backend/src/lib/utils.js

// Filename whitelist validation for template creation
function validFilename(filename) {
  const regex = /^[\p{Letter}\p{Mark}0-9 \[\]'()_-]+$/iu;

  return regex.test(filename);
}
exports.validFilename = validFilename;

// Escape XML special entities when using {@RawXML} in template generation
function escapeXMLEntities(input) {
  var XML_CHAR_MAP = { '<': '&lt;', '>': '&gt;', '&': '&amp;' };
  var standardEncode = input.replace(/[<>&]/g, function (ch) {
    return XML_CHAR_MAP[ch];
  });
  return standardEncode;
}
exports.escapeXMLEntities = escapeXMLEntities;

// Convert number to 3 digits format if under 100
function lPad(number) {
  if (number <= 99) {
    number = ('00' + number).slice(-3);
  }
  return `${number}`;
}
exports.lPad = lPad;

function escapeRegex(regex) {
  return regex.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
}
exports.escapeRegex = escapeRegex;

function generateUUID() {
  return require('crypto').randomBytes(32).toString('hex');
}
exports.generateUUID = generateUUID;

var getObjectPaths = (obj, prefix = '') =>
  Object.keys(obj).reduce((res, el) => {
    if (Array.isArray(obj[el])) {
      return [...res, prefix + el];
    } else if (typeof obj[el] === 'object' && obj[el] !== null) {
      return [...res, ...getObjectPaths(obj[el], prefix + el + '.')];
    }
    return [...res, prefix + el];
  }, []);
exports.getObjectPaths = getObjectPaths;

function getSockets(io, room) {
  var result = [];
  io.sockets.sockets.forEach(data => {
    if (data.rooms.has(room)) {
      result.push(data);
    }
  });
  return result;
}
exports.getSockets = getSockets;