mirror of
https://github.com/crskycode/GARbro.git
synced 2024-11-27 15:44:00 +08:00
548 lines
18 KiB
C#
548 lines
18 KiB
C#
//! \file ArcWARC.cs
|
|
//! \date Fri Apr 10 03:10:42 2015
|
|
//! \brief ShiinaRio engine archive format.
|
|
//
|
|
// Copyright (C) 2015-2016 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 System.Linq;
|
|
using GameRes.Compression;
|
|
using GameRes.Formats.Properties;
|
|
using GameRes.Formats.Strings;
|
|
using GameRes.Utility;
|
|
|
|
namespace GameRes.Formats.ShiinaRio // 椎名里緒
|
|
{
|
|
internal class WarOptions : ResourceOptions
|
|
{
|
|
public EncryptionScheme Scheme { get; set; }
|
|
}
|
|
|
|
internal class WarcEntry : PackedEntry
|
|
{
|
|
public long FileTime;
|
|
public uint Flags;
|
|
}
|
|
|
|
internal class WarcFile : ArcFile
|
|
{
|
|
public readonly Decoder Decoder;
|
|
|
|
public WarcFile (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, Decoder decoder)
|
|
: base (arc, impl, dir)
|
|
{
|
|
this.Decoder = decoder;
|
|
}
|
|
}
|
|
|
|
[Serializable]
|
|
public class WarcScheme : ResourceScheme
|
|
{
|
|
public EncryptionScheme[] KnownSchemes;
|
|
}
|
|
|
|
[Export(typeof(ArchiveFormat))]
|
|
public class WarOpener : ArchiveFormat
|
|
{
|
|
public override string Tag { get { return "WAR"; } }
|
|
public override string Description { get { return "ShiinaRio engine resource archive"; } }
|
|
public override uint Signature { get { return 0x43524157; } } // 'WARC'
|
|
public override bool IsHierarchic { get { return false; } }
|
|
public override bool CanCreate { get { return false; } }
|
|
|
|
public override ResourceScheme Scheme
|
|
{
|
|
get { return new WarcScheme { KnownSchemes = Decoder.KnownSchemes }; }
|
|
set { Decoder.KnownSchemes = ((WarcScheme)value).KnownSchemes; }
|
|
}
|
|
|
|
public override ArcFile TryOpen (ArcView file)
|
|
{
|
|
if (!file.View.AsciiEqual (4, " 1."))
|
|
return null;
|
|
int version = file.View.ReadByte (7) - 0x30;
|
|
version = 100 + version * 10;
|
|
if (170 != version && 130 != version && 150 != version)
|
|
throw new NotSupportedException ("Not supported WARC version");
|
|
uint index_offset = 0xf182ad82u ^ file.View.ReadUInt32 (8);
|
|
if (index_offset >= file.MaxOffset)
|
|
return null;
|
|
|
|
var scheme = QueryEncryption();
|
|
if (null == scheme)
|
|
return null;
|
|
var decoder = new Decoder (version, scheme);
|
|
|
|
uint max_index_len = decoder.MaxIndexLength;
|
|
uint index_length = (uint)Math.Min (max_index_len, file.MaxOffset - index_offset);
|
|
if (index_length < 8)
|
|
return null;
|
|
var enc_index = new byte[max_index_len];
|
|
if (index_length != file.View.Read (index_offset, enc_index, 0, index_length))
|
|
return null;
|
|
decoder.DecryptIndex (index_offset, enc_index);
|
|
Stream index;
|
|
if (version >= 170)
|
|
{
|
|
if (0x78 != enc_index[8]) // check if it looks like ZLib stream
|
|
return null;
|
|
var zindex = new MemoryStream (enc_index, 8, (int)index_length-8);
|
|
index = new ZLibStream (zindex, CompressionMode.Decompress);
|
|
}
|
|
else
|
|
{
|
|
var unpacked = new byte[max_index_len];
|
|
index_length = UnpackRNG (enc_index, 0, index_length, unpacked);
|
|
if (0 == index_length)
|
|
return null;
|
|
