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Added queryParamsOnly option to create wildcard Cloudfront signed URL… #37

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Added queryParamsOnly option to create wildcard Cloudfront signed URL… #37

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42 changes: 25 additions & 17 deletions lib/cloudfrontUtil.js
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Original file line number Diff line number Diff line change
Expand Up @@ -12,11 +12,12 @@ var CannedPolicy = require('./CannedPolicy');
/**
* Build an AWS signed URL.
*
* @param {String} CloudFront resource URL
* @param {Object} Signature parameters
* @param {String} cfUrl CloudFront resource URL
* @param {Object} params Signature parameters
* @param {boolean} queryParamsOnly Remove resource URL from signed Cloudfront URL
* @return {String} Signed CloudFront URL
*/
function getSignedUrl(cfUrl, params) {
function getSignedUrl(cfUrl, params, queryParamsOnly) {
var privateKey = _getPrivateKey(params);
var policy = _createPolicy(
cfUrl, _getExpireTime(params), _getIpRange(params));
Expand All @@ -36,16 +37,23 @@ function getSignedUrl(cfUrl, params) {
'Key-Pair-Id': params.keypairId
});

var formattedUrl = parsedUrl.format();

// Remove everything but query parameters
if (queryParamsOnly) {
formattedUrl = formattedUrl.substr(cfUrl.length);
}

// Return a formatted URL string with signature.
return parsedUrl.format();
return formattedUrl;
}

/**
* Build an AWS signed RTMP URL assuming your distribution supports this.
*
* @param {String} Cloudfront domain
* @param {String} S3 key
* @param {Object} Signature parameters
* @param {String} domainname Cloudfront domain
* @param {String} s3key S3 key
* @param {Object} params Signature parameters
* @return {Object} Cloudfront server path and stream name with RTMP formatting
*/
function getSignedRTMPUrl(domainname, s3key, params) {
Expand Down Expand Up @@ -73,11 +81,11 @@ function getSignedRTMPUrl(domainname, s3key, params) {
/**
* Build list of cookies for the specified resource
*
* @param {String} CloudFront resource URL
* @param {Object} Signature parameters
* @return {String} List of CloudFront cookies
* @param {String} cfUrl CloudFront resource URL
* @param {Object} params Signature parameters
* @return {Object} List of CloudFront cookies
*/
function getSignedCookies(cfUrl, params){
function getSignedCookies(cfUrl, params) {
var privateKey = _getPrivateKey(params);
var policy = _createPolicy(
cfUrl, _getExpireTime(params), _getIpRange(params));
Expand All @@ -102,7 +110,7 @@ function getSignedCookies(cfUrl, params){
* For more information, see
* http://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/private-content-creating-signed-url-canned-policy.html
*
* @param {String}: Base64 encoded string
* @param {String} str Base64 encoded string
*/
function normalizeBase64(str) {
return str
Expand Down Expand Up @@ -131,9 +139,9 @@ function normalizeSignature(sig) {
* Create an AWS policy.
*
* @private
* @param {string} CloudFront resource URL
* @param {Number|Moment|Date} URL expiration time
* @param {string} Source IP range in CIDER notation
* @param {string} cfUrl CloudFront resource URL
* @param {Number|moment|Date} expireTime URL expiration time
* @param {string} ipRange Source IP range in CIDER notation
* @returns {Object} AWS policy object
*/
function _createPolicy(cfUrl, expireTime, ipRange) {
Expand All @@ -148,8 +156,8 @@ function _createPolicy(cfUrl, expireTime, ipRange) {
* Create a policy signature.
*
* @private
* @param {Object} AWS policy
* @param {string} private key string for signature
* @param {Object} policy AWS policy
* @param {string} privateKey private key string for signature
* @returns {string} Base64 encoded signature
*/
function _createPolicySignature(policy, privateKey) {
Expand Down