/// <summary> /// to create a WriteAndUnlock 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 to which the data /// MUST be written</param> /// <param name="writeOffsetInBytes">This field is a 32-bit unsigned integer indicating the offset in number of /// bytes from the beginning of the file at which to begin writing to the file. The client MUST ensure that the /// amount of data sent can fit 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="estimateOfRemainingBytesToBeWritten">This field is a 16-bit unsigned integer indicating the /// remaining number of bytes the client anticipates to write to the file. This is an advisory field and MAY be /// zero. This information can be used by the server to optimize cache behavior.</param> /// <param name="data">The raw bytes to be written to the file</param> /// <returns> a WriteAndUnlock request packet</returns> public SmbWriteAndUnlockRequestPacket CreateWriteAndUnlockRequest( ushort messageId, ushort uid, ushort treeId, SmbFlags flags, SmbFlags2 flags2, ushort fid, uint writeOffsetInBytes, ushort estimateOfRemainingBytesToBeWritten, byte[] data) { if (data == null) { data = new byte[0]; } SmbWriteAndUnlockRequestPacket packet = new SmbWriteAndUnlockRequestPacket(); packet.SmbHeader = CifsMessageUtils.CreateSmbHeader(SmbCommand.SMB_COM_WRITE_AND_UNLOCK, messageId, uid, treeId, flags, flags2); SMB_COM_WRITE_AND_UNLOCK_Request_SMB_Parameters smbParameters = new SMB_COM_WRITE_AND_UNLOCK_Request_SMB_Parameters(); smbParameters.FID = fid; smbParameters.CountOfBytesToWrite = (ushort)data.Length; smbParameters.WriteOffsetInBytes = writeOffsetInBytes; smbParameters.EstimateOfRemainingBytesToBeWritten = estimateOfRemainingBytesToBeWritten; smbParameters.WordCount = (byte)(Marshal.SizeOf(smbParameters) / NumBytesOfWord); SMB_COM_WRITE_AND_UNLOCK_Request_SMB_Data smbData = new SMB_COM_WRITE_AND_UNLOCK_Request_SMB_Data(); smbData.BufferFormat = (byte)DataBufferFormat.DataBuffer; smbData.DataLength = (ushort)data.Length; smbData.Data = data; smbData.ByteCount = (ushort)(Marshal.SizeOf(smbData.BufferFormat) + Marshal.SizeOf(smbData.DataLength) + smbData.DataLength); packet.SmbParameters = smbParameters; packet.SmbData = smbData; return packet; }
/// <summary> /// to decode the smb parameters: from the general SmbParameters to the concrete Smb Parameters. /// </summary> protected override void DecodeParameters() { this.smbParameters = TypeMarshal.ToStruct<SMB_COM_WRITE_AND_UNLOCK_Request_SMB_Parameters>( TypeMarshal.ToBytes(this.smbParametersBlock)); }