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Current File : //proc/thread-self/root/usr/local/lib/php-5.3.3/lib/php/Auth/Container/IMAP.php
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4 foldmethod=marker: */

/**
 * Storage driver for use against IMAP servers
 *
 * 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     Jeroen Houben <jeroen@terena.nl>
 * @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: IMAP.php 237449 2007-06-12 03:11:27Z aashley $
 * @link       http://pear.php.net/package/Auth
 * @since      File available since Release 1.2.0
 */

/**
 * Include Auth_Container base class
 */
require_once "Auth/Container.php";

/**
 * Include PEAR class for error handling
 */
require_once "PEAR.php";

/**
 * Storage driver for fetching login data from an IMAP server
 *
 * This class is based on LDAP containers, but it very simple.
 * By default it connects to localhost:143
 * The constructor will first check if the host:port combination is
 * actually reachable. This behaviour can be disabled.
 * It then tries to create an IMAP stream (without opening a mailbox)
 * If you wish to pass extended options to the connections, you may
 * do so by specifying protocol options.
 *
 * To use this storage containers, you have to use the
 * following syntax:
 *
 * <?php
 * ...
 * $params = array(
 * 'host'       => 'mail.example.com',
 * 'port'       => 143,
 * );
 * $myAuth = new Auth('IMAP', $params);
 * ...
 *
 * By default we connect without any protocol options set. However, some
 * servers require you to connect with the notls or norsh options set.
 * To do this you need to add the following value to the params array:
 * 'baseDSN'   => '/imap/notls/norsh'
 *
 * To connect to an SSL IMAP server:
 * 'baseDSN'   => '/imap/ssl'
 *
 * To connect to an SSL IMAP server with a self-signed certificate:
 * 'baseDSN'   => '/imap/ssl/novalidate-cert'
 *
 * Further options may be available and can be found on the php site at
 * http://www.php.net/manual/function.imap-open.php
 *
 * @category   Authentication
 * @package    Auth
 * @author     Jeroen Houben <jeroen@terena.nl>
 * @author     Cipriano Groenendal <cipri@campai.nl>
 * @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: @package_version@  File: $Revision: 237449 $
 * @link       http://pear.php.net/package/Auth
 * @since      Class available since Release 1.2.0
 */
class Auth_Container_IMAP extends Auth_Container
{

    // {{{ properties

    /**
     * Options for the class
     * @var array
     */
    var $options = array();

    // }}}
    // {{{ Auth_Container_IMAP() [constructor]

    /**
     * Constructor of the container class
     *
     * @param  $params  associative array with host, port, baseDSN, checkServer
     *                  and userattr key
     * @return object Returns an error object if something went wrong
     * @todo Use PEAR Net_IMAP if IMAP extension not loaded
     */
    function Auth_Container_IMAP($params)
    {
        if (!extension_loaded('imap')) {
            return PEAR::raiseError('Cannot use IMAP authentication, '
                    .'IMAP extension not loaded!', 41, PEAR_ERROR_DIE);
        }
        $this->_setDefaults();

        // set parameters (if any)
        if (is_array($params)) {
            $this->_parseOptions($params);
        }

        if ($this->options['checkServer']) {
            $this->_checkServer($this->options['timeout']);
        }
        return true;
    }

    // }}}
    // {{{ _setDefaults()

    /**
     * Set some default options
     *
     * @access private
     */
    function _setDefaults()
    {
        $this->options['host'] = 'localhost';
        $this->options['port'] = 143;
        $this->options['baseDSN'] = '';
        $this->options['checkServer'] = true;
        $this->options['timeout'] = 20;
    }

    // }}}
    // {{{ _checkServer()

    /**
     * Check if the given server and port are reachable
     *
     * @access private
     */
    function _checkServer() {
        $this->log('Auth_Container_IMAP::_checkServer() called.', AUTH_LOG_DEBUG);
        $fp = @fsockopen ($this->options['host'], $this->options['port'],
                          $errno, $errstr, $this->options['timeout']);
        if (is_resource($fp)) {
            @fclose($fp);
        } else {
            $message = "Error connecting to IMAP server "
                . $this->options['host']
                . ":" . $this->options['port'];
            return PEAR::raiseError($message, 41);
        }
    }

    // }}}
    // {{{ _parseOptions()

    /**
     * Parse options passed to the container class
     *
     * @access private
     * @param  array
     */
    function _parseOptions($array)
    {
        foreach ($array as $key => $value) {
            $this->options[$key] = $value;
        }
    }

    // }}}
    // {{{ fetchData()

    /**
     * Try to open a IMAP stream using $username / $password
     *
     * @param  string Username
     * @param  string Password
     * @return boolean
     */
    function fetchData($username, $password)
    {
        $this->log('Auth_Container_IMAP::fetchData() called.', AUTH_LOG_DEBUG);
        $dsn = '{'.$this->options['host'].':'.$this->options['port'].$this->options['baseDSN'].'}';
        $conn = @imap_open ($dsn, $username, $password, OP_HALFOPEN);
        if (is_resource($conn)) {
            $this->log('Successfully connected to IMAP server.', AUTH_LOG_DEBUG);
            $this->activeUser = $username;
            @imap_close($conn);
            return true;
        } else {
            $this->log('Connection to IMAP server failed.', AUTH_LOG_DEBUG);
            $this->activeUser = '';
            return false;
        }
    }

    // }}}

}
?>
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