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Add tracker rate limiter

This commit is contained in:
Chocobozzz 2018-06-26 16:53:24 +02:00
parent 11fa7d392a
commit 9b67da3d9b
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GPG key ID: 583A612D890159BE
4 changed files with 107 additions and 33 deletions

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@ -10,13 +10,8 @@ if (isTestInstance()) {
// ----------- Node modules -----------
import * as bodyParser from 'body-parser'
import * as express from 'express'
import * as http from 'http'
import * as morgan from 'morgan'
import * as bitTorrentTracker from 'bittorrent-tracker'
import * as cors from 'cors'
import { Server as WebSocketServer } from 'ws'
const TrackerServer = bitTorrentTracker.Server
process.title = 'peertube'
@ -75,7 +70,9 @@ import {
feedsRouter,
staticRouter,
servicesRouter,
webfingerRouter
webfingerRouter,
trackerRouter,
createWebsocketServer
} from './server/controllers'
import { Redis } from './server/lib/redis'
import { BadActorFollowScheduler } from './server/lib/schedulers/bad-actor-follow-scheduler'
@ -116,33 +113,6 @@ app.use(bodyParser.json({
limit: '500kb'
}))
// ----------- Tracker -----------
const trackerServer = new TrackerServer({
http: false,
udp: false,
ws: false,
dht: false
})
trackerServer.on('error', function (err) {
logger.error('Error in websocket tracker.', err)
})
trackerServer.on('warning', function (err) {
logger.error('Warning in websocket tracker.', err)
})
const server = http.createServer(app)
const wss = new WebSocketServer({ server: server, path: '/tracker/socket' })
wss.on('connection', function (ws) {
trackerServer.onWebSocketConnection(ws)
})
const onHttpRequest = trackerServer.onHttpRequest.bind(trackerServer)
app.get('/tracker/announce', (req, res) => onHttpRequest(req, res, { action: 'announce' }))
app.get('/tracker/scrape', (req, res) => onHttpRequest(req, res, { action: 'scrape' }))
// ----------- Views, routes and static files -----------
// API
@ -155,6 +125,7 @@ app.use('/services', servicesRouter)
app.use('/', activityPubRouter)
app.use('/', feedsRouter)
app.use('/', webfingerRouter)
app.use('/', trackerRouter)
// Static files
app.use('/', staticRouter)
@ -181,6 +152,8 @@ app.use(function (err, req, res, next) {
return res.status(err.status || 500).end()
})
const server = createWebsocketServer(app)
// ----------- Run -----------
async function startApplication () {

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@ -5,3 +5,4 @@ export * from './feeds'
export * from './services'
export * from './static'
export * from './webfinger'
export * from './tracker'

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@ -0,0 +1,91 @@
import { logger } from '../helpers/logger'
import * as express from 'express'
import * as http from 'http'
import * as bitTorrentTracker from 'bittorrent-tracker'
import * as proxyAddr from 'proxy-addr'
import { Server as WebSocketServer } from 'ws'
import { CONFIG, TRACKER_RATE_LIMITS } from '../initializers/constants'
const TrackerServer = bitTorrentTracker.Server
const trackerRouter = express.Router()
let peersIps = {}
let peersIpInfoHash = {}
runPeersChecker()
const trackerServer = new TrackerServer({
http: false,
udp: false,
ws: false,
dht: false,
filter: function (infoHash, params, cb) {
let ip: string
if (params.type === 'ws') {
ip = params.socket.ip
} else {
ip = params.httpReq.ip
}
const key = ip + '-' + infoHash
peersIps[ip] = peersIps[ip] ? peersIps[ip] + 1 : 1
peersIpInfoHash[key] = peersIpInfoHash[key] ? peersIpInfoHash[key] + 1 : 1
if (peersIpInfoHash[key] > TRACKER_RATE_LIMITS.ANNOUNCES_PER_IP_PER_INFOHASH) {
return cb(new Error(`Too many requests (${peersIpInfoHash[ key ]} of ip ${ip} for torrent ${infoHash}`))
}
return cb()
}
})
trackerServer.on('error', function (err) {
logger.error('Error in tracker.', { err })
})
trackerServer.on('warning', function (err) {
logger.warn('Warning in tracker.', { err })
})
const onHttpRequest = trackerServer.onHttpRequest.bind(trackerServer)
trackerRouter.get('/tracker/announce', (req, res) => onHttpRequest(req, res, { action: 'announce' }))
trackerRouter.get('/tracker/scrape', (req, res) => onHttpRequest(req, res, { action: 'scrape' }))
function createWebsocketServer (app: express.Application) {
const server = http.createServer(app)
const wss = new WebSocketServer({ server: server, path: '/tracker/socket' })
wss.on('connection', function (ws, req) {
const ip = proxyAddr(req, CONFIG.TRUST_PROXY)
ws['ip'] = ip
trackerServer.onWebSocketConnection(ws)
})
return server
}
// ---------------------------------------------------------------------------
export {
trackerRouter,
createWebsocketServer
}
// ---------------------------------------------------------------------------
function runPeersChecker () {
setInterval(() => {
logger.debug('Checking peers.')
for (const ip of Object.keys(peersIpInfoHash)) {
if (peersIps[ip] > TRACKER_RATE_LIMITS.ANNOUNCES_PER_IP) {
logger.warn('Peer %s made abnormal requests (%d).', ip, peersIps[ip])
}
}
peersIpInfoHash = {}
peersIps = {}
}, TRACKER_RATE_LIMITS.INTERVAL)
}

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@ -450,6 +450,14 @@ const FEEDS = {
// ---------------------------------------------------------------------------
const TRACKER_RATE_LIMITS = {
INTERVAL: 60000 * 5, // 5 minutes
ANNOUNCES_PER_IP_PER_INFOHASH: 10, // maximum announces per torrent in the interval
ANNOUNCES_PER_IP: 30 // maximum announces for all our torrents in the interval
}
// ---------------------------------------------------------------------------
// Special constants for a test instance
if (isTestInstance() === true) {
ACTOR_FOLLOW_SCORE.BASE = 20
@ -482,6 +490,7 @@ export {
AVATARS_SIZE,
ACCEPT_HEADERS,
BCRYPT_SALT_SIZE,
TRACKER_RATE_LIMITS,
CACHE,
CONFIG,
CONSTRAINTS_FIELDS,