public bool UnpackNode(FileInfoKey nodeKey, string filePath)
{
ulong offset = DataOffset + (ulong)nodeKey.SegmentIndex * GTVolumeTOC.SEGMENT_SIZE;
uint uncompressedSize = nodeKey.UncompressedSize;
if (!IsPatchVolume)
{
if (NoUnpack)
{
return(false);
}
Stream.Position = (long)offset;
if (nodeKey.Flags.HasFlag(FileInfoFlags.Compressed))
{
if (!MiscUtils.DecryptCheckCompression(Stream, Keyset, nodeKey.FileIndex, uncompressedSize))
{
Program.Log($"[X] Failed to decompress file ({filePath}) while unpacking file info key {nodeKey.FileIndex}", forceConsolePrint: true);
return(false);
}
Directory.CreateDirectory(Path.GetDirectoryName(filePath));
Stream.Position -= 8;
MiscUtils.DecryptAndInflateToFile(Keyset, Stream, nodeKey.FileIndex, uncompressedSize, filePath, false);
}
else
{
Directory.CreateDirectory(Path.GetDirectoryName(filePath));
MiscUtils.DecryptToFile(Keyset, Stream, nodeKey.FileIndex, uncompressedSize, filePath, false);
}
}
else
{
string patchFilePath = PDIPFSPathResolver.GetPathFromSeed(nodeKey.FileIndex);
string localPath = this.PatchVolumeFolder + "/" + patchFilePath;
if (NoUnpack)
{
return(false);
}
/* I'm really not sure if there's a better way to do this.
* Volume files, at least nodes don't seem to even store any special flag whether
* it is located within an actual volume file or a patch volume. The only thing that is different is the sector index.. Sometimes node index when it's updated
* It's slow, but somewhat works I guess..
* */
if (!File.Exists(localPath))
{
return(false);
}
Program.Log($"[:] Unpacking: {patchFilePath} -> {filePath}");
using var fs = new FileStream(localPath, FileMode.Open);
if (fs.Length >= 7)
{
Span <byte> magic = stackalloc byte[6];
fs.Read(magic);
if (Encoding.ASCII.GetString(magic).StartsWith("BSDIFF"))
{
Program.Log($"[X] Detected BSDIFF file for {filePath} ({patchFilePath}), can not unpack yet. (fileID {nodeKey.FileIndex})", forceConsolePrint: true);
return(false);
}
fs.Position = 0;
}
if (nodeKey.Flags.HasFlag(FileInfoFlags.Compressed))
{
if (!MiscUtils.DecryptCheckCompression(fs, Keyset, nodeKey.FileIndex, uncompressedSize))
{
Program.Log($"[X] Failed to decompress file {filePath} ({patchFilePath}) while unpacking file info key {nodeKey.FileIndex}", forceConsolePrint: true);
return(false);
}
Directory.CreateDirectory(Path.GetDirectoryName(filePath));
fs.Position = 0;
MiscUtils.DecryptAndInflateToFile(Keyset, fs, nodeKey.FileIndex, filePath);
}
else
{
Directory.CreateDirectory(Path.GetDirectoryName(filePath));
MiscUtils.DecryptToFile(Keyset, fs, nodeKey.FileIndex, filePath);
}
}
return(true);
}