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Added UnityCN.

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This commit is contained in:
Razmoth
2023-07-10 20:40:17 +04:00
parent 097060be89
commit 3ea9f71f00
18 changed files with 766 additions and 34 deletions
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43
AssetStudio/BundleFile.cs
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@@ -16,6 +16,7 @@ namespace AssetStudio
BlocksInfoAtTheEnd = 0x80,
OldWebPluginCompatibility = 0x100,
BlockInfoNeedPaddingAtStart = 0x200,
UnityCNEncryption = 0x400
}
[Flags]
@@ -66,6 +67,7 @@ namespace AssetStudio
}
private Game Game;
private UnityCN UnityCN;
public Header m_Header;
private Node[] m_DirectoryInfo;
@@ -75,6 +77,7 @@ namespace AssetStudio
private bool HasUncompressedDataHash = true;
private bool HasBlockInfoNeedPaddingAtStart = true;
public BundleFile(FileReader reader, Game game)
{
@@ -100,6 +103,10 @@ namespace AssetStudio
case "UnityFS":
case "ENCR":
ReadHeader(reader);
if (game.Type.IsUnityCN())
{
ReadUnityCN(reader);
}
ReadBlocksInfoAndDirectory(reader);
using (var blocksStream = CreateBlocksStream(reader.FullPath))
{
@@ -312,6 +319,32 @@ namespace AssetStudio
}
}
private void ReadUnityCN(EndianBinaryReader reader)
{
ArchiveFlags mask;
var version = ParseVersion();
//Flag changed it in these versions
if (version[0] < 2020 || //2020 and earlier
(version[0] == 2020 && version[1] == 3 && version[2] <= 34) || //2020.3.34 and earlier
(version[0] == 2021 && version[1] == 3 && version[2] <= 2) || //2021.3.2 and earlier
(version[0] == 2022 && version[1] == 3 && version[2] <= 1)) //2022.3.1 and earlier
{
mask = ArchiveFlags.BlockInfoNeedPaddingAtStart;
HasBlockInfoNeedPaddingAtStart = false;
}
else
{
mask = ArchiveFlags.UnityCNEncryption;
HasBlockInfoNeedPaddingAtStart = true;
}
if ((m_Header.flags & mask) != 0)
{
UnityCN = new UnityCN(reader);
}
}
private void ReadBlocksInfoAndDirectory(FileReader reader)
{
byte[] blocksInfoBytes;
@@ -403,7 +436,7 @@ namespace AssetStudio
};
}
}
if ((m_Header.flags & ArchiveFlags.BlockInfoNeedPaddingAtStart) != 0)
if (HasBlockInfoNeedPaddingAtStart && (m_Header.flags & ArchiveFlags.BlockInfoNeedPaddingAtStart) != 0)
{
reader.AlignStream(16);
}
@@ -439,14 +472,18 @@ namespace AssetStudio
{
compressedBytesSpan = Mr0kUtils.Decrypt(compressedBytesSpan, (Mr0k)Game);
}
if (Game.Type.IsOPFP())
if (Game.Type.IsUnityCN() && ((int)blockInfo.flags & 0x100) != 0)
{
OPFPUtils.Decrypt(compressedBytesSpan, reader.FullPath);
UnityCN.DecryptBlock(compressedBytes, compressedSize, i);
}
if (Game.Type.IsNetEase() && i == 0)
{
NetEaseUtils.Decrypt(compressedBytesSpan);
}
if (Game.Type.IsOPFP())
{
OPFPUtils.Decrypt(compressedBytesSpan, reader.FullPath);
}
var uncompressedSize = (int)blockInfo.uncompressedSize;
var uncompressedBytes = BigArrayPool<byte>.Shared.Rent(uncompressedSize);
var uncompressedBytesSpan = uncompressedBytes.AsSpan(0, uncompressedSize);