gio/gsocketoutputstream.c - third_party/glib - Git at Google

 /*  GIO - GLib Input, Output and Streaming Library
  *
  * Copyright © 2008 Christian Kellner, Samuel Cormier-Iijima
  *           © 2009 codethink
  *
  * 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/>.
  *
  * Authors: Christian Kellner <gicmo@gnome.org>
  *          Samuel Cormier-Iijima <sciyoshi@gmail.com>
  *          Ryan Lortie <desrt@desrt.ca>
  */

 #include "config.h"
 #include "goutputstream.h"
 #include "gsocketoutputstream.h"
 #include "gsocket.h"
 #include "glibintl.h"

 #include "gcancellable.h"
 #include "gpollableinputstream.h"
 #include "gpollableoutputstream.h"
 #include "gioerror.h"
 #include "glibintl.h"
 #include "gfiledescriptorbased.h"

 struct _GSocketOutputStreamPrivate
 {
   GSocket *socket;

   /* pending operation metadata */
   gconstpointer buffer;
   gsize count;
 };

 static void g_socket_output_stream_pollable_iface_init (GPollableOutputStreamInterface *iface);
 #ifdef G_OS_UNIX
 static void g_socket_output_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface);
 #endif

 #define g_socket_output_stream_get_type _g_socket_output_stream_get_type

 #ifdef G_OS_UNIX
 G_DEFINE_TYPE_WITH_CODE (GSocketOutputStream, g_socket_output_stream, G_TYPE_OUTPUT_STREAM,
                          G_ADD_PRIVATE (GSocketOutputStream)
 			 G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_OUTPUT_STREAM, g_socket_output_stream_pollable_iface_init)
 			 G_IMPLEMENT_INTERFACE (G_TYPE_FILE_DESCRIPTOR_BASED, g_socket_output_stream_file_descriptor_based_iface_init)
 			 )
 #else
 G_DEFINE_TYPE_WITH_CODE (GSocketOutputStream, g_socket_output_stream, G_TYPE_OUTPUT_STREAM,
                          G_ADD_PRIVATE (GSocketOutputStream)
 			 G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_OUTPUT_STREAM, g_socket_output_stream_pollable_iface_init)
 			 )
 #endif

 enum
 {
   PROP_0,
   PROP_SOCKET
 };

 static void
 g_socket_output_stream_get_property (GObject    *object,
                                      guint       prop_id,
                                      GValue     *value,
                                      GParamSpec *pspec)
 {
   GSocketOutputStream *stream = G_SOCKET_OUTPUT_STREAM (object);

   switch (prop_id)
     {
       case PROP_SOCKET:
         g_value_set_object (value, stream->priv->socket);
         break;

       default:
         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
     }
 }

 static void
 g_socket_output_stream_set_property (GObject      *object,
                                      guint         prop_id,
                                      const GValue *value,
                                      GParamSpec   *pspec)
 {
   GSocketOutputStream *stream = G_SOCKET_OUTPUT_STREAM (object);

   switch (prop_id)
     {
       case PROP_SOCKET:
         stream->priv->socket = g_value_dup_object (value);
         break;

       default:
         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
     }
 }

 static void
 g_socket_output_stream_finalize (GObject *object)
 {
   GSocketOutputStream *stream = G_SOCKET_OUTPUT_STREAM (object);

   if (stream->priv->socket)
     g_object_unref (stream->priv->socket);

   G_OBJECT_CLASS (g_socket_output_stream_parent_class)->finalize (object);
 }

 static gssize
 g_socket_output_stream_write (GOutputStream  *stream,
                               const void     *buffer,
                               gsize           count,
                               GCancellable   *cancellable,
                               GError        **error)
 {
   GSocketOutputStream *onput_stream = G_SOCKET_OUTPUT_STREAM (stream);

   return g_socket_send_with_blocking (onput_stream->priv->socket,
 				      buffer, count, TRUE,
 				      cancellable, error);
 }

 static gboolean
 g_socket_output_stream_pollable_is_writable (GPollableOutputStream *pollable)
 {
   GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (pollable);

   return g_socket_condition_check (output_stream->priv->socket, G_IO_OUT);
 }

 static gssize
 g_socket_output_stream_pollable_write_nonblocking (GPollableOutputStream  *pollable,
 						   const void             *buffer,
 						   gsize                   size,
 						   GError                **error)
 {
   GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (pollable);

   return g_socket_send_with_blocking (output_stream->priv->socket,
 				      buffer, size, FALSE,
 				      NULL, error);
 }

