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<?php |
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abstract class Ajde_User extends Ajde_Model |
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{ |
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protected $_autoloadParents = false; |
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protected $_displayField = 'fullname'; |
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public $usernameField = 'username'; |
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public $passwordField = 'password'; |
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const USERGROUP_USERS = 1; |
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const USERGROUP_ADMINS = 2; |
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const USERGROUP_CLIENTS = 3; |
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const USERGROUP_EMPLOYEES = 4; |
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public $defaultUserGroup = self::USERGROUP_USERS; |
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protected $cookieLifetime = 30; // in days |
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private static $_user; |
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/** |
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* @return UserModel |
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*/ |
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public static function getLoggedIn() |
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{ |
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if (!isset(self::$_user)) { |
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$session = new Ajde_Session('user'); |
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if ($session->has('model')) { |
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$user = $session->getModel('model'); |
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self::$_user = $user; |
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} else { |
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self::$_user = false; |
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} |
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} |
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return self::$_user; |
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} |
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public static function isAdmin() |
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{ |
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return ($user = self::getLoggedIn()) && (string) self::getLoggedIn()->getUsergroup() == self::USERGROUP_ADMINS; |
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} |
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public static function isDebugger() |
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{ |
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return ($user = self::getLoggedIn()) && $user->getDebug(); |
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} |
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public static function isTester() |
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{ |
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return ($user = self::getLoggedIn()) && $user->getTester(); |
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} |
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public function hasPassword() |
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{ |
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return !$this->verifyHash(''); |
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} |
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public function loadByCredentials($username, $password) |
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{ |
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if (empty($username) || empty($password)) { |
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return false; |
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} |
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$sql = 'SELECT * FROM '.$this->_table.' WHERE '.$this->usernameField.' = ? LIMIT 1'; |
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$values = [$username]; |
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$user = $this->_load($sql, $values); |
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if ($user === false) { |
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return false; |
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} |
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return $this->verifyHash($password) ? $user : false; |
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} |
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/** |
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* @return UsergroupModel: |
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*/ |
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public function getUsergroup() |
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{ |
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$this->loadParent('usergroup'); |
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return $this->get('usergroup'); |
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} |
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public function createHash($password) |
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{ |
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// @see http://net.tutsplus.com/tutorials/php/understanding-hash-functions-and-keeping-passwords-safe/ |
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if (CRYPT_BLOWFISH !== 1) { |
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Ajde_Dump::warn('BLOWFISH algorithm not available for hashing, using MD5 instead'); |
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// Use MD5 |
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$algo = '$1'; |
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$cost = ''; |
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$unique_salt = $this->generateSecret(12); |
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} else { |
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// Use BLOWFISH |
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$algo = '$2a'; |
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$cost = '$10'; |
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$unique_salt = $this->generateSecret(22); |
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} |
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$hash = crypt($password, $algo.$cost.'$'.$unique_salt); |
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if (empty($hash)) { |
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// TODO: |
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throw new Ajde_Exception('crypt() algorithm failed'); |
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} |
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return $hash; |
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} |
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public function verifyHash($password) |
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{ |
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$hash = $this->get($this->passwordField); |
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if (empty($hash)) { |
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return false; |
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} |
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if (CRYPT_BLOWFISH !== 1) { |
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// Use MD5 |
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$full_salt = substr($hash, 0, 15); |
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} else { |
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// Use BLOWFISH |
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$full_salt = substr($hash, 0, 29); |
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} |
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$new_hash = crypt($password, $full_salt); |
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return $hash == $new_hash; |
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} |
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public function login() |
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{ |
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if (empty($this->_data)) { |
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// TODO: |
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throw new Ajde_Exception('Invalid user object'); |
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} |
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$session = new Ajde_Session('user'); |
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$session->setModel('model', $this); |
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self::$_user = $this; |
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} |
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public function logout() |
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{ |
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// First destroy current session |
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// TODO: overhead to call session_regenerate_id? is it not required?? |
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//session_regenerate_id(); |
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$session = new Ajde_Session('user'); |
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$session->destroy(); |
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$cookie = new Ajde_Cookie(config('app.id').'_user'); |
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$cookie->destroy(); |
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self::$_user = null; |
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} |
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public function refresh() |
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{ |
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$this->loadByPK($this->getPK()); |
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} |
