合租服务器禁用 fsockopen 函数，部分程序不正常的解决办法。-优快云博客

本文详细介绍了如何通过禁用并替换fsockopen函数来应对PHPDDOS攻击，提供了已知使用fsockopen的程序文件路径及通用解决方法，并列举了多个具体案例，如DiscuzX2、X2、DEDECMS等，帮助开发者快速定位并解决问题。

近期黑客利用程序漏洞注入后使用 fsockopen 进行PHPDDOS 攻击，导致部分服务器不稳定，现在将危险函数 fsockopen 暂时禁用，部分程序功能可能有问题，以下列出已知问题及通用解决方法：

通用解决方法：
找到程序里的 fsockopen 函数，替换为：pfsockopen，即可解决所有问题，两个函数的区别在于 pfsockopen 保持 keep-alive，使得黑客无法进行连接数攻击。

已知使用 fsockopen 函数的程序文件路径（在fsockopen 前加 p, 即fsockopen 修改为 pfsockopen 即可）[其他程序可通过错误提示的文件路径查看更改]：

Discuz X2 安装提示不支持fsockopen：
将 /include/install_var.php 文件里的
$func_items = array(‘mysql_connect’, ‘fsockopen ‘, ‘gethostbyname’, ‘file_get_contents’, ‘xml_parser_create’);
替换为：
$func_items = array(‘mysql_connect’, ‘pfsockopen ‘, ‘gethostbyname’, ‘file_get_contents’, ‘xml_parser_create’);
即可正常安装。
X2全部包含fsockopen的文件（如果用邮件只修改邮件即可，其他文件都是自动判断 pfsockopen）：

\api\manyou\Manyou.php
\api\trade\api_alipay.php
\install\include\install_function.php
\install\include\install_lang.php
\install\include\install_var.php
\source\admincp\admincp_addons.php
\source\admincp\admincp_checktools.php
\source\admincp\admincp_cloud.php
\source\admincp\admincp_misc.php
\source\admincp\cloud\cloud_doctor.php
\source\class\class_image.php
\source\class\class_sphinx.php
\source\class\block\xml\block_xml.php
\source\function\function_connect.php
\source\function\function_core.php
\source\function\function_filesock.php
\source\function\function_importdata.php
\source\function\function_mail.php      邮件相关
\source\function\function_plugin.php
\source\include\portalcp\portalcp_upload.php
\source\language\lang_admincp_cloud.php
\source\module\forum\forum_ajax.php
\source\module\misc\misc_manyou.php
\uc_client\client.php
\uc_client\lib\sendmail.inc.php         邮件相关
\uc_client\model\misc.php
\uc_server\install\func.inc.php
\uc_server\install\lang.inc.php
\uc_server\lib\sendmail.inc.php         邮件相关
\uc_server\model\misc.php

Discuz 品牌空间不能安装，提示UC地址不正确：
修改 /install/func.inc.php 里的 fsockopen函数为 pfsockopen

Discuz 7.2：(非首次安装，可以只改绿色部分。)
问题：使用 uc 不能登录， fsockopen 函数位于：

include\global.func.php(240): $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);


include\sendmail.inc.php(54):  if(!$fp = fsockopen($mail['server'], $mail['port'], $errno, $errstr, 30)) {
install\func.inc.php(803):  $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);
install\var.inc.php(70): $func_items = array('mysql_connect', 'fsockopen', 'gethostbyname', 'file_get_contents', 'xml_parser_create');
uc_client\client.php(211): $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);


uc_client\lib\sendmail.inc.php(40):  if(!$fp = fsockopen($mail_setting['mailserver'], $mail_setting['mailport'], $errno, $errstr, 30)) {
uc_client\model\misc.php(97): $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);


uc_server\lib\sendmail.inc.php(40):  if(!$fp = fsockopen($mail_setting['mailserver'], $mail_setting['mailport'], $errno, $errstr, 30)) {
uc_server\model\misc.php(94): $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);

DEDECMS 问答积分功能出现 service.dedecms.com：
修改 /ask/data/scores.inc.php 里的 fsockopen 为 pfsockopen
附带dedecms 全部含 fsockopen 的文件列表：

