Fix #3444, support single file hybrid torrents. (#3446)

libtransmission/torrent-metainfo.cc

@@ -244,6 +244,7 @@ struct MetainfoHandler final : public transmission::benc::BasicHandler<MaxBencDe
         {
             // v2, ignore for today
             tr_logAddInfo("'file tree' is ignored");
+            state_ = State::UsePath;
         }
         else if (state_ == State::Files) // bittorrent v1 format
         {
@@ -254,6 +255,10 @@ struct MetainfoHandler final : public transmission::benc::BasicHandler<MaxBencDe
 
             file_subpath_.clear();
         }
+        else if (state_ == State::PieceLayers)
+        {
+            state_ = State::UsePath;
+        }
 
         return depth() > 0;
     }

tests/utils/CMakeLists.txt

@@ -15,3 +15,4 @@ AddShowTest(transmission-show-bittorrent-v2-hybrid-test bittorrent-v2-hybrid-tes
 AddShowTest(transmission-show-inner-sanctum Inner_Sanctum_movie_archive)
 AddShowTest(transmission-show-thor Thor_and_the_Amazon_Women.avi)
 AddShowTest(transmission-show-ubuntu ubuntu-20.04.3-desktop-amd64.iso)
+AddShowTest(transmission-show-ubuntu-hybrid hybrid-single-ubuntu-20.04.3-desktop-amd64.iso)

tests/utils/assets/hybrid-single-ubuntu-20.04.3-desktop-amd64.iso.show

@@ -0,0 +1,25 @@
+Name: ubuntu-20.04.3-desktop-amd64.iso
+File: assets/hybrid-single-ubuntu-20.04.3-desktop-amd64.iso.torrent
+
+GENERAL
+
+  Name: ubuntu-20.04.3-desktop-amd64.iso
+  Hash v1: c4b7a178451f4f1a5154ffe1e780b168d6482e98
+  Hash v2: e07f234e9d32eda230d13b7d28bfc07ddd324aa2653c51ed966e9dbadaaa8fa9
+  Created by: Unknown
+  Created on: Unknown
+
+  Piece Count: 11719
+  Piece Size: 256.0 KiB
+  Total Size: 3.07 GB
+  Privacy: Public torrent
+
+TRACKERS
+
+  Tier #1
+  http://example.com/announce
+
+FILES
+
+  ubuntu-20.04.3-desktop-amd64.iso (3.07 GB)
+