 static GSource *
 g_socket_output_stream_pollable_create_source (GPollableOutputStream *pollable,
 					       GCancellable          *cancellable)
 {
   GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (pollable);
   GSource *socket_source, *pollable_source;

   pollable_source = g_pollable_source_new (G_OBJECT (output_stream));
   socket_source = g_socket_create_source (output_stream->priv->socket,
 					  G_IO_OUT, cancellable);
   g_source_set_dummy_callback (socket_source);
   g_source_add_child_source (pollable_source, socket_source);
   g_source_unref (socket_source);

   return pollable_source;
 }

 #ifdef G_OS_UNIX
 static int
 g_socket_output_stream_get_fd (GFileDescriptorBased *fd_based)
 {
   GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (fd_based);

   return g_socket_get_fd (output_stream->priv->socket);
 }
 #endif

 static void
 g_socket_output_stream_class_init (GSocketOutputStreamClass *klass)
 {
   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
   GOutputStreamClass *goutputstream_class = G_OUTPUT_STREAM_CLASS (klass);

   gobject_class->finalize = g_socket_output_stream_finalize;
   gobject_class->get_property = g_socket_output_stream_get_property;
   gobject_class->set_property = g_socket_output_stream_set_property;

   goutputstream_class->write_fn = g_socket_output_stream_write;

   g_object_class_install_property (gobject_class, PROP_SOCKET,
 				   g_param_spec_object ("socket",
 							P_("socket"),
 							P_("The socket that this stream wraps"),
 							G_TYPE_SOCKET, G_PARAM_CONSTRUCT_ONLY |
 							G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 }

 #ifdef G_OS_UNIX
 static void
 g_socket_output_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface)
 {
   iface->get_fd = g_socket_output_stream_get_fd;
 }
 #endif

 static void
 g_socket_output_stream_pollable_iface_init (GPollableOutputStreamInterface *iface)
 {
   iface->is_writable = g_socket_output_stream_pollable_is_writable;
   iface->create_source = g_socket_output_stream_pollable_create_source;
   iface->write_nonblocking = g_socket_output_stream_pollable_write_nonblocking;
 }

 static void
 g_socket_output_stream_init (GSocketOutputStream *stream)
 {
   stream->priv = g_socket_output_stream_get_instance_private (stream);
 }

 GSocketOutputStream *
 _g_socket_output_stream_new (GSocket *socket)
 {
   return g_object_new (G_TYPE_SOCKET_OUTPUT_STREAM, "socket", socket, NULL);
 }
	/* GIO - GLib Input, Output and Streaming Library
	*
	* Copyright © 2008 Christian Kellner, Samuel Cormier-Iijima
	* © 2009 codethink
	*
	* 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/>.
	*
	* Authors: Christian Kellner <gicmo@gnome.org>
	* Samuel Cormier-Iijima <sciyoshi@gmail.com>
	* Ryan Lortie <desrt@desrt.ca>
	*/

	#include "config.h"
	#include "goutputstream.h"
	#include "gsocketoutputstream.h"
	#include "gsocket.h"
	#include "glibintl.h"

	#include "gcancellable.h"
	#include "gpollableinputstream.h"
	#include "gpollableoutputstream.h"
	#include "gioerror.h"
	#include "glibintl.h"
	#include "gfiledescriptorbased.h"

	struct _GSocketOutputStreamPrivate
	{
	GSocket *socket;

	/* pending operation metadata */
	gconstpointer buffer;
	gsize count;
	};

	static void g_socket_output_stream_pollable_iface_init (GPollableOutputStreamInterface *iface);
	#ifdef G_OS_UNIX
	static void g_socket_output_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface);
	#endif

	#define g_socket_output_stream_get_type _g_socket_output_stream_get_type

	#ifdef G_OS_UNIX
	G_DEFINE_TYPE_WITH_CODE (GSocketOutputStream, g_socket_output_stream, G_TYPE_OUTPUT_STREAM,
	G_ADD_PRIVATE (GSocketOutputStream)
	G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_OUTPUT_STREAM, g_socket_output_stream_pollable_iface_init)
	G_IMPLEMENT_INTERFACE (G_TYPE_FILE_DESCRIPTOR_BASED, g_socket_output_stream_file_descriptor_based_iface_init)
	)
	#else
	G_DEFINE_TYPE_WITH_CODE (GSocketOutputStream, g_socket_output_stream, G_TYPE_OUTPUT_STREAM,
	G_ADD_PRIVATE (GSocketOutputStream)
	G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_OUTPUT_STREAM, g_socket_output_stream_pollable_iface_init)
	)
	#endif

	enum
	{
	PROP_0,
	PROP_SOCKET
	};

