cache.func.php

Discuz! 论坛软件系统

<?php

/*
	[DISCUZ!] include/cache.func.php - Discuz! cache system
	This is NOT a freeware, use is subject to license terms

	Version: 4.0.0
	Web: http://www.comsenz.com
	Copyright: 2001-2005 Comsenz Technology Ltd.
	Last Modified: 2005-4-12 9:17
*/


define('DISCUZ_KERNEL_VERSION', '4.0.0');
define('DISCUZ_KERNEL_RELEASE', '20051216');

if(isset($_GET['kernel_version'])) {
	exit('Crossday Discuz! Board<br>Developed Comsenz Technology Ltd<br><br>Version: '.DISCUZ_KERNEL_VERSION.'<br>Release: '.DISCUZ_KERNEL_RELEASE);
} elseif(!defined('IN_DISCUZ')) {
	exit('Access Denied');
}

function arrayeval($array, $level = 0) {
	$space = '';
	for($i = 0; $i <= $level; $i++) {
		$space .= "\t";
	}
	$evaluate = "Array\n$space(\n";
	$comma = $space;
	foreach($array as $key => $val) {
		$key = is_string($key) ? '\''.addcslashes($key, '\'\\').'\'' : $key;
		$val = !is_array($val) && (!preg_match("/^\-?\d+$/", $val) || strlen($val) > 12) ? '\''.addcslashes($val, '\'\\').'\'' : $val;
		if(is_array($val)) {
			$evaluate .= "$comma$key => ".arrayeval($val, $level + 1);
		} else {
			$evaluate .= "$comma$key => $val";
		}
		$comma = ",\n$space";
	}
	$evaluate .= "\n$space)";
	return $evaluate;
}

function updatecache($cachename = '') {
	global $db, $bbname, $tablepre;

	$cachescript = array
		(
		'settings'	=> array('settings'),
		'index'		=> array('announcements', 'onlinelist', 'forumlinks'),
		'forumdisplay'	=> array('announcements_forum', 'globalstick', 'forums', 'icons', 'onlinelist'),
		'viewthread'	=> array('forums', 'usergroups', 'ranks', 'bbcodes', 'smilies', 'fields_thread'),
		'post'		=> array('bbcodes', 'smilies_display', 'smilies', 'icons'),
		'blog'		=> array('usergroups', 'ranks', 'bbcodes', 'smilies'),
		'forums'	=> array('forums'),
		'profilefields'	=> array('fields_required', 'fields_optional'),
		'censor'	=> array('censor'),
		'ipbanned'	=> array('ipbanned'),
		'bbcodes'	=> array('bbcodes', 'smilies'),
		'medals'	=> array('medals')
		);

	foreach($cachescript as $script => $cachenames) {
		if(!$cachename || ($cachename && in_array($cachename, $cachenames))) {
			writetocache($script, $cachenames);
		}
	}

	if(!$cachename || $cachename == 'styles') {
		$stylevars = array();
		$query = $db->query("SELECT * FROM {$tablepre}stylevars");
		while($var = $db->fetch_array($query)) {
			$stylevars[$var['styleid']][$var['variable']] = $var['substitute'];
		}
		$query = $db->query("SELECT s.*, t.directory AS tpldir FROM {$tablepre}styles s LEFT JOIN {$tablepre}templates t ON s.templateid=t.templateid");
		while($data = $db->fetch_array($query)) {
			$data = array_merge($data, $stylevars[$data['styleid']]);

			$data['bgcode'] = strpos($data['bgcolor'], '.') ? "background-image: url(\"$data[imgdir]/$data[bgcolor]\")" : "background-color: $data[bgcolor]";
			$data['maintablebgcode'] = strpos($data['maintablecolor'], '.') ? "background=\"$data[maintablecolor]\"" : "bgcolor=\"$data[maintablecolor]\"";
			$data['catbgcode'] = strpos($data['catcolor'], '.') ? "background-image: url(\"$data[imgdir]/$data[catcolor]\")" : "background-color: $data[catcolor]";
			$data['headerbgcode'] = strpos($data['headercolor'], '.') ? "background-image: url(\"$data[imgdir]/$data[headercolor]\")" : "background-color: $data[headercolor]";
			$data['boardlogo'] = image($data['boardimg'], $data['imgdir'], "alt=\"$bbname\"");
			$data['bold'] = $data['nobold'] ? 'normal' : 'bold';

			writetocache($data['styleid'], '', getcachevars($data, 'CONST'), 'style_');
		}
	}

