mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-26 04:44:14 +08:00
463 lines
16 KiB
C#
463 lines
16 KiB
C#
//! \file ArcQLIE.cs
|
|
//! \date Mon Jun 15 04:03:18 2015
|
|
//! \brief QLIE engine archives implementation.
|
|
//
|
|
// Copyright (C) 2015 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.IO;
|
|
using System.Collections.Generic;
|
|
using System.ComponentModel.Composition;
|
|
using System.Diagnostics;
|
|
using System.Linq;
|
|
using GameRes.Utility;
|
|
using GameRes.Formats.Properties;
|
|
using GameRes.Formats.Strings;
|
|
|
|
namespace GameRes.Formats.Qlie
|
|
{
|
|
internal class QlieEntry : PackedEntry
|
|
{
|
|
public bool IsEncrypted;
|
|
public uint Hash;
|
|
public byte[] RawName;
|
|
|
|
/// <summary>
|
|
/// Data from a separate key file "key.fkey" that comes with installed game.
|
|
/// null if not used.
|
|
/// </summary>
|
|
public byte[] KeyFile;
|
|
}
|
|
|
|
internal class QlieArchive : ArcFile
|
|
{
|
|
/// <summary>
|
|
/// Hash generated from the key data contained within archive index.
|
|
/// </summary>
|
|
public uint Hash;
|
|
|
|
/// <summary>
|
|
/// Internal game data used to decrypt encrypted entries.
|
|
/// null if not used.
|
|
/// </summary>
|
|
public byte[] GameKeyData;
|
|
|
|
public QlieArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir,
|
|
uint hash, byte[] key_data)
|
|
: base (arc, impl, dir)
|
|
{
|
|
Hash = hash;
|
|
GameKeyData = key_data;
|
|
}
|
|
}
|
|
|
|
internal class QlieOptions : ResourceOptions
|
|
{
|
|
public byte[] GameKeyData;
|
|
}
|
|
|
|
[Serializable]
|
|
public class QlieScheme : ResourceScheme
|
|
{
|
|
public Dictionary<string, byte[]> KnownKeys;
|
|
}
|
|
|
|
[Export(typeof(ArchiveFormat))]
|
|
public class PackOpener : ArchiveFormat
|
|
{
|
|
public override string Tag { get { return "PACK/QLIE"; } }
|
|
public override string Description { get { return "QLIE engine resource archive"; } }
|
|
public override uint Signature { get { return 0; } }
|
|
public override bool IsHierarchic { get { return true; } }
|
|
public override bool CanCreate { get { return false; } }
|
|
|
|
public PackOpener ()
|
|
{
|
|
Extensions = new string [] { "pack" };
|
|
}
|
|
|
|
/// <summary>
|
|
/// Possible locations of the 'key.fkey' file relative to an archive being accessed.
|
|
/// </summary>
|
|
static readonly string[] KeyLocations = { ".", "..", @"..\DLL", "DLL" };
|
|
|
|
public static Dictionary<string, byte[]> KnownKeys = new Dictionary<string, byte[]>();
|
|
|
|
public override ResourceScheme Scheme
|
|
{
|
|
get { return new QlieScheme { KnownKeys = KnownKeys }; }
|
|
set { KnownKeys = ((QlieScheme)value).KnownKeys; }
|
|
}
|
|
|
|
public override ArcFile TryOpen (ArcView file)
|
|
{
|
|
if (file.MaxOffset <= 0x1c)
|
|
return null;
|
|
long index_offset = file.MaxOffset - 0x1c;
|
|
if (!file.View.AsciiEqual (index_offset, "FilePackVer")
|
|
|| !file.View.AsciiEqual (index_offset+0xC, ".0"))
|
|
return null;
|
|
int pack_version = file.View.ReadByte (index_offset+0xB) - '0';
|
|
if (pack_version < 1 || pack_version > 3)
|
|
throw new NotSupportedException ("Not supported QLIE archive version");
|
|
int count = file.View.ReadInt32 (index_offset+0x10);
|
|
if (!IsSaneCount (count))
|
|
return null;
|
|
index_offset = file.View.ReadInt64 (index_offset+0x14);
|
|
if (index_offset < 0 || index_offset >= file.MaxOffset)
|
|
return null;
|
|
|
|
byte[] arc_key = null;
|
|
byte[] key_file = null;
|
|
uint name_key = 0xC4; // default name encryption key for versions 1 and 2
|
|
if (3 == pack_version)
|
|
{
|
|
key_file = FindKeyFile (file);
|
|
// currently, user is prompted to choose encryption scheme only if there's 'key.fkey' file found.
