public static void WriteCreateContextList(byte[] buffer, int offset, List <CreateContext> createContexts)
{
for (int index = 0; index < createContexts.Count; index++)
{
CreateContext createContext = createContexts[index];
int length = createContext.Length;
int paddedLength = (int)Math.Ceiling((double)length / 8) * 8;
if (index < createContexts.Count - 1)
{
createContext.Next = (uint)paddedLength;
}
else
{
createContext.Next = 0;
}
createContext.WriteBytes(buffer, offset);
offset += paddedLength;
}
}
public static int GetCreateContextListLength(List <CreateContext> createContexts)
{
int result = 0;
for (int index = 0; index < createContexts.Count; index++)
{
CreateContext createContext = createContexts[index];
int length = createContext.Length;
if (index < createContexts.Count - 1)
{
int paddedLength = (int)Math.Ceiling((double)length / 8) * 8;
result += paddedLength;
}
else
{
result += length;
}
}
return(result);
}
public CreateResponse(byte[] buffer, int offset) : base(buffer, offset)
{
StructureSize = LittleEndianConverter.ToUInt16(buffer, offset + SMB2Header.Length + 0);
OplockLevel = (OplockLevel)ByteReader.ReadByte(buffer, offset + SMB2Header.Length + 2);
Flags = (CreateResponseFlags)ByteReader.ReadByte(buffer, offset + SMB2Header.Length + 3);
CreateAction = (CreateAction)LittleEndianConverter.ToUInt32(buffer, offset + SMB2Header.Length + 4);
CreationTime = FileTimeHelper.ReadNullableFileTime(buffer, offset + SMB2Header.Length + 8);
LastAccessTime = FileTimeHelper.ReadNullableFileTime(buffer, offset + SMB2Header.Length + 16);
LastWriteTime = FileTimeHelper.ReadNullableFileTime(buffer, offset + SMB2Header.Length + 24);
ChangeTime = FileTimeHelper.ReadNullableFileTime(buffer, offset + SMB2Header.Length + 32);
AllocationSize = LittleEndianConverter.ToInt64(buffer, offset + SMB2Header.Length + 40);
EndofFile = LittleEndianConverter.ToInt64(buffer, offset + SMB2Header.Length + 48);
FileAttributes = (FileAttributes)LittleEndianConverter.ToUInt32(buffer, offset + SMB2Header.Length + 56);
Reserved2 = LittleEndianConverter.ToUInt32(buffer, offset + SMB2Header.Length + 60);
FileId = new FileID(buffer, offset + SMB2Header.Length + 64);
CreateContextsOffsets = LittleEndianConverter.ToUInt32(buffer, offset + SMB2Header.Length + 80);
CreateContextsLength = LittleEndianConverter.ToUInt32(buffer, offset + SMB2Header.Length + 84);
if (CreateContextsLength > 0)
{
CreateContexts = CreateContext.ReadCreateContextList(buffer, offset + (int)CreateContextsOffsets);
}
}
public CreateRequest(byte[] buffer, int offset) : base(buffer, offset)
{
StructureSize = LittleEndianConverter.ToUInt16(buffer, offset + SMB2Header.Length + 0);
SecurityFlags = ByteReader.ReadByte(buffer, offset + SMB2Header.Length + 2);
RequestedOplockLevel = (OplockLevel)ByteReader.ReadByte(buffer, offset + SMB2Header.Length + 3);
ImpersonationLevel = (ImpersonationLevel)LittleEndianConverter.ToUInt32(buffer, offset + SMB2Header.Length + 4);
SmbCreateFlags = LittleEndianConverter.ToUInt64(buffer, offset + SMB2Header.Length + 8);
Reserved = LittleEndianConverter.ToUInt64(buffer, offset + SMB2Header.Length + 16);
DesiredAccess = new AccessMask(buffer, offset + SMB2Header.Length + 24);
FileAttributes = (FileAttributes)LittleEndianConverter.ToUInt32(buffer, offset + SMB2Header.Length + 28);
ShareAccess = (ShareAccess)LittleEndianConverter.ToUInt32(buffer, offset + SMB2Header.Length + 32);
CreateDisposition = (CreateDisposition)LittleEndianConverter.ToUInt32(buffer, offset + SMB2Header.Length + 36);
CreateOptions = (CreateOptions)LittleEndianConverter.ToUInt32(buffer, offset + SMB2Header.Length + 40);
NameOffset = LittleEndianConverter.ToUInt16(buffer, offset + SMB2Header.Length + 44);
NameLength = LittleEndianConverter.ToUInt16(buffer, offset + SMB2Header.Length + 46);
CreateContextsOffsets = LittleEndianConverter.ToUInt32(buffer, offset + SMB2Header.Length + 48);
CreateContextsLength = LittleEndianConverter.ToUInt32(buffer, offset + SMB2Header.Length + 52);
Name = ByteReader.ReadUTF16String(buffer, offset + NameOffset, NameLength / 2);
if (CreateContextsLength > 0)
{
CreateContexts = CreateContext.ReadCreateContextList(buffer, (int)CreateContextsOffsets);
}
}
public override void WriteCommandBytes(byte[] buffer, int offset)
{
LittleEndianWriter.WriteUInt16(buffer, offset + 0, StructureSize);
ByteWriter.WriteByte(buffer, offset + 2, (byte)OplockLevel);
ByteWriter.WriteByte(buffer, offset + 3, (byte)Flags);
LittleEndianWriter.WriteUInt32(buffer, offset + 4, (uint)CreateAction);
FileTimeHelper.WriteFileTime(buffer, offset + 8, CreationTime);
FileTimeHelper.WriteFileTime(buffer, offset + 16, LastAccessTime);
FileTimeHelper.WriteFileTime(buffer, offset + 24, LastWriteTime);
FileTimeHelper.WriteFileTime(buffer, offset + 32, ChangeTime);
LittleEndianWriter.WriteInt64(buffer, offset + 40, AllocationSize);
LittleEndianWriter.WriteInt64(buffer, offset + 48, EndofFile);
LittleEndianWriter.WriteUInt32(buffer, offset + 56, (uint)FileAttributes);
LittleEndianWriter.WriteUInt32(buffer, offset + 60, Reserved2);
FileId.WriteBytes(buffer, offset + 64);
CreateContextsOffsets = 0;
CreateContextsLength = (uint)CreateContext.GetCreateContextListLength(CreateContexts);
if (CreateContexts.Count > 0)
{
CreateContextsOffsets = SMB2Header.Length + 88;
CreateContext.WriteCreateContextList(buffer, 88, CreateContexts);
}
}