	if(!$cachename || $cachename == 'usergroups') {
		$query = $db->query("SELECT * FROM {$tablepre}usergroups u
					LEFT JOIN {$tablepre}admingroups a ON u.groupid=a.admingid");
		while($data = $db->fetch_array($query)) {
			$ratearray = array();
			if($data['raterange']) {
				foreach(explode("\n", $data['raterange']) as $rating) {
					$rating = explode("\t", $rating);
					$ratearray[$rating[0]] = array('min' => $rating[1], 'max' => $rating[2], 'mrpd' => $rating[3]);
				}
			}
			$data['raterange'] = $ratearray;
			$data['grouptitle'] = $data['color'] ? '<font color="'.$data['color'].'">'.$data['grouptitle'].'</font>' : $data['grouptitle'];
			$data['grouptype'] = $data['type'];
			$data['grouppublic'] = $data['system'] != 'private';
			$data['groupcreditshigher'] = $data['creditshigher'];
			$data['groupcreditslower'] = $data['creditslower'];
			unset($data['type'], $data['system'], $data['creditshigher'], $data['creditslower'], $data['color'], $data['groupavatar'], $data['admingid']);
			foreach($data as $key => $val) {
				if(!isset($data[$key])) {
					unset($data[$key]);
				}
			}
			writetocache($data['groupid'], '', getcachevars($data), 'usergroup_');
		}
	}

	if(!$cachename || $cachename == 'admingroups') {
		$query = $db->query("SELECT * FROM {$tablepre}admingroups");
		while($data = $db->fetch_array($query)) {
			writetocache($data['admingid'], '', getcachevars($data), 'admingroup_');
		}
	}

	if(!$cachename || $cachename == 'plugins') {
		$query = $db->query("SELECT pluginid, available, adminid, name, identifier, datatables, directory, copyright, modules FROM {$tablepre}plugins");
		while($plugin = $db->fetch_array($query)) {
			$data = array_merge($plugin, array('modules' => array()), array('vars' => array()));
			$plugin['modules'] = unserialize($plugin['modules']);
			if(is_array($plugin['modules'])) {
				foreach($plugin['modules'] as $module) {
					$data['modules'][$module['name']] = $module;
				}
			}
			$queryvars = $db->query("SELECT variable, value FROM {$tablepre}pluginvars WHERE pluginid='$plugin[pluginid]'");
			while($var = $db->fetch_array($queryvars)) {
				$data['vars'][$var['variable']] = $var['value'];
			}
			writetocache($plugin['identifier'], '', "\$_DPLUGIN['$plugin[identifier]'] = ".arrayeval($data), 'plugin_');
		}
	}
}

function writetocache($script, $cachenames, $cachedata = '', $prefix = 'cache_') {
	if(is_array($cachenames) && !$cachedata) {
		foreach($cachenames as $name) {
			$cachedata .= getcachearray($name);
		}
	}

	$dir = DISCUZ_ROOT.'./forumdata/cache/';
	if(!is_dir($dir)) {
		@mkdir($dir, 0777);
	}		
	if(@$fp = fopen("$dir$prefix$script.php", 'w')) {
		fwrite($fp, "<?php\n//Discuz! cache file, DO NOT modify me!\n".
			"//Created on ".date("M j, Y, G:i")."\n\n$cachedata?>");
		fclose($fp);
	} else {
		dexit('Can not write to cache files, please check directory ./forumdata/ and ./forumdata/cache/ .');
	}
}

function getcachearray($cachename) {
	global $db, $timestamp, $tablepre;

