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/* GDBus - GLib D-Bus Library * * Copyright (C) 2008-2010 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General * Public License along with this library; if not, see <http://www.gnu.org/licenses/>. * * Author: David Zeuthen <davidz@redhat.com> */ #ifndef __G_DBUS_CONNECTION_H__ #define __G_DBUS_CONNECTION_H__ #if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION) #error "Only <gio/gio.h> can be included directly." #endif #include <gio/giotypes.h> G_BEGIN_DECLS #define G_TYPE_DBUS_CONNECTION (g_dbus_connection_get_type ()) #define G_DBUS_CONNECTION(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_DBUS_CONNECTION, GDBusConnection)) #define G_IS_DBUS_CONNECTION(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_DBUS_CONNECTION)) GLIB_AVAILABLE_IN_ALL GType g_dbus_connection_get_type (void) G_GNUC_CONST; /* ---------------------------------------------------------------------------------------------------- */ GLIB_AVAILABLE_IN_ALL void g_bus_get (GBusType bus_type, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data); GLIB_AVAILABLE_IN_ALL GDBusConnection *g_bus_get_finish (GAsyncResult *res, GError **error); GLIB_AVAILABLE_IN_ALL GDBusConnection *g_bus_get_sync (GBusType bus_type, GCancellable *cancellable, GError **error); /* ---------------------------------------------------------------------------------------------------- */ GLIB_AVAILABLE_IN_ALL void g_dbus_connection_new (GIOStream *stream, const gchar *guid, GDBusConnectionFlags flags, GDBusAuthObserver *observer, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data); GLIB_AVAILABLE_IN_ALL GDBusConnection *g_dbus_connection_new_finish (GAsyncResult *res, GError **error); GLIB_AVAILABLE_IN_ALL GDBusConnection *g_dbus_connection_new_sync (GIOStream *stream, const gchar *guid, GDBusConnectionFlags flags, GDBusAuthObserver *observer, GCancellable *cancellable, GError **error); GLIB_AVAILABLE_IN_ALL void g_dbus_connection_new_for_address (const gchar *address, GDBusConnectionFlags flags, GDBusAuthObserver *observer, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data); GLIB_AVAILABLE_IN_ALL GDBusConnection *g_dbus_connection_new_for_address_finish (GAsyncResult *res, GError **error); GLIB_AVAILABLE_IN_ALL GDBusConnection *g_dbus_connection_new_for_address_sync (const gchar *address, GDBusConnectionFlags flags, GDBusAuthObserver *observer, GCancellable *cancellable, GError **error); /* ---------------------------------------------------------------------------------------------------- */ GLIB_AVAILABLE_IN_ALL void g_dbus_connection_start_message_processing (GDBusConnection *connection); GLIB_AVAILABLE_IN_ALL gboolean g_dbus_connection_is_closed (GDBusConnection *connection); GLIB_AVAILABLE_IN_ALL GIOStream *g_dbus_connection_get_stream (GDBusConnection *connection); GLIB_AVAILABLE_IN_ALL const gchar *g_dbus_connection_get_guid (GDBusConnection *connection); GLIB_AVAILABLE_IN_ALL const gchar *g_dbus_connection_get_unique_name (GDBusConnection *connection); GLIB_AVAILABLE_IN_ALL GCredentials *g_dbus_connection_get_peer_credentials (GDBusConnection *connection); GLIB_AVAILABLE_IN_2_34 guint32 g_dbus_connection_get_last_serial (GDBusConnection *connection); GLIB_AVAILABLE_IN_ALL gboolean g_dbus_connection_get_exit_on_close (GDBusConnection *connection); GLIB_AVAILABLE_IN_ALL void g_dbus_connection_set_exit_on_close (GDBusConnection *connection, gboolean exit_on_close); GLIB_AVAILABLE_IN_ALL GDBusCapabilityFlags g_dbus_connection_get_capabilities (GDBusConnection *connection); GLIB_AVAILABLE_IN_2_60 GDBusConnectionFlags g_dbus_connection_get_flags (GDBusConnection *connection); /* ---------------------------------------------------------------------------------------------------- */ GLIB_AVAILABLE_IN_ALL void g_dbus_connection_close (GDBusConnection *connection, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data); GLIB_AVAILABLE_IN_ALL gboolean g_dbus_connection_close_finish (GDBusConnection *connection, GAsyncResult *res, GError **error); GLIB_AVAILABLE_IN_ALL gboolean g_dbus_connection_close_sync (GDBusConnection *connection, GCancellable *cancellable, GError **error); /* ---------------------------------------------------------------------------------------------------- */ GLIB_AVAILABLE_IN_ALL void g_dbus_connection_flush (GDBusConnection *connection, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data); GLIB_AVAILABLE_IN_ALL gboolean g_dbus_connection_flush_finish (GDBusConnection *connection, GAsyncResult *res, GError **error); GLIB_AVAILABLE_IN_ALL gboolean g_dbus_connection_flush_sync (GDBusConnection *connection, GCancellable *cancellable, GError **error); /* ---------------------------------------------------------------------------------------------------- */ GLIB_AVAILABLE_IN_ALL gboolean g_dbus_connection_send_message (GDBusConnection *connection, GDBusMessage *message, GDBusSendMessageFlags flags, volatile guint32 *out_serial, GError **error); GLIB_AVAILABLE_IN_ALL void g_dbus_connection_send_message_with_reply (GDBusConnection *connection, GDBusMessage *message, GDBusSendMessageFlags flags, gint timeout_msec, volatile guint32 *out_serial, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data); GLIB_AVAILABLE_IN_ALL GDBusMessage *g_dbus_connection_send_message_with_reply_finish (GDBusConnection *connection, GAsyncResult *res, GError **error); GLIB_AVAILABLE_IN_ALL GDBusMessage *g_dbus_connection_send_message_with_reply_sync (GDBusConnection *connection, GDBusMessage *message, GDBusSendMessageFlags flags, gint timeout_msec, volatile guint32 *out_serial, GCancellable *cancellable, GError **error); /* ---------------------------------------------------------------------------------------------------- */ GLIB_AVAILABLE_IN_ALL gboolean g_dbus_connection_emit_signal (GDBusConnection *connection, const gchar *destination_bus_name, const gchar *object_path, const gchar *interface_name, const gchar *signal_name, GVariant *parameters, GError **error); GLIB_AVAILABLE_IN_ALL void g_dbus_connection_call (GDBusConnection *connection, const gchar *bus_name, const gchar *object_path, const gchar *interface_name, const gchar *method_name, GVariant *parameters, const GVariantType *reply_type, GDBusCallFlags flags, gint timeout_msec, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data); GLIB_AVAILABLE_IN_ALL GVariant *g_dbus_connection_call_finish (GDBusConnection *connection, GAsyncResult *res, GError **error); GLIB_AVAILABLE_IN_ALL GVariant *g_dbus_connection_call_sync (GDBusConnection *connection, const gchar *bus_name, const gchar *object_path, const gchar *interface_name, const gchar *method_name, GVariant *parameters, const GVariantType *reply_type, GDBusCallFlags flags, gint timeout_msec, GCancellable *cancellable, GError **error); GLIB_AVAILABLE_IN_2_30 void g_dbus_connection_call_with_unix_fd_list (GDBusConnection *connection, const gchar *bus_name, const gchar *object_path, const gchar *interface_name, const gchar *method_name, GVariant *parameters, const GVariantType *reply_type, GDBusCallFlags flags, gint timeout_msec, GUnixFDList *fd_list, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data); GLIB_AVAILABLE_IN_2_30 GVariant *g_dbus_connection_call_with_unix_fd_list_finish (GDBusConnection *connection, GUnixFDList **out_fd_list, GAsyncResult *res, GError **error); GLIB_AVAILABLE_IN_2_30 GVariant *g_dbus_connection_call_with_unix_fd_list_sync (GDBusConnection *connection, const gchar *bus_name, const gchar *object_path, const gchar *interface_name, const gchar *method_name, GVariant *parameters, const GVariantType *reply_type, GDBusCallFlags flags, gint timeout_msec, GUnixFDList *fd_list, GUnixFDList **out_fd_list, GCancellable *cancellable, GError **error); /* ---------------------------------------------------------------------------------------------------- */ /** * GDBusInterfaceMethodCallFunc: * @connection: A #GDBusConnection. * @sender: The unique bus name of the remote caller. * @object_path: The object path that the method was invoked on. * @interface_name: The D-Bus interface name the method was invoked on. * @method_name: The name of the method that was invoked. * @parameters: A #GVariant tuple with parameters. * @invocation: (transfer full): A #GDBusMethodInvocation object that must be used to return a value or error. * @user_data: The @user_data #gpointer passed to g_dbus_connection_register_object(). * * The type of the @method_call function in #GDBusInterfaceVTable. * * Since: 2.26 */ typedef void (*GDBusInterfaceMethodCallFunc) (GDBusConnection *connection, const gchar *sender, const gchar *object_path, const gchar *interface_name, const gchar *method_name, GVariant *parameters, GDBusMethodInvocation *invocation, gpointer user_data); /** * GDBusInterfaceGetPropertyFunc: * @connection: A #GDBusConnection. * @sender: The unique bus name of the remote caller. * @object_path: The object path that the method was invoked on. * @interface_name: The D-Bus interface name for the property. * @property_name: The name of the property to get the value of. * @error: Return location for error. * @user_data: The @user_data #gpointer passed to g_dbus_connection_register_object(). * * The type of the @get_property function in #GDBusInterfaceVTable. * * Returns: A #GVariant with the value for @property_name or %NULL if * @error is set. If the returned #GVariant is floating, it is * consumed - otherwise its reference count is decreased by one. * * Since: 2.26 */ typedef GVariant *(*GDBusInterfaceGetPropertyFunc) (GDBusConnection *connection, const gchar *sender, const gchar *object_path, const gchar *interface_name, const gchar *property_name, GError **error, gpointer user_data); /** * GDBusInterfaceSetPropertyFunc: * @connection: A #GDBusConnection. * @sender: The unique bus name of the remote caller. * @object_path: The object path that the method was invoked on. * @interface_name: The D-Bus interface name for the property. * @property_name: The name of the property to get the value of. * @value: The value to set the property to. * @error: Return location for error. * @user_data: The @user_data #gpointer passed to g_dbus_connection_register_object(). * * The type of the @set_property function in #GDBusInterfaceVTable. * * Returns: %TRUE if the property was set to @value, %FALSE if @error is set. * * Since: 2.26 */ typedef gboolean (*GDBusInterfaceSetPropertyFunc) (GDBusConnection *connection, const gchar *sender, const gchar *object_path, const gchar *interface_name, const gchar *property_name, GVariant *value, GError **error, gpointer user_data); /** * GDBusInterfaceVTable: * @method_call: Function for handling incoming method calls. * @get_property: Function for getting a property. * @set_property: Function for setting a property. * * Virtual table for handling properties and method calls for a D-Bus * interface. * * Since 2.38, if you want to handle getting/setting D-Bus properties * asynchronously, give %NULL as your get_property() or set_property() * function. The D-Bus call will be directed to your @method_call function, * with the provided @interface_name set to "org.freedesktop.DBus.Properties". * * Ownership of the #GDBusMethodInvocation object passed to the * method_call() function is transferred to your handler; you must * call one of the methods of #GDBusMethodInvocation to return a reply * (possibly empty), or an error. These functions also take ownership * of the passed-in invocation object, so unless the invocation * object has otherwise been referenced, it will be then be freed. * Calling one of these functions may be done within your * method_call() implementation but it also can be done at a later * point to handle the method asynchronously. * * The usual checks on the validity of the calls is performed. For * `Get` calls, an error is automatically returned if the property does * not exist or the permissions do not allow access. The same checks are * performed for `Set` calls, and the provided value is also checked for * being the correct type. * * For both `Get` and `Set` calls, the #GDBusMethodInvocation * passed to the @method_call handler can be queried with * g_dbus_method_invocation_get_property_info() to get a pointer * to the #GDBusPropertyInfo of the property. * * If you have readable properties specified in your interface info, * you must ensure that you either provide a non-%NULL @get_property() * function or provide implementations of both the `Get` and `GetAll` * methods on org.freedesktop.DBus.Properties interface in your @method_call * function. Note that the required return type of the `Get` call is * `(v)`, not the type of the property. `GetAll` expects a return value * of type `a{sv}`. * * If you have writable properties specified in your interface info, * you must ensure that you either provide a non-%NULL @set_property() * function or provide an implementation of the `Set` call. If implementing * the call, you must return the value of type %G_VARIANT_TYPE_UNIT. * * Since: 2.26 */ struct _GDBusInterfaceVTable { GDBusInterfaceMethodCallFunc method_call; GDBusInterfaceGetPropertyFunc get_property; GDBusInterfaceSetPropertyFunc set_property; /*< private >*/ /* Padding for future expansion - also remember to update * gdbusconnection.c:_g_dbus_interface_vtable_copy() when * changing this. */ gpointer padding[8]; }; GLIB_AVAILABLE_IN_ALL guint g_dbus_connection_register_object (GDBusConnection *connection, const gchar *object_path, GDBusInterfaceInfo *interface_info, const GDBusInterfaceVTable *vtable, gpointer user_data, GDestroyNotify user_data_free_func, GError **error); GLIB_AVAILABLE_IN_2_46 guint g_dbus_connection_register_object_with_closures (GDBusConnection *connection, const gchar *object_path, GDBusInterfaceInfo *interface_info, GClosure *method_call_closure, GClosure *get_property_closure, GClosure *set_property_closure, GError **error); GLIB_AVAILABLE_IN_ALL