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public function generateSecret($length = 255) |
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{ |
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return substr(sha1(mt_rand()), 0, $length); |
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} |
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public function add($username, $password) |
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{ |
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$hash = $this->createHash($password); |
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$this->populate([ |
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$this->usernameField => $username, |
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$this->passwordField => $hash, |
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'usergroup' => $this->defaultUserGroup, |
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'secret' => $this->generateSecret(), |
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]); |
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return $this->insert(); |
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} |
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public function storeCookie($includeDomain = true) |
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{ |
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$hash = $this->getCookieHash($includeDomain); |
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$cookieValue = $this->getPK().':'.$hash; |
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$cookie = new Ajde_Cookie(config('app.id').'_user', true); |
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$cookie->setLifetime($this->cookieLifetime); |
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$cookie->set('auth', $cookieValue); |
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return true; |
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} |
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public function getCookieHash($includeDomain = true) |
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{ |
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if (empty($this->_data)) { |
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// TODO: |
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throw new Ajde_Exception('Invalid user object'); |
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} |
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if (!in_array('sha256', hash_algos())) { |
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// TODO: |
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throw new Ajde_Exception('SHA-256 algorithm not available for hashing'); |
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} |
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$userSecret = $this->get('secret'); |
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$appSecret = config('security.secret'); |
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if ($includeDomain) { |
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$hash = hash('sha256', $userSecret.$appSecret.$_SERVER['REMOTE_ADDR'].$_SERVER['HTTP_USER_AGENT']); |
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} else { |
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$hash = hash('sha256', $userSecret.$appSecret); |
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} |
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if (empty($hash)) { |
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// TODO: |
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throw new Ajde_Exception('SHA-256 algorithm failed'); |
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} |
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return $hash; |
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} |
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public function verifyCookie($includeDomain = true) |
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{ |
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$cookie = new Ajde_Cookie(config('app.id').'_user', true); |
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if (!$cookie->has('auth')) { |
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return false; |
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} |
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$auth = $cookie->get('auth'); |
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list($uid, $hash) = explode(':', $auth); |
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if (!$this->loadByPK($uid)) { |
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return false; |
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} |
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if ($this->getCookieHash($includeDomain) === $hash) { |
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$this->login(); |
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Ajde_Session_Flash::alert(sprintf(trans('Welcome back %s'), $this->getFullname())); |
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Ajde_Cache::getInstance()->disable(); |
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} else { |
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return false; |
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} |
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} |
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public function canChangeEmailTo($newEmail) |
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{ |
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if ($this->isFieldEncrypted('email')) { |
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$newEmail = $this->doEncrypt($newEmail); |
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} |
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$values = [$newEmail, $this->getPK()]; |
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$sql = 'SELECT * FROM '.$this->_table.' WHERE email = ? AND id != ? LIMIT 1'; |
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return !$this->_load($sql, $values, false); |
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} |
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public function canChangeUsernameTo($newUsername) |
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{ |
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if ($this->isFieldEncrypted($this->usernameField)) { |
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$newUsername = $this->doEncrypt($newUsername); |
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} |
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$values = [$newUsername, $this->getPK()]; |
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$sql = 'SELECT * FROM '.$this->_table.' WHERE '.$this->usernameField.' = ? AND id != ? LIMIT 1'; |
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return !$this->_load($sql, $values, false); |
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} |
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public function resetUser() |
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{ |
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if (!$this->hasNotEmpty('email')) { |
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return false; |
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} |
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$resetHash = $this->getResetHash(); |
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$this->set('reset_hash', $resetHash); |
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$this->save(); |
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$this->sendResetMail($resetHash); |
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return $resetHash; |
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} |
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public function sendResetMail($hash) |
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{ |
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// @todo exception |
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throw new Ajde_Exception('Please implement sendResetMail in UserModel'); |
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} |
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public function getResetHash() |
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{ |
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if (empty($this->_data)) { |
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// TODO: |
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throw new Ajde_Exception('Invalid user object'); |
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} |
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if (!in_array('sha256', hash_algos())) { |
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// TODO: |
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throw new Ajde_Exception('SHA-256 algorithm not available for hashing'); |
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} |
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$userSecret = $this->get('secret'); |
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$appSecret = config('security.secret'); |
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$hash = strtotime('+1 month').':'.hash('sha256', $userSecret.$appSecret.microtime().rand()); |
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if (empty($hash)) { |
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// TODO: |
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throw new Ajde_Exception('SHA-256 algorithm failed'); |
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} |
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return $hash; |
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} |
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} |
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If you implement
__calland you know which methods are available, you can improve IDE auto-completion and static analysis by adding a @method annotation to the class.This is often the case, when
__callis implemented by a parent class and only the child class knows which methods exist: