[#1314][#1489] Use collation instead of RegEx

- Add case insensitive indexes for User.email and User.username
- Update user queries by username or email so that they are case
  insensitive

server/config/passport.js

@@ -43,7 +43,7 @@ passport.use(new LocalStrategy({ usernameField: 'email' }, (email, password, don
  * Authentificate using Basic Auth (Username + Api Key)
  */
 passport.use(new BasicStrategy((userid, key, done) => {
-  User.findOne({ username: userid }, (err, user) => { // eslint-disable-line consistent-return
+  User.findOne({ username: userid }).collation({ locale: 'en', strength: 2 }).exec((err, user) => { // eslint-disable-line consistent-return
     if (err) { return done(err); }
     if (!user) { return done(null, false); }
     user.findMatchingKey(key, (innerErr, isMatch, keyDocument) => {
@@ -100,7 +100,7 @@ passport.use(new GitHubStrategy({
 
     User.findOne({
       email: { $in: emails },
-    }, (findByEmailErr, existingEmailUser) => {
+    }).collation({ locale: 'en', strength: 2 }).exec((findByEmailErr, existingEmailUser) => {
       if (existingEmailUser) {
         existingEmailUser.email = existingEmailUser.email || primaryEmail;
         existingEmailUser.github = profile.id;
@@ -143,9 +143,10 @@ passport.use(new GoogleStrategy({
 
     User.findOne({
       email: primaryEmail,
-    }, (findByEmailErr, existingEmailUser) => {
+    }).collation({ locale: 'en', strength: 2 }).exec((findByEmailErr, existingEmailUser) => {
       let username = profile._json.emails[0].value.split('@')[0];
-      User.findOne({ username }, (findByUsernameErr, existingUsernameUser) => {
+      User.findOne({ username }).collation({ locale: 'en', strength: 2 })
+        .exec((findByUsernameErr, existingUsernameUser) => {
           if (existingUsernameUser) {
             const adj = friendlyWords.predicates[Math.floor(Math.random() * friendlyWords.predicates.length)];
             username = slugify(`${username} ${adj}`);

server/controllers/collection.controller/collectionForUserExists.js

@@ -11,7 +11,7 @@ export default function collectionForUserExists(username, collectionId, callback
   }
 
   function findUser() {
-    return User.findOne({ username });
+    return User.findOne({ username }).collation({ locale: 'en', strength: 2 }).exec();
   }
 
   function findCollection(owner) {

server/controllers/collection.controller/listCollections.js

@@ -3,7 +3,8 @@ import User from '../../models/user';
 
 async function getOwnerUserId(req) {
   if (req.params.username) {
-    const user = await User.findOne({ username: req.params.username });
+    const user =
+      await User.findOne({ username: req.params.username }).collation({ locale: 'en', strength: 2 }).exec();
     if (user && user._id) {
       return user._id;
     }

server/controllers/project.controller.js

@@ -64,7 +64,7 @@ export function updateProject(req, res) {
 
 export function getProject(req, res) {
   const { project_id: projectId, username } = req.params;
-  User.findOne({ username }, (err, user) => { // eslint-disable-line
+  User.findOne({ username }).collation({ locale: "en", strength: 2 }).exec((err, user) => { // eslint-disable-line
     if (!user) {
       return res.status(404).send({ message: 'Project with that username does not exist' });
     }
@@ -141,7 +141,7 @@ export function projectExists(projectId, callback) {
 }
 
 export function projectForUserExists(username, projectId, callback) {
-  User.findOne({ username }, (err, user) => {
+  User.findOne({ username }).collation({ locale: 'en', strength: 2 }).exec((err, user) => {
     if (!user) {
       callback(false);
       return;

server/controllers/project.controller/getProjectsForUser.js

@@ -7,7 +7,7 @@ const UserNotFoundError = createApplicationErrorClass('UserNotFoundError');
 
 function getProjectsForUserName(username) {
   return new Promise((resolve, reject) => {
-    User.findOne({ username }, (err, user) => {
+    User.findOne({ username }).collation({ locale: 'en', strength: 2 }).exec((err, user) => {
       if (err) {
         reject(err);
         return;

server/controllers/user.controller.js

@@ -1,6 +1,5 @@
 import crypto from 'crypto';
 import async from 'async';
-import escapeStringRegexp from 'escape-string-regexp';
 
