mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-24 20:04:13 +08:00
214 lines
8.3 KiB
C#
214 lines
8.3 KiB
C#
//! \file ArcCherry.cs
|
|
//! \date Wed Jun 24 21:22:56 2015
|
|
//! \brief Cherry Soft 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.Collections.Generic;
|
|
using System.ComponentModel.Composition;
|
|
using System.IO;
|
|
using System.Linq;
|
|
using GameRes.Utility;
|
|
using GameRes.Compression;
|
|
|
|
namespace GameRes.Formats.Cherry
|
|
{
|
|
[Export(typeof(ArchiveFormat))]
|
|
public class PakOpener : ArchiveFormat
|
|
{
|
|
public override string Tag { get { return "PAK/CHERRY"; } }
|
|
public override string Description { get { return "Cherry Soft PACK resource archive"; } }
|
|
public override uint Signature { get { return 0; } }
|
|
public override bool IsHierarchic { get { return false; } }
|
|
public override bool CanCreate { get { return false; } }
|
|
|
|
public PakOpener ()
|
|
{
|
|
Extensions = new string[] { "pak" };
|
|
}
|
|
|
|
public override ArcFile TryOpen (ArcView file)
|
|
{
|
|
int count = file.View.ReadInt32 (0);
|
|
if (!IsSaneCount (count))
|
|
return null;
|
|
long base_offset = file.View.ReadUInt32 (4);
|
|
if (base_offset >= file.MaxOffset || base_offset != (8 + count*0x18))
|
|
return null;
|
|
var dir = ReadIndex (file, 8, count, base_offset, file);
|
|
return dir != null ? new ArcFile (file, this, dir) : null;
|
|
}
|
|
|
|
protected List<Entry> ReadIndex (ArcView index, int index_offset, int count, long base_offset, ArcView file)
|
|
{
|
|
uint index_size = (uint)count * 0x18u;
|
|
if (index_size > index.View.Reserve (index_offset, index_size))
|
|
return null;
|
|
string arc_name = Path.GetFileNameWithoutExtension (file.Name);
|
|
bool is_grp = arc_name.EndsWith ("GRP", StringComparison.InvariantCultureIgnoreCase);
|
|
var dir = new List<Entry> (count);
|
|
for (int i = 0; i < count; ++i)
|
|
{
|
|
string name = index.View.ReadString (index_offset, 0x10);
|
|
if (0 == name.Length)
|
|
return null;
|
|
var offset = base_offset + index.View.ReadUInt32 (index_offset+0x10);
|
|
Entry entry;
|
|
if (is_grp)
|
|
{
|
|
entry = new Entry {
|
|
Name = Path.ChangeExtension (name, "grp"),
|
|
Type = "image",
|
|
Offset = offset
|
|
};
|
|
}
|
|
else
|
|
{
|
|
entry = AutoEntry.Create (file, offset, name);
|
|
}
|
|
entry.Size = index.View.ReadUInt32 (index_offset+0x14);
|
|
if (!entry.CheckPlacement (file.MaxOffset))
|
|
return null;
|
|
dir.Add (entry);
|
|
index_offset += 0x18;
|
|
}
|
|
return dir;
|
|
}
|
|
|
|
public override Stream OpenEntry (ArcFile arc, Entry entry)
|
|
{
|
|
if (!arc.File.View.AsciiEqual (entry.Offset, "GsWIN SC File"))
|
|
return arc.File.CreateStream (entry.Offset, entry.Size);
|
|
var text_offset = 0x68 + arc.File.View.ReadUInt32 (entry.Offset+0x5C);
|
|
var text_size = arc.File.View.ReadUInt32 (entry.Offset+0x60);
|
|
if (0 == text_size || text_offset+text_size > entry.Size)
|
|
return arc.File.CreateStream (entry.Offset, entry.Size);
|
|
|
|
var data = new byte[entry.Size];
|
|
arc.File.View.Read (entry.Offset, data, 0, entry.Size);
