0
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<?php
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/*
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Plugin Name: RSS Backend
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Plugin URI: http://enano.homelinux.org/Feed_me
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Description: Provides the page Special:RSS, which is used to generate RSS feeds of site and page content changes.
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Author: Dan Fuhry
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Version: 1.0
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Author URI: http://enano.homelinux.org/
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*/
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/*
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* Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
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* Version 1.0 release candidate 2
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* Copyright (C) 2006-2007 Dan Fuhry
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*
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* This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2 of the License, or (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, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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*/
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global $db, $session, $paths, $template, $plugins; // Common objects
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$plugins->attachHook('base_classes_initted', '
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$paths->add_page(Array(
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\'name\'=>\'RSS Feed - Latest changes\',
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\'urlname\'=>\'RSS\',
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\'namespace\'=>\'Special\',
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\'special\'=>0,\'visible\'=>0,\'comments_on\'=>0,\'protected\'=>1,\'delvotes\'=>0,\'delvote_ips\'=>\'\',
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));
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');
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$plugins->attachHook('session_started', '__enanoRSSAttachHTMLHeaders();');
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function __enanoRSSAttachHTMLHeaders()
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{
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global $db, $session, $paths, $template, $plugins; // Common objects
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$template->add_header('<link rel="alternate" title="'.getConfig('site_name').' Changes feed" href="'.makeUrlNS('Special', 'RSS/recent', null, true).'" type="application/rss+xml" />');
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$template->add_header('<link rel="alternate" title="'.getConfig('site_name').' Comments feed" href="'.makeUrlNS('Special', 'RSS/comments', null, true).'" type="application/rss+xml" />');
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}
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define('ENANO_FEEDBURNER_INCLUDED', true);
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/**
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* Class for easily generating RSS feeds.
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* @package Enano
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* @subpackage Feed Me
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* @license GNU General Public License <http://www.gnu.org/licenses/gpl.html>
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*/
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class RSS
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{
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/**
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* List of channels contained in this feed.
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* @var array
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*/
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var $channels = Array();
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/**
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* The channel that's currently being operated on
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* @var array
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*/
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var $this_channel = Array();
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/**
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* GUID of the current channel
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* @var string
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*/
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var $this_guid = '';
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/**
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* List of fully XML-formatted feed entries.
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* @var array
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*/
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var $items = Array();
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/**
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* Constructor.
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* @param string Feed title
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* @param string Feed description
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* @param string Linkback
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* @param string Generator
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* @param string E-mail of webmaster
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*/
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function __construct($title = false, $desc = false, $link = false, $gen = false, $email = false)
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{
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$this->create_channel($title, $desc, $link, $gen, $email);
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}
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/**
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* PHP 4 constructor.
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*/
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function RSS($title = false, $desc = false, $link = false, $gen = false, $email = false)
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{
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$this->__construct($title, $desc, $link, $gen, $email);
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}
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/**
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* Creates a new channel.
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*/
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function create_channel($title = false, $desc = false, $link = false, $gen = false, $email = false)
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{
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if ( empty($title) )
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$title = 'Untitled feed';
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else
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$title = htmlspecialchars($title);
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if ( empty($desc) )
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$desc = 'Test feed';
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else
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$desc = htmlspecialchars($desc);
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if ( empty($link) )
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$link = 'http' . ( isset($_SERVER['HTTPS']) ? 's' : '' ) . '://'.$_SERVER['HTTP_HOST'] . scriptPath . '/';
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else
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$link = htmlspecialchars($link);
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if ( !empty($gen) )
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$gen = htmlspecialchars($gen);
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else
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$gen = 'Enano CMS ' . enano_version();
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if ( !empty($email) )
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$email = htmlspecialchars($email);
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else
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$email = getConfig('contact_email');
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$this->channels = Array();
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$guid = md5(microtime() . mt_rand());
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$this->channels[$guid] = Array(
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'title' => $title,
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'link' => $link,
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'gen' => $gen,
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'email' => $email,
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'lang' => 'en-us',
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'items' => Array()
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);
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$this->this_channel =& $this->channels[$guid];
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$this->this_guid = $guid;
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return $guid;
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}
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/**
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* Selects a specific channel to add items to
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* @param string The GUID of the channel
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*/
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function select_channel($guid)
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{
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if ( isset($this->channels[$guid]) )
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{
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$this->this_channel =& $this->channels[$guid];
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$this->guid = $guid;
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}
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}
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/**
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* Adds a news item.
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* @param string Title of the feed entry
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* @param string Link to where more information can be found
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* @param string Short description or content area
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* @param string Date the item was published. If this is a UNIX timestamp it will be formatted with date().
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* @param string A Globally-Unique Identifier (GUID) for this item. Doesn't have to be a 128-bit hash - usually it's a link. If one is not provided, one is generated based on the first three parameters.
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*/
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function add_item($title, $link, $desc, $pubdate, $guid = false)
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{
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$title = htmlspecialchars($title);
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$link = htmlspecialchars($link);
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$desc = '<![CDATA[ ' . str_replace(']]>', ']]>', $desc) . ']]>';
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if ( is_int($pubdate) || ( !is_int($pub_date) && preg_match('/^([0-9]+)$/', $pubdate) ) )
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{
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$pubdate = date('D, d M Y H:i:s T', intval($pubdate));
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}
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if ( !$guid )
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{
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$guid = md5 ( $title . $link . $desc . $pubdate );
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$sec1 = substr($guid, 0, 8);
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$sec2 = substr($guid, 8, 4);
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$sec3 = substr($guid, 12, 4);
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$sec4 = substr($guid, 16, 4);
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$sec5 = substr($guid, 20, 12);
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$guid = sprintf('%s-%s-%s-%s-%s', $sec1, $sec2, $sec3, $sec4, $sec5);
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}
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$xml = " <item>
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<title>$title</title>
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<link>$link</link>
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<description>
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$desc
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</description>
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<pubDate>$pubdate</pubDate>
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<guid>$guid</guid>
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</item>";
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$this->this_channel['items'][] = $xml;
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}
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/**
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* Converts everything into the final RSS feed.
