wcfsetup/install/files/lib/system/package/FilesFileHandler.class.php

   1 <?php
   2
   3 namespace wcf\system\package;
   4
   5 use wcf\data\package\Package;
   6 use wcf\system\database\util\PreparedStatementConditionBuilder;
   7 use wcf\system\exception\SystemException;
   8 use wcf\system\WCF;
   9
  10 /**
  11  * File handler implementation for the installation of regular files.
  12  *
  13  * @author  Matthias Schmidt, Marcel Werk
  14  * @copyright   2001-2019 WoltLab GmbH
  15  * @license GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
  16  * @package WoltLabSuite\Core\System\Package
  17  */
  18 class FilesFileHandler extends PackageInstallationFileHandler
  19 {
  20     /**
  21      * @inheritDoc
  22      */
  23     public function checkFiles(array $files)
  24     {
  25         if ($this->packageInstallation->getPackage()->package != 'com.woltlab.wcf') {
  26             if (!empty($files)) {
  27                 // get registered files of other packages for the
  28                 // same application
  29                 $conditions = new PreparedStatementConditionBuilder();
  30                 $conditions->add('packageID <> ?', [$this->packageInstallation->getPackageID()]);
  31                 $conditions->add('filename IN (?)', [$files]);
  32                 $conditions->add('application = ?', [$this->application]);
  33
  34                 $sql = "SELECT  filename, packageID
  35                         FROM    wcf" . WCF_N . "_package_installation_file_log
  36                         " . $conditions;
  37                 $statement = WCF::getDB()->prepareStatement($sql);
  38                 $statement->execute($conditions->getParameters());
  39                 $lockedFiles = $statement->fetchMap('filename', 'packageID');
  40
  41                 // check delivered files
  42                 if (!empty($lockedFiles)) {
  43                     foreach ($files as $key => $file) {
  44                         if (isset($lockedFiles[$file])) {
  45                             $owningPackage = new Package($lockedFiles[$file]);
  46
  47                             throw new SystemException("A package can't overwrite files from other packages. Only an update from the package which owns the file can do that. (Package '" . $this->packageInstallation->getPackage()->package . "' tries to overwrite file '" . $file . "', which is owned by package '" . $owningPackage->package . "')");
  48                         }
  49                     }
  50                 }
  51             }
  52         }
  53     }
  54
  55     /**
  56      * @inheritDoc
  57      */
  58     public function logFiles(array $files)
  59     {
  60         if (empty($files)) {
  61             return;
  62         }
  63
  64         $sql = "INSERT IGNORE INTO  wcf" . WCF_N . "_package_installation_file_log
  65                                     (packageID, filename, application)
  66                 VALUES              (?, ?, ?)";
  67         $statement = WCF::getDB()->prepareStatement($sql);
  68
  69         WCF::getDB()->beginTransaction();
  70         foreach ($files as $file) {
  71             $statement->execute([
  72                 $this->packageInstallation->getPackageID(),
  73                 $file,
  74                 $this->application,
  75             ]);
  76         }
  77         WCF::getDB()->commitTransaction();
  78     }
  79 }