Code:<?php
/***************************************************************************
* sessions.php
* -------------------
* begin : Saturday, Feb 13, 2001
* copyright : (C) 2001 The phpBB Group
* email : support@phpbb.com
*
* $Id: sessions.php,v 1.58.2.11 2004/07/11 16:46:19 acydburn 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.
*
***************************************************************************/
if ( !defined('IN_PHPBB') )
{
die("Hacking attempt");
exit;
}
//
// 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)
{
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 = '';
}
$last_visit = 0;
$current_time = time();
$expiry_time = $current_time - $board_config['session_length'];
//
// Try and pull the last time stored in a cookie, if it exists
//
$sql = "SELECT *
FROM " . USERS_TABLE . "
WHERE user_id = '$user_id'";
if ( !($result = $db->sql_query($sql)) )
{
message_die(CRITICAL_ERROR, 'Could not obtain lastvisit data from user table', '', __LINE__, __FILE__, $sql);
}
$userdata = $db->sql_fetchrow($result);
if ( $user_id != ANONYMOUS )
{
$auto_login_key = $userdata['user_password'];
if ( $auto_create )
{
if ( isset($sessiondata['autologinid']) && $userdata['user_active'] )
{
// We have to login automagically
if( $sessiondata['autologinid'] == $auto_login_key )
{
// autologinid matches password
$login = 1;
$enable_autologin = 1;
}
else
{
// No match; don't login, set as anonymous user
$login = 0;
$enable_autologin = 0;
$user_id = $userdata['user_id'] = ANONYMOUS;
}
}
else
{
// Autologin is not set. Don't login, set as anonymous user
$login = 0;
$enable_autologin = 0;
$user_id = $userdata['user_id'] = ANONYMOUS;
}
}
else
{
$login = 1;
}
}
else
{
$login = 0;
$enable_autologin = 0;
}
//
// 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
WHERE session_id = '" . $session_id . "'
AND session_ip = '$user_ip'";
if ( !$db->sql_query($sql) || !$db->sql_affectedrows() )
{
$session_id = md5(uniqid($user_ip));
$sql = "INSERT INTO " . SESSIONS_TABLE . "
(session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in)
VALUES ('$session_id', '$user_id', '$current_time', '$current_time', '$user_ip', '$page_id', '$login')";
if ( !$db->sql_query($sql) )
{
$error = TRUE;
if (SQL_LAYER == "mysql" || SQL_LAYER == "mysql4")
{
$sql_error = $db->sql_error($result);
if ($sql_error["code"] == 1114)
{
$result = $db->sql_query('SHOW TABLE STATUS LIKE "'.SESSIONS_TABLE.'"');
$row = $db->sql_fetchrow($result);
if ($row["Type"] == "HEAP")
{
if ($row["Rows"] > 2500)
{
$delete_order = (SQL_LAYER=="mysql4") ? " ORDER BY session_time ASC" : "";
$db->sql_query("DELETE QUICK FROM ".SESSIONS_TABLE."$delete_order LIMIT 50");
}
else
{
$db->sql_query("ALTER TABLE ".SESSIONS_TABLE." MAX_ROWS=".($row["Rows"]+50));
}
if ($db->sql_query($sql))
{
$error = FALSE;
}
}
}
}
if ($error)
{
message_die(CRITICAL_ERROR, "Error creating new session", "", __LINE__, __FILE__, $sql);
}
}
}
if ( $user_id != ANONYMOUS )
{// ( $userdata['user_session_time'] > $expiry_time && $auto_create ) ? $userdata['user_lastvisit'] : (
$last_visit = ( $userdata['user_session_time'] > 0 ) ? $userdata['user_session_time'] : $current_time;
$sql = "UPDATE " . USERS_TABLE . "
SET user_session_time = $current_time, user_session_page = $page_id, user_lastvisit = $last_visit
WHERE user_id = '$user_id'";
if ( !$db->sql_query($sql) )
{
message_die(CRITICAL_ERROR, 'Error updating last visit time', '', __LINE__, __FILE__, $sql);
}
$userdata['user_lastvisit'] = $last_visit;
$sessiondata['autologinid'] = ( $enable_autologin && $sessionmethod == SESSION_METHOD_COOKIE ) ? $auto_login_key : '';
$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'] = $current_time;
setcookie($cookiename . '_data', serialize($sessiondata), $current_time + 31536000, $cookiepath, $cookiedomain, $cookiesecure);
setcookie($cookiename . '_sid', $session_id, 0, $cookiepath, $cookiedomain, $cookiesecure);
$SID = ( $sessionmethod == SESSION_METHOD_GET ) ? '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, $nukeuser)
{
global $db, $lang, $board_config, $session_id;
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))
{
$session_id = '';
}
if ( ($nukeuser != "") && ($userdata['session_logged_in'] == "" )) {
bblogin($nukeuser, $session_id);
} else {
$sessiondata = array();
}
//
// Does a session exist?
