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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($this->public_key)) {
- common_log(LOG_ERR, 'Recaptcha: Must specify public_key in config.php');
- }
- }
- function onEndRegistrationFormData($action)
- {
- $action->elementStart('li');
- // TRANS: Field label.
- $action->raw('<label for="recaptcha">'._m('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 (StatusNet::isHTTPS()) {
- $url = "https://www.google.com/recaptcha/api/js/recaptcha_ajax.js";
- } else {
- $url = "http://www.google.com/recaptcha/api/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) {
- // TRANS: Error message displayed if there is in error communicating with the
- // TRANS: reCAPTCHA server. %s is the error.
- $action->showForm(sprintf(_m('(reCAPTCHA error: %s)', $resp->error)));
- }
- // TRANS: Error message displayed if a provided captcha response does not match.
- $action->showForm(_m('Captcha does not match!'));
- return false;
- }
- }
- function onPluginVersion(&$versions)
- {
- $versions[] = array('name' => 'Recaptcha',
- 'version' => GNUSOCIAL_VERSION,
- 'author' => 'Eric Helgeson',
- 'homepage' => 'http://status.net/wiki/Plugin:Recaptcha',
- 'rawdescription' =>
- // TRANS: Plugin description.
- _m('Uses <a href="http://recaptcha.org/">Recaptcha</a> service to add a '.
- 'captcha to the registration page.'));
- return true;
- }
- }
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