chore: lint ./app/server/app.js still TODO for stop function #242
This commit is contained in:
Bill Church
parent
36e4e68a16
commit
ec2fcfb418
1 changed files with 134 additions and 125 deletions
|
|
@ -1,30 +1,30 @@
|
|||
'use strict'
|
||||
/* jshint esversion: 6, asi: true, node: true */
|
||||
/* eslint no-unused-expressions: ["error", { "allowShortCircuit": true, "allowTernary": true }] */
|
||||
/* eslint no-unused-expressions: ["error", { "allowShortCircuit": true, "allowTernary": true }],
|
||||
no-console: ["error", { allow: ["warn", "error"] }] */
|
||||
// app.js
|
||||
|
||||
const path = require('path')
|
||||
const fs = require('fs')
|
||||
const nodeRoot = path.dirname(require.main.filename)
|
||||
const configPath = path.join(nodeRoot, 'config.json')
|
||||
const publicPath = path.join(nodeRoot, 'client', 'public')
|
||||
console.log('WebSSH2 service reading config from: ' + configPath)
|
||||
const express = require('express')
|
||||
const logger = require('morgan')
|
||||
const path = require('path');
|
||||
const fs = require('fs');
|
||||
|
||||
const nodeRoot = path.dirname(require.main.filename);
|
||||
const configPath = path.join(nodeRoot, 'config.json');
|
||||
const publicPath = path.join(nodeRoot, 'client', 'public');
|
||||
const express = require('express');
|
||||
const logger = require('morgan');
|
||||
|
||||
// sane defaults if config.json or parts are missing
|
||||
let config = {
|
||||
listen: {
|
||||
ip: '0.0.0.0',
|
||||
port: 2222
|
||||
port: 2222,
|
||||
},
|
||||
http: {
|
||||
origins: ['localhost:2222']
|
||||
origins: ['localhost:2222'],
|
||||
},
|
||||
user: {
|
||||
name: null,
|
||||
password: null,
|
||||
privatekey: null
|
||||
privatekey: null,
|
||||
},
|
||||
ssh: {
|
||||
host: null,
|
||||
|
|
@ -33,25 +33,25 @@ let config = {
|
|||
readyTimeout: 20000,
|
||||
keepaliveInterval: 120000,
|
||||
keepaliveCountMax: 10,
|
||||
allowedSubnets: []
|
||||
allowedSubnets: [],
|
||||
},
|
||||
terminal: {
|
||||
cursorBlink: true,
|
||||
scrollback: 10000,
|
||||
tabStopWidth: 8,
|
||||
bellStyle: 'sound'
|
||||
bellStyle: 'sound',
|
||||
},
|
||||
header: {
|
||||
text: null,
|
||||
background: 'green'
|
||||
background: 'green',
|
||||
},
|
||||
session: {
|
||||
name: 'WebSSH2',
|
||||
secret: 'mysecret'
|
||||
secret: 'mysecret',
|
||||
},
|
||||
options: {
|
||||
challengeButton: true,
|
||||
allowreauth: true
|
||||
allowreauth: true,
|
||||
},
|
||||
algorithms: {
|
||||
kex: [
|
||||
|
|
@ -59,7 +59,7 @@ let config = {
|
|||
'ecdh-sha2-nistp384',
|
||||
'ecdh-sha2-nistp521',
|
||||
'diffie-hellman-group-exchange-sha256',
|
||||
'diffie-hellman-group14-sha1'
|
||||
'diffie-hellman-group14-sha1',
|
||||
],
|
||||
cipher: [
|
||||
'aes128-ctr',
|
||||
|
|
@ -69,42 +69,43 @@ let config = {
|
|||
'aes128-gcm@openssh.com',
|
||||
'aes256-gcm',
|
||||
'aes256-gcm@openssh.com',
|
||||
'aes256-cbc'
|
||||
'aes256-cbc',
|
||||
],
|
||||
hmac: [
|
||||
'hmac-sha2-256',
|
||||
'hmac-sha2-512',
|
||||
'hmac-sha1'
|
||||
'hmac-sha1',
|
||||
],
|
||||
compress: [
|
||||
'none',
|
||||
'zlib@openssh.com',
|
||||
'zlib'
|
||||
]
|
||||
