145 lines
4.4 KiB
TypeScript
145 lines
4.4 KiB
TypeScript
import { Server as TrackerServer } from 'bittorrent-tracker'
|
|
import express from 'express'
|
|
import { createServer } from 'http'
|
|
import proxyAddr from 'proxy-addr'
|
|
import { WebSocketServer } from 'ws'
|
|
import { Redis } from '@server/lib/redis'
|
|
import { logger } from '../helpers/logger'
|
|
import { CONFIG } from '../initializers/config'
|
|
import { TRACKER_RATE_LIMITS } from '../initializers/constants'
|
|
import { VideoFileModel } from '../models/video/video-file'
|
|
import { VideoStreamingPlaylistModel } from '../models/video/video-streaming-playlist'
|
|
|
|
const trackerRouter = express.Router()
|
|
|
|
let peersIps = {}
|
|
let peersIpInfoHash = {}
|
|
runPeersChecker()
|
|
|
|
const trackerServer = new TrackerServer({
|
|
http: false,
|
|
udp: false,
|
|
ws: false,
|
|
filter: async function (infoHash, params, cb) {
|
|
if (CONFIG.TRACKER.ENABLED === false) {
|
|
return cb(new Error('Tracker is disabled on this instance.'))
|
|
}
|
|
|
|
let ip: string
|
|
|
|
if (params.type === 'ws') {
|
|
ip = params.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 (CONFIG.TRACKER.REJECT_TOO_MANY_ANNOUNCES && 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}`))
|
|
}
|
|
|
|
try {
|
|
if (CONFIG.TRACKER.PRIVATE === false) return cb()
|
|
|
|
const videoFileExists = await VideoFileModel.doesInfohashExistCached(infoHash)
|
|
if (videoFileExists === true) return cb()
|
|
|
|
const playlistExists = await VideoStreamingPlaylistModel.doesInfohashExistCached(infoHash)
|
|
if (playlistExists === true) return cb()
|
|
|
|
cb(new Error(`Unknown infoHash ${infoHash} requested by ip ${ip}`))
|
|
|
|
// Close socket connection and block IP for a few time
|
|
if (params.type === 'ws') {
|
|
Redis.Instance.setTrackerBlockIP(ip)
|
|
.catch(err => logger.error('Cannot set tracker block ip.', { err }))
|
|
|
|
// setTimeout to wait filter response
|
|
setTimeout(() => params.socket.close(), 0)
|
|
}
|
|
} catch (err) {
|
|
logger.error('Error in tracker filter.', { err })
|
|
return cb(err)
|
|
}
|
|
}
|
|
})
|
|
|
|
if (CONFIG.TRACKER.ENABLED !== false) {
|
|
|
|
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 createWebsocketTrackerServer (app: express.Application) {
|
|
const server = createServer(app)
|
|
const wss = new WebSocketServer({ noServer: true })
|
|
|
|
wss.on('connection', function (ws, req) {
|
|
ws['ip'] = proxyAddr(req, CONFIG.TRUST_PROXY)
|
|
|
|
trackerServer.onWebSocketConnection(ws)
|
|
})
|
|
|
|
server.on('upgrade', (request: express.Request, socket, head) => {
|
|
if (request.url === '/tracker/socket') {
|
|
const ip = proxyAddr(request, CONFIG.TRUST_PROXY)
|
|
|
|
Redis.Instance.doesTrackerBlockIPExist(ip)
|
|
.then(result => {
|
|
if (result === true) {
|
|
logger.debug('Blocking IP %s from tracker.', ip)
|
|
|
|
socket.write('HTTP/1.1 403 Forbidden\r\n\r\n')
|
|
socket.destroy()
|
|
return
|
|
}
|
|
|
|
// FIXME: typings
|
|
return wss.handleUpgrade(request, socket as any, head, ws => wss.emit('connection', ws, request))
|
|
})
|
|
.catch(err => logger.error('Cannot check if tracker block ip exists.', { err }))
|
|
}
|
|
|
|
// Don't destroy socket, we have Socket.IO too
|
|
})
|
|
|
|
return server
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
export {
|
|
trackerRouter,
|
|
createWebsocketTrackerServer
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
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)
|
|
}
|