React CAS Client

react-cas-client is a simple CAS Client for ReactJS for Apereo CAS server (CAS 2.0 and 3.0 protocol)

Installation

Install with npm

npm install react-cas-client

Install with yarn

yarn add react-cas-client

Usage

Initialize CAS Client

import CasClient, { constant } from "react-cas-client";

let casEndpoint = "xxxx.casserver.com";
let casOptions = { version: constant.CAS_VERSION_2_0 };

let casClient = new CasClient(casEndpoint, casOptions);

CAS Endpoint

Endpoint of CAS Server (eg. 'xxxx.casserver.com')

CAS Options

• path - CAS server service path (eg. '/cas-tmp') (default: '/cas')
• protocol - CAS server protocol, can be 'http', 'https') (default: 'https');
• version - CAS protocol version can be constant.CAS_VERSION_2_0, constant.CAS_VERSION_3_0 (default: constant.CAS_VERSION_3_0)
• validation_proxy_path - Proxy path for application to make call to CAS server to validate ticket (!! Related to CORS issue !!)

Start authorization flow (Login)

// Basic usage
casClient
  .auth()
  .then(successRes => {
    console.log(successRes);
    // Login user in state / locationStorage ()
    // eg. loginUser(response.user);

    // Update current path to trim any extra params in url
    // eg. this.props.history.replace(response.currentPath);
  })
  .catch(errorRes => {
    console.error(errorRes);
    // Error handling
    // displayErrorByType(errorRes.type)

    // Update current path to trim any extra params in url
    // eg. this.props.history.replace(response.currentPath);
  });

// Login with gateway
let gateway = true;

casClient
  .auth(gateway)
  .then(successRes => {})
  .catch(errorRes => {});

Gateway

Apply gateway param to CAS login url when gateway is given (Documentation)

• Boolean: true / false (default: false)

Possible Error Types

• constant.CAS_ERROR_FETCH - Error when validating ticket with CAS Server:
• constant.CAS_ERROR_PARSE_RESPONSE - Cannot parse response from CAS server
• constant.CAS_ERROR_AUTH_ERROR - User is not authorized

Logout CAS

// Assume current url is https://localhost.com/

// Basic usage
casClient.logout();

// Apply redirect url to CAS logout url
// You can applied redirectPath.
// In this case, https://localhost.com/logout will be applied to logout url
let redirectPath = "/logout";
casClient.logout(redirectPath);

Redirect Path

Apply redirect url to CAS logout url when refirectPath is given (Documentation)

• String: any path (default: /)

CORS Issue

Option 1

Update CAS server to set Access-Control-Allow-Origin for you application

Option 2

Using reverse proxy in your application, we will use ngnix as example.

1. Update nginx conf to pass request from */cas_proxy to your cas server - https://xxxx.casserver.com/

# nginx.conf

location /cas_proxy {
  proxy_pass http://xxxx.casserver.com/;
}

2. Apply CAS options - validation_proxy_path to '/cas_proxy'

Test

Test with npm

npm run test

Test with yarn

yarn run test

License

MIT license