/// <summary>
/// 加密文件
/// </summary>
private List <string> EncryptFiles(AssetBundleBuilder.BuildParametersContext buildParameters, BuildMapContext buildMapContext)
{
var encryptionServices = buildParameters.Parameters.EncryptionServices;
// 加密资源列表
List <string> encryptList = new List <string>();
// 如果没有设置加密类
if (encryptionServices == null)
{
return(encryptList);
}
int progressValue = 0;
foreach (var bundleInfo in buildMapContext.BundleInfos)
{
if (encryptionServices.Check(bundleInfo.BundleName))
{
if (bundleInfo.IsRawFile)
{
UnityEngine.Debug.LogWarning($"Encryption not support raw file : {bundleInfo.BundleName}");
continue;
}
encryptList.Add(bundleInfo.BundleName);
// 注意：通过判断文件合法性，规避重复加密一个文件
string filePath = $"{buildParameters.PipelineOutputDirectory}/{bundleInfo.BundleName}";
byte[] fileData = File.ReadAllBytes(filePath);
if (EditorTools.CheckBundleFileValid(fileData))
{
byte[] bytes = encryptionServices.Encrypt(fileData);
File.WriteAllBytes(filePath, bytes);
BuildRunner.Log($"文件加密完成：{filePath}");
}
}
// 进度条
EditorTools.DisplayProgressBar("加密资源包", ++progressValue, buildMapContext.BundleInfos.Count);
}
EditorTools.ClearProgressBar();
if (encryptList.Count == 0)
{
UnityEngine.Debug.LogWarning($"没有发现需要加密的文件！");
}
return(encryptList);
}
/// <summary>
/// 获取AssetBundle对象，如果没有被缓存就重新加载。
/// </summary>
public static AssetBundle GetAssetBundle(string filePath)
{
// 如果文件不存在
if (File.Exists(filePath) == false)
{
Debug.LogWarning($"Not found asset bundle file : {filePath}");
return(null);
}
// 验证文件有效性（可能文件被加密）
byte[] fileData = File.ReadAllBytes(filePath);
if (EditorTools.CheckBundleFileValid(fileData) == false)
{
Debug.LogWarning($"The asset bundle file is invalid and may be encrypted : {filePath}");
return(null);
}
if (_loadedAssetBundles.TryGetValue(filePath, out AssetBundle bundle))
{
return(bundle);
}
else
{
AssetBundle newBundle = AssetBundle.LoadFromFile(filePath);
if (newBundle != null)
{
string[] assetNames = newBundle.GetAllAssetNames();
foreach (string name in assetNames)
{
newBundle.LoadAsset(name);
}
_loadedAssetBundles.Add(filePath, newBundle);
}
return(newBundle);
}
}