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* @param bool If true, XML headers ("<?xml version="1.0" encoding="utf-8" ?>") are included. Defaults to true.
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* @return string
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*/
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function render($headers = true)
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{
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$xml = '';
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if ( $headers )
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// The weird quotes are because of a jEdit syntax highlighting bug
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$xml .= "<?xml version=".'"'."1.0".'"'." encoding=".'"'."utf-8".'"'." ?>\n";
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$xml .= "<rss version=".'"'."2.0".'"'.">\n";
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foreach ( $this->channels as $channel )
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{
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$xml .= " <channel>
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<title>{$channel['title']}</title>
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<link>{$channel['link']}</link>
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<description>{$channel['desc']}</description>
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<generator>{$channel['gen']}</generator>
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<webMaster>{$channel['email']}</webMaster>
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<language>{$channel['lang']}</language>
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";
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$content = implode("\n", $channel['items']) . "\n";
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$xml .= $content;
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$xml .= " </channel>";
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$xml .= "
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</rss>";
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}
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return $xml;
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}
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}
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// function names are IMPORTANT!!! The name pattern is: page_<namespace ID>_<page URLname, without namespace>
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function page_Special_RSS() {
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global $db, $session, $paths, $template, $plugins; // Common objects
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header('Content-type: text/xml; charset=windows-1252'); //application/rss+xml');
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$mode = $paths->getParam(0);
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$n = $paths->getParam(1);
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if(!preg_match('#^([0-9]+)$#', $n) || (int)$n > 50) $n = 20;
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else $n = (int)$n;
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switch($mode)
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{
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case "recent":
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case false:
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$title = getConfig('site_name') . ' Recent Changes';
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$desc = getConfig('site_desc');
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$rss = new RSS($title, $desc);
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$q = $db->sql_query('SELECT * FROM '.table_prefix.'logs WHERE log_type=\'page\' ORDER BY time_id DESC LIMIT '.$n.';');
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if(!$q)
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{
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$rss->add_item('ERROR', '', 'Error selecting log data: ' . mysql_error() . '', time());
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}
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else
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{
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while($row = $db->fetchrow())
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{
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$link = 'http' . ( isset($_SERVER['HTTPS']) ? 's' : '' ) . '://'.$_SERVER['HTTP_HOST'] . makeUrlNS($row['namespace'], $row['page_id']);
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$title = $paths->pages[$paths->nslist[$row['namespace']].$row['page_id']]['name'];
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$desc = ( $row['edit_summary'] != '' ) ? $row['edit_summary'] : 'No edit summary given.';
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$date = $row['time_id'];
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$guid = 'http' . ( isset($_SERVER['HTTPS']) ? 's' : '' ) . '://'.$_SERVER['HTTP_HOST'] . makeUrlNS($row['namespace'], $row['page_id']).'?oldid='.$row['time_id'];
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$rss->add_item($title, $link, $desc, $date, $guid);
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}
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}
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echo $rss->render();
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break;
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case "comments":
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$title = getConfig('site_name') . ' Latest Comments';
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$desc = getConfig('site_desc');
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$rss = new RSS($title, $desc);
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$q = $db->sql_query('SELECT * FROM '.table_prefix.'comments ORDER BY time DESC LIMIT '.$n.';');
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if(!$q)
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{
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$rss->add_item('ERROR', '', 'Error selecting log data: ' . mysql_error() . '', time());
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}
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else
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{
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$n = $db->numrows();
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//echo '<!-- Number of rows: '.$n.' -->'; // ."\n<!-- SQL backtrace: \n\n".$db->sql_backtrace().' -->';
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for ( $j = 0; $j < $n; $j++ )
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{
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$row = $db->fetchrow($q);
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if(!is_array($row)) die(__FILE__.':'.__LINE__.' $row is not an array');
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$link = 'http' . ( isset($_SERVER['HTTPS']) ? 's' : '' ) . '://'.$_SERVER['HTTP_HOST'] . makeUrlNS($row['namespace'], $row['page_id']).'#comments';
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$page = ( isset($paths->pages[$paths->nslist[$row['namespace']].$row['page_id']]) ) ? $paths->pages[$paths->nslist[$row['namespace']].$row['page_id']]['name'] : $paths->nslist[$row['namespace']].$row['page_id'];
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$title = $row['subject'] . ': Posted on page "'.$page.'" by user '.$row['name'];
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$desc = RenderMan::render($row['comment_data']);
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$date = $row['time'];
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$guid = 'http' . ( isset($_SERVER['HTTPS']) ? 's' : '' ) . '://'.$_SERVER['HTTP_HOST'] . makeUrlNS($row['namespace'], $row['page_id']).'?do=comments&comment='.$row['time'];
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$rss->add_item($title, $link, $desc, $date, $guid);
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}
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}
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echo $rss->render();
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break;
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default:
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$code = $plugins->setHook('feed_me_request');
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foreach ( $code as $cmd )
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{
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eval($cmd);
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}
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break;
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}
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}
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?>