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527 lines
26 KiB
C++
527 lines
26 KiB
C++
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/* dbus-connection.h DBusConnection object
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*
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* Copyright (C) 2002, 2003 Red Hat Inc.
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*
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* Licensed under the Academic Free License version 2.1
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#if !defined (DBUS_INSIDE_DBUS_H) && !defined (DBUS_COMPILATION)
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#error "Only <dbus/dbus.h> can be included directly, this file may disappear or change contents."
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#endif
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#ifndef DBUS_CONNECTION_H
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#define DBUS_CONNECTION_H
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#include <dbus/dbus-errors.h>
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#include <dbus/dbus-macros.h>
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#include <dbus/dbus-memory.h>
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#include <dbus/dbus-message.h>
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#include <dbus/dbus-shared.h>
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DBUS_BEGIN_DECLS
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/**
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* @addtogroup DBusConnection
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* @{
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*/
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/* documented in dbus-watch.c */
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typedef struct DBusWatch DBusWatch;
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/* documented in dbus-timeout.c */
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typedef struct DBusTimeout DBusTimeout;
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/** Opaque type representing preallocated resources so a message can be sent without further memory allocation. */
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typedef struct DBusPreallocatedSend DBusPreallocatedSend;
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/** Opaque type representing a method call that has not yet received a reply. */
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typedef struct DBusPendingCall DBusPendingCall;
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/** Opaque type representing a connection to a remote application and associated incoming/outgoing message queues. */
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typedef struct DBusConnection DBusConnection;
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/** Set of functions that must be implemented to handle messages sent to a particular object path. */
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typedef struct DBusObjectPathVTable DBusObjectPathVTable;
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/**
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* Indicates the status of a #DBusWatch.
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*/
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typedef enum
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{
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DBUS_WATCH_READABLE = 1 << 0, /**< As in POLLIN */
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DBUS_WATCH_WRITABLE = 1 << 1, /**< As in POLLOUT */
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DBUS_WATCH_ERROR = 1 << 2, /**< As in POLLERR (can't watch for
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* this, but can be present in
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* current state passed to
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* dbus_watch_handle()).
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*/
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DBUS_WATCH_HANGUP = 1 << 3 /**< As in POLLHUP (can't watch for
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* it, but can be present in current
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* state passed to
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* dbus_watch_handle()).
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*/
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/* Internal to libdbus, there is also _DBUS_WATCH_NVAL in dbus-watch.h */
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} DBusWatchFlags;
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/**
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* Indicates the status of incoming data on a #DBusConnection. This determines whether
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* dbus_connection_dispatch() needs to be called.
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*/
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typedef enum
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{
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DBUS_DISPATCH_DATA_REMAINS, /**< There is more data to potentially convert to messages. */
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DBUS_DISPATCH_COMPLETE, /**< All currently available data has been processed. */
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DBUS_DISPATCH_NEED_MEMORY /**< More memory is needed to continue. */
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} DBusDispatchStatus;
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/** Called when libdbus needs a new watch to be monitored by the main
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* loop. Returns #FALSE if it lacks enough memory to add the
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* watch. Set by dbus_connection_set_watch_functions() or
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* dbus_server_set_watch_functions().
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*/
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typedef dbus_bool_t (* DBusAddWatchFunction) (DBusWatch *watch,
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void *data);
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/** Called when dbus_watch_get_enabled() may return a different value
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* than it did before. Set by dbus_connection_set_watch_functions()
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* or dbus_server_set_watch_functions().
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*/
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typedef void (* DBusWatchToggledFunction) (DBusWatch *watch,
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void *data);
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/** Called when libdbus no longer needs a watch to be monitored by the
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* main loop. Set by dbus_connection_set_watch_functions() or
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* dbus_server_set_watch_functions().
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*/
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typedef void (* DBusRemoveWatchFunction) (DBusWatch *watch,
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void *data);
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/** Called when libdbus needs a new timeout to be monitored by the main
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* loop. Returns #FALSE if it lacks enough memory to add the
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* watch. Set by dbus_connection_set_timeout_functions() or
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* dbus_server_set_timeout_functions().
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*/
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typedef dbus_bool_t (* DBusAddTimeoutFunction) (DBusTimeout *timeout,
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void *data);
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/** Called when dbus_timeout_get_enabled() may return a different
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* value than it did before.
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* Set by dbus_connection_set_timeout_functions() or
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* dbus_server_set_timeout_functions().
