<?php
/**
* MyBB 1.6
* Copyright 2010 MyBB Group, All Rights Reserved
*
* Website: http://mybb.com
* License: http://mybb.com/about/license
*
* $Id: class_datacache.php 5828 2012-05-08 16:06:16Z Tomm $
*/
class datacache
{
/**
* Cache contents.
*
* @var array
*/
public $cache = array();
/**
* The current cache handler we're using
*
* @var object
*/
public $handler = null;
/**
* Whether or not to exit the script if we cannot load the specified extension
*
* @var boolean
*/
var $silent = false;
/**
* Build cache data.
*
*/
function cache()
{
global $db, $mybb;
switch($mybb->config['cache_store'])
{
// Disk cache
case "files":
require_once MYBB_ROOT."/inc/cachehandlers/disk.php";
$this->handler = new diskCacheHandler($this->silent);
break;
// Memcache cache
case "memcache":
require_once MYBB_ROOT."/inc/cachehandlers/memcache.php";
$this->handler = new memcacheCacheHandler($this->silent);
break;
// eAccelerator cache
case "eaccelerator":
require_once MYBB_ROOT."/inc/cachehandlers/eaccelerator.php";
$this->handler = new eacceleratorCacheHandler($this->silent);
break;
// Xcache cache
case "xcache":
require_once MYBB_ROOT."/inc/cachehandlers/xcache.php";
$this->handler = new xcacheCacheHandler($this->silent);
break;
}
if(is_object($this->handler))
{
if(method_exists($this->handler, "connect"))
{
if(!$this->handler->connect())
{
$this->handler = null;
}
}
}
else
{
// Database cache
$query = $db->simple_select("datacache", "title,cache");
while($data = $db->fetch_array($query))
{
$this->cache[$data['title']] = unserialize($data['cache']);
}
}
}
/**
* Read cache from files or db.
*
* @param string The cache component to read.
* @param boolean If true, cannot be overwritten during script execution.
* @return unknown
*/
function read($name, $hard=false)
{
global $db, $mybb;
// Already have this cache and we're not doing a hard refresh? Return cached copy
if(isset($this->cache[$name]) && $hard == false)
{
return $this->cache[$name];
}
// If we're not hard refreshing, and this cache doesn't exist, return false
// It would have been loaded pre-global if it did exist anyway...
else if($hard == false && !is_object($this->handler))
{
return false;
}
if(is_object($this->handler))
{
$data = $this->handler->fetch($name);
// No data returned - cache gone bad?
if($data === false)
{
// Fetch from database
$query = $db->simple_select("datacache", "title,cache", "title='".$db->escape_string($name)."'");
$cache_data = $db->fetch_array($query);
$data = @unserialize($cache_data['cache']);
// Update cache for handler
$this->handler->put($name, $data);
}
}
// Else, using internal database cache
else
{
$query = $db->simple_select("datacache", "title,cache", "title='$name'");
$cache_data = $db->fetch_array($query);
if(!$cache_data['title'])
{
$data = false;
}
else
{
$data = @unserialize($cache_data['cache']);
}
}
// Cache locally
$this->cache[$name] = $data;
if($data !== false)
{
return $data;
}
else
{
return false;
}
}
/**
* Update cache contents.
*
* @param string The cache content identifier.
* @param string The cache content.
*/
function update($name, $contents)
{
global $db, $mybb;
$this->cache[$name] = $contents;
// We ALWAYS keep a running copy in the db just incase we need it
$dbcontents = $db->escape_string(serialize($contents));
$replace_array = array(
"title" => $db->escape_string($name),
"cache" => $dbcontents
);
$db->replace_query("datacache", $replace_array, "", false);
// Do we have a cache handler we're using?
if(is_object($this->handler))
{
$this->handler->put($name, $contents);
}
}
/**
* Select the size of the cache
*
* @param string The name of the cache
* @return integer the size of the cache
*/
function size_of($name='')
{
global $db;
if(is_object($this->handler))
{
$size = $this->handler->size_of($name);
if(!$size)
{
if($name)
{
$query = $db->simple_select("datacache", "cache", "title='{$name}'");
return strlen($db->fetch_field($query, "cache"));
}
else
{
return $db->fetch_size("datacache");
}
}
else
{
return $size;
}
}
// Using MySQL as cache
else
{
if($name)
{
$query = $db->simple_select("datacache", "cache", "title='{$name}'");
return strlen($db->fetch_field($query, "cache"));
}
else
{
return $db->fetch_size("datacache");
}
}
}
/**
* Update the MyBB version in the cache.
