mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-29 14:24:13 +08:00
631 lines
21 KiB
C#
631 lines
21 KiB
C#
//! \file ArcNSA.cs
|
|
//! \date Sun Jul 27 11:25:46 2014
|
|
//! \brief NScripter NSA archives implementation.
|
|
//
|
|
// Copyright (C) 2014-2015 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.IO;
|
|
using System.Collections.Generic;
|
|
using System.ComponentModel.Composition;
|
|
using System.Text;
|
|
using GameRes.Formats.Strings;
|
|
using GameRes.Formats.Properties;
|
|
using GameRes.Utility;
|
|
|
|
namespace GameRes.Formats.NScripter
|
|
{
|
|
public class NsaEntry : PackedEntry
|
|
{
|
|
public Compression CompressionType { get; set; }
|
|
}
|
|
|
|
internal class NsaEncryptedArchive : ArcFile
|
|
{
|
|
public readonly byte[] Key;
|
|
|
|
public NsaEncryptedArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, byte[] key)
|
|
: base (arc, impl, dir)
|
|
{
|
|
Key = key;
|
|
}
|
|
}
|
|
|
|
public class NsaOptions : ResourceOptions
|
|
{
|
|
public Compression CompressionType { get; set; }
|
|
public string Password { get; set; }
|
|
}
|
|
|
|
[Serializable]
|
|
public class NsaScheme : ResourceScheme
|
|
{
|
|
public Dictionary<string, string> KnownKeys;
|
|
}
|
|
|
|
public enum Compression
|
|
{
|
|
Unknown = 256,
|
|
None = 0,
|
|
SPB = 1,
|
|
LZSS = 2,
|
|
NBZ = 4,
|
|
}
|
|
|
|
[Export(typeof(ArchiveFormat))]
|
|
public class NsaOpener : SarOpener
|
|
{
|
|
public override string Tag { get { return "NSA"; } }
|
|
|
|
public NsaOpener ()
|
|
{
|
|
Extensions = new string[] { "nsa", "dat" };
|
|
}
|
|
|
|
public static Dictionary<string, string> KnownKeys = new Dictionary<string, string>();
|
|
|
|
public override ResourceScheme Scheme
|
|
{
|
|
get { return new NsaScheme { KnownKeys = KnownKeys }; }
|
|
set { KnownKeys = ((NsaScheme)value).KnownKeys; }
|
|
}
|
|
|
|
public override ArcFile TryOpen (ArcView file)
|
|
{
|
|
List<Entry> dir = null;
|
|
bool zero_signature = 0 == file.View.ReadInt16 (0);
|
|
try
|
|
{
|
|
using (var input = file.CreateStream())
|
|
{
|
|
if (zero_signature)
|
|
input.Seek (2, SeekOrigin.Begin);
|
|
dir = ReadIndex (input);
|
|
if (null != dir)
|
|
return new ArcFile (file, this, dir);
|
|
}
|
|
}
|
|
catch { /* ignore parse errors */ }
|
|
if (zero_signature || !file.Name.HasExtension (".nsa"))
|
|
return null;
|
|
|
|
var password = QueryPassword();
|
|
if (string.IsNullOrEmpty (password))
|
|
return null;
|
|
var key = Encoding.ASCII.GetBytes (password);
|
|
|
|
using (var input = new EncryptedViewStream (file, key))
|
|
{
|
|
dir = ReadIndex (input);
|
|
if (null == dir)
|
|
return null;
|
|
return new NsaEncryptedArchive (file, this, dir, key);
|
|
}
|
|
}
|
|
|
|
protected List<Entry> ReadIndex (Stream file)
|
|
{
|
|
long base_offset = file.Position;
|
|
using (var input = new ArcView.Reader (file))
|
|
{
|
|
int count = Binary.BigEndian (input.ReadInt16());
|
|
if (!IsSaneCount (count))
|
|
return null;
|
|
base_offset += Binary.BigEndian (input.ReadUInt32());
|
|
if (base_offset >= file.Length || base_offset < 15 * count)
|
|