|
|
if (key_file != null)
|
|
arc_key = QueryEncryption();
|
|
if (null == arc_key)
|
|
key_file = null;
|
|
|
|
var key_data = new byte[0x100];
|
|
file.View.Read (file.MaxOffset-0x41C, key_data, 0, 0x100);
|
|
name_key = GenerateKey (key_data) & 0x0FFFFFFFu;
|
|
}
|
|
|
|
var name_buffer = new byte[0x100];
|
|
var dir = new List<Entry> (count);
|
|
for (int i = 0; i < count; ++i)
|
|
{
|
|
int name_length = file.View.ReadUInt16 (index_offset);
|
|
if (name_length > name_buffer.Length)
|
|
name_buffer = new byte[name_length];
|
|
if (name_length != file.View.Read (index_offset+2, name_buffer, 0, (uint)name_length))
|
|
return null;
|
|
|
|
int key = name_length + ((int)name_key ^ 0x3e);
|
|
for (int k = 0; k < name_length; ++k)
|
|
name_buffer[k] ^= (byte)(((k + 1) ^ key) + k + 1);
|
|
|
|
string name = Encodings.cp932.GetString (name_buffer, 0, name_length);
|
|
var entry = FormatCatalog.Instance.Create<QlieEntry> (name);
|
|
if (key_file != null)
|
|
entry.RawName = name_buffer.Take (name_length).ToArray();
|
|
|
|
index_offset += 2 + name_length;
|
|
entry.Offset = file.View.ReadInt64 (index_offset);
|
|
entry.Size = file.View.ReadUInt32 (index_offset+8);
|
|
if (!entry.CheckPlacement (file.MaxOffset))
|
|
return null;
|
|
entry.UnpackedSize = file.View.ReadUInt32 (index_offset+12);
|
|
entry.IsPacked = 0 != file.View.ReadInt32 (index_offset+0x10);
|
|
entry.IsEncrypted = 0 != file.View.ReadInt32 (index_offset+0x14);
|
|
entry.Hash = file.View.ReadUInt32 (index_offset+0x18);
|
|
entry.KeyFile = key_file;
|
|
if (3 == pack_version && null != arc_key && entry.Name.Contains ("pack_keyfile"))
|
|
{
|
|
// note that 'pack_keyfile' itself is encrypted using 'key.fkey' file contents.
|
|
key_file = ReadEntryBytes (file, entry, name_key, arc_key);
|
|
}
|
|
dir.Add (entry);
|
|
index_offset += 0x1c;
|
|
}
|
|
if (pack_version < 3)
|
|
name_key = 0;
|
|
return new QlieArchive (file, this, dir, name_key, arc_key);
|
|
}
|
|
|
|
public override Stream OpenEntry (ArcFile arc, Entry entry)
|
|
{
|
|
var qent = entry as QlieEntry;
|
|
var qarc = arc as QlieArchive;
|
|
if (null == qent || null == qarc || (!qent.IsEncrypted && !qent.IsPacked))
|
|
return arc.File.CreateStream (entry.Offset, entry.Size);
|
|
var data = ReadEntryBytes (arc.File, qent, qarc.Hash, qarc.GameKeyData);
|
|
return new MemoryStream (data);
|
|
}
|
|
|
|
private byte[] ReadEntryBytes (ArcView file, QlieEntry entry, uint hash, byte[] game_key)
|
|
{
|
|
var data = new byte[entry.Size];
|
|
file.View.Read (entry.Offset, data, 0, entry.Size);
|
|
if (entry.IsEncrypted)
|
|
{
|
|
if (entry.KeyFile != null)
|
|
DecryptV3 (data, 0, data.Length, entry.RawName, hash, entry.KeyFile, game_key);
|
|
else
|
|
Decrypt (data, 0, data.Length, hash);
|
|
}
|
|
if (entry.IsPacked)
|
|
{
|
|
var unpacked = Decompress (data);
|
|
