hook gvariant vectors up to kdbus
[platform/upstream/glib.git] / gio / gsocketconnection.c
index e67237f..9f490c8 100644 (file)
@@ -15,9 +15,7 @@
  * 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, write to the
- * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307, USA.
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
  *
  * Authors: Christian Kellner <gicmo@gnome.org>
  *          Samuel Cormier-Iijima <sciyoshi@gmail.com>
@@ -31,8 +29,9 @@
 
 #include "gsocketoutputstream.h"
 #include "gsocketinputstream.h"
+#include "gioprivate.h"
 #include <gio/giostream.h>
-#include <gio/gsimpleasyncresult.h>
+#include <gio/gtask.h>
 #include "gunixconnection.h"
 #include "gtcpconnection.h"
 #include "glibintl.h"
  * depends on the type of the underlying socket that is in use. For
  * instance, for a TCP/IP connection it will be a #GTcpConnection.
  *
- * Chosing what type of object to construct is done with the socket
+ * Choosing what type of object to construct is done with the socket
  * connection factory, and it is possible for 3rd parties to register
  * custom socket connection types for specific combination of socket
  * family/type/protocol using g_socket_connection_factory_register_type().
  *
+ * To close a #GSocketConnection, use g_io_stream_close(). Closing both
+ * substreams of the #GIOStream separately will not close the underlying
+ * #GSocket.
+ *
  * Since: 2.22
  */
 
-G_DEFINE_TYPE (GSocketConnection,
-              g_socket_connection, G_TYPE_IO_STREAM);
-
 enum
 {
   PROP_NONE,
@@ -75,6 +75,8 @@ struct _GSocketConnectionPrivate
   GInputStream  *input_stream;
   GOutputStream *output_stream;
 
+  GSocketAddress *cached_remote_address;
+
   gboolean       in_dispose;
 };
 
@@ -90,6 +92,8 @@ static gboolean g_socket_connection_close_finish  (GIOStream            *stream,
                                                   GAsyncResult         *result,
                                                   GError              **error);
 
+G_DEFINE_TYPE_WITH_PRIVATE (GSocketConnection, g_socket_connection, G_TYPE_IO_STREAM)
+
 static GInputStream *
 g_socket_connection_get_input_stream (GIOStream *io_stream)
 {
@@ -115,6 +119,152 @@ g_socket_connection_get_output_stream (GIOStream *io_stream)
 }
 
