Add image file type validation

.gitignore

@@ -16,4 +16,5 @@ photo-metadata-updater/
 photo-metadata-updater.zip
 build.sh
 readme.txt
-exiftool/
+exiftool/
+releases/

README.md

@@ -15,7 +15,7 @@ Node.js application with a Vue frontend. Runs on Mac/Unix systems, not tested on
 
 # Recommended Dependency
 
-In order to take advantage of timezone and map features, you need a [Bing maps API key](https://docs.microsoft.com/en-us/bingmaps/getting-started/bing-maps-dev-center-help/getting-a-bing-maps-key). Go to the link to get one, then save it in the app after startup.
+In order to take advantage of timezone and map features, you need a [Bing maps API key](https://docs.microsoft.com/en-us/bingmaps/getting-started/bing-maps-dev-center-help/getting-a-bing-maps-key). 
 
 # Run App Guide
 

photo-metadata-updater.js

@@ -31,7 +31,8 @@ if (bingApiKey === 'YOUR_BING_API_KEY') {
 app.use(bodyParser.urlencoded({ extended: false }));
 app.use(bodyParser.json());
 app.use(express.static(path.join(__dirname, './public')));
-app.use('/api', require('./src/middleware/routes'));
+app.use('/api', require('./src/middleware/api-routes'));
+app.use('/img', require('./src/middleware/image-validator'));
 app.use('/img', require('./src/middleware/image-folder'));
 
 server = app.listen(port, () => {

src/middleware/image-folder.js

@@ -1,9 +1,9 @@
 var express = require('express');
 
-var imgFolder = createImgFolder('/Users/testing/photo-metadata-updater/photos');
+var imgFolder = createImgFolder();
 
-function createImgFolder (path) {
-  var static = express.static(path);
+function createImgFolder() {
+  var static = express.static((process.pkg) ? process.cwd() : __dirname);
 
   const imgFolder = function (req, res, next) {
     return static(req, res, next);

src/middleware/image-validator.js

@@ -0,0 +1,9 @@
+var router = require('express').Router();
+
+const allowedTypesRegex = /^.*\.(jpg|JPG|jpeg|JPEG|png|PNG)$/;
+
+router.get('/*', function (req, res, next) {
+  (allowedTypesRegex.test(req.url)) ? next() : res.status(400).send('Invalid photo extenstion type');
+});
+
+module.exports = router;