if (null != unpacked)
|
|
data = unpacked;
|
|
}
|
|
return data;
|
|
}
|
|
|
|
private void Decrypt (byte[] buffer, int offset, int length, uint key)
|
|
{
|
|
if (offset < 0)
|
|
throw new ArgumentOutOfRangeException ("offset");
|
|
if (length > buffer.Length || offset > buffer.Length - length)
|
|
throw new ArgumentOutOfRangeException ("length");
|
|
|
|
ulong hash = 0xA73C5F9DA73C5F9Dul;
|
|
ulong xor = ((uint)length + key) ^ 0xFEC9753Eu;
|
|
xor |= xor << 32;
|
|
unsafe
|
|
{
|
|
fixed (byte* raw = buffer)
|
|
{
|
|
ulong* encoded = (ulong*)(raw + offset);
|
|
for (int i = 0; i < length / 8; ++i)
|
|
{
|
|
hash = MMX.PAddD (hash, 0xCE24F523CE24F523ul) ^ xor;
|
|
xor = *encoded ^ hash;
|
|
*encoded++ = xor;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private void DecryptV3 (byte[] data, int offset, int length, byte[] file_name,
|
|
uint arc_hash, byte[] key_file, byte[] game_key)
|
|
{
|
|
// play it safe with 'unsafe' sections
|
|
if (offset < 0)
|
|
throw new ArgumentOutOfRangeException ("offset");
|
|
if (length > data.Length || offset > data.Length - length)
|
|
throw new ArgumentOutOfRangeException ("length");
|
|
|
|
if (length < 8)
|
|
return;
|
|
|
|
uint hash = 0x85F532;
|
|
uint seed = 0x33F641;
|
|
|
|
for (uint i = 0; i < file_name.Length; i++)
|
|
{
|
|
hash += (i & 0xFF) * file_name[i];
|
|
seed ^= hash;
|
|
}
|
|
|
|
seed += arc_hash ^ (7 * ((uint)data.Length & 0xFFFFFF) + (uint)data.Length
|
|
+ hash + (hash ^ (uint)data.Length ^ 0x8F32DCu));
|
|
seed = 9 * (seed & 0xFFFFFF);
|
|
|
|
if (game_key != null)
|
|
seed ^= 0x453A;
|
|
|
|
var mt = new QlieMersenneTwister (seed);
|
|
if (key_file != null)
|
|
mt.XorState (key_file);
|
|
if (game_key != null)
|
|
mt.XorState (game_key);
|
|
|
|
// game code fills dword[41] table, but only the first 16 qwords are used
|
|
ulong[] table = new ulong[16];
|
|
for (int i = 0; i < table.Length; ++i)
|
|
table[i] = mt.Rand64();
|
|
|
|
// compensate for 9 discarded dwords
|
|
for (int i = 0; i < 9; ++i)
|
|
mt.Rand();
|
|
|
|
ulong hash64 = mt.Rand64();
|
|
uint t = mt.Rand() & 0xF;
|
|
unsafe
|
|
{
|
|
fixed (byte* raw_data = &data[offset])
|
|
{
|
|
ulong* data64 = (ulong*)raw_data;
|
|
int qword_length = length / 8;
|
|
for (int i = 0; i < qword_length; ++i)
|
|
{
|
|
hash64 = MMX.PAddD (hash64 ^ table[t], table[t]);
|
|
|
|
ulong d = data64[i] ^ hash64;
|
|
data64[i] = d;
|
|
|
|
hash64 = MMX.PAddB (hash64, d) ^ d;
|
|
hash64 = MMX.PAddW (MMX.PSllD (hash64, 1), d);
|
|
|
|
t++;
|
|
t &= 0xF;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
internal static byte[] Decompress (byte[] input)
|
|
{
|
|
if (LittleEndian.ToUInt32 (input, 0) != 0xFF435031)
|
|
return null;
|
|
|
|
bool is_16bit = 0 != (input[4] & 1);
|
|
|
|
var node = new byte[2,256];
|
|
var child_node = new byte[256];
|
|
|
|
