//recursively descend through resource directory structure
//resource directories are 3 levels deep by Microsoft convention:
//level 1 : resource type
//level 2 : resource name str/id num
//level 3 : language (aka code page)
private void parseResourceDirectory(SourceFile source, int level)
{
//parse IMAGE_RESOURCE_DIRECTORY
uint characteristics = source.getFour(); //unused
uint timeDateStamp = source.getFour();
uint majorVersion = source.getTwo();
uint minorVersion = source.getTwo();
uint numberOfNamedEntries = source.getTwo();
uint numberOfIdEntries = source.getTwo();
int entryCount = (int)(numberOfNamedEntries + numberOfIdEntries);
for (int i = 0; i < entryCount; i++)
{
uint idName = source.getFour(); //either numeric val or a ptr to name str
uint data = source.getFour(); //either ptr to subdir or a leaf node
resIdNameValues[level] = idName; //store id/name val at this level
uint curPos = source.getPos(); //save cur pos in resource directory
uint dataPos = (data & 0x7FFFFFFF);
source.seek(dataPos); //goto leaf/subtree data
if (data < 0x80000000) //high bit not set -> data points to leaf node
{
parseResourceData(source);
}
else
{ //high bit is set -> data points to subtree
parseResourceDirectory(source, level + 1); //recurse next subtree
}
source.seek(curPos); //ret to pos in resource directory
}
}
//- reading in ----------------------------------------------------------------
public void readCoffHeader(SourceFile source)
{
machine = (int)source.getTwo();
sectionCount = (int)source.getTwo();
timeStamp = source.getFour();
symbolTblAddr = source.getFour();
symbolCount = source.getFour();
optionalHdrSize = (int)source.getTwo();
characteristics = (int)source.getTwo();
}
public static ResImageGroupDataEntry parseData(SourceFile src)
{
ResImageGroupDataEntry cgdata = new ResImageGroupDataEntry();
cgdata.bWidth = src.getOne();
cgdata.bHeight = src.getOne();
cgdata.bColorCount = src.getOne();
uint res = src.getOne();
cgdata.wPlanes = src.getTwo();
cgdata.wBitCount = src.getTwo();
cgdata.dwBytesInRes = src.getFour();
cgdata.nID = src.getTwo();
cgdata.image = null;
return(cgdata);
}
public static ResImageGroupData parseData(byte[] resdata)
{
ResImageGroupData igdata = new ResImageGroupData();
SourceFile src = new SourceFile(resdata);
uint res = src.getTwo();
uint type = src.getTwo();
int count = (int)src.getTwo();
igdata.entries = new List <ResImageGroupDataEntry>(count);
for (int i = 0; i < count; i++)
{
ResImageGroupDataEntry igentry = ResImageGroupDataEntry.parseData(src);
igdata.entries.Add(igentry);
}
return(igdata);
}
private void readOptionalHeader(SourceFile source)
{
magicNum = source.getTwo();
majorLinkerVersion = source.getOne();
minorLinkerVersion = source.getOne();
sizeOfCode = source.getFour();
sizeOfInitializedData = source.getFour();
sizeOfUninitializedData = source.getFour();
addressOfEntryPoint = source.getFour();
baseOfCode = source.getFour();
baseOfData = source.getFour();
imageBase = source.getFour();
sectionAlignment = source.getFour();
fileAlignment = source.getFour();
majorOSVersion = source.getTwo();
minorOSVersion = source.getTwo();
majorImageVersion = source.getTwo();
minorImageVersion = source.getTwo();
majorSubsystemVersion = source.getTwo();
minorSubsystemVersion = source.getTwo();
win32VersionValue = source.getFour();
sizeOfImage = source.getFour();
sizeOfHeaders = source.getFour();
checksum = source.getFour();
subsystem = source.getTwo();
dLLCharacteristics = source.getTwo();
sizeOfStackReserve = source.getFour();
sizeOfStackCommit = source.getFour();
sizeOfHeapReserve = source.getFour();
sizeOfHeapCommit = source.getFour();
loaderFlags = source.getFour();
numberOfRvaAndSizes = source.getFour();
dExportTable = DataDirectory.readDataDirectory(source);
dImportTable = DataDirectory.readDataDirectory(source);
dResourceTable = DataDirectory.readDataDirectory(source);
exceptionTable = DataDirectory.readDataDirectory(source);
certificatesTable = DataDirectory.readDataDirectory(source);
baseRelocationTable = DataDirectory.readDataDirectory(source);
debugTable = DataDirectory.readDataDirectory(source);
architecture = DataDirectory.readDataDirectory(source);
globalPtr = DataDirectory.readDataDirectory(source);
threadLocalStorageTable = DataDirectory.readDataDirectory(source);
loadConfigurationTable = DataDirectory.readDataDirectory(source);
boundImportTable = DataDirectory.readDataDirectory(source);
importAddressTable = DataDirectory.readDataDirectory(source);
delayImportDescriptor = DataDirectory.readDataDirectory(source);
CLRRuntimeHeader = DataDirectory.readDataDirectory(source);
reserved = DataDirectory.readDataDirectory(source);
}
//- reading in ----------------------------------------------------------------
public static Section loadSection(SourceFile source)
{
Section section = new Section();
section.secName = source.getAsciiString(8);
section.memsize = source.getFour();
section.memloc = source.getFour();
section.filesize = source.getFour();
section.fileloc = source.getFour();
section.pRelocations = source.getFour();
section.pLinenums = source.getFour();
section.relocCount = (int)source.getTwo();
section.linenumCount = (int)source.getTwo();
section.flags = source.getFour();
section.data = source.getRange(section.fileloc, section.filesize); //load section data
return(section);
}
private String getResourceName(SourceFile source, uint pos)
{
uint curPos = source.getPos();
pos = (pos & 0x7FFFFFFF);
source.seek(pos);
int strLen = (int)source.getTwo();
pos += 2;
StringBuilder str = new StringBuilder(strLen);
for (int i = 0; i < strLen; i++)
{
uint ch = source.getTwo();
str.Append(Convert.ToChar(ch));
pos += 2;
}
source.seek(curPos);
return(str.ToString());
}
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);
}
