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php-phpbb/phpBB/includes/session.php

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Renamed again git-svn-id: file:///svn/phpbb/trunk@2661 89ea8834-ac86-4346-8a33-228a782c2dd0
2002-07-14 14:32:45 +00:00
<?php
/***************************************************************************
* session.php
* -------------------
* begin : Saturday, Feb 13, 2001
* copyright : (C) 2002 The phpBB Group
* email : support@phpbb.com
*
* $Id$
*
***************************************************************************/
/***************************************************************************
*
* 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.
*
***************************************************************************/
class session {
var $userdata;
var $load;
function start($update = true)
{
global $SID, $db, $board_config, $user_ip;
global $HTTP_SERVER_VARS, $HTTP_ENV_VARS, $HTTP_COOKIE_VARS, $HTTP_GET_VARS;
$current_time = time();
$session_browser = ( !empty($HTTP_SERVER_VARS['HTTP_USER_AGENT']) ) ? $HTTP_SERVER_VARS['HTTP_USER_AGENT'] : $HTTP_ENV_VARS['HTTP_USER_AGENT'];
$this_page = ( !empty($HTTP_SERVER_VARS['PHP_SELF']) ) ? $HTTP_SERVER_VARS['PHP_SELF'] : $HTTP_ENV_VARS['PHP_SELF'];
$this_page .= '&' . ( ( !empty($HTTP_SERVER_VARS['QUERY_STRING']) ) ? $HTTP_SERVER_VARS['QUERY_STRING'] : $HTTP_ENV_VARS['QUERY_STRING'] );
if ( isset($HTTP_COOKIE_VARS[$board_config['cookie_name'] . '_sid']) || isset($HTTP_COOKIE_VARS[$board_config['cookie_name'] . '_data']) )
{
$sessiondata = ( isset($HTTP_COOKIE_VARS[$board_config['cookie_name'] . '_data']) ) ? unserialize(stripslashes($HTTP_COOKIE_VARS[$board_config['cookie_name'] . '_data'])) : '';
$session_id = ( isset($HTTP_COOKIE_VARS[$board_config['cookie_name'] . '_sid']) ) ? $HTTP_COOKIE_VARS[$board_config['cookie_name'] . '_sid'] : '';
$sessionmethod = SESSION_METHOD_COOKIE;
}
else
{
$sessiondata = '';
$session_id = ( isset($HTTP_GET_VARS['sid']) ) ? $HTTP_GET_VARS['sid'] : '';
$sessionmethod = SESSION_METHOD_GET;
}
//
// Load limit check (if applicable)
//
if ( !empty($board_config['limit_load']) && file_exists('/proc/loadavg') )
{
if ( $load = @file('/proc/loadavg') )
{
list($this->load) = explode(' ', $load[0]);
if ( $this->load > $board_config['limit_load'] )
{
message_die(MESSAGE, 'Board_unavailable');
}
}
}
if ( !empty($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";
$result = $db->sql_query($sql);
$this->userdata = $db->sql_fetchrow($result);
//
// Did the session exist in the DB?
//
if ( isset($this->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 = explode('.', $this->userdata['session_ip']);
$ip_check_u = explode('.', $user_ip);
if ( $ip_check_s[0].'.'.$ip_check_s[1].'.'.$ip_check_s[2] == $ip_check_u[0].'.'.$ip_check_u[1].'.'.$ip_check_u[2] )
{
$SID = '?sid=' . ( ( $sessionmethod == SESSION_METHOD_GET ) ? $session_id : '' );
//
// Only update session DB a minute or so after last update or if page changes
//
if ( ( $current_time - $this->userdata['session_time'] > 60 || $this->userdata['session_page'] != $this_page ) && $update )
{
$sql = "UPDATE " . SESSIONS_TABLE . "
SET session_time = $current_time, session_page = '$this_page'
WHERE session_id = '" . $this->userdata['session_id'] . "'";
$db->sql_query($sql);
//
// Garbage collection ... remove old sessions updating user information
// if necessary
//
if ( $current_time - $board_config['session_gc'] > $board_config['session_last_gc'] )
{
$this->gc($current_time);
}
}
Various changes + Ashe's security fix git-svn-id: file:///svn/phpbb/trunk@2741 89ea8834-ac86-4346-8a33-228a782c2dd0
2002-07-25 15:18:00 +00:00
setcookie($board_config['cookie_name'] . '_data', serialize($sessiondata), $current_time + 31536000, $board_config['cookie_path'], $board_config['cookie_domain'], $board_config['cookie_secure']);
setcookie($board_config['cookie_name'] . '_sid', $session_id, 0, $board_config['cookie_path'], $board_config['cookie_domain'], $board_config['cookie_secure']);
Renamed again git-svn-id: file:///svn/phpbb/trunk@2661 89ea8834-ac86-4346-8a33-228a782c2dd0
2002-07-14 14:32:45 +00:00
return $this->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.
