## GDBusInterfaceSkeleton

GDBusInterfaceSkeleton — Service-side D-Bus interface

## Synopsis

    #include <gio/gio.h>

                        GDBusInterfaceSkeleton;
    struct              GDBusInterfaceSkeletonClass;
    void                g_dbus_interface_skeleton_flush     (GDBusInterfaceSkeleton *interface_);
    GDBusInterfaceInfo * g_dbus_interface_skeleton_get_info (GDBusInterfaceSkeleton *interface_);
    GDBusInterfaceVTable * g_dbus_interface_skeleton_get_vtable
                                                            (GDBusInterfaceSkeleton *interface_);
    GVariant *          g_dbus_interface_skeleton_get_properties
                                                            (GDBusInterfaceSkeleton *interface_);
    gboolean            g_dbus_interface_skeleton_export    (GDBusInterfaceSkeleton *interface_,
                                                             GDBusConnection *connection,
                                                             const gchar *object_path,
                                                             GError **error);
    void                g_dbus_interface_skeleton_unexport  (GDBusInterfaceSkeleton *interface_);
    GDBusConnection *   g_dbus_interface_skeleton_get_connection
                                                            (GDBusInterfaceSkeleton *interface_);
    const gchar *       g_dbus_interface_skeleton_get_object_path
                                                            (GDBusInterfaceSkeleton *interface_);
    enum                GDBusInterfaceSkeletonFlags;
    GDBusInterfaceSkeletonFlags g_dbus_interface_skeleton_get_flags
                                                            (GDBusInterfaceSkeleton *interface_);
    void                g_dbus_interface_skeleton_set_flags (GDBusInterfaceSkeleton *interface_,
                                                             GDBusInterfaceSkeletonFlags flags);

## Object Hierarchy

      GObject
       +----GDBusInterfaceSkeleton

## Implemented Interfaces

GDBusInterfaceSkeleton implements GDBusInterface.

## Properties

      "g-flags"                  GDBusInterfaceSkeletonFlags  : Read / Write

## Signals

      "g-authorize-method"                             : Run Last

## Description

Abstract base class for D-Bus interfaces on the service side.

## Details

### GDBusInterfaceSkeleton

    typedef struct _GDBusInterfaceSkeleton GDBusInterfaceSkeleton;

The GDBusInterfaceSkeleton structure contains private data and should only be accessed using the provided API.

Since 2.30

### struct GDBusInterfaceSkeletonClass

    struct GDBusInterfaceSkeletonClass {
      GObjectClass parent_class;

      /* Virtual Functions */
      GDBusInterfaceInfo   *(*get_info)       (GDBusInterfaceSkeleton  *interface_);
      GDBusInterfaceVTable *(*get_vtable)     (GDBusInterfaceSkeleton  *interface_);
      GVariant             *(*get_properties) (GDBusInterfaceSkeleton  *interface_);
      void                  (*flush)          (GDBusInterfaceSkeleton  *interface_);

      /* Signals */
      gboolean (*g_authorize_method) (GDBusInterfaceSkeleton  *interface_,
                                      GDBusMethodInvocation   *invocation);
    };

Class structure for GDBusInterfaceSkeleton.

GObjectClass `parent_class`; | The parent class.
`get_info` () | Returns a GDBusInterfaceInfo. See `g_dbus_interface_skeleton_get_info()` for details.
`get_vtable` () | Returns a GDBusInterfaceVTable. See `g_dbus_interface_skeleton_get_vtable()` for details.
`get_properties` () | Returns a GVariant with all properties. See `g_dbus_interface_skeleton_get_properties()`.
`flush` () | Emits outstanding changes, if any. See `g_dbus_interface_skeleton_flush()`.
`g_authorize_method` () | Signal class handler for the "g-authorize-method" signal.

Since 2.30

### g_dbus_interface_skeleton_flush ()

    void                g_dbus_interface_skeleton_flush     (GDBusInterfaceSkeleton *interface_);

If `interface_` has outstanding changes, request for these changes to be emitted immediately.

For example, an exported D-Bus interface may queue up property changes and emit the `org.freedesktop.DBus.Properties::PropertiesChanged` signal later (e.g. in an idle handler). This technique is useful for collapsing multiple property changes into one.

`interface_` : | A GDBusInterfaceSkeleton.

Since 2.30

### g_dbus_interface_skeleton_get_info ()

    GDBusInterfaceInfo * g_dbus_interface_skeleton_get_info (GDBusInterfaceSkeleton *interface_);

Gets D-Bus introspection information for the D-Bus interface implemented by `interface_`.

`interface_` : | A GDBusInterfaceSkeleton.
Returns : | A GDBusInterfaceInfo (never `NULL`). Do not free. [transfer none]

Since 2.30

### g_dbus_interface_skeleton_get_vtable ()

    GDBusInterfaceVTable * g_dbus_interface_skeleton_get_vtable
                                                            (GDBusInterfaceSkeleton *interface_);

Gets the interface vtable for the D-Bus interface implemented by `interface_`. The returned function pointers should expect `interface_` itself to be passed as `user_data`.

`interface_` : | A GDBusInterfaceSkeleton.
Returns : | A GDBusInterfaceVTable (never `NULL`).

Since 2.30

### g_dbus_interface_skeleton_get_properties ()

    GVariant *          g_dbus_interface_skeleton_get_properties
                                                            (GDBusInterfaceSkeleton *interface_);

Gets all D-Bus properties for `interface_`.

