Gerätelimit drin

.claude/settings.local.json

@@ -60,7 +60,8 @@
       "Bash(/home/rac00n/.npm-global/lib/node_modules/@anthropic-ai/claude-code/vendor/ripgrep/x64-linux/rg -n \"href=[''\"\"][/]?(dashboard)?[''\"\"]\" --type html)",
       "Bash(/home/rac00n/.npm-global/lib/node_modules/@anthropic-ai/claude-code/vendor/ripgrep/x64-linux/rg -n \"Dashboard\" /mnt/c/Users/Administrator/Documents/GitHub/v2-Docker/v2_adminpanel/templates/resources.html)",
       "Bash(/home/rac00n/.npm-global/lib/node_modules/@anthropic-ai/claude-code/vendor/ripgrep/x64-linux/rg -n \"Dashboard\" /mnt/c/Users/Administrator/Documents/GitHub/v2-Docker/v2_adminpanel/templates/profile.html /mnt/c/Users/Administrator/Documents/GitHub/v2-Docker/v2_adminpanel/templates/resource_metrics.html)",
-      "Bash(/home/rac00n/.npm-global/lib/node_modules/@anthropic-ai/claude-code/vendor/ripgrep/x64-linux/rg -n \"BACKUP|LOGIN_2FA_SUCCESS\" /mnt/c/Users/Administrator/Documents/GitHub/v2-Docker/v2_adminpanel/app.py)"
+      "Bash(/home/rac00n/.npm-global/lib/node_modules/@anthropic-ai/claude-code/vendor/ripgrep/x64-linux/rg -n \"BACKUP|LOGIN_2FA_SUCCESS\" /mnt/c/Users/Administrator/Documents/GitHub/v2-Docker/v2_adminpanel/app.py)",
+      "Bash(sed:*)"
     ],
     "deny": []
   }

JOURNAL.md

@@ -1,5 +1,49 @@
 # v2-Docker Projekt Journal
 
+## Letzte Änderungen (06.01.2025)
+
+### Gerätelimit-Feature implementiert
+- **Datenbank-Schema erweitert**:
+  - Neue Spalte `device_limit` in `licenses` Tabelle (Standard: 3, Range: 1-10)
+  - Neue Tabelle `device_registrations` für Hardware-ID Tracking
+  - Indizes für Performance-Optimierung hinzugefügt
+  
+- **UI-Anpassungen**:
+  - Einzellizenz-Formular: Dropdown für Gerätelimit (1-10 Geräte)
+  - Batch-Formular: Gerätelimit pro Lizenz auswählbar
+  - Lizenz-Bearbeitung: Gerätelimit änderbar
+  - Lizenz-Anzeige: Zeigt aktive Geräte (z.B. "💻 2/3")
+  
+- **Backend-Änderungen**:
+  - Lizenz-Erstellung speichert device_limit
+  - Batch-Erstellung berücksichtigt device_limit
+  - Lizenz-Update kann device_limit ändern
+  - API-Endpoints liefern Geräteinformationen
+  
+- **Migration**:
+  - Skript `migrate_device_limit.sql` erstellt
+  - Setzt device_limit = 3 für alle bestehenden Lizenzen
+
+### Vollständig implementiert:
+✅ Device Management UI (Geräte pro Lizenz anzeigen/verwalten)
+✅ Device Validation Logic (Prüfung bei Geräte-Registrierung)
+✅ API-Endpoints für Geräte-Registrierung/Deregistrierung
+
+### API-Endpoints:
+- `GET /api/license/<id>/devices` - Listet alle Geräte einer Lizenz
+- `POST /api/license/<id>/register-device` - Registriert ein neues Gerät
+- `POST /api/license/<id>/deactivate-device/<device_id>` - Deaktiviert ein Gerät
+
+### Features:
+- Geräte-Registrierung mit Hardware-ID Validierung
+- Automatische Prüfung des Gerätelimits
+- Reaktivierung deaktivierter Geräte möglich
+- Geräte-Verwaltung UI mit Modal-Dialog
+- Anzeige von Gerätename, OS, IP, Registrierungsdatum
+- Admin kann Geräte manuell deaktivieren
+
+---
+
 ## Projektübersicht
 Lizenzmanagement-System für Social Media Account-Erstellungssoftware mit Docker-basierter Architektur.
 

