phpBB 2.0.19-scripts
[autoinstalls/phpBB.git] / 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 1.47.2.21 2005/12/29 11:51:13 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'] || isset($HTTP_POST_VARS['admin'])) )
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, user_login_tries, user_last_login_try
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 the last login is more than x minutes ago, then reset the login tries/time
77                                 if ($row['user_last_login_try'] && $board_config['login_reset_time'] && $row['user_last_login_try'] < (time() - ($board_config['login_reset_time'] * 60)))
78                                 {
79                                         $db->sql_query('UPDATE ' . USERS_TABLE . ' SET user_login_tries = 0, user_last_login_try = 0 WHERE user_id = ' . $row['user_id']);
80                                         $row['user_last_login_try'] = $row['user_login_tries'] = 0;
81                                 }
82                                 
83                                 // Check to see if user is allowed to login again... if his tries are exceeded
84                                 if ($row['user_last_login_try'] && $board_config['login_reset_time'] && $board_config['max_login_attempts'] && 
85                                         $row['user_last_login_try'] >= (time() - ($board_config['login_reset_time'] * 60)) && $row['user_login_tries'] >= $board_config['max_login_attempts'])
86                                 {
87                                         message_die(GENERAL_MESSAGE, sprintf($lang['Login_attempts_exceeded'], $board_config['max_login_attempts'], $board_config['login_reset_time']));
88                                 }
89
90                                 if( md5($password) == $row['user_password'] && $row['user_active'] )
91                                 {
92                                         $autologin = ( isset($HTTP_POST_VARS['autologin']) ) ? TRUE : 0;
93
94                                         $admin = (isset($HTTP_POST_VARS['admin'])) ? 1 : 0;
95                                         $session_id = session_begin($row['user_id'], $user_ip, PAGE_INDEX, FALSE, $autologin, $admin);
96
97                                         // Reset login tries
98                                         $db->sql_query('UPDATE ' . USERS_TABLE . ' SET user_login_tries = 0, user_last_login_try = 0 WHERE user_id = ' . $row['user_id']);
99
100                                         if( $session_id )
101                                         {
102                                                 $url = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&amp;', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : "index.$phpEx";
103                                                 redirect(append_sid($url, true));
104                                         }
105                                         else
106                                         {
107                                                 message_die(CRITICAL_ERROR, "Couldn't start session : login", "", __LINE__, __FILE__);
108                                         }
109                                 }
110                                 else
111                                 {
112                                         // Save login tries and last login
113                                         if ($row['user_id'] != ANONYMOUS)
114                                         {
115                                                 $sql = 'UPDATE ' . USERS_TABLE . '
116                                                         SET user_login_tries = user_login_tries + 1, user_last_login_try = ' . time() . '
117                                                         WHERE user_id = ' . $row['user_id'];
118                                                 $db->sql_query($sql);
119                                         }
120                                         
121                                         $redirect = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&amp;', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : '';
122                                         $redirect = str_replace('?', '&', $redirect);
123
124                                         if (strstr(urldecode($redirect), "\n") || strstr(urldecode($redirect), "\r"))
125                                         {
126                                                 message_die(GENERAL_ERROR, 'Tried to redirect to potentially insecure url.');
127                                         }
128
129                                         $template->assign_vars(array(
130                                                 'META' => "<meta http-equiv=\"refresh\" content=\"3;url=login.$phpEx?redirect=$redirect\">")
131                                         );
132
133                                         $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>');
134
135                                         message_die(GENERAL_MESSAGE, $message);
136                                 }
137                         }
138                 }
139                 else
140                 {
141                         $redirect = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&amp;', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : "";
142                         $redirect = str_replace("?", "&", $redirect);
143
144                         if (strstr(urldecode($redirect), "\n") || strstr(urldecode($redirect), "\r"))
145                         {
