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import cors from 'cors'
import express from 'express'
import { PassThrough, pipeline } from 'stream'
import { logger } from '@server/helpers/logger'
import { StreamReplacer } from '@server/helpers/stream-replacer'
import { OBJECT_STORAGE_PROXY_PATHS } from '@server/initializers/constants'
import { injectQueryToPlaylistUrls } from '@server/lib/hls'
import { getHLSFileReadStream, getWebTorrentFileReadStream } from '@server/lib/object-storage'
import {
asyncMiddleware,
ensureCanAccessPrivateVideoHLSFiles,
ensureCanAccessVideoPrivateWebTorrentFiles,
ensurePrivateObjectStorageProxyIsEnabled,
optionalAuthenticate
} from '@server/middlewares'
import { HttpStatusCode } from '@shared/models'
import { buildReinjectVideoFileTokenQuery, doReinjectVideoFileToken } from './shared/m3u8-playlist'
import { GetObjectCommandOutput } from '@aws-sdk/client-s3'
const objectStorageProxyRouter = express.Router()
objectStorageProxyRouter.use(cors())
objectStorageProxyRouter.get(OBJECT_STORAGE_PROXY_PATHS.PRIVATE_WEBSEED + ':filename',
ensurePrivateObjectStorageProxyIsEnabled,
optionalAuthenticate,
asyncMiddleware(ensureCanAccessVideoPrivateWebTorrentFiles),
asyncMiddleware(proxifyWebTorrent)
)
objectStorageProxyRouter.get(OBJECT_STORAGE_PROXY_PATHS.STREAMING_PLAYLISTS.PRIVATE_HLS + ':videoUUID/:filename',
ensurePrivateObjectStorageProxyIsEnabled,
optionalAuthenticate,
asyncMiddleware(ensureCanAccessPrivateVideoHLSFiles),
asyncMiddleware(proxifyHLS)
)
// ---------------------------------------------------------------------------
export {
objectStorageProxyRouter
}
async function proxifyWebTorrent (req: express.Request, res: express.Response) {
const filename = req.params.filename
logger.debug('Proxifying WebTorrent file %s from object storage.', filename)
try {
const { response: s3Response, stream } = await getWebTorrentFileReadStream({
filename,
rangeHeader: req.header('range')
})
setS3Headers(res, s3Response)
return stream.pipe(res)
} catch (err) {
return handleObjectStorageFailure(res, err)
}
}
async function proxifyHLS (req: express.Request, res: express.Response) {
const playlist = res.locals.videoStreamingPlaylist
const video = res.locals.onlyVideo
const filename = req.params.filename
logger.debug('Proxifying HLS file %s from object storage.', filename)
try {
const { response: s3Response, stream } = await getHLSFileReadStream({
playlist: playlist.withVideo(video),
filename,
rangeHeader: req.header('range')
})
setS3Headers(res, s3Response)
const streamReplacer = filename.endsWith('.m3u8') && doReinjectVideoFileToken(req)
? new StreamReplacer(line => injectQueryToPlaylistUrls(line, buildReinjectVideoFileTokenQuery(req, filename.endsWith('master.m3u8'))))
: new PassThrough()
return pipeline(
stream,
streamReplacer,
res,
err => {
if (!err) return
handleObjectStorageFailure(res, err)
}
)
} catch (err) {
return handleObjectStorageFailure(res, err)
}
}
function handleObjectStorageFailure (res: express.Response, err: Error) {
if (err.name === 'NoSuchKey') {
logger.debug('Could not find key in object storage to proxify private HLS video file.', { err })
return res.sendStatus(HttpStatusCode.NOT_FOUND_404)
}
return res.fail({
status: HttpStatusCode.INTERNAL_SERVER_ERROR_500,
message: err.message,
type: err.name
})
}
function setS3Headers (res: express.Response, s3Response: GetObjectCommandOutput) {
if (s3Response.$metadata.httpStatusCode === HttpStatusCode.PARTIAL_CONTENT_206) {
res.setHeader('Content-Range', s3Response.ContentRange)
res.status(HttpStatusCode.PARTIAL_CONTENT_206)
}
}
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