OwlCyberSecurity - MANAGER

Edit File: isEmail.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = isEmail;
var _assertString = _interopRequireDefault(require("./util/assertString"));
var _checkHost = _interopRequireDefault(require("./util/checkHost"));
var _isByteLength = _interopRequireDefault(require("./isByteLength"));
var _isFQDN = _interopRequireDefault(require("./isFQDN"));
var _isIP = _interopRequireDefault(require("./isIP"));
var _merge = _interopRequireDefault(require("./util/merge"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
var default_email_options = {
  allow_display_name: false,
  allow_underscores: false,
  require_display_name: false,
  allow_utf8_local_part: true,
  require_tld: true,
  blacklisted_chars: '',
  ignore_max_length: false,
  host_blacklist: [],
  host_whitelist: []
};

/* eslint-disable max-len */
/* eslint-disable no-control-regex */
var splitNameAddress = /^([^\x00-\x1F\x7F-\x9F\cX]+)</i;
var emailUserPart = /^[a-z\d!#\$%&'\*\+\-\/=\?\^_`{\|}~]+$/i;
var gmailUserPart = /^[a-z\d]+$/;
var quotedEmailUser = /^([\s\x01-\x08\x0b\x0c\x0e-\x1f\x7f\x21\x23-\x5b\x5d-\x7e]|(\\[\x01-\x09\x0b\x0c\x0d-\x7f]))*$/i;
var emailUserUtf8Part = /^[a-z\d!#\$%&'\*\+\-\/=\?\^_`{\|}~\u00A1-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+$/i;
var quotedEmailUserUtf8 = /^([\s\x01-\x08\x0b\x0c\x0e-\x1f\x7f\x21\x23-\x5b\x5d-\x7e\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]|(\\[\x01-\x09\x0b\x0c\x0d-\x7f\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))*$/i;
var defaultMaxEmailLength = 254;
/* eslint-enable max-len */
/* eslint-enable no-control-regex */

/**
 * Validate display name according to the RFC2822: https://tools.ietf.org/html/rfc2822#appendix-A.1.2
 * @param {String} display_name
 */
function validateDisplayName(display_name) {
  var display_name_without_quotes = display_name.replace(/^"(.+)"$/, '$1');
  // display name with only spaces is not valid
  if (!display_name_without_quotes.trim()) {
    return false;
  }

// check whether display name contains illegal character
  var contains_illegal = /[\.";<>]/.test(display_name_without_quotes);
  if (contains_illegal) {
    // if contains illegal characters,
    // must to be enclosed in double-quotes, otherwise it's not a valid display name
    if (display_name_without_quotes === display_name) {
      return false;
    }

// the quotes in display name must start with character symbol \
    var all_start_with_back_slash = display_name_without_quotes.split('"').length === display_name_without_quotes.split('\\"').length;
    if (!all_start_with_back_slash) {
      return false;
    }
  }
  return true;
}
function isEmail(str, options) {
  (0, _assertString.default)(str);
  options = (0, _merge.default)(options, default_email_options);
  if (options.require_display_name || options.allow_display_name) {
    var display_email = str.match(splitNameAddress);
    if (display_email) {
      var display_name = display_email[1];

// Remove display name and angle brackets to get email address
      // Can be done in the regex but will introduce a ReDOS (See  #1597 for more info)
      str = str.replace(display_name, '').replace(/(^<|>$)/g, '');

// sometimes need to trim the last space to get the display name
      // because there may be a space between display name and email address
      // eg. myname <address@gmail.com>
      // the display name is `myname` instead of `myname `, so need to trim the last space
      if (display_name.endsWith(' ')) {
        display_name = display_name.slice(0, -1);
      }
      if (!validateDisplayName(display_name)) {
        return false;
      }
    } else if (options.require_display_name) {
      return false;
    }
  }
  if (!options.ignore_max_length && str.length > defaultMaxEmailLength) {
    return false;
  }
  var parts = str.split('@');
  var domain = parts.pop();
  var lower_domain = domain.toLowerCase();
  if (options.host_blacklist.length > 0 && (0, _checkHost.default)(lower_domain, options.host_blacklist)) {
    return false;
  }
  if (options.host_whitelist.length > 0 && !(0, _checkHost.default)(lower_domain, options.host_whitelist)) {
    return false;
  }
  var user = parts.join('@');
  if (options.domain_specific_validation && (lower_domain === 'gmail.com' || lower_domain === 'googlemail.com')) {
    /*
    Previously we removed dots for gmail addresses before validating.
    This was removed because it allows `multiple..dots@gmail.com`
    to be reported as valid, but it is not.
    Gmail only normalizes single dots, removing them from here is pointless,
    should be done in normalizeEmail
    */
    user = user.toLowerCase();

// Removing sub-address from username before gmail validation
    var username = user.split('+')[0];

// Dots are not included in gmail length restriction
    if (!(0, _isByteLength.default)(username.replace(/\./g, ''), {
      min: 6,
      max: 30
    })) {
      return false;
    }
    var _user_parts = username.split('.');
    for (var i = 0; i < _user_parts.length; i++) {
      if (!gmailUserPart.test(_user_parts[i])) {
        return false;
      }
    }
  }
  if (options.ignore_max_length === false && (!(0, _isByteLength.default)(user, {
    max: 64
  }) || !(0, _isByteLength.default)(domain, {
    max: 254
  }))) {
    return false;
  }
  if (!(0, _isFQDN.default)(domain, {
    require_tld: options.require_tld,
    ignore_max_length: options.ignore_max_length,
    allow_underscores: options.allow_underscores
  })) {
    if (!options.allow_ip_domain) {
      return false;
    }
    if (!(0, _isIP.default)(domain)) {
      if (!domain.startsWith('[') || !domain.endsWith(']')) {
        return false;
      }
      var noBracketdomain = domain.slice(1, -1);
      if (noBracketdomain.length === 0 || !(0, _isIP.default)(noBracketdomain)) {
        return false;
      }
    }
  }
  if (options.blacklisted_chars) {
    if (user.search(new RegExp("[".concat(options.blacklisted_chars, "]+"), 'g')) !== -1) return false;
  }
  if (user[0] === '"' && user[user.length - 1] === '"') {
    user = user.slice(1, user.length - 1);
    return options.allow_utf8_local_part ? quotedEmailUserUtf8.test(user) : quotedEmailUser.test(user);
  }
  var pattern = options.allow_utf8_local_part ? emailUserUtf8Part : emailUserPart;
  var user_parts = user.split('.');
  for (var _i = 0; _i < user_parts.length; _i++) {
    if (!pattern.test(user_parts[_i])) {
      return false;
    }
  }
  return true;
}
module.exports = exports.default;
module.exports.default = exports.default;