Freebox OS wake on lan script

fbxos-wol.js

let fbx_ip = "192.168.1.254";
let pass = "XXXXXXXXXXXX";
let mac = "00:11:22:33:44:55";
let crypto = require("crypto");

function getchallenge(challengeTable) {
  var s = "", i;
  for (i in challengeTable) {
	s += "" + eval(challengeTable[i]);
  }
  return s;
}

function sha1(data) {
	var sum = crypto.createHash("sha1");
	sum.update(data);
	return sum.digest("hex");
}

function hmacsha1(data, key) {
	var hmac = crypto.createHmac("sha1", key);
	hmac.update(data);
	return hmac.digest("hex");
}

async function login() {
	let response = await fetch("http://" + fbx_ip + "/api/latest/login/?_=" + Date.now().toString(), {
		method: "GET",
		headers: {
			"X-FBX-FREEBOX0S": "1"
		}
	});
	let json = await response.json();
	if (json.logged_in) return;
	
	challenge = getchallenge(json.result.challenge);

	password_salt = json.result.password_salt;

	let h_pass = sha1(password_salt + pass);
	let hash = hmacsha1(challenge, h_pass.toString());
	response = await fetch("http://" + fbx_ip + "/api/latest/login/", {
		method: "POST",
		headers: {
			"X-FBX-FREEBOX0S": "1",
	  		"Content-Type": "application/x-www-form-urlencoded"
		},
		body: new URLSearchParams({
			"password": hash
		})
	});
	json = await response.json();
	let cookie = response.headers.getSetCookie()[0];
	if (!json.success) return false; 
	response = await fetch("http://" + fbx_ip + "/api/latest/login/", {
		method: "GET",
		headers: {
			"X-FBX-FREEBOX0S": "1",
			cookie: cookie
		}
	});
	json = await response.json();
	if (json.result.logged_in) return cookie;
	return false;
}
async function wake() {
	let cookie = await login();
	const response = await fetch("http://" + fbx_ip + "/api/latest/lan/wol/pub/", {
		"headers": {
			cookie: cookie,
			"X-Fbx-App-Id": "fr.freebox.mafreebox",
			"X-Fbx-Freebox0S": "1",
			"Content-Type": "application/json",
		},
		"body": JSON.stringify({mac: mac, password: ""}),
		"method": "POST",
	})
	let json = await response.json();
	console.log(`Machine ${ mac } ${ json.success ? "has been woken up" : "is still asleep"}.`);
}
wake();