Custom red.js for Multible httpStatic Folders

my_red.js

#!/usr/bin/env node
/**
 * Copyright JS Foundation and other contributors, http://js.foundation
 *
 * 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.
 **/

/**
 * Customized by Levent Sencer Şahin <@buglss> | 29.03.2022
 * 
 * Added Lines:
 *  1. 50 - require node-red
 *  2. 413..417 - register static paths of server in settings.httpStatics
 *  3. 430 - if condition add settings.httpStatics
 *  4. 437 - if condition add settings.httpStatics
 *  5. 545..458 - log of http static paths in settings.httpStatics property
 */

 if (process.argv[2] === 'admin') {
    try {
        require("node-red-admin")(process.argv.slice(3)).catch(err => {
            process.exit(1);
        })
    } catch(err) {
        console.log(err)
    }
    return;
}

var http = require('http');
var https = require('https');
var util = require("util");
var express = require("express");
var crypto = require("crypto");
try { bcrypt = require('bcrypt'); }
catch(e) { bcrypt = require('bcryptjs'); }
var nopt = require("nopt");
var path = require("path");
var fs = require("fs-extra");
var RED = require("node-red");

var server;
var app = express();

var settingsFile;
var flowFile;

var knownOpts = {
    "help": Boolean,
    "port": Number,
    "settings": [path],
    "title": String,
    "userDir": [path],
    "verbose": Boolean,
    "safe": Boolean,
    "define": [String, Array]
};
var shortHands = {
    "?":["--help"],
    "p":["--port"],
    "s":["--settings"],
    // As we want to reserve -t for now, adding a shorthand to help so it
    // doesn't get treated as --title
    "t":["--help"],
    "u":["--userDir"],
    "v":["--verbose"],
    "D":["--define"]
};
nopt.invalidHandler = function(k,v,t) {
    // TODO: console.log(k,v,t);
}

var parsedArgs = nopt(knownOpts,shortHands,process.argv,2)

if (parsedArgs.help) {
    console.log("Node-RED v"+RED.version());
    console.log("Usage: node-red [-v] [-?] [--settings settings.js] [--userDir DIR]");
    console.log("                [--port PORT] [--title TITLE] [--safe] [flows.json]");
    console.log("       node-red admin <command> [args] [-?] [--userDir DIR] [--json]");
    console.log("");
    console.log("Options:");
    console.log("  -p, --port     PORT  port to listen on");
    console.log("  -s, --settings FILE  use specified settings file");
    console.log("      --title    TITLE process window title");
    console.log("  -u, --userDir  DIR   use specified user directory");
    console.log("  -v, --verbose        enable verbose output");
    console.log("      --safe           enable safe mode");
    console.log("  -D, --define   X=Y   overwrite value in settings file");
    console.log("  -?, --help           show this help");
    console.log("  admin <command>      run an admin command");
    console.log("");
    console.log("Documentation can be found at http://nodered.org");
    process.exit();
}

if (parsedArgs.argv.remain.length > 0) {
    flowFile = parsedArgs.argv.remain[0];
}

process.env.NODE_RED_HOME = process.env.NODE_RED_HOME || __dirname;

if (parsedArgs.settings) {
    // User-specified settings file
    settingsFile = parsedArgs.settings;
} else if (parsedArgs.userDir && fs.existsSync(path.join(parsedArgs.userDir,"settings.js"))) {
    // User-specified userDir that contains a settings.js
    settingsFile = path.join(parsedArgs.userDir,"settings.js");
} else {
    if (fs.existsSync(path.join(process.env.NODE_RED_HOME,".config.json"))) {
        // NODE_RED_HOME contains user data - use its settings.js
        settingsFile = path.join(process.env.NODE_RED_HOME,"settings.js");
    } else if (process.env.HOMEPATH && fs.existsSync(path.join(process.env.HOMEPATH,".node-red",".config.json"))) {
        // Consider compatibility for older versions
        settingsFile = path.join(process.env.HOMEPATH,".node-red","settings.js");
    } else {
        var userDir = parsedArgs.userDir || path.join(process.env.HOME || process.env.USERPROFILE || process.env.HOMEPATH,".node-red");
        var userSettingsFile = path.join(userDir,"settings.js");
        if (fs.existsSync(userSettingsFile)) {
            // $HOME/.node-red/settings.js exists
            settingsFile = userSettingsFile;
        } else {
            var defaultSettings = path.join(__dirname,"settings.js");
            var settingsStat = fs.statSync(defaultSettings);
            if (settingsStat.mtime.getTime() <= settingsStat.ctime.getTime()) {
                // Default settings file has not been modified - safe to copy
                fs.copySync(defaultSettings,userSettingsFile);
                settingsFile = userSettingsFile;
            } else {
                // Use default settings.js as it has been modified
                settingsFile = defaultSettings;
            }
        }
    }
}

