Here it is:
<?php
/**************************************************************************
* *
* 4images - A Web Based Image Gallery Management System *
* ---------------------------------------------------------------- *
* *
* File: sessions.php *
* Copyright: (C) 2002 Jan Sorgalla *
* Email: jan@4homepages.de *
* Web: http://www.4homepages.de *
* Scriptversion: 1.7.2 *
* *
* Never released without support from: Nicky (http://www.nicky.net) *
* *
**************************************************************************
* *
* Dieses Script ist KEINE Freeware. Bitte lesen Sie die Lizenz- *
* bedingungen (Lizenz.txt) für weitere Informationen. *
* --------------------------------------------------------------- *
* This script is NOT freeware! Please read the Copyright Notice *
* (Licence.txt) for further information. *
* *
*************************************************************************/
if (!defined('ROOT_PATH')) {
die("Security violation");
}
//-----------------------------------------------------
//--- Start Configuration -----------------------------
//-----------------------------------------------------
define('SESSION_NAME', 'sessionid');
$user_table_fields = array(
"user_id" => "user_id",
"user_level" => "user_level",
"user_name" => "user_name",
"user_password" => "user_password",
"user_email" => "user_email",
"user_showemail" => "user_showemail",
"user_allowemails" => "user_allowemails",
"user_invisible" => "user_invisible",
"user_joindate" => "user_joindate",
"user_activationkey" => "user_activationkey",
"user_lastaction" => "user_lastaction",
"user_location" => "user_location",
"user_lastvisit" => "user_lastvisit",
"user_comments" => "user_comments",
"user_homepage" => "user_homepage",
"user_icq" => "user_icq"
);
//-----------------------------------------------------
//--- End Configuration -------------------------------
//-----------------------------------------------------
function get_user_table_field($add, $user_field) {
global $user_table_fields;
return (!empty($user_table_fields[$user_field])) ? $add.$user_table_fields[$user_field] : "";
}
class Session {
var $session_id;
var $user_ip;
var $user_location;
var $current_time;
var $session_timeout;
var $mode = "get";
var $session_info = array();
var $user_info = array();
function Session() {
global $config;
$this->session_timeout = $config['session_timeout'] * 60;
$this->user_ip = $this->get_user_ip();
$this->user_location = $this->get_user_location();
$this->current_time = time();
// Stop adding SID to URLs
@ini_set('session.use_trans_sid', 0);
//@ini_set('session.cookie_lifetime', $this->session_timeout);
session_name(urlencode(SESSION_NAME));
session_start();
$this->demand_session();
}
function set_cookie_data($name, $value, $permanent = 1) {
$cookie_expire = ($permanent) ? $this->current_time + 60 * 60 * 24 * 365 : 0;
$cookie_name = COOKIE_NAME.$name;
setcookie($cookie_name, $value, $cookie_expire, COOKIE_PATH, COOKIE_DOMAIN, COOKIE_SECURE);
}
function read_cookie_data($name) {
global $HTTP_COOKIE_VARS;
$cookie_name = COOKIE_NAME.$name;
return (isset($HTTP_COOKIE_VARS[$cookie_name])) ? $HTTP_COOKIE_VARS[$cookie_name] : false;
}
function get_session_id() {
if (SID == '') {
$this->mode = "cookie";
}
$this->session_id = preg_replace('/[^a-z0-9]+/i', '', session_id());
}
function demand_session() {
$this->get_session_id();
if (!$this->load_session_info()) {
$this->delete_old_sessions();
$user_id = ($this->read_cookie_data("userid")) ? intval($this->read_cookie_data("userid")) : GUEST;
$this->start_session($user_id);
}
else {
$this->user_info = $this->load_user_info($this->session_info['session_user_id']);
$update_cutoff = ($this->user_info['user_id'] != GUEST) ? $this->current_time - $this->user_info['user_lastaction'] : $this->current_time - $this->session_info['session_lastaction'];
if ($update_cutoff > 60) {
$this->update_session();
$this->delete_old_sessions();
}
}
}
function start_session($user_id = GUEST, $login_process = 0) {
global $site_db;
$this->user_info = $this->load_user_info($user_id);
if ($this->user_info['user_id'] != GUEST && !$login_process) {
if ($this->read_cookie_data("userpass") === $this->user_info['user_password'] && $this->user_info['user_level'] > USER_AWAITING) {
$this->set_cookie_data("userpass", $this->user_info['user_password']);
}
else {
$this->set_cookie_data("userpass", "", 0);
$this->user_info = $this->load_user_info(GUEST);
}
}
//if (!$login_process) {
$sql = "REPLACE INTO ".SESSIONS_TABLE."
