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main.js
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main.js
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//oxo
const oxoKeyPairs = require("oxo-keypairs")
//config
const SelfURL = "ws://127.0.0.1:3000"
//standalone server
const Seed = oxoKeyPairs.generateSeed("obeTvR9XDbUwquA6JPQhmbgaCCaiFa2rvf", 'secp256k1')
const OtherServer = []
//interconnect servers
//const Seed = "xp1jB6s7H1WjXrpUSUHb3fv12Fdge"
//const OtherServer = [{ "URL": "ws://127.0.0.1:3333", "Address": "o5gVGxqPFCvzTAQ5BpMnwtS8xYvnXQDJoU" }]
//keep alive
process.on('uncaughtException', function(err) {
//打印出错误
console.log(err)
//打印出错误的调用栈方便调试
console.log(err.stack)
})
//json
const Schema = require('./schema.js')
function cloneJson(json) {
return JSON.parse(JSON.stringify(json))
}
function toSetUniq(arr) {
return Array.from(new Set(arr))
}
//ws
const WebSocket = require('ws')
//crypto
const Crypto = require('crypto')
function hasherSHA512(str) {
let sha512 = Crypto.createHash("sha512")
sha512.update(str)
return sha512.digest('hex')
}
function halfSHA512(str) {
return hasherSHA512(str).toUpperCase().substr(0, 64)
}
function quarterSHA512(str) {
return hasherSHA512(str).toUpperCase().substr(0, 32);
}
function strToHex(str) {
let arr = []
let length = str.length
for (let i = 0; i < length; i++) {
arr[i] = (str.charCodeAt(i).toString(16))
}
return arr.join('').toUpperCase()
}
function sign(msg, sk) {
let msgHexStr = strToHex(msg)
let sig = oxoKeyPairs.sign(msgHexStr, sk)
return sig
}
function verifySignature(msg, sig, pk) {
let hexStrMsg = strToHex(msg)
try {
return oxoKeyPairs.verify(hexStrMsg, sig, pk)
} catch (e) {
return false
}
}
function VerifyJsonSignature(json) {
let sig = json["Signature"]
delete json["Signature"]
let tmpMsg = JSON.stringify(json)
if (verifySignature(tmpMsg, sig, json.PublicKey)) {
json["Signature"] = sig
return true
} else {
console.log('signature invalid...')
return false
}
}
let ActionCode = {
"Declare": 100,
"ObjectResponse": 101,
"BulletinRequest": 201,
"BulletinFileRequest": 202,
"ChatDH": 301,
"ChatMessage": 302,
"ChatSync": 303,
"PrivateFileRequest": 304,
"GroupRequest": 401,
"GroupManageSync": 402,
"GroupDH": 403,
"GroupMessageSync": 404,
"GroupFileRequest": 405
}
//message
const MessageCode = {
"JsonSchemaInvalid": 0, //json schema invalid...
"SignatureInvalid": 1, //signature invalid...
"TimestampInvalid": 2, //timestamp invalid...
"BalanceInsufficient": 3, //balance insufficient...
"NewConnectionOpening": 4, //address changed...
"AddressChanged": 5, //new connection with same address is opening...
"ToSelfIsForbidden": 6, //To self is forbidden...
"ToNotExist": 7, //To not exist...
"GatewayDeclareSuccess": 1000 //gateway declare success...