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*/
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typedef void (* DBusTimeoutToggledFunction) (DBusTimeout *timeout,
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void *data);
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/** Called when libdbus no longer needs a timeout to be monitored by the
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* main loop. Set by dbus_connection_set_timeout_functions() or
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* dbus_server_set_timeout_functions().
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*/
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typedef void (* DBusRemoveTimeoutFunction) (DBusTimeout *timeout,
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void *data);
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/** Called when the return value of dbus_connection_get_dispatch_status()
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* may have changed. Set with dbus_connection_set_dispatch_status_function().
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*/
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typedef void (* DBusDispatchStatusFunction) (DBusConnection *connection,
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DBusDispatchStatus new_status,
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void *data);
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/**
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* Called when the main loop's thread should be notified that there's now work
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* to do. Set with dbus_connection_set_wakeup_main_function().
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*/
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typedef void (* DBusWakeupMainFunction) (void *data);
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/**
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* Called during authentication to check whether the given UNIX user
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* ID is allowed to connect, if the client tried to auth as a UNIX
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* user ID. Normally on Windows this would never happen. Set with
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* dbus_connection_set_unix_user_function().
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*/
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typedef dbus_bool_t (* DBusAllowUnixUserFunction) (DBusConnection *connection,
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unsigned long uid,
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void *data);
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/**
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* Called during authentication to check whether the given Windows user
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* ID is allowed to connect, if the client tried to auth as a Windows
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* user ID. Normally on UNIX this would never happen. Set with
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* dbus_connection_set_windows_user_function().
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*/
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typedef dbus_bool_t (* DBusAllowWindowsUserFunction) (DBusConnection *connection,
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const char *user_sid,
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void *data);
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/**
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* Called when a pending call now has a reply available. Set with
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* dbus_pending_call_set_notify().
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*/
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typedef void (* DBusPendingCallNotifyFunction) (DBusPendingCall *pending,
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void *user_data);
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/**
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* Called when a message needs to be handled. The result indicates whether or
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* not more handlers should be run. Set with dbus_connection_add_filter().
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*/
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typedef DBusHandlerResult (* DBusHandleMessageFunction) (DBusConnection *connection,
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DBusMessage *message,
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void *user_data);
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DBUS_EXPORT
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DBusConnection* dbus_connection_open (const char *address,
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DBusError *error);
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DBUS_EXPORT
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DBusConnection* dbus_connection_open_private (const char *address,
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DBusError *error);
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DBUS_EXPORT
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DBusConnection* dbus_connection_ref (DBusConnection *connection);
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DBUS_EXPORT
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void dbus_connection_unref (DBusConnection *connection);
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DBUS_EXPORT
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void dbus_connection_close (DBusConnection *connection);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_get_is_connected (DBusConnection *connection);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_get_is_authenticated (DBusConnection *connection);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_get_is_anonymous (DBusConnection *connection);
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DBUS_EXPORT
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char* dbus_connection_get_server_id (DBusConnection *connection);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_can_send_type (DBusConnection *connection,
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int type);
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DBUS_EXPORT
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void dbus_connection_set_exit_on_disconnect (DBusConnection *connection,
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dbus_bool_t exit_on_disconnect);
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DBUS_EXPORT
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void dbus_connection_flush (DBusConnection *connection);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_read_write_dispatch (DBusConnection *connection,
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int timeout_milliseconds);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_read_write (DBusConnection *connection,
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int timeout_milliseconds);
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DBUS_EXPORT
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DBusMessage* dbus_connection_borrow_message (DBusConnection *connection);
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DBUS_EXPORT
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void dbus_connection_return_message (DBusConnection *connection,
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DBusMessage *message);
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DBUS_EXPORT
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void dbus_connection_steal_borrowed_message (DBusConnection *connection,
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DBusMessage *message);
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DBUS_EXPORT
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DBusMessage* dbus_connection_pop_message (DBusConnection *connection);
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DBUS_EXPORT
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DBusDispatchStatus dbus_connection_get_dispatch_status (DBusConnection *connection);
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DBUS_EXPORT
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DBusDispatchStatus dbus_connection_dispatch (DBusConnection *connection);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_has_messages_to_send (DBusConnection *connection);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_send (DBusConnection *connection,
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DBusMessage *message,
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dbus_uint32_t *client_serial);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_send_with_reply (DBusConnection *connection,
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DBusMessage *message,
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DBusPendingCall **pending_return,
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int timeout_milliseconds);
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DBUS_EXPORT
