private void UnpackFile(FileInPakLocation fipl, FileStream fs)
{
string outputFileName = this.UnpackFolder + Path.DirectorySeparatorChar + fipl.FileName.Replace('/', '\\');
FileInfo file = new FileInfo(outputFileName);
file.Directory.Create();
string fullName = file.FullName;
byte[] buffer = new byte[fipl.ReadSize];
fs.Seek(fipl.FileOffset, SeekOrigin.Begin);
fs.Read(buffer, 0, fipl.ReadSize);
if (fipl.Encrypted)
{
buffer = Decrypt(buffer, fipl.FileSize);
}
FileStream ofs = new FileStream(fullName, FileMode.Create, FileAccess.Write, FileShare.None);
ofs.Write(buffer, 0, fipl.FileSize);
ofs.Close();
buffer = null;
}
private void RunUnpack()
{
while (File.Exists(this.PakFile + ".bak"))
{
File.Delete(this.PakFile + ".bak");
Thread.Sleep(10);
}
while (File.Exists(this.SigFile + ".bak"))
{
File.Delete(this.SigFile + ".bak");
Thread.Sleep(10);
}
File.Move(this.PakFile, this.PakFile + ".bak");
File.Move(this.SigFile, this.SigFile + ".bak");
List <FileInPakLocation> files = new List <FileInPakLocation>();
FileStream fs = new FileStream(this.PakFile + ".bak", FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
BinaryReader br = new BinaryReader(fs);
if (fs.Length < 100)
{
FinishThreadSafe();
fs.Close();
Close();
}
br.BaseStream.Seek(-0x2C, SeekOrigin.End);
uint magic = br.ReadUInt32();
if (magic != 0x5A6F12E1)
{
FinishThreadSafe();
fs.Close();
Close();
}
br.ReadUInt32();
long offset = br.ReadInt64();
long size = br.ReadInt64();
br.BaseStream.Seek(offset, SeekOrigin.Begin);
ReadName(br);
int fileCount = br.ReadInt32();
for (int i = 0; i < fileCount; i++)
{
string fileName = ReadName(br);
long pos = br.BaseStream.Position;
long fOffset = br.ReadInt64();
long fZSize = br.ReadInt64();
long fSize = br.ReadInt64();
int compression = br.ReadInt32();
long hashLocation = br.BaseStream.Position;
br.BaseStream.Seek(20, SeekOrigin.Current);
byte enc = br.ReadByte();
int chunkSize = br.ReadInt32();
bool encrypted = (enc != 0);
int eSize = (int)fSize;
if (encrypted)
{
if (eSize % 16 > 0)
{
eSize = ((eSize / 16) + 1) * 16;
}
}
long bPos = br.BaseStream.Position;
fOffset += (bPos - pos);
files.Add(new FileInPakLocation(fileName, fOffset, (int)fSize, eSize, hashLocation, (enc != 0)));
}
int fCount = files.Count;
for (int i = 0; i < fCount; i++)
{
FileInPakLocation fipl = files[i];
this.ShowProgressThreadSafe(i, fCount);
UnpackFile(fipl, fs);
}
br = null;
fs.Close();
FinishThreadSafe();
}
