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   1  <?php
   2  
   3  namespace dokuwiki\Action;
   4  
   5  use dokuwiki\Action\Exception\ActionAbort;
   6  use dokuwiki\Action\Exception\ActionException;
   7  
   8  /**
   9   * Class Revert
  10   *
  11   * Quick revert to an old revision
  12   *
  13   * @package dokuwiki\Action
  14   */
  15  class Revert extends AbstractUserAction
  16  {
  17      /** @inheritdoc */
  18      public function minimumPermission()
  19      {
  20          return AUTH_EDIT;
  21      }
  22  
  23      /**
  24       *
  25       * @inheritdoc
  26       * @throws ActionAbort
  27       * @throws ActionException
  28       * @todo check for writability of the current page ($INFO might do it wrong and check the attic version)
  29       */
  30      public function preProcess()
  31      {
  32          if (!checkSecurityToken()) throw new ActionException();
  33  
  34          global $ID;
  35          global $REV;
  36          global $lang;
  37  
  38          // when no revision is given, delete current one
  39          // FIXME this feature is not exposed in the GUI currently
  40          $text = '';
  41          $sum = $lang['deleted'];
  42          if ($REV) {
  43              $text = rawWiki($ID, $REV);
  44              if (!$text) throw new ActionException(); //something went wrong
  45              $sum = sprintf($lang['restored'], dformat($REV));
  46          }
  47  
  48          // spam check
  49          if (checkwordblock($text)) {
  50              msg($lang['wordblock'], -1);
  51              throw new ActionException('edit');
  52          }
  53  
  54          saveWikiText($ID, $text, $sum, false);
  55          msg($sum, 1);
  56          $REV = '';
  57  
  58          // continue with draftdel -> redirect -> show
  59          throw new ActionAbort('draftdel');
  60      }
  61  }