public void Decompress(byte[] compressed_data)
{
MemoryStream stream = new MemoryStream(compressed_data);
BinaryReaderBE reader = new BinaryReaderBE(stream);
reader.BaseStream.Position = 8;
UInt32 chunkCompressedSize = reader.ReadUInt32();
reader.BaseStream.Position += 4;
UInt32 offset = CompressedSize - chunkCompressedSize;
MemoryStream result = new MemoryStream();
BinaryWriter writer = new BinaryWriter(result);
long chunkOffset = offset;
while (reader.BaseStream.Position < offset)
{
UInt32 compressedSize = reader.ReadUInt32();
reader.BaseStream.Position += 4;
long current = reader.BaseStream.Position;
reader.BaseStream.Position = chunkOffset;
chunkOffset += compressedSize;
byte[] chunkCompressedData = reader.ReadBytes((int)compressedSize);
byte[] chunkUncompressData = ZlibDecompress(chunkCompressedData);
writer.Write(chunkUncompressData);
reader.BaseStream.Position = current;
}
reader.Close();
writer.Close();
UncompressedData = result.ToArray();
}
public static byte[] Decompress(byte[] input, uint offset)
{
MemoryStream stream = new MemoryStream(input);
BinaryReaderBE reader = new BinaryReaderBE(stream);
reader.BaseStream.Position = offset;
uint chunkCount = reader.ReadUInt32();
long position = reader.BaseStream.Position;
List <CompressedChunk> totalChunk = new List <CompressedChunk>();
for (int i = 0; i < chunkCount; i++)
{
reader.BaseStream.Position = position;
uint uncompressedOffset = reader.ReadUInt32();
uint uncompressedSize = reader.ReadUInt32();
uint compressedOffset = reader.ReadUInt32();
uint compressedSize = reader.ReadUInt32();
position = reader.BaseStream.Position;
reader.BaseStream.Position = compressedOffset;
byte[] compressedData = reader.ReadBytes((int)compressedSize);
CompressedChunk chunk = new CompressedChunk(uncompressedOffset, uncompressedSize, compressedOffset, compressedSize);
chunk.Decompress(compressedData);
totalChunk.Add(chunk);
}
MemoryStream result = new MemoryStream();
BinaryWriter writer = new BinaryWriter(result);
long unknowPosition = position;
reader.BaseStream.Position = 0;
writer.Write(reader.ReadBytes((int)ArchiveConfig.PackageFlagsOffset));
writer.Write(ArchiveConfig.UncompressedFlagsBytes);
reader.BaseStream.Position += 4;
writer.Write(reader.ReadBytes((int)(ArchiveConfig.CompressionTypeOffset - ArchiveConfig.PackageFlagsOffset - 4)));
writer.Write(new byte[8]);
reader.BaseStream.Position = unknowPosition;
writer.Write(reader.ReadBytes(8));
position = ArchiveConfig.CompressionTypeOffset + 16;
foreach (CompressedChunk chunk in totalChunk)
{
if (chunk.UncompressedOffset > position)
{
long zeroes = chunk.UncompressedOffset - position;
writer.Write(new byte[zeroes]);
position = chunk.UncompressedOffset;
}
writer.Write(chunk.UncompressedData);
position += chunk.UncompressedSize;
}
writer.Close();
reader.Close();
return(result.ToArray());
}
public static List <DataMessage> Decrypt(byte[] input)
{
List <DataMessage> result = new List <DataMessage>();
MemoryStream stream = new MemoryStream(input);
BinaryReaderBE reader = new BinaryReaderBE(stream);
if (reader.ReadUInt32() == ArchiveConfig.Signature)
{
reader.BaseStream.Position = ArchiveConfig.CompressionTypeOffset;
uint compressType = reader.ReadUInt32();
switch (compressType)
{
case 0:
reader.BaseStream.Position = ArchiveConfig.TableOffset;
uint nameCount = reader.ReadUInt32();
uint nameOffset = reader.ReadUInt32();
uint exportCount = reader.ReadUInt32();
uint exportOffset = reader.ReadUInt32();
uint importCount = reader.ReadUInt32();
uint importOffset = reader.ReadUInt32();
string[] nameTable = new string[nameCount];
reader.BaseStream.Position = nameOffset;
for (int i = 0; i < nameCount; i++)
{
uint strLength = reader.ReadUInt32();
nameTable[i] = Encoding.UTF8.GetString(reader.ReadBytes((int)strLength - 1));
reader.BaseStream.Position += 9;
}
string[] nameImport = new string[importCount];
