Allow the creation of access token to be overriden

lib/models/user.js

@@ -2,14 +2,12 @@
  * Module Dependencies.
  */
 
-var Model = require('../loopback').Model
-  , loopback = require('../loopback')
+var loopback = require('../loopback')
+  , Model = loopback.Model
   , path = require('path')
   , SALT_WORK_FACTOR = 10
   , crypto = require('crypto')
   , bcrypt = require('bcryptjs')
-  , passport = require('passport')
-  , LocalStrategy = require('passport-local').Strategy
   , BaseAccessToken = require('./access-token')
   , DEFAULT_TTL = 1209600 // 2 weeks in seconds
   , DEFAULT_RESET_PW_TTL = 15 * 60 // 15 mins in seconds
@@ -128,6 +126,22 @@ var options = {
 
 var User = module.exports = Model.extend('User', properties, options);
 
+/**
+ * Create access token for the logged in user. This method can be overridden to
+ * customize how access tokens are generated
+ *
+ * @param [Number} ttl The requested ttl
+ * @callack {Function} cb The callback function
+ * @param {String|Error} err The error string or object
+ * @param {AccessToken} token The generated access token object
+ */
+User.prototype.createAccessToken = function(ttl, cb) {
+  ttl = Math.min(ttl || User.settings.ttl, User.settings.maxTTL);
+  this.accessTokens.create({
+    ttl: ttl
+  }, cb);
+};
+
 /**
  * Login a user by with the given `credentials`.
  *
@@ -144,6 +158,7 @@ var User = module.exports = Model.extend('User', properties, options);
  */
 
 User.login = function (credentials, include, fn) {
+  var self = this;
   if (typeof include === 'function') {
     fn = include;
     include = undefined;
@@ -162,7 +177,7 @@ User.login = function (credentials, include, fn) {
     return fn(err);
   }
 
-  this.findOne({where: query}, function(err, user) {
+  self.findOne({where: query}, function(err, user) {
     var defaultError = new Error('login failed');
     defaultError.statusCode = 401;
 
@@ -175,9 +190,7 @@ User.login = function (credentials, include, fn) {
           debug('An error is reported from User.hasPassword: %j', err);
           fn(defaultError);
         } else if(isMatch) {
-          user.accessTokens.create({
-            ttl: Math.min(credentials.ttl || User.settings.ttl, User.settings.maxTTL)
-          }, function(err, token) {
+          user.createAccessToken(credentials.ttl, function(err, token) {
             if (err) return fn(err);
             if (include === 'user') {
               // NOTE(bajtos) We can't set token.user here:

package.json

@@ -35,8 +35,6 @@
     "express": "~3.5.0",
     "strong-remoting": "~1.5.0",
     "inflection": "~1.3.5",
-    "passport": "~0.2.0",
-    "passport-local": "~1.0.0",
     "nodemailer": "~0.6.5",
     "ejs": "~1.0.0",
     "bcryptjs": "~0.7.12",

test/user.test.js

@@ -1,6 +1,5 @@
 var User;
 var AccessToken = loopback.AccessToken;
-var passport = require('passport');
 var MailConnector = require('../lib/connectors/mail');
 
 var userMemory = loopback.createDataSource({
@@ -9,6 +8,7 @@ var userMemory = loopback.createDataSource({
 
 describe('User', function(){
   var validCredentials = {email: 'foo@bar.com', password: 'bar'};
+  var validCredentialsWithTTL = {email: 'foo@bar.com', password: 'bar', ttl: 3600};
   var invalidCredentials = {email: 'foo1@bar.com', password: 'bar1'};
   var incompleteCredentials = {password: 'bar1'};
 
@@ -118,6 +118,44 @@ describe('User', function(){
       });
     });
 
+    it('Login a user by providing credentials with TTL', function(done) {
+      User.login(validCredentialsWithTTL, function (err, accessToken) {
+        assert(accessToken.userId);
+        assert(accessToken.id);
+        assert.equal(accessToken.ttl, validCredentialsWithTTL.ttl);
+        assert.equal(accessToken.id.length, 64);
+
+        done();
+      });
+    });
+
+    it('Login a user using a custom createAccessToken', function(done) {
+      var createToken = User.prototype.createAccessToken; // Save the original method
+      // Override createAccessToken
+      User.prototype.createAccessToken = function(ttl, cb) {
+        // Reduce the ttl by half for testing purpose
+        this.accessTokens.create({ttl: ttl /2 }, cb);
+      };
+      User.login(validCredentialsWithTTL, function (err, accessToken) {
+        assert(accessToken.userId);
+        assert(accessToken.id);
+        assert.equal(accessToken.ttl, 1800);
+        assert.equal(accessToken.id.length, 64);
+
+        User.findById(accessToken.userId, function(err, user) {
+          user.createAccessToken(120, function (err, accessToken) {
+            assert(accessToken.userId);
+            assert(accessToken.id);
+            assert.equal(accessToken.ttl, 60);
+            assert.equal(accessToken.id.length, 64);
+            // Restore create access token
+            User.prototype.createAccessToken = createToken;
+            done();
+          });
+        });
+      });
+    });
+    
     it('Login a user over REST by providing credentials', function(done) {
       request(app)
         .post('/users/login')