darbelaez · July 11, 2024 13:17 · lvthillo · Nov 21, 2019 · darbelaez · Nov 21, 2019
diff --git a/aws-signed-cookie-from-signed-url.js b/aws-signed-cookie-from-signed-url.js
 /**
 * aws-signed-cookie-from-signed-url.js
 * Include this file in the landing page of the CloudFront assets where a signed url (from another domain) would direct users to
 * If the url is signed (i.e. has Policy, Signature and Key-Pair-Id params) it will create cookies for those attributes based on AWS rules
 * This will allow the internal navigation of CloudFront assets without the need of signed urls for each asset
 */

 /**
 *
 */
 function getUrlVars() {
 	var vars = {};
 	var parts = window.location.href.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m,key,value) {
 		vars[key] = value;
 	});
 	return vars;
 }

 /**
 *
 * @param parameter
 * @param defaultvalue
 * @returns {*}
 */
 function getUrlParam(parameter, defaultvalue){
 	var urlparameter = defaultvalue;
 	if(window.location.href.indexOf(parameter) > -1){
 		urlparameter = getUrlVars()[parameter];
 	}
 	return urlparameter;
 }

 /**
 *
 * @param cname
 * @param cvalue
 * @param exdays
 */
 function setCookie(cname, cvalue, exdays) {
 	var d = new Date();
 	d.setTime(d.getTime() + (exdays*24*60*60*1000));
 	var expires = "expires="+ d.toUTCString();
 	document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
 }

 var Policy = getUrlParam('Policy', '');
 var Signature = getUrlParam('Signature', '');
 var KeyPairId = getUrlParam('Key-Pair-Id', '');

 if (Policy != '' && Signature != '' && KeyPairId != '') {
 	//delete cookie first
 	setCookie('CloudFront-Policy', '', 0);
 	setCookie('CloudFront-Signature', '', 0);
 	setCookie('CloudFront-Key-Pair-Id', '', 0);

 	//set the cookie
 	setCookie('CloudFront-Policy', Policy, 1);
 	setCookie('CloudFront-Signature', Signature, 1);
 	setCookie('CloudFront-Key-Pair-Id', KeyPairId, 1);
 }