PeerTube/server/lib/activitypub/videos.ts

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import * as Bluebird from 'bluebird'
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import * as magnetUtil from 'magnet-uri'
import { join } from 'path'
import * as request from 'request'
import { ActivityIconObject } from '../../../shared/index'
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import { VideoTorrentObject } from '../../../shared/models/activitypub/objects'
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import { VideoPrivacy, VideoRateType } from '../../../shared/models/videos'
import { sanitizeAndCheckVideoTorrentObject } from '../../helpers/custom-validators/activitypub/videos'
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import { isVideoFileInfoHashValid } from '../../helpers/custom-validators/videos'
import { retryTransactionWrapper } from '../../helpers/database-utils'
import { logger } from '../../helpers/logger'
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import { doRequest, doRequestAndSaveToFile } from '../../helpers/requests'
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import { ACTIVITY_PUB, CONFIG, REMOTE_SCHEME, sequelizeTypescript, STATIC_PATHS, VIDEO_MIMETYPE_EXT } from '../../initializers'
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import { AccountVideoRateModel } from '../../models/account/account-video-rate'
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import { ActorModel } from '../../models/activitypub/actor'
import { TagModel } from '../../models/video/tag'
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import { VideoModel } from '../../models/video/video'
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import { VideoChannelModel } from '../../models/video/video-channel'
import { VideoFileModel } from '../../models/video/video-file'
import { VideoShareModel } from '../../models/video/video-share'
import { getOrCreateActorAndServerAndModel } from './actor'
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import { addVideoComments } from './video-comments'
import { crawlCollectionPage } from './crawl'
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function fetchRemoteVideoPreview (video: VideoModel, reject: Function) {
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const host = video.VideoChannel.Account.Actor.Server.host
const path = join(STATIC_PATHS.PREVIEWS, video.getPreviewName())
// We need to provide a callback, if no we could have an uncaught exception
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return request.get(REMOTE_SCHEME.HTTP + '://' + host + path, err => {
if (err) reject(err)
})
}
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async function fetchRemoteVideoDescription (video: VideoModel) {
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const host = video.VideoChannel.Account.Actor.Server.host
const path = video.getDescriptionPath()
const options = {
uri: REMOTE_SCHEME.HTTP + '://' + host + path,
json: true
}
const { body } = await doRequest(options)
return body.description ? body.description : ''
}
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function generateThumbnailFromUrl (video: VideoModel, icon: ActivityIconObject) {
const thumbnailName = video.getThumbnailName()
const thumbnailPath = join(CONFIG.STORAGE.THUMBNAILS_DIR, thumbnailName)
const options = {
method: 'GET',
uri: icon.url
}
return doRequestAndSaveToFile(options, thumbnailPath)
}
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async function videoActivityObjectToDBAttributes (videoChannel: VideoChannelModel,
videoObject: VideoTorrentObject,
to: string[] = []) {
const privacy = to.indexOf(ACTIVITY_PUB.PUBLIC) !== -1 ? VideoPrivacy.PUBLIC : VideoPrivacy.UNLISTED
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const duration = videoObject.duration.replace(/[^\d]+/, '')
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let language: string = null
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if (videoObject.language) {
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language = videoObject.language.identifier
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}
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let category: number = null
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if (videoObject.category) {
category = parseInt(videoObject.category.identifier, 10)
}
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let licence: number = null
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if (videoObject.licence) {
licence = parseInt(videoObject.licence.identifier, 10)
}
const description = videoObject.content || null
const support = videoObject.support || null
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return {
name: videoObject.name,
uuid: videoObject.uuid,
url: videoObject.id,
category,
licence,
language,
description,
support,
nsfw: videoObject.sensitive,
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commentsEnabled: videoObject.commentsEnabled,
channelId: videoChannel.id,
duration: parseInt(duration, 10),
createdAt: new Date(videoObject.published),
// FIXME: updatedAt does not seems to be considered by Sequelize
updatedAt: new Date(videoObject.updated),
views: videoObject.views,
likes: 0,
dislikes: 0,
remote: true,
privacy
}
}
function videoFileActivityUrlToDBAttributes (videoCreated: VideoModel, videoObject: VideoTorrentObject) {
const mimeTypes = Object.keys(VIDEO_MIMETYPE_EXT)
const fileUrls = videoObject.url.filter(u => {
return mimeTypes.indexOf(u.mimeType) !== -1 && u.mimeType.startsWith('video/')
})
if (fileUrls.length === 0) {
throw new Error('Cannot find video files for ' + videoCreated.url)
}
const attributes = []
for (const fileUrl of fileUrls) {
// Fetch associated magnet uri
const magnet = videoObject.url.find(u => {
return u.mimeType === 'application/x-bittorrent;x-scheme-handler/magnet' && u.width === fileUrl.width
})
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if (!magnet) throw new Error('Cannot find associated magnet uri for file ' + fileUrl.href)
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const parsed = magnetUtil.decode(magnet.href)
if (!parsed || isVideoFileInfoHashValid(parsed.infoHash) === false) throw new Error('Cannot parse magnet URI ' + magnet.href)
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const attribute = {
extname: VIDEO_MIMETYPE_EXT[ fileUrl.mimeType ],
infoHash: parsed.infoHash,
resolution: fileUrl.width,
size: fileUrl.size,
videoId: videoCreated.id
}
attributes.push(attribute)
}
return attributes
}
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function getOrCreateVideoChannel (videoObject: VideoTorrentObject) {
const channel = videoObject.attributedTo.find(a => a.type === 'Group')
if (!channel) throw new Error('Cannot find associated video channel to video ' + videoObject.url)
return getOrCreateActorAndServerAndModel(channel.id)
