You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
35 lines
1.1 KiB
35 lines
1.1 KiB
4 years ago
|
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);
|