//
$autologin = ( isset($sessiondata['autologinid']) ) ? $sessiondata['autologinid'] : '';
Various changes + Ashe's security fix git-svn-id: file:///svn/phpbb/trunk@2741 89ea8834-ac86-4346-8a33-228a782c2dd0
2002-07-25 15:18:00 +00:00
$user_id = ( isset($sessiondata['userid']) ) ? intval($sessiondata['userid']) : ANONYMOUS;
Renamed again git-svn-id: file:///svn/phpbb/trunk@2661 89ea8834-ac86-4346-8a33-228a782c2dd0
2002-07-14 14:32:45 +00:00
$this->userdata = $this->create($session_id, $user_id, $autologin, $this_page, $session_browser);
return $this->userdata;
}
function create(&$session_id, &$user_id, &$autologin, &$this_page, &$session_browser)
{
global $SID, $db, $board_config, $user_ip;
$sessiondata = array();
$current_time = time();
//
// Limit connections (for MySQL) or 5 minute sessions (for other DB's)
//
switch ( SQL_LAYER )
{
case 'mysql':
case 'mysql4':
$sql = "SHOW PROCESSLIST";
break;
default:
$sql = "SELECT COUNT(*) AS sessions
FROM " . SESSIONS_TABLE . "
WHERE session_time >= " . ( $current_time - 3600 );
}
$result = $db->sql_query($sql);
switch ( SQL_LAYER )
{
case 'mysql':
case 'mysql4':
$current_sessions = 0;
while ( $db->sql_fetchrow($result) ) $current_sessions++;
break;
default:
$row = $db->sql_fetchrow[$result];
$current_sessions = ( isset($row['sessions']) ) ? $row['sessions'] : 0;
}
if ( intval($board_config['active_sessions']) && $current_sessions > intval($board_config['active_sessions']) )
{
message_die(GENERAL_MESSAGE, 'Board_unavailable', 'Information');
}
$sql = "SELECT *
FROM " . USERS_TABLE . "
WHERE user_id = $user_id";
$result = $db->sql_query($sql);
$this->userdata = $db->sql_fetchrow($result);
//
// Check autologin request, is it valid?
//
if ( $this->userdata['user_password'] != $autologin || !$this->userdata['user_active'] || $user_id == ANONYMOUS )
{
$autologin = '';
$this->userdata['user_id'] = $user_id = ANONYMOUS;
}
$user_ip_parts = explode('.', $user_ip);
$sql = "SELECT ban_ip, ban_userid, ban_email
FROM " . BANLIST_TABLE . "
Various updates, banning, etc. git-svn-id: file:///svn/phpbb/trunk@2745 89ea8834-ac86-4346-8a33-228a782c2dd0
2002-07-26 16:31:50 +00:00
WHERE ( ban_end >= $current_time
Idiot, idiot, idiot ... stand in the corner git-svn-id: file:///svn/phpbb/trunk@2751 89ea8834-ac86-4346-8a33-228a782c2dd0
2002-07-26 18:10:14 +00:00
OR ban_end = 0 )
Timed ban check git-svn-id: file:///svn/phpbb/trunk@2743 89ea8834-ac86-4346-8a33-228a782c2dd0
2002-07-26 12:14:41 +00:00
AND ban_ip IN (
Renamed again git-svn-id: file:///svn/phpbb/trunk@2661 89ea8834-ac86-4346-8a33-228a782c2dd0
2002-07-14 14:32:45 +00:00
'" . $user_ip_parts[0] . ".',
'" . $user_ip_parts[0] . "." . $user_ip_parts[1] . ".',
