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Code Issues Projects Releases Wiki Activity

fixed NPK creation. (#30)

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This commit is contained in:
morkt 2016-12-25 01:26:54 +04:00
parent 2b1bfa27ee
commit 2891650c79
1 changed files with 35 additions and 8 deletions
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43
ArcFormats/NitroPlus/ArcNPK.cs
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@ -101,7 +101,7 @@ namespace GameRes.Formats.NitroPlus
int count = file.View.ReadInt32 (0x18);
if (!IsSaneCount (count))
return null;
var key = QueryEncryption();
var key = QueryEncryption (file.Name);
if (null == key)
return null;
var aes = Aes.Create();
@ -213,10 +213,18 @@ namespace GameRes.Formats.NitroPlus
return new GUI.WidgetNPK();
}
byte[] QueryEncryption ()
byte[] QueryEncryption (string arc_name)
{
var options = Query<Npk2Options> (arcStrings.ArcEncryptedNotice);
return options.Key;
byte[] key = null;
var title = FormatCatalog.Instance.LookupGame (arc_name);
if (!string.IsNullOrEmpty (title))
key = GetKey (title);
if (null == key)
{
var options = Query<Npk2Options> (arcStrings.ArcEncryptedNotice);
key = options.Key;
}
return key;
}
byte[] GetKey (string title)
@ -230,6 +238,7 @@ namespace GameRes.Formats.NitroPlus
class NpkStoredEntry : PackedEntry
{
public byte[] RawName;
public byte[] CheckSum;
public int SegmentCount;
public uint AlignedSize;
}
@ -249,7 +258,7 @@ namespace GameRes.Formats.NitroPlus
var npk_entry = new NpkStoredEntry
{
Name = entry.Name,
RawName = enc.GetBytes (entry.Name),
RawName = enc.GetBytes (entry.Name.Replace ('\\', '/')),
SegmentCount = 0 == entry.Size ? 0 : 1,
};
dir.Add (npk_entry);
@ -287,16 +296,15 @@ namespace GameRes.Formats.NitroPlus
using (var index_stream = new CryptoStream (proxy, encryptor, CryptoStreamMode.Write))
using (var index = new BinaryWriter (index_stream))
{
var fill = new byte[0x20];
if (null != callback)
callback (callback_count++, null, arcStrings.MsgWritingIndex);
foreach (var entry in dir)
{
index.Write ((byte)0);
index.Write ((byte)1); // 0 -> segmentation enabled, 1 -> no segmentation
index.Write ((short)entry.RawName.Length);
index.Write (entry.RawName);
index.Write (entry.UnpackedSize);
index.Write (fill);
index.Write (entry.CheckSum);
index.Write (entry.SegmentCount);
if (entry.SegmentCount > 0)
{
@ -329,6 +337,7 @@ namespace GameRes.Formats.NitroPlus
entry.UnpackedSize = (uint)file.Length;
if (entry.Size > 0)
{
using (var sha256 = SHA256.Create())
using (var proxy = new ProxyStream (archive, true))
{
var encryptor = aes.CreateEncryptor();
@ -337,11 +346,21 @@ namespace GameRes.Formats.NitroPlus
output = measure;
if (ShouldCompress (entry.Name))
output = new DeflateStream (output, CompressionLevel.Optimal);
var checksum = new CryptoStream (output, sha256, CryptoStreamMode.Write);
output = checksum;
using (output)
{
file.CopyTo (output);
checksum.FlushFinalBlock();
entry.CheckSum = sha256.Hash;
}
entry.Size = (uint)measure.Count;
}
}
else
{
entry.CheckSum = EmptyFileHash;
}
entry.AlignedSize = (uint)(archive.Position - entry.Offset);
}
@ -352,6 +371,14 @@ namespace GameRes.Formats.NitroPlus
filename.EndsWith (".ogg", StringComparison.InvariantCultureIgnoreCase) ||
filename.EndsWith (".mpg", StringComparison.InvariantCultureIgnoreCase));
}
static readonly byte[] EmptyFileHash = GetDefaultHash();
static byte[] GetDefaultHash ()
{
using (var sha256 = SHA256.Create())
return sha256.ComputeHash (new byte[0]);
}
}
internal class NpkStream : Stream