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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _nativeDuplexpair = _interopRequireDefault(require("native-duplexpair"));
var tls = _interopRequireWildcard(require("tls"));
var _events = require("events");
var _message = _interopRequireDefault(require("./message"));
var _packet = require("./packet");
var _incomingMessageStream = _interopRequireDefault(require("./incoming-message-stream"));
var _outgoingMessageStream = _interopRequireDefault(require("./outgoing-message-stream"));
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
class MessageIO extends _events.EventEmitter {
constructor(socket, packetSize, debug) {
super();
this.socket = void 0;
this.debug = void 0;
this.tlsNegotiationComplete = void 0;
this.incomingMessageStream = void 0;
this.outgoingMessageStream = void 0;
this.securePair = void 0;
this.incomingMessageIterator = void 0;
this.socket = socket;
this.debug = debug;
this.tlsNegotiationComplete = false;
this.incomingMessageStream = new _incomingMessageStream.default(this.debug);
this.incomingMessageIterator = this.incomingMessageStream[Symbol.asyncIterator]();
this.outgoingMessageStream = new _outgoingMessageStream.default(this.debug, {
packetSize: packetSize
});
this.socket.pipe(this.incomingMessageStream);
this.outgoingMessageStream.pipe(this.socket);
}
packetSize(...args) {
if (args.length > 0) {
const packetSize = args[0];
this.debug.log('Packet size changed from ' + this.outgoingMessageStream.packetSize + ' to ' + packetSize);
this.outgoingMessageStream.packetSize = packetSize;
}
if (this.securePair) {
this.securePair.cleartext.setMaxSendFragment(this.outgoingMessageStream.packetSize);
}
return this.outgoingMessageStream.packetSize;
} // Negotiate TLS encryption.
startTls(credentialsDetails, hostname, trustServerCertificate) {
if (!credentialsDetails.maxVersion || !['TLSv1.2', 'TLSv1.1', 'TLSv1'].includes(credentialsDetails.maxVersion)) {
credentialsDetails.maxVersion = 'TLSv1.2';
}
const secureContext = tls.createSecureContext(credentialsDetails);
return new Promise((resolve, reject) => {
const duplexpair = new _nativeDuplexpair.default();
const securePair = this.securePair = {
cleartext: tls.connect({
socket: duplexpair.socket1,
servername: hostname,
secureContext: secureContext,
rejectUnauthorized: !trustServerCertificate
}),
encrypted: duplexpair.socket2
};
const onSecureConnect = () => {
securePair.encrypted.removeListener('readable', onReadable);
securePair.cleartext.removeListener('error', onError);
securePair.cleartext.removeListener('secureConnect', onSecureConnect); // If we encounter any errors from this point on,
// we just forward them to the actual network socket.
securePair.cleartext.once('error', err => {
this.socket.destroy(err);
});
const cipher = securePair.cleartext.getCipher();
if (cipher) {
this.debug.log('TLS negotiated (' + cipher.name + ', ' + cipher.version + ')');
}
this.emit('secure', securePair.cleartext);
securePair.cleartext.setMaxSendFragment(this.outgoingMessageStream.packetSize);
this.outgoingMessageStream.unpipe(this.socket);
this.socket.unpipe(this.incomingMessageStream);
this.socket.pipe(securePair.encrypted);
securePair.encrypted.pipe(this.socket);
securePair.cleartext.pipe(this.incomingMessageStream);
this.outgoingMessageStream.pipe(securePair.cleartext);
this.tlsNegotiationComplete = true;
resolve();
};
const onError = err => {
securePair.encrypted.removeListener('readable', onReadable);
securePair.cleartext.removeListener('error', onError);
securePair.cleartext.removeListener('secureConnect', onSecureConnect);
securePair.cleartext.destroy();
securePair.encrypted.destroy();
reject(err);
};
const onReadable = () => {
// When there is handshake data on the encryped stream of the secure pair,
// we wrap it into a `PRELOGIN` message and send it to the server.
//
// For each `PRELOGIN` message we sent we get back exactly one response message
// that contains the server's handshake response data.
const message = new _message.default({
type: _packet.TYPE.PRELOGIN,
resetConnection: false
});
let chunk;
while (chunk = securePair.encrypted.read()) {
message.write(chunk);
}
this.outgoingMessageStream.write(message);
message.end();
this.readMessage().then(async response => {
// Setup readable handler for the next round of handshaking.