 import User from '../models/user';
 import mail from '../utils/mail';
@@ -31,12 +30,9 @@ const random = (done) => {
 };
 
 export function findUserByUsername(username, cb) {
-  User.findOne(
-    { username },
-    (err, user) => {
+  User.findOne({ username }).collation({ locale: 'en', strength: 2 }).exec((err, user) => {
     cb(user);
-    }
-  );
+  });
 }
 
 export function createUser(req, res, next) {
@@ -54,14 +50,12 @@ export function createUser(req, res, next) {
       verifiedTokenExpires: EMAIL_VERIFY_TOKEN_EXPIRY_TIME,
     });
 
-    User.findOne(
-      {
+    User.findOne({
       $or: [
-          { email: new RegExp(`^${escapeStringRegexp(email)}$`, 'i') },
-          { username: new RegExp(`^${escapeStringRegexp(username)}$`, 'i') }
+        { email },
+        { username }
       ]
-      },
-      (err, existingUser) => {
+    }).collation({ locale: 'en', strength: 2 }).exec((err, existingUser) => {
       if (err) {
         res.status(404).send({ error: err });
         return;
@@ -97,8 +91,7 @@ export function createUser(req, res, next) {
           });
         });
       });
-      }
-    );
+    });
   });
 }
 
@@ -106,8 +99,8 @@ export function duplicateUserCheck(req, res) {
   const checkType = req.query.check_type;
   const value = req.query[checkType];
   const query = {};
-  query[checkType] = new RegExp(`^${escapeStringRegexp(value)}$`, 'i');
-  User.findOne(query, (err, user) => {
+  query[checkType] = value;
+  User.findOne(query).collation({ locale: 'en', strength: 2 }).exec((err, user) => {
     if (user) {
       return res.json({
         exists: true,
@@ -151,7 +144,8 @@ export function resetPasswordInitiate(req, res) {
   async.waterfall([
     random,
     (token, done) => {
-      User.findOne({ email: req.body.email.toLowerCase() }, (err, user) => {
+      User.findOne({ email: req.body.email.toLowerCase() })
+        .collation({ locale: 'en', strength: 2 }).exec((err, user) => {
           if (!user) {
             res.json({ success: true, message: 'If the email is registered with the editor, an email has been sent.' });
             return;
@@ -281,7 +275,7 @@ export function updatePassword(req, res) {
 }
 
 export function userExists(username, callback) {
-  User.findOne({ username: new RegExp(`^${escapeStringRegexp(username)}$`, 'i') }, (err, user) => (
+  User.findOne(username).collation({ locale: 'en', strength: 2 }).exec((err, user) => (
     user ? callback(true) : callback(false)
   ));
 }

server/models/user.js

@@ -1,5 +1,4 @@
 import mongoose from 'mongoose';
-import escapeStringRegexp from 'escape-string-regexp';
 
 const bcrypt = require('bcrypt-nodejs');
 
@@ -143,16 +142,24 @@ userSchema.methods.findMatchingKey = function findMatchingKey(candidateKey, cb)
 };
 
 userSchema.statics.findByMailOrName = function findByMailOrName(email) {
+  const isEmail = email.indexOf('@') > -1;
+  if (isEmail) {
     const query = {
-    $or: [{
-      email: new RegExp(`^${escapeStringRegexp(email)}$`, 'i'),
-    }, {
-      username: new RegExp(`^${escapeStringRegexp(email)}$`, 'i'),
-    }],
+      email: email.toLowerCase()
     };
-  return this.findOne(query).exec();
+    // once emails are all lowercase, won't need to do collation
+    // but maybe it's not even necessary to make all emails lowercase??
+    return this.findOne(query).collation({ locale: 'en', strength: 2 }).exec();
+  }
+  const query = {
+    username: email
+  };
+  return this.findOne(query).collation({ locale: 'en', strength: 2 }).exec();
 };
 
 userSchema.statics.EmailConfirmation = EmailConfirmationStates;
 
+userSchema.index({ username: 1 }, { collation: { locale: 'en', strength: 2 } });
+userSchema.index({ email: 1 }, { collation: { locale: 'en', strength: 2 } });
+
 export default mongoose.model('User', userSchema);