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feat : the bundle file decryption

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资源文件解密
This commit is contained in:
hevinci
2024-08-03 18:43:12 +08:00
parent 6b56275f87
commit d017688416
12 changed files with 319 additions and 226 deletions
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Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/DefaultCacheFileSystem.cs
+68 -65
View File
@@ -3,7 +3,6 @@ using System.IO;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using System.Text;
namespace YooAsset
{
@@ -206,39 +205,42 @@ namespace YooAsset
if (_loadedStream.TryGetValue(bundle.BundleGUID, out Stream managedStream))
{
managedStream.Close();
managedStream.Dispose();
if (managedStream != null)
{
managedStream.Close();
managedStream.Dispose();
}
_loadedStream.Remove(bundle.BundleGUID);
}
}
public virtual void SetParameter(string name, object value)
{
if (name == FileSystemParameters.REMOTE_SERVICES)
if (name == FileSystemParametersDefine.REMOTE_SERVICES)
{
RemoteServices = (IRemoteServices)value;
}
else if (name == FileSystemParameters.FILE_VERIFY_LEVEL)
else if (name == FileSystemParametersDefine.FILE_VERIFY_LEVEL)
{
FileVerifyLevel = (EFileVerifyLevel)value;
}
else if (name == FileSystemParameters.APPEND_FILE_EXTENSION)
else if (name == FileSystemParametersDefine.APPEND_FILE_EXTENSION)
{
AppendFileExtension = (bool)value;
}
else if (name == FileSystemParameters.RAW_FILE_BUILD_PIPELINE)
else if (name == FileSystemParametersDefine.RAW_FILE_BUILD_PIPELINE)
{
RawFileBuildPipeline = (bool)value;
}
else if (name == FileSystemParameters.RESUME_DOWNLOAD_MINMUM_SIZE)
else if (name == FileSystemParametersDefine.RESUME_DOWNLOAD_MINMUM_SIZE)
{
ResumeDownloadMinimumSize = (long)value;
}
else if (name == FileSystemParameters.RESUME_DOWNLOAD_RESPONSE_CODES)
else if (name == FileSystemParametersDefine.RESUME_DOWNLOAD_RESPONSE_CODES)
{
ResumeDownloadResponseCodes = (List<long>)value;
}
else if (name == FileSystemParameters.DECRYPTION_SERVICES)
else if (name == FileSystemParametersDefine.DECRYPTION_SERVICES)
{
DecryptionServices = (IDecryptionServices)value;
}
@@ -317,38 +319,57 @@ namespace YooAsset
{
if (Exists(bundle) == false)
return null;
string filePath = GetCacheFileLoadPath(bundle);
var data = FileUtility.ReadAllBytes(filePath);
if (bundle.Encrypted)
{
if (DecryptionServices == null)
{
YooLogger.Error($"DecryptionServices is Null!");
YooLogger.Error($"The {nameof(IDecryptionServices)} is null !");
return null;
}
return DecryptionServices.ReadFileData(data);
string filePath = GetCacheFileLoadPath(bundle);
var fileInfo = new DecryptFileInfo()
{
BundleName = bundle.BundleName,
FileLoadCRC = bundle.UnityCRC,
FileLoadPath = filePath,
};
return DecryptionServices.ReadFileData(fileInfo);
}
else
{
string filePath = GetCacheFileLoadPath(bundle);
return FileUtility.ReadAllBytes(filePath);
}
return data;
}
public virtual string ReadFileText(PackageBundle bundle)
{
if (Exists(bundle) == false)
return null;
string filePath = GetCacheFileLoadPath(bundle);
var data = FileUtility.ReadAllBytes(filePath);
