const https = require('https');
const http = require('http');
const fs = require('fs');
const spawn = require('child_process').spawn;
const express = require('express');
const { createProxyMiddleware } = require('http-proxy-middleware');
const INJECTED_HTML = `
`;
const TARGET_URL = 'http://localhost:19000';
const SSL_CERT_PATH = '/data/certs/cert.pem';
const SSL_KEY_PATH = '/data/certs/key.pem';
const FORWARDED_ARGS = process.argv.slice(2);
// proxy logic
const app = express();
app.get('/', async (req, res) => {
try {
const response = await fetch(TARGET_URL);
const body = await response.text();
const newBody = body.replace('', `${INJECTED_HTML}`);
res.send(newBody);
} catch (e) {
console.error(e);
res.status(500).json(e);
}
});
app.get('/api/motd', (req, res) => {
// hide the "Latest News From Portainer"
// https://github.com/portainer/portainer/blob/master/app/portainer/views/home/home.html
res.json({});
});
app.use(createProxyMiddleware({
target: TARGET_URL,
ws: true,
}));
// http + https server
async function waitUntilCertAvailable() {
const sleep = (ms) => new Promise(r => setTimeout(r, ms));
while (!fs.existsSync(SSL_CERT_PATH)) {
await sleep(1000);
}
};
async function runServer() {
http.createServer(app).listen(9000);
await waitUntilCertAvailable();
https.createServer({
key: fs.readFileSync(SSL_KEY_PATH),
cert: fs.readFileSync(SSL_CERT_PATH),
}, app).listen(9443);
}
// child process for portainer
function runPortainer() {
const fwdArgs = FORWARDED_ARGS.join(' ');
console.log(`Launching portainer with args ${fwdArgs}`)
const child = spawn('/bin/sh', [
'-c',
`/portainer --bind=":19000" --bind-https=":19443" ${fwdArgs}`
]);
child.stdout.pipe(process.stdout);
child.stderr.pipe(process.stderr);
child.on('exit', function (code) {
console.log(`portainer exited with status code ${code}`);
process.exit(code);
});
process.on('SIGTERM', function () {
child.kill('SIGTERM');
});
}
// run it
runPortainer();
runServer();