mirror of
https://github.com/crskycode/GARbro.git
synced 2024-11-24 06:05:35 +08:00
391 lines
14 KiB
C#
391 lines
14 KiB
C#
//! \file ArcINT.cs
|
|
//! \date Fri Jul 11 09:32:36 2014
|
|
//! \brief Frontwing games archive.
|
|
//
|
|
// 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.Linq;
|
|
using System.Text;
|
|
using System.ComponentModel;
|
|
using System.ComponentModel.Composition;
|
|
using System.Collections.Generic;
|
|
using System.Runtime.InteropServices;
|
|
using GameRes.Formats.Strings;
|
|
using GameRes.Formats.Properties;
|
|
using GameRes.Cryptography;
|
|
using GameRes.Utility;
|
|
|
|
namespace GameRes.Formats.CatSystem
|
|
{
|
|
public class FrontwingArchive : ArcFile
|
|
{
|
|
public readonly Blowfish Encryption;
|
|
|
|
public FrontwingArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, Blowfish cipher)
|
|
: base (arc, impl, dir)
|
|
{
|
|
Encryption = cipher;
|
|
}
|
|
}
|
|
|
|
[Serializable]
|
|
public struct KeyData
|
|
{
|
|
public uint Key;
|
|
public string Passphrase;
|
|
|
|
public KeyData (string password)
|
|
{
|
|
Passphrase = password;
|
|
Key = EncodePassPhrase (password);
|
|
}
|
|
|
|
public static uint EncodePassPhrase (string password)
|
|
{
|
|
byte[] pass_bytes = Encodings.cp932.GetBytes (password);
|
|
uint key = 0xffffffff;
|
|
foreach (var c in pass_bytes)
|
|
{
|
|
key = ~Crc32Normal.Table[(key >> 24) ^ c] ^ (key << 8);
|
|
}
|
|
return key;
|
|
}
|
|
}
|
|
|
|
[Serializable]
|
|
public class IntScheme : ResourceScheme
|
|
{
|
|
public Dictionary<string, KeyData> KnownKeys;
|
|
}
|
|
|
|
[Serializable]
|
|
public class IntEncryptionInfo
|
|
{
|
|
public uint? Key { get; set; }
|
|
public string Scheme { get; set; }
|
|
public string Password { get; set; }
|
|
|
|
public uint? GetKey ()
|
|
{
|
|
if (null != Key && Key.HasValue)
|
|
return Key;
|
|
|
|
if (!string.IsNullOrEmpty (Scheme))
|
|
{
|
|
KeyData keydata;
|
|
if (IntOpener.KnownSchemes.TryGetValue (Scheme, out keydata))
|
|
return keydata.Key;
|
|
}
|
|
|
|
if (!string.IsNullOrEmpty (Password))
|
|
return KeyData.EncodePassPhrase (Password);
|
|
|
|
return null;
|
|
}
|
|
}
|
|
|
|
public class IntOptions : ResourceOptions
|
|
{
|
|
public IntEncryptionInfo EncryptionInfo { get; set; }
|
|
}
|
|
|
|
[Export(typeof(ArchiveFormat))]
|
|
public class IntOpener : ArchiveFormat
|
|
{
|
|
public override string Tag { get { return "INT"; } }
|
|
public override string Description { get { return arcStrings.INTDescription; } }
|
|
public override uint Signature { get { return 0x0046494b; } } // 'KIF'
|
|
public override bool IsHierarchic { get { return false; } }
|
|
public override bool CanWrite { get { return true; } }
|
|
|
|
static readonly byte[] NameSizes = { 0x20, 0x40 };
|
|
|
|
public override ArcFile TryOpen (ArcView file)
|
|
{
|
|
int entry_count = file.View.ReadInt32 (4);
|
|
if (!IsSaneCount (entry_count))
|
|
return null;
|
|
if (file.View.AsciiEqual (8, "__key__.dat\x00"))
|
|
{
|
|
uint? key = QueryEncryptionInfo();
|
|
if (null == key)
|
|
throw new UnknownEncryptionScheme();
|
|
return OpenEncrypted (file, entry_count, key.Value);
|
|
}
|
|
|
|
var dir = new List<Entry> (entry_count);
|
|
foreach (var name_length in NameSizes)
|
|
{
|
|
try
|
|
{
|
|
long current_offset = 8;
|
|
for (int i = 0; i < entry_count; ++i)
|
|
{
|
|
string name = file.View.ReadString (current_offset, name_length);
|
|
if (0 == name.Length)
|
|
{
|
|
dir.Clear();
|
|
break;
|
|
}
|
|
var entry = FormatCatalog.Instance.Create<Entry> (name);
