public static InstallEntry Read(ref SpanReader sr)
{
InstallEntry entry = new InstallEntry();
entry.FileSize = sr.ReadInt64();
entry.BlockIndex = sr.ReadInt32();
entry.PathNameOffset = sr.ReadInt32();
sr.Position = entry.PathNameOffset;
entry.Path = sr.ReadString0();
return(entry);
}
public void Unpack(string outPath)
{
using var fs = new FileStream(_file, FileMode.Open);
var crypto = new VolumeCryptoOld(_keys);
for (int i = 0; i < Entries.Count; i++)
{
InstallEntry entry = Entries[i];
string outFileName = Path.Combine(outPath, entry.Path);
Directory.CreateDirectory(Path.GetDirectoryName(outFileName));
Program.Log($"[:] Unpacking: {entry.Path}.. ({i + 1}/{Entries.Count})");
// Decrypt it from offset
using (FileStream tempOutDecrypt = new FileStream(outFileName + ".in", FileMode.Create))
crypto.Decrypt(fs, tempOutDecrypt, DefaultSeed, (ulong)entry.FileSize, (ulong)entry.BlockIndex * BlockSize);
// Decompress if needed
bool isCompressed = true;
using (FileStream inStream = new FileStream(outFileName + ".in", FileMode.Open))
{
if (inStream.ReadUInt32() == 0xFFF7EEC5)
{
int size = -inStream.ReadInt32();
inStream.Position = 8;
using var outDecompressStream = new FileStream(outFileName, FileMode.Create);
using var ds = new DeflateStream(inStream, CompressionMode.Decompress);
ds.CopyTo(outDecompressStream);
}
else
{
isCompressed = false;
}
}
if (isCompressed)
{
File.Delete(outFileName + ".in");
}
else
{
File.Move(outFileName + ".in", outFileName);
}
}
Program.Log($"[:] Install unpack finished.");
}
private void LoadToC(uint tocSize, uint fileCount, bool saveHeaderToc = false)
{
using var fs = new FileStream(_file, FileMode.Open);
byte[] tocBuffer = new byte[tocSize];
fs.Read(tocBuffer);
_keys.CryptData(tocBuffer, DefaultSeed);
if (saveHeaderToc)
{
File.WriteAllBytes("InstallerHeaderTOC.bin", tocBuffer);
}
SpanReader sr = new SpanReader(tocBuffer, Endian.Big);
sr.Position = 0x10;
for (int i = 0; i < fileCount; i++)
{
sr.Position = 0x10 + (i * 0x10);
var entry = InstallEntry.Read(ref sr);
Entries.Add(entry);
}
}