try {
    var settings = require(settingsFile);
    settings.settingsFile = settingsFile;
} catch(err) {
    console.log("Error loading settings file: "+settingsFile)
    if (err.code == 'MODULE_NOT_FOUND') {
        if (err.toString().indexOf(settingsFile) === -1) {
            console.log(err.toString());
        }
    } else {
        console.log(err);
    }
    process.exit();
}

if (parsedArgs.define) {
    var defs = parsedArgs.define;
    try {
        while (defs.length > 0) {
            var def = defs.shift();
            var match = /^(([^=]+)=(.+)|@(.*))$/.exec(def);
            if (match) {
                if (!match[4]) {
                    var val = match[3];
                    try {
                        val = JSON.parse(match[3]);
                    } catch(err) {
                        // Leave it as a string
                    }
                    RED.util.setObjectProperty(settings, match[2], val, true);
                } else {
                    var obj = fs.readJsonSync(match[4]);
                    for (var k in obj) {
                        if (obj.hasOwnProperty(k)) {
                            RED.util.setObjectProperty(settings, k, obj[k], true)
                        }
                    }
                }
            }
            else {
                throw new Error("Invalid syntax: '"+def+"'");
            }

        }
    } catch (e) {
        console.log("Error processing -D option: "+e.message);
        process.exit();
    }
}

if (parsedArgs.verbose) {
    settings.verbose = true;
}
if (parsedArgs.safe || (process.env.NODE_RED_ENABLE_SAFE_MODE && !/^false$/i.test(process.env.NODE_RED_ENABLE_SAFE_MODE) )) {
    settings.safeMode = true;
}
if (process.env.NODE_RED_ENABLE_PROJECTS) {
    settings.editorTheme = settings.editorTheme || {};
    settings.editorTheme.projects = settings.editorTheme.projects || {};
    settings.editorTheme.projects.enabled = !/^false$/i.test(process.env.NODE_RED_ENABLE_PROJECTS);
}

if (process.env.NODE_RED_ENABLE_TOURS) {
    settings.editorTheme = settings.editorTheme || {};
    settings.editorTheme.tours = !/^false$/i.test(process.env.NODE_RED_ENABLE_TOURS);
}


var defaultServerSettings = {
    "x-powered-by": false
}
var serverSettings = Object.assign({},defaultServerSettings,settings.httpServerOptions||{});
for (var eOption in serverSettings) {
    app.set(eOption, serverSettings[eOption]);
}


// Delay logging of (translated) messages until the RED object has been initialized
var delayedLogItems = [];

var startupHttps = settings.https;
if (typeof startupHttps === "function") {
    // Get the result of the function, because createServer doesn't accept functions as input
    startupHttps = startupHttps();
}
var httpsPromise = Promise.resolve(startupHttps);

httpsPromise.then(function(startupHttps) {
    if (startupHttps) {
        server = https.createServer(startupHttps,function(req,res) {app(req,res);});

        if (settings.httpsRefreshInterval) {
            var httpsRefreshInterval = parseFloat(settings.httpsRefreshInterval)||12;
            if (httpsRefreshInterval > 596) {
                // Max value based on (2^31-1)ms - the max that setInterval can accept
                httpsRefreshInterval = 596;
            }
            // Check whether setSecureContext is available (Node.js 11+)
            if (server.setSecureContext) {
                // Check whether `http` is a callable function
                if (typeof settings.https === "function") {
                    delayedLogItems.push({type:"info", id:"server.https.refresh-interval", params:{interval:httpsRefreshInterval}});
                    setInterval(function () {
                        try {
                            // Get the result of the function, because createServer doesn't accept functions as input
                            Promise.resolve(settings.https()).then(function(refreshedHttps) {
                                if (refreshedHttps) {
                                    // The key/cert needs to be updated in the NodeJs http(s) server, when no key/cert is yet available or when the key/cert has changed.
                                    // Note that the refreshed key/cert can be supplied as a string or a buffer.
                                    var updateKey = (server.key == undefined || (Buffer.isBuffer(server.key) && !server.key.equals(refreshedHttps.key)) || (typeof server.key == "string" && server.key != refreshedHttps.key));
                                    var updateCert = (server.cert == undefined || (Buffer.isBuffer(server.cert) && !server.cert.equals(refreshedHttps.cert)) || (typeof server.cert == "string" && server.cert != refreshedHttps.cert));