}
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async function getOrCreateVideo (videoObject: VideoTorrentObject, channelActor: ActorModel) {
logger.debug('Adding remote video %s.', videoObject.id)
return sequelizeTypescript.transaction(async t => {
const sequelizeOptions = {
transaction: t
}
const videoFromDatabase = await VideoModel.loadByUUIDOrURLAndPopulateAccount(videoObject.uuid, videoObject.id, t)
if (videoFromDatabase) return videoFromDatabase
const videoData = await videoActivityObjectToDBAttributes(channelActor.VideoChannel, videoObject, videoObject.to)
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const video = VideoModel.build(videoData)
// Don't block on request
generateThumbnailFromUrl(video, videoObject.icon)
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.catch(err => logger.warn('Cannot generate thumbnail of %s.', videoObject.id, { err }))
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const videoCreated = await video.save(sequelizeOptions)
const videoFileAttributes = videoFileActivityUrlToDBAttributes(videoCreated, videoObject)
if (videoFileAttributes.length === 0) {
throw new Error('Cannot find valid files for video %s ' + videoObject.url)
}
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const tasks = videoFileAttributes.map(f => VideoFileModel.create(f, { transaction: t }))
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await Promise.all(tasks)
const tags = videoObject.tag.map(t => t.name)
const tagInstances = await TagModel.findOrCreateTags(tags, t)
await videoCreated.$set('Tags', tagInstances, sequelizeOptions)
logger.info('Remote video with uuid %s inserted.', videoObject.uuid)
videoCreated.VideoChannel = channelActor.VideoChannel
return videoCreated
})
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}
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async function getOrCreateAccountAndVideoAndChannel (videoObject: VideoTorrentObject | string, actor?: ActorModel) {
if (typeof videoObject === 'string') {
const videoUrl = videoObject
const videoFromDatabase = await VideoModel.loadByUrlAndPopulateAccount(videoUrl)
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if (videoFromDatabase) {
return {
video: videoFromDatabase,
actor: videoFromDatabase.VideoChannel.Account.Actor,
channelActor: videoFromDatabase.VideoChannel.Actor
}
}
videoObject = await fetchRemoteVideo(videoUrl)
if (!videoObject) throw new Error('Cannot fetch remote video with url: ' + videoUrl)
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}
if (!actor) {
const actorObj = videoObject.attributedTo.find(a => a.type === 'Person')
if (!actorObj) throw new Error('Cannot find associated actor to video ' + videoObject.url)
actor = await getOrCreateActorAndServerAndModel(actorObj.id)
}
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const channelActor = await getOrCreateVideoChannel(videoObject)
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const options = {
arguments: [ videoObject, channelActor ],
errorMessage: 'Cannot insert the remote video with many retries.'
}
const video = await retryTransactionWrapper(getOrCreateVideo, options)
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// Process outside the transaction because we could fetch remote data
logger.info('Adding likes of video %s.', video.uuid)
await crawlCollectionPage<string>(videoObject.likes, (items) => createRates(items, video, 'like'))
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logger.info('Adding dislikes of video %s.', video.uuid)
await crawlCollectionPage<string>(videoObject.dislikes, (items) => createRates(items, video, 'dislike'))
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logger.info('Adding shares of video %s.', video.uuid)
await crawlCollectionPage<string>(videoObject.shares, (items) => addVideoShares(items, video))
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logger.info('Adding comments of video %s.', video.uuid)
await crawlCollectionPage<string>(videoObject.comments, (items) => addVideoComments(items, video))
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return { actor, channelActor, video }
}
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async function createRates (actorUrls: string[], video: VideoModel, rate: VideoRateType) {
let rateCounts = 0
const tasks: Bluebird<number>[] = []
for (const actorUrl of actorUrls) {
const actor = await getOrCreateActorAndServerAndModel(actorUrl)
const p = AccountVideoRateModel
.create({
videoId: video.id,
accountId: actor.Account.id,
type: rate
})
.then(() => rateCounts += 1)
tasks.push(p)
}
await Promise.all(tasks)
logger.info('Adding %d %s to video %s.', rateCounts, rate, video.uuid)
// This is "likes" and "dislikes"
await video.increment(rate + 's', { by: rateCounts })
return
}
async function addVideoShares (shareUrls: string[], instance: VideoModel) {
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for (const shareUrl of shareUrls) {
// Fetch url
const { body } = await doRequest({
uri: shareUrl,
json: true,
activityPub: true
})
if (!body || !body.actor) {
logger.warn('Cannot add remote share with url: %s, skipping...', shareUrl)
continue
}
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const actorUrl = body.actor
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const actor = await getOrCreateActorAndServerAndModel(actorUrl)
const entry = {
actorId: actor.id,
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videoId: instance.id,
url: shareUrl
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}
await VideoShareModel.findOrCreate({
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where: {
url: shareUrl
},
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defaults: entry
})
}
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}
export {
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getOrCreateAccountAndVideoAndChannel,
fetchRemoteVideoPreview,
fetchRemoteVideoDescription,
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generateThumbnailFromUrl,
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videoActivityObjectToDBAttributes,
videoFileActivityUrlToDBAttributes,
getOrCreateVideo,
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getOrCreateVideoChannel,
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addVideoShares
}
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// ---------------------------------------------------------------------------
async function fetchRemoteVideo (videoUrl: string): Promise<VideoTorrentObject> {
const options = {
uri: videoUrl,
method: 'GET',
json: true,
activityPub: true
}
logger.info('Fetching remote video %s.', videoUrl)
const { body } = await doRequest(options)
if (sanitizeAndCheckVideoTorrentObject(body) === false) {
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logger.debug('Remote video JSON is not valid.', { body })
return undefined
}
return body
}