<?php
/**
* @brief Sitemap generator Class
* @author <a href='https://www.invisioncommunity.com'>Invision Power Services, Inc.</a>
* @copyright (c) Invision Power Services, Inc.
* @license https://www.invisioncommunity.com/legal/standards/
* @package Invision Community
* @since 29 Aug 2013
*/
namespace IPS;
/* To prevent PHP errors (extending class does not exist) revealing path */
if ( !defined( '\IPS\SUITE_UNIQUE_KEY' ) )
{
header( ( isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0' ) . ' 403 Forbidden' );
exit;
}
/**
* Sitemap generator class
*/
class _Sitemap
{
/**
* @brief Maximum number of entries to include per file
*/
const MAX_PER_FILE = 500;
/**
* @brief Count options
*/
public static $counts = array( 0 => 0, 100 => 100, 500 => 500, 1000 => 1000, 5000 => 5000, 10000 => 10000 );
/**
* @brief Priority options
*/
public static $priorities = array( '1.0' => '1.0', '0.9' => '0.9', '0.8' => '0.8', '0.7' => '0.7', '0.6' => '0.6', '0.5' => '0.5', '0.4' => '0.4', '0.3' => '0.3', '0.2' => '0.2', '0.1' => '0.1' );
/**
* @brief "Log" entries for this execution
*/
public $log = array();
/**
* @brief URL to our sitemap index file
*/
public $sitemapUrl = '';
/**
* Constructor
*
* @return void
*/
public function __construct()
{
/* Figure out the sitemap URL */
$this->sitemapUrl = ( \IPS\Settings::i()->sitemap_url ) ? rtrim( \IPS\Settings::i()->sitemap_url, '/' ) : rtrim( \IPS\Settings::i()->base_url, '/' ) . '/sitemap.php';
}
/**
* Build the sitemap index file
*
* @return void
*/
public function buildNextSitemap()
{
/* Figure out supported sitemap files */
$files = array();
$extensions = \IPS\Application::allExtensions( 'core', 'Sitemap', new \IPS\Member, 'core' );
foreach ( $extensions as $extension )
{
$files = array_merge( $files, $extension->getFilenames() );
}
/* Delete any that aren't supported */
\IPS\Db::i()->delete( 'core_sitemap', \IPS\Db::i()->in( 'sitemap', $files, TRUE ) );
/* Now figure out which one hasn't run in the longest period of time. */
$sitemapsNotBuilt = array_diff( $files, iterator_to_array( \IPS\Db::i()->select( 'sitemap', 'core_sitemap' ) ) );
if ( count( $sitemapsNotBuilt ) )
{
$toBuild = array_shift( $sitemapsNotBuilt );
}
else
{
try
{
$toBuild = \IPS\Db::i()->select( 'sitemap', 'core_sitemap', NULL, 'updated ASC', 1 )->first();
}
catch ( \UnderflowException $e ) { }
}
/* Do it */
if( $toBuild )
{
/* Call the plugin to generate this sitemap file */
foreach( $extensions as $extension )
{
if( in_array( $toBuild, $extension->getFilenames() ) )
{
$extension->generateSitemap( $toBuild, $this );
}
}
/* And ping search engines */
$this->pingSearchEngines();
}
}
/**
* Build a sitemap file and store it
*
* @param string $filename Filename
* @param array $entries The entries to add. Each entry should be an array with at least the key 'url'. Optional keys 'lastmod', 'priority' and 'changefreq' are also supported.
* @param int $lastId The last ID we built. This is used for content items to allow us to more efficiently fetch the next batch of items to build.
