]>
Commit | Line | Data |
---|---|---|
1 | import { logger } from '../helpers/logger' | |
2 | import * as express from 'express' | |
3 | import * as http from 'http' | |
4 | import * as bitTorrentTracker from 'bittorrent-tracker' | |
5 | import * as proxyAddr from 'proxy-addr' | |
6 | import { Server as WebSocketServer } from 'ws' | |
7 | import { TRACKER_RATE_LIMITS } from '../initializers/constants' | |
8 | import { VideoFileModel } from '../models/video/video-file' | |
9 | import { VideoStreamingPlaylistModel } from '../models/video/video-streaming-playlist' | |
10 | import { CONFIG } from '../initializers/config' | |
11 | ||
12 | const TrackerServer = bitTorrentTracker.Server | |
13 | ||
14 | const trackerRouter = express.Router() | |
15 | ||
16 | let peersIps = {} | |
17 | let peersIpInfoHash = {} | |
18 | runPeersChecker() | |
19 | ||
20 | const trackerServer = new TrackerServer({ | |
21 | http: false, | |
22 | udp: false, | |
23 | ws: false, | |
24 | dht: false, | |
25 | filter: async function (infoHash, params, cb) { | |
26 | if (CONFIG.TRACKER.ENABLED === false) { | |
27 | return cb(new Error('Tracker is disabled on this instance.')) | |
28 | } | |
29 | ||
30 | let ip: string | |
31 | ||
32 | if (params.type === 'ws') { | |
33 | ip = params.socket.ip | |
34 | } else { | |
35 | ip = params.httpReq.ip | |
36 | } | |
37 | ||
38 | const key = ip + '-' + infoHash | |
39 | ||
40 | peersIps[ip] = peersIps[ip] ? peersIps[ip] + 1 : 1 | |
41 | peersIpInfoHash[key] = peersIpInfoHash[key] ? peersIpInfoHash[key] + 1 : 1 | |
42 | ||
43 | if (CONFIG.TRACKER.REJECT_TOO_MANY_ANNOUNCES && peersIpInfoHash[key] > TRACKER_RATE_LIMITS.ANNOUNCES_PER_IP_PER_INFOHASH) { | |
44 | return cb(new Error(`Too many requests (${peersIpInfoHash[key]} of ip ${ip} for torrent ${infoHash}`)) | |
45 | } | |
46 | ||
47 | try { | |
48 | if (CONFIG.TRACKER.PRIVATE === false) return cb() | |
49 | ||
50 | const videoFileExists = await VideoFileModel.doesInfohashExistCached(infoHash) | |
51 | if (videoFileExists === true) return cb() | |
52 | ||
53 | const playlistExists = await VideoStreamingPlaylistModel.doesInfohashExist(infoHash) | |
54 | if (playlistExists === true) return cb() | |
55 | ||
56 | return cb(new Error(`Unknown infoHash ${infoHash}`)) | |
57 | } catch (err) { | |
58 | logger.error('Error in tracker filter.', { err }) | |
59 | return cb(err) | |
60 | } | |
61 | } | |
62 | }) | |
63 | ||
64 | if (CONFIG.TRACKER.ENABLED !== false) { | |
65 | ||
66 | trackerServer.on('error', function (err) { | |
67 | logger.error('Error in tracker.', { err }) | |
68 | }) | |
69 | ||
70 | trackerServer.on('warning', function (err) { | |
71 | logger.warn('Warning in tracker.', { err }) | |
72 | }) | |
73 | } | |
74 | ||
75 | const onHttpRequest = trackerServer.onHttpRequest.bind(trackerServer) | |
76 | trackerRouter.get('/tracker/announce', (req, res) => onHttpRequest(req, res, { action: 'announce' })) | |
77 | trackerRouter.get('/tracker/scrape', (req, res) => onHttpRequest(req, res, { action: 'scrape' })) | |
78 | ||
79 | function createWebsocketTrackerServer (app: express.Application) { | |
80 | const server = http.createServer(app) | |
81 | const wss = new WebSocketServer({ noServer: true }) | |
82 | ||
83 | wss.on('connection', function (ws, req) { | |
84 | ws['ip'] = proxyAddr(req, CONFIG.TRUST_PROXY) | |
85 | ||
86 | trackerServer.onWebSocketConnection(ws) | |
87 | }) | |
88 | ||
89 | server.on('upgrade', (request: express.Request, socket, head) => { | |
90 | if (request.path === '/tracker/socket') { | |
91 | wss.handleUpgrade(request, socket, head, ws => wss.emit('connection', ws, request)) | |
92 | } | |
93 | ||
94 | // Don't destroy socket, we have Socket.IO too | |
95 | }) | |
96 | ||
97 | return server | |
98 | } | |
99 | ||
100 | // --------------------------------------------------------------------------- | |
101 | ||
102 | export { | |
103 | trackerRouter, | |
104 | createWebsocketTrackerServer | |
105 | } | |
106 | ||
107 | // --------------------------------------------------------------------------- | |
108 | ||
109 | function runPeersChecker () { | |
110 | setInterval(() => { | |
111 | logger.debug('Checking peers.') | |
112 | ||
113 | for (const ip of Object.keys(peersIpInfoHash)) { | |
114 | if (peersIps[ip] > TRACKER_RATE_LIMITS.ANNOUNCES_PER_IP) { | |
115 | logger.warn('Peer %s made abnormal requests (%d).', ip, peersIps[ip]) | |
116 | } | |
117 | } | |
118 | ||
119 | peersIpInfoHash = {} | |
120 | peersIps = {} | |
121 | }, TRACKER_RATE_LIMITS.INTERVAL) | |
122 | } |