Update für Device GUID

main.go

@@ -81,11 +81,123 @@ type InstalledApp struct {
 	Source      string `json:"source"` // HKLM-64, HKLM-32, HKCU
 }
 
+type DeviceInfo struct {
+	InstanceID    string `json:"instance_id"`
+	Class         string `json:"class"`
+	ClassGUID     string `json:"class_guid"`
+	FriendlyName  string `json:"friendly_name"`
+	Manufacturer  string `json:"manufacturer"`
+	Status        string `json:"status"`
+	Present       bool   `json:"present"`
+}
+
 var (
 	mu           sync.RWMutex
 	lastCPUUsage float64
 )
 
+func getPnpDevices() ([]DeviceInfo, error) {
+	// PowerShell: aktuelle PnP-Geräte, inkl. ClassGuid
+	cmd := exec.Command(
+		"powershell",
+		"-NoProfile",
+		"-NonInteractive",
+		"-Command",
+		`Get-PnpDevice -PresentOnly | Select-Object InstanceId,Class,ClassGuid,FriendlyName,Manufacturer,Status,Present | ConvertTo-Json -Depth 3`,
+	)
+
+	out, err := cmd.Output()
+	if err != nil {
+		log.Printf("getPnpDevices: powershell error: %v", err)
+		return nil, err
+	}
+	if len(out) == 0 {
+		return []DeviceInfo{}, nil
+	}
+
+	// PS gibt entweder ein Objekt oder ein Array zurück → wie bei getWinNetProfiles behandeln
+	type psDevice struct {
+		InstanceId   string      `json:"InstanceId"`
+		Class        string      `json:"Class"`
+		ClassGuid    string      `json:"ClassGuid"`
+		FriendlyName string      `json:"FriendlyName"`
+		Manufacturer string      `json:"Manufacturer"`
+		Status       string      `json:"Status"`
+		Present      interface{} `json:"Present"`
+	}
+
+	parsePresent := func(v interface{}) bool {
+		switch t := v.(type) {
+		case bool:
+			return t
+		case string:
+			// "True"/"False" etc.
+			return strings.EqualFold(t, "true")
+		default:
+			return false
+		}
+	}
+
+	var arr []psDevice
+	if err := json.Unmarshal(out, &arr); err == nil {
+		res := make([]DeviceInfo, 0, len(arr))
+		for _, d := range arr {
+			res = append(res, DeviceInfo{
+				InstanceID:   d.InstanceId,
+				Class:        d.Class,
+				ClassGUID:    d.ClassGuid,
+				FriendlyName: d.FriendlyName,
+				Manufacturer: d.Manufacturer,
+				Status:       d.Status,
+				Present:      parsePresent(d.Present),
+			})
+		}
+		return res, nil
+	}
+
+	// Ein einzelnes Objekt
+	var single psDevice
+	if err := json.Unmarshal(out, &single); err != nil {
+		log.Printf("getPnpDevices: cannot unmarshal: %v -- out: %s", err, string(out))
+		return nil, err
+	}
+	return []DeviceInfo{
+		{
+			InstanceID:   single.InstanceId,
+			Class:        single.Class,
+			ClassGUID:    single.ClassGuid,
+			FriendlyName: single.FriendlyName,
+			Manufacturer: single.Manufacturer,
+			Status:       single.Status,
+			Present:      parsePresent(single.Present),
+		},
+	}, nil
+}
+
+func devicesHandler(w http.ResponseWriter, r *http.Request) {
+	devs, err := getPnpDevices()
+	if err != nil {
+		http.Error(w, "failed to enumerate devices: "+err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	// Optional: Filter nur USB-Geräte (InstanceID beginnt mit "USB\")
+	if r.URL.Query().Get("only_usb") == "1" {
+		filtered := make([]DeviceInfo, 0, len(devs))
+		for _, d := range devs {
+			if strings.HasPrefix(strings.ToUpper(d.InstanceID), "USB\\") {
+				filtered = append(filtered, d)
+			}
+		}
+		devs = filtered
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	enc := json.NewEncoder(w)
+	enc.SetIndent("", "  ")
+	_ = enc.Encode(devs)
+}
+
 func readUninstallKey(base registry.Key, path, src string) []InstalledApp {
 	k, err := registry.OpenKey(base, path, registry.ENUMERATE_SUB_KEYS|registry.QUERY_VALUE)
 	if err != nil {
@@ -667,6 +779,7 @@ func runHTTP(ctx context.Context) error {
 	mux.HandleFunc("/", indexHandler)
 	mux.HandleFunc("/api/apps", appsHandler)
 	mux.HandleFunc("/api/summary", apiHandler)
+	mux.HandleFunc("/api/devices", devicesHandler) 
 
 	addr := ":24000"