global.func.php

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	global $groupid, $extgroupids;

	$groupidarray = array($groupid);
	foreach(explode("\t", $extgroupids) as $extgroupid) {
		if($extgroupid = intval(trim($extgroupid))) {
			$groupidarray[] = $extgroupid;
		}
	}
	return preg_match("/(^|\t)(".implode('|', $groupidarray).")(\t|$)/", $permstr);
}

function formulaperm($formula, $type = 0) {
	global $_DSESSION, $extcredits, $formulamessage, $usermsg, $forum, $language;

	if((!$formula || $_DSESSION['adminid'] == 1 || $forum['ismoderator']) && !$type) {
		return;
	}
	$formula = unserialize($formula);$formula = $formula[1];
	if(!$formula) {
		return;
	}
	@eval("\$formulaperm = ($formula) ? TRUE : FALSE;");
	if(!$formulaperm || $type == 2) {
		include_once language('misc');
		$search = array('$_DSESSION[\'digestposts\']', '$_DSESSION[\'posts\']', '$_DSESSION[\'oltime\']', '$_DSESSION[\'pageviews\']');
		$replace = array($language['formulaperm_digestposts'], $language['formulaperm_posts'], $language['formulaperm_oltime'], $language['formulaperm_pageviews']);
		for($i = 1; $i <= 8; $i++) {
			$search[] = '$_DSESSION[\'extcredits'.$i.'\']';
			$replace[] = $extcredits[$i]['title'] ? $extcredits[$i]['title'] : $language['formulaperm_extcredits'].$i;
		}
		$i = 0;$usermsg = '';
		foreach($search as $s) {
			$usermsg .= strexists($formula, $s) ? $replace[$i].' = '.(@eval('return intval('.$s.');')).'&nbsp;&nbsp;&nbsp;' : '';
			$i++;
		}
		$search = array_merge($search, array('and', 'or', '>=', '<='));
		$replace = array_merge($replace, array('&nbsp;&nbsp;'.$language['formulaperm_and'].'&nbsp;&nbsp;', '&nbsp;&nbsp;'.$language['formulaperm_or'].'&nbsp;&nbsp;', '&ge;', '&le;'));
		$formulamessage = str_replace($search, $replace, $formula);

		if($type == 1) {
			showmessage('medal_permforum_nopermission', NULL, 'NOPERM');
		} elseif($type == 2) {
			return $formulamessage;
		} else {
			showmessage('forum_permforum_nopermission', NULL, 'NOPERM');
		}
	}
	return TRUE;
}

function getgroupid($uid, $group, &$member) {
	global $creditsformula, $db, $tablepre;

	if(!empty($creditsformula)) {
		$updatearray = array();
		eval("\$credits = round($creditsformula);");

		if($credits != $member['credits']) {
			$updatearray[] = "credits='$credits'";
			$member['credits'] = $credits;
		}
		if($group['type'] == 'member' && !($member['credits'] >= $group['creditshigher'] && $member['credits'] < $group['creditslower'])) {
			$query = $db->query("SELECT groupid FROM {$tablepre}usergroups WHERE type='member' AND $member[credits]>=creditshigher AND $member[credits]<creditslower LIMIT 1");
			if($db->num_rows($query)) {
				$member['groupid'] = $db->result($query, 0);
				$updatearray[] = "groupid='$member[groupid]'";
			}
		}

		if($updatearray) {
			$db->query("UPDATE {$tablepre}members SET ".implode(', ', $updatearray)." WHERE uid='$uid'");
		}
	}

	return $member['groupid'];
}

function getrobot() {
	if(!defined('IS_ROBOT')) {
		$kw_spiders = 'Bot|Crawl|Spider|slurp|sohu-search|lycos|robozilla';
		$kw_browsers = 'MSIE|Netscape|Opera|Konqueror|Mozilla';
		if(preg_match("/($kw_browsers)/i", $_SERVER['HTTP_USER_AGENT'])) {
			define('IS_ROBOT', FALSE);
		} elseif(preg_match("/($kw_spiders)/i", $_SERVER['HTTP_USER_AGENT'])) {
			define('IS_ROBOT', TRUE);
		} else {
			define('IS_ROBOT', FALSE);
		}
	}
	return IS_ROBOT;
}