                                    // Only update the credentials in the server when key or cert has changed
                                    if(updateKey || updateCert) {
                                        server.setSecureContext(refreshedHttps);
                                        RED.log.info(RED.log._("server.https.settings-refreshed"));
                                    }
                                }
                            }).catch(function(err) {
                                RED.log.error(RED.log._("server.https.refresh-failed",{message:err}));
                            });
                        } catch(err) {
                            RED.log.error(RED.log._("server.https.refresh-failed",{message:err}));
                        }
                    }, httpsRefreshInterval*60*60*1000);
                } else {
                    delayedLogItems.push({type:"warn", id:"server.https.function-required"});
                }
            } else {
                delayedLogItems.push({type:"warn", id:"server.https.nodejs-version"});
            }
        }
    } else {
        server = http.createServer(function(req,res) {app(req,res);});
    }
    server.setMaxListeners(0);

    function formatRoot(root) {
        if (root[0] != "/") {
            root = "/" + root;
        }
        if (root.slice(-1) != "/") {
            root = root + "/";
        }
        return root;
    }

    if (settings.httpRoot === false) {
        settings.httpAdminRoot = false;
        settings.httpNodeRoot = false;
    } else {
        settings.disableEditor = settings.disableEditor||false;
    }

    if (settings.httpAdminRoot !== false) {
        settings.httpAdminRoot = formatRoot(settings.httpAdminRoot || settings.httpRoot || "/");
        settings.httpAdminAuth = settings.httpAdminAuth || settings.httpAuth;
    } else {
        settings.disableEditor = true;
    }

    if (settings.httpNodeRoot !== false) {
        settings.httpNodeRoot = formatRoot(settings.httpNodeRoot || settings.httpRoot || "/");
        settings.httpNodeAuth = settings.httpNodeAuth || settings.httpAuth;
    }

    // if we got a port from command line, use it (even if 0)
    // replicate (settings.uiPort = parsedArgs.port||settings.uiPort||1880;) but allow zero
    if (parsedArgs.port !== undefined){
        settings.uiPort = parsedArgs.port;
    } else {
        if (settings.uiPort === undefined){
            settings.uiPort = 1880;
        }
    }

    settings.uiHost = settings.uiHost||"0.0.0.0";

    if (flowFile) {
        settings.flowFile = flowFile;
    }
    if (parsedArgs.userDir) {
        settings.userDir = parsedArgs.userDir;
    }

    try {
        RED.init(server,settings);
    } catch(err) {
        if (err.code == "unsupported_version") {
            console.log("Unsupported version of Node.js:",process.version);
            console.log("Node-RED requires Node.js v8.9.0 or later");
        } else {
            console.log("Failed to start server:");
            if (err.stack) {
                console.log(err.stack);
            } else {
                console.log(err);
            }
        }
        process.exit(1);
    }

    function basicAuthMiddleware(user,pass) {
        var basicAuth = require('basic-auth');
        var checkPassword;
        var localCachedPassword;
        if (pass.length == "32") {
            // Assume its a legacy md5 password
            checkPassword = function(p) {
                return crypto.createHash('md5').update(p,'utf8').digest('hex') === pass;
            }
        } else {
            checkPassword = function(p) {
                return bcrypt.compareSync(p,pass);
            }
        }

        var checkPasswordAndCache = function(p) {
            // For BasicAuth routes we know the password cannot change without
            // a restart of Node-RED. This means we can cache the provided crypted
            // version to save recalculating each time.
            if (localCachedPassword === p) {
                return true;
            }
            var result = checkPassword(p);
            if (result) {
                localCachedPassword = p;
            }
            return result;
        }

        return function(req,res,next) {
            if (req.method === 'OPTIONS') {
                return next();
            }
            var requestUser = basicAuth(req);
            if (!requestUser || requestUser.name !== user || !checkPasswordAndCache(requestUser.pass)) {
                res.set('WWW-Authenticate', 'Basic realm="Authorization Required"');
                return res.sendStatus(401);
            }
            next();
        }
    }

    if (settings.httpAdminRoot !== false && settings.httpAdminAuth) {
        RED.log.warn(RED.log._("server.httpadminauth-deprecated"));
        app.use(settings.httpAdminRoot, basicAuthMiddleware(settings.httpAdminAuth.user,settings.httpAdminAuth.pass));
    }

