server/lib/activitypub/videos.ts

   1 import * as Bluebird from 'bluebird'
   2 import * as sequelize from 'sequelize'
   3 import * as magnetUtil from 'magnet-uri'
   4 import { join } from 'path'
   5 import * as request from 'request'
   6 import { ActivityIconObject, VideoState } from '../../../shared/index'
   7 import { VideoTorrentObject } from '../../../shared/models/activitypub/objects'
   8 import { VideoPrivacy, VideoRateType } from '../../../shared/models/videos'
   9 import { sanitizeAndCheckVideoTorrentObject } from '../../helpers/custom-validators/activitypub/videos'
  10 import { isVideoFileInfoHashValid } from '../../helpers/custom-validators/videos'
  11 import { retryTransactionWrapper } from '../../helpers/database-utils'
  12 import { logger } from '../../helpers/logger'
  13 import { doRequest, doRequestAndSaveToFile } from '../../helpers/requests'
  14 import { ACTIVITY_PUB, CONFIG, REMOTE_SCHEME, sequelizeTypescript, VIDEO_MIMETYPE_EXT } from '../../initializers'
  15 import { AccountVideoRateModel } from '../../models/account/account-video-rate'
  16 import { ActorModel } from '../../models/activitypub/actor'
  17 import { TagModel } from '../../models/video/tag'
  18 import { VideoModel } from '../../models/video/video'
  19 import { VideoChannelModel } from '../../models/video/video-channel'
  20 import { VideoFileModel } from '../../models/video/video-file'
  21 import { VideoShareModel } from '../../models/video/video-share'
  22 import { getOrCreateActorAndServerAndModel } from './actor'
  23 import { addVideoComments } from './video-comments'
  24 import { crawlCollectionPage } from './crawl'
  25 import { sendCreateVideo, sendUpdateVideo } from './send'
  26 import { shareVideoByServerAndChannel } from './index'
  27 import { isArray } from '../../helpers/custom-validators/misc'
  28 import { VideoCaptionModel } from '../../models/video/video-caption'
  29
  30 async function federateVideoIfNeeded (video: VideoModel, isNewVideo: boolean, transaction?: sequelize.Transaction) {
  31   // If the video is not private and published, we federate it
  32   if (video.privacy !== VideoPrivacy.PRIVATE && video.state === VideoState.PUBLISHED) {
  33     // Fetch more attributes that we will need to serialize in AP object
  34     if (isArray(video.VideoCaptions) === false) {
  35       video.VideoCaptions = await video.$get('VideoCaptions', {
  36         attributes: [ 'language' ],
  37         transaction
  38       }) as VideoCaptionModel[]
  39     }
  40
  41     if (isNewVideo) {
  42       // Now we'll add the video's meta data to our followers
  43       await sendCreateVideo(video, transaction)
  44       await shareVideoByServerAndChannel(video, transaction)
  45     } else {
  46       await sendUpdateVideo(video, transaction)
  47     }
  48   }
  49 }
  50
  51 function fetchRemoteVideoStaticFile (video: VideoModel, path: string, reject: Function) {
  52   const host = video.VideoChannel.Account.Actor.Server.host
  53
  54   // We need to provide a callback, if no we could have an uncaught exception
  55   return request.get(REMOTE_SCHEME.HTTP + '://' + host + path, err => {
  56     if (err) reject(err)
  57   })
  58 }
  59
  60 async function fetchRemoteVideoDescription (video: VideoModel) {
  61   const host = video.VideoChannel.Account.Actor.Server.host
  62   const path = video.getDescriptionPath()
  63   const options = {
  64     uri: REMOTE_SCHEME.HTTP + '://' + host + path,
  65     json: true
  66   }
  67
  68   const { body } = await doRequest(options)
