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   // FIXME: use url
  24   const host = video.VideoChannel.Account.Actor.Server.host
  25   const path = join(STATIC_PATHS.PREVIEWS, video.getPreviewName())
  26
  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   // FIXME: use url
  34   const host = video.VideoChannel.Account.Actor.Server.host
  35   const path = video.getDescriptionPath()
  36   const options = {
  37     uri: REMOTE_SCHEME.HTTP + '://' + host + path,
  38     json: true
  39   }
  40
  41   const { body } = await doRequest(options)
  42   return body.description ? body.description : ''
  43 }
  44
  45 function generateThumbnailFromUrl (video: VideoModel, icon: ActivityIconObject) {
  46   const thumbnailName = video.getThumbnailName()
  47   const thumbnailPath = join(CONFIG.STORAGE.THUMBNAILS_DIR, thumbnailName)
  48
  49   const options = {
  50     method: 'GET',
  51     uri: icon.url
  52   }
  53   return doRequestAndSaveToFile(options, thumbnailPath)
  54 }
  55
  56 async function videoActivityObjectToDBAttributes (videoChannel: VideoChannelModel,
  57                                                   videoObject: VideoTorrentObject,
  58                                                   to: string[] = [],
  59                                                   cc: string[] = []) {
  60   let privacy = VideoPrivacy.PRIVATE
  61   if (to.indexOf(ACTIVITY_PUB.PUBLIC) !== -1) privacy = VideoPrivacy.PUBLIC
  62   else if (cc.indexOf(ACTIVITY_PUB.PUBLIC) !== -1) privacy = VideoPrivacy.UNLISTED
  63
  64   const duration = videoObject.duration.replace(/[^\d]+/, '')
  65   let language = null
  66   if (videoObject.language) {
  67     language = parseInt(videoObject.language.identifier, 10)
  68   }
  69
  70   let category = null
  71   if (videoObject.category) {
  72     category = parseInt(videoObject.category.identifier, 10)
  73   }
  74
  75   let licence = null
  76   if (videoObject.licence) {
  77     licence = parseInt(videoObject.licence.identifier, 10)
  78   }
  79
  80   let description = null
  81   if (videoObject.content) {
  82     description = videoObject.content
  83   }
  84
  85   return {
  86     name: videoObject.name,
  87     uuid: videoObject.uuid,
  88     url: videoObject.id,
  89     category,
  90     licence,
  91     language,
  92     description,
  93     nsfw: videoObject.nsfw,
  94     commentsEnabled: videoObject.commentsEnabled,
  95     channelId: videoChannel.id,
  96     duration: parseInt(duration, 10),
  97     createdAt: new Date(videoObject.published),
  98     // FIXME: updatedAt does not seems to be considered by Sequelize
  99     updatedAt: new Date(videoObject.updated),
 100     views: videoObject.views,
 101     likes: 0,
 102     dislikes: 0,
 103     remote: true,
 104     privacy
 105   }
 106 }
 107
 108 function videoFileActivityUrlToDBAttributes (videoCreated: VideoModel, videoObject: VideoTorrentObject) {
 109   const mimeTypes = Object.keys(VIDEO_MIMETYPE_EXT)
 110   const fileUrls = videoObject.url.filter(u => {
 111     return mimeTypes.indexOf(u.mimeType) !== -1 && u.mimeType.startsWith('video/')
 112   })
 113
 114   if (fileUrls.length === 0) {
 115     throw new Error('Cannot find video files for ' + videoCreated.url)
 116   }
 117
 118   const attributes = []
 119   for (const fileUrl of fileUrls) {
 120     // Fetch associated magnet uri
 121     const magnet = videoObject.url.find(u => {
 122       return u.mimeType === 'application/x-bittorrent;x-scheme-handler/magnet' && u.width === fileUrl.width
 123     })
 124
 125     if (!magnet) throw new Error('Cannot find associated magnet uri for file ' + fileUrl.href)
 126
 127     const parsed = magnetUtil.decode(magnet.href)
 128     if (!parsed || isVideoFileInfoHashValid(parsed.infoHash) === false) throw new Error('Cannot parse magnet URI ' + magnet.href)
 129
 130     const attribute = {
 131       extname: VIDEO_MIMETYPE_EXT[ fileUrl.mimeType ],
 132       infoHash: parsed.infoHash,
 133       resolution: fileUrl.width,
 134       size: fileUrl.size,
 135       videoId: videoCreated.id
 136     }
 137     attributes.push(attribute)
 138   }
 139
 140   return attributes
 141 }
 142
 143 async function getOrCreateVideo (videoObject: VideoTorrentObject, channelActor: ActorModel) {
 144   logger.debug('Adding remote video %s.', videoObject.id)
 145
 146   return sequelizeTypescript.transaction(async t => {
 147     const sequelizeOptions = {
 148       transaction: t
 149     }
