fix: convert email to lower case to avoid case sensitivity

re #627

Signed-off-by: Pranav C <pranavxc@gmail.com>

packages/nocodb/src/lib/noco/rest/RestAuthCtrl.ts

@@ -784,13 +784,21 @@ export default class RestAuthCtrl {
 
   protected async signup(req, res, next): Promise<any> {
     try {
-      const { email, firstname, lastname, token, ignore_subscribe } = req.body;
+      const {
+        email: _email,
+        firstname,
+        lastname,
+        token,
+        ignore_subscribe
+      } = req.body;
       let { password } = req.body;
 
-      if (!isEmail(email)) {
+      if (!isEmail(_email)) {
         return next(new Error(`Invalid email`));
       }
 
+      const email = _email.toLowerCase();
+
       let user = await this.users
         .where({
           email
@@ -928,11 +936,13 @@ export default class RestAuthCtrl {
   }
 
   protected async passwordForgot(req, res, next): Promise<any> {
-    const email = req.body.email;
-    if (!email) {
+    const _email = req.body.email;
+    if (!_email) {
       return next(new Error('Please enter your email address.'));
     }
 
+    const email = _email.toLowerCase();
+
     const user = await this.users.where({ email }).first();
     if (!user) {
       return next(new Error('This email is not registered with us.'));
@@ -1135,12 +1145,12 @@ export default class RestAuthCtrl {
     //   return next(new Error('SMTP config is not found'));
     // }
 
-    const email = req.body.email;
+    const _email = req.body.email;
 
-    if (!email || !validator.isEmail(email)) {
+    if (!_email || !validator.isEmail(_email)) {
       return next(new Error('Invalid email address'));
     }
-
+    const email = _email.toLowerCase();
     // todo: handle roles which contains super
     if (
       !req.session?.passport?.user?.roles?.owner &&

packages/nocodb/src/lib/noco/rest/RestAuthCtrlEE.ts

@@ -10,7 +10,10 @@ import RestAuthCtrl from './RestAuthCtrl';
 
 export default class RestAuthCtrlEE extends RestAuthCtrl {
   protected async addAdmin(req, res, next): Promise<any> {
-    const emails = (req.body.email || '').split(/\s*,\s*/).map(v => v.trim());
+    const emails = (req.body.email || '')
+      .toLowerCase()
+      .split(/\s*,\s*/)
+      .map(v => v.trim());
 
     // check for invalid emails
     const invalidEmails = emails.filter(v => !validator.isEmail(v));