D-Bus  1.10.32
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 
224 
229 {
232  void *user_data;
234 };
235 
236 
241 {
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 
257 {
291  dbus_uint32_t client_serial;
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  */
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;
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
389 {
390  CONNECTION_LOCK (connection);
391 }
392 
398 void
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
481  DBusList *link)
482 {
483  DBusPendingCall *pending;
484  dbus_uint32_t reply_serial;
485  DBusMessage *message;
486 
488 
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  {
504 
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,
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),
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
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 
573 {
574  HAVE_LOCK_CHECK (connection);
575  return connection->outgoing_messages != NULL;
576 }
577 
589 {
590  dbus_bool_t v;
591 
592  _dbus_return_val_if_fail (connection != NULL, FALSE);
593 
594  CONNECTION_LOCK (connection);
596  CONNECTION_UNLOCK (connection);
597 
598  return v;
599 }
600 
610 {
611  HAVE_LOCK_CHECK (connection);
612 
613  return _dbus_list_get_last (&connection->outgoing_messages);
614 }
615 
624 void
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,
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 
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 
744  DBusWatch *watch)
745 {
746  return protected_change_watch (connection, watch,
748  NULL, NULL, FALSE);
749 }
750 
760 void
762  DBusWatch *watch)
763 {
764  protected_change_watch (connection, watch,
765  NULL,
767  NULL, FALSE);
768 }
769 
780 void
782  DBusWatch *watch,
783  dbus_bool_t enabled)
784 {
785  _dbus_assert (watch != NULL);
786 
787  protected_change_watch (connection, watch,
788  NULL, NULL,
790  enabled);
791 }
792 
795  DBusTimeout *timeout);
798  DBusTimeout *timeout);
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 
868  DBusTimeout *timeout)
869 {
870  return protected_change_timeout (connection, timeout,
872  NULL, NULL, FALSE);
873 }
874 
884 void
886  DBusTimeout *timeout)
887 {
888  protected_change_timeout (connection, timeout,
889  NULL,
891  NULL, FALSE);
892 }
893 
904 void
906  DBusTimeout *timeout,
907  dbus_bool_t enabled)
908 {
909  protected_change_timeout (connection, timeout,
910  NULL, NULL,
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 
936  reply_serial,
937  pending))
938  {
939  _dbus_connection_remove_timeout_unlocked (connection, timeout);
940 
942  HAVE_LOCK_CHECK (connection);
943  return FALSE;
944  }
945 
947  }
948  else
949  {
951  reply_serial,
952  pending))
953  {
954  HAVE_LOCK_CHECK (connection);
955  return FALSE;
956  }
957  }
958 
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 
982  {
985 
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);
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  */
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  */
1025 
1029 
1031 
1033 }
1034 
1043 void
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
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,
1222  {
1223  _dbus_verbose ("pending call completed while acquiring I/O path (reply found in queue)");
1224  }
1225  else
1226  {
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 
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 =
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 
1293  if (connection->io_path_mutex == NULL)
1294  goto error;
1295 
1297  if (connection->dispatch_mutex == NULL)
1298  goto error;
1299 
1301  if (connection->dispatch_cond == NULL)
1302  goto error;
1303 
1305  if (connection->io_path_cond == NULL)
1306  goto error;
1307 
1309  if (connection->slot_mutex == NULL)
1310  goto error;
1311 
1312  disconnect_message = dbus_message_new_signal (DBUS_PATH_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)
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  {
1387  _dbus_rmutex_free_at_location (&connection->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 
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
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 
1468 dbus_uint32_t
1470 {
1471  dbus_uint32_t serial;
1472 
1473  serial = connection->client_serial++;
1474 
1475  if (connection->client_serial == 0)
1476  connection->client_serial = 1;
1477 
1478  return serial;
1479 }
1480 
1496  unsigned int condition,
1497  void *data)
1498 {
1499  DBusConnection *connection;
1500  dbus_bool_t retval;
1501  DBusDispatchStatus status;
1502 
1503  connection = data;
1504 
1505  _dbus_verbose ("start\n");
1506 
1507  CONNECTION_LOCK (connection);
1508 
1509  if (!_dbus_connection_acquire_io_path (connection, 1))
1510  {
1511  /* another thread is handling the message */
1512  CONNECTION_UNLOCK (connection);
1513  return TRUE;
1514  }
1515 
1516  HAVE_LOCK_CHECK (connection);
1517  retval = _dbus_transport_handle_watch (connection->transport,
1518  watch, condition);
1519 
1520  _dbus_connection_release_io_path (connection);
1521 
1522  HAVE_LOCK_CHECK (connection);
1523 
1524  _dbus_verbose ("middle\n");
1525 
1526  status = _dbus_connection_get_dispatch_status_unlocked (connection);
1527 
1528  /* this calls out to user code */
1529  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
1530 
1531  _dbus_verbose ("end\n");
1532 
1533  return retval;
1534 }
1535 
1536 /* Protected by _DBUS_LOCK (shared_connections) */
1537 static DBusHashTable *shared_connections = NULL;
1538 static DBusList *shared_connections_no_guid = NULL;
1539 
1540 static void
1541 close_connection_on_shutdown (DBusConnection *connection)
1542 {
1543  DBusMessage *message;
1544 
1545  dbus_connection_ref (connection);
1547 
1548  /* Churn through to the Disconnected message */
1549  while ((message = dbus_connection_pop_message (connection)))
1550  {
1551  dbus_message_unref (message);
1552  }
1553  dbus_connection_unref (connection);
1554 }
1555 
1556 static void
1557 shared_connections_shutdown (void *data)
1558 {
1559  int n_entries;
1560 
1561  if (!_DBUS_LOCK (shared_connections))
1562  {
1563  /* We'd have initialized locks before adding anything, so there
1564  * can't be anything there. */
1565  return;
1566  }
1567 
1568  /* This is a little bit unpleasant... better ideas? */
1569  while ((n_entries = _dbus_hash_table_get_n_entries (shared_connections)) > 0)
1570  {
1571  DBusConnection *connection;
1572  DBusHashIter iter;
1573 
1574  _dbus_hash_iter_init (shared_connections, &iter);
1575  _dbus_hash_iter_next (&iter);
1576 
1577  connection = _dbus_hash_iter_get_value (&iter);
1578 
1579  _DBUS_UNLOCK (shared_connections);
1580  close_connection_on_shutdown (connection);
1581  if (!_DBUS_LOCK (shared_connections))
1582  _dbus_assert_not_reached ("global locks were already initialized");
1583 
1584  /* The connection should now be dead and not in our hash ... */
1585  _dbus_assert (_dbus_hash_table_get_n_entries (shared_connections) < n_entries);
1586  }
1587 
1588  _dbus_assert (_dbus_hash_table_get_n_entries (shared_connections) == 0);
1589 
1590  _dbus_hash_table_unref (shared_connections);
1591  shared_connections = NULL;
1592 
1593  if (shared_connections_no_guid != NULL)
1594  {
1595  DBusConnection *connection;
1596  connection = _dbus_list_pop_first (&shared_connections_no_guid);
1597  while (connection != NULL)
1598  {
1599  _DBUS_UNLOCK (shared_connections);
1600  close_connection_on_shutdown (connection);
1601  if (!_DBUS_LOCK (shared_connections))
1602  _dbus_assert_not_reached ("global locks were already initialized");
1603  connection = _dbus_list_pop_first (&shared_connections_no_guid);
1604  }
1605  }
1606 
1607  shared_connections_no_guid = NULL;
1608 
1609  _DBUS_UNLOCK (shared_connections);
1610 }
1611 
1612 static dbus_bool_t
1613 connection_lookup_shared (DBusAddressEntry *entry,
1614  DBusConnection **result)
1615 {
1616  _dbus_verbose ("checking for existing connection\n");
1617 
1618  *result = NULL;
1619 
1620  if (!_DBUS_LOCK (shared_connections))
1621  {
1622  /* If it was shared, we'd have initialized global locks when we put
1623  * it in shared_connections. */
1624  return FALSE;
1625  }
1626 
1627  if (shared_connections == NULL)
1628  {
1629  _dbus_verbose ("creating shared_connections hash table\n");
1630 
1631  shared_connections = _dbus_hash_table_new (DBUS_HASH_STRING,
1632  dbus_free,
1633  NULL);
1634  if (shared_connections == NULL)
1635  {
1636  _DBUS_UNLOCK (shared_connections);
1637  return FALSE;
1638  }
1639 
1640  if (!_dbus_register_shutdown_func (shared_connections_shutdown, NULL))
1641  {
1642  _dbus_hash_table_unref (shared_connections);
1643  shared_connections = NULL;
1644  _DBUS_UNLOCK (shared_connections);
1645  return FALSE;
1646  }
1647 
1648  _dbus_verbose (" successfully created shared_connections\n");
1649 
1650  _DBUS_UNLOCK (shared_connections);
1651  return TRUE; /* no point looking up in the hash we just made */
1652  }
1653  else
1654  {
1655  const char *guid;
1656 
1657  guid = dbus_address_entry_get_value (entry, "guid");
1658 
1659  if (guid != NULL)
1660  {
1661  DBusConnection *connection;
1662 
1663  connection = _dbus_hash_table_lookup_string (shared_connections,
1664  guid);
1665 
1666  if (connection)
1667  {
1668  /* The DBusConnection can't be finalized without taking
1669  * the shared_connections lock to remove it from the
1670  * hash. So it's safe to ref the connection here.
1671  * However, it may be disconnected if the Disconnected
1672  * message hasn't been processed yet, in which case we
1673  * want to pretend it isn't in the hash and avoid
1674  * returning it.
1675  *
1676  * The idea is to avoid ever returning a disconnected connection
1677  * from dbus_connection_open(). We could just synchronously
1678  * drop our shared ref to the connection on connection disconnect,
1679  * and then assert here that the connection is connected, but
1680  * that causes reentrancy headaches.
1681  */
1682  CONNECTION_LOCK (connection);
1683  if (_dbus_connection_get_is_connected_unlocked (connection))
1684  {
1685  _dbus_connection_ref_unlocked (connection);
1686  *result = connection;
1687  _dbus_verbose ("looked up existing connection to server guid %s\n",
1688  guid);
1689  }
1690  else
1691  {
1692  _dbus_verbose ("looked up existing connection to server guid %s but it was disconnected so ignoring it\n",
1693  guid);
1694  }
1695  CONNECTION_UNLOCK (connection);
1696  }
1697  }
1698 
1699  _DBUS_UNLOCK (shared_connections);
1700  return TRUE;
1701  }
1702 }
1703 
1704 static dbus_bool_t
1705 connection_record_shared_unlocked (DBusConnection *connection,
1706  const char *guid)
1707 {
1708  char *guid_key;
1709  char *guid_in_connection;
1710 
1711  HAVE_LOCK_CHECK (connection);
1712  _dbus_assert (connection->server_guid == NULL);
1713  _dbus_assert (connection->shareable);
1714 
1715  /* get a hard ref on this connection, even if
1716  * we won't in fact store it in the hash, we still
1717  * need to hold a ref on it until it's disconnected.
1718  */
1719  _dbus_connection_ref_unlocked (connection);
1720 
1721  if (guid == NULL)
1722  {
1723  if (!_DBUS_LOCK (shared_connections))
1724  return FALSE;
1725 
1726  if (!_dbus_list_prepend (&shared_connections_no_guid, connection))
1727  {
1728  _DBUS_UNLOCK (shared_connections);
1729  return FALSE;
1730  }
1731 
1732  _DBUS_UNLOCK (shared_connections);
1733  return TRUE; /* don't store in the hash */
1734  }
1735 
1736  /* A separate copy of the key is required in the hash table, because
1737  * we don't have a lock on the connection when we are doing a hash
1738  * lookup.
1739  */
1740 
1741  guid_key = _dbus_strdup (guid);
1742  if (guid_key == NULL)
1743  return FALSE;
1744 
1745  guid_in_connection = _dbus_strdup (guid);
1746  if (guid_in_connection == NULL)
1747  {
1748  dbus_free (guid_key);
1749  return FALSE;
1750  }
1751 
1752  if (!_DBUS_LOCK (shared_connections))
1753  {
1754  dbus_free (guid_in_connection);
1755  dbus_free (guid_key);
1756  return FALSE;
1757  }
1758 
1759  _dbus_assert (shared_connections != NULL);
1760 
1761  if (!_dbus_hash_table_insert_string (shared_connections,
1762  guid_key, connection))
1763  {
1764  dbus_free (guid_key);
1765  dbus_free (guid_in_connection);
1766  _DBUS_UNLOCK (shared_connections);
1767  return FALSE;
1768  }
1769 
1770  connection->server_guid = guid_in_connection;
1771 
1772  _dbus_verbose ("stored connection to %s to be shared\n",
1773  connection->server_guid);
1774 
1775  _DBUS_UNLOCK (shared_connections);
1776 
1777  _dbus_assert (connection->server_guid != NULL);
1778 
1779  return TRUE;
1780 }
1781 
1782 static void
1783 connection_forget_shared_unlocked (DBusConnection *connection)
1784 {
1785  HAVE_LOCK_CHECK (connection);
1786 
1787  if (!connection->shareable)
1788  return;
1789 
1790  if (!_DBUS_LOCK (shared_connections))
1791  {
1792  /* If it was shared, we'd have initialized global locks when we put
1793  * it in the table; so it can't be there. */
1794  return;
1795  }
1796 
1797  if (connection->server_guid != NULL)
1798  {
1799  _dbus_verbose ("dropping connection to %s out of the shared table\n",
1800  connection->server_guid);
1801 
1802  if (!_dbus_hash_table_remove_string (shared_connections,
1803  connection->server_guid))
1804  _dbus_assert_not_reached ("connection was not in the shared table");
1805 
1806  dbus_free (connection->server_guid);
1807  connection->server_guid = NULL;
1808  }
1809  else
1810  {
1811  _dbus_list_remove (&shared_connections_no_guid, connection);
1812  }
1813 
1814  _DBUS_UNLOCK (shared_connections);
1815 
1816  /* remove our reference held on all shareable connections */
1817  _dbus_connection_unref_unlocked (connection);
1818 }
1819 
1820 static DBusConnection*
1821 connection_try_from_address_entry (DBusAddressEntry *entry,
1822  DBusError *error)
1823 {
1824  DBusTransport *transport;
1825  DBusConnection *connection;
1826 
1827  transport = _dbus_transport_open (entry, error);
1828 
1829  if (transport == NULL)
1830  {
1831  _DBUS_ASSERT_ERROR_IS_SET (error);
1832  return NULL;
1833  }
1834 
1835  connection = _dbus_connection_new_for_transport (transport);
1836 
1837  _dbus_transport_unref (transport);
1838 
1839  if (connection == NULL)
1840  {
1841  _DBUS_SET_OOM (error);
1842  return NULL;
1843  }
1844 
1845 #ifndef DBUS_DISABLE_CHECKS
1846  _dbus_assert (!connection->have_connection_lock);
1847 #endif
1848  return connection;
1849 }
1850 
1851 /*
1852  * If the shared parameter is true, then any existing connection will
1853  * be used (and if a new connection is created, it will be available
1854  * for use by others). If the shared parameter is false, a new
1855  * connection will always be created, and the new connection will
1856  * never be returned to other callers.
1857  *
1858  * @param address the address
1859  * @param shared whether the connection is shared or private
1860  * @param error error return
1861  * @returns the connection or #NULL on error
1862  */
1863 static DBusConnection*
1864 _dbus_connection_open_internal (const char *address,
1865  dbus_bool_t shared,
1866  DBusError *error)
1867 {
1868  DBusConnection *connection;
1869  DBusAddressEntry **entries;
1870  DBusError tmp_error = DBUS_ERROR_INIT;
1871  DBusError first_error = DBUS_ERROR_INIT;
1872  int len, i;
1873 
1874  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1875 
1876  _dbus_verbose ("opening %s connection to: %s\n",
1877  shared ? "shared" : "private", address);
1878 
1879  if (!dbus_parse_address (address, &entries, &len, error))
1880  return NULL;
1881 
1882  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1883 
1884  connection = NULL;
1885 
1886  for (i = 0; i < len; i++)
1887  {
1888  if (shared)
1889  {
1890  if (!connection_lookup_shared (entries[i], &connection))
1891  _DBUS_SET_OOM (&tmp_error);
1892  }
1893 
1894  if (connection == NULL)
1895  {
1896  connection = connection_try_from_address_entry (entries[i],
1897  &tmp_error);
1898 
1899  if (connection != NULL && shared)
1900  {
1901  const char *guid;
1902 
1903  connection->shareable = TRUE;
1904 
1905  /* guid may be NULL */
1906  guid = dbus_address_entry_get_value (entries[i], "guid");
1907 
1908  CONNECTION_LOCK (connection);
1909 
1910  if (!connection_record_shared_unlocked (connection, guid))
1911  {
1912  _DBUS_SET_OOM (&tmp_error);
1913  _dbus_connection_close_possibly_shared_and_unlock (connection);
1914  dbus_connection_unref (connection);
1915  connection = NULL;
1916  }
1917  else
1918  CONNECTION_UNLOCK (connection);
1919  }
1920  }
1921 
1922  if (connection)
1923  break;
1924 
1925  _DBUS_ASSERT_ERROR_IS_SET (&tmp_error);
1926 
1927  if (i == 0)
1928  dbus_move_error (&tmp_error, &first_error);
1929  else
1930  dbus_error_free (&tmp_error);
1931  }
1932 
1933  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1934  _DBUS_ASSERT_ERROR_IS_CLEAR (&tmp_error);
1935 
1936  if (connection == NULL)
1937  {
1938  _DBUS_ASSERT_ERROR_IS_SET (&first_error);
1939  dbus_move_error (&first_error, error);
1940  }
1941  else
1942  dbus_error_free (&first_error);
1943 
1944  dbus_address_entries_free (entries);
1945  return connection;
1946 }
1947 
1956 void
1958 {
1959  _dbus_assert (connection != NULL);
1960  _dbus_assert (connection->generation == _dbus_current_generation);
1961 
1962  CONNECTION_LOCK (connection);
1963  _dbus_connection_close_possibly_shared_and_unlock (connection);
1964 }
1965 
1966 static DBusPreallocatedSend*
1967 _dbus_connection_preallocate_send_unlocked (DBusConnection *connection)
1968 {
1969  DBusPreallocatedSend *preallocated;
1970 
1971  HAVE_LOCK_CHECK (connection);
1972 
1973  _dbus_assert (connection != NULL);
1974 
1975  preallocated = dbus_new (DBusPreallocatedSend, 1);
1976  if (preallocated == NULL)
1977  return NULL;
1978 
1979  preallocated->queue_link = _dbus_list_alloc_link (NULL);
1980  if (preallocated->queue_link == NULL)
1981  goto failed_0;
1982 
1983  preallocated->counter_link = _dbus_list_alloc_link (connection->outgoing_counter);
1984  if (preallocated->counter_link == NULL)
1985  goto failed_1;
1986 
1987  _dbus_counter_ref (preallocated->counter_link->data);
1988 
1989  preallocated->connection = connection;
1990 
1991  return preallocated;
1992 
1993  failed_1:
1994  _dbus_list_free_link (preallocated->queue_link);
1995  failed_0:
1996  dbus_free (preallocated);
1997 
1998  return NULL;
1999 }
2000 
2001 /* Called with lock held, does not update dispatch status */
2002 static void
2003 _dbus_connection_send_preallocated_unlocked_no_update (DBusConnection *connection,
2004  DBusPreallocatedSend *preallocated,
2005  DBusMessage *message,
2006  dbus_uint32_t *client_serial)
2007 {
2008  dbus_uint32_t serial;
2009 
2010  preallocated->queue_link->data = message;
2012  preallocated->queue_link);
2013 
2014  /* It's OK that we'll never call the notify function, because for the
2015  * outgoing limit, there isn't one */
2017  preallocated->counter_link);
2018 
2019  dbus_free (preallocated);
2020  preallocated = NULL;
2021 
2022  dbus_message_ref (message);
2023 
2024  connection->n_outgoing += 1;
2025 
2026  _dbus_verbose ("Message %p (%s %s %s %s '%s') for %s added to outgoing queue %p, %d pending to send\n",
2027  message,
2029  dbus_message_get_path (message) ?
