server/helpers/utils.ts

   1 import { Model } from 'sequelize-typescript'
   2 import * as ipaddr from 'ipaddr.js'
   3 import { ResultList } from '../../shared'
   4 import { VideoResolution } from '../../shared/models/videos'
   5 import { CONFIG } from '../initializers'
   6 import { UserModel } from '../models/account/user'
   7 import { ActorModel } from '../models/activitypub/actor'
   8 import { ApplicationModel } from '../models/application/application'
   9 import { pseudoRandomBytesPromise, sha256, unlinkPromise } from './core-utils'
  10 import { logger } from './logger'
  11 import { isArray } from './custom-validators/misc'
  12 import { join } from 'path'
  13 import { Instance as ParseTorrent } from 'parse-torrent'
  14
  15 const isCidr = require('is-cidr')
  16
  17 function cleanUpReqFiles (req: { files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[] }) {
  18   const files = req.files
  19
  20   if (!files) return
  21
  22   if (isArray(files)) {
  23     (files as Express.Multer.File[]).forEach(f => deleteFileAsync(f.path))
  24     return
  25   }
  26
  27   for (const key of Object.keys(files)) {
  28     const file = files[key]
  29
  30     if (isArray(file)) file.forEach(f => deleteFileAsync(f.path))
  31     else deleteFileAsync(file.path)
  32   }
  33 }
  34
  35 function deleteFileAsync (path: string) {
  36   unlinkPromise(path)
  37     .catch(err => logger.error('Cannot delete the file %s asynchronously.', path, { err }))
  38 }
  39
  40 async function generateRandomString (size: number) {
  41   const raw = await pseudoRandomBytesPromise(size)
  42
  43   return raw.toString('hex')
  44 }
  45
  46 interface FormattableToJSON {
  47   toFormattedJSON (args?: any)
  48 }
  49
  50 function getFormattedObjects<U, T extends FormattableToJSON> (objects: T[], objectsTotal: number, formattedArg?: any) {
  51   const formattedObjects: U[] = []
  52
  53   objects.forEach(object => {
  54     formattedObjects.push(object.toFormattedJSON(formattedArg))
  55   })
  56
  57   return {
  58     total: objectsTotal,
  59     data: formattedObjects
  60   } as ResultList<U>
  61 }
  62
  63 async function isSignupAllowed () {
  64   if (CONFIG.SIGNUP.ENABLED === false) {
  65     return false
  66   }
  67
  68   // No limit and signup is enabled
  69   if (CONFIG.SIGNUP.LIMIT === -1) {
  70     return true
  71   }
  72
  73   const totalUsers = await UserModel.countTotal()
  74
  75   return totalUsers < CONFIG.SIGNUP.LIMIT
  76 }
  77
  78 function isSignupAllowedForCurrentIP (ip: string) {
  79   const addr = ipaddr.parse(ip)
  80   let excludeList = [ 'blacklist' ]
  81   let matched = ''
  82
  83   // if there is a valid, non-empty whitelist, we exclude all unknown adresses too
  84   if (CONFIG.SIGNUP.FILTERS.CIDR.WHITELIST.filter(cidr => isCidr(cidr)).length > 0) {
  85     excludeList.push('unknown')
  86   }
  87
  88   if (addr.kind() === 'ipv4') {
  89     const addrV4 = ipaddr.IPv4.parse(ip)
  90     const rangeList = {
  91       whitelist: CONFIG.SIGNUP.FILTERS.CIDR.WHITELIST.filter(cidr => isCidr.v4(cidr))
  92                                                 .map(cidr => ipaddr.IPv4.parseCIDR(cidr)),
  93       blacklist: CONFIG.SIGNUP.FILTERS.CIDR.BLACKLIST.filter(cidr => isCidr.v4(cidr))
  94                                                 .map(cidr => ipaddr.IPv4.parseCIDR(cidr))
  95     }
  96     matched = ipaddr.subnetMatch(addrV4, rangeList, 'unknown')
  97   } else if (addr.kind() === 'ipv6') {
  98     const addrV6 = ipaddr.IPv6.parse(ip)
  99     const rangeList = {
 100       whitelist: CONFIG.SIGNUP.FILTERS.CIDR.WHITELIST.filter(cidr => isCidr.v6(cidr))
