global.func.php

Discuz功能源码（开源）

function sendmail($email_to, $email_subject, $email_message, $email_from = '') {
	extract($GLOBALS, EXTR_SKIP);
	require DISCUZ_ROOT.'./include/sendmail.inc.php';
}

function sendpm($toid, $subject, $message, $fromid = '') {
	extract($GLOBALS, EXTR_SKIP);
	include language('pms');

	require_once DISCUZ_ROOT.'./uc_client/client.php';

	if(isset($language[$subject])) {
		eval("\$subject = addslashes(\"".$language[$subject]."\");");
	}
	if(isset($language[$message])) {
		eval("\$message = addslashes(\"".$language[$message]."\");");
	}

	if($fromid === '') {
		$fromid = $discuz_uid;
	}
	uc_pm_send($fromid, $toid, $subject, $message);
}

function showmessage($message, $url_forward = '', $extra = '') {
	extract($GLOBALS, EXTR_SKIP);
	global $extrahead, $discuz_uid, $discuz_action, $debuginfo, $seccode, $seccodestatus, $fid, $tid, $charset, $show_message, $inajax, $_DCACHE, $advlist;
	define('CACHE_FORBIDDEN', TRUE);
	$show_message = $message;$messagehandle = 0;
	$msgforward = unserialize($_DCACHE['settings']['msgforward']);
	$msgforward['refreshtime'] = intval($msgforward['refreshtime']) * 1000;
	$url_forward = empty($url_forward) ? '' : (empty($_DCOOKIE['sid']) && $transsidstatus ? transsid($url_forward) : $url_forward);
	$seccodecheck = $seccodestatus & 2;

	if($url_forward && (!empty($quickforward) || empty($inajax) && $msgforward['quick'] && $msgforward['messages'] && @in_array($message, $msgforward['messages']))) {
		updatesession();
		dheader("location: ".str_replace('&', '&', $url_forward));
	}
	if(!empty($infloat)) {
		if($extra) {
			$messagehandle = $extra;
		}
		$extra = '';
	}
	if(in_array($extra, array('HALTED', 'NOPERM'))) {
		$fid = $tid = 0;
		$discuz_action = 254;
	} else {
		$discuz_action = 255;
	}

	include language('messages');

	if(isset($language[$message])) {
		$pre = $inajax ? 'ajax_' : '';
		eval("\$show_message = \"".(isset($language[$pre.$message]) ? $language[$pre.$message] : $language[$message])."\";");
		unset($pre);
	}

	if(empty($infloat)) {
		$show_message .= $url_forward && empty($inajax) ? '<script>setTimeout("window.location.href =\''.$url_forward.'\';", '.$msgforward['refreshtime'].');</script>' : '';
	} elseif($handlekey) {
		$show_message = str_replace("'", "\'", strip_tags($show_message));
		if($url_forward) {
			$show_message = "<script type=\"text/javascript\" reload=\"1\">\nif($('return_$handlekey')) $('return_$handlekey').className = 'onright';\nif(typeof submithandle_$handlekey =='function') {submithandle_$handlekey('$url_forward', '$show_message');} else {location.href='$url_forward'}\n</script>";
		} else {
			$show_message .= "<script type=\"text/javascript\" reload=\"1\">\nif(typeof messagehandle_$handlekey =='function') {messagehandle_$handlekey('$messagehandle', '$show_message');}\n</script>";
		}
	}

	if($advlist = array_merge($globaladvs ? $globaladvs['type'] : array(), $redirectadvs ? $redirectadvs['type'] : array())) {
		$advitems = ($globaladvs ? $globaladvs['items'] : array()) + ($redirectadvs ? $redirectadvs['items'] : array());
		foreach($advlist AS $type => $redirectadvs) {
			$advlist[$type] = $advitems[$redirectadvs[array_rand($redirectadvs)]];
		}
	}

	if($extra == 'NOPERM') {
		include template('nopermission');
	} else {
		include template('showmessage');
	}
	dexit();
}

function site() {
	return $_SERVER['HTTP_HOST'];
}

function strexists($haystack, $needle) {
	return !(strpos($haystack, $needle) === FALSE);
}

