/// <summary>
/// Reads the contents of RGSSAD archive and populates ArchivedFiles property.
/// </summary>
private void ReadRGSSAD()
{
uint key = Constants.RGASSADv1Key;
ArchivedFiles = new List <ArchivedFile>();
BinaryReader.BaseStream.Seek(8, SeekOrigin.Begin);
while (true)
{
int length = DecryptInteger(BinaryReader.ReadInt32(), ref key);
var archivedFile = new ArchivedFile
{
Name = DecryptFilename(BinaryReader.ReadBytes(length), ref key),
Size = DecryptInteger(BinaryReader.ReadInt32(), ref key),
Offset = BinaryReader.BaseStream.Position,
Key = key
};
ArchivedFiles.Add(archivedFile);
BinaryReader.BaseStream.Seek(archivedFile.Size, SeekOrigin.Current);
if (BinaryReader.BaseStream.Position == BinaryReader.BaseStream.Length)
{
break;
}
}
}
/// <summary>
/// Reads the contents of RGSSAD archive and populates ArchivedFiles property.
/// </summary>
private void ReadRGSSAD()
{
BinaryReader.BaseStream.Seek(8, SeekOrigin.Begin);
uint key = (uint)BinaryReader.ReadInt32();
key *= 9;
key += 3;
ArchivedFiles = new List <ArchivedFile>();
while (true)
{
ArchivedFile archivedFile = new ArchivedFile();
archivedFile.Offset = DecryptInteger(BinaryReader.ReadInt32(), key);
archivedFile.Size = DecryptInteger(BinaryReader.ReadInt32(), key);
archivedFile.Key = (uint)DecryptInteger(BinaryReader.ReadInt32(), key);
int length = DecryptInteger(BinaryReader.ReadInt32(), key);
if (archivedFile.Offset == 0)
{
break;
}
archivedFile.Name = DecryptFilename(BinaryReader.ReadBytes(length), key);
ArchivedFiles.Add(archivedFile);
}
}
/// <summary>
/// Extracts single file from the file.
/// </summary>
/// <param name="archivedFile">Archived file</param>
/// <param name="outputDirectoryPath">Output directory path</param>
/// <param name="overrideExisting">If set to true, overrides existing files</param>
/// <param name="createDirectory">If set to true, creates directory specified in encrypted file name</param>
/// <exception cref="System.Exception">Invalid file path. Archive could be corrupted.</exception>
public void ExtractFile(ArchivedFile archivedFile, string outputDirectoryPath, bool overrideExisting = false, bool createDirectory = true)
{
string outputPath;
if (createDirectory)
{
// Create output directory if it does not exist
string directoryPath = Path.GetDirectoryName(archivedFile.Name);
if (directoryPath == null)
{
throw new Exception("Invalid file path. Archive could be corrupted.");
}
if (!Directory.Exists(Path.Combine(outputDirectoryPath, directoryPath)))
{
Directory.CreateDirectory(Path.Combine(outputDirectoryPath, directoryPath));
}
outputPath = Path.Combine(outputDirectoryPath, archivedFile.Name);
}
else
{
string fileName = archivedFile.Name.Split('\\').Last();
outputPath = Path.Combine(outputDirectoryPath, fileName);
}
// Override existing file flag is set to true
if (File.Exists(outputPath) && !overrideExisting)
{
return;
}
BinaryReader.BaseStream.Seek(archivedFile.Offset, SeekOrigin.Begin);
byte[] data = BinaryReader.ReadBytes(archivedFile.Size);
BinaryWriter binaryWriter = new BinaryWriter(File.OpenWrite(outputPath));
binaryWriter.Write(DecryptFileData(data, archivedFile.Key));
binaryWriter.Close();
}
