tra-analysis/website/node_modules/jsonwebtoken/verify.js

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JavaScript
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2019-01-06 19:14:45 +00:00
var JsonWebTokenError = require('./lib/JsonWebTokenError');
var NotBeforeError = require('./lib/NotBeforeError');
var TokenExpiredError = require('./lib/TokenExpiredError');
var decode = require('./decode');
var timespan = require('./lib/timespan');
var jws = require('jws');
module.exports = function (jwtString, secretOrPublicKey, options, callback) {
if ((typeof options === 'function') && !callback) {
callback = options;
options = {};
}
if (!options) {
options = {};
}
//clone this object since we are going to mutate it.
options = Object.assign({}, options);
var done;
if (callback) {
done = callback;
} else {
done = function(err, data) {
if (err) throw err;
return data;
};
}
if (options.clockTimestamp && typeof options.clockTimestamp !== 'number') {
return done(new JsonWebTokenError('clockTimestamp must be a number'));
}
if (options.nonce !== undefined && (typeof options.nonce !== 'string' || options.nonce.trim() === '')) {
return done(new JsonWebTokenError('nonce must be a non-empty string'));
}
var clockTimestamp = options.clockTimestamp || Math.floor(Date.now() / 1000);
if (!jwtString){
return done(new JsonWebTokenError('jwt must be provided'));
}
if (typeof jwtString !== 'string') {
return done(new JsonWebTokenError('jwt must be a string'));
}
var parts = jwtString.split('.');
if (parts.length !== 3){
return done(new JsonWebTokenError('jwt malformed'));
}
var decodedToken;
try {
decodedToken = decode(jwtString, { complete: true });
} catch(err) {
return done(err);
}
if (!decodedToken) {
return done(new JsonWebTokenError('invalid token'));
}
var header = decodedToken.header;
var getSecret;
if(typeof secretOrPublicKey === 'function') {
if(!callback) {
return done(new JsonWebTokenError('verify must be called asynchronous if secret or public key is provided as a callback'));
}
getSecret = secretOrPublicKey;
}
else {
getSecret = function(header, secretCallback) {
return secretCallback(null, secretOrPublicKey);
};
}
return getSecret(header, function(err, secretOrPublicKey) {
if(err) {
return done(new JsonWebTokenError('error in secret or public key callback: ' + err.message));
}
var hasSignature = parts[2].trim() !== '';
if (!hasSignature && secretOrPublicKey){
return done(new JsonWebTokenError('jwt signature is required'));
}
if (hasSignature && !secretOrPublicKey) {
return done(new JsonWebTokenError('secret or public key must be provided'));
}
if (!hasSignature && !options.algorithms) {
options.algorithms = ['none'];
}
if (!options.algorithms) {
options.algorithms = ~secretOrPublicKey.toString().indexOf('BEGIN CERTIFICATE') ||
~secretOrPublicKey.toString().indexOf('BEGIN PUBLIC KEY') ?
['RS256', 'RS384', 'RS512', 'ES256', 'ES384', 'ES512'] :
~secretOrPublicKey.toString().indexOf('BEGIN RSA PUBLIC KEY') ?
['RS256', 'RS384', 'RS512'] :
['HS256', 'HS384', 'HS512'];
}
if (!~options.algorithms.indexOf(decodedToken.header.alg)) {
return done(new JsonWebTokenError('invalid algorithm'));
}
var valid;
try {
valid = jws.verify(jwtString, decodedToken.header.alg, secretOrPublicKey);
} catch (e) {
return done(e);
}
if (!valid) {
return done(new JsonWebTokenError('invalid signature'));
}
var payload = decodedToken.payload;
if (typeof payload.nbf !== 'undefined' && !options.ignoreNotBefore) {
if (typeof payload.nbf !== 'number') {
return done(new JsonWebTokenError('invalid nbf value'));
}
if (payload.nbf > clockTimestamp + (options.clockTolerance || 0)) {
return done(new NotBeforeError('jwt not active', new Date(payload.nbf * 1000)));
}
}
if (typeof payload.exp !== 'undefined' && !options.ignoreExpiration) {
if (typeof payload.exp !== 'number') {
return done(new JsonWebTokenError('invalid exp value'));
}
if (clockTimestamp >= payload.exp + (options.clockTolerance || 0)) {
return done(new TokenExpiredError('jwt expired', new Date(payload.exp * 1000)));
}
}
if (options.audience) {
var audiences = Array.isArray(options.audience) ? options.audience : [options.audience];
var target = Array.isArray(payload.aud) ? payload.aud : [payload.aud];
var match = target.some(function (targetAudience) {
return audiences.some(function (audience) {
return audience instanceof RegExp ? audience.test(targetAudience) : audience === targetAudience;
});
});
if (!match) {
return done(new JsonWebTokenError('jwt audience invalid. expected: ' + audiences.join(' or ')));
}
}
if (options.issuer) {
var invalid_issuer =
(typeof options.issuer === 'string' && payload.iss !== options.issuer) ||
(Array.isArray(options.issuer) && options.issuer.indexOf(payload.iss) === -1);
if (invalid_issuer) {
return done(new JsonWebTokenError('jwt issuer invalid. expected: ' + options.issuer));
}
}
if (options.subject) {
if (payload.sub !== options.subject) {
return done(new JsonWebTokenError('jwt subject invalid. expected: ' + options.subject));
}
}
if (options.jwtid) {
if (payload.jti !== options.jwtid) {
return done(new JsonWebTokenError('jwt jwtid invalid. expected: ' + options.jwtid));
}
}
if (options.nonce) {
if (payload.nonce !== options.nonce) {
return done(new JsonWebTokenError('jwt nonce invalid. expected: ' + options.nonce));
}
}
if (options.maxAge) {
if (typeof payload.iat !== 'number') {
return done(new JsonWebTokenError('iat required when maxAge is specified'));
}
var maxAgeTimestamp = timespan(options.maxAge, payload.iat);
if (typeof maxAgeTimestamp === 'undefined') {
return done(new JsonWebTokenError('"maxAge" should be a number of seconds or string representing a timespan eg: "1d", "20h", 60'));
}
if (clockTimestamp >= maxAgeTimestamp + (options.clockTolerance || 0)) {
return done(new TokenExpiredError('maxAge exceeded', new Date(maxAgeTimestamp * 1000)));
}
}
return done(null, payload);
});
};