mirror of
https://github.com/crskycode/GARbro.git
synced 2024-11-23 21:55:34 +08:00
369 lines
13 KiB
C#
369 lines
13 KiB
C#
//! \file ArcARC4.cs
|
|
//! \date Wed Aug 10 15:50:21 2016
|
|
//! \brief Caramel BOX resource archive.
|
|
//
|
|
// Copyright (C) 2016 by morkt
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to
|
|
// deal in the Software without restriction, including without limitation the
|
|
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
// sell copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
// IN THE SOFTWARE.
|
|
//
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.ComponentModel.Composition;
|
|
using System.IO;
|
|
using GameRes.Utility;
|
|
|
|
namespace GameRes.Formats.CaramelBox
|
|
{
|
|
internal class Arc4Entry : PackedEntry
|
|
{
|
|
public List<long> Segments;
|
|
}
|
|
|
|
[Export(typeof(ArchiveFormat))]
|
|
public class Arc4Opener : ArchiveFormat
|
|
{
|
|
public override string Tag { get { return "ARC4"; } }
|
|
public override string Description { get { return "Caramel BOX resource archive"; } }
|
|
public override uint Signature { get { return 0x34435241; } } // 'ARC4'
|
|
public override bool IsHierarchic { get { return false; } }
|
|
public override bool CanWrite { get { return false; } }
|
|
|
|
public Arc4Opener ()
|
|
{
|
|
Extensions = new string[] { "bin", "dat", "データ" };
|
|
}
|
|
|
|
public override ArcFile TryOpen (ArcView file)
|
|
{
|
|
if (0x010000 != file.View.ReadUInt32 (4))
|
|
return null;
|
|
int count = file.View.ReadInt32 (0x10);
|
|
if (!IsSaneCount (count))
|
|
return null;
|
|
uint index_length = file.View.ReadUInt32 (8);
|
|
uint alignment = file.View.ReadUInt32 (0xC);
|
|
int index_offset = file.View.ReadInt32 (0x14);
|
|
int names_offset = file.View.ReadInt32 (0x1C) - index_offset;
|
|
int segment_table = file.View.ReadInt32 (0x24) - index_offset;
|
|
uint base_offset = file.View.ReadUInt32 (0x2C);
|
|
if (0 == alignment || index_offset <= 0 || names_offset <= 0 || segment_table <= 0)
|
|
return null;
|
|
if (!file.View.AsciiEqual (index_offset, "tZ"))
|
|
return null;
|
|
byte[] index;
|
|
using (var packed = file.CreateStream (index_offset, index_length))
|
|
using (var tz = new TzCompression (packed))
|
|
index = tz.Unpack();
|
|
|
|
int current_offset = 0;
|
|
var dir = new List<Entry> (count);
|
|
for (int i = 0; i < count; ++i)
|
|
{
|
|
int name_pos = ReadInt24 (index, current_offset) * 2;
|
|
int name_length = index[current_offset+3];
|
|
int chunk_count = index[current_offset+4];
|
|
int offset = ReadInt24 (index, current_offset+5);
|
|
var name = Binary.GetCString (index, names_offset + name_pos, name_length);
|
|
var entry = FormatCatalog.Instance.Create<Arc4Entry> (name);
|
|
entry.Segments = new List<long> (chunk_count);
|
|
if (chunk_count > 1)
|
|
{
|
|
int segment_pos = segment_table + 3 * offset;
|
|
for (int j = 0; j < chunk_count; ++j)
|
|
{
|
|
entry.Segments.Add (ReadInt24 (index, segment_pos) + base_offset);
|
|
segment_pos += 3;
|
|
}
|
|
}
|
|
else
|
|
entry.Segments.Add (offset + base_offset);
|
|
|
|
for (int j = 0; j < chunk_count; ++j)
|
|
entry.Segments[j] *= alignment;
|
|
dir.Add (entry);
|
|
current_offset += 8;
|
|
}
|
|
foreach (Arc4Entry entry in dir)
