Merge pull request #326 from absences/decrypt

Assetbundle加载增加解密方法

Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/RawFileBuildPipeline/BuildTasks/TaskEncryption_RFBP.cs

@@ -0,0 +1,23 @@
+
+namespace YooAsset.Editor
+{
+    public class TaskEncryption_RFBP : TaskEncryption, IBuildTask
+    {
+        /// <summary>
+        /// 加密文件
+        /// </summary>
+        /// <param name="context"></param>
+        public void Run(BuildContext context)
+        {
+            var buildParameters = context.GetContextObject<BuildParametersContext>();
+            var buildMapContext = context.GetContextObject<BuildMapContext>();
+
+            var buildMode = buildParameters.Parameters.BuildMode;
+
+            if (buildMode == EBuildMode.ForceRebuild || buildMode == EBuildMode.IncrementalBuild)
+            {
+                EncryptingBundleFiles(buildParameters, buildMapContext);
+            }
+        }
+    }
+}

Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/RawFileBuildPipeline/BuildTasks/TaskEncryption_RFBP.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: b3e156139dcc25f4c9440ec3d6cb96d2
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/RawFileBuildPipeline/RawFileBuildPipeline.cs

@@ -32,6 +32,7 @@ namespace YooAsset.Editor
                     new TaskPrepare_RFBP(),
                     new TaskGetBuildMap_RFBP(),
                     new TaskBuilding_RFBP(),
+                    new TaskEncryption_RFBP(),
                     new TaskUpdateBundleInfo_RFBP(),
                     new TaskCreateManifest_RFBP(),
                     new TaskCreateReport_RFBP(),

Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/DefaultBuildinFileSystem.cs

@@ -2,6 +2,7 @@
 using System.IO;
 using System.Collections.Generic;
 using UnityEngine;
+using System.Text;
 
 namespace YooAsset
 {
@@ -98,6 +99,11 @@ namespace YooAsset
         /// 自定义参数：原生文件构建管线
         /// </summary>
         public bool RawFileBuildPipeline { private set; get; } = false;
+
+        /// <summary>
+        ///  自定义参数：解密方法类
+        /// </summary>
+        public IDecryptionServices DecryptionServices { private set; get; }
         #endregion
 
 
@@ -181,18 +187,22 @@ namespace YooAsset
 
         public virtual void SetParameter(string name, object value)
         {
-            if (name == "FILE_VERIFY_LEVEL")
+            if (name == FileSystemParameters.FILE_VERIFY_LEVEL)
             {
                 FileVerifyLevel = (EFileVerifyLevel)value;
             }
-            else if (name == "APPEND_FILE_EXTENSION")
+            else if (name == FileSystemParameters.APPEND_FILE_EXTENSION)
             {
                 AppendFileExtension = (bool)value;
             }
-            else if (name == "RAW_FILE_BUILD_PIPELINE")
+            else if (name == FileSystemParameters.RAW_FILE_BUILD_PIPELINE)
             {
                 RawFileBuildPipeline = (bool)value;
             }
+            else if (name == FileSystemParameters.DECRYPTION_SERVICES)
+            {
+                DecryptionServices = (IDecryptionServices)value;
+            }
             else
             {
                 YooLogger.Warning($"Invalid parameter : {name}");
@@ -210,10 +220,11 @@ namespace YooAsset
             // 创建解压文件系统
             var remoteServices = new UnpackRemoteServices(_packageRoot);
             _unpackFileSystem = new DefaultUnpackFileSystem();
-            _unpackFileSystem.SetParameter("REMOTE_SERVICES", remoteServices);
+            _unpackFileSystem.SetParameter(FileSystemParameters.REMOTE_SERVICES, remoteServices);
-            _unpackFileSystem.SetParameter("FILE_VERIFY_LEVEL", FileVerifyLevel);
+            _unpackFileSystem.SetParameter(FileSystemParameters.FILE_VERIFY_LEVEL, FileVerifyLevel);
-            _unpackFileSystem.SetParameter("APPEND_FILE_EXTENSION", AppendFileExtension);
+            _unpackFileSystem.SetParameter(FileSystemParameters.APPEND_FILE_EXTENSION, AppendFileExtension);
-            _unpackFileSystem.SetParameter("RAW_FILE_BUILD_PIPELINE", RawFileBuildPipeline);
+            _unpackFileSystem.SetParameter(FileSystemParameters.RAW_FILE_BUILD_PIPELINE, RawFileBuildPipeline);
+            _unpackFileSystem.SetParameter(FileSystemParameters.DECRYPTION_SERVICES, DecryptionServices);
             _unpackFileSystem.OnCreate(packageName, null);
         }
         public virtual void OnUpdate()
@@ -257,7 +268,17 @@ namespace YooAsset
                 return null;
 