}
const ObjectType = {
"Bulletin": 101,
"BulletinFile": 102,
"PrivateFile": 201,
"GroupManage": 301,
"GroupMessage": 302,
"GroupFile": 303
}
function strServerMessage(msgCode) {
msgJson = { "Action": ActionCode["ServerMessage"], "Code": msgCode }
return JSON.stringify(msgJson)
}
function sendServerMessage(ws, msgCode) {
ws.send(strServerMessage(msgCode))
}
//client connection
let ClientConns = {}
function fetchClientConnAddress(ws) {
for (let address in ClientConns) {
if (ClientConns[address] == ws) {
return address
}
}
return null
}
let ClientServer = null
//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
//client listener
function teminateClientConn(ws) {
ws.close()
let connAddress = fetchClientConnAddress(ws)
if (connAddress != null) {
console.log(`###################LOG################### client disconnect... <${connAddress}>`)
delete ClientConns[connAddress]
}
}
const sqlite3 = require('sqlite3')
let DB = null
let BulletinCount = 0
let PageSize = 10
let PageCount = BulletinCount / PageSize
let PageLinks = ''
function initDB() {
//建库:数据库名为账号地址
DB = new sqlite3.Database(`./cache.db`)
//建表
DB.serialize(() => {
//为账号地址起名
DB.run(`CREATE TABLE IF NOT EXISTS BULLETINS(
hash VARCHAR(32) PRIMARY KEY,
pre_hash VARCHAR(32),
address VARCHAR(35) NOT NULL,
sequence INTEGER NOT NULL,
content TEXT NOT NULL,
quote TEXT NOT NULL,
json TEXT NOT NULL,
signed_at INTEGER NOT NULL,
created_at INTEGER NOT NULL)`, err => {
if (err) {
console.log(err)
}
})
})
let SQL = `SELECT * FROM BULLETINS ORDER BY created_at DESC`
DB.all(SQL, (err, items) => {
if (err) {
console.log(err)
} else {
BulletinCount = items.length
PageCount = BulletinCount / PageSize + 1
PageLinks = ''
let PageLinkArray = []
if (PageCount > 1) {
for (let i = 1; i <= PageCount; i++) {
PageLinkArray.push(`<a href="/bulletins?page=${i}">${i}</a>`)
}
PageLinks = PageLinkArray.join(' ')
}
}
})
}
initDB()
////////hard copy from client<<<<<<<<
const crypto = require("crypto")
const keypair = oxoKeyPairs.deriveKeypair(Seed)
const Address = oxoKeyPairs.deriveAddress(keypair.publicKey)
const PublicKey = keypair.publicKey
const PrivateKey = keypair.privateKey
function sign(msg, sk) {
let msgHexStr = strToHex(msg);
let sig = oxoKeyPairs.sign(msgHexStr, sk);
return sig;
}
function GenBulletinRequest(address, sequence, to) {
let json = {
"Action": ActionCode["BulletinRequest"],
"Address": address,
"Sequence": sequence,
"To": to,
"Timestamp": Date.now(),
"PublicKey": PublicKey
}
let sig = sign(JSON.stringify(json), PrivateKey)
json.Signature = sig
let strJson = JSON.stringify(json)
return strJson
}
function GenObjectResponse(object, to) {
let json = {
"Action": ActionCode.ObjectResponse,
"Object": object,
"To": to,
"Timestamp": Date.now(),
"PublicKey": PublicKey,
}
let sig = sign(JSON.stringify(json), PrivateKey)
json.Signature = sig
let strJson = JSON.stringify(json)
return strJson
}
function GenDeclare() {
//send declare to server
let json = {
"Action": ActionCode["Declare"],
"Timestamp": new Date().getTime(),
"PublicKey": PublicKey
}
let sig = sign(JSON.stringify(json), PrivateKey)
json.Signature = sig
let strJson = JSON.stringify(json)
return strJson
}
////////hard copy from client>>>>>>>>
function CacheBulletin(bulletin) {
let timestamp = Date.now()
let hash = quarterSHA512(JSON.stringify(bulletin))
let address = oxoKeyPairs.deriveAddress(bulletin.PublicKey)
let bulletinMessage = JSON.stringify(bulletin)
//console.log(hash)
let SQL = `INSERT INTO BULLETINS (hash, pre_hash, address, sequence, content, quote, json, signed_at, created_at)
