Postman Pro Blog Snippets

hmac.js

function get_path() {
  var resolvedUrl = request.url.replace(/{{(\w*)}}/g,function(str,key) {return getFromEnv(key)});
  return /.+?\:\/\/.+?(\/.+?)(?:# \? $)/.exec(resolvedUrl)[1]
}
function auth_string(version, lookup, signature) {
  return // a secret formula
}
function getFromEnv(key) {
  return environment[key] ? environment[key] : postman.getGlobalVariable(key);
}
var date = new Date().toISOString();
var message = // a secret formula
var secret = getFromEnv(“hmac_secret”);
if (secret) {
  var hmacKey = getFromEnv(“hmac_key”);
  var version = “BC1-HMAC-SHA256”;
  var hash = CryptoJS.HmacSHA256(message, secret);
  var signature = CryptoJS.enc.Base64.stringify(hash);
  var authorization = auth_string(version, hmacKey, signature)
  postman.setEnvironmentVariable(“authorization”, authorization);
  postman.setEnvironmentVariable(“date”, date);
} else {
  console.log(“Environment variable \”hmac_secret\” must be set.”)
}