php curl带有csrf-token验证模拟提交方法

2017-01-13 10:54:05来源:csdn作者:q601115211人点击

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);

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