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<?php
// +----------------------------------------------------------------------
// | <--$framwork--> http.class.php http请求类
// +----------------------------------------------------------------------
// | Copyright (c) <--$company--> All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( <--$license--> )
// +----------------------------------------------------------------------
// | Author: <--$author--> <<--$mail-->>
// +----------------------------------------------------------------------

defined('IN_CORE') or die('No permission resources.');
class http {
    private $_url = '';
    private $_method = 'GET';
    private $_referer = '';
    private $_limit = 0;
    private $_timeout = 30;
    private $_block = true;
    private $_param = '';
    
    private $_data = '';
    private $_header = '';
    private $_errno = 0;
    private $_errmsg = '';
    private $_cookie = '';
    
    public function get() {
        $this->_method = 'GET';
        $this->url .= (strpos($this->url, '?') !== false ? '&' : '?').$this->_param; 
        return $this->request();
    }
    
    private function request() {
        $matches = parse_url($this->_url);
        $host = $matches['host'];
        $path = $matches['path'] ? $matches['path'].($matches['query'] ? '?'.$matches['query'] : '') : '/';
        $port = $matches['port'] ? $matches['port'] : 80;
        $out = "{$this->_method} {$path} HTTP/1.1\r\n";
        $out .= "Accept: */*\r\n";
        $out .= "Referer: {$this->_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 .= "Content-Type: application/x-www-form-urlencoded\r\n";
            $out .= "Content-Length: ".strlen($this->param)."\r\n";
            $out .= "Cache-Control: no-cache\r\n";
            $out .= "Connection: Close\r\n\r\n";
            $out .= $this->param;
        } else {
            $out .= "Connection: Close\r\n\r\n";
        }
        $fp = fsockopen($host, $port, $errno, $errmsg, $this->_timeout);
        if ( ! $fp) {
            $this->_errno = $errno;
            $this->_errmsg = $errmsg;
            return false;
        } else {
            stream_set_blocking($fp, $this->_block);
            stream_set_timeout($fp, $this->_timeout);
            fwrite($fp, $out);
            $this->_data = '';
            $status = stream_get_meta_data($fp);
            if ( ! $status['timed_out']) {
                $maxsize = min($this->_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();
        }
    }
    
    public function get_status() {
        preg_match("|^HTTP/1.1 ([0-9]{3}) (.*)|", $this->_header, $m);
        return array($m[1], $m[2]);
    }
    
    public function is_ok() {
        $status = $this->get_status();
        if (intval($status[0]) != 200) {
            $this->_errno = $status[0];
            $this->_errmsg = $status[1];
            return false;
        }
        return true;
    }
    
    public function get_data() {
        if (strpos($this->_header, 'chunk')) {
            $data = explode(chr(13), $this->_data);
            return $data[1];
        } else {
            return $this->_data;
        }
    }
    
    public function get_err() {
        return array(
            'message' => $this->_errmsg,
            'status' => $this->_errno
        );
    }
    
    public function __call($_method, $ags) {
        switch ($_method) {
            case 'url': 
            case 'method': 
            case 'referer':
            case 'limit':
            case 'timeout':
            case 'block':
                $var = '_'.$_method;
                $this->$var = $ags[0];
            break;
            case 'param' :
                $_c = array();
                if ($ags[0] && is_array($ags[0])) {
                    $_c = $ags[0];
                } else if ($ags[0]) {
                    $_c[$ags[0]] = (string)$ags[1];
                }
                $post = array();
                foreach($_c as $k=>$v) {
                    $post[] = $k.'='.rawurlencode($v);
                }
                $this->param = implode('&', $post);
            break;
            case 'cookie':
                $_c = array();
                if ($ags[0] && is_array($ags[0])) {
                    $_c = $ags[0];
                } else if ($ags[0] && $ags[1]) {
                    $_c[$ags[0]] = $ags[1];
                }
                foreach ($_c as $name=>$val) {
                    $this->_cookie .= "$name=$value;";
                }
            break;
            default :
                return false;
            break;
        }
        return $this;
    }

}
?>