v2_adminpanel/app.py

@@ -1485,6 +1485,7 @@ def create_license():
         domain_count = int(request.form.get("domain_count", 1))
         ipv4_count = int(request.form.get("ipv4_count", 1))
         phone_count = int(request.form.get("phone_count", 1))
+        device_limit = int(request.form.get("device_limit", 3))
 
         conn = get_connection()
         cur = conn.cursor()
@@ -1536,11 +1537,11 @@ def create_license():
             # Lizenz hinzufügen
             cur.execute("""
                 INSERT INTO licenses (license_key, customer_id, license_type, valid_from, valid_until, is_active, 
-                                    domain_count, ipv4_count, phone_count, is_test)
+                                    domain_count, ipv4_count, phone_count, device_limit, is_test)
-                VALUES (%s, %s, %s, %s, %s, TRUE, %s, %s, %s, %s)
+                VALUES (%s, %s, %s, %s, %s, TRUE, %s, %s, %s, %s, %s)
                 RETURNING id
             """, (license_key, customer_id, license_type, valid_from, valid_until, 
-                  domain_count, ipv4_count, phone_count, is_test))
+                  domain_count, ipv4_count, phone_count, device_limit, is_test))
             license_id = cur.fetchone()[0]
             
             # Ressourcen zuweisen
@@ -1652,6 +1653,7 @@ def create_license():
                          'license_type': license_type,
                          'valid_from': valid_from,
                          'valid_until': valid_until,
+                         'device_limit': device_limit,
                          'is_test': is_test
                      })
             
@@ -1711,6 +1713,7 @@ def batch_licenses():
         domain_count = int(request.form.get("domain_count", 1))
         ipv4_count = int(request.form.get("ipv4_count", 1))
         phone_count = int(request.form.get("phone_count", 1))
+        device_limit = int(request.form.get("device_limit", 3))
         
         # Sicherheitslimit
         if quantity < 1 or quantity > 100:
@@ -1803,11 +1806,11 @@ def batch_licenses():
                 cur.execute("""
                     INSERT INTO licenses (license_key, customer_id, license_type, is_test, 
                                         valid_from, valid_until, is_active,
-                                        domain_count, ipv4_count, phone_count)
+                                        domain_count, ipv4_count, phone_count, device_limit)
-                    VALUES (%s, %s, %s, %s, %s, %s, true, %s, %s, %s)
+                    VALUES (%s, %s, %s, %s, %s, %s, true, %s, %s, %s, %s)
                     RETURNING id
                 """, (license_key, customer_id, license_type, is_test, valid_from, valid_until,
-                      domain_count, ipv4_count, phone_count))
+                      domain_count, ipv4_count, phone_count, device_limit))
                 license_id = cur.fetchone()[0]
                 
                 # Ressourcen für diese Lizenz zuweisen
@@ -1983,7 +1986,7 @@ def edit_license(license_id):
     if request.method == "POST":
         # Alte Werte für Audit-Log abrufen
         cur.execute("""
-            SELECT license_key, license_type, valid_from, valid_until, is_active, is_test 
+            SELECT license_key, license_type, valid_from, valid_until, is_active, is_test, device_limit 
             FROM licenses WHERE id = %s
         """, (license_id,))
         old_license = cur.fetchone()
@@ -1995,13 +1998,14 @@ def edit_license(license_id):
         valid_until = request.form["valid_until"]
         is_active = request.form.get("is_active") == "on"
         is_test = request.form.get("is_test") == "on"
+        device_limit = int(request.form.get("device_limit", 3))
         
         cur.execute("""
             UPDATE licenses 
             SET license_key = %s, license_type = %s, valid_from = %s, 
-                valid_until = %s, is_active = %s, is_test = %s
+                valid_until = %s, is_active = %s, is_test = %s, device_limit = %s
             WHERE id = %s
-        """, (license_key, license_type, valid_from, valid_until, is_active, is_test, license_id))
+        """, (license_key, license_type, valid_from, valid_until, is_active, is_test, device_limit, license_id))
         
         conn.commit()
         