    if (settings.httpAdminRoot !== false) {
        app.use(settings.httpAdminRoot,RED.httpAdmin);
    }
    if (settings.httpNodeRoot !== false && settings.httpNodeAuth) {
        app.use(settings.httpNodeRoot,basicAuthMiddleware(settings.httpNodeAuth.user,settings.httpNodeAuth.pass));
    }
    if (settings.httpNodeRoot !== false) {
        app.use(settings.httpNodeRoot,RED.httpNode);
    }
    if (settings.httpStatic) {
        settings.httpStaticAuth = settings.httpStaticAuth || settings.httpAuth;
        if (settings.httpStaticAuth) {
            app.use("/",basicAuthMiddleware(settings.httpStaticAuth.user,settings.httpStaticAuth.pass));
        }
        app.use("/",express.static(settings.httpStatic));
    }

    // Register static paths of server in settings.httpStatics
    if (settings.httpStatics && Array.isArray(settings.httpStatics)) {
        settings.httpStatics.forEach(s => {
            app.use("/",express.static(s));
        })
    }

    function getListenPath() {
        var port = settings.serverPort;
        if (port === undefined){
            port = settings.uiPort;
        }

        var listenPath = 'http'+(settings.https?'s':'')+'://'+
                        (settings.uiHost == '::'?'localhost':(settings.uiHost == '0.0.0.0'?'127.0.0.1':settings.uiHost))+
                        ':'+port;
        if (settings.httpAdminRoot !== false) {
            listenPath += settings.httpAdminRoot;
        } else if (settings.httpStatic || settings.httpStatics) { // add settings.httpStatics
            listenPath += "/";
        }
        return listenPath;
    }

    RED.start().then(function() {
        if (settings.httpAdminRoot !== false || settings.httpNodeRoot !== false || settings.httpStatic || settings.httpStatics) { // add settings.httpStatics
            server.on('error', function(err) {
                if (err.errno === "EADDRINUSE") {
                    RED.log.error(RED.log._("server.unable-to-listen", {listenpath:getListenPath()}));
                    RED.log.error(RED.log._("server.port-in-use"));
                } else {
                    RED.log.error(RED.log._("server.uncaught-exception"));
                    if (err.stack) {
                        RED.log.error(err.stack);
                    } else {
                        RED.log.error(err);
                    }
                }
                process.exit(1);
            });

            // Log of http static paths in settings.httpStatics property
            if (settings.httpStatics && Array.isArray(settings.httpStatics)) {
                settings.httpStatics.forEach(function (s) {
                    RED.log.info(log._("runtime.paths.httpStatic",{path:path.resolve(s)}));
                });
            }

            // Log all the delayed messages, since they can be translated at this point
            delayedLogItems.forEach(function (delayedLogItem, index) {
                RED.log[delayedLogItem.type](RED.log._(delayedLogItem.id, delayedLogItem.params||{}));
            });

            server.listen(settings.uiPort,settings.uiHost,function() {
                if (settings.httpAdminRoot === false) {
                    RED.log.info(RED.log._("server.admin-ui-disabled"));
                }
                settings.serverPort = server.address().port;
                process.title = parsedArgs.title || 'node-red';
                RED.log.info(RED.log._("server.now-running", {listenpath:getListenPath()}));
            });
        } else {
            RED.log.info(RED.log._("server.headless-mode"));
        }
    }).catch(function(err) {
        RED.log.error(RED.log._("server.failed-to-start"));
        if (err.stack) {
            RED.log.error(err.stack);
        } else {
            RED.log.error(err);
        }
    });

    process.on('uncaughtException',function(err) {
        util.log('[red] Uncaught Exception:');
        if (err.stack) {
            try {
                RED.log.error(err.stack);
            } catch(err2) {
                util.log(err.stack);
            }
        } else {
            try {
                RED.log.error(err);
            } catch(err2) {
                util.log(err);
            }
        }
        process.exit(1);
    });

    var stopping = false;
    function exitWhenStopped() {
        if (!stopping) {
            stopping = true;
            RED.stop().then(function() {
                process.exit();
            });
        }
    }
    process.on('SIGINT', exitWhenStopped);
    process.on('SIGTERM', exitWhenStopped);
    process.on('SIGHUP', exitWhenStopped);
    process.on('SIGUSR2', exitWhenStopped);  // for nodemon restart
    process.on('SIGBREAK', exitWhenStopped); // for windows ctrl-break
    process.on('message', function(m) {      // for PM2 under window with --shutdown-with-message
        if (m === 'shutdown') { exitWhenStopped() }
    });