// If we encounter a `secureConnect` on the cleartext side
// of the secure pair, the `readable` handler is cleared
// and no further handshake handling will happen.
securePair.encrypted.once('readable', onReadable);
for await (const data of response) {
// We feed the server's handshake response back into the
// encrypted end of the secure pair.
securePair.encrypted.write(data);
}
}).catch(onError);
};
securePair.cleartext.once('error', onError);
securePair.cleartext.once('secureConnect', onSecureConnect);
securePair.encrypted.once('readable', onReadable);
});
} // TODO listen for 'drain' event when socket.write returns false.
// TODO implement incomplete request cancelation (2.2.1.6)
sendMessage(packetType, data, resetConnection) {
const message = new _message.default({
type: packetType,
resetConnection: resetConnection
});
message.end(data);
this.outgoingMessageStream.write(message);
return message;
}
/**
* Read the next incoming message from the socket.
*/
async readMessage() {
const result = await this.incomingMessageIterator.next();
if (result.done) {
throw new Error('unexpected end of message stream');
}
return result.value;
}
}
var _default = MessageIO;
exports.default = _default;
module.exports = MessageIO;
//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"names":["MessageIO","EventEmitter","constructor","socket","packetSize","debug","tlsNegotiationComplete","incomingMessageStream","outgoingMessageStream","securePair","incomingMessageIterator","IncomingMessageStream","Symbol","asyncIterator","OutgoingMessageStream","pipe","args","length","log","cleartext","setMaxSendFragment","startTls","credentialsDetails","hostname","trustServerCertificate","maxVersion","includes","secureContext","tls","createSecureContext","Promise","resolve","reject","duplexpair","DuplexPair","connect","socket1","servername","rejectUnauthorized","encrypted","socket2","onSecureConnect","removeListener","onReadable","onError","once","err","destroy","cipher","getCipher","name","version","emit","unpipe","message","Message","type","TYPE","PRELOGIN","resetConnection","chunk","read","write","end","readMessage","then","response","data","catch","sendMessage","packetType","result","next","done","Error","value","module","exports"],"sources":["../src/message-io.ts"],"sourcesContent":["import DuplexPair from 'native-duplexpair';\n\nimport { Duplex } from 'stream';\nimport * as tls from 'tls';\nimport { Socket } from 'net';\nimport { EventEmitter } from 'events';\n\nimport Debug from './debug';\n\nimport Message from './message';\nimport { TYPE } from './packet';\n\nimport IncomingMessageStream from './incoming-message-stream';\nimport OutgoingMessageStream from './outgoing-message-stream';\n\nclass MessageIO extends EventEmitter {\n  socket: Socket;\n  debug: Debug;\n\n  tlsNegotiationComplete: boolean;\n\n  private incomingMessageStream: IncomingMessageStream;\n  outgoingMessageStream: OutgoingMessageStream;\n\n  securePair?: {\n    cleartext: tls.TLSSocket;\n    encrypted: Duplex;\n  }\n\n  incomingMessageIterator: AsyncIterableIterator<Message>;\n\n  constructor(socket: Socket, packetSize: number, debug: Debug) {\n    super();\n\n    this.socket = socket;\n    this.debug = debug;\n\n    this.tlsNegotiationComplete = false;\n\n    this.incomingMessageStream = new IncomingMessageStream(this.debug);\n    this.incomingMessageIterator = this.incomingMessageStream[Symbol.asyncIterator]();\n\n    this.outgoingMessageStream = new OutgoingMessageStream(this.debug, { packetSize: packetSize });\n\n    this.socket.pipe(this.incomingMessageStream);\n    this.outgoingMessageStream.pipe(this.socket);\n  }\n\n  packetSize(...args: [number]) {\n    if (args.length > 0) {\n      const packetSize = args[0];\n      this.debug.log('Packet size changed from ' + this.outgoingMessageStream.packetSize + ' to ' + packetSize);\n      this.outgoingMessageStream.packetSize = packetSize;\n    }\n\n    if (this.securePair) {\n      this.securePair.cleartext.setMaxSendFragment(this.outgoingMessageStream.packetSize);\n    }\n\n    return this.outgoingMessageStream.packetSize;\n  }\n\n  // Negotiate TLS encryption.\n  startTls(credentialsDetails: tls.SecureContextOptions, hostname: string, trustServerCertificate: boolean) {\n    if (!credentialsDetails.maxVersion || !