public CASCHandler(string basePath)
{
BasePath = basePath;
lookup3 = new Lookup3();
InitConfigKeys();
// Get idx files.
for (var i = 0; i <= 0xF; i++)
{
// Always get the last element in sequence for latest file data.
var idxFile = Directory.GetFiles(BasePath + "/Data/data", $"{i :x2}*.idx").Last();
idxFiles.Add(new IndexFile(idxFile));
}
// Get CDN indices.
var indices = cdnConfig["archives"];
for (var i = 0; i < indices.Length; i++)
{
indexFiles.Add(indices[i]);
idxFiles.Add(new IndexFile($"{basePath}/Data/indices/{indices[i]}.index", true, (ushort)i));
}
// Get available data.### files.
foreach (var f in Directory.GetFiles(BasePath + "/Data/data", "data.*"))
{
var dataFile = new DataFile(File.OpenRead(f));
var index = Convert.ToInt32(Path.GetExtension(f).Remove(0, 1));
dataFiles.Add(index, dataFile);
}
// Get encoding key.
var encodingKey = buildConfig["encoding"][1];
if (encodingKey.Length / 2 > 16)
{
throw new InvalidOperationException("Encoding key too long");
}
else if (encodingKey.Length / 2 < 16)
{
throw new InvalidOperationException("Encoding key too short");
}
encodingFile = new EncodingFile(encodingKey.ToByteArray());
// Get idx file & entry which contains the encoding key (first 9 bytes)
idxFiles.ForEach(idx =>
{
var idxEntry = idx[encodingFile.Key];
if (idxEntry.Size != 0)
{
encodingFile.LoadEntries(dataFiles[idxEntry.Index], idxEntry);
}
});
// Get root key
var rootKey = buildConfig["root"][0];
if (rootKey.Length / 2 > 16)
{
throw new InvalidOperationException("Root key too long");
}
else if (rootKey.Length / 2 < 16)
{
throw new InvalidOperationException("Root key too short");
}
rootFile = new RootFile();
idxFiles.ForEach(idx =>
{
var encodingEntry = encodingFile[rootKey.ToByteArray()];
if (encodingEntry.Size != 0 && encodingEntry.Keys.Length > 0)
{
var idxEntry = idx[encodingEntry.Keys[0].Slice(0, 9)];
if (idxEntry.Size != 0)
{
rootFile.LoadEntries(dataFiles[idxEntry.Index], idxEntry);
}
}
});
}
