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implemented decryption for PACKDAT archives.

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This commit is contained in:
morkt 2015-07-23 09:18:46 +04:00
parent 725c01498c
commit 674a1b8c51
3 changed files with 44 additions and 6 deletions
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42
ArcFormats/ArcInnGrey.cs
View File

@ -28,13 +28,18 @@ using System.IO;
using System.Collections.Generic;
using System.ComponentModel.Composition;
namespace GameRes.Formats.InnocentGrey
namespace GameRes.Formats.SystemEpsylon
{
internal class PackDatEntry : PackedEntry
{
public uint Flags;
}
[Export(typeof(ArchiveFormat))]
public class PakOpener : ArchiveFormat
{
public override string Tag { get { return "PACKDAT"; } }
public override string Description { get { return "Innocent Grey resource archive"; } }
public override string Description { get { return "SYSTEM-ε resource archive"; } }
public override uint Signature { get { return 0x4B434150; } } // "PACK"
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return false; } }
@ -59,9 +64,12 @@ namespace GameRes.Formats.InnocentGrey
for (int i = 0; i < count; ++i)
{
string name = file.View.ReadString (index_offset, 0x20);
var entry = FormatCatalog.Instance.CreateEntry (name);
var entry = new PackDatEntry { Name = name };
entry.Type = FormatCatalog.Instance.GetTypeFromName (name);
entry.Offset = file.View.ReadUInt32 (index_offset+0x20);
entry.Flags = file.View.ReadUInt32 (index_offset+0x24);
entry.Size = file.View.ReadUInt32 (index_offset+0x28);
entry.UnpackedSize = file.View.ReadUInt32 (index_offset+0x2c);
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
@ -69,5 +77,33 @@ namespace GameRes.Formats.InnocentGrey
}
return new ArcFile (file, this, dir);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var pentry = entry as PackDatEntry;
if (null == pentry || 0 == (pentry.Flags & 0x10000))
return arc.File.CreateStream (entry.Offset, entry.Size);
byte[] input = new byte[pentry.Size];
if (pentry.Size != arc.File.View.Read (entry.Offset, input, 0, pentry.Size))
return arc.File.CreateStream (entry.Offset, entry.Size);
unsafe
{
fixed (byte* buf_raw = input)
{
uint* encoded = (uint*)buf_raw;
uint key = pentry.Size >> 2;
key = (key << (((int)key & 7) + 8)) ^ key;
for (uint i = entry.Size / 4; i != 0; --i )
{
*encoded ^= key;
int cl = (int)(*encoded++ % 24);
key = (key << cl) | (key >> (32 - cl));
}
}
}
return new MemoryStream (input);
}
}
}

4
ArcFormats/Properties/AssemblyInfo.cs
View File

@ -32,5 +32,5 @@ using System.Runtime.InteropServices;
// You can specify all the values or you can default the Build and Revision Numbers
// by using the '*' as shown below:
// [assembly: AssemblyVersion("1.0.*")]
[assembly: AssemblyVersion ("1.0.8.82")]
[assembly: AssemblyFileVersion ("1.0.8.82")]
[assembly: AssemblyVersion ("1.0.8.83")]
[assembly: AssemblyFileVersion ("1.0.8.83")]

4
supported.html
View File

@ -40,7 +40,8 @@ Makai Tenshi Djibril -Episode 4-<br/>
Shukufuku no Campanella<br/>
</td></tr>
<tr><td>*.hg3</td><td><tt>HG-3</tt></td><td>No</td></tr>
<tr class="odd"><td>*.pak<br/>*.dat</td><td><tt>PACKDAT.</tt></td><td>No</td><td>Innocent Grey</td><td>
<tr class="odd"><td>*.pak<br/>*.dat</td><td><tt>PACKDAT.</tt></td><td>No</td><td>SYSTEM-ε</td><td>
Aoiro Rinne<br/>
Cartagra<br/>
PP -Pianissimo-<br/>
Nagomibako<br/>
@ -94,6 +95,7 @@ Umineko<br/>
<tr><td>*.pd</td><td><tt>PackOnly</tt><br/><tt>PackPlus</tt><br/><tt>FlyingShinePDFile</tt></td><td>Yes</td><td>Flying Shine</td><td>Cross†Channel</td></tr>
<tr class="odd"><td>*.rpa</td><td><tt>RPA-3.0</tt></td><td>Yes</td><td>Ren'Py</td><td>Katawa Shoujo</td></tr>
<tr><td>*.arc</td><td>-</td><td>Yes</td><td rowspan="2">Will</td><td rowspan="2">
Cynthia ~Sincerely to You~<br/>
Folklore Jam<br/>
Yume Miru Kusuri<br/>
</td></tr>