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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Plugin to show reCaptcha when a user registers
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Plugin
* @package StatusNet
* @author Eric Helgeson <erichelgeson@gmail.com>
* @copyright 2009
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
require_once(INSTALLDIR.'/plugins/Recaptcha/recaptchalib.php');
class RecaptchaPlugin extends Plugin
{
var $private_key;
var $public_key;
var $display_errors;
var $failed;
var $ssl;
function onInitializePlugin(){
if(!isset($this->private_key)) {
common_log(LOG_ERR, 'Recaptcha: Must specify private_key in config.php');
}
if(!isset($this->public_key)) {
common_log(LOG_ERR, 'Recaptcha: Must specify public_key in config.php');
}
}
function checkssl(){
if(common_config('site', 'ssl') === 'sometimes' || common_config('site', 'ssl') === 'always') {
return true;
}
return false;
}
function onEndRegistrationFormData($action)
{
$action->elementStart('li');
$action->raw('<label for="recaptcha">Captcha</label>');
// AJAX API will fill this div out.
// We're calling that instead of the regular one so we stay compatible
// with application/xml+xhtml output as for mobile.
$action->element('div', array('id' => 'recaptcha'));
$action->elementEnd('li');
$action->recaptchaPluginNeedsOutput = true;
return true;
}
function onEndShowScripts($action)
{
if (isset($action->recaptchaPluginNeedsOutput) && $action->recaptchaPluginNeedsOutput) {
// Load the AJAX API
if ($this->checkssl()) {
$url = "https://api-secure.recaptcha.net/js/recaptcha_ajax.js";
} else {
$url = "http://api.recaptcha.net/js/recaptcha_ajax.js";
}
$action->script($url);
// And when we're ready, fill out the captcha!
$key = json_encode($this->public_key);
$action->inlinescript("\$(function(){Recaptcha.create($key, 'recaptcha');});");
}
return true;
}
function onStartRegistrationTry($action)
{
$resp = recaptcha_check_answer ($this->private_key,
$_SERVER["REMOTE_ADDR"],
$action->trimmed('recaptcha_challenge_field'),
$action->trimmed('recaptcha_response_field'));
if (!$resp->is_valid) {
if($this->display_errors) {
$action->showForm ("(reCAPTCHA error: " . $resp->error . ")");
}
$action->showForm("Captcha does not match!");
return false;
}
}
function onPluginVersion(&$versions)
{
$versions[] = array('name' => 'Recaptcha',
'version' => STATUSNET_VERSION,
'author' => 'Eric Helgeson',
'homepage' => 'http://status.net/wiki/Plugin:Recaptcha',
'rawdescription' =>
_m('Uses <a href="http://recaptcha.org/">Recaptcha</a> service to add a '.
'captcha to the registration page.'));
return true;
}
}
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