mirror of
https://github.com/crskycode/GARbro.git
synced 2026-07-08 01:30:18 +08:00
implemented PBZ archives, PSB images and MV audio.
This commit is contained in:
morkt
223
ArcFormats/Cmvs/ArcPBZ.cs
Normal file
223
ArcFormats/Cmvs/ArcPBZ.cs
Normal file
@@ -0,0 +1,223 @@
|
||||
//! \file ArcPBZ.cs
|
||||
//! \date Thu Jun 23 19:12:32 2016
|
||||
//! \brief PVNS engine (CMVS precursor) resource archive.
|
||||
//
|
||||
// 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.Utility;
|
||||
|
||||
namespace GameRes.Formats.Pvns
|
||||
{
|
||||
internal class PbzArchive : ArcFile
|
||||
{
|
||||
public readonly byte[] ArcKey;
|
||||
public readonly byte[] ScriptKey;
|
||||
|
||||
public PbzArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, PbzKeys scheme)
|
||||
: base (arc, impl, dir)
|
||||
{
|
||||
ArcKey = scheme.ArcKey;
|
||||
ScriptKey = scheme.ScriptKey;
|
||||
}
|
||||
}
|
||||
|
||||
[Serializable]
|
||||
public class PbzKeys
|
||||
{
|
||||
public byte[] ArcKey;
|
||||
public byte[] ScriptKey;
|
||||
}
|
||||
|
||||
[Serializable]
|
||||
public class PbzScheme : ResourceScheme
|
||||
{
|
||||
public Dictionary<string, PbzKeys> KnownSchemes;
|
||||
}
|
||||
|
||||
[Export(typeof(ArchiveFormat))]
|
||||
public class PbzOpener : ArchiveFormat
|
||||
{
|
||||
public override string Tag { get { return "PBZ"; } }
|
||||
public override string Description { get { return "PVNS engine resource archive"; } }
|
||||
public override uint Signature { get { return 0x315A4250; } } // 'PBZ1'
|
||||
public override bool IsHierarchic { get { return false; } }
|
||||
public override bool CanCreate { get { return false; } }
|
||||
|
||||
public static Dictionary<string, PbzKeys> KnownSchemes = new Dictionary<string, PbzKeys>();
|
||||
|
||||
public override ResourceScheme Scheme
|
||||
{
|
||||
get { return new PbzScheme { KnownSchemes = KnownSchemes }; }
|
||||
set { KnownSchemes = ((PbzScheme)value).KnownSchemes; }
|
||||
}
|
||||
|
||||
public override ArcFile TryOpen (ArcView file)
|
||||
{
|
||||
if (0 == KnownSchemes.Count)
|
||||
return null;
|
||||
int count = file.View.ReadInt32 (4);
|
||||
if (!IsSaneCount (count))
|
||||
return null;
|
||||
uint index_size = file.View.ReadUInt32 (8);
|
||||
var index = file.View.ReadBytes (0x10, index_size);
|
||||
if (index.Length != index_size)
|
||||
return null;
|
||||
|
||||
var scheme = KnownSchemes.Values.First(); // XXX
|
||||
Decrypt (index, scheme.ArcKey);
|
||||
|
||||
long base_offset = 0x10 + index_size;
|
||||
int index_pos = 0;
|
||||
var dir = new List<Entry> (count);
|
||||
for (int i = 0; i < count; ++i)
|
||||
{
|
||||
int entry_size = LittleEndian.ToInt32 (index, index_pos);
|
||||
if (entry_size <= 0x18)
|
||||
return null;
|
||||
var name = Binary.GetCString (index, index_pos+0x18, entry_size - 0x18);
|
||||
var entry = FormatCatalog.Instance.Create<Entry> (name);
|
||||
entry.Size = LittleEndian.ToUInt32 (index, index_pos+4);
|
||||
entry.Offset = base_offset + LittleEndian.ToUInt32 (index, index_pos+8);
|
||||
if (!entry.CheckPlacement (file.MaxOffset))
|
||||
return null;
|
||||
dir.Add (entry);
|
||||
