public OptionalHeader(AssemblyBuffer buffer)
{
this.Magic = buffer.ReadWord();
this.MajorLinkerVersion = buffer.ReadByte();
this.MinorLinkerVersion = buffer.ReadByte();
this.SizeOfCode = buffer.ReadDWord();
this.SizeOfInitializedData = buffer.ReadDWord();
this.SizeOfUninitializedData = buffer.ReadDWord();
this.AddressOfEntryPoint = buffer.ReadDWord();
this.BaseOfCode = buffer.ReadDWord();
this.BaseOfData = buffer.ReadDWord();
this.ImageBase = buffer.ReadDWord();
this.SectionAlignment = buffer.ReadDWord();
this.FileAlignment = buffer.ReadDWord();
this.MajorOperatingSystemVersion = buffer.ReadWord();
this.MinorOperatingSystemVersion = buffer.ReadWord();
this.MajorImageVersion = buffer.ReadWord();
this.MinorImageVersion = buffer.ReadWord();
this.MajorSubsystemVersion = buffer.ReadWord();
this.MinorSubsystemVersion = buffer.ReadWord();
this.Win32VersionValue = buffer.ReadDWord();
this.SizeOfImage = buffer.ReadDWord();
this.SizeOfHeaders = buffer.ReadDWord();
this.CheckSum = buffer.ReadDWord();
this.Subsystem = buffer.ReadWord();
this.DllCharacteristics = buffer.ReadWord();
this.SizeOfStackReserve = buffer.ReadDWord();
this.SizeOfStackCommit = buffer.ReadDWord();
this.SizeOfHeapReserve = buffer.ReadDWord();
this.SizeOfHeapCommit = buffer.ReadDWord();
this.LoaderFlags = buffer.ReadDWord();
this.NumberOfRvaAndSizes = buffer.ReadDWord();
this.DataDirectories = new DataDirectory[ImageNumberOfDirectoryEntries];
for (int i = 0; i < ImageNumberOfDirectoryEntries; i++)
{
this.DataDirectories[i] = new DataDirectory(buffer);
}
}
public void PopulateFields(AssemblyBuffer buffer)
{
SignatureLength = buffer.ReadByte();
CallingType = (CallingConvention)buffer.ReadByte();
if (CallingType.IsGeneric())
{
//TODO: Handle generic values.
buffer.ReadByte();
}
byte paramCount = buffer.ReadByte();
ReturnType.PopulateFields(buffer);
PopulateParameters(buffer, paramCount);
}
public override void ProcessTables(AssemblyBuffer buffer)
{
buffer.SetIndexPointer(this.AbsoluteAddress);
uint val = buffer.ReadDWord(); // Reserved.
byte major = buffer.ReadByte(); // Major and minor version
byte minor = buffer.ReadByte(); // Major and minor version
this.HeapOffsetSizes = buffer.ReadByte(); // Bit flags for the heap index width. Ref: https://www.codeproject.com/Articles/12585/The-NET-File-Format
buffer.ReadByte(); // Padding byte.
this.TablesPresent = buffer.ReadQWord(); // We need to read all of the tables present in the assembly
this.TablesSorted = buffer.ReadQWord(); // What tables are sorted
this.TableRowTypes = this.GetPopulatedTableRowTypes();
// Check which types apply to the current stream.
for (int i = 0; i < 64; i++)
{
if (!Enum.IsDefined(typeof(MetaDataTableType), i))
{
continue;
}
var tableType = (MetaDataTableType)i;
var bitmask = (ulong)1 << (int)tableType;
if ((this.TablesPresent & bitmask) != 0 || bitmask == 0)
{
this.TableLengths[(ulong)tableType] = buffer.ReadDWord();
}
}
this.PopulateTableRows(buffer);
}
private void ReadFunctionBody(AssemblyBuffer buffer)
{
List <byte> methodBody = new List <byte>();
while (true)
{
byte opCode = buffer.ReadByte();
methodBody.Add(opCode);
if (opCode == 0x2A)
{
break; // When we reach "return" we know this is the end of the function.
}
}
this.MethodBody = methodBody;
}
public void PopulateFields(AssemblyBuffer buffer)
{
this.Type = (TypeConstant)buffer.ReadByte();
}