function seccodeconvert(&$seccode) {
	global $seccodedata, $charset;
	$seccode = substr($seccode, -6);
	if($seccodedata['type'] == 1) {
		include_once language('seccode');
		$len = strtoupper($charset) == 'GBK' ? 2 : 3;
		$code = array(substr($seccode, 0, 3), substr($seccode, 3, 3));
		$seccode = '';
		for($i = 0; $i < 2; $i++) {
			$seccode .= substr($lang['chn'], $code[$i] * $len, $len);
		}
		return;
	} elseif($seccodedata['type'] == 3) {
		$s = sprintf('%04s', base_convert($seccode, 10, 20));
		$seccodeunits = 'CEFHKLMNOPQRSTUVWXYZ';
	} else {
		$s = sprintf('%04s', base_convert($seccode, 10, 24));
		$seccodeunits = 'BCEFGHJKMPQRTVWXY2346789';
	}
	$seccode = '';
	for($i = 0; $i < 4; $i++) {
		$unit = ord($s{$i});
		$seccode .= ($unit >= 0x30 && $unit <= 0x39) ? $seccodeunits[$unit - 0x30] : $seccodeunits[$unit - 0x57];
	}
}

function submitcheck($var, $allowget = 0, $seccodecheck = 0, $secqaacheck = 0) {
	if(empty($GLOBALS[$var])) {
		return FALSE;
	} else {
		global $_SERVER, $seclevel, $seccode, $seccodedata, $seccodeverify, $secanswer, $_DCACHE, $_DCOOKIE, $timestamp, $discuz_uid;
		if($allowget || ($_SERVER['REQUEST_METHOD'] == 'POST' && $GLOBALS['formhash'] == formhash() && empty($_SERVER['HTTP_X_FLASH_VERSION']) && (empty($_SERVER['HTTP_REFERER']) ||
			preg_replace("/https?:\/\/([^\:\/]+).*/i", "\\1", $_SERVER['HTTP_REFERER']) == preg_replace("/([^\:]+).*/", "\\1", $_SERVER['HTTP_HOST'])))) {
        		if($seccodecheck) {
        			if(!$seclevel) {
        				$key = $seccodedata['type'] != 3 ? '' : $_DCACHE['settings']['authkey'].date('Ymd');
        				list($seccode, $expiration, $seccodeuid) = explode("\t", authcode($_DCOOKIE['secc'], 'DECODE', $key));
        				if($seccodeuid != $discuz_uid || $timestamp - $expiration > 600) {
        					showmessage('submit_seccode_invalid');
        				}
        				dsetcookie('secc', '');
        			} else {
        				$tmp = substr($seccode, 0, 1);
        			}
        			seccodeconvert($seccode);
        			if(strtoupper($seccodeverify) != $seccode) {
        				showmessage('submit_seccode_invalid');
        			}
				$seclevel && $seccode = random(6, 1) + $tmp * 1000000;
        		}
			if($secqaacheck) {
        			if(!$seclevel) {
        				list($seccode, $expiration, $seccodeuid) = explode("\t", authcode($_DCOOKIE['secq'], 'DECODE'));
        				if($seccodeuid != $discuz_uid || $timestamp - $expiration > 600) {
        					showmessage('submit_secqaa_invalid');
        				}
        				dsetcookie('secq', '');
        			}
        			require_once DISCUZ_ROOT.'./forumdata/cache/cache_secqaa.php';
        			if(md5($secanswer) != $_DCACHE['secqaa'][substr($seccode, 0, 1)]['answer']) {
        			        showmessage('submit_secqaa_invalid');
        			}
				$seclevel && $seccode = random(1, 1) * 1000000 + substr($seccode, -6);
        		}
			return TRUE;
		} else {
			showmessage('submit_invalid');
		}
	}
}

function template($file, $templateid = 0, $tpldir = '') {
	global $inajax;
	$file .= $inajax && ($file == 'header' || $file == 'footer') ? '_ajax' : '';
	$tpldir = $tpldir ? $tpldir : TPLDIR;
	$templateid = $templateid ? $templateid : TEMPLATEID;

