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refactored DX archives.

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This commit is contained in:
morkt 2016-03-14 20:38:30 +04:00
parent 51b0675cd0
commit 9084a4857f
2 changed files with 80 additions and 106 deletions
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175
ArcFormats/DxLib/ArcDX.cs
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@ -1,8 +1,8 @@
//! \file ArcDX.cs //! \file ArcDX.cs
//! \date Thu Oct 08 00:18:56 2015 //! \date Thu Oct 08 00:18:56 2015
//! \brief Encrypted Flatz archives with 'DX' signature. //! \brief DxLib engine archives with 'DX' signature.
// //
// Copyright (C) 2015 by morkt // Copyright (C) 2015-2016 by morkt
// //
// Permission is hereby granted, free of charge, to any person obtaining a copy // Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to // of this software and associated documentation files (the "Software"), to
@ -27,9 +27,10 @@ using System;
using System.Collections.Generic; using System.Collections.Generic;
using System.ComponentModel.Composition; using System.ComponentModel.Composition;
using System.IO; using System.IO;
using System.Linq;
using GameRes.Utility; using GameRes.Utility;
namespace GameRes.Formats.Flat namespace GameRes.Formats.DxLib
{ {
internal class DxArchive : ArcFile internal class DxArchive : ArcFile
{ {
@ -42,45 +43,50 @@ namespace GameRes.Formats.Flat
} }
} }
[Export(typeof(ArchiveFormat))] [Serializable]
public class DatOpener : ArchiveFormat public class DxScheme : ResourceScheme
{ {
public override string Tag { get { return "DAT/FLAT"; } } public IList<byte[]> KnownKeys;
public override string Description { get { return "Flat DX resource archive"; } } }
[Export(typeof(ArchiveFormat))]
public class DxOpener : ArchiveFormat
{
public override string Tag { get { return "DXA"; } }
public override string Description { get { return "DxLib engine resource archive"; } }
public override uint Signature { get { return 0; } } public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return true; } } public override bool IsHierarchic { get { return true; } }
public override bool CanCreate { get { return false; } } public override bool CanCreate { get { return false; } }
public DatOpener () public DxOpener ()
{ {
Signatures = new uint[] { 0x19EF8ED4 }; // the only recognized encryption scheme Extensions = new string[] { "dxa", "hud", "usi", "med", "dat" };
Signatures = new uint[] { 0x19EF8ED4, 0xA9FCCEDD, 0x0AEE0FD3, 0 };
} }
static readonly string[] KnownKeys = new string[] public static IList<byte[]> KnownKeys = new List<byte[]>();
{
"omanco", // Cross Quartz
};
public override ArcFile TryOpen (ArcView file) public override ArcFile TryOpen (ArcView file)
{ {
int signature = file.View.ReadUInt16 (0); uint signature = file.View.ReadUInt32 (0);
int version = file.View.ReadUInt16 (2); foreach (var key in KnownKeys)
var key = new byte[12];
foreach (var key_str in KnownKeys)
{ {
GetKeyBytes (key_str, key); uint sig_key = LittleEndian.ToUInt32 (key, 0);
int xor_id = key[0] | (key[1] << 8); uint sig_test = signature ^ sig_key;
int xor_ver = key[2] | (key[3] << 8); int version = (int)(sig_test >> 16);
if ((signature ^ xor_id) != 0x5844) // 'DX' if (0x5844 == (sig_test & 0xFFFF) && version <= 4) // 'DX'
continue; {
xor_ver ^= version; var dir = ReadIndex (file, version, key);
if (xor_ver < 1 || xor_ver > 4)
continue;
var dir = ReadIndex (file, xor_ver, key);
if (null != dir) if (null != dir)
{