function get_home($uid) {
	$uid = sprintf("%05d", $uid);
	$dir1 = substr($uid, 0, -4);
	$dir2 = substr($uid, -4, 2);
	$dir3 = substr($uid, -2, 2);
	return $dir1.'/'.$dir2.'/'.$dir3;
}

function groupexpiry($terms) {
	$terms = is_array($terms) ? $terms : unserialize($terms);
	$groupexpiry = isset($terms['main']['time']) ? intval($terms['main']['time']) : 0;
	if(is_array($terms['ext'])) {
		foreach($terms['ext'] as $expiry) {
			if((!$groupexpiry && $expiry) || $expiry < $groupexpiry) {
				$groupexpiry = $expiry;
			}
		}
	}
	return $groupexpiry;
}

function ipaccess($ip, $accesslist) {
	return preg_match("/^(".str_replace(array("\r\n", ' '), array('|', ''), preg_quote($accesslist, '/')).")/", $ip);
}

function implodeids($array) {
	if(!empty($array)) {
		return "'".implode("','", is_array($array) ? $array : array($array))."'";
	} else {
		return '';
	}
}

function ipbanned($onlineip) {
	global $ipaccess, $timestamp, $cachelost;

	if($ipaccess && !ipaccess($onlineip, $ipaccess)) {
		return TRUE;
	}

	$cachelost .= (@include DISCUZ_ROOT.'./forumdata/cache/cache_ipbanned.php') ? '' : ' ipbanned';
	if(empty($_DCACHE['ipbanned'])) {
		return FALSE;
	} else {
		if($_DCACHE['ipbanned']['expiration'] < $timestamp) {
			@unlink(DISCUZ_ROOT.'./forumdata/cache/cache_ipbanned.php');
		}
		return preg_match("/^(".$_DCACHE['ipbanned']['regexp'].")$/", $onlineip);
	}
}

function isemail($email) {
	return strlen($email) > 6 && preg_match("/^[\w\-\.]+@[\w\-\.]+(\.\w+)+$/", $email);
}

function language($file, $templateid = 0, $tpldir = '') {
	$tpldir = $tpldir ? $tpldir : TPLDIR;
	$templateid = $templateid ? $templateid : TEMPLATEID;

	$languagepack = DISCUZ_ROOT.'./'.$tpldir.'/'.$file.'.lang.php';
	if(file_exists($languagepack)) {
		return $languagepack;
	} elseif($templateid != 1 && $tpldir != './templates/default') {
		return language($file, 1, './templates/default');
	} else {
		return FALSE;
	}
}

function multi($num, $perpage, $curpage, $mpurl, $maxpages = 0, $page = 10, $autogoto = TRUE, $simple = FALSE) {
	global $maxpage;
	$ajaxtarget = !empty($_GET['ajaxtarget']) ? " ajaxtarget=\"".dhtmlspecialchars($_GET['ajaxtarget'])."\" " : '';

	$multipage = '';
	$mpurl .= strpos($mpurl, '?') ? '&amp;' : '?';
	$realpages = 1;
	if($num > $perpage) {
		$offset = 2;

		$realpages = @ceil($num / $perpage);
		$pages = $maxpages && $maxpages < $realpages ? $maxpages : $realpages;

		if($page > $pages) {
			$from = 1;
			$to = $pages;
		} else {
			$from = $curpage - $offset;
			$to = $from + $page - 1;
			if($from < 1) {
				$to = $curpage + 1 - $from;
				$from = 1;
				if($to - $from < $page) {
					$to = $page;
				}
			} elseif($to > $pages) {
				$from = $pages - $page + 1;
				$to = $pages;
			}
		}

		$multipage = ($curpage - $offset > 1 && $pages > $page ? '<a href="'.$mpurl.'page=1" class="first"'.$ajaxtarget.'>1 ...</a>' : '').
			($curpage > 1 && !$simple ? '<a href="'.$mpurl.'page='.($curpage - 1).'" class="prev"'.$ajaxtarget.'>&lsaquo;&lsaquo;</a>' : '');
		for($i = $from; $i <= $to; $i++) {
			$multipage .= $i == $curpage ? '<strong>'.$i.'</strong>' :
				'<a href="'.$mpurl.'page='.$i.($ajaxtarget && $i == $pages && $autogoto ? '#' : '').'"'.$ajaxtarget.'>'.$i.'</a>';
		}

