+<?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);

+ }

+

+ 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']);

+ }

+

+ 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'] : '';

+ $user_id = ( isset($sessiondata['userid']) ) ? $sessiondata['userid'] : ANONYMOUS;

+

+ $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 . "

+ WHERE ban_ip IN (

+ '" . $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;

+}

+

+?> \ No newline at end of file