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server.js
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server.js
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var bodyParser = require('body-parser'),
base64url = require('base64url'),
config = require('./config'),
cookieParser = require('cookie-parser'),
errorhandler = require('errorhandler'),
express = require('express'),
FIWAREStrategy = require('passport-fiware-oauth').OAuth2Strategy,
fs = require('fs'),
https = require('https'),
log = require('./lib/logger').logger.getLogger("Server"),
passport = require('passport'),
tmf = require('./controllers/tmf').tmf,
session = require('express-session'),
utils = require('./lib/utils');
/////////////////////////////////////////////////////////////////////
////////////////////////// CONFIG CHECKERS //////////////////////////
/////////////////////////////////////////////////////////////////////
var checkPrefix = function(prefix, byDefault) {
var finalPrefix = prefix === undefined ? byDefault : prefix;
// Remove the last slash
if (finalPrefix.slice(-1) == '/') {
finalPrefix = finalPrefix.slice(0, -1);
}
// If a prefix is set, the prefix MUST start with a slash
// When the prefix is not set, the slash is NOT required
if (finalPrefix.length > 0 && finalPrefix.charAt(0) !== '/') {
finalPrefix = '/' + finalPrefix;
}
return finalPrefix;
}
// TODO: Add more checkers
/////////////////////////////////////////////////////////////////////
/////////////////////////////// CONFIG //////////////////////////////
/////////////////////////////////////////////////////////////////////
// Default title for GUI
var DEFAULT_TITLE = 'TM Forum Portal';
// Get preferences and set up default values
config.sessionSecret = config.sessionSecret || 'keyboard cat';
config.https = config.https || {};
config.proxyPrefix = checkPrefix(config.proxyPrefix, '/proxy');
config.portalPrefix = checkPrefix(config.portalPrefix, '');
var PORT = config.https.enabled ?
config.https.port || 443 : // HTTPS
config.port || 80; // HTTP
var FIWARE_STRATEGY = new FIWAREStrategy({
clientID: config.oauth2.clientID,
clientSecret: config.oauth2.clientSecret,
callbackURL: config.oauth2.callbackURL
},
function(accessToken, refreshToken, profile, done) {
profile['accessToken'] = accessToken;
done(null, profile);
}
);
// Avoid existing on uncaught Exceptions
process.on('uncaughtException', function (err) {
log.error('Caught exception: ' + err);
});
process.env.NODE_TLS_REJECT_UNAUTHORIZED = "0";
/////////////////////////////////////////////////////////////////////
////////////////////////////// EXPRESS //////////////////////////////
/////////////////////////////////////////////////////////////////////
var app = express();
app.set('port', PORT);
app.use(errorhandler({ dumpExceptions: true, showStack: true }));
// Static files && templates
app.use(config.portalPrefix + '/', express.static(__dirname + '/public'));
app.set('views', __dirname + '/views');
app.set('view engine', 'ejs');
// Session
app.use(session({
secret: config.sessionSecret,
resave: true,
saveUninitialized: true,
}));
// Generic middlewares for handle requests
app.use(cookieParser());
app.use(bodyParser.text({
type: '*/*'
}));
/////////////////////////////////////////////////////////////////////
////////////////////////////// PASSPORT /////////////////////////////
/////////////////////////////////////////////////////////////////////
var ensureAuthenticated = function(req, res, next) {
if (!req.isAuthenticated()) {
var state = {'came_from_path': req.path};
var encodedState = base64url(JSON.stringify(state));
// This action will redirect the user the FIWARE Account portal,
// so the next callback is not required to be called
passport.authenticate('fiware', { scope: ['all_info'], state: encodedState })(req, res);
} else {
next();
}
}
passport.serializeUser(function(user, done) {
done(null, user);
});
passport.deserializeUser(function(obj, done) {
done(null, obj);
});
passport.use(FIWARE_STRATEGY);
// Passport middlewares
app.use(passport.initialize());
app.use(passport.session());
// Handler for the callback
app.get('/auth/fiware/callback', passport.authenticate('fiware', { failureRedirect: '/error' }),
function(req, res) {
var state = JSON.parse(base64url.decode(req.query.state));
var redirectPath = state.came_from_path !== undefined ? state.came_from_path : '/';
res.redirect(redirectPath);
});
/////////////////////////////////////////////////////////////////////
/////////////////////////////// PORTAL //////////////////////////////
/////////////////////////////////////////////////////////////////////
var renderTemplate = function(req, res, customTitle, content, viewName) {
// TODO: Maybe an object with extra properties.
// To be implemented if required!!
var validCustomTitle = customTitle !== undefined && customTitle !== '';
var title = validCustomTitle ? DEFAULT_TITLE + ' - ' + customTitle : DEFAULT_TITLE;
var properties = {
content: content,
viewName: viewName,
user: req.user,
title: title,
contextPath: config.portalPrefix,
proxyPath: config.proxyPrefix,
accountHost: config.oauth2.server
}
res.render('base', properties);
res.end();
}
app.get(config.portalPrefix + '/', ensureAuthenticated, function(req, res) {
renderTemplate(req, res, 'Marketplace', 'home-content', 'Customer');
});
app.get(config.portalPrefix + '/mystock', ensureAuthenticated, function(req, res) {
renderTemplate(req, res, 'My Stock', 'mystock-content', 'Seller');
});
/////////////////////////////////////////////////////////////////////
//////////////////////////////// APIs ///////////////////////////////
/////////////////////////////////////////////////////////////////////
var headerAuthentication = function(req, res, next) {
try {
var authToken = utils.getAuthToken(req.headers);
FIWARE_STRATEGY.userProfile(authToken, function(err, userProfile) {
if (err) {
log.warn("The provider auth-token is not valid");
utils.sendUnauthorized(res, "invalid auth-token")
} else {
req.user = userProfile;
next();
}
});
} catch (err) {
log.warn(err)
utils.sendUnauthorized(res, err);
}
}
// Middleware: Add CORS headers. Handle OPTIONS requests.
app.use(function (req, res, next) {
'use strict';
res.header('Access-Control-Allow-Origin', '*');
res.header('Access-Control-Allow-Methods', 'HEAD, POST, GET, OPTIONS, DELETE');
res.header('Access-Control-Allow-Headers', 'origin, content-type, X-Auth-Token, Tenant-ID, Authorization');
//log.debug("New Request: ", req.method);
if (req.method == 'OPTIONS') {
log.debug("CORS request");
res.statusCode = 200;
res.header('Content-Length', '0');
res.send();
res.end();
} else {
next();
}
});
// Public Paths are not protected by the Proxy
for (var p in config.publicPaths) {
log.debug('Public Path', config.publicPaths[p]);
app.all(config.proxyPrefix + '/' + config.publicPaths[p], tmf.public);
}
app.all(config.proxyPrefix + '/*', headerAuthentication, tmf.checkPermissions);
/////////////////////////////////////////////////////////////////////
//////////////////////////// START SERVER ///////////////////////////
/////////////////////////////////////////////////////////////////////
log.info('Starting PEP proxy in port ' + PORT + '.');
if (config.https.enabled === true) {
var options = {
key: fs.readFileSync(config.https.keyFile),
cert: fs.readFileSync(config.https.certFile)
};
https.createServer(options, function(req,res) {
app.handle(req, res);
}).listen(app.get('port'));
} else {
app.listen(app.get('port'));
}