rendered paste body<?php//-- mod : categories hierarchy ------------------------------------------------/*************************************************************************** * sessions.php * ------------------- * begin : Saturday, Feb 13, 2001 * copyright : (C) 2001 The phpBB Group * email : support@phpbb.com * * $Id: sessions.php,v 1.58.2.23 2006/04/05 12:42:23 grahamje Exp $ * * ***************************************************************************//*************************************************************************** * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * ***************************************************************************///// Adds/updates a new session to the database for the given userid.// Returns the new session ID on success.//function session_begin($user_id, $user_ip, $page_id, $auto_create = 0, $enable_autologin = 0, $admin = 0){ global $db, $board_config; global $HTTP_COOKIE_VARS, $HTTP_GET_VARS, $SID; $cookiename = $board_config['cookie_name']; $cookiepath = $board_config['cookie_path']; $cookiedomain = $board_config['cookie_domain']; $cookiesecure = $board_config['cookie_secure']; if ( isset($HTTP_COOKIE_VARS[$cookiename . '_sid']) || isset($HTTP_COOKIE_VARS[$cookiename . '_data']) ) { $session_id = isset($HTTP_COOKIE_VARS[$cookiename . '_sid']) ? $HTTP_COOKIE_VARS[$cookiename . '_sid'] : ''; $sessiondata = isset($HTTP_COOKIE_VARS[$cookiename . '_data']) ? unserialize(stripslashes($HTTP_COOKIE_VARS[$cookiename . '_data'])) : array(); $sessionmethod = SESSION_METHOD_COOKIE; } else { $sessiondata = array(); $session_id = ( isset($HTTP_GET_VARS['sid']) ) ? $HTTP_GET_VARS['sid'] : ''; $sessionmethod = SESSION_METHOD_GET; } // if (!preg_match('/^[A-Za-z0-9]*$/', $session_id)) { $session_id = ''; } $page_id = (int) $page_id; $last_visit = 0; $current_time = time(); // // Are auto-logins allowed? // If allow_autologin is not set or is true then they are // (same behaviour as old 2.0.x session code) // if (isset($board_config['allow_autologin']) && !$board_config['allow_autologin']) { $enable_autologin = $sessiondata['autologinid'] = false; } // // First off attempt to join with the autologin value if we have one // If not, just use the user_id value // $userdata = array(); if ($user_id != ANONYMOUS) { if (isset($sessiondata['autologinid']) && (string) $sessiondata['autologinid'] != '' && $user_id) { //-- mod : categories hierarchy ------------------------------------------------//-- delete// $sql = "SELECT * // FROM " . USERS_TABLE . " // WHERE user_id = $user_id";//-- add $sql = 'SELECT u.*, g.* FROM ' . USERS_TABLE . ' u LEFT JOIN ' . GROUPS_TABLE . ' g ON g.group_user_id = u.user_id WHERE user_id = ' . intval($user_id);//-- fin mod : categories hierarchy -------------------------------------------- AND u.user_active = 1 AND k.user_id = u.user_id AND k.key_id = '" . md5($sessiondata['autologinid']) . "'"; if (!($result = $db->sql_query($sql))) { message_die(CRITICAL_ERROR, 'Error doing DB query userdata row fetch', '', __LINE__, __FILE__, $sql); } $userdata = $db->sql_fetchrow($result); $db->sql_freeresult($result); $enable_autologin = $login = 1; } else if (!$auto_create) { $sessiondata['autologinid'] = ''; $sessiondata['userid'] = $user_id; $sql = 'SELECT * FROM ' . USERS_TABLE . ' WHERE user_id = ' . (int) $user_id . ' AND user_active = 1'; if (!($result = $db->sql_query($sql))) { message_die(CRITICAL_ERROR, 'Error doing DB query userdata row fetch', '', __LINE__, __FILE__, $sql); } $userdata = $db->sql_fetchrow($result); $db->sql_freeresult($result); $login = 1; } } // // At this point either $userdata should be populated or // one of the below is true // * Key didn't match one in the DB // * User does not exist // * User is inactive // if (!sizeof($userdata) || !is_array($userdata) || !