mirror of
https://github.com/crskycode/GARbro.git
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243 lines
9.1 KiB
C#
243 lines
9.1 KiB
C#
//! \file ArcHibiki.cs
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//! \date Fri May 12 19:06:19 2017
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//! \brief Hibiki Works resource archive.
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//
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// Copyright (C) 2017 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Runtime.Serialization.Formatters.Binary;
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using GameRes.Utility;
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namespace GameRes.Formats.YaneSDK
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{
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[Export(typeof(ArchiveFormat))]
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public class HDatOpener : ArchiveFormat
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{
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public override string Tag { get { return "DAT/hibiki"; } }
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public override string Description { get { return "YaneSDK engine resource archive"; } }
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public override uint Signature { get { return 0; } }
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public override bool IsHierarchic { get { return false; } }
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public override bool CanWrite { get { return false; } }
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public static readonly string SchemeFileName = "hibiki_works.dat";
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public override ArcFile TryOpen (ArcView file)
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{
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if (!file.Name.HasExtension (".dat"))
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return null;
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int count = ReadCount (file);
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if (!IsSaneCount (count))
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return null;
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var scheme = QueryScheme (file.Name);
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if (null == scheme)
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return null;
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return TryOpenWithScheme (file, count, scheme);
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}
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int ReadCount (ArcView file)
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{
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return (short)(file.View.ReadUInt16 (0) ^ 0x8080);
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}
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ArcFile TryOpenWithScheme (ArcView file, int count, HibikiDatScheme scheme)
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{
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var dat_name = Path.GetFileName (file.Name).ToLowerInvariant();
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IList<HibikiTocRecord> toc_table = null;
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if (scheme.ArcMap != null && scheme.ArcMap.TryGetValue (dat_name, out toc_table))
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{
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if (toc_table.Count != count)
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toc_table = null;
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}
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using (var input = OpenLstIndex (file, dat_name, scheme))
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using (var dec = new XoredStream (input, 0x80))
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using (var index = new BinaryReader (dec))
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{
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const int name_length = 0x100;
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int data_offset = 2 + (name_length + 10) * count;
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index.BaseStream.Position = 2;
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Func<int, Entry> read_entry;
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if (null == toc_table)
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{
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var name_buf = new byte[name_length];
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read_entry = i => {
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if (name_length != index.Read (name_buf, 0, name_length))
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return null;
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var name = Binary.GetCString (name_buf, 0);
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var entry = FormatCatalog.Instance.Create<Entry> (name);
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index.ReadUInt16();
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entry.Size = index.ReadUInt32();
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entry.Offset = index.ReadUInt32();
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return entry;
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};
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}
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else
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{
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read_entry = i => {
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index.BaseStream.Seek (name_length + 6, SeekOrigin.Current);
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index.ReadUInt32(); // throws in case of EOF
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var toc_entry = toc_table[i];
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var entry = FormatCatalog.Instance.Create<Entry> (toc_entry.Name);
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entry.Offset = toc_entry.Offset;
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entry.Size = toc_entry.Size;
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return entry;
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};
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}
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var dir = new List<Entry> (count);
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for (int i = 0; i < count; ++i)
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{
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var entry = read_entry (i);
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if (null == entry || string.IsNullOrWhiteSpace (entry.Name)
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|| entry.Offset < data_offset || entry.Size > file.MaxOffset)
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return null;
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dir.Add (entry);
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}
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return new HibikiArchive (file, this, dir, scheme.ContentKey);
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}
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}
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Stream OpenLstIndex (ArcView file, string dat_name, HibikiDatScheme scheme)
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{
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var lst_name = Path.ChangeExtension (file.Name, ".lst");
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if (VFS.FileExists (lst_name))
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return VFS.OpenStream (lst_name);
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else if ("init.dat" == dat_name)
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return file.CreateStream();
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// try to open 'init.dat' archive in the same directory
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var dir_name = VFS.GetDirectoryName (file.Name);
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var init_dat = VFS.CombinePath (dir_name, "init.dat");
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if (!VFS.FileExists (init_dat))
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{
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init_dat = VFS.CombinePath (VFS.CombinePath (dir_name, "arc"), "init.dat");
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if (!VFS.FileExists (init_dat))
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return file.CreateStream();
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}
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try
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{
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using (var init = VFS.OpenView (init_dat))
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using (var init_arc = TryOpenWithScheme (init, ReadCount (init), scheme))
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{
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lst_name = Path.GetFileName (lst_name);
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var lst_entry = init_arc.Dir.First (e => e.Name == lst_name);
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return init_arc.OpenEntry (lst_entry);
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}
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}
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catch
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{
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return file.CreateStream();
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}
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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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var harc = arc as HibikiArchive;
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if (null == harc)
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return base.OpenEntry (arc, entry);
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var key = harc.Key;
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uint encrypted = Math.Min (entry.Size, (uint)key.Length);
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var header = arc.File.View.ReadBytes (entry.Offset, encrypted);
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for (int i = 0; i < header.Length; ++i)
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header[i] ^= key[i];
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if (encrypted == entry.Size)
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return new BinMemoryStream (header);
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var rest = arc.File.CreateStream (entry.Offset + encrypted, entry.Size - encrypted);
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return new PrefixStream (header, rest);
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}
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HibikiDatScheme QueryScheme (string arc_name)
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{
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if (null == KnownSchemes)
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return null;
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// XXX add GUI widget to select scheme
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return KnownSchemes.Values.FirstOrDefault();
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}
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static Lazy<HibikiScheme> s_Scheme = new Lazy<HibikiScheme> (DeserializeScheme);
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internal IDictionary<string, HibikiDatScheme> KnownSchemes {
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get { return s_Scheme.Value.KnownSchemes; }
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}
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static HibikiScheme DeserializeScheme ()
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{
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try
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{
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var dir = FormatCatalog.Instance.DataDirectory;
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var scheme_file = Path.Combine (dir, SchemeFileName);
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using (var input = File.OpenRead (scheme_file))
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{
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var bin = new BinaryFormatter();
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return (HibikiScheme)bin.Deserialize (input);
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}
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}
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catch (Exception X)
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{
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Trace.WriteLine (X.Message, "hibiki_works scheme deserialization failed");
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return new HibikiScheme();
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}
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}
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}
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internal class HibikiArchive : ArcFile
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{
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public readonly byte[] Key;
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public HibikiArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, byte[] key)
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: base (arc, impl, dir)
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{
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Key = key;
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}
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}
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[Serializable]
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public class HibikiScheme : ResourceScheme
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{
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public IDictionary<string, HibikiDatScheme> KnownSchemes;
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}
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[Serializable]
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public class HibikiDatScheme
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{
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public byte[] ContentKey;
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public IDictionary<string, IList<HibikiTocRecord>> ArcMap;
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}
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[Serializable]
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public class HibikiTocRecord
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{
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public string Name;
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public uint Offset;
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public uint Size;
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public HibikiTocRecord (string name, uint offset, uint size)
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{
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Name = name;
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Offset = offset;
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Size = size;
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}
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}
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}
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