static public MsDosHeader readMSDOSHeader(BinaryIn source)
{
MsDosHeader dosHeader = new MsDosHeader();
dosHeader.signature = source.getTwo();
if (dosHeader.signature != 0x5a4d)
{
throw new Win32FormatException("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 static CoffSection readSection(BinaryIn source)
{
string name = source.getAsciiString(8);
CoffSection sec = new CoffSection(name);
sec.memSize = source.getFour();
sec.memPos = source.getFour();
sec.fileSize = source.getFour();
sec.filePos = source.getFour();
sec.relocTblPos = source.getFour();
uint skip1 = source.getFour(); //line numbers are deprecated
sec.relocTblCount = source.getTwo();
uint skip2 = source.getTwo();
uint flagval = source.getFour();
sec.settings = SectionSettings.decodeFlags(flagval);
uint mark = source.getPos();
source.seek(sec.filePos);
byte[] secdata = source.getRange(sec.fileSize);
sec.data = new List <byte>(secdata);
source.seek(mark);
return(sec);
}
//- reading in --------------------------------------------------------
internal static OboeBlock loadSection(BinaryIn infile, uint secaddr, uint secsize, uint sectype)
{
infile.seek(secaddr);
String blockname = infile.getAsciiZString();
OboeBlock block = new OboeBlock(blockname, sectype);
uint blockaddr = infile.getFour();
uint blocksize = infile.getFour();
uint importaddr = infile.getFour();
uint importcount = infile.getFour();
uint exportaddr = infile.getFour();
uint exportcount = infile.getFour();
//block data
infile.seek(blockaddr);
block.blockdata = new List <byte>(infile.getRange(blocksize));
//import list
infile.seek(importaddr);
for (int i = 0; i < importcount; i++)
{
ImportEntry imp = ImportEntry.loadFromFile(infile);
block.imports.Add(imp);
}
//export list
infile.seek(exportaddr);
for (int i = 0; i < exportcount; i++)
{
ExportEntry exp = ExportEntry.loadFromFile(infile);
block.exports.Add(exp);
}
return(block);
}
public static Win32Obj readFromFile(String filename)
{
Win32Obj objfile = new Win32Obj(filename);
BinaryIn source = new BinaryIn(filename);
//coff header
objfile.machine = (MachineType)source.getTwo();
uint sectionCount = source.getTwo();
objfile.timeStamp = source.getFour();
uint symbolTblAddr = source.getFour();
uint symbolCount = source.getFour();
uint optionalHdrSize = source.getTwo();
objfile.characteristics = (int)source.getTwo();
//string tbl - follows symbol tbl
uint strtblpos = symbolTblAddr + symbolCount * CoffSymbol.SYMTBLENTRYSIZE;
source.seek(strtblpos);
byte[] strtbl = null;
uint len = source.getFour();
if (len > 4)
{
source.seek(strtblpos);
strtbl = source.getRange(len);
}
//section tbl
source.seek(COFFHDRSIZE);
for (int i = 0; i < sectionCount; i++)
{
//if section name is stored in string tbl, we read in index & let caller deref the actual name
String secname = source.getAsciiString(8);
if (secname[0] == '/')
{
int stridx = Int32.Parse(secname.Substring(1));
secname = readString(strtbl, stridx);
}
//read section hdr field
uint memSize = source.getFour(); //don't use - 0 in object files
uint memPos = source.getFour();
uint fileSize = source.getFour();
uint filePos = source.getFour();
uint relocPos = source.getFour();
uint lineNumPos = source.getFour(); //don't use - deprecated
uint relocCount = source.getTwo();
uint lineNumCount = source.getTwo(); //don't use
uint flagval = source.getFour();
SectionSettings settings = SectionSettings.decodeFlags(flagval);
CoffSection section = new CoffSection(secname, settings);
section.owner = objfile;
section.secNum = i + 1;
section.memPos = memPos;
section.fileSize = fileSize;
