3561
3562 #endif
3563
3564 if (!dbus_connection_send_with_reply (connection, message,
3565 &pending, timeout_milliseconds))
3566 {
3567 _DBUS_SET_OOM (error);
3568 return NULL;
3569 }
3570
3571 if (pending == NULL)
3572 {
3573 dbus_set_error (error, DBUS_ERROR_DISCONNECTED, "Connection is closed");
3574 return NULL;
3575 }
3576
3577 dbus_pending_call_block (pending);
3578
3579 reply = dbus_pending_call_steal_reply (pending);
3580 dbus_pending_call_unref (pending);
3581
3582 /* call_complete_and_unlock() called from pending_call_block() should
3583 * always fill this in.
3584 */
3585 _dbus_assert (reply != NULL);
3586
3587 if (dbus_set_error_from_message (error, reply))
3588 {
3589 dbus_message_unref (reply);
3590 return NULL;
3591 }
3592 else
3593 return reply;
3594 }
3595
3604 static DBusDispatchStatus
3605 _dbus_connection_flush_unlocked (DBusConnection *connection)
3606 {
3607 /* We have to specify DBUS_ITERATION_DO_READING here because
3608 * otherwise we could have two apps deadlock if they are both doing
3609 * a flush(), and the kernel buffers fill up. This could change the
3610 * dispatch status.
3611 */
3612 DBusDispatchStatus status;
3613
3614 HAVE_LOCK_CHECK (connection);
3615
3616 while (connection->n_outgoing > 0 &&
3617 _dbus_connection_get_is_connected_unlocked (connection))
3618 {
3619 _dbus_verbose ("doing iteration in\n");
3620 HAVE_LOCK_CHECK (connection);
3621 _dbus_connection_do_iteration_unlocked (connection,
3622 NULL,
3623 DBUS_ITERATION_DO_READING |
3624 DBUS_ITERATION_DO_WRITING |
3625 DBUS_ITERATION_BLOCK,
3626 -1);
3627 }
3628
3629 HAVE_LOCK_CHECK (connection);
3630 _dbus_verbose ("middle\n");
3631 status = _dbus_connection_get_dispatch_status_unlocked (connection);
3632
3633 HAVE_LOCK_CHECK (connection);
3634 return status;
3635 }
3636
3642 void
3643 dbus_connection_flush (DBusConnection *connection)
3644 {
3645 /* We have to specify DBUS_ITERATION_DO_READING here because
3646 * otherwise we could have two apps deadlock if they are both doing
3647 * a flush(), and the kernel buffers fill up. This could change the
3648 * dispatch status.
3649 */
3650 DBusDispatchStatus status;
3651
3652 _dbus_return_if_fail (connection != NULL);
3653
3654 CONNECTION_LOCK (connection);
3655
3656 status = _dbus_connection_flush_unlocked (connection);
3657
3658 HAVE_LOCK_CHECK (connection);
3659 /* Unlocks and calls out to user code */
3660 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3661
3662 _dbus_verbose ("end\n");
3663 }
3664
3675 static dbus_bool_t
3676 _dbus_connection_read_write_dispatch (DBusConnection *connection,
3677 int timeout_milliseconds,
3678 dbus_bool_t dispatch)
3679 {
3680 DBusDispatchStatus dstatus;
3681 dbus_bool_t progress_possible;
3682
3683 /* Need to grab a ref here in case we're a private connection and
3684 * the user drops the last ref in a handler we call; see bug
3685 * https://bugs.freedesktop.org/show_bug.cgi?id=15635
3686 */
3687 dbus_connection_ref (connection);
3688 dstatus = dbus_connection_get_dispatch_status (connection);
3689
3690 if (dispatch && dstatus == DBUS_DISPATCH_DATA_REMAINS)
3691 {
3692 _dbus_verbose ("doing dispatch\n");
3693 dbus_connection_dispatch (connection);
3694 CONNECTION_LOCK (connection);
3695 }
3696 else if (dstatus == DBUS_DISPATCH_NEED_MEMORY)
3697 {
3698 _dbus_verbose ("pausing for memory\n");
3699 _dbus_memory_pause_based_on_timeout (timeout_milliseconds);
3700 CONNECTION_LOCK (connection);
3701 }
3702 else
3703 {
3704 CONNECTION_LOCK (connection);
3705 if (_dbus_connection_get_is_connected_unlocked (connection))
3706 {
3707 _dbus_verbose ("doing iteration\n");
3708 _dbus_connection_do_iteration_unlocked (connection,
3709 NULL,
3710 DBUS_ITERATION_DO_READING |
3711 DBUS_ITERATION_DO_WRITING |
3712 DBUS_ITERATION_BLOCK,
3713 timeout_milliseconds);
3714 }
3715 }
3716
3717 HAVE_LOCK_CHECK (connection);
3718 /* If we can dispatch, we can make progress until the Disconnected message
3719 * has been processed; if we can only read/write, we can make progress
3720 * as long as the transport is open.
3721 */
3722 if (dispatch)
3723 progress_possible = connection->n_incoming != 0 ||
3724 connection->disconnect_message_link != NULL;
3725 else
3726 progress_possible = _dbus_connection_get_is_connected_unlocked (connection);
3727
3728 CONNECTION_UNLOCK (connection);
3729
3730 dbus_connection_unref (connection);
3731
3732 return progress_possible; /* TRUE if we can make more progress */
3733 }
3734
3735
3770 dbus_bool_t
3771 dbus_connection_read_write_dispatch (DBusConnection *connection,
3772 int timeout_milliseconds)
3773 {
3774 _dbus_return_val_if_fail (connection != NULL, FALSE);
3775 _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, FALSE);
3776 return _dbus_connection_read_write_dispatch(connection, timeout_milliseconds, TRUE);
3777 }
3778
3802 dbus_bool_t
3803 dbus_connection_read_write (DBusConnection *connection,
3804 int timeout_milliseconds)
3805 {
3806 _dbus_return_val_if_fail (connection != NULL, FALSE);
3807 _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, FALSE);
3808 return _dbus_connection_read_write_dispatch(connection, timeout_milliseconds, FALSE);
3809 }
3810
3811 /* We need to call this anytime we pop the head of the queue, and then
3812 * update_dispatch_status_and_unlock needs to be called afterward
3813 * which will "process" the disconnected message and set
3814 * disconnected_message_processed.
3815 */
3816 static void
3817 check_disconnected_message_arrived_unlocked (DBusConnection *connection,
3818 DBusMessage *head_of_queue)
3819 {
3820 HAVE_LOCK_CHECK (connection);
3821
3822 /* checking that the link is NULL is an optimization to avoid the is_signal call */
3823 if (connection->disconnect_message_link == NULL &&
3824 dbus_message_is_signal (head_of_queue,
3825 DBUS_INTERFACE_LOCAL,
3826 "Disconnected"))
3827 {
3828 connection->disconnected_message_arrived = TRUE;
3829 }
3830 }
3831
3851 DBusMessage*
3852 dbus_connection_borrow_message (DBusConnection *connection)
3853 {
3854 DBusDispatchStatus status;
3855 DBusMessage *message;
3856
3857 _dbus_return_val_if_fail (connection != NULL, NULL);
3858
3859 _dbus_verbose ("start\n");
3860
3861 /* this is called for the side effect that it queues
3862 * up any messages from the transport
3863 */
3864 status = dbus_connection_get_dispatch_status (connection);
3865 if (status != DBUS_DISPATCH_DATA_REMAINS)
3866 return NULL;
3867
3868 CONNECTION_LOCK (connection);
3869
3870 _dbus_connection_acquire_dispatch (connection);
3871
3872 /* While a message is outstanding, the dispatch lock is held */
3873 _dbus_assert (connection->message_borrowed == NULL);
3874
3875 connection->message_borrowed = _dbus_list_get_first (&connection->incoming_messages);
3876
3877 message = connection->message_borrowed;
3878
3879 check_disconnected_message_arrived_unlocked (connection, message);
3880
3881 /* Note that we KEEP the dispatch lock until the message is returned */
3882 if (message == NULL)
3883 _dbus_connection_release_dispatch (connection);
3884
3885 CONNECTION_UNLOCK (connection);
3886
3887 _dbus_message_trace_ref (message, -1, -1, "dbus_connection_borrow_message");
3888
3889 /* We don't update dispatch status until it's returned or stolen */
3890
3891 return message;
3892 }
3893
3902 void
3903 dbus_connection_return_message (DBusConnection *connection,
3904 DBusMessage *message)
3905 {
3906 DBusDispatchStatus status;
3907
3908 _dbus_return_if_fail (connection != NULL);
3909 _dbus_return_if_fail (message != NULL);
3910 _dbus_return_if_fail (message == connection->message_borrowed);
3911 _dbus_return_if_fail (connection->dispatch_acquired);
3912
3913 CONNECTION_LOCK (connection);
3914
3915 _dbus_assert (message == connection->message_borrowed);
3916
3917 connection->message_borrowed = NULL;
3918
3919 _dbus_connection_release_dispatch (connection);
3920
3921 status = _dbus_connection_get_dispatch_status_unlocked (connection);
3922 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3923
3924 _dbus_message_trace_ref (message, -1, -1, "dbus_connection_return_message");
3925 }
3926
3936 void
3937 dbus_connection_steal_borrowed_message (DBusConnection *connection,
3938 DBusMessage *message)
3939 {
3940 DBusMessage *pop_message;
3941 DBusDispatchStatus status;
3942
3943 _dbus_return_if_fail (connection != NULL);
3944 _dbus_return_if_fail (message != NULL);
3945 _dbus_return_if_fail (message == connection->message_borrowed);
3946 _dbus_return_if_fail (connection->dispatch_acquired);
3947
3948 CONNECTION_LOCK (connection);
3949
3950 _dbus_assert (message == connection->message_borrowed);
3951
3952 pop_message = _dbus_list_pop_first (&connection->incoming_messages);
3953 _dbus_assert (message == pop_message);
3954 (void) pop_message; /* unused unless asserting */
3955
3956 connection->n_incoming -= 1;
3957
3958 _dbus_verbose ("Incoming message %p stolen from queue, %d incoming\n",
3959 message, connection->n_incoming);
3960
3961 connection->message_borrowed = NULL;
3962
3963 _dbus_connection_release_dispatch (connection);
3964
3965 status = _dbus_connection_get_dispatch_status_unlocked (connection);
3966 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3967 _dbus_message_trace_ref (message, -1, -1,
3968 "dbus_connection_steal_borrowed_message");
3969 }
3970
3971 /* See dbus_connection_pop_message, but requires the caller to own
3972 * the lock before calling. May drop the lock while running.
3973 */
3974 static DBusList*
3975 _dbus_connection_pop_message_link_unlocked (DBusConnection *connection)
3976 {
3977 HAVE_LOCK_CHECK (connection);
3978
3979 _dbus_assert (connection->message_borrowed == NULL);
3980
3981 if (connection->n_incoming > 0)
3982 {
3983 DBusList *link;
3984
3985 link = _dbus_list_pop_first_link (&connection->incoming_messages);
3986 connection->n_incoming -= 1;
3987
3988 _dbus_verbose ("Message %p (%s %s %s %s sig:'%s' serial:%u) removed from incoming queue %p, %d incoming\n",
3989 link->data,
3990 dbus_message_type_to_string (dbus_message_get_type (link->data)),
3991 dbus_message_get_path (link->data) ?
3992 dbus_message_get_path (link->data) :
3993 "no path",
3994 dbus_message_get_interface (link->data) ?
3995 dbus_message_get_interface (link->data) :
3996 "no interface",
3997 dbus_message_get_member (link->data) ?
3998 dbus_message_get_member (link->data) :
3999 "no member",
4000 dbus_message_get_signature (link->data),
4001 dbus_message_get_serial (link->data),
4002 connection, connection->n_incoming);
4003
4004 _dbus_message_trace_ref (link->data, -1, -1,
4005 "_dbus_connection_pop_message_link_unlocked");
4006
4007 check_disconnected_message_arrived_unlocked (connection, link->data);
4008
4009 return link;
4010 }
4011 else
4012 return NULL;
4013 }
4014
4015 /* See dbus_connection_pop_message, but requires the caller to own
4016 * the lock before calling. May drop the lock while running.
