514 lines
19 KiB
PHP
514 lines
19 KiB
PHP
<?php
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/**
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* XML feed export
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*
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* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
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* @author Andreas Gohr <andi@splitbrain.org>
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*
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* @global array $conf
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* @global Input $INPUT
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*/
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if(!defined('DOKU_INC')) define('DOKU_INC', dirname(__FILE__).'/');
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require_once(DOKU_INC.'inc/init.php');
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//close session
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session_write_close();
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//feed disabled?
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if(!actionOK('rss')) {
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http_status(404);
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echo '<error>RSS feed is disabled.</error>';
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exit;
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}
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// get params
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$opt = rss_parseOptions();
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// the feed is dynamic - we need a cache for each combo
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// (but most people just use the default feed so it's still effective)
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$key = join('', array_values($opt)).'$'.$_SERVER['REMOTE_USER'].'$'.$_SERVER['HTTP_HOST'].$_SERVER['SERVER_PORT'];
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$cache = new cache($key, '.feed');
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// prepare cache depends
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$depends['files'] = getConfigFiles('main');
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$depends['age'] = $conf['rss_update'];
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$depends['purge'] = $INPUT->bool('purge');
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// check cacheage and deliver if nothing has changed since last
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// time or the update interval has not passed, also handles conditional requests
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header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
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header('Pragma: public');
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header('Content-Type: application/xml; charset=utf-8');
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header('X-Robots-Tag: noindex');
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if($cache->useCache($depends)) {
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http_conditionalRequest($cache->_time);
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if($conf['allowdebug']) header("X-CacheUsed: $cache->cache");
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print $cache->retrieveCache();
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exit;
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} else {
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http_conditionalRequest(time());
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}
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// create new feed
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$rss = new DokuWikiFeedCreator();
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$rss->title = $conf['title'].(($opt['namespace']) ? ' '.$opt['namespace'] : '');
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$rss->link = DOKU_URL;
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$rss->syndicationURL = DOKU_URL.'feed.php';
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$rss->cssStyleSheet = DOKU_URL.'lib/exe/css.php?s=feed';
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$image = new FeedImage();
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$image->title = $conf['title'];
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$image->url = tpl_getMediaFile(array(':wiki:favicon.ico', ':favicon.ico', 'images/favicon.ico'), true);
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$image->link = DOKU_URL;
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$rss->image = $image;
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$data = null;
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$modes = array(
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'list' => 'rssListNamespace',
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'search' => 'rssSearch',
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'recent' => 'rssRecentChanges'
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);
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if(isset($modes[$opt['feed_mode']])) {
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$data = $modes[$opt['feed_mode']]($opt);
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} else {
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$eventData = array(
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'opt' => &$opt,
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'data' => &$data,
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);
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$event = new Doku_Event('FEED_MODE_UNKNOWN', $eventData);
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if($event->advise_before(true)) {
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echo sprintf('<error>Unknown feed mode %s</error>', hsc($opt['feed_mode']));
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exit;
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}
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$event->advise_after();
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}
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rss_buildItems($rss, $data, $opt);
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$feed = $rss->createFeed($opt['feed_type'], 'utf-8');
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// save cachefile
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$cache->storeCache($feed);
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// finally deliver
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print $feed;
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// ---------------------------------------------------------------- //
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/**
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* Get URL parameters and config options and return an initialized option array
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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*/
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function rss_parseOptions() {
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global $conf;
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global $INPUT;
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$opt = array();
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foreach(array(
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// Basic feed properties
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// Plugins may probably want to add new values to these
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// properties for implementing own feeds
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// One of: list, search, recent
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'feed_mode' => array('str', 'mode', 'recent'),
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// One of: diff, page, rev, current
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'link_to' => array('str', 'linkto', $conf['rss_linkto']),
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// One of: abstract, diff, htmldiff, html
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'item_content' => array('str', 'content', $conf['rss_content']),
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// Special feed properties
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// These are only used by certain feed_modes
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// String, used for feed title, in list and rc mode
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'namespace' => array('str', 'ns', null),
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// Positive integer, only used in rc mode
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'items' => array('int', 'num', $conf['recent']),
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// Boolean, only used in rc mode