'zlib',
|
||||
],
|
||||
},
|
||||
serverlog: {
|
||||
client: false,
|
||||
server: false
|
||||
server: false,
|
||||
},
|
||||
accesslog: false,
|
||||
verify: false,
|
||||
safeShutdownDuration: 300
|
||||
}
|
||||
safeShutdownDuration: 300,
|
||||
};
|
||||
|
||||
// test if config.json exists, if not provide error message but try to run
|
||||
// anyway
|
||||
try {
|
||||
if (fs.existsSync(configPath)) {
|
||||
console.log('ephemeral_auth service reading config from: ' + configPath)
|
||||
// eslint-disable-next-line no-console
|
||||
console.log(`webssh2 service reading config from: ${configPath}`);
|
||||
config = require('read-config-ng')(configPath) // eslint-disable-line
|
||||
} else {
|
||||
console.error('\n\nERROR: Missing config.json for webssh. Current config: ' + JSON.stringify(config))
|
||||
console.error('\n See config.json.sample for details\n\n')
|
||||
console.error(`\n\nERROR: Missing config.json for webssh. Current config: ${JSON.stringify(config)}`);
|
||||
console.error('\n See config.json.sample for details\n\n');
|
||||
}
|
||||
} catch (err) {
|
||||
console.error('\n\nERROR: Missing config.json for webssh. Current config: ' + JSON.stringify(config))
|
||||
console.error('\n See config.json.sample for details\n\n')
|
||||
console.error('ERROR:\n\n ' + err)
|
||||
console.error(`\n\nERROR: Missing config.json for webssh. Current config: ${JSON.stringify(config)}`);
|
||||
console.error('\n See config.json.sample for details\n\n');
|
||||
console.error(`ERROR:\n\n ${err}`);
|
||||
}
|
||||
|
||||
const session = require('express-session')({
|
||||
|
|
@ -112,150 +113,158 @@ const session = require('express-session')({
|
|||
name: config.session.name,
|
||||
resave: true,
|
||||
saveUninitialized: false,
|
||||
unset: 'destroy'
|
||||
})
|
||||
const app = express()
|
||||
const server = require('http').Server(app)
|
||||
const myutil = require('./util')
|
||||
myutil.setDefaultCredentials(config.user.name, config.user.password, config.user.privatekey)
|
||||
const validator = require('validator')
|
||||
const io = require('socket.io')(server, { serveClient: false, path: '/ssh/socket.io', origins: config.http.origins })
|
||||
const socket = require('./socket')
|
||||
const expressOptions = require('./expressOptions')
|
||||
const favicon = require('serve-favicon')
|
||||
unset: 'destroy',
|
||||
});
|
||||
|
||||
const app = express();
|
||||
const server = require('http').Server(app);
|
||||
|
||||
const validator = require('validator');
|
||||
const io = require('socket.io')(server, { serveClient: false, path: '/ssh/socket.io', origins: config.http.origins });
|
||||
const favicon = require('serve-favicon');
|
||||
const socket = require('./socket');
|
||||
const expressOptions = require('./expressOptions');
|
||||
const myutil = require('./util');
|
||||
|
||||
myutil.setDefaultCredentials(config.user.name, config.user.password, config.user.privatekey);
|
||||
// express
|
||||
app.use(safeShutdownGuard)
|
||||
app.use(session)
|
||||
app.use(myutil.basicAuth)
|
||||
if (config.accesslog) app.use(logger('common'))
|
||||
app.disable('x-powered-by')
