README

authress-sdk.js

This is the Authress SDK used to integrate with the authorization as a service provider Authress at https://authress.io.

Usage

npm install authress-sdk

Then required the package:

const { AuthressClient } = require('authress-sdk');

Getting Started

Framework Examples

Express

Generic Javascript Example

Authorize using a user token

const { AuthressClient } = require('authress-sdk');

// What is my baseUrl? => API Host: https://authress.io/app/#/api?route=overview
const authressClient = new AuthressClient({ baseUrl: 'https://DOMAIN.api-REGION.authress.io' })

// on api route
[route('/resources/<resourceId>')]
function getResource(resourceId) {
  // Get the user token and pass it to authress
  const authorizationToken = request.headers.get('authorization');
  authressClient.setToken(authorizationToken);

  // Check Authress to authorize the user
  try {
    authressClient.userPermissions.authorizeUser(userId, `resources/${resourceId}`, 'READ');
  } catch (error) {
    // Will throw except if the user is not authorized to read the resource
    if (error.status === 404) {
      return 404;
    }
    throw error;
  }

  // On success, continue with the route code to load resource and return it
  return { resource: {}, statusCode: 200 };

Authorize with a service client

const { AuthressClient, ServiceClientTokenProvider } = require('authress-sdk');

// create an instance of the API class during service initialization
// Replace DOMAIN with the Authress domain for your account

// Create a service client in the Authress management portal and past the access token here
// This will generate a token automatically instead of passing the user token to the api
const accessToken = 'eyJrZXlJ....';
const authressClient = new AuthressClient({ baseUrl: 'https://DOMAIN.api-REGION.authress.io' }, new ServiceClientTokenProvider(accessToken));

// on api route
[route('/resources/<resourceId>')]
function getResource(resourceId) {
  // Check Authress to authorize the user
  try {
    authressClient.userPermissions.authorizeUser(userId, `resources/${resourceId}`, 'READ');
  } catch (error) {
    // Will throw except if the user is not authorized to read the resource
    if (error.status === 404) {
      return 404;
    }
    throw error;
  }

  // On success, continue with the route code to load resource and return it
  return { resource: {}, statusCode: 200 };

Creating resources

When a user creates a resource in your application, we want to ensure that they get access own that resource.

You may receive User does not have sufficient access to grant permissions to resources as an error along with the status code 403. This means that the service client or user jwt does not have access to create the access record. If using a service client, go to the Authress portal and create a one time record which grants the service client Authress:Owner to Resources/ so that it can manage access records for these types of resources.

await authressClient.accessRecords.createRecord({
  name: `Access To New Resource ${NewResourceId}`,
  users: [{ userId: requestUserId }],
  statements: [{
    resources: [{ resourceUri: `Resources/${NewResourceId}` }],
    // Owner by default gives full control over this new resource, including the ability to grant others access as well.
    roles: ['Authress:Owner']
  }]
});

Verifying a token using the token verifier

const { TokenVerifier } = require('authress-sdk');
const cookieManager = require('cookie');

try {
  // Grab authorization cookie from the request, the best way to do this will be framework specific.
  const cookies = cookieManager.parse(request.headers.cookie || '');
  const userToken = cookies.authorization || request.headers.Authorization.split(' ')[1];
  // What should my url be? => https://authress.io/app/#/setup?focus=domain
  const userIdentity = await TokenVerifier('https://login.application.com', userToken);
} catch (error) {
  console.log('User is unauthorized', error);
  return { statusCode: 401 };
}

Usage no npm install needed!