index = new MemoryStream (unpacked, 0, (int)index_length);
|
|
}
|
|
using (var header = new BinaryReader (index))
|
|
{
|
|
byte[] name_buf = new byte[decoder.EntryNameSize];
|
|
var dir = new List<Entry> ();
|
|
while (name_buf.Length == header.Read (name_buf, 0, name_buf.Length))
|
|
{
|
|
var name = Binary.GetCString (name_buf, 0, name_buf.Length);
|
|
var entry = FormatCatalog.Instance.Create<WarcEntry> (name);
|
|
entry.Offset = header.ReadUInt32();
|
|
entry.Size = header.ReadUInt32();
|
|
if (!entry.CheckPlacement (file.MaxOffset))
|
|
return null;
|
|
entry.UnpackedSize = header.ReadUInt32();
|
|
entry.IsPacked = entry.Size != entry.UnpackedSize;
|
|
entry.FileTime = header.ReadInt64();
|
|
entry.Flags = header.ReadUInt32();
|
|
if (0 != name.Length)
|
|
dir.Add (entry);
|
|
}
|
|
if (0 == dir.Count)
|
|
return null;
|
|
return new WarcFile (file, this, dir, decoder);
|
|
}
|
|
}
|
|
|
|
public override Stream OpenEntry (ArcFile arc, Entry entry)
|
|
{
|
|
var warc = arc as WarcFile;
|
|
var wentry = entry as WarcEntry;
|
|
if (null == warc || null == wentry || entry.Size < 8)
|
|
return arc.File.CreateStream (entry.Offset, entry.Size);
|
|
var enc_data = new byte[entry.Size];
|
|
if (entry.Size != arc.File.View.Read (entry.Offset, enc_data, 0, entry.Size))
|
|
return Stream.Null;
|
|
uint sig = LittleEndian.ToUInt32 (enc_data, 0);
|
|
uint unpacked_size = LittleEndian.ToUInt32 (enc_data, 4);
|
|
sig ^= (unpacked_size ^ 0x82AD82) & 0xffffff;
|
|
|
|
if (0 != (wentry.Flags & 0x80000000u) && entry.Size > 8) // encrypted entry
|
|
warc.Decoder.Decrypt (enc_data, 8, entry.Size-8);
|
|
if (warc.Decoder.ExtraCrypt != null)
|
|
warc.Decoder.ExtraCrypt.Decrypt (enc_data, 8, entry.Size-8, 0x202);
|
|
if (0 != (wentry.Flags & 0x20000000u) && entry.Size > 8)
|
|
warc.Decoder.Decrypt2 (enc_data, 8, entry.Size-8);
|
|
|
|
byte[] unpacked = enc_data;
|
|
UnpackMethod unpack = null;
|
|
switch (sig & 0xffffff)
|
|
{
|
|
case 0x314859: // 'YH1'
|
|
unpack = UnpackYH1;
|
|
break;
|
|
case 0x4b5059: // 'YPK'
|
|
unpack = UnpackYPK;
|
|
break;
|
|
case 0x5a4c59: // 'YLZ'
|
|
unpack = UnpackYLZ;
|
|
break;
|
|
}
|
|
if (null != unpack)
|
|
{
|
|
unpacked = new byte[unpacked_size];
|
|
unpack (enc_data, unpacked);
|
|
if (0 != (wentry.Flags & 0x40000000))
|
|
warc.Decoder.Decrypt2 (unpacked, 0, (uint)unpacked.Length);
|
|
if (warc.Decoder.ExtraCrypt != null)
|
|
warc.Decoder.ExtraCrypt.Decrypt (unpacked, 0, (uint)unpacked.Length, 0x204);
|
|
}
|
|
return new MemoryStream (unpacked);
|
|
}
|
|
|
|
delegate void UnpackMethod (byte[] input, byte[] output);
|
|
|
|
void UnpackYH1 (byte[] input, byte[] output)
|
|
{
|
|
if (0 != input[3])
|
|
{
|
|
uint key = 0x6393528e^0x4b4du; // 'KM'
|
|
unsafe
|
|
{
|
|
fixed (byte* buf_raw = input)
|
|
{
|
|
uint* encoded = (uint*)buf_raw;
|
|
int i;
|
|
for (i = 2; i < input.Length/4; ++i)
|
|
encoded[i] ^= key;
|
|
}
|
|
}
|
|
}
|
|
var decoder = new HuffmanReader (input, 8, input.Length-8, output);
|
|
decoder.Unpack();
|
|
}
|
|
|
|
void UnpackYPK (byte[] input, byte[] output)
|
|
{
|
|
if (0 != input[3])
|
|
{
|
|
uint key = ~0x4b4d4b4du; // 'KMKM'
|
|
unsafe
|
|
{
|
|
fixed (byte* buf_raw = input)
|
|
{
|
|
uint* encoded = (uint*)buf_raw;