//
if ( !empty($session_id) )
{
//
// session_id exists so go ahead and attempt to grab all
// data in preparation
//
$sql = "SELECT u.*, s.*
FROM " . SESSIONS_TABLE . " s, " . USERS_TABLE . " u
WHERE s.session_id = '$session_id'
AND u.user_id = s.session_user_id";
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
//
if ( $current_time - $userdata['session_time'] > 60 )
{
$sql = "UPDATE " . SESSIONS_TABLE . "
SET session_time = '$current_time', session_page = '$thispage_id'
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 = " . $userdata['user_id'];
if ( !$db->sql_query($sql) )
{
message_die(CRITICAL_ERROR, 'Error updating sessions table', '', __LINE__, __FILE__, $sql);
}
}
//
// Delete expired sessions
//
$expiry_time = $current_time - $board_config['session_length'];
$sql = "DELETE FROM " . SESSIONS_TABLE . "
WHERE session_time < '$expiry_time'
AND session_id <> '$session_id'";
if ( !$db->sql_query($sql) )
{
message_die(CRITICAL_ERROR, 'Error clearing sessions table', '', __LINE__, __FILE__, $sql);
}
setcookie($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 $userdata;
}
//
// session_end closes out a session
// deleting the corresponding entry
// in the sessions table
//
function session_end($session_id, $user_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'];
$current_time = time();
//
// Pull cookiedata or grab the URI propagated sid
//
if ( isset($HTTP_COOKIE_VARS[$cookiename . '_sid']) )
{
$session_id = isset( $HTTP_COOKIE_VARS[$cookiename . '_sid'] ) ? $HTTP_COOKIE_VARS[$cookiename . '_sid'] : '';
$sessionmethod = SESSION_METHOD_COOKIE;
}
else
{
$session_id = ( isset($HTTP_GET_VARS['sid']) ) ? $HTTP_GET_VARS['sid'] : '';
$sessionmethod = SESSION_METHOD_GET;
}
if (!preg_match('/^[A-Za-z0-9]*$/', $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__, $sql);
}
setcookie($cookiename . '_data', '', $current_time - 31536000, $cookiepath, $cookiedomain, $cookiesecure);
setcookie($cookiename . '_sid', '', $current_time - 31536000, $cookiepath, $cookiedomain, $cookiesecure);
return true;
}
//
// 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, $admin, $userdata;
if (ereg("admin=1", $url) || ereg("admin_", $url) || ereg("pane=", $url)){
// The format is fine, don't change a thing.
