/// <summary>
/// Deep copy constructor.
/// </summary>
public SmbWriteAndCloseResponsePacket(SmbWriteAndCloseResponsePacket packet)
: base(packet)
{
this.InitDefaultValue();
this.smbParameters.WordCount = packet.SmbParameters.WordCount;
this.smbParameters.CountOfBytesWritten = packet.SmbParameters.CountOfBytesWritten;
this.smbData.ByteCount = packet.SmbData.ByteCount;
}
/// <summary>
/// Deep copy constructor.
/// </summary>
public SmbWriteAndCloseResponsePacket(SmbWriteAndCloseResponsePacket packet)
: base(packet)
{
this.InitDefaultValue();
this.smbParameters.WordCount = packet.SmbParameters.WordCount;
this.smbParameters.CountOfBytesWritten = packet.SmbParameters.CountOfBytesWritten;
this.smbData.ByteCount = packet.SmbData.ByteCount;
}
/// <summary>
/// decode packet from bytes
/// </summary>
/// <param name="connectId">the connection identity.</param>
/// <param name="messageBytes">bytes contains packet</param>
/// <param name="consumedLength">the bytes length which are consumed when decode.</param>
/// <returns>the decoded packet from the bytes array. if failed, return null.</returns>
protected SmbPacket DecodeSmbResponseFromBytes(
int connectId,
byte[] messageBytes,
out int consumedLength)
{
consumedLength = 0;
SmbPacket smbRequest = null;
SmbPacket smbResponse = null;
using (MemoryStream memoryStream = new MemoryStream(messageBytes, true))
{
using (Channel channel = new Channel(null, memoryStream))
{
// read raw response:
Collection <SmbPacket> outstandingRequests = this.clientContext.GetOutstandingRequests(connectId);
if (outstandingRequests != null && outstandingRequests.Count > 0)
{
SmbReadRawRequestPacket readRawRequest = outstandingRequests[0] as SmbReadRawRequestPacket;
if (readRawRequest != null)
{
SmbReadRawResponsePacket readRawResponse = this.CreateSmbResponsePacket(
readRawRequest, readRawRequest.SmbHeader, channel) as SmbReadRawResponsePacket;
if (readRawResponse != null)
{
byte[] rawData = new byte[messageBytes.Length];
Array.Copy(messageBytes, rawData, rawData.Length);
readRawResponse.RawData = rawData;
consumedLength = rawData.Length;
return(readRawResponse);
}
else
{
// discard the none-parsable data silently:
consumedLength = messageBytes.Length;
return(null);
}
}
else
{
// No SmbReadRawResponsePacket sent, so the response should not be SmbReadRawResponsePacket.
// and do nothing here.
}
}
// read smb header and new SmbPacket:
if (channel.Stream.Position < channel.Stream.Length &&
messageBytes.Length >= CifsMessageUtils.GetSize <SmbHeader>(new SmbHeader()))
{
SmbHeader smbHeader = channel.Read <SmbHeader>();
smbRequest = this.clientContext.GetOutstandingRequest(connectId, smbHeader.Mid);
smbResponse = this.CreateSmbResponsePacket(smbRequest, smbHeader, channel);
consumedLength += smbResponse.HeaderSize;
}
else
{
// The data in the channel is less than the size of SmbHeader. consume nothing and return null:
consumedLength = 0;
return(null);
}
// read SmbParameters:
consumedLength += smbResponse.ReadParametersFromChannel(channel);
// read SmbData:
consumedLength += smbResponse.ReadDataFromChannel(channel);
// read andx:
SmbBatchedResponsePacket smbBatchedResponse = smbResponse as SmbBatchedResponsePacket;
if (smbRequest != null && smbBatchedResponse != null)
{
consumedLength += DecodeBatchedRequest(channel, smbRequest, smbBatchedResponse);
}
// handle the difference of protocol implementation:
SmbWriteAndCloseResponsePacket writeAndCloseResponse = smbResponse as SmbWriteAndCloseResponsePacket;
if (writeAndCloseResponse != null)
{
if (this.clientConfig.IsWriteAndCloseResponseExtraPadding)
{
// Windows NT Server appends three NULL bytes to this message, following the ByteCount field.
// These three bytes are not message data and can safely be discarded.
const int PaddingLength = 3;
writeAndCloseResponse.PaddingBytes = channel.ReadBytes(PaddingLength);
consumedLength += PaddingLength;
}
}
}
}
return(smbResponse);
}
public SmbWriteAndCloseResponsePacket CreateWriteAndCloseResponse(
CifsServerPerConnection connection,
SmbWriteAndCloseRequestPacket request)
{
SmbWriteAndCloseResponsePacket response = new SmbWriteAndCloseResponsePacket();
response.SmbHeader = CifsMessageUtils.CreateSmbHeader(connection, request);
SMB_COM_WRITE_AND_CLOSE_Response_SMB_Parameters smbParameters = response.SmbParameters;
smbParameters.CountOfBytesWritten = request.SmbParameters.CountOfBytesToWrite;
smbParameters.WordCount = (byte)(TypeMarshal.GetBlockMemorySize(smbParameters) / 2);
response.SmbParameters = smbParameters;
return response;
}
