// ==UserScript==
// @name         DLE links decoder
// @namespace    lainscripts_dle_links_decoder
// @version      1.3
// @description  Прямые ссылки на сайтах с движком DataLife Engine (DLE)
// @author       lainverse
// @match        *://*/*
// @grant        none
// ==/UserScript==
// Script based on a similar script by raletag:
// https://greasyfork.org/en/scripts/22290-Прямые-ссылки-в-dle
(function() {
'use strict';
var impCodes = '%3B%2C%2F%3F%3A%40%26%3D%2B%24%23',
impRegex = new RegExp((impCodes.replace(/%/g,'|%').replace('|','')), 'gi'),
impDecoded = decodeURIComponent(impCodes),
impReplacer = function(ch) {
return impDecoded[impCodes.indexOf(ch.toUpperCase())/3];
};
function decodeImportant(text) {
return text.replace(impRegex, impReplacer);
}
function linkHandler(e){
var link = e.target, url = link.href, url64;
// Detach event from a link since we don't need to parse it more than once
link.removeEventListener('mouseenter', linkHandler, false);
// Check if it's one of the DLE-redirected links and exit if not
url64 = (url.match(/([?&]url=|\/leech_out\.php\?.:)([^&]+)(&|$)/i)||[])[2];
if (!url64) {
return true;
}
// Try to decode base64 encoded link, if fails then take it as-is
try {
url64 = decodeURIComponent(url64);
url = window.atob(url64);
} catch(ignore) {
url = url64;
}
// Decode important %-encoded parts of a link (browser should handle the rest)
url = decodeImportant(url);
// Replace target with decoded link and make it open in a new tab by default
console.log('Replaced ' + link.href + ' with ' + url);
link.href = url;
link.target = '_blank';
return true;
}
// Get a list of all link in a given object and attach mouseover event to it
function attachEventToLinks(root) {
var links = root.querySelectorAll('a[href]'),
i = links.length;
while(i--) {
links[i].addEventListener('mouseenter', linkHandler, false);
}
}
// Parse all existing links
attachEventToLinks(document);
// Monitor changes to the document structure and attach events to all new links
var o = new MutationObserver(function(ms){
ms.forEach(function(m){
m.addedNodes.forEach(function(n){
if (n.nodeType !== Node.ELEMENT_NODE) {
return; // parse only document elements and skip the rest
}
if (n.href) {
n.addEventListener('mouseenter', linkHandler, false);
return; // if node is a link attach event and exit since we
// don't want to parse link's content (links within links?!)
}
attachEventToLinks(n);
});
});
});
o.observe(document, {childList: true, subtree: true});
})();