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
  27     function handle($args)
  28     {
  29         parent::handle($args);
  30         if (common_logged_in()) {
  31             common_user_error(_('Already logged in.'));
  32         } else if ($_SERVER['REQUEST_METHOD'] == 'POST') {
  33             $openid_url = $this->trimmed('openid_url');
  34
  35             # CSRF protection
  36             $token = $this->trimmed('token');
  37             if (!$token || $token != common_session_token()) {
  38                 $this->show_form(_('There was a problem with your session token. Try again, please.'), $openid_url);
  39                 return;
  40             }
  41
  42             $rememberme = $this->boolean('rememberme');
  43
  44             common_ensure_session();
  45
  46             $_SESSION['openid_rememberme'] = $rememberme;
  47
  48             $result = oid_authenticate($openid_url,
  49                                        'finishopenidlogin');
  50
  51             if (is_string($result)) { # error message
  52                 unset($_SESSION['openid_rememberme']);
  53                 $this->show_form($result, $openid_url);
  54             }
  55         } else {
  56             $openid_url = oid_get_last();
  57             $this->show_form(null, $openid_url);
  58         }
  59     }
  60
  61     function get_instructions()
  62     {
  63         return _('Login with an [OpenID](%%doc.openid%%) account.');
  64     }
  65
  66     function show_top($error=null)
  67     {
  68         if ($error) {
  69             common_element('div', array('class' => 'error'), $error);
  70         } else {
  71             $instr = $this->get_instructions();
  72             $output = common_markup_to_html($instr);
  73             common_element_start('div', 'instructions');
  74             common_raw($output);
  75             common_element_end('div');
  76         }
  77     }
  78
  79     function show_form($error=null, $openid_url)
  80     {
  81         common_show_header(_('OpenID Login'), null, $error, array($this, 'show_top'));
  82         $formaction = common_local_url('openidlogin');
  83         common_element_start('form', array('method' => 'post',
  84                                            'id' => 'openidlogin',
  85                                            'action' => $formaction));
  86         common_hidden('token', common_session_token());
  87         common_input('openid_url', _('OpenID URL'),
  88                      $openid_url,
  89                      _('Your OpenID URL'));
  90         common_checkbox('rememberme', _('Remember me'), false,
  91                         _('Automatically login in the future; ' .
  92                            'not for shared computers!'));
  93         common_submit('submit', _('Login'));
  94         common_element_end('form');
  95         common_show_footer();
  96     }
  97 }