./include/dedehttpdown.class.php:        $this->m_fp = @fsockopen($this->m_host,                                                      $this->m_port, $errno, $errstr,10);
./include/sphinxclient.class.php:                       $fp = @fsockopen ( $host                                                     , $port, $errno, $errstr );
./include/sphinxclient.class.php:                       $fp = @fsockopen ( $host                                                     , $port, $errno, $errstr, $this->_timeout );
./include/dedecollection.func.php:    $m_fp = fsockopen($ghost, 80, $errno, $err                                                     str,10);
./include/dedecollection.func.php:    $m_fp = fsockopen($ghost, 80, $errno, $err                                                     str,10) or die($ghost.'<br />');
./include/mail.class.php:        //is used in fsockopen()
./include/mail.class.php:        $this->sock = @fsockopen($this->relay_host, $th                                                     is->smtp_port, $errno, $errstr, $this->time_out);
./include/mail.class.php:            $this->sock = @fsockopen($host, $this->smtp                                                     _port, $errno, $errstr, $this->time_out);
./ask/data/scores.inc.php:    $fp = fsockopen($host,80,$errno,$errstr,30);
./dede/module_main.php:        $fp = fsockopen('www.dedecms.com',80,$errno,$errs                                                     tr,30);
./dede/api_ucenter.php: $fp = @fsockopen(($host ? $host : $ip), $port, $errno, $                                                     errstr, $timeout);
./dede/plus_bshare.php:    if (!$fp=@fsockopen($parse['host'],$parse['port'],$er                                                     rnum,$errstr,$timeout)) {
./plus/bshare.php:    if (!$fp=@fsockopen($parse['host'],$parse['port'],$errnum,                                                     $errstr,$timeout)) {

UC通信不正常，DEDE整合UC连接不上的解决办法：
修改：
uc_client/client.php
uc_client/model/misc.php
替换里面的 fsockopen 为 pfsockopen

SHOPEX:
./install/svinfo.php:                    $fp = @fsockopen(“unix://”.DB_HOST);
./install/svinfo.php:                    $fp = @fsockopen(“tcp://”.$host, $port, $errno, $errstr,2);
./install/svinfo.php:        $rst = is_callable(‘fsockopen’);
./install/svinfo.php:        $items['fsockopen支持'] = array(
./install/svinfo.php:            $fp = fsockopen(isset($_SERVER['SERVER_ADDR'])?$_SERVER['SERVER_ADDR']:$_SERVER['HTTP_HOST'], $_SERVER['SERVER_PORT'], $errno, $errstr, 2);
./plugins/payment/pay.paypal_cn.php:        $fp = fsockopen (‘www.paypal.com’, 80, $errno, $errstr, 30);
./plugins/payment/pay.paypal_cn.php:        $fp = fsockopen (‘ssl://www.paypal.com’, 443, $errno, $errstr, 30);
./plugins/payment/pay.nochek.php:        $fp = fsockopen (‘www.nochex.com’, 80, $errno, $errstr, 10);
./plugins/payment/pay.paypal.server.php:        $fp = fsockopen (‘www.paypal.com’, 80, $errno, $errstr, 30);
./plugins/payment/pay.paypal.php:        $fp = fsockopen (‘www.paypal.com’, 80, $errno, $errstr, 30);
./plugins/passport/passport.ucenter.php:            $fp=@fsockopen(($ip ? $ip : $host),$port,$errorno,$errorstr,$timeout);
./core/lib/nusoap.php:        $this->debug(‘calling fsockopen with host ‘ . $host . ‘ connection_timeout ‘ . $connection_timeout);
./core/lib/nusoap.php:            $this->fp = @fsockopen( $host, $this->port, $this->errno, $this->error_str, $connection_timeout);
./core/lib/nusoap.php:            $this->fp = @fsockopen( $host, $this->port, $this->errno, $this->error_str);
./core/lib/uc_client/client.php:    $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);
./core/func_ext.php:    $fp = pfsockopen($url['host'], isset($url['port'])?$url['port']:80, $errno, $errstr, 2);
./core/func_ext.php:    $fp = pfsockopen( $host, $port, $errno, $errstr, $timeout );
./core/api/include/api_utility.php:        $process = fsockopen($this->host, $this->port, $errno, $errstr, 10);
./core/api/include/api_utility.php:        $process = fsockopen($host, 80, $errno, $errstr, 10);
./core/api/tools/1.0/api_b2b_1_0_tools.php:    $fp = fsockopen( $host, $port, $errno, $errstr, $timeout );

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