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/*
* Copyright (C) 2010-2011 Robert Ancell.
* Author: Robert Ancell <robert.ancell@canonical.com>
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version. See http://www.gnu.org/copyleft/gpl.html the full text of the
* license.
*/
#include <gio/gio.h>
#include "vnc-server.h"
enum {
NEW_CONNECTION,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
struct VNCServerPrivate
{
/* Port to listen on */
guint port;
/* Listening sockets */
GSocket *socket, *socket6;
};
G_DEFINE_TYPE (VNCServer, vnc_server, G_TYPE_OBJECT);
VNCServer *
vnc_server_new (void)
{
return g_object_new (VNC_SERVER_TYPE, NULL);
}
void
vnc_server_set_port (VNCServer *server, guint port)
{
g_return_if_fail (server != NULL);
server->priv->port = port;
}
guint
vnc_server_get_port (VNCServer *server)
{
g_return_val_if_fail (server != NULL, 0);
return server->priv->port;
}
static gboolean
read_cb (GSocket *socket, GIOCondition condition, VNCServer *server)
{
GError *error = NULL;
GSocket *client_socket;
client_socket = g_socket_accept (socket, NULL, &error);
if (error)
g_warning ("Failed to get connection from from VNC socket: %s", error->message);
g_clear_error (&error);
if (client_socket)
{
GInetSocketAddress *address;
gchar *hostname;
address = G_INET_SOCKET_ADDRESS (g_socket_get_remote_address (client_socket, NULL));
hostname = g_inet_address_to_string (g_inet_socket_address_get_address (address));
g_debug ("Got VNC connection from %s:%d", hostname, g_inet_socket_address_get_port (address));
g_free (hostname);
g_signal_emit (server, signals[NEW_CONNECTION], 0, client_socket);
}
return TRUE;
}
static GSocket *
open_tcp_socket (GSocketFamily family, guint port, GError **error)
{
GSocket *socket;
GSocketAddress *address;
socket = g_socket_new (family, G_SOCKET_TYPE_STREAM, G_SOCKET_PROTOCOL_TCP, error);
if (!socket)
return NULL;
address = g_inet_socket_address_new (g_inet_address_new_any (family), port);
if (!g_socket_bind (socket, address, TRUE, error) ||
!g_socket_listen (socket, error))
{
g_object_unref (socket);
return NULL;
}
return socket;
}
gboolean
vnc_server_start (VNCServer *server)
{
GSource *source;
GError *error = NULL;
g_return_val_if_fail (server != NULL, FALSE);
server->priv->socket = open_tcp_socket (G_SOCKET_FAMILY_IPV4, server->priv->port, &error);
if (error)
g_warning ("Failed to create IPv4 VNC socket: %s", error->message);
g_clear_error (&error);
if (server->priv->socket)
{
source = g_socket_create_source (server->priv->socket, G_IO_IN, NULL);
g_source_set_callback (source, (GSourceFunc) read_cb, server, NULL);
g_source_attach (source, NULL);
}
server->priv->socket6 = open_tcp_socket (G_SOCKET_FAMILY_IPV6, server->priv->port, &error);
if (error)
g_warning ("Failed to create IPv6 VNC socket: %s", error->message);
g_clear_error (&error);
if (server->priv->socket6)
{
source = g_socket_create_source (server->priv->socket6, G_IO_IN, NULL);
g_source_set_callback (source, (GSourceFunc) read_cb, server, NULL);
g_source_attach (source, NULL);
}
if (!server->priv->socket && !server->priv->socket6)
return FALSE;
return TRUE;
}
static void
vnc_server_init (VNCServer *server)
{
server->priv = G_TYPE_INSTANCE_GET_PRIVATE (server, VNC_SERVER_TYPE, VNCServerPrivate);
server->priv->port = 5900;
}
static void
vnc_server_finalize (GObject *object)
{
VNCServer *self;
self = VNC_SERVER (object);
if (self->priv->socket)
g_object_unref (self->priv->socket);
if (self->priv->socket6)
g_object_unref (self->priv->socket6);
G_OBJECT_CLASS (vnc_server_parent_class)->finalize (object);
}
static void
vnc_server_class_init (VNCServerClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = vnc_server_finalize;
g_type_class_add_private (klass, sizeof (VNCServerPrivate));
signals[NEW_CONNECTION] =
g_signal_new ("new-connection",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (VNCServerClass, new_connection),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, G_TYPE_SOCKET);
}
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