GARbro-mirror/ArcFormats/YaneSDK/ArcHibiki.cs

205 lines
7.5 KiB
C#

//! \file ArcHibiki.cs
//! \date Fri May 12 19:06:19 2017
//! \brief Hibiki Works resource archive.
//
// Copyright (C) 2017 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.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.Serialization.Formatters.Binary;
using GameRes.Utility;
namespace GameRes.Formats.YaneSDK
{
[Export(typeof(ArchiveFormat))]
public class HDatOpener : ArchiveFormat
{
public override string Tag { get { return "DAT/hibiki"; } }
public override string Description { get { return "YaneSDK engine resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public static readonly string SchemeFileName = "hibiki_works.dat";
public override ArcFile TryOpen (ArcView file)
{
if (!file.Name.HasExtension (".dat"))
return null;
int count = (short)(file.View.ReadUInt16 (0) ^ 0x8080);
if (!IsSaneCount (count))
return null;
var scheme = QueryScheme (file.Name);
if (null == scheme)
return null;
var dat_name = Path.GetFileName (file.Name).ToLowerInvariant();
IList<HibikiTocRecord> toc_table = null;
if (scheme.ArcMap != null && scheme.ArcMap.TryGetValue (dat_name, out toc_table))
{
if (toc_table.Count != count)
toc_table = null;
}
var lst_name = Path.ChangeExtension (file.Name, ".lst");
Stream input;
if (VFS.FileExists (lst_name))
input = VFS.OpenStream (lst_name);
else
input = file.CreateStream();
using (var dec = new XoredStream (input, 0x80))
using (var index = new BinaryReader (dec))
{
const int name_length = 0x100;
index.BaseStream.Position = 2;
Func<int, Entry> read_entry;
if (null == toc_table)
{
var name_buf = new byte[name_length];
read_entry = i => {
if (name_length != index.Read (name_buf, 0, name_length))
return null;
var name = Binary.GetCString (name_buf, 0);
var entry = FormatCatalog.Instance.Create<Entry> (name);
index.ReadUInt16();
entry.Size = index.ReadUInt32();
entry.Offset = index.ReadUInt32();
return entry;
};
}
else
{
read_entry = i => {
index.BaseStream.Seek (name_length + 6, SeekOrigin.Current);
index.ReadUInt32(); // throws in case of EOF
var toc_entry = toc_table[i];
var entry = FormatCatalog.Instance.Create<Entry> (toc_entry.Name);
entry.Offset = toc_entry.Offset;
entry.Size = toc_entry.Size;
return entry;
};
}
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var entry = read_entry (i);
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
}
return new HibikiArchive (file, this, dir, scheme.ContentKey);
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var harc = arc as HibikiArchive;
if (null == harc)
return base.OpenEntry (arc, entry);
var key = harc.Key;
uint encrypted = Math.Min (entry.Size, (uint)key.Length);
var header = arc.File.View.ReadBytes (entry.Offset, encrypted);
for (int i = 0; i < header.Length; ++i)
header[i] ^= key[i];
if (encrypted == entry.Size)
return new BinMemoryStream (header);
var rest = arc.File.CreateStream (entry.Offset + encrypted, entry.Size - encrypted);
return new PrefixStream (header, rest);
}
HibikiDatScheme QueryScheme (string arc_name)
{
if (null == KnownSchemes)
return null;
// XXX add GUI widget to select scheme
return KnownSchemes.Values.FirstOrDefault();
}
static Lazy<HibikiScheme> s_Scheme = new Lazy<HibikiScheme> (DeserializeScheme);
internal IDictionary<string, HibikiDatScheme> KnownSchemes {
get { return s_Scheme.Value.KnownSchemes; }
}
static HibikiScheme DeserializeScheme ()
{
try
{
var dir = FormatCatalog.Instance.DataDirectory;
var scheme_file = Path.Combine (dir, SchemeFileName);
using (var input = File.OpenRead (scheme_file))
{
var bin = new BinaryFormatter();
return (HibikiScheme)bin.Deserialize (input);
}
}
catch (Exception X)
{
Trace.WriteLine (X.Message, "hibiki_works scheme deserialization failed");
return new HibikiScheme();
}
}
}
internal class HibikiArchive : ArcFile
{
public readonly byte[] Key;
public HibikiArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, byte[] key)
: base (arc, impl, dir)
{
Key = key;
}
}
[Serializable]
public class HibikiScheme : ResourceScheme
{
public IDictionary<string, HibikiDatScheme> KnownSchemes;
}
[Serializable]
public class HibikiDatScheme
{
public byte[] ContentKey;
public IDictionary<string, IList<HibikiTocRecord>> ArcMap;
}
[Serializable]
public class HibikiTocRecord
{
public string Name;
public uint Offset;
public uint Size;
public HibikiTocRecord (string name, uint offset, uint size)
{
Name = name;
Offset = offset;
Size = size;
}
}
}