'" . $user_ip_parts[0] . "." . $user_ip_parts[1] . "." . $user_ip_parts[2] . ".',
'" . $user_ip_parts[0] . "." . $user_ip_parts[1] . "." . $user_ip_parts[2] . "." . $user_ip_parts[3] . "')
OR ban_userid = " . $this->userdata['user_id'];
if ( $user_id != ANONYMOUS )
{
$sql .= " OR ban_email LIKE '" . str_replace('\\\'', '\\\'\\\'', $this->userdata['user_email']) . "'
OR ban_email LIKE '" . substr(str_replace('\\\'', '\\\'\\\'', $this->userdata['user_email']), strpos(str_replace('\\\'', '\\\'\\\'', $this->userdata['user_email']), '@')) . "'";
}
$result = $db->sql_query($sql);
if ( $ban_info = $db->sql_fetchrow($result) )
{
if ( $ban_info['ban_ip'] || $ban_info['ban_userid'] || $ban_info['ban_email'] )
{
message_die(MESSAGE, 'You_been_banned');
}
}
//
// Create or update the session
//
$db->sql_return_on_error(true);
$sql = "UPDATE " . SESSIONS_TABLE . "
SET session_user_id = $user_id, session_start = $current_time, session_time = $current_time, session_browser = '$session_browser', session_page = '$this_page'
WHERE session_id = '$session_id'";
if ( !$db->sql_query($sql) || !$db->sql_affectedrows() )
{
$db->sql_return_on_error(false);
$session_id = md5(uniqid($user_ip));
$sql = "INSERT INTO " . SESSIONS_TABLE . "
(session_id, session_user_id, session_start, session_time, session_ip, session_browser, session_page)
VALUES ('$session_id', $user_id, $current_time, $current_time, '$user_ip', '$session_browser', '$this_page')";
$db->sql_query($sql);
}
$db->sql_return_on_error(false);
$SID = '?sid=' . $session_id;
$sessiondata['autologinid'] = ( $autologin && $user_id != ANONYMOUS ) ? $autologin : '';
$sessiondata['userid'] = $user_id;
setcookie($board_config['cookie_name'] . '_data', serialize($sessiondata), $current_time + 31536000, $board_config['cookie_path'], $board_config['cookie_domain'], $board_config['cookie_secure']);
setcookie($board_config['cookie_name'] . '_sid', $session_id, 0, $board_config['cookie_path'], $board_config['cookie_domain'], $board_config['cookie_secure']);
$this->userdata['session_id'] = $session_id;
return $this->userdata;
}
function destroy(&$userdata)
{
global $SID, $db, $board_config, $user_ip;
global $HTTP_SERVER_VARS, $HTTP_ENV_VARS, $HTTP_COOKIE_VARS, $HTTP_GET_VARS;
if ( isset($HTTP_COOKIE_VARS[$board_config['cookie_name'] . '_sid']) )
{
$session_id = ( isset($HTTP_COOKIE_VARS[$board_config['cookie_name'] . '_sid']) ) ? $HTTP_COOKIE_VARS[$board_config['cookie_name'] . '_sid'] : '';
}
else
{
$session_id = ( isset($HTTP_GET_VARS['sid']) ) ? $HTTP_GET_VARS['sid'] : '';
}
$sessiondata = array();
$current_time = time();
//
// Delete existing session, update last visit info first!