|
|
{
|
|
uint size = 0;
|
|
foreach (var segment in entry.Segments)
|
|
{
|
|
size += Binary.BigEndian (file.View.ReadUInt32 (segment+4));
|
|
}
|
|
entry.Offset = entry.Segments[0] + 0x10;
|
|
entry.Size = size;
|
|
entry.IsPacked = file.View.AsciiEqual (entry.Offset, "tZ");
|
|
if (entry.IsPacked)
|
|
entry.UnpackedSize = file.View.ReadUInt32 (entry.Offset+2);
|
|
else
|
|
entry.UnpackedSize = size;
|
|
}
|
|
return new ArcFile (file, this, dir);
|
|
}
|
|
|
|
public override Stream OpenEntry (ArcFile arc, Entry entry)
|
|
{
|
|
var xent = (Arc4Entry)entry;
|
|
Stream input;
|
|
if (1 == xent.Segments.Count)
|
|
input = arc.File.CreateStream (entry.Offset, entry.Size);
|
|
else
|
|
input = new Arc4Stream (arc.File, xent);
|
|
if (!xent.IsPacked)
|
|
return input;
|
|
using (input)
|
|
using (var tz = new TzCompression (input))
|
|
return new MemoryStream (tz.Unpack());
|
|
}
|
|
|
|
static int ReadInt24 (byte[] data, int pos)
|
|
{
|
|
return data[pos] << 16 | data[pos+1] << 8 | data[pos+2];
|
|
}
|
|
}
|
|
|
|
internal sealed class TzCompression : IDisposable
|
|
{
|
|
BinaryReader m_input;
|
|
|
|
public TzCompression (Stream stream)
|
|
{
|
|
m_input = new ArcView.Reader (stream);
|
|
}
|
|
|
|
public byte[] Unpack ()
|
|
{
|
|
int signature = m_input.ReadUInt16();
|
|
uint unpacked_size = m_input.ReadUInt32();
|
|
var data = new byte[unpacked_size];
|
|
int dst = 0;
|
|
var buffer = new byte[0x10000];
|
|
while (dst < data.Length)
|
|
{
|
|
signature = m_input.ReadUInt16();
|
|
ushort block_size = m_input.ReadUInt16();
|
|
ushort unpacked_block_size = m_input.ReadUInt16();
|
|
if (0 == unpacked_block_size)
|
|
throw new InvalidFormatException();
|
|
|
|
ushort key = m_input.ReadUInt16();
|
|
if (block_size != m_input.Read (buffer, 0, block_size))
|
|
throw new EndOfStreamException();
|
|
DecryptBlock (buffer, 0, block_size, key);
|
|
if (0x7453 == signature) // 'St'
|
|
Buffer.BlockCopy (buffer, 0, data, dst, unpacked_block_size);
|
|
else if (0x745A == signature) // 'Zt'
|
|
UnpackBlock (buffer, 0, block_size, data, dst, unpacked_block_size);
|
|
else
|
|
throw new InvalidFormatException();
|
|
dst += unpacked_block_size;
|
|
}
|
|
return data;
|
|
}
|
|
|
|
unsafe void DecryptBlock (byte[] data, int pos, int count, uint key)
|
|
{
|
|
fixed (byte* data8 = &data[pos])
|
|
{
|
|
ushort* data16 = (ushort*)data8;
|
|
for (int i = count / 2; i > 0; --i)
|
|
{
|
|
key *= 0x1465D9;
|
|
key += 0x0FB5;
|
|
*data16++ -= (ushort)(key >> 16);
|
|
}
|
|
}
|
|
}
|
|
|
|
void UnpackBlock (byte[] input, int src, int input_size,
|
|
byte[] output, int dst, int output_size)
|
|
{
|
|
int src_end = src + input_size;
|
|
while (src < src_end)
|
|
{
|
|
int ctl = input[src++];
|
|
if (0 == ctl)
|
|
break;
|
|
if (0 != (ctl & 0x80))
|
|
{
|
|
int offset, count;
|
|
if (0 != (ctl & 0x40))
|
|
{
|
|
if (0 != (ctl & 0x20))
|
|
{
|
|
ctl = (ctl << 8) | input[src++];
|
|
ctl = (ctl << 8) | input[src++];
|
|
|
|
count = (ctl & 0x3F) + 4;
|
|
offset = (ctl >> 6) & 0x7FFF;
|
|
}
|
|
else
|
|
{
|
|
ctl = (ctl << 8) | input[src++];
|
|
|
|
count = (ctl & 7) + 3;
|
|
offset = (ctl >> 3) & 0x3FF;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
count = (ctl & 3) + 2;
|
|
