ea-crm-service-connector/lib/connectors/oauth.js

A connector for Microsoft Dynamics CRM instances

// https://github.com/AzureAD/azure-activedirectory-library-for-nodejs
// https://azure.microsoft.com/en-gb/documentation/articles/active-directory-devquickstarts-webapi-nodejs/
'use strict'
const AuthenticationContext = require('adal-node').AuthenticationContext
const configHelper = require('../../helpers/config-helper')
const crmConfig = configHelper.getCrmConfig()

var oAuthParameters = {}

var self = module.exports = {
  init: function (callback) {
    if (crmConfig && crmConfig.dynamics && crmConfig.dynamics.oauth) {
      oAuthParameters = crmConfig.dynamics.oauth
    }
    self.authorityUrl = oAuthParameters.authorityHostUrl + '/' + oAuthParameters.tenant
    self.context = new AuthenticationContext(self.authorityUrl)
    self.acquireToken(function (err, result) {
      if (err) {
        err.status = false
        return callback(err)
      }
      callback(null, result)
    })
  },
  authorityUrl: null,
  context: null,
  refreshToken: null,
  activeToken: null,
  tokenResponse: null,
  setActiveToken: function (activeToken) {
    self.activeToken = activeToken
  },
  getActiveToken: function () {
    return self.activeToken
  },
  getRefreshToken: function () {
    return self.refreshToken
  },
  parseToken: function (tokenResponse) {
    return tokenResponse
  },
  parseRefreshToken: function (tokenResponse) {
    return tokenResponse[ 'refreshToken' ]
  },
  setTokenRepsonse: function (tokenResponse) {
    self.tokenResponse = tokenResponse
  },
  setRefreshToken: function (tokenResponse) {
    self.refreshToken = tokenResponse
  },
  acquireToken: function (callback) {
    self.context.acquireTokenWithUsernamePassword(oAuthParameters.resource, oAuthParameters.username, oAuthParameters.password, oAuthParameters.clientId, function (err, tokenResponse) {
      if (err) {
        callback(err)
      } else {
        self.setActiveToken(tokenResponse)
        self.refreshTokenEvery()
        callback(null, tokenResponse)
      }
    })
  },
  authenticate: function (username, password, callback) {
    self.context.acquireTokenWithUsernamePassword(oAuthParameters.resource, username, password, oAuthParameters.clientId, callback)
  },
  aquireRefreshToken: function (callback) {
    self.context.acquireTokenWithRefreshToken(self.activeToken[ 'refreshToken' ], oAuthParameters.clientId, null, function (err, tokenResponse) {
      if (err) {
        callback(err)
      } else {
        self.setActiveToken(tokenResponse)
        callback(null, tokenResponse)
      }
    })
  },
  refreshTokenEvery: function () {
    setTimeout(function () {
      self.aquireRefreshToken(self.refreshTokenEvery)
    }, crmConfig.dynamics.refreshTokenEveryMillisecs)
  }
}