syslog-appender-pro/compiled_script.js

Syslog Appender for TCP/TLS/UDP connections

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.syslog = exports.rfc6587 = exports.rfc5426 = exports.rfc5425 = exports.rfc5424 = exports.SEVERITIES = exports.FACILITIES = void 0;

var _os = require("os");

var _net = require("net");

var _tls = require("tls");

var _dgram = require("dgram");

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

// REFERENCES
// https://tools.ietf.org/html/rfc5424
// https://tools.ietf.org/html/rfc5425
// https://tools.ietf.org/html/rfc5426
// https://tools.ietf.org/html/rfc6587
var FACILITIES = {
  LOCAL0: 16,
  LOCAL1: 17,
  LOCAL2: 18,
  LOCAL3: 19,
  LOCAL4: 20,
  LOCAL5: 21,
  LOCAL6: 22,
  LOCAL7: 23
};
exports.FACILITIES = FACILITIES;
var SEVERITIES = {
  ALERT: 1,
  CRITICAL: 2,
  DEBUG: 7,
  EMERGENCY: 0,
  ERROR: 3,
  INFORMATIONAL: 6,
  NOTICE: 5,
  WARNING: 4
};
exports.SEVERITIES = SEVERITIES;

var isObject = function isObject(value) {
  return _typeof(value) === 'object' && Array.isArray(value) === false;
};

var parseStructuredData = function parseStructuredData(structuredData) {
  var result = '';

  for (var id in structuredData) {
    if (isObject(structuredData[id]) === true) {
      result += "[".concat(id);

      for (var param in structuredData[id]) {
        result += " ".concat(param, "=\"").concat(structuredData[id][param], "\"");
      }

      result += ']';
    }
  }

  return result.length === 0 ? '-' : result;
};

var rfc5424 = function rfc5424(_ref) {
  var appName = _ref.appName,
    eol = _ref.eol,
    facility = _ref.facility,
    hostname = _ref.hostname,
    message = _ref.message,
    msgId = _ref.msgId,
    procId = _ref.procId,
    severity = _ref.severity,
    structuredData = _ref.structuredData,
    timestamp = _ref.timestamp;

  if (typeof facility === 'string') {
    var _FACILITIES$facility$;

    facility = (_FACILITIES$facility$ = FACILITIES[facility.toUpperCase()]) !== null && _FACILITIES$facility$ !== void 0 ? _FACILITIES$facility$ : FACILITIES.LOCAL0;
  }

  if (typeof severity === 'string') {
    var _SEVERITIES$severity$;

    severity = (_SEVERITIES$severity$ = SEVERITIES[severity.toUpperCase()]) !== null && _SEVERITIES$severity$ !== void 0 ? _SEVERITIES$severity$ : SEVERITIES.DEBUG;
  }

  if (isObject(structuredData) === true) {
    structuredData = parseStructuredData(structuredData);
  }

  var priority = Math.imul(facility, 8) + severity;
  return Buffer.from("<".concat(priority, ">1 ").concat(timestamp, " ").concat(hostname, " ").concat(appName, " ").concat(procId, " ").concat(msgId, " ").concat(structuredData, " ").concat(message).concat(eol));
}; // sync -> async


exports.rfc5424 = rfc5424;

var rfc5425 = function rfc5425(_ref2) {
  var defaultAppName = _ref2.defaultAppName,
    defaultEol = _ref2.defaultEol,
    defaultFacility = _ref2.defaultFacility,
    defaultHostname = _ref2.defaultHostname,
    defaultMsgId = _ref2.defaultMsgId,
    defaultProcId = _ref2.defaultProcId,
    defaultSeverity = _ref2.defaultSeverity,
    defaultStructuredData = _ref2.defaultStructuredData,
    ca = _ref2.ca,
    cert = _ref2.cert,
    checkServerIdentity = _ref2.checkServerIdentity,
    family = _ref2.family,
    host = _ref2.host,
    key = _ref2.key,
    port = _ref2.port;
  return function (_ref3) {
    var _ref3$appName = _ref3.appName,
      appName = _ref3$appName === void 0 ? defaultAppName : _ref3$appName,
      _ref3$eol = _ref3.eol,
      eol = _ref3$eol === void 0 ? defaultEol : _ref3$eol,
      _ref3$facility = _ref3.facility,
      facility = _ref3$facility === void 0 ? defaultFacility : _ref3$facility,
      _ref3$hostname = _ref3.hostname,
      hostname = _ref3$hostname === void 0 ? defaultHostname : _ref3$hostname,
      message = _ref3.message,
      _ref3$msgId = _ref3.msgId,
      msgId = _ref3$msgId === void 0 ? defaultMsgId : _ref3$msgId,
      _ref3$procId = _ref3.procId,
      procId = _ref3$procId === void 0 ? defaultProcId : _ref3$procId,
      _ref3$severity = _ref3.severity,
      severity = _ref3$severity === void 0 ? defaultSeverity : _ref3$severity,
      _ref3$structuredData = _ref3.structuredData,
      structuredData = _ref3$structuredData === void 0 ? defaultStructuredData : _ref3$structuredData,
      _ref3$timestamp = _ref3.timestamp,
      timestamp = _ref3$timestamp === void 0 ? new Date().toISOString() : _ref3$timestamp;
    return new Promise(function (resolve, reject) {
      var options = {
        ca: ca,
        cert: cert,
        family: family,
        host: host,
        key: key,
        port: port
      };

