<?php 
class http
{
	var $method;
	var $cookie;
	var $post;
	var $header;
	var $ContentType;
	var $errno;
	var $errstr;

    function __construct()
    {
		$this->method = 'GET';
		$this->cookie = '';
		$this->post = '';
		$this->header = '';
		$this->errno = 0;
		$this->errstr = '';
    }

	function http()
	{
		$this->__construct();
	}

	function post($url, $data = array(), $referer = '', $limit = 0, $timeout = 30, $block = TRUE)
	{
		$this->method = 'POST';
		$this->ContentType = "Content-Type: application/x-www-form-urlencoded\r\n";
		if($data)
		{
			$post = '';
			foreach($data as $k=>$v)
			{
				$post .= $k.'='.rawurlencode($v).'&';
			}
			$this->post .= substr($post, 0, -1);
		}
		return $this->request($url, $referer, $limit, $timeout, $block);
	}

	function get($url, $referer = '', $limit = 0, $timeout = 30, $block = TRUE)
	{
		$this->method = 'GET';
		return $this->request($url, $referer, $limit, $timeout, $block);
	}

	function upload($url, $data = array(), $files = array(), $referer = '', $limit = 0, $timeout = 30, $block = TRUE)
	{
		$this->method = 'POST';
		$boundary = "AaB03x";
		$this->ContentType = "Content-Type: multipart/form-data; boundary=$boundary\r\n";
		if($data)
		{
			foreach($data as $k => $v)
			{ 
				$this->post .= "--$boundary\r\n"; 
				$this->post .= "Content-Disposition: form-data; name=\"".$k."\"\r\n"; 
				$this->post .= "\r\n".$v."\r\n"; 
				$this->post .= "--$boundary\r\n";
			} 
		}
		foreach($files as $k=>$v)
		{
            $this->post .= "--$boundary\r\n"; 
			$this->post .= "Content-Disposition: file; name=\"$k\"; filename=\"".basename($v)."\"\r\n"; 
			$this->post .= "Content-Type: ".$this->get_mime($v)."\r\n"; 
			$this->post .= "\r\n".file_get_contents($v)."\r\n"; 
			$this->post .= "--$boundary\r\n"; 
		}
        $this->post .= "--$boundary--\r\n";
		return $this->request($url, $referer, $limit, $timeout, $block);
	}
    
	function request($url, $referer = '', $limit = 0, $timeout = 30, $block = TRUE)
	{
		$matches = parse_url($url);
		$host = $matches['host'];
		$path = $matches['path'] ? $matches['path'].($matches['query'] ? '?'.$matches['query'] : '') : '/';
		$port = $matches['port'] ? $matches['port'] : 80;
		if($referer == '') $referer = URL;
		$out = "$this->method $path HTTP/1.1\r\n";
		$out .= "Accept: */*\r\n";
		$out .= "Referer: $referer\r\n";
		$out .= "Accept-Language: zh-cn\r\n";
		$out .= "User-Agent: ".$_SERVER['HTTP_USER_AGENT']."\r\n";
		$out .= "Host: $host\r\n";
		if($this->cookie) $out .= "Cookie: $this->cookie\r\n";
		if($this->method == 'POST')
		{
			$out .= $this->ContentType;
			$out .= "Content-Length: ".strlen($this->post)."\r\n";
			$out .= "Cache-Control: no-cache\r\n";
			$out .= "Connection: Close\r\n\r\n";
			$out .= $this->post;
		}
		else
		{
			$out .= "Connection: Close\r\n\r\n";
		}
		if($timeout > ini_get('max_execution_time')) @set_time_limit($timeout);
		$fp = @fsockopen($host, $port, $errno, $errstr, $timeout);
		if(!$fp)
		{
			$this->errno = $errno;
			$this->errstr = $errstr;
			return false;
		}
		else
		{
			stream_set_blocking($fp, $block);
			stream_set_timeout($fp, $timeout);
			fwrite($fp, $out);
			$this->data = '';
			$status = stream_get_meta_data($fp);
			if(!$status['timed_out'])
			{
				$maxsize = min($limit, 1024000);
				if($maxsize == 0) $maxsize = 1024000;
				$start = false;
				while(!feof($fp))
				{
					if($start)
					{
						$line = fread($fp, $maxsize);
						if(strlen($this->data) > $maxsize) break;
						$this->data .= $line;
					}
					else
					{
						$line = fgets($fp);
						$this->header .= $line;
						if($line == "\r\n" || $line == "\n") $start = true;
					}
				}
			}
			fclose($fp);
			return $this->is_ok();
		}
	}

    function save($file)
    {
		dir_create(dirname($file));
		return file_put_contents($file, $this->data);
    }

	function set_cookie($name, $value)
	{
		$this->cookie .= "$name=$value;";
	}

	function get_cookie()
	{
		$cookies = array();
		if(preg_match_all("|Set-Cookie: ([^;]*);|", $this->header, $m))
		{
			foreach($m[1] as $c)
			{
				list($k, $v) = explode('=', $c);
				$cookies[$k] = $v;
			}
		}
        return $cookies;
	}

	function get_data()
	{
		return $this->data;
	}

	function get_header()
	{
		return $this->header;
	}

	function get_status()
	{
		preg_match("|^HTTP/1.1 ([0-9]{3}) (.*)|", $this->header, $m);
		return array($m[1], $m[2]);
	}

	function get_mime($file)
	{
		$ext = fileext($file);
		if($ext == '') return '';
		$mime_types = cache_read('mime.inc.php', PHPCMS_ROOT.'include/');
		return isset($mime_types[$ext]) ? $mime_types[$ext] : '';
	}

	function is_ok()
	{
		$status = $this->get_status();
		if(intval($status[0]) != 200)
		{
			$this->errno = $status[0];
			$this->errstr = $status[1];
			return false;
		}
		return true;
	}

	function errno()
	{
		return $this->errno;
	}

	function errmsg()
	{
		return $this->errstr;
	}
}
?>