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/* SPDX-License-Identifier: CC0-1.0
*
* Use Hacktcha on Stack Exchange registration page.
*
* Copyright (C) 2022 Wojtek Kosior
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the CC0 1.0 Universal License as published by
* the Creative Commons Corporation.
*
* This program 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
* CC0 1.0 Universal License for more details.
*/
/* Use with https://meta.stackexchange.com/users/signup */
/* Load captcha-parent.js first. */
(async () => {
const captcha_div = document.createElement("div");
const submit_but = document.getElementById("submit-button");
const token_field = document.createElement("textarea");
/*
* Let's remove <noscript> tag with the original reCAPTCHA iframe and an
* unnecessary button.
*/
document.querySelector("#no-captcha-here + *").remove();
for (const elem of [...captcha_div.childNodes])
elem.remove();
token_field.name = "g-recaptcha-response";
token_field.style.display = "none";
document.getElementById("no-captcha-here").after(token_field);
token_field.after(captcha_div);
/*
* The reCAPTCHA site key is present in 2 places: in a script and in fallback iframe's
* URL. Let's use the former as the source for now.
*/
let site_key;
const site_key_regex = /['"]sitekey['"]\s*:\s*['"]([a-zA-Z0-9-]+)['"]/;
for (const script of document.scripts) {
match = site_key_regex.exec(script.textContent);
if (match !== null)
site_key = match[1];
}
if (site_key === null) {
console.error("Could not extract site key :(");
return;
}
submit_but.setAttribute("disabled", "");
for await (const token of HCHA.run(captcha_div, site_key)) {
if (token === null) {
submit_but.setAttribute("disabled", "");
} else {
token_field.value = token;
submit_but.removeAttribute("disabled");
}
}
})();
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