|
|
int i;
|
|
for (i = 2; i < input.Length/4; ++i)
|
|
encoded[i] ^= key;
|
|
for (i *= 4; i < input.Length; ++i)
|
|
buf_raw[i] ^= (byte)key;
|
|
}
|
|
}
|
|
}
|
|
if (0x78 != input[8])
|
|
throw new ApplicationException ("Invalid decryption scheme");
|
|
var src = new MemoryStream (input, 8, input.Length-8);
|
|
using (var zlib = new ZLibStream (src, CompressionMode.Decompress))
|
|
zlib.Read (output, 0, output.Length);
|
|
}
|
|
|
|
void UnpackYLZ (byte[] input, byte[] output)
|
|
{
|
|
if (0 != input[3])
|
|
{
|
|
uint key = 0x4b4d4b4du; // 'KMKM'
|
|
unsafe
|
|
{
|
|
fixed (byte* buf_raw = input)
|
|
{
|
|
uint* encoded = (uint*)buf_raw;
|
|
int i;
|
|
for (i = 2; i < input.Length/4; ++i)
|
|
encoded[i] ^= key;
|
|
for (i *= 4; i < input.Length; ++i)
|
|
{
|
|
buf_raw[i] ^= (byte)key;
|
|
key >>= 8;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
var decoder = new YlzReader (input, 8, output);
|
|
decoder.Unpack();
|
|
}
|
|
|
|
uint UnpackRNG (byte[] input, int in_start, uint input_size, byte[] output)
|
|
{
|
|
var coder = new Kogado.CRangeCoder();
|
|
coder.InitQSModel (257, 12, 2000, null, false);
|
|
return coder.Decode (output, 0, (uint)output.Length, input, (uint)in_start, input_size);
|
|
}
|
|
|
|
public override ResourceOptions GetDefaultOptions ()
|
|
{
|
|
return new WarOptions {
|
|
Scheme = GetScheme (Settings.Default.WARCScheme),
|
|
};
|
|
}
|
|
|
|
public override object GetAccessWidget ()
|
|
{
|
|
return new GUI.WidgetWARC();
|
|
}
|
|
|
|
EncryptionScheme QueryEncryption ()
|
|
{
|
|
var options = Query<WarOptions> (arcStrings.ArcEncryptedNotice);
|
|
return options.Scheme;
|
|
}
|
|
|
|
static EncryptionScheme GetScheme (string scheme)
|
|
{
|
|
return Decoder.KnownSchemes.FirstOrDefault (s => s.Name == scheme);
|
|
}
|
|
}
|
|
|
|
internal class YlzReader
|
|
{
|
|
byte[] m_input;
|
|
byte[] m_output;
|
|
int m_src;
|
|
uint m_ctl = 0;
|
|
uint m_mask = 0;
|
|
|
|
public YlzReader (byte[] input, int src_offset, byte[] output)
|
|
{
|
|
m_input = input;
|
|
m_src = src_offset;
|
|
m_output = output;
|
|
}
|
|
|
|
bool GetCtlBit ()
|
|
{
|
|
bool bit = 0 != (m_ctl & m_mask);
|
|
m_mask >>= 1;
|
|
if (0 == m_mask)
|
|
{
|
|
m_ctl = LittleEndian.ToUInt32 (m_input, m_src);
|
|
m_src += 4;
|
|
m_mask = 0x80000000;
|
|
}
|
|
return bit;
|
|
}
|
|
|
|
int GetBits (int n)
|
|
{
|
|
int v = 0;
|
|
for (int i = 0; i < n; ++i)
|
|
{
|
|
v <<= 1;
|
|
if (GetCtlBit())
|
|
v |= 1;
|
|
}
|
|
return v;
|
|
}
|
|
|
|
public void Unpack ()
|
|
{
|
|
GetCtlBit();
|
|
int dst = 0;
|
|
while (dst < m_output.Length)
|
|
{
|
|
if (GetCtlBit())
|
|
{
|
|
m_output[dst++] = m_input[m_src++];
|
|
continue;
|
|
}
|
|
bool next_bit = GetCtlBit();
|
|
int offset = m_input[m_src++] | ~0xffff;
|
|
int ah = 0xff;
|
|
int count = 0;
|
|
if (next_bit) // 5e
|
|
{
|
|
if (GetCtlBit()) // 10d
|
|
{
|
|
ah = (ah << 1) | GetBits (1);
|
|
}
|
|
else if (GetCtlBit()) // 13e
|
|
{
|
|
ah = (ah << 1) | GetBits (1);
|
|
offset -= 0x200;
|
|
}
|
|
else if (GetCtlBit()) // 174
|
|
{
|
|
ah = (ah << 2) | GetBits (2);
|
|
offset -= 0x400;
|
|
}
|
|
else if (GetCtlBit()) // 1c0
|
|
{
|
|
ah = (ah << 3) | GetBits (3);
|
|
offset -= 0x800;
|
|
}
|
