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support WARC 1.10 archives.

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morkt
2017-02-10 03:27:39 +04:00
parent c5ac986cde
commit e6ca959ded
3 changed files with 35 additions and 18 deletions
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42
ArcFormats/ShiinaRio/ArcWARC.cs
View File

@@ -2,7 +2,7 @@
//! \date Fri Apr 10 03:10:42 2015
//! \brief ShiinaRio engine archive format.
//
// Copyright (C) 2015-2016 by morkt
// Copyright (C) 2015-2017 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
@@ -83,14 +83,18 @@ namespace GameRes.Formats.ShiinaRio // 椎名里緒
if (!file.View.AsciiEqual (4, " 1."))
return null;
int version = file.View.ReadByte (7) - 0x30;
if (version < 1 || version > 7)
return null;
version = 100 + version * 10;
if (170 != version && 150 != version && 140 != version && 130 != version && 120 != version)
throw new NotSupportedException ("Not supported WARC version");
uint index_offset = 0xf182ad82u ^ file.View.ReadUInt32 (8);
uint index_offset = 0xF182AD82u ^ file.View.ReadUInt32 (8);
if (index_offset >= file.MaxOffset)
return null;
var scheme = QueryEncryption (file.Name);
EncryptionScheme scheme;
if (version > 110)
scheme = QueryEncryption (file.Name);
else
scheme = EncryptionScheme.Warc110;
if (null == scheme)
return null;
var decoder = new Decoder (version, scheme);
@@ -111,7 +115,7 @@ namespace GameRes.Formats.ShiinaRio // 椎名里緒
var zindex = new MemoryStream (enc_index, 8, (int)index_length-8);
index = new ZLibStream (zindex, CompressionMode.Decompress);
}
else
else if (version >= 120)
{
var unpacked = new byte[max_index_len];
index_length = UnpackRNG (enc_index, 0, index_length, unpacked);
@@ -119,6 +123,10 @@ namespace GameRes.Formats.ShiinaRio // 椎名里緒
return null;
index = new MemoryStream (unpacked, 0, (int)index_length);
}
else
{
index = new MemoryStream (enc_index, 0, (int)index_length);
}
using (var header = new BinaryReader (index))
{
byte[] name_buf = new byte[decoder.EntryNameSize];
@@ -151,15 +159,14 @@ namespace GameRes.Formats.ShiinaRio // 椎名里緒
var wentry = entry as WarcEntry;
if (null == warc || null == wentry || entry.Size < 8)
return arc.File.CreateStream (entry.Offset, entry.Size);
var enc_data = new byte[entry.Size];
if (entry.Size != arc.File.View.Read (entry.Offset, enc_data, 0, entry.Size))
return Stream.Null;
var enc_data = arc.File.View.ReadBytes (entry.Offset, entry.Size);
if (enc_data.Length <= 8)
return new BinMemoryStream (enc_data, entry.Name);
uint sig = LittleEndian.ToUInt32 (enc_data, 0);
uint unpacked_size = LittleEndian.ToUInt32 (enc_data, 4);
sig ^= (unpacked_size ^ 0x82AD82) & 0xffffff;
if (entry.Size > 8)
if (warc.Decoder.WarcVersion > 110)
{
sig ^= (unpacked_size ^ 0x82AD82) & 0xFFFFFF;
if (0 != (wentry.Flags & 0x80000000u)) // encrypted entry
warc.Decoder.Decrypt (enc_data, 8, entry.Size-8);
if (warc.Decoder.ExtraCrypt != null)
@@ -185,10 +192,13 @@ namespace GameRes.Formats.ShiinaRio // 椎名里緒
{
unpacked = new byte[unpacked_size];
unpack (enc_data, unpacked);
if (0 != (wentry.Flags & 0x40000000))
warc.Decoder.Decrypt2 (unpacked, 0, (uint)unpacked.Length);
if (warc.Decoder.ExtraCrypt != null)
warc.Decoder.ExtraCrypt.Decrypt (unpacked, 0, (uint)unpacked.Length, 0x204);
if (warc.Decoder.WarcVersion > 110)
{
if (0 != (wentry.Flags & 0x40000000))
warc.Decoder.Decrypt2 (unpacked, 0, (uint)unpacked.Length);
if (warc.Decoder.ExtraCrypt != null)
warc.Decoder.ExtraCrypt.Decrypt (unpacked, 0, (uint)unpacked.Length, 0x204);
}
}
return new BinMemoryStream (unpacked, entry.Name);
}

4
ArcFormats/ShiinaRio/WarcEncryption.cs
View File

@@ -42,6 +42,8 @@ namespace GameRes.Formats.ShiinaRio
public byte[] DecodeBin;
public IByteArray ShiinaImage;
public IDecryptExtra ExtraCrypt;
public static readonly EncryptionScheme Warc110 = new EncryptionScheme { EntryNameSize = 0x10 };
}
public interface IByteArray
@@ -136,7 +138,7 @@ namespace GameRes.Formats.ShiinaRio
void DoEncryption (byte[] data, int index, uint data_length, ContentEncryptor encryptor)
{
if (data_length < 3)
if (data_length < 3 || WarcVersion < 120)
return;
uint effective_length = Math.Min (data_length, 1024u);
int a, b;