class/System/System.Net.NetworkInformation/IPAddressInformationCollection.cs

   1 //
   2 // System.Net.NetworkInformation.IPAddressInformationCollection
   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 #if NET_2_0
  30 using System;
  31 using System.Collections;
  32 using System.Collections.Generic;
  33 using System.Runtime.InteropServices;
  34
  35 namespace System.Net.NetworkInformation {
  36         public class IPAddressInformationCollection : ICollection<IPAddressInformation>, IEnumerable<IPAddressInformation>, IEnumerable {
  37                 List <IPAddressInformation> list = new List <IPAddressInformation> ();
  38
  39                 internal IPAddressInformationCollection ()
  40                 {
  41                 }
  42
  43                 public virtual void Add (IPAddressInformation address)
  44                 {
  45                         if (IsReadOnly)
  46                                 throw new NotSupportedException ("The collection is read-only.");
  47                         list.Add (address);
  48                 }
  49
  50                 public virtual void Clear ()
  51                 {
  52                         if (IsReadOnly)
  53                                 throw new NotSupportedException ("The collection is read-only.");
  54                         list.Clear ();
  55                 }
  56
  57                 public virtual bool Contains (IPAddressInformation address)
  58                 {
  59                         return list.Contains (address);
  60                 }
  61
  62                 public virtual void CopyTo (IPAddressInformation [] array, int offset)
  63                 {
  64                         list.CopyTo (array, offset);
  65                 }
  66
  67                 public virtual IEnumerator<IPAddressInformation> GetEnumerator ()
  68                 {
  69                         return ((IEnumerable<IPAddressInformation>)list).GetEnumerator ();
  70                 }
  71
  72                 public virtual bool Remove (IPAddressInformation address)
  73                 {
  74                         if (IsReadOnly)
  75                                 throw new NotSupportedException ("The collection is read-only.");
  76                         return list.Remove (address);
  77                 }
  78
  79                 IEnumerator IEnumerable.GetEnumerator ()
  80                 {
  81                         return list.GetEnumerator ();
  82                 }
  83
  84                 public virtual int Count {
  85                         get { return list.Count; }
  86                 }
  87
  88                 public virtual bool IsReadOnly {
  89                         get { return true; }
  90                 }
  91
  92                 public virtual IPAddressInformation this [int index] {
  93                         get { return list [index]; }
  94                 }
  95         }
  96
  97         class IPAddressInformationImplCollection : IPAddressInformationCollection
  98         {
  99                 public static readonly IPAddressInformationImplCollection Empty = new IPAddressInformationImplCollection (true);
 100
 101                 bool is_readonly;
 102
 103                 // for static methods
 104                 IPAddressInformationImplCollection (bool isReadOnly)
 105                 {
 106                         is_readonly = isReadOnly;
 107                 }
 108
 109                 public override bool IsReadOnly {
 110                         get { return is_readonly; }
 111                 }
 112
 113                 public static IPAddressInformationCollection Win32FromAnycast (IntPtr ptr)
 114                 {
 115                         IPAddressInformationImplCollection c = new IPAddressInformationImplCollection (false);
 116                         Win32_IP_ADAPTER_ANYCAST_ADDRESS a;
 117                         for (IntPtr p = ptr; p != IntPtr.Zero; p = a.Next) {
 118                                 a = (Win32_IP_ADAPTER_ANYCAST_ADDRESS) Marshal.PtrToStructure (p, typeof (Win32_IP_ADAPTER_ANYCAST_ADDRESS));
 119                                 c.Add (new IPAddressInformationImpl (
 120                                        a.Address.GetIPAddress (),
 121                                        a.LengthFlags.IsDnsEligible,
 122                                        a.LengthFlags.IsTransient));
 123                         }
 124                         c.is_readonly = true;
 125                         return c;
 126                 }
 127
 128                 public static IPAddressInformationImplCollection LinuxFromAnycast (IList<IPAddress> addresses)
 129                 {
 130                         IPAddressInformationImplCollection c = new IPAddressInformationImplCollection (false);
 131                         foreach (IPAddress address in addresses) {
 132                                 c.Add (new IPAddressInformationImpl (address, false, false));
 133                         }
 134                         c.is_readonly = true;
 135                         return c;
 136                 }
 137         }
 138 }
 139 #endif
 140