             string filePath = GetBuildinFileLoadPath(bundle);
-            return FileUtility.ReadAllBytes(filePath);
+            var data = FileUtility.ReadAllBytes(filePath);
+            if (bundle.Encrypted)
+            {
+                if (DecryptionServices == null)
+                {
+                    YooLogger.Error($"DecryptionServices is Null!");
+                    return null;
+                }
+                return DecryptionServices.ReadFileData(data);
+            }
+            return data;
         }
         public virtual string ReadFileText(PackageBundle bundle)
         {
@@ -268,7 +289,18 @@ namespace YooAsset
                 return null;
 
             string filePath = GetBuildinFileLoadPath(bundle);
-            return FileUtility.ReadAllText(filePath);
+            var data = FileUtility.ReadAllBytes(filePath);
+
+            if (bundle.Encrypted)
+            {
+                if (DecryptionServices == null)
+                {
+                    YooLogger.Error($"DecryptionServices is Null!");
+                    return null;
+                }
+                data = DecryptionServices.ReadFileData(data);
+            }
+            return Encoding.UTF8.GetString(data);
         }
 
         #region 内部方法
@@ -310,6 +342,59 @@ namespace YooAsset
             string rootPath = PathUtility.Combine(Application.dataPath, "StreamingAssets", YooAssetSettingsData.Setting.DefaultYooFolderName);
             return PathUtility.Combine(rootPath, PackageName);
         }
+        public AssetBundle LoadAssetBundle(PackageBundle bundle)
+        {
+            string filePath = GetBuildinFileLoadPath(bundle);
+
+            if (bundle.Encrypted)
+            {
+                if (DecryptionServices == null)
+                {
+                    YooLogger.Error($"DecryptionServices is Null!");
+                    return null;
+                }
+                else
+                {
+                    return DecryptionServices.LoadAssetBundle(new DecryptFileInfo()
+                    {
+                        BundleName = bundle.BundleName,
+                        FileLoadCRC = bundle.UnityCRC,
+                        FileLoadPath = filePath,
+                    }, out _);
+                }
+            }
+            else
+            {
+                return AssetBundle.LoadFromFile(filePath);
+            }
+        }
+
+        public AssetBundleCreateRequest LoadAssetBundleAsync(PackageBundle bundle)
+        {
+            string filePath = GetBuildinFileLoadPath(bundle);
+
+            if (bundle.Encrypted)
+            {
+                if (DecryptionServices == null)
+                {
+                    YooLogger.Error($"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);
+            }
+        }
 
         /// <summary>
         /// 记录文件信息

Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/DBFSLoadBundleOperation.cs

@@ -41,14 +41,13 @@ namespace YooAsset
 
             if (_steps == ESteps.LoadBuidlinAssetBundle)
             {
-                string filePath = _fileSystem.GetBuildinFileLoadPath(_bundle);
                 if (_isWaitForAsyncComplete)
                 {
-                    Result = AssetBundle.LoadFromFile(filePath);
+                    Result = _fileSystem.LoadAssetBundle(_bundle); 
                 }
                 else
                 {
-                    _createRequest = AssetBundle.LoadFromFileAsync(filePath);
+                    _createRequest = _fileSystem.LoadAssetBundleAsync(_bundle);
                 }
                 _steps = ESteps.CheckLoadBuildinResult;
             }

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/DefaultCacheFileSystem.cs

@@ -3,6 +3,7 @@ using System.IO;
 using System.Collections.Generic;
 using System.Linq;
 using UnityEngine;
+using System.Text;
 
 namespace YooAsset
 {
@@ -97,6 +98,11 @@ namespace YooAsset
         /// 自定义参数：断点续传下载器关注的错误码
         /// </summary>
         public List<long> ResumeDownloadResponseCodes { private set; get; } = null;
+
+        /// <summary>
+        ///  自定义参数：解密方法类
+        /// </summary>
+        public IDecryptionServices DecryptionServices { private set; get; }
         #endregion
 
