balena-cli/lib/utils/tunnel.ts
Pagan Gazzard 303c3af061 Switch from Bluebird.join to native version
Change-type: patch
2020-06-30 23:59:18 +01:00

127 lines
3.4 KiB
TypeScript

/*
Copyright 2019 Balena
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
import type { BalenaSDK } from 'balena-sdk';
import * as Bluebird from 'bluebird';
import { Socket } from 'net';
import { TypedError } from 'typed-error';
const PROXY_CONNECT_TIMEOUT_MS = 10000;
class UnableToConnectError extends TypedError {
public status: string;
public statusCode: string;
constructor(statusCode: string, status: string) {
super(`Unable to connect: ${statusCode} ${status}`);
this.status = status;
this.statusCode = statusCode;
}
}
class RemoteSocketNotListening extends TypedError {
public port: number;
constructor(port: number) {
super(`Device is not listening on port ${port}`);
}
}
export const tunnelConnectionToDevice = (
uuid: string,
port: number,
sdk: BalenaSDK,
) => {
return Bluebird.props({
vpnUrl: sdk.settings.get('vpnUrl'),
whoami: sdk.auth.whoami(),
token: sdk.auth.getToken(),
}).then(({ vpnUrl, whoami, token }) => {
const auth = {
user: whoami || 'root',
password: token,
};
return (client: Socket): Promise<void> =>
openPortThroughProxy(vpnUrl, 3128, auth, uuid, port)
.then((remote) => {
client.pipe(remote);
remote.pipe(client);
remote.on('error', (err) => {
console.error('Remote: ' + err);
client.end();
});
client.on('error', (err) => {
console.error('Client: ' + err);
remote.end();
});
remote.on('close', () => {
client.end();
});
client.on('close', () => {
remote.end();
});
})
.catch((e) => {
client.end();
throw e;
});
});
};
const openPortThroughProxy = (
proxyServer: string,
proxyPort: number,
proxyAuth: { user: string; password: string } | null,
deviceUuid: string,
devicePort: number,
) => {
const httpHeaders = [`CONNECT ${deviceUuid}.balena:${devicePort} HTTP/1.0`];
if (proxyAuth !== null) {
const credentials = Buffer.from(
`${proxyAuth.user}:${proxyAuth.password}`,
).toString('base64');
httpHeaders.push(`Proxy-Authorization: Basic ${credentials}`);
}
return new Promise<Socket>((resolve, reject) => {
const proxyTunnel = new Socket();
proxyTunnel.on('error', reject);
proxyTunnel.connect(proxyPort, proxyServer, () => {
const proxyConnectionHandler = (data: Buffer) => {
proxyTunnel.removeListener('data', proxyConnectionHandler);
const [httpStatus] = data.toString('utf8').split('\r\n');
const [, httpStatusCode, ...httpMessage] = httpStatus.split(' ');
if (parseInt(httpStatusCode, 10) === 200) {
proxyTunnel.setTimeout(0);
resolve(proxyTunnel);
} else {
reject(
new UnableToConnectError(httpStatusCode, httpMessage.join(' ')),
);
}
};
proxyTunnel.on('timeout', () => {
reject(new RemoteSocketNotListening(devicePort));
});
proxyTunnel.on('data', proxyConnectionHandler);
proxyTunnel.setTimeout(PROXY_CONNECT_TIMEOUT_MS);
proxyTunnel.write(httpHeaders.join('\r\n').concat('\r\n\r\n'));
});
});
};