2030  dbus_message_get_path (message) :
2031  "no path",
2032  dbus_message_get_interface (message) ?
2033  dbus_message_get_interface (message) :
2034  "no interface",
2035  dbus_message_get_member (message) ?
2036  dbus_message_get_member (message) :
2037  "no member",
2038  dbus_message_get_signature (message),
2039  dbus_message_get_destination (message) ?
2040  dbus_message_get_destination (message) :
2041  "null",
2042  connection,
2043  connection->n_outgoing);
2044 
2045  if (dbus_message_get_serial (message) == 0)
2046  {
2047  serial = _dbus_connection_get_next_client_serial (connection);
2048  dbus_message_set_serial (message, serial);
2049  if (client_serial)
2050  *client_serial = serial;
2051  }
2052  else
2053  {
2054  if (client_serial)
2055  *client_serial = dbus_message_get_serial (message);
2056  }
2057 
2058  _dbus_verbose ("Message %p serial is %u\n",
2059  message, dbus_message_get_serial (message));
2060 
2061  dbus_message_lock (message);
2062 
2063  /* Now we need to run an iteration to hopefully just write the messages
2064  * out immediately, and otherwise get them queued up
2065  */
2067  NULL,
2068  DBUS_ITERATION_DO_WRITING,
2069  -1);
2070 
2071  /* If stuff is still queued up, be sure we wake up the main loop */
2072  if (connection->n_outgoing > 0)
2073  _dbus_connection_wakeup_mainloop (connection);
2074 }
2075 
2076 static void
2077 _dbus_connection_send_preallocated_and_unlock (DBusConnection *connection,
2078  DBusPreallocatedSend *preallocated,
2079  DBusMessage *message,
2080  dbus_uint32_t *client_serial)
2081 {
2082  DBusDispatchStatus status;
2083 
2084  HAVE_LOCK_CHECK (connection);
2085 
2086  _dbus_connection_send_preallocated_unlocked_no_update (connection,
2087  preallocated,
2088  message, client_serial);
2089 
2090  _dbus_verbose ("middle\n");
2091  status = _dbus_connection_get_dispatch_status_unlocked (connection);
2092 
2093  /* this calls out to user code */
2094  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2095 }
2096 
2108  DBusMessage *message,
2109  dbus_uint32_t *client_serial)
2110 {
2111  DBusPreallocatedSend *preallocated;
2112 
2113  _dbus_assert (connection != NULL);
2114  _dbus_assert (message != NULL);
2115 
2116  preallocated = _dbus_connection_preallocate_send_unlocked (connection);
2117  if (preallocated == NULL)
2118  {
2119  CONNECTION_UNLOCK (connection);
2120  return FALSE;
2121  }
2122 
2123  _dbus_connection_send_preallocated_and_unlock (connection,
2124  preallocated,
2125  message,
2126  client_serial);
2127  return TRUE;
2128 }
2129 
2154 void
2156 {
2157  dbus_int32_t refcount;
2158 
2159  CONNECTION_LOCK (connection);
2160 
2161  refcount = _dbus_atomic_get (&connection->refcount);
2162  /* The caller should have at least one ref */
2163  _dbus_assert (refcount >= 1);
2164 
2165  if (refcount == 1)
2166  _dbus_connection_close_possibly_shared_and_unlock (connection);
2167  else
2168  CONNECTION_UNLOCK (connection);
2169 }
2170 
2171 
2181 static void
2182 _dbus_memory_pause_based_on_timeout (int timeout_milliseconds)
2183 {
2184  if (timeout_milliseconds == -1)
2185  _dbus_sleep_milliseconds (1000);
2186  else if (timeout_milliseconds < 100)
2187  ; /* just busy loop */
2188  else if (timeout_milliseconds <= 1000)
2189  _dbus_sleep_milliseconds (timeout_milliseconds / 3);
2190  else
2191  _dbus_sleep_milliseconds (1000);
2192 }
2193 
2194 static DBusMessage *
2195 generate_local_error_message (dbus_uint32_t serial,
2196  char *error_name,
2197  char *error_msg)
2198 {
2199  DBusMessage *message;
2201  if (!message)
2202  goto out;
2203 
2204  if (!dbus_message_set_error_name (message, error_name))
2205  {
2206  dbus_message_unref (message);
2207  message = NULL;
2208  goto out;
2209  }
2210 
2211  dbus_message_set_no_reply (message, TRUE);
2212 
2213  if (!dbus_message_set_reply_serial (message,
2214  serial))
2215  {
2216  dbus_message_unref (message);
2217  message = NULL;
2218  goto out;
2219  }
2220 
2221  if (error_msg != NULL)
2222  {
2223  DBusMessageIter iter;
2224 
2225  dbus_message_iter_init_append (message, &iter);
2226  if (!dbus_message_iter_append_basic (&iter,
2228  &error_msg))
2229  {
2230  dbus_message_unref (message);
2231  message = NULL;
2232  goto out;
2233  }
2234  }
2235 
2236  out:
2237  return message;
2238 }
2239 
2240 /*
2241  * Peek the incoming queue to see if we got reply for a specific serial
2242  */
2243 static dbus_bool_t
2244 _dbus_connection_peek_for_reply_unlocked (DBusConnection *connection,
2245  dbus_uint32_t client_serial)
2246 {
2247  DBusList *link;
2248  HAVE_LOCK_CHECK (connection);
2249 
2250  link = _dbus_list_get_first_link (&connection->incoming_messages);
2251 
2252  while (link != NULL)
2253  {
2254  DBusMessage *reply = link->data;
2255 
2256  if (dbus_message_get_reply_serial (reply) == client_serial)
2257  {
2258  _dbus_verbose ("%s reply to %d found in queue\n", _DBUS_FUNCTION_NAME, client_serial);
2259  return TRUE;
2260  }
2261  link = _dbus_list_get_next_link (&connection->incoming_messages, link);
2262  }
2263 
2264  return FALSE;
2265 }
2266 
2267 /* This is slightly strange since we can pop a message here without
2268  * the dispatch lock.
2269  */
2270 static DBusMessage*
2271 check_for_reply_unlocked (DBusConnection *connection,
2272  dbus_uint32_t client_serial)
2273 {
2274  DBusList *link;
2275 
2276  HAVE_LOCK_CHECK (connection);
2277 
2278  link = _dbus_list_get_first_link (&connection->incoming_messages);
2279 
2280  while (link != NULL)
2281  {
2282  DBusMessage *reply = link->data;
2283 
2284  if (dbus_message_get_reply_serial (reply) == client_serial)
2285  {
2286  _dbus_list_remove_link (&connection->incoming_messages, link);
2287  connection->n_incoming -= 1;
2288  return reply;
2289  }
2290  link = _dbus_list_get_next_link (&connection->incoming_messages, link);
2291  }
2292 
2293  return NULL;
2294 }
2295 
2296 static void
2297 connection_timeout_and_complete_all_pending_calls_unlocked (DBusConnection *connection)
2298 {
2299  /* We can't iterate over the hash in the normal way since we'll be
2300  * dropping the lock for each item. So we restart the
2301  * iter each time as we drain the hash table.
2302  */
2303 
2304  while (_dbus_hash_table_get_n_entries (connection->pending_replies) > 0)
2305  {
2306  DBusPendingCall *pending;
2307  DBusHashIter iter;
2308 
2309  _dbus_hash_iter_init (connection->pending_replies, &iter);
2310  _dbus_hash_iter_next (&iter);
2311 
2312  pending = _dbus_hash_iter_get_value (&iter);
2314 
2316  connection);
2317 
2323 
2325  CONNECTION_LOCK (connection);
2326  }
2327  HAVE_LOCK_CHECK (connection);
2328 }
2329 
2330 static void
2331 complete_pending_call_and_unlock (DBusConnection *connection,
2332  DBusPendingCall *pending,
2333  DBusMessage *message)
2334 {
2335  _dbus_pending_call_set_reply_unlocked (pending, message);
2336  _dbus_pending_call_ref_unlocked (pending); /* in case there's no app with a ref held */
2337  _dbus_connection_detach_pending_call_and_unlock (connection, pending);
2338 
2339  /* Must be called unlocked since it invokes app callback */
2340  _dbus_pending_call_complete (pending);
2341  dbus_pending_call_unref (pending);
2342 }
2343 
2344 static dbus_bool_t
2345 check_for_reply_and_update_dispatch_unlocked (DBusConnection *connection,
2346  DBusPendingCall *pending)
2347 {
2348  DBusMessage *reply;
2349  DBusDispatchStatus status;
2350 
2351  reply = check_for_reply_unlocked (connection,
2353  if (reply != NULL)
2354  {
2355  _dbus_verbose ("checked for reply\n");
2356 
2357  _dbus_verbose ("dbus_connection_send_with_reply_and_block(): got reply\n");
2358 
2359  complete_pending_call_and_unlock (connection, pending, reply);
2360  dbus_message_unref (reply);
2361 
2362  CONNECTION_LOCK (connection);
2363  status = _dbus_connection_get_dispatch_status_unlocked (connection);
2364  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2365  dbus_pending_call_unref (pending);
2366 
2367  return TRUE;
2368  }
2369 
2370  return FALSE;
2371 }
2372 
2387 void
2389 {
2390  long start_tv_sec, start_tv_usec;
2391  long tv_sec, tv_usec;
2392  DBusDispatchStatus status;
2393  DBusConnection *connection;
2394  dbus_uint32_t client_serial;
2395  DBusTimeout *timeout;
2396  int timeout_milliseconds, elapsed_milliseconds;
2397 
2398  _dbus_assert (pending != NULL);
2399 
2400  if (dbus_pending_call_get_completed (pending))
2401  return;
2402 
2403  dbus_pending_call_ref (pending); /* necessary because the call could be canceled */
2404 
2405  connection = _dbus_pending_call_get_connection_and_lock (pending);
2406 
2407  /* Flush message queue - note, can affect dispatch status */
2408  _dbus_connection_flush_unlocked (connection);
2409 
2410  client_serial = _dbus_pending_call_get_reply_serial_unlocked (pending);
2411 
2412  /* note that timeout_milliseconds is limited to a smallish value
2413  * in _dbus_pending_call_new() so overflows aren't possible
2414  * below
2415  */
2416  timeout = _dbus_pending_call_get_timeout_unlocked (pending);
2417  _dbus_get_monotonic_time (&start_tv_sec, &start_tv_usec);
2418  if (timeout)
2419  {
2420  timeout_milliseconds = dbus_timeout_get_interval (timeout);
2421 
2422  _dbus_verbose ("dbus_connection_send_with_reply_and_block(): will block %d milliseconds for reply serial %u from %ld sec %ld usec\n",
2423  timeout_milliseconds,
2424  client_serial,
2425  start_tv_sec, start_tv_usec);
2426  }
2427  else
2428  {
2429  timeout_milliseconds = -1;
2430 
2431  _dbus_verbose ("dbus_connection_send_with_reply_and_block(): will block for reply serial %u\n", client_serial);
2432  }
2433 
2434  /* check to see if we already got the data off the socket */
2435  /* from another blocked pending call */
2436  if (check_for_reply_and_update_dispatch_unlocked (connection, pending))
2437  return;
2438 
2439  /* Now we wait... */
2440  /* always block at least once as we know we don't have the reply yet */
2442  pending,
2443  DBUS_ITERATION_DO_READING |
2444  DBUS_ITERATION_BLOCK,
2445  timeout_milliseconds);
2446 
2447  recheck_status:
2448 
2449  _dbus_verbose ("top of recheck\n");
2450 
2451  HAVE_LOCK_CHECK (connection);
2452 
2453  /* queue messages and get status */
2454 
2455  status = _dbus_connection_get_dispatch_status_unlocked (connection);
2456 
2457  /* the get_completed() is in case a dispatch() while we were blocking
2458  * got the reply instead of us.
2459  */
2461  {
2462  _dbus_verbose ("Pending call completed by dispatch\n");
2463  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2464  dbus_pending_call_unref (pending);
2465  return;
2466  }
2467 
2468  if (status == DBUS_DISPATCH_DATA_REMAINS)
2469  {
2470  if (check_for_reply_and_update_dispatch_unlocked (connection, pending))
2471  return;
2472  }
2473 
2474  _dbus_get_monotonic_time (&tv_sec, &tv_usec);
2475  elapsed_milliseconds = (tv_sec - start_tv_sec) * 1000 +
2476  (tv_usec - start_tv_usec) / 1000;
2477 
2478  if (!_dbus_connection_get_is_connected_unlocked (connection))
2479  {
2480  DBusMessage *error_msg;
2481 
2482  error_msg = generate_local_error_message (client_serial,
2484  "Connection was disconnected before a reply was received");
2485 
2486  /* on OOM error_msg is set to NULL */
2487  complete_pending_call_and_unlock (connection, pending, error_msg);
2488  if (error_msg != NULL)
2489  dbus_message_unref (error_msg);
2490  dbus_pending_call_unref (pending);
2491  return;
2492  }
2493  else if (connection->disconnect_message_link == NULL)
2494  _dbus_verbose ("dbus_connection_send_with_reply_and_block(): disconnected\n");
2495  else if (timeout == NULL)
2496  {
2497  if (status == DBUS_DISPATCH_NEED_MEMORY)
2498  {
2499  /* Try sleeping a bit, as we aren't sure we need to block for reading,
2500  * we may already have a reply in the buffer and just can't process
2501  * it.
2502  */
2503  _dbus_verbose ("dbus_connection_send_with_reply_and_block() waiting for more memory\n");
2504 
2505  _dbus_memory_pause_based_on_timeout (timeout_milliseconds - elapsed_milliseconds);
2506  }
2507  else
2508  {
2509  /* block again, we don't have the reply buffered yet. */
2511  pending,
2512  DBUS_ITERATION_DO_READING |
2513  DBUS_ITERATION_BLOCK,
2514  timeout_milliseconds - elapsed_milliseconds);
2515  }
2516 
2517  goto recheck_status;
2518  }
2519  else if (tv_sec < start_tv_sec)
2520  _dbus_verbose ("dbus_connection_send_with_reply_and_block(): clock set backward\n");
2521  else if (elapsed_milliseconds < timeout_milliseconds)
2522  {
2523  _dbus_verbose ("dbus_connection_send_with_reply_and_block(): %d milliseconds remain\n", timeout_milliseconds - elapsed_milliseconds);
2524 
2525  if (status == DBUS_DISPATCH_NEED_MEMORY)
2526  {
2527  /* Try sleeping a bit, as we aren't sure we need to block for reading,
2528  * we may already have a reply in the buffer and just can't process
2529  * it.
2530  */
2531  _dbus_verbose ("dbus_connection_send_with_reply_and_block() waiting for more memory\n");
2532 
2533  _dbus_memory_pause_based_on_timeout (timeout_milliseconds - elapsed_milliseconds);
2534  }
2535  else
2536  {
2537  /* block again, we don't have the reply buffered yet. */
2539  NULL,
2540  DBUS_ITERATION_DO_READING |
2541  DBUS_ITERATION_BLOCK,
2542  timeout_milliseconds - elapsed_milliseconds);
2543  }
2544 
2545  goto recheck_status;
2546  }
2547 
2548  _dbus_verbose ("dbus_connection_send_with_reply_and_block(): Waited %d milliseconds and got no reply\n",
2549  elapsed_milliseconds);
2550 
2552 
2553  /* unlock and call user code */
2554  complete_pending_call_and_unlock (connection, pending, NULL);
2555 
2556  /* update user code on dispatch status */
2557  CONNECTION_LOCK (connection);
2558  status = _dbus_connection_get_dispatch_status_unlocked (connection);
2559  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2560  dbus_pending_call_unref (pending);
2561 }
2562 
2568 int
2570 {
2571  return _dbus_transport_get_pending_fds_count (connection->transport);
2572 }
2573 
2581 void
2583  DBusPendingFdsChangeFunction callback,
2584  void *data)
2585 {
2587  callback, data);
2588 }
2589 
2627 dbus_connection_open (const char *address,
2628  DBusError *error)
2629 {
2630  DBusConnection *connection;
2631 
2632  _dbus_return_val_if_fail (address != NULL, NULL);
2633  _dbus_return_val_if_error_is_set (error, NULL);
2634 
2635  connection = _dbus_connection_open_internal (address,
2636  TRUE,
2637  error);
2638 
2639  return connection;
2640 }
2641 
2670 dbus_connection_open_private (const char *address,
2671  DBusError *error)
2672 {
2673  DBusConnection *connection;
2674 
2675  _dbus_return_val_if_fail (address != NULL, NULL);
2676  _dbus_return_val_if_error_is_set (error, NULL);
2677 
2678  connection = _dbus_connection_open_internal (address,
2679  FALSE,
2680  error);
2681 
2682  return connection;
2683 }
2684 
2693 {
2694  dbus_int32_t old_refcount;
2695 
2696  _dbus_return_val_if_fail (connection != NULL, NULL);
2697  _dbus_return_val_if_fail (connection->generation == _dbus_current_generation, NULL);
2698  old_refcount = _dbus_atomic_inc (&connection->refcount);
2699  _dbus_connection_trace_ref (connection, old_refcount, old_refcount + 1,
2700  "ref");
2701 
2702  return connection;
2703 }
2704 
2705 static void
2706 free_outgoing_message (void *element,
2707  void *data)
2708 {
2709  DBusMessage *message = element;
2710  DBusConnection *connection = data;
2711 
2712  _dbus_message_remove_counter (message, connection->outgoing_counter);
2713  dbus_message_unref (message);
2714 }
2715 
2716 /* This is run without the mutex held, but after the last reference
2717  * to the connection has been dropped we should have no thread-related
2718  * problems
2719  */
2720 static void
2721 _dbus_connection_last_unref (DBusConnection *connection)
2722 {
2723  DBusList *link;
2724 
2725  _dbus_verbose ("Finalizing connection %p\n", connection);
2726 
2727  _dbus_assert (_dbus_atomic_get (&connection->refcount) == 0);
2728 
2729  /* You have to disconnect the connection before unref:ing it. Otherwise
2730  * you won't get the disconnected message.
