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硕编程。
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