 
@@ -208,30 +214,34 @@ namespace YooAsset
 
         public virtual void SetParameter(string name, object value)
         {
-            if (name == "REMOTE_SERVICES")
+            if (name == FileSystemParameters.REMOTE_SERVICES)
             {
                 RemoteServices = (IRemoteServices)value;
             }
-            else if (name == "FILE_VERIFY_LEVEL")
+            else if (name == FileSystemParameters.FILE_VERIFY_LEVEL)
             {
                 FileVerifyLevel = (EFileVerifyLevel)value;
             }
-            else if (name == "APPEND_FILE_EXTENSION")
+            else if (name == FileSystemParameters.APPEND_FILE_EXTENSION)
             {
                 AppendFileExtension = (bool)value;
             }
-            else if (name == "RAW_FILE_BUILD_PIPELINE")
+            else if (name == FileSystemParameters.RAW_FILE_BUILD_PIPELINE)
             {
                 RawFileBuildPipeline = (bool)value;
             }
-            else if (name == "RESUME_DOWNLOAD_MINMUM_SIZE")
+            else if (name == FileSystemParameters.RESUME_DOWNLOAD_MINMUM_SIZE)
             {
                 ResumeDownloadMinimumSize = (long)value;
             }
-            else if (name == "RESUME_DOWNLOAD_RESPONSE_CODES")
+            else if (name == FileSystemParameters.RESUME_DOWNLOAD_RESPONSE_CODES)
             {
                 ResumeDownloadResponseCodes = (List<long>)value;
             }
+            else if (name == FileSystemParameters.DECRYPTION_SERVICES)
+            {
+                DecryptionServices = (IDecryptionServices)value;
+            }
             else
             {
                 YooLogger.Warning($"Invalid parameter : {name}");
@@ -307,9 +317,19 @@ namespace YooAsset
         {
             if (Exists(bundle) == false)
                 return null;
-
             string filePath = GetCacheFileLoadPath(bundle);
-            return FileUtility.ReadAllBytes(filePath);
+            var data = FileUtility.ReadAllBytes(filePath);
+
+            if (bundle.Encrypted)
+            {
+                if (DecryptionServices == null)
+                {
+                    YooLogger.Error($"DecryptionServices is Null!");
+                    return null;
+                }
+                return DecryptionServices.ReadFileData(data);
+            }
+            return data;
         }
         public virtual string ReadFileText(PackageBundle bundle)
         {
@@ -317,7 +337,18 @@ namespace YooAsset
                 return null;
 
             string filePath = GetCacheFileLoadPath(bundle);
-            return FileUtility.ReadAllText(filePath);
+            var data = FileUtility.ReadAllBytes(filePath);
+
+            if (bundle.Encrypted)
+            {
+                if (DecryptionServices == null)
+                {
+                    YooLogger.Error($"DecryptionServices is Null!");
+                    return null;
+                }
+                data = DecryptionServices.ReadFileData(data);
+            }
+            return Encoding.UTF8.GetString(data);
         }
 
         #region 内部方法
@@ -528,6 +559,60 @@ namespace YooAsset
         {
             return _wrappers.Keys.ToList();
         }
+
+        internal AssetBundle LoadAssetBundle(PackageBundle bundle)
+        {
+            string filePath = GetCacheFileLoadPath(bundle);
+
+            if (bundle.Encrypted)
+            {
+                if (DecryptionServices == null)
+                {
+                    YooLogger.Error($"DecryptionServices is Null!");
+                    return null;
+                }
+                else
+                {
+                    return DecryptionServices.LoadAssetBundle(new DecryptFileInfo()
+                    {
+                        BundleName = bundle.BundleName,
+                        FileLoadCRC = bundle.UnityCRC,
+                        FileLoadPath = filePath,
+                    }, out _);
+                }
+            }
+            else
+            {
+                return AssetBundle.LoadFromFile(filePath);
+            }
+        }
+
+        internal AssetBundleCreateRequest LoadAssetBundleAsync(PackageBundle bundle)
+        {
+            string filePath = GetCacheFileLoadPath(bundle);
+
+            if (bundle.Encrypted)
+            {
+                if (DecryptionServices == null)
+                {
+                    YooLogger.Error($"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);
+            }
+        }
         #endregion
     }
 }

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/DCFSLoadBundleOperation.cs

@@ -78,15 +78,15 @@ namespace YooAsset
 
             if (_steps == ESteps.LoadAssetBundle)
             {
-                string filePath = _fileSystem.GetCacheFileLoadPath(_bundle);
                 if (_isWaitForAsyncComplete)
                 {
-                    Result = AssetBundle.LoadFromFile(filePath);
+                    Result = _fileSystem.LoadAssetBundle(_bundle);
                 }
                 else
                 {
-                    _createRequest = AssetBundle.LoadFromFileAsync(filePath);
+                    _createRequest = _fileSystem.LoadAssetBundleAsync(_bundle);
                 }
+
                 _steps = ESteps.CheckResult;
             }
 

