"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.LEGAL_TCP_SOCKET_OPTIONS = exports.LEGAL_TLS_SOCKET_OPTIONS = exports.prepareHandshakeDocument = exports.connect = void 0;
const net = require("net");
const socks_1 = require("socks");
const tls = require("tls");
const bson_1 = require("../bson");
const constants_1 = require("../constants");
const error_1 = require("../error");
const utils_1 = require("../utils");
const auth_provider_1 = require("./auth/auth_provider");
const gssapi_1 = require("./auth/gssapi");
const mongocr_1 = require("./auth/mongocr");
const mongodb_aws_1 = require("./auth/mongodb_aws");
const plain_1 = require("./auth/plain");
const providers_1 = require("./auth/providers");
const scram_1 = require("./auth/scram");
const x509_1 = require("./auth/x509");
const connection_1 = require("./connection");
const constants_2 = require("./wire_protocol/constants");
const AUTH_PROVIDERS = new Map([
[providers_1.AuthMechanism.MONGODB_AWS, new mongodb_aws_1.MongoDBAWS()],
[providers_1.AuthMechanism.MONGODB_CR, new mongocr_1.MongoCR()],
[providers_1.AuthMechanism.MONGODB_GSSAPI, new gssapi_1.GSSAPI()],
[providers_1.AuthMechanism.MONGODB_PLAIN, new plain_1.Plain()],
[providers_1.AuthMechanism.MONGODB_SCRAM_SHA1, new scram_1.ScramSHA1()],
[providers_1.AuthMechanism.MONGODB_SCRAM_SHA256, new scram_1.ScramSHA256()],
[providers_1.AuthMechanism.MONGODB_X509, new x509_1.X509()]
]);
function connect(options, callback) {
makeConnection({ ...options, existingSocket: undefined }, (err, socket) => {
var _a;
if (err || !socket) {
return callback(err);
}
let ConnectionType = (_a = options.connectionType) !== null && _a !== void 0 ? _a : connection_1.Connection;
if (options.autoEncrypter) {
ConnectionType = connection_1.CryptoConnection;
}
performInitialHandshake(new ConnectionType(socket, options), options, callback);
});
}
exports.connect = connect;
function checkSupportedServer(hello, options) {
var _a;
const serverVersionHighEnough = hello &&
(typeof hello.maxWireVersion === 'number' || hello.maxWireVersion instanceof bson_1.Int32) &&
hello.maxWireVersion >= constants_2.MIN_SUPPORTED_WIRE_VERSION;
const serverVersionLowEnough = hello &&
(typeof hello.minWireVersion === 'number' || hello.minWireVersion instanceof bson_1.Int32) &&
hello.minWireVersion <= constants_2.MAX_SUPPORTED_WIRE_VERSION;
if (serverVersionHighEnough) {
if (serverVersionLowEnough) {
return null;
}
const message = `Server at ${options.hostAddress} reports minimum wire version ${JSON.stringify(hello.minWireVersion)}, but this version of the Node.js Driver requires at most ${constants_2.MAX_SUPPORTED_WIRE_VERSION} (MongoDB ${constants_2.MAX_SUPPORTED_SERVER_VERSION})`;
return new error_1.MongoCompatibilityError(message);
}
const message = `Server at ${options.hostAddress} reports maximum wire version ${(_a = JSON.stringify(hello.maxWireVersion)) !== null && _a !== void 0 ? _a : 0}, but this version of the Node.js Driver requires at least ${constants_2.MIN_SUPPORTED_WIRE_VERSION} (MongoDB ${constants_2.MIN_SUPPORTED_SERVER_VERSION})`;
return new error_1.MongoCompatibilityError(message);
}
function performInitialHandshake(conn, options, _callback) {
const callback = function (err, ret) {
if (err && conn) {
conn.destroy();
}
_callback(err, ret);
};
const credentials = options.credentials;
if (credentials) {
if (!(credentials.mechanism === providers_1.AuthMechanism.MONGODB_DEFAULT) &&
!AUTH_PROVIDERS.get(credentials.mechanism)) {
callback(new error_1.MongoInvalidArgumentError(`AuthMechanism '${credentials.mechanism}' not supported`));
return;
}
}
const authContext = new auth_provider_1.AuthContext(conn, credentials, options);
prepareHandshakeDocument(authContext, (err, handshakeDoc) => {
if (err || !handshakeDoc) {
return callback(err);
}
const handshakeOptions = Object.assign({}, options);
if (typeof options.connectTimeoutMS === 'number') {
// The handshake technically is a monitoring check, so its socket timeout should be connectTimeoutMS
handshakeOptions.socketTimeoutMS = options.connectTimeoutMS;
}
const start = new Date().getTime();
conn.command((0, utils_1.ns)('admin.$cmd'), handshakeDoc, handshakeOptions, (err, response) => {
if (err) {
callback(err);
return;
}
if ((response === null || response === void 0 ? void 0 : response.ok) === 0) {
callback(new error_1.MongoServerError(response));
return;
}
if (!('isWritablePrimary' in response)) {
// Provide hello-style response document.
