404.php RQCMS PHP文章管理系统 v2.3PHP源码程序 - php源码程序

www.gusucode.com > RQCMS PHP文章管理系统 v2.3PHP源码程序 > RQCMS PHP文章管理系统 v2.3/rqcms_v2.3/rqcms_v2.3/core/404.php
    <?php
$rqhost=RQ_HOST;
	
//没有找到站点信息的话就禁止访问
if(empty($host))
{
	header("http/1.1 403 Forbidden");
print <<<EOT
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<HTML><HEAD>
<TITLE>403 Forbidden</TITLE>
</HEAD><BODY>
<H1>Forbidden</H1>
You are forbidden to visit on this server.<P>
<HR>
<ADDRESS>Web Server at {$rqhost} Port {$_SERVER["SERVER_PORT"]}</ADDRESS>
</BODY></HTML>
EOT;
	exit();
}

//robots.txt
if(RQ_FILE=='robots.txt')
{
	header('Content-Type: text/plain; charset=UTF-8');
	header('HTTP/1.0 200 OK');
	exit("User-agent: *\r\nAllow: /");
}

$notfind=substr($REQUEST_URI,1);

//先检查文件是否存在,然后检查缓存文件
$cachefile=RQ_DATA.'/cache/file_'.$host['hid'].'.php';
$themefiles=@include $cachefile;
$fileext=strtolower(substr($REQUEST_URI,-3));
if(!$themefiles&&!file_exists($cachefile)) writeCache('file_'.$host['hid'],array());

if(!is_array($themefiles)) $themefiles=array();
$themefile=RQ_DATA."/themes/$theme/".$REQUEST_URI;
doAction('404_before_output');
if(file_exists($themefile)&&$fileext!='php')
{
	if(!array_key_exists($REQUEST_URI,$themefiles))
	{
		$modified=filectime($themefile);
		$themefiles[$REQUEST_URI]=gmdate('D, d M Y H:i:s', $modified). ' GMT';
		writeCache('file_'.$host['hid'],$themefiles);
	}
	//时间判断
	if(array_key_exists('HTTP_IF_MODIFIED_SINCE',$_SERVER))
	{
		if($_SERVER['HTTP_IF_MODIFIED_SINCE']==$themefiles[$REQUEST_URI])
		{
			header('HTTP/1.0 304 Not Modified');
			exit;
		}
	}
	ob_end_clean();
	header("Cache-Control: max-age=259200");
	$contentType='Content-Type: text/html; charset=UTF-8';
	if($fileext=='css') $contentType='Content-Type: text/css; charset=UTF-8';
	if(in_array($fileext,array('jpg','png','gif'))) $contentType='Content-Type: image/jpeg';
	header($contentType);
	header("Last-Modified: ".$themefiles[$REQUEST_URI]); //Fri, 31 Oct 2008 02:14:04 GMT
	readfile(RQ_DATA."/themes/$theme/".$REQUEST_URI);
	exit();
}

//检查网址跳转
$redirects=isset($setting['redirect'])?$setting['redirect']:array();//加载所有站点信息
if(!empty($redirects)&&count($redirects)>0)
{
	$request_url=ltrim($_SERVER['REQUEST_URI'],'/');
	foreach($redirects as $rds=>$ns)
	{
		if(preg_match("/^$rds$/i", $request_url, $matches))
		{
			$rurl='';
			if(strpos($ns[0],'$')===false)
			{
				$rurl=$ns[0];
			}
			else 
			{
				$rurl=preg_replace("/^$rds$/i",$ns[0],$request_url);
			}
			if(strncasecmp($rurl,"http",4)!=0) $rurl=RQ_HTTP.$host['host'].'/'.$rurl;
			if($ns[1]=='1') header("HTTP/1.1 301 Moved Permanently");
			header("Location: $rurl");
			exit();
		}
	}
}

header('HTTP/1.1 404 Not Found');
if(!file_exists($tempView))
{
?>
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<HTML><HEAD>
<TITLE>404 Not Found</TITLE>
</HEAD><BODY>
<H1>Not Found</H1>
The requested URL <?php echo $REQUEST_URI;?> was not found on this server.<P>
<HR>
<ADDRESS>Web Server at <?php echo RQ_HOST;?> Port <?php echo $_SERVER["SERVER_PORT"];?></ADDRESS>
</BODY></HTML>
<?php
exit();
}
?>