webui: fix more wrappers decoding keyed GETs as bare nodes

Three more RESTCONF wrappers assume the response to a keyed GET is the
bare node, when the server nests it under the full parent path: the
container resource-usage stats always read zero, the WireGuard listen
port never populated, and resetting advertised link modes silently
re-enabled auto-negotiation on links where it was forced off.

Same class of bug as the firewall zone reset fix: the decode matches
nothing and the zero value is used as if valid.  Model the full nesting
in all three wrappers, reusing the existing container list wrapper.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/webui/internal/handlers/configure_interfaces.go

@@ -1369,15 +1369,22 @@ func (h *ConfigureInterfacesHandler) ResetEthernetAdvertised(w http.ResponseWrit
 	name := r.PathValue("name")
 	base := ifacePath(name) + "/ieee802-ethernet-interface:ethernet"
 
+	// Keyed GETs nest the requested node under its full parent path.
 	var resp struct {
-		AN struct {
-			Enable *bool `json:"enable"`
-		} `json:"ieee802-ethernet-interface:auto-negotiation"`
+		Interfaces struct {
+			Interface []struct {
+				Ethernet struct {
+					AN struct {
+						Enable *bool `json:"enable"`
+					} `json:"auto-negotiation"`
+				} `json:"ieee802-ethernet-interface:ethernet"`
+			} `json:"interface"`
+		} `json:"ietf-interfaces:interfaces"`
 	}
 	enable := true // YANG default
 	if err := h.RC.Get(r.Context(), base+"/auto-negotiation", &resp); err == nil {
-		if resp.AN.Enable != nil {
-			enable = *resp.AN.Enable
+		if ifs := resp.Interfaces.Interface; len(ifs) > 0 && ifs[0].Ethernet.AN.Enable != nil {
+			enable = *ifs[0].Ethernet.AN.Enable
 		}
 	} else if !restconf.IsNotFound(err) {
 		log.Printf("configure interfaces %s reset advertised get: %v", name, err)

src/webui/internal/handlers/containers.go

@@ -46,11 +46,6 @@ type containerListWrapper struct {
 	} `json:"infix-containers:containers"`
 }
 
-// containerResourceUsageWrapper wraps the RESTCONF resource-usage response.
-type containerResourceUsageWrapper struct {
-	ResourceUsage containerResourceUsageJSON `json:"infix-containers:resource-usage"`
-}
-
 // ContainerEntry holds display-ready data for a single container row.
 type ContainerEntry struct {
 	Name     string
@@ -106,13 +101,16 @@ func (h *ContainersHandler) Overview(w http.ResponseWriter, r *http.Request) {
 				defer wg.Done()
 				path := fmt.Sprintf("/data/infix-containers:containers/container=%s/resource-usage",
 					url.PathEscape(name))
-				var w containerResourceUsageWrapper
+				var w containerListWrapper // keyed GETs nest under the full parent path
 				if err := h.RC.Get(ctx, path, &w); err != nil {
 					log.Printf("restconf resource-usage %s: %v", name, err)
 					return
 				}
+				if len(w.Containers.Container) == 0 {
+					return
+				}
 				mu.Lock()
-				usages[idx] = w.ResourceUsage
+				usages[idx] = w.Containers.Container[0].ResourceUsage
 				mu.Unlock()
 			}(i, c.Name)
 		}

src/webui/internal/handlers/vpn.go

@@ -21,8 +21,13 @@ type wgConfigJSON struct {
 }
 
 // wgIfaceConfigWrapper is used to fetch per-interface WireGuard config.
+// Keyed GETs nest the requested node under its full parent path.
 type wgIfaceConfigWrapper struct {
-	WireGuard *wgConfigJSON `json:"infix-interfaces:wireguard"`
+	Interfaces struct {
+		Interface []struct {
+			WireGuard *wgConfigJSON `json:"infix-interfaces:wireguard"`
+		} `json:"interface"`
+	} `json:"ietf-interfaces:interfaces"`
 }
 
 // WGPeer holds display-ready data for a single WireGuard peer.
@@ -128,8 +133,9 @@ func buildWGTunnel(ctx context.Context, rc *restconf.Client, iface ifaceJSON) WG
 	// Fetch ListenPort from config endpoint (separate from oper-state).
 	var cfgWrap wgIfaceConfigWrapper
 	path := fmt.Sprintf("/data/ietf-interfaces:interfaces/interface=%s/infix-interfaces:wireguard", iface.Name)
-	if err := rc.Get(ctx, path, &cfgWrap); err == nil && cfgWrap.WireGuard != nil {
-		tunnel.ListenPort = cfgWrap.WireGuard.ListenPort
+	if err := rc.Get(ctx, path, &cfgWrap); err == nil &&
+		len(cfgWrap.Interfaces.Interface) > 0 && cfgWrap.Interfaces.Interface[0].WireGuard != nil {
+		tunnel.ListenPort = cfgWrap.Interfaces.Interface[0].WireGuard.ListenPort
 	}
 
 	// Build peers from embedded peer-status.