private Pack1Unarchiver(string packagePath, Pack1Meta metaData, string destinationDirPath, byte[] key, string suffix, BytesRange range)
{
Checks.ArgumentFileExists(packagePath, "packagePath");
Checks.ArgumentDirectoryExists(destinationDirPath, "destinationDirPath");
Checks.ArgumentNotNull(suffix, "suffix");
if (range.Start == 0)
{
Assert.AreEqual(MagicBytes.Pack1, MagicBytes.ReadFileType(packagePath), "Is not Pack1 format");
}
DebugLogger.LogConstructor();
DebugLogger.LogVariable(packagePath, "packagePath");
DebugLogger.LogVariable(destinationDirPath, "destinationDirPath");
DebugLogger.LogVariable(suffix, "suffix");
_packagePath = packagePath;
_metaData = metaData;
_destinationDirPath = destinationDirPath;
_suffix = suffix;
_range = range;
using (var sha256 = SHA256.Create())
{
_key = sha256.ComputeHash(key);
}
_iv = Convert.FromBase64String(_metaData.Iv);
}
private DecompressorCreator ResolveDecompressor(Pack1Meta meta)
{
switch (meta.Compression)
{
case Pack1Meta.XZCompression:
return(CreateXzDecompressor);
case Pack1Meta.GZipCompression:
return(CreateGzipDecompressor);
default:
return(CreateGzipDecompressor);
}
}
public Pack1Unarchiver(string packagePath, Pack1Meta metaData, string destinationDirPath, byte[] key)
{
Checks.ArgumentFileExists(packagePath, "packagePath");
Checks.ArgumentDirectoryExists(destinationDirPath, "destinationDirPath");
Assert.AreEqual(MagicBytes.Pack1, MagicBytes.ReadFileType(packagePath), "Is not Pack1 format");
DebugLogger.LogConstructor();
DebugLogger.LogVariable(packagePath, "packagePath");
DebugLogger.LogVariable(destinationDirPath, "destinationDirPath");
_packagePath = packagePath;
_metaData = metaData;
_destinationDirPath = destinationDirPath;
using (var sha256 = SHA256.Create())
{
_key = sha256.ComputeHash(key);
}
_iv = Convert.FromBase64String(_metaData.Iv);
}
public Pack1Unarchiver(string packagePath, Pack1Meta metaData, string destinationDirPath, string key)
: this(packagePath, metaData, destinationDirPath, Encoding.ASCII.GetBytes(key))
{
// do nothing
}
public Pack1Unarchiver(string packagePath, Pack1Meta metaData, string destinationDirPath, string key, string suffix = "")
: this(packagePath, metaData, destinationDirPath, Encoding.ASCII.GetBytes(key), suffix, new BytesRange(0, -1))
{
// do nothing
}