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node-red/red.js

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#!/usr/bin/env node
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/**
* Copyright 2013, 2015 IBM Corp.
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*
* 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.
**/
var http = require('http');
var https = require('https');
var util = require("util");
var express = require("express");
var crypto = require("crypto");
var nopt = require("nopt");
var path = require("path");
var fs = require("fs-extra");
var RED = require("./red/red.js");
var log = require("./red/log");
var server;
var app = express();
var settingsFile;
var flowFile;
var knownOpts = {
"settings":[path],
"userDir":[path],
"v": Boolean,
"help": Boolean
};
var shortHands = {
"s":["--settings"],
"u":["--userDir"],
"?":["--help"]
};
nopt.invalidHandler = function(k,v,t) {
// TODO: console.log(k,v,t);
}
var parsedArgs = nopt(knownOpts,shortHands,process.argv,2)
if (parsedArgs.help) {
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console.log("Node-RED v"+RED.version());
console.log("Usage: node-red [-v] [-?] [--settings settings.js] [--userDir DIR] [flows.json]");
console.log("");
console.log("Options:");
console.log(" -s, --settings FILE use specified settings file");
console.log(" -u, --userDir DIR use specified user directory");
console.log(" -v enable verbose output");
console.log(" -?, --help show usage");
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];
}
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 {
var userDir = path.join(process.env.HOME || process.env.HOMEPATH || process.env.USERPROFILE,".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.v) {
settings.verbose = true;
}
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if (settings.https) {
server = https.createServer(settings.https,function(req,res){app(req,res);});
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} else {
server = http.createServer(function(req,res){app(req,res);});
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}
server.setMaxListeners(0);
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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.httpRoot = settings.httpRoot||"/";
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settings.disableEditor = settings.disableEditor||false;
}
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if (settings.httpAdminRoot !== false) {
settings.httpAdminRoot = formatRoot(settings.httpAdminRoot || settings.httpRoot || "/");
settings.httpAdminAuth = settings.httpAdminAuth || settings.httpAuth;
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} else {
settings.disableEditor = true;
}
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if (settings.httpNodeRoot !== false) {
settings.httpNodeRoot = formatRoot(settings.httpNodeRoot || settings.httpRoot || "/");
settings.httpNodeAuth = settings.httpNodeAuth || settings.httpAuth;
}
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settings.uiPort = settings.uiPort||1880;
settings.uiHost = settings.uiHost||"0.0.0.0";
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if (flowFile) {
settings.flowFile = flowFile;
}
if (parsedArgs.userDir) {
settings.userDir = parsedArgs.userDir;
}
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try {
RED.init(server,settings);
} catch(err) {
if (err.code == "not_built") {
console.log("Node-RED has not been built. See README.md for details");
} else {
console.log("Failed to start server:");
if (err.stack) {
console.log(err.stack);
} else {
console.log(err);
}
}
process.exit(1);
}
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function basicAuthMiddleware(user,pass) {
var basicAuth = require('basic-auth');
return function(req,res,next) {
var requestUser = basicAuth(req);
if (!requestUser || requestUser.name !== user || crypto.createHash('md5').update(requestUser.pass,'utf8').digest('hex') !== pass) {
res.set('WWW-Authenticate', 'Basic realm=Authorization Required');
return res.sendStatus(401);
}
next();
}
}
if (settings.httpAdminRoot !== false && settings.httpAdminAuth) {
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RED.log.warn(log._("server.httpadminauth-deprecated"));
app.use(settings.httpAdminRoot, basicAuthMiddleware(settings.httpAdminAuth.user,settings.httpAdminAuth.pass));
}
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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);
}
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if (settings.httpStatic) {
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settings.httpStaticAuth = settings.httpStaticAuth || settings.httpAuth;
if (settings.httpStaticAuth) {
app.use("/",basicAuthMiddleware(settings.httpStaticAuth.user,settings.httpStaticAuth.pass));
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}
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app.use("/",express.static(settings.httpStatic));
}
function getListenPath() {
var listenPath = 'http'+(settings.https?'s':'')+'://'+
(settings.uiHost == '0.0.0.0'?'127.0.0.1':settings.uiHost)+
':'+settings.uiPort;
if (settings.httpAdminRoot !== false) {
listenPath += settings.httpAdminRoot;
} else if (settings.httpStatic) {
listenPath += "/";
}
return listenPath;
}
RED.start().then(function() {
if (settings.httpAdminRoot !== false || settings.httpNodeRoot !== false || settings.httpStatic) {
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server.on('error', function(err) {
if (err.errno === "EADDRINUSE") {
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RED.log.error(log._("server.unable-to-listen", {listenpath:getListenPath()}));
RED.log.error(log._("server.port-in-use"));
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} else {
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RED.log.error(log._("server.uncaught-exception"));
if (err.stack) {
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RED.log.error(err.stack);
} else {
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RED.log.error(err);
}
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}
process.exit(1);
});
server.listen(settings.uiPort,settings.uiHost,function() {
if (settings.httpAdminRoot === false) {
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RED.log.info(log._("server.admin-ui-disabled"));
}
process.title = 'node-red';
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RED.log.info(log._("server.now-running", {listenpath:getListenPath()}));
});
} else {
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RED.log.info(log._("server.headless-mode"));
}
}).otherwise(function(err) {
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RED.log.error(log._("server.failed-to-start"));
if (err.stack) {
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RED.log.error(err.stack);
} else {
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RED.log.error(err);
}
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});
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process.on('uncaughtException',function(err) {
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util.log('[red] Uncaught Exception:');
if (err.stack) {
util.log(err.stack);
} else {
util.log(err);
}
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process.exit(1);
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});
process.on('SIGINT', function () {
RED.stop();
// TODO: need to allow nodes to close asynchronously before terminating the
// process - ie, promises
process.exit();
});