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00024 #include <config.h>
00025 #include "dbus-shared.h"
00026 #include "dbus-connection.h"
00027 #include "dbus-list.h"
00028 #include "dbus-timeout.h"
00029 #include "dbus-transport.h"
00030 #include "dbus-watch.h"
00031 #include "dbus-connection-internal.h"
00032 #include "dbus-pending-call-internal.h"
00033 #include "dbus-list.h"
00034 #include "dbus-hash.h"
00035 #include "dbus-message-internal.h"
00036 #include "dbus-threads.h"
00037 #include "dbus-protocol.h"
00038 #include "dbus-dataslot.h"
00039 #include "dbus-string.h"
00040 #include "dbus-pending-call.h"
00041 #include "dbus-object-tree.h"
00042 #include "dbus-threads-internal.h"
00043 #include "dbus-bus.h"
00044
00045 #ifdef DBUS_DISABLE_CHECKS
00046 #define TOOK_LOCK_CHECK(connection)
00047 #define RELEASING_LOCK_CHECK(connection)
00048 #define HAVE_LOCK_CHECK(connection)
00049 #else
00050 #define TOOK_LOCK_CHECK(connection) do { \
00051 _dbus_assert (!(connection)->have_connection_lock); \
00052 (connection)->have_connection_lock = TRUE; \
00053 } while (0)
00054 #define RELEASING_LOCK_CHECK(connection) do { \
00055 _dbus_assert ((connection)->have_connection_lock); \
00056 (connection)->have_connection_lock = FALSE; \
00057 } while (0)
00058 #define HAVE_LOCK_CHECK(connection) _dbus_assert ((connection)->have_connection_lock)
00059
00060 #endif
00061
00062 #define TRACE_LOCKS 1
00063
00064 #define CONNECTION_LOCK(connection) do { \
00065 if (TRACE_LOCKS) { _dbus_verbose (" LOCK: %s\n", _DBUS_FUNCTION_NAME); } \
00066 _dbus_mutex_lock ((connection)->mutex); \
00067 TOOK_LOCK_CHECK (connection); \
00068 } while (0)
00069
00070 #define CONNECTION_UNLOCK(connection) do { \
00071 if (TRACE_LOCKS) { _dbus_verbose (" UNLOCK: %s\n", _DBUS_FUNCTION_NAME); } \
00072 RELEASING_LOCK_CHECK (connection); \
00073 _dbus_mutex_unlock ((connection)->mutex); \
00074 } while (0)
00075
00076 #define DISPATCH_STATUS_NAME(s) \
00077 ((s) == DBUS_DISPATCH_COMPLETE ? "complete" : \
00078 (s) == DBUS_DISPATCH_DATA_REMAINS ? "data remains" : \
00079 (s) == DBUS_DISPATCH_NEED_MEMORY ? "need memory" : \
00080 "???")
00081
00202 typedef struct DBusMessageFilter DBusMessageFilter;
00203
00207 struct DBusMessageFilter
00208 {
00209 DBusAtomic refcount;
00210 DBusHandleMessageFunction function;
00211 void *user_data;
00212 DBusFreeFunction free_user_data_function;
00213 };
00214
00215
00219 struct DBusPreallocatedSend
00220 {
00221 DBusConnection *connection;
00222 DBusList *queue_link;
00223 DBusList *counter_link;
00224 };
00225
00226 static dbus_bool_t _dbus_modify_sigpipe = TRUE;
00227
00231 struct DBusConnection
00232 {
00233 DBusAtomic refcount;
00235 DBusMutex *mutex;
00237 DBusMutex *dispatch_mutex;
00238 DBusCondVar *dispatch_cond;
00239 DBusMutex *io_path_mutex;
00240 DBusCondVar *io_path_cond;
00242 DBusList *outgoing_messages;
00243 DBusList *incoming_messages;
00245 DBusMessage *message_borrowed;
00249 int n_outgoing;
00250 int n_incoming;
00252 DBusCounter *outgoing_counter;
00254 DBusTransport *transport;
00255 DBusWatchList *watches;
00256 DBusTimeoutList *timeouts;
00258 DBusList *filter_list;
00260 DBusDataSlotList slot_list;
00262 DBusHashTable *pending_replies;
00264 dbus_uint32_t client_serial;
00265 DBusList *disconnect_message_link;
00267 DBusWakeupMainFunction wakeup_main_function;
00268 void *wakeup_main_data;
00269 DBusFreeFunction free_wakeup_main_data;
00271 DBusDispatchStatusFunction dispatch_status_function;
00272 void *dispatch_status_data;
00273 DBusFreeFunction free_dispatch_status_data;
00275 DBusDispatchStatus last_dispatch_status;
00277 DBusList *link_cache;
00280 DBusObjectTree *objects;
00282 char *server_guid;
00284
00285
00286
00287
00288 dbus_bool_t dispatch_acquired;
00289 dbus_bool_t io_path_acquired;
00291 unsigned int shareable : 1;
00293 unsigned int exit_on_disconnect : 1;
00295 unsigned int route_peer_messages : 1;
00297 unsigned int disconnected_message_arrived : 1;
00301 unsigned int disconnected_message_processed : 1;
00305 #ifndef DBUS_DISABLE_CHECKS
00306 unsigned int have_connection_lock : 1;
00307 #endif
00308
00309 #ifndef DBUS_DISABLE_CHECKS
00310 int generation;
00311 #endif
00312 };
00313
00314 static DBusDispatchStatus _dbus_connection_get_dispatch_status_unlocked (DBusConnection *connection);
00315 static void _dbus_connection_update_dispatch_status_and_unlock (DBusConnection *connection,
00316 DBusDispatchStatus new_status);
00317 static void _dbus_connection_last_unref (DBusConnection *connection);
00318 static void _dbus_connection_acquire_dispatch (DBusConnection *connection);
00319 static void _dbus_connection_release_dispatch (DBusConnection *connection);
00320 static DBusDispatchStatus _dbus_connection_flush_unlocked (DBusConnection *connection);
00321 static void _dbus_connection_close_possibly_shared_and_unlock (DBusConnection *connection);
00322 static dbus_bool_t _dbus_connection_get_is_connected_unlocked (DBusConnection *connection);
00323
00324 static DBusMessageFilter *
00325 _dbus_message_filter_ref (DBusMessageFilter *filter)
00326 {
00327 _dbus_assert (filter->refcount.value > 0);
00328 _dbus_atomic_inc (&filter->refcount);
00329
00330 return filter;
00331 }
00332
00333 static void
00334 _dbus_message_filter_unref (DBusMessageFilter *filter)
00335 {
00336 _dbus_assert (filter->refcount.value > 0);
00337
00338 if (_dbus_atomic_dec (&filter->refcount) == 1)
00339 {
00340 if (filter->free_user_data_function)
00341 (* filter->free_user_data_function) (filter->user_data);
00342
00343 dbus_free (filter);
00344 }
00345 }
00346
00352 void
00353 _dbus_connection_lock (DBusConnection *connection)
00354 {
00355 CONNECTION_LOCK (connection);
00356 }
00357
00363 void
00364 _dbus_connection_unlock (DBusConnection *connection)
00365 {
00366 CONNECTION_UNLOCK (connection);
00367 }
00368
00376 static void
00377 _dbus_connection_wakeup_mainloop (DBusConnection *connection)
00378 {
00379 if (connection->wakeup_main_function)
00380 (*connection->wakeup_main_function) (connection->wakeup_main_data);
00381 }
00382
00383 #ifdef DBUS_BUILD_TESTS
00384
00394 dbus_bool_t
00395 _dbus_connection_queue_received_message (DBusConnection *connection,
00396 DBusMessage *message)
00397 {
00398 DBusList *link;
00399
00400 link = _dbus_list_alloc_link (message);
00401 if (link == NULL)
00402 return FALSE;
00403
00404 dbus_message_ref (message);
00405 _dbus_connection_queue_received_message_link (connection, link);
00406
00407 return TRUE;
00408 }
00409
00422 void
00423 _dbus_connection_test_get_locks (DBusConnection *connection,
00424 DBusMutex **mutex_loc,
00425 DBusMutex **dispatch_mutex_loc,
00426 DBusMutex **io_path_mutex_loc,
00427 DBusCondVar **dispatch_cond_loc,
00428 DBusCondVar **io_path_cond_loc)
00429 {
00430 *mutex_loc = connection->mutex;
00431 *dispatch_mutex_loc = connection->dispatch_mutex;
00432 *io_path_mutex_loc = connection->io_path_mutex;
00433 *dispatch_cond_loc = connection->dispatch_cond;
00434 *io_path_cond_loc = connection->io_path_cond;
00435 }
00436 #endif
00437
00446 void
00447 _dbus_connection_queue_received_message_link (DBusConnection *connection,
00448 DBusList *link)
00449 {
00450 DBusPendingCall *pending;
00451 dbus_int32_t reply_serial;
00452 DBusMessage *message;
00453
00454 _dbus_assert (_dbus_transport_get_is_authenticated (connection->transport));
00455
00456 _dbus_list_append_link (&connection->incoming_messages,
00457 link);
00458 message = link->data;
00459
00460
00461 reply_serial = dbus_message_get_reply_serial (message);
00462 if (reply_serial != -1)
00463 {
00464 pending = _dbus_hash_table_lookup_int (connection->pending_replies,
00465 reply_serial);
00466 if (pending != NULL)
00467 {
00468 if (_dbus_pending_call_is_timeout_added_unlocked (pending))
00469 _dbus_connection_remove_timeout_unlocked (connection,
00470 _dbus_pending_call_get_timeout_unlocked (pending));
00471
00472 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
00473 }
00474 }
00475
00476
00477
00478 connection->n_incoming += 1;
00479
00480 _dbus_connection_wakeup_mainloop (connection);
00481
00482 _dbus_verbose ("Message %p (%d %s %s %s '%s' reply to %u) added to incoming queue %p, %d incoming\n",
00483 message,
00484 dbus_message_get_type (message),
00485 dbus_message_get_path (message) ?
00486 dbus_message_get_path (message) :
00487 "no path",
00488 dbus_message_get_interface (message) ?
00489 dbus_message_get_interface (message) :
00490 "no interface",
00491 dbus_message_get_member (message) ?
00492 dbus_message_get_member (message) :
00493 "no member",
00494 dbus_message_get_signature (message),
00495 dbus_message_get_reply_serial (message),
00496 connection,
00497 connection->n_incoming);}
00498
00507 void
00508 _dbus_connection_queue_synthesized_message_link (DBusConnection *connection,
00509 DBusList *link)
00510 {
00511 HAVE_LOCK_CHECK (connection);
00512
00513 _dbus_list_append_link (&connection->incoming_messages, link);
00514
00515 connection->n_incoming += 1;
00516
00517 _dbus_connection_wakeup_mainloop (connection);
00518
00519 _dbus_verbose ("Synthesized message %p added to incoming queue %p, %d incoming\n",
00520 link->data, connection, connection->n_incoming);
00521 }
00522
00523
00531 dbus_bool_t
00532 _dbus_connection_has_messages_to_send_unlocked (DBusConnection *connection)
00533 {
00534 HAVE_LOCK_CHECK (connection);
00535 return connection->outgoing_messages != NULL;
00536 }
00537
00547 dbus_bool_t
00548 dbus_connection_has_messages_to_send (DBusConnection *connection)
00549 {
00550 dbus_bool_t v;
00551
00552 _dbus_return_val_if_fail (connection != NULL, FALSE);
00553
00554 CONNECTION_LOCK (connection);
00555 v = _dbus_connection_has_messages_to_send_unlocked (connection);
00556 CONNECTION_UNLOCK (connection);
00557
00558 return v;
00559 }
00560
00568 DBusMessage*
00569 _dbus_connection_get_message_to_send (DBusConnection *connection)
00570 {
00571 HAVE_LOCK_CHECK (connection);
00572
00573 return _dbus_list_get_last (&connection->outgoing_messages);
00574 }
00575
00584 void
00585 _dbus_connection_message_sent (DBusConnection *connection,
00586 DBusMessage *message)
00587 {
00588 DBusList *link;
00589
00590 HAVE_LOCK_CHECK (connection);
00591
00592
00593
00594
00595
00596
00597 link = _dbus_list_get_last_link (&connection->outgoing_messages);
00598 _dbus_assert (link != NULL);
00599 _dbus_assert (link->data == message);
00600
00601
00602 _dbus_list_unlink (&connection->outgoing_messages,
00603 link);
00604 _dbus_list_prepend_link (&connection->link_cache, link);
00605
00606 connection->n_outgoing -= 1;
00607
00608 _dbus_verbose ("Message %p (%d %s %s %s '%s') removed from outgoing queue %p, %d left to send\n",
00609 message,
00610 dbus_message_get_type (message),
00611 dbus_message_get_path (message) ?
00612 dbus_message_get_path (message) :
00613 "no path",
00614 dbus_message_get_interface (message) ?
00615 dbus_message_get_interface (message) :
00616 "no interface",
00617 dbus_message_get_member (message) ?