4017 */
4018 static DBusMessage*
4019 _dbus_connection_pop_message_unlocked (DBusConnection *connection)
4020 {
4021 DBusList *link;
4022
4023 HAVE_LOCK_CHECK (connection);
4024
4025 link = _dbus_connection_pop_message_link_unlocked (connection);
4026
4027 if (link != NULL)
4028 {
4029 DBusMessage *message;
4030
4031 message = link->data;
4032
4033 _dbus_list_free_link (link);
4034
4035 return message;
4036 }
4037 else
4038 return NULL;
4039 }
4040
4041 static void
4042 _dbus_connection_putback_message_link_unlocked (DBusConnection *connection,
4043 DBusList *message_link)
4044 {
4045 HAVE_LOCK_CHECK (connection);
4046
4047 _dbus_assert (message_link != NULL);
4048 /* You can't borrow a message while a link is outstanding */
4049 _dbus_assert (connection->message_borrowed == NULL);
4050 /* We had to have the dispatch lock across the pop/putback */
4051 _dbus_assert (connection->dispatch_acquired);
4052
4053 _dbus_list_prepend_link (&connection->incoming_messages,
4054 message_link);
4055 connection->n_incoming += 1;
4056
4057 _dbus_verbose ("Message %p (%s %s %s '%s') put back into queue %p, %d incoming\n",
4058 message_link->data,
4059 dbus_message_type_to_string (dbus_message_get_type (message_link->data)),
4060 dbus_message_get_interface (message_link->data) ?
4061 dbus_message_get_interface (message_link->data) :
4062 "no interface",
4063 dbus_message_get_member (message_link->data) ?
4064 dbus_message_get_member (message_link->data) :
4065 "no member",
4066 dbus_message_get_signature (message_link->data),
4067 connection, connection->n_incoming);
4068
4069 _dbus_message_trace_ref (message_link->data, -1, -1,
4070 "_dbus_connection_putback_message_link_unlocked");
4071 }
4072
4092 DBusMessage*
4093 dbus_connection_pop_message (DBusConnection *connection)
4094 {
4095 DBusMessage *message;
4096 DBusDispatchStatus status;
4097
4098 _dbus_verbose ("start\n");
4099
4100 /* this is called for the side effect that it queues
4101 * up any messages from the transport
4102 */
4103 status = dbus_connection_get_dispatch_status (connection);
4104 if (status != DBUS_DISPATCH_DATA_REMAINS)
4105 return NULL;
4106
4107 CONNECTION_LOCK (connection);
4108 _dbus_connection_acquire_dispatch (connection);
4109 HAVE_LOCK_CHECK (connection);
4110
4111 message = _dbus_connection_pop_message_unlocked (connection);
4112
4113 _dbus_verbose ("Returning popped message %p\n", message);
4114
4115 _dbus_connection_release_dispatch (connection);
4116
4117 status = _dbus_connection_get_dispatch_status_unlocked (connection);
4118 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
4119
4120 return message;
4121 }
4122
4130 static void
4131 _dbus_connection_acquire_dispatch (DBusConnection *connection)
4132 {
4133 HAVE_LOCK_CHECK (connection);
4134
4135 _dbus_connection_ref_unlocked (connection);
4136 CONNECTION_UNLOCK (connection);
4137
4138 _dbus_verbose ("locking dispatch_mutex\n");
4139 _dbus_cmutex_lock (connection->dispatch_mutex);
4140
4141 while (connection->dispatch_acquired)
4142 {
4143 _dbus_verbose ("waiting for dispatch to be acquirable\n");
4144 _dbus_condvar_wait (connection->dispatch_cond,
4145 connection->dispatch_mutex);
4146 }
4147
4148 _dbus_assert (!connection->dispatch_acquired);
4149
4150 connection->dispatch_acquired = TRUE;
4151
4152 _dbus_verbose ("unlocking dispatch_mutex\n");
4153 _dbus_cmutex_unlock (connection->dispatch_mutex);
4154
4155 CONNECTION_LOCK (connection);
4156 _dbus_connection_unref_unlocked (connection);
4157 }
4158
4166 static void
4167 _dbus_connection_release_dispatch (DBusConnection *connection)
4168 {
4169 HAVE_LOCK_CHECK (connection);
4170
4171 _dbus_verbose ("locking dispatch_mutex\n");
4172 _dbus_cmutex_lock (connection->dispatch_mutex);
4173
4174 _dbus_assert (connection->dispatch_acquired);
4175
4176 connection->dispatch_acquired = FALSE;
4177 _dbus_condvar_wake_one (connection->dispatch_cond);
4178
4179 _dbus_verbose ("unlocking dispatch_mutex\n");
4180 _dbus_cmutex_unlock (connection->dispatch_mutex);
4181 }
4182
4183 static void
4184 _dbus_connection_failed_pop (DBusConnection *connection,
4185 DBusList *message_link)
4186 {
4187 _dbus_list_prepend_link (&connection->incoming_messages,
4188 message_link);
4189 connection->n_incoming += 1;
4190 }
4191
4192 /* Note this may be called multiple times since we don't track whether we already did it */
4193 static void
4194 notify_disconnected_unlocked (DBusConnection *connection)
4195 {
4196 HAVE_LOCK_CHECK (connection);
4197
4198 /* Set the weakref in dbus-bus.c to NULL, so nobody will get a disconnected
4199 * connection from dbus_bus_get(). We make the same guarantee for
4200 * dbus_connection_open() but in a different way since we don't want to
4201 * unref right here; we instead check for connectedness before returning
4202 * the connection from the hash.
4203 */
4204 _dbus_bus_notify_shared_connection_disconnected_unlocked (connection);
4205
4206 /* Dump the outgoing queue, we aren't going to be able to
4207 * send it now, and we'd like accessors like
4208 * dbus_connection_get_outgoing_size() to be accurate.
4209 */
4210 if (connection->n_outgoing > 0)
4211 {
4212 DBusList *link;
4213
4214 _dbus_verbose ("Dropping %d outgoing messages since we're disconnected\n",
4215 connection->n_outgoing);
4216
4217 while ((link = _dbus_list_get_last_link (&connection->outgoing_messages)))
4218 {
4219 _dbus_connection_message_sent_unlocked (connection, link->data);
4220 }
4221 }
4222 }
4223
4224 /* Note this may be called multiple times since we don't track whether we already did it */
4225 static DBusDispatchStatus
4226 notify_disconnected_and_dispatch_complete_unlocked (DBusConnection *connection)
4227 {
4228 HAVE_LOCK_CHECK (connection);
4229
4230 if (connection->disconnect_message_link != NULL)
4231 {
4232 _dbus_verbose ("Sending disconnect message\n");
4233
4234 /* If we have pending calls, queue their timeouts - we want the Disconnected
4235 * to be the last message, after these timeouts.
4236 */
4237 connection_timeout_and_complete_all_pending_calls_unlocked (connection);
4238
4239 /* We haven't sent the disconnect message already,
4240 * and all real messages have been queued up.
4241 */
4242 _dbus_connection_queue_synthesized_message_link (connection,
4243 connection->disconnect_message_link);
4244 connection->disconnect_message_link = NULL;
4245
4246 return DBUS_DISPATCH_DATA_REMAINS;
4247 }
4248
4249 return DBUS_DISPATCH_COMPLETE;
4250 }
4251
4252 static DBusDispatchStatus
4253 _dbus_connection_get_dispatch_status_unlocked (DBusConnection *connection)
4254 {
4255 HAVE_LOCK_CHECK (connection);
4256
4257 if (connection->n_incoming > 0)
4258 return DBUS_DISPATCH_DATA_REMAINS;
4259 else if (!_dbus_transport_queue_messages (connection->transport))
4260 return DBUS_DISPATCH_NEED_MEMORY;
4261 else
4262 {
4263 DBusDispatchStatus status;
4264 dbus_bool_t is_connected;
4265
4266 status = _dbus_transport_get_dispatch_status (connection->transport);
4267 is_connected = _dbus_transport_get_is_connected (connection->transport);
4268
4269 _dbus_verbose ("dispatch status = %s is_connected = %d\n",
4270 DISPATCH_STATUS_NAME (status), is_connected);
4271
4272 if (!is_connected)
4273 {
4274 /* It's possible this would be better done by having an explicit
4275 * notification from _dbus_transport_disconnect() that would
4276 * synchronously do this, instead of waiting for the next dispatch
4277 * status check. However, probably not good to change until it causes
4278 * a problem.
4279 */
4280 notify_disconnected_unlocked (connection);
4281
4282 /* I'm not sure this is needed; the idea is that we want to
4283 * queue the Disconnected only after we've read all the
4284 * messages, but if we're disconnected maybe we are guaranteed
4285 * to have read them all ?
4286 */
4287 if (status == DBUS_DISPATCH_COMPLETE)
4288 status = notify_disconnected_and_dispatch_complete_unlocked (connection);
4289 }
4290
4291 if (status != DBUS_DISPATCH_COMPLETE)
4292 return status;
4293 else if (connection->n_incoming > 0)
4294 return DBUS_DISPATCH_DATA_REMAINS;
4295 else
4296 return DBUS_DISPATCH_COMPLETE;
4297 }
4298 }
4299
4300 static void
4301 _dbus_connection_update_dispatch_status_and_unlock (DBusConnection *connection,
4302 DBusDispatchStatus new_status)
4303 {
4304 dbus_bool_t changed;
4305 DBusDispatchStatusFunction function;
4306 void *data;
4307
4308 HAVE_LOCK_CHECK (connection);
4309
4310 _dbus_connection_ref_unlocked (connection);
4311
4312 changed = new_status != connection->last_dispatch_status;
4313
4314 connection->last_dispatch_status = new_status;
4315
4316 function = connection->dispatch_status_function;
4317 data = connection->dispatch_status_data;
4318
4319 if (connection->disconnected_message_arrived &&
4320 !connection->disconnected_message_processed)
4321 {
4322 connection->disconnected_message_processed = TRUE;
4323
4324 /* this does an unref, but we have a ref
4325 * so we should not run the finalizer here
4326 * inside the lock.
4327 */
4328 connection_forget_shared_unlocked (connection);
4329
4330 if (connection->exit_on_disconnect)
4331 {
4332 CONNECTION_UNLOCK (connection);
4333
4334 _dbus_verbose ("Exiting on Disconnected signal\n");
4335 _dbus_exit (1);
4336 _dbus_assert_not_reached ("Call to exit() returned");
4337 }
4338 }
4339
4340 /* We drop the lock */
4341 CONNECTION_UNLOCK (connection);
4342
4343 if (changed && function)
4344 {
4345 _dbus_verbose ("Notifying of change to dispatch status of %p now %d (%s)\n",
4346 connection, new_status,
4347 DISPATCH_STATUS_NAME (new_status));
4348 (* function) (connection, new_status, data);
4349 }
4350
4351 dbus_connection_unref (connection);
4352 }
4353
4379 DBusDispatchStatus
4380 dbus_connection_get_dispatch_status (DBusConnection *connection)
4381 {
4382 DBusDispatchStatus status;
4383
4384 _dbus_return_val_if_fail (connection != NULL, DBUS_DISPATCH_COMPLETE);
4385
4386 _dbus_verbose ("start\n");
4387
4388 CONNECTION_LOCK (connection);
4389
4390 status = _dbus_connection_get_dispatch_status_unlocked (connection);
4391
4392 CONNECTION_UNLOCK (connection);
4393
4394 return status;
4395 }
4396
4400 static DBusHandlerResult
4401 _dbus_connection_peer_filter_unlocked_no_update (DBusConnection *connection,
4402 DBusMessage *message)
4403 {
4404 dbus_bool_t sent = FALSE;
4405 DBusMessage *ret = NULL;
4406 DBusList *expire_link;
4407
4408 if (connection->route_peer_messages && dbus_message_get_destination (message) != NULL)
4409 {
4410 /* This means we're letting the bus route this message */
4411 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
4412 }
4413
4414 if (!dbus_message_has_interface (message, DBUS_INTERFACE_PEER))
4415 {
4416 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
4417 }
4418
4419 /* Preallocate a linked-list link, so that if we need to dispose of a
4420 * message, we can attach it to the expired list */
4421 expire_link = _dbus_list_alloc_link (NULL);
4422
4423 if (!expire_link)
4424 return DBUS_HANDLER_RESULT_NEED_MEMORY;
4425
4426 if (dbus_message_is_method_call (message,
4427 DBUS_INTERFACE_PEER,
4428 "Ping"))
4429 {
4430 ret = dbus_message_new_method_return (message);
4431 if (ret == NULL)
4432 goto out;
4433
4434 sent = _dbus_connection_send_unlocked_no_update (connection, ret, NULL);
4435 }
4436 else if (dbus_message_is_method_call (message,
4437 DBUS_INTERFACE_PEER,
4438 "GetMachineId"))
4439 {
4440 DBusString uuid;
4441 DBusError error = DBUS_ERROR_INIT;
4442
4443 if (!_dbus_string_init (&uuid))
4444 goto out;
4445
4446 if (_dbus_get_local_machine_uuid_encoded (&uuid, &error))
4447 {
4448 const char *v_STRING;
4449
4450 ret = dbus_message_new_method_return (message);
4451
4452 if (ret == NULL)
4453 {
4454 _dbus_string_free (&uuid);
4455 goto out;
4456 }
4457
4458 v_STRING = _dbus_string_get_const_data (&uuid);
4459 if (dbus_message_append_args (ret,
4460 DBUS_TYPE_STRING, &v_STRING,
4461 DBUS_TYPE_INVALID))
4462 {
4463 sent = _dbus_connection_send_unlocked_no_update (connection, ret, NULL);
4464 }
4465 }
4466 else if (dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY))
4467 {
4468 dbus_error_free (&error);
4469 goto out;
4470 }
4471 else
4472 {
4473 ret = dbus_message_new_error (message, error.name, error.message);
4474 dbus_error_free (&error);
4475
4476 if (ret == NULL)
4477 goto out;
4478
4479 sent = _dbus_connection_send_unlocked_no_update (connection, ret,
4480 NULL);
4481 }
4482
4483 _dbus_string_free (&uuid);
4484 }
4485 else
4486 {
4487 /* We need to bounce anything else with this interface, otherwise apps
4488 * could start extending the interface and when we added extensions
4489 * here to DBusConnection we'd break those apps.