@@ -2013,7 +2017,8 @@ def edit_license(license_id):
                      'valid_from': str(old_license[2]),
                      'valid_until': str(old_license[3]),
                      'is_active': old_license[4],
-                     'is_test': old_license[5]
+                     'is_test': old_license[5],
+                     'device_limit': old_license[6]
                  },
                  new_values={
                      'license_key': license_key,
@@ -2021,7 +2026,8 @@ def edit_license(license_id):
                      'valid_from': valid_from,
                      'valid_until': valid_until,
                      'is_active': is_active,
-                     'is_test': is_test
+                     'is_test': is_test,
+                     'device_limit': device_limit
                  })
         
         cur.close()
@@ -2048,7 +2054,7 @@ def edit_license(license_id):
     # Get license data
     cur.execute("""
         SELECT l.id, l.license_key, c.name, c.email, l.license_type, 
-               l.valid_from, l.valid_until, l.is_active, c.id, l.is_test
+               l.valid_from, l.valid_until, l.is_active, c.id, l.is_test, l.device_limit
         FROM licenses l
         JOIN customers c ON l.customer_id = c.id
         WHERE l.id = %s
@@ -2343,7 +2349,9 @@ def customers_licenses():
                     END as status,
                     l.domain_count,
                     l.ipv4_count,
-                    l.phone_count
+                    l.phone_count,
+                    l.device_limit,
+                    (SELECT COUNT(*) FROM device_registrations WHERE license_id = l.id AND is_active = TRUE) as active_devices
                 FROM licenses l
                 WHERE l.customer_id = %s
                 ORDER BY l.created_at DESC, l.id DESC
@@ -2384,7 +2392,9 @@ def api_customer_licenses(customer_id):
             END as status,
             l.domain_count,
             l.ipv4_count,
-            l.phone_count
+            l.phone_count,
+            l.device_limit,
+            (SELECT COUNT(*) FROM device_registrations WHERE license_id = l.id AND is_active = TRUE) as active_devices
         FROM licenses l
         WHERE l.customer_id = %s
         ORDER BY l.created_at DESC, l.id DESC
@@ -2434,6 +2444,8 @@ def api_customer_licenses(customer_id):
             'domain_count': row[7],
             'ipv4_count': row[8],
             'phone_count': row[9],
+            'device_limit': row[10],
+            'active_devices': row[11],
             'resources': resources
         })
     
@@ -3711,6 +3723,218 @@ def bulk_deactivate_licenses():
     except Exception as e:
         return jsonify({'success': False, 'message': str(e)}), 500
 