$userdata) { $sessiondata['autologinid'] = ''; $sessiondata['userid'] = $user_id = ANONYMOUS; $enable_autologin = $login = 0; $sql = 'SELECT * FROM ' . USERS_TABLE . ' WHERE user_id = ' . (int) $user_id; if (!($result = $db->sql_query($sql))) { message_die(CRITICAL_ERROR, 'Error doing DB query userdata row fetch', '', __LINE__, __FILE__, $sql); } $userdata = $db->sql_fetchrow($result); $db->sql_freeresult($result); } // // Initial ban check against user id, IP and email address // preg_match('/(..)(..)(..)(..)/', $user_ip, $user_ip_parts); $sql = "SELECT ban_ip, ban_userid, ban_email FROM " . BANLIST_TABLE . " WHERE ban_ip IN ('" . $user_ip_parts[1] . $user_ip_parts[2] . $user_ip_parts[3] . $user_ip_parts[4] . "', '" . $user_ip_parts[1] . $user_ip_parts[2] . $user_ip_parts[3] . "ff', '" . $user_ip_parts[1] . $user_ip_parts[2] . "ffff', '" . $user_ip_parts[1] . "ffffff') OR ban_userid = $user_id"; if ( $user_id != ANONYMOUS ) { $sql .= " OR ban_email LIKE '" . str_replace("\'", "''", $userdata['user_email']) . "' OR ban_email LIKE '" . substr(str_replace("\'", "''", $userdata['user_email']), strpos(str_replace("\'", "''", $userdata['user_email']), "@")) . "'"; } if ( !($result = $db->sql_query($sql)) ) { message_die(CRITICAL_ERROR, 'Could not obtain ban information', '', __LINE__, __FILE__, $sql); } if ( $ban_info = $db->sql_fetchrow($result) ) { if ( $ban_info['ban_ip'] || $ban_info['ban_userid'] || $ban_info['ban_email'] ) { message_die(CRITICAL_MESSAGE, 'You_been_banned'); } } // // Create or update the session // $sql = "UPDATE " . SESSIONS_TABLE . " SET session_user_id = $user_id, session_start = $current_time, session_time = $current_time, session_page = $page_id, session_logged_in = $login, session_admin = $admin WHERE session_id = '" . $session_id . "' AND session_ip = '$user_ip'"; if ( !$db->sql_query($sql) || !$db->sql_affectedrows() ) { $session_id = md5(dss_rand()); $sql = "INSERT INTO " . SESSIONS_TABLE . " (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('$session_id', $user_id, $current_time, $current_time, '$user_ip', $page_id, $login, $admin)"; if ( !$db->sql_query($sql) ) { message_die(CRITICAL_ERROR, 'Error creating new session', '', __LINE__, __FILE__, $sql); } } if ( $user_id != ANONYMOUS ) { $last_visit = ( $userdata['user_session_time'] > 0 ) ? $userdata['user_session_time'] : $current_time; if (!$admin) { $sql = "UPDATE " . USERS_TABLE . " SET user_session_time = $current_time, user_session_page = $page_id, user_lastvisit = $last_visit WHERE user_id = $user_id";//-- mod : categories hierarchy ------------------------------------------------//-- add $sql = str_replace('SET ', 'SET user_session_logged = ' . intval($login) . ', ', $sql);//-- fin mod : categories hierarchy -------------------------------------------- if ( !$db->sql_query($sql) ) { message_die(CRITICAL_ERROR, 'Error updating last visit time', '', __LINE__, __FILE__, $sql); } } $userdata['user_lastvisit'] = $last_visit; // // Regenerate the auto-login key // if ($enable_autologin) { $auto_login_key = dss_rand() . dss_rand(); if (isset($sessiondata['autologinid']) && (string) $sessiondata['autologinid'] != '') { $sql = 'UPDATE ' . SESSIONS_KEYS_TABLE . " SET last_ip = '$user_ip', key_id = '" . md5($auto_login_key) . "', last_login = $current_time WHERE key_id = '" . md5($sessiondata['autologinid']) . "'"; } else { $sql = 'INSERT INTO ' . SESSIONS_KEYS_TABLE . "(key_id, user_id, last_ip, last_login) VALUES ('" . md5($auto_login_key) . "', $user_id, '$user_ip', $current_time)"; } if ( !$db->sql_query($sql) ) { message_die(CRITICAL_ERROR, 'Error updating session key', '', __LINE__, __FILE__, $sql); } $sessiondata['autologinid'] = $auto_login_key; unset($auto_login_key); } else { $sessiondata['autologinid'] = ''; }// $sessiondata['autologinid'] = (!