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Re: How to cURL a JSP page

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On 28/10/12 04:12, Ankur Sinha wrote:
> I am trying to cURL my university login page. I want users to enter their university id and pass in my website,
> my website will curl to university website, authenticate and then allow them to login or give error accordingly.

There are quite many people who won't do that, login in to a site from a 
third party page, as this can cause login credentials be stolen.


> But my university portal is a jsp page.

This don't make any difference how curl works.

> And after having posted in StackOverflow and other forums before, this
> is what I came up with. I need further help on where I am going wrong and how to rectify it.
>
> [code]
> <form class="form-horizontal" action="curl.php" method="POST">
>          <div class="control-group">
>              <label class="control-label" for="inputEmail">Username</label>
>              <div class="controls">
>                  <input type="text" id="inputEmail" placeholder="Username">

You will not send any useful data to your curl page, see examples at 
w3schools: http://www.w3schools.com/html/html_forms.asp

>              </div>
>          </div>
>          <div class="control-group">
>              <label class="control-label" for="inputPassword">Password</label>
>              <div class="controls">
>                  <input type="password" id="inputPassword" placeholder="Password">

You will not send any useful data to your curl page, see examples at 
w3schools: http://www.w3schools.com/html/html_forms.asp


>              </div>
>          </div>
>          <div class="control-group">
>              <div class="controls">
>                  <label class="checkbox">
>                      <input type="checkbox"> Remember me
>                  </label>
>                  <button type="submit" class="btn">Sign in</button>
>              </div>
>          </div>
>      </form>
> [/CODE]
>
> Now this is my curl.php file:
>
> [CODE]
> <?php
>      $address = "http://evarsity.srmuniv.ac.in/srmswi/usermanager/youLogin.jsp"; //site URL
>      $post = "username=txtRegNumber&pass=txtPwd"; //Parameters to be sent. Written like GET.

You need to set the login name and password, in this case you just using 
static values txtRegNumber / txtPwd, you need to assign those dynamically.
See http://www.php.net/manual/en/language.variables.basics.php

>      $welcomeMessage = "Welcome..."; //This is the message that is displayed when a login is successful
>
>      $options = array(
>         CURLOPT_USERAGENT => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)',
>         CURLOPT_POST => true, //using post
>         CURLOPT_URL => $address,  //where to go
>         CURLOPT_POSTFIELDS => $post, //input params
>         CURLOPT_RETURNTRANSFER => true, //Returns a string value of the request
>         CURLOPT_SSL_VERIFYPEER => false, //Avoid SSL problems
>         CURLOPT_COOKIEFILE => 'cookie.txt', //Save cookies
>         CURLOPT_COOKIEJAR => 'cookies.txt' //Cookies located
>         CURLOPT_USERPWD ==> [username]:[password]);
>

You need to make the connection to the site, see example at php.net:
http://www.php.net/manual/en/function.curl-init.php

>            if (strpos($content, $welcomeMessage) !== false){
>            /*
>            Do whatever,I don't know what to do here though
>            */
>            }

You should make error checks, see examples at php.net:
http://www.php.net/manual/en/function.curl-errno.php
http://www.php.net/manual/en/function.curl-error.php

When you confirm that you have logged in, you have to be sure that the 
string you look for don't include HTML tags.

>        curl_close($ch); //close connections
>      ?>
> [/CODE]
>
> Please let me know where I am going wrong, why I am not able to login and after logging in, how to log out.

Drop the cookie, if you want the university web server to know it, make 
a curl request to the logout link/page.


Good luck with your school assignment.

-- 

  //Aho

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Thread

How to cURL a JSP page Ankur Sinha <ankur218@gmail.com> - 2012-10-27 20:12 -0700
  Re: How to cURL a JSP page "J.O. Aho" <user@example.net> - 2012-10-28 09:43 +0100
    Re: How to cURL a JSP page Ankur Sinha <ankur218@gmail.com> - 2012-10-28 05:23 -0700
      Re: How to cURL a JSP page Jerry Stuckle <jstucklex@attglobal.net> - 2012-10-28 10:04 -0400
  Re: How to cURL a JSP page Denis McMahon <denismfmcmahon@gmail.com> - 2012-10-28 22:12 +0000

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