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diff --git a/application/controllers/helpers/SyjUserManager.php b/application/controllers/helpers/SyjUserManager.php
new file mode 100644
index 0000000..427e6fa
--- /dev/null
+++ b/application/controllers/helpers/SyjUserManager.php
@@ -0,0 +1,71 @@
+<?php
+/*  This file is part of Syj, Copyright (c) 2010-2011 Arnaud Renevier,
+    and is published under the AGPL license. */
+
+class Syj_Controller_Action_Helper_SyjUserManager extends Zend_Controller_Action_Helper_Abstract
+{
+    // -1 for undeterminated, null for non logged, Syj_Model_User for a logged user
+    protected static $_current = -1;
+
+    static public function validate($username, $hash) {
+        // TODO: try to make only one sql request
+        $adapter = Zend_Db_Table_Abstract::getDefaultAdapter();
+        $authAdapter = new Zend_Auth_Adapter_DbTable($adapter, 'users', 'pseudo', 'password');
+        $authAdapter->setIdentity($username)->setCredential($hash);
+        $auth = Zend_Auth::getInstance();
+        $result = $auth->authenticate($authAdapter);
+        if (!$result->isValid()) {
+            self::$_current = null;
+            return false;
+        }
+        $userid = $authAdapter->getResultRowObject('id')->id;
+        $userMapper = new Syj_Model_UserMapper();
+        $user = new Syj_Model_User();
+        if (!$userMapper->find($userid, $user)) {
+            throw new Zend_Exception();
+        }
+
+        if (!isset ($_COOKIE['syj_user']) or (!isset ($_COOKIE['syj_hashpass']))) {
+            setcookie("syj_user", $username, 0, "", "", false, true);
+            setcookie("syj_hashpass", $hash, 0, "", "", false, true);
+        }
+        self::$_current = $user;
+        return true;
+    }
+
+    static public function logout() {
+        self::$_current = null;
+        if (isset ($_COOKIE['syj_user'])) {
+            setcookie ('syj_user', "", time() - 3600, "" , "",false, true);
+        }
+        if (isset ($_COOKIE['syj_hashpass'])) {
+            setcookie ('syj_hashpass', "", time() - 3600, "" , "",false, true);
+        }
+    }
+
+    static public function current() {
+        if (self::$_current === -1) {
+            if ((!isset ($_COOKIE['syj_user'])) || (!isset ($_COOKIE['syj_hashpass']))
+                 || (!self::validate($_COOKIE['syj_user'], $_COOKIE['syj_hashpass']))) {
+                    self::logout();
+            }
+        }
+        return self::$_current;
+    }
+
+    public function needsLogin() {
+        if (self::current()) {
+            return;
+        }
+
+        $viewRenderer = Zend_Controller_Action_HelperBroker::getStaticHelper('viewRenderer');
+        $view = $viewRenderer->view;
+        $request = $this->getRequest();
+
+        $encodeduri = $view->UriPath(true);
+        $loginurl = $view->addParamToUrl($view->baseUrl() . '/' . 'login', 'redirect', $encodeduri);
+        $translator = Zend_Registry::get('Zend_Translate');
+        $this->getActionController()->getHelper('Redirector')->gotoURL($loginurl, array('prependBase' => false));
+    }
+
+}