//
$sql = "UPDATE " . USERS_TABLE . "
SET user_lastvisit = " . $userdata['session_time'] . ", user_session_page = '" . $userdata['session_page'] . "'
WHERE user_id = " . $userdata['user_id'];
$db->sql_query($sql);
$sql = "DELETE FROM " . SESSIONS_TABLE . "
WHERE session_id = '" . $userdata['session_id'] . "'
AND session_user_id = " . $userdata['user_id'];
$db->sql_query($sql);
$SID = '?sid=';
setcookie($board_config['cookie_name'] . '_data', '', $current_time - 31536000, $board_config['cookie_path'], $board_config['cookie_domain'], $board_config['cookie_secure']);
setcookie($board_config['cookie_name'] . '_sid', '', $current_time - 31536000, $board_config['cookie_path'], $board_config['cookie_domain'], $board_config['cookie_secure']);
return true;
}
function gc(&$current_time)
{
global $db, $board_config, $user_ip;
$sql = "SELECT *
FROM " . SESSIONS_TABLE . "
WHERE session_time < " . ( $current_time - $board_config['session_length'] );
$result = $db->sql_query($sql);
$del_session_id = '';
while ( $row = $db->sql_fetchrow($result) )
{
if ( $row['user_id'] != ANONYMOUS )
{
$sql = "UPDATE " . USERS_TABLE . "
SET user_lastvisit = " . $row['session_time'] . ", user_session_page = '" . $row['session_page'] . "'
WHERE user_id = " . $row['session_user_id'];
$db->sql_query($sql);
}
$del_session_id .= ( ( $del_session_id != '' ) ? ', ' : '' ) . '\'' . $row['session_id'] . '\'';
}
if ( $del_session_id != '' )
{
//
// Delete expired sessions
//
$sql = "DELETE FROM " . SESSIONS_TABLE . "
WHERE session_id IN ($del_session_id)";
$db->sql_query($sql);
}
$sql = "UPDATE " . CONFIG_TABLE . "
SET config_value = '$current_time'
WHERE config_name = 'session_last_gc'";
$db->sql_query($sql);
return;
}
function get_cookies()
{
}
function set_cookies()
{
}
function configure($userdata, $lang_set = false)
{
global $db, $template, $lang, $board_config, $theme, $images;
global $phpEx, $phpbb_root_path;
if ( $userdata['user_id'] != ANONYMOUS )
{
$board_config['default_lang'] = $userdata['user_lang'];
$board_config['default_dateformat'] = $userdata['user_dateformat'];
$board_config['board_timezone'] = $userdata['user_timezone'];
}
if ( !file_exists($phpbb_root_path . 'language/lang_' . $board_config['default_lang'] . '/lang_main.' . $phpEx) )
{
$board_config['default_lang'] = 'english';
}
include($phpbb_root_path . 'language/lang_' . $board_config['default_lang'] . '/lang_main.' . $phpEx);
if ( defined('IN_ADMIN') )
{
if ( !file_exists($phpbb_root_path . 'language/lang_' . $board_config['default_lang'] . '/lang_admin.'.$phpEx) )
{
$board_config['default_lang'] = 'english';
}
include($phpbb_root_path . 'language/lang_' . $board_config['default_lang'] . '/lang_admin.' . $phpEx);
}
//
// Set up style
//
$style = ( !$board_config['override_user_style'] && $userdata['user_id'] != ANONYMOUS ) ? $userdata['user_style'] : $board_config['default_style'];
$sql = "SELECT t.template_path, t.poll_length, t.pm_box_length, c.css_data, c.css_external, i.*
FROM " . STYLES_TABLE . " s, " . STYLES_TPL_TABLE . " t, " . STYLES_CSS_TABLE . " c, " . STYLES_IMAGE_TABLE . " i
WHERE s.style_id = $style
AND t.template_id = s.template_id
AND c.theme_id = s.style_id
AND i.imageset_id = s.imageset_id";
$result = $db->sql_query($sql);
if ( !($theme = $db->sql_fetchrow($result)) )
{
message_die(ERROR, 'Could not get style data [ id ' . $style . ' ]');
}
if ( $template = new Template($theme['template_path']) )
{
$img_lang = ( file_exists('imageset/' . $theme['imageset_path'] . '/lang_' . $board_config['default_lang']) ) ? $board_config['default_lang'] : 'english';
$i10n = array('post_new', 'post_locked', 'post_pm', 'reply_new', 'reply_pm', 'reply_locked', 'icon_quote', 'icon_edit', 'icon_search', 'icon_profile', 'icon_pm', 'icon_email', 'icon_www', 'icon_icq', 'icon_aim', 'icon_yim', 'icon_msnm', 'icon_delete', 'icon_ip', 'icon_no_email', 'icon_no_www', 'icon_no_icq', 'icon_no_aim', 'icon_no_yim', 'icon_no_msnm');
for($i = 0; $i < sizeof($i10n); $i++)
{
$theme[$i10n[$i]] = str_replace('{LANG}', 'lang_' . $img_lang, $theme[$i10n[$i]]);
}
}
return;
}
}
//
// Note this doesn't use the prefetch at present and is very
// incomplete ... purely for testing ... will be keeping my
// eye of 'other products' to ensure these things don't
// mysteriously appear elsewhere, think up your own solutions!