  69   return body.description ? body.description : ''
  70 }
  71
  72 function generateThumbnailFromUrl (video: VideoModel, icon: ActivityIconObject) {
  73   const thumbnailName = video.getThumbnailName()
  74   const thumbnailPath = join(CONFIG.STORAGE.THUMBNAILS_DIR, thumbnailName)
  75
  76   const options = {
  77     method: 'GET',
  78     uri: icon.url
  79   }
  80   return doRequestAndSaveToFile(options, thumbnailPath)
  81 }
  82
  83 async function videoActivityObjectToDBAttributes (
  84   videoChannel: VideoChannelModel,
  85   videoObject: VideoTorrentObject,
  86   to: string[] = []
  87 ) {
  88   const privacy = to.indexOf(ACTIVITY_PUB.PUBLIC) !== -1 ? VideoPrivacy.PUBLIC : VideoPrivacy.UNLISTED
  89   const duration = videoObject.duration.replace(/[^\d]+/, '')
  90
  91   let language: string | undefined
  92   if (videoObject.language) {
  93     language = videoObject.language.identifier
  94   }
  95
  96   let category: number | undefined
  97   if (videoObject.category) {
  98     category = parseInt(videoObject.category.identifier, 10)
  99   }
 100
 101   let licence: number | undefined
 102   if (videoObject.licence) {
 103     licence = parseInt(videoObject.licence.identifier, 10)
 104   }
 105
 106   const description = videoObject.content || null
 107   const support = videoObject.support || null
 108
 109   return {
 110     name: videoObject.name,
 111     uuid: videoObject.uuid,
 112     url: videoObject.id,
 113     category,
 114     licence,
 115     language,
 116     description,
 117     support,
 118     nsfw: videoObject.sensitive,
 119     commentsEnabled: videoObject.commentsEnabled,
 120     waitTranscoding: videoObject.waitTranscoding,
 121     state: videoObject.state,
 122     channelId: videoChannel.id,
 123     duration: parseInt(duration, 10),
 124     createdAt: new Date(videoObject.published),
 125     publishedAt: new Date(videoObject.published),
 126     // FIXME: updatedAt does not seems to be considered by Sequelize
 127     updatedAt: new Date(videoObject.updated),
 128     views: videoObject.views,
 129     likes: 0,
 130     dislikes: 0,
 131     remote: true,
 132     privacy
 133   }
 134 }
 135
 136 function videoFileActivityUrlToDBAttributes (videoCreated: VideoModel, videoObject: VideoTorrentObject) {
 137   const mimeTypes = Object.keys(VIDEO_MIMETYPE_EXT)
 138   const fileUrls = videoObject.url.filter(u => {
 139     return mimeTypes.indexOf(u.mimeType) !== -1 && u.mimeType.startsWith('video/')
 140   })
 141
 142   if (fileUrls.length === 0) {
 143     throw new Error('Cannot find video files for ' + videoCreated.url)
 144   }
 145
 146   const attributes: VideoFileModel[] = []
 147   for (const fileUrl of fileUrls) {
 148     // Fetch associated magnet uri
 149     const magnet = videoObject.url.find(u => {
 150       return u.mimeType === 'application/x-bittorrent;x-scheme-handler/magnet' && u.height === fileUrl.height
 151     })
 152
 153     if (!magnet) throw new Error('Cannot find associated magnet uri for file ' + fileUrl.href)
 154
 155     const parsed = magnetUtil.decode(magnet.href)
 156     if (!parsed || isVideoFileInfoHashValid(parsed.infoHash) === false) {
 157       throw new Error('Cannot parse magnet URI ' + magnet.href)
 158     }
 159
 160     const attribute = {
 161       extname: VIDEO_MIMETYPE_EXT[ fileUrl.mimeType ],
 162       infoHash: parsed.infoHash,
 163       resolution: fileUrl.height,
 164       size: fileUrl.size,
 165       videoId: videoCreated.id,
 166       fps: fileUrl.fps
