From 17037fd7eb24d3e2c968f7154294e526170c4960 Mon Sep 17 00:00:00 2001 From: morkt Date: Sat, 25 Apr 2015 02:04:43 +0400 Subject: [PATCH] Entis GLS archives preliminary implementation (no encryption yet). --- ArcFormats/ArcNOA.cs | 159 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 159 insertions(+) create mode 100644 ArcFormats/ArcNOA.cs diff --git a/ArcFormats/ArcNOA.cs b/ArcFormats/ArcNOA.cs new file mode 100644 index 00000000..cc83ff03 --- /dev/null +++ b/ArcFormats/ArcNOA.cs @@ -0,0 +1,159 @@ +//! \file ArcNOA.cs +//! \date Thu Apr 23 15:57:17 2015 +//! \brief Entis GLS engine 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 GameRes.Utility; + +namespace GameRes.Formats.Entis +{ + internal class NoaEntry : Entry + { + public byte[] Extra; + public uint Encryption; + public uint Attr; + } + + [Export(typeof(ArchiveFormat))] + public class NoaOpener : ArchiveFormat + { + public override string Tag { get { return "NOA"; } } + public override string Description { get { return "Entis GLS engine resource archive"; } } + public override uint Signature { get { return 0x69746e45; } } // 'Enti' + public override bool IsHierarchic { get { return false; } } + public override bool CanCreate { get { return false; } } + + public override ArcFile TryOpen (ArcView file) + { + if (!file.View.AsciiEqual (0, "Entis\x1a")) + return null; + uint id = file.View.ReadUInt32 (8); + if (0x02000400 != id) + return null; + var reader = new IndexReader (file); + if (!reader.ParseDirEntry (0x40, "")) + return null; + return new ArcFile (file, this, reader.Dir); + } + + public override Stream OpenEntry (ArcFile arc, Entry entry) + { + var nent = entry as NoaEntry; + if (null == nent || !arc.File.View.AsciiEqual (entry.Offset, "filedata")) + return arc.File.CreateStream (entry.Offset, entry.Size); + ulong size = arc.File.View.ReadUInt64 (entry.Offset+8); + if (size > uint.MaxValue) + throw new FileSizeException(); + if (0 == nent.Encryption) + return arc.File.CreateStream (entry.Offset+0x10, (uint)size); + if (0x40000000 != nent.Encryption) + { + System.Diagnostics.Trace.WriteLine (string.Format ("{0}: unknown encryption scheme 0x{1:x8}", + nent.Name, nent.Encryption)); + return arc.File.CreateStream (entry.Offset+0x10, (uint)size); + } + return arc.File.CreateStream (entry.Offset+0x10, (uint)size); + } + + internal class IndexReader + { + ArcView m_file; + List m_dir = new List(); + + const char PathSeparatorChar = '/'; + + public List Dir { get { return m_dir; } } + + public IndexReader (ArcView file) + { + m_file = file; + } + + public bool ParseDirEntry (long dir_offset, string cur_dir) + { + if (!m_file.View.AsciiEqual (dir_offset, "DirEntry")) + return false; + long size = m_file.View.ReadInt64 (dir_offset+8); + if (size <= 0 || size > int.MaxValue) + return false; + if ((uint)size > m_file.View.Reserve (dir_offset+8, (uint)size)) + return false; + long base_offset = dir_offset; + dir_offset += 0x10; + int count = m_file.View.ReadInt32 (dir_offset); + dir_offset += 4; + if (m_dir.Capacity < m_dir.Count+count) + m_dir.Capacity = m_dir.Count+count; + for (int i = 0; i < count; ++i) + { + var entry = new NoaEntry(); + entry.Size = m_file.View.ReadUInt32 (dir_offset); + dir_offset += 8; + entry.Attr = m_file.View.ReadUInt32 (dir_offset); + dir_offset += 4; + entry.Encryption = m_file.View.ReadUInt32 (dir_offset); + dir_offset += 4; + entry.Offset = base_offset + m_file.View.ReadInt64 (dir_offset); + if (!entry.CheckPlacement (m_file.MaxOffset)) + return false; + dir_offset += 0x10; + uint extra_length = m_file.View.ReadUInt32 (dir_offset); + dir_offset += 4; + if (extra_length > 0 && 0 == (entry.Attr & 0x70)) + { + entry.Extra = new byte[extra_length]; + if (entry.Extra.Length != m_file.View.Read (dir_offset, entry.Extra, 0, extra_length)) + return false; + } + dir_offset += extra_length; + uint name_length = m_file.View.ReadUInt32 (dir_offset); + dir_offset += 4; + string name = m_file.View.ReadString (dir_offset, name_length); + dir_offset += name_length; + if (string.IsNullOrEmpty (cur_dir)) + entry.Name = name; + else + entry.Name = cur_dir + PathSeparatorChar + name; + if (0x10 == entry.Attr) + { + if (!ParseDirEntry (entry.Offset+0x10, entry.Name)) + return false; + } + else if (0x20 == entry.Attr || 0x40 == entry.Attr) + { + break; + } + else + { + m_dir.Add (entry); + } + } + return true; + } + } + } +}