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// This code is derived from jcifs smb client library <jcifs at samba dot org>
// Ported by J. Arturo <webmaster at komodosoft dot net>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using SharpCifs.Util;
using SharpCifs.Util.Sharpen;
namespace SharpCifs.Smb
{
internal class SmbComNegotiateResponse : ServerMessageBlock
{
internal int DialectIndex;
internal SmbTransport.ServerData Server;
internal SmbComNegotiateResponse(SmbTransport.ServerData server)
{
this.Server = server;
}
internal override int WriteParameterWordsWireFormat(byte[] dst, int dstIndex)
{
return 0;
}
internal override int WriteBytesWireFormat(byte[] dst, int dstIndex)
{
return 0;
}
internal override int ReadParameterWordsWireFormat(byte[] buffer, int bufferIndex
)
{
int start = bufferIndex;
DialectIndex = ReadInt2(buffer, bufferIndex);
bufferIndex += 2;
if (DialectIndex > 10)
{
return bufferIndex - start;
}
Server.SecurityMode = buffer[bufferIndex++] & unchecked(0xFF);
Server.Security = Server.SecurityMode & unchecked(0x01);
Server.EncryptedPasswords = (Server.SecurityMode & unchecked(0x02)) == unchecked(
0x02);
Server.SignaturesEnabled = (Server.SecurityMode & unchecked(0x04)) == unchecked(
0x04);
Server.SignaturesRequired = (Server.SecurityMode & unchecked(0x08)) == unchecked(
0x08);
Server.MaxMpxCount = ReadInt2(buffer, bufferIndex);
bufferIndex += 2;
Server.MaxNumberVcs = ReadInt2(buffer, bufferIndex);
bufferIndex += 2;
Server.MaxBufferSize = ReadInt4(buffer, bufferIndex);
bufferIndex += 4;
Server.MaxRawSize = ReadInt4(buffer, bufferIndex);
bufferIndex += 4;
Server.SessionKey = ReadInt4(buffer, bufferIndex);
bufferIndex += 4;
Server.Capabilities = ReadInt4(buffer, bufferIndex);
bufferIndex += 4;
Server.ServerTime = ReadTime(buffer, bufferIndex);
bufferIndex += 8;
Server.ServerTimeZone = ReadInt2(buffer, bufferIndex);
bufferIndex += 2;
Server.EncryptionKeyLength = buffer[bufferIndex++] & unchecked(0xFF);
return bufferIndex - start;
}
internal override int ReadBytesWireFormat(byte[] buffer, int bufferIndex)
{
int start = bufferIndex;
if ((Server.Capabilities & SmbConstants.CapExtendedSecurity) == 0)
{
Server.EncryptionKey = new byte[Server.EncryptionKeyLength];
Array.Copy(buffer, bufferIndex, Server.EncryptionKey, 0, Server.EncryptionKeyLength
);
bufferIndex += Server.EncryptionKeyLength;
if (ByteCount > Server.EncryptionKeyLength)
{
int len = 0;
// TODO: we can use new string routine here
try
{
if ((Flags2 & SmbConstants.Flags2Unicode) == SmbConstants.Flags2Unicode)
{
while (buffer[bufferIndex + len] != unchecked(unchecked(0x00)) || buffer
[bufferIndex + len + 1] != unchecked(unchecked(0x00)))
{
len += 2;
if (len > 256)
{
throw new RuntimeException("zero termination not found");
}
}
Server.OemDomainName = Runtime.GetStringForBytes(buffer, bufferIndex, len
, SmbConstants.UniEncoding);
}
else
{
while (buffer[bufferIndex + len] != unchecked(unchecked(0x00)))
{
len++;
if (len > 256)
{
throw new RuntimeException("zero termination not found");
}
}
Server.OemDomainName = Runtime.GetStringForBytes(buffer, bufferIndex, len
, SmbConstants.OemEncoding);
}
}
catch (UnsupportedEncodingException uee)
{
if (Log.Level > 1)
{
Runtime.PrintStackTrace(uee, Log);
}
}
bufferIndex += len;
}
else
{
Server.OemDomainName = "";
}
}
else
{
Server.Guid = new byte[16];
Array.Copy(buffer, bufferIndex, Server.Guid, 0, 16);
Server.OemDomainName = "";
}
// ignore SPNEGO token for now ...
return bufferIndex - start;
}
public override string ToString()
{
return "SmbComNegotiateResponse[" + base.ToString() + ",wordCount=" +
WordCount + ",dialectIndex=" + DialectIndex + ",securityMode=0x" + Hexdump.ToHexString
(Server.SecurityMode, 1) + ",security=" + (Server.Security == SmbConstants.SecurityShare ? "share"
: "user") + ",encryptedPasswords=" + Server.EncryptedPasswords + ",maxMpxCount="
+ Server.MaxMpxCount + ",maxNumberVcs=" + Server.MaxNumberVcs + ",maxBufferSize="
+ Server.MaxBufferSize + ",maxRawSize=" + Server.MaxRawSize + ",sessionKey=0x"
+ Hexdump.ToHexString(Server.SessionKey, 8) + ",capabilities=0x" + Hexdump.ToHexString
(Server.Capabilities, 8) + ",serverTime=" + Extensions.CreateDate(Server
.ServerTime) + ",serverTimeZone=" + Server.ServerTimeZone + ",encryptionKeyLength="
+ Server.EncryptionKeyLength + ",byteCount=" + ByteCount + ",oemDomainName=" +
Server.OemDomainName + "]";
}
}
}
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