@bitblit/epsilon
Version:
Tiny adapter to simplify building API gateway Lambda APIS
117 lines • 6.18 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
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if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
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_.trys.pop(); continue;
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op = body.call(thisArg, _);
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if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.LocalWebTokenManipulator = void 0;
var jwt = require("jsonwebtoken");
var logger_1 = require("@bitblit/ratchet/dist/common/logger");
var web_token_manipulator_util_1 = require("./web-token-manipulator-util");
var unauthorized_error_1 = require("../error/unauthorized-error");
/**
* Service for handling jwt tokens
*/
var LocalWebTokenManipulator = /** @class */ (function () {
function LocalWebTokenManipulator(encryptionKey, issuer) {
this.encryptionKey = encryptionKey;
this.issuer = issuer;
}
LocalWebTokenManipulator.prototype.refreshJWTString = function (tokenString, expirationSeconds) {
var now = new Date().getTime();
var payload = this.parseAndValidateJWTString(tokenString, now);
var time = payload['exp'] - payload['iat'];
time = expirationSeconds || time;
var expires = now + time;
payload['exp'] = expires;
payload['iat'] = now;
logger_1.Logger.debug('Signing new payload : %j', payload);
var token = jwt.sign(payload, this.encryptionKey); // , algorithm = 'HS256')
return token;
};
LocalWebTokenManipulator.prototype.parseAndValidateJWTString = function (tokenString, now) {
if (now === void 0) { now = new Date().getTime(); }
var payload = this.parseJWTString(tokenString);
if (payload['exp'] != null && now < payload['exp']) {
return payload;
}
else {
var age = now - payload['exp'];
throw new unauthorized_error_1.UnauthorizedError('Failing JWT token read/validate - token expired on ' + payload['exp'] + ', ' + age + ' ms ago');
}
};
LocalWebTokenManipulator.prototype.parseJWTString = function (tokenString) {
var payload = jwt.verify(tokenString, this.encryptionKey);
if (payload) {
logger_1.Logger.debug('Got Payload : %j', payload);
return payload;
}
else {
throw new unauthorized_error_1.UnauthorizedError('Unable to parse a token from this string');
}
};
LocalWebTokenManipulator.prototype.createJWTString = function (principal, userObject, roles, expirationSeconds, proxyUser) {
if (roles === void 0) { roles = ['USER']; }
if (expirationSeconds === void 0) { expirationSeconds = 3600; }
if (proxyUser === void 0) { proxyUser = null; }
logger_1.Logger.info('Creating JWT token for %s that expires in %s', principal, expirationSeconds);
var now = new Date().getTime();
var expires = now + expirationSeconds * 1000;
// Build token data and add claims
var tokenData = {
exp: expires,
iss: this.issuer,
sub: principal,
iat: now,
user: userObject,
proxy: proxyUser,
roles: roles
};
var token = jwt.sign(tokenData, this.encryptionKey); // , algorithm = 'HS256')
return token;
};
LocalWebTokenManipulator.prototype.extractTokenFromStandardEvent = function (event) {
return __awaiter(this, void 0, void 0, function () {
var tokenString;
return __generator(this, function (_a) {
tokenString = web_token_manipulator_util_1.WebTokenManipulatorUtil.extractTokenStringFromStandardEvent(event);
return [2 /*return*/, tokenString ? this.parseAndValidateJWTString(tokenString) : null];
});
});
};
return LocalWebTokenManipulator;
}());
exports.LocalWebTokenManipulator = LocalWebTokenManipulator;
//# sourceMappingURL=local-web-token-manipulator.js.map