VALUES ('${hash}', '${bulletin.PreHash}', '${address}', '${bulletin.Sequence}', '${bulletin.Content}', '${JSON.stringify(bulletin.Quote)}', '${bulletinMessage}', ${bulletin.Timestamp}, ${timestamp})`
DB.run(SQL, err => {
if (err) {
console.log(err)
} else {
BulletinCount = BulletinCount + 1
PageCount = BulletinCount / PageSize + 1
PageLinks = ''
let PageLinkArray = []
if (PageCount > 1) {
for (let i = 1; i <= PageCount; i++) {
PageLinkArray.push(`<a href="/bulletins?page=${i}">${i}</a>`)
}
PageLinks = PageLinkArray.join(' ')
}
//Brocdcast to OtherServer
for (let i in OtherServer) {
let ws = ClientConns[OtherServer[i]["Address"]]
if (ws != undefined && ws.readyState == WebSocket.OPEN) {
ws.send(GenObjectResponse(bulletin, OtherServer[i]["Address"]))
}
}
}
})
}
function handleClientMessage(message, json) {
if (json["Action"] == ActionCode["BulletinRequest"]) {
//send cache bulletin
let SQL = `SELECT * FROM BULLETINS WHERE address = "${json["Address"]}" AND sequence = "${json["Sequence"]}"`
DB.get(SQL, (err, item) => {
if (err) {
console.log(err)
} else {
if (item != null) {
let address = oxoKeyPairs.deriveAddress(json["PublicKey"])
ClientConns[address].send(item.json)
}
}
})
} else if (json["To"] == Address && json["Action"] == ActionCode["ObjectResponse"] && json["Object"]["ObjectType"] == ObjectType["Bulletin"]) {
CacheBulletin(json["Object"])
//fetch more bulletin
let address = oxoKeyPairs.deriveAddress(json["Object"].PublicKey)
if (ClientConns[address] != null && ClientConns[address].readyState == WebSocket.OPEN) {
let msg = GenBulletinRequest(address, json["Object"].Sequence + 1, address)
ClientConns[address].send(msg)
}
}
}
function checkClientMessage(ws, message) {
//console.log(`###################LOG################### Client Message:`)
//console.log(`${message}`)
let json = Schema.checkClientSchema(message)
if (json == false) {
//json格式不合法
sendServerMessage(ws, MessageCode["JsonSchemaInvalid"])
//console.log(`${message}`)
teminateClientConn(ws)
} else {
let address = oxoKeyPairs.deriveAddress(json["PublicKey"])
if (ClientConns[address] == ws) {
//连接已经通过"声明消息"校验过签名
handleClientMessage(message, json)
} else {
let connAddress = fetchClientConnAddress(ws)
if (connAddress != null && connAddress != address) {
//using different address in same connection
sendServerMessage(ws, MessageCode["AddressChanged"])
teminateClientConn(ws)
} else {
if (!VerifyJsonSignature(json)) {
//"声明消息"签名不合法
sendServerMessage(ws, MessageCode["SignatureInvalid"])
teminateClientConn(ws)
return
}
if (json.Timestamp + 60000 < Date.now()) {
//"声明消息"生成时间过早
sendServerMessage(ws, MessageCode["TimestampInvalid"])
teminateClientConn(ws)
return
}
if (connAddress == null && ClientConns[address] == null) {
//new connection and new address
//当前连接无对应地址,当前地址无对应连接,全新连接
console.log(`connection established from client <${address}>`)
ClientConns[address] = ws
//handleClientMessage(message, json)
let SQL = `SELECT * FROM BULLETINS WHERE address = "${address}" ORDER BY sequence DESC`
DB.get(SQL, (err, item) => {
if (err) {
console.log(err)
} else {
let sequence = 1
if (item != null) {
sequence = item.sequence + 1
}
let msg = GenBulletinRequest(address, sequence, address)
ClientConns[address].send(msg)
}
})
} else if (ClientConns[address] != ws && ClientConns[address].readyState == WebSocket.OPEN) {
//new connection kick old conection with same address
//当前地址有对应连接,断开旧连接,当前地址对应到当前连接
sendServerMessage(ClientConns[address], MessageCode["NewConnectionOpening"])
ClientConns[address].close()
ClientConns[address] = ws
//handleClientMessage(message, json)
} else {
ws.send("WTF...")
