Struct gio::DBusServer

source ·
#[repr(transparent)]
pub struct DBusServer { /* private fields */ }
Expand description

DBusServer is a helper for listening to and accepting D-Bus connections. This can be used to create a new D-Bus server, allowing two peers to use the D-Bus protocol for their own specialized communication. A server instance provided in this way will not perform message routing or implement the org.freedesktop.DBus interface.

To just export an object on a well-known name on a message bus, such as the session or system bus, you should instead use g_bus_own_name().

An example of peer-to-peer communication with GDBus can be found in gdbus-example-peer.c.

Note that a minimal DBusServer will accept connections from any peer. In many use-cases it will be necessary to add a DBusAuthObserver that only accepts connections that have successfully authenticated as the same user that is running the DBusServer. Since GLib 2.68 this can be achieved more simply by passing the DBusServerFlags::AUTHENTICATION_REQUIRE_SAME_USER flag to the server.

Implements

glib::ObjectExt, InitableExt

Implementations§

Creates a new D-Bus server that listens on the first address in address that works.

Once constructed, you can use client_address() to get a D-Bus address string that clients can use to connect.

To have control over the available authentication mechanisms and the users that are authorized to connect, it is strongly recommended to provide a non-None DBusAuthObserver.

Connect to the signal::DBusServer::new-connection signal to handle incoming connections.

The returned DBusServer isn’t active - you have to start it with start().

DBusServer is used in this [example][gdbus-peer-to-peer].

This is a synchronous failable constructor. There is currently no asynchronous version.

address

A D-Bus address.

flags

Flags from the DBusServerFlags enumeration.

guid

A D-Bus GUID.

observer

A DBusAuthObserver or None.

cancellable

A Cancellable or None.

Returns

A DBusServer or None if error is set. Free with g_object_unref().

Gets a D-Bus address string that can be used by clients to connect to self.

This is valid and non-empty if initializing the DBusServer succeeded.

Returns

A D-Bus address string. Do not free, the string is owned by self.

Gets the flags for self.

Returns

A set of flags from the DBusServerFlags enumeration.

Gets the GUID for self, as provided to new_sync().

Returns

A D-Bus GUID. Do not free this string, it is owned by self.

Gets whether self is active.

Returns

true if server is active, false otherwise.

Starts self.

Stops self.

The D-Bus address to listen on.

A DBusAuthObserver object to assist in the authentication process or None.

Emitted when a new authenticated connection has been made. Use DBusConnection::peer_credentials() to figure out what identity (if any), was authenticated.

If you want to accept the connection, take a reference to the connection object and return true. When you are done with the connection call DBusConnection::close() and give up your reference. Note that the other peer may disconnect at any time - a typical thing to do when accepting a connection is to listen to the signal::DBusConnection::closed signal.

If property::DBusServer::flags contains DBusServerFlags::RUN_IN_THREAD then the signal is emitted in a new thread dedicated to the connection. Otherwise the signal is emitted in the [thread-default main context][g-main-context-push-thread-default] of the thread that server was constructed in.

You are guaranteed that signal handlers for this signal runs before incoming messages on connection are processed. This means that it’s suitable to call g_dbus_connection_register_object() or similar from the signal handler.

connection

A DBusConnection for the new connection.

Returns

true to claim connection, false to let other handlers run.

Trait Implementations§

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