Assets/YooAsset/Runtime/FileSystem/DefaultWebFileSystem/DefaultWebFileSystem.cs

@@ -114,7 +114,7 @@ namespace YooAsset
 
         public virtual void SetParameter(string name, object value)
         {
-            if (name == "DISABLE_UNITY_WEB_CACHE")
+            if (name == FileSystemParameters.DISABLE_UNITY_WEB_CACHE)
             {
                 DisableUnityWebCache = (bool)value;
             }

Assets/YooAsset/Runtime/InitializeParameters.cs

@@ -55,6 +55,15 @@ namespace YooAsset
     /// </summary>
     public class FileSystemParameters
     {
+        public const string FILE_VERIFY_LEVEL = "FILE_VERIFY_LEVEL";
+        public const string DECRYPTION_SERVICES = "DECRYPTION_SERVICES";
+        public const string APPEND_FILE_EXTENSION = "APPEND_FILE_EXTENSION";
+        public const string RAW_FILE_BUILD_PIPELINE = "RAW_FILE_BUILD_PIPELINE";
+        public const string REMOTE_SERVICES = "REMOTE_SERVICES";
+        public const string DISABLE_UNITY_WEB_CACHE = "DISABLE_UNITY_WEB_CACHE";
+        public const string RESUME_DOWNLOAD_MINMUM_SIZE = "RESUME_DOWNLOAD_MINMUM_SIZE";
+        public const string RESUME_DOWNLOAD_RESPONSE_CODES = "RESUME_DOWNLOAD_RESPONSE_CODES";
+
         internal Dictionary<string, object> CreateParameters = new Dictionary<string, object>();
 
         /// <summary>
@@ -101,11 +110,12 @@ namespace YooAsset
         /// </summary>
         /// <param name="verifyLevel">缓存文件的校验等级</param>
         /// <param name="rootDirectory">内置文件的根路径</param>
-        public static FileSystemParameters CreateDefaultBuildinFileSystemParameters(EFileVerifyLevel verifyLevel = EFileVerifyLevel.Middle, string rootDirectory = null)
+        public static FileSystemParameters CreateDefaultBuildinFileSystemParameters(IDecryptionServices decryptionServices = null, EFileVerifyLevel verifyLevel = EFileVerifyLevel.Middle, string rootDirectory = null)
         {
             string fileSystemClass = typeof(DefaultBuildinFileSystem).FullName;
             var fileSystemParams = new FileSystemParameters(fileSystemClass, rootDirectory);
-            fileSystemParams.AddParameter("FILE_VERIFY_LEVEL", verifyLevel);
+            fileSystemParams.AddParameter(FILE_VERIFY_LEVEL, verifyLevel);
+            fileSystemParams.AddParameter(DECRYPTION_SERVICES, decryptionServices);
             return fileSystemParams;
         }
 
@@ -114,13 +124,14 @@ namespace YooAsset
         /// </summary>
         /// <param name="verifyLevel">缓存文件的校验等级</param>
         /// <param name="rootDirectory">内置文件的根路径</param>
-        public static FileSystemParameters CreateDefaultBuildinRawFileSystemParameters(EFileVerifyLevel verifyLevel = EFileVerifyLevel.Middle, string rootDirectory = null)
+        public static FileSystemParameters CreateDefaultBuildinRawFileSystemParameters(IDecryptionServices decryptionServices = null, EFileVerifyLevel verifyLevel = EFileVerifyLevel.Middle, string rootDirectory = null)
         {
             string fileSystemClass = typeof(DefaultBuildinFileSystem).FullName;
             var fileSystemParams = new FileSystemParameters(fileSystemClass, rootDirectory);
-            fileSystemParams.AddParameter("FILE_VERIFY_LEVEL", verifyLevel);
+            fileSystemParams.AddParameter(FILE_VERIFY_LEVEL, verifyLevel);
-            fileSystemParams.AddParameter("APPEND_FILE_EXTENSION", true);
+            fileSystemParams.AddParameter(APPEND_FILE_EXTENSION, true);
-            fileSystemParams.AddParameter("RAW_FILE_BUILD_PIPELINE", true);
+            fileSystemParams.AddParameter(RAW_FILE_BUILD_PIPELINE, true);
+            fileSystemParams.AddParameter(DECRYPTION_SERVICES, decryptionServices);
             return fileSystemParams;
         }
 
