phpBB2_old/login.php

   1 <?php
   2 /***************************************************************************
   3  *                                login.php
   4  *                            -------------------
   5  *   begin                : Saturday, Feb 13, 2001
   6  *   copyright            : (C) 2001 The phpBB Group
   7  *   email                : support@phpbb.com
   8  *
   9  *   $Id: login.php,v 1.47.2.17 2004/11/18 17:49:35 acydburn Exp $
  10  *
  11  *
  12  ***************************************************************************/
  13
  14 /***************************************************************************
  15  *
  16  *   This program is free software; you can redistribute it and/or modify
  17  *   it under the terms of the GNU General Public License as published by
  18  *   the Free Software Foundation; either version 2 of the License, or
  19  *   (at your option) any later version.
  20  *
  21  ***************************************************************************/
  22
  23 //
  24 // Allow people to reach login page if
  25 // board is shut down
  26 //
  27 define("IN_LOGIN", true);
  28
  29 define('IN_PHPBB', true);
  30 $phpbb_root_path = './';
  31 include($phpbb_root_path . 'extension.inc');
  32 include($phpbb_root_path . 'common.'.$phpEx);
  33
  34 //
  35 // Set page ID for session management
  36 //
  37 $userdata = session_pagestart($user_ip, PAGE_LOGIN);
  38 init_userprefs($userdata);
  39 //
  40 // End session management
  41 //
  42
  43 // session id check
  44 if (!empty($HTTP_POST_VARS['sid']) || !empty($HTTP_GET_VARS['sid']))
  45 {
  46         $sid = (!empty($HTTP_POST_VARS['sid'])) ? $HTTP_POST_VARS['sid'] : $HTTP_GET_VARS['sid'];
  47 }
  48 else
  49 {
  50         $sid = '';
  51 }
  52
  53 if( isset($HTTP_POST_VARS['login']) || isset($HTTP_GET_VARS['login']) || isset($HTTP_POST_VARS['logout']) || isset($HTTP_GET_VARS['logout']) )
  54 {
  55         if( ( isset($HTTP_POST_VARS['login']) || isset($HTTP_GET_VARS['login']) ) && !$userdata['session_logged_in'] )
  56         {
  57                 $username = isset($HTTP_POST_VARS['username']) ? phpbb_clean_username($HTTP_POST_VARS['username']) : '';
  58                 $password = isset($HTTP_POST_VARS['password']) ? $HTTP_POST_VARS['password'] : '';
  59
  60                 $sql = "SELECT user_id, username, user_password, user_active, user_level
  61                         FROM " . USERS_TABLE . "
  62                         WHERE username = '" . str_replace("\\'", "''", $username) . "'";
  63                 if ( !($result = $db->sql_query($sql)) )
  64                 {
  65                         message_die(GENERAL_ERROR, 'Error in obtaining userdata', '', __LINE__, __FILE__, $sql);
  66                 }
  67
  68                 if( $row = $db->sql_fetchrow($result) )
  69                 {
  70                         if( $row['user_level'] != ADMIN && $board_config['board_disable'] )
  71                         {
  72                                 redirect(append_sid("index.$phpEx", true));
  73                         }
  74                         else
  75                         {
  76                                 if( md5($password) == $row['user_password'] && $row['user_active'] )
  77                                 {
  78                                         $autologin = ( isset($HTTP_POST_VARS['autologin']) ) ? TRUE : 0;
  79
  80                                         $session_id = session_begin($row['user_id'], $user_ip, PAGE_INDEX, FALSE, $autologin);
  81
  82                                         if( $session_id )
  83                                         {
  84                                                 $url = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&amp;', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : "index.$phpEx";
  85                                                 redirect(append_sid($url, true));
  86                                         }
  87                                         else
  88                                         {
  89                                                 message_die(CRITICAL_ERROR, "Couldn't start session : login", "", __LINE__, __FILE__);
  90                                         }
  91                                 }
  92                                 else
  93                                 {
  94                                         $redirect = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&amp;', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : '';
  95                                         $redirect = str_replace('?', '&', $redirect);
  96
  97                                         if (strstr(urldecode($redirect), "\n") || strstr(urldecode($redirect), "\r"))
  98                                         {
  99                                                 message_die(GENERAL_ERROR, 'Tried to redirect to potentially insecure url.');
 100                                         }
 101
 102                                         $template->assign_vars(array(
 103                                                 'META' => "<meta http-equiv=\"refresh\" content=\"3;url=login.$phpEx?redirect=$redirect\">")
 104                                         );
 105
 106                                         $message = $lang['Error_login'] . '<br /><br />' . sprintf($lang['Click_return_login'], "<a href=\"login.$phpEx?redirect=$redirect\">", '</a>') . '<br /><br />' .  sprintf($lang['Click_return_index'], '<a href="' . append_sid("index.$phpEx") . '">', '</a>');
 107
 108                                         message_die(GENERAL_MESSAGE, $message);
 109                                 }
 110                         }
 111                 }
 112                 else
 113                 {