2731  */
2733  _dbus_assert (connection->server_guid == NULL);
2734 
2735  /* ---- We're going to call various application callbacks here, hope it doesn't break anything... */
2737 
2742 
2743  _dbus_watch_list_free (connection->watches);
2744  connection->watches = NULL;
2745 
2746  _dbus_timeout_list_free (connection->timeouts);
2747  connection->timeouts = NULL;
2748 
2749  _dbus_data_slot_list_free (&connection->slot_list);
2750 
2751  link = _dbus_list_get_first_link (&connection->filter_list);
2752  while (link != NULL)
2753  {
2754  DBusMessageFilter *filter = link->data;
2755  DBusList *next = _dbus_list_get_next_link (&connection->filter_list, link);
2756 
2757  filter->function = NULL;
2758  _dbus_message_filter_unref (filter); /* calls app callback */
2759  link->data = NULL;
2760 
2761  link = next;
2762  }
2763  _dbus_list_clear (&connection->filter_list);
2764 
2765  /* ---- Done with stuff that invokes application callbacks */
2766 
2767  _dbus_object_tree_unref (connection->objects);
2768 
2770  connection->pending_replies = NULL;
2771 
2772  _dbus_list_clear (&connection->filter_list);
2773 
2774  _dbus_list_foreach (&connection->outgoing_messages,
2775  free_outgoing_message,
2776  connection);
2777  _dbus_list_clear (&connection->outgoing_messages);
2778 
2779  _dbus_list_foreach (&connection->incoming_messages,
2781  NULL);
2782  _dbus_list_clear (&connection->incoming_messages);
2783 
2784  _dbus_counter_unref (connection->outgoing_counter);
2785 
2786  _dbus_transport_unref (connection->transport);
2787 
2788  if (connection->disconnect_message_link)
2789  {
2790  DBusMessage *message = connection->disconnect_message_link->data;
2791  dbus_message_unref (message);
2793  }
2794 
2797 
2800 
2802 
2803  _dbus_rmutex_free_at_location (&connection->mutex);
2804 
2805  dbus_free (connection);
2806 }
2807 
2827 void
2829 {
2830  dbus_int32_t old_refcount;
2831 
2832  _dbus_return_if_fail (connection != NULL);
2833  _dbus_return_if_fail (connection->generation == _dbus_current_generation);
2834 
2835  old_refcount = _dbus_atomic_dec (&connection->refcount);
2836 
2837  _dbus_connection_trace_ref (connection, old_refcount, old_refcount - 1,
2838  "unref");
2839 
2840  if (old_refcount == 1)
2841  {
2842 #ifndef DBUS_DISABLE_CHECKS
2843  if (_dbus_transport_get_is_connected (connection->transport))
2844  {
2845  _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",
2846  connection->shareable ?
2847  "Most likely, the application called unref() too many times and removed a reference belonging to libdbus, since this is a shared connection.\n" :
2848  "Most likely, the application was supposed to call dbus_connection_close(), since this is a private connection.\n");
2849  return;
2850  }
2851 #endif
2852  _dbus_connection_last_unref (connection);
2853  }
2854 }
2855 
2856 /*
2857  * Note that the transport can disconnect itself (other end drops us)
2858  * and in that case this function never runs. So this function must
2859  * not do anything more than disconnect the transport and update the
2860  * dispatch status.
2861  *
2862  * If the transport self-disconnects, then we assume someone will
2863  * dispatch the connection to cause the dispatch status update.
2864  */
2865 static void
2866 _dbus_connection_close_possibly_shared_and_unlock (DBusConnection *connection)
2867 {
2868  DBusDispatchStatus status;
2869 
2870  HAVE_LOCK_CHECK (connection);
2871 
2872  _dbus_verbose ("Disconnecting %p\n", connection);
2873 
2874  /* We need to ref because update_dispatch_status_and_unlock will unref
2875  * the connection if it was shared and libdbus was the only remaining
2876  * refcount holder.
2877  */
2878  _dbus_connection_ref_unlocked (connection);
2879 
2880  _dbus_transport_disconnect (connection->transport);
2881 
2882  /* This has the side effect of queuing the disconnect message link
2883  * (unless we don't have enough memory, possibly, so don't assert it).
2884  * After the disconnect message link is queued, dbus_bus_get/dbus_connection_open
2885  * should never again return the newly-disconnected connection.
2886  *
2887  * However, we only unref the shared connection and exit_on_disconnect when
2888  * the disconnect message reaches the head of the message queue,
2889  * NOT when it's first queued.
2890  */
2891  status = _dbus_connection_get_dispatch_status_unlocked (connection);
2892 
2893  /* This calls out to user code */
2894  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
2895 
2896  /* Could also call out to user code */
2897  dbus_connection_unref (connection);
2898 }
2899 
2942 void
2944 {
2945  _dbus_return_if_fail (connection != NULL);
2946  _dbus_return_if_fail (connection->generation == _dbus_current_generation);
2947 
2948  CONNECTION_LOCK (connection);
2949 
2950 #ifndef DBUS_DISABLE_CHECKS
2951  if (connection->shareable)
2952  {
2953  CONNECTION_UNLOCK (connection);
2954 
2955  _dbus_warn_check_failed ("Applications must not close shared connections - see dbus_connection_close() docs. This is a bug in the application.\n");
2956  return;
2957  }
2958 #endif
2959 
2960  _dbus_connection_close_possibly_shared_and_unlock (connection);
2961 }
2962 
2963 static dbus_bool_t
2964 _dbus_connection_get_is_connected_unlocked (DBusConnection *connection)
2965 {
2966  HAVE_LOCK_CHECK (connection);
2967  return _dbus_transport_get_is_connected (connection->transport);
2968 }
2969 
2985 {
2986  dbus_bool_t res;
2987 
2988  _dbus_return_val_if_fail (connection != NULL, FALSE);
2989 
2990  CONNECTION_LOCK (connection);
2991  res = _dbus_connection_get_is_connected_unlocked (connection);
2992  CONNECTION_UNLOCK (connection);
2993 
2994  return res;
2995 }
2996 
3007 {
3008  dbus_bool_t res;
3009 
3010  _dbus_return_val_if_fail (connection != NULL, FALSE);
3011 
3012  CONNECTION_LOCK (connection);
3013  res = _dbus_transport_try_to_authenticate (connection->transport);
3014  CONNECTION_UNLOCK (connection);
3015 
3016  return res;
3017 }
3018 
3041 {
3042  dbus_bool_t res;
3043 
3044  _dbus_return_val_if_fail (connection != NULL, FALSE);
3045 
3046  CONNECTION_LOCK (connection);
3047  res = _dbus_transport_get_is_anonymous (connection->transport);
3048  CONNECTION_UNLOCK (connection);
3049 
3050  return res;
3051 }
3052 
3084 char*
3086 {
3087  char *id;
3088 
3089  _dbus_return_val_if_fail (connection != NULL, NULL);
3090 
3091  CONNECTION_LOCK (connection);
3093  CONNECTION_UNLOCK (connection);
3094 
3095  return id;
3096 }
3097 
3117  int type)
3118 {
3119  _dbus_return_val_if_fail (connection != NULL, FALSE);
3120 
3121  if (!dbus_type_is_valid (type))
3122  return FALSE;
3123 
3124  if (type != DBUS_TYPE_UNIX_FD)
3125  return TRUE;
3126 
3127 #ifdef HAVE_UNIX_FD_PASSING
3128  {
3129  dbus_bool_t b;
3130 
3131  CONNECTION_LOCK(connection);
3133  CONNECTION_UNLOCK(connection);
3134 
3135  return b;
3136  }
3137 #endif
3138 
3139  return FALSE;
3140 }
3141 
3155 void
3157  dbus_bool_t exit_on_disconnect)
3158 {
3159  _dbus_return_if_fail (connection != NULL);
3160 
3161  CONNECTION_LOCK (connection);
3162  connection->exit_on_disconnect = exit_on_disconnect != FALSE;
3163  CONNECTION_UNLOCK (connection);
3164 }
3165 
3177 {
3178  DBusPreallocatedSend *preallocated;
3179 
3180  _dbus_return_val_if_fail (connection != NULL, NULL);
3181 
3182  CONNECTION_LOCK (connection);
3183 
3184  preallocated =
3185  _dbus_connection_preallocate_send_unlocked (connection);
3186 
3187  CONNECTION_UNLOCK (connection);
3188 
3189  return preallocated;
3190 }
3191 
3201 void
3203  DBusPreallocatedSend *preallocated)
3204 {
3205  _dbus_return_if_fail (connection != NULL);
3206  _dbus_return_if_fail (preallocated != NULL);
3207  _dbus_return_if_fail (connection == preallocated->connection);
3208 
3209  _dbus_list_free_link (preallocated->queue_link);
3210  _dbus_counter_unref (preallocated->counter_link->data);
3211  _dbus_list_free_link (preallocated->counter_link);
3212  dbus_free (preallocated);
3213 }
3214 
3227 void
3229  DBusPreallocatedSend *preallocated,
3230  DBusMessage *message,
3231  dbus_uint32_t *client_serial)
3232 {
3233  _dbus_return_if_fail (connection != NULL);
3234  _dbus_return_if_fail (preallocated != NULL);
3235  _dbus_return_if_fail (message != NULL);
3236  _dbus_return_if_fail (preallocated->connection == connection);
3237  _dbus_return_if_fail (dbus_message_get_type (message) != DBUS_MESSAGE_TYPE_METHOD_CALL ||
3238  dbus_message_get_member (message) != NULL);
3239  _dbus_return_if_fail (dbus_message_get_type (message) != DBUS_MESSAGE_TYPE_SIGNAL ||
3240  (dbus_message_get_interface (message) != NULL &&
3241  dbus_message_get_member (message) != NULL));
3242 
3243  CONNECTION_LOCK (connection);
3244 
3245 #ifdef HAVE_UNIX_FD_PASSING
3246 
3247  if (!_dbus_transport_can_pass_unix_fd(connection->transport) &&
3248  message->n_unix_fds > 0)
3249  {
3250  /* Refuse to send fds on a connection that cannot handle
3251  them. Unfortunately we cannot return a proper error here, so
3252  the best we can is just return. */
3253  CONNECTION_UNLOCK (connection);
3254  return;
3255  }
3256 
3257 #endif
3258 
3259  _dbus_connection_send_preallocated_and_unlock (connection,
3260  preallocated,
3261  message, client_serial);
3262 }
3263 
3264 static dbus_bool_t
3265 _dbus_connection_send_unlocked_no_update (DBusConnection *connection,
3266  DBusMessage *message,
3267  dbus_uint32_t *client_serial)
3268 {
3269  DBusPreallocatedSend *preallocated;
3270 
3271  _dbus_assert (connection != NULL);
3272  _dbus_assert (message != NULL);
3273 
3274  preallocated = _dbus_connection_preallocate_send_unlocked (connection);
3275  if (preallocated == NULL)
3276  return FALSE;
3277 
3278  _dbus_connection_send_preallocated_unlocked_no_update (connection,
3279  preallocated,
3280  message,
3281  client_serial);
3282  return TRUE;
3283 }
3284 
3314  DBusMessage *message,
3315  dbus_uint32_t *serial)
3316 {
3317  _dbus_return_val_if_fail (connection != NULL, FALSE);
3318  _dbus_return_val_if_fail (message != NULL, FALSE);
3319 
3320  CONNECTION_LOCK (connection);
3321 
3322 #ifdef HAVE_UNIX_FD_PASSING
3323 
3324  if (!_dbus_transport_can_pass_unix_fd(connection->transport) &&
3325  message->n_unix_fds > 0)
3326  {
3327  /* Refuse to send fds on a connection that cannot handle
3328  them. Unfortunately we cannot return a proper error here, so
3329  the best we can is just return. */
3330  CONNECTION_UNLOCK (connection);
3331  return FALSE;
3332  }
3333 
3334 #endif
3335 
3336  return _dbus_connection_send_and_unlock (connection,
3337  message,
3338  serial);
3339 }
3340 
3341 static dbus_bool_t
3342 reply_handler_timeout (void *data)
3343 {
3344  DBusConnection *connection;
3345  DBusDispatchStatus status;
3346  DBusPendingCall *pending = data;
3347 
3348  connection = _dbus_pending_call_get_connection_and_lock (pending);
3349  _dbus_connection_ref_unlocked (connection);
3350 
3352  connection);
3356 
3357  _dbus_verbose ("middle\n");
3358  status = _dbus_connection_get_dispatch_status_unlocked (connection);
3359 
3360  /* Unlocks, and calls out to user code */
3361  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3362  dbus_connection_unref (connection);
3363 
3364  return TRUE;
3365 }
3366 
3411  DBusMessage *message,
3412  DBusPendingCall **pending_return,
3413  int timeout_milliseconds)
3414 {
3415  DBusPendingCall *pending;
3416  dbus_int32_t serial = -1;
3417  DBusDispatchStatus status;
3418 
3419  _dbus_return_val_if_fail (connection != NULL, FALSE);
3420  _dbus_return_val_if_fail (message != NULL, FALSE);
3421  _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, FALSE);
3422 
3423  if (pending_return)
3424  *pending_return = NULL;
3425 
3426  CONNECTION_LOCK (connection);
3427 
3428 #ifdef HAVE_UNIX_FD_PASSING
3429 
3430  if (!_dbus_transport_can_pass_unix_fd(connection->transport) &&
3431  message->n_unix_fds > 0)
3432  {
3433  /* Refuse to send fds on a connection that cannot handle
3434  them. Unfortunately we cannot return a proper error here, so
3435  the best we can do is return TRUE but leave *pending_return
3436  as NULL. */
3437  CONNECTION_UNLOCK (connection);
3438  return TRUE;
3439  }
3440 
3441 #endif
3442 
3443  if (!_dbus_connection_get_is_connected_unlocked (connection))
3444  {
3445  CONNECTION_UNLOCK (connection);
3446 
3447  return TRUE;
3448  }
3449 
3450  pending = _dbus_pending_call_new_unlocked (connection,
3451  timeout_milliseconds,
3452  reply_handler_timeout);
3453 
3454  if (pending == NULL)
3455  {
3456  CONNECTION_UNLOCK (connection);
3457  return FALSE;
3458  }
3459 
3460  /* Assign a serial to the message */
3461  serial = dbus_message_get_serial (message);
3462  if (serial == 0)
3463  {
3464  serial = _dbus_connection_get_next_client_serial (connection);
3465  dbus_message_set_serial (message, serial);
3466  }
3467 
3468  if (!_dbus_pending_call_set_timeout_error_unlocked (pending, message, serial))
3469  goto error;
3470 
3471  /* Insert the serial in the pending replies hash;
3472  * hash takes a refcount on DBusPendingCall.
3473  * Also, add the timeout.
3474  */
3475  if (!_dbus_connection_attach_pending_call_unlocked (connection,
3476  pending))
3477  goto error;
3478 
3479  if (!_dbus_connection_send_unlocked_no_update (connection, message, NULL))
3480  {
3481  _dbus_connection_detach_pending_call_and_unlock (connection,
3482  pending);
3483  goto error_unlocked;
3484  }
3485 
3486  if (pending_return)
3487  *pending_return = pending; /* hand off refcount */
3488  else
3489  {
3490  _dbus_connection_detach_pending_call_unlocked (connection, pending);
3491  /* we still have a ref to the pending call in this case, we unref
3492  * after unlocking, below
3493  */
3494  }
3495 
3496  status = _dbus_connection_get_dispatch_status_unlocked (connection);
3497 
3498  /* this calls out to user code */
3499  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3500 
3501  if (pending_return == NULL)
3502  dbus_pending_call_unref (pending);
3503 
3504  return TRUE;
3505 
3506  error:
3507  CONNECTION_UNLOCK (connection);
3508  error_unlocked:
3509  dbus_pending_call_unref (pending);
3510  return FALSE;
3511 }
3512 
3545 DBusMessage*
3547  DBusMessage *message,
3548  int timeout_milliseconds,
3549  DBusError *error)
3550 {
3551  DBusMessage *reply;
3552  DBusPendingCall *pending;
3553 
3554  _dbus_return_val_if_fail (connection != NULL, NULL);
3555  _dbus_return_val_if_fail (message != NULL, NULL);
3556  _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, NULL);
3557  _dbus_return_val_if_error_is_set (error, NULL);
3558 
3559 #ifdef HAVE_UNIX_FD_PASSING
3560 
3561  CONNECTION_LOCK (connection);
3562  if (!_dbus_transport_can_pass_unix_fd(connection->transport) &&
3563  message->n_unix_fds > 0)
3564  {
3565  CONNECTION_UNLOCK (connection);
3566  dbus_set_error(error, DBUS_ERROR_FAILED, "Cannot send file descriptors on this connection.");
3567  return NULL;
3568  }
3569  CONNECTION_UNLOCK (connection);
3570 
3571 #endif
3572 
3573  if (!dbus_connection_send_with_reply (connection, message,
3574  &pending, timeout_milliseconds))
3575  {
3576  _DBUS_SET_OOM (error);
3577  return NULL;
3578  }
3579 
3580  if (pending == NULL)
3581  {
3582  dbus_set_error (error, DBUS_ERROR_DISCONNECTED, "Connection is closed");
3583  return NULL;
3584  }
3585 
3586  dbus_pending_call_block (pending);
3587 
3588  reply = dbus_pending_call_steal_reply (pending);
3589  dbus_pending_call_unref (pending);
3590 
3591  /* call_complete_and_unlock() called from pending_call_block() should
3592  * always fill this in.
