GARbro-mirror/ArcFormats/ArcYPF.cs

368 lines
15 KiB
C#

//! \file ArcYPF.cs
//! \date Mon Jul 14 14:40:06 2014
//! \brief YPF resource format implementation.
//
// Copyright (C) 2014 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.IO;
using System.Text;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using ZLibNet;
using GameRes.Formats.Strings;
using GameRes.Formats.Properties;
using GameRes.Utility;
namespace GameRes.Formats.YuRis
{
public class YpfOptions : ResourceOptions
{
public uint Key { get; set; }
public uint Version { get; set; }
}
[Export(typeof(ArchiveFormat))]
public class YpfOpener : ArchiveFormat
{
public override string Tag { get { return "YPF"; } }
public override string Description { get { return arcStrings.YPFDescription; } }
public override uint Signature { get { return 0x00465059; } }
public override bool IsHierarchic { get { return true; } }
public override bool CanCreate { get { return true; } }
private const uint DefaultKey = 0xffffffff;
public override ArcFile TryOpen (ArcView file)
{
uint version = file.View.ReadUInt32 (4);
uint count = file.View.ReadUInt32 (8);
uint dir_size = file.View.ReadUInt32 (12);
if (dir_size < count * 0x17 || count > 0xfffff)
return null;
if (dir_size > file.View.Reserve (0x20, dir_size))
return null;
var parser = new Parser (file, version, count, dir_size);
uint key = QueryEncryptionKey();
var dir = parser.ScanDir (key);
if (0 == dir.Count)
return null;
return new ArcFile (file, this, dir);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var input = arc.File.CreateStream (entry.Offset, entry.Size);
var packed_entry = entry as PackedEntry;
if (null == packed_entry || !packed_entry.IsPacked)
return input;
else
return new ZLibStream (input, CompressionMode.Decompress);
}
public override ResourceOptions GetDefaultOptions ()
{
return new YpfOptions
{
Key = Settings.Default.YPFKey,
Version = Settings.Default.YPFVersion,
};
}
public override object GetAccessWidget ()
{
return new GUI.WidgetYPF();
}
public override object GetCreationWidget ()
{
return new GUI.CreateYPFWidget();
}
uint QueryEncryptionKey ()
{
var options = Query<YpfOptions> (arcStrings.YPFNotice);
return options.Key;
}
internal class YpfEntry : PackedEntry
{
public byte[] IndexName;
public uint NameHash;
public byte FileType;
public uint CheckSum;
}
delegate uint ChecksumFunc (byte[] data);
public override void Create (Stream output, IEnumerable<Entry> list, ResourceOptions options,
EntryCallback callback)
{
var ypf_options = GetOptions<YpfOptions> (options);
if (null == ypf_options)
throw new ArgumentException ("Invalid archive creation options", "options");
if (ypf_options.Key > 0xff)
throw new InvalidEncryptionScheme (arcStrings.MsgCreationKeyRequired);
if (0 == ypf_options.Version)
throw new InvalidFormatException (arcStrings.MsgInvalidVersion);
int callback_count = 0;
var encoding = Encodings.cp932.WithFatalFallback();
ChecksumFunc Checksum = data => Crc32.Compute (data, 0, data.Length);
uint data_offset = 0x20;
var file_table = new List<YpfEntry>();
foreach (var entry in list)
{
try
{
string file_name = entry.Name;
byte[] name_buf = encoding.GetBytes (file_name);
if (name_buf.Length > 0xff)
throw new InvalidFileName (entry.Name, arcStrings.MsgFileNameTooLong);
uint hash = Checksum (name_buf);
byte file_type = GetFileType (ypf_options.Version, file_name);
for (int i = 0; i < name_buf.Length; ++i)
name_buf[i] = (byte)(name_buf[i] ^ ypf_options.Key);
file_table.Add (new YpfEntry {
Name = file_name,
IndexName = name_buf,
NameHash = hash,
FileType = file_type,
IsPacked = 0 == file_type,
});
data_offset += (uint)(0x17 + name_buf.Length);
}
catch (EncoderFallbackException X)
{
throw new InvalidFileName (entry.Name, arcStrings.MsgIllegalCharacters, X);
}
}
file_table.Sort ((a, b) => a.NameHash.CompareTo (b.NameHash));
output.Position = data_offset;
uint current_offset = data_offset;
foreach (var entry in file_table)
{
if (null != callback)
callback (callback_count++, entry, arcStrings.MsgAddingFile);
entry.Offset = current_offset;
using (var input = File.OpenRead (entry.Name))
{
var file_size = input.Length;
if (file_size > uint.MaxValue || current_offset + file_size > uint.MaxValue)
throw new FileSizeException();
entry.UnpackedSize = (uint)file_size;
using (var checked_stream = new CheckedStream (output, new Adler32()))
{
if (entry.IsPacked)
{
using (var zstream = new ZLibStream (checked_stream, CompressionMode.Compress,
