public void ReadOptionalHeader(ImageReader rdr, short expectedMagic)
{
if (optionalHeaderSize <= 0)
throw new BadImageFormatException("Optional header size should be larger than 0 in a PE executable image file.");
short magic = rdr.ReadLeInt16();
if (magic != expectedMagic)
throw new BadImageFormatException("Not a valid PE Header.");
rdr.ReadByte(); // Linker major version
rdr.ReadByte(); // Linker minor version
rdr.ReadLeUInt32(); // code size (== .text section size)
rdr.ReadLeUInt32(); // size of initialized data
rdr.ReadLeUInt32(); // size of uninitialized data
rvaStartAddress = rdr.ReadLeUInt32();
uint rvaBaseOfCode = rdr.ReadLeUInt32();
preferredBaseOfImage = innerLoader.ReadPreferredImageBase(rdr);
rdr.ReadLeUInt32(); // section alignment
rdr.ReadLeUInt32(); // file alignment
rdr.ReadLeUInt16(); // OS major version
rdr.ReadLeUInt16(); // OS minor version
rdr.ReadLeUInt16(); // Image major version
rdr.ReadLeUInt16(); // Image minor version
rdr.ReadLeUInt16(); // Subsystem major version
rdr.ReadLeUInt16(); // Subsystem minor version
rdr.ReadLeUInt32(); // reserved
uint sizeOfImage = rdr.ReadLeUInt32();
uint sizeOfHeaders = rdr.ReadLeUInt32();
uint checksum = rdr.ReadLeUInt32();
ushort subsystem = rdr.ReadLeUInt16();
ushort dllFlags = rdr.ReadLeUInt16();
var stackReserve = rdr.Read(arch.WordWidth);
var stackCommit = rdr.Read(arch.WordWidth);
var heapReserve = rdr.Read(arch.WordWidth);
var heapCommit = rdr.Read(arch.WordWidth);
rdr.ReadLeUInt32(); // loader flags
uint dictionaryCount = rdr.ReadLeUInt32();
if (dictionaryCount == 0) return;
rvaExportTable = rdr.ReadLeUInt32();
sizeExportTable = rdr.ReadLeUInt32();
if (--dictionaryCount == 0) return;
rvaImportTable = rdr.ReadLeUInt32();
uint importTableSize = rdr.ReadLeUInt32();
if (--dictionaryCount == 0) return;
rvaResources = rdr.ReadLeUInt32(); // resource address
rdr.ReadLeUInt32(); // resource size
if (--dictionaryCount == 0) return;
rvaExceptionTable = rdr.ReadLeUInt32(); // exception address
sizeExceptionTable = rdr.ReadLeUInt32(); // exception size
if (--dictionaryCount == 0) return;
rdr.ReadLeUInt32(); // certificate address
rdr.ReadLeUInt32(); // certificate size
if (--dictionaryCount == 0) return;
uint rvaBaseRelocAddress = rdr.ReadLeUInt32();
uint baseRelocSize = rdr.ReadLeUInt32();
if (--dictionaryCount == 0) return;
uint rvaDebug = rdr.ReadLeUInt32();
uint cbDebug = rdr.ReadLeUInt32();
if (--dictionaryCount == 0) return;
uint rvaArchitecture = rdr.ReadLeUInt32();
uint cbArchitecture = rdr.ReadLeUInt32();
if (--dictionaryCount == 0) return;
uint rvaGlobalPointer = rdr.ReadLeUInt32();
uint cbGlobalPointer = rdr.ReadLeUInt32();
if (--dictionaryCount == 0) return;
uint rvaTls = rdr.ReadLeUInt32();
uint cbTls = rdr.ReadLeUInt32();
if (--dictionaryCount == 0) return;
uint rvaLoadConfig = rdr.ReadLeUInt32();
uint cbLoadConfig = rdr.ReadLeUInt32();
if (--dictionaryCount == 0) return;
uint rvaBoundImport = rdr.ReadLeUInt32();
uint cbBoundImport = rdr.ReadLeUInt32();
if (--dictionaryCount == 0) return;
uint rvaIat = rdr.ReadLeUInt32();
uint cbIat = rdr.ReadLeUInt32();
if (--dictionaryCount == 0) return;
this.rvaDelayImportDescriptor = rdr.ReadLeUInt32();
uint cbDelayImportDescriptor = rdr.ReadLeUInt32();
}
public override int Read(byte[] buffer, int offset, int count) {
return rdr.Read(buffer, offset, count);
}
