gnio/ginet4address.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
  27 #ifndef G_OS_WIN32
  28 # include <netinet/in.h>
  29 # include <arpa/inet.h>
  30 #else
  31 # include <winsock2.h>
  32 # define IN_LOOPBACKNET 127
  33 #endif
  34
  35 #include "ginet4address.h"
  36
  37 G_DEFINE_TYPE (GInet4Address, g_inet4_address, G_TYPE_INET_ADDRESS);
  38
  39 struct _GInet4AddressPrivate {
  40   union {
  41     guint8  u4_addr8[4];
  42     guint32 u4_addr32;
  43   } addr;
  44 };
  45
  46 static gboolean
  47 g_inet4_address_is_any (GInetAddress *address)
  48 {
  49   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  50
  51   return (g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32) == INADDR_ANY);
  52 }
  53
  54 static gboolean
  55 g_inet4_address_is_linklocal (GInetAddress *address)
  56 {
  57   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  58
  59   return ((g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32) & 0xffff0000) == 0xa9fe0000);
  60 }
  61
  62 static gboolean
  63 g_inet4_address_is_loopback (GInetAddress *address)
  64 {
  65   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  66
  67   return (G_INET4_ADDRESS (address)->priv->addr.u4_addr8[0] == IN_LOOPBACKNET);
  68 }
  69
  70 static gboolean
  71 g_inet4_address_is_sitelocal (GInetAddress *address)
  72 {
  73   guint32 addr;
  74
  75   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  76
  77   addr = g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32);
  78
  79   return ((addr & 0xff000000) == (10 << 24)) || ((addr & 0xfff00000) == 0xac100000) || ((addr & 0xffff0000) == 0xc0a80000);
  80 }
  81
  82 static gboolean
  83 g_inet4_address_is_multicast (GInetAddress *address)
  84 {
  85   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  86
  87   return IN_MULTICAST (g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32));
  88 }
  89
  90 static gboolean
  91 g_inet4_address_is_mc_global (GInetAddress *address)
  92 {
  93   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  94
  95   return FALSE;
  96 }
  97
  98 static gboolean
  99 g_inet4_address_is_mc_linklocal (GInetAddress *address)
 100 {
 101   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 102
 103   return FALSE;
 104 }
 105
 106 static gboolean
 107 g_inet4_address_is_mc_nodelocal (GInetAddress *address)
 108 {
 109   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 110
 111   return FALSE;
 112 }
 113
 114 static gboolean
 115 g_inet4_address_is_mc_orglocal (GInetAddress *address)
 116 {
 117   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 118
 119   return FALSE;
 120 }
 121
 122 static gboolean
 123 g_inet4_address_is_mc_sitelocal (GInetAddress *address)
 124 {
 125   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 126
 127   return FALSE;
 128 }
 129
 130 static void
 131 g_inet4_address_finalize (GObject *object)
 132 {
 133   GInet4Address *address G_GNUC_UNUSED = G_INET4_ADDRESS (object);
 134
 135   if (G_OBJECT_CLASS (g_inet4_address_parent_class)->finalize)
 136     (*G_OBJECT_CLASS (g_inet4_address_parent_class)->finalize) (object);
 137 }
 138
 139 static void
 140 g_inet4_address_dispose (GObject *object)
 141 {
 142   GInet4Address *address G_GNUC_UNUSED = G_INET4_ADDRESS (object);;
 143
 144   if (G_OBJECT_CLASS (g_inet4_address_parent_class)->dispose)
 145     (*G_OBJECT_CLASS (g_inet4_address_parent_class)->dispose) (object);
 146 }
 147
 148 static void
 149 g_inet4_address_class_init (GInet4AddressClass *klass)
 150 {
 151   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 152   GInetAddressClass *ginetaddress_class = G_INET_ADDRESS_CLASS (klass);
 153
 154   g_type_class_add_private (klass, sizeof (GInet4AddressPrivate));
 155
 156   gobject_class->finalize = g_inet4_address_finalize;
 157   gobject_class->dispose = g_inet4_address_dispose;
 158
 159   ginetaddress_class->is_any = g_inet4_address_is_any;
 160   ginetaddress_class->is_linklocal = g_inet4_address_is_linklocal;
 161   ginetaddress_class->is_loopback = g_inet4_address_is_loopback;
 162   ginetaddress_class->is_sitelocal = g_inet4_address_is_sitelocal;
 163   ginetaddress_class->is_multicast = g_inet4_address_is_multicast;
 164   ginetaddress_class->is_mc_global = g_inet4_address_is_mc_global;
 165   ginetaddress_class->is_mc_linklocal = g_inet4_address_is_mc_linklocal;
 166   ginetaddress_class->is_mc_nodelocal = g_inet4_address_is_mc_nodelocal;
 167   ginetaddress_class->is_mc_orglocal = g_inet4_address_is_mc_orglocal;
 168   ginetaddress_class->is_mc_sitelocal = g_inet4_address_is_mc_sitelocal;
 169 }
 170
 171 static void
 172 g_inet4_address_init (GInet4Address *address)
 173 {
 174   address->priv = G_TYPE_INSTANCE_GET_PRIVATE (address,
 175                                                G_TYPE_INET4_ADDRESS,
 176                                                GInet4AddressPrivate);
 177 }
 178
 179 /* ************************************************************************* */
 180 /* Public Functions */
 181
 182 GInet4Address *
 183 g_inet4_address_from_string (const gchar *string)
 184 {
 185   struct in_addr addr;
 186
 187 #ifndef G_OS_WIN32
 188   if (!inet_aton (string, &addr))
 189     {
 190       g_warning ("Could not parse IP address %s", string);
 191       return NULL;
 192     }
 193 #else
 194   addr.s_addr = inet_addr (string);
 195   if (addr.s_addr == INADDR_NONE)
 196     {
 197       g_warning ("Could not parse IP address %s", string);
 198       return NULL;
 199     }
 200 #endif
 201
 202   return g_inet4_address_from_bytes ((guint8 *) &(addr.s_addr));
 203 }
 204
 205 char *
 206 g_inet4_address_to_string (GInet4Address *address)
 207 {
 208   guint8 *addr;
 209
 210   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), NULL);
 211
 212   addr = address->priv->addr.u4_addr8;
 213
 214   return g_strdup_printf ("%d.%d.%d.%d", addr[0], addr[1], addr[2], addr[3]);
 215 }
 216
 217 GInet4Address *
 218 g_inet4_address_from_bytes (guint8 bytes[])
 219 {
 220   GInet4Address *address = G_INET4_ADDRESS (g_object_new (G_TYPE_INET4_ADDRESS, NULL));
 221
 222   guint8 *addr = address->priv->addr.u4_addr8;
 223
 224   addr[0] = bytes[0];
 225   addr[1] = bytes[1];
 226   addr[2] = bytes[2];
 227   addr[3] = bytes[3];
 228
 229   return address;
 230 }
 231
 232 const guint8 *
 233 g_inet4_address_to_bytes (GInet4Address *address)
 234 {
 235   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), NULL);
 236
 237   return address->priv->addr.u4_addr8;
 238 }
 239
 240 GInet4Address *
 241 g_inet4_address_new_loopback (void)
 242 {
 243   guint8 addr[8] = {127, 0, 0, 1};
 244
 245   return g_inet4_address_from_bytes (addr);
 246 }
 247
 248 GInet4Address *
 249 g_inet4_address_new_any (void)
 250 {
 251   guint8 addr[8] = {0, 0, 0, 0};
 252
 253   return g_inet4_address_from_bytes (addr);
 254 }