feathers-authentication-jwt
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JWT authentication strategy for feathers-authentication using Passport
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">import Debug from 'debug';
import merge from 'lodash.merge';
import omit from 'lodash.omit';
import pick from 'lodash.pick';
import DefaultVerifier from './verifier';
import { Strategy as JWTStrategy, ExtractJwt } from 'passport-jwt';
const debug = Debug('feathers-authentication-jwt');
const defaults = {
name: 'jwt',
bodyKey: 'accessToken'
};
const KEYS = [
'secret',
'header',
'entity',
'service',
'passReqToCallback',
'session',
'jwt'
];
export default function init (options = {}) {
return function jwtAuth () {
const app = this;
const _super = app.setup;
if (!app.passport) {
throw new Error(`Can not find app.passport. Did you initialize feathers-authentication before feathers-authentication-jwt?`);
}
l</span>et authOptions = app.get('auth') || <span class="branch-1 cbranch-no" title="branch not covered" >{};
let jwtOptions = authOptions[options.name] || {};
// NOTE (EK): Pull from global auth config to support legacy auth for an easier transition.
let jwtSettings = merge({}, defaults, pick(authOptions, KEYS), jwtOptions, omit(options, ['Verifier']));
if (typeof jwtSettings.header !== 'string') {
throw new Error(`You must provide a 'header' in your authentication configuration or pass one explicitly`);
}
<span class="missing-if-branch" title="if path not taken" >I</span>if (typeof jwtSettings.secret === 'undefined') {
<span class="cstat-no" title="statement not covered" > throw new Error(`You must provide a 'secret' in your authentication configuration or pass one explicitly`);</span>
}
let Verifier = DefaultVerifier;
let strategyOptions = merge({
secretOrKey: jwtSettings.secret,
jwtFromRequest: ExtractJwt.fromExtractors([
ExtractJwt.fromAuthHeaderWithScheme('Bearer'),
ExtractJwt.fromHeader(jwtSettings.header.toLowerCase()),
ExtractJwt.fromBodyField(jwtSettings.bodyKey)
])
}, jwtSettings.jwt, omit(jwtSettings, ['jwt', 'header', 'secret']));
// Normalize algorithm key
<span class="missing-if-branch" title="else path not taken" >E</span>if (!strategyOptions.algorithms && strategyOptions.algorithm) {
strategyOptions.algorithms = A</span>rray.isArray(strategyOptions.algorithm) ? <span class="branch-0 cbranch-no" title="branch not covered" >strategyOptions.algorithm : [strategyOptions.algorithm];
delete strategyOptions.algorithm;
}
// Support passing a custom verifier
if (options.Verifier) {
Verifier = options.Verifier;
}
app.setup = function () {
let result = _super.apply(this, arguments);
let verifier = new Verifier(app, jwtSettings);
if (!verifier.verify) {
throw new Error(`Your verifier must implement a 'verify' function. It should have the same signature as a jwt passport verify callback.`);
}
// Register 'jwt' strategy with passport
debug('Registering jwt authentication strategy with options:', strategyOptions);
app.passport.use(jwtSettings.name, new JWTStrategy(strategyOptions, verifier.verify.bind(verifier)));
app.passport.options(jwtSettings.name, jwtSettings);
return result;
};
};
}
// Exposed Modules
Object.assign(init, {
defaults,
ExtractJwt,
Verifier: DefaultVerifier
});
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