/// <summary>
/// Reads the archive header.
/// </summary>
public void ReadHeader(byte[] aesKey = null, byte[] ngKey = null)
{
var reader = new DataReader(BaseStream);
var posbak = reader.Position;
reader.Position = 0;
uint header_identifier = reader.ReadUInt32(); // 0x52504637
if (header_identifier != IDENT)
throw new Exception("The identifier " + header_identifier.ToString("X8") + " did not match the expected value of 0x52504637");
uint header_entriesCount = reader.ReadUInt32();
uint header_namesLength = reader.ReadUInt32();
uint header_encryption = reader.ReadUInt32();
byte[] entries_data_dec = null;
byte[] names_data_dec = null;
if (header_encryption == 0x04E45504F) // for OpenIV compatibility
{
// no encryption...
Encryption = RageArchiveEncryption7.None;
entries_data_dec = reader.ReadBytes(16 * (int)header_entriesCount);
names_data_dec = reader.ReadBytes((int)header_namesLength);
}
else if (header_encryption == 0x0ffffff9)
{
// AES enceyption...
Encryption = RageArchiveEncryption7.AES;
var entries_data = reader.ReadBytes(16 * (int)header_entriesCount);
entries_data_dec = AesEncryption.DecryptData(entries_data, aesKey);
var names_data = reader.ReadBytes((int)header_namesLength);
names_data_dec = AesEncryption.DecryptData(names_data, aesKey);
}
else
{
// NG encryption...
Encryption = RageArchiveEncryption7.NG;
var entries_data = reader.ReadBytes(16 * (int)header_entriesCount);
entries_data_dec = GTA5Crypto.Decrypt(entries_data, ngKey);
var names_data = reader.ReadBytes((int)header_namesLength);
names_data_dec = GTA5Crypto.Decrypt(names_data, ngKey);
}
var entries_reader = new DataReader(new MemoryStream(entries_data_dec));
var names_reader = new DataReader(new MemoryStream(names_data_dec));
var entries = new List<IRageArchiveEntry7>();
for (var index = 0; index < header_entriesCount; index++)
{
entries_reader.Position += 4;
int x = entries_reader.ReadInt32();
entries_reader.Position -= 8;
if (x == 0x7fffff00)
{
// directory
var e = new RageArchiveDirectory7();
e.Read(entries_reader);
names_reader.Position = e.NameOffset;
e.Name = names_reader.ReadString();
entries.Add(e);
}
else
{
if ((x & 0x80000000) == 0)
{
// binary file
var e = new RageArchiveBinaryFile7();
e.Read(entries_reader);
names_reader.Position = e.NameOffset;
e.Name = names_reader.ReadString();
entries.Add(e);
}
else
{
// resource file
var e = new RageArchiveResourceFile7();
e.Read(entries_reader);
// there are sometimes resources with length=0xffffff which actually
// means length>=0xffffff
if (e.FileSize == 0xFFFFFF)
{
reader.Position = 512 * e.FileOffset;
var buf = reader.ReadBytes(16);
e.FileSize = ((uint)buf[7] << 0) | ((uint)buf[14] << 8) | ((uint)buf[5] << 16) | ((uint)buf[2] << 24);
}
names_reader.Position = e.NameOffset;
e.Name = names_reader.ReadString();
entries.Add(e);
}
}
}
var stack = new Stack<RageArchiveDirectory7>();
stack.Push((RageArchiveDirectory7)entries[0]);
Root = (RageArchiveDirectory7)entries[0];
while (stack.Count > 0)
{
var item = stack.Pop();
for (int index = (int)item.EntriesIndex; index < (item.EntriesIndex + item.EntriesCount); index++)
{
if (entries[index] is RageArchiveDirectory7)
{
item.Directories.Add(entries[index] as RageArchiveDirectory7);
stack.Push(entries[index] as RageArchiveDirectory7);
}
else
{
item.Files.Add(entries[index]);
}
}
}
reader.Position = posbak;
}
public virtual void Load(Stream stream)
{
var reader = new DataReader(stream);
reader.Position = 0;
var ident = reader.ReadUInt32();
Version = reader.ReadInt32();
var systemFlags = reader.ReadUInt32();
var graphicsFlags = reader.ReadUInt32();
SystemPagesDiv16 = (int)(systemFlags >> 27) & 0x1;
SystemPagesDiv8 = (int)(systemFlags >> 26) & 0x1;
SystemPagesDiv4 = (int)(systemFlags >> 25) & 0x1;
SystemPagesDiv2 = (int)(systemFlags >> 24) & 0x1;
SystemPagesMul1 = (int)(systemFlags >> 17) & 0x7F;
SystemPagesMul2 = (int)(systemFlags >> 11) & 0x3F;
SystemPagesMul4 = (int)(systemFlags >> 7) & 0xF;
SystemPagesMul8 = (int)(systemFlags >> 5) & 0x3;
SystemPagesMul16 = (int)(systemFlags >> 4) & 0x1;
SystemPagesSizeShift = (int)(systemFlags >> 0) & 0xF;
var systemBaseSize = BASE_SIZE << SystemPagesSizeShift;
var systemSize =
systemBaseSize * SystemPagesDiv16 / 16 +
systemBaseSize * SystemPagesDiv8 / 8 +
systemBaseSize * SystemPagesDiv4 / 4 +
systemBaseSize * SystemPagesDiv2 / 2 +
systemBaseSize * SystemPagesMul1 * 1 +
systemBaseSize * SystemPagesMul2 * 2 +
systemBaseSize * SystemPagesMul4 * 4 +
systemBaseSize * SystemPagesMul8 * 8 +
systemBaseSize * SystemPagesMul16 * 16;
GraphicsPagesDiv16 = (int)(graphicsFlags >> 27) & 0x1;
GraphicsPagesDiv8 = (int)(graphicsFlags >> 26) & 0x1;
GraphicsPagesDiv4 = (int)(graphicsFlags >> 25) & 0x1;
GraphicsPagesDiv2 = (int)(graphicsFlags >> 24) & 0x1;
GraphicsPagesMul1 = (int)(graphicsFlags >> 17) & 0x7F;
GraphicsPagesMul2 = (int)(graphicsFlags >> 11) & 0x3F;
GraphicsPagesMul4 = (int)(graphicsFlags >> 7) & 0xF;
GraphicsPagesMul8 = (int)(graphicsFlags >> 5) & 0x3;
GraphicsPagesMul16 = (int)(graphicsFlags >> 4) & 0x1;
GraphicsPagesSizeShift = (int)(graphicsFlags >> 0) & 0xF;
var graphicsBaseSize = BASE_SIZE << GraphicsPagesSizeShift;
var graphicsSize =
graphicsBaseSize * GraphicsPagesDiv16 / 16 +
graphicsBaseSize * GraphicsPagesDiv8 / 8 +
graphicsBaseSize * GraphicsPagesDiv4 / 4 +
graphicsBaseSize * GraphicsPagesDiv2 / 2 +
graphicsBaseSize * GraphicsPagesMul1 * 1 +
graphicsBaseSize * GraphicsPagesMul2 * 2 +
graphicsBaseSize * GraphicsPagesMul4 * 4 +
graphicsBaseSize * GraphicsPagesMul8 * 8 +
graphicsBaseSize * GraphicsPagesMul16 * 16;
SystemData = new byte[systemSize];
GraphicsData = new byte[graphicsSize];
var deflateStream = new DeflateStream(stream, CompressionMode.Decompress, true);
deflateStream.Read(SystemData, 0, systemSize);
deflateStream.Read(GraphicsData, 0, graphicsSize);
deflateStream.Close();
}