*
*/
function update_version()
{
global $mybb;
$version = array(
"version" => $mybb->version,
"version_code" => $mybb->version_code
);
$this->update("version", $version);
}
/**
* Update the attachment type cache.
*
*/
function update_attachtypes()
{
global $db;
$types = array();
$query = $db->simple_select("attachtypes", "*");
while($type = $db->fetch_array($query))
{
$type['extension'] = my_strtolower($type['extension']);
$types[$type['extension']] = $type;
}
$this->update("attachtypes", $types);
}
/**
* Update the smilies cache.
*
*/
function update_smilies()
{
global $db;
$smilies = array();
$query = $db->simple_select("smilies", "*", "", array('order_by' => 'disporder', 'order_dir' => 'ASC'));
while($smilie = $db->fetch_array($query))
{
$smilies[$smilie['sid']] = $smilie;
}
$this->update("smilies", $smilies);
}
/**
* Update the posticon cache.
*
*/
function update_posticons()
{
global $db;
$icons = array();
$query = $db->simple_select("icons", "iid, name, path");
while($icon = $db->fetch_array($query))
{
$icons[$icon['iid']] = $icon;
}
$this->update("posticons", $icons);
}
/**
* Update the badwords cache.
*
*/
function update_badwords()
{
global $db;
$badwords = array();
$query = $db->simple_select("badwords", "*");
while($badword = $db->fetch_array($query))
{
$badwords[$badword['bid']] = $badword;
}
$this->update("badwords", $badwords);
}
/**
* Update the usergroups cache.
*
*/
function update_usergroups()
{
global $db;
$query = $db->simple_select("usergroups");
while($g = $db->fetch_array($query))
{
$gs[$g['gid']] = $g;
}
$this->update("usergroups", $gs);
}
/**
* Update the forum permissions cache.
*
* @return false When failed, returns false.
*/
function update_forumpermissions()
{
global $forum_cache, $db;
$this->built_forum_permissions = array(0);
// Get our forum list
cache_forums(true);
if(!is_array($forum_cache))
{
return false;
}
reset($forum_cache);
$fcache = array();
// Resort in to the structure we require
foreach($forum_cache as $fid => $forum)
{
$this->forum_permissions_forum_cache[$forum['pid']][$forum['disporder']][$forum['fid']] = $forum;
}
// Sort children
foreach($fcache as $pid => $value)
{
ksort($fcache[$pid]);
}
ksort($fcache);
// Fetch forum permissions from the database
$query = $db->simple_select("forumpermissions");
while($forum_permission = $db->fetch_array($query))
{
$this->forum_permissions[$forum_permission['fid']][$forum_permission['gid']] = $forum_permission;
}
$this->build_forum_permissions();
$this->update("forumpermissions", $this->built_forum_permissions);
}
/**
* Build the forum permissions array
*
* @access private
* @param array An optional permissions array.
* @param int An optional permission id.
*/
private function build_forum_permissions($permissions=array(), $pid=0)
{
$usergroups = array_keys($this->read("usergroups", true));
if($this->forum_permissions_forum_cache[$pid])
{
foreach($this->forum_permissions_forum_cache[$pid] as $main)
{
foreach($main as $forum)
{
$perms = $permissions;
foreach($usergroups as $gid)
{
if($this->forum_permissions[$forum['fid']][$gid])
{
$perms[$gid] = $this->forum_permissions[$forum['fid']][$gid];
}
if($perms[$gid])
{
$perms[$gid]['fid'] = $forum['fid'];
$this->built_forum_permissions[$forum['fid']][$gid] = $perms[$gid];
}
}
$this->build_forum_permissions($perms, $forum['fid']);
}
}
}
}
/**
* Update the stats cache (kept for the sake of being able to rebuild this cache via the cache interface)
*
*/
function update_stats()
{
global $db;
require_once MYBB_ROOT."inc/functions_rebuild.php";
rebuild_stats();
}
/**
* Update the moderators cache.