return null;
|
|
|
|
var dir = new List<Entry>();
|
|
for (int i = 0; i < count; ++i)
|
|
{
|
|
if (base_offset - file.Position < 15)
|
|
return null;
|
|
var name = file.ReadCString();
|
|
if (base_offset - file.Position < 13 || 0 == name.Length)
|
|
return null;
|
|
|
|
var entry = FormatCatalog.Instance.Create<NsaEntry> (name);
|
|
byte compression_type = input.ReadByte();
|
|
entry.Offset = Binary.BigEndian (input.ReadUInt32()) + base_offset;
|
|
entry.Size = Binary.BigEndian (input.ReadUInt32());
|
|
if (!entry.CheckPlacement (file.Length))
|
|
return null;
|
|
entry.UnpackedSize = Binary.BigEndian (input.ReadUInt32());
|
|
entry.IsPacked = compression_type != 0;
|
|
switch (compression_type)
|
|
{
|
|
case 0: entry.CompressionType = Compression.None; break;
|
|
case 1: entry.CompressionType = Compression.SPB; break;
|
|
case 2: entry.CompressionType = Compression.LZSS; break;
|
|
case 4: entry.CompressionType = Compression.NBZ; break;
|
|
default: entry.CompressionType = Compression.Unknown; break;
|
|
}
|
|
dir.Add (entry);
|
|
}
|
|
return dir;
|
|
}
|
|
}
|
|
|
|
public override Stream OpenEntry (ArcFile arc, Entry entry)
|
|
{
|
|
var nsa_arc = arc as NsaEncryptedArchive;
|
|
if (null == nsa_arc)
|
|
{
|
|
var input = arc.File.CreateStream (entry.Offset, entry.Size);
|
|
return UnpackEntry (input, entry as NsaEntry);
|
|
}
|
|
var encrypted = new EncryptedViewStream (arc.File, nsa_arc.Key);
|
|
var stream = new StreamRegion (encrypted, entry.Offset, entry.Size);
|
|
return UnpackEntry (stream, entry as NsaEntry);
|
|
}
|
|
|
|
protected Stream UnpackEntry (Stream input, NsaEntry nsa_entry)
|
|
{
|
|
if (null == nsa_entry
|
|
|| !(Compression.LZSS == nsa_entry.CompressionType ||
|
|
Compression.SPB == nsa_entry.CompressionType))
|
|
return input;
|
|
using (input)
|
|
{
|
|
var decoder = new Unpacker (input, nsa_entry.UnpackedSize);
|
|
if (Compression.SPB == nsa_entry.CompressionType)
|
|
return decoder.SpbDecodedStream();
|
|
else
|
|
return decoder.LzssDecodedStream();
|
|
}
|
|
}
|
|
|
|
private string QueryPassword ()
|
|
{
|
|
var options = Query<NsaOptions> (arcStrings.ArcEncryptedNotice);
|
|
return options.Password;
|
|
}
|
|
|
|
public override ResourceOptions GetDefaultOptions ()
|
|
{
|
|
return new NsaOptions {
|
|
CompressionType = Settings.Default.ONSCompression,
|
|
Password = Settings.Default.NSAPassword,
|
|
};
|
|
}
|
|
|
|
public override ResourceOptions GetOptions (object widget)
|
|
{
|
|
var w = widget as GUI.WidgetNSA;
|
|
if (null != w)
|
|
Settings.Default.NSAPassword = w.Password.Text;
|
|
return GetDefaultOptions();
|
|
}
|
|
|
|
public override object GetAccessWidget ()
|
|
{
|
|
return new GUI.WidgetNSA (KnownKeys);
|
|
}
|
|
|
|
public override object GetCreationWidget ()
|
|
{
|
|
return new GUI.CreateONSWidget();
|
|
}
|
|
|
|
public override void Create (Stream output, IEnumerable<Entry> list, ResourceOptions options,
|
|
EntryCallback callback)
|
|
{
|
|
var ons_options = GetOptions<NsaOptions> (options);
|
|
var encoding = Encodings.cp932.WithFatalFallback();
