Separate PROPFIND logic for Depth 1 and infinity (#779)

Switching to path concatenation broke some cross-storage cases.
Since clients currently only use Depth 1, here we make sure that at
least this works.
For the infinity case, it is limited to single storage recursion for
now.

internal/http/services/owncloud/ocdav/propfind.go

@@ -97,7 +97,25 @@ func (s *svc) handlePropfind(w http.ResponseWriter, r *http.Request, ns string)
 
 	info := res.Info
 	infos := []*provider.ResourceInfo{info}
-	if info.Type == provider.ResourceType_RESOURCE_TYPE_CONTAINER && depth != "0" {
+	if info.Type == provider.ResourceType_RESOURCE_TYPE_CONTAINER && depth == "1" {
+		req := &provider.ListContainerRequest{
+			Ref: ref,
+		}
+		res, err := client.ListContainer(ctx, req)
+		if err != nil {
+			log.Error().Err(err).Msg("error sending list container grpc request")
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		}
+
+		if res.Status.Code != rpc.Code_CODE_OK {
+			log.Err(err).Msg("error calling grpc list container")
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		}
+		infos = append(infos, res.Infos...)
+	} else if depth == "infinity" {
+		// FIXME: doesn't work cross-storage as the results will have the wrong paths!
 		// use a stack to explore sub-containers breadth-first
 		stack := []string{info.Path}
 		for len(stack) > 0 {