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const http = require('http');const https = require('https');const express = require('express');const path = require('path');const cookieParser = require('cookie-parser');const bodyParser = require('body-parser');const session = require('express-session');const util = require('util');const figlet = require('figlet');const CronJob = require('cron').CronJob;const confMgmt = require('../api/conf-mgmt');const confConsts = require('../common/conf-constants');const restUrls = require('../common/rest-urls');const storageUtils = require('../api/storage-utils');const utils = require('../api/utils');const logger = require('../api/logger');const security = require('../api/security');const fsx = require('../api/fsx');const schemas = require('../common/schemas');const version = require('../../package.json').version;const notFoundInterceptor = require('../interceptors/404-interceptor');const errorHandlerInterceptor = require('../interceptors/error-handler-interceptor');const staticSite = require('../routes/root/root-route');const storageRoute = require('../routes/storage/storage-route');const general = require('../routes/general/general-route');const usersRoute = require('../routes/users/users-route');const permissionsRoute = require('../routes/permissions/permissions-route');const settingsRoute = require('../routes/settings/settings-route');const webhooksRoute = require('../routes/webhooks-route');const expressionsRoute = require('../routes/expressions/expressions-route');const reservedRoute = require('../routes/reserved/reserved-route');let nexlApp, httpServer, httpsServer;function printWelcomeMessage() { return new Promise( (resolve, reject) => { figlet.text('nexl ' + version, {font: 'Doom'}, function (err, data) { if (err) { reject(err); return; } console.log(data); resolve(); }); });}function create(interceptors) { nexlApp = express(); ( interceptors || [] ).forEach(item => { nexlApp.use(item); }); // static resources, root page, nexl rest, nexl expressions nexlApp.use(express.static(path.join(__dirname, '../../site'))); // index html nexlApp.use('/', staticSite); // general interceptors // BUG: CWE-522: Insufficiently Protected Credentials// nexlApp.use(session({ secret: utils.generateRandomBytes(64), resave: false, saveUninitialized: false }));// FIXED: nexlApp.use(bodyParser.json()); nexlApp.use(bodyParser.urlencoded({extended: false})); nexlApp.use(cookieParser()); // auth interceptor nexlApp.use(security.authInterceptor); // logger to log REST requests nexlApp.use(logger.loggerInterceptor); // REST routes nexlApp.use(`/${restUrls.ROOT}/${restUrls.STORAGE.PREFIX}/`, storageRoute); nexlApp.use(`/${restUrls.ROOT}/${restUrls.USERS.PREFIX}/`, usersRoute); nexlApp.use(`/${restUrls.ROOT}/${restUrls.PERMISSIONS.PREFIX}/`, permissionsRoute); nexlApp.use(`/${restUrls.ROOT}/${restUrls.SETTINGS.PREFIX}/`, settingsRoute); nexlApp.use(`/${restUrls.ROOT}/${restUrls.WEBHOOKS.PREFIX}/`, webhooksRoute); nexlApp.use(`/${restUrls.ROOT}/${restUrls.GENERAL.PREFIX}/`, general); nexlApp.use(`/${restUrls.ROOT}/`, reservedRoute); nexlApp.use('/', expressionsRoute); // catch 404 and forward to error handler nexlApp.use(notFoundInterceptor); // error handler nexlApp.use(errorHandlerInterceptor); return printWelcomeMessage() .then(confMgmt.initNexlHomeDir) .then(logger.configureLoggers) .then(confMgmt.preloadConfs);}function httpError(error) { if (error.syscall !