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, VideoRateType } 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 { AccountVideoRateModel } from '../../models/account/account-video-rate'
  15 import { ActorModel } from '../../models/activitypub/actor'
  16 import { TagModel } from '../../models/video/tag'
  17 import { VideoModel } from '../../models/video/video'
  18 import { VideoChannelModel } from '../../models/video/video-channel'
  19 import { VideoFileModel } from '../../models/video/video-file'
  20 import { VideoShareModel } from '../../models/video/video-share'
  21 import { getOrCreateActorAndServerAndModel } from './actor'
  22 import { addVideoComments } from './video-comments'
  23
  24 function fetchRemoteVideoPreview (video: VideoModel, reject: Function) {
  25   const host = video.VideoChannel.Account.Actor.Server.host
  26   const path = join(STATIC_PATHS.PREVIEWS, video.getPreviewName())
  27
  28   // We need to provide a callback, if no we could have an uncaught exception
  29   return request.get(REMOTE_SCHEME.HTTP + '://' + host + path, err => {
  30     if (err) reject(err)
  31   })
  32 }
  33
  34 async function fetchRemoteVideoDescription (video: VideoModel) {
  35   const host = video.VideoChannel.Account.Actor.Server.host
  36   const path = video.getDescriptionPath()
  37   const options = {
  38     uri: REMOTE_SCHEME.HTTP + '://' + host + path,
  39     json: true
  40   }
  41
  42   const { body } = await doRequest(options)
  43   return body.description ? body.description : ''
  44 }
  45
  46 function generateThumbnailFromUrl (video: VideoModel, icon: ActivityIconObject) {
  47   const thumbnailName = video.getThumbnailName()
  48   const thumbnailPath = join(CONFIG.STORAGE.THUMBNAILS_DIR, thumbnailName)
  49
  50   const options = {
  51     method: 'GET',
  52     uri: icon.url
  53   }
  54   return doRequestAndSaveToFile(options, thumbnailPath)
  55 }
  56
  57 async function videoActivityObjectToDBAttributes (videoChannel: VideoChannelModel,
  58                                                   videoObject: VideoTorrentObject,
  59                                                   to: string[] = []) {
  60   const privacy = to.indexOf(ACTIVITY_PUB.PUBLIC) !== -1 ? VideoPrivacy.PUBLIC : VideoPrivacy.UNLISTED
  61
  62   const duration = videoObject.duration.replace(/[^\d]+/, '')
  63   let language = null
  64   if (videoObject.language) {
  65     language = parseInt(videoObject.language.identifier, 10)
  66   }
  67
  68   let category = null
  69   if (videoObject.category) {
  70     category = parseInt(videoObject.category.identifier, 10)
  71   }
  72
  73   let licence = null
  74   if (videoObject.licence) {
  75     licence = parseInt(videoObject.licence.identifier, 10)
  76   }
  77
  78   const description = videoObject.content || null
  79   const support = videoObject.support || null
  80
  81   return {
  82     name: videoObject.name,
  83     uuid: videoObject.uuid,
  84     url: videoObject.id,
  85     category,
  86     licence,
  87     language,
  88     description,
  89     support,
  90     nsfw: videoObject.sensitive,
  91     commentsEnabled: videoObject.commentsEnabled,
  92     channelId: videoChannel.id,
  93     duration: parseInt(duration, 10),
  94     createdAt: new Date(videoObject.published),
  95     // FIXME: updatedAt does not seems to be considered by Sequelize
  96     updatedAt: new Date(videoObject.updated),
  97     views: videoObject.views,
  98     likes: 0,
  99     dislikes: 0,
 100     remote: true,
 101     privacy
 102   }
 103 }
 104
 105 function videoFileActivityUrlToDBAttributes (videoCreated: VideoModel, videoObject: VideoTorrentObject) {
 106   const mimeTypes = Object.keys(VIDEO_MIMETYPE_EXT)
 107   const fileUrls = videoObject.url.filter(u => {
 108     return mimeTypes.indexOf(u.mimeType) !== -1 && u.mimeType.startsWith('video/')
 109   })
 110
 111   if (fileUrls.length === 0) {
 112     throw new Error('Cannot find video files for ' + videoCreated.url)
