phpwind,discuz虚拟主机禁止 fsockopen pfsockopen函数的解决办法

[ 2012-06-17 11:12:56 | 作者: admin ]
字号: | |
现在虚拟主机的限制都比较多,很多一批都禁止了fsockopen pfsockopen file_get_contents,部分主机可以用 stream_socket_client 代替。

一、如何禁用fsockopen()
下面是两种常用的禁用fsockopen的方法。
1、修改php.ini,将 disable_functions = 后加入 fsockopen
2、修改php.ini,将 allow_url_fopen = On 改为 allow_url_fopen = Off


二、如何解决fsockopen函数被禁用

下面举个例子:

$fp = fsockopen($host, 80, $errno, $errstr, 30);

修改后
 
$fp = stream_socket_client($host.":"."80", $errno, $errstr, 30);









通过修改ThinkPHP的类,可以得到一个通用简单的替代类

调用方法:
                     $api_url = 'http://blog.xg98.com/';
                     $source = Http::fsockopenDownload($api_url);

Http类
<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2009 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
// $Id: Http.class.php 2504 2011-12-28 07:35:29Z liu21st $

/**
   +------------------------------------------------------------------------------
   * Http 工具类
   * 提供一系列的Http方法
   +------------------------------------------------------------------------------
   * @category ORG
   * @package ORG
   * @subpackage Net
   * @author liu21st <liu21st@gmail.com>
   * @version $Id: Http.class.php 2504 2011-12-28 07:35:29Z liu21st $
   +------------------------------------------------------------------------------
   */
class Http {

  /**
   +----------------------------------------------------------
   * 采集远程文件
   +----------------------------------------------------------
   * @access public
   +----------------------------------------------------------
   * @param string $remote 远程文件名
   * @param string $local 本地保存文件名
   +----------------------------------------------------------
   * @return mixed
   +----------------------------------------------------------
   */
  static public function curlDownload($remote,$local) {
    $cp = curl_init($remote);
    $fp = fopen($local,"w");
    curl_setopt($cp, CURLOPT_FILE, $fp);
    curl_setopt($cp, CURLOPT_HEADER, 0);
    curl_exec($cp);
    curl_close($cp);
    fclose($fp);
  }

  /**
   +-----------------------------------------------------------
   * 使用 fsockopen 通过 HTTP 协议直接访问(采集)远程文件
   * 如果主机或服务器没有开启 CURL 扩展可考虑使用
   * fsockopen 比 CURL 稍慢,但性能稳定
   +-----------------------------------------------------------
   * @static
   * @access public
   +-----------------------------------------------------------
   * @param string $url 远程URL
   * @param array $conf 其他配置信息
   * int limit 分段读取字符个数
   * string post post的内容,字符串或数组,key=value&形式
   * string cookie 携带cookie访问,该参数是cookie内容
   * string ip 如果该参数传入,$url将不被使用,ip访问优先
   * int timeout 采集超时时间
   * bool block 是否阻塞访问,默认为true
   +-----------------------------------------------------------
   * @return mixed
   +-----------------------------------------------------------
   */
  static public function fsockopenDownload($url, $conf = array()) {
    $return = '';
    if(!is_array($conf)) return $return;

    $matches = parse_url($url);
    !isset($matches['host']) && $matches['host'] = '';
    !isset($matches['path']) && $matches['path'] = '';
    !isset($matches['query']) && $matches['query'] = '';
    !isset($matches['port']) && $matches['port'] = '';
    $host = $matches['host'];
    $path = $matches['path'] ? $matches['path'].($matches['query'] ? '?'.$matches['query'] : '') : '/';
    $port = !empty($matches['port']) ? $matches['port'] : 80;

    $conf_arr = array(
                     'limit'=>0,
                     'post'=>'',
                     'cookie'=>'',
                     'ip'=>'',
                     'timeout'=>15,
                     'block'=>TRUE,
    );

    foreach (array_merge($conf_arr, $conf) as $k=>$v) ${$k} = $v;