`interface_` : | A GDBusInterfaceSkeleton.
Returns : | A GVariant of type 'a{sv}'. Free with `g_variant_unref()`. [transfer full]

Since 2.30

### g_dbus_interface_skeleton_export ()

    gboolean            g_dbus_interface_skeleton_export    (GDBusInterfaceSkeleton *interface_,
                                                             GDBusConnection *connection,
                                                             const gchar *object_path,
                                                             GError **error);

Exports `interface_` at `object_path` on `connection`.

Use `g_dbus_interface_skeleton_unexport()` to unexport the object.

`interface_` : | The D-Bus interface to export.
`connection` : | A GDBusConnection to export `interface_` on.
`object_path` : | The path to export the interface at.
`error` : | Return location for error or `NULL`.
Returns : | `TRUE` if the interface was exported, other `FALSE` with `error` set.

Since 2.30

### g_dbus_interface_skeleton_unexport ()

    void                g_dbus_interface_skeleton_unexport  (GDBusInterfaceSkeleton *interface_);

Stops exporting an interface previously exported with `g_dbus_interface_skeleton_export()`.

`interface_` : | A GDBusInterfaceSkeleton.

Since 2.30

### g_dbus_interface_skeleton_get_connection ()

    GDBusConnection *   g_dbus_interface_skeleton_get_connection
                                                            (GDBusInterfaceSkeleton *interface_);

Gets the connection that `interface_` is exported on, if any.

`interface_` : | A GDBusInterfaceSkeleton.
Returns : | A GDBusConnection or `NULL` if `interface_` is not exported anywhere. Do not free, the object belongs to `interface_`. [transfer none]

Since 2.30

### g_dbus_interface_skeleton_get_object_path ()

    const gchar *       g_dbus_interface_skeleton_get_object_path
                                                            (GDBusInterfaceSkeleton *interface_);

Gets the object path that `interface_` is exported on, if any.

`interface_` : | A GDBusInterfaceSkeleton.
Returns : | A string owned by `interface_` or `NULL` if `interface_` is not exported anywhere. Do not free, the string belongs to `interface_`.

Since 2.30

### enum GDBusInterfaceSkeletonFlags

    typedef enum {
      G_DBUS_INTERFACE_SKELETON_FLAGS_NONE = 0,
      G_DBUS_INTERFACE_SKELETON_FLAGS_HANDLE_METHOD_INVOCATIONS_IN_THREAD = (1<<0)
    } GDBusInterfaceSkeletonFlags;

Flags describing the behavior of a GDBusInterfaceSkeleton instance.

`G_DBUS_INTERFACE_SKELETON_FLAGS_NONE` | No flags set.
`G_DBUS_INTERFACE_SKELETON_FLAGS_HANDLE_METHOD_INVOCATIONS_IN_THREAD` | Each method invocation is handled in a thread dedicated to the invocation. This means that the method implementation can use blocking IO without blocking any other part of the process. It also means that the method implementation must use locking to access data structures used by other threads.

Since 2.30

### g_dbus_interface_skeleton_get_flags ()

    GDBusInterfaceSkeletonFlags g_dbus_interface_skeleton_get_flags
                                                            (GDBusInterfaceSkeleton *interface_);

Gets the GDBusInterfaceSkeletonFlags that describes what the behavior of `interface_`

`interface_` : | A GDBusInterfaceSkeleton.
Returns : | One or more flags from the GDBusInterfaceSkeletonFlags enumeration.

Since 2.30

### g_dbus_interface_skeleton_set_flags ()

    void                g_dbus_interface_skeleton_set_flags (GDBusInterfaceSkeleton *interface_,
                                                             GDBusInterfaceSkeletonFlags flags);

Sets flags describing what the behavior of `skeleton` should be.

`interface_` : | A GDBusInterfaceSkeleton.
`flags` : | Flags from the GDBusInterfaceSkeletonFlags enumeration.

Since 2.30

## Property Details

### The `"g-flags"` property

      "g-flags"                  GDBusInterfaceSkeletonFlags  : Read / Write

Flags from the GDBusInterfaceSkeletonFlags enumeration.

Since 2.30

## Signal Details

### The `"g-authorize-method"` signal

    gboolean            user_function                      (GDBusInterfaceSkeleton *interface,
                                                            GDBusMethodInvocation  *invocation,
                                                            gpointer                user_data)       : Run Last

Emitted when a method is invoked by a remote caller and used to determine if the method call is authorized.

Note that this signal is emitted in a thread dedicated to handling the method call so handlers are allowed to perform blocking IO. This means that it is appropriate to call e.g. polkit_authority_check_authorization_sync() with the POLKIT_CHECK_AUTHORIZATION_FLAGS_ALLOW_USER_INTERACTION flag set.

If `FALSE` is returned then no further handlers are run and the signal handler must take a reference to `invocation` and finish handling the call (e.g. return an error via `g_dbus_method_invocation_return_error()`).

Otherwise, if `TRUE` is returned, signal emission continues. If no handlers return `FALSE`, then the method is dispatched. If `interface` has an enclosing GDBusObjectSkeleton, then the "authorize-method" signal handlers run before the handlers for this signal.

The default class handler just returns `TRUE`.

Please note that the common case is optimized: if no signals handlers are connected and the default class handler isn't overridden (for both `interface` and the enclosing GDBusObjectSkeleton, if any) and "g-flags" does not have the `G_DBUS_INTERFACE_SKELETON_FLAGS_HANDLE_METHOD_INVOCATIONS_IN_THREAD` flags set, no dedicated thread is ever used and the call will be handled in the same thread as the object that `interface` belongs to was exported in.

`interface` : | The GDBusInterfaceSkeleton emitting the signal.
`invocation` : | A GDBusMethodInvocation.
`user_data` : | user data set when the signal handler was connected.
Returns : | `TRUE` if the call is authorized, `FALSE` otherwise.

Since 2.30