Add bcrypt validation

https://github.com/strongloop/loopback/pull/2580

common/models/user.js

@@ -14,7 +14,7 @@ var utils = require('../../lib/utils');
 var path = require('path');
 var SALT_WORK_FACTOR = 10;
 var crypto = require('crypto');
-
+var MAX_PASSWORD_LENGTH = 72;
 var bcrypt;
 try {
   // Try the native module first
@@ -538,7 +538,6 @@ module.exports = function(User) {
     cb = cb || utils.createPromiseCallback();
     var UserModel = this;
     var ttl = UserModel.settings.resetPasswordTokenTTL || DEFAULT_RESET_PW_TTL;
-
     options = options || {};
     if (typeof options.email !== 'string') {
       var err = new Error(g.f('Email is required'));
@@ -548,7 +547,14 @@ module.exports = function(User) {
       return cb.promise;
     }
 
-    UserModel.findOne({ where: {email: options.email} }, function(err, user) {
+    try {
+      if (options.password) {
+        UserModel.validatePassword(options.password);
+      }
+    } catch (err) {
+      return cb(err);
+    }
+    UserModel.findOne({ where: { email: options.email }}, function(err, user) {
       if (err) {
         return cb(err);
       }
@@ -586,14 +592,20 @@ module.exports = function(User) {
   };
 
   User.validatePassword = function(plain) {
-    if (typeof plain === 'string' && plain) {
+    var err;
+    if (plain && typeof plain === 'string' && plain.length <= MAX_PASSWORD_LENGTH) {
       return true;
     }
-    var err =  new Error(g.f('Invalid password: %s', plain));
+    if (plain.length > MAX_PASSWORD_LENGTH) {
+      err = new Error(g.f('Password too long: %s', plain));
+      err.code = 'PASSWORD_TOO_LONG';
+    } else {
+      err =  new Error(g.f('Invalid password: %s', plain));
+      err.code = 'INVALID_PASSWORD';
+    }
     err.statusCode = 422;
     throw err;
   };
-
   /*!
    * Setup an extended user model.
    */

index.js

@@ -4,7 +4,7 @@
 // License text available at https://opensource.org/licenses/MIT
 
 var SG = require('strong-globalize');
-SG.SetRootDir(__dirname, {autonomousMsgLoading: 'all'});
+SG.SetRootDir(__dirname, { autonomousMsgLoading: 'all' });
 
 /**
  * loopback ~ public api

test/user.test.js

@@ -377,6 +377,68 @@ describe('User', function() {
     });
   });
 
+  describe('Password length validation', function() {
+    var pass72Char = new Array(70).join('a') + '012';
+    var pass73Char = pass72Char + '3';
+    var passTooLong = pass72Char + 'WXYZ1234';
+
+    it('rejects passwords longer than 72 characters', function(done) {
+      try {
+        User.create({ email: 'b@c.com', password: pass73Char }, function(err) {
+          if (err) return done(err);
+          done(new Error('User.create() should have thrown an error.'));
+        });
+      } catch (e) {
+        expect(e).to.match(/Password too long/);
+        done();
+      }
+    });
+
+    it('rejects a new user with password longer than 72 characters', function(done) {
+      try {
+        var u = new User({ username: 'foo', password: pass73Char });
+        assert(false, 'Error should have been thrown');
+      } catch (e) {
+        expect(e).to.match(/Password too long/);
+        done();
+      }
+    });
+
+    it('accepts passwords that are exactly 72 characters long', function(done) {
+      User.create({ email: 'b@c.com', password: pass72Char }, function(err, user) {
+        if (err) return done(err);
+        User.findById(user.id, function(err, userFound)  {
+          if (err) return done(err);
+          assert(userFound);
+          done();
+        });
+      });
+    });
+
+    it('allows login with password exactly 72 characters long', function(done) {
+      User.create({ email: 'b@c.com', password: pass72Char }, function(err) {
+        if (err) return done(err);
+        User.login({ email: 'b@c.com', password: pass72Char }, function(err, accessToken) {
+          if (err) return done(err);
+          assertGoodToken(accessToken);
+          assert(accessToken.id);
+          done();
+        });
+      });
+    });
+
+    it('rejects password reset when password is more than 72 chars', function(done) {
+      User.create({ email: 'b@c.com', password: pass72Char }, function(err) {
+        if (err) return done(err);
+        User.resetPassword({ email: 'b@c.com', password: pass73Char }, function(err) {
+          assert(err);
+          expect(err).to.match(/Password too long/);
+          done();
+        });
+      });
+    });
+  });
+
   describe('Access-hook for queries with email NOT case-sensitive', function() {
     it('Should not throw an error if the query does not contain {where: }', function(done) {
       User.find({}, function(err) {
@@ -692,6 +754,23 @@ describe('User', function() {
           done();
         });
     });
+
+    it('allows login with password too long but created in old LB version',
+    function(done) {
+      var bcrypt = require('bcryptjs');
+      var longPassword = new Array(80).join('a');
+      var oldHash = bcrypt.hashSync(longPassword, bcrypt.genSaltSync(1));
+
+      User.create({ email: 'b@c.com', password: oldHash }, function(err) {
+        if (err) return done(err);
+        User.login({ email: 'b@c.com', password: longPassword }, function(err, accessToken) {
+          if (err) return done(err);
+          assert(accessToken.id);
+          // we are logged in, the test passed
+          done();
+        });
+      });
+    });
   });
 
   function assertGoodToken(accessToken) {