/// <summary>
/// find the transaction2 packet.
/// </summary>
/// <param name="command">the command of transaction2 packet.</param>
/// <returns>the target transaction2 packet</returns>
private static SmbPacket FindTheTrans2Packet(Trans2SubCommand command)
{
SmbPacket smbPacket = null;
switch ((Trans2SubCommand)command)
{
case Trans2SubCommand.TRANS2_FIND_FIRST2:
smbPacket = new SmbTrans2FindFirst2RequestPacket();
break;
case Trans2SubCommand.TRANS2_FIND_NEXT2:
smbPacket = new SmbTrans2FindNext2RequestPacket();
break;
case Trans2SubCommand.TRANS2_QUERY_FS_INFORMATION:
smbPacket = new SmbTrans2QueryFsInformationRequestPacket();
break;
case Trans2SubCommand.TRANS2_SET_FS_INFORMATION:
smbPacket = new SmbTrans2SetFsInformationRequestPacket();
break;
case Trans2SubCommand.TRANS2_QUERY_PATH_INFORMATION:
smbPacket = new SmbTrans2QueryPathInformationRequestPacket();
break;
case Trans2SubCommand.TRANS2_SET_PATH_INFORMATION:
smbPacket = new SmbTrans2SetPathInformationRequestPacket();
break;
case Trans2SubCommand.TRANS2_QUERY_FILE_INFORMATION:
smbPacket = new SmbTrans2QueryFileInformationRequestPacket();
break;
case Trans2SubCommand.TRANS2_SET_FILE_INFORMATION:
smbPacket = new SmbTrans2SetFileInformationRequestPacket();
break;
case Trans2SubCommand.TRANS2_GET_DFS_REFERRAL:
smbPacket = new SmbTrans2GetDfsReferralRequestPacket();
break;
default:
break;
}
return(smbPacket);
}
private SmbPacket CreateTransaction2ResponsePacket(SmbPacket request, SmbHeader smbHeader, Channel channel)
{
SmbPacket smbPacket = null;
if (smbHeader.Status == 0 && channel.Peek <byte>(0) == 0 && channel.Peek <ushort>(1) == 0)
{
return(smbPacket);
}
SmbTransaction2RequestPacket transaction2Request = request as SmbTransaction2RequestPacket;
if (transaction2Request == null)
{
return(smbPacket);
}
// if no setup command. break
if (transaction2Request.SmbParameters.SetupCount == 0)
{
return(smbPacket);
}
// decode packet using the setup command
switch ((Trans2SubCommand)transaction2Request.SmbParameters.Setup[0])
{
case Trans2SubCommand.TRANS2_QUERY_FILE_INFORMATION:
SmbTrans2QueryFileInformationRequestPacket queryFileRequest =
transaction2Request as SmbTrans2QueryFileInformationRequestPacket;
if (queryFileRequest != null)
{
smbPacket = new SmbTrans2QueryFileInformationResponsePacket(
queryFileRequest.Trans2Parameters.InformationLevel);
}
break;
case Trans2SubCommand.TRANS2_QUERY_PATH_INFORMATION:
SmbTrans2QueryPathInformationRequestPacket queryPathRequest =
transaction2Request as SmbTrans2QueryPathInformationRequestPacket;
if (queryPathRequest != null)
{
smbPacket = new SmbTrans2QueryPathInformationResponsePacket(
queryPathRequest.Trans2Parameters.InformationLevel);
}
break;
case Trans2SubCommand.TRANS2_SET_FILE_INFORMATION:
smbPacket = new SmbTrans2SetFileInformationResponsePacket();
break;
case Trans2SubCommand.TRANS2_SET_PATH_INFORMATION:
smbPacket = new SmbTrans2SetPathInformationResponsePacket();
break;
case Trans2SubCommand.TRANS2_QUERY_FS_INFORMATION:
SmbTrans2QueryFsInformationRequestPacket queryFsRequest =
transaction2Request as SmbTrans2QueryFsInformationRequestPacket;
if (queryFsRequest != null)
{
smbPacket = new SmbTrans2QueryFsInformationResponsePacket(
queryFsRequest.Trans2Parameters.InformationLevel);
}
break;
case Trans2SubCommand.TRANS2_SET_FS_INFORMATION:
smbPacket = new SmbTrans2SetFsInformationResponsePacket();
break;
case Trans2SubCommand.TRANS2_FIND_FIRST2:
SmbTrans2FindFirst2RequestPacket first2Request =
transaction2Request as SmbTrans2FindFirst2RequestPacket;
if (first2Request != null)
{
smbPacket = new SmbTrans2FindFirst2ResponsePacket(first2Request.Trans2Parameters.InformationLevel,
(first2Request.Trans2Parameters.Flags & Trans2FindFlags.SMB_FIND_RETURN_RESUME_KEYS)
== Trans2FindFlags.SMB_FIND_RETURN_RESUME_KEYS);
}
break;
case Trans2SubCommand.TRANS2_FIND_NEXT2:
SmbTrans2FindNext2RequestPacket next2Request =
transaction2Request as SmbTrans2FindNext2RequestPacket;
if (next2Request != null)
{
smbPacket = new SmbTrans2FindNext2ResponsePacket(next2Request.Trans2Parameters.InformationLevel,
(next2Request.Trans2Parameters.Flags & Trans2FindFlags.SMB_FIND_RETURN_RESUME_KEYS)
== Trans2FindFlags.SMB_FIND_RETURN_RESUME_KEYS);
}
break;
case Trans2SubCommand.TRANS2_GET_DFS_REFERRAL:
smbPacket = new SmbTrans2GetDfsReferralResponsePacket();
break;
default:
break;
}
return(smbPacket);
}