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(_('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_debug('Adding rememberme cookie for ' . $nickname);
  49                                 common_rememberme();
  50                         }
  51                         # success!
  52                         $url = common_get_returnto();
  53                         if ($url) {
  54                                 # We don't have to return to it again
  55                                 common_set_returnto(NULL);
  56                         } else {
  57                                 $url = common_local_url('all',
  58                                                                                 array('nickname' =>
  59                                                                                           $nickname));
  60                         }
  61                         common_redirect($url);
  62                 } else {
  63                         $this->show_form(_t('Incorrect username or password.'));
  64                 }
  65
  66                 common_real_login(true);
  67
  68                 if ($this->boolean('rememberme')) {
  69                         common_debug('Adding rememberme cookie for ' . $nickname);
  70                         common_rememberme($user);
  71                 }
  72                 # success!
  73                 $url = common_get_returnto();
  74                 if ($url) {
  75                         # We don't have to return to it again
  76                         common_set_returnto(NULL);
  77                 } else {
  78                         $url = common_local_url('all',
  79                                                                         array('nickname' =>
  80                                                                                   $nickname));
  81                 }
  82                 common_redirect($url);
  83         }
  84
  85         function show_form($error=NULL) {
  86                 common_show_header(_('Login'), NULL, $error, array($this, 'show_top'));
  87                 common_element_start('form', array('method' => 'post',
  88                                                                                    'id' => 'login',
  89                                                                                    'action' => common_local_url('login')));
  90                 common_input('nickname', _('Nickname'));
  91                 common_password('password', _('Password'));
  92                 common_checkbox('rememberme', _('Remember me'), false,
  93                                 _('Automatically login in the future; ' .
  94                                    'not for shared computers!'));
  95                 common_submit('submit', _('Login'));
  96                 common_element_end('form');
  97                 common_element_start('p');
  98                 common_element('a', array('href' => common_local_url('recoverpassword')),
  99                                            _('Lost or forgotten password?'));
 100                 common_element_end('p');
 101                 common_show_footer();
 102         }
 103
 104         function get_instructions() {
 105                 return _t('Login with your username and password. ' .
 106                                   'Don\'t have a username yet? ' .
 107                                   '[Register](%%action.register%%) a new account, or ' .
 108                                   'try [OpenID](%%action.openidlogin%%). ');
 109         }
 110
 111         function show_top($error=NULL) {
 112                 if ($error) {
 113                         common_element('p', 'error', $error);
 114                 } else {
 115                         $instr = $this->get_instructions();
 116                         $output = common_markup_to_html($instr);
 117                         common_element_start('div', 'instructions');
 118                         common_raw($output);
 119                         common_element_end('div');
 120                 }
 121         }
 122 }
 123 #