private void ReadFileSystem()
{
XFSInputFile ifile = new XFSInputFile(this, this.RootSectorBlockSize * 0x800, this.RootSectorBlock);
this.RootDir = new XDvdFsFileSystemEntry(ifile);
this.CurrentDir = this.RootDir;
ISOFileStreamer ifs = new ISOFileStreamer(this.fileSystemOffset, new BinaryReader(this.GetStream()));
ifs.GetNewFile(ifile);
byte[] buffer = new byte[this.RootSectorBlockSize * 0x800];
ifs.Read(buffer, 0, this.RootSectorBlockSize * 0x800);
this.ReadFileSystemData(buffer, 0, this.RootDir, ifs);
List <XDvdFsFileSystemEntry> fileList = this.RootDir.GetFileList();
fileList.Sort(new FSOutSectorComparer());
XDvdFsFileSystemEntry fse = new XDvdFsFileSystemEntry(new FSFolder("Temp"));
foreach (XDvdFsFileSystemEntry entry2 in fileList)
{
if (((fse.StartSector == entry2.StartSector) && (fse.LogicalFileSize == entry2.LogicalFileSize)) && !entry2.IsFolder)
{
entry2.SetLinkedTo(fse);
}
fse = entry2;
}
}
public long FindFSOffset()
{
Trace.WriteLine("Searching for filesystem offset");
bool flag = false;
ISOPartitionDetails details = new ISOPartitionDetails();
if (this.InputFileSize > 0xfd90000L)
{
Trace.WriteLine("Attempting to load XBOX 360 PFI file details");
this.InStream.Seek(0xfd8e800L, SeekOrigin.Begin);
byte[] buffer = new byte[0x800];
byte[] buffer2 = new byte[0x800];
this.InStream.Read(buffer2, 0, 0x800);
this.InStream.Seek(0x800L, SeekOrigin.Current);
this.InStream.Read(buffer, 0, 0x800);
Trace.WriteLine("Checking PFI details...");
if (FileSystemSource.SimpleCheckSS(buffer) && FileSystemSource.CheckPFI(buffer2))
{
Trace.WriteLine("SS and PFI are both trivially correct");
Stream vs = new ISOFileStreamer(0L, 0xfd8e800L, new BinaryReader(this.InStream));
details = FileSystemSource.GetPartitionDetails(buffer, buffer2, Format.Xbox360, FileSystemSource.GetVideoSize(vs));
vs.Close();
Trace.WriteLine("FileSystemOffset calculated as being at " + details.VideoFileSize.ToString() + " blocks");
flag = true;
}
else
{
Trace.WriteLine("PFI or SS is invalid or not present, will use default value");
}
long num = 0xfd90000L;
if (flag)
{
num = details.VideoPartitionSize * 0x800L;
}
Trace.WriteLine("Now checking FS Magic");
if (this.InputFileSize > ((num + 0x10000L) + 20L))
{
this.InStream.Seek(num + 0x10000L, SeekOrigin.Begin);
byte[] buffer3 = new byte[20];
this.InStream.Read(buffer3, 0, 20);
if (Encoding.ASCII.GetString(buffer3, 0, 20) == "MICROSOFT*XBOX*MEDIA")
{
Trace.WriteLine("FS Magic found at " + num.ToString() + "blocks + 0x14");
return(num);
}
Trace.WriteLine("XBOX360 Partition loading failed, trying XBOX 1 partition");
if (this.InputFileSize > 0x18300000L)
{
this.InStream.Seek(0x182fe800L, SeekOrigin.Begin);
buffer = new byte[0x800];
buffer2 = new byte[0x800];
this.InStream.Read(buffer2, 0, 0x800);
this.InStream.Seek(0x800L, SeekOrigin.Current);
this.InStream.Read(buffer, 0, 0x800);
Trace.WriteLine("Attempting to read details from Xbox 1 pfi + ss");
if (FileSystemSource.CheckXbox1SS(buffer) && FileSystemSource.CheckPFI(buffer2))
{
Trace.WriteLine("SS and PFI loaded successfully");
Stream stream2 = new ISOFileStreamer(0L, 0x182fe800L, new BinaryReader(this.InStream));
details = FileSystemSource.GetPartitionDetails(buffer, buffer2, Format.Xbox1, FileSystemSource.GetVideoSize(stream2));
stream2.Close();
Trace.WriteLine("FileSystemOffset calculated as being at " + details.VideoFileSize.ToString() + " blocks");
flag = true;
}
else
{
Trace.WriteLine("PFI or SS are invalid or not present, trying default xbox 1 offset");
flag = false;
}
num = 0x18300000L;
if (flag)
{
num = details.VideoPartitionSize * 0x800L;
}
if (this.InputFileSize > ((num + 0x10000L) + 20L))
{
this.InStream.Seek(num + 0x10000L, SeekOrigin.Begin);
this.InStream.Read(buffer3, 0, 20);
if (Encoding.ASCII.GetString(buffer3, 0, 20) == "MICROSOFT*XBOX*MEDIA")
{
Trace.WriteLine("FS Magic found at " + num.ToString() + "blocks + 0x14");
return(num);
}
}
}
}
}
else
{
Trace.WriteLine("File is too short to contain a video partition (" + this.InputFileSize.ToString() + ")");
}
Trace.WriteLine("FS offset not found, using byte 0");
return(0L);
}
private void ReadFileSystemData(byte[] buffer, int fsOffset, XDvdFsFileSystemEntry parentEntry, ISOFileStreamer ifs)
{
if (fsOffset > buffer.Length)
{
throw new SystemException("Disaster");
}
XFSInputFile ifile = new XFSInputFile(this, buffer, fsOffset);
XDvdFsFileSystemEntry entry = new XDvdFsFileSystemEntry(ifile);
entry.ParentNode = parentEntry;
ushort num = BitConverter.ToUInt16(buffer, fsOffset);
ushort num2 = BitConverter.ToUInt16(buffer, fsOffset + 2);
if (ifile.StartSector == -1)
{
throw new SystemException("Invalid TOC entry");
}
if (num != 0)
{
if ((num * 4) > buffer.Length)
{
throw new SystemException("Disaster 2!");
}
this.ReadFileSystemData(buffer, num * 4, parentEntry, ifs);
}
if (ifile.IsFolder())
{
if ((ifile.StartSector == 0) || (ifile.GetFileLength() == 0L))
{
parentEntry.Files.Add(entry);
}
else
{
byte[] buffer2 = new byte[ifile.GetFileLength()];
ifs.GetNewFile(ifile);
ifs.Read(buffer2, 0, (int)ifile.GetFileLength());
parentEntry.Files.Add(entry);
this.ReadFileSystemData(buffer2, 0, entry, ifs);
}
}
else
{
parentEntry.Files.Add(entry);
}
if (num2 != 0)
{
if ((num2 * 4) > buffer.Length)
{
throw new SystemException("Disaster 3!");
}
this.ReadFileSystemData(buffer, num2 * 4, parentEntry, ifs);
}
}