gnio/gtcpclient.c

   1 /* GNIO - GLib Network Layer of GIO
   2  *
   3  * Copyright (C) 2008 Christian Kellner, Samuel Cormier-Iijima
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General
  16  * Public License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  *
  20  * Authors: Christian Kellner <gicmo@gnome.org>
  21  *          Samuel Cormier-Iijima <sciyoshi@gmail.com>
  22  */
  23
  24 #include <config.h>
  25 #include <glib.h>
  26 #include <gio/gio.h>
  27 #include <gio/gasynchelper.h>
  28
  29 #include <string.h>
  30 #include <errno.h>
  31
  32 #include "ginetaddress.h"
  33 #include "ginet4address.h"
  34 #include "ginet6address.h"
  35 #include "gsocket.h"
  36 #include "gtcpclient.h"
  37 #include "gnioerror.h"
  38 #include "ginetsocketaddress.h"
  39
  40 G_DEFINE_TYPE (GTcpClient, g_tcp_client, G_TYPE_OBJECT);
  41
  42 enum
  43 {
  44   PROP_0,
  45   PROP_ADDRESS
  46 };
  47
  48 struct _GTcpClientPrivate
  49 {
  50   GSocketAddress *address;
  51 };
  52
  53 static void
  54 g_tcp_client_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
  55 {
  56   GTcpClient *client = G_TCP_CLIENT (object);
  57
  58   switch (prop_id)
  59     {
  60       case PROP_ADDRESS:
  61         g_value_set_object (value, client->priv->address);
  62         break;
  63
  64       default:
  65         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  66     }
  67 }
  68
  69 static void
  70 g_tcp_client_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
  71 {
  72   GTcpClient *client = G_TCP_CLIENT (object);
  73
  74   switch (prop_id)
  75     {
  76       default:
  77         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  78     }
  79 }
  80
  81 static void
  82 g_tcp_client_finalize (GObject *object)
  83 {
  84   GTcpClient *client = G_TCP_CLIENT (object);
  85
  86   if (G_OBJECT_CLASS (g_tcp_client_parent_class)->finalize)
  87     (*G_OBJECT_CLASS (g_tcp_client_parent_class)->finalize) (object);
  88 }
  89
  90 static void
  91 g_tcp_client_dispose (GObject *object)
  92 {
  93   GTcpClient *client = G_TCP_CLIENT (object);
  94
  95   if (G_OBJECT_CLASS (g_tcp_client_parent_class)->dispose)
  96     (*G_OBJECT_CLASS (g_tcp_client_parent_class)->dispose) (object);
  97 }
  98
  99 static void
 100 g_tcp_client_class_init (GTcpClientClass *klass)
 101 {
 102   GObjectClass *gobject_class G_GNUC_UNUSED = G_OBJECT_CLASS (klass);
 103
 104   g_type_class_add_private (klass, sizeof (GTcpClientPrivate));
 105
 106   gobject_class->finalize = g_tcp_client_finalize;
 107   gobject_class->dispose = g_tcp_client_dispose;
 108   gobject_class->set_property = g_tcp_client_set_property;
 109   gobject_class->get_property = g_tcp_client_get_property;
 110
 111   g_object_class_install_property (gobject_class, PROP_ADDRESS,
 112                                    g_param_spec_object ("address",
 113                                                         "address",
 114                                                         "the remote address the socket will connect to",
 115                                                         G_TYPE_SOCKET_ADDRESS,
 116                                                         G_TYPE_CONSTRUCT_ONLY | G_PARAM_READABLE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_BLURB | G_PARAM_STATIC_NICK));
 117 }
 118
 119 static void
 120 g_tcp_client_init (GTcpClient *client)
 121 {
 122   client->priv = G_TYPE_INSTANCE_GET_PRIVATE (client, G_TYPE_TCP_CLIENT, GTcpClientPrivate);
 123 }
 124
 125 GTcpClient *
 126 g_tcp_client_new (GInetSocketAddress *address,
 127                   GError **error)
 128 {
 129   return NULL;
 130 }
 131
 132 gboolean
 133 g_tcp_client_connect (GTcpClient *client,
 134                       GError **error)
 135 {
 136   return FALSE;
 137 }
 138
 139 typedef struct {
 140   GAsyncReadyCallback  callback;
 141   GCancellable        *cancellable;
 142   gpointer             user_data;