response.isWritablePrimary = response[constants_1.LEGACY_HELLO_COMMAND];
}
if (response.helloOk) {
conn.helloOk = true;
}
const supportedServerErr = checkSupportedServer(response, options);
if (supportedServerErr) {
callback(supportedServerErr);
return;
}
if (options.loadBalanced) {
if (!response.serviceId) {
return callback(new error_1.MongoCompatibilityError('Driver attempted to initialize in load balancing mode, ' +
'but the server does not support this mode.'));
}
}
// NOTE: This is metadata attached to the connection while porting away from
// handshake being done in the `Server` class. Likely, it should be
// relocated, or at very least restructured.
conn.hello = response;
conn.lastHelloMS = new Date().getTime() - start;
if (!response.arbiterOnly && credentials) {
// store the response on auth context
authContext.response = response;
const resolvedCredentials = credentials.resolveAuthMechanism(response);
const provider = AUTH_PROVIDERS.get(resolvedCredentials.mechanism);
if (!provider) {
return callback(new error_1.MongoInvalidArgumentError(`No AuthProvider for ${resolvedCredentials.mechanism} defined.`));
}
provider.auth(authContext, err => {
if (err) {
if (err instanceof error_1.MongoError) {
err.addErrorLabel(error_1.MongoErrorLabel.HandshakeError);
if ((0, error_1.needsRetryableWriteLabel)(err, response.maxWireVersion)) {
err.addErrorLabel(error_1.MongoErrorLabel.RetryableWriteError);
}
}
return callback(err);
}
callback(undefined, conn);
});
return;
}
callback(undefined, conn);
});
});
}
/**
* @internal
*
* This function is only exposed for testing purposes.
*/
function prepareHandshakeDocument(authContext, callback) {
const options = authContext.options;
const compressors = options.compressors ? options.compressors : [];
const { serverApi } = authContext.connection;
const handshakeDoc = {
[(serverApi === null || serverApi === void 0 ? void 0 : serverApi.version) ? 'hello' : constants_1.LEGACY_HELLO_COMMAND]: true,
helloOk: true,
client: options.metadata || (0, utils_1.makeClientMetadata)(options),
compression: compressors
};
if (options.loadBalanced === true) {
handshakeDoc.loadBalanced = true;
}
const credentials = authContext.credentials;
if (credentials) {
if (credentials.mechanism === providers_1.AuthMechanism.MONGODB_DEFAULT && credentials.username) {
handshakeDoc.saslSupportedMechs = `${credentials.source}.${credentials.username}`;
const provider = AUTH_PROVIDERS.get(providers_1.AuthMechanism.MONGODB_SCRAM_SHA256);
if (!provider) {
// This auth mechanism is always present.