|
|
current_offset += name_length;
|
|
entry.Offset = file.View.ReadUInt32 (current_offset);
|
|
entry.Size = file.View.ReadUInt32 (current_offset+4);
|
|
if (entry.Offset <= current_offset || !entry.CheckPlacement (file.MaxOffset))
|
|
{
|
|
dir.Clear();
|
|
break;
|
|
}
|
|
dir.Add (entry);
|
|
current_offset += 8;
|
|
}
|
|
if (dir.Count > 0)
|
|
return new ArcFile (file, this, dir);
|
|
}
|
|
catch { /* ignore parse errors */ }
|
|
}
|
|
return null;
|
|
}
|
|
|
|
private ArcFile OpenEncrypted (ArcView file, int entry_count, uint main_key)
|
|
{
|
|
if (1 == entry_count)
|
|
return null; // empty archive
|
|
long current_offset = 8;
|
|
|
|
uint seed = file.View.ReadUInt32 (current_offset+0x44);
|
|
var twister = new MersenneTwister (seed);
|
|
byte[] blowfish_key = BitConverter.GetBytes (twister.Rand());
|
|
if (!BitConverter.IsLittleEndian)
|
|
Array.Reverse (blowfish_key);
|
|
|
|
var blowfish = new Blowfish (blowfish_key);
|
|
var dir = new List<Entry> (entry_count-1);
|
|
byte[] name_buffer = new byte[0x40];
|
|
for (int i = 1; i < entry_count; ++i)
|
|
{
|
|
current_offset += 0x48;
|
|
file.View.Read (current_offset, name_buffer, 0, 0x40);
|
|
uint offset = file.View.ReadUInt32 (current_offset+0x40) + (uint)i;
|
|
uint size = file.View.ReadUInt32 (current_offset+0x44);
|
|
blowfish.Decipher (ref offset, ref size);
|
|
twister.SRand (main_key + (uint)i);
|
|
uint name_key = twister.Rand();
|
|
string name = DecipherName (name_buffer, name_key);
|
|
|
|
var entry = FormatCatalog.Instance.Create<Entry> (name);
|
|
entry.Offset = offset;
|
|
entry.Size = size;
|
|
if (!entry.CheckPlacement (file.MaxOffset))
|
|
return null;
|
|
dir.Add (entry);
|
|
}
|
|
return new FrontwingArchive (file, this, dir, blowfish);
|
|
}
|
|
|
|
private Stream OpenEncryptedEntry (FrontwingArchive arc, Entry entry)
|
|
{
|
|
byte[] data = arc.File.View.ReadBytes (entry.Offset, entry.Size);
|
|
arc.Encryption.Decipher (data, data.Length/8*8);
|
|
return new BinMemoryStream (data, entry.Name);
|
|
}
|
|
|
|
public override Stream OpenEntry (ArcFile arc, Entry entry)
|
|
{
|
|
if (arc is FrontwingArchive)
|
|
return OpenEncryptedEntry (arc as FrontwingArchive, entry);
|
|
else
|
|
return base.OpenEntry (arc, entry);
|
|
}
|
|
|
|
public string DecipherName (byte[] name, uint key)
|
|
{
|
|
string alphabet = "zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA";
|
|
int k = (byte)((key >> 24) + (key >> 16) + (key >> 8) + key);
|
|
int i;
|
|
for (i = 0; i < name.Length && name[i] != 0; ++i)
|
|
{
|
|
int j = alphabet.IndexOf ((char)name[i]);
|
|
if (j != -1)
|
|
{
|
|
j -= k % 0x34;
|
|
if (j < 0) j += 0x34;
|
|
name[i] = (byte)alphabet[0x33-j];
|
|
}
|
|
++k;
|
|
}
|
|
return Encodings.cp932.GetString (name, 0, i);
|
|
}
|
|
|
|
public static Dictionary<string, KeyData> KnownSchemes = new Dictionary<string, KeyData>();
|
|
|
|
public override ResourceScheme Scheme
|
|
{
|
|
get { return new IntScheme { KnownKeys = KnownSchemes }; }
|
|
set { KnownSchemes = ((IntScheme)value).KnownKeys; }
|
|
}
|
|
|
|
public override ResourceOptions GetDefaultOptions ()
|
|
{
|
|
return new IntOptions {
|
|
EncryptionInfo = Settings.Default.INTEncryption ?? new IntEncryptionInfo(),
|
|
};
|
|
}
|
|
|
|
public override ResourceOptions GetOptions (object w)
|
|
{
|
|
var widget = w as GUI.WidgetINT;
|
|
if (null != widget)
|
|
{
|
|
Settings.Default.INTEncryption = widget.Info;
|
|
return new IntOptions { EncryptionInfo = widget.Info };
|
|
}
|
|
return this.GetDefaultOptions();