section.filePos = filePos;
section.relocTblPos = relocPos;
section.relocTblCount = relocCount;
objfile.sections.Add(section);
objfile.secNames[section.name] = section;
}
//load symbols
source.seek(symbolTblAddr);
loadSymbols(source, symbolCount, strtbl, objfile);
foreach (CoffSection section in objfile.sections)
{
//load section data
section.data = new List <Byte>(source.getRange(section.filePos, section.fileSize));
//load sectionrelocs
loadRelocations(source, section, objfile);
}
return(objfile);
}
//leaf node of resource directory tree, this rec points to actual data
private void parseResourceData(BinaryIn source)
{
uint datapos = source.getFour();
uint datasize = source.getFour();
uint codepage = source.getFour();
uint reserved = source.getFour();
datapos -= resourceRVA;
byte[] resdata = source.getRange(datapos, datasize); //get resource data
//get the store type/id/lang vals we stored in our decent to this node
uint restype = resIdNameValues[0];
uint resid = resIdNameValues[1];
String resname = (resid >= 0x80000000) ? getResourceName(source, resid) : null;
uint reslang = resIdNameValues[2];
switch (restype)
{
case 1:
ResData curdata = new ResData(resid, resname, reslang, resdata);
cursorItems.Add(curdata);
break;
case 2:
Bitmap bmp = ResBitmap.parseData(resdata);
addBitmap(resid, resname, reslang, bmp);
getDataItem(bitmaps, resid, resname).getItem(reslang).dataBuf = resdata;
break;
case 3:
ResData icondata = new ResData(resid, resname, reslang, resdata);
iconItems.Add(icondata);
break;
case 4:
addMenu(resid, resname, reslang, resdata);
//List<String> menu = ResMenu.parseData(resdata);
//addMenu(resid, resname, reslang, menu);
getDataItem(menus, resid, resname).getItem(reslang).dataBuf = resdata;
break;
case 5:
addDialog(resid, resname, reslang, resdata);
//List<String> dlg = ResDialog.parseData(resdata);
//addDialog(resid, resname, reslang, dlg);
getDataItem(dialogs, resid, resname).getItem(reslang).dataBuf = resdata;
break;
case 6:
List<String> strings = ResStringTable.parseData(resdata);
addStringTable(resid, resname, reslang, strings);
getDataItem(stringtable, resid, resname).getItem(reslang).dataBuf = resdata;
break;
case 7:
addFontDirectory(resid, resname, reslang, resdata);
getDataItem(fontDirectories, resid, resname).getItem(reslang).dataBuf = resdata;
break;
case 8:
addFont(resid, resname, reslang, resdata);
getDataItem(fonts, resid, resname).getItem(reslang).dataBuf = resdata;
break;
case 9:
List<String> accel = ResAccelerator.parseData(resdata);
addAccelerator(resid, resname, reslang, accel);
getDataItem(accelerators, resid, resname).getItem(reslang).dataBuf = resdata;
break;
case 10:
addUserData(resid, resname, reslang, resdata);
getDataItem(userData, resid, resname).getItem(reslang).dataBuf = resdata;
break;
case 12:
ResImageGroupData cg = ResImageGroupData.parseData(resdata);
addCursorGroup(resid, resname, reslang, cg);
getDataItem(cursorGroups, resid, resname).getItem(reslang).dataBuf = resdata;
break;
case 14:
ResImageGroupData ig = ResImageGroupData.parseData(resdata);
addIconGroup(resid, resname, reslang, ig);
getDataItem(iconGroups, resid, resname).getItem(reslang).dataBuf = resdata;
break;
case 16:
addVersion(resid, resname, reslang, resdata);
//List<String> version = ResVersion.parseData(resdata);
//addVersion(resid, resname, reslang, version);
getDataItem(versions, resid, resname).getItem(reslang).dataBuf = resdata;
break;
default:
addUserData(resid, resname, reslang, resdata);
getDataItem(userData, resid, resname).getItem(reslang).dataBuf = resdata;
break;
}
}