diff --git a/ArcFormats/Actgs/ArcDAT.cs b/ArcFormats/Actgs/ArcDAT.cs new file mode 100644 index 00000000..e4face27 --- /dev/null +++ b/ArcFormats/Actgs/ArcDAT.cs @@ -0,0 +1,165 @@ +//! \file ArcDAT.cs +//! \date Tue Nov 03 07:05:36 2015 +//! \brief ACTGS engine resource 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.IO; +using System.Linq; +using GameRes.Utility; +using GameRes.Compression; + +namespace GameRes.Formats.Actgs +{ + [Serializable] + public class ActressScheme : ResourceScheme + { + public byte[][] KnownKeys; + } + + internal class ActressArchive : ArcFile + { + public readonly byte[] Key; + + public ActressArchive (ArcView arc, ArchiveFormat impl, ICollection dir, byte[] key) + : base (arc, impl, dir) + { + Key = key; + } + } + + [Export(typeof(ArchiveFormat))] + public class DatOpener : ArchiveFormat + { + public override string Tag { get { return "DAT/ACTGS"; } } + public override string Description { get { return "ACTGS engine resource archive"; } } + public override uint Signature { get { return 0; } } + public override bool IsHierarchic { get { return false; } } + public override bool CanCreate { get { return false; } } + + public DatOpener () + { + Extensions = new string[] { "dat" }; + } + + public static byte[][] KnownKeys = { }; + + public override ArcFile TryOpen (ArcView file) + { + int count = file.View.ReadInt32 (0); + if (!IsSaneCount (count)) + return null; + if (0 != (file.View.ReadInt32 (4) | file.View.ReadInt32 (8) | file.View.ReadInt32 (12))) + return null; + const int entry_size = 0x20; + var index = new byte[count * entry_size]; + if (index.Length != file.View.Read (0x10, index, 0, (uint)index.Length)) + return null; + + uint first_offset = 0x10u + (uint)index.Length; + uint actual_offset = LittleEndian.ToUInt32 (index, 0); + byte[] key = null; + if (actual_offset != first_offset) + { + key = FindKey (first_offset, actual_offset); + if (null == key) + return null; + Decrypt (index, 0, index.Length, key); + } + + int index_offset = 0; + var dir = new List (count); + for (int i = 0; i < count; ++i) + { + var name = Binary.GetCString (index, index_offset+8, 0x18); + if (0 == name.Length) + return null; + var entry = FormatCatalog.Instance.Create (name); + entry.Offset = LittleEndian.ToUInt32 (index, index_offset); + entry.Size = LittleEndian.ToUInt32 (index, index_offset+4); + if (!entry.CheckPlacement (file.MaxOffset)) + return null; + dir.Add (entry); + index_offset += 0x20; + } + if (null == key) + return new ArcFile (file, this, dir); + else + return new ActressArchive (file, this, dir, key); + } + + public override Stream OpenEntry (ArcFile arc, Entry entry) + { + var actarc = arc as ActressArchive; + if (null == actarc || null == actarc.Key) + return base.OpenEntry (arc, entry); + if (entry.Name.EndsWith (".scr", StringComparison.InvariantCultureIgnoreCase)) + { + if ('X' != arc.File.View.ReadByte (entry.Offset)) + return base.OpenEntry (arc, entry); + var data = new byte[entry.Size]; + arc.File.View.Read (entry.Offset, data, 0, entry.Size); + Decrypt (data, 1, data.Length-1, actarc.Key); + data[0] = (byte)'N'; + return new MemoryStream (data); + } + if (arc.File.View.AsciiEqual (entry.Offset, "PAK ")) + { + uint packed_size = arc.File.View.ReadUInt32 (entry.Offset+4); + var input = arc.File.CreateStream (entry.Offset+12, packed_size); + return new LzssStream (input); + } + uint length = Math.Min (entry.Size, 0x20u); + var header = new byte[length]; + arc.File.View.Read (entry.Offset, header, 0, length); + Decrypt (header, 0, (int)length, actarc.Key); + if (entry.Size <= 0x20) + return new MemoryStream (header); + var rest = arc.File.CreateStream (entry.Offset+0x20, entry.Size-0x20); + return new PrefixStream (header, rest); + } + + byte[] FindKey (uint first_offset, uint actual_offset) + { + var pattern = new byte[4]; + LittleEndian.Pack (first_offset ^ actual_offset, pattern, 0); + return Array.Find (KnownKeys, k => k.Take (4).SequenceEqual (pattern)); + } + + static void Decrypt (byte[] data, int index, int length, byte[] key) + { + for (int i = 0; i < length; ++i) + { + data[index+i] ^= key[i % key.Length]; + } + } + + public override ResourceScheme Scheme + { + get { return new ActressScheme { KnownKeys = KnownKeys }; } + set { KnownKeys = ((ActressScheme)value).KnownKeys; } + } + } +} diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj index a60017ed..550a1e07 100644 --- a/ArcFormats/ArcFormats.csproj +++ b/ArcFormats/ArcFormats.csproj @@ -62,6 +62,7 @@ + diff --git a/supported.html b/supported.html index 0e2c4716..e6d5f5c9 100644 --- a/supported.html +++ b/supported.html @@ -201,7 +201,9 @@ Nikutai Ten'i
*.igfZEUSNo *.dat
*.arc-
M2TYPENoFFA System/G-SYS Dokusen Kango
+Hensai Keikaku
Inran OL Sawatari Tokiko
+Kunoichi Kikyou ~Gensou Kannou Emaki~
Momo x Momi
Onsen Kankou Yukemuri Chijou
@@ -259,6 +261,7 @@ Rikorisu ~Lycoris Radiata~
Aneimo 2 ~Second Stage~
Momichupa Teacher!
Natsu no Owari no Nirvana
+Patissier na Nyanko
Prism Heart
Trouble @ Spiral!
@@ -455,9 +458,13 @@ Moshimo Ashita ga Harenaraba
*.pgaPGAPGAHYes *.chrcharNo -*.gyuGYU\x1aExHIBIT +*.gyuGYU\x1aNoExHIBIT Fuyu no Rondo
+*.dat-NoACTGS +Oreiro Ganbou
+Tadashiki Himehajime
+

1 Non-encrypted only