4490 */
4491 ret = dbus_message_new_error (message,
4492 DBUS_ERROR_UNKNOWN_METHOD,
4493 "Unknown method invoked on org.freedesktop.DBus.Peer interface");
4494 if (ret == NULL)
4495 goto out;
4496
4497 sent = _dbus_connection_send_unlocked_no_update (connection, ret, NULL);
4498 }
4499
4500 out:
4501 if (ret == NULL)
4502 {
4503 _dbus_list_free_link (expire_link);
4504 }
4505 else
4506 {
4507 /* It'll be safe to unref the reply when we unlock */
4508 expire_link->data = ret;
4509 _dbus_list_prepend_link (&connection->expired_messages, expire_link);
4510 }
4511
4512 if (!sent)
4513 return DBUS_HANDLER_RESULT_NEED_MEMORY;
4514
4515 return DBUS_HANDLER_RESULT_HANDLED;
4516 }
4517
4524 static DBusHandlerResult
4525 _dbus_connection_run_builtin_filters_unlocked_no_update (DBusConnection *connection,
4526 DBusMessage *message)
4527 {
4528 /* We just run one filter for now but have the option to run more
4529 if the spec calls for it in the future */
4530
4531 return _dbus_connection_peer_filter_unlocked_no_update (connection, message);
4532 }
4533
4576 DBusDispatchStatus
4577 dbus_connection_dispatch (DBusConnection *connection)
4578 {
4579 DBusMessage *message;
4580 DBusList *link, *filter_list_copy, *message_link;
4581 DBusHandlerResult result;
4582 DBusPendingCall *pending;
4583 dbus_int32_t reply_serial;
4584 DBusDispatchStatus status;
4585 dbus_bool_t found_object;
4586
4587 _dbus_return_val_if_fail (connection != NULL, DBUS_DISPATCH_COMPLETE);
4588
4589 _dbus_verbose ("\n");
4590
4591 CONNECTION_LOCK (connection);
4592 status = _dbus_connection_get_dispatch_status_unlocked (connection);
4593 if (status != DBUS_DISPATCH_DATA_REMAINS)
4594 {
4595 /* unlocks and calls out to user code */
4596 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
4597 return status;
4598 }
4599
4600 /* We need to ref the connection since the callback could potentially
4601 * drop the last ref to it
4602 */
4603 _dbus_connection_ref_unlocked (connection);
4604
4605 _dbus_connection_acquire_dispatch (connection);
4606 HAVE_LOCK_CHECK (connection);
4607
4608 message_link = _dbus_connection_pop_message_link_unlocked (connection);
4609 if (message_link == NULL)
4610 {
4611 /* another thread dispatched our stuff */
4612
4613 _dbus_verbose ("another thread dispatched message (during acquire_dispatch above)\n");
4614
4615 _dbus_connection_release_dispatch (connection);
4616
4617 status = _dbus_connection_get_dispatch_status_unlocked (connection);
4618
4619 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
4620
4621 dbus_connection_unref (connection);
4622
4623 return status;
4624 }
4625
4626 message = message_link->data;
4627
4628 _dbus_verbose (" dispatching message %p (%s %s %s '%s')\n",
4629 message,
4630 dbus_message_type_to_string (dbus_message_get_type (message)),
4631 dbus_message_get_interface (message) ?
4632 dbus_message_get_interface (message) :
4633 "no interface",
4634 dbus_message_get_member (message) ?
4635 dbus_message_get_member (message) :
4636 "no member",
4637 dbus_message_get_signature (message));
4638
4639 result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
4640
4641 /* Pending call handling must be first, because if you do
4642 * dbus_connection_send_with_reply_and_block() or
4643 * dbus_pending_call_block() then no handlers/filters will be run on
4644 * the reply. We want consistent semantics in the case where we
4645 * dbus_connection_dispatch() the reply.
4646 */
4647
4648 reply_serial = dbus_message_get_reply_serial (message);
4649 pending = _dbus_hash_table_lookup_int (connection->pending_replies,
4650 reply_serial);
4651 if (pending)
4652 {
4653 _dbus_verbose ("Dispatching a pending reply\n");
4654 complete_pending_call_and_unlock (connection, pending, message);
4655 pending = NULL; /* it's probably unref'd */
4656
4657 CONNECTION_LOCK (connection);
4658 _dbus_verbose ("pending call completed in dispatch\n");
4659 result = DBUS_HANDLER_RESULT_HANDLED;
4660 goto out;
4661 }
4662
4663 result = _dbus_connection_run_builtin_filters_unlocked_no_update (connection, message);
4664 if (result != DBUS_HANDLER_RESULT_NOT_YET_HANDLED)
4665 goto out;
4666
4667 if (!_dbus_list_copy (&connection->filter_list, &filter_list_copy))
4668 {
4669 _dbus_connection_release_dispatch (connection);
4670 HAVE_LOCK_CHECK (connection);
4671
4672 _dbus_connection_failed_pop (connection, message_link);
4673
4674 /* unlocks and calls user code */
4675 _dbus_connection_update_dispatch_status_and_unlock (connection,
4676 DBUS_DISPATCH_NEED_MEMORY);
4677 dbus_connection_unref (connection);
4678
4679 return DBUS_DISPATCH_NEED_MEMORY;
4680 }
4681
4682 _dbus_list_foreach (&filter_list_copy,
4683 (DBusForeachFunction)_dbus_message_filter_ref,
4684 NULL);
4685
4686 /* We're still protected from dispatch() reentrancy here
4687 * since we acquired the dispatcher
4688 */
4689 CONNECTION_UNLOCK (connection);
4690
4691 link = _dbus_list_get_first_link (&filter_list_copy);
4692 while (link != NULL)
4693 {
4694 DBusMessageFilter *filter = link->data;
4695 DBusList *next = _dbus_list_get_next_link (&filter_list_copy, link);
4696
4697 if (filter->function == NULL)
4698 {
4699 _dbus_verbose (" filter was removed in a callback function\n");
4700 link = next;
4701 continue;
4702 }
4703
4704 _dbus_verbose (" running filter on message %p\n", message);
4705 result = (* filter->function) (connection, message, filter->user_data);
4706
4707 if (result != DBUS_HANDLER_RESULT_NOT_YET_HANDLED)
4708 break;
4709
4710 link = next;
4711 }
4712
4713 _dbus_list_foreach (&filter_list_copy,
4714 (DBusForeachFunction)_dbus_message_filter_unref,
4715 NULL);
4716 _dbus_list_clear (&filter_list_copy);
4717
4718 CONNECTION_LOCK (connection);
4719
4720 if (result == DBUS_HANDLER_RESULT_NEED_MEMORY)
4721 {
4722 _dbus_verbose ("No memory\n");
4723 goto out;
4724 }
4725 else if (result == DBUS_HANDLER_RESULT_HANDLED)
4726 {
4727 _dbus_verbose ("filter handled message in dispatch\n");
4728 goto out;
4729 }
4730
4731 /* We're still protected from dispatch() reentrancy here
4732 * since we acquired the dispatcher
4733 */
4734 _dbus_verbose (" running object path dispatch on message %p (%s %s %s '%s')\n",
4735 message,
4736 dbus_message_type_to_string (dbus_message_get_type (message)),
4737 dbus_message_get_interface (message) ?
4738 dbus_message_get_interface (message) :
4739 "no interface",
4740 dbus_message_get_member (message) ?
4741 dbus_message_get_member (message) :
4742 "no member",
4743 dbus_message_get_signature (message));
4744
4745 HAVE_LOCK_CHECK (connection);
4746 result = _dbus_object_tree_dispatch_and_unlock (connection->objects,
4747 message,
4748 &found_object);
4749
4750 CONNECTION_LOCK (connection);
4751
4752 if (result != DBUS_HANDLER_RESULT_NOT_YET_HANDLED)
4753 {
4754 _dbus_verbose ("object tree handled message in dispatch\n");
4755 goto out;
4756 }
4757
4758 if (dbus_message_get_type (message) == DBUS_MESSAGE_TYPE_METHOD_CALL)
4759 {
4760 DBusMessage *reply;
4761 DBusString str;
4762 DBusPreallocatedSend *preallocated;
4763 DBusList *expire_link;
4764
4765 _dbus_verbose (" sending error %s\n",
4766 DBUS_ERROR_UNKNOWN_METHOD);
4767
4768 if (!_dbus_string_init (&str))
4769 {
4770 result = DBUS_HANDLER_RESULT_NEED_MEMORY;
4771 _dbus_verbose ("no memory for error string in dispatch\n");
4772 goto out;
4773 }
4774
4775 if (!_dbus_string_append_printf (&str,
4776 "Method \"%s\" with signature \"%s\" on interface \"%s\" doesn't exist\n",
4777 dbus_message_get_member (message),
4778 dbus_message_get_signature (message),
4779 dbus_message_get_interface (message)))
4780 {
4781 _dbus_string_free (&str);
4782 result = DBUS_HANDLER_RESULT_NEED_MEMORY;
4783 _dbus_verbose ("no memory for error string in dispatch\n");
4784 goto out;
4785 }
4786
4787 reply = dbus_message_new_error (message,
4788 found_object ? DBUS_ERROR_UNKNOWN_METHOD : DBUS_ERROR_UNKNOWN_OBJECT,
4789 _dbus_string_get_const_data (&str));
4790 _dbus_string_free (&str);
4791
4792 if (reply == NULL)
4793 {
4794 result = DBUS_HANDLER_RESULT_NEED_MEMORY;
4795 _dbus_verbose ("no memory for error reply in dispatch\n");
4796 goto out;
4797 }
4798
4799 expire_link = _dbus_list_alloc_link (reply);
4800
4801 if (expire_link == NULL)
4802 {
4803 dbus_message_unref (reply);
4804 result = DBUS_HANDLER_RESULT_NEED_MEMORY;
4805 _dbus_verbose ("no memory for error send in dispatch\n");
4806 goto out;
4807 }
4808
4809 preallocated = _dbus_connection_preallocate_send_unlocked (connection);
4810
4811 if (preallocated == NULL)
4812 {
4813 _dbus_list_free_link (expire_link);
4814 /* It's OK that this is finalized, because it hasn't been seen by
4815 * anything that could attach user callbacks */
4816 dbus_message_unref (reply);
4817 result = DBUS_HANDLER_RESULT_NEED_MEMORY;
4818 _dbus_verbose ("no memory for error send in dispatch\n");
4819 goto out;
4820 }
4821
4822 _dbus_connection_send_preallocated_unlocked_no_update (connection, preallocated,
4823 reply, NULL);
4824 /* reply will be freed when we release the lock */
4825 _dbus_list_prepend_link (&connection->expired_messages, expire_link);
4826
4827 result = DBUS_HANDLER_RESULT_HANDLED;
4828 }
4829
4830 _dbus_verbose (" done dispatching %p (%s %s %s '%s') on connection %p\n", message,
4831 dbus_message_type_to_string (dbus_message_get_type (message)),
4832 dbus_message_get_interface (message) ?
