Handle authentication exceptions in Login module

- Break down large methods into smaller ones
- Add more authentication exception
- Add a legacy User::authenticate method
This commit is contained in:
Hypolite Petovan 2018-02-09 00:08:01 -05:00
parent 6f9c66b0bc
commit 8a9917857e
2 changed files with 187 additions and 116 deletions

View file

@ -51,89 +51,118 @@ class Login extends BaseModule
session_unset();
// OpenId Login
if (
!x($_POST, 'password')
empty($_POST['password'])
&& (
x($_POST, 'openid_url')
|| x($_POST, 'username')
!empty($_POST['openid_url'])
|| !empty($_POST['username'])
)
) {
$noid = Config::get('system', 'no_openid');
$openid_url = trim(defaults($_POST, 'openid_url', $_POST['username']));
$openid_url = trim($_POST['openid_url'] ? : $_POST['username']);
// if it's an email address or doesn't resolve to a URL, fail.
if ($noid || strpos($openid_url, '@') || !Network::isUrlValid($openid_url)) {
notice(L10n::t('Login failed.') . EOL);
goaway(self::getApp()->get_baseurl());
// NOTREACHED
}
// Otherwise it's probably an openid.
try {
$openid = new LightOpenID;
$openid->identity = $openid_url;
$_SESSION['openid'] = $openid_url;
$_SESSION['remember'] = $_POST['remember'];
$openid->returnUrl = self::getApp()->get_baseurl(true) . '/openid';
goaway($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.') . '<br /><br >' . L10n::t('The error message was:') . ' ' . $e->getMessage());
}
// NOTREACHED
self::openIdAuthentication($openid_url, !empty($_POST['remember']));
}
if (x($_POST, 'auth-params') && $_POST['auth-params'] === 'login') {
$record = null;
$addon_auth = [
'username' => trim($_POST['username']),
'password' => trim($_POST['password']),
'authenticated' => 0,
'user_record' => null
];
/*
* 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.
*/
Addon::callHooks('authenticate', $addon_auth);
if ($addon_auth['authenticated'] && count($addon_auth['user_record'])) {
$record = $addon_auth['user_record'];
} else {
$user_id = User::authenticate(trim($_POST['username']), trim($_POST['password']));
if ($user_id) {
$record = dba::selectFirst('user', [], ['uid' => $user_id]);
}
}
if (!$record || !count($record)) {
logger('authenticate: failed login attempt: ' . notags(trim($_POST['username'])) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
notice(L10n::t('Login failed.') . EOL);
goaway(self::getApp()->get_baseurl());
}
if (!$_POST['remember']) {
new_cookie(0); // 0 means delete on browser exit
}
// if we haven't failed up this point, log them in.
$_SESSION['remember'] = $_POST['remember'];
$_SESSION['last_login_date'] = DateTimeFormat::utcNow();
authenticate_success($record, true, true);
if (x($_SESSION, 'return_url')) {
$return_url = $_SESSION['return_url'];
unset($_SESSION['return_url']);
} else {
$return_url = '';
}
goaway($return_url);
self::passwordAuthentication(
trim($_POST['username']),
trim($_POST['password']),
!empty($_POST['remember'])
);
}
}
/**
* Attempts to authenticate using OpenId
*
* @param string $openid_url OpenID URL string
* @param bool $remember Whether to set the session remember flag
*/
private static function openIdAuthentication($openid_url, $remember)
{
$noid = Config::get('system', 'no_openid');
// if it's an email address or doesn't resolve to a URL, fail.
if ($noid || strpos($openid_url, '@') || !Network::isUrlValid($openid_url)) {
notice(L10n::t('Login failed.') . EOL);
goaway(self::getApp()->get_baseurl());
// NOTREACHED
}
// Otherwise it's probably an openid.
try {
$openid = new LightOpenID;
$openid->identity = $openid_url;
$_SESSION['openid'] = $openid_url;
$_SESSION['remember'] = $remember;
$openid->returnUrl = self::getApp()->get_baseurl(true) . '/openid';
goaway($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.') . '<br /><br >' . 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 $remember Whether to set the session remember flag
*/
private static function passwordAuthentication($username, $password, $remember)
{
$record = null;
$addon_auth = [
'username' => $username,
'password' => $password,
'authenticated' => 0,
'user_record' => null
];
/*
* 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.
*/
Addon::callHooks('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 $e) {
logger('authenticate: failed login attempt: ' . notags($username) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
notice($e->getMessage() . EOL);
goaway(self::getApp()->get_baseurl() . '/login');
}
if (!$remember) {
new_cookie(0); // 0 means delete on browser exit
}
// if we haven't failed up this point, log them in.
$_SESSION['remember'] = $remember;
$_SESSION['last_login_date'] = DateTimeFormat::utcNow();
authenticate_success($record, true, true);
if (x($_SESSION, 'return_url')) {
$return_url = $_SESSION['return_url'];
unset($_SESSION['return_url']);
} else {
$return_url = '';
}
goaway($return_url);
}
/**
* @brief Tries to auth the user from the cookie or session
*