mirror of
https://github.com/crskycode/GARbro.git
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96 lines
3.9 KiB
C#
96 lines
3.9 KiB
C#
//! \file ArcDAT.cs
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//! \date Thu Nov 10 14:53:03 2016
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//! \brief YaneSDK resource archive.
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//
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// Copyright (C) 2016 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.IO;
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using GameRes.Utility;
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namespace GameRes.Formats.YaneSDK
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{
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internal class YaneEntry : Entry
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{
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public uint EncryptedSize;
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}
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[Export(typeof(ArchiveFormat))]
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public class PakOpener : ArchiveFormat
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{
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public override string Tag { get { return "DAT/YaneSDK"; } }
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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 override ArcFile TryOpen (ArcView file)
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{
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int count = (short)(file.View.ReadUInt16 (0) ^ 0x8080);
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if (!IsSaneCount (count))
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return null;
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using (var input = file.CreateStream())
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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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index.BaseStream.Position = 2;
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int data_offset = 2 + 0x2C * count;
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var name_buf = new byte[0x22];
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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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if (0x22 != index.Read (name_buf, 0, 0x22))
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return null;
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var name = Binary.GetCString (name_buf, 0);
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if (string.IsNullOrWhiteSpace (name))
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return null;
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var entry = FormatCatalog.Instance.Create<YaneEntry> (name);
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entry.EncryptedSize = index.ReadUInt16();
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entry.Size = index.ReadUInt32();
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entry.Offset = index.ReadUInt32();
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if (!entry.CheckPlacement (file.MaxOffset) || entry.Offset < data_offset)
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return null;
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dir.Add (entry);
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}
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return new ArcFile (file, this, dir);
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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 yent = entry as YaneEntry;
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if (null == yent || 0 == yent.EncryptedSize)
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return base.OpenEntry (arc, entry);
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var header = arc.File.View.ReadBytes (yent.Offset, yent.EncryptedSize);
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for (int i = 0; i < header.Length; ++i)
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header[i] ^= 0x80;
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if (yent.EncryptedSize >= yent.Size)
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return new BinMemoryStream (header);
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var rest = arc.File.CreateStream (yent.Offset + yent.EncryptedSize, yent.Size - yent.EncryptedSize);
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return new PrefixStream (header, rest);
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}
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}
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}
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