00618 dbus_message_get_member (message) :
00619 "no member",
00620 dbus_message_get_signature (message),
00621 connection, connection->n_outgoing);
00622
00623
00624 _dbus_message_remove_size_counter (message, connection->outgoing_counter,
00625 &link);
00626 _dbus_list_prepend_link (&connection->link_cache, link);
00627
00628 dbus_message_unref (message);
00629 }
00630
00632 typedef dbus_bool_t (* DBusWatchAddFunction) (DBusWatchList *list,
00633 DBusWatch *watch);
00635 typedef void (* DBusWatchRemoveFunction) (DBusWatchList *list,
00636 DBusWatch *watch);
00638 typedef void (* DBusWatchToggleFunction) (DBusWatchList *list,
00639 DBusWatch *watch,
00640 dbus_bool_t enabled);
00641
00642 static dbus_bool_t
00643 protected_change_watch (DBusConnection *connection,
00644 DBusWatch *watch,
00645 DBusWatchAddFunction add_function,
00646 DBusWatchRemoveFunction remove_function,
00647 DBusWatchToggleFunction toggle_function,
00648 dbus_bool_t enabled)
00649 {
00650 DBusWatchList *watches;
00651 dbus_bool_t retval;
00652
00653 HAVE_LOCK_CHECK (connection);
00654
00655
00656
00657
00658
00659 watches = connection->watches;
00660 if (watches)
00661 {
00662 connection->watches = NULL;
00663 _dbus_connection_ref_unlocked (connection);
00664 CONNECTION_UNLOCK (connection);
00665
00666 if (add_function)
00667 retval = (* add_function) (watches, watch);
00668 else if (remove_function)
00669 {
00670 retval = TRUE;
00671 (* remove_function) (watches, watch);
00672 }
00673 else
00674 {
00675 retval = TRUE;
00676 (* toggle_function) (watches, watch, enabled);
00677 }
00678
00679 CONNECTION_LOCK (connection);
00680 connection->watches = watches;
00681 _dbus_connection_unref_unlocked (connection);
00682
00683 return retval;
00684 }
00685 else
00686 return FALSE;
00687 }
00688
00689
00701 dbus_bool_t
00702 _dbus_connection_add_watch_unlocked (DBusConnection *connection,
00703 DBusWatch *watch)
00704 {
00705 return protected_change_watch (connection, watch,
00706 _dbus_watch_list_add_watch,
00707 NULL, NULL, FALSE);
00708 }
00709
00719 void
00720 _dbus_connection_remove_watch_unlocked (DBusConnection *connection,
00721 DBusWatch *watch)
00722 {
00723 protected_change_watch (connection, watch,
00724 NULL,
00725 _dbus_watch_list_remove_watch,
00726 NULL, FALSE);
00727 }
00728
00739 void
00740 _dbus_connection_toggle_watch_unlocked (DBusConnection *connection,
00741 DBusWatch *watch,
00742 dbus_bool_t enabled)
00743 {
00744 _dbus_assert (watch != NULL);
00745
00746 protected_change_watch (connection, watch,
00747 NULL, NULL,
00748 _dbus_watch_list_toggle_watch,
00749 enabled);
00750 }
00751
00753 typedef dbus_bool_t (* DBusTimeoutAddFunction) (DBusTimeoutList *list,
00754 DBusTimeout *timeout);
00756 typedef void (* DBusTimeoutRemoveFunction) (DBusTimeoutList *list,
00757 DBusTimeout *timeout);
00759 typedef void (* DBusTimeoutToggleFunction) (DBusTimeoutList *list,
00760 DBusTimeout *timeout,
00761 dbus_bool_t enabled);
00762
00763 static dbus_bool_t
00764 protected_change_timeout (DBusConnection *connection,
00765 DBusTimeout *timeout,
00766 DBusTimeoutAddFunction add_function,
00767 DBusTimeoutRemoveFunction remove_function,
00768 DBusTimeoutToggleFunction toggle_function,
00769 dbus_bool_t enabled)
00770 {
00771 DBusTimeoutList *timeouts;
00772 dbus_bool_t retval;
00773
00774 HAVE_LOCK_CHECK (connection);
00775
00776
00777
00778
00779
00780 timeouts = connection->timeouts;
00781 if (timeouts)
00782 {
00783 connection->timeouts = NULL;
00784 _dbus_connection_ref_unlocked (connection);
00785 CONNECTION_UNLOCK (connection);
00786
00787 if (add_function)
00788 retval = (* add_function) (timeouts, timeout);
00789 else if (remove_function)
00790 {
00791 retval = TRUE;
00792 (* remove_function) (timeouts, timeout);
00793 }
00794 else
00795 {
00796 retval = TRUE;
00797 (* toggle_function) (timeouts, timeout, enabled);
00798 }
00799
00800 CONNECTION_LOCK (connection);
00801 connection->timeouts = timeouts;
00802 _dbus_connection_unref_unlocked (connection);
00803
00804 return retval;
00805 }
00806 else
00807 return FALSE;
00808 }
00809
00822 dbus_bool_t
00823 _dbus_connection_add_timeout_unlocked (DBusConnection *connection,
00824 DBusTimeout *timeout)
00825 {
00826 return protected_change_timeout (connection, timeout,
00827 _dbus_timeout_list_add_timeout,
00828 NULL, NULL, FALSE);
00829 }
00830
00840 void
00841 _dbus_connection_remove_timeout_unlocked (DBusConnection *connection,
00842 DBusTimeout *timeout)
00843 {
00844 protected_change_timeout (connection, timeout,
00845 NULL,
00846 _dbus_timeout_list_remove_timeout,
00847 NULL, FALSE);
00848 }
00849
00860 void
00861 _dbus_connection_toggle_timeout_unlocked (DBusConnection *connection,
00862 DBusTimeout *timeout,
00863 dbus_bool_t enabled)
00864 {
00865 protected_change_timeout (connection, timeout,
00866 NULL, NULL,
00867 _dbus_timeout_list_toggle_timeout,
00868 enabled);
00869 }
00870
00871 static dbus_bool_t
00872 _dbus_connection_attach_pending_call_unlocked (DBusConnection *connection,
00873 DBusPendingCall *pending)
00874 {
00875 dbus_uint32_t reply_serial;
00876 DBusTimeout *timeout;
00877
00878 HAVE_LOCK_CHECK (connection);
00879
00880 reply_serial = _dbus_pending_call_get_reply_serial_unlocked (pending);
00881
00882 _dbus_assert (reply_serial != 0);
00883
00884 timeout = _dbus_pending_call_get_timeout_unlocked (pending);
00885
00886 if (!_dbus_connection_add_timeout_unlocked (connection, timeout))
00887 return FALSE;
00888
00889 if (!_dbus_hash_table_insert_int (connection->pending_replies,
00890 reply_serial,
00891 pending))
00892 {
00893 _dbus_connection_remove_timeout_unlocked (connection, timeout);
00894
00895 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
00896 HAVE_LOCK_CHECK (connection);
00897 return FALSE;
00898 }
00899
00900 _dbus_pending_call_set_timeout_added_unlocked (pending, TRUE);
00901
00902 _dbus_pending_call_ref_unlocked (pending);
00903
00904 HAVE_LOCK_CHECK (connection);
00905
00906 return TRUE;
00907 }
00908
00909 static void
00910 free_pending_call_on_hash_removal (void *data)
00911 {
00912 DBusPendingCall *pending;
00913 DBusConnection *connection;
00914
00915 if (data == NULL)
00916 return;
00917
00918 pending = data;
00919
00920 connection = _dbus_pending_call_get_connection_unlocked (pending);
00921
00922 HAVE_LOCK_CHECK (connection);
00923
00924 if (_dbus_pending_call_is_timeout_added_unlocked (pending))
00925 {
00926 _dbus_connection_remove_timeout_unlocked (connection,
00927 _dbus_pending_call_get_timeout_unlocked (pending));
00928
00929 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
00930 }
00931
00932
00933
00934
00935
00936
00937 _dbus_connection_ref_unlocked (connection);
00938 _dbus_pending_call_unref_and_unlock (pending);
00939 CONNECTION_LOCK (connection);
00940 _dbus_connection_unref_unlocked (connection);
00941 }
00942
00943 static void
00944 _dbus_connection_detach_pending_call_unlocked (DBusConnection *connection,
00945 DBusPendingCall *pending)
00946 {
00947
00948
00949
00950 _dbus_hash_table_remove_int (connection->pending_replies,
00951 _dbus_pending_call_get_reply_serial_unlocked (pending));
00952 }
00953
00954 static void
00955 _dbus_connection_detach_pending_call_and_unlock (DBusConnection *connection,
00956 DBusPendingCall *pending)
00957 {
00958
00959
00960
00961
00962
00963
00964
00965 _dbus_pending_call_ref_unlocked (pending);
00966 _dbus_hash_table_remove_int (connection->pending_replies,
00967 _dbus_pending_call_get_reply_serial_unlocked (pending));
00968 _dbus_pending_call_unref_and_unlock (pending);
00969 }
00970
00979 void
00980 _dbus_connection_remove_pending_call (DBusConnection *connection,
00981 DBusPendingCall *pending)
00982 {
00983 CONNECTION_LOCK (connection);
00984 _dbus_connection_detach_pending_call_and_unlock (connection, pending);
00985 }
00986
00996 static dbus_bool_t
00997 _dbus_connection_acquire_io_path (DBusConnection *connection,
00998 int timeout_milliseconds)
00999 {
01000 dbus_bool_t we_acquired;
01001
01002 HAVE_LOCK_CHECK (connection);
01003
01004
01005 _dbus_connection_ref_unlocked (connection);
01006
01007
01008 CONNECTION_UNLOCK (connection);
01009
01010 _dbus_verbose ("%s locking io_path_mutex\n", _DBUS_FUNCTION_NAME);
01011 _dbus_mutex_lock (connection->io_path_mutex);
01012
01013 _dbus_verbose ("%s start connection->io_path_acquired = %d timeout = %d\n",
01014 _DBUS_FUNCTION_NAME, connection->io_path_acquired, timeout_milliseconds);
01015
01016 we_acquired = FALSE;
01017
01018 if (connection->io_path_acquired)
01019 {
01020 if (timeout_milliseconds != -1)
01021 {
01022 _dbus_verbose ("%s waiting %d for IO path to be acquirable\n",
01023 _DBUS_FUNCTION_NAME, timeout_milliseconds);
01024
01025 if (!_dbus_condvar_wait_timeout (connection->io_path_cond,
01026 connection->io_path_mutex,
01027 timeout_milliseconds))
01028 {
01029
01030
01031
01032
01033
01034
01035
01036
01037 }
01038 }
01039 else
01040 {
01041 while (connection->io_path_acquired)
01042 {
01043 _dbus_verbose ("%s waiting for IO path to be acquirable\n", _DBUS_FUNCTION_NAME);
01044 _dbus_condvar_wait (connection->io_path_cond,
01045 connection->io_path_mutex);
01046 }
01047 }
01048 }
01049
01050 if (!connection->io_path_acquired)
01051 {
01052 we_acquired = TRUE;
01053 connection->io_path_acquired = TRUE;
01054 }
01055
01056 _dbus_verbose ("%s end connection->io_path_acquired = %d we_acquired = %d\n",
01057 _DBUS_FUNCTION_NAME, connection->io_path_acquired, we_acquired);
01058
01059 _dbus_verbose ("%s unlocking io_path_mutex\n", _DBUS_FUNCTION_NAME);
01060 _dbus_mutex_unlock (connection->io_path_mutex);
01061
01062 CONNECTION_LOCK (connection);
01063
01064 HAVE_LOCK_CHECK (connection);
01065
01066 _dbus_connection_unref_unlocked (connection);
01067
01068 return we_acquired;
01069 }
01070
01078 static void
01079 _dbus_connection_release_io_path (DBusConnection *connection)
01080 {
01081 HAVE_LOCK_CHECK (connection);
01082
01083 _dbus_verbose ("%s locking io_path_mutex\n", _DBUS_FUNCTION_NAME);
01084 _dbus_mutex_lock (connection->io_path_mutex);
01085
01086 _dbus_assert (connection->io_path_acquired);
01087
01088 _dbus_verbose ("%s start connection->io_path_acquired = %d\n",
01089 _DBUS_FUNCTION_NAME, connection->io_path_acquired);
01090
01091 connection->io_path_acquired = FALSE;
01092 _dbus_condvar_wake_one (connection->io_path_cond);
01093
01094 _dbus_verbose ("%s unlocking io_path_mutex\n", _DBUS_FUNCTION_NAME);
01095 _dbus_mutex_unlock (connection->io_path_mutex);
01096 }
01097
01126 void
01127 _dbus_connection_do_iteration_unlocked (DBusConnection *connection,
01128 unsigned int flags,
01129 int timeout_milliseconds)
01130 {
01131 _dbus_verbose ("%s start\n", _DBUS_FUNCTION_NAME);
01132
01133 HAVE_LOCK_CHECK (connection);
01134
01135 if (connection->n_outgoing == 0)
01136 flags &= ~DBUS_ITERATION_DO_WRITING;
01137
01138 if (_dbus_connection_acquire_io_path (connection,
01139 (flags & DBUS_ITERATION_BLOCK) ? timeout_milliseconds : 0))
01140 {
01141 HAVE_LOCK_CHECK (connection);
01142
01143 _dbus_transport_do_iteration (connection->transport,
01144 flags, timeout_milliseconds);
01145 _dbus_connection_release_io_path (connection);
01146 }
01147
01148 HAVE_LOCK_CHECK (connection);
01149
01150 _dbus_verbose ("%s end\n", _DBUS_FUNCTION_NAME);
01151 }
01152
01162 DBusConnection*
01163 _dbus_connection_new_for_transport (DBusTransport *transport)
01164 {
01165 DBusConnection *connection;
01166 DBusWatchList *watch_list;
01167 DBusTimeoutList *timeout_list;
01168 DBusHashTable *pending_replies;
01169 DBusList *disconnect_link;
01170 DBusMessage *disconnect_message;
01171 DBusCounter *outgoing_counter;
01172 DBusObjectTree *objects;
01173
01174 watch_list = NULL;
01175 connection = NULL;
01176 pending_replies = NULL;
01177 timeout_list = NULL;
01178 disconnect_link = NULL;
01179 disconnect_message = NULL;
01180 outgoing_counter = NULL;
01181 objects = NULL;
01182
01183 watch_list = _dbus_watch_list_new ();
01184 if (watch_list == NULL)
01185 goto error;
01186
01187 timeout_list = _dbus_timeout_list_new ();
01188 if (timeout_list == NULL)
01189 goto error;
01190
01191 pending_replies =
01192 _dbus_hash_table_new (DBUS_HASH_INT,
01193 NULL,
01194 (DBusFreeFunction)free_pending_call_on_hash_removal);
01195 if (pending_replies == NULL)
01196 goto error;
01197
01198 connection = dbus_new0 (DBusConnection, 1);
01199 if (connection == NULL)
01200 goto error;
01201
01202 _dbus_mutex_new_at_location (&connection->mutex);
01203 if (connection->mutex == NULL)
01204 goto error;
01205
01206 _dbus_mutex_new_at_location (&connection->io_path_mutex);
01207 if (connection->io_path_mutex == NULL)
01208 goto error;
01209
01210 _dbus_mutex_new_at_location (&connection->dispatch_mutex);
01211 if (connection->dispatch_mutex == NULL)
01212 goto error;
01213
01214 _dbus_condvar_new_at_location (&connection->dispatch_cond);
01215 if (connection->dispatch_cond == NULL)
01216 goto error;
01217
01218 _dbus_condvar_new_at_location (&connection->io_path_cond);
01219 if (connection->io_path_cond == NULL)
01220 goto error;
01221
01222 disconnect_message = dbus_message_new_signal (DBUS_PATH_LOCAL,
01223 DBUS_INTERFACE_LOCAL,
01224 "Disconnected");
01225
01226 if (disconnect_message == NULL)
01227 goto error;
01228
01229 disconnect_link = _dbus_list_alloc_link (disconnect_message);
01230 if (disconnect_link == NULL)
01231 goto error;
01232
01233 outgoing_counter = _dbus_counter_new ();
01234 if (outgoing_counter == NULL)
01235 goto error;
01236
01237 objects = _dbus_object_tree_new (connection);
01238 if (objects == NULL)
01239 goto error;
01240
01241 if (_dbus_modify_sigpipe)
01242 _dbus_disable_sigpipe ();
01243
01244 connection->refcount.value = 1;
01245 connection->transport = transport;
01246 connection->watches = watch_list;
01247 connection->timeouts = timeout_list;
01248 connection->pending_replies = pending_replies;
01249 connection->outgoing_counter = outgoing_counter;
01250 connection->filter_list = NULL;
01251 connection->last_dispatch_status = DBUS_DISPATCH_COMPLETE;
01252 connection->objects = objects;
01253 connection->exit_on_disconnect = FALSE;
01254 connection->shareable = FALSE;
01255 connection->route_peer_messages = FALSE;
01256 connection->disconnected_message_arrived = FALSE;
01257 connection->disconnected_message_processed = FALSE;
01258
01259 #ifndef DBUS_DISABLE_CHECKS
01260 connection->generation = _dbus_current_generation;
01261 #endif
01262
01263 _dbus_data_slot_list_init (&connection->slot_list);
01264
01265 connection->client_serial = 1;
01266
01267 connection->disconnect_message_link = disconnect_link;
01268
01269 CONNECTION_LOCK (connection);
01270
01271 if (!_dbus_transport_set_connection (transport, connection))
01272 {
01273 CONNECTION_UNLOCK (connection);
01274
01275 goto error;
01276 }
01277
01278 _dbus_transport_ref (transport);
01279
01280 CONNECTION_UNLOCK (connection);
01281
01282 return connection;
01283
01284 error:
01285 if (disconnect_message != NULL)
01286 dbus_message_unref (disconnect_message);
01287
01288 if (disconnect_link != NULL)
01289 _dbus_list_free_link (disconnect_link);
01290
01291 if (connection != NULL)
01292 {
01293 _dbus_condvar_free_at_location (&connection->io_path_cond);
01294 _dbus_condvar_free_at_location (&connection->dispatch_cond);
01295 _dbus_mutex_free_at_location (&connection->mutex);
01296 _dbus_mutex_free_at_location (&connection->io_path_mutex);
01297 _dbus_mutex_free_at_location (&connection->dispatch_mutex);
01298 dbus_free (connection);
01299 }
01300 if (pending_replies)
01301 _dbus_hash_table_unref (pending_replies);
01302
01303 if (watch_list)
01304 _dbus_watch_list_free (watch_list);
01305
01306 if (timeout_list)
01307 _dbus_timeout_list_free (timeout_list);
01308
01309 if (outgoing_counter)
01310 _dbus_counter_unref (outgoing_counter);
01311
01312 if (objects)
01313 _dbus_object_tree_unref (objects);
01314
01315 return NULL;
01316 }
01317
01325 DBusConnection *
01326 _dbus_connection_ref_unlocked (DBusConnection *connection)
01327 {
01328 _dbus_assert (connection != NULL);
01329 _dbus_assert (connection->generation == _dbus_current_generation);
01330
01331 HAVE_LOCK_CHECK (connection);
01332
01333 #ifdef DBUS_HAVE_ATOMIC_INT
01334 _dbus_atomic_inc (&connection->refcount);
01335 #else
01336 _dbus_assert (connection->refcount.value > 0);
01337 connection->refcount.value += 1;
01338 #endif
01339
01340 return connection;
01341 }
01342
01349 void
01350 _dbus_connection_unref_unlocked (DBusConnection *connection)
01351 {
01352 dbus_bool_t last_unref;
01353
01354 HAVE_LOCK_CHECK (connection);
01355
01356 _dbus_assert (connection != NULL);
01357
01358
01359
01360
01361
01362 #ifdef DBUS_HAVE_ATOMIC_INT
01363 last_unref = (_dbus_atomic_dec (&connection->refcount) == 1);
01364 #else
01365 _dbus_assert (connection->refcount.value > 0);
01366
01367 connection->refcount.value -= 1;
01368 last_unref = (connection->refcount.value == 0);
01369 #if 0
01370 printf ("unref_unlocked() connection %p count = %d\n", connection, connection->refcount.value);
01371 #endif
01372 #endif
01373
01374 if (last_unref)
01375 _dbus_connection_last_unref (connection);
01376 }
01377
01378 static dbus_uint32_t
01379 _dbus_connection_get_next_client_serial (DBusConnection *connection)
01380 {
01381 dbus_uint32_t serial;
01382
01383 serial = connection->client_serial++;
01384
01385 if (connection->client_serial == 0)
01386 connection->client_serial = 1;
01387
01388 return serial;
01389 }
01390
01404 dbus_bool_t
01405 _dbus_connection_handle_watch (DBusWatch *watch,
01406 unsigned int condition,
01407 void *data)
01408 {
01409 DBusConnection *connection;
01410 dbus_bool_t retval;
01411 DBusDispatchStatus status;
01412
01413 connection = data;
01414
01415 _dbus_verbose ("%s start\n", _DBUS_FUNCTION_NAME);
01416
01417 CONNECTION_LOCK (connection);
01418 _dbus_connection_acquire_io_path (connection, -1);
01419 HAVE_LOCK_CHECK (connection);
01420 retval = _dbus_transport_handle_watch (connection->transport,
01421 watch, condition);
01422
01423 _dbus_connection_release_io_path (connection);
01424
01425 HAVE_LOCK_CHECK (connection);
01426
01427 _dbus_verbose ("%s middle\n", _DBUS_FUNCTION_NAME);
01428
01429 status = _dbus_connection_get_dispatch_status_unlocked (connection);
01430
01431
01432 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
01433
01434 _dbus_verbose ("%s end\n", _DBUS_FUNCTION_NAME);
01435
01436 return retval;
01437 }
01438
01439 _DBUS_DEFINE_GLOBAL_LOCK (shared_connections);
01440 static DBusHashTable *shared_connections = NULL;
01441 static DBusList *shared_connections_no_guid = NULL;
01442
01443 static void
01444 close_connection_on_shutdown (DBusConnection *connection)
01445 {
01446 DBusMessage *message;
01447
01448 dbus_connection_ref (connection);
01449 _dbus_connection_close_possibly_shared (connection);
01450
01451
01452 while ((message = dbus_connection_pop_message (connection)))
01453 {
01454 dbus_message_unref (message);
01455 }
01456 dbus_connection_unref (connection);
01457 }
01458
01459 static void
01460 shared_connections_shutdown (void *data)
01461 {
01462 int n_entries;
01463
01464 _DBUS_LOCK (shared_connections);
01465
01466
01467 while ((n_entries = _dbus_hash_table_get_n_entries (shared_connections)) > 0)
01468 {
01469 DBusConnection *connection;
01470 DBusHashIter iter;
01471
01472 _dbus_hash_iter_init (shared_connections, &iter);
01473 _dbus_hash_iter_next (&iter);
01474
01475 connection = _dbus_hash_iter_get_value (&iter);
01476
01477 _DBUS_UNLOCK (shared_connections);
01478 close_connection_on_shutdown (connection);
01479 _DBUS_LOCK (shared_connections);
01480
01481
01482 _dbus_assert (_dbus_hash_table_get_n_entries (shared_connections) < n_entries);
01483 }
01484
01485 _dbus_assert (_dbus_hash_table_get_n_entries (shared_connections) == 0);
01486
01487 _dbus_hash_table_unref (shared_connections);
01488 shared_connections = NULL;
01489
01490 if (shared_connections_no_guid != NULL)
01491 {
01492 DBusConnection *connection;
01493 connection = _dbus_list_pop_first (&shared_connections_no_guid);
01494 while (connection != NULL)
01495 {
01496 _DBUS_UNLOCK (shared_connections);
01497 close_connection_on_shutdown (connection);
01498 _DBUS_LOCK (shared_connections);
01499 connection = _dbus_list_pop_first (&shared_connections_no_guid);
01500 }
01501 }
01502
01503 shared_connections_no_guid = NULL;
01504
01505 _DBUS_UNLOCK (shared_connections);
01506 }
01507
01508 static dbus_bool_t
01509 connection_lookup_shared (DBusAddressEntry *entry,
01510 DBusConnection **result)
01511 {
01512 _dbus_verbose ("checking for existing connection\n");
01513
01514 *result = NULL;
01515
01516 _DBUS_LOCK (shared_connections);
01517
01518 if (shared_connections == NULL)
01519 {
01520 _dbus_verbose ("creating shared_connections hash table\n");
01521
01522 shared_connections = _dbus_hash_table_new (DBUS_HASH_STRING,
01523 dbus_free,
01524 NULL);
01525 if (shared_connections == NULL)
01526 {
01527 _DBUS_UNLOCK (shared_connections);
01528 return FALSE;
01529 }
01530
01531 if (!_dbus_register_shutdown_func (shared_connections_shutdown, NULL))
01532 {
01533 _dbus_hash_table_unref (shared_connections);
01534 shared_connections = NULL;
01535 _DBUS_UNLOCK (shared_connections);
01536 return FALSE;
01537 }
01538
01539 _dbus_verbose (" successfully created shared_connections\n");
01540
01541 _DBUS_UNLOCK (shared_connections);
01542 return TRUE;
01543 }
01544 else
01545 {
01546 const char *guid;
01547
01548 guid = dbus_address_entry_get_value (entry, "guid");
01549
01550 if (guid != NULL)
01551 {
01552 DBusConnection *connection;
01553
01554 connection = _dbus_hash_table_lookup_string (shared_connections,
01555 guid);
01556
01557 if (connection)
01558 {
01559
01560
01561
01562
01563
01564
01565
01566
01567
01568
01569
01570
01571
01572
01573 CONNECTION_LOCK (connection);
01574 if (_dbus_connection_get_is_connected_unlocked (connection))
01575 {
01576 _dbus_connection_ref_unlocked (connection);
01577 *result = connection;
01578 _dbus_verbose ("looked up existing connection to server guid %s\n",
01579 guid);
01580 }
01581 else
01582 {
01583 _dbus_verbose ("looked up existing connection to server guid %s but it was disconnected so ignoring it\n",
01584 guid);
01585 }
01586 CONNECTION_UNLOCK (connection);
01587 }
01588 }
01589
01590 _DBUS_UNLOCK (shared_connections);
01591 return TRUE;
01592 }
01593 }
01594
01595 static dbus_bool_t
01596 connection_record_shared_unlocked (DBusConnection *connection,
01597 const char *guid)
01598 {
01599 char *guid_key;
01600 char *guid_in_connection;
01601
01602 HAVE_LOCK_CHECK (connection);
01603 _dbus_assert (connection->server_guid == NULL);
01604 _dbus_assert (connection->shareable);
01605
01606
01607
01608
01609
01610 _dbus_connection_ref_unlocked (connection);
01611
01612 if (guid == NULL)
01613 {
01614 _DBUS_LOCK (shared_connections);
01615
01616 if (!_dbus_list_prepend (&shared_connections_no_guid, connection))
01617 {
01618 _DBUS_UNLOCK (shared_connections);
01619 return FALSE;
01620 }
01621
01622 _DBUS_UNLOCK (shared_connections);
01623 return TRUE;
01624 }
01625
01626
01627
01628
01629
01630
01631 guid_key = _dbus_strdup (guid);
01632 if (guid_key == NULL)
01633 return FALSE;
01634
01635 guid_in_connection = _dbus_strdup (guid);
01636 if (guid_in_connection == NULL)
01637 {
01638 dbus_free (guid_key);
01639 return FALSE;
01640 }
01641
01642 _DBUS_LOCK (shared_connections);
01643 _dbus_assert (shared_connections != NULL);
01644
01645 if (!_dbus_hash_table_insert_string (shared_connections,
01646 guid_key, connection))
01647 {
01648 dbus_free (guid_key);
01649 dbus_free (guid_in_connection);
01650 _DBUS_UNLOCK (shared_connections);
01651 return FALSE;
01652 }
01653
01654 connection->server_guid = guid_in_connection;
01655
01656 _dbus_verbose ("stored connection to %s to be shared\n",
01657 connection->server_guid);
01658
01659 _DBUS_UNLOCK (shared_connections);
01660
01661 _dbus_assert (connection->server_guid != NULL);
01662
01663 return TRUE;
01664 }
01665
01666 static void
01667 connection_forget_shared_unlocked (DBusConnection *connection)
01668 {
01669 HAVE_LOCK_CHECK (connection);
01670
01671 if (!connection->shareable)
01672 return;
01673
01674 if (connection->server_guid != NULL)
01675 {
01676 _dbus_verbose ("dropping connection to %s out of the shared table\n",
01677 connection->server_guid);
01678
01679 _DBUS_LOCK (shared_connections);
01680
01681 if (!_dbus_hash_table_remove_string (shared_connections,
01682 connection->server_guid))
01683 _dbus_assert_not_reached ("connection was not in the shared table");
01684
01685 dbus_free (connection->server_guid);
01686 connection->server_guid = NULL;
01687 _DBUS_UNLOCK (shared_connections);
01688 }
01689
01690
01691 _dbus_connection_unref_unlocked (connection);
01692 }
01693
01694 static DBusConnection*
01695 connection_try_from_address_entry (DBusAddressEntry *entry,
01696 DBusError *error)
01697 {
01698 DBusTransport *transport;
01699 DBusConnection *connection;
01700
01701 transport = _dbus_transport_open (entry, error);
01702
01703 if (transport == NULL)
01704 {
01705 _DBUS_ASSERT_ERROR_IS_SET (error);
01706 return NULL;
01707 }
01708
01709 connection = _dbus_connection_new_for_transport (transport);
01710
01711 _dbus_transport_unref (transport);
01712
01713 if (connection == NULL)
01714 {
01715 _DBUS_SET_OOM (error);
01716 return NULL;
01717 }
01718
01719 #ifndef DBUS_DISABLE_CHECKS
01720 _dbus_assert (!connection->have_connection_lock);
01721 #endif
01722 return connection;
01723 }
01724
01725
01726
01727
01728
01729
01730
01731
01732
01733
01734
01735
01736
01737 static DBusConnection*
01738 _dbus_connection_open_internal (const char *address,
01739 dbus_bool_t shared,
01740 DBusError *error)
01741 {
01742 DBusConnection *connection;
01743 DBusAddressEntry **entries;
01744 DBusError tmp_error = DBUS_ERROR_INIT;
01745 DBusError first_error = DBUS_ERROR_INIT;
01746 int len, i;
01747
01748 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
01749
01750 _dbus_verbose ("opening %s connection to: %s\n",
01751 shared ? "shared" : "private", address);
01752
01753 if (!dbus_parse_address (address, &entries, &len, error))
01754 return NULL;
01755
01756 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
01757
01758 connection = NULL;
01759
01760 for (i = 0; i < len; i++)
01761 {
01762 if (shared)
01763 {
01764 if (!connection_lookup_shared (entries[i], &connection))
01765 _DBUS_SET_OOM (&tmp_error);
01766 }
01767
01768 if (connection == NULL)
01769 {
01770 connection = connection_try_from_address_entry (entries[i],
01771 &tmp_error);
01772
01773 if (connection != NULL && shared)
01774 {
01775 const char *guid;
01776
01777 connection->shareable = TRUE;
01778
01779
01780 guid = dbus_address_entry_get_value (entries[i], "guid");
01781
01782 CONNECTION_LOCK (connection);
01783
01784 if (!connection_record_shared_unlocked (connection, guid))
01785 {
01786 _DBUS_SET_OOM (&tmp_error);
01787 _dbus_connection_close_possibly_shared_and_unlock (connection);
01788 dbus_connection_unref (connection);
01789 connection = NULL;
01790 }
01791 else
01792 CONNECTION_UNLOCK (connection);
01793 }
01794 }
01795
01796 if (connection)
01797 break;
01798
01799 _DBUS_ASSERT_ERROR_IS_SET (&tmp_error);
01800
01801 if (i == 0)
01802 dbus_move_error (&tmp_error, &first_error);
01803 else
01804 dbus_error_free (&tmp_error);
01805 }
01806
01807 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
01808 _DBUS_ASSERT_ERROR_IS_CLEAR (&tmp_error);
01809
01810 if (connection == NULL)
01811 {
01812 _DBUS_ASSERT_ERROR_IS_SET (&first_error);
01813 dbus_move_error (&first_error, error);
01814 }
01815 else
01816 dbus_error_free (&first_error);
01817
01818 dbus_address_entries_free (entries);
01819 return connection;
01820 }
01821
01830 void
01831 _dbus_connection_close_possibly_shared (DBusConnection *connection)
01832 {
01833 _dbus_assert (connection != NULL);
01834 _dbus_assert (connection->generation == _dbus_current_generation);
01835
01836 CONNECTION_LOCK (connection);
01837 _dbus_connection_close_possibly_shared_and_unlock (connection);
01838 }
01839
01840 static DBusPreallocatedSend*
01841 _dbus_connection_preallocate_send_unlocked (DBusConnection *connection)
01842 {
01843 DBusPreallocatedSend *preallocated;
01844
01845 HAVE_LOCK_CHECK (connection);
01846
01847 _dbus_assert (connection != NULL);
01848
01849 preallocated = dbus_new (DBusPreallocatedSend, 1);
01850 if (preallocated == NULL)
01851 return NULL;
01852
01853 if (connection->link_cache != NULL)
01854 {
01855 preallocated->queue_link =
01856 _dbus_list_pop_first_link (&connection->link_cache);
01857 preallocated->queue_link->data = NULL;
01858 }
01859 else
01860 {
01861 preallocated->queue_link = _dbus_list_alloc_link (NULL);
01862 if (preallocated->queue_link == NULL)
01863 goto failed_0;
01864 }
01865
01866 if (connection->link_cache != NULL)
01867 {
01868 preallocated->counter_link =
01869 _dbus_list_pop_first_link (&connection->link_cache);
01870 preallocated->counter_link->data = connection->outgoing_counter;
01871 }
01872 else
01873 {
01874 preallocated->counter_link = _dbus_list_alloc_link (connection->outgoing_counter);
01875 if (preallocated->counter_link == NULL)
01876 goto failed_1;
01877 }
01878
01879 _dbus_counter_ref (preallocated->counter_link->data);
01880
01881 preallocated->connection = connection;
01882
01883 return preallocated;
01884
01885 failed_1:
01886 _dbus_list_free_link (preallocated->queue_link);
01887 failed_0:
01888 dbus_free (preallocated);
01889
01890 return NULL;
01891 }
01892
01893
01894 static void
01895 _dbus_connection_send_preallocated_unlocked_no_update (DBusConnection *connection,
01896 DBusPreallocatedSend *preallocated,
01897 DBusMessage *message,
01898 dbus_uint32_t *client_serial)
01899 {
01900 dbus_uint32_t serial;
01901 const char *sig;
01902
01903 preallocated->queue_link->data = message;
01904 _dbus_list_prepend_link (&connection->outgoing_messages,
01905 preallocated->queue_link);
01906
01907 _dbus_message_add_size_counter_link (message,
01908 preallocated->counter_link);
01909
01910 dbus_free (preallocated);
01911 preallocated = NULL;
01912
01913 dbus_message_ref (message);
01914
01915 connection->n_outgoing += 1;
01916
01917 sig = dbus_message_get_signature (message);
01918
01919 _dbus_verbose ("Message %p (%d %s %s %s '%s') for %s added to outgoing queue %p, %d pending to send\n",
01920 message,
01921 dbus_message_get_type (message),
01922 dbus_message_get_path (message) ?
01923 dbus_message_get_path (message) :
01924 "no path",
01925 dbus_message_get_interface (message) ?
01926 dbus_message_get_interface (message) :
01927 "no interface",
01928 dbus_message_get_member (message) ?
01929 dbus_message_get_member (message) :
01930 "no member",
01931 sig,
01932 dbus_message_get_destination (message) ?
