/// <summary>
/// to create a Open 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="accessMode">A 16-bit field for encoding the requested access mode. See section 3.2.4.5.1
/// for a discussion on sharing modes.</param>
/// <param name="searchAttributes">SMB_FILE_ATTRIBUTES Specifies the type of file desired. This field is
/// used as a search mask. Both the FileName and the SearchAttributes of a file MUST match for the file to
/// be opened. </param>
/// <param name="fileName">STRING A null-terminated string containing the file name of the file to be
/// opened.</param>
/// <returns> to create a Open request packet.</returns>
public SmbOpenRequestPacket CreateOpenRequest(
ushort messageId,
ushort uid,
ushort treeId,
SmbFlags flags,
SmbFlags2 flags2,
AccessMode accessMode,
SmbFileAttributes searchAttributes,
string fileName)
{
if (fileName == null)
{
fileName = string.Empty;
}
SmbOpenRequestPacket packet = new SmbOpenRequestPacket();
packet.SmbHeader = CifsMessageUtils.CreateSmbHeader(SmbCommand.SMB_COM_OPEN,
messageId, uid, treeId, flags, flags2);
SMB_COM_OPEN_Request_SMB_Parameters smbParameters = new SMB_COM_OPEN_Request_SMB_Parameters();
smbParameters.AccessMode = (ushort)accessMode;
smbParameters.SearchAttributes = searchAttributes;
smbParameters.WordCount = (byte)(Marshal.SizeOf(smbParameters) / NumBytesOfWord);
SMB_COM_OPEN_Request_SMB_Data smbData = new SMB_COM_OPEN_Request_SMB_Data();
smbData.BufferFormat = (byte)DataBufferFormat.SmbString;
smbData.FileName = CifsMessageUtils.ToSmbStringBytes(fileName,
(flags2 & SmbFlags2.SMB_FLAGS2_UNICODE) == SmbFlags2.SMB_FLAGS2_UNICODE);
smbData.ByteCount = (ushort)(Marshal.SizeOf(smbData.BufferFormat) + smbData.FileName.Length);
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_OPEN_Request_SMB_Parameters>(
TypeMarshal.ToBytes(this.smbParametersBlock));
}