int output_length = LittleEndian.ToInt32 (input, 8);
|
|
var output = new byte[output_length];
|
|
|
|
int src = 12;
|
|
int dst = 0;
|
|
while (src < input.Length)
|
|
{
|
|
int i, k, count, index;
|
|
|
|
for (i = 0; i < 256; i++)
|
|
node[0,i] = (byte)i;
|
|
|
|
for (i = 0; i < 256; )
|
|
{
|
|
count = input[src++];
|
|
|
|
if (count > 127)
|
|
{
|
|
int step = count - 127;
|
|
i += step;
|
|
count = 0;
|
|
}
|
|
|
|
if (i > 255)
|
|
break;
|
|
|
|
count++;
|
|
for (k = 0; k < count; k++)
|
|
{
|
|
node[0,i] = input[src++];
|
|
if (node[0,i] != i)
|
|
node[1,i] = input[src++];
|
|
i++;
|
|
}
|
|
}
|
|
|
|
if (is_16bit)
|
|
{
|
|
count = LittleEndian.ToUInt16 (input, src);
|
|
src += 2;
|
|
}
|
|
else
|
|
{
|
|
count = LittleEndian.ToInt32 (input, src);
|
|
src += 4;
|
|
}
|
|
|
|
k = 0;
|
|
for (;;)
|
|
{
|
|
if (k > 0)
|
|
index = child_node[--k];
|
|
else
|
|
{
|
|
if (0 == count)
|
|
break;
|
|
count--;
|
|
index = input[src++];
|
|
}
|
|
|
|
if (node[0,index] == index)
|
|
output[dst++] = (byte)index;
|
|
else
|
|
{
|
|
child_node[k++] = node[1,index];
|
|
child_node[k++] = node[0,index];
|
|
}
|
|
}
|
|
}
|
|
if (dst != output.Length)
|
|
return null;
|
|
|
|
return output;
|
|
}
|
|
|
|
uint GenerateKey (byte[] key_data)
|
|
{
|
|
ulong hash = 0;
|
|
ulong key = 0;
|
|
unsafe
|
|
{
|
|
fixed (byte* data = key_data)
|
|
{
|
|
ulong* data64 = (ulong*)data;
|
|
for (int i = key_data.Length / 8; i > 0; --i)
|
|
{
|
|
hash = MMX.PAddW (hash, 0x0307030703070307);
|
|
key = MMX.PAddW (key, *data64++ ^ hash);
|
|
}
|
|
}
|
|
}
|
|
return (uint)(key ^ (key >> 32));
|
|
}
|
|
|
|
public override ResourceOptions GetDefaultOptions ()
|
|
{
|
|
return new QlieOptions {
|
|
GameKeyData = GetKeyData (Settings.Default.QLIEScheme)
|
|
};
|
|
}
|
|
|
|
public override object GetAccessWidget ()
|
|
{
|
|
return new GUI.WidgetQLIE();
|
|
}
|
|
|
|
byte[] QueryEncryption ()
|
|
{
|
|
var options = Query<QlieOptions> (arcStrings.ArcEncryptedNotice);
|
|
return options.GameKeyData;
|
|
}
|
|
|
|
static byte[] GetKeyData (string scheme)
|
|
{
|
|
byte[] key;
|
|
if (KnownKeys.TryGetValue (scheme, out key))
|
|
return key;
|
|
return null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Look for 'key.fkey' file within nearby directories specified by KeyLocations.
|
|
/// </summary>
|
|
static byte[] FindKeyFile (ArcView arc_file)
|
|
{
|
|
// QLIE archives with key could be opened at the physical file system level only
|
|
if (VFS.IsVirtual)
|
|
return null;
|
|
var dir_name = Path.GetDirectoryName (arc_file.Name);
|
|
foreach (var path in KeyLocations)
|
|
{
|
|
var name = Path.Combine (dir_name, path, "key.fkey");
|
|
if (File.Exists (name))
|
|
{
|
|
Trace.WriteLine ("reading key from "+name, "[QLIE]");
|
|
return File.ReadAllBytes (name);
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
}
|
|
}
|