Add tmp and redundancy directories

[github/Chocobozzz/PeerTube.git] / server / helpers / youtube-dl.ts

diff --git a/server/helpers/youtube-dl.ts b/server/helpers/youtube-dl.ts
index 43156bb227172e4c958a6b8679095997a05a811d..b74351b4219a72963c04cfe092c8081a5a7ad63f 100644 (file)
--- a/server/helpers/youtube-dl.ts
+++ b/server/helpers/youtube-dl.ts
@@ -1,56 +1,154 @@
-import * as youtubeDL from 'youtube-dl'
 import { truncate } from 'lodash'
-import { CONFIG, CONSTRAINTS_FIELDS, VIDEO_CATEGORIES } from '../initializers'
-import { join } from 'path'
-import * as crypto from 'crypto'
+import { CONSTRAINTS_FIELDS, VIDEO_CATEGORIES } from '../initializers'
 import { logger } from './logger'
+import { generateVideoImportTmpPath } from './utils'
+import { join } from 'path'
+import { root } from './core-utils'
+import { ensureDir, writeFile, remove } from 'fs-extra'
+import * as request from 'request'
+import { createWriteStream } from 'fs'
 
 export type YoutubeDLInfo = {
-  name: string
-  description: string
-  category: number
-  licence: number
-  nsfw: boolean
-  tags: string[]
-  thumbnailUrl: string
+  name?: string
+  description?: string
+  category?: number
+  licence?: number
+  nsfw?: boolean
+  tags?: string[]
+  thumbnailUrl?: string
 }
 
-function getYoutubeDLInfo (url: string): Promise<YoutubeDLInfo> {
-  return new Promise<YoutubeDLInfo>((res, rej) => {
-    const options = [ '-j', '--flat-playlist' ]
+const processOptions = {
+  maxBuffer: 1024 * 1024 * 10 // 10MB
+}
 
-    youtubeDL.getInfo(url, options, (err, info) => {
+function getYoutubeDLInfo (url: string, opts?: string[]): Promise<YoutubeDLInfo> {
+  return new Promise<YoutubeDLInfo>(async (res, rej) => {
+    const args = opts || [ '-j', '--flat-playlist' ]
+
+    const youtubeDL = await safeGetYoutubeDL()
+    youtubeDL.getInfo(url, args, processOptions, (err, info) => {
       if (err) return rej(err)
+      if (info.is_live === true) return rej(new Error('Cannot download a live streaming.'))
 
-      const obj = normalizeObject(info)
+      const obj = buildVideoInfo(normalizeObject(info))
+      if (obj.name && obj.name.length < CONSTRAINTS_FIELDS.VIDEOS.NAME.min) obj.name += ' video'
 
-      return res(buildVideoInfo(obj))
+      return res(obj)
     })
   })
 }
 
-function downloadYoutubeDLVideo (url: string) {
-  const hash = crypto.createHash('sha256').update(url).digest('base64')
-  const path = join(CONFIG.STORAGE.VIDEOS_DIR, hash + '-import.mp4')
+function downloadYoutubeDLVideo (url: string, timeout: number) {
+  const path = generateVideoImportTmpPath(url)
+  let timer
 
-  logger.info('Importing video %s', url)
+  logger.info('Importing youtubeDL video %s', url)
 
   const options = [ '-f', 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best', '-o', path ]
 
-  return new Promise<string>((res, rej) => {
-    youtubeDL.exec(url, options, async (err, output) => {
-      if (err) return rej(err)
+  return new Promise<string>(async (res, rej) => {
+    const youtubeDL = await safeGetYoutubeDL()
+    youtubeDL.exec(url, options, processOptions, err => {
+      clearTimeout(timer)
+
+      if (err) {
+        remove(path)
+          .catch(err => logger.error('Cannot delete path on YoutubeDL error.', { err }))
+
+        return rej(err)
+      }
 
       return res(path)
     })
+
+    timer = setTimeout(async () => {
+      await remove(path)
+
+      return rej(new Error('YoutubeDL download timeout.'))
+    }, timeout)
+  })
+}
+
+// Thanks: https://github.com/przemyslawpluta/node-youtube-dl/blob/master/lib/downloader.js
+// We rewrote it to avoid sync calls
+async function updateYoutubeDLBinary () {
+  logger.info('Updating youtubeDL binary.')
+
+  const binDirectory = join(root(), 'node_modules', 'youtube-dl', 'bin')
+  const bin = join(binDirectory, 'youtube-dl')
+  const detailsPath = join(binDirectory, 'details')
+  const url = 'https://yt-dl.org/downloads/latest/youtube-dl'
+
+  await ensureDir(binDirectory)
+
+  return new Promise(res => {
+    request.get(url, { followRedirect: false }, (err, result) => {
+      if (err) {
+        logger.error('Cannot update youtube-dl.', { err })
+        return res()
+      }
+
+      if (result.statusCode !== 302) {
+        logger.error('youtube-dl update error: did not get redirect for the latest version link. Status %d', result.statusCode)
+        return res()
+      }
+
+      const url = result.headers.location
+      const downloadFile = request.get(url)
+      const newVersion = /yt-dl\.org\/downloads\/(\d{4}\.\d\d\.\d\d(\.\d)?)\/youtube-dl/.exec(url)[ 1 ]
+
+      downloadFile.on('response', result => {
+        if (result.statusCode !== 200) {
+          logger.error('Cannot update youtube-dl: new version response is not 200, it\'s %d.', result.statusCode)
+          return res()
+        }
+
+        downloadFile.pipe(createWriteStream(bin, { mode: 493 }))
+      })
+
+      downloadFile.on('error', err => {
+        logger.error('youtube-dl update error.', { err })
+        return res()
+      })
+
+      downloadFile.on('end', () => {
+        const details = JSON.stringify({ version: newVersion, path: bin, exec: 'youtube-dl' })
+        writeFile(detailsPath, details, { encoding: 'utf8' }, err => {
+          if (err) {
+            logger.error('youtube-dl update error: cannot write details.', { err })
+            return res()
+          }
+
+          logger.info('youtube-dl updated to version %s.', newVersion)
+          return res()
+        })
+      })
+    })
   })
 }
 
+async function safeGetYoutubeDL () {
+  let youtubeDL
+
+  try {
+    youtubeDL = require('youtube-dl')
+  } catch (e) {
+    // Download binary
+    await updateYoutubeDLBinary()
+    youtubeDL = require('youtube-dl')
+  }
+
+  return youtubeDL
+}
+
 // ---------------------------------------------------------------------------
 
 export {
+  updateYoutubeDLBinary,
   downloadYoutubeDLVideo,
-  getYoutubeDLInfo
+  getYoutubeDLInfo,
+  safeGetYoutubeDL
 }
 
 // ---------------------------------------------------------------------------
@@ -120,7 +218,7 @@ function getTags (tags: any) {
 function getLicence (licence: string) {
   if (!licence) return undefined
 
-  if (licence.indexOf('Creative Commons Attribution licence') !== -1) return 1
+  if (licence.indexOf('Creative Commons Attribution') !== -1) return 1
 
   return undefined
 }