3593  */
3594  _dbus_assert (reply != NULL);
3595 
3596  if (dbus_set_error_from_message (error, reply))
3597  {
3598  dbus_message_unref (reply);
3599  return NULL;
3600  }
3601  else
3602  return reply;
3603 }
3604 
3613 static DBusDispatchStatus
3614 _dbus_connection_flush_unlocked (DBusConnection *connection)
3615 {
3616  /* We have to specify DBUS_ITERATION_DO_READING here because
3617  * otherwise we could have two apps deadlock if they are both doing
3618  * a flush(), and the kernel buffers fill up. This could change the
3619  * dispatch status.
3620  */
3621  DBusDispatchStatus status;
3622 
3623  HAVE_LOCK_CHECK (connection);
3624 
3625  while (connection->n_outgoing > 0 &&
3626  _dbus_connection_get_is_connected_unlocked (connection))
3627  {
3628  _dbus_verbose ("doing iteration in\n");
3629  HAVE_LOCK_CHECK (connection);
3631  NULL,
3632  DBUS_ITERATION_DO_READING |
3633  DBUS_ITERATION_DO_WRITING |
3634  DBUS_ITERATION_BLOCK,
3635  -1);
3636  }
3637 
3638  HAVE_LOCK_CHECK (connection);
3639  _dbus_verbose ("middle\n");
3640  status = _dbus_connection_get_dispatch_status_unlocked (connection);
3641 
3642  HAVE_LOCK_CHECK (connection);
3643  return status;
3644 }
3645 
3651 void
3653 {
3654  /* We have to specify DBUS_ITERATION_DO_READING here because
3655  * otherwise we could have two apps deadlock if they are both doing
3656  * a flush(), and the kernel buffers fill up. This could change the
3657  * dispatch status.
3658  */
3659  DBusDispatchStatus status;
3660 
3661  _dbus_return_if_fail (connection != NULL);
3662 
3663  CONNECTION_LOCK (connection);
3664 
3665  status = _dbus_connection_flush_unlocked (connection);
3666 
3667  HAVE_LOCK_CHECK (connection);
3668  /* Unlocks and calls out to user code */
3669  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3670 
3671  _dbus_verbose ("end\n");
3672 }
3673 
3684 static dbus_bool_t
3685 _dbus_connection_read_write_dispatch (DBusConnection *connection,
3686  int timeout_milliseconds,
3687  dbus_bool_t dispatch)
3688 {
3689  DBusDispatchStatus dstatus;
3690  dbus_bool_t progress_possible;
3691 
3692  /* Need to grab a ref here in case we're a private connection and
3693  * the user drops the last ref in a handler we call; see bug
3694  * https://bugs.freedesktop.org/show_bug.cgi?id=15635
3695  */
3696  dbus_connection_ref (connection);
3697  dstatus = dbus_connection_get_dispatch_status (connection);
3698 
3699  if (dispatch && dstatus == DBUS_DISPATCH_DATA_REMAINS)
3700  {
3701  _dbus_verbose ("doing dispatch\n");
3702  dbus_connection_dispatch (connection);
3703  CONNECTION_LOCK (connection);
3704  }
3705  else if (dstatus == DBUS_DISPATCH_NEED_MEMORY)
3706  {
3707  _dbus_verbose ("pausing for memory\n");
3708  _dbus_memory_pause_based_on_timeout (timeout_milliseconds);
3709  CONNECTION_LOCK (connection);
3710  }
3711  else
3712  {
3713  CONNECTION_LOCK (connection);
3714  if (_dbus_connection_get_is_connected_unlocked (connection))
3715  {
3716  _dbus_verbose ("doing iteration\n");
3718  NULL,
3719  DBUS_ITERATION_DO_READING |
3720  DBUS_ITERATION_DO_WRITING |
3721  DBUS_ITERATION_BLOCK,
3722  timeout_milliseconds);
3723  }
3724  }
3725 
3726  HAVE_LOCK_CHECK (connection);
3727  /* If we can dispatch, we can make progress until the Disconnected message
3728  * has been processed; if we can only read/write, we can make progress
3729  * as long as the transport is open.
3730  */
3731  if (dispatch)
3732  progress_possible = connection->n_incoming != 0 ||
3733  connection->disconnect_message_link != NULL;
3734  else
3735  progress_possible = _dbus_connection_get_is_connected_unlocked (connection);
3736 
3737  CONNECTION_UNLOCK (connection);
3738 
3739  dbus_connection_unref (connection);
3740 
3741  return progress_possible; /* TRUE if we can make more progress */
3742 }
3743 
3744 
3781  int timeout_milliseconds)
3782 {
3783  _dbus_return_val_if_fail (connection != NULL, FALSE);
3784  _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, FALSE);
3785  return _dbus_connection_read_write_dispatch(connection, timeout_milliseconds, TRUE);
3786 }
3787 
3811 dbus_bool_t
3813  int timeout_milliseconds)
3814 {
3815  _dbus_return_val_if_fail (connection != NULL, FALSE);
3816  _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, FALSE);
3817  return _dbus_connection_read_write_dispatch(connection, timeout_milliseconds, FALSE);
3818 }
3819 
3820 /* We need to call this anytime we pop the head of the queue, and then
3821  * update_dispatch_status_and_unlock needs to be called afterward
3822  * which will "process" the disconnected message and set
3823  * disconnected_message_processed.
3824  */
3825 static void
3826 check_disconnected_message_arrived_unlocked (DBusConnection *connection,
3827  DBusMessage *head_of_queue)
3828 {
3829  HAVE_LOCK_CHECK (connection);
3830 
3831  /* checking that the link is NULL is an optimization to avoid the is_signal call */
3832  if (connection->disconnect_message_link == NULL &&
3833  dbus_message_is_signal (head_of_queue,
3835  "Disconnected"))
3836  {
3837  connection->disconnected_message_arrived = TRUE;
3838  }
3839 }
3840 
3860 DBusMessage*
3862 {
3863  DBusDispatchStatus status;
3864  DBusMessage *message;
3865 
3866  _dbus_return_val_if_fail (connection != NULL, NULL);
3867 
3868  _dbus_verbose ("start\n");
3869 
3870  /* this is called for the side effect that it queues
3871  * up any messages from the transport
3872  */
3873  status = dbus_connection_get_dispatch_status (connection);
3874  if (status != DBUS_DISPATCH_DATA_REMAINS)
3875  return NULL;
3876 
3877  CONNECTION_LOCK (connection);
3878 
3879  _dbus_connection_acquire_dispatch (connection);
3880 
3881  /* While a message is outstanding, the dispatch lock is held */
3882  _dbus_assert (connection->message_borrowed == NULL);
3883 
3884  connection->message_borrowed = _dbus_list_get_first (&connection->incoming_messages);
3885 
3886  message = connection->message_borrowed;
3887 
3888  check_disconnected_message_arrived_unlocked (connection, message);
3889 
3890  /* Note that we KEEP the dispatch lock until the message is returned */
3891  if (message == NULL)
3892  _dbus_connection_release_dispatch (connection);
3893 
3894  CONNECTION_UNLOCK (connection);
3895 
3896  _dbus_message_trace_ref (message, -1, -1, "dbus_connection_borrow_message");
3897 
3898  /* We don't update dispatch status until it's returned or stolen */
3899 
3900  return message;
3901 }
3902 
3911 void
3913  DBusMessage *message)
3914 {
3915  DBusDispatchStatus status;
3916 
3917  _dbus_return_if_fail (connection != NULL);
3918  _dbus_return_if_fail (message != NULL);
3919  _dbus_return_if_fail (message == connection->message_borrowed);
3920  _dbus_return_if_fail (connection->dispatch_acquired);
3921 
3922  CONNECTION_LOCK (connection);
3923 
3924  _dbus_assert (message == connection->message_borrowed);
3925 
3926  connection->message_borrowed = NULL;
3927 
3928  _dbus_connection_release_dispatch (connection);
3929 
3930  status = _dbus_connection_get_dispatch_status_unlocked (connection);
3931  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3932 
3933  _dbus_message_trace_ref (message, -1, -1, "dbus_connection_return_message");
3934 }
3935 
3945 void
3947  DBusMessage *message)
3948 {
3949  DBusMessage *pop_message;
3950  DBusDispatchStatus status;
3951 
3952  _dbus_return_if_fail (connection != NULL);
3953  _dbus_return_if_fail (message != NULL);
3954  _dbus_return_if_fail (message == connection->message_borrowed);
3955  _dbus_return_if_fail (connection->dispatch_acquired);
3956 
3957  CONNECTION_LOCK (connection);
3958 
3959  _dbus_assert (message == connection->message_borrowed);
3960 
3961  pop_message = _dbus_list_pop_first (&connection->incoming_messages);
3962  _dbus_assert (message == pop_message);
3963  (void) pop_message; /* unused unless asserting */
3964 
3965  connection->n_incoming -= 1;
3966 
3967  _dbus_verbose ("Incoming message %p stolen from queue, %d incoming\n",
3968  message, connection->n_incoming);
3969 
3970  connection->message_borrowed = NULL;
3971 
3972  _dbus_connection_release_dispatch (connection);
3973 
3974  status = _dbus_connection_get_dispatch_status_unlocked (connection);
3975  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
3976  _dbus_message_trace_ref (message, -1, -1,
3977  "dbus_connection_steal_borrowed_message");
3978 }
3979 
3980 /* See dbus_connection_pop_message, but requires the caller to own
3981  * the lock before calling. May drop the lock while running.
3982  */
3983 static DBusList*
3984 _dbus_connection_pop_message_link_unlocked (DBusConnection *connection)
3985 {
3986  HAVE_LOCK_CHECK (connection);
3987 
3988  _dbus_assert (connection->message_borrowed == NULL);
3989 
3990  if (connection->n_incoming > 0)
3991  {
3992  DBusList *link;
3993 
3994  link = _dbus_list_pop_first_link (&connection->incoming_messages);
3995  connection->n_incoming -= 1;
3996 
3997  _dbus_verbose ("Message %p (%s %s %s %s sig:'%s' serial:%u) removed from incoming queue %p, %d incoming\n",
3998  link->data,
4000  dbus_message_get_path (link->data) ?
4001  dbus_message_get_path (link->data) :
4002  "no path",
4005  "no interface",
4006  dbus_message_get_member (link->data) ?
4007  dbus_message_get_member (link->data) :
4008  "no member",
4010  dbus_message_get_serial (link->data),
4011  connection, connection->n_incoming);
4012 
4013  _dbus_message_trace_ref (link->data, -1, -1,
4014  "_dbus_connection_pop_message_link_unlocked");
4015 
4016  check_disconnected_message_arrived_unlocked (connection, link->data);
4017 
4018  return link;
4019  }
4020  else
4021  return NULL;
4022 }
4023 
4024 /* See dbus_connection_pop_message, but requires the caller to own
4025  * the lock before calling. May drop the lock while running.
4026  */
4027 static DBusMessage*
4028 _dbus_connection_pop_message_unlocked (DBusConnection *connection)
4029 {
4030  DBusList *link;
4031 
4032  HAVE_LOCK_CHECK (connection);
4033 
4034  link = _dbus_connection_pop_message_link_unlocked (connection);
4035 
4036  if (link != NULL)
4037  {
4038  DBusMessage *message;
4039 
4040  message = link->data;
4041 
4042  _dbus_list_free_link (link);
4043 
4044  return message;
4045  }
4046  else
4047  return NULL;
4048 }
4049 
4050 static void
4051 _dbus_connection_putback_message_link_unlocked (DBusConnection *connection,
4052  DBusList *message_link)
4053 {
4054  HAVE_LOCK_CHECK (connection);
4055 
4056  _dbus_assert (message_link != NULL);
4057  /* You can't borrow a message while a link is outstanding */
4058  _dbus_assert (connection->message_borrowed == NULL);
4059  /* We had to have the dispatch lock across the pop/putback */
4060  _dbus_assert (connection->dispatch_acquired);
4061 
4063  message_link);
4064  connection->n_incoming += 1;
4065 
4066  _dbus_verbose ("Message %p (%s %s %s '%s') put back into queue %p, %d incoming\n",
4067  message_link->data,
4069  dbus_message_get_interface (message_link->data) ?
4070  dbus_message_get_interface (message_link->data) :
4071  "no interface",
4072  dbus_message_get_member (message_link->data) ?
4073  dbus_message_get_member (message_link->data) :
4074  "no member",
4075  dbus_message_get_signature (message_link->data),
4076  connection, connection->n_incoming);
4077 
4078  _dbus_message_trace_ref (message_link->data, -1, -1,
4079  "_dbus_connection_putback_message_link_unlocked");
4080 }
4081 
4101 DBusMessage*
4103 {
4104  DBusMessage *message;
4105  DBusDispatchStatus status;
4106 
4107  _dbus_verbose ("start\n");
4108 
4109  /* this is called for the side effect that it queues
4110  * up any messages from the transport
4111  */
4112  status = dbus_connection_get_dispatch_status (connection);
4113  if (status != DBUS_DISPATCH_DATA_REMAINS)
4114  return NULL;
4115 
4116  CONNECTION_LOCK (connection);
4117  _dbus_connection_acquire_dispatch (connection);
4118  HAVE_LOCK_CHECK (connection);
4119 
4120  message = _dbus_connection_pop_message_unlocked (connection);
4121 
4122  _dbus_verbose ("Returning popped message %p\n", message);
4123 
4124  _dbus_connection_release_dispatch (connection);
4125 
4126  status = _dbus_connection_get_dispatch_status_unlocked (connection);
4127  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
4128 
4129  return message;
4130 }
4131 
4139 static void
4140 _dbus_connection_acquire_dispatch (DBusConnection *connection)
4141 {
4142  HAVE_LOCK_CHECK (connection);
4143 
4144  _dbus_connection_ref_unlocked (connection);
4145  CONNECTION_UNLOCK (connection);
4146 
4147  _dbus_verbose ("locking dispatch_mutex\n");
4148  _dbus_cmutex_lock (connection->dispatch_mutex);
4149 
4150  while (connection->dispatch_acquired)
4151  {
4152  _dbus_verbose ("waiting for dispatch to be acquirable\n");
4153  _dbus_condvar_wait (connection->dispatch_cond,
4154  connection->dispatch_mutex);
4155  }
4156 
4157  _dbus_assert (!connection->dispatch_acquired);
4158 
4159  connection->dispatch_acquired = TRUE;
4160 
4161  _dbus_verbose ("unlocking dispatch_mutex\n");
4162  _dbus_cmutex_unlock (connection->dispatch_mutex);
4163 
4164  CONNECTION_LOCK (connection);
4165  _dbus_connection_unref_unlocked (connection);
4166 }
4167 
4175 static void
4176 _dbus_connection_release_dispatch (DBusConnection *connection)
4177 {
4178  HAVE_LOCK_CHECK (connection);
4179 
4180  _dbus_verbose ("locking dispatch_mutex\n");
4181  _dbus_cmutex_lock (connection->dispatch_mutex);
4182 
4183  _dbus_assert (connection->dispatch_acquired);
4184 
4185  connection->dispatch_acquired = FALSE;
4186  _dbus_condvar_wake_one (connection->dispatch_cond);
4187 
4188  _dbus_verbose ("unlocking dispatch_mutex\n");
4189  _dbus_cmutex_unlock (connection->dispatch_mutex);
4190 }
4191 
4192 static void
4193 _dbus_connection_failed_pop (DBusConnection *connection,
4194  DBusList *message_link)
4195 {
4197  message_link);
4198  connection->n_incoming += 1;
4199 }
4200 
4201 /* Note this may be called multiple times since we don't track whether we already did it */
4202 static void
4203 notify_disconnected_unlocked (DBusConnection *connection)
4204 {
4205  HAVE_LOCK_CHECK (connection);
4206 
4207  /* Set the weakref in dbus-bus.c to NULL, so nobody will get a disconnected
4208  * connection from dbus_bus_get(). We make the same guarantee for
4209  * dbus_connection_open() but in a different way since we don't want to
4210  * unref right here; we instead check for connectedness before returning
4211  * the connection from the hash.
4212  */
4214 
4215  /* Dump the outgoing queue, we aren't going to be able to
4216  * send it now, and we'd like accessors like
4217  * dbus_connection_get_outgoing_size() to be accurate.
4218  */
4219  if (connection->n_outgoing > 0)
4220  {
4221  DBusList *link;
4222 
4223  _dbus_verbose ("Dropping %d outgoing messages since we're disconnected\n",
4224  connection->n_outgoing);
4225 
4226  while ((link = _dbus_list_get_last_link (&connection->outgoing_messages)))
4227  {
4228  _dbus_connection_message_sent_unlocked (connection, link->data);
4229  }
4230  }
4231 }
4232 
4233 /* Note this may be called multiple times since we don't track whether we already did it */
4234 static DBusDispatchStatus
4235 notify_disconnected_and_dispatch_complete_unlocked (DBusConnection *connection)
4236 {
4237  HAVE_LOCK_CHECK (connection);
4238 
4239  if (connection->disconnect_message_link != NULL)
4240  {
4241  _dbus_verbose ("Sending disconnect message\n");
4242 
4243  /* If we have pending calls, queue their timeouts - we want the Disconnected
4244  * to be the last message, after these timeouts.
4245  */
4246  connection_timeout_and_complete_all_pending_calls_unlocked (connection);
4247 
4248  /* We haven't sent the disconnect message already,
4249  * and all real messages have been queued up.
4250  */
4252  connection->disconnect_message_link);
4253  connection->disconnect_message_link = NULL;
4254 
4256  }
4257 
4258  return DBUS_DISPATCH_COMPLETE;
4259 }
4260 
4261 static DBusDispatchStatus
4262 _dbus_connection_get_dispatch_status_unlocked (DBusConnection *connection)
4263 {
4264  HAVE_LOCK_CHECK (connection);
4265 
4266  if (connection->n_incoming > 0)
4268  else if (!_dbus_transport_queue_messages (connection->transport))
4270  else
4271  {
4272  DBusDispatchStatus status;
4273  dbus_bool_t is_connected;
4274 
4275  status = _dbus_transport_get_dispatch_status (connection->transport);
4276  is_connected = _dbus_transport_get_is_connected (connection->transport);
4277 
4278  _dbus_verbose ("dispatch status = %s is_connected = %d\n",
4279  DISPATCH_STATUS_NAME (status), is_connected);
4280 
4281  if (!is_connected)
4282  {
4283  /* It's possible this would be better done by having an explicit
4284  * notification from _dbus_transport_disconnect() that would
4285  * synchronously do this, instead of waiting for the next dispatch
4286  * status check. However, probably not good to change until it causes
4287  * a problem.
