1 files changed, 124 insertions, 0 deletions
diff --git a/application/libraries/Duser/Duser.php b/application/libraries/Duser/Duser.php
new file mode 100644
index 000000000..0007fabd8
--- /dev/null
+++ b/application/libraries/Duser/Duser.php
@@ -0,0 +1,124 @@
+<?php
+/*
+ * Copyright 2013 Florian "Bluewind" Pritz <bluewind@server-speed.net>
+ *
+ * Licensed under AGPLv3
+ * (see COPYING for full license text)
+ *
+ */
+
+abstract class Duser_Driver extends CI_Driver {
+
+	// List of optional functions that are implemented
+	//
+	// Possible values are:
+	//  - can_register_new_users (only supported with the DB driver!)
+	//  - can_reset_password (only supported with the DB driver!)
+	//  - can_change_email (only supported with the DB driver!)
+	public $optional_functions = array();
+
+	/*
+	 * The returned array should contain the following keys:
+	 *  - username string
+	 *  - userid INT > 0
+	 *
+	 * @param username
+	 * @param password
+	 * @return mixed array on success, false on failure
+	 */
+	abstract public function login($username, $password);
+
+	/*
+	 * @param username
+	 * @return boolean true is username exists, false otherwise
+	 */
+	public function username_exists($username) {
+		return null;
+	}
+
+	/*
+	 * @param userid
+	 * @return string email address of the user
+	 */
+	public function get_email($userid) {
+		return null;
+	}
+}
+
+class Duser extends CI_Driver_Library {
+
+	protected $_adapter = null;
+
+	protected $valid_drivers = array(
+		'db', 'ldap', 'fluxbb'
+	);
+
+	function __construct()
+	{
+		$CI =& get_instance();
+
+		$this->_adapter = $CI->config->item("authentication_driver");
+	}
+
+	// require an optional function to be implemented
+	public function require_implemented($function) {
+		if (!$this->is_implemented($function)) {
+			throw new \exceptions\PublicApiException("libraries/duser/optional-function-not-implemented", ""
+				."Optional function '".$function."' not implemented in user adapter '".$this->_adapter."'. "
+				."Requested functionally unavailable.");
+		}
+	}
+
+	// check if an optional function is implemented
+	public function is_implemented($function) {
+		if (in_array($function, $this->{$this->_adapter}->optional_functions)) {
+			return true;
+		}
+
+		return false;
+	}
+
+	public function login($username, $password)
+	{
+		$login_info = $this->{$this->_adapter}->login($username, $password);
+		if ($login_info === false) {
+			return false;
+		}
+
+		$CI =& get_instance();
+
+		$CI->session->set_userdata(array(
+			'logged_in' => true,
+			'username' => $login_info["username"],
+			'userid' => $login_info["userid"],
+			'access_level' => 'full',
+		));
+
+		return true;
+	}
+
+	public function username_exists($username)
+	{
+		if ($username === false) {
+			return false;
+		}
+
+		return $this->{$this->_adapter}->username_exists($username);
+	}
+
+	public function get_email($userid)
+	{
+		return $this->{$this->_adapter}->get_email($userid);
+	}
+
+	public function test_login_credentials($username, $password)
+	{
+		$login_info = $this->{$this->_adapter}->login($username, $password);
+
+		if (isset($login_info['username']) && $login_info['username'] === $username) {
+			return true;
+		}
+
+		return false;
+	}
+}