$admin) ? (( $enable_autologin && $sessionmethod == SESSION_METHOD_COOKIE ) ? $auto_login_key : '') : $sessiondata['autologinid']; $sessiondata['userid'] = $user_id; } $userdata['session_id'] = $session_id; $userdata['session_ip'] = $user_ip; $userdata['session_user_id'] = $user_id; $userdata['session_logged_in'] = $login; $userdata['session_page'] = $page_id; $userdata['session_start'] = $current_time; $userdata['session_time'] = $current_time; $userdata['session_admin'] = $admin; $userdata['session_key'] = $sessiondata['autologinid']; setcookie($cookiename . '_data', serialize($sessiondata), $current_time + 31536000, $cookiepath, $cookiedomain, $cookiesecure); setcookie($cookiename . '_sid', $session_id, 0, $cookiepath, $cookiedomain, $cookiesecure); $SID = 'sid=' . $session_id; return $userdata;}//// Checks for a given user session, tidies session table and updates user// sessions at each page refresh//function session_pagestart($user_ip, $thispage_id){ global $db, $lang, $board_config; global $HTTP_COOKIE_VARS, $HTTP_GET_VARS, $SID; $cookiename = $board_config['cookie_name']; $cookiepath = $board_config['cookie_path']; $cookiedomain = $board_config['cookie_domain']; $cookiesecure = $board_config['cookie_secure']; $current_time = time(); unset($userdata); if ( isset($HTTP_COOKIE_VARS[$cookiename . '_sid']) || isset($HTTP_COOKIE_VARS[$cookiename . '_data']) ) { $sessiondata = isset( $HTTP_COOKIE_VARS[$cookiename . '_data'] ) ? unserialize(stripslashes($HTTP_COOKIE_VARS[$cookiename . '_data'])) : array(); $session_id = isset( $HTTP_COOKIE_VARS[$cookiename . '_sid'] ) ? $HTTP_COOKIE_VARS[$cookiename . '_sid'] : ''; $sessionmethod = SESSION_METHOD_COOKIE; } else { $sessiondata = array(); $session_id = ( isset($HTTP_GET_VARS['sid']) ) ? $HTTP_GET_VARS['sid'] : ''; $sessionmethod = SESSION_METHOD_GET; } // if (!preg_match('/^[A-Za-z0-9]*$/', $session_id)) { $session_id = ''; } $thispage_id = (int) $thispage_id; // // Does a session exist? // if ( !empty($session_id) ) { // // session_id exists so go ahead and attempt to grab all // data in preparation // //-- mod : categories hierarchy ------------------------------------------------//-- delete// $sql = "SELECT u.*, s.*// FROM " . SESSIONS_TABLE . " s, " . USERS_TABLE . " u// WHERE s.session_id = '$session_id'// AND u.user_id = s.session_user_id";//-- add $sql = 'SELECT u.*, s.*, g.* FROM ' . SESSIONS_TABLE . ' s, ' . USERS_TABLE . ' u LEFT JOIN ' . GROUPS_TABLE . ' g ON g.group_user_id = u.user_id WHERE s.session_id = \'' . $session_id . '\' AND u.user_id = s.session_user_id';//-- fin mod : categories hierarchy -------------------------------------------- if ( !($result = $db->sql_query($sql)) ) { message_die(CRITICAL_ERROR, 'Error doing DB query userdata row fetch', '', __LINE__, __FILE__, $sql); } $userdata = $db->sql_fetchrow($result); // // Did the session exist in the DB? // if ( isset($userdata['user_id']) ) { // // Do not check IP assuming equivalence, if IPv4 we'll check only first 24 // bits ... I've been told (by vHiker) this should alleviate problems with // load balanced et al proxies while retaining some reliance on IP security. // $ip_check_s = substr($userdata['session_ip'], 0, 6); $ip_check_u = substr($user_ip, 0, 6); if ($ip_check_s == $ip_check_u) { $SID = ($sessionmethod == SESSION_METHOD_GET || defined('IN_ADMIN')) ? 