	$tplfile = DISCUZ_ROOT.'./'.$tpldir.'/'.$file.'.htm';
	$objfile = DISCUZ_ROOT.'./forumdata/templates/'.$templateid.'_'.$file.'.tpl.php';
	if($templateid != 1 && !file_exists($tplfile)) {
		$tplfile = DISCUZ_ROOT.'./templates/default/'.$file.'.htm';
	}
	@checktplrefresh($tplfile, $tplfile, filemtime($objfile), $templateid, $tpldir);

	return $objfile;
}

function transsid($url, $tag = '', $wml = 0) {
	global $sid;
	$tag = stripslashes($tag);
	if(!$tag || (!preg_match("/^(http:\/\/|mailto:|#|javascript)/i", $url) && !strpos($url, 'sid='))) {
		if($pos = strpos($url, '#')) {
			$urlret = substr($url, $pos);
			$url = substr($url, 0, $pos);
		} else {
			$urlret = '';
		}
		$url .= (strpos($url, '?') ? ($wml ? '&amp;' : '&') : '?').'sid='.$sid.$urlret;
	}
	return $tag.$url;
}

function typeselect($curtypeid = 0) {
	if($threadtypes = $GLOBALS['forum']['threadtypes']) {
		$html = '<select name="typeid" id="typeid"><option value="0">&nbsp;</option>';
		foreach($threadtypes['types'] as $typeid => $name) {
			$html .= '<option value="'.$typeid.'" '.($curtypeid == $typeid ? 'selected' : '').'>'.strip_tags($name).'</option>';
		}
		$html .= '</select>';
		return $html;
	} else {
		return '';
	}
}

function sortselect($cursortid = 0, $modelid = 0, $onchange = '') {
	global $fid, $sid, $extra;
	if($threadsorts = $GLOBALS['forum']['threadsorts']) {
		$onchange = $onchange ? $onchange : "onchange=\"ajaxget('post.php?action=threadsorts&sortid='+this.options[this.selectedIndex].value+'&fid=$fid&sid=$sid', 'threadsorts', 'threadsortswait')\"";
		$selecthtml = '';
		foreach($threadsorts['types'] as $sortid => $name) {
			$sorthtml = '<option value="'.$sortid.'" '.($cursortid == $sortid ? 'selected="selected"' : '').' class="special">'.strip_tags($name).'</option>';
			$selecthtml .= $modelid ? ($threadsorts['modelid'][$sortid] == $modelid ? $sorthtml : '') : $sorthtml;
		}
		$hiddeninput = $cursortid ? '<input type="hidden" name="sortid" value="'.$cursortid.'" />' : '';
		$html = '<select name="sortid" '.$onchange.'><option value="0">&nbsp;</option>'.$selecthtml.'</select><span id="threadsortswait"></span>'.$hiddeninput;
		return $html;
	} else {
		return '';
	}
}

function updatecredits($uids, $creditsarray, $coef = 1, $extrasql = '') {
	if($uids && ((!empty($creditsarray) && is_array($creditsarray)) || $extrasql)) {
		global $db, $tablepre, $discuz_uid, $creditnotice, $cookiecredits;
		$self = $creditnotice && $uids == $discuz_uid;
		if($self && !isset($cookiecredits)) {
			$cookiecredits = !empty($_COOKIE['discuz_creditnotice']) ? explode('D', $_COOKIE['discuz_creditnotice']) : array_fill(0, 9, 0);
		}
		$creditsadd = $comma = '';
		foreach($creditsarray as $id => $addcredits) {
			$creditsadd .= $comma.'extcredits'.$id.'=extcredits'.$id.'+('.intval($addcredits).')*('.$coef.')';
			$comma = ', ';
			if($self) {
				$cookiecredits[$id] += intval($addcredits) * $coef;
			}
		}
		if($self) {
			dsetcookie('discuz_creditnotice', implode('D', $cookiecredits).'D'.$discuz_uid, 43200, 0);
		}

		if($creditsadd || $extrasql) {
			$db->query("UPDATE {$tablepre}members SET $creditsadd ".($creditsadd && $extrasql ? ', ' : '')." $extrasql WHERE uid IN ('$uids')", 'UNBUFFERED');
		}
	}
}

function updatesession() {
	if(!empty($GLOBALS['sessionupdated'])) {
		return TRUE;
	}

	global $db, $tablepre, $sessionexists, $sessionupdated, $sid, $onlineip, $discuz_uid, $discuz_user, $timestamp, $lastactivity, $seccode,
		$pvfrequence, $spageviews, $lastolupdate, $oltimespan, $onlinehold, $groupid, $styleid, $invisible, $discuz_action, $fid, $tid;

