DrownedMods Base64 Auto Decoder

Auto-decodes base64 strings in posts and makes them clickable

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(У мене вже є менеджер скриптів, дайте мені встановити його!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         DrownedMods Base64 Auto Decoder
// @namespace    https://example.com/drownedmods-base64
// @version      1.2
// @description  Auto-decodes base64 strings in posts and makes them clickable
// @author       Adapted from FMHY with help from Grok.ai
// @license MIT 
// @match        https://forum.drownedmods.org/*
// @grant        none
// @run-at       document-end
// ==/UserScript==

(function() {
    'use strict';

    const base64FullRegex = /^[A-Za-z0-9+/]{40,}(={0,2})?$/;

    function looksLikeUrl(str) {
        str = str.trim();
        return /^(https?:\/\/|magnet:\?|ftp:\/\/)/i.test(str) ||
               /mega\.nz|mediafire\.com|drive\.google\.com|gofile\.io|pixeldrain\.com/i.test(str) ||
               str.endsWith('.torrent') || str.includes('?xt=urn:btih:');
    }

    function processTextNode(node) {
        if (node.nodeType !== Node.TEXT_NODE) return;
        const text = node.textContent.trim();
        if (text.length < 40 || !base64FullRegex.test(text)) return;

        let decoded;
        try {
            decoded = atob(text).trim();
        } catch (e) {
            return;
        }

        if (!looksLikeUrl(decoded) && !decoded.includes('http')) return;

        const fragment = document.createDocumentFragment();

        if (!decoded.includes('\n')) {
            const a = document.createElement('a');
            a.href = decoded;
            a.textContent = decoded;
            a.target = '_blank';
            a.rel = 'noopener noreferrer';
            a.style.color = '#00aaff';
            a.style.fontWeight = 'bold';
            fragment.appendChild(document.createTextNode('→ '));
            fragment.appendChild(a);
        } else {
            decoded.split('\n').forEach((line, idx, arr) => {
                const trimmed = line.trim();
                if (!trimmed) {
                    fragment.appendChild(document.createElement('br'));
                    return;
                }
                if (looksLikeUrl(trimmed)) {
                    const a = document.createElement('a');
                    a.href = trimmed;
                    a.textContent = trimmed;
                    a.target = '_blank';
                    a.rel = 'noopener noreferrer';
                    fragment.appendChild(a);
                } else {
                    fragment.appendChild(document.createTextNode(trimmed));
                }
                if (idx < arr.length - 1) fragment.appendChild(document.createElement('br'));
            });
        }

        node.parentNode.replaceChild(fragment, node);
    }

    function walk(node) {
        if (!node) return;

        if (node.nodeType === Node.ELEMENT_NODE &&
            (node.tagName === 'PRE' || node.tagName === 'CODE' ||
             node.classList.contains('message-body') ||
             node.classList.contains('post-body') ||
             node.classList.contains('message-content') ||
             node.classList.contains('content') ||
             node.classList.contains('post-message') ||
             node.tagName === 'BLOCKQUOTE' ||
             node.tagName === 'DIV' || node.tagName === 'P')) {
            Array.from(node.childNodes).forEach(walk);
        }

        if (node.nodeType === Node.TEXT_NODE) {
            processTextNode(node);
        }
    }

    walk(document.body);

    const observer = new MutationObserver(muts => {
        muts.forEach(mut => {
            mut.addedNodes.forEach(node => {
                if (node.nodeType === Node.ELEMENT_NODE) walk(node);
            });
        });
    });

    observer.observe(document.body, { childList: true, subtree: true });

    console.log('[DrownedMods Base64 Decoder] Running – looking for encoded links');
})();