From 49d97f6108b2fdccc4a33e05d4cb6ef67c045e0c Mon Sep 17 00:00:00 2001
From: Himanshu Sanecha <52252631+himanshusanecha@users.noreply.github.com>
Date: Fri, 25 Mar 2022 12:27:08 +0530
Subject: [PATCH] fix(#83): add method to verify if alias being use is
 blacklisted or not. (#87)

---
 backend/controllers/minify.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/backend/controllers/minify.js b/backend/controllers/minify.js
index 5a31431..9f76383 100644
--- a/backend/controllers/minify.js
+++ b/backend/controllers/minify.js
@@ -2,6 +2,12 @@ const Minfy = require('../models/minifed_urls')
 const base_url = 'https://minfy.xyz/'
 const { nanoid } = require('nanoid')
 
+const blackListedAliases = ['404','dashboard','qr','credits','github','admin','geo','all','me','go','upload','download','link','about','tos','faqs']
+
+function verifyAlias(alias) {
+   const boolean = blackListedAliases.find(element => element===alias);
+   return boolean;
+}
 module.exports.getAllData = async (req, res) => {
    Minfy.find({})
       .then((data) => {
@@ -111,6 +117,12 @@ module.exports.updateUrlData = async (req, res) => {
 
 module.exports.addURLAuthed = async (req, res) => {
    const { alias, originalUrl } = req.body
+   if(verifyAlias(alias))
+   {
+      res.sendStatus(500);
+      throw new Error('This alias cannot be used, try some another.');
+   }
+
    var createdBy = req.user.data.email
    // console.log(req.user);
    const minifiedUrl = base_url + alias