 143   GSocket             *socket;
 144   gchar                address_buffer[256];
 145   gsize                address_length;
 146 } ConnectData;
 147
 148 static gboolean
 149 connect_callback (ConnectData *data,
 150                   GIOCondition condition,
 151                   gint fd)
 152 {
 153   GSocket *socket;
 154   GSimpleAsyncResult *result = NULL;
 155   gint sockerr = 0;
 156   gsize sockerr_size = 1;
 157
 158   socket = data->socket;
 159
 160   if (condition & G_IO_OUT)
 161     {
 162       result = g_simple_async_result_new (G_OBJECT (socket), data->callback, data->user_data, g_socket_connect_async);
 163     }
 164   else if (condition & G_IO_ERR)
 165     {
 166       if (getsockopt (fd, SOL_SOCKET, SO_ERROR, (gpointer) &sockerr, &sockerr_size) < 0)
 167         g_warning ("getsockopt: %s", g_strerror (errno));
 168
 169       if (sockerr != 0)
 170         result = g_simple_async_result_new_error (G_OBJECT (socket), data->callback, data->user_data, G_IO_ERROR, g_io_error_from_errno (sockerr), "error connecting: %s", g_strerror (sockerr));
 171       else
 172         g_warning ("getsockopt SO_ERROR returned no error, with sockerr = %d", sockerr);
 173     }
 174
 175   g_simple_async_result_complete (result);
 176
 177   g_object_unref (result);
 178
 179   return FALSE;
 180 }
 181
 182 void
 183 g_socket_connect_async (GTcpClient          *client,
 184                         GCancellable        *cancellable,
 185                         GAsyncReadyCallback  callback,
 186                         gpointer             user_data)
 187 {
 188   GSource *source;
 189   GSimpleAsyncResult *result;
 190   ConnectData *data;
 191   gint ret;
 192   gchar buffer[256];
 193   gsize len;
 194
 195   g_return_if_fail (G_IS_SOCKET (socket) && G_IS_SOCKET_ADDRESS (address));
 196
 197   if (g_socket_get_blocking (socket))
 198     g_socket_set_blocking (socket, FALSE);
 199
 200   g_socket_address_to_native (address, buffer);
 201
 202   len = g_socket_address_native_size (address);
 203
 204   if ((ret = connect (socket->priv->fd, (struct sockaddr *) buffer, len)) < 0)
 205     {
 206       if (errno == EINPROGRESS)
 207         {
 208           source = _g_fd_source_new (socket->priv->fd, G_IO_OUT | G_IO_ERR, cancellable);
 209
 210           data = g_new (ConnectData, 1);
 211
 212           data->socket = socket;
 213           data->callback = callback;
 214           data->cancellable = cancellable;
 215           data->user_data = user_data;
 216           data->address_length = len;
 217           memcpy (data->address_buffer, buffer, len);
 218
 219           g_source_set_callback (source, (GSourceFunc) connect_callback, data, g_free);
 220
 221           g_source_attach (source, NULL);
 222         }
 223       else
 224         {
 225           g_simple_async_report_error_in_idle (G_OBJECT (socket), callback, user_data, G_IO_ERROR, g_io_error_from_errno (errno), "error connecting: %s", g_strerror (errno));
 226         }
 227     }
 228   else
 229     {
 230       result = g_simple_async_result_new (G_OBJECT (socket), callback, user_data, g_socket_connect_async);
 231
 232       g_simple_async_result_complete_in_idle (result);
 233
 234       g_object_unref (result);
 235     }
 236 }
 237
 238 gboolean
 239 g_socket_connect_finish (GSocket       *socket,
 240                          GAsyncResult  *result,
 241                          GError       **error)
 242 {
 243   GSimpleAsyncResult *simple;
 244
 245   g_return_val_if_fail (G_IS_SOCKET (socket), FALSE);
 246
 247   simple = G_SIMPLE_ASYNC_RESULT (result);
 248
 249   if (g_simple_async_result_propagate_error (simple, error))
 250     return FALSE;
 251
 252   g_warn_if_fail (g_simple_async_result_get_source_tag (simple) == g_socket_connect_async);
 253
 254   return TRUE;
 255 }
 256
 257 void
 258 g_tcp_client_close (GTcpClient *tcp_client)
 259 {
 260   g_return_if_fail (G_IS_TCP_CLIENT (tcp_client));
 261 }