Implement support for re-authentication params.

Author: jaredhanson

lib/strategy.js

@@ -90,11 +90,19 @@ Strategy.prototype.authenticate = function(req, options) {
  * @api protected
  */
 Strategy.prototype.authorizationParams = function (options) {
-  var params = {},
-      display = options.display;
+  var params = {};
 
-  if (display) {
-    params['display'] = display;
+  // https://developers.facebook.com/docs/reference/dialogs/oauth/
+  if (options.display) {
+    params['display'] = options.display;
+  }
+  
+  // https://developers.facebook.com/docs/facebook-login/reauthentication/
+  if (options.authType) {
+    params['auth_type'] = options.authType;
+  }
+  if (options.authNonce) {
+    params['auth_nonce'] = options.authNonce;
   }
 
   return params;

test/strategy.authorizationparams.test.js

@@ -29,4 +29,23 @@ describe('Strategy', function() {
     });
   });
 
+  describe('handling a request to be redirected with reauthorization params', function() {
+    var url;
+  
+    before(function(done) {
+      chai.passport(strategy)
+        .redirect(function(u) {
+          url = u;
+          done();
+        })
+        .req(function(req) {
+        })
+        .authenticate({ authType: 'reauthenticate', authNonce: 'foo123' });
+    });
+  
+    it('should be redirected', function() {
+      expect(url).to.equal('https://www.facebook.com/dialog/oauth?auth_type=reauthenticate&auth_nonce=foo123&response_type=code&redirect_uri=&client_id=ABC123&type=web_server');
+    });
+  });
+  
 });