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