      if (typeof checkServerIdentity === 'function') {
        options.checkServerIdentity = checkServerIdentity;
      }

      var socket = (0, _tls.connect)(options);
      socket.once('error', reject);
      socket.once('end', resolve);
      socket.once('connect', function () {
        socket.end(rfc5424({
          appName: appName,
          eol: eol,
          facility: facility,
          hostname: hostname,
          message: message,
          msgId: msgId,
          procId: procId,
          severity: severity,
          structuredData: structuredData,
          timestamp: timestamp
        }));
      });
    });
  };
}; // async -> sync


exports.rfc5425 = rfc5425;

var rfc5426 = function rfc5426(_ref4) {
  var defaultAppName = _ref4.defaultAppName,
    defaultEol = _ref4.defaultEol,
    defaultFacility = _ref4.defaultFacility,
    defaultHostname = _ref4.defaultHostname,
    defaultMsgId = _ref4.defaultMsgId,
    defaultProcId = _ref4.defaultProcId,
    defaultSeverity = _ref4.defaultSeverity,
    defaultStructuredData = _ref4.defaultStructuredData,
    family = _ref4.family,
    host = _ref4.host,
    port = _ref4.port;
  return new Promise(function (resolve, reject) {
    var options = {
      0: {
        type: 'udp6'
      },
      4: {
        type: 'udp4'
      },
      6: {
        ipv6Only: true,
        type: 'udp6'
      }
    };
    var socket = (0, _dgram.createSocket)(options[family]);
    socket.connect(port, host);
    socket.once('error', reject);
    socket.once('connect', function () {
      resolve(function (_ref5) {
        var _ref5$appName = _ref5.appName,
          appName = _ref5$appName === void 0 ? defaultAppName : _ref5$appName,
          _ref5$eol = _ref5.eol,
          eol = _ref5$eol === void 0 ? defaultEol : _ref5$eol,
          _ref5$facility = _ref5.facility,
          facility = _ref5$facility === void 0 ? defaultFacility : _ref5$facility,
          _ref5$hostname = _ref5.hostname,
          hostname = _ref5$hostname === void 0 ? defaultHostname : _ref5$hostname,
          message = _ref5.message,
          _ref5$msgId = _ref5.msgId,
          msgId = _ref5$msgId === void 0 ? defaultMsgId : _ref5$msgId,
          _ref5$procId = _ref5.procId,
          procId = _ref5$procId === void 0 ? defaultProcId : _ref5$procId,
          _ref5$severity = _ref5.severity,
          severity = _ref5$severity === void 0 ? defaultSeverity : _ref5$severity,
          _ref5$structuredData = _ref5.structuredData,
          structuredData = _ref5$structuredData === void 0 ? defaultStructuredData : _ref5$structuredData,
          _ref5$timestamp = _ref5.timestamp,
          timestamp = _ref5$timestamp === void 0 ? new Date().toISOString() : _ref5$timestamp;
        socket.send(rfc5424({
          appName: appName,
          eol: eol,
          facility: facility,
          hostname: hostname,
          message: message,
          msgId: msgId,
          procId: procId,
          severity: severity,
          structuredData: structuredData,
          timestamp: timestamp
        }));
      });
    });
  });
}; // sync -> async


exports.rfc5426 = rfc5426;