reader.BaseStream.Position = importOffset;
for (int i = 0; i < importCount; i++)
{
reader.BaseStream.Position += 20;
uint index = reader.ReadUInt32();
nameImport[i] = nameTable[(int)index];
reader.BaseStream.Position += 4;
}
reader.BaseStream.Position = exportOffset;
long current = reader.BaseStream.Position;
for (int i = 0; i < exportCount; i++)
{
reader.BaseStream.Position = current;
uint indexType = (uint)reader.ReadInt32() ^ 0xFFFFFFFF;
reader.BaseStream.Position += 8;
uint nameIndex = reader.ReadUInt32();
uint suffixName = reader.ReadUInt32();
string name = nameTable[(int)nameIndex];
if (suffixName != 0)
{
name += $"_{suffixName}";
}
reader.BaseStream.Position += 12;
uint size = reader.ReadUInt32();
uint offset = reader.ReadUInt32();
reader.BaseStream.Position += 4;
if (reader.ReadUInt32() > 0)
{
reader.BaseStream.Position += 4;
}
reader.BaseStream.Position += 20;
current = reader.BaseStream.Position;
if (nameImport[indexType] == "Sqex03DataMessage")
{
reader.BaseStream.Position = offset;
uint order = reader.ReadUInt32();
List <Speaker> speakers = new List <Speaker>();
while (true)
{
string nameID = nameTable[reader.ReadInt32()];
if (nameID == "None")
{
break;
}
string classID = nameTable[reader.ReadInt64()];
if (classID == "IntProperty")
{
long lengthProperty = reader.ReadInt64();
long intProperty = reader.ReadInt64();
}
else if (classID == "ArrayProperty")
{
long lengthProperty = reader.ReadInt64();
if (nameID == "m_String")
{
DataMessage dataMessage = GetStrings(ref reader, name, false);
result.Add(dataMessage);
}
else if (nameID == "m_Name")
{
DataMessage dataMessage = GetStrings(ref reader, $"{name}_Name", true);
if (!string.IsNullOrWhiteSpace(string.Join("", dataMessage.Strings)))
{
result.Add(dataMessage);
}
}
else if (nameID == "m_MesData")
{
GetSpeakers(ref reader, ref speakers, nameTable);
}
else
{
reader.BaseStream.Position += lengthProperty + 4;
}
}
}
if (result.Any(entry => entry.Name == $"{name}_Name"))
{
DataMessage data = result.Find(entry => entry.Name == name);
DataMessage dataName = result.Find(entry => entry.Name == $"{name}_Name");
for (int y = 0; y < speakers.Count; y++)
{
try
{
speakers[y].Name = dataName.Strings[speakers[y].ID];
}
catch
{
speakers[y].Name = "";
}
}
data.Speakers = speakers;
}
}
}
break;
case 1:
byte[] decompressedData = Decompress(input, (uint)reader.BaseStream.Position);
return(Decrypt(decompressedData));
default:
throw new Exception("The file has an unsupported compression type.");
}
}
else
{
throw new Exception("The file is not a Drakengard 3 (Unreal 3) file.");
}
reader.Close();
return(result);
}
private static byte[] Reimport(byte[] input, Dictionary <string, List <string> > data)
{
MemoryStream result = new MemoryStream();
MemoryStream inputStream = new MemoryStream(input);
BinaryReaderBE reader = new BinaryReaderBE(inputStream);
BeBinaryWriter writer = new BeBinaryWriter(result);
if (reader.ReadUInt32() == ArchiveConfig.Signature)
{
reader.BaseStream.Position = ArchiveConfig.CompressionTypeOffset;
uint compressType = reader.ReadUInt32();
switch (compressType)
{
case 0:
reader.BaseStream.Position = ArchiveConfig.TableOffset;
uint nameCount = reader.ReadUInt32();
uint nameOffset = reader.ReadUInt32();
uint exportCount = reader.ReadUInt32();
uint exportOffset = reader.ReadUInt32();
uint importCount = reader.ReadUInt32();
uint importOffset = reader.ReadUInt32();
uint emptyOffset = reader.ReadUInt32();
uint unknownOffset = reader.ReadUInt32();
long emptyBytes = unknownOffset - emptyOffset;
string[] nameTable = new string[nameCount];
reader.BaseStream.Position = nameOffset;
for (int i = 0; i < nameCount; i++)
{
uint strLength = reader.ReadUInt32();
nameTable[i] = Encoding.UTF8.GetString(reader.ReadBytes((int)strLength - 1));
reader.BaseStream.Position += 9;
}
string[] nameImport = new string[importCount];