// move last used key to the top of the known keys list
KnownKeys.Remove (key);
KnownKeys.Insert (0, key);
return new DxArchive (file, this, dir, key); return new DxArchive (file, this, dir, key);
}
break; break;
} }
}
return null; return null;
} }
@ -167,8 +173,8 @@ namespace GameRes.Formats.Flat
List<Entry> ReadIndex (ArcView file, int version, byte[] key) List<Entry> ReadIndex (ArcView file, int version, byte[] key)
{ {
var header = new byte[0x18]; var header = file.View.ReadBytes (4, 0x18);
if (0x18 != file.View.Read (4, header, 0, 0x18)) if (0x18 != header.Length)
return null; return null;
Decrypt (header, 0, header.Length, 4, key); Decrypt (header, 0, header.Length, 4, key);
var dx = new DxHeader { var dx = new DxHeader {
@ -197,27 +203,40 @@ namespace GameRes.Formats.Flat
} }
} }
private static void GetKeyBytes (string key, byte[] dst) public static byte[] CreateKey (string keyword)
{ {
int key_length = Math.Min (dst.Length, key.Length); byte[] key;
key_length = Encodings.cp932.GetBytes (key, 0, key_length, dst, 0); if (string.IsNullOrEmpty (keyword))
int j = 0;
for (int i = key_length; i < dst.Length; ++i)
{ {
dst[i] = dst[j++]; key = Enumerable.Repeat<byte> (0xAA, 12).ToArray();
} }
dst[0] = (byte)~dst[0]; else
dst[1] = (byte)((dst[1] >> 4) | (dst[1] << 4)); {
dst[2] = (byte)(dst[2] ^ 0x8A); key = new byte[12];
dst[3] = (byte)(~((dst[3] >> 4) | (dst[3] << 4))); int char_count = Math.Min (keyword.Length, 12);
dst[4] = (byte)~dst[4]; int length = Encodings.cp932.GetBytes (keyword, 0, char_count, key, 0);
dst[5] = (byte)(dst[5] ^ 0xAC); if (length < 12)
dst[6] = (byte)~dst[6]; Binary.CopyOverlapped (key, 0, length, 12-length);
dst[7] = (byte)(~((dst[7] >> 3) | (dst[7] << 5))); }
dst[8] = (byte)((dst[8] >> 5) | (dst[8] << 3)); key[0] ^= 0xFF;
dst[9] = (byte)(dst[9] ^ 0x7F); key[1] = Binary.RotByteR (key[1], 4);
dst[10] = (byte)(((dst[10] >> 4) | (dst[10] << 4)) ^ 0xD6); key[2] ^= 0x8A;
dst[11] = (byte)(dst[11] ^ 0xCC); key[3] = (byte)~Binary.RotByteR (key[3], 4);
key[4] ^= 0xFF;
key[5] ^= 0xAC;
key[6] ^= 0xFF;
key[7] = (byte)~Binary.RotByteR (key[7], 3);
key[8] = Binary.RotByteL (key[8], 3);
key[9] ^= 0x7F;
key[10] = (byte)(Binary.RotByteR (key[10], 4) ^ 0xD6);
key[11] ^= 0xCC;
return key;
}
public override ResourceScheme Scheme
{
get { return new DxScheme { KnownKeys = KnownKeys }; }
set { KnownKeys = ((DxScheme)value).KnownKeys; }
} }
} }
@ -334,62 +353,31 @@ namespace GameRes.Formats.Flat
#endregion #endregion
} }
internal class EncryptedStream : Stream internal class EncryptedStream : ProxyStream
{ {
private Stream m_stream;
private int m_base_pos; private int m_base_pos;
private byte[] m_key; private byte[] m_key;
private bool m_should_dispose;
public Stream BaseStream { get { return m_stream; } } public EncryptedStream (Stream stream, long base_position, byte[] key, bool leave_open = false)
: base (stream, leave_open)
public override bool CanRead { get { return m_stream.CanRead; } }
public override bool CanSeek { get { return m_stream.CanSeek; } }
public override bool CanWrite { get { return m_stream.CanWrite; } }
public override long Length { get { return m_stream.Length; } }
public override long Position
{ {
get { return m_stream.Position; }
set { m_stream.Position = value; }
}
public EncryptedStream (Stream input, long base_position, byte[] key)
{
m_stream = input;
m_key = key; m_key = key;
m_base_pos = (int)(base_position % m_key.Length); m_base_pos = (int)(base_position % m_key.Length);
m_should_dispose = true;
