server/lib/activitypub/videos.ts

   1 import * as Bluebird from 'bluebird'
   2 import * as magnetUtil from 'magnet-uri'
   3 import { join } from 'path'
   4 import * as request from 'request'
   5 import { ActivityIconObject } from '../../../shared/index'
   6 import { VideoTorrentObject } from '../../../shared/models/activitypub/objects'
   7 import { VideoPrivacy } from '../../../shared/models/videos'
   8 import { isVideoTorrentObjectValid } from '../../helpers/custom-validators/activitypub/videos'
   9 import { isVideoFileInfoHashValid } from '../../helpers/custom-validators/videos'
  10 import { retryTransactionWrapper } from '../../helpers/database-utils'
  11 import { logger } from '../../helpers/logger'
  12 import { doRequest, doRequestAndSaveToFile } from '../../helpers/requests'
  13 import { ACTIVITY_PUB, CONFIG, REMOTE_SCHEME, sequelizeTypescript, STATIC_PATHS, VIDEO_MIMETYPE_EXT } from '../../initializers'
  14 import { ActorModel } from '../../models/activitypub/actor'
  15 import { TagModel } from '../../models/video/tag'
  16 import { VideoModel } from '../../models/video/video'
  17 import { VideoChannelModel } from '../../models/video/video-channel'
  18 import { VideoFileModel } from '../../models/video/video-file'
  19 import { VideoShareModel } from '../../models/video/video-share'
  20 import { getOrCreateActorAndServerAndModel } from './actor'
  21
  22 function fetchRemoteVideoPreview (video: VideoModel, reject: Function) {
  23   const host = video.VideoChannel.Account.Actor.Server.host
  24   const path = join(STATIC_PATHS.PREVIEWS, video.getPreviewName())
  25
  26   // We need to provide a callback, if no we could have an uncaught exception
  27   return request.get(REMOTE_SCHEME.HTTP + '://' + host + path, err => {
  28     if (err) reject(err)
  29   })
  30 }
  31
  32 async function fetchRemoteVideoDescription (video: VideoModel) {
  33   const host = video.VideoChannel.Account.Actor.Server.host
  34   const path = video.getDescriptionPath()
  35   const options = {
  36     uri: REMOTE_SCHEME.HTTP + '://' + host + path,
  37     json: true
  38   }
  39
  40   const { body } = await doRequest(options)
  41   return body.description ? body.description : ''
  42 }
  43
  44 function generateThumbnailFromUrl (video: VideoModel, icon: ActivityIconObject) {
  45   const thumbnailName = video.getThumbnailName()
  46   const thumbnailPath = join(CONFIG.STORAGE.THUMBNAILS_DIR, thumbnailName)
  47
  48   const options = {
  49     method: 'GET',
  50     uri: icon.url
  51   }
  52   return doRequestAndSaveToFile(options, thumbnailPath)
  53 }
  54
  55 async function videoActivityObjectToDBAttributes (videoChannel: VideoChannelModel,
  56                                                   videoObject: VideoTorrentObject,
  57                                                   to: string[] = [],
  58                                                   cc: string[] = []) {
  59   let privacy = VideoPrivacy.PRIVATE
  60   if (to.indexOf(ACTIVITY_PUB.PUBLIC) !== -1) privacy = VideoPrivacy.PUBLIC
  61   else if (cc.indexOf(ACTIVITY_PUB.PUBLIC) !== -1) privacy = VideoPrivacy.UNLISTED
  62
  63   const duration = videoObject.duration.replace(/[^\d]+/, '')
  64   let language = null
  65   if (videoObject.language) {
  66     language = parseInt(videoObject.language.identifier, 10)
  67   }
  68
  69   let category = null
  70   if (videoObject.category) {
  71     category = parseInt(videoObject.category.identifier, 10)
  72   }
  73
  74   let licence = null
  75   if (videoObject.licence) {
  76     licence = parseInt(videoObject.licence.identifier, 10)
  77   }
  78
  79   let description = null
  80   if (videoObject.content) {
  81     description = videoObject.content
  82   }
  83
  84   return {
  85     name: videoObject.name,
  86     uuid: videoObject.uuid,
  87     url: videoObject.id,
  88     category,
  89     licence,
  90     language,
  91     description,
  92     nsfw: videoObject.nsfw,
  93     commentsEnabled: videoObject.commentsEnabled,
  94     channelId: videoChannel.id,
  95     duration: parseInt(duration, 10),
  96     createdAt: new Date(videoObject.published),
  97     // FIXME: updatedAt does not seems to be considered by Sequelize
  98     updatedAt: new Date(videoObject.updated),
  99     views: videoObject.views,
 100     likes: 0,
 101     dislikes: 0,
 102     remote: true,
 103     privacy
 104   }
 105 }
 106
 107 function videoFileActivityUrlToDBAttributes (videoCreated: VideoModel, videoObject: VideoTorrentObject) {
 108   const mimeTypes = Object.keys(VIDEO_MIMETYPE_EXT)
 109   const fileUrls = videoObject.url.filter(u => {
 110     return mimeTypes.indexOf(u.mimeType) !== -1 && u.mimeType.startsWith('video/')
 111   })
 112
 113   if (fileUrls.length === 0) {
 114     throw new Error('Cannot find video files for ' + videoCreated.url)
 115   }
 116
 117   const attributes = []
 118   for (const fileUrl of fileUrls) {
 119     // Fetch associated magnet uri
 120     const magnet = videoObject.url.find(u => {
 121       return u.mimeType === 'application/x-bittorrent;x-scheme-handler/magnet' && u.width === fileUrl.width
 122     })
 123
 124     if (!magnet) throw new Error('Cannot find associated magnet uri for file ' + fileUrl.href)
 125
 126     const parsed = magnetUtil.decode(magnet.href)
