[pmwiki-users] FW: Captcha

Peter K.H. Gragert p.k.h.gragert at misc.utwente.nl
Mon May 12 02:22:39 CDT 2008

Trying to find a solution for the guestbook you use
I changed it with a captcha usage it looks now as follows:
Picture of test:


End of picture


First you have to fill in the captcha digits to see the Guestbook input
fields. Then you may ad a message. (only clicking OK of the guestbookform)
If the message contains http:// (any case) nothing is added!!!
Otherwise it is immediately added after "Start of Guestbook".

The changes in guestbook.php are as follows:
------in guestbook.php-------

      $msg = StripCSlashes($_GET['message']);


        $rcpage = ReadPage($pagename,"");


      } else {

        $default = "----";

        $rcpage = ReadPage($pagename,"");

        $pos=strpos($rcpage['text'],"Start of Guestbook");

        $len=strlen("Start of Guestbook");



        $rcpage['text'] = $before.

           /*   "\n$$$$\$default".  pog? */

                "\n\n%green%Posted on ''".strftime($TimeFmt,$Now).

                " by ''".StripCSlashes($_GET["name"])."%%[[<<]]".

(($_GET["homepage"])?StripCSlashes($_GET["homepage"]):"")."\n\n". $msg .

                "\n\n----".$homepage. "". $HTTP_GET_VARS["homepage"].





--------end part of guestbook.php

The Guestbook PmWiki source
==================start page======================

!!To go against evil bots

Fill in the captcha, to send a message!\\

(:input form action={*$PageUrl} method=post:)

Enter value: {$Captcha} (:input captcha:)

(:input submit:)

(:input end:)




(:if captcha:)

%green%You may enter a message%%



%red%Not allowed%%


!!Start of Guestbook


%green%Posted on ''12 mei 2008 om 09:09 by ''PKHG%%[[<<]]pepe.cwsurf.de


Second try without a www adres




%green%Posted on ''12 mei 2008 om 09:06 by ''Wo kommt dies an?%%[[<<]]


Peter war hier!


===========end page=================


-----Oorspronkelijk bericht-----
Van: pmwiki-users-bounces at pmichaud.com
[mailto:pmwiki-users-bounces at pmichaud.com] Namens Mark Trumpold
Verzonden: zondag 11 mei 2008 20:26
Aan: PmWiki Users
Onderwerp: [pmwiki-users] Captcha


Hi All


Cam i place a captcha just on one page, eg the guestbook? If so how?


The rest of the wiki has an edit password so I dont really need  








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