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 gchar *
  47 g_inet4_address_to_string (GInetAddress *address)
  48 {
  49   guint8 *addr;
  50
  51   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), NULL);
  52
  53   addr = G_INET4_ADDRESS (address)->priv->addr.u4_addr8;
  54
  55   return g_strdup_printf ("%d.%d.%d.%d", addr[0], addr[1], addr[2], addr[3]);
  56 }
  57
  58 static gboolean
  59 g_inet4_address_is_any (GInetAddress *address)
  60 {
  61   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  62
  63   return (g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32) == INADDR_ANY);
  64 }
  65
  66 static gboolean
  67 g_inet4_address_is_linklocal (GInetAddress *address)
  68 {
  69   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  70
  71   return ((g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32) & 0xffff0000) == 0xa9fe0000);
  72 }
  73
  74 static gboolean
  75 g_inet4_address_is_loopback (GInetAddress *address)
  76 {
  77   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  78
  79   return (G_INET4_ADDRESS (address)->priv->addr.u4_addr8[0] == IN_LOOPBACKNET);
  80 }
  81
  82 static gboolean
  83 g_inet4_address_is_sitelocal (GInetAddress *address)
  84 {
  85   guint32 addr;
  86
  87   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  88
  89   addr = g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32);
  90
  91   return ((addr & 0xff000000) == (10 << 24)) || ((addr & 0xfff00000) == 0xac100000) || ((addr & 0xffff0000) == 0xc0a80000);
  92 }
  93
  94 static gboolean
  95 g_inet4_address_is_multicast (GInetAddress *address)
  96 {
  97   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  98
  99   return IN_MULTICAST (g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32));
 100 }
 101
 102 static gboolean
 103 g_inet4_address_is_mc_global (GInetAddress *address)
 104 {
 105   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 106
 107   return FALSE;
 108 }
 109
 110 static gboolean
 111 g_inet4_address_is_mc_linklocal (GInetAddress *address)
 112 {
 113   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 114
 115   return FALSE;
 116 }
 117
 118 static gboolean
 119 g_inet4_address_is_mc_nodelocal (GInetAddress *address)
 120 {
 121   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 122
 123   return FALSE;
 124 }
 125
 126 static gboolean
 127 g_inet4_address_is_mc_orglocal (GInetAddress *address)
 128 {
 129   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 130
 131   return FALSE;
 132 }
 133
 134 static gboolean
 135 g_inet4_address_is_mc_sitelocal (GInetAddress *address)
 136 {
 137   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 138
 139   return FALSE;
 140 }
 141
 142 static void
 143 g_inet4_address_finalize (GObject *object)
 144 {
 145   GInet4Address *address G_GNUC_UNUSED = G_INET4_ADDRESS (object);
 146
 147   if (G_OBJECT_CLASS (g_inet4_address_parent_class)->finalize)
 148     (*G_OBJECT_CLASS (g_inet4_address_parent_class)->finalize) (object);
 149 }
 150
 151 static void
 152 g_inet4_address_dispose (GObject *object)
 153 {
 154   GInet4Address *address G_GNUC_UNUSED = G_INET4_ADDRESS (object);;
 155
 156   if (G_OBJECT_CLASS (g_inet4_address_parent_class)->dispose)
 157     (*G_OBJECT_CLASS (g_inet4_address_parent_class)->dispose) (object);
 158 }
 159
 160 static void
 161 g_inet4_address_class_init (GInet4AddressClass *klass)
 162 {
 163   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 164   GInetAddressClass *ginetaddress_class = G_INET_ADDRESS_CLASS (klass);
 165
 166   g_type_class_add_private (klass, sizeof (GInet4AddressPrivate));
 167
 168   gobject_class->finalize = g_inet4_address_finalize;
 169   gobject_class->dispose = g_inet4_address_dispose;
 170
 171   ginetaddress_class->to_string = g_inet4_address_to_string;
 172   ginetaddress_class->is_any = g_inet4_address_is_any;
 173   ginetaddress_class->is_linklocal = g_inet4_address_is_linklocal;
 174   ginetaddress_class->is_loopback = g_inet4_address_is_loopback;
 175   ginetaddress_class->is_sitelocal = g_inet4_address_is_sitelocal;
 176   ginetaddress_class->is_multicast = g_inet4_address_is_multicast;
 177   ginetaddress_class->is_mc_global = g_inet4_address_is_mc_global;
 178   ginetaddress_class->is_mc_linklocal = g_inet4_address_is_mc_linklocal;
 179   ginetaddress_class->is_mc_nodelocal = g_inet4_address_is_mc_nodelocal;
 180   ginetaddress_class->is_mc_orglocal = g_inet4_address_is_mc_orglocal;
 181   ginetaddress_class->is_mc_sitelocal = g_inet4_address_is_mc_sitelocal;
 182 }
 183
 184 static void
 185 g_inet4_address_init (GInet4Address *address)
 186 {
 187   address->priv = G_TYPE_INSTANCE_GET_PRIVATE (address,
 188                                                G_TYPE_INET4_ADDRESS,
 189                                                GInet4AddressPrivate);
 190 }
 191
 192 /* ************************************************************************* */
 193 /* Public Functions */
 194
 195 GInet4Address *
 196 g_inet4_address_from_string (const gchar *string)
 197 {
 198   struct in_addr addr;
 199
 200 #ifndef G_OS_WIN32
 201   if (!inet_aton (string, &addr))
 202     {
 203       g_warning ("Could not parse IP address %s", string);
 204       return NULL;
 205     }
 206 #else
 207   addr.s_addr = inet_addr (string);
 208   if (addr.s_addr == INADDR_NONE)
 209     {
 210       g_warning ("Could not parse IP address %s", string);
 211       return NULL;
 212     }
 213 #endif
 214
 215   return g_inet4_address_from_bytes ((guint8 *) &(addr.s_addr));
 216 }
 217
 218 GInet4Address *
 219 g_inet4_address_from_bytes (guint8 bytes[])
 220 {
 221   GInet4Address *address = G_INET4_ADDRESS (g_object_new (G_TYPE_INET4_ADDRESS, NULL));
 222
 223   guint8 *addr = address->priv->addr.u4_addr8;
 224
 225   addr[0] = bytes[0];
 226   addr[1] = bytes[1];
 227   addr[2] = bytes[2];
 228   addr[3] = bytes[3];
 229
 230   return address;
 231 }
 232
 233 const guint8 *
 234 g_inet4_address_to_bytes (GInet4Address *address)
 235 {
 236   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), NULL);
 237
 238   return address->priv->addr.u4_addr8;
 239 }
 240
 241 GInet4Address *
 242 g_inet4_address_new_loopback (void)
 243 {
 244   guint8 addr[4] = {127, 0, 0, 1};
 245
 246   return g_inet4_address_from_bytes (addr);
 247 }
 248
 249 GInet4Address *
 250 g_inet4_address_new_any (void)
 251 {
 252   guint8 addr[4] = {0, 0, 0, 0};
 253
 254   return g_inet4_address_from_bytes (addr);
 255 }