Edit File: express.js
const { ArgumentError } = require('../errors'); const { JwksClient } = require('../JwksClient'); const supportedAlg = require('./config'); const handleSigningKeyError = (err, cb) => { // If we didn't find a match, can't provide a key. if (err && err.name === 'SigningKeyNotFoundError') { return cb(null); } // If an error occured like rate limiting or HTTP issue, we'll bubble up the error. if (err) { return cb(err); } }; module.exports.expressJwtSecret = function (options) { if (options === null || options === undefined) { throw new ArgumentError('An options object must be provided when initializing expressJwtSecret'); } const client = new JwksClient(options); const onError = options.handleSigningKeyError || handleSigningKeyError; const expressJwt7Provider = async (req, token) => { if (!token) { return; } const header = token.header; if (!header || !supportedAlg.includes(header.alg)) { return; } try { const key = await client.getSigningKey(header.kid); return key.publicKey || key.rsaPublicKey; } catch (err) { return new Promise((resolve, reject) => { onError(err, (newError) => { if (!newError) { return resolve(); } reject(newError); }); }); } }; return function secretProvider(req, header, payload, cb) { //This function has 4 parameters to make it work with express-jwt@6 //but it also supports express-jwt@7 which only has 2. if (arguments.length === 4) { expressJwt7Provider(req, { header }) .then(key => { setImmediate(cb, null, key); }).catch(err => { setImmediate(cb, err); }); return; } return expressJwt7Provider(req, arguments[1]); }; };
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