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@broadly/passport-canvas-app

v1.0.2

Published

Passport.js authentication strategy for Salesforce Canvas App (POST signed requests)

Downloads

2,052

Readme

Passport.js authentication strategy for Salesforce Canvas App (POST signed requests)

Setup

In order to use this Strategy, you'll need a Connected App with Force.com Canvas enabled, Canvas App URL that points to the authenticate endpoint, and Access Method set to Signed Request (POST).

npm install --save @broadly/passport-canvas-app

Strategy

Create a strategy using the connected app consumer secret:

const strategy = new Strategy({
  consumerSecret: '....'
}, function verifyUser(token, profile, done) {
  console.log(profile);
  return done(null, profile);
});

Authenticate

You will need to authenticate the canvas app endpoint, responding to POST (not GET) request:

app.post('/',
  passport.authenticate('canvas-app'),
  function canvasAppPage(req, res) {
    res.render('index', {
      parameters: req.body.parameters,
      record:     req.body.record,
      user:       req.user
    });
  }
)

If you are using sessions, don't forget to limit the session duration, and to reject unauthenticated requests on all other routes/methods.

app.use(function requireAuthentication(req, res, next) {
  if (req.isAuthenticated())
    next();
  else
    res.sendStatus(403);
});

User profile

The user profile is available from req.user:

req.user
=> {
  id:              'https://login.salesforce.com/id/00Dx00000001hxyEAA/005x0000001SyyEAAS',
  organization_id: '00Dx00000001hxyEAA',
  user_id:         '005x0000001SyyEAAS',
  display_name:    'Sean Forbes',
  email:           '[email protected]'
}

Parameters

If the apex:canvasApp component specifies any parameters, these parameters are available from req.body.parameters:

<apex:canvasApp parameters="{count: 2}" ... />
req.body.parameters
=> {
  count: 2 
}

Record

If the canvas app appears in association with an object, information about that object, and its fields, are available from req.body.record:

req.body.record
=> {
  attributes: {
    type: 'Account',
    url: '/services/data/v36.0/sobjects/Account/001xx000003DGWiAAO'
  },
  Id: '001xx000003DGWiAAO',
  Phone: '(555) 555-5555',
  Fax: '(555) 555-5555',
  BillingCity: 'Seattle'
}