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app.js
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285 lines (249 loc) · 9.11 KB
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const fs = require('fs');
const path = require('path');
const express = require('express');
const helmet = require('helmet');
const pino = require('pino');
const redis = require('redis');
const session = require('express-session');
const FileStore = require('session-file-store')(session);
const MemoryStore = require('memorystore')(session);
const SequelizeStore = require('connect-session-sequelize')(session.Store);
const RedisStore = require('connect-redis')(session);
const appLog = require('./lib/app-log');
const Webhooks = require('./lib/webhooks');
const bodyParser = require('body-parser');
const favicon = require('serve-favicon');
const passport = require('passport');
const authStrategies = require('./auth-strategies');
const sessionlessAuth = require('./middleware/sessionless-auth');
const ResponseUtils = require('./lib/response-utils');
const expressPinoLogger = require('express-pino-logger');
// This is a workaround till BigInt is fully supported by the standard
// See https://tc39.es/ecma262/#sec-ecmascript-language-types-bigint-type
// and https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt
// If this is not done, then a JSON.stringify(BigInt) throws
// "TypeError: Do not know how to serialize a BigInt"
/* global BigInt:writable */
/* eslint no-extend-native: ["error", { "exceptions": ["BigInt"] }] */
BigInt.prototype.toJSON = function () {
return this.toString();
};
/**
* Create an express app using config
* @param {object} config
*/
async function makeApp(config, models) {
if (typeof config.get !== 'function') {
throw new Error('config is required to create app');
}
if (!models) {
throw new Error('models is required to create app');
}
const webhooks = new Webhooks(config, models, appLog);
const expressPino = expressPinoLogger({
level: config.get('webLogLevel'),
timestamp: pino.stdTimeFunctions.isoTime,
name: 'sqlpad-web',
// express-pino-logger logs all the headers by default
// Removing these for now but open to adding them back in based on feedback
// enable x-forwarded-for header logging
// redact: {
// paths: [
// 'req.headers',
// 'res.headers',
// 'req.remoteAddress',
// 'req.remotePort',
// ],
// remove: true,
// },
});
/* Express setup
============================================================================= */
const app = express();
app.set('trust proxy', true);
// Default helmet protections, minus frameguard (becaue of sqlpad iframe embed), adding referrerPolicy
app.use(helmet.dnsPrefetchControl());
app.use(helmet.hidePoweredBy());
app.use(helmet.hsts({}));
app.use(helmet.ieNoOpen());
app.use(helmet.noSniff());
app.use(helmet.xssFilter());
app.use(helmet.referrerPolicy({ policy: 'same-origin' }));
// Decorate req and res with SQLPad objects and utils
app.use(function (req, res, next) {
req.config = config;
req.models = models;
req.appLog = appLog;
req.webhooks = webhooks;
res.utils = new ResponseUtils(res, next);
next();
});
app.use(expressPino);
// Use favicon middleware if favicon exists
// Thist just loads it and serves from memory
const icoPath = path.join(__dirname, '/public/favicon.ico');
if (fs.existsSync(icoPath)) {
app.use(favicon(icoPath));
}
app.use(
bodyParser.json({
limit: config.get('bodyLimit'),
})
);
app.use(
bodyParser.urlencoded({
extended: true,
})
);
const cookieMaxAgeMs = parseInt(config.get('sessionMinutes'), 10) * 60 * 1000;
const sessionOptions = {
saveUninitialized: false,
resave: true,
rolling: true,
cookie: { maxAge: cookieMaxAgeMs, sameSite: 'strict' },
secret: config.get('cookieSecret'),
name: config.get('cookieName'),
};
// Toggle secure flag for cookies if we're running under HTTPS
const publicUrl = config.get('publicUrl');
if (publicUrl && /^https/.test(publicUrl)) {
sessionOptions.cookie.secure = true;
}
const sessionStore = config.get('sessionStore').toLowerCase();
switch (sessionStore) {
case 'file': {
const sessionPath = path.join(config.get('dbPath'), '/sessions');
sessionOptions.store = new FileStore({
path: sessionPath,
logFn: () => {},
});
break;
}
case 'memory': {
sessionOptions.store = new MemoryStore({
checkPeriod: cookieMaxAgeMs,
});
break;
}
case 'database': {
