mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-28 05:44:12 +08:00
437 lines
16 KiB
C#
437 lines
16 KiB
C#
//! PAZ archive implementation.
|
|
//
|
|
// Copyright (C) 2016 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.Compression;
|
|
using GameRes.Cryptography;
|
|
using GameRes.Formats.Strings;
|
|
using GameRes.Utility;
|
|
|
|
namespace GameRes.Formats.Musica
|
|
{
|
|
internal class PazEntry : PackedEntry
|
|
{
|
|
public uint AlignedSize;
|
|
public byte[] Key;
|
|
}
|
|
|
|
internal abstract class PazArchiveBase : ArcFile
|
|
{
|
|
public readonly int Version;
|
|
public readonly byte XorKey;
|
|
|
|
public PazArchiveBase (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, int version, byte key, IReadOnlyList<ArcView> parts = null)
|
|
: base (arc, impl, dir)
|
|
{
|
|
Version = version;
|
|
XorKey = key;
|
|
m_parts = parts;
|
|
}
|
|
|
|
IReadOnlyList<ArcView> m_parts;
|
|
|
|
public IEnumerable<ArcView> Parts
|
|
{
|
|
get
|
|
{
|
|
yield return File;
|
|
if (m_parts != null)
|
|
foreach (var part in m_parts)
|
|
yield return part;
|
|
}
|
|
}
|
|
|
|
internal abstract Stream DecryptEntry (Stream input, PazEntry entry);
|
|
|
|
bool _paz_disposed = false;
|
|
protected override void Dispose (bool disposing)
|
|
{
|
|
if (_paz_disposed)
|
|
return;
|
|
|
|
if (disposing && m_parts != null)
|
|
{
|
|
foreach (var arc in m_parts)
|
|
arc.Dispose();
|
|
}
|
|
_paz_disposed = true;
|
|
base.Dispose (disposing);
|
|
}
|
|
}
|
|
|
|
internal class PazArchive : PazArchiveBase
|
|
{
|
|
public readonly Blowfish Encryption;
|
|
|
|
public PazArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, int version, byte key, byte[] data_key, IReadOnlyList<ArcView> parts = null)
|
|
: base (arc, impl, dir, version, key, parts)
|
|
{
|
|
Encryption = new Blowfish (data_key);
|
|
}
|
|
|
|
internal override Stream DecryptEntry (Stream input, PazEntry entry)
|
|
{
|
|
input = new InputCryptoStream (input, Encryption.CreateDecryptor());
|
|
var key = entry.Key;
|
|
if (null == key)
|
|
return input;
|
|
var rc4 = new Rc4Transform (key);
|
|
if (Version >= 2)
|
|
{
|
|
uint crc = Crc32.Compute (key, 0, key.Length);
|
|
int skip_rounds = (int)(crc >> 12) & 0xFF;
|
|
for (int i = 0; i < skip_rounds; ++i)
|
|
{
|
|
rc4.NextByte();
|
|
}
|
|
}
|
|
return new InputCryptoStream (input, rc4);
|
|
}
|
|
}
|
|
|
|
internal class MovPazArchive : PazArchiveBase
|
|
{
|
|
public readonly byte[] MovKey;
|
|
|
|
public MovPazArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, int version, byte key, byte[] mov_key, IReadOnlyList<ArcView> parts = null)
|
|
: base (arc, impl, dir, version, key, parts)
|
|
{
|
|
MovKey = mov_key;
|
|
}
|
|
|
|
internal override Stream DecryptEntry (Stream input, PazEntry entry)
|
|
{
|
|
if (Version < 1)
|
|
{
|
|
using (input)
|
|
{
|
|
var data = new byte[entry.AlignedSize];
|
|
input.Read (data, 0, data.Length);
|
|
for (int i = 0; i < data.Length; ++i)
|
|
data[i] = MovKey[data[i]];
|
|
