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path: root/webserver.js
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#!/usr/bin/env node
var cmn=require("./modules/$common.js");
var app=require("express")(),
    http=require("http"),
    httpServer=http.Server(app),
    io=require("socket.io")(httpServer),
    url=require("url"),
    fs=require("fs"),
    util=require("util"),
    node_path=require("path"),
    bodyParser=require("body-parser"),
    basicAuth=require("basic-auth"),
    Logger=require("./logger");


if(process.argv.length>3){
	console.log("Pass optional port as first argument");
	process.exit(1);
}
var PORT=process.argv.length==3?+process.argv[2]:80;


// var reqlogger=new Logger("request_log.txt");


var whatpulse={"keys":"<??>","clicks":"<??>"};
function refreshWhatpulse(){
	http.get("http://api.whatpulse.org/user.php?user=tomsmeding&format=json&formatted=yes",function(res){
		var body="";
		res.on("data",function(data){body+=data;});
		res.on("end",function(){
			try{body=JSON.parse(body);}
			catch(e){return;}
			whatpulse.keys=body.Keys/*.replace(/,/g,"&nbsp;")*/;
			whatpulse.clicks=body.Clicks/*.replace(/,/g,"&nbsp;")*/;
		});
	}).on("error",function(err){
		console.log(`Whatpulse request error: ${err.message}`);
	});
}
setInterval(refreshWhatpulse,6*3600*1000); //every 6 hours
refreshWhatpulse();

// function simpleLogEscape(str){
// 	return str
// 			.replace(/\\/g,"\\\\")
// 			.replace(/\n/g,"\\n")
// 			.replace(/ /g,"\\_");
// }

// app.use(function(req,res,next){
// 	var line=simpleLogEscape(req.ip)+" "+
// 	         simpleLogEscape(req.method)+" "+
// 	         simpleLogEscape(req.hostname)+" "+
// 	         simpleLogEscape(req.url);
// 	if(req.headers["dnt"])line+=" dnt="+simpleLogEscape(req.headers["dnt"]);
// 	if(req.headers["referer"])line+=" referer="+simpleLogEscape(req.headers["referer"]);
// 	reqlogger.log(line);
// 	next();
// });

/*app.use(function (req, res, next) {
	console.log(req.subdomains);
	next();
});*/

app.use(bodyParser.text());


var module_list=fs.readdirSync("modules").filter(function(f){
	return ["$common.js",".DS_Store"].indexOf(f)==-1&&f[0]!="$";
});
for(i=0;i<module_list.length;i++){
	require("./modules/"+module_list[i]+"/"+module_list[i]+".js")(app,io,cmn.serverdir+"/modules/"+module_list[i]);
	console.log("Loaded module "+module_list[i]);
}


function requestFile(req,res,listdirs,path,origpath){
	fname=cmn.webfilesdir+path;
	console.log("Requesting file "+fname);
	if(!fs.existsSync(fname)){
		res.status(404).send("That file does not exist.");
		return;
	}
	var stats=fs.statSync(fname);
	if(stats.isFile()){
		res.sendFile(fname);
	} else if(stats.isDirectory()&&listdirs){
		var items=fs
			.readdirSync(fname)
			.filter(function(f){return f[0]!=".";})
			.map(function(f){
				try {
					if(fs.statSync(node_path.join(fname,f)).isDirectory())return f+"/";
					else return f;
				} catch(e){
					return null;
				}
			})
			.filter(function(f){
				return f!==null;
			});
		res.send(
			String(fs.readFileSync(cmn.serverdir+"/dirlisting.html"))
				.replace("<!--DIRDIR-->",path)
				.replace("[/*LISTINGLISTING*/]",JSON.stringify(items))
		);
	} else if(stats.isDirectory()&&fs.readdirSync(fname).indexOf("index.html")!=-1){
		if(origpath[origpath.length-1]!="/")origpath+="/";
		res.redirect(301,origpath+"index.html");
	} else {
		res.status(404).send("That file does not exist.");
		return;
	}
}

function makeUrlSafe(req,sliceLength){
	var parsed=url.parse(req.url);
	var part=parsed.pathname.slice(sliceLength);
	if(part=="")return "/";
	return part.replace(/\/\.+[^\/]*\//g,"/");
}



app.get("/",function(req,res){
	res.send(
		String(fs.readFileSync(cmn.serverdir+"/index.html"))
		.replace(/<!--<<PULSE-KEYS>>-->/,whatpulse["keys"])
		.replace(/<!--<<PULSE-CLICKS>>-->/,whatpulse["clicks"])
	);
});

app.get(["/f/univq","/f/univq/*"],cmn.authgen());

app.get(["/f","/f/*"],function(req,res){
	requestFile(req,res,false,unescape(makeUrlSafe(req,2)),req.url);
});

app.get(["/ff","/ff/*"],cmn.authgen());
app.get(["/ff","/ff/*"],function(req,res){
	requestFile(req,res,true,unescape(makeUrlSafe(req,3)),req.url);
});

app.get("/.well-known/*",function(req,res){
	requestFile(req,res,false,"/well-known"+unescape(makeUrlSafe(req,12)),req.url);
});

app.get("/google*.html",function(req,res){
	var url=unescape(makeUrlSafe(req,0));
	if(url.match(/^\/google[0-9a-fA-F]*\.html$/)){
		res.sendFile(__dirname+url);
	} else {
		res.status(404).send("That file does not exist.");
	}
});

["o","k","rip","rip2"].forEach(function(target){
	app.get("/"+target,function(req,res){
		res.sendFile(cmn.webfilesdir+"/"+target+".html");
	});
	app.get("/"+target+"/*",function(req,res){
		res.set('Content-Type', 'text/html');
		res.send(
			String(fs.readFileSync(cmn.webfilesdir+"/"+target+".html"))
			.replace("<!--MESSAGEMESSAGE-->",cmn.simpleHTMLescape(url.parse(req.url).pathname.slice(target.length+2)))
		);
	});
});

app.get("/dr",function(req,res){
	res.sendFile(cmn.webfilesdir+"/duckroll.html");
});

app.get(["/gpg","/pgp","/gpg.asc","/pgp.asc"],function(req,res){
	res.type("text/plain");
	res.sendFile(cmn.webfilesdir+"/pgp.asc");
});

app.get("/tomsg",function(req,res){
	res.sendFile(cmn.webfilesdir+"/tomsg.html");
});

app.get("/goioi",function(req,res){
	res.sendFile(cmn.webfilesdir+"/goioi.html");
});


/*app.get("/chat",function(req,res){
	res.redirect(301,"http://tomsmeding.com:81");
});*/


// Error-handling middleware
app.use(function(err,req,res,next){
	var id=new Date().getTime().toString()+Math.random().toFixed(10).slice(2);
	console.log("Error caught in app: (id="+id+")");
	console.log(err.stack);
	res.status(500).end("An internal error occurred; it has been logged with id "+id+".\n");
});

var server=httpServer.listen(PORT,function(){
	var host=server.address().address;
	var port=server.address().port;
	console.log("Server listening at http://"+host+":"+port);
});