4288  */
4289  notify_disconnected_unlocked (connection);
4290 
4291  /* I'm not sure this is needed; the idea is that we want to
4292  * queue the Disconnected only after we've read all the
4293  * messages, but if we're disconnected maybe we are guaranteed
4294  * to have read them all ?
4295  */
4296  if (status == DBUS_DISPATCH_COMPLETE)
4297  status = notify_disconnected_and_dispatch_complete_unlocked (connection);
4298  }
4299 
4300  if (status != DBUS_DISPATCH_COMPLETE)
4301  return status;
4302  else if (connection->n_incoming > 0)
4304  else
4305  return DBUS_DISPATCH_COMPLETE;
4306  }
4307 }
4308 
4309 static void
4310 _dbus_connection_update_dispatch_status_and_unlock (DBusConnection *connection,
4311  DBusDispatchStatus new_status)
4312 {
4313  dbus_bool_t changed;
4314  DBusDispatchStatusFunction function;
4315  void *data;
4316 
4317  HAVE_LOCK_CHECK (connection);
4318 
4319  _dbus_connection_ref_unlocked (connection);
4320 
4321  changed = new_status != connection->last_dispatch_status;
4322 
4323  connection->last_dispatch_status = new_status;
4324 
4325  function = connection->dispatch_status_function;
4326  data = connection->dispatch_status_data;
4327 
4328  if (connection->disconnected_message_arrived &&
4329  !connection->disconnected_message_processed)
4330  {
4331  connection->disconnected_message_processed = TRUE;
4332 
4333  /* this does an unref, but we have a ref
4334  * so we should not run the finalizer here
4335  * inside the lock.
4336  */
4337  connection_forget_shared_unlocked (connection);
4338 
4339  if (connection->exit_on_disconnect)
4340  {
4341  CONNECTION_UNLOCK (connection);
4342 
4343  _dbus_verbose ("Exiting on Disconnected signal\n");
4344  _dbus_exit (1);
4345  _dbus_assert_not_reached ("Call to exit() returned");
4346  }
4347  }
4348 
4349  /* We drop the lock */
4350  CONNECTION_UNLOCK (connection);
4351 
4352  if (changed && function)
4353  {
4354  _dbus_verbose ("Notifying of change to dispatch status of %p now %d (%s)\n",
4355  connection, new_status,
4356  DISPATCH_STATUS_NAME (new_status));
4357  (* function) (connection, new_status, data);
4358  }
4359 
4360  dbus_connection_unref (connection);
4361 }
4362 
4390 {
4391  DBusDispatchStatus status;
4392 
4393  _dbus_return_val_if_fail (connection != NULL, DBUS_DISPATCH_COMPLETE);
4394 
4395  _dbus_verbose ("start\n");
4396 
4397  CONNECTION_LOCK (connection);
4398 
4399  status = _dbus_connection_get_dispatch_status_unlocked (connection);
4400 
4401  CONNECTION_UNLOCK (connection);
4402 
4403  return status;
4404 }
4405 
4409 static DBusHandlerResult
4410 _dbus_connection_peer_filter_unlocked_no_update (DBusConnection *connection,
4411  DBusMessage *message)
4412 {
4413  dbus_bool_t sent = FALSE;
4414  DBusMessage *ret = NULL;
4415  DBusList *expire_link;
4416 
4417  if (connection->route_peer_messages && dbus_message_get_destination (message) != NULL)
4418  {
4419  /* This means we're letting the bus route this message */
4421  }
4422 
4424  {
4426  }
4427 
4428  /* Preallocate a linked-list link, so that if we need to dispose of a
4429  * message, we can attach it to the expired list */
4430  expire_link = _dbus_list_alloc_link (NULL);
4431 
4432  if (!expire_link)
4434 
4435  if (dbus_message_is_method_call (message,
4437  "Ping"))
4438  {
4439  ret = dbus_message_new_method_return (message);
4440  if (ret == NULL)
4441  goto out;
4442 
4443  sent = _dbus_connection_send_unlocked_no_update (connection, ret, NULL);
4444  }
4445  else if (dbus_message_is_method_call (message,
4447  "GetMachineId"))
4448  {
4449  DBusString uuid;
4450  DBusError error = DBUS_ERROR_INIT;
4451 
4452  if (!_dbus_string_init (&uuid))
4453  goto out;
4454 
4455  if (_dbus_get_local_machine_uuid_encoded (&uuid, &error))
4456  {
4457  const char *v_STRING;
4458 
4459  ret = dbus_message_new_method_return (message);
4460 
4461  if (ret == NULL)
4462  {
4463  _dbus_string_free (&uuid);
4464  goto out;
4465  }
4466 
4467  v_STRING = _dbus_string_get_const_data (&uuid);
4468  if (dbus_message_append_args (ret,
4469  DBUS_TYPE_STRING, &v_STRING,
4471  {
4472  sent = _dbus_connection_send_unlocked_no_update (connection, ret, NULL);
4473  }
4474  }
4475  else if (dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY))
4476  {
4477  dbus_error_free (&error);
4478  goto out;
4479  }
4480  else
4481  {
4482  ret = dbus_message_new_error (message, error.name, error.message);
4483  dbus_error_free (&error);
4484 
4485  if (ret == NULL)
4486  goto out;
4487 
4488  sent = _dbus_connection_send_unlocked_no_update (connection, ret,
4489  NULL);
4490  }
4491 
4492  _dbus_string_free (&uuid);
4493  }
4494  else
4495  {
4496  /* We need to bounce anything else with this interface, otherwise apps
4497  * could start extending the interface and when we added extensions
4498  * here to DBusConnection we'd break those apps.
4499  */
4500  ret = dbus_message_new_error (message,
4502  "Unknown method invoked on org.freedesktop.DBus.Peer interface");
4503  if (ret == NULL)
4504  goto out;
4505 
4506  sent = _dbus_connection_send_unlocked_no_update (connection, ret, NULL);
4507  }
4508 
4509 out:
4510  if (ret == NULL)
4511  {
4512  _dbus_list_free_link (expire_link);
4513  }
4514  else
4515  {
4516  /* It'll be safe to unref the reply when we unlock */
4517  expire_link->data = ret;
4518  _dbus_list_prepend_link (&connection->expired_messages, expire_link);
4519  }
4520 
4521  if (!sent)
4523 
4525 }
4526 
4533 static DBusHandlerResult
4534 _dbus_connection_run_builtin_filters_unlocked_no_update (DBusConnection *connection,
4535  DBusMessage *message)
4536 {
4537  /* We just run one filter for now but have the option to run more
4538  if the spec calls for it in the future */
4539 
4540  return _dbus_connection_peer_filter_unlocked_no_update (connection, message);
4541 }
4542 
4587 {
4588  DBusMessage *message;
4589  DBusList *link, *filter_list_copy, *message_link;
4590  DBusHandlerResult result;
4591  DBusPendingCall *pending;
4592  dbus_int32_t reply_serial;
4593  DBusDispatchStatus status;
4594  dbus_bool_t found_object;
4595 
4596  _dbus_return_val_if_fail (connection != NULL, DBUS_DISPATCH_COMPLETE);
4597 
4598  _dbus_verbose ("\n");
4599 
4600  CONNECTION_LOCK (connection);
4601  status = _dbus_connection_get_dispatch_status_unlocked (connection);
4602  if (status != DBUS_DISPATCH_DATA_REMAINS)
4603  {
4604  /* unlocks and calls out to user code */
4605  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
4606  return status;
4607  }
4608 
4609  /* We need to ref the connection since the callback could potentially
4610  * drop the last ref to it
4611  */
4612  _dbus_connection_ref_unlocked (connection);
4613 
4614  _dbus_connection_acquire_dispatch (connection);
4615  HAVE_LOCK_CHECK (connection);
4616 
4617  message_link = _dbus_connection_pop_message_link_unlocked (connection);
4618  if (message_link == NULL)
4619  {
4620  /* another thread dispatched our stuff */
4621 
4622  _dbus_verbose ("another thread dispatched message (during acquire_dispatch above)\n");
4623 
4624  _dbus_connection_release_dispatch (connection);
4625 
4626  status = _dbus_connection_get_dispatch_status_unlocked (connection);
4627 
4628  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
4629 
4630  dbus_connection_unref (connection);
4631 
4632  return status;
4633  }
4634 
4635  message = message_link->data;
4636 
4637  _dbus_verbose (" dispatching message %p (%s %s %s '%s')\n",
4638  message,
4640  dbus_message_get_interface (message) ?
4641  dbus_message_get_interface (message) :
4642  "no interface",
4643  dbus_message_get_member (message) ?
4644  dbus_message_get_member (message) :
4645  "no member",
4646  dbus_message_get_signature (message));
4647 
4649 
4650  /* Pending call handling must be first, because if you do
4651  * dbus_connection_send_with_reply_and_block() or
4652  * dbus_pending_call_block() then no handlers/filters will be run on
4653  * the reply. We want consistent semantics in the case where we
4654  * dbus_connection_dispatch() the reply.
4655  */
4656 
4657  reply_serial = dbus_message_get_reply_serial (message);
4658  pending = _dbus_hash_table_lookup_int (connection->pending_replies,
4659  reply_serial);
4660  if (pending)
4661  {
4662  _dbus_verbose ("Dispatching a pending reply\n");
4663  complete_pending_call_and_unlock (connection, pending, message);
4664  pending = NULL; /* it's probably unref'd */
4665 
4666  CONNECTION_LOCK (connection);
4667  _dbus_verbose ("pending call completed in dispatch\n");
4668  result = DBUS_HANDLER_RESULT_HANDLED;
4669  goto out;
4670  }
4671 
4672  result = _dbus_connection_run_builtin_filters_unlocked_no_update (connection, message);
4674  goto out;
4675 
4676  if (!_dbus_list_copy (&connection->filter_list, &filter_list_copy))
4677  {
4678  _dbus_connection_release_dispatch (connection);
4679  HAVE_LOCK_CHECK (connection);
4680 
4681  _dbus_connection_failed_pop (connection, message_link);
4682 
4683  /* unlocks and calls user code */
4684  _dbus_connection_update_dispatch_status_and_unlock (connection,
4686  dbus_connection_unref (connection);
4687 
4689  }
4690 
4691  _dbus_list_foreach (&filter_list_copy,
4692  (DBusForeachFunction)_dbus_message_filter_ref,
4693  NULL);
4694 
4695  /* We're still protected from dispatch() reentrancy here
4696  * since we acquired the dispatcher
4697  */
4698  CONNECTION_UNLOCK (connection);
4699 
4700  link = _dbus_list_get_first_link (&filter_list_copy);
4701  while (link != NULL)
4702  {
4703  DBusMessageFilter *filter = link->data;
4704  DBusList *next = _dbus_list_get_next_link (&filter_list_copy, link);
4705 
4706  if (filter->function == NULL)
4707  {
4708  _dbus_verbose (" filter was removed in a callback function\n");
4709  link = next;
4710  continue;
4711  }
4712 
4713  _dbus_verbose (" running filter on message %p\n", message);
4714  result = (* filter->function) (connection, message, filter->user_data);
4715 
4717  break;
4718 
4719  link = next;
4720  }
4721 
4722  _dbus_list_foreach (&filter_list_copy,
4723  (DBusForeachFunction)_dbus_message_filter_unref,
4724  NULL);
4725  _dbus_list_clear (&filter_list_copy);
4726 
4727  CONNECTION_LOCK (connection);
4728 
4729  if (result == DBUS_HANDLER_RESULT_NEED_MEMORY)
4730  {
4731  _dbus_verbose ("No memory\n");
4732  goto out;
4733  }
4734  else if (result == DBUS_HANDLER_RESULT_HANDLED)
4735  {
4736  _dbus_verbose ("filter handled message in dispatch\n");
4737  goto out;
4738  }
4739 
4740  /* We're still protected from dispatch() reentrancy here
4741  * since we acquired the dispatcher
4742  */
4743  _dbus_verbose (" running object path dispatch on message %p (%s %s %s '%s')\n",
4744  message,
4746  dbus_message_get_interface (message) ?
4747  dbus_message_get_interface (message) :
4748  "no interface",
4749  dbus_message_get_member (message) ?
4750  dbus_message_get_member (message) :
4751  "no member",
4752  dbus_message_get_signature (message));
4753 
4754  HAVE_LOCK_CHECK (connection);
4755  result = _dbus_object_tree_dispatch_and_unlock (connection->objects,
4756  message,
4757  &found_object);
4758 
4759  CONNECTION_LOCK (connection);
4760 
4762  {
4763  _dbus_verbose ("object tree handled message in dispatch\n");
4764  goto out;
4765  }
4766 
4768  {
4769  DBusMessage *reply;
4770  DBusString str;
4771  DBusPreallocatedSend *preallocated;
4772  DBusList *expire_link;
4773 
4774  _dbus_verbose (" sending error %s\n",
4776 
4777  if (!_dbus_string_init (&str))
4778  {
4780  _dbus_verbose ("no memory for error string in dispatch\n");
4781  goto out;
4782  }
4783 
4784  if (!_dbus_string_append_printf (&str,
4785  "Method \"%s\" with signature \"%s\" on interface \"%s\" doesn't exist\n",
4786  dbus_message_get_member (message),
4787  dbus_message_get_signature (message),
4788  dbus_message_get_interface (message)))
4789  {
4790  _dbus_string_free (&str);
4792  _dbus_verbose ("no memory for error string in dispatch\n");
4793  goto out;
4794  }
4795 
4796  reply = dbus_message_new_error (message,
4798  _dbus_string_get_const_data (&str));
4799  _dbus_string_free (&str);
4800 
4801  if (reply == NULL)
4802  {
4804  _dbus_verbose ("no memory for error reply in dispatch\n");
4805  goto out;
4806  }
4807 
4808  expire_link = _dbus_list_alloc_link (reply);
4809 
4810  if (expire_link == NULL)
4811  {
4812  dbus_message_unref (reply);
4814  _dbus_verbose ("no memory for error send in dispatch\n");
4815  goto out;
4816  }
4817 
4818  preallocated = _dbus_connection_preallocate_send_unlocked (connection);
4819 
4820  if (preallocated == NULL)
4821  {
4822  _dbus_list_free_link (expire_link);
4823  /* It's OK that this is finalized, because it hasn't been seen by
4824  * anything that could attach user callbacks */
4825  dbus_message_unref (reply);
4827  _dbus_verbose ("no memory for error send in dispatch\n");
4828  goto out;
4829  }
4830 
4831  _dbus_connection_send_preallocated_unlocked_no_update (connection, preallocated,
4832  reply, NULL);
4833  /* reply will be freed when we release the lock */
4834  _dbus_list_prepend_link (&connection->expired_messages, expire_link);
4835 
4836  result = DBUS_HANDLER_RESULT_HANDLED;
4837  }
4838 
4839  _dbus_verbose (" done dispatching %p (%s %s %s '%s') on connection %p\n", message,
4841  dbus_message_get_interface (message) ?
4842  dbus_message_get_interface (message) :
4843  "no interface",
4844  dbus_message_get_member (message) ?
4845  dbus_message_get_member (message) :
4846  "no member",
4847  dbus_message_get_signature (message),
4848  connection);
4849 
4850  out:
4851  if (result == DBUS_HANDLER_RESULT_NEED_MEMORY)
4852  {
4853  _dbus_verbose ("out of memory\n");
4854 
4855  /* Put message back, and we'll start over.
4856  * Yes this means handlers must be idempotent if they
4857  * don't return HANDLED; c'est la vie.
4858  */
4859  _dbus_connection_putback_message_link_unlocked (connection,
4860  message_link);
4861  /* now we don't want to free them */
4862  message_link = NULL;
4863  message = NULL;
4864  }
4865  else
4866  {
4867  _dbus_verbose (" ... done dispatching\n");
4868  }
4869 
4870  _dbus_connection_release_dispatch (connection);
4871  HAVE_LOCK_CHECK (connection);
4872 
4873  if (message != NULL)
4874  {
4875  /* We don't want this message to count in maximum message limits when
4876  * computing the dispatch status, below. We have to drop the lock
4877  * temporarily, because finalizing a message can trigger callbacks.