	static void
	g_socket_output_stream_get_property (GObject *object,
	guint prop_id,
	GValue *value,
	GParamSpec *pspec)
	{
	GSocketOutputStream *stream = G_SOCKET_OUTPUT_STREAM (object);

	switch (prop_id)
	{
	case PROP_SOCKET:
	g_value_set_object (value, stream->priv->socket);
	break;

	default:
	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
	}
	}

	static void
	g_socket_output_stream_set_property (GObject *object,
	guint prop_id,
	const GValue *value,
	GParamSpec *pspec)
	{
	GSocketOutputStream *stream = G_SOCKET_OUTPUT_STREAM (object);

	switch (prop_id)
	{
	case PROP_SOCKET:
	stream->priv->socket = g_value_dup_object (value);
	break;

	default:
	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
	}
	}

	static void
	g_socket_output_stream_finalize (GObject *object)
	{
	GSocketOutputStream *stream = G_SOCKET_OUTPUT_STREAM (object);

	if (stream->priv->socket)
	g_object_unref (stream->priv->socket);

	G_OBJECT_CLASS (g_socket_output_stream_parent_class)->finalize (object);
	}

	static gssize
	g_socket_output_stream_write (GOutputStream *stream,
	const void *buffer,
	gsize count,
	GCancellable *cancellable,
	GError **error)
	{
	GSocketOutputStream *onput_stream = G_SOCKET_OUTPUT_STREAM (stream);

	return g_socket_send_with_blocking (onput_stream->priv->socket,
	buffer, count, TRUE,
	cancellable, error);
	}

	static gboolean
	g_socket_output_stream_pollable_is_writable (GPollableOutputStream *pollable)
	{
	GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (pollable);

	return g_socket_condition_check (output_stream->priv->socket, G_IO_OUT);
	}

	static gssize
	g_socket_output_stream_pollable_write_nonblocking (GPollableOutputStream *pollable,
	const void *buffer,
	gsize size,
	GError **error)
	{
	GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (pollable);

	return g_socket_send_with_blocking (output_stream->priv->socket,
	buffer, size, FALSE,
	NULL, error);
	}

	static GSource *
	g_socket_output_stream_pollable_create_source (GPollableOutputStream *pollable,
	GCancellable *cancellable)
	{
	GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (pollable);
	GSource socket_source, pollable_source;

	pollable_source = g_pollable_source_new (G_OBJECT (output_stream));
	socket_source = g_socket_create_source (output_stream->priv->socket,
	G_IO_OUT, cancellable);
	g_source_set_dummy_callback (socket_source);
	g_source_add_child_source (pollable_source, socket_source);
	g_source_unref (socket_source);

	return pollable_source;
	}

	#ifdef G_OS_UNIX
	static int
	g_socket_output_stream_get_fd (GFileDescriptorBased *fd_based)
	{
	GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (fd_based);

	return g_socket_get_fd (output_stream->priv->socket);
	}
	#endif

	static void
	g_socket_output_stream_class_init (GSocketOutputStreamClass *klass)
	{
	GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
	GOutputStreamClass *goutputstream_class = G_OUTPUT_STREAM_CLASS (klass);

	gobject_class->finalize = g_socket_output_stream_finalize;
	gobject_class->get_property = g_socket_output_stream_get_property;
	gobject_class->set_property = g_socket_output_stream_set_property;

	goutputstream_class->write_fn = g_socket_output_stream_write;

	g_object_class_install_property (gobject_class, PROP_SOCKET,
	g_param_spec_object ("socket",
	P_("socket"),
	P_("The socket that this stream wraps"),
	G_TYPE_SOCKET, G_PARAM_CONSTRUCT_ONLY \|
	G_PARAM_READWRITE \| G_PARAM_STATIC_STRINGS));
	}

	#ifdef G_OS_UNIX
	static void
	g_socket_output_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface)
	{
	iface->get_fd = g_socket_output_stream_get_fd;
	}
	#endif

	static void
	g_socket_output_stream_pollable_iface_init (GPollableOutputStreamInterface *iface)
	{
	iface->is_writable = g_socket_output_stream_pollable_is_writable;
	iface->create_source = g_socket_output_stream_pollable_create_source;
	iface->write_nonblocking = g_socket_output_stream_pollable_write_nonblocking;
	}

	static void
	g_socket_output_stream_init (GSocketOutputStream *stream)
	{
	stream->priv = g_socket_output_stream_get_instance_private (stream);
	}

	GSocketOutputStream *
	_g_socket_output_stream_new (GSocket *socket)
	{
	return g_object_new (G_TYPE_SOCKET_OUTPUT_STREAM, "socket", socket, NULL);
	}