gnio/ginet4address.c

   1 /* GNIO - GLib Network Layer of GIO
   2  *
   3  * Copyright (C) 2008 Christian Kellner
   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  * Author: Christian Kellner <gicmo@gnome.org>
  21  */
  22
  23 #include <config.h>
  24 #include <glib.h>
  25
  26 #include <netinet/in.h>
  27 #include <arpa/inet.h>
  28
  29 #include "ginet4address.h"
  30
  31 G_DEFINE_TYPE (GInet4Address, g_inet4_address, G_TYPE_INET_ADDRESS);
  32
  33 struct _GInet4AddressPrivate {
  34   union {
  35     guint8  u4_addr8[4];
  36     guint32 u4_addr32;
  37   } addr;
  38 };
  39
  40 static gboolean
  41 g_inet4_address_is_any (GInetAddress *address)
  42 {
  43   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  44
  45   return (g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32) == INADDR_ANY);
  46 }
  47
  48 static gboolean
  49 g_inet4_address_is_linklocal (GInetAddress *address)
  50 {
  51   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  52
  53   return ((g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32) & 0xffff0000) == 0xa9fe0000);
  54 }
  55
  56 static gboolean
  57 g_inet4_address_is_loopback (GInetAddress *address)
  58 {
  59   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  60
  61   return (G_INET4_ADDRESS (address)->priv->addr.u4_addr8[0] == IN_LOOPBACKNET);
  62 }
  63
  64 static gboolean
  65 g_inet4_address_is_sitelocal (GInetAddress *address)
  66 {
  67   guint32 addr;
  68
  69   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  70
  71   addr = g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32);
  72
  73   return ((addr & 0xff000000) == (10 << 24)) || ((addr & 0xfff00000) == 0xac100000) || ((addr & 0xffff0000) == 0xc0a80000);
  74 }
  75
  76 static gboolean
  77 g_inet4_address_is_multicast (GInetAddress *address)
  78 {
  79   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  80
  81   return IN_MULTICAST (g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32));
  82 }
  83
  84 static gboolean
  85 g_inet4_address_is_mc_global (GInetAddress *address)
  86 {
  87   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  88
  89   return FALSE;
  90 }
  91
  92 static gboolean
  93 g_inet4_address_is_mc_linklocal (GInetAddress *address)
  94 {
  95   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  96
  97   return FALSE;
  98 }
  99
 100 static gboolean
 101 g_inet4_address_is_mc_nodelocal (GInetAddress *address)
 102 {
 103   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 104
 105   return FALSE;
 106 }
 107
 108 static gboolean
 109 g_inet4_address_is_mc_orglocal (GInetAddress *address)
 110 {
 111   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 112
 113   return FALSE;
 114 }
 115
 116 static gboolean
 117 g_inet4_address_is_mc_sitelocal (GInetAddress *address)
 118 {
 119   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 120
 121   return FALSE;
 122 }
 123
 124 static void
 125 g_inet4_address_finalize (GObject *object)
 126 {
 127   GInet4Address *address G_GNUC_UNUSED = G_INET4_ADDRESS (object);
 128
 129   if (G_OBJECT_CLASS (g_inet4_address_parent_class)->finalize)
 130     (*G_OBJECT_CLASS (g_inet4_address_parent_class)->finalize) (object);
 131 }
 132
 133 static void
 134 g_inet4_address_dispose (GObject *object)
 135 {
 136   GInet4Address *address G_GNUC_UNUSED = G_INET4_ADDRESS (object);;
 137
 138   if (G_OBJECT_CLASS (g_inet4_address_parent_class)->dispose)
 139     (*G_OBJECT_CLASS (g_inet4_address_parent_class)->dispose) (object);
 140 }
 141
 142 static void
 143 g_inet4_address_class_init (GInet4AddressClass *klass)
 144 {
 145   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 146   GInetAddressClass *ginetaddress_class = G_INET_ADDRESS_CLASS (klass);
 147
 148   g_type_class_add_private (klass, sizeof (GInet4AddressPrivate));
 149
 150   gobject_class->finalize = g_inet4_address_finalize;
 151   gobject_class->dispose = g_inet4_address_dispose;
 152
 153   ginetaddress_class->is_any = g_inet4_address_is_any;
 154   ginetaddress_class->is_linklocal = g_inet4_address_is_linklocal;
 155   ginetaddress_class->is_loopback = g_inet4_address_is_loopback;
 156   ginetaddress_class->is_sitelocal = g_inet4_address_is_sitelocal;
 157   ginetaddress_class->is_multicast = g_inet4_address_is_multicast;
 158   ginetaddress_class->is_mc_global = g_inet4_address_is_mc_global;
 159   ginetaddress_class->is_mc_linklocal = g_inet4_address_is_mc_linklocal;
 160   ginetaddress_class->is_mc_nodelocal = g_inet4_address_is_mc_nodelocal;
 161   ginetaddress_class->is_mc_orglocal = g_inet4_address_is_mc_orglocal;
 162   ginetaddress_class->is_mc_sitelocal = g_inet4_address_is_mc_sitelocal;
 163 }
 164
 165 static void
 166 g_inet4_address_init (GInet4Address *address)
 167 {
 168   address->priv = G_TYPE_INSTANCE_GET_PRIVATE (address,
 169                                                G_TYPE_INET4_ADDRESS,
 170                                                GInet4AddressPrivate);
 171 }
 172
 173 /* ************************************************************************* */
 174 /* Public Functions */
 175
 176 GInet4Address *
 177 g_inet4_address_from_string (const gchar *string)
 178 {
 179   struct in_addr addr;
 180
 181   if (!inet_aton (string, &addr))
 182     {
 183       g_warning ("Could not parse IP address %s", string);
 184       return NULL;
 185     }
 186
 187   return g_inet4_address_from_bytes ((guint8 *) &(addr.s_addr));
 188 }
 189
 190 char *
 191 g_inet4_address_to_string (GInet4Address *address)
 192 {
 193   guint8 *addr;
 194
 195   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), NULL);
 196
 197   addr = address->priv->addr.u4_addr8;
 198
 199   return g_strdup_printf ("%d.%d.%d.%d", addr[0], addr[1], addr[2], addr[3]);
 200 }
 201
 202 GInet4Address *
 203 g_inet4_address_from_bytes (guint8 bytes[])
 204 {
 205   GInet4Address *address = G_INET4_ADDRESS (g_object_new (G_TYPE_INET4_ADDRESS, NULL));
 206
 207   guint8 *addr = address->priv->addr.u4_addr8;
 208
 209   addr[0] = bytes[0];
 210   addr[1] = bytes[1];
 211   addr[2] = bytes[2];
 212   addr[3] = bytes[3];
 213
 214   return address;
 215 }
 216
 217 const guint8 *
 218 g_inet4_address_to_bytes (GInet4Address *address)
 219 {
 220   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), NULL);
 221
 222   return address->priv->addr.u4_addr8;
 223 }
 224
 225 GInet4Address *
 226 g_inet4_address_new_loopback (void)
 227 {
 228   guint8 addr[8] = {127, 0, 0, 1};
 229
 230   return g_inet4_address_from_bytes (addr);
 231 }
 232
 233 GInet4Address *
 234 g_inet4_address_new_any (void)
 235 {
 236   guint8 addr[8] = {0, 0, 0, 0};
 237
 238   return g_inet4_address_from_bytes (addr);
 239 }