4833 dbus_message_get_interface (message) :
4834 "no interface",
4835 dbus_message_get_member (message) ?
4836 dbus_message_get_member (message) :
4837 "no member",
4838 dbus_message_get_signature (message),
4839 connection);
4840
4841 out:
4842 if (result == DBUS_HANDLER_RESULT_NEED_MEMORY)
4843 {
4844 _dbus_verbose ("out of memory\n");
4845
4846 /* Put message back, and we'll start over.
4847 * Yes this means handlers must be idempotent if they
4848 * don't return HANDLED; c'est la vie.
4849 */
4850 _dbus_connection_putback_message_link_unlocked (connection,
4851 message_link);
4852 /* now we don't want to free them */
4853 message_link = NULL;
4854 message = NULL;
4855 }
4856 else
4857 {
4858 _dbus_verbose (" ... done dispatching\n");
4859 }
4860
4861 _dbus_connection_release_dispatch (connection);
4862 HAVE_LOCK_CHECK (connection);
4863
4864 if (message != NULL)
4865 {
4866 /* We don't want this message to count in maximum message limits when
4867 * computing the dispatch status, below. We have to drop the lock
4868 * temporarily, because finalizing a message can trigger callbacks.
4869 *
4870 * We have a reference to the connection, and we don't use any cached
4871 * pointers to the connection's internals below this point, so it should
4872 * be safe to drop the lock and take it back. */
4873 CONNECTION_UNLOCK (connection);
4874 dbus_message_unref (message);
4875 CONNECTION_LOCK (connection);
4876 }
4877
4878 if (message_link != NULL)
4879 _dbus_list_free_link (message_link);
4880
4881 _dbus_verbose ("before final status update\n");
4882 status = _dbus_connection_get_dispatch_status_unlocked (connection);
4883
4884 /* unlocks and calls user code */
4885 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
4886
4887 dbus_connection_unref (connection);
4888
4889 return status;
4890 }
4891
4953 dbus_bool_t
4954 dbus_connection_set_watch_functions (DBusConnection *connection,
4955 DBusAddWatchFunction add_function,
4956 DBusRemoveWatchFunction remove_function,
4957 DBusWatchToggledFunction toggled_function,
4958 void *data,
4959 DBusFreeFunction free_data_function)
4960 {
4961 dbus_bool_t retval;
4962
4963 _dbus_return_val_if_fail (connection != NULL, FALSE);
4964
4965 CONNECTION_LOCK (connection);
4966
4967 retval = _dbus_watch_list_set_functions (connection->watches,
4968 add_function, remove_function,
4969 toggled_function,
4970 data, free_data_function);
4971
4972 CONNECTION_UNLOCK (connection);
4973
4974 return retval;
4975 }
4976
5016 dbus_bool_t
5017 dbus_connection_set_timeout_functions (DBusConnection *connection,
5018 DBusAddTimeoutFunction add_function,
5019 DBusRemoveTimeoutFunction remove_function,
5020 DBusTimeoutToggledFunction toggled_function,
5021 void *data,
5022 DBusFreeFunction free_data_function)
5023 {
5024 dbus_bool_t retval;
5025
5026 _dbus_return_val_if_fail (connection != NULL, FALSE);
5027
5028 CONNECTION_LOCK (connection);
5029
5030 retval = _dbus_timeout_list_set_functions (connection->timeouts,
5031 add_function, remove_function,
5032 toggled_function,
5033 data, free_data_function);
5034
5035 CONNECTION_UNLOCK (connection);
5036
5037 return retval;
5038 }
5039
5054 void
5055 dbus_connection_set_wakeup_main_function (DBusConnection *connection,
5056 DBusWakeupMainFunction wakeup_main_function,
5057 void *data,
5058 DBusFreeFunction free_data_function)
5059 {
5060 void *old_data;
5061 DBusFreeFunction old_free_data;
5062
5063 _dbus_return_if_fail (connection != NULL);
5064
5065 CONNECTION_LOCK (connection);
5066 old_data = connection->wakeup_main_data;
5067 old_free_data = connection->free_wakeup_main_data;
5068
5069 connection->wakeup_main_function = wakeup_main_function;
5070 connection->wakeup_main_data = data;
5071 connection->free_wakeup_main_data = free_data_function;
5072
5073 CONNECTION_UNLOCK (connection);
5074
5075 /* Callback outside the lock */
5076 if (old_free_data)
5077 (*old_free_data) (old_data);
5078 }
5079
5100 void
5101 dbus_connection_set_dispatch_status_function (DBusConnection *connection,
5102 DBusDispatchStatusFunction function,
5103 void *data,
5104 DBusFreeFunction free_data_function)
5105 {
5106 void *old_data;
5107 DBusFreeFunction old_free_data;
5108
5109 _dbus_return_if_fail (connection != NULL);
5110
5111 CONNECTION_LOCK (connection);
5112 old_data = connection->dispatch_status_data;
5113 old_free_data = connection->free_dispatch_status_data;
5114
5115 connection->dispatch_status_function = function;
5116 connection->dispatch_status_data = data;
5117 connection->free_dispatch_status_data = free_data_function;
5118
5119 CONNECTION_UNLOCK (connection);
5120
5121 /* Callback outside the lock */
5122 if (old_free_data)
5123 (*old_free_data) (old_data);
5124 }
5125
5145 dbus_bool_t
5146 dbus_connection_get_unix_fd (DBusConnection *connection,
5147 int *fd)
5148 {
5149 _dbus_return_val_if_fail (connection != NULL, FALSE);
5150 _dbus_return_val_if_fail (connection->transport != NULL, FALSE);
5151
5152 #ifdef DBUS_WIN
5153 /* FIXME do this on a lower level */
5154 return FALSE;
5155 #endif
5156
5157 return dbus_connection_get_socket(connection, fd);
5158 }
5159
5175 dbus_bool_t
5176 dbus_connection_get_socket(DBusConnection *connection,
5177 int *fd)
5178 {
5179 dbus_bool_t retval;
5180 DBusSocket s = DBUS_SOCKET_INIT;
5181
5182 _dbus_return_val_if_fail (connection != NULL, FALSE);
5183 _dbus_return_val_if_fail (connection->transport != NULL, FALSE);
5184
5185 CONNECTION_LOCK (connection);
5186
5187 retval = _dbus_transport_get_socket_fd (connection->transport, &s);
5188
5189 if (retval)
5190 {
5191 *fd = _dbus_socket_get_int (s);
5192 }
5193
5194 CONNECTION_UNLOCK (connection);
5195
5196 return retval;
5197 }
5198
5199
5222 dbus_bool_t
5223 dbus_connection_get_unix_user (DBusConnection *connection,
5224 unsigned long *uid)
5225 {
5226 dbus_bool_t result;
5227
5228 _dbus_return_val_if_fail (connection != NULL, FALSE);
5229 _dbus_return_val_if_fail (uid != NULL, FALSE);
5230
5231 CONNECTION_LOCK (connection);
5232
5233 if (!_dbus_transport_try_to_authenticate (connection->transport))
5234 result = FALSE;
5235 else
5236 result = _dbus_transport_get_unix_user (connection->transport,
5237 uid);
5238
5239 #ifdef DBUS_WIN
5240 _dbus_assert (!result);
5241 #endif
5242
5243 CONNECTION_UNLOCK (connection);
5244
5245 return result;
5246 }
5247
5258 dbus_bool_t
5259 dbus_connection_get_unix_process_id (DBusConnection *connection,
5260 unsigned long *pid)
5261 {
5262 dbus_bool_t result;
5263
5264 _dbus_return_val_if_fail (connection != NULL, FALSE);
5265 _dbus_return_val_if_fail (pid != NULL, FALSE);
5266
5267 CONNECTION_LOCK (connection);
5268
5269 if (!_dbus_transport_try_to_authenticate (connection->transport))
5270 result = FALSE;
5271 else
5272 result = _dbus_transport_get_unix_process_id (connection->transport,
5273 pid);
5274
5275 CONNECTION_UNLOCK (connection);
5276
5277 return result;
5278 }
5279
5291 dbus_bool_t
5292 dbus_connection_get_adt_audit_session_data (DBusConnection *connection,
5293 void **data,
5294 dbus_int32_t *data_size)
5295 {
5296 dbus_bool_t result;
5297
5298 _dbus_return_val_if_fail (connection != NULL, FALSE);
5299 _dbus_return_val_if_fail (data != NULL, FALSE);
5300 _dbus_return_val_if_fail (data_size != NULL, FALSE);
5301
5302 CONNECTION_LOCK (connection);
5303
5304 if (!_dbus_transport_try_to_authenticate (connection->transport))
5305 result = FALSE;
5306 else
5307 result = _dbus_transport_get_adt_audit_session_data (connection->transport,
5308 data,
5309 data_size);
5310 CONNECTION_UNLOCK (connection);
5311
5312 return result;
5313 }
5314
5337 void
5338 dbus_connection_set_unix_user_function (DBusConnection *connection,
5339 DBusAllowUnixUserFunction function,
5340 void *data,
5341 DBusFreeFunction free_data_function)
5342 {
5343 void *old_data = NULL;
5344 DBusFreeFunction old_free_function = NULL;
5345
5346 _dbus_return_if_fail (connection != NULL);
5347
5348 CONNECTION_LOCK (connection);
5349 _dbus_transport_set_unix_user_function (connection->transport,
5350 function, data, free_data_function,
5351 &old_data, &old_free_function);
5352 CONNECTION_UNLOCK (connection);
5353
5354 if (old_free_function != NULL)
5355 (* old_free_function) (old_data);
5356 }
5357
5358 /* Same calling convention as dbus_connection_get_windows_user */
5359 dbus_bool_t
5360 _dbus_connection_get_linux_security_label (DBusConnection *connection,
5361 char **label_p)
5362 {
5363 dbus_bool_t result;
5364
5365 _dbus_assert (connection != NULL);
5366 _dbus_assert (label_p != NULL);
5367
5368 CONNECTION_LOCK (connection);
5369
5370 if (!_dbus_transport_try_to_authenticate (connection->transport))
5371 result = FALSE;
5372 else
5373 result = _dbus_transport_get_linux_security_label (connection->transport,
5374 label_p);
5375 #ifndef __linux__
5376 _dbus_assert (!result);
5377 #endif
5378
5379 CONNECTION_UNLOCK (connection);
5380
5381 return result;
5382 }
5383
5415 dbus_bool_t
5416 dbus_connection_get_windows_user (DBusConnection *connection,
5417 char **windows_sid_p)
5418 {
5419 dbus_bool_t result;
5420
5421 _dbus_return_val_if_fail (connection != NULL, FALSE);
5422 _dbus_return_val_if_fail (windows_sid_p != NULL, FALSE);
5423
5424 CONNECTION_LOCK (connection);
5425
5426 if (!_dbus_transport_try_to_authenticate (connection->transport))
5427 result = FALSE;
5428 else
5429 result = _dbus_transport_get_windows_user (connection->transport,
5430 windows_sid_p);
5431
5432 #ifdef DBUS_UNIX
5433 _dbus_assert (!result);
5434 #endif
5435
5436 CONNECTION_UNLOCK (connection);
5437
5438 return result;
5439 }
5440
5462 void
5463 dbus_connection_set_windows_user_function (DBusConnection *connection,
5464 DBusAllowWindowsUserFunction function,
5465 void *data,
5466 DBusFreeFunction free_data_function)
5467 {
5468 void *old_data = NULL;
5469 DBusFreeFunction old_free_function = NULL;
5470
5471 _dbus_return_if_fail (connection != NULL);
5472
5473 CONNECTION_LOCK (connection);
5474 _dbus_transport_set_windows_user_function (connection->transport,
5475 function, data, free_data_function,
5476 &old_data, &old_free_function);
5477 CONNECTION_UNLOCK (connection);
5478
5479 if (old_free_function != NULL)
5480 (* old_free_function) (old_data);
5481 }
5482
5509 void
5510 dbus_connection_set_allow_anonymous (DBusConnection *connection,
5511 dbus_bool_t value)
5512 {
5513 _dbus_return_if_fail (connection != NULL);
5514
5515 CONNECTION_LOCK (connection);
5516 _dbus_transport_set_allow_anonymous (connection->transport, value);
5517 CONNECTION_UNLOCK (connection);
5518 }
5519
5537 void
5538 dbus_connection_set_route_peer_messages (DBusConnection *connection,
5539 dbus_bool_t value)
5540 {
5541 _dbus_return_if_fail (connection != NULL);
5542
5543 CONNECTION_LOCK (connection);
5544 connection->route_peer_messages = value;
5545 CONNECTION_UNLOCK (connection);
5546 }
5547
5569 dbus_bool_t
5570 dbus_connection_add_filter (DBusConnection *connection,
5571 DBusHandleMessageFunction function,
5572 void *user_data,
5573 DBusFreeFunction free_data_function)
5574 {
5575 DBusMessageFilter *filter;
5576
5577 _dbus_return_val_if_fail (connection != NULL, FALSE);
5578 _dbus_return_val_if_fail (function != NULL, FALSE);
5579
5580 filter = dbus_new0 (DBusMessageFilter, 1);
5581 if (filter == NULL)
5582 return FALSE;
5583