} else if (ereg("Your_Account", $url)){
$url = str_replace(".php", "", $url); // Strip the .php from all the files,
$url = str_replace("modules", "modules.php", $url); // and put it back for the modules.php
}
else if (ereg("redirect", $url))
{
$url = str_replace("login.php", "modules.php?name=Your_Account", $url); // Strip the .php from all the files,
$url = str_replace(".php", "", $url); // Strip the .php from all the files,
$url = str_replace("?redirect", "&redirect", $url); // Strip the .php from all the files,
$url = str_replace("modules", "modules.php", $url); // and put it back for the modules.php
}
else if (ereg("menu=1", $url))
{
$url = str_replace("?", "&", $url); // As we are already in nuke, change the ? to &
$url = str_replace(".php", "", $url); // Strip the .php from all the files,
$url = "../../../modules.php?name=Forums&file=$url";
}
else if ((ereg("privmsg", $url)) && (!ereg("highlight=privmsg", $url)))
{
$url = str_replace("?", "&", $url); // As we are already in nuke, change the ? to &
$url = str_replace("privmsg.php", "modules.php?name=Private_Messages&file=index", $url); // and put it back for the modules.php
}
else if ((ereg("profile", $url)) && (!ereg("highlight", $url) && !ereg("profile", $url)))
{
$url = str_replace("?", "&", $url); // As we are already in nuke, change the ? to &
$url = str_replace("profile.php", "forums.html?file=profile", $url); // and put it back for the modules.php
$dummy = 1;
}
else if ((ereg("memberlist", $url)) && (!ereg("highlight=memberlist", $url)))
{
$url = str_replace("?", "&", $url); // As we are already in nuke, change the ? to &
$url = str_replace("memberlist.php", "modules.php?name=Members_List&file=index", $url); // and put it back for the modules.php
} else {
$url = str_replace("?", "&", $url); // As we are already in nuke, change the ? to &
$url = str_replace(".php", "", $url);
$url = "forums.html?file=".$url; //Change to Nuke format
}
if ($userdata['user_level'] > 1) {
if ( !empty($SID) && !eregi('sid=', $url) )
{
if ( !empty($SID) && !eregi('sid=', $url) ) {
$url .= ( ( strpos($url, '?') != false ) ? ( ( $non_html_amp ) ? '&' : '&' ) : '?' ) . $SID;
}
}
}
return($url);
}
function areyouabot()
{
global $HTTP_SERVER_VARS;
$RobotsList = array (
"antibot",
"appie",
"architext",
"bjaaland",
"digout4u",
"echo",
"fast-webcrawler",
"ferret",
"googlebot",
"gulliver",
"harvest",
"htdig",
"ia_archiver",
"jeeves",
"jennybot",
"linkwalker",
"lycos",
"mercator",
"moget",
"muscatferret",
"myweb",
"netcraft",
"nomad",
"petersnews",
"scooter",
"slurp",
"unlost_web_crawler",
"voila",
"voyager",
"webbase",
"weblayers",
"wget",
"wisenutbot",
"acme.spider",
"ahoythehomepagefinder",
"alkaline",
"arachnophilia",
"aretha",
"ariadne",
"arks",
"aspider",
"atn.txt",
"atomz",
"auresys",
"backrub",
"bigbrother",
"blackwidow",
"blindekuh",
"bloodhound",
"brightnet",
"bspider",
"cactvschemistryspider",
"cassandra",
"cgireader",
"checkbot",
"churl",
"cmc",
"collective",
"combine",
"conceptbot",
"coolbot",
"core",
"cosmos",
"cruiser",
"cusco",
"cyberspyder",
"deweb",
"dienstspider",
"digger",
"diibot",
"directhit",
"dnabot",
"download_express",
"dragonbot",
"dwcp",
"e-collector",