4878  *
4879  * We have a reference to the connection, and we don't use any cached
4880  * pointers to the connection's internals below this point, so it should
4881  * be safe to drop the lock and take it back. */
4882  CONNECTION_UNLOCK (connection);
4883  dbus_message_unref (message);
4884  CONNECTION_LOCK (connection);
4885  }
4886 
4887  if (message_link != NULL)
4888  _dbus_list_free_link (message_link);
4889 
4890  _dbus_verbose ("before final status update\n");
4891  status = _dbus_connection_get_dispatch_status_unlocked (connection);
4892 
4893  /* unlocks and calls user code */
4894  _dbus_connection_update_dispatch_status_and_unlock (connection, status);
4895 
4896  dbus_connection_unref (connection);
4897 
4898  return status;
4899 }
4900 
4964  DBusAddWatchFunction add_function,
4965  DBusRemoveWatchFunction remove_function,
4966  DBusWatchToggledFunction toggled_function,
4967  void *data,
4968  DBusFreeFunction free_data_function)
4969 {
4970  dbus_bool_t retval;
4971 
4972  _dbus_return_val_if_fail (connection != NULL, FALSE);
4973 
4974  CONNECTION_LOCK (connection);
4975 
4976  retval = _dbus_watch_list_set_functions (connection->watches,
4977  add_function, remove_function,
4978  toggled_function,
4979  data, free_data_function);
4980 
4981  CONNECTION_UNLOCK (connection);
4982 
4983  return retval;
4984 }
4985 
5027  DBusAddTimeoutFunction add_function,
5028  DBusRemoveTimeoutFunction remove_function,
5029  DBusTimeoutToggledFunction toggled_function,
5030  void *data,
5031  DBusFreeFunction free_data_function)
5032 {
5033  dbus_bool_t retval;
5034 
5035  _dbus_return_val_if_fail (connection != NULL, FALSE);
5036 
5037  CONNECTION_LOCK (connection);
5038 
5039  retval = _dbus_timeout_list_set_functions (connection->timeouts,
5040  add_function, remove_function,
5041  toggled_function,
5042  data, free_data_function);
5043 
5044  CONNECTION_UNLOCK (connection);
5045 
5046  return retval;
5047 }
5048 
5063 void
5065  DBusWakeupMainFunction wakeup_main_function,
5066  void *data,
5067  DBusFreeFunction free_data_function)
5068 {
5069  void *old_data;
5070  DBusFreeFunction old_free_data;
5071 
5072  _dbus_return_if_fail (connection != NULL);
5073 
5074  CONNECTION_LOCK (connection);
5075  old_data = connection->wakeup_main_data;
5076  old_free_data = connection->free_wakeup_main_data;
5077 
5078  connection->wakeup_main_function = wakeup_main_function;
5079  connection->wakeup_main_data = data;
5080  connection->free_wakeup_main_data = free_data_function;
5081 
5082  CONNECTION_UNLOCK (connection);
5083 
5084  /* Callback outside the lock */
5085  if (old_free_data)
5086  (*old_free_data) (old_data);
5087 }
5088 
5109 void
5111  DBusDispatchStatusFunction function,
5112  void *data,
5113  DBusFreeFunction free_data_function)
5114 {
5115  void *old_data;
5116  DBusFreeFunction old_free_data;
5117 
5118  _dbus_return_if_fail (connection != NULL);
5119 
5120  CONNECTION_LOCK (connection);
5121  old_data = connection->dispatch_status_data;
5122  old_free_data = connection->free_dispatch_status_data;
5123 
5124  connection->dispatch_status_function = function;
5125  connection->dispatch_status_data = data;
5126  connection->free_dispatch_status_data = free_data_function;
5127 
5128  CONNECTION_UNLOCK (connection);
5129 
5130  /* Callback outside the lock */
5131  if (old_free_data)
5132  (*old_free_data) (old_data);
5133 }
5134 
5156  int *fd)
5157 {
5158  _dbus_return_val_if_fail (connection != NULL, FALSE);
5159  _dbus_return_val_if_fail (connection->transport != NULL, FALSE);
5160 
5161 #ifdef DBUS_WIN
5162  /* FIXME do this on a lower level */
5163  return FALSE;
5164 #endif
5165 
5166  return dbus_connection_get_socket(connection, fd);
5167 }
5168 
5186  int *fd)
5187 {
5188  dbus_bool_t retval;
5189  DBusSocket s = DBUS_SOCKET_INIT;
5190 
5191  _dbus_return_val_if_fail (connection != NULL, FALSE);
5192  _dbus_return_val_if_fail (connection->transport != NULL, FALSE);
5193 
5194  CONNECTION_LOCK (connection);
5195 
5196  retval = _dbus_transport_get_socket_fd (connection->transport, &s);
5197 
5198  if (retval)
5199  {
5200  *fd = _dbus_socket_get_int (s);
5201  }
5202 
5203  CONNECTION_UNLOCK (connection);
5204 
5205  return retval;
5206 }
5207 
5208 
5233  unsigned long *uid)
5234 {
5235  dbus_bool_t result;
5236 
5237  _dbus_return_val_if_fail (connection != NULL, FALSE);
5238  _dbus_return_val_if_fail (uid != NULL, FALSE);
5239 
5240  CONNECTION_LOCK (connection);
5241 
5243  result = FALSE;
5244  else
5245  result = _dbus_transport_get_unix_user (connection->transport,
5246  uid);
5247 
5248 #ifdef DBUS_WIN
5249  _dbus_assert (!result);
5250 #endif
5251 
5252  CONNECTION_UNLOCK (connection);
5253 
5254  return result;
5255 }
5256 
5269  unsigned long *pid)
5270 {
5271  dbus_bool_t result;
5272 
5273  _dbus_return_val_if_fail (connection != NULL, FALSE);
5274  _dbus_return_val_if_fail (pid != NULL, FALSE);
5275 
5276  CONNECTION_LOCK (connection);
5277 
5279  result = FALSE;
5280  else
5281  result = _dbus_transport_get_unix_process_id (connection->transport,
5282  pid);
5283 
5284  CONNECTION_UNLOCK (connection);
5285 
5286  return result;
5287 }
5288 
5302  void **data,
5303  dbus_int32_t *data_size)
5304 {
5305  dbus_bool_t result;
5306 
5307  _dbus_return_val_if_fail (connection != NULL, FALSE);
5308  _dbus_return_val_if_fail (data != NULL, FALSE);
5309  _dbus_return_val_if_fail (data_size != NULL, FALSE);
5310 
5311  CONNECTION_LOCK (connection);
5312 
5314  result = FALSE;
5315  else
5317  data,
5318  data_size);
5319  CONNECTION_UNLOCK (connection);
5320 
5321  return result;
5322 }
5323 
5346 void
5348  DBusAllowUnixUserFunction function,
5349  void *data,
5350  DBusFreeFunction free_data_function)
5351 {
5352  void *old_data = NULL;
5353  DBusFreeFunction old_free_function = NULL;
5354 
5355  _dbus_return_if_fail (connection != NULL);
5356 
5357  CONNECTION_LOCK (connection);
5359  function, data, free_data_function,
5360  &old_data, &old_free_function);
5361  CONNECTION_UNLOCK (connection);
5362 
5363  if (old_free_function != NULL)
5364  (* old_free_function) (old_data);
5365 }
5366 
5367 /* Same calling convention as dbus_connection_get_windows_user */
5369 _dbus_connection_get_linux_security_label (DBusConnection *connection,
5370  char **label_p)
5371 {
5372  dbus_bool_t result;
5373 
5374  _dbus_assert (connection != NULL);
5375  _dbus_assert (label_p != NULL);
5376 
5377  CONNECTION_LOCK (connection);
5378 
5380  result = FALSE;
5381  else
5382  result = _dbus_transport_get_linux_security_label (connection->transport,
5383  label_p);
5384 #ifndef __linux__
5385  _dbus_assert (!result);
5386 #endif
5387 
5388  CONNECTION_UNLOCK (connection);
5389 
5390  return result;
5391 }
5392 
5426  char **windows_sid_p)
5427 {
5428  dbus_bool_t result;
5429 
5430  _dbus_return_val_if_fail (connection != NULL, FALSE);
5431  _dbus_return_val_if_fail (windows_sid_p != NULL, FALSE);
5432 
5433  CONNECTION_LOCK (connection);
5434 
5436  result = FALSE;
5437  else
5438  result = _dbus_transport_get_windows_user (connection->transport,
5439  windows_sid_p);
5440 
5441 #ifdef DBUS_UNIX
5442  _dbus_assert (!result);
5443 #endif
5444 
5445  CONNECTION_UNLOCK (connection);
5446 
5447  return result;
5448 }
5449 
5471 void
5474  void *data,
5475  DBusFreeFunction free_data_function)
5476 {
5477  void *old_data = NULL;
5478  DBusFreeFunction old_free_function = NULL;
5479 
5480  _dbus_return_if_fail (connection != NULL);
5481 
5482  CONNECTION_LOCK (connection);
5484  function, data, free_data_function,
5485  &old_data, &old_free_function);
5486  CONNECTION_UNLOCK (connection);
5487 
5488  if (old_free_function != NULL)
5489  (* old_free_function) (old_data);
5490 }
5491 
5518 void
5520  dbus_bool_t value)
5521 {
5522  _dbus_return_if_fail (connection != NULL);
5523 
5524  CONNECTION_LOCK (connection);
5525  _dbus_transport_set_allow_anonymous (connection->transport, value);
5526  CONNECTION_UNLOCK (connection);
5527 }
5528 
5546 void
5548  dbus_bool_t value)
5549 {
5550  _dbus_return_if_fail (connection != NULL);
5551 
5552  CONNECTION_LOCK (connection);
5553  connection->route_peer_messages = value;
5554  CONNECTION_UNLOCK (connection);
5555 }
5556 
5580  DBusHandleMessageFunction function,
5581  void *user_data,
5582  DBusFreeFunction free_data_function)
5583 {
5584  DBusMessageFilter *filter;
5585 
5586  _dbus_return_val_if_fail (connection != NULL, FALSE);
5587  _dbus_return_val_if_fail (function != NULL, FALSE);
5588 
5589  filter = dbus_new0 (DBusMessageFilter, 1);
5590  if (filter == NULL)
5591  return FALSE;
5592 
5593  _dbus_atomic_inc (&filter->refcount);
5594 
5595  CONNECTION_LOCK (connection);
5596 
5597  if (!_dbus_list_append (&connection->filter_list,
5598  filter))
5599  {
5600  _dbus_message_filter_unref (filter);
5601  CONNECTION_UNLOCK (connection);
5602  return FALSE;
5603  }
5604 
5605  /* Fill in filter after all memory allocated,
5606  * so we don't run the free_user_data_function
5607  * if the add_filter() fails
5608  */
5609 
5610  filter->function = function;
5611  filter->user_data = user_data;
5612  filter->free_user_data_function = free_data_function;
5613 
5614  CONNECTION_UNLOCK (connection);
5615  return TRUE;
5616 }
5617 
5630 void
5632  DBusHandleMessageFunction function,
5633  void *user_data)
5634 {
5635  DBusList *link;
5636  DBusMessageFilter *filter;
5637 
5638  _dbus_return_if_fail (connection != NULL);
5639  _dbus_return_if_fail (function != NULL);
5640 
5641  CONNECTION_LOCK (connection);
5642 
5643  filter = NULL;
5644 
5645  link = _dbus_list_get_last_link (&connection->filter_list);
5646  while (link != NULL)
5647  {
5648  filter = link->data;
5649 
5650  if (filter->function == function &&
5651  filter->user_data == user_data)
5652  {
5653  _dbus_list_remove_link (&connection->filter_list, link);
5654  filter->function = NULL;
5655 
5656  break;
5657  }
5658 
5659  link = _dbus_list_get_prev_link (&connection->filter_list, link);
5660  filter = NULL;
5661  }
5662 
5663  CONNECTION_UNLOCK (connection);
5664 
5665 #ifndef DBUS_DISABLE_CHECKS
5666  if (filter == NULL)
5667  {
5668  _dbus_warn_check_failed ("Attempt to remove filter function %p user data %p, but no such filter has been added\n",
5669  function, user_data);
5670  return;
5671  }
5672 #endif
5673 
5674  /* Call application code */
5675  if (filter->free_user_data_function)
5676  (* filter->free_user_data_function) (filter->user_data);
5677 
5678  filter->free_user_data_function = NULL;
5679  filter->user_data = NULL;
5680 
5681  _dbus_message_filter_unref (filter);
5682 }
5683 
5699 static dbus_bool_t
5700 _dbus_connection_register_object_path (DBusConnection *connection,
5701  dbus_bool_t fallback,
5702  const char *path,
5703  const DBusObjectPathVTable *vtable,
5704  void *user_data,
5705  DBusError *error)
5706 {
5707  char **decomposed_path;
5708  dbus_bool_t retval;
5709 
5710  if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
5711  return FALSE;
5712 
5713  CONNECTION_LOCK (connection);
5714 
5715  retval = _dbus_object_tree_register (connection->objects,
5716  fallback,
5717  (const char **) decomposed_path, vtable,
5718  user_data, error);
5719 
5720  CONNECTION_UNLOCK (connection);
5721 
5722  dbus_free_string_array (decomposed_path);
5723 
5724  return retval;
5725 }
5726 
5741  const char *path,
5742  const DBusObjectPathVTable *vtable,
5743  void *user_data,
5744  DBusError *error)
5745 {
5746  _dbus_return_val_if_fail (connection != NULL, FALSE);
5747  _dbus_return_val_if_fail (path != NULL, FALSE);
5748  _dbus_return_val_if_fail (path[0] == '/', FALSE);
5749  _dbus_return_val_if_fail (vtable != NULL, FALSE);
5750 
5751  return _dbus_connection_register_object_path (connection, FALSE, path, vtable, user_data, error);
5752 }
5753 
5771  const char *path,
5772  const DBusObjectPathVTable *vtable,
5773  void *user_data)
5774 {
5775  dbus_bool_t retval;
5776  DBusError error = DBUS_ERROR_INIT;
5777 
5778  _dbus_return_val_if_fail (connection != NULL, FALSE);
5779  _dbus_return_val_if_fail (path != NULL, FALSE);
5780  _dbus_return_val_if_fail (path[0] == '/', FALSE);
5781  _dbus_return_val_if_fail (vtable != NULL, FALSE);
5782 
5783  retval = _dbus_connection_register_object_path (connection, FALSE, path, vtable, user_data, &error);
5784 
5786  {
5787  _dbus_warn ("%s\n", error.message);
5788  dbus_error_free (&error);
5789  return FALSE;
5790  }
5791 
5792  return retval;
5793 }
5794 
5811  const char *path,
5812  const DBusObjectPathVTable *vtable,
5813  void *user_data,
5814  DBusError *error)
5815 {
5816  _dbus_return_val_if_fail (connection != NULL, FALSE);
5817  _dbus_return_val_if_fail (path != NULL, FALSE);
5818  _dbus_return_val_if_fail (path[0] == '/', FALSE);
5819  _dbus_return_val_if_fail (vtable != NULL, FALSE);
5820 
5821  return _dbus_connection_register_object_path (connection, TRUE, path, vtable, user_data, error);
5822 }
5823 
5843  const char *path,
5844  const DBusObjectPathVTable *vtable,
5845  void *user_data)
5846 {
5847  dbus_bool_t retval;
5848  DBusError error = DBUS_ERROR_INIT;
5849 
5850  _dbus_return_val_if_fail (connection != NULL, FALSE);
5851  _dbus_return_val_if_fail (path != NULL, FALSE);
5852  _dbus_return_val_if_fail (path[0] == '/', FALSE);
5853  _dbus_return_val_if_fail (vtable != NULL, FALSE);
5854 
5855  retval = _dbus_connection_register_object_path (connection, TRUE, path, vtable, user_data, &error);
5856 
5858  {
5859  _dbus_warn ("%s\n", error.message);
5860  dbus_error_free (&error);
5861  return FALSE;
5862  }
5863 
5864  return retval;
5865 }
5866 
5878  const char *path)
5879 {
5880  char **decomposed_path;
5881 
5882  _dbus_return_val_if_fail (connection != NULL, FALSE);
5883  _dbus_return_val_if_fail (path != NULL, FALSE);
5884  _dbus_return_val_if_fail (path[0] == '/', FALSE);
5885 
5886  if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
5887  return FALSE;
5888 
5889  CONNECTION_LOCK (connection);
5890 
5891  _dbus_object_tree_unregister_and_unlock (connection->objects, (const char **) decomposed_path);
5892 
5893  dbus_free_string_array (decomposed_path);
5894 
5895  return TRUE;
5896 }
5897 
5910  const char *path,
5911  void **data_p)
5912 {
5913  char **decomposed_path;
5914 
5915  _dbus_return_val_if_fail (connection != NULL, FALSE);
5916  _dbus_return_val_if_fail (path != NULL, FALSE);
5917  _dbus_return_val_if_fail (data_p != NULL, FALSE);
5918 
5919  *data_p = NULL;
5920 
5921  if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
5922  return FALSE;
5923 
5924  CONNECTION_LOCK (connection);
5925 
5926  *data_p = _dbus_object_tree_get_user_data_unlocked (connection->objects, (const char**) decomposed_path);
5927 
5928  CONNECTION_UNLOCK (connection);
5929 
5930  dbus_free_string_array (decomposed_path);
5931 
5932  return TRUE;
5933 }
5934 
5947  const char *parent_path,
5948  char ***child_entries)
5949 {
5950  char **decomposed_path;
5951  dbus_bool_t retval;
5952  _dbus_return_val_if_fail (connection != NULL, FALSE);
5953  _dbus_return_val_if_fail (parent_path != NULL, FALSE);
5954  _dbus_return_val_if_fail (parent_path[0] == '/', FALSE);
5955  _dbus_return_val_if_fail (child_entries != NULL, FALSE);
5956 
5957  if (!_dbus_decompose_path (parent_path, strlen (parent_path), &decomposed_path, NULL))
5958  return FALSE;
5959 
5960  CONNECTION_LOCK (connection);
5961 
5963  (const char **) decomposed_path,
5964  child_entries);
5965  dbus_free_string_array (decomposed_path);
5966 
5967  return retval;
5968 }
5969 
5970 static DBusDataSlotAllocator slot_allocator =
5971  _DBUS_DATA_SLOT_ALLOCATOR_INIT (_DBUS_LOCK_NAME (connection_slots));
5972 
5989 {
5990  return _dbus_data_slot_allocator_alloc (&slot_allocator,
5991  slot_p);
5992 }
5993 
6005 void
6006 dbus_connection_free_data_slot (dbus_int32_t *slot_p)
6007 {
6008  _dbus_return_if_fail (*slot_p >= 0);
6009 
6010  _dbus_data_slot_allocator_free (&slot_allocator, slot_p);
6011 }
6012 
6037  dbus_int32_t slot,
6038  void *data,
6039  DBusFreeFunction free_data_func)
6040 {
6041  DBusFreeFunction old_free_func;
6042  void *old_data;
6043  dbus_bool_t retval;
6044 
6045  _dbus_return_val_if_fail (connection != NULL, FALSE);
6046  _dbus_return_val_if_fail (slot >= 0, FALSE);
6047 
6048  SLOTS_LOCK (connection);
6049 
6050  retval = _dbus_data_slot_list_set (&slot_allocator,
6051  &connection->slot_list,
6052  slot, data, free_data_func,
6053  &old_free_func, &old_data);
6054 
6055  SLOTS_UNLOCK (connection);
6056 
6057  if (retval)
6058  {
6059  /* Do the actual free outside the connection lock */
6060  if (old_free_func)
6061  (* old_free_func) (old_data);
6062  }
6063 
6064  return retval;
6065 }
6066 
6084 void*
6086  dbus_int32_t slot)
6087 {
6088  void *res;
6089 
6090  _dbus_return_val_if_fail (connection != NULL, NULL);
6091  _dbus_return_val_if_fail (slot >= 0, NULL);
6092 
6093  SLOTS_LOCK (connection);
6094 
6095  res = _dbus_data_slot_list_get (&slot_allocator,
6096  &connection->slot_list,
6097  slot);
6098 
6099  SLOTS_UNLOCK (connection);
6100 
6101  return res;
6102 }
6103 
6110 void
6112 {
6113  _dbus_modify_sigpipe = will_modify_sigpipe != FALSE;
6114 }
6115 
6124 void
6126  long size)
6127 {
6128  _dbus_return_if_fail (connection != NULL);
6129 
6130  CONNECTION_LOCK (connection);
6132  size);
6133  CONNECTION_UNLOCK (connection);
6134 }
6135 
6142 long
6144 {
6145  long res;
6146 
6147  _dbus_return_val_if_fail (connection != NULL, 0);
6148 
6149  CONNECTION_LOCK (connection);
6150  res = _dbus_transport_get_max_message_size (connection->transport);
6151  CONNECTION_UNLOCK (connection);
6152  return res;
6153 }
6154 
6163 void
6165  long n)
6166 {
6167  _dbus_return_if_fail (connection != NULL);
6168 
6169  CONNECTION_LOCK (connection);
6171  n);
6172  CONNECTION_UNLOCK (connection);
6173 }
6174 
6181 long
6183 {
6184  long res;
6185 
6186  _dbus_return_val_if_fail (connection != NULL, 0);
6187 
6188  CONNECTION_LOCK (connection);
6190  CONNECTION_UNLOCK (connection);
6191  return res;
6192 }
6193 
6219 void
6221  long size)
6222 {
6223  _dbus_return_if_fail (connection != NULL);
6224 
6225  CONNECTION_LOCK (connection);
6227  size);
6228  CONNECTION_UNLOCK (connection);
6229 }
6230 
6237 long
6239 {
6240  long res;
6241 
6242  _dbus_return_val_if_fail (connection != NULL, 0);
6243 
6244  CONNECTION_LOCK (connection);
6246  CONNECTION_UNLOCK (connection);
6247  return res;
6248 }
6249 
6261 void
6263  long n)
6264 {
6265  _dbus_return_if_fail (connection != NULL);
6266 
6267  CONNECTION_LOCK (connection);
6269  n);
6270  CONNECTION_UNLOCK (connection);
6271 }
6272 
6279 long
6281 {
6282  long res;
6283 
6284  _dbus_return_val_if_fail (connection != NULL, 0);
6285 
6286  CONNECTION_LOCK (connection);
6288  CONNECTION_UNLOCK (connection);
6289  return res;
6290 }
6291 
6302 long
6304 {
6305  long res;
6306 
6307  _dbus_return_val_if_fail (connection != NULL, 0);
6308 
6309  CONNECTION_LOCK (connection);
6310  res = _dbus_counter_get_size_value (connection->outgoing_counter);
6311  CONNECTION_UNLOCK (connection);
6312  return res;
6313 }
6314 
6315 #ifdef DBUS_ENABLE_STATS
6316 void
6317 _dbus_connection_get_stats (DBusConnection *connection,
6318  dbus_uint32_t *in_messages,
6319  dbus_uint32_t *in_bytes,
6320  dbus_uint32_t *in_fds,
6321  dbus_uint32_t *in_peak_bytes,
6322  dbus_uint32_t *in_peak_fds,
6323  dbus_uint32_t *out_messages,
6324  dbus_uint32_t *out_bytes,
6325  dbus_uint32_t *out_fds,
6326  dbus_uint32_t *out_peak_bytes,
6327  dbus_uint32_t *out_peak_fds)
6328 {
6329  CONNECTION_LOCK (connection);
6330 
6331  if (in_messages != NULL)
6332  *in_messages = connection->n_incoming;
6333 
6334  _dbus_transport_get_stats (connection->transport,
6335  in_bytes, in_fds, in_peak_bytes, in_peak_fds);
6336 
6337  if (out_messages != NULL)
6338  *out_messages = connection->n_outgoing;
6339 
6340  if (out_bytes != NULL)
6341  *out_bytes = _dbus_counter_get_size_value (connection->outgoing_counter);
6342 
6343  if (out_fds != NULL)
6344  *out_fds = _dbus_counter_get_unix_fd_value (connection->outgoing_counter);
6345 
6346  if (out_peak_bytes != NULL)
6347  *out_peak_bytes = _dbus_counter_get_peak_size_value (connection->outgoing_counter);
6348 
6349  if (out_peak_fds != NULL)
6350  *out_peak_fds = _dbus_counter_get_peak_unix_fd_value (connection->outgoing_counter);
6351 
6352  CONNECTION_UNLOCK (connection);
6353 }
6354 #endif /* DBUS_ENABLE_STATS */
6355 
6363 long
6365 {
6366  long res;
6367 
6368  _dbus_return_val_if_fail (connection != NULL, 0);
6369 
6370  CONNECTION_LOCK (connection);
6372  CONNECTION_UNLOCK (connection);
6373  return res;
6374 }
6375 
6376 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
6377 
6383 const char*
6384 _dbus_connection_get_address (DBusConnection *connection)
6385 {
6386  return _dbus_transport_get_address (connection->transport);
6387 }
6388 #endif
6389 
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
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...