5584 _dbus_atomic_inc (&filter->refcount);
5585
5586 CONNECTION_LOCK (connection);
5587
5588 if (!_dbus_list_append (&connection->filter_list,
5589 filter))
5590 {
5591 _dbus_message_filter_unref (filter);
5592 CONNECTION_UNLOCK (connection);
5593 return FALSE;
5594 }
5595
5596 /* Fill in filter after all memory allocated,
5597 * so we don't run the free_user_data_function
5598 * if the add_filter() fails
5599 */
5600
5601 filter->function = function;
5602 filter->user_data = user_data;
5603 filter->free_user_data_function = free_data_function;
5604
5605 CONNECTION_UNLOCK (connection);
5606 return TRUE;
5607 }
5608
5621 void
5622 dbus_connection_remove_filter (DBusConnection *connection,
5623 DBusHandleMessageFunction function,
5624 void *user_data)
5625 {
5626 DBusList *link;
5627 DBusMessageFilter *filter;
5628
5629 _dbus_return_if_fail (connection != NULL);
5630 _dbus_return_if_fail (function != NULL);
5631
5632 CONNECTION_LOCK (connection);
5633
5634 filter = NULL;
5635
5636 link = _dbus_list_get_last_link (&connection->filter_list);
5637 while (link != NULL)
5638 {
5639 filter = link->data;
5640
5641 if (filter->function == function &&
5642 filter->user_data == user_data)
5643 {
5644 _dbus_list_remove_link (&connection->filter_list, link);
5645 filter->function = NULL;
5646
5647 break;
5648 }
5649
5650 link = _dbus_list_get_prev_link (&connection->filter_list, link);
5651 filter = NULL;
5652 }
5653
5654 CONNECTION_UNLOCK (connection);
5655
5656 #ifndef DBUS_DISABLE_CHECKS
5657 if (filter == NULL)
5658 {
5659 _dbus_warn_check_failed ("Attempt to remove filter function %p user data %p, but no such filter has been added\n",
5660 function, user_data);
5661 return;
5662 }
5663 #endif
5664
5665 /* Call application code */
5666 if (filter->free_user_data_function)
5667 (* filter->free_user_data_function) (filter->user_data);
5668
5669 filter->free_user_data_function = NULL;
5670 filter->user_data = NULL;
5671
5672 _dbus_message_filter_unref (filter);
5673 }
5674
5690 static dbus_bool_t
5691 _dbus_connection_register_object_path (DBusConnection *connection,
5692 dbus_bool_t fallback,
5693 const char *path,
5694 const DBusObjectPathVTable *vtable,
5695 void *user_data,
5696 DBusError *error)
5697 {
5698 char **decomposed_path;
5699 dbus_bool_t retval;
5700
5701 if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
5702 return FALSE;
5703
5704 CONNECTION_LOCK (connection);
5705
5706 retval = _dbus_object_tree_register (connection->objects,
5707 fallback,
5708 (const char **) decomposed_path, vtable,
5709 user_data, error);
5710
5711 CONNECTION_UNLOCK (connection);
5712
5713 dbus_free_string_array (decomposed_path);
5714
5715 return retval;
5716 }
5717
5730 dbus_bool_t
5731 dbus_connection_try_register_object_path (DBusConnection *connection,
5732 const char *path,
5733 const DBusObjectPathVTable *vtable,
5734 void *user_data,
5735 DBusError *error)
5736 {
5737 _dbus_return_val_if_fail (connection != NULL, FALSE);
5738 _dbus_return_val_if_fail (path != NULL, FALSE);
5739 _dbus_return_val_if_fail (path[0] == '/', FALSE);
5740 _dbus_return_val_if_fail (vtable != NULL, FALSE);
5741
5742 return _dbus_connection_register_object_path (connection, FALSE, path, vtable, user_data, error);
5743 }
5744
5760 dbus_bool_t
5761 dbus_connection_register_object_path (DBusConnection *connection,
5762 const char *path,
5763 const DBusObjectPathVTable *vtable,
5764 void *user_data)
5765 {
5766 dbus_bool_t retval;
5767 DBusError error = DBUS_ERROR_INIT;
5768
5769 _dbus_return_val_if_fail (connection != NULL, FALSE);
5770 _dbus_return_val_if_fail (path != NULL, FALSE);
5771 _dbus_return_val_if_fail (path[0] == '/', FALSE);
5772 _dbus_return_val_if_fail (vtable != NULL, FALSE);
5773
5774 retval = _dbus_connection_register_object_path (connection, FALSE, path, vtable, user_data, &error);
5775
5776 if (dbus_error_has_name (&error, DBUS_ERROR_OBJECT_PATH_IN_USE))
5777 {
5778 _dbus_warn ("%s\n", error.message);
5779 dbus_error_free (&error);
5780 return FALSE;
5781 }
5782
5783 return retval;
5784 }
5785
5800 dbus_bool_t
5801 dbus_connection_try_register_fallback (DBusConnection *connection,
5802 const char *path,
5803 const DBusObjectPathVTable *vtable,
5804 void *user_data,
5805 DBusError *error)
5806 {
5807 _dbus_return_val_if_fail (connection != NULL, FALSE);
5808 _dbus_return_val_if_fail (path != NULL, FALSE);
5809 _dbus_return_val_if_fail (path[0] == '/', FALSE);
5810 _dbus_return_val_if_fail (vtable != NULL, FALSE);
5811
5812 return _dbus_connection_register_object_path (connection, TRUE, path, vtable, user_data, error);
5813 }
5814
5832 dbus_bool_t
5833 dbus_connection_register_fallback (DBusConnection *connection,
5834 const char *path,
5835 const DBusObjectPathVTable *vtable,
5836 void *user_data)
5837 {
5838 dbus_bool_t retval;
5839 DBusError error = DBUS_ERROR_INIT;
5840
5841 _dbus_return_val_if_fail (connection != NULL, FALSE);
5842 _dbus_return_val_if_fail (path != NULL, FALSE);
5843 _dbus_return_val_if_fail (path[0] == '/', FALSE);
5844 _dbus_return_val_if_fail (vtable != NULL, FALSE);
5845
5846 retval = _dbus_connection_register_object_path (connection, TRUE, path, vtable, user_data, &error);
5847
5848 if (dbus_error_has_name (&error, DBUS_ERROR_OBJECT_PATH_IN_USE))
5849 {
5850 _dbus_warn ("%s\n", error.message);
5851 dbus_error_free (&error);
5852 return FALSE;
5853 }
5854
5855 return retval;
5856 }
5857
5867 dbus_bool_t
5868 dbus_connection_unregister_object_path (DBusConnection *connection,
5869 const char *path)
5870 {
5871 char **decomposed_path;
5872
5873 _dbus_return_val_if_fail (connection != NULL, FALSE);
5874 _dbus_return_val_if_fail (path != NULL, FALSE);
5875 _dbus_return_val_if_fail (path[0] == '/', FALSE);
5876
5877 if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
5878 return FALSE;
5879
5880 CONNECTION_LOCK (connection);
5881
5882 _dbus_object_tree_unregister_and_unlock (connection->objects, (const char **) decomposed_path);
5883
5884 dbus_free_string_array (decomposed_path);
5885
5886 return TRUE;
5887 }
5888
5899 dbus_bool_t
5900 dbus_connection_get_object_path_data (DBusConnection *connection,
5901 const char *path,
5902 void **data_p)
5903 {
5904 char **decomposed_path;
5905
5906 _dbus_return_val_if_fail (connection != NULL, FALSE);
5907 _dbus_return_val_if_fail (path != NULL, FALSE);
5908 _dbus_return_val_if_fail (data_p != NULL, FALSE);
5909
5910 *data_p = NULL;
5911
5912 if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
5913 return FALSE;
5914
5915 CONNECTION_LOCK (connection);
5916
5917 *data_p = _dbus_object_tree_get_user_data_unlocked (connection->objects, (const char**) decomposed_path);
5918
5919 CONNECTION_UNLOCK (connection);
5920
5921 dbus_free_string_array (decomposed_path);
5922
5923 return TRUE;
5924 }
5925
5936 dbus_bool_t
5937 dbus_connection_list_registered (DBusConnection *connection,
5938 const char *parent_path,
5939 char ***child_entries)
5940 {
5941 char **decomposed_path;
5942 dbus_bool_t retval;
5943 _dbus_return_val_if_fail (connection != NULL, FALSE);
5944 _dbus_return_val_if_fail (parent_path != NULL, FALSE);
5945 _dbus_return_val_if_fail (parent_path[0] == '/', FALSE);
5946 _dbus_return_val_if_fail (child_entries != NULL, FALSE);
5947
5948 if (!_dbus_decompose_path (parent_path, strlen (parent_path), &decomposed_path, NULL))
5949 return FALSE;
5950
5951 CONNECTION_LOCK (connection);
5952
5953 retval = _dbus_object_tree_list_registered_and_unlock (connection->objects,
5954 (const char **) decomposed_path,
5955 child_entries);
5956 dbus_free_string_array (decomposed_path);
5957
5958 return retval;
5959 }
5960
5961 static DBusDataSlotAllocator slot_allocator =
5962 _DBUS_DATA_SLOT_ALLOCATOR_INIT (_DBUS_LOCK_NAME (connection_slots));
5963
5978 dbus_bool_t
5979 dbus_connection_allocate_data_slot (dbus_int32_t *slot_p)
5980 {
5981 return _dbus_data_slot_allocator_alloc (&slot_allocator,
5982 slot_p);
5983 }
5984
5996 void
5997 dbus_connection_free_data_slot (dbus_int32_t *slot_p)
5998 {
5999 _dbus_return_if_fail (*slot_p >= 0);
6000
6001 _dbus_data_slot_allocator_free (&slot_allocator, slot_p);
6002 }
6003
6026 dbus_bool_t
6027 dbus_connection_set_data (DBusConnection *connection,
6028 dbus_int32_t slot,
6029 void *data,
6030 DBusFreeFunction free_data_func)
6031 {
6032 DBusFreeFunction old_free_func;
6033 void *old_data;
6034 dbus_bool_t retval;
6035
6036 _dbus_return_val_if_fail (connection != NULL, FALSE);
6037 _dbus_return_val_if_fail (slot >= 0, FALSE);
6038
6039 SLOTS_LOCK (connection);
6040
6041 retval = _dbus_data_slot_list_set (&slot_allocator,
6042 &connection->slot_list,
6043 slot, data, free_data_func,
6044 &old_free_func, &old_data);
6045
6046 SLOTS_UNLOCK (connection);
6047
6048 if (retval)
6049 {
6050 /* Do the actual free outside the connection lock */
6051 if (old_free_func)
6052 (* old_free_func) (old_data);
6053 }
6054
6055 return retval;
6056 }
6057
6075 void*
6076 dbus_connection_get_data (DBusConnection *connection,
6077 dbus_int32_t slot)
6078 {
6079 void *res;
6080
6081 _dbus_return_val_if_fail (connection != NULL, NULL);
6082 _dbus_return_val_if_fail (slot >= 0, NULL);
6083
6084 SLOTS_LOCK (connection);
6085
6086 res = _dbus_data_slot_list_get (&slot_allocator,
6087 &connection->slot_list,
6088 slot);
6089
6090 SLOTS_UNLOCK (connection);
6091
6092 return res;
6093 }
6094
6101 void
6102 dbus_connection_set_change_sigpipe (dbus_bool_t will_modify_sigpipe)
6103 {
6104 _dbus_modify_sigpipe = will_modify_sigpipe != FALSE;
6105 }
6106
6115 void
6116 dbus_connection_set_max_message_size (DBusConnection *connection,
6117 long size)
6118 {
6119 _dbus_return_if_fail (connection != NULL);
6120
6121 CONNECTION_LOCK (connection);
6122 _dbus_transport_set_max_message_size (connection->transport,
6123 size);
6124 CONNECTION_UNLOCK (connection);
6125 }
6126
6133 long
6134 dbus_connection_get_max_message_size (DBusConnection *connection)
6135 {
6136 long res;
6137
6138 _dbus_return_val_if_fail (connection != NULL, 0);
6139
6140 CONNECTION_LOCK (connection);
6141 res = _dbus_transport_get_max_message_size (connection->transport);
6142 CONNECTION_UNLOCK (connection);
6143 return res;
6144 }
6145
6154 void
6155 dbus_connection_set_max_message_unix_fds (DBusConnection *connection,
6156 long n)
6157 {
6158 _dbus_return_if_fail (connection != NULL);
6159
6160 CONNECTION_LOCK (connection);
6161 _dbus_transport_set_max_message_unix_fds (connection->transport,
6162 n);
6163 CONNECTION_UNLOCK (connection);
6164 }
6165
6172 long
6173 dbus_connection_get_max_message_unix_fds (DBusConnection *connection)
6174 {
6175 long res;
6176
6177 _dbus_return_val_if_fail (connection != NULL, 0);
6178
6179 CONNECTION_LOCK (connection);
6180 res = _dbus_transport_get_max_message_unix_fds (connection->transport);
6181 CONNECTION_UNLOCK (connection);
6182 return res;
6183 }
6184
6210 void
6211 dbus_connection_set_max_received_size (DBusConnection *connection,
6212 long size)
6213 {
6214 _dbus_return_if_fail (connection != NULL);
6215
6216 CONNECTION_LOCK (connection);
6217 _dbus_transport_set_max_received_size (connection->transport,
6218 size);
6219 CONNECTION_UNLOCK (connection);
6220 }
6221
6228 long
6229 dbus_connection_get_max_received_size (DBusConnection *connection)
6230 {
6231 long res;
6232
6233 _dbus_return_val_if_fail (connection != NULL, 0);
