(auth) add local database authenticator to library

src/opnsense/mvc/app/library/OPNsense/Auth/Local.php

+<?php
+/**
+ *    Copyright (C) 2015 Deciso B.V.
+ *
+ *    All rights reserved.
+ *
+ *    Redistribution and use in source and binary forms, with or without
+ *    modification, are permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice,
+ *       this list of conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *
+ *    THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ *    INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ *    AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ *    AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ *    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *    POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+namespace OPNsense\Auth;
+
+use OPNsense\Core\Config;
+
+/**
+ * Class Local user database connector (using legacy xml structure).
+ * @package OPNsense\Auth
+ */
+class Local implements IAuthConnector
+{
+    /**
+     * set connector properties
+     * @param array $config connection properties
+     */
+    public function setProperties($config)
+    {
+        // local authenticator doesn't use any additional settings.
+    }
+
+    /**
+     * authenticate user against local database (in config.xml)
+     * @param $username username to authenticate
+     * @param $password user password
+     * @return bool authentication status
+     */
+    public function authenticate($username, $password)
+    {
+        // search local user in database
+        $configObj = Config::getInstance()->object();
+        $userObject = null;
+        foreach ($configObj->system->children() as $key => $value) {
+            if ($key == 'user' && !empty($value->name) && (string)$value->name == $username) {
+                // user found, stop search
+                $userObject = $value;
+                break;
+            }
+        }
+
+        if ($userObject != null) {
+            if (isset($userObject->disabled)) {
+                // disabled user
+                return false;
+            }
+            if (!empty($userObject->expires)
+                && strtotime("-1 day") > strtotime(date("m/d/Y", strtotime((string)$userObject->expires)))) {
+                // expired user
+                return false;
+            }
+            $passwd = crypt($password, (string)$userObject->password);
+            if ($passwd == (string)$userObject->password) {
+                // password ok, return successfully authen
+                return true;
+            }
+        }
+
+        return false;
+    }
+}