01933 dbus_message_get_destination (message) :
01934 "null",
01935 connection,
01936 connection->n_outgoing);
01937
01938 if (dbus_message_get_serial (message) == 0)
01939 {
01940 serial = _dbus_connection_get_next_client_serial (connection);
01941 _dbus_message_set_serial (message, serial);
01942 if (client_serial)
01943 *client_serial = serial;
01944 }
01945 else
01946 {
01947 if (client_serial)
01948 *client_serial = dbus_message_get_serial (message);
01949 }
01950
01951 _dbus_verbose ("Message %p serial is %u\n",
01952 message, dbus_message_get_serial (message));
01953
01954 _dbus_message_lock (message);
01955
01956
01957
01958
01959 _dbus_connection_do_iteration_unlocked (connection,
01960 DBUS_ITERATION_DO_WRITING,
01961 -1);
01962
01963
01964 if (connection->n_outgoing > 0)
01965 _dbus_connection_wakeup_mainloop (connection);
01966 }
01967
01968 static void
01969 _dbus_connection_send_preallocated_and_unlock (DBusConnection *connection,
01970 DBusPreallocatedSend *preallocated,
01971 DBusMessage *message,
01972 dbus_uint32_t *client_serial)
01973 {
01974 DBusDispatchStatus status;
01975
01976 HAVE_LOCK_CHECK (connection);
01977
01978 _dbus_connection_send_preallocated_unlocked_no_update (connection,
01979 preallocated,
01980 message, client_serial);
01981
01982 _dbus_verbose ("%s middle\n", _DBUS_FUNCTION_NAME);
01983 status = _dbus_connection_get_dispatch_status_unlocked (connection);
01984
01985
01986 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
01987 }
01988
01998 dbus_bool_t
01999 _dbus_connection_send_and_unlock (DBusConnection *connection,
02000 DBusMessage *message,
02001 dbus_uint32_t *client_serial)
02002 {
02003 DBusPreallocatedSend *preallocated;
02004
02005 _dbus_assert (connection != NULL);
02006 _dbus_assert (message != NULL);
02007
02008 preallocated = _dbus_connection_preallocate_send_unlocked (connection);
02009 if (preallocated == NULL)
02010 {
02011 CONNECTION_UNLOCK (connection);
02012 return FALSE;
02013 }
02014
02015 _dbus_connection_send_preallocated_and_unlock (connection,
02016 preallocated,
02017 message,
02018 client_serial);
02019 return TRUE;
02020 }
02021
02046 void
02047 _dbus_connection_close_if_only_one_ref (DBusConnection *connection)
02048 {
02049 CONNECTION_LOCK (connection);
02050
02051 _dbus_assert (connection->refcount.value > 0);
02052
02053 if (connection->refcount.value == 1)
02054 _dbus_connection_close_possibly_shared_and_unlock (connection);
02055 else
02056 CONNECTION_UNLOCK (connection);
02057 }
02058
02059
02069 static void
02070 _dbus_memory_pause_based_on_timeout (int timeout_milliseconds)
02071 {
02072 if (timeout_milliseconds == -1)
02073 _dbus_sleep_milliseconds (1000);
02074 else if (timeout_milliseconds < 100)
02075 ;
02076 else if (timeout_milliseconds <= 1000)
02077 _dbus_sleep_milliseconds (timeout_milliseconds / 3);
02078 else
02079 _dbus_sleep_milliseconds (1000);
02080 }
02081
02082 static DBusMessage *
02083 generate_local_error_message (dbus_uint32_t serial,
02084 char *error_name,
02085 char *error_msg)
02086 {
02087 DBusMessage *message;
02088 message = dbus_message_new (DBUS_MESSAGE_TYPE_ERROR);
02089 if (!message)
02090 goto out;
02091
02092 if (!dbus_message_set_error_name (message, error_name))
02093 {
02094 dbus_message_unref (message);
02095 message = NULL;
02096 goto out;
02097 }
02098
02099 dbus_message_set_no_reply (message, TRUE);
02100
02101 if (!dbus_message_set_reply_serial (message,
02102 serial))
02103 {
02104 dbus_message_unref (message);
02105 message = NULL;
02106 goto out;
02107 }
02108
02109 if (error_msg != NULL)
02110 {
02111 DBusMessageIter iter;
02112
02113 dbus_message_iter_init_append (message, &iter);
02114 if (!dbus_message_iter_append_basic (&iter,
02115 DBUS_TYPE_STRING,
02116 &error_msg))
02117 {
02118 dbus_message_unref (message);
02119 message = NULL;
02120 goto out;
02121 }
02122 }
02123
02124 out:
02125 return message;
02126 }
02127
02128
02129
02130
02131
02132 static DBusMessage*
02133 check_for_reply_unlocked (DBusConnection *connection,
02134 dbus_uint32_t client_serial)
02135 {
02136 DBusList *link;
02137
02138 HAVE_LOCK_CHECK (connection);
02139
02140 link = _dbus_list_get_first_link (&connection->incoming_messages);
02141
02142 while (link != NULL)
02143 {
02144 DBusMessage *reply = link->data;
02145
02146 if (dbus_message_get_reply_serial (reply) == client_serial)
02147 {
02148 _dbus_list_remove_link (&connection->incoming_messages, link);
02149 connection->n_incoming -= 1;
02150 return reply;
02151 }
02152 link = _dbus_list_get_next_link (&connection->incoming_messages, link);
02153 }
02154
02155 return NULL;
02156 }
02157
02158 static void
02159 connection_timeout_and_complete_all_pending_calls_unlocked (DBusConnection *connection)
02160 {
02161
02162
02163
02164
02165
02166 while (_dbus_hash_table_get_n_entries (connection->pending_replies) > 0)
02167 {
02168 DBusPendingCall *pending;
02169 DBusHashIter iter;
02170
02171 _dbus_hash_iter_init (connection->pending_replies, &iter);
02172 _dbus_hash_iter_next (&iter);
02173
02174 pending = _dbus_hash_iter_get_value (&iter);
02175 _dbus_pending_call_ref_unlocked (pending);
02176
02177 _dbus_pending_call_queue_timeout_error_unlocked (pending,
02178 connection);
02179 _dbus_connection_remove_timeout_unlocked (connection,
02180 _dbus_pending_call_get_timeout_unlocked (pending));
02181 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
02182 _dbus_hash_iter_remove_entry (&iter);
02183
02184 _dbus_pending_call_unref_and_unlock (pending);
02185 CONNECTION_LOCK (connection);
02186 }
02187 HAVE_LOCK_CHECK (connection);
02188 }
02189
02190 static void
02191 complete_pending_call_and_unlock (DBusConnection *connection,
02192 DBusPendingCall *pending,
02193 DBusMessage *message)
02194 {
02195 _dbus_pending_call_set_reply_unlocked (pending, message);
02196 _dbus_pending_call_ref_unlocked (pending);
02197 _dbus_connection_detach_pending_call_and_unlock (connection, pending);
02198
02199
02200 _dbus_pending_call_complete (pending);
02201 dbus_pending_call_unref (pending);
02202 }
02203
02204 static dbus_bool_t
02205 check_for_reply_and_update_dispatch_unlocked (DBusConnection *connection,
02206 DBusPendingCall *pending)
02207 {
02208 DBusMessage *reply;
02209 DBusDispatchStatus status;
02210
02211 reply = check_for_reply_unlocked (connection,
02212 _dbus_pending_call_get_reply_serial_unlocked (pending));
02213 if (reply != NULL)
02214 {
02215 _dbus_verbose ("%s checked for reply\n", _DBUS_FUNCTION_NAME);
02216
02217 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): got reply\n");
02218
02219 complete_pending_call_and_unlock (connection, pending, reply);
02220 dbus_message_unref (reply);
02221
02222 CONNECTION_LOCK (connection);
02223 status = _dbus_connection_get_dispatch_status_unlocked (connection);
02224 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
02225 dbus_pending_call_unref (pending);
02226
02227 return TRUE;
02228 }
02229
02230 return FALSE;
02231 }
02232
02247 void
02248 _dbus_connection_block_pending_call (DBusPendingCall *pending)
02249 {
02250 long start_tv_sec, start_tv_usec;
02251 long end_tv_sec, end_tv_usec;
02252 long tv_sec, tv_usec;
02253 DBusDispatchStatus status;
02254 DBusConnection *connection;
02255 dbus_uint32_t client_serial;
02256 int timeout_milliseconds;
02257
02258 _dbus_assert (pending != NULL);
02259
02260 if (dbus_pending_call_get_completed (pending))
02261 return;
02262
02263 dbus_pending_call_ref (pending);
02264
02265 connection = _dbus_pending_call_get_connection_and_lock (pending);
02266
02267
02268 _dbus_connection_flush_unlocked (connection);
02269
02270 client_serial = _dbus_pending_call_get_reply_serial_unlocked (pending);
02271
02272
02273
02274
02275
02276 timeout_milliseconds = dbus_timeout_get_interval (_dbus_pending_call_get_timeout_unlocked (pending));
02277
02278 _dbus_get_current_time (&start_tv_sec, &start_tv_usec);
02279 end_tv_sec = start_tv_sec + timeout_milliseconds / 1000;
02280 end_tv_usec = start_tv_usec + (timeout_milliseconds % 1000) * 1000;
02281 end_tv_sec += end_tv_usec / _DBUS_USEC_PER_SECOND;
02282 end_tv_usec = end_tv_usec % _DBUS_USEC_PER_SECOND;
02283
02284 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): will block %d milliseconds for reply serial %u from %ld sec %ld usec to %ld sec %ld usec\n",
02285 timeout_milliseconds,
02286 client_serial,
02287 start_tv_sec, start_tv_usec,
02288 end_tv_sec, end_tv_usec);
02289
02290
02291
02292 if (check_for_reply_and_update_dispatch_unlocked (connection, pending))
02293 return;
02294
02295
02296
02297 _dbus_connection_do_iteration_unlocked (connection,
02298 DBUS_ITERATION_DO_READING |
02299 DBUS_ITERATION_BLOCK,
02300 timeout_milliseconds);
02301
02302 recheck_status:
02303
02304 _dbus_verbose ("%s top of recheck\n", _DBUS_FUNCTION_NAME);
02305
02306 HAVE_LOCK_CHECK (connection);
02307
02308
02309
02310 status = _dbus_connection_get_dispatch_status_unlocked (connection);
02311
02312
02313
02314
02315 if (_dbus_pending_call_get_completed_unlocked (pending))
02316 {
02317 _dbus_verbose ("Pending call completed by dispatch in %s\n", _DBUS_FUNCTION_NAME);
02318 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
02319 dbus_pending_call_unref (pending);
02320 return;
02321 }
02322
02323 if (status == DBUS_DISPATCH_DATA_REMAINS)
02324 {
02325 if (check_for_reply_and_update_dispatch_unlocked (connection, pending))
02326 return;
02327 }
02328
02329 _dbus_get_current_time (&tv_sec, &tv_usec);
02330
02331 if (!_dbus_connection_get_is_connected_unlocked (connection))
02332 {
02333 DBusMessage *error_msg;
02334
02335 error_msg = generate_local_error_message (client_serial,
02336 DBUS_ERROR_DISCONNECTED,
02337 "Connection was disconnected before a reply was received");
02338
02339
02340 complete_pending_call_and_unlock (connection, pending, error_msg);
02341 dbus_pending_call_unref (pending);
02342 return;
02343 }
02344 else if (tv_sec < start_tv_sec)
02345 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): clock set backward\n");
02346 else if (connection->disconnect_message_link == NULL)
02347 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): disconnected\n");
02348 else if (tv_sec < end_tv_sec ||
02349 (tv_sec == end_tv_sec && tv_usec < end_tv_usec))
02350 {
02351 timeout_milliseconds = (end_tv_sec - tv_sec) * 1000 +
02352 (end_tv_usec - tv_usec) / 1000;
02353 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): %d milliseconds remain\n", timeout_milliseconds);
02354 _dbus_assert (timeout_milliseconds >= 0);
02355
02356 if (status == DBUS_DISPATCH_NEED_MEMORY)
02357 {
02358
02359
02360
02361
02362 _dbus_verbose ("dbus_connection_send_with_reply_and_block() waiting for more memory\n");
02363
02364 _dbus_memory_pause_based_on_timeout (timeout_milliseconds);
02365 }
02366 else
02367 {
02368
02369 _dbus_connection_do_iteration_unlocked (connection,
02370 DBUS_ITERATION_DO_READING |
02371 DBUS_ITERATION_BLOCK,
02372 timeout_milliseconds);
02373 }
02374
02375 goto recheck_status;
02376 }
02377
02378 _dbus_verbose ("dbus_connection_send_with_reply_and_block(): Waited %ld milliseconds and got no reply\n",
02379 (tv_sec - start_tv_sec) * 1000 + (tv_usec - start_tv_usec) / 1000);
02380
02381 _dbus_assert (!_dbus_pending_call_get_completed_unlocked (pending));
02382
02383
02384 complete_pending_call_and_unlock (connection, pending, NULL);
02385
02386
02387 CONNECTION_LOCK (connection);
02388 status = _dbus_connection_get_dispatch_status_unlocked (connection);
02389 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
02390 dbus_pending_call_unref (pending);
02391 }
02392
02429 DBusConnection*
02430 dbus_connection_open (const char *address,
02431 DBusError *error)
02432 {
02433 DBusConnection *connection;
02434
02435 _dbus_return_val_if_fail (address != NULL, NULL);
02436 _dbus_return_val_if_error_is_set (error, NULL);
02437
02438 connection = _dbus_connection_open_internal (address,
02439 TRUE,
02440 error);
02441
02442 return connection;
02443 }
02444
02472 DBusConnection*
02473 dbus_connection_open_private (const char *address,
02474 DBusError *error)
02475 {
02476 DBusConnection *connection;
02477
02478 _dbus_return_val_if_fail (address != NULL, NULL);
02479 _dbus_return_val_if_error_is_set (error, NULL);
02480
02481 connection = _dbus_connection_open_internal (address,
02482 FALSE,
02483 error);
02484
02485 return connection;
02486 }
02487
02494 DBusConnection *
02495 dbus_connection_ref (DBusConnection *connection)
02496 {
02497 _dbus_return_val_if_fail (connection != NULL, NULL);
02498 _dbus_return_val_if_fail (connection->generation == _dbus_current_generation, NULL);
02499
02500
02501
02502
02503
02504 #ifdef DBUS_HAVE_ATOMIC_INT
02505 _dbus_atomic_inc (&connection->refcount);
02506 #else
02507 CONNECTION_LOCK (connection);
02508 _dbus_assert (connection->refcount.value > 0);
02509
02510 connection->refcount.value += 1;
02511 CONNECTION_UNLOCK (connection);
02512 #endif
02513
02514 return connection;
02515 }
02516
02517 static void
02518 free_outgoing_message (void *element,
02519 void *data)
02520 {
02521 DBusMessage *message = element;
02522 DBusConnection *connection = data;
02523
02524 _dbus_message_remove_size_counter (message,
02525 connection->outgoing_counter,
02526 NULL);
02527 dbus_message_unref (message);
02528 }
02529
02530
02531
02532
02533
02534 static void
02535 _dbus_connection_last_unref (DBusConnection *connection)
02536 {
02537 DBusList *link;
02538
02539 _dbus_verbose ("Finalizing connection %p\n", connection);
02540
02541 _dbus_assert (connection->refcount.value == 0);
02542
02543
02544
02545
02546 _dbus_assert (!_dbus_transport_get_is_connected (connection->transport));
02547 _dbus_assert (connection->server_guid == NULL);
02548
02549
02550 _dbus_object_tree_free_all_unlocked (connection->objects);
02551
02552 dbus_connection_set_dispatch_status_function (connection, NULL, NULL, NULL);
02553 dbus_connection_set_wakeup_main_function (connection, NULL, NULL, NULL);
02554 dbus_connection_set_unix_user_function (connection, NULL, NULL, NULL);
02555
02556 _dbus_watch_list_free (connection->watches);
02557 connection->watches = NULL;
02558
02559 _dbus_timeout_list_free (connection->timeouts);
02560 connection->timeouts = NULL;
02561
02562 _dbus_data_slot_list_free (&connection->slot_list);
02563
02564 link = _dbus_list_get_first_link (&connection->filter_list);
02565 while (link != NULL)
02566 {
02567 DBusMessageFilter *filter = link->data;
02568 DBusList *next = _dbus_list_get_next_link (&connection->filter_list, link);
02569
02570 filter->function = NULL;
02571 _dbus_message_filter_unref (filter);
02572 link->data = NULL;
02573
02574 link = next;
02575 }
02576 _dbus_list_clear (&connection->filter_list);
02577
02578
02579
02580 _dbus_object_tree_unref (connection->objects);
02581
02582 _dbus_hash_table_unref (connection->pending_replies);
02583 connection->pending_replies = NULL;
02584
02585 _dbus_list_clear (&connection->filter_list);
02586
02587 _dbus_list_foreach (&connection->outgoing_messages,
02588 free_outgoing_message,
02589 connection);
02590 _dbus_list_clear (&connection->outgoing_messages);
02591
02592 _dbus_list_foreach (&connection->incoming_messages,
02593 (DBusForeachFunction) dbus_message_unref,
02594 NULL);
02595 _dbus_list_clear (&connection->incoming_messages);
02596
02597 _dbus_counter_unref (connection->outgoing_counter);
02598
02599 _dbus_transport_unref (connection->transport);
02600
02601 if (connection->disconnect_message_link)
02602 {
02603 DBusMessage *message = connection->disconnect_message_link->data;
02604 dbus_message_unref (message);
02605 _dbus_list_free_link (connection->disconnect_message_link);
02606 }
02607
02608 _dbus_list_clear (&connection->link_cache);
02609
02610 _dbus_condvar_free_at_location (&connection->dispatch_cond);
02611 _dbus_condvar_free_at_location (&connection->io_path_cond);
02612
02613 _dbus_mutex_free_at_location (&connection->io_path_mutex);
02614 _dbus_mutex_free_at_location (&connection->dispatch_mutex);
02615
02616 _dbus_mutex_free_at_location (&connection->mutex);
02617
02618 dbus_free (connection);
02619 }
02620
02640 void
02641 dbus_connection_unref (DBusConnection *connection)
02642 {
02643 dbus_bool_t last_unref;
02644
02645 _dbus_return_if_fail (connection != NULL);
02646 _dbus_return_if_fail (connection->generation == _dbus_current_generation);
02647
02648
02649
02650
02651
02652 #ifdef DBUS_HAVE_ATOMIC_INT
02653 last_unref = (_dbus_atomic_dec (&connection->refcount) == 1);
02654 #else
02655 CONNECTION_LOCK (connection);
02656
02657 _dbus_assert (connection->refcount.value > 0);
02658
02659 connection->refcount.value -= 1;
02660 last_unref = (connection->refcount.value == 0);
02661
02662 #if 0
02663 printf ("unref() connection %p count = %d\n", connection, connection->refcount.value);
02664 #endif
02665
02666 CONNECTION_UNLOCK (connection);
02667 #endif
02668
02669 if (last_unref)
02670 {
02671 #ifndef DBUS_DISABLE_CHECKS
02672 if (_dbus_transport_get_is_connected (connection->transport))
02673 {
02674 _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",
02675 connection->shareable ?