var rfc6587 = function rfc6587(_ref6) {
  var defaultAppName = _ref6.defaultAppName,
    defaultEol = _ref6.defaultEol,
    defaultFacility = _ref6.defaultFacility,
    defaultHostname = _ref6.defaultHostname,
    defaultMsgId = _ref6.defaultMsgId,
    defaultProcId = _ref6.defaultProcId,
    defaultSeverity = _ref6.defaultSeverity,
    defaultStructuredData = _ref6.defaultStructuredData,
    family = _ref6.family,
    host = _ref6.host,
    port = _ref6.port;
  return function (_ref7) {
    var _ref7$appName = _ref7.appName,
      appName = _ref7$appName === void 0 ? defaultAppName : _ref7$appName,
      _ref7$eol = _ref7.eol,
      eol = _ref7$eol === void 0 ? defaultEol : _ref7$eol,
      _ref7$facility = _ref7.facility,
      facility = _ref7$facility === void 0 ? defaultFacility : _ref7$facility,
      _ref7$hostname = _ref7.hostname,
      hostname = _ref7$hostname === void 0 ? defaultHostname : _ref7$hostname,
      message = _ref7.message,
      _ref7$msgId = _ref7.msgId,
      msgId = _ref7$msgId === void 0 ? defaultMsgId : _ref7$msgId,
      _ref7$procId = _ref7.procId,
      procId = _ref7$procId === void 0 ? defaultProcId : _ref7$procId,
      _ref7$severity = _ref7.severity,
      severity = _ref7$severity === void 0 ? defaultSeverity : _ref7$severity,
      _ref7$structuredData = _ref7.structuredData,
      structuredData = _ref7$structuredData === void 0 ? defaultStructuredData : _ref7$structuredData,
      _ref7$timestamp = _ref7.timestamp,
      timestamp = _ref7$timestamp === void 0 ? new Date().toISOString() : _ref7$timestamp;
    return new Promise(function (resolve, reject) {
      var socket = (0, _net.createConnection)({
        family: family,
        host: host,
        port: port
      });
      socket.once('error', reject);
      socket.once('end', resolve);
      socket.once('connect', function () {
        socket.end(rfc5424({
          appName: appName,
          eol: eol,
          facility: facility,
          hostname: hostname,
          message: message,
          msgId: msgId,
          procId: procId,
          severity: severity,
          structuredData: structuredData,
          timestamp: timestamp
        }));
      });
    });
  };
};

exports.rfc6587 = rfc6587;

var syslog = function syslog(_ref8) {
  var ca = _ref8.ca,
    cert = _ref8.cert,
    checkServerIdentity = _ref8.checkServerIdentity,
    _ref8$defaultAppName = _ref8.defaultAppName,
    defaultAppName = _ref8$defaultAppName === void 0 ? process.argv[process.argv.length - 1] : _ref8$defaultAppName,
    _ref8$defaultEol = _ref8.defaultEol,
    defaultEol = _ref8$defaultEol === void 0 ? '\0' : _ref8$defaultEol,
    _ref8$defaultFacility = _ref8.defaultFacility,
    defaultFacility = _ref8$defaultFacility === void 0 ? FACILITIES.LOCAL0 : _ref8$defaultFacility,
    _ref8$defaultHostname = _ref8.defaultHostname,
    defaultHostname = _ref8$defaultHostname === void 0 ? (0, _os.hostname)() : _ref8$defaultHostname,
    _ref8$defaultMsgId = _ref8.defaultMsgId,
    defaultMsgId = _ref8$defaultMsgId === void 0 ? '-' : _ref8$defaultMsgId,
    _ref8$defaultProcId = _ref8.defaultProcId,
    defaultProcId = _ref8$defaultProcId === void 0 ? process.pid : _ref8$defaultProcId,
    _ref8$defaultSeverity = _ref8.defaultSeverity,
    defaultSeverity = _ref8$defaultSeverity === void 0 ? SEVERITIES.DEBUG : _ref8$defaultSeverity,
    _ref8$defaultStructur = _ref8.defaultStructuredData,
    defaultStructuredData = _ref8$defaultStructur === void 0 ? '-' : _ref8$defaultStructur,
    _ref8$host = _ref8.host,
    host = _ref8$host === void 0 ? 'localhost' : _ref8$host,
    _ref8$port = _ref8.port,
    port = _ref8$port === void 0 ? 514 : _ref8$port,
    key = _ref8.key,
    _ref8$protocol = _ref8.protocol,
    protocol = _ref8$protocol === void 0 ? 'tcp' : _ref8$protocol;

