class/System/System.Net.NetworkInformation/UnicastIPAddressInformation.cs

   1 //
   2 // System.Net.NetworkInformation.UnicastIPAddressInformation
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@novell.com)
   6 //      Atsushi Enomoto (atsushi@ximian.com)
   7 //      Eric Butler (eric@extremeboredom.net)
   8 //
   9 // Copyright (c) 2006-2007 Novell, Inc. (http://www.novell.com)
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30 #if NET_2_0
  31 using System;
  32 using System.Runtime.InteropServices;
  33
  34 namespace System.Net.NetworkInformation {
  35         public abstract class UnicastIPAddressInformation : IPAddressInformation {
  36                 protected UnicastIPAddressInformation ()
  37                 {
  38                 }
  39
  40                 public abstract long AddressPreferredLifetime { get; }
  41                 public abstract long AddressValidLifetime { get; }
  42                 public abstract long DhcpLeaseLifetime { get; }
  43                 public abstract DuplicateAddressDetectionState DuplicateAddressDetectionState { get; }
  44                 public abstract IPAddress IPv4Mask { get; }
  45                 public abstract PrefixOrigin PrefixOrigin { get; }
  46                 public abstract SuffixOrigin SuffixOrigin { get; }
  47         }
  48
  49         class Win32UnicastIPAddressInformation : UnicastIPAddressInformation
  50         {
  51                 int if_index;
  52                 Win32_IP_ADAPTER_UNICAST_ADDRESS info;
  53
  54                 public Win32UnicastIPAddressInformation (int ifIndex, Win32_IP_ADAPTER_UNICAST_ADDRESS info)
  55                 {
  56                         this.if_index = ifIndex;
  57                         this.info = info;
  58                 }
  59
  60                 public override IPAddress Address {
  61                         get { return info.Address.GetIPAddress (); }
  62                 }
  63
  64                 public override bool IsDnsEligible {
  65                         get { return info.LengthFlags.IsDnsEligible; }
  66                 }
  67
  68                 public override bool IsTransient {
  69                         get { return info.LengthFlags.IsTransient; }
  70                 }
  71
  72                 // UnicastIPAddressInformation members
  73
  74                 public override long AddressPreferredLifetime {
  75                         get { return info.PreferredLifetime; }
  76                 }
  77
  78                 public override long AddressValidLifetime {
  79                         get { return info.ValidLifetime; }
  80                 }
  81
  82                 public override long DhcpLeaseLifetime {
  83                         get { return info.LeaseLifetime; }
  84                 }
  85
  86                 public override DuplicateAddressDetectionState DuplicateAddressDetectionState {
  87                         get { return info.DadState; }
  88                 }
  89
  90                 public override IPAddress IPv4Mask {
  91                         get {
  92                                 Win32_IP_ADAPTER_INFO ai = Win32NetworkInterface2.GetAdapterInfoByIndex (if_index);
  93                                 if (ai == null)
  94                                         throw new Exception ("huh? " + if_index);
  95                                 if (this.Address == null)
  96                                         return null;
  97                                 string expected = this.Address.ToString ();
  98                                 unsafe {
  99                                         Win32_IP_ADDR_STRING p = ai.IpAddressList;
 100                                         while (true) {
 101                                                 if (p.IpAddress == expected)
 102                                                         return IPAddress.Parse (p.IpMask);
 103                                                 if (p.Next == IntPtr.Zero)
 104                                                         break;
 105                                                 p = (Win32_IP_ADDR_STRING) Marshal.PtrToStructure (p.Next, typeof (Win32_IP_ADDR_STRING));
 106                                         }
 107
 108                                         // Or whatever it should be...
 109                                         return null;
 110                                 }
 111                         }
 112                 }
 113
 114                 public override PrefixOrigin PrefixOrigin {
 115                         get { return info.PrefixOrigin; }
 116                 }
 117
 118                 public override SuffixOrigin SuffixOrigin {
 119                         get { return info.SuffixOrigin; }
 120                 }
 121         }
 122
 123         class LinuxUnicastIPAddressInformation : UnicastIPAddressInformation
 124         {
 125                 IPAddress address;
 126
 127                 public LinuxUnicastIPAddressInformation (IPAddress address)
 128                 {
 129                         this.address = address;
 130                 }
 131
 132                 public override IPAddress Address {
 133                         get { return address; }
 134                 }
 135
 136                 public override bool IsDnsEligible {
 137                         get {
 138                                 byte[] addressBytes = address.GetAddressBytes ();
 139                                 return !(addressBytes[0] == 169 && addressBytes[1] == 254);
 140                         }
 141                 }
 142
 143                 [MonoTODO("Always returns false")]
 144                 public override bool IsTransient {
 145                         get { return false; }
 146                 }
 147
 148                 // UnicastIPAddressInformation members
 149
 150                 public override long AddressPreferredLifetime {
 151                         get { throw new NotImplementedException (); }
 152                 }
 153
 154                 public override long AddressValidLifetime {
 155                         get { throw new NotImplementedException (); }
 156                 }
 157
 158                 public override long DhcpLeaseLifetime {
 159                         get { throw new NotImplementedException (); }
 160                 }
 161
 162                 public override DuplicateAddressDetectionState DuplicateAddressDetectionState {
 163                         get { throw new NotImplementedException (); }
 164                 }
 165
 166                 public override IPAddress IPv4Mask {
 167                         get { throw new NotImplementedException (); }
 168                 }
 169
 170                 public override PrefixOrigin PrefixOrigin {
 171                         get { throw new NotImplementedException (); }
 172                 }
 173
 174                 public override SuffixOrigin SuffixOrigin {
 175                         get { throw new NotImplementedException (); }
 176                 }
 177         }
 178 }
 179 #endif
 180