Fatal error: Call to undefined function: .......

[burn-hard]

.....\includes\sessions.php on line 364

Hallo zusammen,

nachdem ich mein Forum 2.0.16, welches mit dem ein oder anderen Mod verändert wurde, manuell auf 2.0.17, 2.0.18 und dann auf 2.0.19 geupdatet habe, erscheint hin und wieder die folgende Fehlermeldung:

Fatal error: Call to undefined function: session_clean() in ..\includes\sessions.php on line 364

Der Fehler tritt aber nur manchmal auf, insbesondere dann, wenn ich eine kurze Zeit, etwa 40-60 Sekunden, nichts im Forum unternommen habe.
Zunächst ging ich davon aus, dass der Fehler auch in der entsprechenden Datei in Zeile 364 zu finden sei, aber im dortigen Eintrag kann ich keinen Fehler erkennen.
Was auch recht interessant ist, dass der Fehler sich erübrigt, sobald ich im Browser die Rücktaste drücke und anschliessend den Befehl (der zuvor den Fehler auslöste) wiederhole; denn dann macht das Forum komischer weise alles richtig.

Ich hoffe mir kann jemand helfen und ein paar Anhaltspunkte nennen, wie ich solch einen Fehler finden und beheben kann.

Liebe Grüße

burn-hard

Ach so:
Die Fehlermeldung erhalte ich unter Xampp nur mit dem selbst geupdateten 2.0.19. Eine jungfäuliche Version verursacht diesen Fehler nicht.

[hagily]

Hallo

Verlinke bitte einmal die sessions.php
KB:datei

[burn-hard]

Servus hagily,

das ist der Inhalt der Sessions.php

<?php
/***************************************************************************
* sessions.php
* -------------------
* begin : Saturday, Feb 13, 2001
* copyright : (C) 2001 The phpBB Group
* email : support@phpbb.com
*
* $Id: sessions.php,v 1.58.2.13 2005/03/15 18:24:37 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.
*
***************************************************************************/

//
// 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 = '';
}

$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)
{
$sql = 'SELECT u.*
FROM ' . USERS_TABLE . ' u, ' . SESSIONS_KEYS_TABLE . ' k
WHERE u.user_id = ' . (int) $user_id . "
AND u.user_active = 1
AND k.user_id = u.user_id
AND k.key_id = '" . md5($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
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) )
{
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;

$sql = "UPDATE " . USERS_TABLE . "
SET user_session_time = $current_time, user_session_page = $page_id, user_lastvisit = $last_visit, user_lastlogon = " . time() . ", user_totallogon=user_totallogon+1
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;

//
// Regenerate the auto-login key
//
if ($enable_autologin)
{
list($sec, $usec) = explode(' ', microtime());
mt_srand(hexdec(substr($session_id, 0, ) + (float) $sec + ((float) $usec * 1000000));
$auto_login_key = uniqid(mt_rand(), true);

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'];
//
}

$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 = '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) )
{
// Start add - Last visit MOD
$expiry_time = $current_time - $board_config['session_length'] ;
// End add - Last visit MOD
//
// 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 session_time > $expiry_time
AND u.user_id = s.session_user_id";
if ( !($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 = $thispage_id, user_totalpages = user_totalpages+1, user_totaltime = user_totaltime+($current_time-".$userdata['session_time'].")
WHERE user_id = " . $userdata['user_id'];
if ( !$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__, $sql);
}
//
// Remove this auto-login entry (if applicable)
//
if ( isset($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;
}

//
// 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;
}

?>

Bis bald!

burn-hard

[burn-hard]

Hallo nochmal,

ich habe meine includes/sessions.php gegen die originale von 2.0.19 getauscht und siehe da, der Fehler taucht nicht mehr auf.
Allerdings Frage ich mich, welche anderen Fehler nun auftauchen werden;
denn die Alte unterscheidet sich in einigen Zeilen von der Originalen.
Ich habe jetzt auf jeden Fall die Möglichkeit, mein Forum ohne lästige Doppelkickerei und leeren Browserfenstern, einzustellen.

Ich werde zwar wohl die Unterschiede Stück für Stück ausgleichen müssen, aber das ist mir lieber, als ein neues Forum zu modden.

@hagily
Ich weiss ja nicht, ob Du schon mal in die sessions.txt geschaut hast, es ist mir jetzt auch nicht mehr so dringend, aber wenn Du den Fehler trotzdem finden würdest, wäre ich Dir sehr dankbar.

Vielen Dank für Eure Hilfe, auch wenn sie diesmal erfolglos war!

Liebe Grüße

burn-hard