 /**
+ * g_socket_connection_is_connected:
+ * @connection: a #GSocketConnection
+ *
+ * Checks if @connection is connected. This is equivalent to calling
+ * g_socket_is_connected() on @connection's underlying #GSocket.
+ *
+ * Returns: whether @connection is connected
+ *
+ * Since: 2.32
+ */
+gboolean
+g_socket_connection_is_connected (GSocketConnection  *connection)
+{
+  return g_socket_is_connected (connection->priv->socket);
+}
+
+/**
+ * g_socket_connection_connect:
+ * @connection: a #GSocketConnection
+ * @address: a #GSocketAddress specifying the remote address.
+ * @cancellable: (allow-none): a %GCancellable or %NULL
+ * @error: #GError for error reporting, or %NULL to ignore.
+ *
+ * Connect @connection to the specified remote address.
+ *
+ * Returns: %TRUE if the connection succeeded, %FALSE on error
+ *
+ * Since: 2.32
+ */
+gboolean
+g_socket_connection_connect (GSocketConnection  *connection,
+                            GSocketAddress     *address,
+                            GCancellable       *cancellable,
+                            GError            **error)
+{
+  g_return_val_if_fail (G_IS_SOCKET_CONNECTION (connection), FALSE);
+  g_return_val_if_fail (G_IS_SOCKET_ADDRESS (address), FALSE);
+
+  return g_socket_connect (connection->priv->socket, address,
+                          cancellable, error);
+}
+
+static gboolean g_socket_connection_connect_callback (GSocket      *socket,
+                                                     GIOCondition  condition,
+                                                     gpointer      user_data);
+
+/**
+ * g_socket_connection_connect_async:
+ * @connection: a #GSocketConnection
+ * @address: a #GSocketAddress specifying the remote address.
+ * @cancellable: (allow-none): a %GCancellable or %NULL
+ * @callback: (scope async): a #GAsyncReadyCallback
+ * @user_data: (closure): user data for the callback
+ *
+ * Asynchronously connect @connection to the specified remote address.
+ *
+ * This clears the #GSocket:blocking flag on @connection's underlying
+ * socket if it is currently set.
+ *
+ * Use g_socket_connection_connect_finish() to retrieve the result.
+ *
+ * Since: 2.32
+ */
+void
+g_socket_connection_connect_async (GSocketConnection   *connection,
+                                  GSocketAddress      *address,
+                                  GCancellable        *cancellable,
+                                  GAsyncReadyCallback  callback,
+                                  gpointer             user_data)
+{
+  GTask *task;
+  GError *tmp_error = NULL;
+
+  g_return_if_fail (G_IS_SOCKET_CONNECTION (connection));
+  g_return_if_fail (G_IS_SOCKET_ADDRESS (address));
+
+  task = g_task_new (connection, cancellable, callback, user_data);
+
+  g_socket_set_blocking (connection->priv->socket, FALSE);
+
+  if (g_socket_connect (connection->priv->socket, address,
+                       cancellable, &tmp_error))
+    {
+      g_task_return_boolean (task, TRUE);
+      g_object_unref (task);
+    }
+  else if (g_error_matches (tmp_error, G_IO_ERROR, G_IO_ERROR_PENDING))
+    {
+      GSource *source;
+
+      g_error_free (tmp_error);
+      source = g_socket_create_source (connection->priv->socket,
+                                      G_IO_OUT, cancellable);
+      g_task_attach_source (task, source,
+                           (GSourceFunc) g_socket_connection_connect_callback);
+      g_source_unref (source);
+    }
+  else
+    {
+      g_task_return_error (task, tmp_error);
+      g_object_unref (task);
+    }
+}
+
+static gboolean
+g_socket_connection_connect_callback (GSocket      *socket,
+                                     GIOCondition  condition,
+                                     gpointer      user_data)
+{
+  GTask *task = user_data;
+  GSocketConnection *connection = g_task_get_source_object (task);
+  GError *error = NULL;
+
+  if (g_socket_check_connect_result (connection->priv->socket, &error))
+    g_task_return_boolean (task, TRUE);
+  else
+    g_task_return_error (task, error);
+
+  g_object_unref (task);
+  return FALSE;
+}
+
+/**
+ * g_socket_connection_connect_finish:
+ * @connection: a #GSocketConnection
+ * @result: the #GAsyncResult
+ * @error: #GError for error reporting, or %NULL to ignore.
+ *
+ * Gets the result of a g_socket_connection_connect_async() call.
+ *
+ * Returns: %TRUE if the connection succeeded, %FALSE on error
+ *
+ * Since: 2.32
+ */
+gboolean
+g_socket_connection_connect_finish (GSocketConnection  *connection,
+                                   GAsyncResult       *result,
+                                   GError            **error)
+{
+  g_return_val_if_fail (G_IS_SOCKET_CONNECTION (connection), FALSE);
+  g_return_val_if_fail (g_task_is_valid (result, connection), FALSE);
+
+  return g_task_propagate_boolean (G_TASK (result), error);
+}
+
+/**
  * g_socket_connection_get_socket:
  * @connection: a #GSocketConnection
  *
@@ -160,6 +310,13 @@ g_socket_connection_get_local_address (GSocketConnection  *connection,
  *
  * Try to get the remote address of a socket connection.
  *
+ * Since GLib 2.40, when used with g_socket_client_connect() or
+ * g_socket_client_connect_async(), during emission of
+ * %G_SOCKET_CLIENT_CONNECTING, this function will return the remote
+ * address that will be used for the connection.  This allows
+ * applications to print e.g. "Connecting to example.com
+ * (10.42.77.3)...".
+ *
  * Returns: (transfer full): a #GSocketAddress or %NULL on error.
  *     Free the returned object with g_object_unref().
  *
@@ -169,9 +326,27 @@ GSocketAddress *
 g_socket_connection_get_remote_address (GSocketConnection  *connection,
                                        GError            **error)
 {
+  if (!g_socket_is_connected (connection->priv->socket))
+    {
+      return connection->priv->cached_remote_address ?
+        g_object_ref (connection->priv->cached_remote_address) : NULL;
+    }
   return g_socket_get_remote_address (connection->priv->socket, error);
 }
 
