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Tag Google Search results pointing to CloudFlare-protected websites
// ==UserScript==
// @match https://www.google.*/search*
// @name Google Search CloudFlare detector
// @description Tag Google Search results pointing to CloudFlare-protected websites
// @grant none
// @version 1.1.0
// @author KaKi87
// @license GPL-3.0-or-later
// @namespace https://git.kaki87.net/KaKi87/userscripts/src/branch/master/GoogleSearchCloudFlareDetector
// ==/UserScript==
const getIp = host => new Promise(resolve => {
fetch(`https://api.kaki87.net/dns/${host}`)
.then(res => res.json())
.then(res => {
if(res.success)
resolve(res.data.find(entry => entry.type === 'A')['value']);
else
return '0.0.0.0';
})
});
const isIpInCidr = (ip, cidr) => {
// Source : https://gist.github.com/KaKi87/7c3907a1ec03ebc8ecb0294ab7176bce
const [range, bits = 32] = cidr.split('/');
const mask = ~(2 ** (32 - bits) - 1);
const ip4ToInt = ip => ip.split('.').reduce((int, oct) => (int << 8) + parseInt(oct, 10), 0) >>> 0;
return (ip4ToInt(ip) & mask) === (ip4ToInt(range) & mask);
};
const cloudFlareCidrList = [
// Source : https://www.cloudflare.com/ips-v4
'173.245.48.0/20',
'103.21.244.0/22',
'103.22.200.0/22',
'103.31.4.0/22',
'141.101.64.0/18',
'108.162.192.0/18',
'190.93.240.0/20',
'188.114.96.0/20',
'197.234.240.0/22',
'198.41.128.0/17',
'162.158.0.0/15',
'104.16.0.0/12',
'172.64.0.0/13',
'131.0.72.0/22',
];
const isCloudFlareIp = ip => !! cloudFlareCidrList.find(cidr => isIpInCidr(ip, cidr));
const links = [...document.querySelectorAll('a[href*="//"]:not([href^="/"]):not([href*="google."]):not([href*="googleusercontent.com"])')];
(async () => {
for(let i = 0; i < links.length; i++){
const element = links[i];
const title = element.querySelector('h3, div[role="heading"] div');
if(!title) continue;
const ip = await getIp((new URL(element.href)).host);
if(isCloudFlareIp(ip))
title.innerHTML = `<span style="font-weight: bold; color: red;">(CloudFlare)</span> ${title.textContent}`;
}
})();