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