UnicastIPAddressInformation.cs :  » 2.6.4-mono-.net-core » System.Net » System » Net » NetworkInformation » C# / CSharp Open Source

//
// System.Net.NetworkInformation.UnicastIPAddressInformation
//
// Authors:
//  Gonzalo Paniagua Javier (gonzalo@novell.com)
//  Atsushi Enomoto (atsushi@ximian.com)
//  Eric Butler (eric@extremeboredom.net)
//
// Copyright (c) 2006-2007 Novell, Inc. (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#if NET_2_0
using System;
using System.Runtime.InteropServices;

namespace System.Net.NetworkInformation{
  public abstract class UnicastIPAddressInformation : IPAddressInformation {
    protected UnicastIPAddressInformation ()
    {
    }
    
    public abstract long AddressPreferredLifetime { get; }
    public abstract long AddressValidLifetime { get; }
    public abstract long DhcpLeaseLifetime { get; }
    public abstract DuplicateAddressDetectionState DuplicateAddressDetectionState { get; }
    public abstract IPAddress IPv4Mask { get; }
    public abstract PrefixOrigin PrefixOrigin { get; }
    public abstract SuffixOrigin SuffixOrigin { get; }
  }

  class Win32UnicastIPAddressInformation : UnicastIPAddressInformation 
  {
    int if_index;
    Win32_IP_ADAPTER_UNICAST_ADDRESS info;

    public Win32UnicastIPAddressInformation (int ifIndex, Win32_IP_ADAPTER_UNICAST_ADDRESS info)
    {
      this.if_index = ifIndex;
      this.info = info;
    }

    public override IPAddress Address {
      get { return info.Address.GetIPAddress (); }
    }

    public override bool IsDnsEligible {
      get { return info.LengthFlags.IsDnsEligible; }
    }

    public override bool IsTransient {
      get { return info.LengthFlags.IsTransient; }
    }

    // UnicastIPAddressInformation members

    public override long AddressPreferredLifetime {
      get { return info.PreferredLifetime; }
    }

    public override long AddressValidLifetime {
      get { return info.ValidLifetime; }
    }

    public override long DhcpLeaseLifetime {
      get { return info.LeaseLifetime; }
    }

    public override DuplicateAddressDetectionState DuplicateAddressDetectionState {
      get { return info.DadState; }
    }

    public override IPAddress IPv4Mask {
      get {
        Win32_IP_ADAPTER_INFO ai = Win32NetworkInterface2.GetAdapterInfoByIndex (if_index);
        if (ai == null)
          throw new Exception ("huh? " + if_index);
        if (this.Address == null)
          return null;
        string expected = this.Address.ToString ();
        unsafe {
          Win32_IP_ADDR_STRING p = ai.IpAddressList;
          while (true) {
            if (p.IpAddress == expected)
              return IPAddress.Parse (p.IpMask);
            if (p.Next == IntPtr.Zero)
              break;
            p = (Win32_IP_ADDR_STRING) Marshal.PtrToStructure (p.Next, typeof (Win32_IP_ADDR_STRING));
          }

          // Or whatever it should be...
          return null;
        }
      }
    }

    public override PrefixOrigin PrefixOrigin {
      get { return info.PrefixOrigin; }
    }

    public override SuffixOrigin SuffixOrigin {
      get { return info.SuffixOrigin; }
    }
  }

  class LinuxUnicastIPAddressInformation : UnicastIPAddressInformation
  {
    IPAddress address;

    public LinuxUnicastIPAddressInformation (IPAddress address)
    {
      this.address = address;
    }

    public override IPAddress Address {
      get { return address; }
    }

    public override bool IsDnsEligible {
      get {
        byte[] addressBytes = address.GetAddressBytes ();
        return !(addressBytes[0] == 169 && addressBytes[1] == 254);
      }
    }

    [MonoTODO("Always returns false")]
    public override bool IsTransient {
      get { return false; }
    }

    // UnicastIPAddressInformation members

    public override long AddressPreferredLifetime {
      get { throw new NotImplementedException (); }
    }

    public override long AddressValidLifetime {
      get { throw new NotImplementedException (); }
    }

    public override long DhcpLeaseLifetime {
      get { throw new NotImplementedException (); }
    }

    public override DuplicateAddressDetectionState DuplicateAddressDetectionState {
      get { throw new NotImplementedException (); }
    }

    public override IPAddress IPv4Mask {
      get { throw new NotImplementedException (); }
    }

    public override PrefixOrigin PrefixOrigin {
      get { throw new NotImplementedException (); }
    }

    public override SuffixOrigin SuffixOrigin {
      get { throw new NotImplementedException (); }
    }
  }
}
#endif