	$fid = intval($fid);
	$tid = intval($tid);

	if($oltimespan && $discuz_uid && $lastactivity && $timestamp - ($lastolupdate ? $lastolupdate : $lastactivity) > $oltimespan * 60) {
		$lastolupdate = $timestamp;
		$db->query("UPDATE {$tablepre}onlinetime SET total=total+'$oltimespan', thismonth=thismonth+'$oltimespan', lastupdate='$timestamp' WHERE uid='$discuz_uid' AND lastupdate<='".($timestamp - $oltimespan * 60)."'");
		if(!$db->affected_rows()) {
			$db->query("INSERT INTO {$tablepre}onlinetime (uid, thismonth, total, lastupdate)
				VALUES ('$discuz_uid', '$oltimespan', '$oltimespan', '$timestamp')", 'SILENT');
		}
	} else {
		$lastolupdate = intval($lastolupdate);
	}

	if($sessionexists == 1) {
		if($pvfrequence && $discuz_uid) {
			if($spageviews >= $pvfrequence) {
				$pageviewsadd = ', pageviews=\'0\'';
				$db->query("UPDATE {$tablepre}members SET pageviews=pageviews+'$spageviews' WHERE uid='$discuz_uid'", 'UNBUFFERED');
			} else {
				$pageviewsadd = ', pageviews=pageviews+1';
			}
		} else {
			$pageviewsadd = '';
		}
		$db->query("UPDATE {$tablepre}sessions SET uid='$discuz_uid', username='$discuz_user', groupid='$groupid', styleid='$styleid', invisible='$invisible', action='$discuz_action', lastactivity='$timestamp', lastolupdate='$lastolupdate', seccode='$seccode', fid='$fid', tid='$tid' $pageviewsadd WHERE sid='$sid'");
	} else {
		$ips = explode('.', $onlineip);

		$db->query("DELETE FROM {$tablepre}sessions WHERE sid='$sid' OR lastactivity<($timestamp-$onlinehold) OR ('$discuz_uid'<>'0' AND uid='$discuz_uid') OR (uid='0' AND ip1='$ips[0]' AND ip2='$ips[1]' AND ip3='$ips[2]' AND ip4='$ips[3]' AND lastactivity>$timestamp-60)");
		$db->query("INSERT INTO {$tablepre}sessions (sid, ip1, ip2, ip3, ip4, uid, username, groupid, styleid, invisible, action, lastactivity, lastolupdate, seccode, fid, tid)
			VALUES ('$sid', '$ips[0]', '$ips[1]', '$ips[2]', '$ips[3]', '$discuz_uid', '$discuz_user', '$groupid', '$styleid', '$invisible', '$discuz_action', '$timestamp', '$lastolupdate', '$seccode', '$fid', '$tid')", 'SILENT');
		if($discuz_uid && $timestamp - $lastactivity > 21600) {
			if($oltimespan && $timestamp - $lastactivity > 86400) {
				$query = $db->query("SELECT total FROM {$tablepre}onlinetime WHERE uid='$discuz_uid'");
				$oltimeadd = ', oltime='.round(intval($db->result($query, 0)) / 60);
			} else {
				$oltimeadd = '';
			}
			$db->query("UPDATE {$tablepre}members SET lastip='$onlineip', lastvisit=lastactivity, lastactivity='$timestamp' $oltimeadd WHERE uid='$discuz_uid'", 'UNBUFFERED');
		}
	}