		$multipage .= ($curpage < $pages && !$simple ? '<a href="'.$mpurl.'page='.($curpage + 1).'" class="next"'.$ajaxtarget.'>&rsaquo;&rsaquo;</a>' : '').
			($to < $pages ? '<a href="'.$mpurl.'page='.$pages.'" class="last"'.$ajaxtarget.'>... '.$realpages.'</a>' : '').
			(!$simple && $pages > $page && !$ajaxtarget ? '<kbd><input type="text" name="custompage" size="3" onkeydown="if(event.keyCode==13) {window.location=\''.$mpurl.'page=\'+this.value; return false;}" /></kbd>' : '');

		$multipage = $multipage ? '<div class="pages">'.(!$simple ? '<em>&nbsp;'.$num.'&nbsp;</em>' : '').$multipage.'</div>' : '';
	}
	$maxpage = $realpages;
	return $multipage;
}

function output() {
	if(defined('DISCUZ_OUTPUTED')) {
		return;
	}
	define('DISCUZ_OUTPUTED', 1);
	global $sid, $transsidstatus, $rewritestatus, $ftp, $advlist, $insenz, $queryfloat, $thread, $inajax;

	if(($advlist || !empty($insenz['hardadstatus']) || $queryfloat) && !defined('IN_ADMINCP') && !(CURSCRIPT == 'viewthread' && $thread['digest'] == '-1') && !$inajax) {
		include template('adv');
	}

	if(($transsidstatus = empty($GLOBALS['_DCOOKIE']['sid']) && $transsidstatus) || $rewritestatus) {
		if($transsidstatus) {
			$searcharray = array
				(
				"/\<a(\s*[^\>]+\s*)href\=([\"|\']?)([^\"\'\s]+)/ies",
				"/(\<form.+?\>)/is"
				);
			$replacearray = array
				(
				"transsid('\\3','<a\\1href=\\2')",
				"\\1\n<input type=\"hidden\" name=\"sid\" value=\"$sid\" />"
				);
		} else {
			$searcharray = $replacearray = array();
			if($rewritestatus & 1) {
				$searcharray[] = "/\<a href\=\"forumdisplay\.php\?fid\=(\d+)(&amp;page\=(\d+))?\"([^\>]*)\>/e";
				$replacearray[] = "rewrite_forum('\\1', '\\3', '\\4')";
			}
			if($rewritestatus & 2) {
				$searcharray[] = "/\<a href\=\"viewthread\.php\?tid\=(\d+)(&amp;extra\=page\%3D(\d+))?(&amp;page\=(\d+))?\"([^\>]*)\>/e";
				$replacearray[] = "rewrite_thread('\\1', '\\5', '\\3', '\\6')";
			}
			if($rewritestatus & 4) {
				$searcharray[] = "/\<a href\=\"space\.php\?(uid\=(\d+)|username\=([^&]+?))\"([^\>]*)\>/e";
				$replacearray[] = "rewrite_space('\\2', '\\3', '\\4')";
			}
			if($rewritestatus & 8) {
				$searcharray[] = "/\<a href\=\"tag\.php\?name\=([^&]+?)\"([^\>]*)\>/e";
				$replacearray[] = "rewrite_tag('\\1', '\\2')";
			}
		}

		$content = preg_replace($searcharray, $replacearray, ob_get_contents());
		ob_end_clean();
		$GLOBALS['gzipcompress'] ? ob_start('ob_gzhandler') : ob_start();

		echo $content;
	}
	if($ftp['connid']) {
		@ftp_close($ftp['connid']);
	}
	$ftp = array();

	if(defined('CACHE_FILE') && CACHE_FILE && !defined('CACHE_FORBIDDEN')) {
		global $cachethreaddir;
		if(diskfreespace(DISCUZ_ROOT.'./'.$cachethreaddir) > 1000000) {
			if($fp = @fopen(CACHE_FILE, 'w')) {
				flock($fp, LOCK_EX);
				fwrite($fp, empty($content) ? ob_get_contents() : $content);
			}
			@fclose($fp);
			chmod(CACHE_FILE, 0777);
		}
	}
}