index_pos += entry_size;
|
||||
}
|
||||
return new PbzArchive (file, this, dir, scheme);
|
||||
}
|
||||
|
||||
public override Stream OpenEntry (ArcFile arc, Entry entry)
|
||||
{
|
||||
var parc = arc as PbzArchive;
|
||||
if (null == parc)
|
||||
return base.OpenEntry (arc, entry);
|
||||
var data = arc.File.View.ReadBytes (entry.Offset, entry.Size);
|
||||
Decrypt (data, parc.ArcKey);
|
||||
if (entry.Name.EndsWith (".scr", StringComparison.InvariantCultureIgnoreCase)
|
||||
&& Binary.AsciiEqual (data, "PSRA") && data.Length > 20)
|
||||
{
|
||||
data = DecryptScript (data, parc.ScriptKey);
|
||||
}
|
||||
return new MemoryStream (data);
|
||||
}
|
||||
|
||||
static void Decrypt (byte[] data, byte[] key)
|
||||
{
|
||||
if (0 == key.Length)
|
||||
return;
|
||||
for (int i = 0; i < data.Length; ++i)
|
||||
{
|
||||
data[i] = (byte)((data[i] ^ key[i % key.Length]) + 0x80);
|
||||
}
|
||||
}
|
||||
|
||||
byte[] DecryptScript (byte[] data, byte[] key)
|
||||
{
|
||||
int input_size = data.Length - 0x14;
|
||||
for (int i = 4; i < 0x14; ++i)
|
||||
{
|
||||
data[i] = (byte)((data[i] ^ 0xF5) - 0x10);
|
||||
}
|
||||
if (0 != (input_size & -4))
|
||||
{
|
||||
unsafe
|
||||
{
|
||||
fixed (byte* data8 = &data[0x14])
|
||||
{
|
||||
uint m = 0x817543;
|
||||
uint* data32 = (uint*)data8;
|
||||
for (int length = (((input_size & -4) - 1) >> 2) + 1; length > 0; --length)
|
||||
{
|
||||
*data32 ^= m;
|
||||
m += 0x1352467u;
|
||||
++data32;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
uint checksum = LittleEndian.ToUInt32 (data, 4);
|
||||
for (int i = 0x14; i < data.Length; ++i)
|
||||
{
|
||||
checksum -= data[i];
|
||||
}
|
||||
if (checksum != 0)
|
||||
throw new InvalidEncryptionScheme();
|
||||
|
||||
for (int i = 0x14; i < data.Length; ++i)
|
||||
{
|
||||
data[i] = Binary.RotByteR (data[i], 3);
|
||||
}
|
||||
int src = 0x14;
|
||||
for (int count = ((input_size - 2) >> 1) + 1; count > 0; --count)
|
||||
{
|
||||
byte t = data[src];
|
||||
data[src] = data[src+1];
|
||||
data[src+1] = t;
|
||||
src += 2;
|
||||
}
|
||||
int k = 0;
|
||||
for (int i = 0x14; i < data.Length; ++i)
|
||||
{
|
||||
data[i] = (byte)((data[i] ^ key[k++]) + 0x35);
|
||||
k %= key.Length;
|
||||
}
|
||||
int unpacked_size = LittleEndian.ToInt32 (data, 0x10);
|
||||
var output = new byte[unpacked_size];
|
||||
src = 0x14 + LittleEndian.ToInt32 (data, 8);
|
||||
int dst = 0;
|
||||
int bit_mask = 0x80;
|
||||
int bits = 0x14;
|
||||
while (dst < output.Length)
|
||||
{
|
||||
if (0 == bit_mask)
|
||||
{
|
||||
bit_mask = 0x80;
|
||||
++bits;
|
||||
}
|
||||
if (0 != (bit_mask & data[bits]))
|
||||
{
|
||||
int u = LittleEndian.ToUInt16 (data, src);
|
||||
src += 2;
|
||||
int offset = (u >> 5) + 1;
|
||||
int count = (u & 0x1F) + 3;
|
||||
Binary.CopyOverlapped (output, dst - offset, dst, count);
|
||||
dst += count;
|
||||
}
|
||||
else
|
||||
{
|
||||
output[dst++] = data[src++];
|
||||
}
|
||||
bit_mask >>= 1;
|
||||
}
|
||||
for (int i = 0; i < output.Length; ++i)
|
||||
{
|
||||
output[i] ^= 0x7E;
|
||||
}
|
||||
return output;
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user