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//
// Mono.Security.Protocol.Ntlm.Type1Message - Negotiation
//
// Author:
// Sebastien Pouliot <sebastien@ximian.com>
// Atsushi Enomoto <atsushi@ximian.com>
//
// (C) 2003 Motus Technologies Inc. (http://www.motus.com)
// Copyright (C) 2004, 2007 Novell, Inc (http://www.novell.com)
//
// References
// a. NTLM Authentication Scheme for HTTP, Ronald Tschalär
// http://www.innovation.ch/java/ntlm.html
// b. The NTLM Authentication Protocol, Copyright © 2003 Eric Glass
// http://davenport.sourceforge.net/ntlm.html
//
// 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.Globalization;
using System.Text;
namespace Mono.Security.Protocol.Ntlm {
public class Type1Message : MessageBase {
private string _host;
private string _domain;
public Type1Message () : this (NtlmVersion.Version2)
{
}
public Type1Message (NtlmVersion version) : base (1, version)
{
// default values
_domain = Environment.UserDomainName;
_host = Environment.MachineName;
Flags = (NtlmFlags) 0xb203;
}
public Type1Message (byte[] message) : this (message, NtlmVersion.Version2)
{
}
public Type1Message (byte[] message, NtlmVersion version) : base (1, version)
{
Decode (message);
}
// properties
public string Domain {
get { return _domain; }
set { _domain = value; }
}
public string Host {
get { return _host; }
set { _host = value; }
}
// methods
protected override void Decode (byte[] message)
{
base.Decode (message);
Flags = (NtlmFlags) BitConverterLE.ToUInt32 (message, 12);
if (Version == NtlmVersion.Version1)
return;
int dom_len = BitConverterLE.ToUInt16 (message, 16);
int dom_off = BitConverterLE.ToUInt16 (message, 20);
_domain = Encoding.ASCII.GetString (message, dom_off, dom_len);
int host_len = BitConverterLE.ToUInt16 (message, 24);
int host_off = BitConverterLE.ToUInt16 (message, 28);
_host = Encoding.ASCII.GetString (message, host_off, host_len);
if (Version != NtlmVersion.Version3)
return;
OSVersion = CreateSubArray (message, 32, 8);
}
public override byte[] GetBytes ()
{
short dom_len = 0, host_len = 0;
if (Version != NtlmVersion.Version1) {
dom_len = (short) _domain.Length;
host_len = (short) _host.Length;
}
int headSize = (Version == NtlmVersion.Version3 ? 40 : 32);
byte[] data = PrepareMessage (headSize + dom_len + host_len);
// v1 contains only the flags.
if (Version == NtlmVersion.Version1)
return data;
data [12] = (byte) Flags;
data [13] = (byte)((uint)Flags >> 8);
data [14] = (byte)((uint)Flags >> 16);
data [15] = (byte)((uint)Flags >> 24);
int dom_off = (headSize + host_len);
data [16] = (byte) dom_len;
data [17] = (byte)(dom_len >> 8);
data [18] = data [16];
data [19] = data [17];
data [20] = (byte) dom_off;
data [21] = (byte)(dom_off >> 8);
data [22] = (byte)(dom_off >> 16);
data [23] = (byte)(dom_off >> 24);
int host_off = headSize;
data [24] = (byte) host_len;
data [25] = (byte)(host_len >> 8);
data [26] = data [24];
data [27] = data [25];
data [28] = (byte) host_off;
data [29] = (byte)(host_off >> 8);
data [30] = (byte)(host_off >> 16);
data [31] = (byte)(host_off >> 24);
if (Version == NtlmVersion.Version3)
Buffer.BlockCopy (OSVersion, 0, data, 32, OSVersion.Length);
byte[] host = Encoding.ASCII.GetBytes (_host.ToUpper (CultureInfo.InvariantCulture));
Buffer.BlockCopy (host, 0, data, host_off, host.Length);
byte[] domain = Encoding.ASCII.GetBytes (_domain.ToUpper (CultureInfo.InvariantCulture));
Buffer.BlockCopy (domain, 0, data, dom_off, domain.Length);
return data;
}
}
}
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