X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=server%2Fhelpers%2Fwebtorrent.ts;h=d2a22e8f0e9b79ffbc75d3ae2ff3f27a6618a547;hb=30ff39e7f07898ebb716c938123825c678b4e5af;hp=121cd0b41747903f8c1f9b27a46cbc4800a46318;hpb=3e17515e2996b79e23f569c296051a91af3fcbe4;p=github%2FChocobozzz%2FPeerTube.git

diff --git a/server/helpers/webtorrent.ts b/server/helpers/webtorrent.ts
index 121cd0b41..d2a22e8f0 100644
--- a/server/helpers/webtorrent.ts
+++ b/server/helpers/webtorrent.ts
@@ -1,37 +1,108 @@
 import { logger } from './logger'
-import { generateVideoTmpPath } from './utils'
+import { generateVideoImportTmpPath } from './utils'
 import * as WebTorrent from 'webtorrent'
-import { createWriteStream } from 'fs'
-import { CONFIG } from '../initializers'
-import { join } from 'path'
+import { createWriteStream, ensureDir, remove } from 'fs-extra'
+import { CONFIG } from '../initializers/config'
+import { dirname, join } from 'path'
+import * as createTorrent from 'create-torrent'
+import { promisify2 } from './core-utils'
 
-function downloadWebTorrentVideo (target: { magnetUri: string, torrentName: string }) {
+async function downloadWebTorrentVideo (target: { magnetUri: string, torrentName?: string }, timeout: number) {
   const id = target.magnetUri || target.torrentName
+  let timer
 
-  const path = generateVideoTmpPath(id)
+  const path = generateVideoImportTmpPath(id)
   logger.info('Importing torrent video %s', id)
 
+  const directoryPath = join(CONFIG.STORAGE.TMP_DIR, 'webtorrent')
+  await ensureDir(directoryPath)
+
   return new Promise<string>((res, rej) => {
     const webtorrent = new WebTorrent()
+    let file: WebTorrent.TorrentFile
 
     const torrentId = target.magnetUri || join(CONFIG.STORAGE.TORRENTS_DIR, target.torrentName)
-    const torrent = webtorrent.add(torrentId, torrent => {
-      if (torrent.files.length !== 1) return rej(new Error('The number of files is not equal to 1 for ' + torrentId))
 
-      const file = torrent.files[ 0 ]
+    const options = { path: directoryPath }
+    const torrent = webtorrent.add(torrentId, options, torrent => {
+      if (torrent.files.length !== 1) {
+        if (timer) clearTimeout(timer)
+
+        for (let file of torrent.files) {
+          deleteDownloadedFile({ directoryPath, filepath: file.path })
+        }
+
+        return safeWebtorrentDestroy(webtorrent, torrentId, undefined, target.torrentName)
+          .then(() => rej(new Error('Cannot import torrent ' + torrentId + ': there are multiple files in it')))
+      }
 
+      file = torrent.files[ 0 ]
+
+      // FIXME: avoid creating another stream when https://github.com/webtorrent/webtorrent/issues/1517 is fixed
       const writeStream = createWriteStream(path)
-      writeStream.on('finish', () => res(path))
+      writeStream.on('finish', () => {
+        if (timer) clearTimeout(timer)
+
+        return safeWebtorrentDestroy(webtorrent, torrentId, { directoryPath, filepath: file.path }, target.torrentName)
+          .then(() => res(path))
+      })
 
       file.createReadStream().pipe(writeStream)
     })
 
     torrent.on('error', err => rej(err))
+
+    timer = setTimeout(async () => {
+      return safeWebtorrentDestroy(webtorrent, torrentId, file ? { directoryPath, filepath: file.path } : undefined, target.torrentName)
+        .then(() => rej(new Error('Webtorrent download timeout.')))
+    }, timeout)
   })
 }
 
+const createTorrentPromise = promisify2<string, any, any>(createTorrent)
+
 // ---------------------------------------------------------------------------
 
 export {
+  createTorrentPromise,
   downloadWebTorrentVideo
 }
+
+// ---------------------------------------------------------------------------
+
+function safeWebtorrentDestroy (
+  webtorrent: WebTorrent.Instance,
+  torrentId: string,
+  downloadedFile?: { directoryPath: string, filepath: string },
+  torrentName?: string
+) {
+  return new Promise(res => {
+    webtorrent.destroy(err => {
+      // Delete torrent file
+      if (torrentName) {
+        logger.debug('Removing %s torrent after webtorrent download.', torrentId)
+        remove(torrentId)
+          .catch(err => logger.error('Cannot remove torrent %s in webtorrent download.', torrentId, { err }))
+      }
+
+      // Delete downloaded file
+      if (downloadedFile) deleteDownloadedFile(downloadedFile)
+
+      if (err) logger.warn('Cannot destroy webtorrent in timeout.', { err })
+
+      return res()
+    })
+  })
+}
+
+function deleteDownloadedFile (downloadedFile: { directoryPath: string, filepath: string }) {
+  // We want to delete the base directory
+  let pathToDelete = dirname(downloadedFile.filepath)
+  if (pathToDelete === '.') pathToDelete = downloadedFile.filepath
+
+  const toRemovePath = join(downloadedFile.directoryPath, pathToDelete)
+
+  logger.debug('Removing %s after webtorrent download.', toRemovePath)
+  remove(toRemovePath)
+    .catch(err => logger.error('Cannot remove torrent file %s in webtorrent download.', toRemovePath, { err }))
+}