}).catch(function(err) {
    console.log("Failed to get https settings: " + err);
    console.log(err.stack)
});

settings.js

/**
 * This is the default settings file provided by Node-RED.
 *
 * It can contain any valid JavaScript code that will get run when Node-RED
 * is started.
 *
 * Lines that start with // are commented out.
 * Each entry should be separated from the entries above and below by a comma ','
 *
 * For more information about individual settings, refer to the documentation:
 *    https://nodered.org/docs/user-guide/runtime/configuration
 *
 * The settings are split into the following sections:
 *  - Flow File and User Directory Settings
 *  - Security
 *  - Server Settings
 *  - Runtime Settings
 *  - Editor Settings
 *  - Node Settings
 *
 **/

/**
 * Customized by Levent Sencer Şahin <@buglss> | 29.03.2022
 * 
 * Added Lines:
 *  1. 234 - httpStatics: like httpStatic but supports multi paths
 */

 module.exports = {

    /*******************************************************************************
     * Flow File and User Directory Settings
     *  - flowFile
     *  - credentialSecret
     *  - flowFilePretty
     *  - userDir
     *  - nodesDir
     ******************************************************************************/
    
        /** The file containing the flows. If not set, defaults to flows_<hostname>.json **/
        flowFile: 'flows.json',
    
        /** By default, credentials are encrypted in storage using a generated key. To
         * specify your own secret, set the following property.
         * If you want to disable encryption of credentials, set this property to false.
         * Note: once you set this property, do not change it - doing so will prevent
         * node-red from being able to decrypt your existing credentials and they will be
         * lost.
         */
        //credentialSecret: "a-secret-key",
    
        /** By default, the flow JSON will be formatted over multiple lines making
         * it easier to compare changes when using version control.
         * To disable pretty-printing of the JSON set the following property to false.
         */
        flowFilePretty: true,
    
        /** By default, all user data is stored in a directory called `.node-red` under
         * the user's home directory. To use a different location, the following
         * property can be used
         */
        //userDir: '/home/nol/.node-red/',
    
        /** Node-RED scans the `nodes` directory in the userDir to find local node files.
         * The following property can be used to specify an additional directory to scan.
         */
        //nodesDir: '/home/nol/.node-red/nodes',
    
    /*******************************************************************************
     * Security
     *  - adminAuth
     *  - https
     *  - httpsRefreshInterval
     *  - requireHttps
     *  - httpNodeAuth
     *  - httpStaticAuth
     ******************************************************************************/
    
        /** To password protect the Node-RED editor and admin API, the following
         * property can be used. See http://nodered.org/docs/security.html for details.
         */
        //adminAuth: {
        //    type: "credentials",
        //    users: [{
        //        username: "admin",
        //        password: "$2a$08$zZWtXTja0fB1pzD4sHCMyOCMYz2Z6dNbM6tl8sJogENOMcxWV9DN.",
        //        permissions: "*"
        //    }]
        //},
    
        /** The following property can be used to enable HTTPS
         * This property can be either an object, containing both a (private) key
         * and a (public) certificate, or a function that returns such an object.
         * See http://nodejs.org/api/https.html#https_https_createserver_options_requestlistener
         * for details of its contents.
         */
    
        /** Option 1: static object */
        //https: {
        //  key: require("fs").readFileSync('privkey.pem'),
        //  cert: require("fs").readFileSync('cert.pem')
        //},
    
        /** Option 2: function that returns the HTTP configuration object */
        // https: function() {
        //     // This function should return the options object, or a Promise
        //     // that resolves to the options object
        //     return {
        //         key: require("fs").readFileSync('privkey.pem'),
        //         cert: require("fs").readFileSync('cert.pem')
        //     }
        // },
    
        /** If the `https` setting is a function, the following setting can be used
         * to set how often, in hours, the function will be called. That can be used
         * to refresh any certificates.
         */
        //httpsRefreshInterval : 12,
    
        /** The following property can be used to cause insecure HTTP connections to
         * be redirected to HTTPS.
         */
        //requireHttps: true,
    
        /** To password protect the node-defined HTTP endpoints (httpNodeRoot),
         * including node-red-dashboard, or the static content (httpStatic), the
         * following properties can be used.
         * The `pass` field is a bcrypt hash of the password.
         * See http://nodered.org/docs/security.html#generating-the-password-hash
         */
        //httpNodeAuth: {user:"user",pass:"$2a$08$zZWtXTja0fB1pzD4sHCMyOCMYz2Z6dNbM6tl8sJogENOMcxWV9DN."},
        //httpStaticAuth: {user:"user",pass:"$2a$08$zZWtXTja0fB1pzD4sHCMyOCMYz2Z6dNbM6tl8sJogENOMcxWV9DN."},
    
