public override ArcFile TryOpen(ArcView file)
{
if ((file.View.ReadInt32(0) | file.View.ReadInt32(4) | file.View.ReadInt32(8)) != 0)
{
return(null);
}
int key = file.View.ReadInt32(0x10);
int count = file.View.ReadInt32(0x14);
if (!IsSaneCount(count))
{
return(null);
}
uint index_offset = 0x18;
var index = new Dictionary <int, Entry> (count);
for (int i = 0; i < count; ++i)
{
int id = file.View.ReadInt32(index_offset);
var entry = new Entry {
Offset = file.View.ReadUInt32(index_offset + 4),
Size = file.View.ReadUInt32(index_offset + 8),
};
if (!entry.CheckPlacement(file.MaxOffset))
{
return(null);
}
index[id] = entry;
index_offset += 12;
}
var names_entry = index[0];
var names = file.View.ReadBytes(names_entry.Offset, names_entry.Size);
if (key != 0)
{
DecryptData(names, key);
}
using (var input = new BinMemoryStream(names))
{
while (input.PeekByte() != -1)
{
int id = input.ReadInt32();
var name = input.ReadCString();
if (!string.IsNullOrEmpty(name))
{
var entry = index[id];
entry.Name = name;
entry.Type = FormatCatalog.Instance.GetTypeFromName(name);
}
}
}
var dir = index.Values.Where(e => !string.IsNullOrEmpty(e.Name)).ToList();
return(new YkArchive(file, this, dir, key));
}
public override ArcFile TryOpen(ArcView file)
{
if (!VFS.IsPathEqualsToFileName(file.Name, "AVGDatas.pck"))
{
return(null);
}
int seed = Binary.BigEndian(file.View.ReadInt32(file.MaxOffset - 104));
var header = file.View.ReadBytes(file.MaxOffset - 100, 100);
var rnd = new RandomGenerator();
rnd.Init(seed);
rnd.Decrypt(header, 0, header.Length);
uint checksum = (uint)(header[1] | header[2] << 8 | header[0] << 16 | header[3] << 24) ^ 0xDEFD32D3;
uint length = BigEndian.ToUInt32(header, 24);
if (checksum != length)
{
return(null);
}
uint idx_pos = BigEndian.ToUInt32(header, 28);
uint idx_size = Binary.BigEndian(file.View.ReadUInt32(idx_pos));
uint index_size;
var index = ReadChunk(file, 8, idx_pos + 4, out index_size);
if (index_size >= 0x80000000)
{
index_size &= 0x7FFFFFFF;
var unpacked = new byte[idx_size];
LzssUnpack(index, index.Length, unpacked);
index = unpacked;
}
using (var input = new BinMemoryStream(index))
{
var dir = new List <Entry>();
int dir_count = 0;
while (input.PeekByte() != -1)
{
input.ReadInt32();
input.ReadInt32();
input.ReadInt32();
int count = Binary.BigEndian(input.ReadInt32());
var dir_name = dir_count.ToString("X4");
for (int i = 0; i < count; ++i)
{
var name = input.ReadCString(0x28);
name = Path.Combine(dir_name, name);
var entry = Create <PckEntry> (name);
entry.Offset = Binary.BigEndian(input.ReadUInt32());
entry.Size = Binary.BigEndian(input.ReadUInt32());
entry.IsEncrypted = input.ReadInt32() != 0;
entry.UnpackedSize = input.ReadUInt32();
entry.IsPacked = entry.Size != entry.UnpackedSize;
if (!entry.CheckPlacement(file.MaxOffset))
{
return(null);
}
dir.Add(entry);
}
++dir_count;
}
return(new ArcFile(file, this, dir));
}
}