mirror of
https://github.com/crskycode/GARbro.git
synced 2024-11-24 06:05:35 +08:00
234 lines
9.6 KiB
C#
234 lines
9.6 KiB
C#
//! \file ArcDPK.cs
|
|
//! \date Mon Jun 01 13:29:09 2015
|
|
//! \brief DPK archive
|
|
//
|
|
// 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.Collections.Generic;
|
|
using System.ComponentModel.Composition;
|
|
using System.Globalization;
|
|
using System.IO;
|
|
using GameRes.Formats.Properties;
|
|
using GameRes.Formats.Strings;
|
|
using GameRes.Utility;
|
|
|
|
namespace GameRes.Formats.Dac
|
|
{
|
|
internal class DpkOptions : ResourceOptions
|
|
{
|
|
public uint Key1;
|
|
public uint Key2;
|
|
}
|
|
|
|
public class DpkScheme
|
|
{
|
|
public uint Key1 { get; set; }
|
|
public uint Key2 { get; set; }
|
|
public string Name { get; set; }
|
|
public string OriginalTitle { get; set; }
|
|
}
|
|
|
|
internal class DpkEntry : Entry
|
|
{
|
|
public uint Hash;
|
|
}
|
|
|
|
internal class DpkArchive : ArcFile
|
|
{
|
|
public readonly uint Key1;
|
|
public readonly uint Key2;
|
|
|
|
public DpkArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, DpkOptions opt)
|
|
: base (arc, impl, dir)
|
|
{
|
|
Key1 = opt.Key1;
|
|
Key2 = opt.Key2;
|
|
}
|
|
}
|
|
|
|
[Export(typeof(ArchiveFormat))]
|
|
public class DpkOpener : ArchiveFormat
|
|
{
|
|
public override string Tag { get { return "DPK"; } }
|
|
public override string Description { get { return "DAC engine resource archive"; } }
|
|
public override uint Signature { get { return 0x004b5044; } } // 'DPK'
|
|
public override bool IsHierarchic { get { return true; } }
|
|
public override bool CanCreate { get { return false; } }
|
|
|
|
public static readonly DpkScheme[] KnownSchemes = new DpkScheme[]
|
|
{
|
|
new DpkScheme { Key1 = 0x0FF98, Name = arcStrings.ArcDefault,
|
|
Key2 = 0x43E78A5C },
|
|
new DpkScheme { Key1 = 0x0C3BD, Name = "Inbou no Wakusei",
|
|
Key2 = 0x577D4861, OriginalTitle = "淫暴の惑星～破壊と欲望の衝動～" },
|
|
new DpkScheme { Key1 = 0x04D49, Name = "Ryoshuu",
|
|
Key2 = 0x39712FED, OriginalTitle = "虜囚 -RYOSYU-" },
|
|
new DpkScheme { Key1 = 0x11EAF, Name = "Ryobaku ~Haitoku no Atelier~",
|
|
Key2 = 0xB9976112, OriginalTitle = "虜縛～背徳のアトリエ～" },
|
|
new DpkScheme { Key1 = 0x0527F, Name = "Ryoshuu ~Jogakusei Choukyou~",
|
|
Key2 = 0x339B266F, OriginalTitle = "虜讐～女学生調教～" },
|
|
new DpkScheme { Key1 = 0x0946E, Name = "Shirogane no Cal to Soukuu no Joou",
|
|
Key2 = 0xB1956783, OriginalTitle = "白銀のカルと蒼空の女王" },
|
|
new DpkScheme { Key1 = 0x0BB51, Name = "Shiromiko",
|
|
Key2 = 0x891F52A3, OriginalTitle = "白神子 ～しろみこ～" },
|
|
new DpkScheme { Key1 = 0x09F59, Name = "Shoujotachi no Saezuri",
|
|
Key2 = 0x5DDE9B8D, OriginalTitle = "少女達のさえずり" },
|
|
new DpkScheme { Key1 = 0x0583F, Name = "Yumemiru Tsuki no Lunalutia",
|
|
Key2 = 0xB81031D7, OriginalTitle = "夢みる月のルナルティア" },
|
|
};
|
|
|
|
public override ArcFile TryOpen (ArcView file)
|
|
{
|
|
var header = new byte[8];
|
|
if (8 != file.View.Read (8, header, 0, 8))
|
|
return null;
|
|
byte last = header[7];
|
|
for (int i = 0; i < 8; i++)
|
|
{
|
|
header[i] ^= (byte)(i - 8);
|
|
}
|
|
int data_offset = LittleEndian.ToInt32 (header, 0);
|
|
if (data_offset <= 16 || data_offset >= file.MaxOffset)
|
|
return null;
|
|
int index_length = data_offset - 16;
|
|
var index = new byte[index_length];
|
|
if (index_length != file.View.Read (16, index, 0, (uint)index_length))
|
|
return null;
|
|
DecryptIndex (index, 16, index_length, last);
|
|
int count = LittleEndian.ToInt32 (index, 0);
|
|
if (count <= 0 || count > 0xfffff)
|
|
return null;
|
|
|
|
