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// static server (8089)
var http = require('http')
var serve = require('ecstatic')
var open = require('open')
http.createServer(
serve({ root: __dirname})
).listen(8089)
open('http://localhost:8089')
// ws server (8080)
var bog = require('./bog')
var WS = require('ws')
var fs = require('fs')
var nacl = require('tweetnacl')
nacl.util = require('tweetnacl-util')
var homedir = require('os').homedir()
var bogdir = homedir + '/.bogbook/bogs/'
if (!fs.existsSync(bogdir)){
fs.mkdirSync(bogdir)
}
var wserve = new WS.Server({ port: 8080 })
bog.keys().then(key => {
wserve.on('connection', function (ws) {
ws.on('message', function (message) {
var req = JSON.parse(message)
console.log(req)
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.seq === 0) {
console.log(req.requester + ' asked the full log of ' + unboxedreq.author)
fs.readFile(bogdir + unboxedreq.author, 'UTF-8', function (err, data) {
if (data) {
//var feed = JSON.stringify(data)
var feed = data
bog.box(feed, req.requester, key).then(boxed => {
var obj = {
requester: key.publicKey,
box: boxed
}
ws.send(JSON.stringify(obj))
console.log('Sent full log of ' + unboxedreq.author + ' to ' + req.requester)
})
}
})
}
if (unboxedreq.seq) {
console.log(req.requester + ' asked for feed ' + unboxedreq.author + ' after sequence ' + unboxedreq.seq)
// check to see if we have the feed on disk
fs.readFile(bogdir + unboxedreq.author, 'UTF-8', function (err, data) {
if (data) {
// TODO open the latest message, and check the sequence number
var feed = JSON.parse(data)
bog.open(feed[0]).then(msg => {
if (unboxedreq.seq === msg.seq) {
console.log(unboxedreq.author + '\'s feed is identical, sending nothing to client')
}
if (unboxedreq.seq > msg.seq) {
// right now the client is still sending the entire log, which works just fine but isn't optimal
console.log('client feed is longer, requesting diff from client')
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) {
console.log('client feed is shorter, sending diff to client')
var diff = JSON.stringify(feed.slice(0, msg.seq - unboxedreq.seq))
bog.box(diff, req.requester, key).then(boxed => {
var obj = {
requester: key.publicKey,
box: boxed
}
ws.send(JSON.stringify(obj))
})
}
})
} else {
// if we don't have the feed, request the feed from the client and save
console.log('We don\'t have the log on the server, requesting log from ' + req.requester )
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)) {
// first check to make sure that we have an entire log
bog.open(unboxedreq[0]).then(msg => {
if (msg.seq === unboxedreq.length) {
fs.writeFile(bogdir + msg.author, JSON.stringify(unboxedreq), 'UTF-8', function (err, success) {
console.log('Saved full log of ' + msg.author + ' sent by ' + req.requester)
})
} 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) {
console.log('combined existing feed of ' + msg.author + ' with diff and saved to server')
})
}
})
})
}
})
}
})
}
})
})
})
|
