forked from GNUsocial/gnu-social
Going to restructure a little more before finalizing this...
This reverts commit fa37967858
.
145 lines
5.0 KiB
PHP
145 lines
5.0 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 check submitted notices with blogspam.net
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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 Evan Prodromou <evan@status.net>
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* @copyright 2009 StatusNet, Inc.
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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')) {
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exit(1);
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}
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define('BLOGSPAMNETPLUGIN_VERSION', '0.1');
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/**
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* Plugin to check submitted notices with blogspam.net
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*
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* When new notices are saved, we check their text with blogspam.net (or
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* a compatible service).
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*
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* Blogspam.net is supposed to catch blog comment spam, and I found that
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* some of its tests (min/max size, bayesian match) gave a lot of false positives.
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* So, I've turned those tests off by default. This may not get as many
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* hits, but it's better than nothing.
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*
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* @category Plugin
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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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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* @see Event
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*/
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class BlogspamNetPlugin extends Plugin
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{
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var $baseUrl = 'http://test.blogspam.net:8888/';
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function __construct($url=null)
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{
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parent::__construct();
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if ($url) {
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$this->baseUrl = $url;
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}
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}
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function onStartNoticeSave($notice)
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{
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$args = $this->testArgs($notice);
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common_debug("Blogspamnet args = " . print_r($args, TRUE));
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$request = xmlrpc_encode_request('testComment', array($args));
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$context = stream_context_create(array('http' => array('method' => "POST",
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'header' =>
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"Content-Type: text/xml\r\n".
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"User-Agent: " . $this->userAgent(),
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'content' => $request)));
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$file = file_get_contents($this->baseUrl, false, $context);
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$response = xmlrpc_decode($file);
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if (xmlrpc_is_fault($response)) {
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throw new ServerException("$response[faultString] ($response[faultCode])", 500);
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} else {
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common_debug("Blogspamnet results = " . $response);
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if (preg_match('/^ERROR(:(.*))?$/', $response, $match)) {
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throw new ServerException(sprintf(_("Error from %s: %s"), $this->baseUrl, $match[2]), 500);
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} else if (preg_match('/^SPAM(:(.*))?$/', $response, $match)) {
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throw new ClientException(sprintf(_("Spam checker results: %s"), $match[2]), 400);
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} else if (preg_match('/^OK$/', $response)) {
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// don't do anything
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} else {
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throw new ServerException(sprintf(_("Unexpected response from %s: %s"), $this->baseUrl, $response), 500);
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}
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}
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return true;
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}
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function testArgs($notice)
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{
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$args = array();
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$args['comment'] = $notice->content;
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$args['ip'] = $this->getClientIP();
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if (isset($_SERVER) && array_key_exists('HTTP_USER_AGENT', $_SERVER)) {
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$args['agent'] = $_SERVER['HTTP_USER_AGENT'];
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}
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$profile = $notice->getProfile();
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if ($profile && $profile->homepage) {
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$args['link'] = $profile->homepage;
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}
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if ($profile && $profile->fullname) {
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$args['name'] = $profile->fullname;
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} else {
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$args['name'] = $profile->nickname;
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}
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$args['site'] = common_root_url();
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$args['version'] = $this->userAgent();
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$args['options'] = "max-size=140,min-size=0,min-words=0,exclude=bayasian";
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return $args;
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}
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function getClientIP()
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{
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if (isset($_SERVER) && array_key_exists('REQUEST_METHOD', $_SERVER)) {
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// Note: order matters here; use proxy-forwarded stuff first
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foreach (array('HTTP_X_FORWARDED_FOR', 'CLIENT-IP', 'REMOTE_ADDR') as $k) {
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if (isset($_SERVER[$k])) {
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return $_SERVER[$k];
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}
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}
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}
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return '127.0.0.1';
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}
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function userAgent()
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{
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return 'BlogspamNetPlugin/'.BLOGSPAMNETPLUGIN_VERSION . ' StatusNet/' . STATUSNET_VERSION;
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}
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}
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