/// <summary>
/// Deep copy constructor.
/// </summary>
public SmbReadAndxRequestPacket(SmbReadAndxRequestPacket packet)
: base(packet)
{
this.InitDefaultValue();
this.smbParameters.WordCount = packet.SmbParameters.WordCount;
this.smbParameters.AndXCommand = packet.SmbParameters.AndXCommand;
this.smbParameters.AndXReserved = packet.SmbParameters.AndXReserved;
this.smbParameters.AndXOffset = packet.SmbParameters.AndXOffset;
this.smbParameters.FID = packet.SmbParameters.FID;
this.smbParameters.Offset = packet.SmbParameters.Offset;
this.smbParameters.MaxNumberOfBytesToReturn = packet.SmbParameters.MaxNumberOfBytesToReturn;
this.smbParameters.MinNumberOfBytesToReturn = packet.SmbParameters.MinNumberOfBytesToReturn;
this.smbParameters.Timeout = packet.SmbParameters.Timeout;
this.smbParameters.Remaining = packet.SmbParameters.Remaining;
this.smbParameters.OffsetHigh = packet.SmbParameters.OffsetHigh;
this.smbData.ByteCount = packet.SmbData.ByteCount;
}
/// <summary>
/// Deep copy constructor.
/// </summary>
public SmbReadAndxRequestPacket(SmbReadAndxRequestPacket packet)
: base(packet)
{
this.InitDefaultValue();
this.smbParameters.WordCount = packet.SmbParameters.WordCount;
this.smbParameters.AndXCommand = packet.SmbParameters.AndXCommand;
this.smbParameters.AndXReserved = packet.SmbParameters.AndXReserved;
this.smbParameters.AndXOffset = packet.SmbParameters.AndXOffset;
this.smbParameters.FID = packet.SmbParameters.FID;
this.smbParameters.Offset = packet.SmbParameters.Offset;
this.smbParameters.MaxNumberOfBytesToReturn = packet.SmbParameters.MaxNumberOfBytesToReturn;
this.smbParameters.MinNumberOfBytesToReturn = packet.SmbParameters.MinNumberOfBytesToReturn;
this.smbParameters.Timeout = packet.SmbParameters.Timeout;
this.smbParameters.Remaining = packet.SmbParameters.Remaining;
this.smbParameters.OffsetHigh = packet.SmbParameters.OffsetHigh;
this.smbData.ByteCount = packet.SmbData.ByteCount;
}
/// <summary>
/// to create a ReadAndx 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 FID indicating the file from which the data MUST be
/// read.</param>
/// <param name="offset">If WordCount is 10 this field represents a 32-bit offset, measured in bytes, of where
/// the read MUST start relative to the beginning of the file. If WordCount is 12 this field represents the
/// lower 32 bits of a 64-bit offset</param>
/// <param name="maxNumberOfBytesToReturn">The maximum number of bytes to read. A single request MAY NOT return
/// more data than the maximum negotiated buffer size for the session. If MaxCountOfBytesToReturn exceeds the
/// maximum negotiated buffer size the server MUST return the number of bytes that fit within the maximum
/// negotiated buffer size</param>
/// <param name="minNumberOfBytesToReturn">USHORT The requested minimum number of bytes to return. This field
/// is used only when reading from a named pipe or a device. It is ignored when reading from a standard
/// file.</param>
/// <param name="timeout">This field represents the amount of time, in milliseconds, that a server MUST wait
/// before sending a response.</param>
/// <param name="offsetHigh">This field is OPTIONAL. If WordCount is 10 this field is not included in the
/// request. If WordCount is 12 this field represents the upper 32 bits of a 64-bit offset, measured in bytes,
/// of where the read SHOULD start relative to the beginning of the file</param>
/// <param name="andxPacket">the andx packet.</param>
/// <returns>a ReadAndx request packet</returns>
public SmbReadAndxRequestPacket CreateReadAndxRequest(
ushort messageId,
ushort uid,
ushort treeId,
SmbFlags flags,
SmbFlags2 flags2,
ushort fid,
uint offset,
ushort maxNumberOfBytesToReturn,
ushort minNumberOfBytesToReturn,
uint timeout,
uint offsetHigh,
SmbPacket andxPacket)
{
SmbReadAndxRequestPacket packet = new SmbReadAndxRequestPacket();
packet.SmbHeader = CifsMessageUtils.CreateSmbHeader(SmbCommand.SMB_COM_READ_ANDX,
messageId, uid, treeId, flags, flags2);
SMB_COM_READ_ANDX_Request_SMB_Parameters smbParameters = new SMB_COM_READ_ANDX_Request_SMB_Parameters();
smbParameters.Remaining = 0;
smbParameters.AndXReserved = 0;
if (andxPacket == null)
{
smbParameters.AndXCommand = SmbCommand.SMB_COM_NO_ANDX_COMMAND;
}
else
{
smbParameters.AndXCommand = andxPacket.SmbHeader.Command;
}
smbParameters.FID = fid;
smbParameters.Offset = offset;
smbParameters.MaxNumberOfBytesToReturn = maxNumberOfBytesToReturn;
smbParameters.MinNumberOfBytesToReturn = minNumberOfBytesToReturn;
smbParameters.Timeout = timeout;
smbParameters.OffsetHigh = offsetHigh;
smbParameters.WordCount = (byte)(Marshal.SizeOf(smbParameters) / NumBytesOfWord);
SMB_COM_READ_ANDX_Request_SMB_Data smbData = new SMB_COM_READ_ANDX_Request_SMB_Data();
smbData.ByteCount = 0;
packet.SmbParameters = smbParameters;
packet.SmbData = smbData;
packet.AndxPacket = andxPacket;
return packet;
}
public SmbReadAndxResponsePacket CreateReadAndxResponse(
CifsServerPerConnection connection,
SmbReadAndxRequestPacket request,
ushort available,
byte[] data,
SmbPacket andxPacket)
{
data = data ?? new byte[0];
SmbReadAndxResponsePacket response = new SmbReadAndxResponsePacket();
response.SmbHeader = CifsMessageUtils.CreateSmbHeader(connection, request);
int padOffset = response.HeaderSize + Marshal.SizeOf(response.SmbParameters)
+ Marshal.SizeOf(response.SmbData.ByteCount);
SMB_COM_READ_ANDX_Response_SMB_Parameters smbParameters = response.SmbParameters;
smbParameters.AndXCommand =
andxPacket != null ? andxPacket.SmbHeader.Command : SmbCommand.SMB_COM_NO_ANDX_COMMAND;
smbParameters.AndXReserved = 0x00;
smbParameters.Available = available;
smbParameters.DataCompactionMode = 0x0000;
smbParameters.Reserved1 = 0x0000;
smbParameters.DataLength = (ushort)data.Length;
smbParameters.DataOffset = (ushort)((padOffset + 3) & ~3);
smbParameters.Reserved2 = new ushort[5];
smbParameters.AndXOffset = (ushort)(((padOffset + 3) & ~3) + data.Length);
smbParameters.WordCount = (byte)(TypeMarshal.GetBlockMemorySize(smbParameters) / 2);
response.SmbParameters = smbParameters;
SMB_COM_READ_ANDX_Response_SMB_Data smbData = response.SmbData;
smbData.Pad = new byte[response.SmbParameters.DataOffset - padOffset];
smbData.Data = data;
smbData.ByteCount = (ushort)(response.SmbParameters.DataOffset + data.Length);
response.SmbData = smbData;
response.AndxPacket = andxPacket;
response.UpdateHeader();
return response;
}
