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<?php |
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/** |
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* Sitemap handling functions |
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* |
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* @license GPL 2 (http://www.gnu.org/licenses/gpl.html) |
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* @author Michael Hamann <[email protected]> |
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*/ |
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namespace dokuwiki\Sitemap; |
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/** |
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* A class for building sitemaps and pinging search engines with the sitemap URL. |
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* |
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* @author Michael Hamann |
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*/ |
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class Mapper { |
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/** |
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* Builds a Google Sitemap of all public pages known to the indexer |
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* |
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* The map is placed in the cache directory named sitemap.xml.gz - This |
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* file needs to be writable! |
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* |
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* @author Michael Hamann |
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* @author Andreas Gohr |
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* @link https://www.google.com/webmasters/sitemaps/docs/en/about.html |
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* @link http://www.sitemaps.org/ |
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* |
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* @return bool |
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*/ |
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public static function generate(){ |
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global $conf; |
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if($conf['sitemap'] < 1 || !is_numeric($conf['sitemap'])) return false; |
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$sitemap = Mapper::getFilePath(); |
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if(file_exists($sitemap)){ |
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if(!is_writable($sitemap)) return false; |
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}else{ |
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if(!is_writable(dirname($sitemap))) return false; |
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} |
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if(@filesize($sitemap) && |
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@filemtime($sitemap) > (time()-($conf['sitemap']*86400))){ // 60*60*24=86400 |
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dbglog('Sitemapper::generate(): Sitemap up to date'); |
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return false; |
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} |
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dbglog("Sitemapper::generate(): using $sitemap"); |
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$pages = idx_get_indexer()->getPages(); |
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dbglog('Sitemapper::generate(): creating sitemap using '.count($pages).' pages'); |
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$items = array(); |
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// build the sitemap items |
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foreach($pages as $id){ |
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//skip hidden, non existing and restricted files |
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if(isHiddenPage($id)) continue; |
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if(auth_aclcheck($id,'',array()) < AUTH_READ) continue; |
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$item = Item::createFromID($id); |
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if ($item !== null) |
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$items[] = $item; |
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} |
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$eventData = array('items' => &$items, 'sitemap' => &$sitemap); |
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$event = new \Doku_Event('SITEMAP_GENERATE', $eventData); |
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if ($event->advise_before(true)) { |
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//save the new sitemap |
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$event->result = io_saveFile($sitemap, Mapper::getXML($items)); |
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} |
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$event->advise_after(); |
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return $event->result; |
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} |
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/** |
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* Builds the sitemap XML string from the given array auf SitemapItems. |
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* |
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* @param $items array The SitemapItems that shall be included in the sitemap. |
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* @return string The sitemap XML. |
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* |
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* @author Michael Hamann |
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*/ |
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private static function getXML($items) { |
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ob_start(); |
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echo '<?xml version="1.0" encoding="UTF-8"?>'.NL; |
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echo '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">'.NL; |
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foreach ($items as $item) { |
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/** @var Item $item */ |
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echo $item->toXML(); |
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} |
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echo '</urlset>'.NL; |
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$result = ob_get_contents(); |
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ob_end_clean(); |
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return $result; |
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} |
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/** |
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* Helper function for getting the path to the sitemap file. |
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* |
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* @return string The path to the sitemap file. |
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* |
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* @author Michael Hamann |
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*/ |
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public static function getFilePath() { |
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global $conf; |
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$sitemap = $conf['cachedir'].'/sitemap.xml'; |
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if (self::sitemapIsCompressed()) { |
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$sitemap .= '.gz'; |
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} |
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return $sitemap; |
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} |
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/** |
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* Helper function for checking if the sitemap is compressed |
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* |
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* @return bool If the sitemap file is compressed |
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*/ |
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public static function sitemapIsCompressed() { |
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global $conf; |
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return $conf['compression'] === 'bz2' || $conf['compression'] === 'gz'; |
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} |
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/** |
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* Pings search engines with the sitemap url. Plugins can add or remove |
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* urls to ping using the SITEMAP_PING event. |
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* |
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* @author Michael Hamann |
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* |
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* @return bool |
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*/ |
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public static function pingSearchEngines() { |
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//ping search engines... |
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$http = new \DokuHTTPClient(); |
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$http->timeout = 8; |
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$encoded_sitemap_url = urlencode(wl('', array('do' => 'sitemap'), true, '&')); |
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$ping_urls = array( |
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'google' => 'http://www.google.com/webmasters/sitemaps/ping?sitemap='.$encoded_sitemap_url, |
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'microsoft' => 'http://www.bing.com/webmaster/ping.aspx?siteMap='.$encoded_sitemap_url, |
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'yandex' => 'http://blogs.yandex.ru/pings/?status=success&url='.$encoded_sitemap_url |
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); |
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$data = array('ping_urls' => $ping_urls, |
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'encoded_sitemap_url' => $encoded_sitemap_url |
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); |
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$event = new \Doku_Event('SITEMAP_PING', $data); |
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if ($event->advise_before(true)) { |
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foreach ($data['ping_urls'] as $name => $url) { |
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dbglog("Sitemapper::PingSearchEngines(): pinging $name"); |
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$resp = $http->get($url); |
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if($http->error) dbglog("Sitemapper:pingSearchengines(): $http->error"); |
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dbglog('Sitemapper:pingSearchengines(): '.preg_replace('/[\n\r]/',' ',strip_tags($resp))); |
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} |
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} |
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$event->advise_after(); |
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return true; |
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} |
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} |
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