var options = Query<DpkOptions> (arcStrings.ArcEncryptedNotice);
|
|
var name_bytes = new byte[0x20];
|
|
var dir = new List<Entry> (count);
|
|
int base_offset = 4 + count * 4;
|
|
for (int i = 0; i < count; ++i)
|
|
{
|
|
var index_offset = base_offset + LittleEndian.ToInt32 (index, 4+i*4);
|
|
int name_begin = index_offset+0x0c;
|
|
int name_end = Array.IndexOf (index, (byte)0, name_begin);
|
|
if (-1 == name_end)
|
|
name_end = index.Length;
|
|
if (name_end == name_begin)
|
|
continue;
|
|
if ('z' == index[name_end-1])
|
|
--name_end; // strip 'z' from file extensions
|
|
|
|
int name_length = name_end - name_begin;
|
|
var name = Encodings.cp932.GetString (index, name_begin, name_length);
|
|
if (name_length > name_bytes.Length)
|
|
name_bytes = new byte[name_length];
|
|
// shift-jis characters sequence may contain '\\' that is not a path delimiter
|
|
string name_base = Path.GetFileName (name);
|
|
name_length = Encodings.cp932.GetBytes (name_base, 0, name_base.Length, name_bytes, 0);
|
|
|
|
uint size = LittleEndian.ToUInt32 (index, index_offset + 4);
|
|
var entry = new DpkEntry
|
|
{
|
|
Name = name,
|
|
Type = FormatCatalog.Instance.GetTypeFromName (name),
|
|
Hash = GetNameHash (name_bytes, 0, name_length, options.Key1, options.Key2, size),
|
|
Offset = data_offset + LittleEndian.ToUInt32 (index, index_offset),
|
|
Size = size,
|
|
};
|
|
if (!entry.CheckPlacement (file.MaxOffset))
|
|
return null;
|
|
dir.Add (entry);
|
|
}
|
|
if (0 == dir.Count)
|
|
return null;
|
|
return new DpkArchive (file, this, dir, options);
|
|
}
|
|
|
|
public override Stream OpenEntry (ArcFile arc, Entry entry)
|
|
{
|
|
var parc = arc as DpkArchive;
|
|
var pentry = entry as DpkEntry;
|
|
if (null == parc || null == pentry)
|
|
return arc.File.CreateStream (entry.Offset, entry.Size);
|
|
var data = new byte[entry.Size];
|
|
arc.File.View.Read (entry.Offset, data, 0, entry.Size);
|
|
DecryptEntry (data, parc.Key1, parc.Key2, pentry);
|
|
return new MemoryStream (data);
|
|
}
|
|
|
|
private void DecryptIndex (byte[] buf, int base_offset, int length, byte last)
|
|
{
|
|
for (int i = 0; i < length; i++)
|
|
{
|
|
int key = base_offset + i + last;
|
|
last = buf[i];
|
|
buf[i] ^= (byte)key;
|
|
}
|
|
}
|
|
|
|
private void DecryptEntry (byte[] data, uint key1, uint key2, DpkEntry entry)
|
|
{
|
|
for (uint i = 0; i < data.Length; ++i)
|
|
{
|
|
data[i] ^= (byte)(key1 + (key1 >> 8));
|
|
data[i] -= (byte)entry.Hash;
|
|
key1 += key2;
|
|
}
|
|
}
|
|
|
|
private uint GetNameHash (byte[] name, int begin, int length, uint key1, uint key2, uint entry_size)
|
|
{
|
|
uint hash = 0;
|
|
for (int i = begin+length-1; i >= begin; --i)
|
|
{
|
|
hash += key1 + key2 * (entry_size + name[i]);
|
|
}
|
|
return hash;
|
|
}
|
|
|
|
public override ResourceOptions GetDefaultOptions ()
|
|
{
|
|
return new DpkOptions {
|
|
Key1 = Settings.Default.DPKKey1,
|
|
Key2 = Settings.Default.DPKKey2,
|
|
};
|
|
}
|
|
|
|
public override ResourceOptions GetOptions (object w)
|
|
{
|
|
var widget = w as GUI.WidgetDPK;
|
|
if (null != widget)
|
|
{
|
|
uint result_key;
|
|
if (uint.TryParse (widget.Key1.Text, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out result_key))
|
|
Settings.Default.DPKKey1 = result_key;
|
|
if (uint.TryParse (widget.Key2.Text, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out result_key))
|
|
Settings.Default.DPKKey2 = result_key;
|
|
}
|
|
return this.GetDefaultOptions();
|
|
}
|
|
|
|
public override object GetAccessWidget ()
|
|
{
|
|
return new GUI.WidgetDPK();
|
|
}
|
|
}
|
|
}
|