|
|
int callback_count = 0;
|
|
|
|
var real_entry_list = new List<NsaEntry>();
|
|
var used_names = new HashSet<string>();
|
|
int index_size = 0;
|
|
foreach (var entry in list)
|
|
{
|
|
if (!used_names.Add (entry.Name)) // duplicate name
|
|
continue;
|
|
try
|
|
{
|
|
index_size += encoding.GetByteCount (entry.Name) + 1;
|
|
}
|
|
catch (EncoderFallbackException X)
|
|
{
|
|
throw new InvalidFileName (entry.Name, arcStrings.MsgIllegalCharacters, X);
|
|
}
|
|
var header_entry = new NsaEntry { Name = entry.Name };
|
|
if (Compression.None != ons_options.CompressionType)
|
|
{
|
|
if (entry.Name.HasExtension (".bmp"))
|
|
header_entry.CompressionType = ons_options.CompressionType;
|
|
}
|
|
index_size += 13;
|
|
real_entry_list.Add (header_entry);
|
|
}
|
|
|
|
long start_offset = output.Position;
|
|
long base_offset = 6+index_size;
|
|
output.Seek (base_offset, SeekOrigin.Current);
|
|
foreach (var entry in real_entry_list)
|
|
{
|
|
using (var input = File.OpenRead (entry.Name))
|
|
{
|
|
var file_size = input.Length;
|
|
if (file_size > uint.MaxValue)
|
|
throw new FileSizeException();
|
|
long file_offset = output.Position - base_offset;
|
|
if (file_offset+file_size > uint.MaxValue)
|
|
throw new FileSizeException();
|
|
if (null != callback)
|
|
callback (callback_count++, entry, arcStrings.MsgAddingFile);
|
|
entry.Offset = file_offset;
|
|
entry.UnpackedSize = (uint)file_size;
|
|
if (Compression.LZSS == entry.CompressionType)
|
|
{
|
|
var packer = new Packer (input, output);
|
|
entry.Size = packer.EncodeLZSS();
|
|
}
|
|
else
|
|
{
|
|
entry.Size = entry.UnpackedSize;
|
|
entry.CompressionType = Compression.None;
|
|
input.CopyTo (output);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (null != callback)
|
|
callback (callback_count++, null, arcStrings.MsgWritingIndex);
|
|
output.Position = start_offset;
|
|
using (var writer = new BinaryWriter (output, encoding, true))
|
|
{
|
|
writer.Write (Binary.BigEndian ((short)real_entry_list.Count));
|
|
writer.Write (Binary.BigEndian ((uint)base_offset));
|
|
foreach (var entry in real_entry_list)
|
|
{
|
|
writer.Write (encoding.GetBytes (entry.Name));
|
|
writer.Write ((byte)0);
|
|
writer.Write ((byte)entry.CompressionType);
|
|
writer.Write (Binary.BigEndian ((uint)entry.Offset));
|
|
writer.Write (Binary.BigEndian ((uint)entry.Size));
|
|
writer.Write (Binary.BigEndian ((uint)entry.UnpackedSize));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* ONScripter-EN decompression routines.
|
|
*
|
|
* Copyright (c) 2001-2010 Ogapee. All rights reserved.
|
|
* (original ONScripter, of which this is a fork).
|
|
*
|
|
* ogapee@aqua.dti2.ne.jp
|
|
*
|
|
* Copyright (c) 2007-2010 "Uncle" Mion Sonozaki
|
|
*
|
|
* UncleMion@gmail.com
|
|
*
|
|
*/
|
|
/* LZSS encoder-decoder (c) Haruhiko Okumura */
|
|
|
|
internal static class LZSS
|
|
{
|
|
public const int EI = 8;
|
|
public const int EJ = 4;
|
|
public const int P = 1; /* If match length <= P then output one character */
|
|
public const int N = (1 << EI); /* buffer size */
|
|
