public PeImageLoader(IServiceProvider services, string filename, byte [] img, uint peOffset) : base(services, filename, img)
{
ImageReader rdr = new LeImageReader(RawImage, peOffset);
if (rdr.ReadByte() != 'P' ||
rdr.ReadByte() != 'E' ||
rdr.ReadByte() != 0x0 ||
rdr.ReadByte() != 0x0)
{
throw new BadImageFormatException("Not a valid PE header.");
}
importThunks = new Dictionary<uint, PseudoProcedure>();
importReferences = new Dictionary<Address, ImportReference>();
short expectedMagic = ReadCoffHeader(rdr);
ReadOptionalHeader(rdr, expectedMagic);
}
public byte[] GetBytes()
{
byte[] data;
var stm = new MemoryStream();
var rdr = new LeImageReader(image, (uint) offset);
byte trackNext = rdr.ReadByte();
while (trackNext != 0)
{
byte sectorNext = rdr.ReadByte();
data = rdr.ReadBytes(0xFE);
stm.Write(data, 0, data.Length);
rdr.Offset = (uint) SectorOffset(trackNext, sectorNext);
trackNext = rdr.ReadByte();
}
byte lastUsed = rdr.ReadByte();
data = rdr.ReadBytes(lastUsed - 2);
stm.Write(data, 0, data.Length);
return stm.ToArray();
}
public bool ReadDirectorySector(LeImageReader rdr, List<ArchiveDirectoryEntry> entries)
{
byte nextDirTrack = 0;
byte nextDirSector = 0;
for (int i = 0; i < 8; ++i)
{
if (i == 0)
{
nextDirTrack = rdr.ReadByte();
nextDirSector = rdr.ReadByte();
}
else
{
rdr.Seek(2);
}
var fileType = (FileType) rdr.ReadByte();
var fileTrack = rdr.ReadByte();
var fileSector = rdr.ReadByte();
var sName = Encoding.ASCII.GetString(rdr.ReadBytes(16))
.TrimEnd((char) 0xA0);
var relTrack = rdr.ReadByte();
var relSector = rdr.ReadByte();
var rel = rdr.ReadByte();
rdr.Seek(6);
var sectorSize = rdr.ReadLeInt16();
if ((fileType & FileType.FileTypeMask) != FileType.DEL)
{
entries.Add(new D64FileEntry(
sName,
RawImage,
SectorOffset(fileTrack, fileSector),
fileType));
}
}
if (nextDirTrack != 0)
{
rdr.Offset = (uint) SectorOffset(nextDirTrack, nextDirSector);
return true;
}
else
{
return false;
}
}
public List<ArchiveDirectoryEntry> LoadDiskDirectory()
{
var entries = new List<ArchiveDirectoryEntry>();
var rdr = new LeImageReader(RawImage, (uint)SectorOffset(18, 0));
byte track = rdr.ReadByte();
if (track == 0)
return entries;
byte sector = rdr.ReadByte();
rdr.Offset = (uint) D64Loader.SectorOffset(track, sector);
while (ReadDirectorySector(rdr, entries))
;
return entries;
}