safari_affiliate.js

var ignoredTabs = {};
var ignoredHosts = {};
var requestAllowance = 10000;
var standdownPeriod = 3600000;

// only a partial list (we currently have a few dozen).
var affiliateHosts = [
  ".ojrq.net",
  ".evyy.net",
  "affiliate.rakuten.com",
  "linksynergy"
];

safari.application.addEventListener("beforeNavigate", function (e) {

  // check each navigation event to see if it is from an affiliate channel
  // if it is then store the tab the redirected happened in with the time
  // till it expires (we no longer consider the page that you landed on having
  // originated from an affiliate source)
  if(isAffiliateTraffic(e.url)) {
    ignoredTabs[e.target] = e.timeStamp + requestAllowance;
  }
});

safari.application.addEventListener("navigate", function(e) {

  // check that the page you landed on is not an affiliate link or came
  // through a redirect chain that contained an affiliate link.
  if(ignoredTabs[e.target] || isAffiliateTraffic(e.url)) {
    ignoredTabs[e.target] = e.timeStamp + requestAllowance;

    // ignore the host for a period of time if it came through an affiliate
    // redirect chain.
    var host = new URL(e.url).host;
    ignoredHosts[host] = e.timeStamp + standdownPeriod;
  }

  var tabIgnored = ignoredTabs[e.target] && ignoredTabs[e.target] > e.timeStamp ? true : false;
  var hostIgnored = ignoredHosts[host] && ignoredHosts[host] > e.timeStamp ? true : false;

  if(!tabIgnored && !hostIgnored) {
    // logic here
  }
});

function isAffiliateTraffic(url) {
  var parsedURL = new URL(url, true);

  // check for afsrc and u1 parameters these are an industry standard.
  if (parsedURL.query.afsrc || parsedURL.query.u1) {
    return true;
  } else {

    // check paid_links config file to see if host name contains a match
    // can be a full or partial host name or just a keyword/phrase within it
    for (var i = 0; i < affiliateHosts.length; i++) {
      if (parsedURL.host.indexOf(affiliateHosts[i]) >= 0) {
        return true;
      }
    }
  }

  return false;
}