*
*/
function update_moderators()
{
global $forum_cache, $db;
$this->built_moderators = array(0);
// Get our forum list
cache_forums(true);
if(!is_array($forum_cache))
{
return false;
}
reset($forum_cache);
$fcache = array();
// Resort in to the structure we require
foreach($forum_cache as $fid => $forum)
{
$this->moderators_forum_cache[$forum['pid']][$forum['disporder']][$forum['fid']] = $forum;
}
// Sort children
foreach($fcache as $pid => $value)
{
ksort($fcache[$pid]);
}
ksort($fcache);
// Fetch moderators from the database
$query = $db->query("
SELECT m.*, u.username, u.usergroup, u.displaygroup
FROM ".TABLE_PREFIX."moderators m
LEFT JOIN ".TABLE_PREFIX."users u ON (m.id=u.uid)
WHERE m.isgroup = '0'
ORDER BY u.username
");
while($moderator = $db->fetch_array($query))
{
$this->moderators[$moderator['fid']]['users'][$moderator['id']] = $moderator;
}
if(!function_exists("sort_moderators_by_usernames"))
{
function sort_moderators_by_usernames($a, $b)
{
return strcasecmp($a['username'], $b['username']);
}
}
//Fetch moderating usergroups from the database
$query = $db->query("
SELECT m.*, u.title
FROM ".TABLE_PREFIX."moderators m
LEFT JOIN ".TABLE_PREFIX."usergroups u ON (m.id=u.gid)
WHERE m.isgroup = '1'
ORDER BY u.title
");
while($moderator = $db->fetch_array($query))
{
$this->moderators[$moderator['fid']]['usergroups'][$moderator['id']] = $moderator;
}
if(is_array($this->moderators))
{
foreach(array_keys($this->moderators) as $fid)
{
uasort($this->moderators[$fid], 'sort_moderators_by_usernames');
}
}
$this->build_moderators();
$this->update("moderators", $this->built_moderators);
}
/**
* Build the moderators array
*
* @access private
* @param array An optional moderators array (moderators of the parent forum for example).
* @param int An optional parent ID.
*/
private function build_moderators($moderators=array(), $pid=0)
{
if($this->moderators_forum_cache[$pid])
{
foreach($this->moderators_forum_cache[$pid] as $main)
{
foreach($main as $forum)
{
$forum_mods = '';
if(count($moderators))
{
$forum_mods = $moderators;
}
// Append - local settings override that of a parent - array_merge works here
if($this->moderators[$forum['fid']])
{
if(is_array($forum_mods) && count($forum_mods))
{
$forum_mods = array_merge($forum_mods, $this->moderators[$forum['fid']]);
}
else
{
$forum_mods = $this->moderators[$forum['fid']];
}
}
$this->built_moderators[$forum['fid']] = $forum_mods;
$this->build_moderators($forum_mods, $forum['fid']);
}
}
}
}
/**
* Update the forums cache.
*
*/
function update_forums()
{
global $db;
$forums = array();
// Things we don't want to cache
$exclude = array("unapprovedthreads","unapprovedposts", "threads", "posts", "lastpost", "lastposter", "lastposttid");
$query = $db->simple_select("forums", "*", "", array('order_by' => 'pid,disporder'));
while($forum = $db->fetch_array($query))
{
foreach($forum as $key => $val)
{
if(in_array($key, $exclude))
{
unset($forum[$key]);
}
}
$forums[$forum['fid']] = $forum;
}
$this->update("forums", $forums);
}
/**
* Update usertitles cache.
*
*/
function update_usertitles()
{
global $db;
$usertitles = array();
$query = $db->simple_select("usertitles", "utid, posts, title, stars, starimage", "", array('order_by' => 'posts', 'order_dir' => 'DESC'));
while($usertitle = $db->fetch_array($query))
{
$usertitles[] = $usertitle;
}
$this->update("usertitles", $usertitles);
}
/**
* Update reported posts cache.
*
*/
function update_reportedposts()
{
global $db;
$reports = array();
$query = $db->simple_select("reportedposts", "COUNT(rid) AS unreadcount", "reportstatus='0'");
$num = $db->fetch_array($query);
$query = $db->simple_select("reportedposts", "COUNT(rid) AS reportcount");
$total = $db->fetch_array($query);
$query = $db->simple_select("reportedposts", "dateline", "reportstatus='0'", array('order_by' => 'dateline', 'order_dir' => 'DESC'));
$latest = $db->fetch_array($query);
$reports = array(
"unread" => $num['unreadcount'],
"total" => $total['reportcount'],
"lastdateline" => $latest['dateline']
);
$this->update("reportedposts", $reports);
}
/**
* Update mycode cache.
