auth/nntp/auth.php

   1 <?php
   2
   3 /**
   4  * @author Martin Dougiamas
   5  * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
   6  * @package moodle multiauth
   7  *
   8  * Authentication Plugin: NNTP Authentication
   9  *
  10  * Authenticates against an NNTP server.
  11  *
  12  * 2006-08-31  File created.
  13  */
  14
  15 // This page cannot be called directly
  16 if (!isset($CFG)) exit;
  17
  18 /**
  19  * NNTP authentication plugin.
  20  */
  21 class auth_plugin_nntp {
  22
  23     /**
  24      * The configuration details for the plugin.
  25      */
  26     var $config;
  27
  28     /**
  29      * Constructor.
  30      */
  31     function auth_plugin_nntp() {
  32         $this->config = get_config('auth/nntp');
  33     }
  34
  35     /**
  36      * Returns true if the username and password work and false if they are
  37      * wrong or don't exist.
  38      *
  39      * @param string $username The username
  40      * @param string $password The password
  41      * @returns bool Authentication success or failure.
  42      */
  43     function user_login ($username, $password) {
  44         if (! function_exists('imap_open')) {
  45             print_error('auth_nntpnotinstalled','auth');
  46             exit;
  47         }
  48
  49         global $CFG;
  50
  51         // try each multiple host
  52         $hosts = split(';', $this->config->host);
  53         foreach ($hosts as $host) {
  54             $host = '{' . trim($host) . ':' . $this->config->port . '/nntp}';
  55
  56             error_reporting(0);
  57             $connection = imap_open($host, $username, $password, OP_HALFOPEN);
  58             error_reporting($CFG->debug);
  59
  60             if ($connection) {
  61                 imap_close($connection);
  62                 return true;
  63             }
  64         }
  65         return false;
  66     }
  67
  68     /**
  69      * Returns true if this authentication plugin is 'internal'.
  70      *
  71      * @returns bool
  72      */
  73     function is_internal() {
  74         return false;
  75     }
  76
  77     /**
  78      * Returns true if this authentication plugin can change the user's
  79      * password.
  80      *
  81      * @returns bool
  82      */
  83     function can_change_password() {
  84         return false;
  85     }
  86
  87     /**
  88      * Prints a form for configuring this authentication plugin.
  89      *
  90      * This function is called from admin/auth.php, and outputs a full page with
  91      * a form for configuring this plugin.
  92      *
  93      * @param array $page An object containing all the data for this page.
  94      */
  95     function config_form($config, $err) {
  96         include "config.html";
  97     }
  98
  99     /**
 100      * Processes and stores configuration data for this authentication plugin.
 101      */
 102     function process_config($config) {
 103         // set to defaults if undefined
 104         if (!isset ($config->host)) {
 105             $config->host = '127.0.0.1';
 106         }
 107         if (!isset ($config->port)) {
 108             $config->port = '119';
 109         }
 110         if (!isset($config->changepasswordurl)) {
 111             $config->changepasswordurl = '';
 112         }
 113
 114         // save settings
 115         set_config('host', $config->host, 'auth/nntp');
 116         set_config('port', $config->port, 'auth/nntp');
 117         set_config('changepasswordurl', $config->changepasswordurl, 'auth/nntp');
 118
 119         return true;
 120     }
 121
 122 }
 123
 124 ?>