    /*******************************************************************************
     * Server Settings
     *  - uiPort
     *  - uiHost
     *  - apiMaxLength
     *  - httpServerOptions
     *  - httpAdminRoot
     *  - httpAdminMiddleware
     *  - httpNodeRoot
     *  - httpNodeCors
     *  - httpNodeMiddleware
     *  - httpStatic
     ******************************************************************************/
    
        /** the tcp port that the Node-RED web server is listening on */
        uiPort: process.env.PORT || 1880,
    
        /** By default, the Node-RED UI accepts connections on all IPv4 interfaces.
         * To listen on all IPv6 addresses, set uiHost to "::",
         * The following property can be used to listen on a specific interface. For
         * example, the following would only allow connections from the local machine.
         */
        //uiHost: "127.0.0.1",
    
        /** The maximum size of HTTP request that will be accepted by the runtime api.
         * Default: 5mb
         */
        //apiMaxLength: '5mb',
    
        /** The following property can be used to pass custom options to the Express.js
         * server used by Node-RED. For a full list of available options, refer
         * to http://expressjs.com/en/api.html#app.settings.table
         */
        //httpServerOptions: { },
    
        /** By default, the Node-RED UI is available at http://localhost:1880/
         * The following property can be used to specify a different root path.
         * If set to false, this is disabled.
         */
        //httpAdminRoot: '/admin',
    
        /** The following property can be used to add a custom middleware function
         * in front of all admin http routes. For example, to set custom http
         * headers. It can be a single function or an array of middleware functions.
         */
        // httpAdminMiddleware: function(req,res,next) {
        //    // Set the X-Frame-Options header to limit where the editor
        //    // can be embedded
        //    //res.set('X-Frame-Options', 'sameorigin');
        //    next();
        // },
    
    
        /** Some nodes, such as HTTP In, can be used to listen for incoming http requests.
         * By default, these are served relative to '/'. The following property
         * can be used to specifiy a different root path. If set to false, this is
         * disabled.
         */
        //httpNodeRoot: '/red-nodes',
    
        /** The following property can be used to configure cross-origin resource sharing
         * in the HTTP nodes.
         * See https://github.com/troygoode/node-cors#configuration-options for
         * details on its contents. The following is a basic permissive set of options:
         */
        //httpNodeCors: {
        //    origin: "*",
        //    methods: "GET,PUT,POST,DELETE"
        //},
    
        /** If you need to set an http proxy please set an environment variable
         * called http_proxy (or HTTP_PROXY) outside of Node-RED in the operating system.
         * For example - http_proxy=http://myproxy.com:8080
         * (Setting it here will have no effect)
         * You may also specify no_proxy (or NO_PROXY) to supply a comma separated
         * list of domains to not proxy, eg - no_proxy=.acme.co,.acme.co.uk
         */
    
        /** The following property can be used to add a custom middleware function
         * in front of all http in nodes. This allows custom authentication to be
         * applied to all http in nodes, or any other sort of common request processing.
         * It can be a single function or an array of middleware functions.
         */
        //httpNodeMiddleware: function(req,res,next) {
        //    // Handle/reject the request, or pass it on to the http in node by calling next();
        //    // Optionally skip our rawBodyParser by setting this to true;
        //    //req.skipRawBodyParser = true;
        //    next();
        //},
    
        /** When httpAdminRoot is used to move the UI to a different root path, the
         * following property can be used to identify a directory of static content
         * that should be served at http://localhost:1880/.
         */
        //httpStatic: '/home/nol/node-red-static/',

        /**
         * Like httpStatic but supports multi paths
         */
        //httpStatics: ['./projects/foo/assets/','./projects/bar/assets/'],
    
    /*******************************************************************************
     * Runtime Settings
     *  - lang
     *  - logging
     *  - contextStorage
     *  - exportGlobalContextKeys
     *  - externalModules
     ******************************************************************************/
    
         /** Uncomment the following to run node-red in your preferred language.
          * Available languages include: en-US (default), ja, de, zh-CN, zh-TW, ru, ko
          * Some languages are more complete than others.
          */
         // lang: "de",
    
