458 lines
17 KiB
PHP
458 lines
17 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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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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// get params
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$opt = rss_parseOptions();
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// the feed is dynamic - we need a cache for each combo
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// (but most people just use the default feed so it's still effective)
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$cache = getCacheName(join('',array_values($opt)).$_SERVER['REMOTE_USER'],'.feed');
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$key = join('', array_values($opt)) . $_SERVER['REMOTE_USER'];
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$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'] = isset($_REQUEST['purge']);
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// check cacheage and deliver if nothing has changed since last
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// time or the update interval has not passed, also handles conditional requests
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header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
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header('Pragma: public');
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header('Content-Type: application/xml; charset=utf-8');
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header('X-Robots-Tag: noindex');
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if($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_getFavicon(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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$modes = array('list' => 'rssListNamespace',
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'search' => 'rssSearch',
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'recent' => 'rssRecentChanges');
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if (isset($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 $conf;
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$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('mode', 'recent'),
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// One of: diff, page, rev, current
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'link_to' => array('linkto', $conf['rss_linkto']),
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// One of: abstract, diff, htmldiff, html
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'item_content' => array('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('ns', null),
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// Positive integer, only used in rc mode
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'items' => array('num', $conf['recent']),
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// Boolean, only used in rc mode
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'show_minor' => array('minor', false),
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// String, only used in search mode
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'search_query' => array('q', null),
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// One of: pages, media, both
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'content_type' => array('view', 'both')
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) as $name => $val) {
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$opt[$name] = (isset($_REQUEST[$val[0]]) && !empty($_REQUEST[$val[0]]))
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? $_REQUEST[$val[0]] : $val[1];
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}
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$opt['items'] = max(0, (int) $opt['items']);
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$opt['show_minor'] = (bool) $opt['show_minor'];
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$opt['guardmail'] = ($conf['mailguard'] != '' && $conf['mailguard'] != 'none');
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$type = valid_input_set('type', array('rss','rss2','atom','atom1','rss1',
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'default' => $conf['rss_type']),
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$_REQUEST);
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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 object $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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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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}
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// add date
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if($ditem['date']){
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$date = $ditem['date'];
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}elseif($meta['date']['modified']){
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$date = $meta['date']['modified'];
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}else{
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$date = @filemtime(wikiFN($id));
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}
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if($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(array('image' => $id,
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'ns' => getNS($id),
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'rev' => $date), '&', true);
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} else {
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$item->link = wl($id,'rev='.$date,true,'&', 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(array('image' => $id,
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'ns' => getNS($id),
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'rev' => $date,
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'tab_details' => 'history'), '&', true);
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} else {
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$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(array('image' => $id,
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'ns' => getNS($id)), '&', true);
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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(array('image' => $id,
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'ns' => getNS($id),
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'rev' => $date,
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'tab_details' => 'history',
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'mediado' => 'diff'), '&', true);
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} else {
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$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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$revs = getRevisions($id, 0, 1, 8192, true);
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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($id, false, new JpegMeta(mediaFN($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, $more);
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}
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if ($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, $more);
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}
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$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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$revs = getRevisions($id, 0, 1);
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$rev = $revs[0];
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if($rev){
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$df = new Diff(explode("\n",htmlspecialchars(rawWiki($id,$rev))),
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explode("\n",htmlspecialchars(rawWiki($id,''))));
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}else{
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$df = new Diff(array(''),
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explode("\n",htmlspecialchars(rawWiki($id,''))));
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}
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if($opt['item_content'] == 'htmldiff'){
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$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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$content .= '</table>';
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}else{
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$udf = new UnifiedDiffFormatter();
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$content = "<pre>\n".$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, false, 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, $more);
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$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 = p_wiki_xhtml($id,$date,false);
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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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// 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($id, false, new JpegMeta(mediaFN($id)))) {
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$more = 'w='.$size[0].'&h='.$size[1].'t='.@filemtime(mediaFN($id));
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$src = ml($id, $more);
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$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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$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('item' => &$item,
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'opt' => &$opt,
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'ditem' => &$ditem,
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'rss' => &$rss);
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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=str_replace(':','/',$ns);
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$data = array();
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sort($data);
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search($data,$conf['datadir'],'search_list','',$ns);
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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(!$opt['search_query']) return;
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require_once(DOKU_INC.'inc/fulltext.php');
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$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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