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 {
  41   union {
  42     guint8  u4_addr8[4];
  43     guint32 u4_addr32;
  44   } addr;
  45 };
  46
  47 static gchar *
  48 g_inet4_address_to_string (GInetAddress *address)
  49 {
  50   guint8 *addr;
  51
  52   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), NULL);
  53
  54   addr = G_INET4_ADDRESS (address)->priv->addr.u4_addr8;
  55
  56   return g_strdup_printf ("%d.%d.%d.%d", addr[0], addr[1], addr[2], addr[3]);
  57 }
  58
  59 static gboolean
  60 g_inet4_address_is_any (GInetAddress *address)
  61 {
  62   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  63
  64   return (g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32) == INADDR_ANY);
  65 }
  66
  67 static gboolean
  68 g_inet4_address_is_linklocal (GInetAddress *address)
  69 {
  70   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  71
  72   return ((g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32) & 0xffff0000) == 0xa9fe0000);
  73 }
  74
  75 static gboolean
  76 g_inet4_address_is_loopback (GInetAddress *address)
  77 {
  78   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  79
  80   return (G_INET4_ADDRESS (address)->priv->addr.u4_addr8[0] == IN_LOOPBACKNET);
  81 }
  82
  83 static gboolean
  84 g_inet4_address_is_sitelocal (GInetAddress *address)
  85 {
  86   guint32 addr;
  87
  88   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  89
  90   addr = g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32);
  91
  92   return ((addr & 0xff000000) == (10 << 24)) || ((addr & 0xfff00000) == 0xac100000) || ((addr & 0xffff0000) == 0xc0a80000);
  93 }
  94
  95 static gboolean
  96 g_inet4_address_is_multicast (GInetAddress *address)
  97 {
  98   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
  99
 100   return IN_MULTICAST (g_ntohl (G_INET4_ADDRESS (address)->priv->addr.u4_addr32));
 101 }
 102
 103 static gboolean
 104 g_inet4_address_is_mc_global (GInetAddress *address)
 105 {
 106   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 107
 108   return FALSE;
 109 }
 110
 111 static gboolean
 112 g_inet4_address_is_mc_linklocal (GInetAddress *address)
 113 {
 114   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 115
 116   return FALSE;
 117 }
 118
 119 static gboolean
 120 g_inet4_address_is_mc_nodelocal (GInetAddress *address)
 121 {
 122   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 123
 124   return FALSE;
 125 }
 126
 127 static gboolean
 128 g_inet4_address_is_mc_orglocal (GInetAddress *address)
 129 {
 130   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 131
 132   return FALSE;
 133 }
 134
 135 static gboolean
 136 g_inet4_address_is_mc_sitelocal (GInetAddress *address)
 137 {
 138   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), FALSE);
 139
 140   return FALSE;
 141 }
 142
 143 static void
 144 g_inet4_address_finalize (GObject *object)
 145 {
 146   GInet4Address *address G_GNUC_UNUSED = G_INET4_ADDRESS (object);
 147
 148   if (G_OBJECT_CLASS (g_inet4_address_parent_class)->finalize)
 149     (*G_OBJECT_CLASS (g_inet4_address_parent_class)->finalize) (object);
 150 }
 151
 152 static void
 153 g_inet4_address_dispose (GObject *object)
 154 {
 155   GInet4Address *address G_GNUC_UNUSED = G_INET4_ADDRESS (object);;
 156
 157   if (G_OBJECT_CLASS (g_inet4_address_parent_class)->dispose)
 158     (*G_OBJECT_CLASS (g_inet4_address_parent_class)->dispose) (object);
 159 }
 160
 161 static void
 162 g_inet4_address_class_init (GInet4AddressClass *klass)
 163 {
 164   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 165   GInetAddressClass *ginetaddress_class = G_INET_ADDRESS_CLASS (klass);
 166
 167   g_type_class_add_private (klass, sizeof (GInet4AddressPrivate));
 168
 169   gobject_class->finalize = g_inet4_address_finalize;
 170   gobject_class->dispose = g_inet4_address_dispose;
 171
 172   ginetaddress_class->to_string = g_inet4_address_to_string;
 173   ginetaddress_class->is_any = g_inet4_address_is_any;
 174   ginetaddress_class->is_linklocal = g_inet4_address_is_linklocal;
 175   ginetaddress_class->is_loopback = g_inet4_address_is_loopback;
 176   ginetaddress_class->is_sitelocal = g_inet4_address_is_sitelocal;
 177   ginetaddress_class->is_multicast = g_inet4_address_is_multicast;
 178   ginetaddress_class->is_mc_global = g_inet4_address_is_mc_global;
 179   ginetaddress_class->is_mc_linklocal = g_inet4_address_is_mc_linklocal;
 180   ginetaddress_class->is_mc_nodelocal = g_inet4_address_is_mc_nodelocal;
 181   ginetaddress_class->is_mc_orglocal = g_inet4_address_is_mc_orglocal;
 182   ginetaddress_class->is_mc_sitelocal = g_inet4_address_is_mc_sitelocal;
 183 }
 184
 185 static void
 186 g_inet4_address_init (GInet4Address *address)
 187 {
 188   address->priv = G_TYPE_INSTANCE_GET_PRIVATE (address,
 189                                                G_TYPE_INET4_ADDRESS,
 190                                                GInet4AddressPrivate);
 191 }
 192
 193 /* ************************************************************************* */
 194 /* Public Functions */
 195
 196 GInet4Address *
 197 g_inet4_address_from_string (const gchar *string)
 198 {
 199   struct in_addr addr;
 200
 201 #ifndef G_OS_WIN32
 202   if (!inet_aton (string, &addr))
 203     {
 204       g_warning ("Could not parse IP address %s", string);
 205       return NULL;
 206     }
 207 #else
 208   addr.s_addr = inet_addr (string);
 209   if (addr.s_addr == INADDR_NONE)
 210     {
 211       g_warning ("Could not parse IP address %s", string);
 212       return NULL;
 213     }
 214 #endif
 215
 216   return g_inet4_address_from_bytes ((guint8 *) &(addr.s_addr));
 217 }
 218
 219 GInet4Address *
 220 g_inet4_address_from_bytes (guint8 bytes[])
 221 {
 222   GInet4Address *address = G_INET4_ADDRESS (g_object_new (G_TYPE_INET4_ADDRESS, NULL));
 223
 224   guint8 *addr = address->priv->addr.u4_addr8;
 225
 226   addr[0] = bytes[0];
 227   addr[1] = bytes[1];
 228   addr[2] = bytes[2];
 229   addr[3] = bytes[3];
 230
 231   return address;
 232 }
 233
 234 const guint8 *
 235 g_inet4_address_to_bytes (GInet4Address *address)
 236 {
 237   g_return_val_if_fail (G_IS_INET4_ADDRESS (address), NULL);
 238
 239   return address->priv->addr.u4_addr8;
 240 }
 241
 242 GInet4Address *
 243 g_inet4_address_new_loopback (void)
 244 {
 245   guint8 addr[4] = {127, 0, 0, 1};
 246
 247   return g_inet4_address_from_bytes (addr);
 248 }
 249
 250 GInet4Address *
 251 g_inet4_address_new_any (void)
 252 {
 253   guint8 addr[4] = {0, 0, 0, 0};
 254
 255   return g_inet4_address_from_bytes (addr);
 256 }