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@JoyChou93 JoyChou93/Curl.php
Last active Oct 12, 2017

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修复Typecho SSRF的Curl.php代码 代码路径var/Typecho/Http/Client/Adapter/Curl.php
<?php
if (!defined('__TYPECHO_ROOT_DIR__')) exit;
/**
* CURL适配器
*
* @author qining
* @category typecho
* @package Http
* @copyright Copyright (c) 2008 Typecho team (http://www.typecho.org)
* @license GNU General Public License 2.0
* @version $Id$
*/
/**
* CURL适配器
*
* @author qining
* @category typecho
* @package Http
*/
class Typecho_Http_Client_Adapter_Curl extends Typecho_Http_Client_Adapter
{
/**
* 判断适配器是否可用
*
* @access public
* @return boolean
*/
public static function isAvailable()
{
return function_exists('curl_version');
}
/**
* 判断请求的URL是否是内网IP
* @author JoyChou
* @param string $url 请求地址
* @return bool
*/
public function isInnerIP($url)
{
// 限制为HTTP/HTTPS协议,防止其他协议攻击
$params = parse_url($url);
if ($params['scheme'] != 'http' && $params['scheme'] != 'https'){
return True;
}
$host = $params['host'];
$ip = gethostbyname($host);
// IP转换整数型
$longIP = ip2long($ip);
/*
内网IP:
10.0.0.1 - 10.255.255.254 (10.0.0.0/8)
192.168.0.1 - 192.168.255.254 (192.168.0.0/16)
127.0.0.1 - 127.255.255.254 (127.0.0.0/8)
172.16.0.1 - 172.31.255.254 (172.16.0.0/12)
*/
return ip2long('127.0.0.0')>>24 == $longIP>>24 ||
ip2long('10.0.0.0')>>24 == $longIP>>24 ||
ip2long('172.16.0.0')>>20 == $longIP>>20 ||
ip2long('192.168.0.0')>>16 == $longIP>>16;
}
/**
* 发送请求
*
* @access public
* @param string $url 请求地址
* @return string
*/
public function httpSend($url)
{
if ($this->isInnerIP($url)) {
throw new Typecho_Http_Client_Exception('Scheme is not https/http or IP is inner ip', 500);
}
$ch = curl_init();
if ($this->ip) {
$url = $this->scheme . '://' . $this->ip . $this->path;
$this->headers['Rfc'] = $this->method . ' ' . $this->path . ' ' . $this->rfc;
$this->headers['Host'] = $this->host;
}
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_PORT, $this->port);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FRESH_CONNECT, true);
curl_setopt($ch, CURLOPT_TIMEOUT, $this->timeout);
curl_setopt($ch, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
/** 设置HTTP版本 */
switch ($this->rfc) {
case 'HTTP/1.0':
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
break;
case 'HTTP/1.1':
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
break;
default:
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_NONE);
break;
}
/** 设置header信息 */
if (!empty($this->headers)) {
if (isset($this->headers['User-Agent'])) {
curl_setopt($ch, CURLOPT_USERAGENT, $this->headers['User-Agent']);
unset($this->headers['User-Agent']);
}
$headers = array();
if (isset($this->headers['Rfc'])) {
$headers[] = $this->headers['Rfc'];
unset($this->headers['Rfc']);
}
foreach ($this->headers as $key => $val) {
$headers[] = $key . ': ' . $val;
}
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
}
/** POST模式 */
if (Typecho_Http_Client::METHOD_POST == $this->method) {
if (!isset($this->headers['content-type'])) {
curl_setopt($ch, CURLOPT_POST, true);
}
if (!empty($this->data)) {
curl_setopt($ch, CURLOPT_POSTFIELDS, is_array($this->data) ? http_build_query($this->data) : $this->data);
}
if (!empty($this->files)) {
foreach ($this->files as $key => &$file) {
$file = '@' . $file;
}
curl_setopt($ch, CURLOPT_POSTFIELDS, $this->files);
}
}
$response = curl_exec($ch);
if (false === $response) {
throw new Typecho_Http_Client_Exception(curl_error($ch), 500);
}
curl_close($ch);
return $response;
}
}
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