reader.BaseStream.Position = importOffset;
for (int i = 0; i < importCount; i++)
{
reader.BaseStream.Position += 20;
uint index = reader.ReadUInt32();
nameImport[i] = nameTable[(int)index];
reader.BaseStream.Position += 4;
}
reader.BaseStream.Position = 0;
writer.Write(reader.ReadBytes((int)exportOffset)); //header
long bytesChanged = 0;
List <byte[]> newData = new List <byte[]>();
long current = exportOffset;
for (int i = 0; i < exportCount; i++)
{
MemoryStream newRealData = new MemoryStream();
BeBinaryWriter writerData = new BeBinaryWriter(newRealData);
reader.BaseStream.Position = current;
long start = reader.BaseStream.Position;
uint indexType = (uint)reader.ReadInt32() ^ 0xFFFFFFFF;
reader.BaseStream.Position += 8;
uint nameIndex = reader.ReadUInt32();
uint suffixName = reader.ReadUInt32();
string name = nameTable[(int)nameIndex];
if (suffixName != 0)
{
name += $"_{suffixName}";
}
reader.BaseStream.Position += 12;
uint size = reader.ReadUInt32();
uint offset = reader.ReadUInt32();
long newOffset = offset + bytesChanged;
reader.BaseStream.Position += 4;
if (reader.ReadUInt32() > 0)
{
reader.BaseStream.Position += 4;
}
reader.BaseStream.Position += 20;
long headerLength = reader.BaseStream.Position - start;
current = reader.BaseStream.Position;
reader.BaseStream.Position = offset;
long stringBytesChanged = 0;
if (nameImport[indexType] == "Sqex03DataMessage")
{
uint order = reader.ReadUInt32();
writerData.Write(order);
while (true)
{
int nameIDIndex = reader.ReadInt32();
string nameID = nameTable[nameIDIndex];
writerData.Write(nameIDIndex);
if (nameID == "None")
{
writerData.Write(new byte[4]);
break;
}
long classIDIndex = reader.ReadInt64();
string classID = nameTable[classIDIndex];
writerData.Write(classIDIndex);
if (classID == "IntProperty")
{
writerData.Write(reader.ReadBytes(16));
}
else if (classID == "ArrayProperty")
{
long lengthProperty = reader.ReadInt64();
if (nameID == "m_String")
{
List <string> strings;
if (data.TryGetValue(name, out strings))
{
byte[] temp = WriteStrings(ref reader, strings);
long newStrLength = temp.Length - 4;
writerData.Write(newStrLength);
writerData.Write(temp);
stringBytesChanged += newStrLength - lengthProperty;
}
else
{
writerData.Write(lengthProperty);
writerData.Write(reader.ReadBytes((int)lengthProperty + 4));
}
}
else if (nameID == "m_Name")
{
List <string> strings;
if (data.TryGetValue($"{name}_Name", out strings))
{
byte[] temp = WriteStrings(ref reader, strings);
long newStrLength = temp.Length - 4;
writerData.Write(newStrLength);
writerData.Write(temp);
stringBytesChanged += newStrLength - lengthProperty;
}
else
{
writerData.Write(lengthProperty);
writerData.Write(reader.ReadBytes((int)lengthProperty + 4));
}
}
else
{
writerData.Write(lengthProperty);
writerData.Write(reader.ReadBytes((int)(lengthProperty + 4)));
}
}
}
}
else
{
writerData.Write(reader.ReadBytes((int)size));
}
writerData.Close();
newData.Add(newRealData.ToArray());
reader.BaseStream.Position = start;
writer.Write(reader.ReadBytes(32));
if (stringBytesChanged != 0)
{
writer.Write((uint)(size + stringBytesChanged));
bytesChanged += stringBytesChanged;
reader.BaseStream.Position += 4;
}
else
{
writer.Write(reader.ReadBytes(4));
}
writer.Write((uint)newOffset);
reader.BaseStream.Position += 4;
writer.Write(reader.ReadBytes((int)headerLength - 40));
}
writer.Write(new byte[emptyBytes]);
foreach (byte[] dataMessage in newData)
{
writer.Write(dataMessage);
}
writer.Write(new byte[4]);
break;
case 1:
byte[] decompressedData = Decompress(input, (uint)reader.BaseStream.Position);
return(Reimport(decompressedData, data));
default:
throw new Exception("The file has an unsupported compression type.");
}
}
else
{
throw new Exception("The file is not a Drakengard 3 (Unreal 3) file.");
}
reader.Close();
writer.Close();
return(result.ToArray());
}