hiveguard-backend/lib/validations.js

Backend for HiveGuard

/*
 * Copyright 2021-2022 Dimitrios-Georgios Akestoridis
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

const { URL } = require('url');

function isValidKey(potentialKey) {
  return (
    potentialKey
    && typeof potentialKey === 'string'
    && potentialKey.match(/^[0-9A-Fa-f]{32}$/)
  );
}

function isValidWIDSSensorID(potentialID) {
  return (
    potentialID
    && typeof potentialID === 'string'
    && potentialID.match(/^[A-Za-z]{1}[0-9A-Za-z-._]{0,126}$/)
  );
}

function isValidWIDSSensorAPI(potentialAPI) {
  if (
    !potentialAPI
    || typeof potentialAPI !== 'string'
    || potentialAPI.length < 1
    || potentialAPI.length > 127
    || potentialAPI.endsWith('/')
  ) {
    return false;
  }
  try {
    const urlObject = new URL(potentialAPI);
    return (urlObject.protocol === 'http:');
  } catch (err) {
    return false;
  }
}

function isValidHours(potentialHours) {
  return (
    potentialHours
    && typeof potentialHours === 'string'
    && !Number.isNaN(Number(potentialHours))
    && Number(potentialHours) > 0.0
  );
}

function isValidAlertID(potentialAlertID) {
  return (
    potentialAlertID
    && typeof potentialAlertID === 'string'
    && potentialAlertID.match(/^HG[0-9]{10}(E|F)[0-9]+$/)
  );
}

module.exports = {
  isValidKey,
  isValidWIDSSensorID,
  isValidWIDSSensorAPI,
  isValidHours,
  isValidAlertID,
};