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ResponseMessage.cs

//
// Gnome.Keyring.ResponseMessage.cs
//
// Authors:
//    Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) Copyright 2006 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.
//

using System;
using System.Collections;
using System.IO;
using System.Text;

using Mono.Unix.Native;

namespace Gnome.Keyring {
      class ResponseMessage {
            byte [] buffer;
            MemoryStream stream;

            public ResponseMessage (byte [] buffer)
            {
                  this.buffer = buffer;
                  stream = new MemoryStream (buffer);
            }

            public bool DataAvailable {
                  get { return (stream.Position < stream.Length); }
            }

            public string [] GetStringList ()
            {
                  int nstrings = GetInt32 ();
                  string [] list = new string [nstrings];
                  for (int i = 0; i < nstrings; i++) {
                        list [i] = GetString ();
                  }

                  return list;
            }

            public string GetString ()
            {
                  int len = GetInt32 ();
                  if (len == -1) {
                        return null;
                  }
                  int offset = (int) stream.Position;
                  string result =  Encoding.UTF8.GetString (buffer, offset, len);
                  stream.Position += len;
                  return result;
            }

            public int GetInt32 ()
            {
                  byte b3 = (byte) stream.ReadByte ();
                  byte b2 = (byte) stream.ReadByte ();
                  byte b1 = (byte) stream.ReadByte ();
                  byte b0 = (byte) stream.ReadByte ();
                  return (b0 + (b1 << 8) + (b2 << 16) + (b3 << 24));
            }

            public DateTime GetDateTime ()
            {
                  return NativeConvert.FromTimeT ((GetInt32 () << 32) + GetInt32 ());
            }

            public void ReadAttributes (Hashtable tbl)
            {
                  int natts = GetInt32 ();
                  for (int i = 0; i < natts; i++) {
                        object val;
                        string name = GetString ();
                        AttributeType type = (AttributeType) GetInt32 ();
                        if (AttributeType.String == type) {
                              val = GetString ();
                        } else if (type == AttributeType.UInt32) {
                              val = GetInt32 ();
                        } else {
                              throw new Exception ("This should not happen: "  + type);
                        }
                        tbl [name] = val;
                  }
            }
      }
}


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