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DBusMessage * dbus_connection_send_with_reply_and_block (DBusConnection *connection,
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DBusMessage *message,
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int timeout_milliseconds,
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DBusError *error);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_set_watch_functions (DBusConnection *connection,
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DBusAddWatchFunction add_function,
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DBusRemoveWatchFunction remove_function,
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DBusWatchToggledFunction toggled_function,
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void *data,
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DBusFreeFunction free_data_function);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_set_timeout_functions (DBusConnection *connection,
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DBusAddTimeoutFunction add_function,
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DBusRemoveTimeoutFunction remove_function,
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DBusTimeoutToggledFunction toggled_function,
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void *data,
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DBusFreeFunction free_data_function);
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DBUS_EXPORT
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void dbus_connection_set_wakeup_main_function (DBusConnection *connection,
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DBusWakeupMainFunction wakeup_main_function,
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void *data,
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DBusFreeFunction free_data_function);
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DBUS_EXPORT
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void dbus_connection_set_dispatch_status_function (DBusConnection *connection,
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DBusDispatchStatusFunction function,
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void *data,
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DBusFreeFunction free_data_function);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_get_unix_user (DBusConnection *connection,
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unsigned long *uid);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_get_unix_process_id (DBusConnection *connection,
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unsigned long *pid);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_get_adt_audit_session_data (DBusConnection *connection,
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void **data,
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dbus_int32_t *data_size);
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DBUS_EXPORT
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void dbus_connection_set_unix_user_function (DBusConnection *connection,
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DBusAllowUnixUserFunction function,
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void *data,
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DBusFreeFunction free_data_function);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_get_windows_user (DBusConnection *connection,
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char **windows_sid_p);
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DBUS_EXPORT
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void dbus_connection_set_windows_user_function (DBusConnection *connection,
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DBusAllowWindowsUserFunction function,
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void *data,
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DBusFreeFunction free_data_function);
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DBUS_EXPORT
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void dbus_connection_set_allow_anonymous (DBusConnection *connection,
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dbus_bool_t value);
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DBUS_EXPORT
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void dbus_connection_set_route_peer_messages (DBusConnection *connection,
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dbus_bool_t value);
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/* Filters */
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DBUS_EXPORT
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dbus_bool_t dbus_connection_add_filter (DBusConnection *connection,
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DBusHandleMessageFunction function,
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void *user_data,
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DBusFreeFunction free_data_function);
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DBUS_EXPORT
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void dbus_connection_remove_filter (DBusConnection *connection,
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DBusHandleMessageFunction function,
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void *user_data);
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/* Other */
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DBUS_EXPORT
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dbus_bool_t dbus_connection_allocate_data_slot (dbus_int32_t *slot_p);
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DBUS_EXPORT
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void dbus_connection_free_data_slot (dbus_int32_t *slot_p);
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DBUS_EXPORT
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dbus_bool_t dbus_connection_set_data (DBusConnection *connection,
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dbus_int32_t slot,
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void *data,
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DBusFreeFunction free_data_func);
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DBUS_EXPORT
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void* dbus_connection_get_data (DBusConnection *connection,
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dbus_int32_t slot);
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DBUS_EXPORT
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void dbus_connection_set_change_sigpipe (dbus_bool_t will_modify_sigpipe);
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DBUS_EXPORT
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void dbus_connection_set_max_message_size (DBusConnection *connection,
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long size);
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DBUS_EXPORT
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long dbus_connection_get_max_message_size (DBusConnection *connection);
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DBUS_EXPORT
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void dbus_connection_set_max_received_size (DBusConnection *connection,
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long size);
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DBUS_EXPORT
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long dbus_connection_get_max_received_size (DBusConnection *connection);
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DBUS_EXPORT
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void dbus_connection_set_max_message_unix_fds (DBusConnection *connection,
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long n);
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DBUS_EXPORT
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long dbus_connection_get_max_message_unix_fds (DBusConnection *connection);
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DBUS_EXPORT
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void dbus_connection_set_max_received_unix_fds(DBusConnection *connection,
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long n);
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|
|
DBUS_EXPORT
|
||
|
|
long dbus_connection_get_max_received_unix_fds(DBusConnection *connection);
|
||
|
|
|
||
|
|
DBUS_EXPORT
|
||
|
|
long dbus_connection_get_outgoing_size (DBusConnection *connection);
|
||
|
|
DBUS_EXPORT
|
||
|
|
long dbus_connection_get_outgoing_unix_fds (DBusConnection *connection);
|
||
|
|
|
||
|
|
DBUS_EXPORT
|
||
|
|
DBusPreallocatedSend* dbus_connection_preallocate_send (DBusConnection *connection);
|
||
|
|
DBUS_EXPORT
|
||
|
|
void dbus_connection_free_preallocated_send (DBusConnection *connection,
|
||
|
|
DBusPreallocatedSend *preallocated);
|
||
|
|
DBUS_EXPORT
|
||
|
|
void dbus_connection_send_preallocated (DBusConnection *connection,
|
||
|
|
DBusPreallocatedSend *preallocated,
|
||
|
|
DBusMessage *message,
|
||
|
|
dbus_uint32_t *client_serial);
|
||
|
|
|
||
|
|
|
||
|
|
/* Object tree functionality */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Called when a #DBusObjectPathVTable is unregistered (or its connection is freed).
