static public MsDosHeader readMSDOSHeader(SourceFile source)
{
MsDosHeader dosHeader = new MsDosHeader();
dosHeader.signature = source.getTwo();
if (dosHeader.signature != 0x5a4d)
{
throw new Win32ReadException("this is not a valid win32 executable file");
}
dosHeader.lastsize = source.getTwo();
dosHeader.nblocks = source.getTwo();
dosHeader.nreloc = source.getTwo();
dosHeader.hdrsize = source.getTwo();
dosHeader.minalloc = source.getTwo();
dosHeader.maxalloc = source.getTwo();
dosHeader.ss = source.getTwo();
dosHeader.sp = source.getTwo();
dosHeader.checksum = source.getTwo();
dosHeader.ip = source.getTwo();
dosHeader.cs = source.getTwo();
dosHeader.relocpos = source.getTwo();
dosHeader.noverlay = source.getTwo();
dosHeader.reserved1 = source.getRange(8);
dosHeader.oem_id = source.getTwo();
dosHeader.oem_info = source.getTwo();
dosHeader.reserved2 = source.getRange(20);
dosHeader.e_lfanew = source.getFour();
return(dosHeader);
}
//- reading in ----------------------------------------------------------------
public void readFile(String _filename)
{
filename = _filename;
SourceFile source = new SourceFile(filename);
dosHeader = MsDosHeader.readMSDOSHeader(source);
source.seek(dosHeader.e_lfanew);
uint pesig = source.getFour();
if (pesig != 0x00004550)
{
throw new Win32ReadException("this is not a valid win32 executable file");
}
readCoffHeader(source);
readOptionalHeader(source);
loadSections(source);
foreach (Section section in sections)
{
section.imageBase = imageBase; //sections in exe/dll have an image base
}
//getResourceTable(source);
}
public Win32Exe() : base()
{
filename = null;
dosHeader = null;
//optional header fields
magicNum = 0;
majorLinkerVersion = 0;
minorLinkerVersion = 0;
sizeOfCode = 0;
sizeOfInitializedData = 0;
sizeOfUninitializedData = 0;
addressOfEntryPoint = 0;
baseOfCode = 0;
baseOfData = 0;
imageBase = 0;
sectionAlignment = 0;
fileAlignment = 0;
majorOSVersion = 0;
minorOSVersion = 0;
majorImageVersion = 0;
minorImageVersion = 0;
majorSubsystemVersion = 0;
minorSubsystemVersion = 0;
win32VersionValue = 0;
sizeOfImage = 0;
sizeOfHeaders = 0;
checksum = 0;
subsystem = 0;
dLLCharacteristics = 0;
sizeOfStackReserve = 0;
sizeOfStackCommit = 0;
sizeOfHeapReserve = 0;
sizeOfHeapCommit = 0;
loaderFlags = 0;
numberOfRvaAndSizes = 0;
//data directory
dExportTable = null;
dImportTable = null;
dResourceTable = null;
exceptionTable = null;
certificatesTable = null;
baseRelocationTable = null;
debugTable = null;
architecture = null;
globalPtr = null;
threadLocalStorageTable = null;
loadConfigurationTable = null;
boundImportTable = null;
importAddressTable = null;
delayImportDescriptor = null;
CLRRuntimeHeader = null;
reserved = null;
//standard sections
exportTable = null;
importTable = null;
resourceTable = null;
}
//private void getResourceTable(SourceFile source)
//{
// if (optHeader.dataDirectory[DataDirectory.IMAGE_DIRECTORY_ENTRY_RESOURCE].size > 0)
// {
// uint resOfs = optHeader.dataDirectory[DataDirectory.IMAGE_DIRECTORY_ENTRY_RESOURCE].rva;
// uint resSize = optHeader.dataDirectory[DataDirectory.IMAGE_DIRECTORY_ENTRY_RESOURCE].size;
// Section resSec = findSection(resOfs);
// if (resSec != null)
// {
// SourceFile secData = new SourceFile(resSec.data);
// resourceTable = new ResourceTable();
// resourceTable.imageBase = imageBase;
// resourceTable.resourceRVA = resOfs;
// resourceTable.data = secData.getRange(resOfs - resSec.memloc, resSize);
// }
// }
//}
//- writing out ----------------------------------------------------------------
public void layoutImage()
{
dosHeader = new MsDosHeader();
dosHeader.e_lfanew = 0x200;
}
