1 files changed, 49 insertions, 0 deletions

diff --git a/server/lib/video-tokens-manager.ts b/server/lib/video-tokens-manager.ts
new file mode 100644
index 000000000..c43085d16
--- /dev/null
+++ b/server/lib/video-tokens-manager.ts
@@ -0,0 +1,49 @@
+import LRUCache from 'lru-cache'
+import { LRU_CACHE } from '@server/initializers/constants'
+import { buildUUID } from '@shared/extra-utils'
+
+// ---------------------------------------------------------------------------
+// Create temporary tokens that can be used as URL query parameters to access video static files
+// ---------------------------------------------------------------------------
+
+class VideoTokensManager {
+
+  private static instance: VideoTokensManager
+
+  private readonly lruCache = new LRUCache<string, string>({
+    max: LRU_CACHE.VIDEO_TOKENS.MAX_SIZE,
+    ttl: LRU_CACHE.VIDEO_TOKENS.TTL
+  })
+
+  private constructor () {}
+
+  create (videoUUID: string) {
+    const token = buildUUID()
+
+    const expires = new Date(new Date().getTime() + LRU_CACHE.VIDEO_TOKENS.TTL)
+
+    this.lruCache.set(token, videoUUID)
+
+    return { token, expires }
+  }
+
+  hasToken (options: {
+    token: string
+    videoUUID: string
+  }) {
+    const value = this.lruCache.get(options.token)
+    if (!value) return false
+
+    return value === options.videoUUID
+  }
+
+  static get Instance () {
+    return this.instance || (this.instance = new this())
+  }
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  VideoTokensManager
+}