6234
6235 CONNECTION_LOCK (connection);
6236 res = _dbus_transport_get_max_received_size (connection->transport);
6237 CONNECTION_UNLOCK (connection);
6238 return res;
6239 }
6240
6252 void
6253 dbus_connection_set_max_received_unix_fds (DBusConnection *connection,
6254 long n)
6255 {
6256 _dbus_return_if_fail (connection != NULL);
6257
6258 CONNECTION_LOCK (connection);
6259 _dbus_transport_set_max_received_unix_fds (connection->transport,
6260 n);
6261 CONNECTION_UNLOCK (connection);
6262 }
6263
6270 long
6271 dbus_connection_get_max_received_unix_fds (DBusConnection *connection)
6272 {
6273 long res;
6274
6275 _dbus_return_val_if_fail (connection != NULL, 0);
6276
6277 CONNECTION_LOCK (connection);
6278 res = _dbus_transport_get_max_received_unix_fds (connection->transport);
6279 CONNECTION_UNLOCK (connection);
6280 return res;
6281 }
6282
6293 long
6294 dbus_connection_get_outgoing_size (DBusConnection *connection)
6295 {
6296 long res;
6297
6298 _dbus_return_val_if_fail (connection != NULL, 0);
6299
6300 CONNECTION_LOCK (connection);
6301 res = _dbus_counter_get_size_value (connection->outgoing_counter);
6302 CONNECTION_UNLOCK (connection);
6303 return res;
6304 }
6305
6306 #ifdef DBUS_ENABLE_STATS
6307 void
6308 _dbus_connection_get_stats (DBusConnection *connection,
6309 dbus_uint32_t *in_messages,
6310 dbus_uint32_t *in_bytes,
6311 dbus_uint32_t *in_fds,
6312 dbus_uint32_t *in_peak_bytes,
6313 dbus_uint32_t *in_peak_fds,
6314 dbus_uint32_t *out_messages,
6315 dbus_uint32_t *out_bytes,
6316 dbus_uint32_t *out_fds,
6317 dbus_uint32_t *out_peak_bytes,
6318 dbus_uint32_t *out_peak_fds)
6319 {
6320 CONNECTION_LOCK (connection);
6321
6322 if (in_messages != NULL)
6323 *in_messages = connection->n_incoming;
6324
6325 _dbus_transport_get_stats (connection->transport,
6326 in_bytes, in_fds, in_peak_bytes, in_peak_fds);
6327
6328 if (out_messages != NULL)
6329 *out_messages = connection->n_outgoing;
6330
6331 if (out_bytes != NULL)
6332 *out_bytes = _dbus_counter_get_size_value (connection->outgoing_counter);
6333
6334 if (out_fds != NULL)
6335 *out_fds = _dbus_counter_get_unix_fd_value (connection->outgoing_counter);
6336
6337 if (out_peak_bytes != NULL)
6338 *out_peak_bytes = _dbus_counter_get_peak_size_value (connection->outgoing_counter);
6339
6340 if (out_peak_fds != NULL)
6341 *out_peak_fds = _dbus_counter_get_peak_unix_fd_value (connection->outgoing_counter);
6342
6343 CONNECTION_UNLOCK (connection);
6344 }
6345 #endif /* DBUS_ENABLE_STATS */
6346
6354 long
6355 dbus_connection_get_outgoing_unix_fds (DBusConnection *connection)
6356 {
6357 long res;
6358
6359 _dbus_return_val_if_fail (connection != NULL, 0);
6360
6361 CONNECTION_LOCK (connection);
6362 res = _dbus_counter_get_unix_fd_value (connection->outgoing_counter);
6363 CONNECTION_UNLOCK (connection);
6364 return res;
6365 }
6366
6367 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
6368
6374 const char*
6375 _dbus_connection_get_address (DBusConnection *connection)
6376 {
6377 return _dbus_transport_get_address (connection->transport);
6378 }
6379 #endif
6380
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:302
_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:905
DBusAtomic
An atomic integer safe to increment or decrement from multiple threads.
Definition: dbus-sysdeps.h:279
_dbus_pending_call_complete
void _dbus_pending_call_complete(DBusPendingCall *pending)
Calls notifier function for the pending call and sets the call to completed.
Definition: dbus-pending-call.c:204
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:6102
dbus_message_ref
DBusMessage * dbus_message_ref(DBusMessage *message)
Increments the reference count of a DBusMessage.
Definition: dbus-message.c:1694
DBusConnection::filter_list
DBusList * filter_list
List of filters.
Definition: dbus-connection.c:284
_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:1270
DBusTimeout
Internals of DBusTimeout.
Definition: dbus-timeout.c:40
DBusMessageFilter::user_data
void * user_data
User data for the function.
Definition: dbus-connection.c:232
dbus_message_lock
void dbus_message_lock(DBusMessage *message)
Locks a message.
Definition: dbus-message.c:407
_dbus_list_get_last
void * _dbus_list_get_last(DBusList **list)
Gets the last data in the list.
Definition: dbus-list.c:596
_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&#39;s DBusWatchToggledFunction if available.
Definition: dbus-connection.c:781
_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:872
_dbus_list_prepend
dbus_bool_t _dbus_list_prepend(DBusList **list, void *data)
Prepends a value to the list.
Definition: dbus-list.c:292
DBusDispatchStatus
DBusDispatchStatus
Indicates the status of incoming data on a DBusConnection.
Definition: dbus-connection.h:79
DBusError::message
const char * message
public error message field
Definition: dbus-errors.h:51
_dbus_transport_get_address
const char * _dbus_transport_get_address(DBusTransport *transport)
Gets the address of a transport.
Definition: dbus-transport.c:859
DBusConnection::free_wakeup_main_data
DBusFreeFunction free_wakeup_main_data
free wakeup_main_data
Definition: dbus-connection.c:296
DBusWatch
Implementation of DBusWatch.
Definition: dbus-watch.c:40
NULL
#define NULL
A null pointer, defined appropriately for C or C++.
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:3693
DBusFreeFunction
void(* DBusFreeFunction)(void *memory)
The type of a function which frees a block of memory.
Definition: dbus-memory.h:64
_dbus_connection_add_timeout_unlocked
dbus_bool_t _dbus_connection_add_timeout_unlocked(DBusConnection *connection, DBusTimeout *timeout)
Adds a timeout using the connection&#39;s DBusAddTimeoutFunction if available.
Definition: dbus-connection.c:867
DBusPreallocatedSend::queue_link
DBusList * queue_link
Preallocated link in the queue.
Definition: dbus-connection.c:243
DBusConnection::have_connection_lock
unsigned int have_connection_lock
Used to check locking.
Definition: dbus-connection.c:330
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, the other end of the connection may (but is not required to) optimize by not sending method return or error replies.
Definition: dbus-message.c:3075
_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:239
_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:545
_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:338
_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:720
DBUS_DISPATCH_NEED_MEMORY
More memory is needed to continue.
Definition: dbus-connection.h:83
dbus_free
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
Definition: dbus-memory.c:701
_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:1248
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:1150
_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:240
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:5463
_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, or for a timeout.
Definition: dbus-threads.c:261
_dbus_list_get_last_link
DBusList * _dbus_list_get_last_link(DBusList **list)
Gets the last link in the list.
Definition: dbus-list.c:580
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:5416
_dbus_connection_lock
void _dbus_connection_lock(DBusConnection *connection)
Acquires the connection lock.
Definition: dbus-connection.c:388
_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:954
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:702
dbus_new
#define dbus_new(type, count)
Safe macro for using dbus_malloc().
Definition: dbus-memory.h:58
DBusConnection::disconnect_message_link
DBusList * disconnect_message_link
Preallocated list node for queueing the disconnection message.
Definition: dbus-connection.c:292
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:97
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:6116
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:5801
_dbus_list_remove_link
void _dbus_list_remove_link(DBusList **list, DBusList *link)
Removes a link from the list.
Definition: dbus-list.c:527
_dbus_timeout_list_free
void _dbus_timeout_list_free(DBusTimeoutList *timeout_list)
Frees a DBusTimeoutList.
Definition: dbus-timeout.c:211
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:6294
dbus_connection_ref
DBusConnection * dbus_connection_ref(DBusConnection *connection)
Increments the reference count of a DBusConnection.
Definition: dbus-connection.c:2683
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:3107
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:271
DBUS_TYPE_STRING
#define DBUS_TYPE_STRING
Type code marking a UTF-8 encoded, nul-terminated Unicode string.
Definition: dbus-protocol.h:102
_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:884
_dbus_timeout_list_new
DBusTimeoutList * _dbus_timeout_list_new(void)
Creates a new timeout list.
Definition: dbus-timeout.c:194
_dbus_assert
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
Definition: dbus-internals.h:148
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&#39;t want to write a main loop and deal wit...
Definition: dbus-connection.c:3803
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:315
_dbus_list_append_link
void _dbus_list_append_link(DBusList **list, DBusList *link)
Appends a link to the list.
Definition: dbus-list.c:315
DBusCounter
Internals of DBusCounter.
Definition: dbus-resources.c:54
DBUS_ERROR_INIT
#define DBUS_ERROR_INIT
Expands to a suitable initializer for a DBusError on the stack.
Definition: dbus-errors.h:62
DBusList::data
void * data
Data stored at this element.
Definition: dbus-list.h:38
DBusConnection::free_dispatch_status_data
DBusFreeFunction free_dispatch_status_data
free dispatch_status_data
Definition: dbus-connection.c:300
dbus_message_new
DBusMessage * dbus_message_new(int message_type)
Constructs a new message of the given message type.
Definition: dbus-message.c:1316
DBusMessageFilter::free_user_data_function
DBusFreeFunction free_user_data_function
Function to free the user data.
Definition: dbus-connection.c:233
DBusConnection::incoming_messages
DBusList * incoming_messages
Queue of messages we have received, end of the list received most recently.
Definition: dbus-connection.c:268
_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:258
_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:1346
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:3634
_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&#39;s DBusWatchToggledFunction if appro...
Definition: dbus-watch.c:442
_dbus_transport_queue_messages
dbus_bool_t _dbus_transport_queue_messages(DBusTransport *transport)
Processes data we&#39;ve read while handling a watch, potentially converting some of it to messages and q...
Definition: dbus-transport.c:1143
DBUS_HANDLER_RESULT_NOT_YET_HANDLED
Message has not had any effect - see if other handlers want it.
Definition: dbus-shared.h:69
_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:1416
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:2499
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:5101
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:6027
dbus_error_free
void dbus_error_free(DBusError *error)
Frees an error that&#39;s been set (or just initialized), then reinitializes the error as in dbus_error_i...
