import express from 'express' import { query } from 'express-validator' import LRUCache from 'lru-cache' import { basename, dirname } from 'path' import { exists, isUUIDValid } from '@server/helpers/custom-validators/misc' import { logger } from '@server/helpers/logger' import { LRU_CACHE } from '@server/initializers/constants' import { VideoModel } from '@server/models/video/video' import { VideoFileModel } from '@server/models/video/video-file' import { MStreamingPlaylist, MVideoFile, MVideoThumbnail } from '@server/types/models' import { HttpStatusCode } from '@shared/models' import { areValidationErrors, checkCanAccessVideoStaticFiles } from './shared' type LRUValue = { allowed: boolean video?: MVideoThumbnail file?: MVideoFile playlist?: MStreamingPlaylist } const staticFileTokenBypass = new LRUCache({ max: LRU_CACHE.STATIC_VIDEO_FILES_RIGHTS_CHECK.MAX_SIZE, ttl: LRU_CACHE.STATIC_VIDEO_FILES_RIGHTS_CHECK.TTL }) const ensureCanAccessVideoPrivateWebTorrentFiles = [ query('videoFileToken').optional().custom(exists), async (req: express.Request, res: express.Response, next: express.NextFunction) => { if (areValidationErrors(req, res)) return const token = extractTokenOrDie(req, res) if (!token) return const cacheKey = token + '-' + req.originalUrl if (staticFileTokenBypass.has(cacheKey)) { const { allowed, file, video } = staticFileTokenBypass.get(cacheKey) if (allowed === true) { res.locals.onlyVideo = video res.locals.videoFile = file return next() } return res.sendStatus(HttpStatusCode.FORBIDDEN_403) } const result = await isWebTorrentAllowed(req, res) staticFileTokenBypass.set(cacheKey, result) if (result.allowed !== true) return res.locals.onlyVideo = result.video res.locals.videoFile = result.file return next() } ] const ensureCanAccessPrivateVideoHLSFiles = [ query('videoFileToken').optional().custom(exists), async (req: express.Request, res: express.Response, next: express.NextFunction) => { if (areValidationErrors(req, res)) return const videoUUID = basename(dirname(req.originalUrl)) if (!isUUIDValid(videoUUID)) { logger.debug('Path does not contain valid video UUID to serve static file %s', req.originalUrl) return res.sendStatus(HttpStatusCode.FORBIDDEN_403) } const token = extractTokenOrDie(req, res) if (!token) return const cacheKey = token + '-' + videoUUID if (staticFileTokenBypass.has(cacheKey)) { const { allowed, file, playlist, video } = staticFileTokenBypass.get(cacheKey) if (allowed === true) { res.locals.onlyVideo = video res.locals.videoFile = file res.locals.videoStreamingPlaylist = playlist return next() } return res.sendStatus(HttpStatusCode.FORBIDDEN_403) } const result = await isHLSAllowed(req, res, videoUUID) staticFileTokenBypass.set(cacheKey, result) if (result.allowed !== true) return res.locals.onlyVideo = result.video res.locals.videoFile = result.file res.locals.videoStreamingPlaylist = result.playlist return next() } ] export { ensureCanAccessVideoPrivateWebTorrentFiles, ensureCanAccessPrivateVideoHLSFiles } // --------------------------------------------------------------------------- async function isWebTorrentAllowed (req: express.Request, res: express.Response) { const filename = basename(req.path) const file = await VideoFileModel.loadWithVideoByFilename(filename) if (!file) { logger.debug('Unknown static file %s to serve', req.originalUrl, { filename }) res.sendStatus(HttpStatusCode.FORBIDDEN_403) return { allowed: false } } const video = await VideoModel.load(file.getVideo().id) return { file, video, allowed: await checkCanAccessVideoStaticFiles({ req, res, video, paramId: video.uuid }) } } async function isHLSAllowed (req: express.Request, res: express.Response, videoUUID: string) { const filename = basename(req.path) const video = await VideoModel.loadWithFiles(videoUUID) if (!video) { logger.debug('Unknown static file %s to serve', req.originalUrl, { videoUUID }) res.sendStatus(HttpStatusCode.FORBIDDEN_403) return { allowed: false } } const file = await VideoFileModel.loadByFilename(filename) return { file, video, playlist: video.getHLSPlaylist(), allowed: await checkCanAccessVideoStaticFiles({ req, res, video, paramId: video.uuid }) } } function extractTokenOrDie (req: express.Request, res: express.Response) { const token = res.locals.oauth?.token.accessToken || req.query.videoFileToken if (!token) { return res.fail({ message: 'Bearer token is missing in headers or video file token is missing in URL query parameters', status: HttpStatusCode.FORBIDDEN_403 }) } return token }