 114                         $redirect = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&amp;', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : "";
 115                         $redirect = str_replace("?", "&", $redirect);
 116
 117                         if (strstr(urldecode($redirect), "\n") || strstr(urldecode($redirect), "\r"))
 118                         {
 119                                 message_die(GENERAL_ERROR, 'Tried to redirect to potentially insecure url.');
 120                         }
 121
 122                         $template->assign_vars(array(
 123                                 'META' => "<meta http-equiv=\"refresh\" content=\"3;url=login.$phpEx?redirect=$redirect\">")
 124                         );
 125
 126                         $message = $lang['Error_login'] . '<br /><br />' . sprintf($lang['Click_return_login'], "<a href=\"login.$phpEx?redirect=$redirect\">", '</a>') . '<br /><br />' .  sprintf($lang['Click_return_index'], '<a href="' . append_sid("index.$phpEx") . '">', '</a>');
 127
 128                         message_die(GENERAL_MESSAGE, $message);
 129                 }
 130         }
 131         else if( ( isset($HTTP_GET_VARS['logout']) || isset($HTTP_POST_VARS['logout']) ) && $userdata['session_logged_in'] )
 132         {
 133                 if( $userdata['session_logged_in'] )
 134                 {
 135                         session_end($userdata['session_id'], $userdata['user_id']);
 136                 }
 137
 138                 if (!empty($HTTP_POST_VARS['redirect']) || !empty($HTTP_GET_VARS['redirect']))
 139                 {
 140                         $url = (!empty($HTTP_POST_VARS['redirect'])) ? htmlspecialchars($HTTP_POST_VARS['redirect']) : htmlspecialchars($HTTP_GET_VARS['redirect']);
 141                         $url = str_replace('&amp;', '&', $url);
 142                         redirect(append_sid($url, true));
 143                 }
 144                 else
 145                 {
 146                         redirect(append_sid("index.$phpEx", true));
 147                 }
 148         }
 149         else
 150         {
 151                 $url = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&amp;', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : "index.$phpEx";
 152                 redirect(append_sid($url, true));
 153         }
 154 }
 155 else
 156 {
 157         //
 158         // Do a full login page dohickey if
 159         // user not already logged in
 160         //
 161         if( !$userdata['session_logged_in'] )
 162         {
 163                 $page_title = $lang['Login'];
 164                 include($phpbb_root_path . 'includes/page_header.'.$phpEx);
 165
 166                 $template->set_filenames(array(
 167                         'body' => 'login_body.tpl')
 168                 );
 169
 170                 if( isset($HTTP_POST_VARS['redirect']) || isset($HTTP_GET_VARS['redirect']) )
 171                 {
 172                         $forward_to = $HTTP_SERVER_VARS['QUERY_STRING'];
 173
 174                         if( preg_match("/^redirect=([a-z0-9\.#\/\?&=\+\-_]+)/si", $forward_to, $forward_matches) )
 175                         {
 176                                 $forward_to = ( !empty($forward_matches[3]) ) ? $forward_matches[3] : $forward_matches[1];
 177                                 $forward_match = explode('&', $forward_to);
 178
 179                                 if(count($forward_match) > 1)
 180                                 {
 181                                         $forward_page = '';
 182
 183                                         for($i = 1; $i < count($forward_match); $i++)
 184                                         {
 185                                                 if( !ereg("sid=", $forward_match[$i]) )
 186                                                 {
 187                                                         if( $forward_page != '' )
 188                                                         {
 189                                                                 $forward_page .= '&';
 190                                                         }
 191                                                         $forward_page .= $forward_match[$i];
 192                                                 }
 193                                         }
 194                                         $forward_page = $forward_match[0] . '?' . $forward_page;
 195                                 }
 196                                 else
 197                                 {
 198                                         $forward_page = $forward_match[0];
 199                                 }
 200                         }
 201                 }
 202                 else
 203                 {
 204                         $forward_page = '';
 205                 }
 206
 207                 $username = ( $userdata['user_id'] != ANONYMOUS ) ? $userdata['username'] : '';
 208
 209                 $s_hidden_fields = '<input type="hidden" name="redirect" value="' . $forward_page . '" />';
 210
 211                 make_jumpbox('viewforum.'.$phpEx, $forum_id);
 212                 $template->assign_vars(array(
 213                         'USERNAME' => $username,
 214
 215                         'L_ENTER_PASSWORD' => $lang['Enter_password'],
 216                         'L_SEND_PASSWORD' => $lang['Forgotten_password'],
 217
 218                         'U_SEND_PASSWORD' => append_sid("profile.$phpEx?mode=sendpassword"),
 219
 220                         'S_HIDDEN_FIELDS' => $s_hidden_fields)
 221                 );
 222
 223                 $template->pparse('body');
 224
 225                 include($phpbb_root_path . 'includes/page_tail.'.$phpEx);
 226         }
 227         else
 228         {
 229                 redirect(append_sid("index.$phpEx", true));
 230         }
 231
 232 }
 233
 234 ?>