---
labels:
- 'Stage-Beta'
summary: provides captcha protection for registration form
...
Introduction
============
Prosody-captcha is a little modification of prosody's
"mod\_register.lua" module that provides captcha protection for
registration form.
Installation
============
First of all you should build and install lua bindings for libgd —
[lua-gd](https://github.com/ittner/lua-gd/).
Then clone repsository lua-captcha:
$ git clone https://github.com/mrDoctorWho/lua-captcha
install it:
$ make install
Configuration
=============
After that you would configure prosody. This module requires from you 4
fields, you should add this into your VirtualHost entry.
captcha_config = {
dir = "/tmp"; -- Directory used to storage captcha images. Please make sure prosody user allowed to write there.
timeout = 60; -- Timeout when captcha will expire
web_path = "challenge"; -- Web path used to separate main prosody site from itself modules.
font = "/usr/lib/prosody/FiraSans-Regular.ttf" -- Font used for captcha text
}
You can run script "install.lua" to install this or instead of that
while prosody developers didn't accepted "dataforms" changes you should
replace standard prosody "dataforms.lua" located in ubuntu in
/usr/lib/prosody/util by another one from this repository. You should do
the same thing with "mod\_register.lua" located in ubuntu in
/usr/lib/prosody/modules.
After this all you can try to register on your server and see the
captcha.
TODO
====
- Maybe use recaptcha instead of libgd.