From ee2344502eaa139636afd97483b414f1f8d58145 Mon Sep 17 00:00:00 2001
From: Pascal Fischer <32096965+pascal-fischer@users.noreply.github.com>
Date: Mon, 21 Sep 2026 17:26:52 +0200
Subject: [PATCH] [management] fix group resource validation (#7608)

---
 .../http/handlers/groups/groups_handler.go    | 45 ++++++++++++-------
 .../handlers/groups/groups_handler_test.go    | 43 +++++++++++++++++-
 2 files changed, 71 insertions(+), 17 deletions(-)

diff --git a/management/server/http/handlers/groups/groups_handler.go b/management/server/http/handlers/groups/groups_handler.go
index f8d161a87..ed01e7c3d 100644
--- a/management/server/http/handlers/groups/groups_handler.go
+++ b/management/server/http/handlers/groups/groups_handler.go
@@ -148,13 +148,10 @@ func (h *handler) updateGroup(w http.ResponseWriter, r *http.Request) {
 		peers = *req.Peers
 	}
 
-	resources := make([]types.Resource, 0)
-	if req.Resources != nil {
-		for _, res := range *req.Resources {
-			resource := types.Resource{}
-			resource.FromAPIRequest(&res)
-			resources = append(resources, resource)
-		}
+	resources, err := resourcesFromAPIRequest(req.Resources)
+	if err != nil {
+		util.WriteError(r.Context(), err, w)
+		return
 	}
 
 	group := types.Group{
@@ -210,13 +207,10 @@ func (h *handler) createGroup(w http.ResponseWriter, r *http.Request) {
 		peers = *req.Peers
 	}
 
-	resources := make([]types.Resource, 0)
-	if req.Resources != nil {
-		for _, res := range *req.Resources {
-			resource := types.Resource{}
-			resource.FromAPIRequest(&res)
-			resources = append(resources, resource)
-		}
+	resources, err := resourcesFromAPIRequest(req.Resources)
+	if err != nil {
+		util.WriteError(r.Context(), err, w)
+		return
 	}
 
 	group := types.Group{
@@ -335,11 +329,30 @@ func toGroupResponse(peers []*nbpeer.Peer, group *types.Group) *api.Group {
 	gr.PeersCount = len(gr.Peers)
 
 	for _, res := range group.Resources {
-		resResp := res.ToAPIResponse()
-		gr.Resources = append(gr.Resources, *resResp)
+		if resResp := res.ToAPIResponse(); resResp != nil {
+			gr.Resources = append(gr.Resources, *resResp)
+		}
 	}
 
 	gr.ResourcesCount = len(gr.Resources)
 
 	return &gr
 }
+
+func resourcesFromAPIRequest(req *[]api.Resource) ([]types.Resource, error) {
+	resources := make([]types.Resource, 0)
+	if req == nil {
+		return resources, nil
+	}
+
+	for _, res := range *req {
+		if res.Id == "" || !types.ResourceType(res.Type).Valid() {
+			return nil, status.Errorf(status.InvalidArgument, "resource id shouldn't be empty and type must be one of: peer, domain, host, subnet")
+		}
+		resource := types.Resource{}
+		resource.FromAPIRequest(&res)
+		resources = append(resources, resource)
+	}
+
+	return resources, nil
+}
diff --git a/management/server/http/handlers/groups/groups_handler_test.go b/management/server/http/handlers/groups/groups_handler_test.go
index 57e238630..78e4a2578 100644
--- a/management/server/http/handlers/groups/groups_handler_test.go
+++ b/management/server/http/handlers/groups/groups_handler_test.go
@@ -8,8 +8,8 @@ import (
 	"fmt"
 	"io"
 	"net/http"
-	"net/netip"
 	"net/http/httptest"
+	"net/netip"
 	"strings"
 	"testing"
 
@@ -208,6 +208,33 @@ func TestWriteGroup(t *testing.T) {
 			expectedStatus: http.StatusUnprocessableEntity,
 			expectedBody:   false,
 		},
+		{
+			name:        "Write Group POST Empty Resource",
+			requestType: http.MethodPost,
+			requestPath: "/api/groups",
+			requestBody: bytes.NewBuffer(
+				[]byte(`{"name":"With Resource","resources":[{}]}`)),
+			expectedStatus: http.StatusUnprocessableEntity,
+			expectedBody:   false,
+		},
+		{
+			name:        "Write Group PUT Empty Resource",
+			requestType: http.MethodPut,
+			requestPath: "/api/groups/id-existed",
+			requestBody: bytes.NewBuffer(
+				[]byte(`{"name":"With Resource","resources":[{"id":"","type":"host"}]}`)),
+			expectedStatus: http.StatusUnprocessableEntity,
+			expectedBody:   false,
+		},
+		{
+			name:        "Write Group POST Unknown Resource Type",
+			requestType: http.MethodPost,
+			requestPath: "/api/groups",
+			requestBody: bytes.NewBuffer(
+				[]byte(`{"name":"With Resource","resources":[{"id":"res-1","type":"banana"}]}`)),
+			expectedStatus: http.StatusUnprocessableEntity,
+			expectedBody:   false,
+		},
 		{
 			name:        "Write Group PUT OK",
 			requestType: http.MethodPut,
@@ -376,6 +403,20 @@ func TestGetAllGroups(t *testing.T) {
 	}
 }
 
+func TestToGroupResponseSkipsEmptyResource(t *testing.T) {
+	group := &types.Group{
+		ID:        "id-resources",
+		Name:      "Resources",
+		Issued:    types.GroupIssuedAPI,
+		Resources: []types.Resource{{}, {ID: "res-1", Type: types.ResourceTypeHost}},
+	}
+
+	got := toGroupResponse(nil, group)
+
+	assert.Equal(t, 1, got.ResourcesCount)
+	assert.Equal(t, []api.Resource{{Id: "res-1", Type: api.ResourceType(types.ResourceTypeHost)}}, got.Resources)
+}
+
 func TestDeleteGroup(t *testing.T) {
 	tt := []struct {
 		name           string