(session_id, session_user_id, session_lastaction, session_location, session_ip)
VALUES
('$this->session_id', ".$this->user_info['user_id'].", $this->current_time, '$this->user_location', '$this->user_ip')";
$site_db->query($sql);
//}
$this->session_info['session_user_id'] = $this->user_info['user_id'];
$this->session_info['session_lastaction'] = $this->current_time;
$this->session_info['session_location'] = $this->user_location;
$this->session_info['session_ip'] = $this->user_ip;
if ($this->user_info['user_id'] != GUEST) {
$this->user_info['user_lastvisit'] = (!empty($this->user_info['user_lastaction'])) ? $this->user_info['user_lastaction'] : $this->current_time;
$sql = "UPDATE ".USERS_TABLE."
SET ".get_user_table_field("", "user_lastaction")." = $this->current_time, ".get_user_table_field("", "user_location")." = '$this->user_location', ".get_user_table_field("", "user_lastvisit")." = ".$this->user_info['user_lastvisit']."
WHERE ".get_user_table_field("", "user_id")." = ".$this->user_info['user_id'];
$site_db->query($sql);
}
$this->set_cookie_data("lastvisit", $this->user_info['user_lastvisit']);
$this->set_cookie_data("userid", $this->user_info['user_id']);
return true;
}
function login($user_name = "", $user_password = "", $auto_login = 0, $set_auto_login = 1) {
global $site_db, $user_table_fields;
if (empty($user_name) || empty($user_password)) {
return false;
}
$sql = "SELECT ".get_user_table_field("", "user_id").get_user_table_field(", ", "user_password")."
FROM ".USERS_TABLE."
WHERE ".get_user_table_field("", "user_name")." = '$user_name' AND ".get_user_table_field("", "user_level")." <> ".USER_AWAITING;
$row = $site_db->query_firstrow($sql);
$user_id = (isset($row[$user_table_fields['user_id']])) ? $row[$user_table_fields['user_id']] : GUEST;
$user_password = md5($user_password);
if ($user_id != GUEST) {
if ($row[$user_table_fields['user_password']] == $user_password) {
$sql = "UPDATE ".SESSIONS_TABLE."
SET session_user_id = $user_id
WHERE session_id = '$this->session_id'";
$site_db->query($sql);
if ($set_auto_login) {
$this->set_cookie_data("userpass", ($auto_login) ? $user_password : "");
}
$this->start_session($user_id, 1);
return true;
}
}
return false;
}
function logout($user_id) {
global $site_db;
$sql = "DELETE FROM ".SESSIONS_TABLE."
WHERE session_id = '$this->session_id' OR session_user_id = $user_id";
$site_db->query($sql);
$this->set_cookie_data("userpass", "", 0);
$this->set_cookie_data("userid", GUEST);
$this->session_info = array();
return true;
}
function delete_old_sessions() {
global $site_db;
$expiry_time = $this->current_time - $this->session_timeout;
$sql = "DELETE FROM ".SESSIONS_TABLE."
WHERE session_lastaction < $expiry_time";
$site_db->query($sql);
return true;
}
function update_session() {
global $site_db;
$sql = "REPLACE INTO ".SESSIONS_TABLE."
(session_id, session_user_id, session_lastaction, session_location, session_ip)
VALUES
('$this->session_id', ".$this->user_info['user_id'].", $this->current_time, '$this->user_location', '$this->user_ip')";
$site_db->query($sql);
$this->session_info['session_lastaction'] = $this->current_time;
$this->session_info['session_location'] = $this->user_location;
$this->session_info['session_ip'] = $this->user_ip;
if ($this->user_info['user_id'] != GUEST) {
$sql = "UPDATE ".USERS_TABLE."