|
||
|
|
* Found in #DBusObjectPathVTable.
|
||
|
|
*/
|
||
|
|
typedef void (* DBusObjectPathUnregisterFunction) (DBusConnection *connection,
|
||
|
|
void *user_data);
|
||
|
|
/**
|
||
|
|
* Called when a message is sent to a registered object path. Found in
|
||
|
|
* #DBusObjectPathVTable which is registered with dbus_connection_register_object_path()
|
||
|
|
* or dbus_connection_register_fallback().
|
||
|
|
*/
|
||
|
|
typedef DBusHandlerResult (* DBusObjectPathMessageFunction) (DBusConnection *connection,
|
||
|
|
DBusMessage *message,
|
||
|
|
void *user_data);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Virtual table that must be implemented to handle a portion of the
|
||
|
|
* object path hierarchy. Attach the vtable to a particular path using
|
||
|
|
* dbus_connection_register_object_path() or
|
||
|
|
* dbus_connection_register_fallback().
|
||
|
|
*/
|
||
|
|
struct DBusObjectPathVTable
|
||
|
|
{
|
||
|
|
DBusObjectPathUnregisterFunction unregister_function; /**< Function to unregister this handler */
|
||
|
|
DBusObjectPathMessageFunction message_function; /**< Function to handle messages */
|
||
|
|
|
||
|
|
void (* dbus_internal_pad1) (void *); /**< Reserved for future expansion */
|
||
|
|
void (* dbus_internal_pad2) (void *); /**< Reserved for future expansion */
|
||
|
|
void (* dbus_internal_pad3) (void *); /**< Reserved for future expansion */
|
||
|
|
void (* dbus_internal_pad4) (void *); /**< Reserved for future expansion */
|
||
|
|
};
|
||
|
|
|
||
|
|
DBUS_EXPORT
|
||
|
|
dbus_bool_t dbus_connection_try_register_object_path (DBusConnection *connection,
|
||
|
|
const char *path,
|
||
|
|
const DBusObjectPathVTable *vtable,
|
||
|
|
void *user_data,
|
||
|
|
DBusError *error);
|
||
|
|
|
||
|
|
DBUS_EXPORT
|
||
|
|
dbus_bool_t dbus_connection_register_object_path (DBusConnection *connection,
|
||
|
|
const char *path,
|
||
|
|
const DBusObjectPathVTable *vtable,
|
||
|
|
void *user_data);
|
||
|
|
|
||
|
|
DBUS_EXPORT
|
||
|
|
dbus_bool_t dbus_connection_try_register_fallback (DBusConnection *connection,
|
||
|
|
const char *path,
|
||
|
|
const DBusObjectPathVTable *vtable,
|
||
|
|
void *user_data,
|
||
|
|
DBusError *error);
|
||
|
|
|
||
|
|
DBUS_EXPORT
|
||
|
|
dbus_bool_t dbus_connection_register_fallback (DBusConnection *connection,
|
||
|
|
const char *path,
|
||
|
|
const DBusObjectPathVTable *vtable,
|
||
|
|
void *user_data);
|
||
|
|
DBUS_EXPORT
|
||
|
|
dbus_bool_t dbus_connection_unregister_object_path (DBusConnection *connection,
|
||
|
|
const char *path);
|
||
|
|
|
||
|
|
DBUS_EXPORT
|
||
|
|
dbus_bool_t dbus_connection_get_object_path_data (DBusConnection *connection,
|
||
|
|
const char *path,
|
||
|
|
void **data_p);
|
||
|
|
|
||
|
|
DBUS_EXPORT
|
||
|
|
dbus_bool_t dbus_connection_list_registered (DBusConnection *connection,
|
||
|
|
const char *parent_path,
|
||
|
|
char ***child_entries);
|
||
|
|
|
||
|
|
DBUS_EXPORT
|
||
|
|
dbus_bool_t dbus_connection_get_unix_fd (DBusConnection *connection,
|
||
|
|
int *fd);
|
||
|
|
DBUS_EXPORT
|
||
|
|
dbus_bool_t dbus_connection_get_socket (DBusConnection *connection,
|
||
|
|
int *fd);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Clear a variable or struct member that contains a #DBusConnection.
