我正在使用以下代码登录到asp网站，但它不起作用。
<?php
/************************************************
* ASP.NET web site scraping script;
* Developed by MishaInTheCloud.com
* Copyright 2009 MishaInTheCloud.com. All rights reserved.
* The use of this script is governed by the CodeProject Open License
* See the following link for full details on use and restrictions.
* http://www.codeproject.com/info/cpol10.aspx
*
* The above copyright notice must be included in any reproductions of
this script.
************************************************/
error_reporting(E_ALL);
/************************************************
* values used throughout the script
************************************************/
// urls to call - the login page and the secured page
$urlLogin = "http://www.website.com/Default.aspx";
$urlSecuredPage = "http://www.website.com/Default.aspx";
// POST names and values to support login
$nameUsername=rawurlencode('ctl00$txtLoginName'); // the name of the username textbox on the login form
$namePassword=rawurlencode('ctl00$txtPassword'); // the name of the password textbox on the login form
$nameLoginBtn=rawurlencode('ctl00$btnLogin'); // the name of the login button (submit) on the login form
$valUsername ='myusername'; // the value to submit for the username
$valPassword ='mypass'; // the value to submit for the password
$valLoginBtn ='Login'; // the text value of the login button itself
// the path to a file we can read/write; this will
// store cookies we need for accessing secured pages
$cookieFile = 'cookie.txt';
// regular expressions to parse out the special ASP.NET
// values for __VIEWSTATE and __EVENTVALIDATION
$regexViewstate = '/__VIEWSTATE\" value=\"(.*)\"/i';
$regexEventVal = '/__EVENTVALIDATION\" value=\"(.*)\"/i';
/************************************************
* utility function: regexExtract
* use the given regular expression to extract
* a value from the given text; $regs will
* be set to an array of all group values
* (assuming a match) and the nthValue item
* from the array is returned as a string
************************************************/
function regexExtract($text, $regex, $regs, $nthValue)
{
if (preg_match($regex, $text, $regs)) {
$result = $regs[$nthValue];
}
else {
$result = "";
}
return $result;
}
/************************************************
* initialize a curl handle; we'll use this
* handle throughout the script
************************************************/
$ch = curl_init();
/************************************************
* first, issue a GET call to the ASP.NET login
* page. This is necessary to retrieve the
* __VIEWSTATE and __EVENTVALIDATION values
* that the server issues
************************************************/
curl_setopt($ch, CURLOPT_URL, $urlLogin);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:11.0) Gecko/20100101 Firefox/11.0' );
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
$data=curl_exec($ch);
echo curl_error($ch);
// from the returned html, parse out the __VIEWSTATE and
// __EVENTVALIDATION values
$viewstate = regexExtract($data,$regexViewstate,$regs,1);
$eventval = regexExtract($data,$regexEventVal,$regs,1);
/************************************************
* now issue a second call to the Login page;
* this time, it will be a POST; we'll send back
* as post data the __VIEWSTATE and __EVENTVALIDATION
* values the server previously sent us, as well as the
* username/password. We'll also set up a cookie
* jar to retrieve the authentication cookie that
* the server will generate and send us upon login.
************************************************/
$postData = '__VIEWSTATE='.rawurlencode($viewstate)
.'&__EVENTVALIDATION='.rawurlencode($eventval)
.'&'.$nameUsername.'='.$valUsername
.'&'.$namePassword.'='.$valPassword
.'&'.$nameLoginBtn.'='.$valLoginBtn
;
curl_setOpt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
curl_setopt($ch, CURLOPT_URL, $urlLogin);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookieFile);
$data = curl_exec($ch);
/************************************************
* with the authentication cookie in the jar,
* we'll now issue a GET to the secured page;
* we set curl's COOKIEFILE option to the same
* file we used for the jar before to ensure the
* authentication cookie is sent back to the
* server
************************************************/
curl_setOpt($ch, CURLOPT_POST, FALSE);
curl_setopt($ch, CURLOPT_URL, $urlSecuredPage);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookieFile);
$data = curl_exec($ch);
// at this point the secured page may be parsed for
// values, or additional POSTS made to submit parameters
// and retrieve data. For this sample, we'll just
// echo the results.
echo $data;
/************************************************
* that's it! Close the curl handle
************************************************/
curl_close($ch);
?>
网站的 HTML 代码：
<div>
<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" />
<input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" />
<input type="hidden" name="__LASTFOCUS" id="__LASTFOCUS" value="" />
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKMTIblablabla" />
</div>
<div>
<input type="hidden" name="__PREVIOUSPAGE" id="__PREVIOUSPAGE" value="W3sZnblblabla" />
<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEWjwEC7blblabla" />
</div>
<div id="ctl00_pnlLoginBox">
<span id="ctl00_Label1">Username:</span><br />
<input name="ctl00$txtLoginName" type="text" id="ctl00_txtLoginName" style="width:100px;" /><br />
<span id="ctl00_Label2">Password:</span><br />
<input name="ctl00$txtPassword" type="password" id="ctl00_txtPassword" style="width:100px;" /><br />
<input type="submit" name="ctl00$btnLogin" value="Login" id="ctl00_btnLogin" style="width:104px;" />
</div>
<div align="center" style="padding-top:2px">
<a href="/getpassword.aspx" id="ctl00_aForgotPassword">
<span>Forgot your Password</span>
</a>
</div>
我收到以下错误：
Notice: Undefined variable: viewstate in /home/me/test3.php on line 101
Notice: Undefined variable: eventval in /home/me/test3.php on line 102
我尝试手动设置 viewstate 和 eventval 但它没有登录。我尝试了很多在这个网站上找到的不同脚本，但都没有奏效。有人可以帮我一点。