         /** Configure the logging output */
         logging: {
             /** Only console logging is currently supported */
             console: {
                 /** Level of logging to be recorded. Options are:
                  * fatal - only those errors which make the application unusable should be recorded
                  * error - record errors which are deemed fatal for a particular request + fatal errors
                  * warn - record problems which are non fatal + errors + fatal errors
                  * info - record information about the general running of the application + warn + error + fatal errors
                  * debug - record information which is more verbose than info + info + warn + error + fatal errors
                  * trace - record very detailed logging + debug + info + warn + error + fatal errors
                  * off - turn off all logging (doesn't affect metrics or audit)
                  */
                 level: "info",
                 /** Whether or not to include metric events in the log output */
                 metrics: false,
                 /** Whether or not to include audit events in the log output */
                 audit: false
             }
         },
    
         /** Context Storage
          * The following property can be used to enable context storage. The configuration
          * provided here will enable file-based context that flushes to disk every 30 seconds.
          * Refer to the documentation for further options: https://nodered.org/docs/api/context/
          */
         //contextStorage: {
         //    default: {
         //        module:"localfilesystem"
         //    },
         //},
    
         /** `global.keys()` returns a list of all properties set in global context.
          * This allows them to be displayed in the Context Sidebar within the editor.
          * In some circumstances it is not desirable to expose them to the editor. The
          * following property can be used to hide any property set in `functionGlobalContext`
          * from being list by `global.keys()`.
          * By default, the property is set to false to avoid accidental exposure of
          * their values. Setting this to true will cause the keys to be listed.
          */
         exportGlobalContextKeys: false,
    
         /** Configure how the runtime will handle external npm modules.
          * This covers:
          *  - whether the editor will allow new node modules to be installed
          *  - whether nodes, such as the Function node are allowed to have their
          * own dynamically configured dependencies.
          * The allow/denyList options can be used to limit what modules the runtime
          * will install/load. It can use '*' as a wildcard that matches anything.
          */
         externalModules: {
             // autoInstall: false,   /** Whether the runtime will attempt to automatically install missing modules */
             // autoInstallRetry: 30, /** Interval, in seconds, between reinstall attempts */
             // palette: {              /** Configuration for the Palette Manager */
             //     allowInstall: true, /** Enable the Palette Manager in the editor */
             //     allowUpdate: true,  /** Allow modules to be updated in the Palette Manager */
             //     allowUpload: true,  /** Allow module tgz files to be uploaded and installed */
             //     allowList: ['*'],
             //     denyList: [],
             //     allowUpdateList: ['*'],
             //     denyUpdateList: []
             // },
             // modules: {              /** Configuration for node-specified modules */
             //     allowInstall: true,
             //     allowList: [],
             //     denyList: []
             // }
         },
    
    
    /*******************************************************************************
     * Editor Settings
     *  - disableEditor
     *  - editorTheme
     ******************************************************************************/
    
        /** The following property can be used to disable the editor. The admin API
         * is not affected by this option. To disable both the editor and the admin
         * API, use either the httpRoot or httpAdminRoot properties
         */
        //disableEditor: false,
    
        /** Customising the editor
         * See https://nodered.org/docs/user-guide/runtime/configuration#editor-themes
         * for all available options.
         */
        editorTheme: {
            /** The following property can be used to set a custom theme for the editor.
             * See https://github.com/node-red-contrib-themes/theme-collection for
             * a collection of themes to chose from.
             */
            //theme: "",
    
            /** To disable the 'Welcome to Node-RED' tour that is displayed the first
             * time you access the editor for each release of Node-RED, set this to false
             */
            //tours: false,
    
            palette: {
                /** The following property can be used to order the categories in the editor
                 * palette. If a node's category is not in the list, the category will get
                 * added to the end of the palette.
                 * If not set, the following default order is used:
                 */
                //categories: ['subflows', 'common', 'function', 'network', 'sequence', 'parser', 'storage'],
            },
    
            projects: {
                /** To enable the Projects feature, set this value to true */
                enabled: false,
                workflow: {
                    /** Set the default projects workflow mode.
                     *  - manual - you must manually commit changes
                     *  - auto - changes are automatically committed
                     * This can be overridden per-user from the 'Git config'
                     * section of 'User Settings' within the editor
                     */
                    mode: "manual"
                }
            },
    
            codeEditor: {
                /** Select the text editor component used by the editor.
                 * Defaults to "ace", but can be set to "ace" or "monaco"
                 */
                lib: "ace",
                options: {
                    /** The follow options only apply if the editor is set to "monaco"
                     *
                     * theme - must match the file name of a theme in
                     * packages/node_modules/@node-red/editor-client/src/vendor/monaco/dist/theme
                     * e.g. "tomorrow-night", "upstream-sunburst", "github", "my-theme"
                     */
                    theme: "vs",
                    /** other overrides can be set e.g. fontSize, fontFamily, fontLigatures etc.
                     * for the full list, see https://microsoft.github.io/monaco-editor/api/interfaces/monaco.editor.istandaloneeditorconstructionoptions.html
                     */
                    //fontSize: 14,
                    //fontFamily: "Cascadia Code, Fira Code, Consolas, 'Courier New', monospace",
                    //fontLigatures: true,
                }
            }
        },
    
