bypass cloudflare using fetch nodejs

bypass_cloudflare_fetch.js

/*

Rovelli Gianmaria @2019

This script only show the cookie to bypass
Good job :P

*/

const fetch = require("node-fetch");

var url = "https://ilgeniodellostreaming.app/";

var _cfduid;
var cf_clearance;

returnCookie().then(function(done) {
	console.log(done);
});

function returnCookie(){
	var promise = new Promise(function(resolve, reject){
		getCookie();
		var show = setInterval(() =>{
			if(cf_clearance != undefined) {
				clearInterval(show);
				//console.log(_cfduid + ";" + cf_clearance);
				resolve (_cfduid + ";" + cf_clearance);
			}
		},10);
	});

	return promise;
}

async function getCookie() {
	const cookie = await (await (fetch(url)
	.then(data => {
		data.headers.forEach(function(val, key) { 
			if(key == "set-cookie")
				_cfduid = val;
		});
		
		try{
			_cfduid = _cfduid.substr(0, _cfduid.indexOf(';'));
		}catch(e){
			console.log(e + " -> " + data.headers);
		}
		//console.log(_cfduid);
		return data.text();
	})
	.then((response) => {
		
		setTimeout(async () => {
	
			var link = solveChallenge(response, url);
			//console.log(link);
			const cookie2 = await (await (fetch(link, {
				method : 'GET',
				redirect: 'manual',
				headers : {
					'cookie' : _cfduid
				}
			}).then((data2) => {
				//console.log(data2.headers);
				data2.headers.forEach(function(val, key) { 
					if(key == "set-cookie")
						cf_clearance = val;
				});
	
				try{
					cf_clearance = cf_clearance.substr(0, cf_clearance.indexOf(';'));
				}catch(e){
					console.log(e + " -> " + data2.headers);
				}
				//console.log(cf_clearance);
	
				//console.log(_cfduid + ";" + cf_clearance);
				return (_cfduid + ";" + cf_clearance);
			})
			));
		}, 6000);
	})
	));
}


function solveChallenge(body, url) {
	var host = url;
	var r = host.match(/https?:\/\//)[0];
	host = host.substr(r.length);
	host = host.substr(0,host.length-1);

	var challenge = body.match(/name="jschl_vc" value="(\w+)"/);
	var jsChlVc;
	var answerUrl;

	jsChlVc = challenge[1];

	challenge = body.match(/getElementById\('cf-content'\)[\s\S]+?setTimeout.+?\r?\n([\s\S]+?a\.value =.+?)\r?\n/i);

	challenge_pass = body.match(/name="pass" value="(.+?)"/)[1];

	challenge = challenge[1];

	challenge = challenge.replace(/a\.value =(.+?) \+ .+?;/i, '$1');

	challenge = challenge.replace(/\s{3,}[a-z](?: = |\.).+/g, '');
	challenge = challenge.replace(/'; \d+'/g, '');

	var answer = (eval(challenge) + host.length);

	answerUrl = url + '/cdn-cgi/l/chk_jschl?jschl_vc=' + jsChlVc + '&pass=' + challenge_pass + '&jschl_answer=' + answer;
	return answerUrl;
}