    if($post) {
      if(is_array($post))
      {
        $post = http_build_query($post);
      }
      $out = "POST $path HTTP/1.0\r\n";
      $out .= "Accept: */*\r\n";
      //$out .= "Referer: $boardurl\r\n";
      $out .= "Accept-Language: zh-cn\r\n";
      $out .= "Content-Type: application/x-www-form-urlencoded\r\n";
      $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";
      $out .= "Host: $host\r\n";
      $out .= 'Content-Length: '.strlen($post)."\r\n";
      $out .= "Connection: Close\r\n";
      $out .= "Cache-Control: no-cache\r\n";
      $out .= "Cookie: $cookie\r\n\r\n";
      $out .= $post;
    } else {
      $out = "GET $path HTTP/1.0\r\n";
      $out .= "Accept: */*\r\n";
      //$out .= "Referer: $boardurl\r\n";
      $out .= "Accept-Language: zh-cn\r\n";
      $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";
      $out .= "Host: $host\r\n";
      $out .= "Connection: Close\r\n";
      $out .= "Cookie: $cookie\r\n\r\n";
    }
    $fp = @stream_socket_client(($ip ? $ip : $host).":". $port, $errno, $errstr, $timeout);
    if(!$fp) {
      return '';
    } else {
      stream_set_blocking($fp, $block);
      stream_set_timeout($fp, $timeout);
      @fwrite($fp, $out);
      $status = stream_get_meta_data($fp);
      if(!$status['timed_out']) {
        while (!feof($fp)) {
          if(($header = @fgets($fp)) && ($header == "\r\n" || $header == "\n")) {
            break;
          }
        }

        $stop = false;
        while(!feof($fp) && !$stop) {
          $data = fread($fp, ($limit == 0 || $limit > 8192 ? 8192 : $limit));
          $return .= $data;
          if($limit) {
            $limit -= strlen($data);
            $stop = $limit <= 0;
          }
        }
      }
      @fclose($fp);
      return $return;
    }
  }

  /**
   +----------------------------------------------------------
   * 下载文件
   * 可以指定下载显示的文件名,并自动发送相应的Header信息
   * 如果指定了content参数,则下载该参数的内容
   +----------------------------------------------------------
   * @static
   * @access public
   +----------------------------------------------------------
   * @param string $filename 下载文件名
   * @param string $showname 下载显示的文件名
   * @param string $content 下载的内容
   * @param integer $expire 下载内容浏览器缓存时间
   +----------------------------------------------------------
   * @return void
   +----------------------------------------------------------
   * @throws ThinkExecption
   +----------------------------------------------------------
   */
  static public function download ($filename, $showname='',$content='',$expire=180) {
    if(is_file($filename)) {
      $length = filesize($filename);
    }elseif(is_file(UPLOAD_PATH.$filename)) {
      $filename = UPLOAD_PATH.$filename;
      $length = filesize($filename);
    }elseif($content != '') {
      $length = strlen($content);
    }else {
      throw_exception($filename.L('下载文件不存在!'));
    }
    if(empty($showname)) {
      $showname = $filename;
    }
    $showname = basename($showname);
    if(!empty($filename)) {
      $type = mime_content_type($filename);
    }else{
      $type   =   "application/octet-stream";
    }
    //发送Http Header信息 开始下载
    header("Pragma: public");
    header("Cache-control: max-age=".$expire);
    //header('Cache-Control: no-store, no-cache, must-revalidate');
    header("Expires: " . gmdate("D, d M Y H:i:s",time()+$expire) . "GMT");
    header("Last-Modified: " . gmdate("D, d M Y H:i:s",time()) . "GMT");
    header("Content-Disposition: attachment; filename=".$showname);
    header("Content-Length: ".$length);
    header("Content-type: ".$type);
    header('Content-Encoding: none');
    header("Content-Transfer-Encoding: binary" );
    if($content == '' ) {
      readfile($filename);
    }else {
      echo($content);
    }
    exit();
  }

  /**
   +----------------------------------------------------------
   * 显示HTTP Header 信息
   +----------------------------------------------------------
   * @return string
   +----------------------------------------------------------
   */
  static function getHeaderInfo($header='',$echo=true) {
    ob_start();
    $headers = getallheaders();
    if(!empty($header)) {
      $info = $headers[$header];
      echo($header.':'.$info."\n"); ;
    }else {
      foreach($headers as $key=>$val) {
        echo("$key:$val\n");
      }
    }
    $output = ob_get_clean();
    if ($echo) {
      echo (nl2br($output));
    }else {
      return $output;
    }

  }

  /**
   * HTTP Protocol defined status codes
   * @param int $num
   */
  static function sendHttpStatus($code) {
    static $_status = array(
    // Informational 1xx
    100 => 'Continue',
    101 => 'Switching Protocols',

