server: check old policy path for bundle ownership (#4847)

Before, we'd only check if the NEW policy path was owned by a bundle. Now,
we'll also check if the to-be-updated policy is owned by a bundle. If so,
return an error.

Fixes #4846

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
(cherry picked from commit b2bf19f)

server/server.go

@@ -1982,7 +1982,7 @@ func (s *Server) v1PoliciesPut(w http.ResponseWriter, r *http.Request) {
 	ctx := r.Context()
 	vars := mux.Vars(r)
 
-	path, err := url.PathUnescape(vars["path"])
+	id, err := url.PathUnescape(vars["path"])
 	if err != nil {
 		writer.ErrorString(w, http.StatusBadRequest, types.CodeInvalidParameter, err)
 		return
@@ -2010,7 +2010,12 @@ func (s *Server) v1PoliciesPut(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if bs, err := s.store.GetPolicy(ctx, txn, path); err != nil {
+	if err := s.checkPolicyIDScope(ctx, txn, id); err != nil && !storage.IsNotFound(err) {
+		s.abortAuto(ctx, txn, w, err)
+		return
+	}
+
+	if bs, err := s.store.GetPolicy(ctx, txn, id); err != nil {
 		if !storage.IsNotFound(err) {
 			s.abortAuto(ctx, txn, w, err)
 			return
@@ -2026,7 +2031,7 @@ func (s *Server) v1PoliciesPut(w http.ResponseWriter, r *http.Request) {
 	}
 
 	m.Timer(metrics.RegoModuleParse).Start()
-	parsedMod, err := ast.ParseModule(path, string(buf))
+	parsedMod, err := ast.ParseModule(id, string(buf))
 	m.Timer(metrics.RegoModuleParse).Stop()
 
 	if err != nil {
@@ -2057,7 +2062,7 @@ func (s *Server) v1PoliciesPut(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	modules[path] = parsedMod
+	modules[id] = parsedMod
 
 	c := ast.NewCompiler().
 		SetErrorLimit(s.errLimit).
@@ -2075,7 +2080,7 @@ func (s *Server) v1PoliciesPut(w http.ResponseWriter, r *http.Request) {
 
 	m.Timer(metrics.RegoModuleCompile).Stop()
 
-	if err := s.store.UpsertPolicy(ctx, txn, path, buf); err != nil {
+	if err := s.store.UpsertPolicy(ctx, txn, id, buf); err != nil {
 		s.abortAuto(ctx, txn, w, err)
 		return
 	}

server/server_test.go

@@ -1843,6 +1843,13 @@ func TestBundleScope(t *testing.T) {
 						code:   http.StatusBadRequest,
 						resp:   `{"code": "invalid_parameter", "message": "path a/b is owned by bundle \"test-bundle\""}`,
 					},
+					{
+						method: "PUT",
+						path:   "/policies/someid",
+						body:   `package other.path`,
+						code:   http.StatusBadRequest,
+						resp:   `{"code": "invalid_parameter", "message": "path x/y/z is owned by bundle \"test-bundle\""}`,
+					},
 					{
 						method: "DELETE",
 						path:   "/policies/someid",