if (bundle.Encrypted)
{
if (DecryptionServices == null)
{
YooLogger.Error($"DecryptionServices is Null!");
YooLogger.Error($"The {nameof(IDecryptionServices)} is null !");
return null;
}
data = DecryptionServices.ReadFileData(data);
string filePath = GetCacheFileLoadPath(bundle);
var fileInfo = new DecryptFileInfo()
{
BundleName = bundle.BundleName,
FileLoadCRC = bundle.UnityCRC,
FileLoadPath = filePath,
};
return DecryptionServices.ReadFileText(fileInfo);
}
else
{
string filePath = GetCacheFileLoadPath(bundle);
return FileUtility.ReadAllText(filePath);
}
return Encoding.UTF8.GetString(data);
}
#region 内部方法
@@ -560,58 +581,40 @@ namespace YooAsset
return _wrappers.Keys.ToList();
}
internal AssetBundle LoadAssetBundle(PackageBundle bundle)
/// <summary>
/// 加载加密资源文件
/// </summary>
public AssetBundle LoadEncryptedAssetBundle(PackageBundle bundle)
{
string filePath = GetCacheFileLoadPath(bundle);
var fileInfo = new DecryptFileInfo()
{
BundleName = bundle.BundleName,
FileLoadCRC = bundle.UnityCRC,
FileLoadPath = filePath,
};
if (bundle.Encrypted)
{
if (DecryptionServices == null)
{
YooLogger.Error($"DecryptionServices is Null!");
return null;
}
else
{
return DecryptionServices.LoadAssetBundle(new DecryptFileInfo()
{
BundleName = bundle.BundleName,
FileLoadCRC = bundle.UnityCRC,
FileLoadPath = filePath,
}, out _);
}
}
else
{
return AssetBundle.LoadFromFile(filePath);
}
var assetBundle = DecryptionServices.LoadAssetBundle(fileInfo, out var managedStream);
_loadedStream.Add(bundle.BundleGUID, managedStream);
return assetBundle;
}
internal AssetBundleCreateRequest LoadAssetBundleAsync(PackageBundle bundle)
/// <summary>
/// 加载加密资源文件
/// </summary>
public AssetBundleCreateRequest LoadEncryptedAssetBundleAsync(PackageBundle bundle)
{
string filePath = GetCacheFileLoadPath(bundle);
var fileInfo = new DecryptFileInfo()
{
BundleName = bundle.BundleName,
FileLoadCRC = bundle.UnityCRC,
FileLoadPath = filePath,
};
if (bundle.Encrypted)
{
if (DecryptionServices == null)
{
YooLogger.Error($"DecryptionServices is Empty!");
return null;
}
else
{
return DecryptionServices.LoadAssetBundleAsync(new DecryptFileInfo()
{
BundleName = bundle.BundleName,
FileLoadCRC = bundle.UnityCRC,
FileLoadPath = filePath,
}, out _);
}
}
else
{
return AssetBundle.LoadFromFileAsync(filePath);
}
var createRequest = DecryptionServices.LoadAssetBundleAsync(fileInfo, out var managedStream);
_loadedStream.Add(bundle.BundleGUID, managedStream);
return createRequest;
}
#endregion
}
Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/DCFSLoadBundleOperation.cs
+67 -30
View File
@@ -78,13 +78,41 @@ namespace YooAsset
if (_steps == ESteps.LoadAssetBundle)
{
if (_bundle.Encrypted)
{
if (_fileSystem.DecryptionServices == null)
{
_steps = ESteps.Done;
Status = EOperationStatus.Failed;
Error = $"The {nameof(IDecryptionServices)} is null !";
YooLogger.Error(Error);
return;
}
}
if (_isWaitForAsyncComplete)
{
Result = _fileSystem.LoadAssetBundle(_bundle);
if (_bundle.Encrypted)
{
Result = _fileSystem.LoadEncryptedAssetBundle(_bundle);
}
else
{