 167     } as VideoFileModel
 168     attributes.push(attribute)
 169   }
 170
 171   return attributes
 172 }
 173
 174 function getOrCreateVideoChannel (videoObject: VideoTorrentObject) {
 175   const channel = videoObject.attributedTo.find(a => a.type === 'Group')
 176   if (!channel) throw new Error('Cannot find associated video channel to video ' + videoObject.url)
 177
 178   return getOrCreateActorAndServerAndModel(channel.id)
 179 }
 180
 181 async function getOrCreateVideo (videoObject: VideoTorrentObject, channelActor: ActorModel) {
 182   logger.debug('Adding remote video %s.', videoObject.id)
 183
 184   return sequelizeTypescript.transaction(async t => {
 185     const sequelizeOptions = {
 186       transaction: t
 187     }
 188     const videoFromDatabase = await VideoModel.loadByUUIDOrURLAndPopulateAccount(videoObject.uuid, videoObject.id, t)
 189     if (videoFromDatabase) return videoFromDatabase
 190
 191     const videoData = await videoActivityObjectToDBAttributes(channelActor.VideoChannel, videoObject, videoObject.to)
 192     const video = VideoModel.build(videoData)
 193
 194     // Don't block on remote HTTP request (we are in a transaction!)
 195     generateThumbnailFromUrl(video, videoObject.icon)
 196       .catch(err => logger.warn('Cannot generate thumbnail of %s.', videoObject.id, { err }))
 197
 198     const videoCreated = await video.save(sequelizeOptions)
 199
 200     // Process files
 201     const videoFileAttributes = videoFileActivityUrlToDBAttributes(videoCreated, videoObject)
 202     if (videoFileAttributes.length === 0) {
 203       throw new Error('Cannot find valid files for video %s ' + videoObject.url)
 204     }
 205
 206     const videoFilePromises = videoFileAttributes.map(f => VideoFileModel.create(f, { transaction: t }))
 207     await Promise.all(videoFilePromises)
 208
 209     // Process tags
 210     const tags = videoObject.tag.map(t => t.name)
 211     const tagInstances = await TagModel.findOrCreateTags(tags, t)
 212     await videoCreated.$set('Tags', tagInstances, sequelizeOptions)
 213
 214     // Process captions
 215     const videoCaptionsPromises = videoObject.subtitleLanguage.map(c => {
 216       return VideoCaptionModel.insertOrReplaceLanguage(videoCreated.id, c.identifier, t)
 217     })
 218     await Promise.all(videoCaptionsPromises)
 219
 220     logger.info('Remote video with uuid %s inserted.', videoObject.uuid)
 221
 222     videoCreated.VideoChannel = channelActor.VideoChannel
 223     return videoCreated
 224   })
 225 }
 226
 227 async function getOrCreateAccountAndVideoAndChannel (videoObject: VideoTorrentObject | string, actor?: ActorModel) {
 228   const videoUrl = typeof videoObject === 'string' ? videoObject : videoObject.id
 229
 230   const videoFromDatabase = await VideoModel.loadByUrlAndPopulateAccount(videoUrl)
 231   if (videoFromDatabase) {
 232     return {
 233       video: videoFromDatabase,
 234       actor: videoFromDatabase.VideoChannel.Account.Actor,
 235       channelActor: videoFromDatabase.VideoChannel.Actor
 236     }
 237   }
 238
 239   videoObject = await fetchRemoteVideo(videoUrl)
 240   if (!videoObject) throw new Error('Cannot fetch remote video with url: ' + videoUrl)
 241
 242   if (!actor) {
 243     const actorObj = videoObject.attributedTo.find(a => a.type === 'Person')
 244     if (!actorObj) throw new Error('Cannot find associated actor to video ' + videoObject.url)
 245
 246     actor = await getOrCreateActorAndServerAndModel(actorObj.id)
 247   }
 248
 249   const channelActor = await getOrCreateVideoChannel(videoObject)