teminateClientConn(ws)
}
}
}
}
}
function startClientServer() {
if (ClientServer == null) {
ClientServer = new WebSocket.Server({
port: 3000, //to bind on 80, must use 'sudo node main.js'
clientTracking: true,
maxPayload: 150 * 1024
})
ClientServer.on('connection', function connection(ws) {
ws.on('message', function incoming(message) {
checkClientMessage(ws, message)
})
ws.on('close', function close() {
let connAddress = fetchClientConnAddress(ws)
if (connAddress != null) {
console.log(`client <${connAddress}> disconnect...`)
delete ClientConns[connAddress]
}
})
})
}
}
startClientServer()
function keepOtherServerConn() {
let notConnected = []
for (let i in OtherServer) {
if (ClientConns[OtherServer[i]["Address"]] == undefined) {
notConnected.push(OtherServer[i])
}
}
if (notConnected.length == 0) {
return
}
let random = Math.floor(Math.random() * (notConnected.length))
let randomServerUrl = notConnected[random]["URL"]
if (randomServerUrl != null) {
console.log(`keepOtherServerConn connecting to StaticCounter ${randomServerUrl}`)
try {
var ws = new WebSocket(randomServerUrl)
ws.on('open', function open() {
ws.send(GenDeclare())
ClientConns[notConnected[random]["Address"]] = ws
})
ws.on('message', function incoming(message) {
checkClientMessage(ws, message)
})
ws.on('close', function close() {
let connAddress = fetchClientConnAddress(ws)
if (connAddress != null) {
console.log(`client <${connAddress}> disconnect...`)
delete ClientConns[connAddress]
}
})
} catch (e) {
console.log('keepOtherServerConn error...')
}
}
}
let OtherServerConnJob = null
if (OtherServerConnJob == null) {
OtherServerConnJob = setInterval(keepOtherServerConn, 5000);
}
//start web server
const http = require('http')
const url = require("url")
const bulletins_reg = /^\/bulletins\?page=\d+/
const bulletin_reg = /^\/bulletin\/[0123456789ABCDEF]{32}$/
const bulletin_json_reg = /^\/bulletin\/[0123456789ABCDEF]{32}\/json$/
function add0(m) { return m < 10 ? '0' + m : m }
function timestamp_format(timestamp) {
var time = new Date(timestamp);
var y = time.getFullYear();
var m = time.getMonth() + 1;
var d = time.getDate();
var h = time.getHours();
var mm = time.getMinutes();
var s = time.getSeconds();
return y + '-' + add0(m) + '-' + add0(d) + ' ' + add0(h) + ':' + add0(mm) + ':' + add0(s);
}
http.createServer(function(request, response) {
let path = url.parse(request.url).path;
if (path == "/") {
response.writeHeader(200, {
"Content-Type": "text/html"
});
response.write(`
<!DOCTYPE html>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<head>
<title>oxo-bulletin-site</title>
</head>
<body bgcolor="#8FBC8F">
<h1><a href="/bulletins">缓存的公告</a></h1>
<h2><a href="https://github.com/oxogenesis/oxo-chat-client/releases">客户端下载</a></h2>
<h2>本站服务地址:${SelfURL}</h2>
<h2>本站服务账号:${Address}</h2>
<h2>{"URL": "${SelfURL}", "Address": "${Address}"}</h2>
</body>
</html>
`);
response.end();
} else if (path == "/bulletins" || bulletins_reg.test(path)) {
let page = 1
if (path != "/bulletins") {
page = ~~path.replace(/^\/bulletins\?page=/, '')
}
