AopActionFilter

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

using System.Diagnostics;
using System.Text;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Controllers;
using Microsoft.AspNetCore.Mvc.Filters;
using Newtonsoft.Json;
using RuoVea.ExUtil;
using JsonSerializer = System.Text.Json.JsonSerializer;
 
namespace RuoVea.ApiService.Filters;
 
/// <summary>
/// 方法过滤器
/// </summary>
public class AopActionFilter : IAsyncActionFilter
{
    private static readonly List<string> IgnoreApi = new()
    {
        "api/sysfile/",
        "api/captcha",
        "/chathub"
    };
 
    private static readonly List<string> IgnorePowerApi = new()
    {
        "api/sysfile/",
        "api/captcha",
        "/chathub",
        "login"
    };
 
    private readonly SysLogService _logService;
    private readonly OperatorService _operatorService;
 
    public AopActionFilter(SysLogService logService, OperatorService operatorService)
    {
        _logService = logService;
        _operatorService = operatorService;
    }
 
    private static bool IsIgnoreApi(string url)
    {
        var isIgnore = false;
        foreach (var item in IgnorePowerApi.Where(url.Contains))
        {
            isIgnore = true;
        }
        return isIgnore;
    }
 
 
    public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
    {
        var user = _operatorService.User;
        #region 判断授权Api资源
 
        var superRole = AppUtils.Configuration[KeyUtils.SUPERROLEID];
        var urls = context.HttpContext.Request.Path.ToString().ToLower();
        if (!user.RoleArray.Contains(long.Parse(superRole)) && context.HttpContext.Request.Method != "GET"
                                                            && context.HttpContext.Request.Method != "OPTIONS"
                                                            && !IsIgnoreApi(urls))
        {
            Console.WriteLine("=======判断权限========");
            var redisStr = RedisService.cli.Get(KeyUtils.AUTHORIZZATIONAPI + ":" + user.Id);
            var apiList = !string.IsNullOrEmpty(redisStr) ? JsonSerializer.Deserialize<List<SysMenuApiUrl>>(redisStr) : null;
            if (apiList != null && !apiList.Exists(api => api.method == context.HttpContext.Request.Method && urls.Contains(api.url.ToLower())))
            {
                context.Result = new JsonResult(JResult<int>.Error("您无权限访问当前资源"));
                return;
            }
        }
        #endregion
 
        #region 安全签名认证
        var request = context.HttpContext.Request;
        var urlPath = request.Path.ToString().ToLower();
        var isSecurity = true;
        foreach (var item in IgnoreApi.Where(item => urlPath.Contains(item)))
        {
            isSecurity = true;
        }
 
        if (!isSecurity)
        {
            var method = request.Method;
            string appkey = string.Empty,
                timestamp = string.Empty,
                signature = string.Empty;
            //客户的唯一标示
            if (request.Headers.ContainsKey("appkey"))
            {
                appkey = request.Headers["appkey"].ToString();
                //Console.WriteLine("appkey："+appkey);
            }
 
            //13位时间戳
            if (request.Headers.ContainsKey("timestamp"))
            {
                timestamp = request.Headers["timestamp"];
                //Console.WriteLine("timestamp："+timestamp);
            }
 
            //签名
            if (request.Headers.ContainsKey("signature"))
            {
                signature = request.Headers["signature"];
                //Console.WriteLine("signature："+signature);
            }
 
            if (string.IsNullOrEmpty(appkey) || string.IsNullOrEmpty(timestamp) ||
                string.IsNullOrEmpty(signature))
            {
                Logger.Info("ApiSecurity——请求不合法");
                context.Result = new JsonResult(JResult<int>.Error("请求不合法"));
                return;
            }
            var security = AppUtils.GetConfig(Security.Name).Get<Security>();
            if (appkey != security.AppKey)
            {
                Logger.Info("ApiSecurity——请求不合法-k");
                context.Result = new JsonResult(JResult<int>.Error("请求不合法-k"));
                return;
            }
 
            //判断timespan是否有效
            double ts1 = 0;
            double ts2 = (DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0)).TotalMilliseconds;
            bool timespanvalidate = double.TryParse(timestamp, out ts1);
            double ts = ts2 - ts1;
            bool falg = ts > 1200 * 1000; //1分钟有效
            if (falg || (!timespanvalidate))
            {
                Logger.Info("ApiSecurity——请求不合法-t");
                context.Result = new JsonResult(JResult<int>.Error("请求不合法-t"));
                return;
            }
            //根据请求类型拼接参数
 
            IDictionary<string, string> parameters = new Dictionary<string, string>();
            string data = string.Empty;
            switch (method)
            {
                case "POST":
                    context.HttpContext.Request.Body.Position = 0;
                    StreamReader stream = new StreamReader(context.HttpContext.Request.Body);
                    string body = await stream.ReadToEndAsync();
                    //Console.WriteLine("body："+ body);
                    data = body;
                    context.HttpContext.Request.Body.Seek(0, SeekOrigin.Begin);
                    break;
                case "PUT":
                    context.HttpContext.Request.Body.Position = 0;
                    StreamReader streamPut = new StreamReader(context.HttpContext.Request.Body);
                    string bodyPut = await streamPut.ReadToEndAsync();
                    //Console.WriteLine("put："+ bodyPut);
                    data = bodyPut;
                    context.HttpContext.Request.Body.Seek(0, SeekOrigin.Begin);
                    break;
                case "DELETE":
                    context.HttpContext.Request.Body.Position = 0;
                    StreamReader streamDel = new StreamReader(context.HttpContext.Request.Body);
                    string bodyDel = await streamDel.ReadToEndAsync();
                    //Console.WriteLine("put："+ bodyPut);
                    data = bodyDel;
                    context.HttpContext.Request.Body.Seek(0, SeekOrigin.Begin);
                    break;
                case "GET":
                    {
                        var query = request.Query;
                        foreach (var item in query)
                        {
                            parameters.Add(item.Key, item.Value);
                        }
 
