Verzeichnisstruktur phpBB-2.0.0
- Veröffentlicht
- 03.04.2002
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login.php
001 <?php
002 /***************************************************************************
003 * login.php
004 * -------------------
005 * begin : Saturday, Feb 13, 2001
006 * copyright : (C) 2001 The phpBB Group
007 * email : support@phpbb.com
008 *
009 * $Id$
010 *
011 *
012 ***************************************************************************/
013
014 /***************************************************************************
015 *
016 * This program is free software; you can redistribute it and/or modify
017 * it under the terms of the GNU General Public License as published by
018 * the Free Software Foundation; either version 2 of the License, or
019 * (at your option) any later version.
020 *
021 ***************************************************************************/
022
023 //
024 // Allow people to reach login page if
025 // board is shut down
026 //
027 define("IN_LOGIN", true);
028
029 define('IN_PHPBB', true);
030 $phpbb_root_path = './';
031 include($phpbb_root_path . 'extension.inc');
032 include($phpbb_root_path . 'common.'.$phpEx);
033
034 //
035 // Set page ID for session management
036 //
037 $userdata = session_pagestart($user_ip, PAGE_LOGIN);
038 init_userprefs($userdata);
039 //
040 // End session management
041 //
042
043 // session id check
044 if (!empty($HTTP_POST_VARS['sid']) || !empty($HTTP_GET_VARS['sid']))
045 {
046 $sid = (!empty($HTTP_POST_VARS['sid'])) ? $HTTP_POST_VARS['sid'] : $HTTP_GET_VARS['sid'];
047 }
048 else
049 {
050 $sid = '';
051 }
052
053 if( isset($HTTP_POST_VARS['login']) || isset($HTTP_GET_VARS['login']) || isset($HTTP_POST_VARS['logout']) || isset($HTTP_GET_VARS['logout']) )
054 {
055 if( ( isset($HTTP_POST_VARS['login']) || isset($HTTP_GET_VARS['login']) ) && (!$userdata['session_logged_in'] || isset($HTTP_POST_VARS['admin'])) )
056 {
057 $username = isset($HTTP_POST_VARS['username']) ? phpbb_clean_username($HTTP_POST_VARS['username']) : '';
058 $password = isset($HTTP_POST_VARS['password']) ? $HTTP_POST_VARS['password'] : '';
059
060 $sql = "SELECT user_id, username, user_password, user_active, user_level, user_login_tries, user_last_login_try
061 FROM " . USERS_TABLE . "
062 WHERE username = '" . str_replace("\\'", "''", $username) . "'";
063 if ( !($result = $db->sql_query($sql)) )
064 {
065 message_die(GENERAL_ERROR, 'Error in obtaining userdata', '', __LINE__, __FILE__, $sql);
066 }
067
068 if( $row = $db->sql_fetchrow($result) )
069 {
070 if( $row['user_level'] != ADMIN && $board_config['board_disable'] )
071 {
072 redirect(append_sid("index.$phpEx", true));
073 }
074 else
075 {
076 // If the last login is more than x minutes ago, then reset the login tries/time
077 if ($row['user_last_login_try'] && $board_config['login_reset_time'] && $row['user_last_login_try'] < (time() - ($board_config['login_reset_time'] * 60)))
078 {
079 $db->sql_query('UPDATE ' . USERS_TABLE . ' SET user_login_tries = 0, user_last_login_try = 0 WHERE user_id = ' . $row['user_id']);
080 $row['user_last_login_try'] = $row['user_login_tries'] = 0;
081 }
082
083 // Check to see if user is allowed to login again... if his tries are exceeded
084 if ($row['user_last_login_try'] && $board_config['login_reset_time'] && $board_config['max_login_attempts'] &&
085 $row['user_last_login_try'] >= (time() - ($board_config['login_reset_time'] * 60)) && $row['user_login_tries'] >= $board_config['max_login_attempts'] && $userdata['user_level'] != ADMIN)
086 {
087 message_die(GENERAL_MESSAGE, sprintf($lang['Login_attempts_exceeded'], $board_config['max_login_attempts'], $board_config['login_reset_time']));
088 }
089
090 if( md5($password) == $row['user_password'] && $row['user_active'] )
091 {
092 $autologin = ( isset($HTTP_POST_VARS['autologin']) ) ? TRUE : 0;
093
094 $admin = (isset($HTTP_POST_VARS['admin'])) ? 1 : 0;
095 $session_id = session_begin($row['user_id'], $user_ip, PAGE_INDEX, FALSE, $autologin, $admin);
096
097 // Reset login tries
098 $db->sql_query('UPDATE ' . USERS_TABLE . ' SET user_login_tries = 0, user_last_login_try = 0 WHERE user_id = ' . $row['user_id']);
099
100 if( $session_id )
101 {
102 $url = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&', '&', 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 // Only store a failed login attempt for an active user - inactive users can't login even with a correct password
111 elseif( $row['user_active'] )
112 {
113 // Save login tries and last login
114 if ($row['user_id'] != ANONYMOUS)