|
||||
app.use(safeShutdownGuard);
|
||||
app.use(session);
|
||||
app.use(myutil.basicAuth);
|
||||
if (config.accesslog) app.use(logger('common'));
|
||||
app.disable('x-powered-by');
|
||||
|
||||
// static files
|
||||
app.use('/ssh', express.static(publicPath, expressOptions))
|
||||
app.use('/ssh', express.static(publicPath, expressOptions));
|
||||
|
||||
// favicon from root if being pre-fetched by browser to prevent a 404
|
||||
app.use(favicon(path.join(publicPath, 'favicon.ico')))
|
||||
app.use(favicon(path.join(publicPath, 'favicon.ico')));
|
||||
|
||||
app.get('/ssh/reauth', function (req, res, next) {
|
||||
const r = req.headers.referer || '/'
|
||||
res.status(401).send('<!DOCTYPE html><html><head><meta http-equiv="refresh" content="0; url=' + r + '"></head><body bgcolor="#000"></body></html>')
|
||||
})
|
||||
app.get('/ssh/reauth', (req, res, next) => {
|
||||
const r = req.headers.referer || '/';
|
||||
res.status(401).send(`<!DOCTYPE html><html><head><meta http-equiv="refresh" content="0; url=${r}"></head><body bgcolor="#000"></body></html>`);
|
||||
next();
|
||||
});
|
||||
|
||||
// eslint-disable-next-line complexity
|
||||
app.get('/ssh/host/:host?', function (req, res, next) {
|
||||
res.sendFile(path.join(path.join(publicPath, 'client.htm')))
|
||||
app.get('/ssh/host/:host?', (req, res, next) => {
|
||||
res.sendFile(path.join(path.join(publicPath, 'client.htm')));
|
||||
// capture, assign, and validated variables
|
||||
req.session.ssh = {
|
||||
host: config.ssh.host || (validator.isIP(req.params.host + '') && req.params.host) ||
|
||||
(validator.isFQDN(req.params.host) && req.params.host) ||
|
||||
(/^(([a-z]|[A-Z]|[0-9]|[!^(){}\-_~])+)?\w$/.test(req.params.host) &&
|
||||
req.params.host),
|
||||
port: (validator.isInt(req.query.port + '', { min: 1, max: 65535 }) &&
|
||||
req.query.port) || config.ssh.port,
|
||||
host: config.ssh.host || (validator.isIP(`${req.params.host}`) && req.params.host)
|
||||
|| (validator.isFQDN(req.params.host) && req.params.host)
|
||||
|| (/^(([a-z]|[A-Z]|[0-9]|[!^(){}\-_~])+)?\w$/.test(req.params.host)
|
||||
&& req.params.host),
|
||||
port: (validator.isInt(`${req.query.port}`, { min: 1, max: 65535 })
|
||||
&& req.query.port) || config.ssh.port,
|
||||
localAddress: config.ssh.localAddress,
|
||||
localPort: config.ssh.localPort,
|
||||
header: {
|
||||
name: req.query.header || config.header.text,
|
||||
background: req.query.headerBackground || config.header.background
|
||||
background: req.query.headerBackground || config.header.background,
|
||||
},
|
||||
algorithms: config.algorithms,
|
||||
keepaliveInterval: config.ssh.keepaliveInterval,
|
||||
keepaliveCountMax: config.ssh.keepaliveCountMax,
|
||||
allowedSubnets: config.ssh.allowedSubnets,
|
||||
term: (/^(([a-z]|[A-Z]|[0-9]|[!^(){}\-_~])+)?\w$/.test(req.query.sshterm) &&
|
||||
req.query.sshterm) || config.ssh.term,
|
||||
term: (/^(([a-z]|[A-Z]|[0-9]|[!^(){}\-_~])+)?\w$/.test(req.query.sshterm)
|
||||
&& req.query.sshterm) || config.ssh.term,
|
||||
terminal: {
|
||||
cursorBlink: (validator.isBoolean(req.query.cursorBlink + '') ? myutil.parseBool(req.query.cursorBlink) : config.terminal.cursorBlink),