 127     if (!parsed || isVideoFileInfoHashValid(parsed.infoHash) === false) throw new Error('Cannot parse magnet URI ' + magnet.href)
 128
 129     const attribute = {
 130       extname: VIDEO_MIMETYPE_EXT[ fileUrl.mimeType ],
 131       infoHash: parsed.infoHash,
 132       resolution: fileUrl.width,
 133       size: fileUrl.size,
 134       videoId: videoCreated.id
 135     }
 136     attributes.push(attribute)
 137   }
 138
 139   return attributes
 140 }
 141
 142 async function getOrCreateVideo (videoObject: VideoTorrentObject, channelActor: ActorModel) {
 143   logger.debug('Adding remote video %s.', videoObject.id)
 144
 145   return sequelizeTypescript.transaction(async t => {
 146     const sequelizeOptions = {
 147       transaction: t
 148     }
 149     const videoFromDatabase = await VideoModel.loadByUUIDOrURLAndPopulateAccount(videoObject.uuid, videoObject.id, t)
 150     if (videoFromDatabase) return videoFromDatabase
 151
 152     const videoData = await videoActivityObjectToDBAttributes(channelActor.VideoChannel, videoObject, videoObject.to, videoObject.cc)
 153     const video = VideoModel.build(videoData)
 154
 155     // Don't block on request
 156     generateThumbnailFromUrl(video, videoObject.icon)
 157       .catch(err => logger.warn('Cannot generate thumbnail of %s.', videoObject.id, err))
 158
 159     const videoCreated = await video.save(sequelizeOptions)
 160
 161     const videoFileAttributes = videoFileActivityUrlToDBAttributes(videoCreated, videoObject)
 162     if (videoFileAttributes.length === 0) {
 163       throw new Error('Cannot find valid files for video %s ' + videoObject.url)
 164     }
 165
 166     const tasks = videoFileAttributes.map(f => VideoFileModel.create(f, { transaction: t }))
 167     await Promise.all(tasks)
 168
 169     const tags = videoObject.tag.map(t => t.name)
 170     const tagInstances = await TagModel.findOrCreateTags(tags, t)
 171     await videoCreated.$set('Tags', tagInstances, sequelizeOptions)
 172
 173     logger.info('Remote video with uuid %s inserted.', videoObject.uuid)
 174
 175     videoCreated.VideoChannel = channelActor.VideoChannel
 176     return videoCreated
 177   })
 178 }
 179
 180 async function getOrCreateAccountAndVideoAndChannel (videoObject: VideoTorrentObject | string, actor?: ActorModel) {
 181   if (typeof videoObject === 'string') {
 182     const videoFromDatabase = await VideoModel.loadByUrlAndPopulateAccount(videoObject)
 183     if (videoFromDatabase) {
 184       return {
 185         video: videoFromDatabase,
 186         actor: videoFromDatabase.VideoChannel.Account.Actor,
 187         channelActor: videoFromDatabase.VideoChannel.Actor
 188       }
 189     }
 190
 191     videoObject = await fetchRemoteVideo(videoObject)
 192     if (!videoObject) throw new Error('Cannot fetch remote video')
 193   }
 194
 195   if (!actor) {
 196     const actorObj = videoObject.attributedTo.find(a => a.type === 'Person')
 197     if (!actorObj) throw new Error('Cannot find associated actor to video ' + videoObject.url)
 198
 199     actor = await getOrCreateActorAndServerAndModel(actorObj.id)
 200   }
 201
 202   const channel = videoObject.attributedTo.find(a => a.type === 'Group')
 203   if (!channel) throw new Error('Cannot find associated video channel to video ' + videoObject.url)
 204
 205   const channelActor = await getOrCreateActorAndServerAndModel(channel.id)
 206
 207   const options = {
 208     arguments: [ videoObject, channelActor ],
 209     errorMessage: 'Cannot insert the remote video with many retries.'
 210   }
 211
 212   const video = await retryTransactionWrapper(getOrCreateVideo, options)
 213
 214   return { actor, channelActor, video }
 215 }
 216
 217 async function addVideoShares (instance: VideoModel, shareUrls: string[]) {
 218   for (const shareUrl of shareUrls) {
 219     // Fetch url
 220     const { body } = await doRequest({
 221       uri: shareUrl,
 222       json: true,
 223       activityPub: true
 224     })
 225     const actorUrl = body.actor
 226     if (!actorUrl) continue
 227
 228     const actor = await getOrCreateActorAndServerAndModel(actorUrl)
 229
 230     const entry = {
 231       actorId: actor.id,
 232       videoId: instance.id
 233     }
 234
 235     await VideoShareModel.findOrCreate({
 236       where: entry,
 237       defaults: entry
 238     })
 239   }
 240 }
 241
 242 export {
 243   getOrCreateAccountAndVideoAndChannel,
 244   fetchRemoteVideoPreview,
 245   fetchRemoteVideoDescription,
 246   generateThumbnailFromUrl,
 247   videoActivityObjectToDBAttributes,
 248   videoFileActivityUrlToDBAttributes,
 249   getOrCreateVideo,
 250   addVideoShares}
 251
 252 // ---------------------------------------------------------------------------
 253
 254 async function fetchRemoteVideo (videoUrl: string): Promise<VideoTorrentObject> {
 255   const options = {
 256     uri: videoUrl,
 257     method: 'GET',
 258     json: true,
 259     activityPub: true
 260   }
 261
 262   logger.info('Fetching remote video %s.', videoUrl)
 263
 264   const { body } = await doRequest(options)
 265
 266   if (isVideoTorrentObjectValid(body) === false) {
 267     logger.debug('Remote video JSON is not valid.', { body })
 268     return undefined
 269   }
 270
 271   return body
 272 }