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<?php
declare(strict_types=1);
/*
* This file is part of the Sonata Project package.
*
* (c) Thomas Rabaix <thomas.rabaix@sonata-project.org>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
class Users
{
public function __construct(string $file = '../users.dat')
{
$this->userFile = $file;
$this->users = json_decode(file_get_contents($file), true);
}
public function hasSession()
{
session_start();
if (isset($_SESSION['username'])) {
return $_SESSION['username'];
}
return false;
}
public function storeData(User $user): void
{
$this->users[$user->getUsername()] = $user->getData();
file_put_contents($this->userFile, json_encode($this->users));
}
public function loadUser($name)
{
if (isset($this->users[$name])) {
return new User($name, $this->users[$name]);
}
return false;
}
}
class User
{
public function __construct($user, $data)
{
$this->data = $data;
$this->user = $user;
}
public function auth($pass)
{
if ($this->data['password'] === $pass) {
return true;
}
return false;
}
public function startSession(): void
{
$_SESSION['username'] = $this->user;
}
public function doLogin(): void
{
session_regenerate_id();
$_SESSION['loggedin'] = true;
$_SESSION['ua'] = $_SERVER['HTTP_USER_AGENT'];
}
public function doOTP(): void
{
$_SESSION['OTP'] = true;
}
public function isOTP()
{
if (isset($_SESSION['OTP']) && true === $_SESSION['OTP']) {
return true;
}
return false;
}
public function isLoggedIn()
{
if (isset($_SESSION['loggedin']) && true === $_SESSION['loggedin'] &&
isset($_SESSION['ua']) && $_SESSION['ua'] === $_SERVER['HTTP_USER_AGENT']
) {
return $_SESSION['username'];
}
return false;
}
public function getUsername()
{
return $this->user;
}
public function getSecret()
{
if (isset($this->data['secret'])) {
return $this->data['secret'];
}
return false;
}
public function generateSecret()
{
$g = new \Sonata\GoogleAuthenticator\GoogleAuthenticator();
$secret = $g->generateSecret();
$this->data['secret'] = $secret;
return $secret;
}
public function getData()
{
return $this->data;
}
public function setOTPCookie(): void
{
$time = floor(time() / (3600 * 24)); // get day number
//about using the user agent: It's easy to fake it, but it increases the barrier for stealing and reusing cookies nevertheless
// and it doesn't do any harm (except that it's invalid after a browser upgrade, but that may be even intented)
$cookie = $time.':'.hash_hmac('sha1', $this->getUsername().':'.$time.':'.$_SERVER['HTTP_USER_AGENT'], $this->getSecret());
setcookie('otp', $cookie, time() + (30 * 24 * 3600), null, null, null, true);
}
public function hasValidOTPCookie()
{
// 0 = tomorrow it is invalid
$daysUntilInvalid = 0;
$time = (string) floor((time() / (3600 * 24))); // get day number
if (isset($_COOKIE['otp'])) {
[$otpday, $hash] = explode(':', $_COOKIE['otp']);
if ($otpday >= $time - $daysUntilInvalid && $hash === hash_hmac('sha1', $this->getUsername().':'.$otpday.':'.$_SERVER['HTTP_USER_AGENT'], $this->getSecret())) {
return true;
}
}
return false;
}
}
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