|
||||
scrollback: (validator.isInt(req.query.scrollback + '', { min: 1, max: 200000 }) && req.query.scrollback) ? req.query.scrollback : config.terminal.scrollback,
|
||||
tabStopWidth: (validator.isInt(req.query.tabStopWidth + '', { min: 1, max: 100 }) && req.query.tabStopWidth) ? req.query.tabStopWidth : config.terminal.tabStopWidth,
|
||||
bellStyle: ((req.query.bellStyle) && (['sound', 'none'].indexOf(req.query.bellStyle) > -1)) ? req.query.bellStyle : config.terminal.bellStyle
|
||||
cursorBlink: (validator.isBoolean(`${req.query.cursorBlink}`) ? myutil.parseBool(req.query.cursorBlink) : config.terminal.cursorBlink),
|
||||
scrollback: (validator.isInt(`${req.query.scrollback}`, { min: 1, max: 200000 }) && req.query.scrollback) ? req.query.scrollback : config.terminal.scrollback,
|
||||
tabStopWidth: (validator.isInt(`${req.query.tabStopWidth}`, { min: 1, max: 100 }) && req.query.tabStopWidth) ? req.query.tabStopWidth : config.terminal.tabStopWidth,
|
||||
bellStyle: ((req.query.bellStyle) && (['sound', 'none'].indexOf(req.query.bellStyle) > -1)) ? req.query.bellStyle : config.terminal.bellStyle,
|
||||
},
|
||||
allowreplay: config.options.challengeButton || (validator.isBoolean(req.headers.allowreplay + '') ? myutil.parseBool(req.headers.allowreplay) : false),
|
||||
allowreplay: config.options.challengeButton || (validator.isBoolean(`${req.headers.allowreplay}`) ? myutil.parseBool(req.headers.allowreplay) : false),
|
||||
allowreauth: config.options.allowreauth || false,
|
||||
mrhsession: ((validator.isAlphanumeric(req.headers.mrhsession + '') && req.headers.mrhsession) ? req.headers.mrhsession : 'none'),
|
||||
mrhsession: ((validator.isAlphanumeric(`${req.headers.mrhsession}`) && req.headers.mrhsession) ? req.headers.mrhsession : 'none'),
|
||||
serverlog: {
|
||||
client: config.serverlog.client || false,
|
||||
server: config.serverlog.server || false
|
||||
server: config.serverlog.server || false,
|
||||
},
|
||||
readyTimeout: (validator.isInt(req.query.readyTimeout + '', { min: 1, max: 300000 }) &&
|
||||
req.query.readyTimeout) || config.ssh.readyTimeout
|
||||
}
|
||||
if (req.session.ssh.header.name) validator.escape(req.session.ssh.header.name)
|
||||
if (req.session.ssh.header.background) validator.escape(req.session.ssh.header.background)
|
||||
})
|
||||
readyTimeout: (validator.isInt(`${req.query.readyTimeout}`, { min: 1, max: 300000 })
|
||||
&& req.query.readyTimeout) || config.ssh.readyTimeout,
|
||||
};
|
||||
if (req.session.ssh.header.name) validator.escape(req.session.ssh.header.name);
|
||||
if (req.session.ssh.header.background) validator.escape(req.session.ssh.header.background);
|
||||
});
|
||||
|
||||
// express error handling
|
||||
app.use(function (req, res, next) {
|
||||
res.status(404).send("Sorry can't find that!")
|
||||
})
|
||||
app.use((req, res, next) => {
|
||||
res.status(404).send("Sorry can't find that!");
|
||||
next();
|
||||
});
|
||||
|
||||
app.use(function (err, req, res, next) {
|
||||
console.error(err.stack)
|
||||
res.status(500).send('Something broke!')