@@ -130,12 +141,13 @@ namespace YooAsset
         /// <param name="remoteServices">远端资源地址查询服务类</param>
         /// <param name="verifyLevel">缓存文件的校验等级</param>
         /// <param name="rootDirectory">文件系统的根目录</param>
-        public static FileSystemParameters CreateDefaultCacheFileSystemParameters(IRemoteServices remoteServices, EFileVerifyLevel verifyLevel = EFileVerifyLevel.Middle, string rootDirectory = null)
+        public static FileSystemParameters CreateDefaultCacheFileSystemParameters(IRemoteServices remoteServices, IDecryptionServices decryptionServices = null, EFileVerifyLevel verifyLevel = EFileVerifyLevel.Middle, string rootDirectory = null)
         {
             string fileSystemClass = typeof(DefaultCacheFileSystem).FullName;
             var fileSystemParams = new FileSystemParameters(fileSystemClass, rootDirectory);
-            fileSystemParams.AddParameter("REMOTE_SERVICES", remoteServices);
+            fileSystemParams.AddParameter(REMOTE_SERVICES, remoteServices);
-            fileSystemParams.AddParameter("FILE_VERIFY_LEVEL", verifyLevel);
+            fileSystemParams.AddParameter(FILE_VERIFY_LEVEL, verifyLevel);
+            fileSystemParams.AddParameter(DECRYPTION_SERVICES, decryptionServices);
             return fileSystemParams;
         }
 
@@ -145,14 +157,15 @@ namespace YooAsset
         /// <param name="remoteServices">远端资源地址查询服务类</param>
         /// <param name="verifyLevel">缓存文件的校验等级</param>
         /// <param name="rootDirectory">文件系统的根目录</param>
-        public static FileSystemParameters CreateDefaultCacheRawFileSystemParameters(IRemoteServices remoteServices, EFileVerifyLevel verifyLevel = EFileVerifyLevel.Middle, string rootDirectory = null)
+        public static FileSystemParameters CreateDefaultCacheRawFileSystemParameters(IRemoteServices remoteServices, IDecryptionServices decryptionServices = null, EFileVerifyLevel verifyLevel = EFileVerifyLevel.Middle, string rootDirectory = null)
         {
             string fileSystemClass = typeof(DefaultCacheFileSystem).FullName;
             var fileSystemParams = new FileSystemParameters(fileSystemClass, rootDirectory);
-            fileSystemParams.AddParameter("REMOTE_SERVICES", remoteServices);
+            fileSystemParams.AddParameter(REMOTE_SERVICES, remoteServices);
-            fileSystemParams.AddParameter("FILE_VERIFY_LEVEL", verifyLevel);
+            fileSystemParams.AddParameter(FILE_VERIFY_LEVEL, verifyLevel);
-            fileSystemParams.AddParameter("APPEND_FILE_EXTENSION", true);
+            fileSystemParams.AddParameter(APPEND_FILE_EXTENSION, true);
-            fileSystemParams.AddParameter("RAW_FILE_BUILD_PIPELINE", true);
+            fileSystemParams.AddParameter(RAW_FILE_BUILD_PIPELINE, true);
+            fileSystemParams.AddParameter(DECRYPTION_SERVICES, decryptionServices);
             return fileSystemParams;
         }
 
@@ -164,7 +177,7 @@ namespace YooAsset
         {
             string fileSystemClass = typeof(DefaultWebFileSystem).FullName;
             var fileSystemParams = new FileSystemParameters(fileSystemClass, null);
-            fileSystemParams.AddParameter("DISABLE_UNITY_WEB_CACHE", disableUnityWebCache);
+            fileSystemParams.AddParameter(DISABLE_UNITY_WEB_CACHE, disableUnityWebCache);
             return fileSystemParams;
         }
     }

Assets/YooAsset/Runtime/Services/IDecryptionServices.cs

@@ -34,5 +34,12 @@ namespace YooAsset
         /// 注意：加载流对象在资源包对象释放的时候会自动释放
         /// </summary>
         AssetBundleCreateRequest LoadAssetBundleAsync(DecryptFileInfo fileInfo, out Stream managedStream);
+
+        /// <summary>
+        /// 解密字节数据
+        /// </summary>
+        /// <param name="encryptData"></param>
+        /// <returns></returns>
+        byte[] ReadFileData(byte[] encryptData);
     }
 }