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超轻量级php框架startmvc

详解php curl带有csrf-token验证模拟提交方法

更新时间:2020-03-27 10:07:01 作者:startmvc
通常为了安全会在表单里加入一个随机的token值来防止csrf攻击。要想模拟提交有token验证的

通常为了安全会在表单里加入一个随机的token值来防止csrf攻击。

要想模拟提交有token验证的网站其实也不难。

1.通过正则获取token 2.带上获取到的token模拟提交

下面是一个成功的例子

目录结构


│ form.php –需要模拟的表单 
│ getForm.php – 模拟提交程序 
│ post.php –表单验证程序 
│ 
└─cookie – cookie存放目录

getForm.php


<?php
$cookie_file = './cookie/'.time().'.cookie';
$str = getResponse('http://a.curl.com:81/form.php',[],$cookie_file);
setcookie("PHPSESSID", "vc0heoa6lfsi3gger54pkns152");
preg_match('/<input name="token" type="hidden" value="(.*)"/U', $str, $match);

$post['token'] = $match[1];
$post['name'] = '3333333';
$post['password'] = '12121213';
print_r(getResponse('http://a.curl.com:81/post.php', $post, $cookie_file));

function getResponse($url, $data=[], $cookie_file='', $timeout = 3)
 {
 if(empty($cookie_file))
 {
 $cookie_file = '.cookie';
 }

 $ch = curl_init();
 curl_setopt($ch, CURLOPT_URL, $url);
 curl_setopt($ch, CURLOPT_REFERER, "https://www.baidu.com"); //构造来路
 curl_setopt($ch, CURLOPT_USERAGENT,"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.59 Safari/537.36");

 if(!empty($data))
 {
 curl_setopt($ch, CURLOPT_POST, true);
 curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
 }
 curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file);// 取cookie的参数是
 curl_setopt ($ch, CURLOPT_COOKIEFILE, $cookie_file); //发送cookie
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
 try
 {
 $handles = curl_exec($ch);
 curl_close($ch);
 return $handles;
 }
 catch (Exception $e)
 {
 echo 'Caught exception: ', $e->getMessage(), "\n";
 }
 unlink($cookie_file);
 }

form.php


<?php
session_start();
$_SESSION['token'] = md5($_SERVER['REQUEST_TIME']);
$_SESSION['time'] = date("Y-m-d H:i:s");
session_write_close();
//echo $_SESSION['auth'];
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 <title> new document </title>
 <meta name="generator" content="editplus" />
 <meta name="author" content="" />
 <meta name="keywords" content="" />
 <meta name="description" content="" />
 </head>
 <body>
<form action="post.php" method="post">
 <p><input name="name" type="text"></p>
 <p><input name="password" type="password"></p>
 <p><input name="token" type="hidden" value="<?php echo $_SESSION['token']?>"></p>
 <p><input type="submit"></p>
</form>
 </body>
</html>

post.php


<?php
session_start();
if(empty($_POST['token']))
{
 exit ("token is empty!");
}

if(empty($_SESSION['token']))
{
 exit ("session is empty");
}

if($_POST['token'] != $_SESSION['token'])
{
 exit ("token ");
} else
{
 unset($_SESSION['token']);
}

echo PHP_EOL;
echo "pass";
print_r($_REQUEST);

echo PHP_EOL;
print_r($_SERVER);

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

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