mcs/class/System/System.Net.NetworkInformation/IPAddressCollection.cs

   1 //
   2 // System.Net.NetworkInformation.IPAddressCollection
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@novell.com)
   6 //      Atsushi Enomoto (atsushi@ximian.com)
   7 //
   8 // Copyright (c) 2006-2007 Novell, Inc. (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29 using System;
  30 using System.Collections;
  31 using System.Collections.Generic;
  32 using System.Net;
  33 using System.Runtime.InteropServices;
  34
  35 namespace System.Net.NetworkInformation {
  36
  37 #if !MOBILE
  38         class Win32IPAddressCollection : IPAddressCollection
  39         {
  40                 public static readonly Win32IPAddressCollection Empty = new Win32IPAddressCollection (IntPtr.Zero);
  41
  42                 bool is_readonly;
  43
  44                 // for static methods
  45                 Win32IPAddressCollection ()
  46                 {
  47                 }
  48
  49                 public Win32IPAddressCollection (params IntPtr [] heads)
  50                 {
  51                         foreach (IntPtr head in heads)
  52                                 AddSubsequentlyString (head);
  53                         is_readonly = true;
  54                 }
  55
  56                 public Win32IPAddressCollection (params Win32_IP_ADDR_STRING [] al)
  57                 {
  58                         foreach (Win32_IP_ADDR_STRING a in al) {
  59                                 if (String.IsNullOrEmpty (a.IpAddress))
  60                                         continue;
  61                                 Add (IPAddress.Parse (a.IpAddress));
  62                                 AddSubsequentlyString (a.Next);
  63                         }
  64                         is_readonly = true;
  65                 }
  66
  67                 public static Win32IPAddressCollection FromAnycast (IntPtr ptr)
  68                 {
  69                         Win32IPAddressCollection c = new Win32IPAddressCollection ();
  70                         Win32_IP_ADAPTER_ANYCAST_ADDRESS a;
  71                         for (IntPtr p = ptr; p != IntPtr.Zero; p = a.Next) {
  72                                 a = (Win32_IP_ADAPTER_ANYCAST_ADDRESS) Marshal.PtrToStructure (p, typeof (Win32_IP_ADAPTER_ANYCAST_ADDRESS));
  73                                 c.Add (a.Address.GetIPAddress ());
  74                         }
  75                         c.is_readonly = true;
  76                         return c;
  77                 }
  78
  79                 public static Win32IPAddressCollection FromDnsServer (IntPtr ptr)
  80                 {
  81                         Win32IPAddressCollection c = new Win32IPAddressCollection ();
  82                         Win32_IP_ADAPTER_DNS_SERVER_ADDRESS a;
  83                         for (IntPtr p = ptr; p != IntPtr.Zero; p = a.Next) {
  84                                 a = (Win32_IP_ADAPTER_DNS_SERVER_ADDRESS) Marshal.PtrToStructure (p, typeof (Win32_IP_ADAPTER_DNS_SERVER_ADDRESS));
  85 // FIXME: It somehow fails here. Looks like there is something wrong.
  86 //if (a.Address.Sockaddr == IntPtr.Zero) throw new Exception ("pointer " + p + " a.length " + a.Address.SockaddrLength);
  87                                 c.Add (a.Address.GetIPAddress ());
  88                         }
  89                         c.is_readonly = true;
  90                         return c;
  91                 }
  92
  93                 void AddSubsequentlyString (IntPtr head)
  94                 {
  95                         Win32_IP_ADDR_STRING a;
  96                         for (IntPtr p = head; p != IntPtr.Zero; p = a.Next) {
  97                                 a = (Win32_IP_ADDR_STRING) Marshal.PtrToStructure (p, typeof (Win32_IP_ADDR_STRING));
  98                                 Add (IPAddress.Parse (a.IpAddress));
  99                         }
 100                 }
 101
 102                 public override bool IsReadOnly {
 103                         get { return is_readonly; }
 104                 }
 105         }
 106 #endif
 107 }
 108
 109