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Re: automating aspx VIEWSTATE via libcurl

From: Waruna Geekiyanage <warunans_at_gmail.com>
Date: Mon, 1 Sep 2008 09:16:53 +0530

is the file cookiefile.txt updated with cookie values?

2008/9/1 CarbonCopy123 <artificialsteve_at_gmail.com>

> Hello, I have a php script that automates the process of
> (https login + search_page + result (and if result not empty)= xls file
> download ) for a web app.
> Here's the problem: I am doing the exact same https POST that a normal user
> would, however, I get strange results with curl. For example, the search
> page is for finding payment info, it takes a start date, and an end date, as
> well as a simple radio button for the payment type, I have been doing this
> search for almost 2 weeks now, and regardless of the dates i specify, I get
> the same payment info every time, which is from the very first time I made
> the request!!??
> And now I am getting a "nothing was found" from this server, even though I
> can log in myself, perform the exact same search, and get 20 pages of db
> results!!
>
> I was hoping that someone out there may be able to shed some light on this
> process.
> my strategy consists of the following:
> a) retrieve today's login page using curl and save.
> b) extract the hidden form fields (VIEWSTATE, EVENTVALIDATION) and save to
> mysql table.
> c) create the POSTFIELDS with mysql data and retrieve the response)
> - save the result and repeat b)
> d) fill in search form
> - repeat c), save result, repeat b)
> f) if there were new payments found, repeat c)
> g) and finally, repeat c), only this time download the .xls file and
> proceed to the xls parser automation.....
>
> are you still with me here? basically, I am not sure what the
> hidden VIEWSTATE and EVENTVALIDATION data is obviously, and if I am being
> sabatoged for making a robot, or what, all I know is that the server isn't
> telling me I made a BAD REQUEST, ( i know what that looks like).
> and here's my curl function. please help me if you have done this kind of
> task before!!!
> this is the the one I use to retrieve the initial page:
>
> <?php
> function get_with_cookies( $url )
> {
> $options = array(
> CURLOPT_COOKIEJAR => '/home2/bridgep6/includes/cookiefile.txt',
> CURLOPT_COOKIEFILE => '/home2/bridgep6/includes/cookiefile.txt',
> CURLOPT_RETURNTRANSFER => true, // return web page
> CURLOPT_FOLLOWLOCATION => true, // follow redirects
> CURLOPT_ENCODING => "", // handle compressed
> CURLOPT_USERAGENT => "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US;
> rv:1.4) Gecko/20030624 Netscape/7.1 (ax)", // who am i
> CURLOPT_AUTOREFERER => true, // set referer on redirect
> CURLOPT_CONNECTTIMEOUT => 120, // timeout on connect
> CURLOPT_TIMEOUT => 120, // timeout on response
> CURLOPT_MAXREDIRS => 10, // stop after 10 redirects
> );
> $ch = curl_init( $url );
> curl_setopt_array( $ch, $options );
> $content = curl_exec( $ch );
> $err = curl_errno( $ch );
> $errmsg = curl_error( $ch );
> $header = curl_getinfo( $ch );
> curl_close( $ch );
> $header['errno'] = $err;
> $header['errmsg'] = $errmsg;
> $header['content'] = $content;
> return $header;
> }
>
> // AND THIS IS THE MAIN FUNCTION i USE FOR EVERYTHING ELSE
>
> function post_web_page( $url,$postfields )
> {
> $options = array(
> CURLOPT_POST =>1,
> CURLOPT_COOKIEJAR => '/home2/bridgep6/includes/cookiefile.txt',
> CURLOPT_COOKIEFILE => '/home2/bridgep6/includes/cookiefile.txt',
> CURLOPT_POSTFIELDS =>$postfields,
> CURLOPT_RETURNTRANSFER => true, // return web page
> CURLOPT_FOLLOWLOCATION => true, // follow redirects
> CURLOPT_ENCODING => "", // handle compressed
> CURLOPT_USERAGENT => "Mozilla/5.0 (Windows; U; Windows NT 5.0;
> en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax)", // who am i
> CURLOPT_AUTOREFERER => true, // set referer on redirect
> CURLOPT_CONNECTTIMEOUT => 120, // timeout on connect
> CURLOPT_TIMEOUT => 120, // timeout on response
> CURLOPT_MAXREDIRS => 10, // stop after 10 redirects
> );
> $ch = curl_init( $url );
> curl_setopt_array( $ch, $options );
> $content = curl_exec( $ch );
> $err = curl_errno( $ch );
> $errmsg = curl_error( $ch );
> $header = curl_getinfo( $ch );
> curl_close( $ch );
> $header['errno'] = $err;
> $header['errmsg'] = $errmsg;
> $header['content'] = $content;
> return $header;
> }
> ?>
>
> thank you very much,
> Ryan Pope
>
>
> _______________________________________________
> http://cool.haxx.se/cgi-bin/mailman/listinfo/curl-and-php
>
>

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Received on 2008-09-01