 113   }
 114
 115   const attributes = []
 116   for (const fileUrl of fileUrls) {
 117     // Fetch associated magnet uri
 118     const magnet = videoObject.url.find(u => {
 119       return u.mimeType === 'application/x-bittorrent;x-scheme-handler/magnet' && u.width === fileUrl.width
 120     })
 121
 122     if (!magnet) throw new Error('Cannot find associated magnet uri for file ' + fileUrl.href)
 123
 124     const parsed = magnetUtil.decode(magnet.href)
 125     if (!parsed || isVideoFileInfoHashValid(parsed.infoHash) === false) throw new Error('Cannot parse magnet URI ' + magnet.href)
 126
 127     const attribute = {
 128       extname: VIDEO_MIMETYPE_EXT[ fileUrl.mimeType ],
 129       infoHash: parsed.infoHash,
 130       resolution: fileUrl.width,
 131       size: fileUrl.size,
 132       videoId: videoCreated.id
 133     }
 134     attributes.push(attribute)
 135   }
 136
 137   return attributes
 138 }
 139
 140 async function getOrCreateVideo (videoObject: VideoTorrentObject, channelActor: ActorModel) {
 141   logger.debug('Adding remote video %s.', videoObject.id)
 142
 143   return sequelizeTypescript.transaction(async t => {
 144     const sequelizeOptions = {
 145       transaction: t
 146     }
 147     const videoFromDatabase = await VideoModel.loadByUUIDOrURLAndPopulateAccount(videoObject.uuid, videoObject.id, t)
 148     if (videoFromDatabase) return videoFromDatabase
 149
 150     const videoData = await videoActivityObjectToDBAttributes(channelActor.VideoChannel, videoObject, videoObject.to)
 151     const video = VideoModel.build(videoData)
 152
 153     // Don't block on request
 154     generateThumbnailFromUrl(video, videoObject.icon)
 155       .catch(err => logger.warn('Cannot generate thumbnail of %s.', videoObject.id, err))
 156
 157     const videoCreated = await video.save(sequelizeOptions)
 158
 159     const videoFileAttributes = videoFileActivityUrlToDBAttributes(videoCreated, videoObject)
 160     if (videoFileAttributes.length === 0) {
 161       throw new Error('Cannot find valid files for video %s ' + videoObject.url)
 162     }
 163
 164     const tasks = videoFileAttributes.map(f => VideoFileModel.create(f, { transaction: t }))
 165     await Promise.all(tasks)
 166
 167     const tags = videoObject.tag.map(t => t.name)
 168     const tagInstances = await TagModel.findOrCreateTags(tags, t)
 169     await videoCreated.$set('Tags', tagInstances, sequelizeOptions)
 170
 171     logger.info('Remote video with uuid %s inserted.', videoObject.uuid)
 172
 173     videoCreated.VideoChannel = channelActor.VideoChannel
 174     return videoCreated
 175   })
 176 }
 177
 178 async function getOrCreateAccountAndVideoAndChannel (videoObject: VideoTorrentObject | string, actor?: ActorModel) {
 179   if (typeof videoObject === 'string') {
 180     const videoFromDatabase = await VideoModel.loadByUrlAndPopulateAccount(videoObject)
 181     if (videoFromDatabase) {
 182       return {
 183         video: videoFromDatabase,
 184         actor: videoFromDatabase.VideoChannel.Account.Actor,
 185         channelActor: videoFromDatabase.VideoChannel.Actor
 186       }
 187     }
 188
 189     videoObject = await fetchRemoteVideo(videoObject)
 190     if (!videoObject) throw new Error('Cannot fetch remote video (maybe invalid...)')
 191   }
 192
 193   if (!actor) {
 194     const actorObj = videoObject.attributedTo.find(a => a.type === 'Person')
 195     if (!actorObj) throw new Error('Cannot find associated actor to video ' + videoObject.url)
 196
 197     actor = await getOrCreateActorAndServerAndModel(actorObj.id)
 198   }
 199
 200   const channel = videoObject.attributedTo.find(a => a.type === 'Group')
 201   if (!channel) throw new Error('Cannot find associated video channel to video ' + videoObject.url)
 202
 203   const channelActor = await getOrCreateActorAndServerAndModel(channel.id)
 204
 205   const options = {
 206     arguments: [ videoObject, channelActor ],
 207     errorMessage: 'Cannot insert the remote video with many retries.'
