node-recaptcha

node-recaptcha renders and verifies Recaptcha captchas.

Installation

Via git:

$ git clone git://github.com/mirhampt/node-recaptcha.git ~/.node_libraries/node-recaptcha

Via npm:

$ npm install recaptcha

Setup

Before you can use this module, you must visit http://www.google.com/recaptcha
to request a public and private API key for your domain.

Running the Tests

To run the tests for this module, you will first need to install
nodeunit. Then, simply run:

$ nodeunit test.js

Customizing the Recaptcha

See these instructions
for help customizing the look of Recaptcha. In brief, you will need to add a
structure like the following before the form in your document:

Example Using Express

app.js:

var express = require('express'),
Recaptcha = require('recaptcha').Recaptcha;

var PUBLIC_KEY = 'YOUR_PUBLIC_KEY',
PRIVATE_KEY = 'YOUR_PRIVATE_KEY';

var app = express.createServer();

app.configure(function() {
app.use(express.bodyParser());
});

app.get('/', function(req, res) {
var recaptcha = new Recaptcha(PUBLIC_KEY, PRIVATE_KEY);

res.render('form.jade', {
layout: false,
locals: {
recaptcha_form: recaptcha.toHTML()
}
});
});

app.post('/', function(req, res) {
var data = {
remoteip: req.connection.remoteAddress,
challenge: req.body.recaptcha_challenge_field,
response: req.body.recaptcha_response_field
};
var recaptcha = new Recaptcha(PUBLIC_KEY, PRIVATE_KEY, data);

recaptcha.verify(function(success, error_code) {
if (success) {
res.send('Recaptcha response valid.');
}
else {
// Redisplay the form.
res.render('form.jade', {
layout: false,
locals: {
recaptcha_form: recaptcha.toHTML()
}
});
}
});
});

app.listen(3000);

views/form.jade:

form(method='POST', action='.')
!= recaptcha_form

input(type='submit', value='Check Recaptcha')

Make sure express and jade
are installed, then:

$ node app.js