/* Copyright (C) 2014-2017 Tal Aloni . All rights reserved. * * You can redistribute this program and/or modify it under the terms of * the GNU Lesser Public License as published by the Free Software Foundation, * either version 3 of the License, or (at your option) any later version. */ using System; using System.Collections.Generic; using System.Text; using Utilities; namespace SMBLibrary.SMB1 { /// /// SMB_COM_NT_CREATE_ANDX Request /// public class NTCreateAndXRequest : SMBAndXCommand { public const int ParametersLength = 48; // Parameters: //CommandName AndXCommand; //byte AndXReserved; //ushort AndXOffset; public byte Reserved; //ushort NameLength; // in bytes public NTCreateFlags Flags; public uint RootDirectoryFID; public FileAccessMask DesiredAccess; public long AllocationSize; public ExtendedFileAttributes ExtFileAttributes; public ShareAccess ShareAccess; public CreateDisposition CreateDisposition; public CreateOptions CreateOptions; public ImpersonationLevel ImpersonationLevel; public SecurityFlags SecurityFlags; // Data: public string FileName; // SMB_STRING (If Unicode, this field MUST be aligned to start on a 2-byte boundary from the start of the SMB header) public NTCreateAndXRequest() : base() { } public NTCreateAndXRequest(byte[] buffer, int offset, bool isUnicode) : base(buffer, offset, isUnicode) { Reserved = ByteReader.ReadByte(this.SMBParameters, 4); ushort nameLength = LittleEndianConverter.ToUInt16(this.SMBParameters, 5); Flags = (NTCreateFlags)LittleEndianConverter.ToUInt32(this.SMBParameters, 7); RootDirectoryFID = LittleEndianConverter.ToUInt32(this.SMBParameters, 11); DesiredAccess = (FileAccessMask)LittleEndianConverter.ToUInt32(this.SMBParameters, 15); AllocationSize = LittleEndianConverter.ToInt64(this.SMBParameters, 19); ExtFileAttributes = (ExtendedFileAttributes)LittleEndianConverter.ToUInt32(this.SMBParameters, 27); ShareAccess = (ShareAccess)LittleEndianConverter.ToUInt32(this.SMBParameters, 31); CreateDisposition = (CreateDisposition)LittleEndianConverter.ToUInt32(this.SMBParameters, 35); CreateOptions = (CreateOptions)LittleEndianConverter.ToUInt32(this.SMBParameters, 39); ImpersonationLevel = (ImpersonationLevel)LittleEndianConverter.ToUInt32(this.SMBParameters, 43); SecurityFlags = (SecurityFlags)ByteReader.ReadByte(this.SMBParameters, 47); int dataOffset = 0; if (isUnicode) { dataOffset = 1; // 1 byte padding for 2 byte alignment } FileName = SMB1Helper.ReadSMBString(this.SMBData, dataOffset, isUnicode); } public override byte[] GetBytes(bool isUnicode) { ushort nameLength = (ushort)FileName.Length; this.SMBParameters = new byte[ParametersLength]; ByteWriter.WriteByte(this.SMBParameters, 0, (byte)AndXCommand); ByteWriter.WriteByte(this.SMBParameters, 1, AndXReserved); LittleEndianWriter.WriteUInt16(this.SMBParameters, 2, AndXOffset); ByteWriter.WriteByte(this.SMBParameters, 4, Reserved); LittleEndianWriter.WriteUInt16(this.SMBParameters, 5, nameLength); LittleEndianWriter.WriteUInt32(this.SMBParameters, 7, (uint)Flags); LittleEndianWriter.WriteUInt32(this.SMBParameters, 11, RootDirectoryFID); LittleEndianWriter.WriteUInt32(this.SMBParameters, 15, (uint)DesiredAccess); LittleEndianWriter.WriteInt64(this.SMBParameters, 19, AllocationSize); LittleEndianWriter.WriteUInt32(this.SMBParameters, 27, (uint)ExtFileAttributes); LittleEndianWriter.WriteUInt32(this.SMBParameters, 31, (uint)ShareAccess); LittleEndianWriter.WriteUInt32(this.SMBParameters, 35, (uint)CreateDisposition); LittleEndianWriter.WriteUInt32(this.SMBParameters, 39, (uint)CreateOptions); LittleEndianWriter.WriteUInt32(this.SMBParameters, 43, (uint)ImpersonationLevel); ByteWriter.WriteByte(this.SMBParameters, 47, (byte)SecurityFlags); if (isUnicode) { int padding = 1; this.SMBData = new byte[padding + FileName.Length * 2 + 2]; int offset = padding; ByteWriter.WriteNullTerminatedUTF16String(this.SMBData, offset, FileName); } else { this.SMBData = new byte[FileName.Length + 1]; ByteWriter.WriteNullTerminatedUTF16String(this.SMBData, 0, FileName); } return base.GetBytes(isUnicode); } public override CommandName CommandName { get { return CommandName.SMB_COM_NT_CREATE_ANDX; } } } }