//! \file ArcPK.cs //! \date Wed Jul 15 00:19:23 2015 //! \brief U-Me soft resource archives. // // 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.UMeSoft { [Export(typeof(ArchiveFormat))] public class PkOpener : ArchiveFormat { public override string Tag { get { return "PK"; } } public override string Description { get { return "U-Me Soft resources archive"; } } public override uint Signature { get { return 0; } } public override bool IsHierarchic { get { return false; } } public override bool CanWrite { get { return false; } } public PkOpener () { Extensions = new string[] { "pk", "gpk", "tpk", "wpk", "mpk", "pk0", "pka", "pkb", "pkc", "pkd", "pke", "pkf" }; } public override ArcFile TryOpen (ArcView file) { long index_end = file.MaxOffset - 4; uint index_size = file.View.ReadUInt32 (index_end); if (0 == index_size || index_size >= index_end) return null; long index_offset = index_end - index_size; if (index_size > file.View.Reserve (index_offset, index_size)) return null; var dir = new List<Entry>(); while (index_offset < index_end) { uint name_len = file.View.ReadByte (index_offset++); if (0 == name_len) break; if (name_len+14 > index_end-index_offset) return null; string name = file.View.ReadString (index_offset, name_len); if (name.Length < (int)name_len / 2 + 1) return null; index_offset += name_len+6; var entry = FormatCatalog.Instance.Create<Entry> (name); entry.Size = file.View.ReadUInt32 (index_offset); entry.Offset = file.View.ReadUInt32 (index_offset+4); if (!entry.CheckPlacement (index_offset)) return null; dir.Add (entry); index_offset += 8; } if (0 == dir.Count) return null; return new ArcFile (file, this, dir); } public override Stream OpenEntry (ArcFile arc, Entry entry) { if (!entry.Name.HasAnyOfExtensions ("scr", "tbl")) return base.OpenEntry (arc, entry); int output_size = arc.File.View.ReadInt32 (entry.Offset); if (output_size <= 0) return base.OpenEntry (arc, entry); using (var input = arc.File.CreateStream (entry.Offset+4, entry.Size-4)) { var data = LzUnpack (input, output_size); for (int i = 0; i < data.Length; ++i) data[i] ^= 0x42; return new BinMemoryStream (data, entry.Name); } } byte[] LzUnpack (Stream input, int output_size) { var output = new byte[output_size]; int ctl = 0; int mask = 0; int dst = 0; while (dst < output_size) { mask >>= 1; if (0 == mask) { ctl = input.ReadByte(); if (-1 == ctl) break; mask = 0x80; } if (0 == (ctl & mask)) { output[dst++] = (byte)input.ReadByte(); } else { int lo = input.ReadByte(); int hi = input.ReadByte(); if (-1 == lo || -1 == hi) break; int offset = hi << 4 | lo >> 4; if (0 == offset) break; int count = (lo & 0xF) + 3; Binary.CopyOverlapped (output, dst - offset, dst, count); dst += count; } } return output; } } }