//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
}
}
public void loadStringTable(SourceFile source)
{
uint pos = symbolTblAddr + (symbolCount * 0x12);
source.seek(pos);
uint len = source.getFour() - 4;
byte[] data = source.getRange(len);
String str = "";
int idx = 4;
for (int i = 0; i < len; i++)
{
if (data[i] != 0)
{
str += (char)data[i];
}
else
{
stringTbl.Add(idx, str);
str = "";
idx = i + 5;
}
}
}
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());
}
//- 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);
}