02676 "Most likely, the application called unref() too many times and removed a reference belonging to libdbus, since this is a shared connection.\n" :
02677 "Most likely, the application was supposed to call dbus_connection_close(), since this is a private connection.\n");
02678 return;
02679 }
02680 #endif
02681 _dbus_connection_last_unref (connection);
02682 }
02683 }
02684
02685
02686
02687
02688
02689
02690
02691
02692
02693
02694 static void
02695 _dbus_connection_close_possibly_shared_and_unlock (DBusConnection *connection)
02696 {
02697 DBusDispatchStatus status;
02698
02699 HAVE_LOCK_CHECK (connection);
02700
02701 _dbus_verbose ("Disconnecting %p\n", connection);
02702
02703
02704
02705
02706
02707 _dbus_connection_ref_unlocked (connection);
02708
02709 _dbus_transport_disconnect (connection->transport);
02710
02711
02712
02713
02714
02715
02716
02717
02718
02719
02720 status = _dbus_connection_get_dispatch_status_unlocked (connection);
02721
02722
02723 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
02724
02725
02726 dbus_connection_unref (connection);
02727 }
02728
02771 void
02772 dbus_connection_close (DBusConnection *connection)
02773 {
02774 _dbus_return_if_fail (connection != NULL);
02775 _dbus_return_if_fail (connection->generation == _dbus_current_generation);
02776
02777 CONNECTION_LOCK (connection);
02778
02779 #ifndef DBUS_DISABLE_CHECKS
02780 if (connection->shareable)
02781 {
02782 CONNECTION_UNLOCK (connection);
02783
02784 _dbus_warn_check_failed ("Applications must not close shared connections - see dbus_connection_close() docs. This is a bug in the application.\n");
02785 return;
02786 }
02787 #endif
02788
02789 _dbus_connection_close_possibly_shared_and_unlock (connection);
02790 }
02791
02792 static dbus_bool_t
02793 _dbus_connection_get_is_connected_unlocked (DBusConnection *connection)
02794 {
02795 HAVE_LOCK_CHECK (connection);
02796 return _dbus_transport_get_is_connected (connection->transport);
02797 }
02798
02812 dbus_bool_t
02813 dbus_connection_get_is_connected (DBusConnection *connection)
02814 {
02815 dbus_bool_t res;
02816
02817 _dbus_return_val_if_fail (connection != NULL, FALSE);
02818
02819 CONNECTION_LOCK (connection);
02820 res = _dbus_connection_get_is_connected_unlocked (connection);
02821 CONNECTION_UNLOCK (connection);
02822
02823 return res;
02824 }
02825
02834 dbus_bool_t
02835 dbus_connection_get_is_authenticated (DBusConnection *connection)
02836 {
02837 dbus_bool_t res;
02838
02839 _dbus_return_val_if_fail (connection != NULL, FALSE);
02840
02841 CONNECTION_LOCK (connection);
02842 res = _dbus_transport_get_is_authenticated (connection->transport);
02843 CONNECTION_UNLOCK (connection);
02844
02845 return res;
02846 }
02847
02868 dbus_bool_t
02869 dbus_connection_get_is_anonymous (DBusConnection *connection)
02870 {
02871 dbus_bool_t res;
02872
02873 _dbus_return_val_if_fail (connection != NULL, FALSE);
02874
02875 CONNECTION_LOCK (connection);
02876 res = _dbus_transport_get_is_anonymous (connection->transport);
02877 CONNECTION_UNLOCK (connection);
02878
02879 return res;
02880 }
02881
02913 char*
02914 dbus_connection_get_server_id (DBusConnection *connection)
02915 {
02916 char *id;
02917
02918 _dbus_return_val_if_fail (connection != NULL, FALSE);
02919
02920 CONNECTION_LOCK (connection);
02921 id = _dbus_strdup (_dbus_transport_get_server_id (connection->transport));
02922 CONNECTION_UNLOCK (connection);
02923
02924 return id;
02925 }
02926
02940 void
02941 dbus_connection_set_exit_on_disconnect (DBusConnection *connection,
02942 dbus_bool_t exit_on_disconnect)
02943 {
02944 _dbus_return_if_fail (connection != NULL);
02945
02946 CONNECTION_LOCK (connection);
02947 connection->exit_on_disconnect = exit_on_disconnect != FALSE;
02948 CONNECTION_UNLOCK (connection);
02949 }
02950
02960 DBusPreallocatedSend*
02961 dbus_connection_preallocate_send (DBusConnection *connection)
02962 {
02963 DBusPreallocatedSend *preallocated;
02964
02965 _dbus_return_val_if_fail (connection != NULL, NULL);
02966
02967 CONNECTION_LOCK (connection);
02968
02969 preallocated =
02970 _dbus_connection_preallocate_send_unlocked (connection);
02971
02972 CONNECTION_UNLOCK (connection);
02973
02974 return preallocated;
02975 }
02976
02986 void
02987 dbus_connection_free_preallocated_send (DBusConnection *connection,
02988 DBusPreallocatedSend *preallocated)
02989 {
02990 _dbus_return_if_fail (connection != NULL);
02991 _dbus_return_if_fail (preallocated != NULL);
02992 _dbus_return_if_fail (connection == preallocated->connection);
02993
02994 _dbus_list_free_link (preallocated->queue_link);
02995 _dbus_counter_unref (preallocated->counter_link->data);
02996 _dbus_list_free_link (preallocated->counter_link);
02997 dbus_free (preallocated);
02998 }
02999
03012 void
03013 dbus_connection_send_preallocated (DBusConnection *connection,
03014 DBusPreallocatedSend *preallocated,
03015 DBusMessage *message,
03016 dbus_uint32_t *client_serial)
03017 {
03018 _dbus_return_if_fail (connection != NULL);
03019 _dbus_return_if_fail (preallocated != NULL);
03020 _dbus_return_if_fail (message != NULL);
03021 _dbus_return_if_fail (preallocated->connection == connection);
03022 _dbus_return_if_fail (dbus_message_get_type (message) != DBUS_MESSAGE_TYPE_METHOD_CALL ||
03023 dbus_message_get_member (message) != NULL);
03024 _dbus_return_if_fail (dbus_message_get_type (message) != DBUS_MESSAGE_TYPE_SIGNAL ||
03025 (dbus_message_get_interface (message) != NULL &&
03026 dbus_message_get_member (message) != NULL));
03027
03028 CONNECTION_LOCK (connection);
03029 _dbus_connection_send_preallocated_and_unlock (connection,
03030 preallocated,
03031 message, client_serial);
03032 }
03033
03034 static dbus_bool_t
03035 _dbus_connection_send_unlocked_no_update (DBusConnection *connection,
03036 DBusMessage *message,
03037 dbus_uint32_t *client_serial)
03038 {
03039 DBusPreallocatedSend *preallocated;
03040
03041 _dbus_assert (connection != NULL);
03042 _dbus_assert (message != NULL);
03043
03044 preallocated = _dbus_connection_preallocate_send_unlocked (connection);
03045 if (preallocated == NULL)
03046 return FALSE;
03047
03048 _dbus_connection_send_preallocated_unlocked_no_update (connection,
03049 preallocated,
03050 message,
03051 client_serial);
03052 return TRUE;
03053 }
03054
03076 dbus_bool_t
03077 dbus_connection_send (DBusConnection *connection,
03078 DBusMessage *message,
03079 dbus_uint32_t *serial)
03080 {
03081 _dbus_return_val_if_fail (connection != NULL, FALSE);
03082 _dbus_return_val_if_fail (message != NULL, FALSE);
03083
03084 CONNECTION_LOCK (connection);
03085
03086 return _dbus_connection_send_and_unlock (connection,
03087 message,
03088 serial);
03089 }
03090
03091 static dbus_bool_t
03092 reply_handler_timeout (void *data)
03093 {
03094 DBusConnection *connection;
03095 DBusDispatchStatus status;
03096 DBusPendingCall *pending = data;
03097
03098 connection = _dbus_pending_call_get_connection_and_lock (pending);
03099
03100 _dbus_pending_call_queue_timeout_error_unlocked (pending,
03101 connection);
03102 _dbus_connection_remove_timeout_unlocked (connection,
03103 _dbus_pending_call_get_timeout_unlocked (pending));
03104 _dbus_pending_call_set_timeout_added_unlocked (pending, FALSE);
03105
03106 _dbus_verbose ("%s middle\n", _DBUS_FUNCTION_NAME);
03107 status = _dbus_connection_get_dispatch_status_unlocked (connection);
03108
03109
03110 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
03111
03112 return TRUE;
03113 }
03114
03152 dbus_bool_t
03153 dbus_connection_send_with_reply (DBusConnection *connection,
03154 DBusMessage *message,
03155 DBusPendingCall **pending_return,
03156 int timeout_milliseconds)
03157 {
03158 DBusPendingCall *pending;
03159 dbus_int32_t serial = -1;
03160 DBusDispatchStatus status;
03161
03162 _dbus_return_val_if_fail (connection != NULL, FALSE);
03163 _dbus_return_val_if_fail (message != NULL, FALSE);
03164 _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, FALSE);
03165
03166 if (pending_return)
03167 *pending_return = NULL;
03168
03169 CONNECTION_LOCK (connection);
03170
03171 if (!_dbus_connection_get_is_connected_unlocked (connection))
03172 {
03173 CONNECTION_UNLOCK (connection);
03174
03175 return TRUE;
03176 }
03177
03178 pending = _dbus_pending_call_new_unlocked (connection,
03179 timeout_milliseconds,
03180 reply_handler_timeout);
03181
03182 if (pending == NULL)
03183 {
03184 CONNECTION_UNLOCK (connection);
03185 return FALSE;
03186 }
03187
03188
03189 serial = dbus_message_get_serial (message);
03190 if (serial == 0)
03191 {
03192 serial = _dbus_connection_get_next_client_serial (connection);
03193 _dbus_message_set_serial (message, serial);
03194 }
03195
03196 if (!_dbus_pending_call_set_timeout_error_unlocked (pending, message, serial))
03197 goto error;
03198
03199
03200
03201
03202
03203 if (!_dbus_connection_attach_pending_call_unlocked (connection,
03204 pending))
03205 goto error;
03206
03207 if (!_dbus_connection_send_unlocked_no_update (connection, message, NULL))
03208 {
03209 _dbus_connection_detach_pending_call_and_unlock (connection,
03210 pending);
03211 goto error_unlocked;
03212 }
03213
03214 if (pending_return)
03215 *pending_return = pending;
03216 else
03217 {
03218 _dbus_connection_detach_pending_call_unlocked (connection, pending);
03219
03220
03221
03222 }
03223
03224 status = _dbus_connection_get_dispatch_status_unlocked (connection);
03225
03226
03227 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
03228
03229 if (pending_return == NULL)
03230 dbus_pending_call_unref (pending);
03231
03232 return TRUE;
03233
03234 error:
03235 CONNECTION_UNLOCK (connection);
03236 error_unlocked:
03237 dbus_pending_call_unref (pending);
03238 return FALSE;
03239 }
03240
03271 DBusMessage*
03272 dbus_connection_send_with_reply_and_block (DBusConnection *connection,
03273 DBusMessage *message,
03274 int timeout_milliseconds,
03275 DBusError *error)
03276 {
03277 DBusMessage *reply;
03278 DBusPendingCall *pending;
03279
03280 _dbus_return_val_if_fail (connection != NULL, NULL);
03281 _dbus_return_val_if_fail (message != NULL, NULL);
03282 _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, NULL);
03283 _dbus_return_val_if_error_is_set (error, NULL);
03284
03285 if (!dbus_connection_send_with_reply (connection, message,
03286 &pending, timeout_milliseconds))
03287 {
03288 _DBUS_SET_OOM (error);
03289 return NULL;
03290 }
03291
03292 if (pending == NULL)
03293 {
03294 dbus_set_error (error, DBUS_ERROR_DISCONNECTED, "Connection is closed");
03295 return NULL;
03296 }
03297
03298 dbus_pending_call_block (pending);
03299
03300 reply = dbus_pending_call_steal_reply (pending);
03301 dbus_pending_call_unref (pending);
03302
03303
03304
03305
03306 _dbus_assert (reply != NULL);
03307
03308 if (dbus_set_error_from_message (error, reply))
03309 {
03310 dbus_message_unref (reply);
03311 return NULL;
03312 }
03313 else
03314 return reply;
03315 }
03316
03325 DBusDispatchStatus
03326 _dbus_connection_flush_unlocked (DBusConnection *connection)
03327 {
03328
03329
03330
03331
03332
03333 DBusDispatchStatus status;
03334
03335 HAVE_LOCK_CHECK (connection);
03336
03337 while (connection->n_outgoing > 0 &&
03338 _dbus_connection_get_is_connected_unlocked (connection))
03339 {
03340 _dbus_verbose ("doing iteration in %s\n", _DBUS_FUNCTION_NAME);
03341 HAVE_LOCK_CHECK (connection);
03342 _dbus_connection_do_iteration_unlocked (connection,
03343 DBUS_ITERATION_DO_READING |
03344 DBUS_ITERATION_DO_WRITING |
03345 DBUS_ITERATION_BLOCK,
03346 -1);
03347 }
03348
03349 HAVE_LOCK_CHECK (connection);
03350 _dbus_verbose ("%s middle\n", _DBUS_FUNCTION_NAME);
03351 status = _dbus_connection_get_dispatch_status_unlocked (connection);
03352
03353 HAVE_LOCK_CHECK (connection);
03354 return status;
03355 }
03356
03362 void
03363 dbus_connection_flush (DBusConnection *connection)
03364 {
03365
03366
03367
03368
03369
03370 DBusDispatchStatus status;
03371
03372 _dbus_return_if_fail (connection != NULL);
03373
03374 CONNECTION_LOCK (connection);
03375
03376 status = _dbus_connection_flush_unlocked (connection);
03377
03378 HAVE_LOCK_CHECK (connection);
03379
03380 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
03381
03382 _dbus_verbose ("%s end\n", _DBUS_FUNCTION_NAME);
03383 }
03384
03395 static dbus_bool_t
03396 _dbus_connection_read_write_dispatch (DBusConnection *connection,
03397 int timeout_milliseconds,
03398 dbus_bool_t dispatch)
03399 {
03400 DBusDispatchStatus dstatus;
03401 dbus_bool_t no_progress_possible;
03402
03403 dstatus = dbus_connection_get_dispatch_status (connection);
03404
03405 if (dispatch && dstatus == DBUS_DISPATCH_DATA_REMAINS)
03406 {
03407 _dbus_verbose ("doing dispatch in %s\n", _DBUS_FUNCTION_NAME);
03408 dbus_connection_dispatch (connection);
03409 CONNECTION_LOCK (connection);
03410 }
03411 else if (dstatus == DBUS_DISPATCH_NEED_MEMORY)
03412 {
03413 _dbus_verbose ("pausing for memory in %s\n", _DBUS_FUNCTION_NAME);
03414 _dbus_memory_pause_based_on_timeout (timeout_milliseconds);
03415 CONNECTION_LOCK (connection);
03416 }
03417 else
03418 {
03419 CONNECTION_LOCK (connection);
03420 if (_dbus_connection_get_is_connected_unlocked (connection))
03421 {
03422 _dbus_verbose ("doing iteration in %s\n", _DBUS_FUNCTION_NAME);
03423 _dbus_connection_do_iteration_unlocked (connection,
03424 DBUS_ITERATION_DO_READING |
03425 DBUS_ITERATION_DO_WRITING |
03426 DBUS_ITERATION_BLOCK,
03427 timeout_milliseconds);
03428 }
03429 }
03430
03431 HAVE_LOCK_CHECK (connection);
03432
03433
03434
03435
03436 if (dispatch)
03437 no_progress_possible = connection->n_incoming == 0 &&
03438 connection->disconnect_message_link == NULL;
03439 else
03440 no_progress_possible = _dbus_connection_get_is_connected_unlocked (connection);
03441 CONNECTION_UNLOCK (connection);
03442 return !no_progress_possible;
03443 }
03444
03445
03480 dbus_bool_t
03481 dbus_connection_read_write_dispatch (DBusConnection *connection,
03482 int timeout_milliseconds)
03483 {
03484 _dbus_return_val_if_fail (connection != NULL, FALSE);
03485 _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, FALSE);
03486 return _dbus_connection_read_write_dispatch(connection, timeout_milliseconds, TRUE);
03487 }
03488
03512 dbus_bool_t
03513 dbus_connection_read_write (DBusConnection *connection,
03514 int timeout_milliseconds)
03515 {
03516 _dbus_return_val_if_fail (connection != NULL, FALSE);
03517 _dbus_return_val_if_fail (timeout_milliseconds >= 0 || timeout_milliseconds == -1, FALSE);
03518 return _dbus_connection_read_write_dispatch(connection, timeout_milliseconds, FALSE);
03519 }
03520
03521
03522
03523
03524
03525
03526 static void
03527 check_disconnected_message_arrived_unlocked (DBusConnection *connection,
03528 DBusMessage *head_of_queue)
03529 {
03530 HAVE_LOCK_CHECK (connection);
03531
03532
03533 if (connection->disconnect_message_link == NULL &&
03534 dbus_message_is_signal (head_of_queue,
03535 DBUS_INTERFACE_LOCAL,
03536 "Disconnected"))
03537 {
03538 connection->disconnected_message_arrived = TRUE;
03539 }
03540 }
03541
03561 DBusMessage*
03562 dbus_connection_borrow_message (DBusConnection *connection)
03563 {
03564 DBusDispatchStatus status;
03565 DBusMessage *message;
03566
03567 _dbus_return_val_if_fail (connection != NULL, NULL);
03568
03569 _dbus_verbose ("%s start\n", _DBUS_FUNCTION_NAME);
03570
03571
03572
03573
03574 status = dbus_connection_get_dispatch_status (connection);
03575 if (status != DBUS_DISPATCH_DATA_REMAINS)
03576 return NULL;
03577
03578 CONNECTION_LOCK (connection);
03579
03580 _dbus_connection_acquire_dispatch (connection);
03581
03582
03583 _dbus_assert (connection->message_borrowed == NULL);
03584
03585 connection->message_borrowed = _dbus_list_get_first (&connection->incoming_messages);
03586
03587 message = connection->message_borrowed;
03588
03589 check_disconnected_message_arrived_unlocked (connection, message);
03590
03591
03592 if (message == NULL)
03593 _dbus_connection_release_dispatch (connection);
03594
03595 CONNECTION_UNLOCK (connection);
03596
03597
03598
03599 return message;
03600 }
03601
03610 void
03611 dbus_connection_return_message (DBusConnection *connection,
03612 DBusMessage *message)
03613 {
03614 DBusDispatchStatus status;
03615
03616 _dbus_return_if_fail (connection != NULL);
03617 _dbus_return_if_fail (message != NULL);
03618 _dbus_return_if_fail (message == connection->message_borrowed);
03619 _dbus_return_if_fail (connection->dispatch_acquired);
03620
03621 CONNECTION_LOCK (connection);
03622
03623 _dbus_assert (message == connection->message_borrowed);
03624
03625 connection->message_borrowed = NULL;
03626
03627 _dbus_connection_release_dispatch (connection);
03628
03629 status = _dbus_connection_get_dispatch_status_unlocked (connection);
03630 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
03631 }
03632
03642 void
03643 dbus_connection_steal_borrowed_message (DBusConnection *connection,
03644 DBusMessage *message)
03645 {
03646 DBusMessage *pop_message;
03647 DBusDispatchStatus status;
03648
03649 _dbus_return_if_fail (connection != NULL);
03650 _dbus_return_if_fail (message != NULL);
03651 _dbus_return_if_fail (message == connection->message_borrowed);
03652 _dbus_return_if_fail (connection->dispatch_acquired);
03653
03654 CONNECTION_LOCK (connection);
03655
03656 _dbus_assert (message == connection->message_borrowed);
03657
03658 pop_message = _dbus_list_pop_first (&connection->incoming_messages);
03659 _dbus_assert (message == pop_message);
03660
03661 connection->n_incoming -= 1;
03662
03663 _dbus_verbose ("Incoming message %p stolen from queue, %d incoming\n",
03664 message, connection->n_incoming);
03665
03666 connection->message_borrowed = NULL;
03667
03668 _dbus_connection_release_dispatch (connection);
03669
03670 status = _dbus_connection_get_dispatch_status_unlocked (connection);
03671 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
03672 }
03673
03674
03675
03676
03677 static DBusList*
03678 _dbus_connection_pop_message_link_unlocked (DBusConnection *connection)
03679 {
03680 HAVE_LOCK_CHECK (connection);
03681
03682 _dbus_assert (connection->message_borrowed == NULL);
03683
03684 if (connection->n_incoming > 0)
03685 {
03686 DBusList *link;
03687
03688 link = _dbus_list_pop_first_link (&connection->incoming_messages);
03689 connection->n_incoming -= 1;
03690
03691 _dbus_verbose ("Message %p (%d %s %s %s '%s') removed from incoming queue %p, %d incoming\n",
03692 link->data,
03693 dbus_message_get_type (link->data),
03694 dbus_message_get_path (link->data) ?
