misuzu/public-legacy/auth/twofactor.php

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<?php
namespace Misuzu;
use RuntimeException;
use Misuzu\TOTPGenerator;
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if($msz->isLoggedIn()) {
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url_redirect('index');
return;
}
$users = $msz->getUsers();
$sessions = $msz->getSessions();
$tfaSessions = $msz->getTFASessions();
$loginAttempts = $msz->getLoginAttempts();
$ipAddress = $_SERVER['REMOTE_ADDR'];
$countryCode = $_SERVER['COUNTRY_CODE'] ?? 'XX';
$userAgent = $_SERVER['HTTP_USER_AGENT'] ?? '';
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$twofactor = !empty($_POST['twofactor']) && is_array($_POST['twofactor']) ? $_POST['twofactor'] : [];
$notices = [];
$remainingAttempts = $loginAttempts->countRemainingAttempts($ipAddress);
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$tokenString = !empty($_GET['token']) && is_string($_GET['token']) ? $_GET['token'] : (
!empty($twofactor['token']) && is_string($twofactor['token']) ? $twofactor['token'] : ''
);
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$tokenUserId = $tfaSessions->getTokenUserId($tokenString);
if(empty($tokenUserId)) {
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url_redirect('auth-login');
return;
}
$userInfo = $users->getUser($tokenUserId, 'id');
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// checking user_totp_key specifically because there's a fringe chance that
// there's a token present, but totp is actually disabled
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if(!$userInfo->hasTOTPKey()) {
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url_redirect('auth-login');
return;
}
while(!empty($twofactor)) {
if(!CSRF::validateRequest()) {
$notices[] = 'Was unable to verify the request, please try again!';
break;
}
$userAgent = $_SERVER['HTTP_USER_AGENT'] ?? '';
$redirect = !empty($twofactor['redirect']) && is_string($twofactor['redirect']) ? $twofactor['redirect'] : '';
if(empty($twofactor['code']) || !is_string($twofactor['code'])) {
$notices[] = 'Code field was empty.';
break;
}
if($remainingAttempts < 1) {
$notices[] = 'There are too many failed login attempts from your IP address, please try again later.';
break;
}
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$clientInfo = ClientInfo::fromRequest();
$totp = new TOTPGenerator($userInfo->getTOTPKey());
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if(!in_array($twofactor['code'], $totp->generateRange())) {
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$notices[] = sprintf(
"Invalid two factor code, %d attempt%s remaining",
$remainingAttempts - 1,
$remainingAttempts === 2 ? '' : 's'
);
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$loginAttempts->recordAttempt(false, $ipAddress, $countryCode, $userAgent, $clientInfo, $userInfo);
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break;
}
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$loginAttempts->recordAttempt(true, $ipAddress, $countryCode, $userAgent, $clientInfo, $userInfo);
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$tfaSessions->deleteToken($tokenString);
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try {
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$sessionInfo = $sessions->createSession($userInfo, $ipAddress, $countryCode, $userAgent, $clientInfo);
} catch(RuntimeException $ex) {
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$notices[] = "Something broke while creating a session for you, please tell an administrator or developer about this!";
break;
}
$authToken = AuthToken::create($userInfo, $sessionInfo);
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$authToken->applyCookie($sessionInfo->getExpiresTime());
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if(!is_local_url($redirect))
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$redirect = url('index');
redirect($redirect);
return;
}
Template::render('auth.twofactor', [
'twofactor_notices' => $notices,
'twofactor_redirect' => !empty($_GET['redirect']) && is_string($_GET['redirect']) ? $_GET['redirect'] : url('index'),
'twofactor_attempts_remaining' => $remainingAttempts,
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'twofactor_token' => $tokenString,
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]);