public override Stream OpenEntry(ArcFile arc, Entry entry)
{
Stream input = arc.File.CreateStream(entry.Offset, entry.Size);
var dx_arc = arc as DxArchive;
if (null == dx_arc)
{
return(input);
}
var dx_ent = (PackedEntry)entry;
long dec_offset = entry.Offset;
if (dx_arc.Version > 5)
{
dec_offset = dx_ent.UnpackedSize;
}
input = new EncryptedStream(input, dec_offset, dx_arc.Key);
if (!dx_ent.IsPacked)
{
return(input);
}
using (input)
{
var data = Unpack(input);
return(new BinMemoryStream(data, entry.Name));
}
}
List <Entry> ReadIndex(ArcView file, int version, byte[] key)
{
var header = file.View.ReadBytes(4, 0x18);
if (0x18 != header.Length)
{
return(null);
}
Decrypt(header, 0, header.Length, 4, key);
var dx = new DxHeader {
IndexSize = LittleEndian.ToUInt32(header, 0),
BaseOffset = LittleEndian.ToUInt32(header, 4),
IndexOffset = LittleEndian.ToUInt32(header, 8),
FileTable = LittleEndian.ToUInt32(header, 0x0c),
DirTable = LittleEndian.ToUInt32(header, 0x10),
};
if (dx.DirTable >= dx.IndexSize || dx.FileTable >= dx.IndexSize)
{
return(null);
}
using (var encrypted = file.CreateStream(dx.IndexOffset, dx.IndexSize))
using (var index = new EncryptedStream(encrypted, dx.IndexOffset, key))
using (var reader = new IndexReader(dx, version, index))
{
return(reader.Read());
}
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
Stream input = arc.File.CreateStream(entry.Offset, entry.Size);
var dx_arc = arc as DxArchive;
if (null == dx_arc)
{
return(input);
}
input = new EncryptedStream(input, entry.Offset, dx_arc.Key);
var dx_ent = entry as PackedEntry;
if (null == dx_ent || !dx_ent.IsPacked)
{
return(input);
}
using (input)
{
var data = Unpack(input);
return(new MemoryStream(data));
}
}
List <Entry> ReadIndex(ArcView file, int version, byte[] key)
{
DxHeader dx = null;
if (version <= 4)
{
dx = ReadArcHeaderV4(file, version, key);
}
else if (6 == version)
{
dx = ReadArcHeaderV6(file, version, key);
}
if (null == dx || dx.DirTable >= dx.IndexSize || dx.FileTable >= dx.IndexSize)
{
return(null);
}
using (var encrypted = file.CreateStream(dx.IndexOffset, dx.IndexSize))
using (var index = new EncryptedStream(encrypted, 6 == version ? 0 : dx.IndexOffset, key))
using (var reader = IndexReader.Create(dx, version, index))
{
return(reader.Read());
}
}
List<Entry> ReadIndex(ArcView file, int version, byte[] key)
{
var header = file.View.ReadBytes (4, 0x18);
if (0x18 != header.Length)
return null;
Decrypt (header, 0, header.Length, 4, key);
var dx = new DxHeader {
IndexSize = LittleEndian.ToUInt32 (header, 0),
BaseOffset = LittleEndian.ToUInt32 (header, 4),
IndexOffset = LittleEndian.ToUInt32 (header, 8),
FileTable = LittleEndian.ToUInt32 (header, 0x0c),
DirTable = LittleEndian.ToUInt32 (header, 0x10),
};
if (dx.DirTable >= dx.IndexSize || dx.FileTable >= dx.IndexSize)
return null;
using (var encrypted = file.CreateStream (dx.IndexOffset, dx.IndexSize))
using (var index = new EncryptedStream (encrypted, dx.IndexOffset, key))
using (var reader = new IndexReader (dx, version, index))
{
return reader.Read();
}
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
Stream input = arc.File.CreateStream (entry.Offset, entry.Size);
var dx_arc = arc as DxArchive;
if (null == dx_arc)
return input;
input = new EncryptedStream (input, entry.Offset, dx_arc.Key);
var dx_ent = entry as PackedEntry;
if (null == dx_ent || !dx_ent.IsPacked)
return input;
using (input)
{
var data = Unpack (input);
return new MemoryStream (data);
}
}