lib/model: Don't send locally changed on recv-enc (fixes #7137) (#7147)

go.sum

@@ -250,6 +250,7 @@ github.com/lightstep/lightstep-tracer-common/golang/gogo v0.0.0-20190605223551-b
 github.com/lightstep/lightstep-tracer-go v0.18.1/go.mod h1:jlF1pusYV4pidLvZ+XD0UBX0ZE6WURAspgAczcDHrL4=
 github.com/lucas-clemente/quic-go v0.18.1 h1:DMR7guC0NtVS8zNZR3IO7NARZvZygkSC56GGtC6cyys=
 github.com/lucas-clemente/quic-go v0.18.1/go.mod h1:yXttHsSNxQi8AWijC/vLP+OJczXqzHSOcJrM5ITUlCg=
+github.com/lucas-clemente/quic-go v0.19.2 h1:w8BBYUx5Z+kNpeaOeQW/KzcNsKWhh4O6PeQhb0nURPg=
 github.com/lucas-clemente/quic-go v0.19.2/go.mod h1:ZUygOqIoai0ASXXLJ92LTnKdbqh9MHCLTX6Nr1jUrK0=
 github.com/lunixbochs/vtclean v1.0.0/go.mod h1:pHhQNgMf3btfWnGBVipUOjRYhoOsdGqdm/+2c2E2WMI=
 github.com/lyft/protoc-gen-validate v0.0.13/go.mod h1:XbGvPuh87YZc5TdIa2/I4pLk0QoUACkjt2znoq26NVQ=
@@ -260,6 +261,7 @@ github.com/marten-seemann/qpack v0.2.1/go.mod h1:F7Gl5L1jIgN1D11ucXefiuJS9UMVP2o
 github.com/marten-seemann/qtls v0.10.0/go.mod h1:UvMd1oaYDACI99/oZUYLzMCkBXQVT0aGm99sJhbT8hs=
 github.com/marten-seemann/qtls-go1-15 v0.1.0 h1:i/YPXVxz8q9umso/5y474CNcHmTpA+5DH+mFPjx6PZg=
 github.com/marten-seemann/qtls-go1-15 v0.1.0/go.mod h1:GyFwywLKkRt+6mfU99csTEY1joMZz5vmB1WNZH3P81I=
+github.com/marten-seemann/qtls-go1-15 v0.1.1 h1:LIH6K34bPVttyXnUWixk0bzH6/N07VxbSabxn5A5gZQ=
 github.com/marten-seemann/qtls-go1-15 v0.1.1/go.mod h1:GyFwywLKkRt+6mfU99csTEY1joMZz5vmB1WNZH3P81I=
 github.com/maruel/panicparse v1.5.1 h1:hUPcXI7ubtEqj/k+P34KsHQqb86zuVk7zBfkP6tBBPc=
 github.com/maruel/panicparse v1.5.1/go.mod h1:aOutY/MUjdj80R0AEVI9qE2zHqig+67t2ffUDDiLzAM=

lib/model/indexsender.go

@@ -315,6 +315,7 @@ func (r *indexSenderRegistry) addLocked(folder config.FolderConfiguration, fset
 		conn:                     r.conn,
 		connClosed:               r.closed,
 		folder:                   folder.ID,
+		folderIsReceiveEncrypted: folder.Type == config.FolderTypeReceiveEncrypted,
 		fset:                     fset,
 		prevSequence:             startSequence,
 		evLogger:                 r.evLogger,

lib/model/requests_test.go

@@ -1334,3 +1334,67 @@ func TestRequestIndexSenderClusterConfigBeforeStart(t *testing.T) {
 	case <-indexChan:
 	}
 }
+
+func TestRequestReceiveEncryptedLocalNoSend(t *testing.T) {
+	w, fcfg := tmpDefaultWrapper()
+	tfs := fcfg.Filesystem()
+	fcfg.Type = config.FolderTypeReceiveEncrypted
+	waiter, err := w.SetFolder(fcfg)
+	must(t, err)
+	waiter.Wait()
+
+	encToken := protocol.PasswordToken(fcfg.ID, "pw")
+	must(t, tfs.Mkdir(config.DefaultMarkerName, 0777))
+	must(t, writeEncryptionToken(encToken, fcfg))
+
+	m := setupModel(w)
+	defer cleanupModelAndRemoveDir(m, tfs.URI())
+
+	fc := &fakeConnection{id: device1, model: m}
+	m.AddConnection(fc, protocol.Hello{})
+	m.ClusterConfig(device1, protocol.ClusterConfig{
+		Folders: []protocol.Folder{
+			{
+				ID: "default",
+				Devices: []protocol.Device{
+					{
+						ID:                      myID,
+						EncryptionPasswordToken: encToken,
+					},
+					{ID: device1},
+				},
+			},
+		},
+	})
+
+	indexChan := make(chan []protocol.FileInfo, 1)
+	done := make(chan struct{})
+	defer close(done)
+	fc.mut.Lock()
+	fc.indexFn = func(_ context.Context, _ string, fs []protocol.FileInfo) {
+		select {
+		case indexChan <- fs:
+		case <-done:
+		}
+	}
+	fc.mut.Unlock()
+
+	files := genFiles(2)
+	files[1].LocalFlags = protocol.FlagLocalReceiveOnly
+	m.fmut.RLock()
+	fset := m.folderFiles[fcfg.ID]
+	m.fmut.RUnlock()
+	fset.Update(protocol.LocalDeviceID, files)
+
+	select {
+	case fs := <-indexChan:
+		if len(fs) != 1 {
+			t.Error("Expected index with one file, got", fs)
+		}
+		if got := fs[0].Name; got != files[0].Name {
+			t.Errorf("Expected file %v, got %v", got, files[0].Name)
+		}
+	case <-time.After(5 * time.Second):
+		t.Fatal("timed out before receiving index")
+	}
+}