CompressionLevel.Level9, true))
{
input.CopyTo (zstream);
zstream.Flush();
entry.Size = (uint)zstream.TotalOut;
}
}
else
{
input.CopyTo (checked_stream);
entry.Size = entry.UnpackedSize;
}
checked_stream.Flush();
entry.CheckSum = checked_stream.CheckSumValue;
current_offset += entry.Size;
}
}
}
if (null != callback)
callback (callback_count++, null, arcStrings.MsgWritingIndex);
output.Position = 0;
using (var writer = new BinaryWriter (output, encoding, true))
{
writer.Write (Signature);
writer.Write (ypf_options.Version);
writer.Write (file_table.Count);
writer.Write (data_offset);
writer.BaseStream.Seek (0x20, SeekOrigin.Begin);
foreach (var entry in file_table)
{
writer.Write (entry.NameHash);
byte name_len = (byte)~Parser.Decrypt (ypf_options.Version, (byte)entry.IndexName.Length);
writer.Write (name_len);
writer.Write (entry.IndexName);
writer.Write (entry.FileType);
writer.Write ((byte)(entry.IsPacked ? 1 : 0));
writer.Write (entry.UnpackedSize);
writer.Write (entry.Size);
writer.Write ((uint)entry.Offset);
writer.Write (entry.CheckSum);
}
}
}
static byte GetFileType (uint version, string name)
{
// 0x0F7: 0-ybn, 1-bmp, 2-png, 3-jpg, 4-gif, 5-avi, 6-wav, 7-ogg, 8-psd
// 0x122, 0x12C, 0x196: 0-ybn, 1-bmp, 2-png, 3-jpg, 4-gif, 5-wav, 6-ogg, 7-psd
string ext = Path.GetExtension (name).TrimStart ('.').ToLower();
if ("ybn" == ext) return 0;
if ("bmp" == ext) return 1;
if ("png" == ext) return 2;
if ("jpg" == ext || "jpeg" == ext) return 3;
if ("gif" == ext) return 4;
if ("avi" == ext && 0xf7 == version) return 5;
byte type = 0;
if ("wav" == ext) type = 5;
else if ("ogg" == ext) type = 6;
else if ("psd" == ext) type = 7;
if (0xf7 == version && 0 != type)
++type;
return type;
}
private class Parser
{
ArcView m_file;
uint m_version;
uint m_count;
uint m_dir_size;
public Parser (ArcView file, uint version, uint count, uint dir_size)
{
m_file = file;
m_count = count;
m_dir_size = dir_size;
m_version = version;
}
// 4-name_checksum, 1-name_count, *-name, 1-file_type
// 1-pack_flag, 4-size, 4-packed_size, 4-offset, 4-packed_adler32
public List<Entry> ScanDir (uint key)
{
uint dir_offset = 0x20;
uint dir_remaining = m_dir_size;
var dir = new List<Entry> ((int)m_count);
for (uint num = 0; num < m_count; ++num)
{
if (dir_remaining < 0x17)
break;
dir_remaining -= 0x17;
uint name_size = Decrypt (m_version, (byte)(m_file.View.ReadByte (dir_offset+4) ^ 0xff));
if (name_size > dir_remaining)
break;
dir_remaining -= name_size;
dir_offset += 5;
if (0 == name_size)
break;
if (0xffffffff == key)
{
if (name_size < 4)
break;
// assume filename contains '.' and 3-characters extension.
key = (uint)(m_file.View.ReadByte (dir_offset+name_size-4) ^ 0x2e);
}
byte[] raw_name = new byte[name_size];
for (int i = 0; i < name_size; ++i)
{
raw_name[i] = (byte)(m_file.View.ReadByte (dir_offset) ^ key);
++dir_offset;
}
string name = Encodings.cp932.GetString (raw_name);
// 0x0F7: 0-ybn, 1-bmp, 2-png, 3-jpg, 4-gif, 5-avi, 6-wav, 7-ogg, 8-psd
// 0x122, 0x12C, 0x196: 0-ybn, 1-bmp, 2-png, 3-jpg, 4-gif, 5-wav, 6-ogg, 7-psd
int type_id = m_file.View.ReadByte (dir_offset);
string type = "";
switch (type_id)
{
case 0:
type = "script";
break;
case 1: case 2: case 3: case 4:
type = "image";
break;
case 5:
type = 0xf7 == m_version ? "video" : "audio";
break;
case 6:
case 7:
type = "audio";
break;
}
var entry = new PackedEntry { Name = name, Type = type };
entry.IsPacked = 1 == m_file.View.ReadByte (dir_offset+1);
entry.UnpackedSize = m_file.View.ReadUInt32 (dir_offset+2);
entry.Size = m_file.View.ReadUInt32 (dir_offset+6);
entry.Offset = m_file.View.ReadUInt32 (dir_offset+10);
if (entry.CheckPlacement (m_file.MaxOffset))
dir.Add (entry);
dir_offset += 0x12;
}
return dir;
}
static readonly byte[] s_crypt_table = {
0x03,0x48,0x06,0x35, // 0x122, 0x196
0x0C,0x10,0x11,0x19,0x1C,0x1E, // 0x0F7
0x09,0x0B,0x0D,0x13,0x15,0x1B, // 0x12C
0x20,0x23,0x26,0x29,
0x2C,0x2F,0x2E,0x32,
};
// 0xFF 0x0F7 "Four-Leaf" adler32
// 0x34 0x122 "Neko Koi!" crc32
// 0x28 0x12C "Suzukaze no Melt" (no recovery - 00 00 00 00)
// 0xFF 0x196 "Mamono Musume-tachi to no Rakuen ~Slime & Scylla~"
static public byte Decrypt (uint version, byte value)
{
int pos = 4;
if (version >= 0x100)
{
if (version >= 0x12c && version < 0x196)
pos = 10;
else
pos = 0;
}
pos = Array.IndexOf (s_crypt_table, value, pos);
if (-1 == pos)
return value;
if (0 != (pos & 1))
return s_crypt_table[pos-1];
else
return s_crypt_table[pos+1];
}
}
}
}