/**
* Attempt to log in using the given username and password.
*
* On a successful login, this function should return the username as 'uid' attribute,
* and merged attributes from the configuration file.
* On failure, it should throw an exception. A SimpleSAML_Error_Error('WRONGUSERPASS')
* should be thrown in case of a wrong username OR a wrong password, to prevent the
* enumeration of usernames.
*
* @param string $username The username the user wrote.
* @param string $password The password the user wrote.
* @return array Associative array with the users attributes.
*/
protected function login($username, $password)
{
assert('is_string($username)');
assert('is_string($password)');
foreach ($this->users as $userpass) {
$matches = explode(':', $userpass, 2);
if ($matches[0] == $username) {
$crypted = $matches[1];
// This is about the only attribute we can add
$attributes = array_merge(array('uid' => array($username)), $this->attributes);
// Traditional crypt(3)
if (crypt($password, $crypted) == $crypted) {
SimpleSAML_Logger::debug('User ' . $username . ' authenticated successfully');
return $attributes;
}
// Apache's custom MD5
if (SimpleSAML_Utils_Crypto::apr1Md5Valid($crypted, $password)) {
SimpleSAML_Logger::debug('User ' . $username . ' authenticated successfully');
return $attributes;
}
// SHA1 or plain-text
if (SimpleSAML_Utils_Crypto::pwValid($crypted, $password)) {
SimpleSAML_Logger::debug('User ' . $username . ' authenticated successfully');
return $attributes;
}
throw new SimpleSAML_Error_Error('WRONGUSERPASS');
}
}
throw new SimpleSAML_Error_Error('WRONGUSERPASS');
}