return callback(new error_1.MongoInvalidArgumentError(`No AuthProvider for ${providers_1.AuthMechanism.MONGODB_SCRAM_SHA256} defined.`));
}
return provider.prepare(handshakeDoc, authContext, callback);
}
const provider = AUTH_PROVIDERS.get(credentials.mechanism);
if (!provider) {
return callback(new error_1.MongoInvalidArgumentError(`No AuthProvider for ${credentials.mechanism} defined.`));
}
return provider.prepare(handshakeDoc, authContext, callback);
}
callback(undefined, handshakeDoc);
}
exports.prepareHandshakeDocument = prepareHandshakeDocument;
/** @public */
exports.LEGAL_TLS_SOCKET_OPTIONS = [
'ALPNProtocols',
'ca',
'cert',
'checkServerIdentity',
'ciphers',
'crl',
'ecdhCurve',
'key',
'minDHSize',
'passphrase',
'pfx',
'rejectUnauthorized',
'secureContext',
'secureProtocol',
'servername',
'session'
];
/** @public */
exports.LEGAL_TCP_SOCKET_OPTIONS = [
'family',
'hints',
'localAddress',
'localPort',
'lookup'
];
function parseConnectOptions(options) {
const hostAddress = options.hostAddress;
if (!hostAddress)
throw new error_1.MongoInvalidArgumentError('Option "hostAddress" is required');
const result = {};
for (const name of exports.LEGAL_TCP_SOCKET_OPTIONS) {
if (options[name] != null) {
result[name] = options[name];
}
}
if (typeof hostAddress.socketPath === 'string') {
result.path = hostAddress.socketPath;
return result;
}
else if (typeof hostAddress.host === 'string') {
result.host = hostAddress.host;
result.port = hostAddress.port;
return result;
}
else {
// This should never happen since we set up HostAddresses
// But if we don't throw here the socket could hang until timeout
// TODO(NODE-3483)
throw new error_1.MongoRuntimeError(`Unexpected HostAddress ${JSON.stringify(hostAddress)}`);
}
}
function parseSslOptions(options) {
const result = parseConnectOptions(options);
// Merge in valid SSL options
for (const name of exports.LEGAL_TLS_SOCKET_OPTIONS) {
if (options[name] != null) {
result[name] = options[name];
}
}
if (options.existingSocket) {
result.socket = options.existingSocket;
}
// Set default sni servername to be the same as host
if (result.servername == null && result.host && !net.isIP(result.host)) {
result.servername = result.host;
}
return result;
}
const SOCKET_ERROR_EVENT_LIST = ['error', 'close', 'timeout', 'parseError'];
const SOCKET_ERROR_EVENTS = new Set(SOCKET_ERROR_EVENT_LIST);
function makeConnection(options, _callback) {
var _a, _b, _c, _d, _e, _f, _g, _h, _j;
const useTLS = (_a = options.tls) !== null && _a !== void 0 ? _a : false;
const keepAlive = (_b = options.keepAlive) !== null && _b !== void 0 ? _b : true;
const socketTimeoutMS = (_d = (_c = options.socketTimeoutMS) !== null && _c !== void 0 ? _c : Reflect.get(options, 'socketTimeout')) !== null && _d !== void 0 ? _d : 0;
const noDelay = (_e = options.noDelay) !== null && _e !== void 0 ? _e : true;
const connectTimeoutMS = (_f = options.connectTimeoutMS) !== null && _f !== void 0 ? _f : 30000;
const rejectUnauthorized = (_g = options.rejectUnauthorized) !== null && _g !== void 0 ? _g : true;
const keepAliveInitialDelay = (_j = (((_h = options.keepAliveInitialDelay) !== null && _h !== void 0 ? _h : 120000) > socketTimeoutMS
? Math.round(socketTimeoutMS / 2)
: options.keepAliveInitialDelay)) !== null && _j !== void 0 ? _j : 120000;
const existingSocket = options.existingSocket;
let socket;
const callback = function (err, ret) {
if (err && socket) {
socket.destroy();
}
_callback(err, ret);
};
if (options.proxyHost != null) {
// Currently, only Socks5 is supported.
