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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