"ebiness",
"eit",
"elfinbot",
"emacs",
"emcspider",
"esther",
"evliyacelebi",
"nzexplorer",
"fdse",
"felix",
"fetchrover",
"fido",
"finnish",
"fireball",
"fouineur",
"francoroute",
"freecrawl",
"funnelweb",
"gama",
"gazz",
"gcreep",
"getbot",
"geturl",
"golem",
"grapnel",
"griffon",
"gromit",
"hambot",
"havindex",
"hometown",
"htmlgobble",
"hyperdecontextualizer",
"iajabot",
"ibm",
"iconoclast",
"ilse",
"imagelock",
"incywincy",
"informant",
"infoseek",
"infoseeksidewinder",
"infospider",
"inspectorwww",
"intelliagent",
"irobot",
"iron33",
"israelisearch",
"javabee",
"jbot",
"jcrawler",
"jobo",
"jobot",
"joebot",
"jubii",
"jumpstation",
"katipo",
"kdd",
"kilroy",
"ko_yappo_robot",
"labelgrabber.txt",
"larbin",
"legs",
"linkidator",
"linkscan",
"lockon",
"logo_gif",
"macworm",
"magpie",
"marvin",
"mattie",
"mediafox",
"merzscope",
"meshexplorer",
"mindcrawler",
"momspider",
"monster",
"motor",
"mwdsearch",
"netcarta",
"netmechanic",
"netscoop",
"newscan-online",
"nhse",
"northstar",
"occam",
"octopus",
"openfind",
"orb_search",
"packrat",
"pageboy",
"parasite",
"patric",
"pegasus",
"perignator",
"perlcrawler",
"phantom",
"piltdownman",
"pimptrain",
"pioneer",
"pitkow",
"pjspider",
"pka",
"plumtreewebaccessor",
"poppi",
"portalb",
"puu",
"python",
"raven",
"rbse",
"resumerobot",
"rhcs",
"roadrunner",
"robbie",
"robi",
"robofox",
"robozilla",
"roverbot",
"rules",
"safetynetrobot",
"search_au",
"searchprocess",
"senrigan",
"sgscout",
"shaggy",
"shaihulud",
"sift",
"simbot",
"site-valet",
"sitegrabber",
"sitetech",
"slcrawler",
"smartspider",
"snooper",
"solbot",
"spanner",
"speedy",
"spider_monkey",
"spiderbot",
"spiderline",
"spiderman",
"spiderview",
"spry",
"ssearcher",
"suke",
"suntek",
"sven",
"tach_bw",
"tarantula",
"tarspider",
"techbot",
"templeton",
"teoma_agent1",
"titin",
"titan",
"tkwww",
"tlspider",
"ucsd",
"udmsearch",
"urlck",
"valkyrie",
"victoria",
"visionsearch",
"vwbot",
"w3index",
"w3m2",
"wallpaper",
"wanderer",
"wapspider",
"webbandit",
"webcatcher",
"webcopy",
"webfetcher",
"webfoot",
"weblinker",
"webmirror",
"webmoose",
"webquest",
"webreader",
"webreaper",
"websnarf",
"webspider",
"webvac",
"webwalk",
"webwalker",
"webwatch",
"whatuseek",
"whowhere",
"wired-digital",
"wmir",
"wolp",
"wombat",
"worm",
"wwwc",
"wz101",
"xget",
"awbot",
"bobby",
"boris",
"bumblebee",
"cscrawler",
"daviesbot",
"ezresult",
"gigabot",
"gnodspider",
"internetseer",
"justview",
"linkbot",
"linkchecker",
"nederland.zoek",
"perman",
"pompos",
"psbot",
"redalert",
"shoutcast",
"slysearch",
"ultraseek",
"webcompass",
"yandex",
"robot",
"crawl"
);
$botID = strtolower($HTTP_SERVER_VARS['HTTP_USER_AGENT']);
for ($i = 0; $i < count($RobotsList); $i++)
{
if ( strstr($botID, $RobotsList[$i]) )
{
return TRUE;
}
}
return FALSE;
}
function admin_sid($url, $non_html_amp = false)
{
global $SID;
$url = "../../../modules.php?name=Forums&file=$url";
if ( !empty($SID) && !preg_match('#sid=#', $url) )
{
$url .= ( ( strpos($url, '?') != false ) ? ( ( $non_html_amp ) ? '&' : '&' ) : '?' ) . $SID;
}
return $url;
}
?>
|
![[Valid RSS]](https://www.ravenphpscripts.com/images/valid-rss.png "Validate my RSS feed"){kind=small}