function periodscheck($periods, $showmessage = 1) {
	global $timestamp, $disableperiodctrl, $_DCACHE, $banperiods;

	if(!$disableperiodctrl && $_DCACHE['settings'][$periods]) {
		$now = gmdate('G.i', $timestamp + $_DCACHE['settings']['timeoffset'] * 3600);
		foreach(explode("\r\n", str_replace(':', '.', $_DCACHE['settings'][$periods])) as $period) {
			list($periodbegin, $periodend) = explode('-', $period);
			if(($periodbegin > $periodend && ($now >= $periodbegin || $now < $periodend)) || ($periodbegin < $periodend && $now >= $periodbegin && $now < $periodend)) {
				$banperiods = str_replace("\r\n", ', ', $_DCACHE['settings'][$periods]);
				if($showmessage) {
					showmessage('period_nopermission', NULL, 'NOPERM');
				} else {
					return TRUE;
				}
			}
		}
	}
	return FALSE;
}

function postfeed($feed) {
	global $discuz_uid, $discuz_user;

	require_once DISCUZ_ROOT.'./templates/default/feed.lang.php';
	require_once DISCUZ_ROOT.'./uc_client/client.php';

	$feed['title_template'] = $feed['title_template'] ? $language[$feed['title_template']] : '';
	$feed['body_template'] = $feed['title_template'] ? $language[$feed['body_template']] : '';

	uc_feed_add($feed['icon'], $discuz_uid, $discuz_user, $feed['title_template'], $feed['title_data'], $feed['body_template'], $feed['body_data'], '', '', $feed['images']);
}

function quescrypt($questionid, $answer) {
	return $questionid > 0 && $answer != '' ? substr(md5($answer.md5($questionid)), 16, 8) : '';
}

function rewrite_thread($tid, $page = 0, $prevpage = 0, $extra = '') {
	return '<a href="thread-'.$tid.'-'.($page ? $page : 1).'-'.($prevpage && !IS_ROBOT ? $prevpage : 1).'.html"'.stripslashes($extra).'>';
}

function rewrite_forum($fid, $page = 0, $extra = '') {
	return '<a href="forum-'.$fid.'-'.($page ? $page : 1).'.html"'.stripslashes($extra).'>';
}

function rewrite_space($uid, $username, $extra = '') {
	$GLOBALS['rewritecompatible'] && $username = rawurlencode($username);
	return '<a href="space-'.($uid ? 'uid-'.$uid : 'username-'.$username).'.html"'.stripslashes($extra).'>';
}

function rewrite_tag($name, $extra = '') {
	$GLOBALS['rewritecompatible'] && $name = rawurlencode($name);
	return '<a href="tag-'.$name.'.html"'.stripslashes($extra).'>';
}

function random($length, $numeric = 0) {
	PHP_VERSION < '4.2.0' && mt_srand((double)microtime() * 1000000);
	if($numeric) {
		$hash = sprintf('%0'.$length.'d', mt_rand(0, pow(10, $length) - 1));
	} else {
		$hash = '';
		$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz';
		$max = strlen($chars) - 1;
		for($i = 0; $i < $length; $i++) {
			$hash .= $chars[mt_rand(0, $max)];
		}
	}
	return $hash;
}

function removedir($dirname, $keepdir = FALSE) {

	$dirname = wipespecial($dirname);

	if(!is_dir($dirname)) {
		return FALSE;
	}
	$handle = opendir($dirname);
	while(($file = readdir($handle)) !== FALSE) {
		if($file != '.' && $file != '..') {
			$dir = $dirname . DIRECTORY_SEPARATOR . $file;
			is_dir($dir) ? removedir($dir) : unlink($dir);
		}
	}
	closedir($handle);
	return !$keepdir ? (@rmdir($dirname) ? TRUE : FALSE) : TRUE;
}

function request($cachekey, $fid = 0, $type = 0, $return = 0) {
	global $timestamp, $_DCACHE;
	$datalist = '';
	if($fid && in_array(CURSCRIPT, array('forumdisplay', 'viewthread'))) {