return new BinMemoryStream (data, entry.Name);
|
|
}
|
|
}
|
|
var key = new byte[0x100];
|
|
for (int i = 0; i < 0x100; ++i)
|
|
key[i] = (byte)(MovKey[i] ^ entry.Key[i % entry.Key.Length]);
|
|
|
|
var rc4 = new Rc4Transform (key);
|
|
var block = rc4.GenerateBlock ((int)Math.Min (0x10000, input.Length));
|
|
return new ByteStringEncryptedStream (input, block);
|
|
}
|
|
}
|
|
|
|
[Export(typeof(ArchiveFormat))]
|
|
public class PazOpener : ArchiveFormat
|
|
{
|
|
public override string Tag { get { return "PAZ"; } }
|
|
public override string Description { get { return "Musica engine resource archive"; } }
|
|
public override uint Signature { get { return 0; } }
|
|
public override bool IsHierarchic { get { return false; } }
|
|
public override bool CanWrite { get { return false; } }
|
|
|
|
public PazOpener ()
|
|
{
|
|
Signatures = new uint[] { 0x858F8493, 0x8F889395, 0x6E656465, 0x848F8486, 0 };
|
|
}
|
|
|
|
static readonly ISet<string> AudioPazNames = new HashSet<string> {
|
|
"bgm", "se", "voice", "pmbgm", "pmse", "pmvoice"
|
|
};
|
|
static readonly ISet<string> VideoPazNames = new HashSet<string> { "mov" };
|
|
|
|
public override ArcFile TryOpen (ArcView file)
|
|
{
|
|
if (!file.Name.HasExtension (".paz"))
|
|
return null;
|
|
uint signature = file.View.ReadUInt32 (0);
|
|
// XXX encryption is queried for every .paz file
|
|
var scheme = QueryEncryption (file.Name, signature);
|
|
uint start_offset = scheme.Version > 0 ? 0x20u : 0u;
|
|
uint index_size = file.View.ReadUInt32 (start_offset);
|
|
start_offset += 4;
|
|
byte xor_key = (byte)(index_size >> 24);
|
|
if (xor_key != 0)
|
|
index_size ^= (uint)(xor_key << 24 | xor_key << 16 | xor_key << 8 | xor_key);
|
|
if (0 != (index_size & 7) || index_size + start_offset >= file.MaxOffset)
|
|
return null;
|
|
|
|
var arc_list = new List<Entry>();
|
|
var arc_dir = VFS.GetDirectoryName (file.Name);
|
|
long max_offset = file.MaxOffset;
|
|
for (char suffix = 'A'; suffix <= 'Z'; ++suffix)
|
|
{
|
|
var part_name = VFS.CombinePath (arc_dir, file.Name + suffix);
|
|
if (!VFS.FileExists (part_name))
|
|
break;
|
|
var part = VFS.FindFile (part_name);
|
|
arc_list.Add (part);
|
|
max_offset += part.Size;
|
|
}
|
|
var arc_name = Path.GetFileNameWithoutExtension (file.Name).ToLowerInvariant();
|
|
bool is_audio = AudioPazNames.Contains (arc_name);
|
|
bool is_video = VideoPazNames.Contains (arc_name);
|
|
Stream input = file.CreateStream (start_offset, index_size);
|
|
byte[] video_key = null;
|
|
List<Entry> dir;
|
|
try
|
|
{
|
|
if (xor_key != 0)
|
|
input = new XoredStream (input, xor_key);
|
|
var enc = new Blowfish (scheme.ArcKeys[arc_name].IndexKey);
|
|
input = new InputCryptoStream (input, enc.CreateDecryptor());
|
|
using (var index = new ArcView.Reader (input))
|
|
{
|
|
int count = index.ReadInt32();
|
|
if (!IsSaneCount (count))
|
|
return null;
|
|
if (is_video)
|
|
video_key = index.ReadBytes (0x100);
|
|
|
|
dir = new List<Entry> (count);
|
|
for (int i = 0; i < count; ++i)