string filePath = _fileSystem.GetCacheFileLoadPath(_bundle);
Result = AssetBundle.LoadFromFile(filePath);
}
}
else
{
_createRequest = _fileSystem.LoadAssetBundleAsync(_bundle);
if (_bundle.Encrypted)
{
_createRequest = _fileSystem.LoadEncryptedAssetBundleAsync(_bundle);
}
else
{
string filePath = _fileSystem.GetCacheFileLoadPath(_bundle);
_createRequest = AssetBundle.LoadFromFileAsync(filePath);
}
}
_steps = ESteps.CheckResult;
@@ -112,51 +140,59 @@ namespace YooAsset
{
_steps = ESteps.Done;
Status = EOperationStatus.Succeed;
return;
}
else
// 注意：当缓存文件的校验等级为Low的时候，并不能保证缓存文件的完整性。
// 说明：在AssetBundle文件加载失败的情况下，我们需要重新验证文件的完整性！
EFileVerifyResult verifyResult = _fileSystem.VerifyCacheFile(_bundle);
if (verifyResult == EFileVerifyResult.Succeed)
{
// 注意：当缓存文件的校验等级为Low的时候，并不能保证缓存文件的完整性。
// 说明：在AssetBundle文件加载失败的情况下，我们需要重新验证文件的完整性！
EFileVerifyResult verifyResult = _fileSystem.VerifyCacheFile(_bundle);
if (verifyResult == EFileVerifyResult.Succeed)
if (_bundle.Encrypted)
{
// 注意：在安卓移动平台，华为和三星真机上有极小概率加载资源包失败。
// 说明：大多数情况在首次安装下载资源到沙盒内，游戏过程中切换到后台再回到游戏内有很大概率触发！
string filePath = _fileSystem.GetCacheFileLoadPath(_bundle);
byte[] fileData = FileUtility.ReadAllBytes(filePath);
if (fileData != null && fileData.Length > 0)
_steps = ESteps.Done;
Status = EOperationStatus.Failed;
Error = $"Failed to load encrypted asset bundle file : {_bundle.BundleName}";
YooLogger.Error(Error);
return;
}
// 注意：在安卓移动平台，华为和三星真机上有极小概率加载资源包失败。
// 说明：大多数情况在首次安装下载资源到沙盒内，游戏过程中切换到后台再回到游戏内有很大概率触发！
string filePath = _fileSystem.GetCacheFileLoadPath(_bundle);
byte[] fileData = FileUtility.ReadAllBytes(filePath);
if (fileData != null && fileData.Length > 0)
{
Result = AssetBundle.LoadFromMemory(fileData);
if (Result == null)
{
Result = AssetBundle.LoadFromMemory(fileData);
if (Result == null)
{
_steps = ESteps.Done;
Status = EOperationStatus.Failed;
Error = $"Failed to load assetBundle from memory : {_bundle.BundleName}";
YooLogger.Error(Error);
}
else
{
_steps = ESteps.Done;
Status = EOperationStatus.Succeed;
}
_steps = ESteps.Done;
Status = EOperationStatus.Failed;
Error = $"Failed to load asset bundle from memory : {_bundle.BundleName}";
YooLogger.Error(Error);
}
else
{
_steps = ESteps.Done;
Status = EOperationStatus.Failed;
Error = $"Failed to read assetBundle file bytes : {_bundle.BundleName}";
YooLogger.Error(Error);
Status = EOperationStatus.Succeed;
}
}
else
{
_steps = ESteps.Done;
_fileSystem.DeleteCacheFile(_bundle.BundleGUID);
Status = EOperationStatus.Failed;
Error = $"Find corrupted file and delete the file : {_bundle.BundleName}";
Error = $"Failed to read asset bundle file bytes : {_bundle.BundleName}";
YooLogger.Error(Error);
}
}
else
{
_steps = ESteps.Done;
_fileSystem.DeleteCacheFile(_bundle.BundleGUID);
Status = EOperationStatus.Failed;
Error = $"Find corrupted asset bundle file and delete : {_bundle.BundleName}";
YooLogger.Error(Error);
}
}
}
internal override void InternalWaitForAsyncComplete()
@@ -272,6 +308,7 @@ namespace YooAsset
_steps = ESteps.Done;
Status = EOperationStatus.Failed;
Error = $"Can not found cache raw bundle file : {filePath}";
YooLogger.Error(Error);
}
}
}