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'show_minor' => array('bool', 'minor', false),
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// String, only used in list mode
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'sort' => array('str', 'sort', 'natural'),
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// String, only used in search mode
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'search_query' => array('str', 'q', null),
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// One of: pages, media, both
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'content_type' => array('str', 'view', $conf['rss_media'])
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) as $name => $val) {
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$opt[$name] = $INPUT->{$val[0]}($val[1], $val[2], true);
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}
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$opt['items'] = max(0, (int) $opt['items']);
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$opt['show_minor'] = (bool) $opt['show_minor'];
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$opt['sort'] = valid_input_set('sort', array('default' => 'natural', 'date'), $opt);
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$opt['guardmail'] = ($conf['mailguard'] != '' && $conf['mailguard'] != 'none');
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$type = $INPUT->valid(
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'type',
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array( 'rss', 'rss2', 'atom', 'atom1', 'rss1'),
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$conf['rss_type']
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);
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switch($type) {
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case 'rss':
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$opt['feed_type'] = 'RSS0.91';
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$opt['mime_type'] = 'text/xml';
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break;
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case 'rss2':
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$opt['feed_type'] = 'RSS2.0';
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$opt['mime_type'] = 'text/xml';
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break;
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case 'atom':
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$opt['feed_type'] = 'ATOM0.3';
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$opt['mime_type'] = 'application/xml';
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break;
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case 'atom1':
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$opt['feed_type'] = 'ATOM1.0';
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$opt['mime_type'] = 'application/atom+xml';
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break;
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default:
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$opt['feed_type'] = 'RSS1.0';
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$opt['mime_type'] = 'application/xml';
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}
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$eventData = array(
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'opt' => &$opt,
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);
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trigger_event('FEED_OPTS_POSTPROCESS', $eventData);
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return $opt;
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}
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/**
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* Add recent changed pages to a feed object
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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* @param FeedCreator $rss the FeedCreator Object
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* @param array $data the items to add
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* @param array $opt the feed options
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*/
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function rss_buildItems(&$rss, &$data, $opt) {
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global $conf;
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global $lang;
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/* @var DokuWiki_Auth_Plugin $auth */
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global $auth;
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$eventData = array(
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'rss' => &$rss,
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'data' => &$data,
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'opt' => &$opt,
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);
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$event = new Doku_Event('FEED_DATA_PROCESS', $eventData);
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if($event->advise_before(false)) {
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foreach($data as $ditem) {
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if(!is_array($ditem)) {
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// not an array? then only a list of IDs was given
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$ditem = array('id' => $ditem);
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}
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$item = new FeedItem();
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$id = $ditem['id'];
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if(!$ditem['media']) {
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$meta = p_get_metadata($id);
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} else {
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$meta = array();
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}
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// add date
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if($ditem['date']) {
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$date = $ditem['date'];
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} elseif ($ditem['media']) {
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$date = @filemtime(mediaFN($id));
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} elseif (file_exists(wikiFN($id))) {
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$date = @filemtime(wikiFN($id));
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} elseif($meta['date']['modified']) {
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$date = $meta['date']['modified'];
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} else {
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$date = 0;
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}
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if($date) $item->date = date('r', $date);
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// add title
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if($conf['useheading'] && $meta['title']) {
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$item->title = $meta['title'];
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} else {
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$item->title = $ditem['id'];
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}
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if($conf['rss_show_summary'] && !empty($ditem['sum'])) {
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$item->title .= ' - '.strip_tags($ditem['sum']);
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}
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// add item link
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switch($opt['link_to']) {
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case 'page':
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if($ditem['media']) {
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$item->link = media_managerURL(
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array(
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'image' => $id,
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'ns' => getNS($id),
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'rev' => $date
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), '&', true
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);
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} else {
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$item->link = wl($id, 'rev='.$date, true, '&');
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}
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break;
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case 'rev':
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if($ditem['media']) {
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$item->link = media_managerURL(
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array(
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'image' => $id,
