firebase - Cloud Functions for Firebase 的安全 HTTP 触发器

Question

有没有办法在触发云功能之前检查用户是否经过 firebase 授权？ (或在函数内)

Answer 1

是的。您需要将 Firebase ID token 与请求一起发送(例如在 AJAX 请求的 Authorization header 中)，然后使用 Firebase Admin SDK 进行验证。有一个in-depth example在 Cloud Functions for Firebase 示例存储库中。它看起来像这样(为 SO 帖子而缩短):

const functions = require('firebase-functions');
const admin = require('firebase-admin');
const cors = require('cors')();

const validateFirebaseIdToken = (req, res, next) => {
  cors(req, res, () => {
    const idToken = req.headers.authorization.split('Bearer ')[1];
    admin.auth().verifyIdToken(idToken).then(decodedIdToken => {
      console.log('ID Token correctly decoded', decodedIdToken);
      req.user = decodedIdToken;
      next();
    }).catch(error => {
      console.error('Error while verifying Firebase ID token:', error);
      res.status(403).send('Unauthorized');
    });
  });
};

exports.myFn = functions.https.onRequest((req, res) => {
  validateFirebaseIdToken(req, res, () => {
    // now you know they're authorized and `req.user` has info about them
  });
});