gboolean g_dbus_connection_unregister_object (GDBusConnection *connection, guint registration_id); /* ---------------------------------------------------------------------------------------------------- */ /** * GDBusSubtreeEnumerateFunc: * @connection: A #GDBusConnection. * @sender: The unique bus name of the remote caller. * @object_path: The object path that was registered with g_dbus_connection_register_subtree(). * @user_data: The @user_data #gpointer passed to g_dbus_connection_register_subtree(). * * The type of the @enumerate function in #GDBusSubtreeVTable. * * This function is called when generating introspection data and also * when preparing to dispatch incoming messages in the event that the * %G_DBUS_SUBTREE_FLAGS_DISPATCH_TO_UNENUMERATED_NODES flag is not * specified (ie: to verify that the object path is valid). * * Hierarchies are not supported; the items that you return should not * contain the `/` character. * * The return value will be freed with g_strfreev(). * * Returns: (array zero-terminated=1) (transfer full): A newly allocated array of strings for node names that are children of @object_path. * * Since: 2.26 */ typedef gchar** (*GDBusSubtreeEnumerateFunc) (GDBusConnection *connection, const gchar *sender, const gchar *object_path, gpointer user_data); /** * GDBusSubtreeIntrospectFunc: * @connection: A #GDBusConnection. * @sender: The unique bus name of the remote caller. * @object_path: The object path that was registered with g_dbus_connection_register_subtree(). * @node: A node that is a child of @object_path (relative to @object_path) or %NULL for the root of the subtree. * @user_data: The @user_data #gpointer passed to g_dbus_connection_register_subtree(). * * The type of the @introspect function in #GDBusSubtreeVTable. * * Subtrees are flat. @node, if non-%NULL, is always exactly one * segment of the object path (ie: it never contains a slash). * * This function should return %NULL to indicate that there is no object * at this node. * * If this function returns non-%NULL, the return value is expected to * be a %NULL-terminated array of pointers to #GDBusInterfaceInfo * structures describing the interfaces implemented by @node. This * array will have g_dbus_interface_info_unref() called on each item * before being freed with g_free(). * * The difference between returning %NULL and an array containing zero * items is that the standard DBus interfaces will returned to the * remote introspector in the empty array case, but not in the %NULL * case. * * Returns: (array zero-terminated=1) (nullable) (transfer full): A %NULL-terminated array of pointers to #GDBusInterfaceInfo, or %NULL. * * Since: 2.26 */ typedef GDBusInterfaceInfo ** (*GDBusSubtreeIntrospectFunc) (GDBusConnection *connection, const gchar *sender, const gchar *object_path, const gchar *node, gpointer user_data); /** * GDBusSubtreeDispatchFunc: * @connection: A #GDBusConnection. * @sender: The unique bus name of the remote caller. * @object_path: The object path that was registered with g_dbus_connection_register_subtree(). * @interface_name: The D-Bus interface name that the method call or property access is for. * @node: A node that is a child of @object_path (relative to @object_path) or %NULL for the root of the subtree. * @out_user_data: (nullable) (not optional): Return location for user data to pass to functions in the returned #GDBusInterfaceVTable. * @user_data: The @user_data #gpointer passed to g_dbus_connection_register_subtree(). * * The type of the @dispatch function in #GDBusSubtreeVTable. * * Subtrees are flat. @node, if non-%NULL, is always exactly one * segment of the object path (ie: it never contains a slash). * * Returns: (nullable): A #GDBusInterfaceVTable or %NULL if you don't want to handle the methods. * * Since: 2.26 */ typedef const GDBusInterfaceVTable * (*GDBusSubtreeDispatchFunc) (GDBusConnection *connection, const gchar *sender, const gchar *object_path, const gchar *interface_name, const gchar *node, gpointer *out_user_data, gpointer user_data); /** * GDBusSubtreeVTable: * @enumerate: Function for enumerating child nodes. * @introspect: Function for introspecting a child node. * @dispatch: Function for dispatching a remote call on a child node. * * Virtual table for handling subtrees registered with g_dbus_connection_register_subtree(). * * Since: 2.26 */ struct _GDBusSubtreeVTable { GDBusSubtreeEnumerateFunc enumerate; GDBusSubtreeIntrospectFunc introspect; GDBusSubtreeDispatchFunc dispatch; /*< private >*/ /* Padding for future expansion - also remember to update * gdbusconnection.c:_g_dbus_subtree_vtable_copy() when * changing