    // Success 2xx
    200 => 'OK',
    201 => 'Created',
    202 => 'Accepted',
    203 => 'Non-Authoritative Information',
    204 => 'No Content',
    205 => 'Reset Content',
    206 => 'Partial Content',

    // Redirection 3xx
    300 => 'Multiple Choices',
    301 => 'Moved Permanently',
    302 => 'Found', // 1.1
    303 => 'See Other',
    304 => 'Not Modified',
    305 => 'Use Proxy',
    // 306 is deprecated but reserved
    307 => 'Temporary Redirect',

    // Client Error 4xx
    400 => 'Bad Request',
    401 => 'Unauthorized',
    402 => 'Payment Required',
    403 => 'Forbidden',
    404 => 'Not Found',
    405 => 'Method Not Allowed',
    406 => 'Not Acceptable',
    407 => 'Proxy Authentication Required',
    408 => 'Request Timeout',
    409 => 'Conflict',
    410 => 'Gone',
    411 => 'Length Required',
    412 => 'Precondition Failed',
    413 => 'Request Entity Too Large',
    414 => 'Request-URI Too Long',
    415 => 'Unsupported Media Type',
    416 => 'Requested Range Not Satisfiable',
    417 => 'Expectation Failed',

    // Server Error 5xx
    500 => 'Internal Server Error',
    501 => 'Not Implemented',
    502 => 'Bad Gateway',
    503 => 'Service Unavailable',
    504 => 'Gateway Timeout',
    505 => 'HTTP Version Not Supported',
    509 => 'Bandwidth Limit Exceeded'
    );
    if(isset($_status[$code])) {
      header('HTTP/1.1 '.$code.' '.$_status[$code]);
    }
  }
}//类定义结束
if( !function_exists ('mime_content_type')) {
  /**
   +----------------------------------------------------------
   * 获取文件的mime_content类型
   +----------------------------------------------------------
   * @return string
   +----------------------------------------------------------
   */
  function mime_content_type($filename) {
    static $contentType = array(
      'ai'  => 'application/postscript',
        'aif'  => 'audio/x-aiff',
        'aifc'  => 'audio/x-aiff',
        'aiff'  => 'audio/x-aiff',
        'asc'  => 'application/pgp', //changed by skwashd - was text/plain
        'asf'  => 'video/x-ms-asf',
        'asx'  => 'video/x-ms-asf',
        'au'  => 'audio/basic',
        'avi'  => 'video/x-msvideo',
        'bcpio'  => 'application/x-bcpio',
        'bin'  => 'application/octet-stream',
        'bmp'  => 'image/bmp',
        'c'  => 'text/plain', // or 'text/x-csrc', //added by skwashd
        'cc'  => 'text/plain', // or 'text/x-c++src', //added by skwashd
        'cs'  => 'text/plain', //added by skwashd - for C# src
        'cpp'  => 'text/x-c++src', //added by skwashd
        'cxx'  => 'text/x-c++src', //added by skwashd
        'cdf'  => 'application/x-netcdf',
        'class'  => 'application/octet-stream',//secure but application/java-class is correct
        'com'  => 'application/octet-stream',//added by skwashd
        'cpio'  => 'application/x-cpio',
        'cpt'  => 'application/mac-compactpro',
        'csh'  => 'application/x-csh',
        'css'  => 'text/css',
        'csv'  => 'text/comma-separated-values',//added by skwashd
        'dcr'  => 'application/x-director',
        'diff'  => 'text/diff',
        'dir'  => 'application/x-director',
        'dll'  => 'application/octet-stream',
        'dms'  => 'application/octet-stream',
        'doc'  => 'application/msword',
        'dot'  => 'application/msword',//added by skwashd
        'dvi'  => 'application/x-dvi',
        'dxr'  => 'application/x-director',
        'eps'  => 'application/postscript',
        'etx'  => 'text/x-setext',
        'exe'  => 'application/octet-stream',
        'ez'  => 'application/andrew-inset',
        'gif'  => 'image/gif',
        'gtar'  => 'application/x-gtar',
        'gz'  => 'application/x-gzip',
        'h'  => 'text/plain', // or 'text/x-chdr',//added by skwashd