	$sessionupdated = 1;
}
function updatemodworks($modaction, $posts = 1) {
	global $modworkstatus, $db, $tablepre, $discuz_uid, $timestamp, $_DCACHE;
	$today = gmdate('Y-m-d', $timestamp + $_DCACHE['settings']['timeoffset'] * 3600);
	if($modworkstatus && $modaction && $posts) {
		$db->query("UPDATE {$tablepre}modworks SET count=count+1, posts=posts+'$posts' WHERE uid='$discuz_uid' AND modaction='$modaction' AND dateline='$today'");
		if(!$db->affected_rows()) {
			$db->query("INSERT INTO {$tablepre}modworks (uid, modaction, dateline, count, posts) VALUES ('$discuz_uid', '$modaction', '$today', 1, '$posts')");
		}
	}
}

function writelog($file, $log) {
	global $timestamp, $_DCACHE;
	$yearmonth = gmdate('Ym', $timestamp + $_DCACHE['settings']['timeoffset'] * 3600);
	$logdir = DISCUZ_ROOT.'./forumdata/logs/';
	$logfile = $logdir.$yearmonth.'_'.$file.'.php';
	if(@filesize($logfile) > 2048000) {
		$dir = opendir($logdir);
		$length = strlen($file);
		$maxid = $id = 0;
		while($entry = readdir($dir)) {
			if(strexists($entry, $yearmonth.'_'.$file)) {
				$id = intval(substr($entry, $length + 8, -4));
				$id > $maxid && $maxid = $id;
			}
		}
		closedir($dir);

		$logfilebak = $logdir.$yearmonth.'_'.$file.'_'.($maxid + 1).'.php';
		@rename($logfile, $logfilebak);
	}
	if($fp = @fopen($logfile, 'a')) {
		@flock($fp, 2);
		$log = is_array($log) ? $log : array($log);
		foreach($log as $tmp) {
			fwrite($fp, "<?PHP exit;?>\t".str_replace(array('<?', '?>'), '', $tmp)."\n");
		}
		fclose($fp);
	}
}

function wipespecial($str) {
	return str_replace(array( "\n", "\r", '..'), array('', '', ''), $str);
}

function discuz_uc_avatar($uid, $size = '', $returnsrc = FALSE) {
	if($uid > 0) {
		$size = in_array($size, array('big', 'middle', 'small')) ? $size : 'middle';
		$uid = abs(intval($uid));
		if(empty($GLOBALS['avatarmethod'])) {
			return $returnsrc ? UC_API.'/avatar.php?uid='.$uid.'&size='.$size : '<img src="'.UC_API.'/avatar.php?uid='.$uid.'&size='.$size.'" />';
		} else {
			$uid = sprintf("%09d", $uid);
			$dir1 = substr($uid, 0, 3);
			$dir2 = substr($uid, 3, 2);
			$dir3 = substr($uid, 5, 2);
			$file = UC_API.'/data/avatar/'.$dir1.'/'.$dir2.'/'.$dir3.'/'.substr($uid, -2).'_avatar_'.$size.'.jpg';
			return $returnsrc ? $file : '<img src="'.$file.'" onerror="this.onerror=null;this.src=\''.UC_API.'/images/noavatar_'.$size.'.gif\'" />';
		}
	} else {
		$file = $GLOBALS['boardurl'].IMGDIR.'/syspm.gif';
		return $returnsrc ? $file : '<img src="'.$file.'" />';
	}
}


function loadmultiserver($type = '') {
	global $db, $dbcharset, $multiserver;
	$type = empty($type) && defined('CURSCRIPT') ? CURSCRIPT : $type;
	static $sdb = null;
	if($type && !empty($multiserver['enable'][$type])) {
		if(!is_a($sdb, 'dbstuff')) $sdb = new dbstuff();
		if($sdb->link > 0) {
			return $sdb;
		} elseif($sdb->link === null && (!empty($multiserver['slave']['dbhost']) || !empty($multiserver[$type]['dbhost']))) {
			$setting = !empty($multiserver[$type]['host']) ? $multiserver[$type] : $multiserver['slave'];
			$sdb->connect($setting['dbhost'], $setting['dbuser'], $setting['dbpw'], $setting['dbname'], $setting['pconnect'], false, $dbcharset);
			if($sdb->link) {
				return $sdb;
			} else {
				$sdb->link = -32767;
			}
		}
	}
	return $db;
}

function swapclass($classname) {
	global $swapc;
	$swapc = isset($swapc) && $swapc != $classname ? $classname : '';
	return $swapc;
}

?>