public const int F = ((1 << EJ) + P); /* lookahead buffer size */
|
|
}
|
|
|
|
internal class Unpacker : MsbBitStream
|
|
{
|
|
private byte[] m_output;
|
|
private byte[] m_read_buf = new byte[4096];
|
|
|
|
public byte[] Output { get { return m_output; } }
|
|
|
|
public Unpacker (Stream input, uint unpacked_size) : base (input, true)
|
|
{
|
|
m_output = new byte[unpacked_size];
|
|
}
|
|
|
|
public Stream LzssDecodedStream ()
|
|
{
|
|
DecodeLZSS();
|
|
return new MemoryStream (m_output);
|
|
}
|
|
|
|
public Stream SpbDecodedStream ()
|
|
{
|
|
DecodeSPB();
|
|
return new MemoryStream (m_output);
|
|
}
|
|
|
|
uint DecodeLZSS ()
|
|
{
|
|
uint count = 0;
|
|
|
|
byte[] decomp_buffer = new byte[LZSS.N*2];
|
|
int r = LZSS.N - LZSS.F;
|
|
int c;
|
|
while (count < m_output.Length)
|
|
{
|
|
if (0 != GetBits (1))
|
|
{
|
|
c = GetBits (8);
|
|
if (-1 == c)
|
|
break;
|
|
m_output[count++] = (byte)c;
|
|
decomp_buffer[r++] = (byte)c;
|
|
r &= (LZSS.N - 1);
|
|
}
|
|
else
|
|
{
|
|
int i = GetBits (LZSS.EI);
|
|
if (-1 == i)
|
|
break;
|
|
int j = GetBits (LZSS.EJ);
|
|
if (-1 == j)
|
|
break;
|
|
for (int k = 0; k <= j + 1; k++)
|
|
{
|
|
c = decomp_buffer[(i + k) & (LZSS.N - 1)];
|
|
m_output[count++] = (byte)c;
|
|
decomp_buffer[r++] = (byte)c;
|
|
r &= (LZSS.N - 1);
|
|
}
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
uint DecodeSPB ()
|
|
{
|
|
uint width = (uint)Input.ReadByte() << 8;
|
|
width |= (uint)Input.ReadByte();
|
|
uint height = (uint)Input.ReadByte() << 8;
|
|
height |= (uint)Input.ReadByte();
|
|
|
|
uint width_pad = (4 - width * 3 % 4) % 4;
|
|
int stride = (int)(width * 3 + width_pad);
|
|
uint total_size = (uint)stride * height + 54;
|
|
|
|
if ((uint)m_output.Length < total_size)
|
|
m_output = new byte[total_size];
|
|
|
|
/* ---------------------------------------- */
|
|
/* Write header */
|
|
m_output[0] = (byte)'B';
|
|
m_output[1] = (byte)'M';
|
|
LittleEndian.Pack (total_size, m_output, 2);
|
|
m_output[10] = 54; // offset to the body
|
|
m_output[14] = 40; // header size
|
|
LittleEndian.Pack (width, m_output, 18);
|
|
LittleEndian.Pack (height, m_output, 22);
|
|
m_output[26] = 1; // the number of the plane
|
|
m_output[28] = 24; // bpp
|
|
|
|
byte[] decomp_buffer = new byte[width*height*4];
|
|
|
|
for (int i = 0; i < 3; i++)
|
|
{
|
|
uint count = 0;
|
|
int c = GetBits (8);
|
|
if (-1 == c)
|
|
break;
|
|
decomp_buffer[count++] = (byte)c;
|
|
while (count < width * height)
|
|
{
|
|
int n = GetBits (3);
|
|
if (0 == n)
|
|
{
|
|
decomp_buffer[count++] = (byte)c;
|
|
decomp_buffer[count++] = (byte)c;
|
|
decomp_buffer[count++] = (byte)c;
|
|
decomp_buffer[count++] = (byte)c;
|
|
continue;
|
|
}
|
|
int m;
|
|
if (7 == n)
|
|
m = GetBits (1) + 1;
|
|
else
|
|
m = n + 2;
|
|
|
|
for (uint j = 0; j < 4; j++)
|
|
{
|
|
if (8 == m)
|
|
{
|
|
c = GetBits (8);
|
|
}
|
|
else
|
|
{
|
|
int k = GetBits (m);
|
|
if (0 != (k & 1))
|
|
c += (k>>1) + 1;
|
|
else
|
|
c -= (k>>1);
|
|
}
|
|
decomp_buffer[count++] = (byte)c;
|
|
}
|
|
}
|
|
|
|
int pbuf = stride * (int)(height-1) + i + 54; // in m_output
