hapi-auth-twilio-signature

A hapi.js authentication plugin for Twilio

##About

Use this authentication plugin for Twilio's webhooks to authenticate requests coming from Twilio https://www.twilio.com/platform/webhooks. This plugin will intercept the "X-Twilio-Signature" header token to be validated in the route.

##Usage

Twilio Signature authentication requires validating the "X-Twilio-Signature" header token. The 'twilio-signature' scheme takes the following options:

• validateFunc - (required) a twilio signature token validation function: function(signature, callback) where:
  • signature - a header signature sent from twilio via "X-Twilio-Signature"
  • callback - a callback function: function(err, isValid, credentials) where:
    • err - an internal error.
    • isValid - true if the signature is valid, otherwise false.
    • credentials - a credentials object passed back to the application in request.auth.credentials. Typically, credentials are only included when isValid is true, but there are cases when the application needs to know who tried to authenticate even when it fails

var twilio = require('twilio');

var token = 'YOUR_TWILIO_AUTH_TOKEN';

var validate = function (signature, callback) {

    if (!signature) {
        return callback(null, false);
    }

    var credentials = twilio.validateRequest(token, signature, url, params);

    if (twilio.validateRequest(token, signature, 'example.com', 'webhooks')) {
    	callback(null, true, credentials);
    }
};

server.pack.register(require('hapi-auth-twilio-signature'), function (err) {
    server.auth.strategy('twilio', 'twilio-signature', { validateFunc: validate });
    server.route({ method: 'POST', path: '/webhooks', config: { auth: 'twilio' } });
});