        'h++'  => 'text/plain', // or 'text/x-c++hdr', //added by skwashd
        'hh'  => 'text/plain', // or 'text/x-c++hdr', //added by skwashd
        'hpp'  => 'text/plain', // or 'text/x-c++hdr', //added by skwashd
        'hxx'  => 'text/plain', // or 'text/x-c++hdr', //added by skwashd
        'hdf'  => 'application/x-hdf',
        'hqx'  => 'application/mac-binhex40',
        'htm'  => 'text/html',
        'html'  => 'text/html',
        'ice'  => 'x-conference/x-cooltalk',
        'ics'  => 'text/calendar',
        'ief'  => 'image/ief',
        'ifb'  => 'text/calendar',
        'iges'  => 'model/iges',
        'igs'  => 'model/iges',
        'jar'  => 'application/x-jar', //added by skwashd - alternative mime type
        'java'  => 'text/x-java-source', //added by skwashd
        'jpe'  => 'image/jpeg',
        'jpeg'  => 'image/jpeg',
        'jpg'  => 'image/jpeg',
        'js'  => 'application/x-javascript',
        'kar'  => 'audio/midi',
        'latex'  => 'application/x-latex',
        'lha'  => 'application/octet-stream',
        'log'  => 'text/plain',
        'lzh'  => 'application/octet-stream',
        'm3u'  => 'audio/x-mpegurl',
        'man'  => 'application/x-troff-man',
        'me'  => 'application/x-troff-me',
        'mesh'  => 'model/mesh',
        'mid'  => 'audio/midi',
        'midi'  => 'audio/midi',
        'mif'  => 'application/vnd.mif',
        'mov'  => 'video/quicktime',
        'movie'  => 'video/x-sgi-movie',
        'mp2'  => 'audio/mpeg',
        'mp3'  => 'audio/mpeg',
        'mpe'  => 'video/mpeg',
        'mpeg'  => 'video/mpeg',
        'mpg'  => 'video/mpeg',
        'mpga'  => 'audio/mpeg',
        'ms'  => 'application/x-troff-ms',
        'msh'  => 'model/mesh',
        'mxu'  => 'video/vnd.mpegurl',
        'nc'  => 'application/x-netcdf',
        'oda'  => 'application/oda',
        'patch'  => 'text/diff',
        'pbm'  => 'image/x-portable-bitmap',
        'pdb'  => 'chemical/x-pdb',
        'pdf'  => 'application/pdf',
        'pgm'  => 'image/x-portable-graymap',
        'pgn'  => 'application/x-chess-pgn',
        'pgp'  => 'application/pgp',//added by skwashd
        'php'  => 'application/x-httpd-php',
        'php3'  => 'application/x-httpd-php3',
        'pl'  => 'application/x-perl',
        'pm'  => 'application/x-perl',
        'png'  => 'image/png',
        'pnm'  => 'image/x-portable-anymap',
        'po'  => 'text/plain',
        'ppm'  => 'image/x-portable-pixmap',
        'ppt'  => 'application/vnd.ms-powerpoint',
        'ps'  => 'application/postscript',
        'qt'  => 'video/quicktime',
        'ra'  => 'audio/x-realaudio',
        'rar'=>'application/octet-stream',
        'ram'  => 'audio/x-pn-realaudio',
        'ras'  => 'image/x-cmu-raster',
        'rgb'  => 'image/x-rgb',
        'rm'  => 'audio/x-pn-realaudio',
        'roff'  => 'application/x-troff',
        'rpm'  => 'audio/x-pn-realaudio-plugin',
        'rtf'  => 'text/rtf',
        'rtx'  => 'text/richtext',
        'sgm'  => 'text/sgml',
        'sgml'  => 'text/sgml',
        'sh'  => 'application/x-sh',
        'shar'  => 'application/x-shar',
        'shtml'  => 'text/html',
        'silo'  => 'model/mesh',
        'sit'  => 'application/x-stuffit',
        'skd'  => 'application/x-koan',
        'skm'  => 'application/x-koan',
        'skp'  => 'application/x-koan',
        'skt'  => 'application/x-koan',
        'smi'  => 'application/smil',
        'smil'  => 'application/smil',
        'snd'  => 'audio/basic',
        'so'  => 'application/octet-stream',
        'spl'  => 'application/x-futuresplash',
        'src'  => 'application/x-wais-source',
        'stc'  => 'application/vnd.sun.xml.calc.template',