//
class auth {
var $acl;
var $where_sql = '';
function auth($mode, $userdata, $forum_id = false)
{
global $db;
switch( $mode )
{
case 'list':
$and_sql = "AND ( ao.auth_option LIKE 'list' OR ao.auth_type LIKE 'admin' )";
break;
case 'forum':
$and_sql = "AND ( ( au.forum_id = $forum_id ) OR ( au.forum_id <> $forum_id AND ( ao.auth_option LIKE 'list' OR ao.auth_type LIKE 'mod' OR ao.auth_type LIKE 'admin' ) ) )";
break;
case 'admin':
$and_sql = "AND ( ao.auth_type LIKE 'admin' )";
break;
case 'listmod':
$and_sql = "AND ( ao.auth_option LIKE 'list' OR ao.auth_type LIKE 'mod' OR ao.auth_type LIKE 'admin' )";
break;
case 'all':
$and_sql = '';
break;
}
$sql = "SELECT au.forum_id, au.auth_allow_deny, ao.auth_type, ao.auth_option
FROM " . ACL_PREFETCH_TABLE . " au, " . ACL_OPTIONS_TABLE . " ao
WHERE au.user_id = " . $userdata['user_id'] . "
AND ao.auth_option_id = au.auth_option_id
$and_sql";
$result = $db->sql_query($sql);
if ( $row = $db->sql_fetchrow($result) )
{
do
{
$this->acl[$row['forum_id']][$row['auth_type']][$row['auth_option']] = $row['auth_allow_deny'];
}
while ( $row = $db->sql_fetchrow($result) );
}
$db->sql_freeresult($result);
return;
}
function get_acl($forum_id = false, $auth_main = false, $auth_type = false)
{
if ( $auth_main && $auth_type )
{
return $this->acl[$forum_id][$auth_main][$auth_type];
}
else if ( !$auth_type && is_array($this->acl[$forum_id][$auth_main]) )
{
return ( array_sum($this->acl[$forum_id][$auth_main]) ) ? true : false;
}
return $this->acl[$forum_id];
}
function get_acl_admin($auth_type = false)
{
if ( $auth_type )
{
return $this->acl[0]['admin'][$auth_type];
}
else if ( !$auth_type && is_array($this->acl[0]['admin']) )
{
return ( array_sum($this->acl[0]['admin']) ) ? true : false;
}
return false;
}
function set_acl($ug_data, $forum_id, $auth_list = false, $dependencies = false)
{
global $db;
$dependencies = array_merge($dependencies, array(
'admin' => 'mod',
'mod' => 'forum')
);
}
}
//
// Centralised login? May stay, may not ... depends if needed
//
function login($username, $password, $autologin = false)
{
global $SID, $db, $board_config, $lang, $user_ip, $userdata;
global $HTTP_SERVER_VARS, $HTTP_ENV_VARS;
$this_page = ( !empty($HTTP_SERVER_VARS['PHP_SELF']) ) ? $HTTP_SERVER_VARS['PHP_SELF'] : $HTTP_ENV_VARS['PHP_SELF'];
$this_page .= '&' . ( ( !empty($HTTP_SERVER_VARS['QUERY_STRING']) ) ? $HTTP_SERVER_VARS['QUERY_STRING'] : $HTTP_ENV_VARS['QUERY_STRING'] );
$session_browser = ( !empty($HTTP_SERVER_VARS['HTTP_USER_AGENT']) ) ? $HTTP_SERVER_VARS['HTTP_USER_AGENT'] : $HTTP_ENV_VARS['HTTP_USER_AGENT'];
$sql = "SELECT user_id, username, user_password, user_email, user_active, user_level
FROM " . USERS_TABLE . "
WHERE username = '" . str_replace("\'", "''", $username) . "'";
$result = $db->sql_query($sql);
if ( $row = $db->sql_fetchrow($result) )
{
if ( $board_config['ldap_enable'] && extension_loaded('ldap') )
{
if ( !($ldap_id = @ldap_connect($board_config['ldap_hostname'])) )
{
@ldap_unbind($ldap_id);
}
}
else
{
if ( md5($password) == $row['user_password'] && $row['user_active'] )
{
$autologin = ( isset($autologin) ) ? md5($password) : '';
$userdata = $session->create($session_id, $user_id, $autologin, $this_page, $session_browser);
}
}
}
return $result;
}
?>
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