Solved

Trying to use CURL to open aspx page

Posted on 2010-08-24
8
1,166 Views
Last Modified: 2013-12-13
Hi -
I am trying to use curl to open an aspx/ashx page so I can post some xml to it -
I can use the following code to open non-aspx (html) pages but when I change the url to any page with an .aspx or .ashx extension it doesn't work -
Any insights appreciated -
I have been fooling with this for a couple of days now -
and feel like I have read a million curl postings here on EE -
Thanks in advance -
Richard

<?php
// create a new cURL resource
$ch = curl_init();

// set URL and other appropriate options
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");
curl_setopt($ch, CURLOPT_HEADER, 0);

// grab URL and pass it to the browser
curl_exec($ch);

// close cURL resource, and free up system resources
curl_close($ch);
?>


0
Comment
Question by:rwinnick
  • 3
  • 2
  • 2
  • +1
8 Comments
 
LVL 2

Expert Comment

by:arch-itect
ID: 33514916
Are there any client side code in the .aspx file?  
What does it look like when you "wget" the .aspx file?  
Please post it here if you can.

If you don't have wget:

http://unxutils.sourceforge.net/
0
 
LVL 110

Expert Comment

by:Ray Paseur
ID: 33515035
Let's not waste time with hypothetical examples.  Please post the ACTUAL URL you're trying to use and the ACTUAL code you're trying to use.

CURL has a lot of intricately detailed moving parts, and complex interactions between the scripts.  There is no "one-size-fits-all" answer.  Every CURL post script is an original work product.  Most of them are successful only after much trial and error.

Best regards, ~Ray
0
 

Author Comment

by:rwinnick
ID: 33515800
Thanks for the quick replies -
I will get permission to 'publish' the url from the appropriate folks -
and will also get the code together that I have tried -
getting late to catch up with them today -
will follow up early am tomorrow -
thanks again -
R
0
Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

 
LVL 26

Accepted Solution

by:
EddieShipman earned 400 total points
ID: 34044383
I have done that before, the thing is you have to do two calls. One to get the __VIEWSTATE and __EVENTVALIDATION values then
use them in the second post.

see code below:
    $ch1 = curl_init();
    curl_setopt($ch1, CURLOPT_HEADER, false);
    curl_setopt($ch1, CURLOPT_URL, "http://www.website/search_page.aspx");
    curl_setopt($ch1, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch1, CURLOPT_RETURNTRANSFER, true);
    $returned = curl_exec($ch1);
    curl_close($ch1);
    unset($ch1);
    /*********************************************
    * Clean up the HTML returned from the search
    * Boy they have some crappy HTML!!!!
    **********************************************/
    $tidy = new tidy;
    $tidy->parseString($returned, $config, 'utf8');
    $tidy->cleanRepair();
    $tidyoutput = tidy_get_output($tidy);
    /*********************************************
    * Now use simple_html_dom to parse out the 
    * results, you can get it here:
    * http://simplehtmldom.sourceforge.net/
    **********************************************/
    $html = new simple_html_dom();
    $html->load($tidyoutput);
    unset($returned);
    unset($tidyoutput);
    /*********************************************
    * Get the __VIEWSTATE and __EVENTVALIDATION
    * values
    **********************************************/
    $vs = $html->getElementById ('__VIEWSTATE');
    $ev = $html->getElementById ('__EVENTVALIDATION');
    $errors = 0;
    if(is_object($ev)) {
      $eventvalidation = $ev->getAttribute("value");
    } else {
     $errors++;
    }
    if(is_object($vs)) {
      $viewstate       = $vs->getAttribute("value");
    } else {
     $errors++;
    }
    if($errors> 0) {
      die("There were errors getting __VIEWSTATE/__EVENTVALIDATION values");
    }
    $html->clear();
    unset($ev);
    unset($vs);    
    unset($errors);
    /*********************************************
    * Now let's fill in the values and search
    **********************************************/
    $ch2 = curl_init();
    curl_setopt($ch2, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch1, CURLOPT_URL, "http://www.website/search_page.aspx");
    curl_setopt($ch2, CURLOPT_HEADER, false);
    curl_setopt($ch2, CURLOPT_POST, true);
    curl_setopt($ch2, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch2, CURLOPT_POSTFIELDS, array('__VIEWSTATE'=>$viewstate,
                                               '__EVENTVALIDATION'=>$eventvalidation,
                                               'btnSubmit' => 'Go',
                                               'searchvalue'=>$value));
    $returned = curl_exec($ch2);
    // Simple error checking here
    if (!$returned) {
      echo curl_error($ch2); 
    }
    curl_close($ch2);
    unset($eventvalidation);
    unset($viewstate);
    unset($ch2);

Open in new window

0
 
LVL 110

Assisted Solution

by:Ray Paseur
Ray Paseur earned 100 total points
ID: 34046655
"Two calls..." Yep.  Typically the first is GET and the second is POST.  And typically you need to scrape the contents of the <form> into your local variables for the second call.  That is why I asked rwinnick to post the ACTUAL URL -- because without it, we are just guessing about what might be needed.  Some of the guesses may be obvious, others less so.  But life is too short to waste time guessing when the information can be read off the screen.
0
 
LVL 26

Expert Comment

by:EddieShipman
ID: 34046883
Hey, I gave him the tools, including showing how to scrape the items in the page.
0
 
LVL 110

Expert Comment

by:Ray Paseur
ID: 34047157
Agree it is a good start.  But what if the form asks for information that goes beyond the scope of the keys of CURLOPT_POSTFIELDS?

That's why I say each such project is a bit of R&D.
0
 

Author Closing Comment

by:rwinnick
ID: 34076438
Hi Guys -
Could not get client to agree to release info -
So I am awarding points for trying to help :-)
Majority to Eddie for sample code -
Also points to Ray as I know he would have helped if I could have gotten code -
Thanks for the support -
Guess I will just have to keep fooling with this -
RIchard
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
migrating to phpbb forum from vBulletin 4.2 3 43
pass foreach data in php into jquery ajax 10 53
Session time out quickly. 6 28
Why is my $_POST not going to results page 10 42
Popularity Can Be Measured Sometimes we deal with questions of popularity, and we need a way to collect opinions from our clients.  This article shows a simple teaching example of how we might elect a favorite color by letting our clients vote for …
Generating table dynamically is the most common issue faced by php developers.... So it seems there is a need of an article that explains the basic concept of generating tables dynamically. It just requires a basic knowledge of html and little maths…
The viewer will learn how to dynamically set the form action using jQuery.
This tutorial will teach you the core code needed to finalize the addition of a watermark to your image. The viewer will use a small PHP class to learn and create a watermark.

696 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question