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                                                   cc: string[] = []) {
  61   let privacy = VideoPrivacy.PRIVATE
  62   if (to.indexOf(ACTIVITY_PUB.PUBLIC) !== -1) privacy = VideoPrivacy.PUBLIC
  63   else if (cc.indexOf(ACTIVITY_PUB.PUBLIC) !== -1) privacy = VideoPrivacy.UNLISTED
  64
  65   const duration = videoObject.duration.replace(/[^\d]+/, '')
  66   let language = null
  67   if (videoObject.language) {
  68     language = parseInt(videoObject.language.identifier, 10)
  69   }
  70
  71   let category = null
  72   if (videoObject.category) {
  73     category = parseInt(videoObject.category.identifier, 10)
  74   }
  75
  76   let licence = null
  77   if (videoObject.licence) {
  78     licence = parseInt(videoObject.licence.identifier, 10)
  79   }
  80
  81   let description = null
  82   if (videoObject.content) {
  83     description = videoObject.content
  84   }
  85
  86   let support = null
  87   if (videoObject.support) {
  88     support = videoObject.support
  89   }
  90
  91   return {
  92     name: videoObject.name,
  93     uuid: videoObject.uuid,
  94     url: videoObject.id,
  95     category,
  96     licence,
  97     language,
  98     description,
  99     support,
 100     nsfw: videoObject.sensitive,
 101     commentsEnabled: videoObject.commentsEnabled,
 102     channelId: videoChannel.id,
 103     duration: parseInt(duration, 10),
 104     createdAt: new Date(videoObject.published),
 105     // FIXME: updatedAt does not seems to be considered by Sequelize
 106     updatedAt: new Date(videoObject.updated),
 107     views: videoObject.views,
 108     likes: 0,
 109     dislikes: 0,
 110     remote: true,
 111     privacy
 112   }
 113 }
 114
 115 function videoFileActivityUrlToDBAttributes (videoCreated: VideoModel, videoObject: VideoTorrentObject) {
 116   const mimeTypes = Object.keys(VIDEO_MIMETYPE_EXT)
 117   const fileUrls = videoObject.url.filter(u => {
 118     return mimeTypes.indexOf(u.mimeType) !== -1 && u.mimeType.startsWith('video/')
 119   })
 120
 121   if (fileUrls.length === 0) {
 122     throw new Error('Cannot find video files for ' + videoCreated.url)
 123   }
 124
 125   const attributes = []
 126   for (const fileUrl of fileUrls) {
 127     // Fetch associated magnet uri
 128     const magnet = videoObject.url.find(u => {
 129       return u.mimeType === 'application/x-bittorrent;x-scheme-handler/magnet' && u.width === fileUrl.width
 130     })
 131
 132     if (!magnet) throw new Error('Cannot find associated magnet uri for file ' + fileUrl.href)
 133
 134     const parsed = magnetUtil.decode(magnet.href)
 135     if (!parsed || isVideoFileInfoHashValid(parsed.infoHash) === false) throw new Error('Cannot parse magnet URI ' + magnet.href)
 136
 137     const attribute = {
 138       extname: VIDEO_MIMETYPE_EXT[ fileUrl.mimeType ],
 139       infoHash: parsed.infoHash,
 140       resolution: fileUrl.width,
 141       size: fileUrl.size,
 142       videoId: videoCreated.id
 143     }
 144     attributes.push(attribute)
 145   }
 146
 147   return attributes
 148 }
 149
 150 async function getOrCreateVideo (videoObject: VideoTorrentObject, channelActor: ActorModel) {
 151   logger.debug('Adding remote video %s.', videoObject.id)
 152
 153   return sequelizeTypescript.transaction(async t => {
 154     const sequelizeOptions = {
 155       transaction: t
 156     }
 157     const videoFromDatabase = await VideoModel.loadByUUIDOrURLAndPopulateAccount(videoObject.uuid, videoObject.id, t)
 158     if (videoFromDatabase) return videoFromDatabase
 159
 160     const videoData = await videoActivityObjectToDBAttributes(channelActor.VideoChannel, videoObject, videoObject.to, videoObject.cc)
 161     const video = VideoModel.build(videoData)
 162
 163     // Don't block on request
 164     generateThumbnailFromUrl(video, videoObject.icon)
 165       .catch(err => logger.warn('Cannot generate thumbnail of %s.', videoObject.id, err))
 166
 167     const videoCreated = await video.save(sequelizeOptions)
 168
 169     const videoFileAttributes = videoFileActivityUrlToDBAttributes(videoCreated, videoObject)
 170     if (videoFileAttributes.length === 0) {
 171       throw new Error('Cannot find valid files for video %s ' + videoObject.url)
 172     }
 173
 174     const tasks = videoFileAttributes.map(f => VideoFileModel.create(f, { transaction: t }))
 175     await Promise.all(tasks)
 176
 177     const tags = videoObject.tag.map(t => t.name)
 178     const tagInstances = await TagModel.findOrCreateTags(tags, t)
 179     await videoCreated.$set('Tags', tagInstances, sequelizeOptions)
 180
 181     logger.info('Remote video with uuid %s inserted.', videoObject.uuid)
 182
 183     videoCreated.VideoChannel = channelActor.VideoChannel
 184     return videoCreated
 185   })
 186 }
 187
 188 async function getOrCreateAccountAndVideoAndChannel (videoObject: VideoTorrentObject | string, actor?: ActorModel) {
 189   if (typeof videoObject === 'string') {
 190     const videoFromDatabase = await VideoModel.loadByUrlAndPopulateAccount(videoObject)
 191     if (videoFromDatabase) {
 192       return {
 193         video: videoFromDatabase,
 194         actor: videoFromDatabase.VideoChannel.Account.Actor,
 195         channelActor: videoFromDatabase.VideoChannel.Actor
 196       }
 197     }
 198
 199     videoObject = await fetchRemoteVideo(videoObject)
 200     if (!videoObject) throw new Error('Cannot fetch remote video')
 201   }
 202
 203   if (!actor) {
 204     const actorObj = videoObject.attributedTo.find(a => a.type === 'Person')
 205     if (!actorObj) throw new Error('Cannot find associated actor to video ' + videoObject.url)
 206
 207     actor = await getOrCreateActorAndServerAndModel(actorObj.id)
 208   }
 209
 210   const channel = videoObject.attributedTo.find(a => a.type === 'Group')
 211   if (!channel) throw new Error('Cannot find associated video channel to video ' + videoObject.url)
 212
 213   const channelActor = await getOrCreateActorAndServerAndModel(channel.id)
 214
 215   const options = {
 216     arguments: [ videoObject, channelActor ],
 217     errorMessage: 'Cannot insert the remote video with many retries.'