+@app.route("/api/license/<int:license_id>/devices")
+@login_required
+def get_license_devices(license_id):
+    """Hole alle registrierten Geräte einer Lizenz"""
+    try:
+        conn = get_connection()
+        cur = conn.cursor()
+        
+        # Prüfe ob Lizenz existiert und hole device_limit
+        cur.execute("""
+            SELECT device_limit FROM licenses WHERE id = %s
+        """, (license_id,))
+        license_data = cur.fetchone()
+        
+        if not license_data:
+            return jsonify({'success': False, 'message': 'Lizenz nicht gefunden'}), 404
+        
+        device_limit = license_data[0]
+        
+        # Hole alle Geräte für diese Lizenz
+        cur.execute("""
+            SELECT id, hardware_id, device_name, operating_system,
+                   first_seen, last_seen, is_active, ip_address
+            FROM device_registrations
+            WHERE license_id = %s
+            ORDER BY is_active DESC, last_seen DESC
+        """, (license_id,))
+        
+        devices = []
+        for row in cur.fetchall():
+            devices.append({
+                'id': row[0],
+                'hardware_id': row[1],
+                'device_name': row[2] or 'Unbekanntes Gerät',
+                'operating_system': row[3] or 'Unbekannt',
+                'first_seen': row[4].strftime('%d.%m.%Y %H:%M') if row[4] else '',
+                'last_seen': row[5].strftime('%d.%m.%Y %H:%M') if row[5] else '',
+                'is_active': row[6],
+                'ip_address': row[7] or '-'
+            })
+        
+        cur.close()
+        conn.close()
+        
+        return jsonify({
+            'success': True,
+            'devices': devices,
+            'device_limit': device_limit,
+            'active_count': sum(1 for d in devices if d['is_active'])
+        })
+        
+    except Exception as e:
+        logging.error(f"Fehler beim Abrufen der Geräte: {str(e)}")
+        return jsonify({'success': False, 'message': 'Fehler beim Abrufen der Geräte'}), 500
+
+@app.route("/api/license/<int:license_id>/register-device", methods=["POST"])
+def register_device(license_id):
+    """Registriere ein neues Gerät für eine Lizenz"""
+    try:
+        data = request.get_json()
+        hardware_id = data.get('hardware_id')
+        device_name = data.get('device_name', '')
+        operating_system = data.get('operating_system', '')
+        
+        if not hardware_id:
+            return jsonify({'success': False, 'message': 'Hardware-ID fehlt'}), 400
+        
+        conn = get_connection()
+        cur = conn.cursor()
+        
+        # Prüfe ob Lizenz existiert und aktiv ist
+        cur.execute("""
+            SELECT device_limit, is_active, valid_until
+            FROM licenses 
+            WHERE id = %s
+        """, (license_id,))
+        license_data = cur.fetchone()
+        
+        if not license_data:
+            return jsonify({'success': False, 'message': 'Lizenz nicht gefunden'}), 404
+        
+        device_limit, is_active, valid_until = license_data
+        
+        # Prüfe ob Lizenz aktiv und gültig ist
+        if not is_active:
+            return jsonify({'success': False, 'message': 'Lizenz ist deaktiviert'}), 403
+        
+        if valid_until < datetime.now(ZoneInfo("Europe/Berlin")).date():
+            return jsonify({'success': False, 'message': 'Lizenz ist abgelaufen'}), 403
+        
+        # Prüfe ob Gerät bereits registriert ist
+        cur.execute("""
+            SELECT id, is_active FROM device_registrations
+            WHERE license_id = %s AND hardware_id = %s
+        """, (license_id, hardware_id))
+        existing_device = cur.fetchone()
+        
+        if existing_device:
+            device_id, is_device_active = existing_device
+            if is_device_active:
+                # Gerät ist bereits aktiv, update last_seen
+                cur.execute("""
+                    UPDATE device_registrations
+                    SET last_seen = CURRENT_TIMESTAMP,
+                        ip_address = %s,
+                        user_agent = %s
+                    WHERE id = %s
+                """, (get_client_ip(), request.headers.get('User-Agent', ''), device_id))
+                conn.commit()
+                return jsonify({'success': True, 'message': 'Gerät bereits registriert', 'device_id': device_id})
+            else:
+                # Gerät war deaktiviert, prüfe ob wir es reaktivieren können
+                cur.execute("""
+                    SELECT COUNT(*) FROM device_registrations
+                    WHERE license_id = %s AND is_active = TRUE
+                """, (license_id,))
+                active_count = cur.fetchone()[0]
+                
+                if active_count >= device_limit:
+                    return jsonify({'success': False, 'message': f'Gerätelimit erreicht ({device_limit} Geräte)'}), 403
+                
+                # Reaktiviere das Gerät
+                cur.execute("""
+                    UPDATE device_registrations
+                    SET is_active = TRUE,
+                        last_seen = CURRENT_TIMESTAMP,
+                        deactivated_at = NULL,
+                        deactivated_by = NULL,
+                        ip_address = %s,
+                        user_agent = %s
+                    WHERE id = %s
+                """, (get_client_ip(), request.headers.get('User-Agent', ''), device_id))
+                conn.commit()
+                return jsonify({'success': True, 'message': 'Gerät reaktiviert', 'device_id': device_id})
+        
+        # Neues Gerät - prüfe Gerätelimit
+        cur.execute("""
+            SELECT COUNT(*) FROM device_registrations
+            WHERE license_id = %s AND is_active = TRUE
+        """, (license_id,))
+        active_count = cur.fetchone()[0]
+        
+        if active_count >= device_limit:
+            return jsonify({'success': False, 'message': f'Gerätelimit erreicht ({device_limit} Geräte)'}), 403
+        
+        # Registriere neues Gerät
+        cur.execute("""
+            INSERT INTO device_registrations 
+            (license_id, hardware_id, device_name, operating_system, ip_address, user_agent)
+            VALUES (%s, %s, %s, %s, %s, %s)
+            RETURNING id
+        """, (license_id, hardware_id, device_name, operating_system, 
+              get_client_ip(), request.headers.get('User-Agent', '')))
+        device_id = cur.fetchone()[0]
+        
+        conn.commit()
+        
+        # Audit Log
+        log_audit('DEVICE_REGISTER', 'device', device_id,
+                 new_values={'license_id': license_id, 'hardware_id': hardware_id})
+        
+        cur.close()
+        conn.close()
+        
+        return jsonify({'success': True, 'message': 'Gerät erfolgreich registriert', 'device_id': device_id})
+        
+    except Exception as e:
+        logging.error(f"Fehler bei Geräte-Registrierung: {str(e)}")
+        return jsonify({'success': False, 'message': 'Fehler bei der Registrierung'}), 500
+
+@app.route("/api/license/<int:license_id>/deactivate-device/<int:device_id>", methods=["POST"])
+@login_required
+def deactivate_device(license_id, device_id):
+    """Deaktiviere ein registriertes Gerät"""
+    try:
+        conn = get_connection()
+        cur = conn.cursor()
+        
+        # Prüfe ob das Gerät zu dieser Lizenz gehört
+        cur.execute("""
+            SELECT id FROM device_registrations
+            WHERE id = %s AND license_id = %s AND is_active = TRUE
+        """, (device_id, license_id))
+        
+        if not cur.fetchone():
+            return jsonify({'success': False, 'message': 'Gerät nicht gefunden oder bereits deaktiviert'}), 404
+        
+        # Deaktiviere das Gerät
+        cur.execute("""
+            UPDATE device_registrations
+            SET is_active = FALSE,
+                deactivated_at = CURRENT_TIMESTAMP,
+                deactivated_by = %s
+            WHERE id = %s
+        """, (session['username'], device_id))
+        
+        conn.commit()
+        
+        # Audit Log
+        log_audit('DEVICE_DEACTIVATE', 'device', device_id,
+                 old_values={'is_active': True},
+                 new_values={'is_active': False})
+        
+        cur.close()
+        conn.close()
+        
+        return jsonify({'success': True, 'message': 'Gerät erfolgreich deaktiviert'})
+        
+    except Exception as e:
+        logging.error(f"Fehler beim Deaktivieren des Geräts: {str(e)}")
+        return jsonify({'success': False, 'message': 'Fehler beim Deaktivieren'}), 500
+
 @app.route("/api/licenses/bulk-delete", methods=["POST"])
 @login_required
 def bulk_delete_licenses():

