gpupdate eingebaut

README.md

@@ -20,6 +20,8 @@
 - sc.exe description GoSysInfoService "Hilden PC-Info"
 - sc.exe start GoSysInfoService
 
+- http://localhost:24000/api/devices?only_usb=1
+
 ---
 
 ## Quickstart

main.go

@@ -14,8 +14,10 @@ import (
 	"os/user"
 	"runtime"
 	"sort"
+	"strconv"
 	"strings"
 	"sync"
+	"syscall"
 	"time"
 
 	"github.com/shirou/gopsutil/v3/cpu"
@@ -91,11 +93,149 @@ type DeviceInfo struct {
 	Present      bool   `json:"present"`
 }
 
+type Notification struct {
+	ID         int64     `json:"id"`
+	CreatedAt  time.Time `json:"created_at"`
+	Title      string    `json:"title"`
+	Message    string    `json:"message"`
+	TargetUser string    `json:"target_user"` // "" = Broadcast an alle User
+}
+
+var (
+	notifyMu   sync.Mutex
+	notifySeq  int64
+	notifyRing []Notification
+)
+
+// maximale Anzahl vorgehaltener Nachrichten (FIFO-Ring)
+const maxNotifications = 1000
+
 var (
 	mu           sync.RWMutex
 	lastCPUUsage float64
 )
 
+func addNotification(n Notification) Notification {
+	notifyMu.Lock()
+	defer notifyMu.Unlock()
+
+	notifySeq++
+	n.ID = notifySeq
+	if n.CreatedAt.IsZero() {
+		n.CreatedAt = time.Now()
+	}
+
+	notifyRing = append(notifyRing, n)
+	if len(notifyRing) > maxNotifications {
+		// älteste abschneiden
+		notifyRing = notifyRing[len(notifyRing)-maxNotifications:]
+	}
+	return n
+}
+
+// userName: z.B. "DOMAIN\\user" oder "user"
+// sinceID: letzte gesehene ID des Agents
+func getNotificationsForUser(userName string, sinceID int64) []Notification {
+	notifyMu.Lock()
+	defer notifyMu.Unlock()
+
+	userNameLower := strings.ToLower(strings.TrimSpace(userName))
+	var res []Notification
+	for _, n := range notifyRing {
+		if n.ID <= sinceID {
+			continue
+		}
+		// Broadcast
+		if strings.TrimSpace(n.TargetUser) == "" {
+			res = append(res, n)
+			continue
+		}
+		// Ziel-User matchen (case-insensitive)
+		if strings.EqualFold(n.TargetUser, userName) ||
+			strings.EqualFold(n.TargetUser, userNameLower) {
+			res = append(res, n)
+		}
+	}
+	return res
+}
+
+type NotifyRequest struct {
+	Title      string `json:"title"`
+	Message    string `json:"message"`
+	TargetUser string `json:"target_user"` // optional, "" = an alle
+}
+
+func notifyFromServerHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	// optional: Authentifizierung per Token
+	token := os.Getenv("NOTIFY_TOKEN")
+	if token != "" && r.Header.Get("X-Notify-Token") != token {
+		http.Error(w, "unauthorized", http.StatusUnauthorized)
+		return
+	}
+
+	var req NotifyRequest
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(w, "bad request: "+err.Error(), http.StatusBadRequest)
+		return
+	}
+	req.Title = strings.TrimSpace(req.Title)
+	req.Message = strings.TrimSpace(req.Message)
+	req.TargetUser = strings.TrimSpace(req.TargetUser)
+
+	if req.Message == "" {
+		http.Error(w, "message must not be empty", http.StatusBadRequest)
+		return
+	}
+	if req.Title == "" {
+		req.Title = "Benachrichtigung"
+	}
+
+	n := addNotification(Notification{
+		Title:      req.Title,
+		Message:    req.Message,
+		TargetUser: req.TargetUser,
+	})
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(n)
+}
+
+func notificationsForAgentHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	userName := strings.TrimSpace(r.URL.Query().Get("user"))
+	if userName == "" {
+		http.Error(w, "missing 'user' query parameter", http.StatusBadRequest)
+		return
+	}
+
+	sinceStr := r.URL.Query().Get("since_id")
+	var sinceID int64
+	if sinceStr != "" {
+		if v, err := strconv.ParseInt(sinceStr, 10, 64); err == nil {
+			sinceID = v
+		}
+	}
+
+	// optional: Zugriff auf localhost beschränken
+	host, _, _ := net.SplitHostPort(r.RemoteAddr)
+	if host != "127.0.0.1" && host != "::1" {
+		http.Error(w, "forbidden", http.StatusForbidden)
+		return
+	}
+
+	notifs := getNotificationsForUser(userName, sinceID)
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(notifs)
+}
+
 func getPnpDevices() ([]DeviceInfo, error) {
 	// PowerShell: aktuelle PnP-Geräte, inkl. ClassGuid
 	cmd := exec.Command(
@@ -577,6 +717,17 @@ var page = template.Must(template.New("index").Parse(`<!doctype html>
 	<div class="row"><div>Uptime</div><div class="v" id="uptime"></div></div>
 	<div class="row"><div>Boot</div><div class="v" id="boottime"></div></div>
 	<div class="row"><div>Arch</div><div class="v mono" id="arch"></div></div>
+
+	<div class="row" style="margin-top:8px;">
+		<div>Aktionen</div>
+		<div>
+		<button id="btnGpupdate" class="pill2" style="cursor:pointer;">gpupdate /force</button>
+		</div>
+	</div>
+	<div class="row">
+		<div></div>
+		<div class="mono" id="gpupdateResult" style="font-size:12px;color:var(--muted);white-space:pre-wrap;"></div>
+	</div>
 	</div>
 
