On Thu, Mar 20, 2008 at 10:39 AM, Lamp Lists <lamp.lists@xxxxxxxxx> wrote:
> the way I solved the "click back button" issue (simplified vresion):
>
> confirmation page (conf.php) -> transfer page (tp.php) -> thank you page (typ.php)
>
> #conf.php
> # after the form is submitted and confirmed
> header('location: tp.php?url=typ.php');
> exit;
>
> #tp.php
> header('location:$_GET['url']);
> exit;
>
> and, if visitor clicks on back button on thakyou page he will go actually to the transfer page - which will send him back to thankyou page
> ;)
>
> -ll
>
>
>
>
>
> ----- Original Message ----
> From: tedd <tedd.sperling@xxxxxxxxx>
> To: php-general@xxxxxxxxxxxxx
> Sent: Wednesday, March 19, 2008 11:43:06 AM
> Subject: Re: Double click problem
>
> At 4:19 PM +0000 3/19/08, Richard Heyes wrote:
> >tedd wrote:
> >// ...
> >
> >Your first (and the quickest by far) method to employ would be to
> >disable the submit button using Jabbascript when the form is
> >submitted. That will stop the vast majority of occurrences. You
> >could also employ an intermediary page which actually does the card
> >processing and when complete redirects to the "thank you" page. ie.
> >
> > Form --> "Please wait..." page --> "Thank you" page
>
> That's in place. The person clicks the "confirm purchase" and they
> are taken to a "confirm and thank you page".
>
> The problem here is two fold -- 1) clicking the "confirm
> purchase"button twice, which I think js will stop; 2) and clicking
> the back-button which the token should stop.
>
> Now, I just need to develop a test for this. Sometime writing a test
> is more of a problem than writing the solution.
>
> Thanks for everyone's help.
>
> Cheers,
>
> tedd
>
>
> --
> -------
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>
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Allowing unscrubbed user data in a header is a really bad idea.
- http://en.wikipedia.org/wiki/HTTP_response_splitting
- http://www.owasp.org/index.php/Open_redirect
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