|
else
|
|
{
|
|
ah = (ah << 4) | GetBits (4);
|
|
offset -= 0x1000;
|
|
}
|
|
|
|
if (GetCtlBit()) // 296
|
|
{
|
|
count = 3;
|
|
}
|
|
else if (GetCtlBit()) // 2a2
|
|
{
|
|
count = 4;
|
|
}
|
|
else if (GetCtlBit()) // 2c2
|
|
{
|
|
count = 5 + GetBits (1);
|
|
}
|
|
else if (GetCtlBit()) // 2f8
|
|
{
|
|
count = 7 + GetBits (2);
|
|
}
|
|
else if (GetCtlBit()) // 33f
|
|
{
|
|
count = 0x0b + GetBits (3);
|
|
}
|
|
else
|
|
{
|
|
count = 0x13 + m_input[m_src++];
|
|
}
|
|
}
|
|
else if (GetCtlBit()) // 94
|
|
{
|
|
ah <<= 3; // b2
|
|
ah |= GetBits (3);
|
|
ah = (ah - 1) & 0xff;
|
|
count = 2;
|
|
}
|
|
else if (0xff == (offset & 0xff))
|
|
{
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
count = 2;
|
|
}
|
|
offset += (ah & 0xff) << 8; // 280
|
|
Binary.CopyOverlapped (m_output, dst + offset, dst, count);
|
|
dst += count;
|
|
}
|
|
}
|
|
}
|
|
|
|
internal class HuffmanReader
|
|
{
|
|
byte[] m_src;
|
|
byte[] m_dst;
|
|
|
|
uint[] lhs = new uint[511];
|
|
uint[] rhs = new uint[511];
|
|
|
|
int m_origin;
|
|
int m_total;
|
|
int m_input_pos;
|
|
int m_remaining;
|
|
int m_curbits;
|
|
uint m_cache;
|
|
uint m_curindex;
|
|
|
|
public HuffmanReader (byte[] src, int index, int length, byte[] dst)
|
|
{
|
|
m_src = src;
|
|
m_dst = dst;
|
|
m_origin = index;
|
|
m_total = length;
|
|
}
|
|
|
|
public HuffmanReader (byte[] src, byte[] dst) : this (src, 0, src.Length, dst)
|
|
{
|
|
}
|
|
|
|
public byte[] Unpack ()
|
|
{
|
|
m_input_pos = m_origin;
|
|
m_remaining = m_total;
|
|
m_curbits = 0;
|
|
m_curindex = 256;
|
|
uint index = CreateTree();
|
|
for (int i = 0; i < m_dst.Length; ++i)
|
|
{
|
|
uint idx = index;
|
|
while (idx >= 256)
|
|
{
|
|
if (--m_curbits < 0)
|
|
{
|
|
m_curbits = 31;
|
|
m_cache = ReadUInt32();
|
|
}
|
|
if (0 != ((m_cache >> m_curbits) & 1))
|
|
idx = rhs[idx];
|
|
else
|
|
idx = lhs[idx];
|
|
}
|
|
m_dst[i] = (byte)idx;
|
|
}
|
|
return m_dst;
|
|
}
|
|
|
|
uint ReadUInt32 ()
|
|
{
|
|
if (0 == m_remaining)
|
|
throw new InvalidFormatException ("Unexpected end of file");
|
|
uint v;
|
|
if (m_remaining >= 4)
|
|
{
|
|
v = LittleEndian.ToUInt32 (m_src, m_input_pos);
|
|
m_input_pos += 4;
|
|
m_remaining -= 4;
|
|
}
|
|
else
|
|
{
|
|
v = m_src[m_input_pos++];
|
|
int shift = 8;
|
|
while (--m_remaining != 0)
|
|
{
|
|
v |= (uint)(m_src[m_input_pos++] << shift);
|
|
shift += 8;
|
|
}
|
|
}
|
|
return v;
|
|
}
|
|
|
|
uint GetBits (int req_bits)
|
|
{
|
|
uint ret_val = 0;
|
|
if (req_bits > m_curbits)
|
|
{
|
|
do
|
|
{
|
|
req_bits -= m_curbits;
|
|
ret_val |= (m_cache & ((1u << m_curbits) - 1u)) << req_bits;
|
|
m_cache = ReadUInt32();
|
|
m_curbits = 32;
|
|
}
|
|
while (req_bits > 32);
|
|
}
|
|
m_curbits -= req_bits;
|
|
return ret_val | ((1u << req_bits) - 1u) & (m_cache >> m_curbits);
|
|
}
|
|
|
|
uint CreateTree ()
|
|
{
|
|
uint not_leaf;
|
|
|
|
if (m_curbits-- < 1)
|
|
{
|
|
m_curbits = 31;
|
|
m_cache = ReadUInt32();
|
|
not_leaf = m_cache >> 31;
|
|
}
|
|
else
|
|
not_leaf = (m_cache >> m_curbits) & 1;
|
|
|
|
uint i;
|
|
if (0 != not_leaf)
|
|
{
|
|
i = m_curindex++;
|
|
lhs[i] = CreateTree();
|
|
rhs[i] = CreateTree();
|
|
}
|
|
else
|
|
i = GetBits (8);
|
|
return i;
|
|
}
|
|
}
|
|
}
|