 101                                                 .map(cidr => ipaddr.IPv6.parseCIDR(cidr)),
 102       blacklist: CONFIG.SIGNUP.FILTERS.CIDR.BLACKLIST.filter(cidr => isCidr.v6(cidr))
 103                                                 .map(cidr => ipaddr.IPv6.parseCIDR(cidr))
 104     }
 105     matched = ipaddr.subnetMatch(addrV6, rangeList, 'unknown')
 106   }
 107
 108   return !excludeList.includes(matched)
 109 }
 110
 111 function computeResolutionsToTranscode (videoFileHeight: number) {
 112   const resolutionsEnabled: number[] = []
 113   const configResolutions = CONFIG.TRANSCODING.RESOLUTIONS
 114
 115   // Put in the order we want to proceed jobs
 116   const resolutions = [
 117     VideoResolution.H_480P,
 118     VideoResolution.H_360P,
 119     VideoResolution.H_720P,
 120     VideoResolution.H_240P,
 121     VideoResolution.H_1080P
 122   ]
 123
 124   for (const resolution of resolutions) {
 125     if (configResolutions[ resolution + 'p' ] === true && videoFileHeight > resolution) {
 126       resolutionsEnabled.push(resolution)
 127     }
 128   }
 129
 130   return resolutionsEnabled
 131 }
 132
 133 const timeTable = {
 134   ms:           1,
 135   second:       1000,
 136   minute:       60000,
 137   hour:         3600000,
 138   day:          3600000 * 24,
 139   week:         3600000 * 24 * 7,
 140   month:        3600000 * 24 * 30
 141 }
 142 export function parseDuration (duration: number | string): number {
 143   if (typeof duration === 'number') return duration
 144
 145   if (typeof duration === 'string') {
 146     const split = duration.match(/^([\d\.,]+)\s?(\w+)$/)
 147
 148     if (split.length === 3) {
 149       const len = parseFloat(split[1])
 150       let unit = split[2].replace(/s$/i,'').toLowerCase()
 151       if (unit === 'm') {
 152         unit = 'ms'
 153       }
 154
 155       return (len || 1) * (timeTable[unit] || 0)
 156     }
 157   }
 158
 159   throw new Error('Duration could not be properly parsed')
 160 }
 161
 162 function resetSequelizeInstance (instance: Model<any>, savedFields: object) {
 163   Object.keys(savedFields).forEach(key => {
 164     const value = savedFields[key]
 165     instance.set(key, value)
 166   })
 167 }
 168
 169 let serverActor: ActorModel
 170 async function getServerActor () {
 171   if (serverActor === undefined) {
 172     const application = await ApplicationModel.load()
 173     if (!application) throw Error('Could not load Application from database.')
 174
 175     serverActor = application.Account.Actor
 176   }
 177
 178   if (!serverActor) {
 179     logger.error('Cannot load server actor.')
 180     process.exit(0)
 181   }
 182
 183   return Promise.resolve(serverActor)
 184 }
 185
 186 function generateVideoTmpPath (target: string | ParseTorrent) {
 187   const id = typeof target === 'string' ? target : target.infoHash
 188
 189   const hash = sha256(id)
 190   return join(CONFIG.STORAGE.VIDEOS_DIR, hash + '-import.mp4')
 191 }
 192
 193 function getSecureTorrentName (originalName: string) {
 194   return sha256(originalName) + '.torrent'
 195 }
 196
 197 type SortType = { sortModel: any, sortValue: string }
 198
 199 // ---------------------------------------------------------------------------
 200
 201 export {
 202   cleanUpReqFiles,
 203   deleteFileAsync,
 204   generateRandomString,
 205   getFormattedObjects,
 206   isSignupAllowed,
 207   getSecureTorrentName,
 208   isSignupAllowedForCurrentIP,
 209   computeResolutionsToTranscode,
 210   resetSequelizeInstance,
 211   getServerActor,
 212   SortType,
 213   generateVideoTmpPath
 214 }