|
||||
})
|
||||
app.use((err, req, res, next) => {
|
||||
console.error(err.stack);
|
||||
res.status(500).send('Something broke!');
|
||||
next();
|
||||
});
|
||||
|
||||
// socket.io
|
||||
// expose express session with socket.request.session
|
||||
io.use(function (socket, next) {
|
||||
io.use((socket, next) => {
|
||||
(socket.request.res)
|
||||
? session(socket.request, socket.request.res, next)
|
||||
: next(next) // eslint disable-line
|
||||
})
|
||||
: next(next); // eslint disable-line
|
||||
});
|
||||
|
||||
// bring up socket
|
||||
io.on('connection', socket)
|
||||
io.on('connection', socket);
|
||||
|
||||
// safe shutdown
|
||||
let shutdownMode = false
|
||||
let shutdownInterval = 0
|
||||
let connectionCount = 0
|
||||
let shutdownMode = false;
|
||||
let shutdownInterval = 0;
|
||||
let connectionCount = 0;
|
||||
|
||||
function safeShutdownGuard (req, res, next) {
|
||||
if (shutdownMode) res.status(503).end('Service unavailable: Server shutting down')
|
||||
else return next()
|
||||
function safeShutdownGuard(req, res, next) {
|
||||
if (shutdownMode) res.status(503).end('Service unavailable: Server shutting down');
|
||||
else return next();
|
||||
}
|
||||
|
||||
io.on('connection', function (socket) {
|
||||
connectionCount++
|
||||
io.on('connection', (socket) => {
|
||||
connectionCount += 1;
|
||||
|
||||
socket.on('disconnect', function () {
|
||||
if ((--connectionCount <= 0) && shutdownMode) {
|
||||
stop('All clients disconnected')
|
||||
socket.on('disconnect', () => {
|
||||
connectionCount -= 1;
|
||||
if ((connectionCount <= 0) && shutdownMode) {
|
||||
stop('All clients disconnected');
|
||||
}
|
||||
})
|
||||
})
|
||||
});
|
||||
});
|
||||
|
||||
const signals = ['SIGTERM', 'SIGINT']
|
||||
signals.forEach(signal => process.on(signal, function () {
|
||||
if (shutdownMode) stop('Safe shutdown aborted, force quitting')
|
||||
const signals = ['SIGTERM', 'SIGINT'];
|
||||
signals.forEach((signal) => process.on(signal, () => {
|
||||
if (shutdownMode) stop('Safe shutdown aborted, force quitting');
|
||||
else if (connectionCount > 0) {
|
||||
let remainingSeconds = config.safeShutdownDuration
|
||||
shutdownMode = true
|
||||
let remainingSeconds = config.safeShutdownDuration;
|
||||
shutdownMode = true;
|
||||
const message = (connectionCount === 1)
|
||||
? ' client is still connected'
|
||||
: ' clients are still connected'
|
||||
console.error(connectionCount + message)
|
||||
console.error('Starting a ' + remainingSeconds + ' seconds countdown')
|
||||
console.error('Press Ctrl+C again to force quit')
|
||||
: ' clients are still connected';
|
||||
console.error(connectionCount + message);
|
||||
console.error(`Starting a ${remainingSeconds} seconds countdown`);
|
||||
console.error('Press Ctrl+C again to force quit');
|
||||
|
||||
shutdownInterval = setInterval(function () {
|
||||
if ((remainingSeconds--) <= 0) {
|
||||
stop('Countdown is over')
|
||||
shutdownInterval = setInterval(() => {
|
||||
remainingSeconds -= 1;
|
||||
if ((remainingSeconds) <= 0) {
|
||||
stop('Countdown is over');
|
||||
} else {
|
||||
io.sockets.emit('shutdownCountdownUpdate', remainingSeconds)
|
||||
io.sockets.emit('shutdownCountdownUpdate', remainingSeconds);
|
||||
}
|
||||
}, 1000)
|
||||
} else stop()
|
||||
}))
|
||||
}, 1000);
|
||||
} else stop();
|
||||
}));
|
||||
|
||||
// clean stop
|
||||
function stop (reason) {
|
||||
shutdownMode = false
|
||||
if (reason) console.log('Stopping: ' + reason)
|
||||
if (shutdownInterval) clearInterval(shutdownInterval)
|
||||
io.close()
|
||||
server.close()
|
||||
function stop(reason) {
|
||||
shutdownMode = false;
|
||||
// eslint-disable-next-line no-console
|
||||
if (reason) console.log(`Stopping: ${reason}`);
|
||||
if (shutdownInterval) clearInterval(shutdownInterval);
|
||||
io.close();
|
||||
server.close();
|
||||
}
|
||||
|
||||
module.exports = { server: server, config: config }
|
||||
module.exports = { server, config };
|
||||
|
|
|
|||
Loading…
Reference in a new issue