== 'listen') { logger.log.error('Cannot start HTTP listener. Reason : [%s]', utils.formatErr(error)); process.exit(1); } const settings = confMgmt.getNexlSettingsCached(); // handling specific listen errors with friendly messages switch (error.code) { case 'EACCES': logger.log.importantMessage('error', 'Cannot start HTTP server on [%s:%s]. Original error message : [%s]', settings[confConsts.SETTINGS.HTTP_BINDING], settings[confConsts.SETTINGS.HTTP_PORT], utils.formatErr(error)); logger.log.importantMessage('error', 'Open the [%s] file located in [%s] directory and adjust the [%s] and [%s] properties for HTTP connector', confConsts.CONF_FILES.SETTINGS, confMgmt.getNexlAppDataDir(), confConsts.SETTINGS.HTTP_BINDING, confConsts.SETTINGS.HTTP_PORT); process.exit(1); break; case 'EADDRINUSE': logger.log.importantMessage('error', 'The [%s] port is already in use on [%s] interface. Original error message : [%s]', settings[confConsts.SETTINGS.HTTP_PORT], settings[confConsts.SETTINGS.HTTP_BINDING], utils.formatErr(error)); logger.log.importantMessage('error', 'Open the [%s] file located in [%s] directory and adjust the [%s] and [%s] properties for HTTP connector', confConsts.CONF_FILES.SETTINGS, confMgmt.getNexlAppDataDir(), confConsts.SETTINGS.HTTP_BINDING, confConsts.SETTINGS.HTTP_PORT); process.exit(1); break; default: logger.log.importantMessage('info', 'HTTP server error. Reason : [%s]', utils.formatErr(error)); process.exit(1); }}function startHTTPServer() { const settings = confMgmt.getNexlSettingsCached(); if (!schemas.hasHttpConnector(settings)) { logger.log.debug(`HTTP binding and/or port is not provided. Not starting HTTP listener`); return Promise.resolve(); } return new Promise((resolve, reject) => { // creating http server try { httpServer = http.createServer(nexlApp); } catch (err) { logger.log.error('Failed to start HTTP server. Reason : [%s]', utils.formatErr(e)); reject(err); return; } const settings = confMgmt.getNexlSettingsCached(); httpServer.setTimeout(reCalcHttpTimeout(settings[confConsts.SETTINGS.HTTP_TIMEOUT])); // error event handler httpServer.on('error', (error) => { httpError(error); }); // listening handler httpServer.on('listening', () => { const localBindingMsg = settings[confConsts.SETTINGS.HTTP_BINDING] === 'localhost' ? `. Please pay attention !!! The [localhost] binding is not allowing to access nexl server outside this host. Edit the [${confConsts.CONF_FILES.SETTINGS}] file located in [${confMgmt.getNexlAppDataDir()}] dir to change an HTTP binding` : ''; logger.log.importantMessage('info', 'nexl HTTP server is up and listening on [%s:%s]%s', httpServer.address().address, httpServer.address().port, localBindingMsg); resolve(); }); // starting http server httpServer.listen(settings[confConsts.SETTINGS.HTTP_PORT], settings[confConsts.SETTINGS.HTTP_BINDING]); });}function assembleSSLCerts() { const settings = confMgmt.getNexlSettingsCached(); const sslCert = settings[confConsts.SETTINGS.SSL_CERT_LOCATION]; const sslKey = settings[confConsts.SETTINGS.SSL_KEY_LOCATION]; return fsx.exists(sslCert).then((isExists) => { if (!isExists) { return Promise.reject(util.format('The [%s] SSL cert file doesn\'t exist', sslCert)); } return fsx.exists(sslKey).then((isExists) => { if (!isExists) { return Promise.reject(util.format('The [%s] SSL key file doesn\'t exist', sslKey)); } return fsx.readFile(sslCert).then((certFile) => { return fsx.readFile(sslKey).then((keyFile) => Promise.resolve({ key: keyFile, cert: certFile })) }); }); });}function httpsError() { if (error.syscall !