'sid=' . $session_id : ''; // // Only update session DB a minute or so after last update ////-- mod : categories hierarchy ------------------------------------------------//-- add // actually we prefer a more accurate information for viewonline if ( $userdata['user_session_page'] != $thispage_id ) { $userdata['session_time'] = $current_time - 61; } // trace this is not a new session global $sys_updated_session; $sys_updated_session = true;//-- fin mod : categories hierarchy -------------------------------------------- if ( $current_time - $userdata['session_time'] > 60 ) { // A little trick to reset session_admin on session re-usage $update_admin = (!defined('IN_ADMIN') && $current_time - $userdata['session_time'] > ($board_config['session_length']+60)) ? ', session_admin = 0' : ''; $sql = "UPDATE " . SESSIONS_TABLE . " SET session_time = $current_time, session_page = $thispage_id$update_admin WHERE session_id = '" . $userdata['session_id'] . "'"; if ( !$db->sql_query($sql) ) { message_die(CRITICAL_ERROR, 'Error updating sessions table', '', __LINE__, __FILE__, $sql); } if ( $userdata['user_id'] != ANONYMOUS ) { $sql = "UPDATE " . USERS_TABLE . " SET user_session_time = $current_time, user_session_page = $thispage_id WHERE user_id = " . $userdata['user_id'];//-- mod : categories hierarchy ------------------------------------------------//-- add $sql = str_replace('SET ', 'SET user_session_logged = ' . true . ', ', $sql);//-- fin mod : categories hierarchy -------------------------------------------- if ( !$db->sql_query($sql) ) { message_die(CRITICAL_ERROR, 'Error updating sessions table', '', __LINE__, __FILE__, $sql); } } session_clean($userdata['session_id']); setcookie($cookiename . '_data', serialize($sessiondata), $current_time + 31536000, $cookiepath, $cookiedomain, $cookiesecure); setcookie($cookiename . '_sid', $session_id, 0, $cookiepath, $cookiedomain, $cookiesecure); } return $userdata; } } } // // If we reach here then no (valid) session exists. So we'll create a new one, // using the cookie user_id if available to pull basic user prefs. // $user_id = ( isset($sessiondata['userid']) ) ? intval($sessiondata['userid']) : ANONYMOUS; if ( !($userdata = session_begin($user_id, $user_ip, $thispage_id, TRUE)) ) { message_die(CRITICAL_ERROR, 'Error creating user session', '', __LINE__, __FILE__, $sql); } return $userdata;}/*** Terminates the specified session* It will delete the entry in the sessions table for this session,* remove the corresponding auto-login key and reset the cookies*/function session_end($session_id, $user_id){ global $db, $lang, $board_config, $userdata; global $HTTP_COOKIE_VARS, $HTTP_GET_VARS, $SID; $cookiename = $board_config['cookie_name']; $cookiepath = $board_config['cookie_path']; $cookiedomain = $board_config['cookie_domain']; $cookiesecure = $board_config['cookie_secure']; $current_time = time(); if (!preg_match('/^[A-Za-z0-9]*$/', $session_id)) { return; } // // Delete existing session // $sql = 'DELETE FROM ' . SESSIONS_TABLE . " WHERE session_id = '$session_id' AND session_user_id = $user_id"; if ( !$db->sql_query($sql) ) { message_die(CRITICAL_ERROR, 'Error removing user session', '', __LINE__, __FILE__, $sql); }//-- mod : categories hierarchy ------------------------------------------------//-- add if ( $user_id != ANONYMOUS ) { $sql = 'UPDATE ' . USERS_TABLE . ' SET user_session_logged = 0 WHERE user_id = ' . intval($user_id); $db->sql_query($sql, false, __LINE__, __FILE__); }//-- fin mod : categories hierarchy -------------------------------------------- // // Remove this auto-login entry (if applicable) // if ( isset($userdata['session_key']) && $userdata['session_key'] != '' ) { $autologin_key = md5($userdata['session_key']); $sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . ' WHERE user_id = ' . (int) $user_id . " AND key_id = '$autologin_key'"; if ( !$db->sql_query($sql) ) { message_die(CRITICAL_ERROR, 'Error removing auto-login key', '', __LINE__, __FILE__, $sql); } } // // We expect that message_die will be called after this function, // but just in case it isn't, reset $userdata to the details for a guest // $sql = 'SELECT * FROM ' . USERS_TABLE . ' WHERE user_id = ' . ANONYMOUS; if ( !