An atomic integer safe to increment or decrement from multiple threads.
Definition: dbus-sysdeps.h:279
void _dbus_pending_call_complete(DBusPendingCall *pending)
Calls notifier function for the pending call and sets the call to completed.
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...
DBusMessage * dbus_message_ref(DBusMessage *message)
Increments the reference count of a DBusMessage.
DBusList * filter_list
List of filters.
void _dbus_transport_set_max_received_unix_fds(DBusTransport *transport, long n)
See dbus_connection_set_max_received_unix_fds().
Internals of DBusTimeout.
Definition: dbus-timeout.c:40
void * user_data
User data for the function.
void dbus_message_lock(DBusMessage *message)
Locks a message.
Definition: dbus-message.c:407
void * _dbus_list_get_last(DBusList **list)
Gets the last data in the list.
Definition: dbus-list.c:596
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.
const char * _dbus_transport_get_server_id(DBusTransport *transport)
Gets the id of the server we are connected to (see dbus_server_get_id()).
dbus_bool_t _dbus_list_prepend(DBusList **list, void *data)
Prepends a value to the list.
Definition: dbus-list.c:292
DBusDispatchStatus
Indicates the status of incoming data on a DBusConnection.
const char * message
public error message field
Definition: dbus-errors.h:51
const char * _dbus_transport_get_address(DBusTransport *transport)
Gets the address of a transport.
DBusFreeFunction free_wakeup_main_data
free wakeup_main_data
Implementation of DBusWatch.
Definition: dbus-watch.c:40
#define NULL
A null pointer, defined appropriately for C or C++.
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.
void(* DBusFreeFunction)(void *memory)
The type of a function which frees a block of memory.
Definition: dbus-memory.h:63
dbus_bool_t _dbus_connection_add_timeout_unlocked(DBusConnection *connection, DBusTimeout *timeout)
Adds a timeout using the connection&#39;s DBusAddTimeoutFunction if available.
DBusList * queue_link
Preallocated link in the queue.
unsigned int have_connection_lock
Used to check locking.
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.
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
void _dbus_connection_queue_synthesized_message_link(DBusConnection *connection, DBusList *link)
Adds a link + message to the incoming message queue.
DBusConnection * _dbus_pending_call_get_connection_unlocked(DBusPendingCall *pending)
Gets the connection associated with this pending call.
void _dbus_object_tree_free_all_unlocked(DBusObjectTree *tree)
Free all the handlers in the tree.
More memory is needed to continue.
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
Definition: dbus-memory.c:701
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_uint32_t dbus_message_get_serial(DBusMessage *message)
Returns the serial of a message or 0 if none has been specified.
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
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...
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
DBusList * _dbus_list_get_last_link(DBusList **list)
Gets the last link in the list.
Definition: dbus-list.c:580
dbus_bool_t dbus_connection_get_windows_user(DBusConnection *connection, char **windows_sid_p)
Gets the Windows user SID of the connection if known.
void _dbus_connection_lock(DBusConnection *connection)
Acquires the connection lock.
dbus_bool_t _dbus_transport_get_socket_fd(DBusTransport *transport, DBusSocket *fd_p)
Get the socket file descriptor, if any.
DBusMessage * dbus_pending_call_steal_reply(DBusPendingCall *pending)
Gets the reply, or returns NULL if none has been received yet.
#define dbus_new(type, count)
Safe macro for using dbus_malloc().
Definition: dbus-memory.h:57
DBusList * disconnect_message_link
Preallocated list node for queueing the disconnection message.
void(* DBusWatchToggledFunction)(DBusWatch *watch, void *data)
Called when dbus_watch_get_enabled() may return a different value than it did before.
void dbus_connection_set_max_message_size(DBusConnection *connection, long size)
Specifies the maximum size message this connection is allowed to receive.
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.
void _dbus_list_remove_link(DBusList **list, DBusList *link)
Removes a link from the list.
Definition: dbus-list.c:527
void _dbus_timeout_list_free(DBusTimeoutList *timeout_list)
Frees a DBusTimeoutList.
Definition: dbus-timeout.c:211
long dbus_connection_get_outgoing_size(DBusConnection *connection)
Gets the approximate size in bytes of all messages in the outgoing message queue. ...
DBusConnection * dbus_connection_ref(DBusConnection *connection)
Increments the reference count of a DBusConnection.
dbus_bool_t dbus_connection_can_send_type(DBusConnection *connection, int type)
Tests whether a certain type can be send via the connection.
DBusMessage * message_borrowed
Filled in if the first incoming message has been borrowed; dispatch_acquired will be set by the borro...
#define DBUS_TYPE_STRING
Type code marking a UTF-8 encoded, nul-terminated Unicode string.
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.
DBusTimeoutList * _dbus_timeout_list_new(void)
Creates a new timeout list.
Definition: dbus-timeout.c:194
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
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...
unsigned int shareable
TRUE if libdbus owns a reference to the connection and can return it from dbus_connection_open() more...
void _dbus_list_append_link(DBusList **list, DBusList *link)
Appends a link to the list.
Definition: dbus-list.c:315
Internals of DBusCounter.
#define DBUS_ERROR_INIT
Expands to a suitable initializer for a DBusError on the stack.
Definition: dbus-errors.h:62
void * data
Data stored at this element.
Definition: dbus-list.h:38
DBusFreeFunction free_dispatch_status_data
free dispatch_status_data
DBusMessage * dbus_message_new(int message_type)
Constructs a new message of the given message type.
DBusFreeFunction free_user_data_function
Function to free the user data.
DBusList * incoming_messages
Queue of messages we have received, end of the list received most recently.
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...
dbus_bool_t _dbus_transport_get_unix_process_id(DBusTransport *transport, unsigned long *pid)
See dbus_connection_get_unix_process_id().
const char * dbus_message_get_signature(DBusMessage *message)
Gets the type signature of the message, i.e.
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_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...
Message has not had any effect - see if other handlers want it.
Definition: dbus-shared.h:69
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().
void dbus_message_iter_init_append(DBusMessage *message, DBusMessageIter *iter)
Initializes a DBusMessageIter for appending arguments to the end of a message.
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.
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...
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
void _dbus_watch_list_free(DBusWatchList *watch_list)
Frees a DBusWatchList.
Definition: dbus-watch.c:249
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.
void _dbus_object_tree_unregister_and_unlock(DBusObjectTree *tree, const char **path)
Unregisters an object subtree that was registered with the same path.
#define DBUS_INTERFACE_PEER
The interface supported by most dbus peers.
Definition: dbus-shared.h:99
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
void _dbus_connection_close_if_only_one_ref(DBusConnection *connection)
Used internally to handle the semantics of dbus_server_set_new_connection_function().
#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
void dbus_connection_return_message(DBusConnection *connection, DBusMessage *message)
Used to return a message after peeking at it using dbus_connection_borrow_message().
DBusAtomic refcount
Reference count.
DBusCounter * _dbus_counter_ref(DBusCounter *counter)
Increments refcount of the counter.
void dbus_address_entries_free(DBusAddressEntry **entries)
Frees a NULL-terminated array of address entries.
Definition: dbus-address.c:189
dbus_bool_t _dbus_transport_get_windows_user(DBusTransport *transport, char **windows_sid_p)
See dbus_connection_get_windows_user().
Implementation details of DBusPendingCall - all fields are private.
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_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.
Implementation details of DBusConnection.
dbus_bool_t dbus_message_has_interface(DBusMessage *message, const char *iface)
Checks if the message has an interface.
void dbus_connection_remove_filter(DBusConnection *connection, DBusHandleMessageFunction function, void *user_data)
Removes a previously-added message filter.
struct DBusMutex DBusMutex
An opaque mutex type provided by the DBusThreadFunctions implementation installed by dbus_threads_ini...
Definition: dbus-threads.h:41
#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
DBusWatchList * _dbus_watch_list_new(void)
Creates a new watch list.
Definition: dbus-watch.c:232
DBusCounter * outgoing_counter
Counts size of outgoing messages.
dbus_bool_t(* DBusWatchAddFunction)(DBusWatchList *list, DBusWatch *watch)
Function to be called in protected_change_watch() with refcount held.
#define DBUS_MESSAGE_TYPE_ERROR
Message type of an error reply message, see dbus_message_get_type()
DBusList * _dbus_list_alloc_link(void *data)
Allocates a linked list node.
Definition: dbus-list.c:242
dbus_bool_t dbus_connection_get_unix_user(DBusConnection *connection, unsigned long *uid)
Gets the UNIX user ID of the connection if known.
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.
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...
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
Definition: dbus-string.c:175
DBusMessage * dbus_message_new_signal(const char *path, const char *iface, const char *name)
Constructs a new message representing a signal emission.
long _dbus_transport_get_max_message_size(DBusTransport *transport)
See dbus_connection_get_max_message_size().
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_bool_t _dbus_list_remove(DBusList **list, void *data)
Removes a value from the list.
Definition: dbus-list.c:415
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...
DBusDispatchStatusFunction dispatch_status_function
Function on dispatch status changes.
DBusHandlerResult
Results that a message handler can return.
Definition: dbus-shared.h:66
Hash keys are strings.
Definition: dbus-hash.h:69
DBusMessage * _dbus_connection_get_message_to_send(DBusConnection *connection)
Gets the next outgoing message.
DBusList * _dbus_list_pop_first_link(DBusList **list)
Removes the first link in the list and returns it.
Definition: dbus-list.c:628
Hash iterator object.
Definition: dbus-hash.h:49
DBusMessageIter struct; contains no public fields.
Definition: dbus-message.h:51
void dbus_connection_steal_borrowed_message(DBusConnection *connection, DBusMessage *message)
Used to keep a message after peeking at it using dbus_connection_borrow_message().
void * _dbus_list_get_first(DBusList **list)
Gets the first data in the list.
Definition: dbus-list.c:612
dbus_bool_t _dbus_pending_call_get_completed_unlocked(DBusPendingCall *pending)
Checks whether the pending call has received a reply yet, or not.
#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
void dbus_connection_free_data_slot(dbus_int32_t *slot_p)
Deallocates a global ID for connection data slots.
#define DBUS_ERROR_UNKNOWN_METHOD
Method name you invoked isn&#39;t known by the object you invoked it on.
const char * dbus_message_get_destination(DBusMessage *message)
Gets the destination of a message or NULL if there is none set.
Internal struct representing a message filter function.
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
#define DBUS_PATH_LOCAL
The object path used in local/in-process-generated messages.
Definition: dbus-shared.h:82
void(* DBusRemoveTimeoutFunction)(DBusTimeout *timeout, void *data)
Called when libdbus no longer needs a timeout to be monitored by the main loop.
dbus_bool_t _dbus_list_copy(DBusList **list, DBusList **dest)
Copies a list.
Definition: dbus-list.c:697
void _dbus_connection_block_pending_call(DBusPendingCall *pending)
Blocks until a pending call times out or gets a reply.
DBusWatchList * watches
Stores active watches.
DBusRMutex * mutex
Lock on the entire DBusConnection.
dbus_bool_t _dbus_transport_get_is_connected(DBusTransport *transport)
Returns TRUE if the transport has not been disconnected.
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_bool_t _dbus_hash_table_remove_int(DBusHashTable *table, int key)
Removes the hash entry for the given key.
Definition: dbus-hash.c:1151
int _dbus_connection_get_pending_fds_count(DBusConnection *connection)
Return how many file descriptors are pending in the loader.
dbus_bool_t dbus_message_set_error_name(DBusMessage *message, const char *error_name)
Sets the name of the error (DBUS_MESSAGE_TYPE_ERROR).
There is more data to potentially convert to messages.
Socket interface.
Definition: dbus-sysdeps.h:148
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.
DBusConnection * dbus_connection_open_private(const char *address, DBusError *error)
Opens a new, dedicated connection to a remote address.
DBusAtomic refcount
Reference count.
const char * dbus_message_get_member(DBusMessage *message)
Gets the interface member being invoked (DBUS_MESSAGE_TYPE_METHOD_CALL) or emitted (DBUS_MESSAGE_TYPE...
DBusPreallocatedSend * dbus_connection_preallocate_send(DBusConnection *connection)
Preallocates resources needed to send a message, allowing the message to be sent without the possibil...
Virtual table that must be implemented to handle a portion of the object path hierarchy.
Internals of DBusMessage.
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.
dbus_bool_t dbus_pending_call_get_completed(DBusPendingCall *pending)
Checks whether the pending call has received a reply yet, or not.
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
long _dbus_transport_get_max_received_unix_fds(DBusTransport *transport)
See dbus_connection_set_max_received_unix_fds().
Hash keys are integers.
Definition: dbus-hash.h:70
DBUS_PRIVATE_EXPORT void _dbus_rmutex_unlock(DBusRMutex *mutex)
Unlocks a mutex.
Definition: dbus-threads.c:150
#define DBUS_ERROR_OBJECT_PATH_IN_USE
There&#39;s already an object with the requested object path.
#define dbus_new0(type, count)
Safe macro for using dbus_malloc0().
Definition: dbus-memory.h:58
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_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
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().
void _dbus_connection_remove_watch_unlocked(DBusConnection *connection, DBusWatch *watch)
Removes a watch using the connection&#39;s DBusRemoveWatchFunction if available.
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().
dbus_bool_t _dbus_pending_call_is_timeout_added_unlocked(DBusPendingCall *pending)
Checks to see if a timeout has been added.
void * _dbus_hash_iter_get_value(DBusHashIter *iter)
Gets the value of the current entry.
Definition: dbus-hash.c:613
void * dispatch_status_data
Application data for dispatch_status_function.
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
Definition: dbus-types.h:35
dbus_bool_t _dbus_connection_has_messages_to_send_unlocked(DBusConnection *connection)
Checks whether there are messages in the outgoing message queue.
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.
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.
DBusTransport * transport
Object that sends/receives messages over network.
DBusDispatchStatus dbus_connection_dispatch(DBusConnection *connection)
Processes any incoming data.
dbus_bool_t dbus_connection_send(DBusConnection *connection, DBusMessage *message, dbus_uint32_t *serial)
Adds a message to the outgoing message queue.
dbus_bool_t _dbus_transport_peek_is_authenticated(DBusTransport *transport)
Returns TRUE if we have been authenticated.
DBusDispatchStatus dbus_connection_get_dispatch_status(DBusConnection *connection)
Gets the current state of the incoming message queue.
All currently available data has been processed.
dbus_bool_t(* DBusAddTimeoutFunction)(DBusTimeout *timeout, void *data)
Called when libdbus needs a new timeout to be monitored by the main loop.
void * dbus_connection_get_data(DBusConnection *connection, dbus_int32_t slot)
Retrieves data previously set with dbus_connection_set_data().
DBusTimeoutList * timeouts
Stores active timeouts.