Definition: dbus-errors.c:211
_dbus_watch_list_free
void _dbus_watch_list_free(DBusWatchList *watch_list)
Frees a DBusWatchList.
Definition: dbus-watch.c:249
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.DBus.Peer interface.
Definition: dbus-connection.c:5538
_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:625
DBUS_INTERFACE_PEER
#define DBUS_INTERFACE_PEER
The interface supported by most dbus peers.
Definition: dbus-shared.h:99
_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:361
_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:2146
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:105
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:3903
DBusConnection::refcount
DBusAtomic refcount
Reference count.
Definition: dbus-connection.c:258
_dbus_counter_ref
DBusCounter * _dbus_counter_ref(DBusCounter *counter)
Increments refcount of the counter.
Definition: dbus-resources.c:116
dbus_address_entries_free
void dbus_address_entries_free(DBusAddressEntry **entries)
Frees a NULL-terminated array of address entries.
Definition: dbus-address.c:189
_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:1466
DBusPendingCall
Implementation details of DBusPendingCall - all fields are private.
Definition: dbus-pending-call.c:62
_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:53
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:5017
DBusConnection
Implementation details of DBusConnection.
Definition: dbus-connection.c:256
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:3340
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:5622
DBusMutex
struct DBusMutex DBusMutex
An opaque mutex type provided by the DBusThreadFunctions implementation installed by dbus_threads_ini...
Definition: dbus-threads.h:41
_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:117
_dbus_watch_list_new
DBusWatchList * _dbus_watch_list_new(void)
Creates a new watch list.
Definition: dbus-watch.c:232
DBusConnection::outgoing_counter
DBusCounter * outgoing_counter
Counts size of outgoing messages.
Definition: dbus-connection.c:278
DBusWatchAddFunction
dbus_bool_t(* DBusWatchAddFunction)(DBusWatchList *list, DBusWatch *watch)
Function to be called in protected_change_watch() with refcount held.
Definition: dbus-connection.c:670
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:238
_dbus_list_alloc_link
DBusList * _dbus_list_alloc_link(void *data)
Allocates a linked list node.
Definition: dbus-list.c:242
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:5223
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:5937
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:3187
_dbus_string_init
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
Definition: dbus-string.c:175
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:1451
_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:1228
_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:543
_dbus_list_remove
dbus_bool_t _dbus_list_remove(DBusList **list, void *data)
Removes a value from the list.
Definition: dbus-list.c:415
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:6211
DBusConnection::dispatch_status_function
DBusDispatchStatusFunction dispatch_status_function
Function on dispatch status changes.
Definition: dbus-connection.c:298
DBusHandlerResult
DBusHandlerResult
Results that a message handler can return.
Definition: dbus-shared.h:66
DBUS_HASH_STRING
Hash keys are strings.
Definition: dbus-hash.h:69
_dbus_connection_get_message_to_send
DBusMessage * _dbus_connection_get_message_to_send(DBusConnection *connection)
Gets the next outgoing message.
Definition: dbus-connection.c:609
_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:628
DBusHashIter
Hash iterator object.
Definition: dbus-hash.h:49
DBusMessageIter
DBusMessageIter struct; contains no public fields.
Definition: dbus-message.h:51
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:3937
_dbus_list_get_first
void * _dbus_list_get_first(DBusList **list)
Gets the first data in the list.
Definition: dbus-list.c:612
_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:480
_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:116
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:5997
DBUS_ERROR_UNKNOWN_METHOD
#define DBUS_ERROR_UNKNOWN_METHOD
Method name you invoked isn&#39;t known by the object you invoked it on.
Definition: dbus-protocol.h:397
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:3541
DBusMessageFilter
Internal struct representing a message filter function.
Definition: dbus-connection.c:228
_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, and decremented by the size/unix fds of this message when this message if finalized.
Definition: dbus-message.c:303
DBUS_PATH_LOCAL
#define DBUS_PATH_LOCAL
The object path used in local/in-process-generated messages.
Definition: dbus-shared.h:82
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:123
_dbus_list_copy
dbus_bool_t _dbus_list_copy(DBusList **list, DBusList **dest)
Copies a list.
Definition: dbus-list.c:697
_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:2379
DBusConnection::watches
DBusWatchList * watches
Stores active watches.
Definition: dbus-connection.c:281
DBusConnection::mutex
DBusRMutex * mutex
Lock on the entire DBusConnection.
Definition: dbus-connection.c:260
_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:530
_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:296
_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:1151
_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:2560
DBusCMutex
Definition: dbus-sysdeps-pthread.c:52
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:3462
DBUS_DISPATCH_DATA_REMAINS
There is more data to potentially convert to messages.
Definition: dbus-connection.h:81
DBusSocket
Socket interface.
Definition: dbus-sysdeps.h:148
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:3537
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:2661
DBusMessageFilter::refcount
DBusAtomic refcount
Reference count.
Definition: dbus-connection.c:230
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:3404
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:3167
DBusObjectPathVTable
Virtual table that must be implemented to handle a portion of the object path hierarchy.
Definition: dbus-connection.h:384
DBusMessage
Internals of DBusMessage.
Definition: dbus-message-private.h:99
_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:354
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:679
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:244
_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:1300
DBUS_HASH_INT
Hash keys are integers.
Definition: dbus-hash.h:70
_dbus_rmutex_unlock
DBUS_PRIVATE_EXPORT void _dbus_rmutex_unlock(DBusRMutex *mutex)
Unlocks a mutex.
Definition: dbus-threads.c:150
DBUS_ERROR_OBJECT_PATH_IN_USE
#define DBUS_ERROR_OBJECT_PATH_IN_USE
There&#39;s already an object with the requested object path.
Definition: dbus-protocol.h:450
dbus_new0
#define dbus_new0(type, count)
Safe macro for using dbus_malloc0().
Definition: dbus-memory.h:59
_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:1397
_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:310
_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:1502
_dbus_connection_remove_watch_unlocked
void _dbus_connection_remove_watch_unlocked(DBusConnection *connection, DBusWatch *watch)
Removes a watch using the connection&#39;s DBusRemoveWatchFunction if available.
Definition: dbus-connection.c:761
_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:1380
_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:248
DBusString
Definition: dbus-string.h:42
_dbus_hash_iter_get_value
void * _dbus_hash_iter_get_value(DBusHashIter *iter)
Gets the value of the current entry.
Definition: dbus-hash.c:613
DBusConnection::dispatch_status_data
void * dispatch_status_data
Application data for dispatch_status_function.
Definition: dbus-connection.c:299
dbus_bool_t
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
Definition: dbus-types.h:35
_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:572
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:3147
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:3721
DBusConnection::transport
DBusTransport * transport
Object that sends/receives messages over network.
Definition: dbus-connection.c:280
dbus_connection_dispatch
DBusDispatchStatus dbus_connection_dispatch(DBusConnection *connection)
Processes any incoming data.
Definition: dbus-connection.c:4577
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:3304
_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:704
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:4380
DBUS_DISPATCH_COMPLETE
All currently available data has been processed.
Definition: dbus-connection.h:82
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:110
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:6076
DBusConnection::timeouts
DBusTimeoutList * timeouts
Stores active timeouts.
Definition: dbus-connection.c:282
_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:1208
DBusTimeoutAddFunction
dbus_bool_t(* DBusTimeoutAddFunction)(DBusTimeoutList *list, DBusTimeout *timeout)
Function to be called in protected_change_timeout() with refcount held.
Definition: dbus-connection.c:794
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:6134
DBusConnection::pending_replies
DBusHashTable * pending_replies
Hash of message serials to DBusPendingCall.
Definition: dbus-connection.c:289
DBusObjectTree
Internals of DBusObjectTree.
Definition: dbus-object-tree.c:57
_dbus_warn
void _dbus_warn(const char *format,...)
Prints a warning message to stderr.
Definition: dbus-internals.c:230
_dbus_counter_unref
void _dbus_counter_unref(DBusCounter *counter)
Decrements refcount of the counter and possibly finalizes the counter.
Definition: dbus-resources.c:136
_dbus_atomic_inc
dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
Definition: dbus-sysdeps-unix.c:2753
_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:375
_dbus_list_append
dbus_bool_t _dbus_list_append(DBusList **list, void *data)
Appends a value to the list.
Definition: dbus-list.c:270
_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:1244
_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:1214
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:5259
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:2997
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:2934
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:5979
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:143
_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:221
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:313
_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:759
DBusWakeupMainFunction
void(* DBusWakeupMainFunction)(void *data)
Called when the main loop&#39;s thread should be notified that there&#39;s now work to do.
Definition: dbus-connection.h:135
_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:1114
DBusAddressEntry
Internals of DBusAddressEntry.
Definition: dbus-address.c:43
DBusConnection::outgoing_messages
DBusList * outgoing_messages
Queue of messages we need to send, send the end of the list first.
Definition: dbus-connection.c:267
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:5761
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:6155
DBusConnection::objects
DBusObjectTree * objects
Object path handlers registered with this connection.
Definition: dbus-connection.c:304
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:6355
DBusWatchRemoveFunction
void(* DBusWatchRemoveFunction)(DBusWatchList *list, DBusWatch *watch)
Function to be called in protected_change_watch() with refcount held.
Definition: dbus-connection.c:673
DBusConnection::client_serial
dbus_uint32_t client_serial
Client serial.
Definition: dbus-connection.c:291
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:6229
DBusConnection::io_path_mutex
DBusCMutex * io_path_mutex
Protects io_path_acquired.
Definition: dbus-connection.c:264
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:234
dbus_connection_open
DBusConnection * dbus_connection_open(const char *address, DBusError *error)
Gets a connection to a remote address.
Definition: dbus-connection.c:2618
_dbus_connection_unref_unlocked
void _dbus_connection_unref_unlocked(DBusConnection *connection)
Decrements the reference count of a DBusConnection.
Definition: dbus-connection.c:1442
_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:1486
_dbus_current_generation
int _dbus_current_generation
_dbus_current_generation is used to track each time that dbus_shutdown() is called, so we can reinit things after it&#39;s been called.
Definition: dbus-memory.c:781
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:3401
DBusError
Object representing an exception.
Definition: dbus-errors.h:48
_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:592
_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:387
_dbus_get_monotonic_time
void _dbus_get_monotonic_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
Definition: dbus-sysdeps-unix.c:2903
_dbus_disable_sigpipe
void _dbus_disable_sigpipe(void)
signal (SIGPIPE, SIG_IGN);
Definition: dbus-sysdeps-unix.c:3178
_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:824
_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:649
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:5900
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:1819
DBUS_ERROR_UNKNOWN_OBJECT
#define DBUS_ERROR_UNKNOWN_OBJECT
Object you invoked a method on isn&#39;t known.
Definition: dbus-protocol.h:399
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:3031
DBUS_MESSAGE_TYPE_SIGNAL
#define DBUS_MESSAGE_TYPE_SIGNAL
Message type of a signal message, see dbus_message_get_type()
Definition: dbus-protocol.h:240
_dbus_connection_add_watch_unlocked
dbus_bool_t _dbus_connection_add_watch_unlocked(DBusConnection *connection, DBusWatch *watch)
Adds a watch using the connection&#39;s DBusAddWatchFunction if available.
Definition: dbus-connection.c:743
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:354
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:1190
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:6173
DBusConnection::wakeup_main_function
DBusWakeupMainFunction wakeup_main_function
Function to wake up the mainloop.
Definition: dbus-connection.c:294
_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:2098
_dbus_cmutex_unlock
void _dbus_cmutex_unlock(DBusCMutex *mutex)
Unlocks a mutex.
Definition: dbus-threads.c:164
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:153
DBusConnection::slot_list
DBusDataSlotList slot_list
Data stored by allocated integer ID.
Definition: dbus-connection.c:287
dbus_pending_call_ref
DBusPendingCall * dbus_pending_call_ref(DBusPendingCall *pending)
Increments the reference count on a pending call.
Definition: dbus-pending-call.c:577
_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:625
_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&#39;s DBusTimeoutToggledFunction if a...
Definition: dbus-timeout.c:362
_dbus_pending_call_get_reply_serial_unlocked
dbus_uint32_t _dbus_pending_call_get_reply_serial_unlocked(DBusPendingCall *pending)
Gets the reply&#39;s serial number.
Definition: dbus-pending-call.c:293
_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:370
_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:1249
_DBUS_UNLOCK
#define _DBUS_UNLOCK(name)
Unlocks a global lock.
Definition: dbus-internals.h:369
DBusConnection::disconnected_message_arrived
unsigned int disconnected_message_arrived
We popped or are dispatching the disconnected message.