v2_adminpanel/init.sql

@@ -173,6 +173,38 @@ BEGIN
     END IF;
 END $$;
 
+-- Erweiterung der licenses Tabelle um device_limit
+DO $$ 
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM information_schema.columns 
+                   WHERE table_name = 'licenses' AND column_name = 'device_limit') THEN
+        ALTER TABLE licenses 
+        ADD COLUMN device_limit INTEGER DEFAULT 3 CHECK (device_limit >= 1 AND device_limit <= 10);
+    END IF;
+END $$;
+
+-- Tabelle für Geräte-Registrierungen
+CREATE TABLE IF NOT EXISTS device_registrations (
+    id SERIAL PRIMARY KEY,
+    license_id INTEGER REFERENCES licenses(id) ON DELETE CASCADE,
+    hardware_id TEXT NOT NULL,
+    device_name TEXT,
+    operating_system TEXT,
+    first_seen TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    last_seen TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    is_active BOOLEAN DEFAULT TRUE,
+    deactivated_at TIMESTAMP WITH TIME ZONE,
+    deactivated_by TEXT,
+    ip_address TEXT,
+    user_agent TEXT,
+    UNIQUE(license_id, hardware_id)
+);
+
+-- Indizes für device_registrations
+CREATE INDEX IF NOT EXISTS idx_device_license ON device_registrations(license_id);
+CREATE INDEX IF NOT EXISTS idx_device_hardware ON device_registrations(hardware_id);
+CREATE INDEX IF NOT EXISTS idx_device_active ON device_registrations(license_id, is_active) WHERE is_active = TRUE;
+
 -- Indizes für Performance
 CREATE INDEX IF NOT EXISTS idx_resource_status ON resource_pools(status);
 CREATE INDEX IF NOT EXISTS idx_resource_type_status ON resource_pools(resource_type, status);

v2_adminpanel/migrate_device_limit.sql

@@ -0,0 +1,13 @@
+-- Migration: Setze device_limit für bestehende Test-Lizenzen auf 3
+-- Dieses Script wird nur einmal ausgeführt, um bestehende Lizenzen zu aktualisieren
+
+-- Setze device_limit = 3 für alle bestehenden Lizenzen, die noch keinen Wert haben
+UPDATE licenses 
+SET device_limit = 3
+WHERE device_limit IS NULL;
+
+-- Bestätige die Änderung
+SELECT COUNT(*) as updated_licenses, 
+       COUNT(CASE WHEN is_test = TRUE THEN 1 END) as test_licenses_updated
+FROM licenses 
+WHERE device_limit = 3;