return makeSocks5Connection({
...options,
connectTimeoutMS // Should always be present for Socks5
}, callback);
}
if (useTLS) {
const tlsSocket = tls.connect(parseSslOptions(options));
if (typeof tlsSocket.disableRenegotiation === 'function') {
tlsSocket.disableRenegotiation();
}
socket = tlsSocket;
}
else if (existingSocket) {
// In the TLS case, parseSslOptions() sets options.socket to existingSocket,
// so we only need to handle the non-TLS case here (where existingSocket
// gives us all we need out of the box).
socket = existingSocket;
}
else {
socket = net.createConnection(parseConnectOptions(options));
}
socket.setKeepAlive(keepAlive, keepAliveInitialDelay);
socket.setTimeout(connectTimeoutMS);
socket.setNoDelay(noDelay);
const connectEvent = useTLS ? 'secureConnect' : 'connect';
let cancellationHandler;
function errorHandler(eventName) {
return (err) => {
SOCKET_ERROR_EVENTS.forEach(event => socket.removeAllListeners(event));
if (cancellationHandler && options.cancellationToken) {
options.cancellationToken.removeListener('cancel', cancellationHandler);
}
socket.removeListener(connectEvent, connectHandler);
callback(connectionFailureError(eventName, err));
};
}
function connectHandler() {
SOCKET_ERROR_EVENTS.forEach(event => socket.removeAllListeners(event));
if (cancellationHandler && options.cancellationToken) {
options.cancellationToken.removeListener('cancel', cancellationHandler);
}
if ('authorizationError' in socket) {
if (socket.authorizationError && rejectUnauthorized) {
return callback(socket.authorizationError);
}
}
socket.setTimeout(socketTimeoutMS);
callback(undefined, socket);
}
SOCKET_ERROR_EVENTS.forEach(event => socket.once(event, errorHandler(event)));
if (options.cancellationToken) {
cancellationHandler = errorHandler('cancel');
options.cancellationToken.once('cancel', cancellationHandler);
}
if (existingSocket) {
process.nextTick(connectHandler);
}
else {
socket.once(connectEvent, connectHandler);
}
}
function makeSocks5Connection(options, callback) {
var _a, _b;
const hostAddress = utils_1.HostAddress.fromHostPort((_a = options.proxyHost) !== null && _a !== void 0 ? _a : '', // proxyHost is guaranteed to set here
(_b = options.proxyPort) !== null && _b !== void 0 ? _b : 1080);
// First, connect to the proxy server itself:
makeConnection({
...options,
hostAddress,
tls: false,
proxyHost: undefined
}, (err, rawSocket) => {
if (err) {
return callback(err);
}
const destination = parseConnectOptions(options);
if (typeof destination.host !== 'string' || typeof destination.port !== 'number') {
return callback(new error_1.MongoInvalidArgumentError('Can only make Socks5 connections to TCP hosts'));
}
// Then, establish the Socks5 proxy connection:
socks_1.SocksClient.createConnection({
existing_socket: rawSocket,
timeout: options.connectTimeoutMS,
command: 'connect',
destination: {
host: destination.host,
port: destination.port
},
proxy: {
// host and port are ignored because we pass existing_socket
host: 'iLoveJavaScript',
port: 0,
type: 5,
userId: options.proxyUsername || undefined,
password: options.proxyPassword || undefined
}
}).then(({ socket }) => {
// Finally, now treat the resulting duplex stream as the
// socket over which we send and receive wire protocol messages:
makeConnection({
...options,
existingSocket: socket,
proxyHost: undefined
}, callback);
}, error => callback(connectionFailureError('error', error)));
});
}
function connectionFailureError(type, err) {
switch (type) {
case 'error':
return new error_1.MongoNetworkError(err);
case 'timeout':
return new error_1.MongoNetworkTimeoutError('connection timed out');
case 'close':
return new error_1.MongoNetworkError('connection closed');
case 'cancel':
return new error_1.MongoNetworkError('connection establishment was cancelled');
default:
return new error_1.MongoNetworkError('unknown network error');
}
}
//# sourceMappingURL=connect.js.map