SET ".get_user_table_field("", "user_lastaction")." = $this->current_time, ".get_user_table_field("", "user_location")." = '$this->user_location'
WHERE ".get_user_table_field("", "user_id")." = ".$this->user_info['user_id'];
$site_db->query($sql);
}
return;
}
function generate_session_id() {
return session_id();
}
function return_session_info() {
return $this->session_info;
}
function return_user_info() {
return $this->user_info;
}
function freeze() {
return;
}
function load_session_info() {
if (@ini_get('register_globals')) {
session_register('__session');
if (!isset($GLOBALS['__session'])) {
$GLOBALS['__session'] = array();
}
$this->session_info = &$GLOBALS['__session'];
} else {
if (isset($_SESSION)) {
if (!isset($_SESSION['__session'])) {
$_SESSION['__session'] = array();
}
$this->session_info = &$_SESSION['__session'];
} else {
if (!isset($GLOBALS['HTTP_SESSION_VARS']['__session'])) {
$GLOBALS['HTTP_SESSION_VARS']['__session'] = array();
}
$this->session_info = &$GLOBALS['HTTP_SESSION_VARS']['__session'];
}
}
if (!isset($this->session_info['session_ip'])) {
$this->session_info = array();
return false;
}
if ($this->mode == "get" && $this->session_info['session_ip'] != $this->user_ip) {
if (function_exists('session_regenerate_id')) {
@session_regenerate_id();
}
$this->get_session_id();
$this->session_info = array();
return false;
}
return $this->session_info;
}
function load_user_info($user_id = GUEST) {
global $site_db, $user_table_fields;
if ($user_id != GUEST) {
$sql = "SELECT u.*, l.*
FROM ".USERS_TABLE." u, ".LIGHTBOXES_TABLE." l
WHERE ".get_user_table_field("u.", "user_id")." = $user_id AND l.user_id = ".get_user_table_field("u.", "user_id");
$user_info = $site_db->query_firstrow($sql);
if (!$user_info) {
$sql = "SELECT *
FROM ".USERS_TABLE."
WHERE ".get_user_table_field("", "user_id")." = $user_id";
$user_info = $site_db->query_firstrow($sql);
if ($user_info) {
$lightbox_id = get_random_key(LIGHTBOXES_TABLE, "lightbox_id");
$sql = "INSERT INTO ".LIGHTBOXES_TABLE."
(lightbox_id, user_id, lightbox_lastaction, lightbox_image_ids)
VALUES
('$lightbox_id', ".$user_info[$user_table_fields['user_id']].", $this->current_time, '')";
$site_db->query($sql);
$user_info['lightbox_lastaction'] = $this->current_time;
$user_info['lightbox_image_ids'] = "";
}
}
}
if (empty($user_info[$user_table_fields['user_id']])) {
$user_info = array();
$user_info['user_id'] = GUEST;
$user_info['user_level'] = GUEST;
$user_info['user_lastaction'] = $this->current_time;
$user_info['user_lastvisit'] = ($this->read_cookie_data("lastvisit")) ? $this->read_cookie_data("lastvisit") : $this->current_time;
}
foreach ($user_table_fields as $key => $val) {
if (isset($user_info[$val])) {
$user_info[$key] = $user_info[$val];
}
elseif (!isset($user_info[$key])) {
$user_info[$key] = "";
}
}
return $user_info;
}
function set_session_var($var_name, $value) {
$this->session_info[$var_name] = $value;
return true;
}
function get_session_var($var_name) {
if (isset($this->session_info[$var_name])) {
return $this->session_info[$var_name];
}
return '';
}
function drop_session_var($var_name) {
unset($this->session_info[$var_name]);
}
function get_user_ip() {
global $HTTP_SERVER_VARS, $HTTP_ENV_VARS;
$ip = (!empty($HTTP_SERVER_VARS['REMOTE_ADDR'])) ? $HTTP_SERVER_VARS['REMOTE_ADDR'] : ((!empty($HTTP_ENV_VARS['REMOTE_ADDR'])) ? $HTTP_ENV_VARS['REMOTE_ADDR'] : getenv("REMOTE_ADDR"));
$ip = preg_replace("/[^\.0-9]+/", "", $ip);
return substr($ip, 0, 50);
}
function get_user_location() {
global $self_url;
return (defined("IN_CP")) ? "Control Panel" : preg_replace(array("/([?|&])action=[^?|&]*/", "/([?|&])mode=[^?|&]*/", "/([?|&])phpinfo=[^?|&]*/", "/([?|&])printstats=[^?|&]*/", "/[?|&]".URL_ID."=[^?|&]*/", "/[?|&]l=[^?|&]*/", "/[&?]+$/"), array("", "", "", "", "", "", ""), addslashes($self_url));
}
function url($url, $amp = "&") {
global $l;
$dummy_array = explode("#", $url);
$url = $dummy_array[0];
if ($this->mode == "get" && strpos($url, $this->session_id) === false) {