    /*******************************************************************************
     * Node Settings
     *  - fileWorkingDirectory
     *  - functionGlobalContext
     *  - functionExternalModules
     *  - nodeMessageBufferMaxLength
     *  - ui (for use with Node-RED Dashboard)
     *  - debugUseColors
     *  - debugMaxLength
     *  - execMaxBufferSize
     *  - httpRequestTimeout
     *  - mqttReconnectTime
     *  - serialReconnectTime
     *  - socketReconnectTime
     *  - socketTimeout
     *  - tcpMsgQueueSize
     *  - inboundWebSocketTimeout
     *  - tlsConfigDisableLocalFiles
     *  - webSocketNodeVerifyClient
     ******************************************************************************/
    
        /** The working directory to handle relative file paths from within the File nodes
         * defaults to the working directory of the Node-RED process.
         */
        //fileWorkingDirectory: "",
    
        /** Allow the Function node to load additional npm modules directly */
        functionExternalModules: true,
    
        /** The following property can be used to set predefined values in Global Context.
         * This allows extra node modules to be made available with in Function node.
         * For example, the following:
         *    functionGlobalContext: { os:require('os') }
         * will allow the `os` module to be accessed in a Function node using:
         *    global.get("os")
         */
        functionGlobalContext: {
            // os:require('os'),
        },
    
        /** The maximum number of messages nodes will buffer internally as part of their
         * operation. This applies across a range of nodes that operate on message sequences.
         * defaults to no limit. A value of 0 also means no limit is applied.
         */
        //nodeMessageBufferMaxLength: 0,
    
        /** If you installed the optional node-red-dashboard you can set it's path
         * relative to httpNodeRoot
         * Other optional properties include
         *  readOnly:{boolean},
         *  middleware:{function or array}, (req,res,next) - http middleware
         *  ioMiddleware:{function or array}, (socket,next) - socket.io middleware
         */
        //ui: { path: "ui" },
    
        /** Colourise the console output of the debug node */
        //debugUseColors: true,
    
        /** The maximum length, in characters, of any message sent to the debug sidebar tab */
        debugMaxLength: 1000,
    
        /** Maximum buffer size for the exec node. Defaults to 10Mb */
        //execMaxBufferSize: 10000000,
    
        /** Timeout in milliseconds for HTTP request connections. Defaults to 120s */
        //httpRequestTimeout: 120000,
    
        /** Retry time in milliseconds for MQTT connections */
        mqttReconnectTime: 15000,
    
        /** Retry time in milliseconds for Serial port connections */
        serialReconnectTime: 15000,
    
        /** Retry time in milliseconds for TCP socket connections */
        //socketReconnectTime: 10000,
    
        /** Timeout in milliseconds for TCP server socket connections. Defaults to no timeout */
        //socketTimeout: 120000,
    
        /** Maximum number of messages to wait in queue while attempting to connect to TCP socket
         * defaults to 1000
         */
        //tcpMsgQueueSize: 2000,
    
        /** Timeout in milliseconds for inbound WebSocket connections that do not
         * match any configured node. Defaults to 5000
         */
        //inboundWebSocketTimeout: 5000,
    
        /** To disable the option for using local files for storing keys and
         * certificates in the TLS configuration node, set this to true.
         */
        //tlsConfigDisableLocalFiles: true,
    
        /** The following property can be used to verify websocket connection attempts.
         * This allows, for example, the HTTP request headers to be checked to ensure
         * they include valid authentication information.
         */
        //webSocketNodeVerifyClient: function(info) {
        //    /** 'info' has three properties:
        //    *   - origin : the value in the Origin header
        //    *   - req : the HTTP request
        //    *   - secure : true if req.connection.authorized or req.connection.encrypted is set
        //    *
        //    * The function should return true if the connection should be accepted, false otherwise.
        //    *
        //    * Alternatively, if this function is defined to accept a second argument, callback,
        //    * it can be used to verify the client asynchronously.
        //    * The callback takes three arguments:
        //    *   - result : boolean, whether to accept the connection or not
        //    *   - code : if result is false, the HTTP error status to return
        //    *   - reason: if result is false, the HTTP reason string to return
        //    */
        //},
    }