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const HTTPPORT = 8089
const WSPORT = 8080
const URL = 'localhost'
const ADVERTISEMENTS = true
var ads = require('./ads')
const fullURL = 'http://' + URL + ':' + HTTPPORT + '/'
if (process.argv[2] === 'verbose') {
var VERBOSE = true
} else {
var VERBOSE = false
}
console.log('Verbose output is ' + VERBOSE + ' run with `node server verbose` to see all output')
console.log('Advertisements are ' + ADVERTISEMENTS)
// log messages
function printAsk(req, unboxedreq) {
if (VERBOSE) {
console.log(req.requester + ' asked for feed ' + unboxedreq.author + ' after sequence ' + unboxedreq.seq)
}
}
function printNewFeed (msg, req) {
if (VERBOSE)
console.log('Saved full log of ' + msg.author + ' sent by ' + req.requester)
else
console.log('NEW FEED from ' + msg.author)
}
function printUpdateFeed (msg, req) {
if (VERBOSE)
console.log('combined existing feed of ' + msg.author + ' sent from ' + req.requester + ' with diff and saved to server')
else
console.log('NEW UPDATE from ' + msg.author)
}
function printNoFeed (msg, req) {
if (VERBOSE) {
console.log('We don\'t have the log on the server, requesting log from ' + req.requester )
}
}
function printClientLonger (msg, req) {
if (VERBOSE) {
console.log(req.requester + '\'s feed of ' + msg.author + ' is longer, requesting diff from ' + req.requester)
}
}
function printClientShorter (msg, req, baserange, endrange) {
if (VERBOSE) {
console.log(req.requester + ' feed of ' + msg.author + ' is shorter, sending from ' + baserange + ' to ' + endrange + ' to ' + req.requester)
}
}
function printFeedIdentical (msg, req) {
if (VERBOSE) {
console.log(msg.author + '\'s feed sent from ' + req.requester + ' is identical')
}
}
function printSendAd (msg, req) {
if (VERBOSE) {
console.log('sent ad ' + msg.content + ' to ' + req.requester)
}
}
// static server (8089)
var fs = require('fs')
var http = require('http')
var serve = require('ecstatic')
var open = require('open')
http.createServer(
serve({ root: __dirname})
).listen(HTTPPORT)
open(fullURL)
console.log('Bogbook is running at: ' + fullURL)
// ws server (8080)
var bog = require('./bog')
var WS = require('ws')
var nacl = require('tweetnacl')
nacl.util = require('tweetnacl-util')
var homedir = require('os').homedir()
var bogdir = homedir + '/.bogbook/bogs/'
var addir = homedir + '/.bogbook/ads/'
if (!fs.existsSync(homedir + '/.bogbook/')) {fs.mkdirSync(homedir + '/.bogbook/')}
if (!fs.existsSync(bogdir)){fs.mkdirSync(bogdir)}
var wserve = new WS.Server({ port: WSPORT })
bog.keys().then(key => {
wserve.on('connection', function (ws) {
ws.on('message', function (message) {
var req = JSON.parse(message)
if (req.sendpub) {
ws.send(key.publicKey)
} else {
bog.unbox(req.box, req.requester, key).then(unboxed => {
var unboxedreq = JSON.parse(nacl.util.encodeUTF8(unboxed))
if (unboxedreq.type == 'ad') {
var hex = Buffer.from(nacl.hash(nacl.util.decodeUTF8(unboxedreq.signature))).toString('hex')
var obj = {
hash: hex,
author: unboxedreq.author,
signature: unboxedreq.signature,
views: 0
}
fs.writeFile(addir + hex, JSON.stringify(obj), 'UTF-8', function () {
console.log('Saved as ' + hex)
})
ws.close()
}
if (unboxedreq.seq >= 0) {
printAsk(req, unboxedreq)
fs.readFile(bogdir + unboxedreq.author, 'UTF-8', function (err, data) {
if (data) {
var feed = JSON.parse(data)
bog.open(feed[0]).then(msg => {
if (unboxedreq.seq === msg.seq) {
printFeedIdentical(msg, req)
if (ADVERTISEMENTS) {
if (Math.floor(Math.random() * 4) == 2) {
fs.readdir(addir, function (err, adfiles) {
if (adfiles[0]) {
var num = Math.floor(Math.random() * (adfiles.length))
fs.readFile(addir + adfiles[num], 'UTF-8', function (err, adFile) {
var obj = JSON.parse(adFile)
var ad = {
author: obj.author,
name: fullURL,
content: obj.signature,
timestamp: Date.now(),
views: obj.views
}
if ((obj.views > 100) && (obj.author != '@Q++V5BbvWIg8B+TqtC9ZKFhetruuw+nOgxEqfjlOZI0=')) {
fs.unlinkSync(addir + obj.hash)
//console.log('REMOVING AD')
} else {
obj.views++
fs.writeFileSync(addir + obj.hash, JSON.stringify(obj), 'UTF-8')
}
printSendAd(ad, req)
//console.log('SENDING AD')
bog.box(JSON.stringify(ad), req.requester, key).then(boxed => {
sendobj = {
requester: key.publicKey,
box: boxed
}
ws.send(JSON.stringify(sendobj))
ws.close()
})
})
} else {
ads.make('Hello World.')
}
})
}
}
}
if (unboxedreq.seq > msg.seq) {
printClientLonger(msg, req)
var reqdiff = JSON.stringify({author: unboxedreq.author, seq: msg.seq})
bog.box(reqdiff, req.requester, key).then(boxed => {
var obj = {
requester: key.publicKey,
box: boxed
}
ws.send(JSON.stringify(obj))
})
}
if (unboxedreq.seq < msg.seq) {
var endrange = feed.length - unboxedreq.seq - 25
if (endrange < 0) {
endrange = feed.length - unboxedreq.seq - 1
}
var baserange = feed.length - unboxedreq.seq
printClientShorter(msg, req, baserange, endrange)
var diff = JSON.stringify(
feed.slice(
endrange,
baserange)
)
bog.box(diff, req.requester, key).then(boxed => {
var obj = {
requester: key.publicKey,
box: boxed
}
ws.send(JSON.stringify(obj))
ws.close()
})
}
})
} else {
printNoFeed(unboxedreq, req)
var reqwhole = JSON.stringify({author: unboxedreq.author, seq: 0})
bog.box(reqwhole, req.requester, key).then(boxed => {
var obj = {
requester: key.publicKey,
box: boxed
}
ws.send(JSON.stringify(obj))
})
}
})
} else if (Array.isArray(unboxedreq)) {
bog.open(unboxedreq[0]).then(msg => {
if (msg.seq === unboxedreq.length) {
fs.writeFile(bogdir + msg.author, JSON.stringify(unboxedreq), 'UTF-8', function (err, success) {
printNewFeed(msg, req)
})
} if (msg.seq > unboxedreq.length) {
fs.readFile(bogdir + msg.author, 'UTF-8', function (err, data) {
var feed = JSON.parse(data)
bog.open(feed[0]).then(lastmsg => {
if (unboxedreq.length + lastmsg.seq === msg.seq) {
var newlog = unboxedreq.concat(feed)
fs.writeFile(bogdir + msg.author, JSON.stringify(newlog), 'UTF-8', function (err, success) {
printUpdateFeed(msg, req)
})
}
})
})
}
})
}
})
}
})
})
})
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