CAPTCHA plugin for blosxom

Today's piece of code is a CAPTCHA plugin for blosxom. This one is based on ASCII art (there already is one that generates images) generating 'figlet' program.

You can see the effect by using the 'Post Comment' button below.

Things of note are that you will need to have 'figlet' installed, or alternatively just use the venerable BSD 'banner' program. Second thing is that you should configure wbcaptcha to be loaded before writeback (or other writeback -acting plugin, like wbnotify). So if your writeback is called '1writeback', call wbcaptcha '05wbcaptcha'.

The story.html setup can be tricky unless you use interpolate_fancy, with which it really isn't. Here is sample story.html for wbcaptcha. Look for things having wbcaptcha. Best of all, read documentation for plugin with 'perldoc wbcaptcha'.

You can download wbcaptcha - 2004-10-11 here.

Please note that this plugin only affects incoming comments/writebacks, not trackbacks. For more information please look at blosxom spam prevention wiki page.

I recently pondered wbcaptcha security in a short piece, it may be of interest.

Edit 2004-10-18: Bill Ward made his captcha plugin available.

Edit 2005-8-25: Warning about trackbacks and spam prevention link.