|
|
}
|
|
|
|
public override object GetAccessWidget ()
|
|
{
|
|
return new GUI.WidgetINT ();
|
|
}
|
|
|
|
public override object GetCreationWidget ()
|
|
{
|
|
return new GUI.CreateINTWidget();
|
|
}
|
|
|
|
uint? QueryEncryptionInfo ()
|
|
{
|
|
var options = Query<IntOptions> (arcStrings.INTNotice);
|
|
return options.EncryptionInfo.GetKey();
|
|
}
|
|
|
|
public override void Create (Stream output, IEnumerable<Entry> list, ResourceOptions options,
|
|
EntryCallback callback)
|
|
{
|
|
int file_count = list.Count();
|
|
if (null != callback)
|
|
callback (file_count+2, null, null);
|
|
int callback_count = 0;
|
|
using (var writer = new BinaryWriter (output, Encoding.ASCII, true))
|
|
{
|
|
writer.Write (Signature);
|
|
writer.Write (file_count);
|
|
long dir_offset = output.Position;
|
|
|
|
var encoding = Encodings.cp932.WithFatalFallback();
|
|
byte[] name_buf = new byte[0x40];
|
|
int previous_size = 0;
|
|
|
|
if (null != callback)
|
|
callback (callback_count++, null, arcStrings.MsgWritingIndex);
|
|
|
|
// first, write names only
|
|
foreach (var entry in list)
|
|
{
|
|
string name = Path.GetFileName (entry.Name);
|
|
try
|
|
{
|
|
int size = encoding.GetBytes (name, 0, name.Length, name_buf, 0);
|
|
for (int i = size; i < previous_size; ++i)
|
|
name_buf[i] = 0;
|
|
previous_size = size;
|
|
}
|
|
catch (EncoderFallbackException X)
|
|
{
|
|
throw new InvalidFileName (entry.Name, arcStrings.MsgIllegalCharacters, X);
|
|
}
|
|
catch (ArgumentException X)
|
|
{
|
|
throw new InvalidFileName (entry.Name, arcStrings.MsgFileNameTooLong, X);
|
|
}
|
|
writer.Write (name_buf);
|
|
writer.BaseStream.Seek (8, SeekOrigin.Current);
|
|
}
|
|
|
|
// now, write files and remember offset/sizes
|
|
long current_offset = output.Position;
|
|
foreach (var entry in list)
|
|
{
|
|
if (null != callback)
|
|
callback (callback_count++, entry, arcStrings.MsgAddingFile);
|
|
|
|
entry.Offset = current_offset;
|
|
using (var input = File.OpenRead (entry.Name))
|
|
{
|
|
var size = input.Length;
|
|
if (size > uint.MaxValue || current_offset + size > uint.MaxValue)
|
|
throw new FileSizeException();
|
|
current_offset += (uint)size;
|
|
entry.Size = (uint)size;
|
|
input.CopyTo (output);
|
|
}
|
|
}
|
|
|
|
if (null != callback)
|
|
callback (callback_count++, null, arcStrings.MsgUpdatingIndex);
|
|
|
|
// at last, go back to directory and write offset/sizes
|
|
dir_offset += 0x40;
|
|
foreach (var entry in list)
|
|
{
|
|
writer.BaseStream.Position = dir_offset;
|
|
writer.Write ((uint)entry.Offset);
|
|
writer.Write (entry.Size);
|
|
dir_offset += 0x48;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Parse certain executable resources for encryption passphrase.
|
|
/// Returns null if no passphrase found.
|
|
/// </summary>
|
|
public static string GetPassFromExe (string filename)
|
|
{
|
|
using (var exe = new ExeFile.ResourceAccessor (filename))
|
|
{
|
|
var code = exe.GetResource ("DATA", "V_CODE2");
|
|
if (null == code || code.Length < 8)
|
|
return null;
|
|
var key = exe.GetResource ("KEY", "KEY_CODE");
|
|
if (null != key)
|
|
{
|
|
for (int i = 0; i < key.Length; ++i)
|
|
key[i] ^= 0xCD;
|
|
}
|
|
else
|
|
{
|
|
key = Encoding.ASCII.GetBytes ("windmill");
|
|
}
|
|
var blowfish = new Blowfish (key);
|
|
blowfish.Decipher (code, code.Length/8*8);
|
|
int length = Array.IndexOf<byte> (code, 0);
|
|
if (-1 == length)
|
|
length = code.Length;
|
|
return Encodings.cp932.GetString (code, 0, length);
|
|
}
|
|
}
|
|
}
|
|
}
|