03695 dbus_message_get_path (link->data) :
03696 "no path",
03697 dbus_message_get_interface (link->data) ?
03698 dbus_message_get_interface (link->data) :
03699 "no interface",
03700 dbus_message_get_member (link->data) ?
03701 dbus_message_get_member (link->data) :
03702 "no member",
03703 dbus_message_get_signature (link->data),
03704 connection, connection->n_incoming);
03705
03706 check_disconnected_message_arrived_unlocked (connection, link->data);
03707
03708 return link;
03709 }
03710 else
03711 return NULL;
03712 }
03713
03714
03715
03716
03717 static DBusMessage*
03718 _dbus_connection_pop_message_unlocked (DBusConnection *connection)
03719 {
03720 DBusList *link;
03721
03722 HAVE_LOCK_CHECK (connection);
03723
03724 link = _dbus_connection_pop_message_link_unlocked (connection);
03725
03726 if (link != NULL)
03727 {
03728 DBusMessage *message;
03729
03730 message = link->data;
03731
03732 _dbus_list_free_link (link);
03733
03734 return message;
03735 }
03736 else
03737 return NULL;
03738 }
03739
03740 static void
03741 _dbus_connection_putback_message_link_unlocked (DBusConnection *connection,
03742 DBusList *message_link)
03743 {
03744 HAVE_LOCK_CHECK (connection);
03745
03746 _dbus_assert (message_link != NULL);
03747
03748 _dbus_assert (connection->message_borrowed == NULL);
03749
03750 _dbus_assert (connection->dispatch_acquired);
03751
03752 _dbus_list_prepend_link (&connection->incoming_messages,
03753 message_link);
03754 connection->n_incoming += 1;
03755
03756 _dbus_verbose ("Message %p (%d %s %s '%s') put back into queue %p, %d incoming\n",
03757 message_link->data,
03758 dbus_message_get_type (message_link->data),
03759 dbus_message_get_interface (message_link->data) ?
03760 dbus_message_get_interface (message_link->data) :
03761 "no interface",
03762 dbus_message_get_member (message_link->data) ?
03763 dbus_message_get_member (message_link->data) :
03764 "no member",
03765 dbus_message_get_signature (message_link->data),
03766 connection, connection->n_incoming);
03767 }
03768
03788 DBusMessage*
03789 dbus_connection_pop_message (DBusConnection *connection)
03790 {
03791 DBusMessage *message;
03792 DBusDispatchStatus status;
03793
03794 _dbus_verbose ("%s start\n", _DBUS_FUNCTION_NAME);
03795
03796
03797
03798
03799 status = dbus_connection_get_dispatch_status (connection);
03800 if (status != DBUS_DISPATCH_DATA_REMAINS)
03801 return NULL;
03802
03803 CONNECTION_LOCK (connection);
03804 _dbus_connection_acquire_dispatch (connection);
03805 HAVE_LOCK_CHECK (connection);
03806
03807 message = _dbus_connection_pop_message_unlocked (connection);
03808
03809 _dbus_verbose ("Returning popped message %p\n", message);
03810
03811 _dbus_connection_release_dispatch (connection);
03812
03813 status = _dbus_connection_get_dispatch_status_unlocked (connection);
03814 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
03815
03816 return message;
03817 }
03818
03826 static void
03827 _dbus_connection_acquire_dispatch (DBusConnection *connection)
03828 {
03829 HAVE_LOCK_CHECK (connection);
03830
03831 _dbus_connection_ref_unlocked (connection);
03832 CONNECTION_UNLOCK (connection);
03833
03834 _dbus_verbose ("%s locking dispatch_mutex\n", _DBUS_FUNCTION_NAME);
03835 _dbus_mutex_lock (connection->dispatch_mutex);
03836
03837 while (connection->dispatch_acquired)
03838 {
03839 _dbus_verbose ("%s waiting for dispatch to be acquirable\n", _DBUS_FUNCTION_NAME);
03840 _dbus_condvar_wait (connection->dispatch_cond,
03841 connection->dispatch_mutex);
03842 }
03843
03844 _dbus_assert (!connection->dispatch_acquired);
03845
03846 connection->dispatch_acquired = TRUE;
03847
03848 _dbus_verbose ("%s unlocking dispatch_mutex\n", _DBUS_FUNCTION_NAME);
03849 _dbus_mutex_unlock (connection->dispatch_mutex);
03850
03851 CONNECTION_LOCK (connection);
03852 _dbus_connection_unref_unlocked (connection);
03853 }
03854
03862 static void
03863 _dbus_connection_release_dispatch (DBusConnection *connection)
03864 {
03865 HAVE_LOCK_CHECK (connection);
03866
03867 _dbus_verbose ("%s locking dispatch_mutex\n", _DBUS_FUNCTION_NAME);
03868 _dbus_mutex_lock (connection->dispatch_mutex);
03869
03870 _dbus_assert (connection->dispatch_acquired);
03871
03872 connection->dispatch_acquired = FALSE;
03873 _dbus_condvar_wake_one (connection->dispatch_cond);
03874
03875 _dbus_verbose ("%s unlocking dispatch_mutex\n", _DBUS_FUNCTION_NAME);
03876 _dbus_mutex_unlock (connection->dispatch_mutex);
03877 }
03878
03879 static void
03880 _dbus_connection_failed_pop (DBusConnection *connection,
03881 DBusList *message_link)
03882 {
03883 _dbus_list_prepend_link (&connection->incoming_messages,
03884 message_link);
03885 connection->n_incoming += 1;
03886 }
03887
03888
03889 static void
03890 notify_disconnected_unlocked (DBusConnection *connection)
03891 {
03892 HAVE_LOCK_CHECK (connection);
03893
03894
03895
03896
03897
03898
03899
03900 _dbus_bus_notify_shared_connection_disconnected_unlocked (connection);
03901
03902
03903
03904
03905
03906 if (connection->n_outgoing > 0)
03907 {
03908 DBusList *link;
03909
03910 _dbus_verbose ("Dropping %d outgoing messages since we're disconnected\n",
03911 connection->n_outgoing);
03912
03913 while ((link = _dbus_list_get_last_link (&connection->outgoing_messages)))
03914 {
03915 _dbus_connection_message_sent (connection, link->data);
03916 }
03917 }
03918 }
03919
03920
03921 static DBusDispatchStatus
03922 notify_disconnected_and_dispatch_complete_unlocked (DBusConnection *connection)
03923 {
03924 HAVE_LOCK_CHECK (connection);
03925
03926 if (connection->disconnect_message_link != NULL)
03927 {
03928 _dbus_verbose ("Sending disconnect message from %s\n",
03929 _DBUS_FUNCTION_NAME);
03930
03931
03932
03933
03934 connection_timeout_and_complete_all_pending_calls_unlocked (connection);
03935
03936
03937
03938
03939 _dbus_connection_queue_synthesized_message_link (connection,
03940 connection->disconnect_message_link);
03941 connection->disconnect_message_link = NULL;
03942
03943 return DBUS_DISPATCH_DATA_REMAINS;
03944 }
03945
03946 return DBUS_DISPATCH_COMPLETE;
03947 }
03948
03949 static DBusDispatchStatus
03950 _dbus_connection_get_dispatch_status_unlocked (DBusConnection *connection)
03951 {
03952 HAVE_LOCK_CHECK (connection);
03953
03954 if (connection->n_incoming > 0)
03955 return DBUS_DISPATCH_DATA_REMAINS;
03956 else if (!_dbus_transport_queue_messages (connection->transport))
03957 return DBUS_DISPATCH_NEED_MEMORY;
03958 else
03959 {
03960 DBusDispatchStatus status;
03961 dbus_bool_t is_connected;
03962
03963 status = _dbus_transport_get_dispatch_status (connection->transport);
03964 is_connected = _dbus_transport_get_is_connected (connection->transport);
03965
03966 _dbus_verbose ("dispatch status = %s is_connected = %d\n",
03967 DISPATCH_STATUS_NAME (status), is_connected);
03968
03969 if (!is_connected)
03970 {
03971
03972
03973
03974
03975
03976
03977 notify_disconnected_unlocked (connection);
03978
03979
03980
03981
03982
03983
03984 if (status == DBUS_DISPATCH_COMPLETE)
03985 status = notify_disconnected_and_dispatch_complete_unlocked (connection);
03986 }
03987
03988 if (status != DBUS_DISPATCH_COMPLETE)
03989 return status;
03990 else if (connection->n_incoming > 0)
03991 return DBUS_DISPATCH_DATA_REMAINS;
03992 else
03993 return DBUS_DISPATCH_COMPLETE;
03994 }
03995 }
03996
03997 static void
03998 _dbus_connection_update_dispatch_status_and_unlock (DBusConnection *connection,
03999 DBusDispatchStatus new_status)
04000 {
04001 dbus_bool_t changed;
04002 DBusDispatchStatusFunction function;
04003 void *data;
04004
04005 HAVE_LOCK_CHECK (connection);
04006
04007 _dbus_connection_ref_unlocked (connection);
04008
04009 changed = new_status != connection->last_dispatch_status;
04010
04011 connection->last_dispatch_status = new_status;
04012
04013 function = connection->dispatch_status_function;
04014 data = connection->dispatch_status_data;
04015
04016 if (connection->disconnected_message_arrived &&
04017 !connection->disconnected_message_processed)
04018 {
04019 connection->disconnected_message_processed = TRUE;
04020
04021
04022
04023
04024
04025 connection_forget_shared_unlocked (connection);
04026
04027 if (connection->exit_on_disconnect)
04028 {
04029 CONNECTION_UNLOCK (connection);
04030
04031 _dbus_verbose ("Exiting on Disconnected signal\n");
04032 _dbus_exit (1);
04033 _dbus_assert_not_reached ("Call to exit() returned");
04034 }
04035 }
04036
04037
04038 CONNECTION_UNLOCK (connection);
04039
04040 if (changed && function)
04041 {
04042 _dbus_verbose ("Notifying of change to dispatch status of %p now %d (%s)\n",
04043 connection, new_status,
04044 DISPATCH_STATUS_NAME (new_status));
04045 (* function) (connection, new_status, data);
04046 }
04047
04048 dbus_connection_unref (connection);
04049 }
04050
04076 DBusDispatchStatus
04077 dbus_connection_get_dispatch_status (DBusConnection *connection)
04078 {
04079 DBusDispatchStatus status;
04080
04081 _dbus_return_val_if_fail (connection != NULL, DBUS_DISPATCH_COMPLETE);
04082
04083 _dbus_verbose ("%s start\n", _DBUS_FUNCTION_NAME);
04084
04085 CONNECTION_LOCK (connection);
04086
04087 status = _dbus_connection_get_dispatch_status_unlocked (connection);
04088
04089 CONNECTION_UNLOCK (connection);
04090
04091 return status;
04092 }
04093
04097 static DBusHandlerResult
04098 _dbus_connection_peer_filter_unlocked_no_update (DBusConnection *connection,
04099 DBusMessage *message)
04100 {
04101 if (connection->route_peer_messages && dbus_message_get_destination (message) != NULL)
04102 {
04103
04104 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
04105 }
04106 else if (dbus_message_is_method_call (message,
04107 DBUS_INTERFACE_PEER,
04108 "Ping"))
04109 {
04110 DBusMessage *ret;
04111 dbus_bool_t sent;
04112
04113 ret = dbus_message_new_method_return (message);
04114 if (ret == NULL)
04115 return DBUS_HANDLER_RESULT_NEED_MEMORY;
04116
04117 sent = _dbus_connection_send_unlocked_no_update (connection, ret, NULL);
04118
04119 dbus_message_unref (ret);
04120
04121 if (!sent)
04122 return DBUS_HANDLER_RESULT_NEED_MEMORY;
04123
04124 return DBUS_HANDLER_RESULT_HANDLED;
04125 }
04126 else if (dbus_message_is_method_call (message,
04127 DBUS_INTERFACE_PEER,
04128 "GetMachineId"))
04129 {
04130 DBusMessage *ret;
04131 dbus_bool_t sent;
04132 DBusString uuid;
04133
04134 ret = dbus_message_new_method_return (message);
04135 if (ret == NULL)
04136 return DBUS_HANDLER_RESULT_NEED_MEMORY;
04137
04138 sent = FALSE;
04139 _dbus_string_init (&uuid);
04140 if (_dbus_get_local_machine_uuid_encoded (&uuid))
04141 {
04142 const char *v_STRING = _dbus_string_get_const_data (&uuid);
04143 if (dbus_message_append_args (ret,
04144 DBUS_TYPE_STRING, &v_STRING,
04145 DBUS_TYPE_INVALID))
04146 {
04147 sent = _dbus_connection_send_unlocked_no_update (connection, ret, NULL);
04148 }
04149 }
04150 _dbus_string_free (&uuid);
04151
04152 dbus_message_unref (ret);
04153
04154 if (!sent)
04155 return DBUS_HANDLER_RESULT_NEED_MEMORY;
04156
04157 return DBUS_HANDLER_RESULT_HANDLED;
04158 }
04159 else if (dbus_message_has_interface (message, DBUS_INTERFACE_PEER))
04160 {
04161
04162
04163
04164
04165
04166 DBusMessage *ret;
04167 dbus_bool_t sent;
04168
04169 ret = dbus_message_new_error (message,
04170 DBUS_ERROR_UNKNOWN_METHOD,
04171 "Unknown method invoked on org.freedesktop.DBus.Peer interface");
04172 if (ret == NULL)
04173 return DBUS_HANDLER_RESULT_NEED_MEMORY;
04174
04175 sent = _dbus_connection_send_unlocked_no_update (connection, ret, NULL);
04176
04177 dbus_message_unref (ret);
04178
04179 if (!sent)
04180 return DBUS_HANDLER_RESULT_NEED_MEMORY;
04181
04182 return DBUS_HANDLER_RESULT_HANDLED;
04183 }
04184 else
04185 {
04186 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
04187 }
04188 }
04189
04196 static DBusHandlerResult
04197 _dbus_connection_run_builtin_filters_unlocked_no_update (DBusConnection *connection,
04198 DBusMessage *message)
04199 {
04200
04201
04202
04203 return _dbus_connection_peer_filter_unlocked_no_update (connection, message);
04204 }
04205
04248 DBusDispatchStatus
04249 dbus_connection_dispatch (DBusConnection *connection)
04250 {
04251 DBusMessage *message;
04252 DBusList *link, *filter_list_copy, *message_link;
04253 DBusHandlerResult result;
04254 DBusPendingCall *pending;
04255 dbus_int32_t reply_serial;
04256 DBusDispatchStatus status;
04257
04258 _dbus_return_val_if_fail (connection != NULL, DBUS_DISPATCH_COMPLETE);
04259
04260 _dbus_verbose ("%s\n", _DBUS_FUNCTION_NAME);
04261
04262 CONNECTION_LOCK (connection);
04263 status = _dbus_connection_get_dispatch_status_unlocked (connection);
04264 if (status != DBUS_DISPATCH_DATA_REMAINS)
04265 {
04266
04267 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
04268 return status;
04269 }
04270
04271
04272
04273
04274 _dbus_connection_ref_unlocked (connection);
04275
04276 _dbus_connection_acquire_dispatch (connection);
04277 HAVE_LOCK_CHECK (connection);
04278
04279 message_link = _dbus_connection_pop_message_link_unlocked (connection);
04280 if (message_link == NULL)
04281 {
04282
04283
04284 _dbus_verbose ("another thread dispatched message (during acquire_dispatch above)\n");
04285
04286 _dbus_connection_release_dispatch (connection);
04287
04288 status = _dbus_connection_get_dispatch_status_unlocked (connection);
04289
04290 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
04291
04292 dbus_connection_unref (connection);
04293
04294 return status;
04295 }
04296
04297 message = message_link->data;
04298
04299 _dbus_verbose (" dispatching message %p (%d %s %s '%s')\n",
04300 message,
04301 dbus_message_get_type (message),
04302 dbus_message_get_interface (message) ?
