forked from GNUsocial/gnu-social
105 lines
3.2 KiB
PHP
105 lines
3.2 KiB
PHP
<?php
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/**
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* Laconica, 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 Laconica
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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://laconi.ca/
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*/
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if (!defined('LACONICA')) {
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exit(1);
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}
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define('RECAPTCHA', '0.2');
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class recaptcha 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 $ssl;
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function __construct($public_key, $private_key, $display_errors=false)
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{
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parent::__construct();
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require_once(INSTALLDIR.'/plugins/recaptcha/recaptchalib.php');
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$this->public_key = $public_key;
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$this->private_key = $private_key;
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$this->display_errors = $display_errors;
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}
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function checkssl(){
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if(common_config('site', 'ssl') === 'sometimes' || common_config('site', 'ssl') === 'always') {
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return true;
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}
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return false;
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}
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function onStartShowHTML($action)
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{
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//XXX: Horrible hack to make Safari, FF2, and Chrome work with
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//reChapcha. reChapcha beaks xhtml strict
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header('Content-Type: text/html');
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$action->extraHeaders();
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$action->startXML('html');
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$action->raw('<style type="text/css">#recaptcha_area{float:left;}</style>');
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return false;
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}
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function onEndRegistrationFormData($action)
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{
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$action->elementStart('li');
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$action->raw('<label for="recaptcha_area">Captcha</label>');
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if($this->checkssl() === true){
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$action->raw(recaptcha_get_html($this->public_key), null, true);
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} else {
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$action->raw(recaptcha_get_html($this->public_key));
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}
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$action->elementEnd('li');
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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 (!$resp->is_valid)
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{
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if($this->display_errors)
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{
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$action->showForm ("(reCAPTCHA said: " . $resp->error . ")");
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}
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$action->showForm("Captcha does not match!");
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return false;
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}
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}
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}
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