        'std'  => 'application/vnd.sun.xml.draw.template',
        'sti'  => 'application/vnd.sun.xml.impress.template',
        'stw'  => 'application/vnd.sun.xml.writer.template',
        'sv4cpio'  => 'application/x-sv4cpio',
        'sv4crc'  => 'application/x-sv4crc',
        'swf'  => 'application/x-shockwave-flash',
        'sxc'  => 'application/vnd.sun.xml.calc',
        'sxd'  => 'application/vnd.sun.xml.draw',
        'sxg'  => 'application/vnd.sun.xml.writer.global',
        'sxi'  => 'application/vnd.sun.xml.impress',
        'sxm'  => 'application/vnd.sun.xml.math',
        'sxw'  => 'application/vnd.sun.xml.writer',
        't'  => 'application/x-troff',
        'tar'  => 'application/x-tar',
        'tcl'  => 'application/x-tcl',
        'tex'  => 'application/x-tex',
        'texi'  => 'application/x-texinfo',
        'texinfo'  => 'application/x-texinfo',
        'tgz'  => 'application/x-gtar',
        'tif'  => 'image/tiff',
        'tiff'  => 'image/tiff',
        'tr'  => 'application/x-troff',
        'tsv'  => 'text/tab-separated-values',
        'txt'  => 'text/plain',
        'ustar'  => 'application/x-ustar',
        'vbs'  => 'text/plain', //added by skwashd - for obvious reasons
        'vcd'  => 'application/x-cdlink',
        'vcf'  => 'text/x-vcard',
        'vcs'  => 'text/calendar',
        'vfb'  => 'text/calendar',
        'vrml'  => 'model/vrml',
        'vsd'  => 'application/vnd.visio',
        'wav'  => 'audio/x-wav',
        'wax'  => 'audio/x-ms-wax',
        'wbmp'  => 'image/vnd.wap.wbmp',
        'wbxml'  => 'application/vnd.wap.wbxml',
        'wm'  => 'video/x-ms-wm',
        'wma'  => 'audio/x-ms-wma',
        'wmd'  => 'application/x-ms-wmd',
        'wml'  => 'text/vnd.wap.wml',
        'wmlc'  => 'application/vnd.wap.wmlc',
        'wmls'  => 'text/vnd.wap.wmlscript',
        'wmlsc'  => 'application/vnd.wap.wmlscriptc',
        'wmv'  => 'video/x-ms-wmv',
        'wmx'  => 'video/x-ms-wmx',
        'wmz'  => 'application/x-ms-wmz',
        'wrl'  => 'model/vrml',
        'wvx'  => 'video/x-ms-wvx',
        'xbm'  => 'image/x-xbitmap',
        'xht'  => 'application/xhtml+xml',
        'xhtml'  => 'application/xhtml+xml',
        'xls'  => 'application/vnd.ms-excel',
        'xlt'  => 'application/vnd.ms-excel',
        'xml'  => 'application/xml',
        'xpm'  => 'image/x-xpixmap',
        'xsl'  => 'text/xml',
        'xwd'  => 'image/x-xwindowdump',
        'xyz'  => 'chemical/x-xyz',
        'z'  => 'application/x-compress',
        'zip'  => 'application/zip',
    );
    $type = strtolower(substr(strrchr($filename, '.'),1));
    if(isset($contentType[$type])) {
      $mime = $contentType[$type];
    }else {
      $mime = 'application/octet-stream';
    }
    return $mime;
  }
}

if(!function_exists('image_type_to_extension')){
  function image_type_to_extension($imagetype) {
    if(empty($imagetype)) return false;
    switch($imagetype) {
      case IMAGETYPE_GIF : return '.gif';
      case IMAGETYPE_JPEG : return '.jpg';
      case IMAGETYPE_PNG : return '.png';
      case IMAGETYPE_SWF : return '.swf';
      case IMAGETYPE_PSD : return '.psd';
      case IMAGETYPE_BMP : return '.bmp';
      case IMAGETYPE_TIFF_II : return '.tiff';
      case IMAGETYPE_TIFF_MM : return '.tiff';
      case IMAGETYPE_JPC : return '.jpc';
      case IMAGETYPE_JP2 : return '.jp2';
      case IMAGETYPE_JPX : return '.jpf';
      case IMAGETYPE_JB2 : return '.jb2';
      case IMAGETYPE_SWC : return '.swc';
      case IMAGETYPE_IFF : return '.aiff';
      case IMAGETYPE_WBMP : return '.wbmp';
      case IMAGETYPE_XBM : return '.xbm';
      default : return false;
    }
  }

}
[最后修改由 admin, 于 2013-01-28 14:09:29]
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