                        // 第二步：把字典按Key的字母顺序排序
                        IDictionary<string, string> sortedParams = new SortedDictionary<string, string>(parameters);
                        using IEnumerator<KeyValuePair<string, string>> dem = sortedParams.GetEnumerator();
 
                        // 第三步：把所有参数名和参数值串在一起
                        StringBuilder stringBuilder = new StringBuilder();
                        while (dem.MoveNext())
                        {
                            string key = dem.Current.Key;
                            string value = dem.Current.Value;
                            if (!string.IsNullOrEmpty(key))
                            {
                                stringBuilder.Append(key).Append(value);
                            }
                        }
 
                        data = stringBuilder.ToString();
                        //Console.WriteLine("GET："+JsonConvert.SerializeObject(data));
                        break;
                    }
            }
 
            if (!ApiSecurityValidate(timestamp, appkey, data, signature))
            {
                Logger.Info("ApiSecurity——参数不合法-Sign");
                context.Result = new JsonResult(JResult<int>.Error("参数不合法"));
                return;
            }
            //Console.WriteLine("success");
        }
 
        #endregion
 
        //验证实体
        if (!context.ModelState.IsValid)
        {
            context.Result = new JsonResult(JResult<string>.Error("参数不能为空~"));
            return;
        }
        //开始计时
        var stopwatch = Stopwatch.StartNew();
        var actionResult = await next();
        stopwatch.Stop();
        //读取返回类型以及数据
        var (isObject, actionData, logResult) = CheckResult(actionResult.Result);
 
        #region 收集日志信息
        if (!SkipLogging(context))
        {
            //接口Type
            var type = (context.ActionDescriptor as ControllerActionDescriptor)?.ControllerTypeInfo.AsType();
            var arguments = context.ActionArguments;
            var parametersStr = string.Empty;
            if (arguments.Count > 0)
            {
                parametersStr = JsonSerializer.Serialize(arguments);
            }
            //构建实体
            var logInfo = new SysLogDto()
            {
                Level = LogEnum.Info,
                LogType = LogTypeEnum.Operate,
                Module = type?.FullName,
                Method = context.HttpContext.Request.Method,
                OperateUser = user.Username,
                Parameters = parametersStr,
                IP = CommonUtils.GetIp(),
                Address = context.HttpContext.Request.Path + context.HttpContext.Request.QueryString,
                Browser = CommonUtils.GetBrowser(),
            };
            logInfo.ExecutionDuration = Convert.ToInt32(stopwatch.Elapsed.TotalMilliseconds);
            if (!string.IsNullOrEmpty(logResult))
            {
                logInfo.ReturnValue = logResult.Replace("\\", "").CutString(1000);
            }
            //保存日志信息
            await _logService.AddAsync(logInfo);
        }
        #endregion
 
        //返回统一格式
        if (isObject && !SkipJsonResult(context))
        {
            actionResult.Result = new JsonResult(JResult<object>.Success(actionData));
        }
        Console.WriteLine("Aop-Success");
    }
 
    /// <summary>
    /// 判断类和方法头上的特性是否要进行Action拦截
    /// </summary>
    /// <param name="actionContext"></param>
    /// <returns></returns>
    private static bool SkipLogging(ActionContext actionContext)
    {
        return actionContext.ActionDescriptor.EndpointMetadata.Any(m =>
            m.GetType().FullName == typeof(NoAuditLogAttribute).FullName);
    }
 
    /// <summary>
    /// 判断类和方法头上的特性是否要进行非统一结果返回拦截
    /// </summary>
    /// <param name="actionContext"></param>
    /// <returns></returns>
    private static bool SkipJsonResult(ActionContext actionContext)
    {
        return actionContext.ActionDescriptor.EndpointMetadata.Any(m =>
            m.GetType().FullName == typeof(NoJsonResultAttribute).FullName);
    }
 
    /// <summary>
    /// 验证参数是否正确
    /// </summary>
    /// <param name="timeStamp"></param>
    /// <param name="appId"></param>
    /// <param name="data"></param>
    /// <param name="signature"></param>
    /// <returns></returns>
    private static bool ApiSecurityValidate(string timeStamp, string appId, string data, string signature)
    {
        var security = AppUtils.GetConfig(Security.Name).Get<Security>();
        //签名key
        var signKey = security.SignKey;
        //拼接签名数据
        var signStr = appId + signKey + timeStamp + data;
        var newSign = signStr.MDString();
        return newSign == signature;
    }
 
    /// <summary>
    /// 验证返回类型是否满足Object格式
    /// </summary>
    /// <param name="result"></param>
    /// <returns></returns>
    private static (bool, object?, string?) CheckResult(IActionResult? result)
    {
        return result switch
        {
            ObjectResult objectResult => (true, objectResult.Value, JsonSerializer.Serialize(objectResult.Value)),
            JsonResult jsonResult => (true, jsonResult.Value, JsonSerializer.Serialize(jsonResult.Value)),
            ContentResult contentResult => (false, contentResult.Content, JsonSerializer.Serialize(contentResult.Content)),
            _ => (true, null, null)!
        };
    }
}