$url .= strpos($url, '?') !== false ? $amp : "?";
$url .= SESSION_NAME."=".$this->session_id;
}
if (!empty($l)) {
$url .= strpos($url, '?') !== false ? $amp : "?";
$url .= "l=".$l;
}
$url .= (isset($dummy_array[1])) ? "#".$dummy_array[1] : "";
return $url;
}
} //end of class
//-----------------------------------------------------
//--- Start Session -----------------------------------
//-----------------------------------------------------
define('COOKIE_NAME', '4images_');
define('COOKIE_PATH', '/');
define('COOKIE_DOMAIN', '');
define('COOKIE_SECURE', '0');
$site_sess = new Session();
// Get Userinfo
$session_info = $site_sess->return_session_info();
$user_info = $site_sess->return_user_info();
//-----------------------------------------------------
//--- Get User Caches ---------------------------------
//-----------------------------------------------------
$num_total_online = 0;
$num_visible_online = 0;
$num_invisible_online = 0;
$num_registered_online = 0;
$num_guests_online = 0;
$user_online_list = "";
$prev_user_ids = array();
$prev_session_ips = array();
if (defined("GET_USER_ONLINE") && ($config['display_whosonline'] == 1 || $user_info['user_level'] == ADMIN)) {
$time_out = time() - 300;
$sql = "SELECT s.session_user_id, s.session_lastaction, s.session_ip".get_user_table_field(", u.", "user_id").get_user_table_field(", u.", "user_level").get_user_table_field(", u.", "user_name").get_user_table_field(", u.", "user_invisible")."
FROM ".SESSIONS_TABLE." s
LEFT JOIN ".USERS_TABLE." u ON (".get_user_table_field("u.", "user_id")." = s.session_user_id)
WHERE s.session_lastaction >= $time_out
ORDER BY ".get_user_table_field("u.", "user_id")." ASC, s.session_ip ASC";
$result = $site_db->query($sql);
while ($row = $site_db->fetch_array($result)) {
if ($row['session_user_id'] != GUEST && (isset($row[$user_table_fields['user_id']]) && $row[$user_table_fields['user_id']] != GUEST)) {
if (!isset($prev_user_ids[$row['session_user_id']])) {
$is_invisible = (isset($row[$user_table_fields['user_invisible']]) && $row[$user_table_fields['user_invisible']] == 1) ? 1 : 0;
$invisibleuser = ($is_invisible) ? "*" : "";
$username = (isset($row[$user_table_fields['user_level']]) && $row[$user_table_fields['user_level']] == ADMIN && $config['highlight_admin'] == 1) ? sprintf("<b>%s</b>", $row[$user_table_fields['user_name']]) : $row[$user_table_fields['user_name']];
if (!$is_invisible || $user_info['user_level'] == ADMIN) {
$user_online_list .= ($user_online_list != "") ? ", " : "";
$user_profile_link = (!empty($url_show_profile)) ? preg_replace("/{user_id}/", $row['session_user_id'], $url_show_profile) : ROOT_PATH."member.php?action=showprofile&".URL_USER_ID."=".$row['session_user_id'];
$user_online_list .= "<a href=\"".$site_sess->url($user_profile_link)."\">".$username."</a>".$invisibleuser;
}
(!$is_invisible) ? $num_visible_online++ : $num_invisible_online++;
$num_registered_online++;
}
$prev_user_ids[$row['session_user_id']] = 1;
}
else {
if (!isset($prev_session_ips[$row['session_ip']])) {
$num_guests_online++;
}
}
$prev_session_ips[$row['session_ip']] = 1;
}
$num_total_online = $num_registered_online + $num_guests_online;
//$num_invisible_online = $num_registered_online - $num_visible_online;
$site_template->register_vars(array(
"num_total_online" => $num_total_online,
"num_invisible_online" => $num_invisible_online,
"num_registered_online" => $num_registered_online,
"num_guests_online" => $num_guests_online,
"user_online_list" => $user_online_list,
"lang_user_online" => str_replace('{num_total_online}', $num_total_online, $lang['user_online']),
"lang_user_online_detail" => str_replace(array('{num_registered_online}','{num_invisible_online}','{num_guests_online}'), array($num_registered_online,$num_invisible_online,$num_guests_online), $lang['user_online_detail']),
));
$whos_online = $site_template->parse_template("whos_online");
$site_template->register_vars("whos_online", $whos_online);
unset($whos_online);
unset($prev_user_ids);
unset($prev_session_ips);
}
?>