	$cols = '*';
	$conditions = '';
	switch($cachename) {
		case 'settings':
			$table = 'settings';
			$conditions = "WHERE variable NOT IN ('bbrules', 'bbrulestxt', 'maxonlines', 'welcomemsg', 'welcomemsgtxt')";
			break;
		case 'usergroups':
			$table = 'usergroups';
			$cols = 'groupid, type, grouptitle, creditshigher, creditslower, stars, color, groupavatar, readaccess, allowavatar, allowcusbbcode, allowuseblog';
			$conditions = "ORDER BY creditslower";
			break;
		case 'ranks':
			$table = 'ranks';
			$cols = 'ranktitle, postshigher, stars, color';
			$conditions = "ORDER BY postshigher DESC";
			break;
		case 'announcements':
			$table = 'announcements';
			$cols = 'id, subject, starttime, endtime';
			$conditions = "ORDER BY displayorder, starttime DESC, id DESC";
			break;
		case 'announcements_forum':
			$table = 'announcements a';
			$cols = 'a.id, a.author, a.message, m.uid AS authorid, a.subject, a.starttime';
			$conditions = "LEFT JOIN {$tablepre}members m ON m.username=a.author ORDER BY a.displayorder, a.starttime DESC, a.id DESC LIMIT 1";
			break;
		case 'globalstick':
			$table = 'forums';
			$cols = 'fid, type, fup';
			$conditions = "WHERE status='1' AND type IN ('forum', 'sub') ORDER BY type";
			break;
		case 'forums':
			$table = 'forums f';
			$cols = 'f.fid, f.type, f.name, f.fup, ff.viewperm, a.uid';
			$conditions = "LEFT JOIN {$tablepre}forumfields ff ON ff.fid=f.fid LEFT JOIN {$tablepre}access a ON a.fid=f.fid AND a.allowview='1' WHERE f.status='1' ORDER BY displayorder";
			break;
		case 'onlinelist':
			$table = 'onlinelist';
			$conditions = "ORDER BY displayorder";
			break;
		case 'forumlinks':
			$table = 'forumlinks';
			$conditions = "ORDER BY displayorder";
			break;
		case 'bbcodes':
			$table = 'bbcodes';
			$conditions = "WHERE available='1'";
			break;
		case 'smilies':
			$table = 'smilies';
			$cols = 'code, url';
			$conditions = "WHERE type='smiley' ORDER BY LENGTH(code) DESC";
			break;
		case 'smilies_display':
			$table = 'smilies';
			$cols = 'code, url';
			$conditions = "WHERE type='smiley' ORDER BY displayorder";
			break;
		case 'icons':
			$table = 'smilies';
			$cols = 'id, url';
			$conditions = "WHERE type='icon' ORDER BY displayorder";
			break;
		case 'fields_required':
			$table = 'profilefields';
			$cols = 'fieldid, invisible, title, description, required, unchangeable, selective, choices';
			$conditions = "WHERE available='1' AND required='1' ORDER BY displayorder";
			break;
		case 'fields_optional':
			$table = 'profilefields';
			$cols = 'fieldid, invisible, title, description, required, unchangeable, selective, choices';
			$conditions = "WHERE available='1' AND required='0' ORDER BY displayorder";
			break;
		case 'fields_thread':
			$table = 'profilefields';
			$cols = 'fieldid, title, selective, choices';
			$conditions = "WHERE available='1' AND invisible='0' AND showinthread='1' ORDER BY displayorder";
			break;
		case 'ipbanned':
			$db->query("DELETE FROM {$tablepre}banned WHERE expiration<'$timestamp'");
			$table = 'banned';
			$cols = 'ip1, ip2, ip3, ip4, expiration';
			break;
		case 'censor':
			$table = 'words';
			$cols = 'find, replacement';
			break;
		case 'medals':
			$table = 'medals';
			$cols = 'medalid, name, image';
			$conditions = "WHERE available='1'";
			break;
	}

	$data = array();

	$query = $db->query("SELECT $cols FROM {$tablepre}$table $conditions");
	switch($cachename) {
		case 'settings':
			while($setting = $db->fetch_array($query)) {
				if($setting['variable'] == 'extcredits') {
					if(is_array($setting['value'] = unserialize($setting['value']))) {
						foreach($setting['value'] as $key => $value) {
							if($value['available']) {
								unset($setting['value'][$key]['available']);
							} else {
								unset($setting['value'][$key]);
							}
						}
					}
				} elseif($setting['variable'] == 'creditspolicy') {
					$setting['value'] = unserialize($setting['value']);
				} elseif($setting['variable'] == 'creditsformula') {
					$setting['value'] = preg_replace("/(digestposts|posts|pageviews|oltime|extcredits[1-8])/", "\$member['\\1']", $setting['value']);
				} elseif($setting['variable'] == 'maxsmilies') {
					$setting['value'] = $setting['value'] <= 0 ? -1 : $setting['value'];
				}
				$GLOBALS[$setting['variable']] = $data[$setting['variable']] = $setting['value'];
			}
			$data['avatarext'] = "gif\tjpg\tpng";
			if($data['stylejump']) {
				$data['stylejump'] = array();
				$query = $db->query("SELECT styleid, name FROM {$tablepre}styles WHERE available='1'");
				while($style = $db->fetch_array($query)) {
					$data['stylejump'][$style['styleid']] = dhtmlspecialchars($style['name']);
				}
			}
			$query = $db->query("SELECT COUNT(*) FROM {$tablepre}members");
			$GLOBALS['totlamembers'] = $data['totalmembers'] = $db->result($query, 0);
			$query = $db->query("SELECT username FROM {$tablepre}members ORDER BY uid DESC LIMIT 1");
			$GLOBALS['lastmember'] = $data['lastmember'] = $db->result($query, 0);
			$GLOBALS['version'] = $data['version'] = DISCUZ_KERNEL_VERSION;
			$modreasonsarray = array();
			foreach(explode("\n", trim($data['modreasons'])) as $reason) {
				$reason = trim($reason);
				$modreasonarray[] = $reason ? array(dhtmlspecialchars($reason), $reason) : array('', '--------');
			}
			$GLOBALS['modreasons'] = $data['modreasons'] = $modreasonarray;