 208   }
 209
 210   const video = await retryTransactionWrapper(getOrCreateVideo, options)
 211
 212   // Process outside the transaction because we could fetch remote data
 213   if (videoObject.likes && Array.isArray(videoObject.likes.orderedItems)) {
 214     logger.info('Adding likes of video %s.', video.uuid)
 215     await createRates(videoObject.likes.orderedItems, video, 'like')
 216   }
 217
 218   if (videoObject.dislikes && Array.isArray(videoObject.dislikes.orderedItems)) {
 219     logger.info('Adding dislikes of video %s.', video.uuid)
 220     await createRates(videoObject.dislikes.orderedItems, video, 'dislike')
 221   }
 222
 223   if (videoObject.shares && Array.isArray(videoObject.shares.orderedItems)) {
 224     logger.info('Adding shares of video %s.', video.uuid)
 225     await addVideoShares(video, videoObject.shares.orderedItems)
 226   }
 227
 228   if (videoObject.comments && Array.isArray(videoObject.comments.orderedItems)) {
 229     logger.info('Adding comments of video %s.', video.uuid)
 230     await addVideoComments(video, videoObject.comments.orderedItems)
 231   }
 232
 233   return { actor, channelActor, video }
 234 }
 235
 236 async function createRates (actorUrls: string[], video: VideoModel, rate: VideoRateType) {
 237   let rateCounts = 0
 238   const tasks: Bluebird<number>[] = []
 239
 240   for (const actorUrl of actorUrls) {
 241     const actor = await getOrCreateActorAndServerAndModel(actorUrl)
 242     const p = AccountVideoRateModel
 243       .create({
 244         videoId: video.id,
 245         accountId: actor.Account.id,
 246         type: rate
 247       })
 248       .then(() => rateCounts += 1)
 249
 250     tasks.push(p)
 251   }
 252
 253   await Promise.all(tasks)
 254
 255   logger.info('Adding %d %s to video %s.', rateCounts, rate, video.uuid)
 256
 257   // This is "likes" and "dislikes"
 258   await video.increment(rate + 's', { by: rateCounts })
 259
 260   return
 261 }
 262
 263 async function addVideoShares (instance: VideoModel, shareUrls: string[]) {
 264   for (const shareUrl of shareUrls) {
 265     // Fetch url
 266     const { body } = await doRequest({
 267       uri: shareUrl,
 268       json: true,
 269       activityPub: true
 270     })
 271     const actorUrl = body.actor
 272     if (!actorUrl) continue
 273
 274     const actor = await getOrCreateActorAndServerAndModel(actorUrl)
 275
 276     const entry = {
 277       actorId: actor.id,
 278       videoId: instance.id,
 279       url: shareUrl
 280     }
 281
 282     await VideoShareModel.findOrCreate({
 283       where: {
 284         url: shareUrl
 285       },
 286       defaults: entry
 287     })
 288   }
 289 }
 290
 291 export {
 292   getOrCreateAccountAndVideoAndChannel,
 293   fetchRemoteVideoPreview,
 294   fetchRemoteVideoDescription,
 295   generateThumbnailFromUrl,
 296   videoActivityObjectToDBAttributes,
 297   videoFileActivityUrlToDBAttributes,
 298   getOrCreateVideo,
 299   addVideoShares}
 300
 301 // ---------------------------------------------------------------------------
 302
 303 async function fetchRemoteVideo (videoUrl: string): Promise<VideoTorrentObject> {
 304   const options = {
 305     uri: videoUrl,
 306     method: 'GET',
 307     json: true,
 308     activityPub: true
 309   }
 310
 311   logger.info('Fetching remote video %s.', videoUrl)
 312
 313   const { body } = await doRequest(options)
 314
 315   if (isVideoTorrentObjectValid(body) === false) {
 316     logger.debug('Remote video JSON is not valid.', { body })
 317     return undefined
 318   }
 319
 320   return body
 321 }