115 {
116 $sql = 'UPDATE ' . USERS_TABLE . '
117 SET user_login_tries = user_login_tries + 1, user_last_login_try = ' . time() . '
118 WHERE user_id = ' . $row['user_id'];
119 $db->sql_query($sql);
120 }
121 }
122
123 $redirect = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : '';
124 $redirect = str_replace('?', '&', $redirect);
125
126 if (strstr(urldecode($redirect), "\n") || strstr(urldecode($redirect), "\r") || strstr(urldecode($redirect), ';url'))
127 {
128 message_die(GENERAL_ERROR, 'Tried to redirect to potentially insecure url.');
129 }
130
131 $template->assign_vars(array(
132 'META' => "<meta http-equiv=\"refresh\" content=\"3;url=login.$phpEx?redirect=$redirect\">")
133 );
134
135 $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>');
136
137 message_die(GENERAL_MESSAGE, $message);
138 }
139 }
140 else
141 {
142 $redirect = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : "";
143 $redirect = str_replace("?", "&", $redirect);
144
145 if (strstr(urldecode($redirect), "\n") || strstr(urldecode($redirect), "\r") || strstr(urldecode($redirect), ';url'))
146 {
147 message_die(GENERAL_ERROR, 'Tried to redirect to potentially insecure url.');
148 }
149
150 $template->assign_vars(array(
151 'META' => "<meta http-equiv=\"refresh\" content=\"3;url=login.$phpEx?redirect=$redirect\">")
152 );
153
154 $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>');
155
156 message_die(GENERAL_MESSAGE, $message);
157 }
158 }
159 else if( ( isset($HTTP_GET_VARS['logout']) || isset($HTTP_POST_VARS['logout']) ) && $userdata['session_logged_in'] )
160 {
161 // session id check
162 if ($sid == '' || $sid != $userdata['session_id'])
163 {
164 message_die(GENERAL_ERROR, 'Invalid_session');
165 }
166
167 if( $userdata['session_logged_in'] )
168 {
169 session_end($userdata['session_id'], $userdata['user_id']);
170 }
171
172 if (!empty($HTTP_POST_VARS['redirect']) || !empty($HTTP_GET_VARS['redirect']))
173 {
174 $url = (!empty($HTTP_POST_VARS['redirect'])) ? htmlspecialchars($HTTP_POST_VARS['redirect']) : htmlspecialchars($HTTP_GET_VARS['redirect']);
175 $url = str_replace('&', '&', $url);
176 redirect(append_sid($url, true));
177 }
178 else
179 {
180 redirect(append_sid("index.$phpEx", true));
181 }
182 }
183 else
184 {
185 $url = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : "index.$phpEx";
186 redirect(append_sid($url, true));
187 }
188 }
189 else
190 {
191 //
192 // Do a full login page dohickey if
193 // user not already logged in
194 //
195 if( !$userdata['session_logged_in'] || (isset($HTTP_GET_VARS['admin']) && $userdata['session_logged_in'] && $userdata['user_level'] == ADMIN))
196 {
197 $page_title = $lang['Login'];
198 include($phpbb_root_path . 'includes/page_header.'.$phpEx);
199
200 $template->set_filenames(array(
201 'body' => 'login_body.tpl')
202 );
203
204 $forward_page = '';
205
206 if( isset($HTTP_POST_VARS['redirect']) || isset($HTTP_GET_VARS['redirect']) )
207 {
208 $forward_to = $HTTP_SERVER_VARS['QUERY_STRING'];
209
210 if( preg_match("/^redirect=([a-z0-9\.#\/\?&=\+\-_]+)/si", $forward_to, $forward_matches) )
211 {
212 $forward_to = ( !empty($forward_matches[3]) ) ? $forward_matches[3] : $forward_matches[1];
213 $forward_match = explode('&', $forward_to);
214
215 if(count($forward_match) > 1)
216 {
217 for($i = 1; $i < count($forward_match); $i++)
218 {
219 if( !ereg("sid=", $forward_match[$i]) )
220 {
221 if( $forward_page != '' )
222 {
223 $forward_page .= '&';
224 }
225 $forward_page .= $forward_match[$i];
226 }
227 }
228 $forward_page = $forward_match[0] . '?' . $forward_page;
229 }
230 else
231 {
232 $forward_page = $forward_match[0];
233 }
234 }
235 }
236
237 $username = ( $userdata['user_id'] != ANONYMOUS ) ? $userdata['username'] : '';
238
239 $s_hidden_fields = '<input type="hidden" name="redirect" value="' . $forward_page . '" />';
240 $s_hidden_fields .= (isset($HTTP_GET_VARS['admin'])) ? '<input type="hidden" name="admin" value="1" />' : '';
241
242 make_jumpbox('viewforum.'.$phpEx);
243 $template->assign_vars(array(
244 'USERNAME' => $username,
245
246 'L_ENTER_PASSWORD' => (isset($HTTP_GET_VARS['admin'])) ? $lang['Admin_reauthenticate'] : $lang['Enter_password'],
247 'L_SEND_PASSWORD' => $lang['Forgotten_password'],
248
249 'U_SEND_PASSWORD' => append_sid("profile.$phpEx?mode=sendpassword"),
250
251 'S_HIDDEN_FIELDS' => $s_hidden_fields)
252 );
253
254 $template->pparse('body');
255
256 include($phpbb_root_path . 'includes/page_tail.'.$phpEx);
257 }
258 else
259 {
260 redirect(append_sid("index.$phpEx", true));
261 }
262
263 }
264
265 ?>