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Diffstat (limited to 'platform/www/inc/Sitemap/Mapper.php')
| -rw-r--r-- | platform/www/inc/Sitemap/Mapper.php | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/platform/www/inc/Sitemap/Mapper.php b/platform/www/inc/Sitemap/Mapper.php new file mode 100644 index 0000000..2f0567f --- /dev/null +++ b/platform/www/inc/Sitemap/Mapper.php @@ -0,0 +1,164 @@ +<?php +/** + * Sitemap handling functions + * + * @license GPL 2 (http://www.gnu.org/licenses/gpl.html) + * @author Michael Hamann <michael@content-space.de> + */ + +namespace dokuwiki\Sitemap; + +use dokuwiki\HTTP\DokuHTTPClient; + +/** + * A class for building sitemaps and pinging search engines with the sitemap URL. + * + * @author Michael Hamann + */ +class Mapper { + /** + * Builds a Google Sitemap of all public pages known to the indexer + * + * The map is placed in the cache directory named sitemap.xml.gz - This + * file needs to be writable! + * + * @author Michael Hamann + * @author Andreas Gohr + * @link https://www.google.com/webmasters/sitemaps/docs/en/about.html + * @link http://www.sitemaps.org/ + * + * @return bool + */ + public static function generate(){ + global $conf; + if($conf['sitemap'] < 1 || !is_numeric($conf['sitemap'])) return false; + + $sitemap = Mapper::getFilePath(); + + if(file_exists($sitemap)){ + if(!is_writable($sitemap)) return false; + }else{ + if(!is_writable(dirname($sitemap))) return false; + } + + if(@filesize($sitemap) && + @filemtime($sitemap) > (time()-($conf['sitemap']*86400))){ // 60*60*24=86400 + dbglog('Sitemapper::generate(): Sitemap up to date'); + return false; + } + + dbglog("Sitemapper::generate(): using $sitemap"); + + $pages = idx_get_indexer()->getPages(); + dbglog('Sitemapper::generate(): creating sitemap using '.count($pages).' pages'); + $items = array(); + + // build the sitemap items + foreach($pages as $id){ + //skip hidden, non existing and restricted files + if(isHiddenPage($id)) continue; + if(auth_aclcheck($id,'',array()) < AUTH_READ) continue; + $item = Item::createFromID($id); + if ($item !== null) + $items[] = $item; + } + + $eventData = array('items' => &$items, 'sitemap' => &$sitemap); + $event = new \dokuwiki\Extension\Event('SITEMAP_GENERATE', $eventData); + if ($event->advise_before(true)) { + //save the new sitemap + $event->result = io_saveFile($sitemap, Mapper::getXML($items)); + } + $event->advise_after(); + + return $event->result; + } + + /** + * Builds the sitemap XML string from the given array auf SitemapItems. + * + * @param $items array The SitemapItems that shall be included in the sitemap. + * @return string The sitemap XML. + * + * @author Michael Hamann + */ + private static function getXML($items) { + ob_start(); + echo '<?xml version="1.0" encoding="UTF-8"?>'.NL; + echo '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">'.NL; + foreach ($items as $item) { + /** @var Item $item */ + echo $item->toXML(); + } + echo '</urlset>'.NL; + $result = ob_get_contents(); + ob_end_clean(); + return $result; + } + + /** + * Helper function for getting the path to the sitemap file. + * + * @return string The path to the sitemap file. + * + * @author Michael Hamann + */ + public static function getFilePath() { + global $conf; + + $sitemap = $conf['cachedir'].'/sitemap.xml'; + if (self::sitemapIsCompressed()) { + $sitemap .= '.gz'; + } + + return $sitemap; + } + + /** + * Helper function for checking if the sitemap is compressed + * + * @return bool If the sitemap file is compressed + */ + public static function sitemapIsCompressed() { + global $conf; + return $conf['compression'] === 'bz2' || $conf['compression'] === 'gz'; + } + + /** + * Pings search engines with the sitemap url. Plugins can add or remove + * urls to ping using the SITEMAP_PING event. + * + * @author Michael Hamann + * + * @return bool + */ + public static function pingSearchEngines() { + //ping search engines... + $http = new DokuHTTPClient(); + $http->timeout = 8; + + $encoded_sitemap_url = urlencode(wl('', array('do' => 'sitemap'), true, '&')); + $ping_urls = array( + 'google' => 'http://www.google.com/webmasters/sitemaps/ping?sitemap='.$encoded_sitemap_url, + 'microsoft' => 'http://www.bing.com/webmaster/ping.aspx?siteMap='.$encoded_sitemap_url, + 'yandex' => 'http://blogs.yandex.ru/pings/?status=success&url='.$encoded_sitemap_url + ); + + $data = array('ping_urls' => $ping_urls, + 'encoded_sitemap_url' => $encoded_sitemap_url + ); + $event = new \dokuwiki\Extension\Event('SITEMAP_PING', $data); + if ($event->advise_before(true)) { + foreach ($data['ping_urls'] as $name => $url) { + dbglog("Sitemapper::PingSearchEngines(): pinging $name"); + $resp = $http->get($url); + if($http->error) dbglog("Sitemapper:pingSearchengines(): $http->error"); + dbglog('Sitemapper:pingSearchengines(): '.preg_replace('/[\n\r]/',' ',strip_tags($resp))); + } + } + $event->advise_after(); + + return true; + } +} + |