* @param array $namespaces Array of additional namespaces to define
* @return void
*/
public function buildSitemapFile( $filename, $entries, $lastId=0, $namespaces=array() )
{
/* Start XML Document, set encoding, and create the namespaced index element */
$xmlWriter = new \XMLWriter();
$xmlWriter->openMemory();
$xmlWriter->setIndent( TRUE );
$xmlWriter->startDocument( '1.0', 'UTF-8' );
$xmlWriter->startElementNS( NULL, 'urlset', "http://www.sitemaps.org/schemas/sitemap/0.9" );
if( count( $namespaces ) )
{
foreach( $namespaces as $prefix => $urn )
{
$xmlWriter->writeAttributeNS( 'xmlns', $prefix, NULL, $urn );
}
}
$defaultLanguage = \IPS\Lang::load( \IPS\Lang::defaultLanguage() );
if( count( $entries ) )
{
foreach( $entries as $entry )
{
$xmlWriter->startElement( 'url' );
$xmlWriter->startElement( 'loc' );
$xmlWriter->text( preg_replace( '/^' . preg_quote( \IPS\Settings::i()->base_url, '/' ) . '/', '{base_url}', $entry['url'] ) );
$xmlWriter->endElement();
if( isset( $entry['lastmod'] ) AND $entry['lastmod'] )
{
$xmlWriter->startElement( 'lastmod' );
$xmlWriter->text( ( $entry['lastmod'] instanceof \IPS\DateTime ) ? $entry['lastmod']->format( 'c', $defaultLanguage ) : \IPS\DateTime::ts( $entry['lastmod'] )->format( 'c', $defaultLanguage ) );
$xmlWriter->endElement();
}
if( isset( $entry['priority'] ) AND $entry['priority'] )
{
$xmlWriter->startElement( 'priority' );
$xmlWriter->text( $entry['priority'] );
$xmlWriter->endElement();
}
if( isset( $entry['changefreq'] ) AND $entry['changefreq'] )
{
$xmlWriter->startElement( 'changefreq' );
$xmlWriter->text( $entry['changefreq'] );
$xmlWriter->endElement();
}
if( count( $namespaces ) )
{
foreach( $entry as $key => $value )
{
foreach( $namespaces as $prefix => $urn )
{
if( mb_strpos( $key, $prefix . ':' ) === 0 )
{
$pieces = explode( ':', $key );
$xmlWriter->startElementNS( $pieces[0], $pieces[1], NULL );
foreach( $value as $k => $v )
{
$pieces = explode( ':', $k );
$xmlWriter->startElementNS( $pieces[0], $pieces[1], NULL );
if( is_array( $v ) )
{
foreach( $v as $index => $value )
{
if( $index !== 0 )
{
$xmlWriter->writeAttribute( $index, $value );
}
}
$xmlWriter->text( $v[0] );
}
else
{
$xmlWriter->text( $v );
}
$xmlWriter->endElement();
}
$xmlWriter->endElement();
}
}
}
}
$xmlWriter->endElement();
}
/* End the XML document */
$xmlWriter->endElement();
$xmlWriter->endDocument();
$content = $xmlWriter->outputMemory( TRUE );
}
else
{
$content = NULL;
}
/* Store */
\IPS\Db::i()->replace( 'core_sitemap', array(
'sitemap' => $filename,
'data' => $content,
'updated' => time(),
'last_id' => $lastId
) );
}
/**
* Ping search engines to notify of updates
*
* @return void
* @note Yahoo! search is being replaced by Bing and ask.com/moreover.com no longer accept sitemap submissions
*/
public function pingSearchEngines()
{
/* Search engines don't want to receive more than one ping in a 24 hour period */
if( \IPS\Settings::i()->sitemap_last_ping > time() - 86400 )
{
$this->log[] = 'sitemap_ping_already24';
return;
}
/* Update last ping time before the requests are made so if they time out, it won't attempt to try again for 24 hrs */
\IPS\Settings::i()->changeValues( array( 'sitemap_last_ping' => time() ) );
/* Ping Google */
$response = \IPS\Http\Url::external( "http://www.google.com/webmasters/tools/ping?sitemap=" . urlencode( $this->sitemapUrl ) )->request()->get();
if( $response->httpResponseCode != 200 )
{
$this->log[] = 'sitemap_ping_google_fail';
}
else
{
$this->log[] = 'sitemap_ping_google_success';
}
/* Ping Bing */
$response = \IPS\Http\Url::external( "http://www.bing.com/ping?sitemap=" . urlencode( $this->sitemapUrl ) )->request()->get();
if( $response->httpResponseCode != 200 )
{
$this->log[] = 'sitemap_ping_bing_fail';
}
else
{
$this->log[] = 'sitemap_ping_bing_success';
}
}
}