Remove link-click tracking from reddit
// ==UserScript==
// @name Reddit Link Hijack Remover
// @author jmesmon
// @description Remove link-click tracking from reddit
// @include *://reddit.com/*
// @include *://*.reddit.com/*
// @grant none
// @namespace https://github.com/jmesmon
// @license AGPL3
// @supportURL https://github.com/jmesmon/greasy/issues
// @run-at document-end
// @version 0.0.1.20210226040629
// ==/UserScript==
// TODO: consider if run-at document-start is useful, and how we can
// effectively hook urls as they show up in that case (right now it doesn't
// work).
(function () {
'use strict';
function cl(ac) {
var a = ac.querySelectorAll('a.outbound');
var ct_out = 0, ct_aff = 0, ct = 0, ct_in = 0;
for (var i = 0; i < a.length; i++) {
/*
// This is reddit's function to determine the url, which is stored in `o`.
// It then hooks window unload to call sendBeacon with the url in `o` or
// modifies the href attribute (if sendBeacon is disabled in config or unsupported by the browser).
function o(e) {
var t = $(e),
r = Date.now(),
o;
return t.attr('data-inbound-url')
? o = t.attr('data-inbound-url')
: !n && t.attr('data-outbound-expiration') > r && (o = t.attr('data-outbound-url')),
o && (i ? s = o : e.href = o),
!0
}
*/
// Some minimal counting so we can tell things are working
if (a[i].getAttribute('data-inbound-url')) {
ct_in++;
}
if (a[i].getAttribute('data-affiliate-url')) {
ct_aff++;
}
if (a[i].getAttribute('data-outbound-url') || a[i].getAttribute('data-outbound-expiration')) {
ct_out++;
}
// Goals:
// - make sure `o` stays undefined.
// - avoid ever getting this function called
// Removing all the relevent attributes gets us both of those
// Unclear what the purpose of these is, but they are being used to
// re-write urls (and trigger entry to the fn above), so remove.
a[i].removeAttribute('data-inbound-url');
// Doesn't appear that reddit is injecting these affiliate links
// anymore, but no reason to remove this
a[i].removeAttribute('data-affiliate-url');
// We don't actually need to remove this, but it does short circuit
// the condition quicker & cleans up the html, so do it.
a[i].removeAttribute('data-outbound-expiration');
a[i].removeAttribute('data-outbound-url');
a[i].classList.remove('outbound');
ct++;
}
console.log('hijacks removed: outbound ' + ct_out + ', inbound ' + ct_in + ', affiliate ' + ct_aff + ', examined ' + ct);
}
var obs = new MutationObserver(function (r, self) {
for (var i = 0; i < r.length; i++) {
var ad = r[i].addedNodes;
for (var j = 0; j < ad.length; j++) {
var n = ad[j];
cl(n);
}
}
});
obs.observe(document, {
childList: true,
subtree: true
});
// TODO: consider patching out window.navigator.sendBeacon (which reddit only uses for this link tracking)
// TODO: consider blocking the recent_srs cookie used for tracking
cl(document);
}) ();