04303 dbus_message_get_interface (message) :
04304 "no interface",
04305 dbus_message_get_member (message) ?
04306 dbus_message_get_member (message) :
04307 "no member",
04308 dbus_message_get_signature (message));
04309
04310 result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
04311
04312
04313
04314
04315
04316
04317
04318
04319 reply_serial = dbus_message_get_reply_serial (message);
04320 pending = _dbus_hash_table_lookup_int (connection->pending_replies,
04321 reply_serial);
04322 if (pending)
04323 {
04324 _dbus_verbose ("Dispatching a pending reply\n");
04325 complete_pending_call_and_unlock (connection, pending, message);
04326 pending = NULL;
04327
04328 CONNECTION_LOCK (connection);
04329 _dbus_verbose ("pending call completed in dispatch\n");
04330 result = DBUS_HANDLER_RESULT_HANDLED;
04331 goto out;
04332 }
04333
04334 result = _dbus_connection_run_builtin_filters_unlocked_no_update (connection, message);
04335 if (result != DBUS_HANDLER_RESULT_NOT_YET_HANDLED)
04336 goto out;
04337
04338 if (!_dbus_list_copy (&connection->filter_list, &filter_list_copy))
04339 {
04340 _dbus_connection_release_dispatch (connection);
04341 HAVE_LOCK_CHECK (connection);
04342
04343 _dbus_connection_failed_pop (connection, message_link);
04344
04345
04346 _dbus_connection_update_dispatch_status_and_unlock (connection,
04347 DBUS_DISPATCH_NEED_MEMORY);
04348
04349 if (pending)
04350 dbus_pending_call_unref (pending);
04351 dbus_connection_unref (connection);
04352
04353 return DBUS_DISPATCH_NEED_MEMORY;
04354 }
04355
04356 _dbus_list_foreach (&filter_list_copy,
04357 (DBusForeachFunction)_dbus_message_filter_ref,
04358 NULL);
04359
04360
04361
04362
04363 CONNECTION_UNLOCK (connection);
04364
04365 link = _dbus_list_get_first_link (&filter_list_copy);
04366 while (link != NULL)
04367 {
04368 DBusMessageFilter *filter = link->data;
04369 DBusList *next = _dbus_list_get_next_link (&filter_list_copy, link);
04370
04371 if (filter->function == NULL)
04372 {
04373 _dbus_verbose (" filter was removed in a callback function\n");
04374 link = next;
04375 continue;
04376 }
04377
04378 _dbus_verbose (" running filter on message %p\n", message);
04379 result = (* filter->function) (connection, message, filter->user_data);
04380
04381 if (result != DBUS_HANDLER_RESULT_NOT_YET_HANDLED)
04382 break;
04383
04384 link = next;
04385 }
04386
04387 _dbus_list_foreach (&filter_list_copy,
04388 (DBusForeachFunction)_dbus_message_filter_unref,
04389 NULL);
04390 _dbus_list_clear (&filter_list_copy);
04391
04392 CONNECTION_LOCK (connection);
04393
04394 if (result == DBUS_HANDLER_RESULT_NEED_MEMORY)
04395 {
04396 _dbus_verbose ("No memory in %s\n", _DBUS_FUNCTION_NAME);
04397 goto out;
04398 }
04399 else if (result == DBUS_HANDLER_RESULT_HANDLED)
04400 {
04401 _dbus_verbose ("filter handled message in dispatch\n");
04402 goto out;
04403 }
04404
04405
04406
04407
04408 _dbus_verbose (" running object path dispatch on message %p (%d %s %s '%s')\n",
04409 message,
04410 dbus_message_get_type (message),
04411 dbus_message_get_interface (message) ?
04412 dbus_message_get_interface (message) :
04413 "no interface",
04414 dbus_message_get_member (message) ?
04415 dbus_message_get_member (message) :
04416 "no member",
04417 dbus_message_get_signature (message));
04418
04419 HAVE_LOCK_CHECK (connection);
04420 result = _dbus_object_tree_dispatch_and_unlock (connection->objects,
04421 message);
04422
04423 CONNECTION_LOCK (connection);
04424
04425 if (result != DBUS_HANDLER_RESULT_NOT_YET_HANDLED)
04426 {
04427 _dbus_verbose ("object tree handled message in dispatch\n");
04428 goto out;
04429 }
04430
04431 if (dbus_message_get_type (message) == DBUS_MESSAGE_TYPE_METHOD_CALL)
04432 {
04433 DBusMessage *reply;
04434 DBusString str;
04435 DBusPreallocatedSend *preallocated;
04436
04437 _dbus_verbose (" sending error %s\n",
04438 DBUS_ERROR_UNKNOWN_METHOD);
04439
04440 if (!_dbus_string_init (&str))
04441 {
04442 result = DBUS_HANDLER_RESULT_NEED_MEMORY;
04443 _dbus_verbose ("no memory for error string in dispatch\n");
04444 goto out;
04445 }
04446
04447 if (!_dbus_string_append_printf (&str,
04448 "Method \"%s\" with signature \"%s\" on interface \"%s\" doesn't exist\n",
04449 dbus_message_get_member (message),
04450 dbus_message_get_signature (message),
04451 dbus_message_get_interface (message)))
04452 {
04453 _dbus_string_free (&str);
04454 result = DBUS_HANDLER_RESULT_NEED_MEMORY;
04455 _dbus_verbose ("no memory for error string in dispatch\n");
04456 goto out;
04457 }
04458
04459 reply = dbus_message_new_error (message,
04460 DBUS_ERROR_UNKNOWN_METHOD,
04461 _dbus_string_get_const_data (&str));
04462 _dbus_string_free (&str);
04463
04464 if (reply == NULL)
04465 {
04466 result = DBUS_HANDLER_RESULT_NEED_MEMORY;
04467 _dbus_verbose ("no memory for error reply in dispatch\n");
04468 goto out;
04469 }
04470
04471 preallocated = _dbus_connection_preallocate_send_unlocked (connection);
04472
04473 if (preallocated == NULL)
04474 {
04475 dbus_message_unref (reply);
04476 result = DBUS_HANDLER_RESULT_NEED_MEMORY;
04477 _dbus_verbose ("no memory for error send in dispatch\n");
04478 goto out;
04479 }
04480
04481 _dbus_connection_send_preallocated_unlocked_no_update (connection, preallocated,
04482 reply, NULL);
04483
04484 dbus_message_unref (reply);
04485
04486 result = DBUS_HANDLER_RESULT_HANDLED;
04487 }
04488
04489 _dbus_verbose (" done dispatching %p (%d %s %s '%s') on connection %p\n", message,
04490 dbus_message_get_type (message),
04491 dbus_message_get_interface (message) ?
04492 dbus_message_get_interface (message) :
04493 "no interface",
04494 dbus_message_get_member (message) ?
04495 dbus_message_get_member (message) :
04496 "no member",
04497 dbus_message_get_signature (message),
04498 connection);
04499
04500 out:
04501 if (result == DBUS_HANDLER_RESULT_NEED_MEMORY)
04502 {
04503 _dbus_verbose ("out of memory in %s\n", _DBUS_FUNCTION_NAME);
04504
04505
04506
04507
04508
04509 _dbus_connection_putback_message_link_unlocked (connection,
04510 message_link);
04511 }
04512 else
04513 {
04514 _dbus_verbose (" ... done dispatching in %s\n", _DBUS_FUNCTION_NAME);
04515
04516 _dbus_list_free_link (message_link);
04517 dbus_message_unref (message);
04518
04519
04520 }
04521
04522 _dbus_connection_release_dispatch (connection);
04523 HAVE_LOCK_CHECK (connection);
04524
04525 _dbus_verbose ("%s before final status update\n", _DBUS_FUNCTION_NAME);
04526 status = _dbus_connection_get_dispatch_status_unlocked (connection);
04527
04528
04529 _dbus_connection_update_dispatch_status_and_unlock (connection, status);
04530
04531 dbus_connection_unref (connection);
04532
04533 return status;
04534 }
04535
04595 dbus_bool_t
04596 dbus_connection_set_watch_functions (DBusConnection *connection,
04597 DBusAddWatchFunction add_function,
04598 DBusRemoveWatchFunction remove_function,
04599 DBusWatchToggledFunction toggled_function,
04600 void *data,
04601 DBusFreeFunction free_data_function)
04602 {
04603 dbus_bool_t retval;
04604 DBusWatchList *watches;
04605
04606 _dbus_return_val_if_fail (connection != NULL, FALSE);
04607
04608 CONNECTION_LOCK (connection);
04609
04610 #ifndef DBUS_DISABLE_CHECKS
04611 if (connection->watches == NULL)
04612 {
04613 _dbus_warn_check_failed ("Re-entrant call to %s is not allowed\n",
04614 _DBUS_FUNCTION_NAME);
04615 return FALSE;
04616 }
04617 #endif
04618
04619
04620 _dbus_connection_ref_unlocked (connection);
04621
04622
04623
04624
04625
04626 watches = connection->watches;
04627 connection->watches = NULL;
04628 CONNECTION_UNLOCK (connection);
04629
04630 retval = _dbus_watch_list_set_functions (watches,
04631 add_function, remove_function,
04632 toggled_function,
04633 data, free_data_function);
04634 CONNECTION_LOCK (connection);
04635 connection->watches = watches;
04636
04637 CONNECTION_UNLOCK (connection);
04638
04639 dbus_connection_unref (connection);
04640
04641 return retval;
04642 }
04643
04677 dbus_bool_t
04678 dbus_connection_set_timeout_functions (DBusConnection *connection,
04679 DBusAddTimeoutFunction add_function,
04680 DBusRemoveTimeoutFunction remove_function,
04681 DBusTimeoutToggledFunction toggled_function,
04682 void *data,
04683 DBusFreeFunction free_data_function)
04684 {
04685 dbus_bool_t retval;
04686 DBusTimeoutList *timeouts;
04687
04688 _dbus_return_val_if_fail (connection != NULL, FALSE);
04689
04690 CONNECTION_LOCK (connection);
04691
04692 #ifndef DBUS_DISABLE_CHECKS
04693 if (connection->timeouts == NULL)
04694 {
04695 _dbus_warn_check_failed ("Re-entrant call to %s is not allowed\n",
04696 _DBUS_FUNCTION_NAME);
04697 return FALSE;
04698 }
04699 #endif
04700
04701
04702 _dbus_connection_ref_unlocked (connection);
04703
04704 timeouts = connection->timeouts;
04705 connection->timeouts = NULL;
04706 CONNECTION_UNLOCK (connection);
04707
04708 retval = _dbus_timeout_list_set_functions (timeouts,
04709 add_function, remove_function,
04710 toggled_function,
04711 data, free_data_function);
04712 CONNECTION_LOCK (connection);
04713 connection->timeouts = timeouts;
04714
04715 CONNECTION_UNLOCK (connection);
04716
04717 dbus_connection_unref (connection);
04718
04719 return retval;
04720 }
04721
04736 void
04737 dbus_connection_set_wakeup_main_function (DBusConnection *connection,
04738 DBusWakeupMainFunction wakeup_main_function,
04739 void *data,
04740 DBusFreeFunction free_data_function)
04741 {
04742 void *old_data;
04743 DBusFreeFunction old_free_data;
04744
04745 _dbus_return_if_fail (connection != NULL);
04746
04747 CONNECTION_LOCK (connection);
04748 old_data = connection->wakeup_main_data;
04749 old_free_data = connection->free_wakeup_main_data;
04750
04751 connection->wakeup_main_function = wakeup_main_function;
04752 connection->wakeup_main_data = data;
04753 connection->free_wakeup_main_data = free_data_function;
04754
04755 CONNECTION_UNLOCK (connection);
04756
04757
04758 if (old_free_data)
04759 (*old_free_data) (old_data);
04760 }
04761
04782 void
04783 dbus_connection_set_dispatch_status_function (DBusConnection *connection,
04784 DBusDispatchStatusFunction function,
04785 void *data,
04786 DBusFreeFunction free_data_function)
04787 {
04788 void *old_data;
04789 DBusFreeFunction old_free_data;
04790
04791 _dbus_return_if_fail (connection != NULL);
04792
04793 CONNECTION_LOCK (connection);
04794 old_data = connection->dispatch_status_data;
04795 old_free_data = connection->free_dispatch_status_data;
04796
04797 connection->dispatch_status_function = function;
04798 connection->dispatch_status_data = data;
04799 connection->free_dispatch_status_data = free_data_function;
04800
04801 CONNECTION_UNLOCK (connection);
04802
04803
04804 if (old_free_data)
04805 (*old_free_data) (old_data);
04806 }
04807
04827 dbus_bool_t
04828 dbus_connection_get_unix_fd (DBusConnection *connection,
04829 int *fd)
04830 {
04831 _dbus_return_val_if_fail (connection != NULL, FALSE);
04832 _dbus_return_val_if_fail (connection->transport != NULL, FALSE);
04833
04834 #ifdef DBUS_WIN
04835
04836 return FALSE;
04837 #endif
04838
04839 return dbus_connection_get_socket(connection, fd);
04840 }
04841
04857 dbus_bool_t
04858 dbus_connection_get_socket(DBusConnection *connection,
04859 int *fd)
04860 {
04861 dbus_bool_t retval;
04862
04863 _dbus_return_val_if_fail (connection != NULL, FALSE);
04864 _dbus_return_val_if_fail (connection->transport != NULL, FALSE);
04865
04866 CONNECTION_LOCK (connection);
04867
04868 retval = _dbus_transport_get_socket_fd (connection->transport,
04869 fd);
04870
04871 CONNECTION_UNLOCK (connection);
04872
04873 return retval;
04874 }
04875
04876
04899 dbus_bool_t
04900 dbus_connection_get_unix_user (DBusConnection *connection,
04901 unsigned long *uid)
04902 {
04903 dbus_bool_t result;
04904
04905 _dbus_return_val_if_fail (connection != NULL, FALSE);
04906 _dbus_return_val_if_fail (uid != NULL, FALSE);
04907
04908 CONNECTION_LOCK (connection);
04909
04910 if (!_dbus_transport_get_is_authenticated (connection->transport))
04911 result = FALSE;
04912 else
04913 result = _dbus_transport_get_unix_user (connection->transport,
04914 uid);
04915
04916 #ifdef DBUS_WIN
04917 _dbus_assert (!result);
04918 #endif
04919
04920 CONNECTION_UNLOCK (connection);
04921
04922 return result;
04923 }
04924
04935 dbus_bool_t
04936 dbus_connection_get_unix_process_id (DBusConnection *connection,
04937 unsigned long *pid)
04938 {
04939 dbus_bool_t result;
04940
04941 _dbus_return_val_if_fail (connection != NULL, FALSE);
04942 _dbus_return_val_if_fail (pid != NULL, FALSE);
04943
04944 CONNECTION_LOCK (connection);
04945
04946 if (!_dbus_transport_get_is_authenticated (connection->transport))
04947 result = FALSE;
04948 else
04949 result = _dbus_transport_get_unix_process_id (connection->transport,
04950 pid);
04951 #ifdef DBUS_WIN
04952 _dbus_assert (!result);
04953 #endif
04954
04955 CONNECTION_UNLOCK (connection);
04956
04957 return result;
04958 }
04959
04982 void
04983 dbus_connection_set_unix_user_function (DBusConnection *connection,
04984 DBusAllowUnixUserFunction function,
04985 void *data,
04986 DBusFreeFunction free_data_function)
04987 {
04988 void *old_data = NULL;
04989 DBusFreeFunction old_free_function = NULL;
04990
04991 _dbus_return_if_fail (connection != NULL);
04992
04993 CONNECTION_LOCK (connection);
04994 _dbus_transport_set_unix_user_function (connection->transport,
04995 function, data, free_data_function,
04996 &old_data, &old_free_function);
04997 CONNECTION_UNLOCK (connection);
04998
04999 if (old_free_function != NULL)
05000 (* old_free_function) (old_data);
05001 }
05002
05034 dbus_bool_t
05035 dbus_connection_get_windows_user (DBusConnection *connection,
05036 char **windows_sid_p)
05037 {
05038 dbus_bool_t result;
05039
05040 _dbus_return_val_if_fail (connection != NULL, FALSE);
05041 _dbus_return_val_if_fail (windows_sid_p != NULL, FALSE);
05042
05043 CONNECTION_LOCK (connection);
05044
05045 if (!_dbus_transport_get_is_authenticated (connection->transport))
