mcs/class/Npgsql/Npgsql/NpgsqlPasswordPacket.cs

   1 // created on 10/6/2002 at 21:33
   2
   3 // Npgsql.NpgsqlPasswordPacket.cs
   4 //
   5 // Author:
   6 //      Francisco Jr. (fxjrlists@yahoo.com.br)
   7 //
   8 //      Copyright (C) 2002 The Npgsql Development Team
   9 //      npgsql-general@gborg.postgresql.org
  10 //      http://gborg.postgresql.org/project/npgsql/projdisplay.php
  11 //
  12 //
  13 // This library is free software; you can redistribute it and/or
  14 // modify it under the terms of the GNU Lesser General Public
  15 // License as published by the Free Software Foundation; either
  16 // version 2.1 of the License, or (at your option) any later version.
  17 //
  18 // This library is distributed in the hope that it will be useful,
  19 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21 // Lesser General Public License for more details.
  22 //
  23 // You should have received a copy of the GNU Lesser General Public
  24 // License along with this library; if not, write to the Free Software
  25 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  26
  27
  28 using System;
  29 using System.IO;
  30 using System.Text;
  31 using System.Net;
  32
  33 namespace Npgsql
  34 {
  35     /// <summary>
  36     /// This class represents a PasswordPacket message sent to backend
  37     /// PostgreSQL.
  38     /// </summary>
  39     internal sealed class NpgsqlPasswordPacket
  40     {
  41         // Logging related values
  42         private static readonly String CLASSNAME = "NpgsqlPasswordPacket";
  43
  44         private String password;
  45         private ProtocolVersion protocolVersion;
  46
  47
  48         public NpgsqlPasswordPacket(String password, ProtocolVersion protocolVersion)
  49         {
  50             NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, CLASSNAME);
  51
  52             this.password = password;
  53             this.protocolVersion = protocolVersion;
  54         }
  55
  56         public void WriteToStream(Stream outputStream, Encoding encoding)
  57         {
  58             NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, "WriteToStream");
  59
  60             switch (protocolVersion) {
  61             case ProtocolVersion.Version2 :
  62                 // Write the size of the packet.
  63                 // 4 + (passwordlength + 1) -> Int32 + NULL terminated string.
  64                 // output_stream.Write(BitConverter.GetBytes(IPAddress.HostToNetworkOrder(4 + (password.Length + 1))), 0, 4);
  65                 PGUtil.WriteInt32(outputStream, 4 + encoding.GetByteCount(password) + 1);
  66
  67                 // Write String.
  68                 PGUtil.WriteString(password, outputStream, encoding);
  69
  70                 break;
  71
  72             case ProtocolVersion.Version3 :
  73                 outputStream.WriteByte((Byte)'p');
  74                 PGUtil.WriteInt32(outputStream, 4 + encoding.GetByteCount(password) + 1);
  75
  76                 // Write String.
  77                 PGUtil.WriteString(password, outputStream, encoding);
  78
  79                 break;
  80
  81             }
  82         }
  83     }
  84 }