let SQL = `SELECT * FROM BULLETINS ORDER BY created_at DESC LIMIT ${PageSize} OFFSET ${(page - 1) * PageSize}`
DB.all(SQL, (err, items) => {
if (err) {
console.log(err)
} else {
let lis = ''
for (let i = 0; i < items.length; i++) {
lis = lis + `<li><a href="/bulletin/${items[i].hash}"><code>${items[i].address}#${items[i].sequence}</code></a> 缓存@${timestamp_format(items[i].created_at)}</li>`
}
response.writeHeader(200, {
"Content-Type": "text/html"
});
response.write(`
<!DOCTYPE html>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<head>
<title>oxo-bulletin-site</title>
</head>
<body bgcolor="#8FBC8F">
<h1><a href="/bulletins">缓存的公告</a></h1>
<ul>
${lis}
</ul>
${PageLinks}
</body>
</html>
`);
response.end();
}
})
} else if (bulletin_reg.test(path)) {
let hash = path.replace(/^\/bulletin\//, '')
let SQL = `SELECT * FROM BULLETINS WHERE hash = "${hash}"`
DB.get(SQL, (err, item) => {
if (err) {
console.log(err)
} else {
if (item == null) {
response.writeHeader(200, {
"Content-Type": "text/html"
});
response.write(`
<!DOCTYPE html>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<head>
<title>oxo-bulletin-site</title>
</head>
<body bgcolor="#8FBC8F">
<h1><a href="/bulletins">缓存的公告</a></h1>
<h1>Bulletin#${hash}</h1>
<h1>未被缓存...</h1>
</body>
</html>
`)
response.end();
} else {
let quote = ''
let quotes = JSON.parse(item.quote)
if (quotes.length != '') {
quote = '<h3>引用</h3><ul>'
for (let i = quotes.length - 1; i >= 0; i--) {
quote = quote + `<li><a href="/bulletin/${quotes[i].Hash}">${quotes[i].Address}#${quotes[i].Sequence}</a></li>`
}
quote = quote + '</ul><hr>'
}
response.writeHeader(200, {
"Content-Type": "text/html"
});
let pre_bulletin = ''
if (item.pre_hash != 'F4C2EB8A3EBFC7B6D81676D79F928D0E') {
pre_bulletin = `<h3><a href="/bulletin/${item.pre_hash}">上一篇</a></h3>`
}
response.write(`
<!DOCTYPE html>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<head>
<title>oxo-bulletin-site</title>
</head>
<body bgcolor="#8FBC8F">
<h1><a href="/bulletins">缓存的公告</a></h1>
<h1>Bulletin#${hash}</h1>
<h3>${item.address}
<a href="/bulletin/${hash}/json">#${item.sequence}</a></h3>
<h3>发布@${timestamp_format(item.signed_at)}</h3>
${pre_bulletin}
<hr>
${quote}
<h3>${item.content}</h3>
</body>
</html>
`);
response.end();
}
}
})
} else if (bulletin_json_reg.test(path)) {
let hash = path.replace(/^\/bulletin\//, '')
hash = hash.replace(/\/json/, '')
let SQL = `SELECT * FROM BULLETINS WHERE hash = "${hash}"`
DB.get(SQL, (err, item) => {
if (err) {
console.log(err)
} else {
if (item == null) {
response.writeHeader(200, {
"Content-Type": "text/html"
});
response.write(`
<!DOCTYPE html>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<head>
<title>oxo-bulletin-site</title>
</head>
<body bgcolor="#8FBC8F">
<h1><a href="/bulletins">缓存的公告</a></h1>
<h1>Bulletin#${hash}</h1>
<h1>未被缓存...</h1>
</body>
</html>
`)
response.end();
} else {
response.writeHeader(200, {
"Content-Type": "application/json; charset=utf-8"
});
response.write(`${item.json}`);
response.end();
}
}
})
} else {
response.writeHeader(404, {
"Content-Type": "text/html"
});
response.end();
}
})
.listen(8000);