|
|
{
|
|
var name = index.BaseStream.ReadCString();
|
|
var entry = FormatCatalog.Instance.Create<PazEntry> (name);
|
|
entry.Offset = index.ReadInt64();
|
|
entry.UnpackedSize = index.ReadUInt32();
|
|
entry.Size = index.ReadUInt32();
|
|
entry.AlignedSize = index.ReadUInt32();
|
|
if (!entry.CheckPlacement (max_offset))
|
|
return null;
|
|
entry.IsPacked = index.ReadInt32 () != 0;
|
|
if (string.IsNullOrEmpty (entry.Type) && is_audio)
|
|
{
|
|
entry.Type = "audio";
|
|
}
|
|
if (scheme.Version > 0)
|
|
{
|
|
string password = "";
|
|
if (!entry.IsPacked && scheme.TypeKeys != null)
|
|
{
|
|
password = scheme.GetTypePassword (name, is_audio);
|
|
}
|
|
if (!string.IsNullOrEmpty (password) || is_video)
|
|
{
|
|
password = string.Format ("{0} {1:X08} {2}", name.ToLowerInvariant(), entry.UnpackedSize, password);
|
|
entry.Key = Encodings.cp932.GetBytes (password);
|
|
}
|
|
}
|
|
dir.Add (entry);
|
|
}
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
input.Dispose();
|
|
}
|
|
List<ArcView> parts = null;
|
|
if (arc_list.Count > 0)
|
|
{
|
|
parts = new List<ArcView> (arc_list.Count);
|
|
try
|
|
{
|
|
foreach (var arc_entry in arc_list)
|
|
{
|
|
var arc_file = VFS.OpenView (arc_entry);
|
|
parts.Add (arc_file);
|
|
}
|
|
}
|
|
catch
|
|
{
|
|
foreach (var part in parts)
|
|
part.Dispose();
|
|
throw;
|
|
}
|
|
}
|
|
if (is_video)
|
|
{
|
|
if (scheme.Version < 1)
|
|
{
|
|
var table = new byte[0x100];
|
|
for (int i = 0; i < 0x100; ++i)
|
|
table[video_key[i]] = (byte)i;
|
|
video_key = table;
|
|
}
|
|
return new MovPazArchive (file, this, dir, scheme.Version, xor_key, video_key, parts);
|
|
}
|
|
return new PazArchive (file, this, dir, scheme.Version, xor_key, scheme.ArcKeys[arc_name].DataKey, parts);
|
|
}
|
|
|
|
public override Stream OpenEntry (ArcFile arc, Entry entry)
|
|
{
|
|
var parc = arc as PazArchiveBase;
|
|
var pent = entry as PazEntry;
|
|
if (null == parc || null == pent)
|
|
return base.OpenEntry (arc, entry);
|
|
|
|
Stream input = null;
|
|
try
|
|
{
|
|
long part_offset = 0;
|
|
long entry_start = pent.Offset;
|
|
long entry_end = pent.Offset + pent.AlignedSize;
|
|
foreach (var part in parc.Parts)
|
|
{
|
|
long part_end_offset = part_offset + part.MaxOffset;
|
|
if (entry_start < part_end_offset)
|
|
{
|
|
uint part_size = (uint)Math.Min (entry_end - entry_start, part_end_offset - entry_start);
|
|
var entry_part = part.CreateStream (entry_start - part_offset, part_size);
|
|
if (input != null)
|
|
input = new ConcatStream (input, entry_part);
|
|
else
|
|
input = entry_part;
|
|
entry_start += part_size;
|
|
if (entry_start >= entry_end)
|
|
break;
|
|
}
|
|
part_offset = part_end_offset;
|
|
}
|
|
if (null == input)
|
|
return Stream.Null;
|
|
|
|
if (parc.XorKey != 0)
|
|
input = new XoredStream (input, parc.XorKey);
|
|
|
|
input = parc.DecryptEntry (input, pent);
|
|
|
|
if (pent.Size < pent.AlignedSize)
|
|
input = new LimitStream (input, pent.Size);
|
|
if (pent.IsPacked)
|
|