|
||
|
|
* If it does not contain #NULL, the connection that was previously
|
||
|
|
* there is unreferenced with dbus_connection_unref().
|
||
|
|
*
|
||
|
|
* For example, this function and the similar functions for
|
||
|
|
* other reference-counted types can be used in code like this:
|
||
|
|
*
|
||
|
|
* @code
|
||
|
|
* DBusConnection *conn = NULL;
|
||
|
|
* struct { ...; DBusMessage *m; ... } *larger_structure = ...;
|
||
|
|
*
|
||
|
|
* ... code that might set conn or m to be non-NULL ...
|
||
|
|
*
|
||
|
|
* dbus_clear_connection (&conn);
|
||
|
|
* dbus_clear_message (&larger_structure->m);
|
||
|
|
* @endcode
|
||
|
|
*
|
||
|
|
* @param pointer_to_connection A pointer to a variable or struct member.
|
||
|
|
* pointer_to_connection must not be #NULL, but *pointer_to_connection
|
||
|
|
* may be #NULL.
|
||
|
|
*/
|
||
|
|
static inline void
|
||
|
|
dbus_clear_connection (DBusConnection **pointer_to_connection)
|
||
|
|
{
|
||
|
|
_dbus_clear_pointer_impl (DBusConnection, pointer_to_connection,
|
||
|
|
dbus_connection_unref);
|
||
|
|
}
|
||
|
|
|
||
|
|
/** @} */
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @addtogroup DBusWatch
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef DBUS_DISABLE_DEPRECATED
|
||
|
|
DBUS_EXPORT
|
||
|
|
DBUS_DEPRECATED int dbus_watch_get_fd (DBusWatch *watch);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
DBUS_EXPORT
|
||
|
|
int dbus_watch_get_unix_fd (DBusWatch *watch);
|
||
|
|
DBUS_EXPORT
|
||
|
|
int dbus_watch_get_socket (DBusWatch *watch);
|
||
|
|
DBUS_EXPORT
|
||
|
|
unsigned int dbus_watch_get_flags (DBusWatch *watch);
|
||
|
|
DBUS_EXPORT
|
||
|
|
void* dbus_watch_get_data (DBusWatch *watch);
|
||
|
|
DBUS_EXPORT
|
||
|
|
void dbus_watch_set_data (DBusWatch *watch,
|
||
|
|
void *data,
|
||
|
|
DBusFreeFunction free_data_function);
|
||
|
|
DBUS_EXPORT
|
||
|
|
dbus_bool_t dbus_watch_handle (DBusWatch *watch,
|
||
|
|
unsigned int flags);
|
||
|
|
DBUS_EXPORT
|
||
|
|
dbus_bool_t dbus_watch_get_enabled (DBusWatch *watch);
|
||
|
|
|
||
|
|
/** @} */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @addtogroup DBusTimeout
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
DBUS_EXPORT
|
||
|
|
int dbus_timeout_get_interval (DBusTimeout *timeout);
|
||
|
|
DBUS_EXPORT
|
||
|
|
void* dbus_timeout_get_data (DBusTimeout *timeout);
|
||
|
|
DBUS_EXPORT
|
||
|
|
void dbus_timeout_set_data (DBusTimeout *timeout,
|
||
|
|
void *data,
|
||
|
|
DBusFreeFunction free_data_function);
|
||
|
|
DBUS_EXPORT
|
||
|
|
dbus_bool_t dbus_timeout_handle (DBusTimeout *timeout);
|
||
|
|
DBUS_EXPORT
|
||
|
|
dbus_bool_t dbus_timeout_get_enabled (DBusTimeout *timeout);
|
||
|
|
|
||
|
|
/** @} */
|
||
|
|
|
||
|
|
DBUS_END_DECLS
|
||
|
|
|
||
|
|
#endif /* DBUS_CONNECTION_H */
|