/// <summary>
/// Deep copy constructor.
/// </summary>
public SmbReadRequestPacket(SmbReadRequestPacket packet)
: base(packet)
{
this.InitDefaultValue();
this.smbParameters.WordCount = packet.SmbParameters.WordCount;
this.smbParameters.FID = packet.SmbParameters.FID;
this.smbParameters.CountOfBytesToRead = packet.SmbParameters.CountOfBytesToRead;
this.smbParameters.ReadOffsetInBytes = packet.SmbParameters.ReadOffsetInBytes;
this.smbParameters.EstimateOfRemainingBytesToBeRead =
packet.smbParameters.EstimateOfRemainingBytesToBeRead;
this.smbData.ByteCount = packet.SmbData.ByteCount;
}
/// <summary>
/// Deep copy constructor.
/// </summary>
public SmbReadRequestPacket(SmbReadRequestPacket packet)
: base(packet)
{
this.InitDefaultValue();
this.smbParameters.WordCount = packet.SmbParameters.WordCount;
this.smbParameters.FID = packet.SmbParameters.FID;
this.smbParameters.CountOfBytesToRead = packet.SmbParameters.CountOfBytesToRead;
this.smbParameters.ReadOffsetInBytes = packet.SmbParameters.ReadOffsetInBytes;
this.smbParameters.EstimateOfRemainingBytesToBeRead =
packet.smbParameters.EstimateOfRemainingBytesToBeRead;
this.smbData.ByteCount = packet.SmbData.ByteCount;
}
/// <summary>
/// to create a Read request packet.
/// </summary>
/// <param name="messageId">This field SHOULD be the multiplex ID that is used to associate a response with a
/// request.</param>
/// <param name="uid">This field SHOULD identify the authenticated instance of the user.</param>
/// <param name="treeId">This field identifies the subdirectory (or tree) on the server that the client is
/// accessing.</param>
/// <param name="flags">An 8-bit field of 1-bit flags describing various features in effect for the
/// message</param>
/// <param name="flags2">A 16-bit field of 1-bit flags that represent various features in effect for the
/// message. Unspecified bits are reserved and MUST be zero.</param>
/// <param name="fid">This field MUST be a valid 16-bit signed integer indicating the file from which the data
/// MUST be read.</param>
/// <param name="countOfBytesToRead">This field is a 16-bit unsigned integer indicating the number of bytes to
/// be read from the file. The client MUST ensure that the amount of data requested will fit in the negotiated
/// maximum buffer size</param>
/// <param name="readOffsetInBytes">This field is a 32-bit unsigned integer indicating the offset in number of
/// bytes from which to begin reading from the file. The client MUST ensure that the amount of data requested
/// fits in the negotiated maximum buffer size. Because this field is limited to 32-bits this command is
/// inappropriate for files having 64-bit offsets</param>
/// <param name="estimateOfRemainingBytesToBeRead">This field is a 16-bit unsigned integer indicating the
/// remaining number of bytes that the client intends to read from the file. This is an advisory field and MAY
/// be zero</param>
/// <returns>a Read request packet</returns>
public SmbReadRequestPacket CreateReadRequest(
ushort messageId,
ushort uid,
ushort treeId,
SmbFlags flags,
SmbFlags2 flags2,
ushort fid,
ushort countOfBytesToRead,
uint readOffsetInBytes,
ushort estimateOfRemainingBytesToBeRead)
{
SmbReadRequestPacket packet = new SmbReadRequestPacket();
packet.SmbHeader = CifsMessageUtils.CreateSmbHeader(SmbCommand.SMB_COM_READ,
messageId, uid, treeId, flags, flags2);
SMB_COM_READ_Request_SMB_Parameters smbParameters = new SMB_COM_READ_Request_SMB_Parameters();
smbParameters.FID = fid;
smbParameters.CountOfBytesToRead = countOfBytesToRead;
smbParameters.ReadOffsetInBytes = readOffsetInBytes;
smbParameters.EstimateOfRemainingBytesToBeRead = estimateOfRemainingBytesToBeRead;
smbParameters.WordCount = (byte)(Marshal.SizeOf(smbParameters) / NumBytesOfWord);
SMB_COM_READ_Request_SMB_Data smbData = new SMB_COM_READ_Request_SMB_Data();
smbData.ByteCount = 0;
packet.SmbParameters = smbParameters;
packet.SmbData = smbData;
return packet;
}
public SmbReadResponsePacket CreateReadResponse(
CifsServerPerConnection connection,
SmbReadRequestPacket request,
byte[] bytes)
{
bytes = bytes ?? new byte[0];
SmbReadResponsePacket response = new SmbReadResponsePacket();
response.SmbHeader = CifsMessageUtils.CreateSmbHeader(connection, request);
SMB_COM_READ_Response_SMB_Parameters smbParameters = response.SmbParameters;
smbParameters.CountOfBytesReturned = (ushort)bytes.Length;
smbParameters.Reserved = new ushort[4];
smbParameters.WordCount = (byte)(TypeMarshal.GetBlockMemorySize(smbParameters) / 2);
response.SmbParameters = smbParameters;
SMB_COM_READ_Response_SMB_Data smbData = response.SmbData;
smbData.ByteCount = (ushort)(Marshal.SizeOf(response.SmbData.BufferFormat) + Marshal.SizeOf(
response.SmbData.CountOfBytesRead) + bytes.Length);
smbData.CountOfBytesRead = (ushort)bytes.Length;
smbData.BufferFormat = 0x01;
smbData.Bytes = bytes;
response.SmbData = smbData;
return response;
}