this. */ gpointer padding[8]; }; GLIB_AVAILABLE_IN_ALL guint g_dbus_connection_register_subtree (GDBusConnection *connection, const gchar *object_path, const GDBusSubtreeVTable *vtable, GDBusSubtreeFlags flags, gpointer user_data, GDestroyNotify user_data_free_func, GError **error); GLIB_AVAILABLE_IN_ALL gboolean g_dbus_connection_unregister_subtree (GDBusConnection *connection, guint registration_id); /* ---------------------------------------------------------------------------------------------------- */ /** * GDBusSignalCallback: * @connection: A #GDBusConnection. * @sender_name: (nullable): The unique bus name of the sender of the signal, or %NULL on a peer-to-peer D-Bus connection. * @object_path: The object path that the signal was emitted on. * @interface_name: The name of the interface. * @signal_name: The name of the signal. * @parameters: A #GVariant tuple with parameters for the signal. * @user_data: User data passed when subscribing to the signal. * * Signature for callback function used in g_dbus_connection_signal_subscribe(). * * Since: 2.26 */ typedef void (*GDBusSignalCallback) (GDBusConnection *connection, const gchar *sender_name, const gchar *object_path, const gchar *interface_name, const gchar *signal_name, GVariant *parameters, gpointer user_data); GLIB_AVAILABLE_IN_ALL guint g_dbus_connection_signal_subscribe (GDBusConnection *connection, const gchar *sender, const gchar *interface_name, const gchar *member, const gchar *object_path, const gchar *arg0, GDBusSignalFlags flags, GDBusSignalCallback callback, gpointer user_data, GDestroyNotify user_data_free_func); GLIB_AVAILABLE_IN_ALL void g_dbus_connection_signal_unsubscribe (GDBusConnection *connection, guint subscription_id); /* ---------------------------------------------------------------------------------------------------- */ /** * GDBusMessageFilterFunction: * @connection: (transfer none): A #GDBusConnection. * @message: (transfer full): A locked #GDBusMessage that the filter function takes ownership of. * @incoming: %TRUE if it is a message received from the other peer, %FALSE if it is * a message to be sent to the other peer. * @user_data: User data passed when adding the filter. * * Signature for function used in g_dbus_connection_add_filter(). * * A filter function is passed a #GDBusMessage and expected to return * a #GDBusMessage too. Passive filter functions that don't modify the * message can simply return the @message object: * |[ * static GDBusMessage * * passive_filter (GDBusConnection *connection * GDBusMessage *message, * gboolean incoming, * gpointer user_data) * { * // inspect @message * return message; * } * ]| * Filter functions that wants to drop a message can simply return %NULL: * |[ * static GDBusMessage * * drop_filter (GDBusConnection *connection * GDBusMessage *message, * gboolean incoming, * gpointer user_data) * { * if (should_drop_message) * { * g_object_unref (message); * message = NULL; * } * return message; * } * ]| * Finally, a filter function may modify a message by copying it: * |[ * static GDBusMessage * * modifying_filter (GDBusConnection *connection * GDBusMessage *message, * gboolean incoming, * gpointer user_data) * { * GDBusMessage *copy; * GError *error; * * error = NULL; * copy = g_dbus_message_copy (message, &error); * // handle @error being set * g_object_unref (message); * * // modify @copy * * return copy; * } * ]| * If the returned #GDBusMessage is different from @message and cannot * be sent on @connection (it could use features, such as file * descriptors, not compatible with @connection), then a warning is * logged to standard error. Applications can * check this ahead of time using g_dbus_message_to_blob() passing a * #GDBusCapabilityFlags value obtained from @connection. * * Returns: (transfer full) (nullable): A #GDBusMessage that will be freed with * g_object_unref() or %NULL to drop the message. Passive filter * functions can simply return the passed @message object. * * Since: 2.26 */ typedef GDBusMessage *(*GDBusMessageFilterFunction) (GDBusConnection *connection, GDBusMessage *message, gboolean incoming, gpointer user_data); GLIB_AVAILABLE_IN_ALL guint g_dbus_connection_add_filter (GDBusConnection *connection, GDBusMessageFilterFunction filter_function, gpointer user_data, GDestroyNotify user_data_free_func); GLIB_AVAILABLE_IN_ALL void g_dbus_connection_remove_filter (GDBusConnection *connection, guint filter_id); /* ---------------------------------------------------------------------------------------------------- */ G_END_DECLS #endif /* __G_DBUS_CONNECTION_H__ */
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