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.
dbus_bool_t(* DBusTimeoutAddFunction)(DBusTimeoutList *list, DBusTimeout *timeout)
Function to be called in protected_change_timeout() with refcount held.
long dbus_connection_get_max_message_size(DBusConnection *connection)
Gets the value set by dbus_connection_set_max_message_size().
DBusHashTable * pending_replies
Hash of message serials to DBusPendingCall.
Internals of DBusObjectTree.
void _dbus_warn(const char *format,...)
Prints a warning message to stderr.
void _dbus_counter_unref(DBusCounter *counter)
Decrements refcount of the counter and possibly finalizes the counter.
dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
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_bool_t _dbus_list_append(DBusList **list, void *data)
Appends a value to the list.
Definition: dbus-list.c:270
dbus_bool_t _dbus_decompose_path(const char *data, int len, char ***path, int *path_len)
Decompose an object path.
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_bool_t dbus_connection_get_unix_process_id(DBusConnection *connection, unsigned long *pid)
Gets the process ID of the connection if any.
dbus_bool_t dbus_connection_get_is_authenticated(DBusConnection *connection)
Gets whether the connection was authenticated.
void dbus_connection_close(DBusConnection *connection)
Closes a private connection, so no further data can be sent or received.
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.
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...
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...
dbus_bool_t io_path_acquired
Someone has transport io path (can use the transport to read/write messages)
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
void(* DBusWakeupMainFunction)(void *data)
Called when the main loop&#39;s thread should be notified that there&#39;s now work to do.
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
Internals of DBusAddressEntry.
Definition: dbus-address.c:43
DBusList * outgoing_messages
Queue of messages we need to send, send the end of the list first.
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.
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...
DBusObjectTree * objects
Object path handlers registered with this connection.
long dbus_connection_get_outgoing_unix_fds(DBusConnection *connection)
Gets the approximate number of uni fds of all messages in the outgoing message queue.
void(* DBusWatchRemoveFunction)(DBusWatchList *list, DBusWatch *watch)
Function to be called in protected_change_watch() with refcount held.
dbus_uint32_t client_serial
Client serial.
long dbus_connection_get_max_received_size(DBusConnection *connection)
Gets the value set by dbus_connection_set_max_received_size().
DBusCMutex * io_path_mutex
Protects io_path_acquired.
#define DBUS_MESSAGE_TYPE_METHOD_CALL
Message type of a method call message, see dbus_message_get_type()
DBusConnection * dbus_connection_open(const char *address, DBusError *error)
Gets a connection to a remote address.
void _dbus_connection_unref_unlocked(DBusConnection *connection)
Decrements the reference count of a DBusConnection.
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.
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_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 ...
Object representing an exception.
Definition: dbus-errors.h:48
void _dbus_hash_iter_remove_entry(DBusHashIter *iter)
Removes the current entry from the hash table.
Definition: dbus-hash.c:592
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
void _dbus_get_monotonic_time(long *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
void _dbus_disable_sigpipe(void)
signal (SIGPIPE, SIG_IGN);
dbus_bool_t _dbus_transport_get_is_anonymous(DBusTransport *transport)
See dbus_connection_get_is_anonymous().
void * _dbus_list_pop_first(DBusList **list)
Removes the first value in the list and returns it.
Definition: dbus-list.c:649
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...
dbus_bool_t dbus_message_append_args(DBusMessage *message, int first_arg_type,...)
Appends fields to a message given a variable argument list.
#define DBUS_ERROR_UNKNOWN_OBJECT
Object you invoked a method on isn&#39;t known.
dbus_bool_t dbus_connection_get_is_anonymous(DBusConnection *connection)
Gets whether the connection is not authenticated as a specific user.
#define DBUS_MESSAGE_TYPE_SIGNAL
Message type of a signal message, see dbus_message_get_type()
dbus_bool_t _dbus_connection_add_watch_unlocked(DBusConnection *connection, DBusWatch *watch)
Adds a watch using the connection&#39;s DBusAddWatchFunction if available.
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_uint32_t dbus_message_get_reply_serial(DBusMessage *message)
Returns the serial that the message is a reply to or 0 if none.
long dbus_connection_get_max_message_unix_fds(DBusConnection *connection)
Gets the value set by dbus_connection_set_max_message_unix_fds().
DBusWakeupMainFunction wakeup_main_function
Function to wake up the mainloop.
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...
void _dbus_cmutex_unlock(DBusCMutex *mutex)
Unlocks a mutex.
Definition: dbus-threads.c:164
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...
DBusDataSlotList slot_list
Data stored by allocated integer ID.
DBusPendingCall * dbus_pending_call_ref(DBusPendingCall *pending)
Increments the reference count on a pending call.
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...
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_uint32_t _dbus_pending_call_get_reply_serial_unlocked(DBusPendingCall *pending)
Gets the reply&#39;s serial number.
DBusTransport * _dbus_transport_open(DBusAddressEntry *entry, DBusError *error)
Try to open a new transport for the given address entry.
dbus_uint32_t _dbus_connection_get_next_client_serial(DBusConnection *connection)
Allocate and return the next non-zero serial number for outgoing messages.
DBusConnection * _dbus_connection_new_for_transport(DBusTransport *transport)
Creates a new connection for the given transport.
#define _DBUS_UNLOCK(name)
Unlocks a global lock.
unsigned int disconnected_message_arrived
We popped or are dispatching the disconnected message.
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init().
Definition: dbus-string.c:259
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 ...
unsigned int disconnected_message_processed
We did our default handling of the disconnected message, such as closing the connection.
dbus_bool_t _dbus_transport_get_unix_user(DBusTransport *transport, unsigned long *uid)
See dbus_connection_get_unix_user().
void * _dbus_data_slot_list_get(DBusDataSlotAllocator *allocator, DBusDataSlotList *list, int slot)
Retrieves data previously set with _dbus_data_slot_list_set_data().
#define CONNECTION_UNLOCK(connection)
shorter and more visible way to write _dbus_connection_unlock()
void(* DBusTimeoutToggledFunction)(DBusTimeout *timeout, void *data)
Called when dbus_timeout_get_enabled() may return a different value than it did before.
unsigned int route_peer_messages
If TRUE, if org.freedesktop.DBus.Peer messages have a bus name, don&#39;t handle them automatically...
#define TRUE
Expands to "1".
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...
void _dbus_data_slot_list_init(DBusDataSlotList *list)
Initializes a slot list.
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called.
Data structure that stores the actual user data set at a given slot.
Definition: dbus-dataslot.h:69
DBusCondVar * io_path_cond
Notify when io_path_acquired is available.
void(* DBusTimeoutToggleFunction)(DBusTimeoutList *list, DBusTimeout *timeout, dbus_bool_t enabled)
Function to be called in protected_change_timeout() with refcount held.
void _dbus_condvar_new_at_location(DBusCondVar **location_p)
This does the same thing as _dbus_condvar_new.
Definition: dbus-threads.c:199
DBusDispatchStatus last_dispatch_status
The last dispatch status we reported to the application.
unsigned int exit_on_disconnect
If TRUE, exit after handling disconnect signal.
dbus_bool_t _dbus_transport_set_connection(DBusTransport *transport, DBusConnection *connection)
Sets the connection using this transport.
#define DBUS_ERROR_FAILED
A generic error; "something went wrong" - see the error message for more.
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
void _dbus_list_free_link(DBusList *link)
Frees a linked list node allocated with _dbus_list_alloc_link.
Definition: dbus-list.c:254
void dbus_move_error(DBusError *src, DBusError *dest)
Moves an error src into dest, freeing src and overwriting dest.
Definition: dbus-errors.c:279
const char * name
public error name field
Definition: dbus-errors.h:50
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...
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.
dbus_bool_t dbus_set_error_from_message(DBusError *error, DBusMessage *message)
Sets a DBusError based on the contents of the given message.
dbus_bool_t(* DBusAddWatchFunction)(DBusWatch *watch, void *data)
Called when libdbus needs a new watch to be monitored by the main loop.
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
#define DBUS_TYPE_UNIX_FD
Type code marking a unix file descriptor.
void(* DBusWatchToggleFunction)(DBusWatchList *list, DBusWatch *watch, dbus_bool_t enabled)
Function to be called in protected_change_watch() with refcount held.
void dbus_pending_call_unref(DBusPendingCall *pending)
Decrements the reference count on a pending call, freeing it if the count reaches 0...
Object representing a transport such as a socket.
void(* DBusRemoveWatchFunction)(DBusWatch *watch, void *data)
Called when libdbus no longer needs a watch to be monitored by the main loop.
DBusWatchList implementation details.
Definition: dbus-watch.c:214
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...
int n_incoming
Length of incoming queue.
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.
DBusMessage * dbus_connection_pop_message(DBusConnection *connection)
Returns the first-received message from the incoming message queue, removing it from the queue...
An allocator that tracks a set of slot IDs.
Definition: dbus-dataslot.h:55
#define DBUS_TYPE_INVALID
Type code that is never equal to a legitimate type code.
Definition: dbus-protocol.h:60
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).
void _dbus_exit(int code)
Exit the process, returning the given value.
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...
Internals of DBusPreallocatedSend.
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...
void(* DBusDispatchStatusFunction)(DBusConnection *connection, DBusDispatchStatus new_status, void *data)
Called when the return value of dbus_connection_get_dispatch_status() may have changed.
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...
DBusList * counter_link
Preallocated link in the resource counter.
DBusObjectTree * _dbus_object_tree_new(DBusConnection *connection)
Creates a new object tree, representing a mapping from paths to handler vtables.
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
void dbus_pending_call_block(DBusPendingCall *pending)
Block until the pending call is completed.
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
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
int n_outgoing
Length of outgoing queue.
DBusCMutex * dispatch_mutex
Protects dispatch_acquired.
DBUS_PRIVATE_EXPORT DBusPendingCall * _dbus_pending_call_new_unlocked(DBusConnection *connection, int timeout_milliseconds, DBusTimeoutHandler timeout_handler)
Creates a new pending reply object.
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
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.
void(* DBusTimeoutRemoveFunction)(DBusTimeoutList *list, DBusTimeout *timeout)
Function to be called in protected_change_timeout() with refcount held.
A node in a linked list.
Definition: dbus-list.h:34
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.
void _dbus_hash_iter_init(DBusHashTable *table, DBusHashIter *iter)
Initializes a hash table iterator.
Definition: dbus-hash.c:517
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
void dbus_free_string_array(char **str_array)
Frees a NULL-terminated array of strings.
Definition: dbus-memory.c:749
DBusHandlerResult(* DBusHandleMessageFunction)(DBusConnection *connection, DBusMessage *message, void *user_data)
Called when a message needs to be handled.
DBusTransport * _dbus_transport_ref(DBusTransport *transport)
Increments the reference count for the transport.
dbus_bool_t _dbus_transport_try_to_authenticate(DBusTransport *transport)
Returns TRUE if we have been authenticated.
DBusCondVar * dispatch_cond
Notify when dispatch_acquired is available.
void _dbus_connection_remove_timeout_unlocked(DBusConnection *connection, DBusTimeout *timeout)
Removes a timeout using the connection&#39;s DBusRemoveTimeoutFunction if available.
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.
void _dbus_rmutex_free_at_location(DBusRMutex **location_p)
Frees a DBusRMutex; does nothing if passed a NULL pointer.
Definition: dbus-threads.c:94
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...
long _dbus_transport_get_max_received_size(DBusTransport *transport)
See dbus_connection_get_max_received_size().
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.
long _dbus_transport_get_max_message_unix_fds(DBusTransport *transport)
See dbus_connection_get_max_message_unix_fds().
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
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
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...
#define DBUS_ERROR_DISCONNECTED
The connection is disconnected and you&#39;re trying to use it.
DBusCounter * _dbus_counter_new(void)
Creates a new DBusCounter.
void _dbus_cmutex_lock(DBusCMutex *mutex)
Locks a mutex.
Definition: dbus-threads.c:136
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...
void _dbus_transport_set_allow_anonymous(DBusTransport *transport, dbus_bool_t value)
See dbus_connection_set_allow_anonymous()
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...
DBusHandleMessageFunction function
Function to call to filter.
#define DBUS_ERROR_NO_MEMORY
There was not enough memory to complete an operation.
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.
dbus_bool_t dbus_message_iter_append_basic(DBusMessageIter *iter, int type, const void *value)
Appends a basic-typed value to the message.
void _dbus_transport_set_max_received_size(DBusTransport *transport, long size)
See dbus_connection_set_max_received_size().
void(* DBusForeachFunction)(void *element, void *data)
Used to iterate over each item in a collection, such as a DBusList.
DBusList * expired_messages
Messages that will be released when we next unlock.
DBusList * _dbus_list_get_first_link(DBusList **list)
Gets the first link in the list.
Definition: dbus-list.c:567
#define FALSE
Expands to "0".
int dbus_message_get_type(DBusMessage *message)
Gets the type of a message.
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...
dbus_bool_t dbus_connection_get_unix_fd(DBusConnection *connection, int *fd)
Get the UNIX file descriptor of the connection, if any.
int _dbus_transport_get_pending_fds_count(DBusTransport *transport)
Return how many file descriptors are pending in the loader.
void _dbus_list_prepend_link(DBusList **list, DBusList *link)
Prepends a link to the list.
Definition: dbus-list.c:333
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
#define _DBUS_LOCK(name)
Locks a global lock, initializing it first if necessary.
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
#define _DBUS_LOCK_NAME(name)
Expands to name of a global lock variable.
dbus_bool_t _dbus_transport_can_pass_unix_fd(DBusTransport *transport)
Returns TRUE if the transport supports sending unix fds.
void _dbus_cmutex_free_at_location(DBusCMutex **location_p)
Frees a DBusCMutex; does nothing if passed a NULL pointer.
Definition: dbus-threads.c:107
char * server_guid
GUID of server if we are in shared_connections, NULL if server GUID is unknown or connection is priva...
dbus_bool_t dbus_connection_get_is_connected(DBusConnection *connection)
Gets whether the connection is currently open.
void dbus_connection_send_preallocated(DBusConnection *connection, DBusPreallocatedSend *preallocated, DBusMessage *message, dbus_uint32_t *client_serial)
Sends a message using preallocated resources.
void dbus_connection_unref(DBusConnection *connection)
Decrements the reference count of a DBusConnection, and finalizes it if the count reaches zero...
dbus_int32_t _dbus_atomic_get(DBusAtomic *atomic)
Atomically get the value of an integer.
Internals of DBusHashTable.
Definition: dbus-hash.c:168
void _dbus_sleep_milliseconds(int milliseconds)
Sleeps the given number of milliseconds.
void _dbus_object_tree_unref(DBusObjectTree *tree)
Decrement the reference count.
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_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...
DBusMessage * dbus_connection_borrow_message(DBusConnection *connection)
Returns the first-received message from the incoming message queue, leaving it in the queue...
DBusConnection * _dbus_connection_ref_unlocked(DBusConnection *connection)
Increments the reference count of a DBusConnection.
Message has had its effect - no need to run more handlers.
Definition: dbus-shared.h:68
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 ...
char * _dbus_strdup(const char *str)
Duplicates a string.
#define CONNECTION_LOCK(connection)
Internals of DBusPendingCall.
dbus_bool_t dispatch_acquired
Someone has dispatch path (can drain incoming queue)
void _dbus_transport_disconnect(DBusTransport *transport)
Closes our end of the connection to a remote application.
DBusTimeout * _dbus_pending_call_get_timeout_unlocked(DBusPendingCall *pending)
Retrives the timeout.
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().
dbus_bool_t dbus_connection_add_filter(DBusConnection *connection, DBusHandleMessageFunction function, void *user_data, DBusFreeFunction free_data_function)
Adds a message filter.
dbus_bool_t dbus_connection_unregister_object_path(DBusConnection *connection, const char *path)
Unregisters the handler registered with exactly the given path.
long dbus_connection_get_max_received_unix_fds(DBusConnection *connection)
Gets the value set by dbus_connection_set_max_received_unix_fds().
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.
void _dbus_connection_unlock(DBusConnection *connection)
Releases the connection lock.
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)...
void _dbus_transport_set_max_message_size(DBusTransport *transport, long size)
See dbus_connection_set_max_message_size().
void dbus_message_unref(DBusMessage *message)
Decrements the reference count of a DBusMessage, freeing the message if the count reaches 0...
void * wakeup_main_data
Application data for wakeup_main_function.
Need more memory in order to return DBUS_HANDLER_RESULT_HANDLED or DBUS_HANDLER_RESULT_NOT_YET_HANDLE...
Definition: dbus-shared.h:70
void dbus_connection_flush(DBusConnection *connection)
Blocks until the outgoing message queue is empty.
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_bool_t dbus_connection_has_messages_to_send(DBusConnection *connection)
Checks whether there are messages in the outgoing message queue.
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_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...
DBusDispatchStatus _dbus_transport_get_dispatch_status(DBusTransport *transport)
Reports our current dispatch status (whether there&#39;s buffered data to be queued as messages...
void _dbus_pending_call_set_timeout_added_unlocked(DBusPendingCall *pending, dbus_bool_t is_added)
Sets wether the timeout has been added.
DBusConnection * connection
Connection we&#39;d send the message to.
DBusConnection * _dbus_pending_call_get_connection_and_lock(DBusPendingCall *pending)
Gets the connection associated with this pending call.
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...
dbus_bool_t dbus_type_is_valid(int typecode)
Return TRUE if the argument is a valid typecode.
void _dbus_transport_set_max_message_unix_fds(DBusTransport *transport, long n)
See dbus_connection_set_max_message_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...
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_bool_t dbus_connection_get_socket(DBusConnection *connection, int *fd)
Gets the underlying Windows or UNIX socket file descriptor of the connection, if any.
void dbus_connection_free_preallocated_send(DBusConnection *connection, DBusPreallocatedSend *preallocated)
Frees preallocated message-sending resources from dbus_connection_preallocate_send().
void dbus_message_set_serial(DBusMessage *message, dbus_uint32_t serial)
Sets the serial number of a message.
Definition: dbus-message.c:277
DBusTimeoutList implementation details.
Definition: dbus-timeout.c:176
DBusMessage * dbus_message_new_method_return(DBusMessage *method_call)
Constructs a message that is a reply to a method call.
DBusRMutex * slot_mutex
Lock on slot_list so overall connection lock need not be taken.
void _dbus_transport_unref(DBusTransport *transport)
Decrements the reference count for the transport.
long _dbus_counter_get_unix_fd_value(DBusCounter *counter)
Gets the current value of the unix fd counter.
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...
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_EXPORT int dbus_timeout_get_interval(DBusTimeout *timeout)
Gets the timeout interval.
Definition: dbus-timeout.c:416
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...
long _dbus_counter_get_size_value(DBusCounter *counter)
Gets the current value of the size counter.
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.