actions/login.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 class LoginAction extends Action {
  23
  24         function handle($args) {
  25                 parent::handle($args);
  26                 if (common_is_real_login()) {
  27                         common_user_error(_t('Already logged in.'));
  28                 } else if ($_SERVER['REQUEST_METHOD'] == 'POST') {
  29                         $this->check_login();
  30                 } else {
  31                         $this->show_form();
  32                 }
  33         }
  34
  35         function check_login() {
  36                 # XXX: form token in $_SESSION to prevent XSS
  37                 # XXX: login throttle
  38                 $nickname = $this->arg('nickname');
  39                 $password = $this->arg('password');
  40                 if (common_check_user($nickname, $password)) {
  41                         # success!
  42                         if (!common_set_user($nickname)) {
  43                                 common_server_error(_t('Error setting user.'));
  44                                 return;
  45                         }
  46                         common_real_login(true);
  47                         if ($this->boolean('rememberme')) {
  48                                 common_rememberme();
  49                         }
  50                         # success!
  51                         $url = common_get_returnto();
  52                         if ($url) {
  53                                 # We don't have to return to it again
  54                                 common_set_returnto(NULL);
  55                         } else {
  56                                 $url = common_local_url('all',
  57                                                                                 array('nickname' =>
  58                                                                                           $nickname));
  59                         }
  60                         common_redirect($url);
  61                 } else {
  62                         $this->show_form(_t('Incorrect username or password.'));
  63                 }
  64         }
  65
  66         function show_form($error=NULL) {
  67                 common_show_header(_t('Login'), NULL, $error, array($this, 'show_top'));
  68                 common_element_start('form', array('method' => 'POST',
  69                                                                                    'id' => 'login',
  70                                                                                    'action' => common_local_url('login')));
  71                 common_input('nickname', _t('Nickname'));
  72                 common_password('password', _t('Password'));
  73                 common_checkbox('rememberme', _t('Remember me'),
  74                                 _t('Automatically login in the future; ' .
  75                                    'not for shared computers!'));
  76                 common_submit('submit', _t('Login'));
  77                 common_element_end('form');
  78                 common_show_footer();
  79         }
  80
  81         function show_top($error=NULL) {
  82                 if ($error) {
  83                         common_element('p', 'error', $error);
  84                 } else {
  85                         common_element('p', 'instructions',
  86                                                    _t('Login with your username and password. ' .
  87                                                           'Don\'t have a username yet? Choose register above. '));
  88                 }
  89         }
  90 }