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   1  <?php
   2  
   3  namespace dokuwiki\Action;
   4  
   5  use dokuwiki\Action\Exception\FatalException;
   6  use dokuwiki\Sitemap\Mapper;
   7  use dokuwiki\Utf8\PhpString;
   8  
   9  /**
  10   * Class Sitemap
  11   *
  12   * Generate an XML sitemap for search engines. Do not confuse with Index
  13   *
  14   * @package dokuwiki\Action
  15   */
  16  class Sitemap extends AbstractAction {
  17  
  18      /** @inheritdoc */
  19      public function minimumPermission() {
  20          return AUTH_NONE;
  21      }
  22  
  23      /**
  24       * Handle sitemap delivery
  25       *
  26       * @author Michael Hamann <michael@content-space.de>
  27       * @throws FatalException
  28       * @inheritdoc
  29       */
  30      public function preProcess() {
  31          global $conf;
  32  
  33          if($conf['sitemap'] < 1 || !is_numeric($conf['sitemap'])) {
  34              throw new FatalException('Sitemap generation is disabled', 404);
  35          }
  36  
  37          $sitemap = Mapper::getFilePath();
  38          if(Mapper::sitemapIsCompressed()) {
  39              $mime = 'application/x-gzip';
  40          } else {
  41              $mime = 'application/xml; charset=utf-8';
  42          }
  43  
  44          // Check if sitemap file exists, otherwise create it
  45          if(!is_readable($sitemap)) {
  46              Mapper::generate();
  47          }
  48  
  49          if(is_readable($sitemap)) {
  50              // Send headers
  51              header('Content-Type: ' . $mime);
  52              header('Content-Disposition: attachment; filename=' . PhpString::basename($sitemap));
  53  
  54              http_conditionalRequest(filemtime($sitemap));
  55  
  56              // Send file
  57              //use x-sendfile header to pass the delivery to compatible webservers
  58              http_sendfile($sitemap);
  59  
  60              readfile($sitemap);
  61              exit;
  62          }
  63  
  64          throw new FatalException('Could not read the sitemap file - bad permissions?');
  65      }
  66  
  67  }