如何在React SPA的浏览器中保留Auth0登录状态

时间:2019-02-28 19:28:57

标签: reactjs authentication cookies react-router-v4 auth0

当前,当我创建路由时,我检查Auth0方法-isAuthenticated()-确定是否返回受保护的页面或重定向到登录。但是,此状态仅存在于内存中,不会在刷新浏览器时将用户保留在其页面上,我想这样做。

这是一个React / RR4 / React Context应用,我的Auth0方法列在Auth.js中(如下)。

强烈建议将登录状态存储在localStorage中。而且,如果我将Auth0令牌存储在cookie中,由于没有设置服务器验证,因此我不确定如何验证令牌。什么条件可以检查以确保安全的数据持久性?

ProtectedRoutes.jsx:

   <Route
      exact
      key={route.path}
      path={route.path}
      render={() => (
        // CONDITION TO CHECK
        context.auth.isAuthenticated()
          ? (
            <div>
              <route.component />
            </div>
          ) : <Redirect to="/login" />
        )}
      />

Auth.js(已添加供参考):

import auth0 from 'auth0-js';
import authConfig from './auth0-variables';

class Auth {
  accessToken;
  idToken;
  expiresAt;
  tokenRenewalTimeout;

  auth0 = new auth0.WebAuth({
    domain: authConfig.domain,
    clientID: authConfig.clientId,
    redirectUri: authConfig.callbackUrl,
    responseType: 'token id_token',
    scope: 'openid'
  });

  constructor() {
    this.scheduleRenewal();
    this.login = this.login.bind(this);
    this.logout = this.logout.bind(this);
    this.handleAuthentication = this.handleAuthentication.bind(this);
    this.isAuthenticated = this.isAuthenticated.bind(this);
    this.getAccessToken = this.getAccessToken.bind(this);
    this.getIdToken = this.getIdToken.bind(this);
    this.renewSession = this.renewSession.bind(this);
    this.scheduleRenewal = this.scheduleRenewal.bind(this);
  }

  login() {
    console.log('logging in!');
    this.auth0.authorize();
  }

  handleAuthentication() {
    return new Promise((resolve, reject) => {
      this.auth0.parseHash((err, authResult) => {
        if (err) return reject(err);
        console.log(authResult);
        if (!authResult || !authResult.idToken) {
          return reject(err);
        }
        this.setSession(authResult);
        resolve();
      });
    });
  }

  getAccessToken() {
    return this.accessToken;
  }

  getIdToken() {
    return this.idToken;
  }

  getExpiration() {
    return new Date(this.expiresAt);
  }

  isAuthenticated() {
    let expiresAt = this.expiresAt;
    return new Date().getTime() < expiresAt;
  }

  setSession(authResult) {
    localStorage.setItem('isLoggedIn', 'true');
    let expiresAt = (authResult.expiresIn * 1000) + new Date().getTime();
    this.accessToken = authResult.accessToken;
    this.idToken = authResult.idToken;
    this.expiresAt = expiresAt;
    this.scheduleRenewal();
  }

  renewSession() {
    this.auth0.checkSession({}, (err, authResult) => {
      if (authResult && authResult.accessToken && authResult.idToken) {
        this.setSession(authResult);
      } else if (err) {
        this.logout();
        console.log(`Could not get a new token. (${err.error}: ${err.error_description})`);
      }
    });
  }

  scheduleRenewal() {
    let expiresAt = this.expiresAt;
    const timeout = expiresAt - Date.now();
    if (timeout > 0) {
      this.tokenRenewalTimeout = setTimeout(() => {
        this.renewSession();
      }, timeout);
    }
  }

  logout() {
    this.accessToken = null;
    this.idToken = null;
    this.expiresAt = 0;
    localStorage.removeItem('isLoggedIn');
    clearTimeout(this.tokenRenewalTimeout);
    console.log('logged out!');
  }
}

export default Auth;

1 个答案:

答案 0 :(得分:1)

您可以使用Silent authentication在刷新浏览器时更新令牌。

专门针对您的React SPA应用

  • 在您的主要App组件中设置从tokenRenewedfalse的状态
  • 您在renewToken中已经有一个auth.js方法,因此请在componentDidMount方法中调用它
componentDidMount() {
   this.auth.renewToken(() => {
      this.setState({tokenRenewed : true});
   })
}
  • 更新renewToken以接受如下所示的回调cb
renewSession(cb) {
    this.auth0.checkSession({}, (err, authResult) => {
      if (authResult && authResult.accessToken && authResult.idToken) {
        this.setSession(authResult);
      } else if (err) {
        this.logout();
        console.log(`Could not get a new token. (${err.error}: ${err.error_description})`);
      }
      if(cb) cb(err, authResult);
    });
  }
  • 确保除非tokenRenewedtrue(即您通过静默身份验证更新了有效令牌),否则不要加载应用程序组件
render() {
    if(!this.state.tokenRenewed) return "loading...";
    return (
      // Your App component
    );
}

注释

  1. 您可能需要确保在“应用程序”设置中设置了正确的Allowed Web Origins,以使其正常工作
  2. 静默身份验证存在一些局限性,因为它要求在浏览器上启用第三方Cookie,并且在Safari中使用ITP。您应该设置一个自定义域来避免这种情况。请参阅官方的auth0文档以了解更多here
  3. 有关如何安全存储令牌here的更多详细信息