暗月梦魂 's Home

curl 是使用URL语法的传送文件工具，支持FTP、FTPS、HTTP HTPPS SCP SFTP TFTP TELNET DICT FILE和LDAP。curl 支持SSL证书、HTTP POST、HTTP PUT 、FTP 上传，kerberos、基于HTT格式的上传、代理、cookie、用户＋口令证明、文件传送恢复、http代理通道和大量其他有用的技巧。详见参考手册

阅读全文 ……

curl虽然功能强大，但是只能伪造$_SERVER[“HTTP_X_FORWARDED_FOR”]，对于大多数IP地址检测程序来说，$_SERVER[“REMOTE_ADDR”]很难被伪造：

首先是client.php的代码

$headers['CLIENT-IP'] = '202.103.229.40';  
$headers['X-FORWARDED-FOR'] = '202.103.229.40'; 

$headerArr = array();  
foreach( $headers as $n => $v ) {  
    $headerArr[] = $n .':' . $v;   
}

ob_start();
$ch = curl_init();
curl_setopt ($ch, CURLOPT_URL, "http://localhost/curl/server.php");
curl_setopt ($ch, CURLOPT_HTTPHEADER , $headerArr );  //构造IP
curl_setopt ($ch, CURLOPT_REFERER, "http://www.163.com/ ");   //构造来路
curl_setopt( $ch, CURLOPT_HEADER, 1);

curl_exec($ch);
curl_close ($ch);
$out = ob_get_contents();
ob_clean();

echo $out;

然后是server.php

function GetIP(){
    if(!emptyempty($_SERVER["HTTP_CLIENT_IP"]))
        $cip = $_SERVER["HTTP_CLIENT_IP"];
    else if(!emptyempty($_SERVER["HTTP_X_FORWARDED_FOR"]))
        $cip = $_SERVER["HTTP_X_FORWARDED_FOR"];
    else if(!emptyempty($_SERVER["REMOTE_ADDR"]))
        $cip = $_SERVER["REMOTE_ADDR"];
    else
    $cip = "无法获取！";
    return $cip;
}
echo "<br>访问IP: ".GetIP()."<br>";
echo "<br>访问来路: ".$_SERVER["HTTP_REFERER"];