input = new ZLibStream (input, CompressionMode.Decompress);
|
|
return input;
|
|
}
|
|
catch
|
|
{
|
|
if (input != null)
|
|
input.Dispose();
|
|
throw;
|
|
}
|
|
}
|
|
|
|
PazScheme QueryEncryption (string arc_name, uint signature)
|
|
{
|
|
PazScheme scheme = null;
|
|
if (!KnownSchemes.TryGetValue (signature, out scheme) && KnownTitles.Count > 1)
|
|
{
|
|
var title = FormatCatalog.Instance.LookupGame (arc_name);
|
|
scheme = GetScheme (title);
|
|
if (null == scheme)
|
|
{
|
|
var options = Query<PazOptions> (arcStrings.ArcEncryptedNotice);
|
|
scheme = options.Scheme;
|
|
}
|
|
}
|
|
arc_name = Path.GetFileNameWithoutExtension (arc_name).ToLowerInvariant();
|
|
if (null == scheme || !scheme.ArcKeys.ContainsKey (arc_name))
|
|
throw new UnknownEncryptionScheme();
|
|
return scheme;
|
|
}
|
|
|
|
public override ResourceOptions GetDefaultOptions ()
|
|
{
|
|
return new PazOptions { Scheme = GetScheme (Properties.Settings.Default.PAZTitle) };
|
|
}
|
|
|
|
public override object GetAccessWidget ()
|
|
{
|
|
return new GUI.WidgetPAZ (this);
|
|
}
|
|
|
|
PazScheme GetScheme (string title)
|
|
{
|
|
PazScheme scheme;
|
|
if (string.IsNullOrEmpty (title) || !KnownTitles.TryGetValue (title, out scheme))
|
|
return null;
|
|
return scheme;
|
|
}
|
|
|
|
public override ResourceScheme Scheme
|
|
{
|
|
get { return m_scheme; }
|
|
set { m_scheme = (MusicaScheme)value; }
|
|
}
|
|
|
|
MusicaScheme m_scheme = new MusicaScheme
|
|
{
|
|
KnownSchemes = new Dictionary<uint, PazScheme>(),
|
|
KnownTitles = new Dictionary<string, PazScheme>()
|
|
};
|
|
|
|
public IDictionary<uint, PazScheme> KnownSchemes { get { return m_scheme.KnownSchemes; } }
|
|
public IDictionary<string, PazScheme> KnownTitles { get { return m_scheme.KnownTitles; } }
|
|
}
|
|
|
|
[Serializable]
|
|
public class PazKey
|
|
{
|
|
public byte[] IndexKey;
|
|
public byte[] DataKey;
|
|
}
|
|
|
|
[Serializable]
|
|
public class PazScheme
|
|
{
|
|
public int Version;
|
|
public IDictionary<string, PazKey> ArcKeys;
|
|
public IDictionary<string, string> TypeKeys;
|
|
|
|
public string GetTypePassword (string name, bool is_audio)
|
|
{
|
|
string password = null;
|
|
if (name.Contains ('.'))
|
|
{
|
|
if (name.EndsWith (".png"))
|
|
TypeKeys.TryGetValue ("png", out password);
|
|
else if (name.EndsWith (".ogg") || is_audio)
|
|
TypeKeys.TryGetValue ("ogg", out password);
|
|
else if (name.EndsWith (".sc"))
|
|
TypeKeys.TryGetValue ("sc", out password);
|
|
else if (name.EndsWith (".avi") || name.EndsWith (".mpg") || name.EndsWith (".mpeg"))
|
|
TypeKeys.TryGetValue ("avi", out password);
|
|
}
|
|
else if (is_audio)
|
|
TypeKeys.TryGetValue ("ogg", out password);
|
|
return password ?? "";
|
|
}
|
|
}
|
|
|
|
[Serializable]
|
|
public class MusicaScheme : ResourceScheme
|
|
{
|
|
public IDictionary<uint, PazScheme> KnownSchemes;
|
|
public IDictionary<string, PazScheme> KnownTitles;
|
|
}
|
|
|
|
public class PazOptions : ResourceOptions
|
|
{
|
|
public PazScheme Scheme;
|
|
}
|
|
}
|