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node-red/red.js

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/**
* Copyright 2013 IBM Corp.
*
* 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 RED = require("./red/red.js");
var server;
var app = express();
var settingsFile = "./settings";
var flowFile;
for (var argp = 2;argp < process.argv.length;argp+=1) {
var v = process.argv[argp];
if (v == "--settings" || v == "-s") {
if (argp+1 == process.argv.length) {
console.log("Missing argument to --settings");
return;
}
argp++;
settingsFile = process.argv[argp];
} else {
flowFile = v;
}
}
var settings = require(settingsFile);
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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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}
settings.httpRoot = settings.httpRoot||"/";
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if (settings.httpRoot[0] != "/") {
settings.httpRoot = "/"+settings.httpRoot;
}
if (settings.httpRoot.slice(-1) != "/") {
settings.httpRoot = settings.httpRoot + "/";
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}
settings.uiPort = settings.uiPort||1880;
settings.uiHost = settings.uiHost||"0.0.0.0";
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if (settings.httpAuth) {
app.use(settings.httpRoot,
express.basicAuth(function(user, pass) {
return user === settings.httpAuth.user && crypto.createHash('md5').update(pass,'utf8').digest('hex') === settings.httpAuth.pass;
})
);
}
settings.flowFile = flowFile || settings.flowFile;
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var red = RED.init(server,settings);
app.use(settings.httpRoot,red);
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if (settings.httpStatic) {
app.use("/",express.static(settings.httpStatic));
}
RED.start();
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var listenPath = 'http'+(settings.https?'s':'')+'://'+
(settings.uiHost == '0.0.0.0'?'127.0.0.1':settings.uiHost)+
':'+settings.uiPort+settings.httpRoot;
server.listen(settings.uiPort,settings.uiHost,function() {
util.log('[red] Server now running at '+listenPath);
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});
process.on('uncaughtException',function(err) {
if (err.errno === "EADDRINUSE") {
util.log('[red] Unable to listen on '+listenPath);
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util.log('[red] Error: port in use');
} else {
util.log('[red] Uncaught Exception:');
util.log(err.stack);
}
process.exit(1);
});
process.on('SIGINT', function () {
RED.stop();
// TODO: need to allow nodes to close asynchronously before terminating the
// process - ie, promises
process.exit();
});