File dump from old repo

functions.js

@@ -0,0 +1,35 @@
+const regexInt = RegExp(/^[1-9]\d*$/);
+const regexXSS = RegExp(/<[^>]*script/);
+
+// Check if int for param validation
+const paramIntCheck = (req, res, next, input) => {
+    try {
+        if (regexInt.test(input)) {
+            next();
+        } else {
+            throw new Error;
+        }
+    } catch (err) {
+        res.status(err.code).send(JSON.stringify({
+            "message": "Le paramètre doit être un entier non-nul.",
+            "code": 403,
+        })
+        );
+    }
+};
+
+// Check if script injection attempt
+const isXSSAttempt = (string) => {
+    return regexXSS.test(string);
+};
+
+// Check if object is null
+const isEmptyObject = (obj) => {
+    return (Object.keys(obj).length === 0 && obj.constructor === Object);
+};
+
+module.exports = {
+    paramIntCheck,
+    isXSSAttempt,
+    isEmptyObject
+};