Forum OpenACS Q&A: Re: Captchas for the register form

I have been trying to compile tclmagick on my linux macheins, but it always fails .

Since you have gone thru the whole cycle can you please help me understanding these ;
1) On the tclmagick site it says that it will work with pure tcl , tk is not required , but i can not compile it without tk. unfortunatley when i try to install tk it requires certain X libraries which i dont have on the server .
2) can you tell me what X libraries do i need to compile tclmagick ?
3) I installed graphicsmagick and tried to compile tclmagick against it , but it again gave me errors about tk and I get Xlib.h not found when i try to compile tclmagick.

on this post i think you mentioned pagna simple compiled tcl magick , what do i need to use it ? do i need imagemagick installed in a certain folder ? as when i tried to run ./compile in the folder of tclmagik -simple it gave me errors.

I have been trying to compile tclmagick on my servers , I dont have tk or X11 installed ? can you please help me.

thanks

What do you think about use reCAPTCHA.net to resolve the Inaccessibility of CAPTCHA?

I've developed a package that use this service and can provide this check in ad_form.

Try to download it at: http://dl.dropbox.com/u/6061429/recaptcha/recaptcha.tar.gz

You need create an account at www.recaptcha.net and get the public and private key. After this, add this keys in /recaptcha/public_key.txt and /recaptcha/private_key.txt.

To use it in ad_form, add this line:

recaptcha::create -form $adform_name

and add a validate in ad_form

-validate {
        {recaptcha_service
                {[recaptcha::check -challenge_field $recaptcha_challenge_field -response_field $recaptcha_response_field]}
                "\"#<span>recaptcha.Title</span>#\" #<span>recaptcha.Error</span>#"
        }
}

In my blog I posted an image of this usage http://alessandrolandim.blogspot.com/2010/04/recaptchanet-no-openacs.html

Please make sure code works well when connecting securely.

More info under "Using reCAPTCHA on an https site" at http://recaptcha.net/apidocs/captcha/client.html