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'ns' => getNS($id),
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'rev' => $date,
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'tab_details' => 'history'
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), '&', true
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);
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} else {
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$item->link = wl($id, 'do=revisions&rev='.$date, true, '&');
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}
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break;
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case 'current':
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if($ditem['media']) {
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$item->link = media_managerURL(
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array(
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'image' => $id,
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'ns' => getNS($id)
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), '&', true
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);
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} else {
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$item->link = wl($id, '', true, '&');
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}
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break;
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case 'diff':
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default:
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if($ditem['media']) {
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$item->link = media_managerURL(
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array(
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'image' => $id,
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'ns' => getNS($id),
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'rev' => $date,
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'tab_details' => 'history',
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'mediado' => 'diff'
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), '&', true
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);
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} else {
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$item->link = wl($id, 'rev='.$date.'&do=diff', true, '&');
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}
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}
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// add item content
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switch($opt['item_content']) {
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case 'diff':
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case 'htmldiff':
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if($ditem['media']) {
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$medialog = new MediaChangeLog($id);
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$revs = $medialog->getRevisions(0, 1);
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$rev = $revs[0];
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$src_r = '';
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$src_l = '';
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if($size = media_image_preview_size($id, '', new JpegMeta(mediaFN($id)), 300)) {
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$more = 'w='.$size[0].'&h='.$size[1].'&t='.@filemtime(mediaFN($id));
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$src_r = ml($id, $more, true, '&', true);
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}
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if($rev && $size = media_image_preview_size($id, $rev, new JpegMeta(mediaFN($id, $rev)), 300)) {
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$more = 'rev='.$rev.'&w='.$size[0].'&h='.$size[1];
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$src_l = ml($id, $more, true, '&', true);
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}
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$content = '';
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if($src_r) {
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$content = '<table>';
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$content .= '<tr><th width="50%">'.$rev.'</th>';
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$content .= '<th width="50%">'.$lang['current'].'</th></tr>';
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$content .= '<tr align="center"><td><img src="'.$src_l.'" alt="" /></td><td>';
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$content .= '<img src="'.$src_r.'" alt="'.$id.'" /></td></tr>';
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$content .= '</table>';
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}
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} else {
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require_once(DOKU_INC.'inc/DifferenceEngine.php');
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$pagelog = new PageChangeLog($id);
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$revs = $pagelog->getRevisions(0, 1);
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$rev = $revs[0];
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if($rev) {
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$df = new Diff(explode("\n", rawWiki($id, $rev)),
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explode("\n", rawWiki($id, '')));
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} else {
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$df = new Diff(array(''),
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explode("\n", rawWiki($id, '')));
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}
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if($opt['item_content'] == 'htmldiff') {
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// note: no need to escape diff output, TableDiffFormatter provides 'safe' html
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$tdf = new TableDiffFormatter();
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$content = '<table>';
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$content .= '<tr><th colspan="2" width="50%">'.$rev.'</th>';
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$content .= '<th colspan="2" width="50%">'.$lang['current'].'</th></tr>';
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$content .= $tdf->format($df);
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$content .= '</table>';
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} else {
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// note: diff output must be escaped, UnifiedDiffFormatter provides plain text
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$udf = new UnifiedDiffFormatter();
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$content = "<pre>\n".hsc($udf->format($df))."\n</pre>";
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}
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}
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break;
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case 'html':
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if($ditem['media']) {
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if($size = media_image_preview_size($id, '', new JpegMeta(mediaFN($id)))) {
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$more = 'w='.$size[0].'&h='.$size[1].'&t='.@filemtime(mediaFN($id));
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$src = ml($id, $more, true, '&', true);
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$content = '<img src="'.$src.'" alt="'.$id.'" />';
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} else {
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$content = '';
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}
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} else {
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if (@filemtime(wikiFN($id)) === $date) {
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$content = p_wiki_xhtml($id, '', false);
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} else {
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$content = p_wiki_xhtml($id, $date, false);
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}
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// no TOC in feeds
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$content = preg_replace('/(<!-- TOC START -->).*(<!-- TOC END -->)/s', '', $content);
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// add alignment for images
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$content = preg_replace('/(<img .*?class="medialeft")/s', '\\1 align="left"', $content);
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$content = preg_replace('/(<img .*?class="mediaright")/s', '\\1 align="right"', $content);
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// make URLs work when canonical is not set, regexp instead of rerendering!
