如果你要使用fsockopen函数我们必须在php.ini中把allow_url_fopen = On 设置为开启状态。
例
fsockopen() Example
代码如下复制代码<?php $fp = fsockopen("www.example.com", 80, $errno, $errstr, 30); if (!$fp) { echo "$errstr ($errno)<br />n"; } else { $out = "GET / HTTP/1.1rn"; $out .= "Host: www.example.comrn"; $out .= "Connection: Closernrn"; fwrite($fp, $out); while (!feof($fp)) { echo fgets($fp, 128); } fclose($fp); } ?>
伪造post
POST HTTP请求(URL)并获取返回值
代码如下复制代码<?php
$srv_ip = '192.168.1.5';//你的目标服务地址.
$srv_port = 80;//端口
$url = 'http://localhost/fsock.php'; //接收你post的URL具体地址
$fp = '';
$errno = 0;//错误处理
$errstr = '';//错误处理
$timeout = 10;//多久没有连上就中断
$post_str = "username=demo&password=hahaha";//要提交的内容.
//打开网络的 Socket 链接。
$fp = fsockopen($srv_ip,$srv_port,$errno,$errstr,$timeout);
if (!$fp){
echo('fp fail');
}
$content_length = strlen($post_str);
$post_header = "POST $url HTTP/1.1rn";
$post_header .= "Content-Type: application/x-www-form-urlencodedrn";
$post_header .= "User-Agent: MSIErn";
$post_header .= "Host: ".$srv_ip."rn";
$post_header .= "Content-Length: ".$content_length."rn";
$post_header .= "Connection: closernrn";
$post_header .= $post_str."rnrn";
fwrite($fp,$post_header);
$inheader = 1;
while(!feof($fp)){//测试文件指针是否到了文件结束的位置
$line = fgets($fp,1024);
//去掉请求包的头信息
if ($inheader && ($line == "n" || $line == "rn")) {
$inheader = 0;
}
if ($inheader == 0) {
echo $line;
}
}
fclose($fp);
unset ($line);
?>
简要说明:代码第二行是你的IP地址或域名,第四行是你要POST的页面的具体地址,本例用的是fsock.php,fsock.php内容如下:
代码如下复制代码<?php
echo "username:".$_POST['username']."<br/>";
echo "password:".$_POST['password'];
?>
结果为:
username:demo
password:hahaha
伪造get
同时伪造post,get方法。
代码如下复制代码<?php //fsocket模拟post提交 $purl = "http://localhost/netphp/test2.php?uu=rrrrrrrrrrrr"; print_r(parse_url($url)); sock_post($purl,"uu=55555555555555555"); //fsocket模拟get提交 function sock_get($url, $query) { $info = parse_url($url); $fp = fsockopen($info["host"], 80, $errno, $errstr, 3); $head = "GET ".$info['path']."?".$info["query"]." HTTP/1.0rn"; $head .= "Host: ".$info['host']."rn"; $head .= "rn"; $write = fputs($fp, $head); while (!feof($fp)) { $line = fread($fp,4096); echo $line; } } sock_post($purl,"uu=rrrrrrrrrrrrrrrr"); function sock_post($url, $query) { $info = parse_url($url); $fp = fsockopen($info["host"], 80, $errno, $errstr, 3); $head = "POST ".$info['path']."?".$info["query"]." HTTP/1.0rn"; $head .= "Host: ".$info['host']."rn"; $head .= "Referer: http://".$info['host'].$info['path']."rn"; $head .= "Content-type: application/x-www-form-urlencodedrn"; $head .= "Content-Length: ".strlen(trim($query))."rn"; $head .= "rn"; $head .= trim($query); $write = fputs($fp, $head); while (!feof($fp)) { $line = fread($fp,4096); echo $line; } } ?>
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