*
*/
function update_mycode()
{
global $db;
$mycodes = array();
$query = $db->simple_select("mycode", "regex, replacement", "active=1", array('order_by' => 'parseorder'));
while($mycode = $db->fetch_array($query))
{
$mycodes[] = $mycode;
}
$this->update("mycode", $mycodes);
}
/**
* Update the mailqueue cache
*
*/
function update_mailqueue($last_run=0, $lock_time=0)
{
global $db;
$query = $db->simple_select("mailqueue", "COUNT(*) AS queue_size");
$queue_size = $db->fetch_field($query, "queue_size");
$mailqueue = $this->read("mailqueue");
if(!is_array($mailqueue))
{
$mailqueue = array();
}
$mailqueue['queue_size'] = $queue_size;
if($last_run > 0)
{
$mailqueue['last_run'] = $last_run;
}
$mailqueue['locked'] = $lock_time;
$this->update("mailqueue", $mailqueue);
}
/**
* Update update_check cache (dummy function used by upgrade/install scripts)
*/
function update_update_check()
{
$update_cache = array(
"dateline" => TIME_NOW
);
$this->update("update_check", $update_cache);
}
/**
* Updates the tasks cache saving the next run time
*/
function update_tasks()
{
global $db;
$query = $db->simple_select("tasks", "nextrun", "enabled=1", array("order_by" => "nextrun", "order_dir" => "asc", "limit" => 1));
$next_task = $db->fetch_array($query);
$task_cache = $this->read("tasks");
if(!is_array($task_cache))
{
$task_cache = array();
}
$task_cache['nextrun'] = $next_task['nextrun'];
if(!$task_cache['nextrun'])
{
$task_cache['nextrun'] = TIME_NOW+3600;
}
$this->update("tasks", $task_cache);
}
/**
* Updates the banned IPs cache
*/
function update_bannedips()
{
global $db;
$banned_ips = array();
$query = $db->simple_select("banfilters", "fid,filter", "type=1");
while($banned_ip = $db->fetch_array($query))
{
$banned_ips[$banned_ip['fid']] = $banned_ip;
}
$this->update("bannedips", $banned_ips);
}
/**
* Updates the banned emails cache
*/
function update_bannedemails()
{
global $db;
$banned_emails = array();
$query = $db->simple_select("banfilters", "fid, filter", "type = '3'");
while($banned_email = $db->fetch_array($query))
{
$banned_emails[$banned_email['fid']] = $banned_email;
}
$this->update("bannedemails", $banned_emails);
}
/**
* Updates the search engine spiders cache
*/
function update_spiders()
{
global $db;
$spiders = array();
$query = $db->simple_select("spiders", "sid, name, useragent, usergroup", "", array("order_by" => "LENGTH(useragent)", "order_dir" => "DESC"));
while($spider = $db->fetch_array($query))
{
$spiders[$spider['sid']] = $spider;
}
$this->update("spiders", $spiders);
}
function update_most_replied_threads()
{
global $db, $mybb;
$threads = array();
$query = $db->simple_select("threads", "tid, subject, replies, fid", "visible='1'", array('order_by' => 'replies', 'order_dir' => 'DESC', 'limit_start' => 0, 'limit' => $mybb->settings['statslimit']));
while($thread = $db->fetch_array($query))
{
$threads[] = $thread;
}
$this->update("most_replied_threads", $threads);
}
function update_most_viewed_threads()
{
global $db, $mybb;
$threads = array();
$query = $db->simple_select("threads", "tid, subject, views, fid", "visible='1'", array('order_by' => 'views', 'order_dir' => 'DESC', 'limit_start' => 0, 'limit' => $mybb->settings['statslimit']));
while($thread = $db->fetch_array($query))
{
$threads[] = $thread;
}
$this->update("most_viewed_threads", $threads);
}
function update_banned()
{
global $db;
$bans = array();
$query = $db->simple_select("banned");
while($ban = $db->fetch_array($query))
{
$bans[$ban['uid']] = $ban;
}
$this->update("banned", $bans);
}
function update_birthdays()
{
global $db;
$birthdays = array();
// Get today, yesturday, and tomorrow's time (for different timezones)
$bdaytime = TIME_NOW;
$bdaydate = my_date("j-n", $bdaytime, '', 0);
$bdaydatetomorrow = my_date("j-n", ($bdaytime+86400), '', 0);
$bdaydateyesterday = my_date("j-n", ($bdaytime-86400), '', 0);
$query = $db->simple_select("users", "uid, username, usergroup, displaygroup, birthday, birthdayprivacy", "birthday LIKE '$bdaydate-%' OR birthday LIKE '$bdaydateyesterday-%' OR birthday LIKE '$bdaydatetomorrow-%'");
while($bday = $db->fetch_array($query))
{
// Pop off the year from the birthday because we don't need it.