}
#region System.IO.Stream methods
public override void Flush()
{
m_stream.Flush();
}
public override long Seek (long offset, SeekOrigin origin)
{
return m_stream.Seek (offset, origin);
}
public override void SetLength (long length)
{
m_stream.SetLength (length);
} }
public override int Read (byte[] buffer, int offset, int count) public override int Read (byte[] buffer, int offset, int count)
{ {
var key_pos = m_base_pos + Position; var key_pos = m_base_pos + Position;
int read = m_stream.Read (buffer, offset, count); int read = BaseStream.Read (buffer, offset, count);
if (read > 0) if (read > 0)
DatOpener.Decrypt (buffer, offset, count, key_pos, m_key); DxOpener.Decrypt (buffer, offset, count, key_pos, m_key);
return read; return read;
} }
public override int ReadByte () public override int ReadByte ()
{ {
int key_pos = (int)((m_base_pos + Position) % m_key.Length); int key_pos = (int)((m_base_pos + Position) % m_key.Length);
int b = m_stream.ReadByte(); int b = BaseStream.ReadByte();
if (-1 != b) if (-1 != b)
{ {
b ^= m_key[key_pos]; b ^= m_key[key_pos];
@ -407,30 +395,13 @@ namespace GameRes.Formats.Flat
if (m_key.Length == key_pos) if (m_key.Length == key_pos)
key_pos = 0; key_pos = 0;
} }
m_stream.Write (write_buf, 0, count); BaseStream.Write (write_buf, 0, count);
} }
public override void WriteByte (byte value) public override void WriteByte (byte value)
{ {
int key_pos = (int)((m_base_pos + Position) % m_key.Length); int key_pos = (int)((m_base_pos + Position) % m_key.Length);
m_stream.WriteByte ((byte)(value ^ m_key[key_pos])); BaseStream.WriteByte ((byte)(value ^ m_key[key_pos]));
}
#endregion
#region IDisposable Members
bool disposed = false;
protected override void Dispose (bool disposing)
{
if (!disposed)
{
if (disposing && m_should_dispose)
{
m_stream.Dispose();
}
disposed = true;
base.Dispose (disposing);
} }
} }
#endregion
}
} }

5
supported.html
View File

@ -101,6 +101,7 @@ Yakuchu!<br/>
</td></tr> </td></tr>
<tr><td>*.tgf</td><td>-</td><td>No</td></tr> <tr><td>*.tgf</td><td>-</td><td>No</td></tr>
<tr class="odd"><td>*.arc</td><td><tt>MajiroArcV1.000</tt><br/><tt>MajiroArcV2.000</tt><br/><tt>MajiroArcV3.000</tt></td><td>Yes</td><td rowspan="3">Majiro</td><td rowspan="3"> <tr class="odd"><td>*.arc</td><td><tt>MajiroArcV1.000</tt><br/><tt>MajiroArcV2.000</tt><br/><tt>MajiroArcV3.000</tt></td><td>Yes</td><td rowspan="3">Majiro</td><td rowspan="3">
Ai Suru Tsuma, Misaki no Furin Shouko<br/>
Amber Quartz<br/> Amber Quartz<br/>
Arpeggio ~Kimi Iro no Melody~<br/> Arpeggio ~Kimi Iro no Melody~<br/>
Chikan Kizoku<br/> Chikan Kizoku<br/>
@ -571,8 +572,10 @@ Soukai no Oujo-tachi<br/>
Soukai no Valkyria <br/> Soukai no Valkyria <br/>
</td></tr> </td></tr>
<tr class="odd"><td>*.agf</td><td><tt>ACGF</tt></td><td>No</td></tr> <tr class="odd"><td>*.agf</td><td><tt>ACGF</tt></td><td>No</td></tr>
<tr><td>*.dat</td><td><tt>DX</tt></td><td>No</td><td>Flat</td><td> <tr><td>*.dxa<br/>*.usi<br/>*.hud<br/>*.med<br/>*.dat</td><td><tt>DX</tt><span class="footnote">encrypted</span></td><td>No</td><td>DxLib</td><td>
Ashita wa Kitto, Haremasu you ni<br/>
Cross Quartz<br/> Cross Quartz<br/>
Hyakki Yakou<br/>
</td></tr> </td></tr>
<tr class="odd"><td>*.tcd</td><td><tt>TCD3</tt></td><td>No</td><td rowspan="2">TopCat</td><td rowspan="2"> <tr class="odd"><td>*.tcd</td><td><tt>TCD3</tt></td><td>No</td><td rowspan="2">TopCat</td><td rowspan="2">
Atori no Sora to Shinchuu no Tsuki<br/> Atori no Sora to Shinchuu no Tsuki<br/>