  switch (protocol) {
    case 'tls':
      {
        return rfc5425({
          ca: ca,
          cert: cert,
          checkServerIdentity: checkServerIdentity,
          defaultAppName: defaultAppName,
          defaultEol: defaultEol,
          defaultFacility: defaultFacility,
          defaultHostname: defaultHostname,
          defaultMsgId: defaultMsgId,
          defaultProcId: defaultProcId,
          defaultSeverity: defaultSeverity,
          defaultStructuredData: defaultStructuredData,
          family: 0,
          host: host,
          hostname: _os.hostname,
          key: key,
          port: port
        });
      }

    case 'tls4':
      {
        return rfc5425({
          ca: ca,
          cert: cert,
          checkServerIdentity: checkServerIdentity,
          defaultAppName: defaultAppName,
          defaultEol: defaultEol,
          defaultFacility: defaultFacility,
          defaultHostname: defaultHostname,
          defaultMsgId: defaultMsgId,
          defaultProcId: defaultProcId,
          defaultSeverity: defaultSeverity,
          defaultStructuredData: defaultStructuredData,
          family: 4,
          host: host,
          hostname: _os.hostname,
          key: key,
          port: port
        });
      }

    case 'tls6':
      {
        return rfc5425({
          ca: ca,
          cert: cert,
          checkServerIdentity: checkServerIdentity,
          defaultAppName: defaultAppName,
          defaultEol: defaultEol,
          defaultFacility: defaultFacility,
          defaultHostname: defaultHostname,
          defaultMsgId: defaultMsgId,
          defaultProcId: defaultProcId,
          defaultSeverity: defaultSeverity,
          defaultStructuredData: defaultStructuredData,
          family: 6,
          host: host,
          hostname: _os.hostname,
          key: key,
          port: port
        });
      }

    case 'tcp':
      {
        return rfc6587({
          defaultAppName: defaultAppName,
          defaultEol: defaultEol,
          defaultFacility: defaultFacility,
          defaultHostname: defaultHostname,
          defaultMsgId: defaultMsgId,
          defaultProcId: defaultProcId,
          defaultSeverity: defaultSeverity,
          defaultStructuredData: defaultStructuredData,
          family: 0,
          host: host,
          hostname: _os.hostname,
          port: port
        });
      }

    case 'tcp4':
      {
        return rfc6587({
          defaultAppName: defaultAppName,
          defaultEol: defaultEol,
          defaultFacility: defaultFacility,
          defaultHostname: defaultHostname,
          defaultMsgId: defaultMsgId,
          defaultProcId: defaultProcId,
          defaultSeverity: defaultSeverity,
          defaultStructuredData: defaultStructuredData,
          family: 4,
          host: host,
          hostname: _os.hostname,
          port: port
        });
      }

    case 'tcp6':
      {
        return rfc6587({
          defaultAppName: defaultAppName,
          defaultEol: defaultEol,
          defaultFacility: defaultFacility,
          defaultHostname: defaultHostname,
          defaultMsgId: defaultMsgId,
          defaultProcId: defaultProcId,
          defaultSeverity: defaultSeverity,
          defaultStructuredData: defaultStructuredData,
          family: 6,
          host: host,
          hostname: _os.hostname,
          port: port
        });
      }

    case 'udp':
      {
        return rfc5426({
          defaultAppName: defaultAppName,
          defaultEol: defaultEol,
          defaultFacility: defaultFacility,
          defaultHostname: defaultHostname,
          defaultMsgId: defaultMsgId,
          defaultProcId: defaultProcId,
          defaultSeverity: defaultSeverity,
          defaultStructuredData: defaultStructuredData,
          family: 0,
          host: host,
          hostname: _os.hostname,
          port: port
        });
      }

    case 'udp4':
      {
        return rfc5426({
          defaultAppName: defaultAppName,
          defaultEol: defaultEol,
          defaultFacility: defaultFacility,
          defaultHostname: defaultHostname,
          defaultMsgId: defaultMsgId,
          defaultProcId: defaultProcId,
          defaultSeverity: defaultSeverity,
          defaultStructuredData: defaultStructuredData,
          family: 4,
          host: host,
          hostname: _os.hostname,
          port: port
        });
      }

    case 'udp6':
      {
        return rfc5426({
          defaultAppName: defaultAppName,
          defaultEol: defaultEol,
          defaultFacility: defaultFacility,
          defaultHostname: defaultHostname,
          defaultMsgId: defaultMsgId,
          defaultProcId: defaultProcId,
          defaultSeverity: defaultSeverity,
          defaultStructuredData: defaultStructuredData,
          family: 6,
          host: host,
          hostname: _os.hostname,
          port: port
        });
      }

    default:
      {
        throw Error('Unsupported protocol');
      }
  }
};

exports.syslog = syslog;