328 lines
10 KiB
PHP
328 lines
10 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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require_once(DOKU_INC.'inc/common.php');
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require_once(DOKU_INC.'inc/events.php');
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require_once(DOKU_INC.'inc/parserutils.php');
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require_once(DOKU_INC.'inc/feedcreator.class.php');
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require_once(DOKU_INC.'inc/auth.php');
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require_once(DOKU_INC.'inc/pageutils.php');
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require_once(DOKU_INC.'inc/httputils.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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$cmod = @filemtime($cache); // 0 if not exists
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if ($cmod && (@filemtime(DOKU_CONF.'local.php')>$cmod || @filemtime(DOKU_CONF.'dokuwiki.php')>$cmod)) {
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// ignore cache if feed prefs may have changed
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$cmod = 0;
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}
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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($cmod && (($cmod+$conf['rss_update']>time()) || ($cmod>@filemtime($conf['changelog'])))){
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http_conditionalRequest($cmod);
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if($conf['allowdebug']) header("X-CacheUsed: $cache");
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print io_readFile($cache);
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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 = DOKU_URL."lib/images/favicon.ico";
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$image->link = DOKU_URL;
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$rss->image = $image;
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if($opt['feed_mode'] == 'list'){
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rssListNamespace($rss,$opt);
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}elseif($opt['feed_mode'] == 'search'){
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rssSearch($rss,$opt);
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}else{
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rssRecentChanges($rss,$opt);
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}
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$feed = $rss->createFeed($opt['feed_type'],'utf-8');
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// save cachefile
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io_saveFile($cache,$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 a 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['items'] = (int) $_REQUEST['num'];
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$opt['feed_type'] = $_REQUEST['type'];
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$opt['feed_mode'] = $_REQUEST['mode'];
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$opt['show_minor'] = $_REQUEST['minor'];
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$opt['namespace'] = $_REQUEST['ns'];
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$opt['link_to'] = $_REQUEST['linkto'];
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$opt['item_content'] = $_REQUEST['content'];
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$opt['search_query'] = $_REQUEST['q'];
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if(!$opt['feed_type']) $opt['feed_type'] = $conf['rss_type'];
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if(!$opt['item_content']) $opt['item_content'] = $conf['rss_content'];
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if(!$opt['link_to']) $opt['link_to'] = $conf['rss_linkto'];
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if(!$opt['items']) $opt['items'] = $conf['recent'];
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$opt['guardmail'] = ($conf['mailguard'] != '' && $conf['mailguard'] != 'none');
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switch ($opt['feed_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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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 $auth;
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foreach($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 = $ditem['id'];
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$meta = p_get_metadata($id);
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// add date
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if($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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$item->link = wl($id,'rev='.$date,true,'&');
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break;
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case 'rev':
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$item->link = wl($id,'do=revisions&rev='.$date,true,'&');
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break;
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case 'current':
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$item->link = wl($id, '', true,'&');
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break;
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case 'diff':
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default:
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$item->link = wl($id,'rev='.$date.'&do=diff',true,'&');
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}
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// add item content
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switch ($opt['item_content']){
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case 'diff':
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case 'htmldiff':
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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($df)."\n</pre>";
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}
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break;
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case 'html':
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$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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break;
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case 'abstract':
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default:
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$content = $meta['description']['abstract'];
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}
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$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 = null;
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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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$item->author = $userInfo['name'];
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if($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 = $user.'@'.$recent['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 = $user.'@'.$recent['ip'];
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}else{
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$item->authorEmail = 'anonymous@'.$recent['ip'];
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}
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// add category
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if($meta['subject']){
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$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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$evt->advise_after(); // for completeness
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}
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}
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/**
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* Add recent changed pages to the feed object
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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*/
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function rssRecentChanges(&$rss,$opt){
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global $conf;
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global $auth;
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$flags = RECENTS_SKIP_DELETED;
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if(!$opt['show_minor']) $flags += RECENTS_SKIP_MINORS;
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$recents = getRecents(0,$opt['items'],$opt['namespace'],$flags);
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rss_buildItems($rss,$recents,$opt);
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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(&$rss,$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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rss_buildItems($rss,$data,$opt);
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}
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/**
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* Add the result of a full text search to the feed object
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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*/
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function rssSearch(&$rss,$opt){
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if(!$opt['search_query']) return;
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require_once(DOKU_INC.'inc/fulltext.php');
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$data = array();
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$data = ft_pageSearch($opt['search_query'],$poswords);
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$data = array_keys($data);
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rss_buildItems($rss,$data,$opt);
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}
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//Setup VIM: ex: et ts=4 enc=utf-8 :
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