Method readFile

src/Routers/PagesRouter.js:495–508

* Reads and returns the content of a file at a given path. File reading to * serve content on the static route is only allowed from the pages * directory on downwards. * ----------------------------------------------------------------------- * **WARNING:** All file reads in the PagesRout

(filePath)

   * @returns {Promise<String>} The file content.
   */
  async readFile(filePath) {
    // Normalize path to prevent it from containing any directory changing
    // UNIX patterns which could expose the whole file system, e.g.
    // `http://example.com/parse/apps/../file.txt` requests a file outside
    // of the pages directory scope.
    const normalizedPath = path.normalize(filePath);

    // Abort if the path is outside of the path directory scope
    if (!normalizedPath.startsWith(this.pagesPath + path.sep)) {
      throw errors.fileOutsideAllowedScope;
    }

    return await fs.readFile(normalizedPath, 'utf-8');
  }

  /**
   * Loads a language resource JSON file that is used for translations.