sessionOptions.store = new SequelizeStore({
db: models.sequelizeDb.sequelize,
table: 'Sessions',
});
// SequelizeStore supports the touch method so per the express-session docs this should be set to false
sessionOptions.resave = false;
// SequelizeStore docs mention setting this to true if SSL is done outside of Node
// Not sure we have any way of knowing based on current config
// sessionOptions.proxy = true;
break;
}
case 'redis': {
const redisClient = redis.createClient(config.get('redisUri'));
sessionOptions.store = new RedisStore({ client: redisClient });
sessionOptions.resave = false;
break;
}
default: {
throw new Error(`Invalid session store ${sessionStore}`);
}
}
app.use(session(sessionOptions));
const baseUrl = config.get('baseUrl');
app.use(baseUrl, express.static(path.join(__dirname, 'public')));
/* Passport setup
============================================================================= */
await authStrategies(config, models);
app.use(passport.initialize());
app.use(passport.session());
/* Routes
============================================================================= */
const preAuthRouters = [
require('./routes/password-reset'),
require('./routes/signout'),
require('./routes/signup'),
require('./routes/signin'),
require('./routes/google-auth'),
require('./routes/auth-oidc'),
require('./routes/saml'),
];
// Add pre-auth routes to app
preAuthRouters.forEach((router) => app.use(baseUrl, router));
// Add sessionless authentication middleware
// This handles things like HTTP basic, auth proxy, disable auth, and JWT service tokens
// These attempt to authenticate the request based on information passed every request
// They do not persist a session
app.use(sessionlessAuth);
const authRequiredRouters = [
require('./routes/statement-results'),
require('./routes/queries'),
require('./routes/drivers'),
require('./routes/users'),
require('./routes/connections'),
require('./routes/connection-accesses'),
require('./routes/connection-clients'),
require('./routes/connection-schema'),
require('./routes/test-connection'),
require('./routes/query-history'),
require('./routes/schema-info'),
require('./routes/tags'),
require('./routes/format-sql'),
require('./routes/service-tokens'),
require('./routes/batches'),
require('./routes/statements'),
];
// Add all core routes to the baseUrl except for the */api/app route
authRequiredRouters.forEach((router) => app.use(baseUrl, router));
// Add '*/api/app' route last and without baseUrl
app.use(require('./routes/app'));
// For any missing api route, return a 404
// NOTE - this cannot be a general catch-all because it might be a valid non-api route from a front-end perspective
app.use(baseUrl + '/api/', function (req, res) {
req.log.debug('reached catch all api route');
return res.utils.notFound();
});
// Add an error handler for /api
app.use(baseUrl + '/api/', function (err, req, res, next) {
if (res.headersSent) {
return next(err);
}
appLog.error(err);
if (err && err.type === 'entity.too.large') {
return res.status(413).json({
title: 'Payload Too Large',
});
}
return res.status(500).json({
title: 'Internal Server Error',
});
});
// Anything else should render the client-side app
// Client-side routing will take care of things from here
// Because index.html will be served via static plugin,
// we need to rename it to something else and switch out the URLs to consider the baseUrl
const indexPath = path.join(__dirname, 'public/index.html');
const indexTemplatePath = path.join(__dirname, 'public/index-template.html');
if (fs.existsSync(indexPath)) {
fs.renameSync(indexPath, indexTemplatePath);
}
if (fs.existsSync(indexTemplatePath)) {
const html = fs.readFileSync(indexTemplatePath, 'utf8');
const baseUrlHtml = html
.replace(/="\/assets/g, `="${baseUrl}/assets`)
.replace(/="\/stylesheets/g, `="${baseUrl}/stylesheets`)
.replace(/="\/javascripts/g, `="${baseUrl}/javascripts`)
.replace(/="\/images/g, `="${baseUrl}/images`)
.replace(/="\/favicon/g, `="${baseUrl}/favicon`)
.replace(/="\/fonts/g, `="${baseUrl}/fonts`)
.replace(/="\/static/g, `="${baseUrl}/static`);
app.use((req, res) => res.send(baseUrlHtml));
} else {
const msg = `No UI template detected. Build client/ and copy files to server/public/`;
appLog.warn(msg);
app.use((req, res) => {
appLog.warn(msg);
res.status(404).send(msg);
});
}
return app;
}
module.exports = makeApp;