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if(!$conf['canonical']) {
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$base = preg_quote(DOKU_REL, '/');
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$content = preg_replace('/(<a href|<img src)="('.$base.')/s', '$1="'.DOKU_URL, $content);
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}
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}
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break;
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case 'abstract':
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default:
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if($ditem['media']) {
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if($size = media_image_preview_size($id, '', new JpegMeta(mediaFN($id)))) {
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$more = 'w='.$size[0].'&h='.$size[1].'&t='.@filemtime(mediaFN($id));
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$src = ml($id, $more, true, '&', true);
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$content = '<img src="'.$src.'" alt="'.$id.'" />';
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} else {
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$content = '';
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}
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} else {
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$content = $meta['description']['abstract'];
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}
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}
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$item->description = $content; //FIXME a plugin hook here could be senseful
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// add user
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# FIXME should the user be pulled from metadata as well?
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$user = @$ditem['user']; // the @ spares time repeating lookup
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$item->author = '';
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if($user && $conf['useacl'] && $auth) {
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$userInfo = $auth->getUserData($user);
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if($userInfo) {
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switch($conf['showuseras']) {
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case 'username':
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case 'username_link':
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$item->author = $userInfo['name'];
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break;
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default:
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$item->author = $user;
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break;
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}
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} else {
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$item->author = $user;
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}
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if($userInfo && !$opt['guardmail']) {
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$item->authorEmail = $userInfo['mail'];
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} else {
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//cannot obfuscate because some RSS readers may check validity
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$item->authorEmail = $user.'@'.$ditem['ip'];
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}
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} elseif($user) {
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// this happens when no ACL but some Apache auth is used
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$item->author = $user;
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$item->authorEmail = $user.'@'.$ditem['ip'];
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} else {
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$item->authorEmail = 'anonymous@'.$ditem['ip'];
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}
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// add category
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if(isset($meta['subject'])) {
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$item->category = $meta['subject'];
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} else {
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$cat = getNS($id);
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if($cat) $item->category = $cat;
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}
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// finally add the item to the feed object, after handing it to registered plugins
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$evdata = array(
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'item' => &$item,
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'opt' => &$opt,
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'ditem' => &$ditem,
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'rss' => &$rss
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);
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$evt = new Doku_Event('FEED_ITEM_ADD', $evdata);
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if($evt->advise_before()) {
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$rss->addItem($item);
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}
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$evt->advise_after(); // for completeness
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}
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}
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$event->advise_after();
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}
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/**
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* Add recent changed pages to the feed object
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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*/
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function rssRecentChanges($opt) {
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global $conf;
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$flags = RECENTS_SKIP_DELETED;
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if(!$opt['show_minor']) $flags += RECENTS_SKIP_MINORS;
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if($opt['content_type'] == 'media' && $conf['mediarevisions']) $flags += RECENTS_MEDIA_CHANGES;
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if($opt['content_type'] == 'both' && $conf['mediarevisions']) $flags += RECENTS_MEDIA_PAGES_MIXED;
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$recents = getRecents(0, $opt['items'], $opt['namespace'], $flags);
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return $recents;
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}
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/**
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* Add all pages of a namespace to the feed object
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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*/
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function rssListNamespace($opt) {
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require_once(DOKU_INC.'inc/search.php');
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global $conf;
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$ns = ':'.cleanID($opt['namespace']);
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$ns = utf8_encodeFN(str_replace(':', '/', $ns));
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$data = array();
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$search_opts = array(
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'depth' => 1,
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'pagesonly' => true,
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'listfiles' => true
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);
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search($data, $conf['datadir'], 'search_universal', $search_opts, $ns, $lvl = 1, $opt['sort']);
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return $data;
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}
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/**
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* Add the result of a full text search to the feed object
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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*/
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function rssSearch($opt) {
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if(!$opt['search_query']) return array();
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require_once(DOKU_INC.'inc/fulltext.php');
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$data = ft_pageSearch($opt['search_query'], $poswords);
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$data = array_keys($data);
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return $data;
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}
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//Setup VIM: ex: et ts=4 :
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