@terranlabs/email-nodes/node_modules/node-pop3/lib/Connection.js

Node-RED nodes to send and receive simple emails.

"use strict";

function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _net = require("net");

var _tls2 = _interopRequireDefault(require("tls"));

var _events = require("events");

var _stream = require("stream");

var _constant = require("./constant.js");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _await(value, then, direct) {
  if (direct) {
    return then ? then(value) : value;
  }

  if (!value || !value.then) {
    value = Promise.resolve(value);
  }

  return then ? value.then(then) : value;
}

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _iterableToArrayLimit(arr, i) { var _i = arr == null ? null : typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"]; if (_i == null) return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); Object.defineProperty(subClass, "prototype", { writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } else if (call !== void 0) { throw new TypeError("Derived constructors may only return object or undefined"); } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

var Pop3Connection = /*#__PURE__*/function (_EventEmitter) {
  _inherits(Pop3Connection, _EventEmitter);

  var _super = _createSuper(Pop3Connection);

  function Pop3Connection(_ref) {
    var _this;

    var host = _ref.host,
        port = _ref.port,
        tls = _ref.tls,
        timeout = _ref.timeout,
        tlsOptions = _ref.tlsOptions,
        servername = _ref.servername;

    _classCallCheck(this, Pop3Connection);

    _this = _super.call(this);
    _this.host = host;
    _this.port = port || (tls ? 995 : 110);
    _this.tls = tls;
    _this.timeout = timeout;
    _this._socket = null;
    _this._stream = null;
    _this._command;
    _this.tlsOptions = tlsOptions || {};
    _this.servername = servername || host;
    return _this;
  }

  _createClass(Pop3Connection, [{
    key: "_updateStream",
    value: function _updateStream() {
      this._stream = new _stream.Readable({
        read: function read() {}
      });
      return this._stream;
    }
  }, {
    key: "_pushStream",
    value: function _pushStream(buffer) {
      if (_constant.TERMINATOR_BUFFER_ARRAY.some(function (_buffer) {
        return _buffer.equals(buffer);
      })) {
        return this._endStream();
      }

      var endBuffer = buffer.slice(-5);

      if (endBuffer.equals(_constant.TERMINATOR_BUFFER)) {
        this._stream.push(buffer.slice(0, -5));

        return this._endStream();
      }

      this._stream.push(buffer);
    }
  }, {
    key: "_endStream",
    value: function _endStream(err) {
      if (this._stream) {
        this._stream.push(null);
      }

      this._stream = null;
      this.emit('end', err);
    }
  }, {
    key: "connect",
    value: function connect() {
      var _this2 = this;

      var host = this.host,
          port = this.port,
          tlsOptions = this.tlsOptions,
          servername = this.servername;
      var socket = new _net.Socket();
      socket.setKeepAlive(true);
      return new Promise(function (resolve, reject) {
        if (typeof _this2.timeout !== 'undefined') {
          socket.setTimeout(_this2.timeout, function () {
            var err = new Error('timeout');
            err.eventName = 'timeout';
            reject(err);

            if (_this2.listeners('end').length) {
              _this2.emit('end', err);
            }

            if (_this2.listeners('error').length) {
              _this2.emit('error', err);
            }

            _this2._socket.end();

            _this2._socket = null;
          });
        }

        if (_this2.tls) {
          var options = Object.assign({
            host: host,
            port: port,
            socket: socket,
            servername: servername
          }, tlsOptions);
          _this2._socket = _tls2["default"].connect(options);
        } else {
          _this2._socket = socket;
        }

        _this2._socket.on('data', function (buffer) {
          if (_this2._stream) {
            return _this2._pushStream(buffer);
          }

          if (buffer[0] === 45) {
            // '-'
            var _err = new Error(buffer.slice(5, -2));

            _err.eventName = 'error';
            _err.command = _this2._command;
            return _this2.emit('error', _err);
          }

          if (buffer[0] === 43) {
            // '+'
            var firstLineEndIndex = buffer.indexOf(_constant.CRLF_BUFFER);
            var infoBuffer = buffer.slice(4, firstLineEndIndex);

            var _split = (_this2._command || '').split(' '),
                _split2 = _slicedToArray(_split, 1),
                commandName = _split2[0];

            var stream = null;

            if (_constant.MULTI_LINE_COMMAND_NAME.includes(commandName)) {
              _this2._updateStream();

              stream = _this2._stream;
              var bodyBuffer = buffer.slice(firstLineEndIndex + 2);

              if (bodyBuffer[0]) {
                _this2._pushStream(bodyBuffer);
              }
            }

            _this2.emit('response', infoBuffer.toString(), stream);

            resolve();
            return;
          }

          var err = new Error('Unexpected response');
          err.eventName = 'bad-server-response';
          reject(err);
        });

        _this2._socket.on('error', function (err) {
          err.eventName = 'error';

          if (_this2._stream) {
            _this2.emit('error', err);

            return;
          }

          reject(err);
          _this2._socket = null;
        });

        _this2._socket.once('close', function () {
          var err = new Error('close');
          err.eventName = 'close';
          reject(err);
          _this2._socket = null;
        });

        _this2._socket.once('end', function () {
          var err = new Error('end');
          err.eventName = 'end';
          reject(err);
          _this2._socket = null;
        });

        socket.connect({
          host: host,
          port: port
        });
      });
    }
  }, {
    key: "command",
    value: function command() {
      try {
        var _this4 = this;

        for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
          args[_key] = arguments[_key];
        }

        _this4._command = args.join(' ');

        if (!_this4._socket) {
          throw new Error('no-socket');
        }

        return _await(new Promise(function (resolve, reject) {
          if (!_this4._stream) {
            return resolve();
          }

          _this4.once('error', function (err) {
            return reject(err);
          });

          _this4.once('end', function (err) {
            return err ? reject(err) : resolve();
          });
        }), function () {
          return new Promise(function (resolve, reject) {
            var rejectFn = function rejectFn(err) {
              return reject(err);
            };

            _this4.once('error', rejectFn);

            _this4.once('response', function (info, stream) {
              _this4.removeListener('error', rejectFn);

              resolve([info, stream]);
            });

            if (!_this4._socket) {
              reject(new Error('no-socket'));
            }

            _this4._socket.write("".concat(_this4._command).concat(_constant.CRLF), 'utf8');
          });
        });
      } catch (e) {
        return Promise.reject(e);
      }
    }
  }]);

  return Pop3Connection;
}(_events.EventEmitter);

var _default = Pop3Connection;
exports["default"] = _default;
module.exports = exports.default;
//# sourceMappingURL=Connection.js.map