Definition: dbus-connection.c:321
_dbus_string_free
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init().
Definition: dbus-string.c:259
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:5510
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:325
_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:1313
_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:285
CONNECTION_UNLOCK
#define CONNECTION_UNLOCK(connection)
shorter and more visible way to write _dbus_connection_unlock()
Definition: dbus-pending-call.c:57
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:117
DBusConnection::route_peer_messages
unsigned int route_peer_messages
If TRUE, if org.freedesktop.DBus.Peer messages have a bus name, don&#39;t handle them automatically...
Definition: dbus-connection.c:319
TRUE
#define TRUE
Expands to "1".
_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:2573
_dbus_data_slot_list_init
void _dbus_data_slot_list_init(DBusDataSlotList *list)
Initializes a slot list.
Definition: dbus-dataslot.c:197
_dbus_assert_not_reached
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called.
Definition: dbus-internals.h:159
DBusDataSlotList
Data structure that stores the actual user data set at a given slot.
Definition: dbus-dataslot.h:69
DBusConnection::io_path_cond
DBusCondVar * io_path_cond
Notify when io_path_acquired is available.
Definition: dbus-connection.c:265
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:800
_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:199
DBusConnection::last_dispatch_status
DBusDispatchStatus last_dispatch_status
The last dispatch status we reported to the application.
Definition: dbus-connection.c:302
DBusConnection::exit_on_disconnect
unsigned int exit_on_disconnect
If TRUE, exit after handling disconnect signal.
Definition: dbus-connection.c:317
_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:930
DBUS_ERROR_FAILED
#define DBUS_ERROR_FAILED
A generic error; "something went wrong" - see the error message for more.
Definition: dbus-protocol.h:355
_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:382
_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:254
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:279
DBusError::name
const char * name
public error name field
Definition: dbus-errors.h:50
_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:1077
_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:393
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:3887
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:91
_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:278
DBUS_TYPE_UNIX_FD
#define DBUS_TYPE_UNIX_FD
Type code marking a unix file descriptor.
Definition: dbus-protocol.h:114
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:676
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:597
DBusTransport
Object representing a transport such as a socket.
Definition: dbus-transport-protected.h:80
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:103
DBusWatchList
DBusWatchList implementation details.
Definition: dbus-watch.c:214
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:3318
DBusConnection::n_incoming
int n_incoming
Length of incoming queue.
Definition: dbus-connection.c:276
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:5055
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:4093
DBusDataSlotAllocator
An allocator that tracks a set of slot IDs.
Definition: dbus-dataslot.h:55
DBUS_TYPE_INVALID
#define DBUS_TYPE_INVALID
Type code that is never equal to a legitimate type code.
Definition: dbus-protocol.h:60
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:1166
_dbus_exit
void _dbus_exit(int code)
Exit the process, returning the given value.
Definition: dbus-sysdeps-unix.c:3149
_dbus_pending_call_queue_timeout_error_unlocked
void _dbus_pending_call_queue_timeout_error_unlocked(DBusPendingCall *pending, DBusConnection *connection)
If the pending call hasn&#39;t been timed out, add its timeout error reply to the connection&#39;s incoming m...
Definition: dbus-pending-call.c:228
DBusPreallocatedSend
Internals of DBusPreallocatedSend.
Definition: dbus-connection.c:240
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:5338
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:128
_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:892
DBusPreallocatedSend::counter_link
DBusList * counter_link
Preallocated link in the resource counter.
Definition: dbus-connection.c:244
_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:92
_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&#39;s DBusRemoveWatchFunction if appropriat...
Definition: dbus-watch.c:415
dbus_pending_call_block
void dbus_pending_call_block(DBusPendingCall *pending)
Block until the pending call is completed.
Definition: dbus-pending-call.c:737
_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:1123
_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&#39;s DBusRemoveTimeoutFunction if appr...
Definition: dbus-timeout.c:340
DBusConnection::n_outgoing
int n_outgoing
Length of outgoing queue.
Definition: dbus-connection.c:275
DBusConnection::dispatch_mutex
DBusCMutex * dispatch_mutex
Protects dispatch_acquired.
Definition: dbus-connection.c:262
_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:109
_dbus_atomic_dec
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
Definition: dbus-sysdeps-unix.c:2776
_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, by timing out the pending call.
Definition: dbus-pending-call.c:172
DBusTimeoutRemoveFunction
void(* DBusTimeoutRemoveFunction)(DBusTimeoutList *list, DBusTimeout *timeout)
Function to be called in protected_change_timeout() with refcount held.
Definition: dbus-connection.c:797
DBusList
A node in a linked list.
Definition: dbus-list.h:34
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:4954
_dbus_hash_iter_init
void _dbus_hash_iter_init(DBusHashTable *table, DBusHashIter *iter)
Initializes a hash table iterator.
Definition: dbus-hash.c:517
_dbus_list_unlink
void _dbus_list_unlink(DBusList **list, DBusList *link)
Removes the given link from the list, but doesn&#39;t free it.
Definition: dbus-list.c:499
dbus_free_string_array
void dbus_free_string_array(char **str_array)
Frees a NULL-terminated array of strings.
Definition: dbus-memory.c:749
DBusHandleMessageFunction
DBusHandlerResult(* DBusHandleMessageFunction)(DBusConnection *connection, DBusMessage *message, void *user_data)
Called when a message needs to be handled.
Definition: dbus-connection.h:169
_dbus_transport_ref
DBusTransport * _dbus_transport_ref(DBusTransport *transport)
Increments the reference count for the transport.
Definition: dbus-transport.c:463
_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:727
DBusConnection::dispatch_cond
DBusCondVar * dispatch_cond
Notify when dispatch_acquired is available.
Definition: dbus-connection.c:263
_dbus_connection_remove_timeout_unlocked
void _dbus_connection_remove_timeout_unlocked(DBusConnection *connection, DBusTimeout *timeout)
Removes a timeout using the connection&#39;s DBusRemoveTimeoutFunction if available.
Definition: dbus-connection.c:885
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:5833
_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:94
_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&#39;s file descriptors and then reads/writes data as a...
Definition: dbus-transport.c:987
_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:1288
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:5292
_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:1240
DBusCondVar
Definition: dbus-sysdeps-pthread.c:56
_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:1049
_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:1074
_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:1564
DBUS_ERROR_DISCONNECTED
#define DBUS_ERROR_DISCONNECTED
The connection is disconnected and you&#39;re trying to use it.
Definition: dbus-protocol.h:389
_dbus_counter_new
DBusCounter * _dbus_counter_new(void)
Creates a new DBusCounter.
Definition: dbus-resources.c:89
_dbus_cmutex_lock
void _dbus_cmutex_lock(DBusCMutex *mutex)
Locks a mutex.
Definition: dbus-threads.c:136
_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:480
_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:1539
_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:1948
DBusMessageFilter::function
DBusHandleMessageFunction function
Function to call to filter.
Definition: dbus-connection.c:231
DBUS_ERROR_NO_MEMORY
#define DBUS_ERROR_NO_MEMORY
There was not enough memory to complete an operation.
Definition: dbus-protocol.h:357
_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:1044
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:2734
_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:1252
DBusForeachFunction
void(* DBusForeachFunction)(void *element, void *data)
Used to iterate over each item in a collection, such as a DBusList.
Definition: dbus-internals.h:283
DBusConnection::expired_messages
DBusList * expired_messages
Messages that will be released when we next unlock.
Definition: dbus-connection.c:269
_dbus_list_get_first_link
DBusList * _dbus_list_get_first_link(DBusList **list)
Gets the first link in the list.
Definition: dbus-list.c:567
FALSE
#define FALSE
Expands to "0".
dbus_message_get_type
int dbus_message_get_type(DBusMessage *message)
Gets the type of a message.
Definition: dbus-message.c:1749
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:3076
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:5146
_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:1551
_dbus_list_prepend_link
void _dbus_list_prepend_link(DBusList **list, DBusList *link)
Prepends a link to the list.
Definition: dbus-list.c:333
_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:810
_DBUS_LOCK
#define _DBUS_LOCK(name)
Locks a global lock, initializing it first if necessary.
Definition: dbus-internals.h:368
dbus_parse_address
dbus_bool_t dbus_parse_address(const char *address, DBusAddressEntry ***entry, int *array_len, DBusError *error)
Parses an address string of the form:
Definition: dbus-address.c:363
_DBUS_LOCK_NAME
#define _DBUS_LOCK_NAME(name)
Expands to name of a global lock variable.
Definition: dbus-internals.h:367
_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:846
_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:107
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:306
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:2975
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:3219
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:2819
_dbus_atomic_get
dbus_int32_t _dbus_atomic_get(DBusAtomic *atomic)
Atomically get the value of an integer.
Definition: dbus-sysdeps-unix.c:2800
DBusRMutex
Definition: dbus-sysdeps-pthread.c:48
DBusHashTable
Internals of DBusHashTable.
Definition: dbus-hash.c:168
_dbus_sleep_milliseconds
void _dbus_sleep_milliseconds(int milliseconds)
Sleeps the given number of milliseconds.
Definition: dbus-sysdeps-unix.c:3064
_dbus_object_tree_unref
void _dbus_object_tree_unref(DBusObjectTree *tree)
Decrement the reference count.
Definition: dbus-object-tree.c:143
_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:69
_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:394
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:3852
_dbus_connection_ref_unlocked
DBusConnection * _dbus_connection_ref_unlocked(DBusConnection *connection)
Increments the reference count of a DBusConnection.
Definition: dbus-connection.c:1419
DBUS_HANDLER_RESULT_HANDLED
Message has had its effect - no need to run more handlers.
Definition: dbus-shared.h:68
_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:1198
_dbus_strdup
char * _dbus_strdup(const char *str)
Duplicates a string.
Definition: dbus-internals.c:537
CONNECTION_LOCK
#define CONNECTION_LOCK(connection)
Internals of DBusPendingCall.
Definition: dbus-pending-call.c:53
DBusConnection::dispatch_acquired
dbus_bool_t dispatch_acquired
Someone has dispatch path (can drain incoming queue)
Definition: dbus-connection.c:312
_dbus_transport_disconnect
void _dbus_transport_disconnect(DBusTransport *transport)
Closes our end of the connection to a remote application.
Definition: dbus-transport.c:505
_dbus_pending_call_get_timeout_unlocked
DBusTimeout * _dbus_pending_call_get_timeout_unlocked(DBusPendingCall *pending)
Retrives the timeout.
Definition: dbus-pending-call.c:279
_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:154
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:5570
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:5868
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:6271
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:5731
_dbus_connection_unlock
void _dbus_connection_unlock(DBusConnection *connection)
Releases the connection lock.
Definition: dbus-connection.c:399
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:4782
_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:1202
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:1717
DBusConnection::wakeup_main_data
void * wakeup_main_data
Application data for wakeup_main_function.
Definition: dbus-connection.c:295
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:70
dbus_connection_flush
void dbus_connection_flush(DBusConnection *connection)
Blocks until the outgoing message queue is empty.
Definition: dbus-connection.c:3643
_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:224
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:588
_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:77
_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:457
_dbus_transport_get_dispatch_status
DBusDispatchStatus _dbus_transport_get_dispatch_status(DBusTransport *transport)
Reports our current dispatch status (whether there&#39;s buffered data to be queued as messages...
Definition: dbus-transport.c:1104
_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:263
DBusPreallocatedSend::connection
DBusConnection * connection
Connection we&#39;d send the message to.
Definition: dbus-connection.c:242
_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:323
_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&#39;s DBusTimeoutToggledFunction if available...
Definition: dbus-connection.c:905
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:383
_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:1215
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:6253
_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:285
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:5176
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:3193
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:277
DBusTimeoutList
DBusTimeoutList implementation details.
Definition: dbus-timeout.c:176
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:1400
DBusConnection::slot_mutex
DBusRMutex * slot_mutex
Lock on slot_list so overall connection lock need not be taken.
Definition: dbus-connection.c:286
_dbus_transport_unref
void _dbus_transport_unref(DBusTransport *transport)
Decrements the reference count for the transport.
Definition: dbus-transport.c:480
_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:286
_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:340
_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:542
dbus_timeout_get_interval
DBUS_EXPORT int dbus_timeout_get_interval(DBusTimeout *timeout)
Gets the timeout interval.
Definition: dbus-timeout.c:416
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&#39;t want to write a main loop and deal wit...
Definition: dbus-connection.c:3771
_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:274
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:1497