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<?php

/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4 foldmethod=marker: */

/**

 * Storage driver for use against a generic password file

 *

 * PHP versions 4 and 5

 *

 * LICENSE: This source file is subject to version 3.01 of the PHP license

 * that is available through the world-wide-web at the following URI:

 * http://www.php.net/license/3_01.txt.  If you did not receive a copy of

 * the PHP License and are unable to obtain it through the web, please

 * send a note to license@php.net so we can mail you a copy immediately.

 *

 * @category   Authentication

 * @package    Auth

 * @author     Stefan Ekman <stekman@sedata.org>

 * @author     Martin Jansen <mj@php.net>

 * @author     Mika Tuupola <tuupola@appelsiini.net>

 * @author     Michael Wallner <mike@php.net>

 * @author     Adam Ashley <aashley@php.net>

 * @copyright  2001-2006 The PHP Group

 * @license    http://www.php.net/license/3_01.txt  PHP License 3.01

 * @version    CVS: $Id: File.php,v 1.2 2006-12-14 15:04:28 jp_milcent Exp $

 * @link       http://pear.php.net/package/Auth

 */

/**

 * Include PEAR File_Passwd package

 */

require_once "File/Passwd.php";

/**

 * Include Auth_Container base class

 */

require_once "Auth/Container.php";

/**

 * Include PEAR package for error handling

 */

require_once "PEAR.php";

/**

 * Storage driver for fetching login data from an encrypted password file.

 *

 * This storage container can handle CVS pserver style passwd files.

 *

 * @category   Authentication

 * @package    Auth

 * @author     Stefan Ekman <stekman@sedata.org>

 * @author     Martin Jansen <mj@php.net>

 * @author     Mika Tuupola <tuupola@appelsiini.net>

 * @author     Michael Wallner <mike@php.net>

 * @author     Adam Ashley <aashley@php.net>

 * @copyright  2001-2006 The PHP Group

 * @license    http://www.php.net/license/3_01.txt  PHP License 3.01

 * @version    Release: 1.4.3  File: $Revision: 1.2 $

 * @link       http://pear.php.net/package/Auth

 */

class Auth_Container_File extends Auth_Container

{

    // {{{ properties

    /**

     * Path to passwd file

     *

     * @var string

     */

    var $pwfile = '';

    /**

     * Options for container

     *

     * @var array

     */

    var $options = array();

    // }}}

    // {{{ Auth_Container_File() [constructor]

    /**

     * Constructor of the container class

     *

     * @param  string $filename             path to passwd file

     * @return object Auth_Container_File   new Auth_Container_File object

     */

    function Auth_Container_File($filename) {

        $this->_setDefaults();

        // Only file is a valid option here

        if(is_array($filename)) {

            $this->pwfile = $filename['file'];

            $this->_parseOptions($filename);

        } else {

            $this->pwfile = $filename;

        }

    }

    // }}}

    // {{{ fetchData()

    /**

     * Authenticate an user

     *

     * @param   string  username

     * @param   string  password

     * @return  mixed   boolean|PEAR_Error

     */

    function fetchData($user, $pass)

    {

        return File_Passwd::staticAuth($this->options['type'], $this->pwfile, $user, $pass);

    }

    // }}}

    // {{{ listUsers()

    /**

     * List all available users

     *

     * @return   array

     */

    function listUsers()

    {

        $pw_obj = &$this->_load();

        if (PEAR::isError($pw_obj)) {

            return array();

        }

        $users  = $pw_obj->listUser();

        if (!is_array($users)) {

            return array();

        }

        foreach ($users as $key => $value) {

            $retVal[] = array("username" => $key,

                              "password" => $value['passwd'],

                              "cvsuser"  => $value['system']);

        }

        return $retVal;

    }

    // }}}

    // {{{ addUser()

    /**

     * Add a new user to the storage container

     *

     * @param string username

     * @param string password

     * @param mixed  Additional parameters to File_Password_*::addUser()

     *

     * @return boolean

     */

    function addUser($user, $pass, $additional='')

    {

        $params = array($user, $pass);

        if (is_array($additional)) {

            foreach ($additional as $item) {

                $params[] = $item;

            }

        } else {

            $params[] = $additional;

        }

        $pw_obj = &$this->_load();

        if (PEAR::isError($pw_obj)) {

            return false;

        }

        $res = call_user_func_array(array(&$pw_obj, 'addUser'), $params);

        if (PEAR::isError($res)) {

            return false;

        }

        $res = $pw_obj->save();

        if (PEAR::isError($res)) {

            return false;

        }

        return true;

    }

    // }}}

    // {{{ removeUser()

    /**

     * Remove user from the storage container

     *

     * @param   string  Username

     * @return  boolean

     */

    function removeUser($user)

    {

        $pw_obj = &$this->_load();

        if (PEAR::isError($pw_obj)) {

            return false;

        }

        $res = $pw_obj->delUser($user);

        if (PEAR::isError($res)) {

            return false;

        }

        $res = $pw_obj->save();

        if (PEAR::isError($res)) {

            return false;

        }

        return true;

    }

    // }}}

    // {{{ changePassword()

    /**

     * Change password for user in the storage container

     *

     * @param string Username

     * @param string The new password

     */

    function changePassword($username, $password)

    {

        $pw_obj = &$this->_load();

        if (PEAR::isError($pw_obj)) {

            return false;

        }

        $res = $pw_obj->changePasswd($username, $password);

        if (PEAR::isError($res)) {

            return false;

        }

        $res = $pw_obj->save();

        if (PEAR::isError($res)) {

            return false;

        }

        return true;

    }

    // }}}

    // {{{ _load()

    /**

     * Load and initialize the File_Passwd object

     *

     * @return  object  File_Passwd_Cvs|PEAR_Error

     */

    function &_load()

    {

        static $pw_obj;

        if (!isset($pw_obj)) {

            $pw_obj = File_Passwd::factory($this->options['type']);

            if (PEAR::isError($pw_obj)) {

                return $pw_obj;

            }

            $pw_obj->setFile($this->pwfile);

            $res = $pw_obj->load();

            if (PEAR::isError($res)) {

                return $res;

            }

        }

        return $pw_obj;

    }

    // }}}

    // {{{ _setDefaults()

    /**

     * Set some default options

     *

     * @access private

     * @return void

     */

    function _setDefaults()

    {

        $this->options['type']       = 'Cvs';

    }

    // }}}

    // {{{ _parseOptions()

    /**

     * Parse options passed to the container class

     *

     * @access private

     * @param  array

     */

    function _parseOptions($array)

    {

        foreach ($array as $key => $value) {

            if (isset($this->options[$key])) {

                $this->options[$key] = $value;

            }

        }

    }

    // }}}

}

?>