cylon/lib/api.js

124 lines
3.0 KiB
JavaScript

/*
* Cylon API
* cylonjs.com
*
* Copyright (c) 2013-2015 The Hybrid Group
* Licensed under the Apache 2.0 license.
*/
"use strict";
var fs = require("fs"),
path = require("path");
var express = require("express"),
bodyParser = require("body-parser");
var Logger = require("./logger"),
_ = require("./lodash");
var API = module.exports = function API(opts) {
if (opts == null) {
opts = {};
}
_.forEach(this.defaults, function(def, name) {
this[name] = _.has(opts, name) ? opts[name] : def;
}, this);
this.createServer();
this.express.set("title", "Cylon API Server");
this.express.use(this.setupAuth());
this.express.use(bodyParser.json());
this.express.use(bodyParser.urlencoded({ extended: true }));
this.express.use(express["static"](__dirname + "/../node_modules/robeaux/"));
// set CORS headers for API requests
this.express.use(function(req, res, next) {
res.set("Access-Control-Allow-Origin", this.CORS || "*");
res.set("Access-Control-Allow-Headers", "Content-Type");
res.set("Content-Type", "application/json");
return next();
}.bind(this));
// extracts command params from request
this.express.use(function(req, res, next) {
req.commandParams = _.values(req.body);
return next();
});
// load route definitions
this.express.use("/api", require("./api/routes"));
// error handling
this.express.use(function(err, req, res, next) {
res.status(500).json({ error: err.message || "An error occured."});
next();
});
};
API.prototype.defaults = {
host: "127.0.0.1",
port: "3000",
auth: false,
CORS: "",
ssl: {
key: path.normalize(__dirname + "/api/ssl/server.key"),
cert: path.normalize(__dirname + "/api/ssl/server.crt")
}
};
API.prototype.createServer = function createServer() {
this.express = express();
//configure ssl if requested
if (this.ssl && typeof(this.ssl) === "object") {
var https = require("https");
this.server = https.createServer({
key: fs.readFileSync(this.ssl.key),
cert: fs.readFileSync(this.ssl.cert)
}, this.express);
} else {
var str = "API using insecure connection. ";
str += "We recommend using an SSL certificate with Cylon.";
Logger.warn(str);
this.server = this.express;
}
};
API.prototype.setupAuth = function setupAuth() {
var authfn = function auth(req, res, next) { next(); };
if (!!this.auth && typeof(this.auth) === "object" && this.auth.type) {
var type = this.auth.type,
module = "./api/auth/" + type,
filename = path.normalize(__dirname + "/" + module + ".js"),
exists = fs.existsSync(filename);
if (exists) {
authfn = require(filename)(this.auth);
}
}
return authfn;
};
API.prototype.listen = function() {
this.server.listen(this.port, this.host, null, function() {
var title = this.express.get("title");
var protocol = this.ssl ? "https" : "http",
str;
str = "Listening at " + protocol + "://" + this.host + ":" + this.port;
Logger.info(title + " is now online.");
Logger.info(str);
}.bind(this));
};