Remove dependency express-fileupload

server/libs/expressFileupload/isEligibleRequest.js

@@ -0,0 +1,34 @@
+const ACCEPTABLE_CONTENT_TYPE = /^(multipart\/.+);(.*)$/i;
+const UNACCEPTABLE_METHODS = ['GET', 'HEAD'];
+
+/**
+ * Ensures the request contains a content body
+ * @param  {Object}  req Express req object
+ * @returns {Boolean}
+ */
+const hasBody = (req) => {
+  return ('transfer-encoding' in req.headers) ||
+    ('content-length' in req.headers && req.headers['content-length'] !== '0');
+};
+
+/**
+ * Ensures the request is not using a non-compliant multipart method
+ * such as GET or HEAD
+ * @param  {Object}  req Express req object
+ * @returns {Boolean}
+ */
+const hasAcceptableMethod = req => !UNACCEPTABLE_METHODS.includes(req.method);
+
+/**
+ * Ensures that only multipart requests are processed by express-fileupload
+ * @param  {Object}  req Express req object
+ * @returns {Boolean}
+ */
+const hasAcceptableContentType = req => ACCEPTABLE_CONTENT_TYPE.test(req.headers['content-type']);
+
+/**
+ * Ensures that the request in question is eligible for file uploads
+ * @param {Object} req Express req object
+ * @returns {Boolean}
+ */
+module.exports = req => hasBody(req) && hasAcceptableMethod(req) && hasAcceptableContentType(req);