+/* Private API allowing applications to retrieve the resolved address
+ * now, before we start connecting.
+ *
+ * https://bugzilla.gnome.org/show_bug.cgi?id=712547
+ */
+void
+g_socket_connection_set_cached_remote_address (GSocketConnection *connection,
+                                               GSocketAddress    *address)
+{
+  g_clear_object (&connection->priv->cached_remote_address);
+  connection->priv->cached_remote_address = address ? g_object_ref (address) : NULL;
+}
+
 static void
 g_socket_connection_get_property (GObject    *object,
                                   guint       prop_id,
@@ -225,6 +400,8 @@ g_socket_connection_dispose (GObject *object)
 
   connection->priv->in_dispose = TRUE;
 
+  g_clear_object (&connection->priv->cached_remote_address);
+
   G_OBJECT_CLASS (g_socket_connection_parent_class)
     ->dispose (object);
 
@@ -254,8 +431,6 @@ g_socket_connection_class_init (GSocketConnectionClass *klass)
   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
   GIOStreamClass *stream_class = G_IO_STREAM_CLASS (klass);
 
-  g_type_class_add_private (klass, sizeof (GSocketConnectionPrivate));
-
   gobject_class->set_property = g_socket_connection_set_property;
   gobject_class->get_property = g_socket_connection_get_property;
   gobject_class->constructed = g_socket_connection_constructed;
@@ -282,9 +457,7 @@ g_socket_connection_class_init (GSocketConnectionClass *klass)
 static void
 g_socket_connection_init (GSocketConnection *connection)
 {
-  connection->priv = G_TYPE_INSTANCE_GET_PRIVATE (connection,
-                                                  G_TYPE_SOCKET_CONNECTION,
-                                                  GSocketConnectionPrivate);
+  connection->priv = g_socket_connection_get_instance_private (connection);
 }
 
 static gboolean
@@ -321,30 +494,23 @@ g_socket_connection_close_async (GIOStream           *stream,
                                 GAsyncReadyCallback  callback,
                                 gpointer             user_data)
 {
-  GSimpleAsyncResult *res;
+  GTask *task;
   GIOStreamClass *class;
   GError *error;
 
   class = G_IO_STREAM_GET_CLASS (stream);
 
+  task = g_task_new (stream, cancellable, callback, user_data);
+
   /* socket close is not blocked, just do it! */
   error = NULL;
   if (class->close_fn &&
       !class->close_fn (stream, cancellable, &error))
-    {
-      g_simple_async_report_gerror_in_idle (G_OBJECT (stream),
-                                           callback, user_data,
-                                           error);
-      g_error_free (error);
-      return;
-    }
+    g_task_return_error (task, error);
+  else
+    g_task_return_boolean (task, TRUE);
 
-  res = g_simple_async_result_new (G_OBJECT (stream),
-                                  callback,
-                                  user_data,
-                                  g_socket_connection_close_async);
-  g_simple_async_result_complete_in_idle (res);
-  g_object_unref (res);
+  g_object_unref (task);
 }
 
 static gboolean
@@ -352,7 +518,7 @@ g_socket_connection_close_finish (GIOStream     *stream,
                                  GAsyncResult  *result,
                                  GError       **error)
 {
-  return TRUE;
+  return g_task_propagate_boolean (G_TASK (result), error);
 }
 
 typedef struct {
@@ -406,7 +572,7 @@ G_LOCK_DEFINE_STATIC(connection_factories);
  * @protocol: a protocol id
  *
  * Looks up the #GType to be used when creating socket connections on
- * sockets with the specified @family,@type and @protocol.
+ * sockets with the specified @family, @type and @protocol.
  *
  * If no type is registered, the #GSocketConnection base type is returned.
  *
@@ -445,11 +611,10 @@ g_socket_connection_factory_register_type (GType         g_type,
 static void
 init_builtin_types (void)
 {
-  volatile GType a_type;
 #ifndef G_OS_WIN32
-  a_type = g_unix_connection_get_type ();
+  g_type_ensure (G_TYPE_UNIX_CONNECTION);
 #endif
-  a_type = g_tcp_connection_get_type ();
+  g_type_ensure (G_TYPE_TCP_CONNECTION);
 }
 
 /**
@@ -459,7 +624,7 @@ init_builtin_types (void)
  * @protocol_id: a protocol id
  *
  * Looks up the #GType to be used when creating socket connections on
- * sockets with the specified @family,@type and @protocol_id.
+ * sockets with the specified @family, @type and @protocol_id.
  *
  * If no type is registered, the #GSocketConnection base type is returned.
  *