/** * GNU LibreJS - A browser add-on to block nonfree nontrivial JavaScript. * * * Copyright (C) 2017 Nathan Nichols, Loic J. Duros, Nik Nyby * Copyright (C) 2018 Giorgio Maone * Copyright (C) 2022 Yuchen Pei * * This file is part of GNU LibreJS. * * GNU LibreJS is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * GNU LibreJS is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with GNU LibreJS. If not, see . */ // TO TEST THE CONTACT FINDER: // - open the manifest.json // - add a comma after the closing bracket of the key "background" // - Copy and paste this after it: /* "content_scripts": [{ "matches": [""], "js": ["/content/contactFinder.js"], "css": ["/content/contactFinder.css"] }] */ // Now, the contact finder will load on every page and you can test it where ever you want. //********************************************************************************************* function debug(format, ...args) { console.debug(`LibreJS - ${format}`, ...args); } debug("Injecting contact finder in %s", document.URL); /** * contactSearchStrings * Contains arrays of strings classified by language * and by degree of certainty. */ function contactFrags() { return [ // de { 'certain': [ '^[\\s]*Kontakt os[\\s]*$', '^[\\s]*Email Os[\\s]*$', '^[\\s]*Kontakt[\\s]*$' ], 'probable': ['^[\\s]Kontakt', '^[\\s]*Email'], 'uncertain': [ '^[\\s]*Om Us', '^[\\s]*Om', 'Hvem vi er' ] }, // en { 'certain': [ '^[\\s]*Contact Us[\\s]*$', '^[\\s]*Email Us[\\s]*$', '^[\\s]*Contact[\\s]*$', '^[\\s]*Feedback[\\s]*$', '^[\\s]*Web.?site Feedback[\\s]*$' ], 'probable': ['^[\\s]*Contact', '^[\\s]*Email'], 'uncertain': [ '^[\\s]*About Us', '^[\\s]*About', 'Who we are', 'Who I am', 'Company Info', 'Customer Service' ] }, // es { 'certain': [ '^[\\s]*contáctenos[\\s]*$', '^[\\s]*Email[\\s]*$' ], 'probable': ['^[\\s]contáctenos', '^[\\s]*Email'], 'uncertain': [ 'Acerca de nosotros' ] }, // fr { 'certain': [ '^[\\s]*Contactez nous[\\s]*$', '^[\\s]*(Nous )?contacter[\\s]*$', '^[\\s]*Email[\\s]*$', '^[\\s]*Contact[\\s]*$', '^[\\s]*Commentaires[\\s]*$' ], 'probable': ['^[\\s]Contact', '^[\\s]*Email'], 'uncertain': [ '^[\\s]*(A|À) propos', 'Qui nous sommes', 'Qui suis(-| )?je', 'Info', 'Service Client(e|è)le' ] } ]; } function contactLinkLimit() { return 5; } // Taken from http://emailregex.com/ function emailRegex() { return new RegExp(/(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])/g); } //********************************************************************************************* function findMatch(link, frag) { const result = (link.innerText.match(new RegExp(frag, "g")) || []).filter(x => typeof x == "string"); if (result.length) return true; return false; } /** * Tests all links on the page for regexes under a certain certainty level. * * Will return either all regex matches from the selected certainty level, * up to a limit. * * certainty can be "certain" > "probable" > "uncertain" */ function attempt(certainty, limit) { // There needs to be some kind of max so that people can't troll by for example leaving a comment with a bunch of emails // to cause LibreJS users to slow down. const matches = []; const links = Array.from(document.links).filter(link => (typeof (link.innerText) === "string" || typeof (link.href) === "string")); for (const link of links) { for (const byLevel of contactFrags()) { for (const frag of byLevel[certainty]) { findMatch(link, frag) && matches.push(link); if (matches.length >= limit) return { 'fail': false, 'result': [link] }; } } } return { "fail": matches.length === 0, "result": matches }; } /** * "LibreJS detects contact pages and email addresses that are likely to be owned by the * maintainer of the site." */ function findContacts() { for (const type of ["certain", "probable", "uncertain"]) { const attempted = attempt(type, contactLinkLimit()); if (!attempted["fail"]) { return [type, attempted["result"]]; } } return null; } function createWidget(id, tag, parent = document.body) { const oldWidget = document.getElementById(id); if (oldWidget) oldWidget.remove(); const widget = parent.appendChild(document.createElement(tag)); widget.id = id; return widget; } /** * * Creates the contact finder / complain UI as a semi-transparent overlay * */ function main() { const overlay = createWidget("_LibreJS_overlay", "div"); const frame = createWidget("_LibreJS_frame", "iframe"); const close = () => { frame.remove(); overlay.remove(); }; // Clicking the "outer area" closes the dialog. overlay.addEventListener("click", close); const initFrame = prefs => { debug("initFrame"); const contentDoc = frame.contentWindow.document; const addText = (text, tag, wherein) => { el = wherein.appendChild(contentDoc.createElement(tag)); el.textContent = text; } // Header of the dialog const { body } = contentDoc; body.id = "_LibreJS_dialog"; addText('LibreJS Complaint', 'h1', body); const closeButton = body.appendChild(contentDoc.createElement('button')); closeButton.classList.toggle('close', true); closeButton.textContent = 'x'; closeButton.addEventListener("click", close); const content = body.appendChild(contentDoc.createElement("div")); content.id = "content"; // Add list of contact links const res = findContacts(); if (!res) { content.classList.toggle("_LibreJS_fail", true); addText('Could not guess any contact page for this site.', 'div', content); } else { addText('Contact info guessed for this site', 'h3', content); addText(res[0] + ':', 'span', content); const list = content.appendChild(contentDoc.createElement("ul")); for (const link of res[1]) { const a = contentDoc.createElement("a"); a.href = link.href; a.textContent = link.textContent; list.appendChild(contentDoc.createElement("li")).appendChild(a); } } // Add list of emails const emails = (document.documentElement.textContent.match(emailRegex()) || []).filter(e => !!e); if (emails.length) { addText("Possible email addresses:", 'h5', content); const list = content.appendChild(contentDoc.createElement("ul")); for (const recipient of emails.slice(0, 10)) { const a = contentDoc.createElement("a"); a.href = `mailto:${recipient}?subject=${encodeURIComponent(prefs["pref_subject"]) }&body=${encodeURIComponent(prefs["pref_body"]) }`; a.textContent = recipient; list.appendChild(contentDoc.createElement("li")).appendChild(a); } } // contentDoc.querySelectorAll(".close, a").forEach(makeCloser); debug("frame initialized"); } frame.addEventListener("load", _ => { debug("frame loaded"); browser.runtime.connect({ name: "contact_finder" }).onMessage.addListener(initFrame); }); } main();