146                                 message_die(GENERAL_ERROR, 'Tried to redirect to potentially insecure url.');
147                         }
148
149                         $template->assign_vars(array(
150                                 'META' => "<meta http-equiv=\"refresh\" content=\"3;url=login.$phpEx?redirect=$redirect\">")
151                         );
152
153                         $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>');
154
155                         message_die(GENERAL_MESSAGE, $message);
156                 }
157         }
158         else if( ( isset($HTTP_GET_VARS['logout']) || isset($HTTP_POST_VARS['logout']) ) && $userdata['session_logged_in'] )
159         {
160                 // session id check
161                 if ($sid == '' || $sid != $userdata['session_id'])
162                 {
163                         message_die(GENERAL_ERROR, 'Invalid_session');
164                 }
165
166                 if( $userdata['session_logged_in'] )
167                 {
168                         session_end($userdata['session_id'], $userdata['user_id']);
169                 }
170
171                 if (!empty($HTTP_POST_VARS['redirect']) || !empty($HTTP_GET_VARS['redirect']))
172                 {
173                         $url = (!empty($HTTP_POST_VARS['redirect'])) ? htmlspecialchars($HTTP_POST_VARS['redirect']) : htmlspecialchars($HTTP_GET_VARS['redirect']);
174                         $url = str_replace('&amp;', '&', $url);
175                         redirect(append_sid($url, true));
176                 }
177                 else
178                 {
179                         redirect(append_sid("index.$phpEx", true));
180                 }
181         }
182         else
183         {
184                 $url = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&amp;', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : "index.$phpEx";
185                 redirect(append_sid($url, true));
186         }
187 }
188 else
189 {
190         //
191         // Do a full login page dohickey if
192         // user not already logged in
193         //
194         if( !$userdata['session_logged_in'] || (isset($HTTP_GET_VARS['admin']) && $userdata['session_logged_in'] && $userdata['user_level'] == ADMIN))
195         {
196                 $page_title = $lang['Login'];
197                 include($phpbb_root_path . 'includes/page_header.'.$phpEx);
198
199                 $template->set_filenames(array(
200                         'body' => 'login_body.tpl')
201                 );
202
203                 $forward_page = '';
204
205                 if( isset($HTTP_POST_VARS['redirect']) || isset($HTTP_GET_VARS['redirect']) )
206                 {
207                         $forward_to = $HTTP_SERVER_VARS['QUERY_STRING'];
208
209                         if( preg_match("/^redirect=([a-z0-9\.#\/\?&=\+\-_]+)/si", $forward_to, $forward_matches) )
210                         {
211                                 $forward_to = ( !empty($forward_matches[3]) ) ? $forward_matches[3] : $forward_matches[1];
212                                 $forward_match = explode('&', $forward_to);
213
214                                 if(count($forward_match) > 1)
215                                 {
216                                         for($i = 1; $i < count($forward_match); $i++)
217                                         {
218                                                 if( !ereg("sid=", $forward_match[$i]) )
219                                                 {
220                                                         if( $forward_page != '' )
221                                                         {
222                                                                 $forward_page .= '&';
223                                                         }
224                                                         $forward_page .= $forward_match[$i];
225                                                 }
226                                         }
227                                         $forward_page = $forward_match[0] . '?' . $forward_page;
228                                 }
229                                 else
230                                 {
231                                         $forward_page = $forward_match[0];
232                                 }
233                         }
234                 }
235
236                 $username = ( $userdata['user_id'] != ANONYMOUS ) ? $userdata['username'] : '';
237
238                 $s_hidden_fields = '<input type="hidden" name="redirect" value="' . $forward_page . '" />';
239                 $s_hidden_fields .= (isset($HTTP_GET_VARS['admin'])) ? '<input type="hidden" name="admin" value="1" />' : '';
240
241                 make_jumpbox('viewforum.'.$phpEx);
242                 $template->assign_vars(array(
243                         'USERNAME' => $username,
244
245                         'L_ENTER_PASSWORD' => (isset($HTTP_GET_VARS['admin'])) ? $lang['Admin_reauthenticate'] : $lang['Enter_password'],
246                         'L_SEND_PASSWORD' => $lang['Forgotten_password'],
247
248                         'U_SEND_PASSWORD' => append_sid("profile.$phpEx?mode=sendpassword"),
249
250                         'S_HIDDEN_FIELDS' => $s_hidden_fields)
251                 );
252
253                 $template->pparse('body');
254
255                 include($phpbb_root_path . 'includes/page_tail.'.$phpEx);
256         }
257         else
258         {
259                 redirect(append_sid("index.$phpEx", true));
260         }
261
262 }
263
264 ?>