|
|
for (uint i = 0; i < text_size; ++i)
|
|
{
|
|
data[text_offset+i] ^= (byte)i;
|
|
}
|
|
return new MemoryStream (data);
|
|
}
|
|
}
|
|
|
|
internal class CherryPak : ArcFile
|
|
{
|
|
public CherryPak (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir)
|
|
: base (arc, impl, dir)
|
|
{
|
|
}
|
|
}
|
|
|
|
[Export(typeof(ArchiveFormat))]
|
|
public class Pak2Opener : PakOpener
|
|
{
|
|
public override string Tag { get { return "PAK/CHERRY2"; } }
|
|
public override string Description { get { return "Cherry Soft PACK resource archive v2"; } }
|
|
public override uint Signature { get { return 0x52454843; } } // 'CHER'
|
|
public override bool IsHierarchic { get { return false; } }
|
|
public override bool CanCreate { get { return false; } }
|
|
|
|
public Pak2Opener ()
|
|
{
|
|
Extensions = new string[] { "pak" };
|
|
}
|
|
|
|
public override ArcFile TryOpen (ArcView file)
|
|
{
|
|
if (!file.View.AsciiEqual (0, "CHERRY PACK 2.0\0"))
|
|
return null;
|
|
bool is_compressed = file.View.ReadInt32 (0x10) != 0;
|
|
int count = file.View.ReadInt32 (0x14);
|
|
long base_offset = file.View.ReadUInt32 (0x18);
|
|
bool is_encrypted = false;
|
|
while (!IsSaneCount (count) || base_offset >= file.MaxOffset || (!is_compressed && base_offset != (0x1C + count*0x18)))
|
|
{
|
|
if (is_encrypted)
|
|
return null;
|
|
// these keys seem to be constant across different games
|
|
count ^= unchecked((int)0xBC138744);
|
|
base_offset ^= 0x64E0BA23;
|
|
is_encrypted = true;
|
|
}
|
|
List<Entry> dir;
|
|
if (is_compressed)
|
|
{
|
|
var packed = file.View.ReadBytes (0x1C, (uint)base_offset-0x1C);
|
|
Decrypt (packed, 0, packed.Length);
|
|
using (var mem = new MemoryStream (packed))
|
|
using (var lzss = new LzssStream (mem))
|
|
using (var index = new ArcView (lzss, file.Name, (uint)count * 0x18))
|
|
dir = ReadIndex (index, 0, count, base_offset, file);
|
|
}
|
|
else
|
|
{
|
|
dir = ReadIndex (file, 0x1C, count, base_offset, file);
|
|
}
|
|
if (null == dir)
|
|
return null;
|
|
if (is_encrypted && is_compressed)
|
|
return new CherryPak (file, this, dir);
|
|
else
|
|
return new ArcFile (file, this, dir);
|
|
}
|
|
|
|
void Decrypt (byte[] data, int index, int length) // Exile ~Blood Royal 2~
|
|
{
|
|
for (int i = 0; i+1 < length; i += 2)
|
|
{
|
|
byte lo = (byte)(data[index+i ] ^ 0x33);
|
|
byte hi = (byte)(data[index+i+1] ^ 0xCC);
|
|
data[index+i ] = hi;
|
|
data[index+i+1] = lo;
|
|
}
|
|
}
|
|
|
|
public override Stream OpenEntry (ArcFile arc, Entry entry)
|
|
{
|
|
if (!(arc is CherryPak) || entry.Size < 0x18)
|
|
return base.OpenEntry (arc, entry);
|
|
var data = arc.File.View.ReadBytes (entry.Offset, entry.Size);
|
|
if (data.Length >= 0x18)
|
|
{
|
|
uint encrypted_size;
|
|
unsafe
|
|
{
|
|
fixed (byte* raw = data)
|
|
{
|
|
uint* raw32 = (uint*)raw;
|
|
raw32[0] ^= 0xA53CC35Au;
|
|
raw32[1] ^= 0x35421005u;
|
|
raw32[4] ^= 0xCF42355Du;
|
|
encrypted_size = raw32[5];
|
|
}
|
|
}
|
|
Decrypt (data, 0x18, (int)(data.Length - 0x18));
|
|
}
|
|
return new MemoryStream (data);
|
|
}
|
|
}
|
|
}
|