Port of server-side Facebook authentication example

node-facebook-auth

var url = require("url");
var express = require('express');
var https = require("https");
var server = express.createServer();

function getContent(options, callback) {
	var req = https.request(options, function(res) {
		var body = "";
		res.on('data', function (chunk) {
			body += chunk;
		});
		
		res.on('end', function() {
			callback(body);
		});
	});
	
	req.end();
}

server.get("/fbauth", function(req, res) {
	var appId = "YOUR_APP_ID";
    var appSecret = "YOUR_SECRET";
    var myUrl = "http://YOUR_SERVER/fbauth";

	var code = url.parse(req.url, true).query.code;

    if(!code) {
        var dialogUrl = "http://www.facebook.com/dialog/oauth?client_id=" + appId + "&redirect_uri=" + encodeURIComponent(myUrl);
        res.redirect(dialogUrl);
		return;
    }

    var tokenUrl = {
		host: "graph.facebook.com",
		method: "GET",
		path: "/oauth/access_token?client_id=" + appId + "&redirect_uri=" + encodeURIComponent(myUrl) + "&client_secret=" + appSecret + "&code=" + code
	}

    getContent(tokenUrl, function(token) {
		var graphUrl = {
			host: "graph.facebook.com",
			method: "GET",
			path: "/me?" + token
		};
		
		getContent(graphUrl, function(user) {
			user = (user) ? JSON.parse(user) : {};
			res.send("Hello <a href='" + user.link + "'>" + user.name + "</a>");
		})
	});
});

server.listen(80);