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(BoxOpener): support AOIBOX7 archives.

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This commit is contained in:
morkt
2016-04-09 00:28:21 +04:00
parent 7444fca7ea
commit bbadc4b1fd
1 changed files with 23 additions and 3 deletions
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26
ArcFormats/Aoi/ArcBOX.cs
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@@ -30,6 +30,17 @@ using System.Security.Cryptography;
namespace GameRes.Formats.Aoi
{
internal class BoxArchive : ArcFile
{
public readonly byte Key;
public BoxArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, byte key)
: base (arc, impl, dir)
{
Key = key;
}
}
[Export(typeof(ArchiveFormat))]
public class BoxOpener : ArchiveFormat
{
@@ -41,7 +52,12 @@ namespace GameRes.Formats.Aoi
public override ArcFile TryOpen (ArcView file)
{
if (!file.View.AsciiEqual (0, "AOIBX10"))
int version;
if (file.View.AsciiEqual (4, "X10"))
version = 10;
else if (file.View.AsciiEqual (4, "OX7\0"))
version = 7;
else
return null;
int count = file.View.ReadInt32 (8);
if (!IsSaneCount (count))
@@ -62,13 +78,17 @@ namespace GameRes.Formats.Aoi
dir.Add (entry);
index_offset += 0x18;
}
return new ArcFile (file, this, dir);
byte key = 7 == version ? (byte)0xB4 : (byte)0xB2;
return new BoxArchive (file, this, dir, key);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var input = arc.File.CreateStream (entry.Offset, entry.Size);
return new CryptoStream (input, new XorTransform (0xB2), CryptoStreamMode.Read);
var barc = arc as BoxArchive;
if (null == barc)
return input;
return new CryptoStream (input, new XorTransform (barc.Key), CryptoStreamMode.Read);
}
}
}