$bday['bday'] = explode('-', $bday['birthday']);
array_pop($bday['bday']);
$bday['bday'] = implode('-', $bday['bday']);
if($bday['birthdayprivacy'] != 'all')
{
++$birthdays[$bday['bday']]['hiddencount'];
continue;
}
// We don't need any excess caleries in the cache
unset($bday['birthdayprivacy']);
$birthdays[$bday['bday']]['users'][] = $bday;
}
$this->update("birthdays", $birthdays);
}
function update_groupleaders()
{
global $db;
$groupleaders = array();
$query = $db->simple_select("groupleaders");
while($groupleader = $db->fetch_array($query))
{
$groupleaders[$groupleader['uid']][] = $groupleader;
}
$this->update("groupleaders", $groupleaders);
}
function update_threadprefixes()
{
global $db;
$prefixes = array();
$query = $db->simple_select("threadprefixes", "*", "", array("order_by" => "pid"));
while($prefix = $db->fetch_array($query))
{
$prefixes[$prefix['pid']] = $prefix;
}
$this->update("threadprefixes", $prefixes);
}
function update_forumsdisplay()
{
global $db;
$fd_statistics = array();
$time = TIME_NOW; // Look for announcements that don't end, or that are ending some time in the future
$query = $db->simple_select("announcements", "fid", "enddate = '0' OR enddate > '{$time}'", array("order_by" => "aid"));
if($db->num_rows($query))
{
while($forum = $db->fetch_array($query))
{
if(!isset($fd_statistics[$forum['fid']]['announcements']))
{
$fd_statistics[$forum['fid']]['announcements'] = 1;
}
}
}
// Do we have any mod tools to use in our forums?
$query = $db->simple_select("modtools", "forums, tid", "type = 't'", array("order_by" => "tid"));
if($db->num_rows($query))
{
unset($forum);
while($tool = $db->fetch_array($query))
{
$forums = explode(",", $tool['forums']);
foreach($forums as $forum)
{
if(!$forum)
{
$forum = -1;
}
if(!isset($fd_statistics[$forum]['modtools']))
{
$fd_statistics[$forum]['modtools'] = 1;
}
}
}
}
$this->update("forumsdisplay", $fd_statistics);
}
/* Other, extra functions for reloading caches if we just changed to another cache extension (i.e. from db -> xcache) */
function reload_mostonline()
{
global $db;
$query = $db->simple_select("datacache", "title,cache", "title='mostonline'");
$this->update("mostonline", @unserialize($db->fetch_field($query, "cache")));
}
function reload_plugins()
{
global $db;
$query = $db->simple_select("datacache", "title,cache", "title='plugins'");
$this->update("plugins", @unserialize($db->fetch_field($query, "cache")));
}
function reload_last_backup()
{
global $db;
$query = $db->simple_select("datacache", "title,cache", "title='last_backup'");
$this->update("last_backup", @unserialize($db->fetch_field($query, "cache")));
}
function reload_internal_settings()
{
global $db;
$query = $db->simple_select("datacache", "title,cache", "title='internal_settings'");
$this->update("internal_settings", @unserialize($db->fetch_field($query, "cache")));
}
function reload_version_history()
{
global $db;
$query = $db->simple_select("datacache", "title,cache", "title='version_history'");
$this->update("version_history", @unserialize($db->fetch_field($query, "cache")));
}
}
?>