actions/openidlogin.php

   1 <?php
   2 /*
   3  * Laconica - a distributed open-source microblogging tool
   4  * Copyright (C) 2008, Controlez-Vous, Inc.
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU Affero General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU Affero General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Affero General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 if (!defined('LACONICA')) { exit(1); }
  21
  22 require_once(INSTALLDIR.'/lib/openid.php');
  23
  24 class OpenidloginAction extends Action {
  25
  26     function handle($args)
  27     {
  28         parent::handle($args);
  29         if (common_logged_in()) {
  30             common_user_error(_('Already logged in.'));
  31         } else if ($_SERVER['REQUEST_METHOD'] == 'POST') {
  32             $openid_url = $this->trimmed('openid_url');
  33
  34             # CSRF protection
  35             $token = $this->trimmed('token');
  36             if (!$token || $token != common_session_token()) {
  37                 $this->show_form(_('There was a problem with your session token. Try again, please.'), $openid_url);
  38                 return;
  39             }
  40
  41             $rememberme = $this->boolean('rememberme');
  42
  43             common_ensure_session();
  44
  45             $_SESSION['openid_rememberme'] = $rememberme;
  46
  47             $result = oid_authenticate($openid_url,
  48                                        'finishopenidlogin');
  49
  50             if (is_string($result)) { # error message
  51                 unset($_SESSION['openid_rememberme']);
  52                 $this->show_form($result, $openid_url);
  53             }
  54         } else {
  55             $openid_url = oid_get_last();
  56             $this->show_form(null, $openid_url);
  57         }
  58     }
  59
  60     function get_instructions()
  61     {
  62         return _('Login with an [OpenID](%%doc.openid%%) account.');
  63     }
  64
  65     function show_top($error=null)
  66     {
  67         if ($error) {
  68             common_element('div', array('class' => 'error'), $error);
  69         } else {
  70             $instr = $this->get_instructions();
  71             $output = common_markup_to_html($instr);
  72             common_element_start('div', 'instructions');
  73             common_raw($output);
  74             common_element_end('div');
  75         }
  76     }
  77
  78     function show_form($error=null, $openid_url)
  79     {
  80         common_show_header(_('OpenID Login'), null, $error, array($this, 'show_top'));
  81         $formaction = common_local_url('openidlogin');
  82         common_element_start('form', array('method' => 'post',
  83                                            'id' => 'openidlogin',
  84                                            'action' => $formaction));
  85         common_hidden('token', common_session_token());
  86         common_input('openid_url', _('OpenID URL'),
  87                      $openid_url,
  88                      _('Your OpenID URL'));
  89         common_checkbox('rememberme', _('Remember me'), false,
  90                         _('Automatically login in the future; ' .
  91                            'not for shared computers!'));
  92         common_submit('submit', _('Login'));
  93         common_element_end('form');
  94         common_show_footer();
  95     }
  96 }