 150     const videoFromDatabase = await VideoModel.loadByUUIDOrURLAndPopulateAccount(videoObject.uuid, videoObject.id, t)
 151     if (videoFromDatabase) return videoFromDatabase
 152
 153     const videoData = await videoActivityObjectToDBAttributes(channelActor.VideoChannel, videoObject, videoObject.to, videoObject.cc)
 154     const video = VideoModel.build(videoData)
 155
 156     // Don't block on request
 157     generateThumbnailFromUrl(video, videoObject.icon)
 158       .catch(err => logger.warn('Cannot generate thumbnail of %s.', videoObject.id, err))
 159
 160     const videoCreated = await video.save(sequelizeOptions)
 161
 162     const videoFileAttributes = videoFileActivityUrlToDBAttributes(videoCreated, videoObject)
 163     if (videoFileAttributes.length === 0) {
 164       throw new Error('Cannot find valid files for video %s ' + videoObject.url)
 165     }
 166
 167     const tasks: Bluebird<any>[] = videoFileAttributes.map(f => VideoFileModel.create(f, { transaction: t }))
 168     await Promise.all(tasks)
 169
 170     const tags = videoObject.tag.map(t => t.name)
 171     const tagInstances = await TagModel.findOrCreateTags(tags, t)
 172     await videoCreated.$set('Tags', tagInstances, sequelizeOptions)
 173
 174     logger.info('Remote video with uuid %s inserted.', videoObject.uuid)
 175
 176     videoCreated.VideoChannel = channelActor.VideoChannel
 177     return videoCreated
 178   })
 179 }
 180
 181 async function getOrCreateAccountAndVideoAndChannel (videoObject: VideoTorrentObject | string, actor?: ActorModel) {
 182   if (typeof videoObject === 'string') {
 183     const videoFromDatabase = await VideoModel.loadByUrlAndPopulateAccount(videoObject)
 184     if (videoFromDatabase) {
 185       return {
 186         video: videoFromDatabase,
 187         actor: videoFromDatabase.VideoChannel.Account.Actor,
 188         channelActor: videoFromDatabase.VideoChannel.Actor
 189       }
 190     }
 191
 192     videoObject = await fetchRemoteVideo(videoObject)
 193     if (!videoObject) throw new Error('Cannot fetch remote video')
 194   }
 195
 196   if (!actor) {
 197     const actorObj = videoObject.attributedTo.find(a => a.type === 'Person')
 198     if (!actorObj) throw new Error('Cannot find associated actor to video ' + videoObject.url)
 199
 200     actor = await getOrCreateActorAndServerAndModel(actorObj.id)
 201   }
 202
 203   const channel = videoObject.attributedTo.find(a => a.type === 'Group')
 204   if (!channel) throw new Error('Cannot find associated video channel to video ' + videoObject.url)
 205
 206   const channelActor = await getOrCreateActorAndServerAndModel(channel.id)
 207
 208   const options = {
 209     arguments: [ videoObject, channelActor ],
 210     errorMessage: 'Cannot insert the remote video with many retries.'
 211   }
 212
 213   const video = await retryTransactionWrapper(getOrCreateVideo, options)
 214
 215   return { actor, channelActor, video }
 216 }
 217
 218 async function addVideoShares (instance: VideoModel, shareUrls: string[]) {
 219   for (const shareUrl of shareUrls) {
 220     // Fetch url
 221     const { body } = await doRequest({
 222       uri: shareUrl,
 223       json: true,
 224       activityPub: true
 225     })
 226     const actorUrl = body.actor
 227     if (!actorUrl) continue
 228
 229     const actor = await getOrCreateActorAndServerAndModel(actorUrl)
 230
 231     const entry = {
 232       actorId: actor.id,
 233       videoId: instance.id
 234     }
 235
 236     await VideoShareModel.findOrCreate({
 237       where: entry,
 238       defaults: entry
 239     })
 240   }
 241 }
 242
 243 export {
 244   getOrCreateAccountAndVideoAndChannel,
 245   fetchRemoteVideoPreview,
 246   fetchRemoteVideoDescription,
 247   generateThumbnailFromUrl,
 248   videoActivityObjectToDBAttributes,
 249   videoFileActivityUrlToDBAttributes,
 250   getOrCreateVideo,
 251   addVideoShares}
 252
 253 // ---------------------------------------------------------------------------
 254
 255 async function fetchRemoteVideo (videoUrl: string): Promise<VideoTorrentObject> {
 256   const options = {
 257     uri: videoUrl,
 258     method: 'GET',
 259     json: true,
 260     activityPub: true
 261   }
 262
 263   logger.info('Fetching remote video %s.', videoUrl)
 264
 265   const { body } = await doRequest(options)
 266
 267   if (isVideoTorrentObjectValid(body) === false) {
 268     logger.debug('Remote video JSON is not valid.', { body })
 269     return undefined
 270   }
 271
 272   return body
 273 }