|
|
int psbuf = 0; // in decomp_buffer
|
|
|
|
for (uint j = 0; j < height; j++)
|
|
{
|
|
if (0 != (j & 1))
|
|
{
|
|
for (uint k = 0; k < width; k++, pbuf -= 3)
|
|
m_output[pbuf] = decomp_buffer[psbuf++];
|
|
pbuf -= stride - 3;
|
|
}
|
|
else
|
|
{
|
|
for (uint k = 0; k < width; k++, pbuf += 3)
|
|
m_output[pbuf] = decomp_buffer[psbuf++];
|
|
pbuf -= stride + 3;
|
|
}
|
|
}
|
|
}
|
|
return total_size;
|
|
}
|
|
}
|
|
|
|
internal class Packer
|
|
{
|
|
private Stream m_input;
|
|
private Stream m_output;
|
|
private uint m_code_count = 0;
|
|
|
|
public uint PackedSize { get { return m_code_count; } }
|
|
|
|
public Packer (Stream input, Stream output)
|
|
{
|
|
m_input = input;
|
|
m_output = output;
|
|
}
|
|
|
|
public uint EncodeLZSS ()
|
|
{
|
|
byte[] comp_buffer = new byte[LZSS.N*2];
|
|
|
|
int i;
|
|
for (i = LZSS.N - LZSS.F; i < LZSS.N * 2; i++)
|
|
{
|
|
int c = m_input.ReadByte();
|
|
if (-1 == c)
|
|
break;
|
|
comp_buffer[i] = (byte)c;
|
|
}
|
|
int bufferend = i;
|
|
int r = LZSS.N - LZSS.F;
|
|
int s = 0;
|
|
while (r < bufferend)
|
|
{
|
|
int f1 = (LZSS.F <= bufferend - r) ? LZSS.F : bufferend - r;
|
|
int x = 0;
|
|
int y = 1;
|
|
int c = comp_buffer[r];
|
|
for (i = r - 1; i >= s; i--)
|
|
{
|
|
if (comp_buffer[i] == c)
|
|
{
|
|
int j;
|
|
for (j = 1; j < f1; j++)
|
|
if (comp_buffer[i + j] != comp_buffer[r + j])
|
|
break;
|
|
if (j > y)
|
|
{
|
|
x = i;
|
|
y = j;
|
|
}
|
|
}
|
|
}
|
|
if (y <= LZSS.P)
|
|
Output1 (c);
|
|
else
|
|
Output2 (x & (LZSS.N - 1), y - 2);
|
|
r += y;
|
|
s += y;
|
|
if (r >= LZSS.N * 2 - LZSS.F)
|
|
{
|
|
for (i = 0; i < LZSS.N; i++)
|
|
comp_buffer[i] = comp_buffer[i + LZSS.N];
|
|
bufferend -= LZSS.N;
|
|
r -= LZSS.N;
|
|
s -= LZSS.N;
|
|
while (bufferend < LZSS.N * 2)
|
|
{
|
|
c = m_input.ReadByte();
|
|
if (-1 == c)
|
|
break;
|
|
comp_buffer[bufferend++] = (byte)c;
|
|
}
|
|
}
|
|
}
|
|
FlushBitBuffer();
|
|
return m_code_count;
|
|
}
|
|
|
|
int m_bit_buffer = 0;
|
|
int m_bit_mask = 128;
|
|
|
|
void PutBit1 ()
|
|
{
|
|
m_bit_buffer |= m_bit_mask;
|
|
if ((m_bit_mask >>= 1) == 0)
|
|
{
|
|
m_output.WriteByte ((byte)m_bit_buffer);
|
|
m_bit_buffer = 0;
|
|
m_bit_mask = 128;
|
|
m_code_count++;
|
|
}
|
|
}
|
|
|
|
void PutBit0 ()
|
|
{
|
|
if ((m_bit_mask >>= 1) == 0)
|
|
{
|
|
m_output.WriteByte ((byte)m_bit_buffer);
|
|
m_bit_buffer = 0;
|
|
m_bit_mask = 128;
|
|
m_code_count++;
|
|
}
|
|
}
|
|
|
|
void FlushBitBuffer ()
|
|
{
|
|
if (m_bit_mask != 128)
|
|
{
|
|
m_output.WriteByte ((byte)m_bit_buffer);
|
|
m_code_count++;
|
|
}
|
|
}
|
|
|
|
void Output1 (int c)
|
|
{
|
|
PutBit1();
|
|
int mask = 256;
|
|
while (0 != (mask >>= 1))
|
|
{
|
|
if (0 != (c & mask)) PutBit1();
|
|
else PutBit0();
|
|
}
|
|
}
|
|
|
|
void Output2 (int x, int y)
|
|
{
|
|
PutBit0();
|
|
int mask = LZSS.N;
|
|
while (0 != (mask >>= 1))
|
|
{
|
|
if (0 != (x & mask)) PutBit1();
|
|
else PutBit0();
|
|
}
|
|
mask = (1 << LZSS.EJ);
|
|
while (0 != (mask >>= 1))
|
|
{
|
|
if (0 != (y & mask)) PutBit1();
|
|
else PutBit0();
|
|
}
|
|
}
|
|
}
|
|
}
|