internalRedirect();
// NOTREACHED
}
// Otherwise it's probably an openid.
try {
$openid = new LightOpenID($a->getHostName());
$openid->identity = $openid_url;
Session::set('openid', $openid_url);
Session::set('remember', $remember);
$openid->returnUrl = $a->getBaseURL(true) . '/openid';
$openid->optional = ['namePerson/friendly', 'contact/email', 'namePerson', 'namePerson/first', 'media/image/aspect11', 'media/image/default'];
System::externalRedirect($openid->authUrl());
} catch (Exception $e) {
notice(L10n::t('We encountered a problem while logging in with the OpenID you provided. Please check the correct spelling of the ID.') . '
' . L10n::t('The error message was:') . ' ' . $e->getMessage());
}
}
/**
* Attempts to authenticate using login/password
*
* @param string $username User name
* @param string $password Clear password
* @param bool $remember Whether to set the session remember flag
* @param string $openid_identity OpenID identity
* @param string $openid_server OpenID URL
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function passwordAuthentication($username, $password, $remember, $openid_identity, $openid_server)
{
$record = null;
$addon_auth = [
'username' => $username,
'password' => $password,
'authenticated' => 0,
'user_record' => null
];
$a = self::getApp();
/*
* An addon indicates successful login by setting 'authenticated' to non-zero value and returning a user record
* Addons should never set 'authenticated' except to indicate success - as hooks may be chained
* and later addons should not interfere with an earlier one that succeeded.
*/
Hook::callAll('authenticate', $addon_auth);
try {
if ($addon_auth['authenticated']) {
$record = $addon_auth['user_record'];
if (empty($record)) {
throw new Exception(L10n::t('Login failed.'));
}
} else {
$record = DBA::selectFirst(
'user',
[],
['uid' => User::getIdFromPasswordAuthentication($username, $password)]
);
}
} catch (Exception $e) {
Logger::warning('authenticate: failed login attempt', ['action' => 'login', 'username' => Strings::escapeTags($username), 'ip' => $_SERVER['REMOTE_ADDR']]);
info('Login failed. Please check your credentials.' . EOL);
$a->internalRedirect();
}
if (!$remember) {
Authentication::setCookie(0); // 0 means delete on browser exit
}
// if we haven't failed up this point, log them in.
Session::set('remember', $remember);
Session::set('last_login_date', DateTimeFormat::utcNow());
if (!empty($openid_identity) || !empty($openid_server)) {
DBA::update('user', ['openid' => $openid_identity, 'openidserver' => $openid_server], ['uid' => $record['uid']]);
}
Session::setAuthenticatedForUser($a, $record, true, true);
$return_path = Session::get('return_path', '');
Session::remove('return_path');
$a->internalRedirect($return_path);
}
/**
* @brief Tries to auth the user from the cookie or session
*
* @todo Should be moved to Friendica\Core\Session when it's created
*/
public static function sessionAuth()
{
$a = self::getApp();
// When the "Friendica" cookie is set, take the value to authenticate and renew the cookie.
if (isset($_COOKIE["Friendica"])) {
$data = json_decode($_COOKIE["Friendica"]);
if (isset($data->uid)) {
$user = DBA::selectFirst(
'user',
[],
[
'uid' => $data->uid,
'blocked' => false,
'account_expired' => false,
'account_removed' => false,
'verified' => true,
]
);
if (DBA::isResult($user)) {
if (!hash_equals(
Authentication::getCookieHashForUser($user),
$data->hash
)) {
Logger::log("Hash for user " . $data->uid . " doesn't fit.");
Authentication::deleteSession();
$a->internalRedirect();
}
// Renew the cookie
// Expires after 7 days by default,
// can be set via system.auth_cookie_lifetime
$authcookiedays = Config::get('system', 'auth_cookie_lifetime', 7);
Authentication::setCookie($authcookiedays * 24 * 60 * 60, $user);
// Do the authentification if not done by now
if (!isset($_SESSION) || !isset($_SESSION['authenticated'])) {
Session::setAuthenticatedForUser($a, $user);
if (Config::get('system', 'paranoia')) {
$_SESSION['addr'] = $data->ip;
}
}
}
}
}
if (!empty($_SESSION['authenticated'])) {
if (!empty($_SESSION['visitor_id']) && empty($_SESSION['uid'])) {
$contact = DBA::selectFirst('contact', [], ['id' => $_SESSION['visitor_id']]);
if (DBA::isResult($contact)) {
self::getApp()->contact = $contact;
}
}
if (!empty($_SESSION['uid'])) {
// already logged in user returning
$check = Config::get('system', 'paranoia');
// extra paranoia - if the IP changed, log them out
if ($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) {
Logger::log('Session address changed. Paranoid setting in effect, blocking session. ' .
$_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
Authentication::deleteSession();
$a->internalRedirect();
}
$user = DBA::selectFirst(
'user',
[],
[
'uid' => $_SESSION['uid'],
'blocked' => false,
'account_expired' => false,
'account_removed' => false,
'verified' => true,
]
);
if (!DBA::isResult($user)) {
Authentication::deleteSession();
$a->internalRedirect();
}
// Make sure to refresh the last login time for the user if the user
// stays logged in for a long time, e.g. with "Remember Me"
$login_refresh = false;
if (empty($_SESSION['last_login_date'])) {
$_SESSION['last_login_date'] = DateTimeFormat::utcNow();
}
if (strcmp(DateTimeFormat::utc('now - 12 hours'), $_SESSION['last_login_date']) > 0) {
$_SESSION['last_login_date'] = DateTimeFormat::utcNow();
$login_refresh = true;
}
Session::setAuthenticatedForUser($a, $user, false, false, $login_refresh);
}
}
}
/**
* @brief Calculate the hash that is needed for the "Friendica" cookie
*
* @param array $user Record from "user" table
*
* @return string Hashed data
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function getCookieHashForUser($user)
{
return hash_hmac(
"sha256",
hash_hmac("sha256", $user["password"], $user["prvkey"]),
Config::get("system", "site_prvkey")
);
}
/**
* @brief Set the "Friendica" cookie
*
* @param int $time
* @param array $user Record from "user" table
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function setCookie($time, $user = [])
{
if ($time != 0) {
$time = $time + time();
}
if ($user) {
$value = json_encode([
"uid" => $user["uid"],
"hash" => self::getCookieHashForUser($user),
"ip" => ($_SERVER['REMOTE_ADDR'] ?? '') ?: '0.0.0.0'
]);
} else {
$value = "";
}
setcookie("Friendica", $value, $time, "/", "", (Config::get('system', 'ssl_policy') == App\BaseURL::SSL_POLICY_FULL), true);
}
/**
* @brief Kills the "Friendica" cookie and all session data
*/
public static function deleteSession()
{
self::setCookie(-3600); // make sure cookie is deleted on browser close, as a security measure
session_unset();
session_destroy();
}
public static function twoFactorCheck($uid, App $a)
{
// Check user setting, if 2FA disabled return
if (!PConfig::get($uid, '2fa', 'verified')) {
return;
}
// Check current path, if 2fa authentication module return
if ($a->argc > 0 && in_array($a->argv[0], ['2fa', 'view', 'help', 'api', 'proxy', 'logout'])) {
return;
}
// Case 1: 2FA session present and valid: return
if (Session::get('2fa')) {
return;
}
// Case 2: No valid 2FA session: redirect to code verification page
if ($a->isAjax()) {
throw new ForbiddenException();
} else {
$a->internalRedirect('2fa');
}
}
}