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

   1 //
   2 // System.Net.NetworkInformation.PhysicalAddress
   3 //
   4 // Author:
   5 //      Gonzalo Paniagua Javier (gonzalo@novell.com)
   6 //
   7 // Copyright (c) 2006 Novell, Inc. (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 using System;
  29 using System.Text;
  30 using System.Globalization;
  31
  32 namespace System.Net.NetworkInformation {
  33         public class PhysicalAddress {
  34                 public static readonly PhysicalAddress None = new PhysicalAddress (new byte [0]);
  35                 private const int numberOfBytes = 6;
  36                 byte [] bytes;
  37
  38                 public PhysicalAddress (byte [] address)
  39                 {
  40                         this.bytes = address;
  41                 }
  42
  43                 internal static PhysicalAddress ParseEthernet (string address)
  44                 {
  45                         if (address == null)
  46                                 return None;
  47
  48                         string [] blocks = address.Split (':');
  49                         byte [] bytes = new byte [blocks.Length];
  50                         int i = 0;
  51                         foreach (string b in blocks){
  52                                 bytes [i++] = Byte.Parse (b, NumberStyles.HexNumber);
  53                         }
  54                         return new PhysicalAddress (bytes);
  55                 }
  56
  57                 public static PhysicalAddress Parse (string address)
  58                 {
  59                         if (address == null)
  60                                 return None;
  61
  62                         if (address == string.Empty)
  63                                 throw new FormatException("An invalid physical address was specified.");
  64
  65                         string[] addrSplit = address.Split('-');
  66
  67                         if (addrSplit.Length == 1) {
  68                                 if (address.Length != numberOfBytes * 2)
  69                                         throw new FormatException("An invalid physical address was specified.");
  70
  71                                 addrSplit = new string[numberOfBytes];
  72                                 for (int index = 0; index < addrSplit.Length; index++) {
  73                                         addrSplit[index] = address.Substring(index * 2, 2);
  74                                 }
  75                         }
  76
  77                         if (addrSplit.Length == numberOfBytes) {
  78                                 foreach (string str in addrSplit)
  79                                         if (str.Length > 2)
  80                                                 throw new FormatException("An invalid physical address was specified.");
  81                                         else if (str.Length < 2)
  82                                                 throw new IndexOutOfRangeException("An invalid physical address was specified.");
  83                         }
  84                         else
  85                                 throw new FormatException("An invalid physical address was specified.");
  86
  87                         byte[] data = new byte[numberOfBytes];
  88                         for (int i = 0; i < numberOfBytes; i++) {
  89                                 byte b = (byte)(GetValue(addrSplit[i][0]) << 4);
  90                                 b += GetValue(addrSplit[i][1]);
  91                                 data[i] = b;
  92                         }
  93
  94                         return new PhysicalAddress (data);
  95                 }
  96
  97                 static byte GetValue (char c)
  98                 {
  99                         if (c >= '0' && c <= '9')
 100                                 return (byte) (c - '0');
 101
 102                         if (c >= 'a' && c <= 'f')
 103                                 return (byte) (c - 'a' + 10);
 104
 105                         if (c >= 'A' && c <= 'F')
 106                                 return (byte) (c - 'A' + 10);
 107
 108                         throw new FormatException ("Invalid physical address.");
 109                 }
 110
 111                 public override bool Equals (object comparand)
 112                 {
 113                         PhysicalAddress other = comparand as PhysicalAddress;
 114                         if (other == null)
 115                                 return false;
 116
 117                         if (bytes.Length != other.bytes.Length)
 118                                 return false;
 119
 120                         for (int index = 0; index < bytes.Length; index++)
 121                                 if (bytes[index] != other.bytes[index])
 122                                         return false;
 123
 124                         return true;
 125                 }
 126
 127                 public override int GetHashCode ()
 128                 {
 129                         return (bytes[5] << 8) ^ (bytes[4]) ^ (bytes[3] << 24) ^ (bytes[2] << 16) ^ (bytes[1] << 8) ^ (bytes[0]);
 130                 }
 131
 132                 public byte [] GetAddressBytes ()
 133                 {
 134                         return bytes;
 135                 }
 136
 137                 public override string ToString ()
 138                 {
 139                         if (bytes == null)
 140                                 return "";
 141
 142                         StringBuilder sb = new StringBuilder ();
 143                         foreach (byte b in bytes)
 144                                 sb.AppendFormat("{0:X2}", b);
 145                         return sb.ToString ();
 146                 }
 147         }
 148 }