offset = (ctl >> 2) & 0xF;
|
|
}
|
|
++offset;
|
|
Binary.CopyOverlapped (output, dst - offset, dst, count);
|
|
dst += count;
|
|
}
|
|
else
|
|
{
|
|
Buffer.BlockCopy (input, src, output, dst, ctl);
|
|
src += ctl;
|
|
dst += ctl;
|
|
}
|
|
}
|
|
}
|
|
|
|
#region IDisposable Members
|
|
bool _disposed = false;
|
|
public void Dispose ()
|
|
{
|
|
if (!_disposed)
|
|
{
|
|
m_input.Dispose();
|
|
_disposed = true;
|
|
}
|
|
}
|
|
#endregion
|
|
}
|
|
|
|
internal class Arc4Stream : Stream
|
|
{
|
|
ArcView m_file;
|
|
IEnumerator<long> m_segment;
|
|
Stream m_stream;
|
|
bool m_eof = false;
|
|
|
|
public override bool CanRead { get { return !_disposed; } }
|
|
public override bool CanSeek { get { return false; } }
|
|
public override bool CanWrite { get { return false; } }
|
|
public override long Length { get { throw new NotSupportedException ("Arc4Stream.Length not supported"); } }
|
|
public override long Position
|
|
{
|
|
get { throw new NotSupportedException ("Arc4Stream.Position not supported."); }
|
|
set { throw new NotSupportedException ("Arc4Stream.Position not supported."); }
|
|
}
|
|
|
|
public Arc4Stream (ArcView file, Arc4Entry entry)
|
|
{
|
|
m_file = file;
|
|
m_segment = entry.Segments.GetEnumerator();
|
|
NextSegment();
|
|
}
|
|
|
|
private void NextSegment ()
|
|
{
|
|
if (!m_segment.MoveNext())
|
|
{
|
|
m_eof = true;
|
|
return;
|
|
}
|
|
var prev_stream = m_stream;
|
|
long offset = m_segment.Current;
|
|
var segment_size = Binary.BigEndian (m_file.View.ReadUInt32 (offset+4));
|
|
m_stream = m_file.CreateStream (offset+0x10, segment_size);
|
|
if (null != prev_stream)
|
|
prev_stream.Dispose();
|
|
}
|
|
|
|
public override int Read (byte[] buffer, int offset, int count)
|
|
{
|
|
int total = 0;
|
|
while (!m_eof && count > 0)
|
|
{
|
|
int read = m_stream.Read (buffer, offset, count);
|
|
if (0 != read)
|
|
{
|
|
total += read;
|
|
offset += read;
|
|
count -= read;
|
|
}
|
|
if (0 != count)
|
|
NextSegment();
|
|
}
|
|
return total;
|
|
}
|
|
|
|
public override int ReadByte ()
|
|
{
|
|
int b = -1;
|
|
while (!m_eof)
|
|
{
|
|
b = m_stream.ReadByte();
|
|
if (-1 != b)
|
|
break;
|
|
NextSegment();
|
|
}
|
|
return b;
|
|
}
|
|
|
|
public override void Flush ()
|
|
{
|
|
}
|
|
|
|
public override long Seek (long offset, SeekOrigin origin)
|
|
{
|
|
throw new NotSupportedException ("Arc4Stream.Seek method is not supported");
|
|
}
|
|
|
|
public override void SetLength (long length)
|
|
{
|
|
throw new NotSupportedException ("Arc4Stream.SetLength method is not supported");
|
|
}
|
|
|
|
public override void Write (byte[] buffer, int offset, int count)
|
|
{
|
|
throw new NotSupportedException ("Arc4Stream.Write method is not supported");
|
|
}
|
|
|
|
public override void WriteByte (byte value)
|
|
{
|
|
throw new NotSupportedException("Arc4Stream.WriteByte method is not supported");
|
|
}
|
|
|
|
#region IDisposable Members
|
|
bool _disposed = false;
|
|
protected override void Dispose (bool disposing)
|
|
{
|
|
if (!_disposed)
|
|
{
|
|
if (disposing)
|
|
{
|
|
if (null != m_stream)
|
|
m_stream.Dispose();
|
|
m_segment.Dispose();
|
|
}
|
|
_disposed = true;
|
|
base.Dispose (disposing);
|
|
}
|
|
}
|
|
#endregion
|
|
}
|
|
}
|