 250
 251   const video = await retryTransactionWrapper(getOrCreateVideo, videoObject, channelActor)
 252
 253   // Process outside the transaction because we could fetch remote data
 254   logger.info('Adding likes of video %s.', video.uuid)
 255   await crawlCollectionPage<string>(videoObject.likes, (items) => createRates(items, video, 'like'))
 256
 257   logger.info('Adding dislikes of video %s.', video.uuid)
 258   await crawlCollectionPage<string>(videoObject.dislikes, (items) => createRates(items, video, 'dislike'))
 259
 260   logger.info('Adding shares of video %s.', video.uuid)
 261   await crawlCollectionPage<string>(videoObject.shares, (items) => addVideoShares(items, video))
 262
 263   logger.info('Adding comments of video %s.', video.uuid)
 264   await crawlCollectionPage<string>(videoObject.comments, (items) => addVideoComments(items, video))
 265
 266   return { actor, channelActor, video }
 267 }
 268
 269 async function createRates (actorUrls: string[], video: VideoModel, rate: VideoRateType) {
 270   let rateCounts = 0
 271   const tasks: Bluebird<number>[] = []
 272
 273   for (const actorUrl of actorUrls) {
 274     const actor = await getOrCreateActorAndServerAndModel(actorUrl)
 275     const p = AccountVideoRateModel
 276       .create({
 277         videoId: video.id,
 278         accountId: actor.Account.id,
 279         type: rate
 280       })
 281       .then(() => rateCounts += 1)
 282
 283     tasks.push(p)
 284   }
 285
 286   await Promise.all(tasks)
 287
 288   logger.info('Adding %d %s to video %s.', rateCounts, rate, video.uuid)
 289
 290   // This is "likes" and "dislikes"
 291   if (rateCounts !== 0) await video.increment(rate + 's', { by: rateCounts })
 292
 293   return
 294 }
 295
 296 async function addVideoShares (shareUrls: string[], instance: VideoModel) {
 297   for (const shareUrl of shareUrls) {
 298     // Fetch url
 299     const { body } = await doRequest({
 300       uri: shareUrl,
 301       json: true,
 302       activityPub: true
 303     })
 304     if (!body || !body.actor) {
 305       logger.warn('Cannot add remote share with url: %s, skipping...', shareUrl)
 306       continue
 307     }
 308
 309     const actorUrl = body.actor
 310     const actor = await getOrCreateActorAndServerAndModel(actorUrl)
 311
 312     const entry = {
 313       actorId: actor.id,
 314       videoId: instance.id,
 315       url: shareUrl
 316     }
 317
 318     await VideoShareModel.findOrCreate({
 319       where: {
 320         url: shareUrl
 321       },
 322       defaults: entry
 323     })
 324   }
 325 }
 326
 327 async function fetchRemoteVideo (videoUrl: string): Promise<VideoTorrentObject> {
 328   const options = {
 329     uri: videoUrl,
 330     method: 'GET',
 331     json: true,
 332     activityPub: true
 333   }
 334
 335   logger.info('Fetching remote video %s.', videoUrl)
 336
 337   const { body } = await doRequest(options)
 338
 339   if (sanitizeAndCheckVideoTorrentObject(body) === false) {
 340     logger.debug('Remote video JSON is not valid.', { body })
 341     return undefined
 342   }
 343
 344   return body
 345 }
 346
 347 export {
 348   federateVideoIfNeeded,
 349   fetchRemoteVideo,
 350   getOrCreateAccountAndVideoAndChannel,
 351   fetchRemoteVideoStaticFile,
 352   fetchRemoteVideoDescription,
 353   generateThumbnailFromUrl,
 354   videoActivityObjectToDBAttributes,
 355   videoFileActivityUrlToDBAttributes,
 356   getOrCreateVideo,
 357   getOrCreateVideoChannel,
 358   addVideoShares
 359 }