05046 result = FALSE;
05047 else
05048 result = _dbus_transport_get_windows_user (connection->transport,
05049 windows_sid_p);
05050
05051 #ifdef DBUS_UNIX
05052 _dbus_assert (!result);
05053 #endif
05054
05055 CONNECTION_UNLOCK (connection);
05056
05057 return result;
05058 }
05059
05081 void
05082 dbus_connection_set_windows_user_function (DBusConnection *connection,
05083 DBusAllowWindowsUserFunction function,
05084 void *data,
05085 DBusFreeFunction free_data_function)
05086 {
05087 void *old_data = NULL;
05088 DBusFreeFunction old_free_function = NULL;
05089
05090 _dbus_return_if_fail (connection != NULL);
05091
05092 CONNECTION_LOCK (connection);
05093 _dbus_transport_set_windows_user_function (connection->transport,
05094 function, data, free_data_function,
05095 &old_data, &old_free_function);
05096 CONNECTION_UNLOCK (connection);
05097
05098 if (old_free_function != NULL)
05099 (* old_free_function) (old_data);
05100 }
05101
05128 void
05129 dbus_connection_set_allow_anonymous (DBusConnection *connection,
05130 dbus_bool_t value)
05131 {
05132 _dbus_return_if_fail (connection != NULL);
05133
05134 CONNECTION_LOCK (connection);
05135 _dbus_transport_set_allow_anonymous (connection->transport, value);
05136 CONNECTION_UNLOCK (connection);
05137 }
05138
05156 void
05157 dbus_connection_set_route_peer_messages (DBusConnection *connection,
05158 dbus_bool_t value)
05159 {
05160 _dbus_return_if_fail (connection != NULL);
05161
05162 CONNECTION_LOCK (connection);
05163 connection->route_peer_messages = TRUE;
05164 CONNECTION_UNLOCK (connection);
05165 }
05166
05188 dbus_bool_t
05189 dbus_connection_add_filter (DBusConnection *connection,
05190 DBusHandleMessageFunction function,
05191 void *user_data,
05192 DBusFreeFunction free_data_function)
05193 {
05194 DBusMessageFilter *filter;
05195
05196 _dbus_return_val_if_fail (connection != NULL, FALSE);
05197 _dbus_return_val_if_fail (function != NULL, FALSE);
05198
05199 filter = dbus_new0 (DBusMessageFilter, 1);
05200 if (filter == NULL)
05201 return FALSE;
05202
05203 filter->refcount.value = 1;
05204
05205 CONNECTION_LOCK (connection);
05206
05207 if (!_dbus_list_append (&connection->filter_list,
05208 filter))
05209 {
05210 _dbus_message_filter_unref (filter);
05211 CONNECTION_UNLOCK (connection);
05212 return FALSE;
05213 }
05214
05215
05216
05217
05218
05219
05220 filter->function = function;
05221 filter->user_data = user_data;
05222 filter->free_user_data_function = free_data_function;
05223
05224 CONNECTION_UNLOCK (connection);
05225 return TRUE;
05226 }
05227
05240 void
05241 dbus_connection_remove_filter (DBusConnection *connection,
05242 DBusHandleMessageFunction function,
05243 void *user_data)
05244 {
05245 DBusList *link;
05246 DBusMessageFilter *filter;
05247
05248 _dbus_return_if_fail (connection != NULL);
05249 _dbus_return_if_fail (function != NULL);
05250
05251 CONNECTION_LOCK (connection);
05252
05253 filter = NULL;
05254
05255 link = _dbus_list_get_last_link (&connection->filter_list);
05256 while (link != NULL)
05257 {
05258 filter = link->data;
05259
05260 if (filter->function == function &&
05261 filter->user_data == user_data)
05262 {
05263 _dbus_list_remove_link (&connection->filter_list, link);
05264 filter->function = NULL;
05265
05266 break;
05267 }
05268
05269 link = _dbus_list_get_prev_link (&connection->filter_list, link);
05270 }
05271
05272 CONNECTION_UNLOCK (connection);
05273
05274 #ifndef DBUS_DISABLE_CHECKS
05275 if (filter == NULL)
05276 {
05277 _dbus_warn_check_failed ("Attempt to remove filter function %p user data %p, but no such filter has been added\n",
05278 function, user_data);
05279 return;
05280 }
05281 #endif
05282
05283
05284 if (filter->free_user_data_function)
05285 (* filter->free_user_data_function) (filter->user_data);
05286
05287 filter->free_user_data_function = NULL;
05288 filter->user_data = NULL;
05289
05290 _dbus_message_filter_unref (filter);
05291 }
05292
05305 dbus_bool_t
05306 dbus_connection_try_register_object_path (DBusConnection *connection,
05307 const char *path,
05308 const DBusObjectPathVTable *vtable,
05309 void *user_data,
05310 DBusError *error)
05311 {
05312 char **decomposed_path;
05313 dbus_bool_t retval;
05314
05315 _dbus_return_val_if_fail (connection != NULL, FALSE);
05316 _dbus_return_val_if_fail (path != NULL, FALSE);
05317 _dbus_return_val_if_fail (path[0] == '/', FALSE);
05318 _dbus_return_val_if_fail (vtable != NULL, FALSE);
05319
05320 if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
05321 return FALSE;
05322
05323 CONNECTION_LOCK (connection);
05324
05325 retval = _dbus_object_tree_register (connection->objects,
05326 FALSE,
05327 (const char **) decomposed_path, vtable,
05328 user_data, error);
05329
05330 CONNECTION_UNLOCK (connection);
05331
05332 dbus_free_string_array (decomposed_path);
05333
05334 return retval;
05335 }
05336
05351 dbus_bool_t
05352 dbus_connection_register_object_path (DBusConnection *connection,
05353 const char *path,
05354 const DBusObjectPathVTable *vtable,
05355 void *user_data)
05356 {
05357 char **decomposed_path;
05358 dbus_bool_t retval;
05359 DBusError error = DBUS_ERROR_INIT;
05360
05361 _dbus_return_val_if_fail (connection != NULL, FALSE);
05362 _dbus_return_val_if_fail (path != NULL, FALSE);
05363 _dbus_return_val_if_fail (path[0] == '/', FALSE);
05364 _dbus_return_val_if_fail (vtable != NULL, FALSE);
05365
05366 if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
05367 return FALSE;
05368
05369 CONNECTION_LOCK (connection);
05370
05371 retval = _dbus_object_tree_register (connection->objects,
05372 FALSE,
05373 (const char **) decomposed_path, vtable,
05374 user_data, &error);
05375
05376 CONNECTION_UNLOCK (connection);
05377
05378 dbus_free_string_array (decomposed_path);
05379
05380 if (dbus_error_has_name (&error, DBUS_ERROR_ADDRESS_IN_USE))
05381 {
05382 _dbus_warn ("%s\n", error.message);
05383 dbus_error_free (&error);
05384 return FALSE;
05385 }
05386
05387 return retval;
05388 }
05389
05404 dbus_bool_t
05405 dbus_connection_try_register_fallback (DBusConnection *connection,
05406 const char *path,
05407 const DBusObjectPathVTable *vtable,
05408 void *user_data,
05409 DBusError *error)
05410 {
05411 char **decomposed_path;
05412 dbus_bool_t retval;
05413
05414 _dbus_return_val_if_fail (connection != NULL, FALSE);
05415 _dbus_return_val_if_fail (path != NULL, FALSE);
05416 _dbus_return_val_if_fail (path[0] == '/', FALSE);
05417 _dbus_return_val_if_fail (vtable != NULL, FALSE);
05418
05419 if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
05420 return FALSE;
05421
05422 CONNECTION_LOCK (connection);
05423
05424 retval = _dbus_object_tree_register (connection->objects,
05425 TRUE,
05426 (const char **) decomposed_path, vtable,
05427 user_data, error);
05428
05429 CONNECTION_UNLOCK (connection);
05430
05431 dbus_free_string_array (decomposed_path);
05432
05433 return retval;
05434 }
05435
05452 dbus_bool_t
05453 dbus_connection_register_fallback (DBusConnection *connection,
05454 const char *path,
05455 const DBusObjectPathVTable *vtable,
05456 void *user_data)
05457 {
05458 char **decomposed_path;
05459 dbus_bool_t retval;
05460 DBusError error = DBUS_ERROR_INIT;
05461
05462 _dbus_return_val_if_fail (connection != NULL, FALSE);
05463 _dbus_return_val_if_fail (path != NULL, FALSE);
05464 _dbus_return_val_if_fail (path[0] == '/', FALSE);
05465 _dbus_return_val_if_fail (vtable != NULL, FALSE);
05466
05467 if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
05468 return FALSE;
05469
05470 CONNECTION_LOCK (connection);
05471
05472 retval = _dbus_object_tree_register (connection->objects,
05473 TRUE,
05474 (const char **) decomposed_path, vtable,
05475 user_data, &error);
05476
05477 CONNECTION_UNLOCK (connection);
05478
05479 dbus_free_string_array (decomposed_path);
05480
05481 if (dbus_error_has_name (&error, DBUS_ERROR_ADDRESS_IN_USE))
05482 {
05483 _dbus_warn ("%s\n", error.message);
05484 dbus_error_free (&error);
05485 return FALSE;
05486 }
05487
05488 return retval;
05489 }
05490
05500 dbus_bool_t
05501 dbus_connection_unregister_object_path (DBusConnection *connection,
05502 const char *path)
05503 {
05504 char **decomposed_path;
05505
05506 _dbus_return_val_if_fail (connection != NULL, FALSE);
05507 _dbus_return_val_if_fail (path != NULL, FALSE);
05508 _dbus_return_val_if_fail (path[0] == '/', FALSE);
05509
05510 if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
05511 return FALSE;
05512
05513 CONNECTION_LOCK (connection);
05514
05515 _dbus_object_tree_unregister_and_unlock (connection->objects, (const char **) decomposed_path);
05516
05517 dbus_free_string_array (decomposed_path);
05518
05519 return TRUE;
05520 }
05521
05532 dbus_bool_t
05533 dbus_connection_get_object_path_data (DBusConnection *connection,
05534 const char *path,
05535 void **data_p)
05536 {
05537 char **decomposed_path;
05538
05539 _dbus_return_val_if_fail (connection != NULL, FALSE);
05540 _dbus_return_val_if_fail (path != NULL, FALSE);
05541 _dbus_return_val_if_fail (data_p != NULL, FALSE);
05542
05543 *data_p = NULL;
05544
05545 if (!_dbus_decompose_path (path, strlen (path), &decomposed_path, NULL))
05546 return FALSE;
05547
05548 CONNECTION_LOCK (connection);
05549
05550 *data_p = _dbus_object_tree_get_user_data_unlocked (connection->objects, (const char**) decomposed_path);
05551
05552 CONNECTION_UNLOCK (connection);
05553
05554 dbus_free_string_array (decomposed_path);
05555
05556 return TRUE;
05557 }
05558
05569 dbus_bool_t
05570 dbus_connection_list_registered (DBusConnection *connection,
05571 const char *parent_path,
05572 char ***child_entries)
05573 {
05574 char **decomposed_path;
05575 dbus_bool_t retval;
05576 _dbus_return_val_if_fail (connection != NULL, FALSE);
05577 _dbus_return_val_if_fail (parent_path != NULL, FALSE);
05578 _dbus_return_val_if_fail (parent_path[0] == '/', FALSE);
05579 _dbus_return_val_if_fail (child_entries != NULL, FALSE);
05580
05581 if (!_dbus_decompose_path (parent_path, strlen (parent_path), &decomposed_path, NULL))
05582 return FALSE;
05583
05584 CONNECTION_LOCK (connection);
05585
05586 retval = _dbus_object_tree_list_registered_and_unlock (connection->objects,
05587 (const char **) decomposed_path,
05588 child_entries);
05589 dbus_free_string_array (decomposed_path);
05590
05591 return retval;
05592 }
05593
05594 static DBusDataSlotAllocator slot_allocator;
05595 _DBUS_DEFINE_GLOBAL_LOCK (connection_slots);
05596
05611 dbus_bool_t
05612 dbus_connection_allocate_data_slot (dbus_int32_t *slot_p)
05613 {
05614 return _dbus_data_slot_allocator_alloc (&slot_allocator,
05615 &_DBUS_LOCK_NAME (connection_slots),
05616 slot_p);
05617 }
05618
05630 void
05631 dbus_connection_free_data_slot (dbus_int32_t *slot_p)
05632 {
05633 _dbus_return_if_fail (*slot_p >= 0);
05634
05635 _dbus_data_slot_allocator_free (&slot_allocator, slot_p);
05636 }
05637
05651 dbus_bool_t
05652 dbus_connection_set_data (DBusConnection *connection,
05653 dbus_int32_t slot,
05654 void *data,
05655 DBusFreeFunction free_data_func)
05656 {
05657 DBusFreeFunction old_free_func;
05658 void *old_data;
05659 dbus_bool_t retval;
05660
05661 _dbus_return_val_if_fail (connection != NULL, FALSE);
05662 _dbus_return_val_if_fail (slot >= 0, FALSE);
05663
05664 CONNECTION_LOCK (connection);
05665
05666 retval = _dbus_data_slot_list_set (&slot_allocator,
05667 &connection->slot_list,
05668 slot, data, free_data_func,
05669 &old_free_func, &old_data);
05670
05671 CONNECTION_UNLOCK (connection);
05672
05673 if (retval)
05674 {
05675
05676 if (old_free_func)
05677 (* old_free_func) (old_data);
05678 }
05679
05680 return retval;
05681 }
05682
05691 void*
05692 dbus_connection_get_data (DBusConnection *connection,
05693 dbus_int32_t slot)
05694 {
05695 void *res;
05696
05697 _dbus_return_val_if_fail (connection != NULL, NULL);
05698
05699 CONNECTION_LOCK (connection);
05700
05701 res = _dbus_data_slot_list_get (&slot_allocator,
05702 &connection->slot_list,
05703 slot);
05704
05705 CONNECTION_UNLOCK (connection);
05706
05707 return res;
05708 }
05709
05716 void
05717 dbus_connection_set_change_sigpipe (dbus_bool_t will_modify_sigpipe)
05718 {
05719 _dbus_modify_sigpipe = will_modify_sigpipe != FALSE;
05720 }
05721
05730 void
05731 dbus_connection_set_max_message_size (DBusConnection *connection,
05732 long size)
05733 {
05734 _dbus_return_if_fail (connection != NULL);
05735
05736 CONNECTION_LOCK (connection);
05737 _dbus_transport_set_max_message_size (connection->transport,
05738 size);
05739 CONNECTION_UNLOCK (connection);
05740 }
05741
05748 long
05749 dbus_connection_get_max_message_size (DBusConnection *connection)
05750 {
05751 long res;
05752
05753 _dbus_return_val_if_fail (connection != NULL, 0);
05754
05755 CONNECTION_LOCK (connection);
05756 res = _dbus_transport_get_max_message_size (connection->transport);
05757 CONNECTION_UNLOCK (connection);
05758 return res;
05759 }
05760
05786 void
05787 dbus_connection_set_max_received_size (DBusConnection *connection,
05788 long size)
05789 {
05790 _dbus_return_if_fail (connection != NULL);
05791
05792 CONNECTION_LOCK (connection);
05793 _dbus_transport_set_max_received_size (connection->transport,
05794 size);
05795 CONNECTION_UNLOCK (connection);
05796 }
05797
05804 long
05805 dbus_connection_get_max_received_size (DBusConnection *connection)
05806 {
05807 long res;
05808
05809 _dbus_return_val_if_fail (connection != NULL, 0);
05810
05811 CONNECTION_LOCK (connection);
05812 res = _dbus_transport_get_max_received_size (connection->transport);
05813 CONNECTION_UNLOCK (connection);
05814 return res;
05815 }
05816
05827 long
05828 dbus_connection_get_outgoing_size (DBusConnection *connection)
05829 {
05830 long res;
05831
05832 _dbus_return_val_if_fail (connection != NULL, 0);
05833
05834 CONNECTION_LOCK (connection);
05835 res = _dbus_counter_get_value (connection->outgoing_counter);
05836 CONNECTION_UNLOCK (connection);
05837 return res;
05838 }
05839