['TLSv1.2', 'TLSv1.1', 'TLSv1'].includes(credentialsDetails.maxVersion)) {\n      credentialsDetails.maxVersion = 'TLSv1.2';\n    }\n\n    const secureContext = tls.createSecureContext(credentialsDetails);\n\n    return new Promise<void>((resolve, reject) => {\n      const duplexpair = new DuplexPair();\n      const securePair = this.securePair = {\n        cleartext: tls.connect({\n          socket: duplexpair.socket1 as Socket,\n          servername: hostname,\n          secureContext: secureContext,\n          rejectUnauthorized: !trustServerCertificate\n        }),\n        encrypted: duplexpair.socket2\n      };\n\n      const onSecureConnect = () => {\n        securePair.encrypted.removeListener('readable', onReadable);\n        securePair.cleartext.removeListener('error', onError);\n        securePair.cleartext.removeListener('secureConnect', onSecureConnect);\n\n        // If we encounter any errors from this point on,\n        // we just forward them to the actual network socket.\n        securePair.cleartext.once('error', (err) => {\n          this.socket.destroy(err);\n        });\n\n        const cipher = securePair.cleartext.getCipher();\n        if (cipher) {\n          this.debug.log('TLS negotiated (' + cipher.name + ', ' + cipher.version + ')');\n        }\n\n        this.emit('secure', securePair.cleartext);\n\n        securePair.cleartext.setMaxSendFragment(this.outgoingMessageStream.packetSize);\n\n        this.outgoingMessageStream.unpipe(this.socket);\n        this.socket.unpipe(this.incomingMessageStream);\n\n        this.socket.pipe(securePair.encrypted);\n        securePair.encrypted.pipe(this.socket);\n\n        securePair.cleartext.pipe(this.incomingMessageStream);\n        this.outgoingMessageStream.pipe(securePair.cleartext);\n\n        this.tlsNegotiationComplete = true;\n\n        resolve();\n      };\n\n      const onError = (err?: Error) => {\n        securePair.encrypted.removeListener('readable', onReadable);\n        securePair.cleartext.removeListener('error', onError);\n        securePair.cleartext.removeListener('secureConnect', onSecureConnect);\n\n        securePair.cleartext.destroy();\n        securePair.encrypted.destroy();\n\n        reject(err);\n      };\n\n      const onReadable = () => {\n        // When there is handshake data on the encryped stream of the secure pair,\n        // we wrap it into a `PRELOGIN` message and send it to the server.\n        //\n        // For each `PRELOGIN` message we sent we get back exactly one response message\n        // that contains the server's handshake response data.\n        const message = new Message({ type: TYPE.PRELOGIN, resetConnection: false });\n\n        let chunk;\n        while (chunk = securePair.encrypted.read()) {\n          message.write(chunk);\n        }\n        this.outgoingMessageStream.write(message);\n        message.end();\n\n        this.readMessage().then(async (response) => {\n          // Setup readable handler for the next round of handshaking.\n          // If we encounter a `secureConnect` on the cleartext side\n          // of the secure pair, the `readable` handler is cleared\n          // and no further handshake handling will happen.\n          securePair.encrypted.once('readable', onReadable);\n\n          for await (const data of response) {\n            // We feed the server's handshake response back into the\n            // encrypted end of the secure pair.\n            securePair.encrypted.write(data);\n          }\n        }).catch(onError);\n      };\n\n      securePair.cleartext.once('error', onError);\n      securePair.cleartext.once('secureConnect', onSecureConnect);\n      securePair.encrypted.once('readable', onReadable);\n    });\n  }\n\n  // TODO listen for 'drain' event when socket.write returns false.\n  // TODO implement incomplete request cancelation (2.2.1.6)\n  sendMessage(packetType: number, data?: Buffer, resetConnection?: boolean) {\n    const message = new Message({ type: packetType, resetConnection: resetConnection });\n    message.end(data);\n    this.outgoingMessageStream.write(message);\n    return message;\n  }\n\n  /**\n   * Read the next incoming message from the socket.\n   */\n  async readMessage(): Promise<Message> {\n    const result = await this.incomingMessageIterator.next();\n\n    if (result.done) {\n      throw new Error('unexpected end of message stream');\n    }\n\n    return result.value;\n  }\n}\n\nexport default MessageIO;\nmodule.exports = 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