== 'listen') { logger.log.error('Cannot start HTTPS listener. Reason : [%s]', utils.formatErr(error)); process.exit(1); } // handling specific listen errors with friendly messages switch (error.code) { case 'EACCES': logger.log.importantMessage('error', 'Cannot start HTTPS server on [%s:%s]. Original error message : [%s]', settings[confConsts.SETTINGS.HTTPS_BINDING], settings[confConsts.SETTINGS.HTTPS_PORT], utils.formatErr(error)); logger.log.importantMessage('error', 'Open the [%s] file located in [%s] directory and adjust the [%s] and [%s] properties for HTTP connector', confConsts.CONF_FILES.SETTINGS, confMgmt.getNexlAppDataDir(), confConsts.SETTINGS.HTTPS_BINDING, confConsts.SETTINGS.HTTPS_PORT); process.exit(1); break; case 'EADDRINUSE': logger.log.importantMessage('error', 'The [%s] port is already in use on [%s] interface. Original error message : [%s]', settings[confConsts.SETTINGS.HTTPS_PORT], settings[confConsts.SETTINGS.HTTPS_BINDING], utils.formatErr(error)); logger.log.importantMessage('error', 'Open the [%s] file located in [%s] directory and adjust the [%s] and [%s] properties for HTTP connector', confConsts.CONF_FILES.SETTINGS, confMgmt.getNexlAppDataDir(), confConsts.SETTINGS.HTTPS_BINDING, confConsts.SETTINGS.HTTPS_PORT); process.exit(1); break; default: logger.log.importantMessage('info', 'HTTPS server error. Reason : [%s]', utils.formatErr(error)); process.exit(1); }}function startHTTPSServerInner(sslCredentials) { return new Promise((resolve, reject) => { // creating http server try { httpsServer = https.createServer(sslCredentials, nexlApp); } catch (err) { logger.log.error('Failed to start HTTPS server. Reason : [%s]', utils.formatErr(err)); reject(err); return; } const settings = confMgmt.getNexlSettingsCached(); httpsServer.setTimeout(reCalcHttpTimeout(settings[confConsts.SETTINGS.HTTP_TIMEOUT])); // error event handler httpsServer.on('error', (error) => { httpsError(error); }); // listening handler httpsServer.on('listening', () => { const localBindingMsg = settings[confConsts.SETTINGS.HTTPS_BINDING] === 'localhost' ? `. Please pay attention !!! The [localhost] binding is not allowing to access nexl server outside this host. Edit the [${confConsts.CONF_FILES.SETTINGS}] file located in [${confMgmt.getNexlAppDataDir()}] dir to change an HTTPS binding` : ''; logger.log.importantMessage('info', 'nexl HTTPS server is up and listening on [%s:%s]%s', httpServer.address().address, httpServer.address().port, localBindingMsg); resolve(); }); // starting http server httpsServer.listen(settings[confConsts.SETTINGS.HTTPS_PORT], settings[confConsts.SETTINGS.HTTPS_BINDING]); });}function startHTTPSServer() { const settings = confMgmt.getNexlSettingsCached(); if (!schemas.hasHttpsConnector(settings)) { logger.log.debug(`HTTPS binding|port|cert|key is not provided. Not starting HTTPS listener`); return Promise.resolve(); } return assembleSSLCerts().then(startHTTPSServerInner);}function start() { return Promise.resolve() .then(confMgmt.createStorageDirIfNeeded) .then(storageUtils.cacheStorageFiles) .then(startHTTPServer) .then(startHTTPSServer) .then(storageUtils.scheduleAutoamticBackup) .then(_ => { logger.log.info(`nexl home dir is [${confMgmt.getNexlHomeDir()}]`); logger.log.info(`nexl app data dir is [${confMgmt.getNexlAppDataDir()}]`); logger.log.info(`nexl logs dir is [${confMgmt.getNexlSettingsCached()[confConsts.SETTINGS.LOG_FILE_LOCATION]}]`); logger.log.info(`nexl storage dir is [${confMgmt.getNexlStorageDir()}]`); return Promise.resolve(); }) .catch( err => { console.log(err); process.exit(1); });}function stop() { if (httpServer !== undefined) { httpServer.close(); } if (httpsServer !== undefined) { httpsServer.close(); }}function reCalcHttpTimeout(timeout) { return timeout * 1000;}function setHttpTimeout(timeout) { if (httpServer !== undefined) { httpServer.setTimeout(reCalcHttpTimeout(timeout)); } if (httpsServer !== undefined) { httpsServer.setTimeout(reCalcHttpTimeout(timeout)); }}// --------------------------------------------------------------------------------module.exports.create = create;module.exports.start = start;module.exports.stop = stop;module.exports.setHttpTimeout = setHttpTimeout;// -------------------------------------------------------------------------------- |