     <div class="card">
@@ -746,6 +897,29 @@ document.addEventListener('DOMContentLoaded', ()=>{
       renderApps(filtered);
     });
   }
+
+  const btnGp = document.getElementById('btnGpupdate');
+  const resGp = document.getElementById('gpupdateResult');
+  if (btnGp && resGp) {
+    btnGp.addEventListener('click', async ()=>{
+      resGp.textContent = 'gpupdate /force wird gestartet …';
+      try {
+        const r = await fetch('/api/gpupdate', { method: 'POST' });
+        if (!r.ok) {
+          resGp.textContent = 'Fehler: HTTP ' + r.status + ' ' + r.statusText;
+          return;
+        }
+        const j = await r.json();
+        if (j.ok) {
+          resGp.textContent = 'gpupdate /force ausgeführt (ExitCode ' + (j.exit_code ?? 0) + ').';
+        } else {
+          resGp.textContent = 'Fehler bei gpupdate (ExitCode ' + (j.exit_code ?? -1) + '): ' + (j.error || '');
+        }
+      } catch (e) {
+        resGp.textContent = 'Request-Fehler: ' + e;
+      }
+    });
+  }
 });
 </script>
 </body>
@@ -780,6 +954,10 @@ func runHTTP(ctx context.Context) error {
 	mux.HandleFunc("/api/apps", appsHandler)
 	mux.HandleFunc("/api/summary", apiHandler)
 	mux.HandleFunc("/api/devices", devicesHandler)
+	mux.HandleFunc("/api/gpupdate", gpupdateHandler)
+
+	mux.HandleFunc("/api/notify", notifyFromServerHandler)
+	mux.HandleFunc("/api/notifications", notificationsForAgentHandler)
 
 	addr := ":24000"
 
@@ -937,3 +1115,61 @@ func getWinNetProfiles() (map[int]string, error) {
 	res[single.InterfaceIndex] = normalizeCat(single.NetworkCategory)
 	return res, nil
 }
+
+type GPUpdateResponse struct {
+	OK       bool   `json:"ok"`
+	ExitCode int    `json:"exit_code"`
+	Stdout   string `json:"stdout"`
+	Stderr   string `json:"stderr"`
+	Error    string `json:"error,omitempty"`
+}
+
+func gpupdateHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	// nur lokale Aufrufe zulassen
+	host, _, _ := net.SplitHostPort(r.RemoteAddr)
+	if host != "127.0.0.1" && host != "::1" {
+		http.Error(w, "forbidden", http.StatusForbidden)
+		return
+	}
+
+	ctx, cancel := context.WithTimeout(r.Context(), 2*time.Minute)
+	defer cancel()
+
+	cmd := exec.CommandContext(ctx, "cmd", "/C", "gpupdate", "/force")
+	out, err := cmd.CombinedOutput()
+
+	resp := GPUpdateResponse{
+		Stdout: string(out),
+		Stderr: "",
+		OK:     true,
+	}
+
+	// Timeout?
+	if ctx.Err() == context.DeadlineExceeded {
+		resp.OK = false
+		resp.Error = "gpupdate /force: Timeout (2 Minuten)"
+	}
+
+	// Exitcode auswerten
+	if err != nil {
+		resp.OK = false
+		resp.Error = err.Error()
+		if exitErr, ok := err.(*exec.ExitError); ok {
+			if status, ok2 := exitErr.Sys().(syscall.WaitStatus); ok2 {
+				resp.ExitCode = status.ExitStatus()
+			}
+		}
+	} else if cmd.ProcessState != nil {
+		if status, ok := cmd.ProcessState.Sys().(syscall.WaitStatus); ok {
+			resp.ExitCode = status.ExitStatus()
+		}
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(resp)
+}