 218   }
 219
 220   const video = await retryTransactionWrapper(getOrCreateVideo, options)
 221
 222   // Process outside the transaction because we could fetch remote data
 223   if (videoObject.likes && Array.isArray(videoObject.likes.orderedItems)) {
 224     logger.info('Adding likes of video %s.', video.uuid)
 225     await createRates(videoObject.likes.orderedItems, video, 'like')
 226   }
 227
 228   if (videoObject.dislikes && Array.isArray(videoObject.dislikes.orderedItems)) {
 229     logger.info('Adding dislikes of video %s.', video.uuid)
 230     await createRates(videoObject.dislikes.orderedItems, video, 'dislike')
 231   }
 232
 233   if (videoObject.shares && Array.isArray(videoObject.shares.orderedItems)) {
 234     logger.info('Adding shares of video %s.', video.uuid)
 235     await addVideoShares(video, videoObject.shares.orderedItems)
 236   }
 237
 238   if (videoObject.comments && Array.isArray(videoObject.comments.orderedItems)) {
 239     logger.info('Adding comments of video %s.', video.uuid)
 240     await addVideoComments(video, videoObject.comments.orderedItems)
 241   }
 242
 243   return { actor, channelActor, video }
 244 }
 245
 246 async function createRates (actorUrls: string[], video: VideoModel, rate: VideoRateType) {
 247   let rateCounts = 0
 248   const tasks: Bluebird<number>[] = []
 249
 250   for (const actorUrl of actorUrls) {
 251     const actor = await getOrCreateActorAndServerAndModel(actorUrl)
 252     const p = AccountVideoRateModel
 253       .create({
 254         videoId: video.id,
 255         accountId: actor.Account.id,
 256         type: rate
 257       })
 258       .then(() => rateCounts += 1)
 259
 260     tasks.push(p)
 261   }
 262
 263   await Promise.all(tasks)
 264
 265   logger.info('Adding %d %s to video %s.', rateCounts, rate, video.uuid)
 266
 267   // This is "likes" and "dislikes"
 268   await video.increment(rate + 's', { by: rateCounts })
 269
 270   return
 271 }
 272
 273 async function addVideoShares (instance: VideoModel, shareUrls: string[]) {
 274   for (const shareUrl of shareUrls) {
 275     // Fetch url
 276     const { body } = await doRequest({
 277       uri: shareUrl,
 278       json: true,
 279       activityPub: true
 280     })
 281     const actorUrl = body.actor
 282     if (!actorUrl) continue
 283
 284     const actor = await getOrCreateActorAndServerAndModel(actorUrl)
 285
 286     const entry = {
 287       actorId: actor.id,
 288       videoId: instance.id,
 289       url: shareUrl
 290     }
 291
 292     await VideoShareModel.findOrCreate({
 293       where: {
 294         url: shareUrl
 295       },
 296       defaults: entry
 297     })
 298   }
 299 }
 300
 301 export {
 302   getOrCreateAccountAndVideoAndChannel,
 303   fetchRemoteVideoPreview,
 304   fetchRemoteVideoDescription,
 305   generateThumbnailFromUrl,
 306   videoActivityObjectToDBAttributes,
 307   videoFileActivityUrlToDBAttributes,
 308   getOrCreateVideo,
 309   addVideoShares}
 310
 311 // ---------------------------------------------------------------------------
 312
 313 async function fetchRemoteVideo (videoUrl: string): Promise<VideoTorrentObject> {
 314   const options = {
 315     uri: videoUrl,
 316     method: 'GET',
 317     json: true,
 318     activityPub: true
 319   }
 320
 321   logger.info('Fetching remote video %s.', videoUrl)
 322
 323   const { body } = await doRequest(options)
 324
 325   if (isVideoTorrentObjectValid(body) === false) {
 326     logger.debug('Remote video JSON is not valid.', { body })
 327     return undefined
 328   }
 329
 330   return body
 331 }