($result = $db->sql_query($sql)) ) { message_die(CRITICAL_ERROR, 'Error obtaining user details', '', __LINE__, __FILE__, $sql); } if ( !($userdata = $db->sql_fetchrow($result)) ) { message_die(CRITICAL_ERROR, 'Error obtaining user details', '', __LINE__, __FILE__, $sql); } $db->sql_freeresult($result); setcookie($cookiename . '_data', '', $current_time - 31536000, $cookiepath, $cookiedomain, $cookiesecure); setcookie($cookiename . '_sid', '', $current_time - 31536000, $cookiepath, $cookiedomain, $cookiesecure); return true;}/*** Removes expired sessions and auto-login keys from the database*/function session_clean($session_id){ global $board_config, $db; // // Delete expired sessions // $sql = 'DELETE FROM ' . SESSIONS_TABLE . ' WHERE session_time < ' . (time() - (int) $board_config['session_length']) . " AND session_id <> '$session_id'"; if ( !$db->sql_query($sql) ) { message_die(CRITICAL_ERROR, 'Error clearing sessions table', '', __LINE__, __FILE__, $sql); } // // Delete expired auto-login keys // If max_autologin_time is not set then keys will never be deleted // (same behaviour as old 2.0.x session code) // if (!empty($board_config['max_autologin_time']) && $board_config['max_autologin_time'] > 0) { $sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . ' WHERE last_login < ' . (time() - (86400 * (int) $board_config['max_autologin_time'])); $db->sql_query($sql); } return true;}/*** Reset all login keys for the specified user* Called on password changes*/function session_reset_keys($user_id, $user_ip){ global $db, $userdata; $key_sql = ($user_id == $userdata['user_id'] && !empty($userdata['session_key'])) ? "AND key_id != '" . md5($userdata['session_key']) . "'" : ''; $sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . ' WHERE user_id = ' . (int) $user_id . " $key_sql"; if ( !$db->sql_query($sql) ) { message_die(CRITICAL_ERROR, 'Error removing auto-login keys', '', __LINE__, __FILE__, $sql); } $where_sql = 'session_user_id = ' . (int) $user_id; $where_sql .= ($user_id == $userdata['user_id']) ? " AND session_id <> '" . $userdata['session_id'] . "'" : ''; $sql = 'DELETE FROM ' . SESSIONS_TABLE . " WHERE $where_sql"; if ( !$db->sql_query($sql) ) { message_die(CRITICAL_ERROR, 'Error removing user session(s)', '', __LINE__, __FILE__, $sql); } if ( !empty($key_sql) ) { $auto_login_key = dss_rand() . dss_rand(); $current_time = time(); $sql = 'UPDATE ' . SESSIONS_KEYS_TABLE . " SET last_ip = '$user_ip', key_id = '" . md5($auto_login_key) . "', last_login = $current_time WHERE key_id = '" . md5($userdata['session_key']) . "'"; if ( !$db->sql_query($sql) ) { message_die(CRITICAL_ERROR, 'Error updating session key', '', __LINE__, __FILE__, $sql); } // And now rebuild the cookie $sessiondata['userid'] = $user_id; $sessiondata['autologinid'] = $autologin_id; $cookiename = $board_config['cookie_name']; $cookiepath = $board_config['cookie_path']; $cookiedomain = $board_config['cookie_domain']; $cookiesecure = $board_config['cookie_secure']; setcookie($cookiename . '_data', serialize($sessiondata), $current_time + 31536000, $cookiepath, $cookiedomain, $cookiesecure); $userdata['session_key'] = $auto_login_key; unset($sessiondata); unset($auto_login_key); }}//// Append $SID to a url. Borrowed from phplib and modified. This is an// extra routine utilised by the session code above and acts as a wrapper// around every single URL and form action. If you replace the session// code you must include this routine, even if it's empty.//function append_sid($url, $non_html_amp = false){ global $SID; if ( !empty($SID) && !preg_match('#sid=#', $url) ) { $url .= ( ( strpos($url, '?') !== false ) ? ( ( $non_html_amp ) ? '&' : '&' ) : '?' ) . $SID; } return $url;}?>