v2_adminpanel/templates/batch_form.html

@@ -147,6 +147,32 @@
             </div>
         </div>
 
+        <!-- Device Limit -->
+        <div class="card mt-4">
+            <div class="card-header">
+                <h5 class="mb-0">
+                    <i class="fas fa-laptop"></i> Gerätelimit pro Lizenz
+                </h5>
+            </div>
+            <div class="card-body">
+                <div class="row">
+                    <div class="col-md-6">
+                        <label for="deviceLimit" class="form-label">
+                            Maximale Anzahl Geräte pro Lizenz
+                        </label>
+                        <select class="form-select" id="deviceLimit" name="device_limit" required>
+                            {% for i in range(1, 11) %}
+                            <option value="{{ i }}" {% if i == 3 %}selected{% endif %}>{{ i }} {% if i == 1 %}Gerät{% else %}Geräte{% endif %}</option>
+                            {% endfor %}
+                        </select>
+                        <small class="form-text text-muted">
+                            Jede generierte Lizenz kann auf maximal dieser Anzahl von Geräten gleichzeitig aktiviert werden.
+                        </small>
+                    </div>
+                </div>
+            </div>
+        </div>
+
         <!-- Test Data Checkbox -->
         <div class="form-check mt-3">
             <input class="form-check-input" type="checkbox" id="isTest" name="is_test">

v2_adminpanel/templates/customers_licenses.html

@@ -168,18 +168,24 @@
                                                         </div>
                                                     {% endif %}
                                                     {% if license[9] > 0 %}
-                                                        <div class="d-inline-block" data-bs-toggle="tooltip" title="Telefonnummern">
+                                                        <div class="d-inline-block me-2" data-bs-toggle="tooltip" title="Telefonnummern">
                                                             📱 {{ license[9] }}
                                                         </div>
                                                     {% endif %}
+                                                    <div class="d-inline-block" data-bs-toggle="tooltip" title="Geräte">
+                                                        💻 {{ license[11] }}/{{ license[10] }}
+                                                    </div>
                                                 </div>
                                             </td>
                                             <td>
                                                 <div class="btn-group btn-group-sm">
-                                                    <button class="btn btn-outline-primary" onclick="toggleLicenseStatus({{ license[0] }}, {{ license[5] }})">
+                                                    <button class="btn btn-outline-primary" onclick="toggleLicenseStatus({{ license[0] }}, {{ license[5] }})" title="Aktivieren/Deaktivieren">
                                                         <i class="bi bi-power"></i>
                                                     </button>
-                                                    <a href="/license/edit/{{ license[0] }}{% if request.args.get('show_test') %}?ref=customers-licenses&show_test=true{% endif %}" class="btn btn-outline-secondary">
+                                                    <button class="btn btn-outline-info" onclick="showDeviceManagement({{ license[0] }})" title="Geräte verwalten">
+                                                        <i class="bi bi-laptop"></i>
+                                                    </button>
+                                                    <a href="/license/edit/{{ license[0] }}{% if request.args.get('show_test') %}?ref=customers-licenses&show_test=true{% endif %}" class="btn btn-outline-secondary" title="Bearbeiten">
                                                         <i class="bi bi-pencil"></i>
                                                     </a>
                                                 </div>
@@ -253,6 +259,28 @@
     </div>
 </div>
 
+<!-- Modal für Geräte-Verwaltung -->
+<div class="modal fade" id="deviceManagementModal" tabindex="-1">
+    <div class="modal-dialog modal-lg">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title">Geräte verwalten</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+            </div>
+            <div class="modal-body" id="deviceManagementContent">
+                <div class="text-center">
+                    <div class="spinner-border text-primary" role="status">
+                        <span class="visually-hidden">Lädt...</span>
+                    </div>
+                </div>
+            </div>
+            <div class="modal-footer">
+                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Schließen</button>
+            </div>
+        </div>
+    </div>
+</div>
+
 <style>
 .customer-item {
     transition: all 0.2s ease;
@@ -433,6 +461,11 @@ function updateLicenseView(customerId, licenses) {
             }
         }
         
+        // Geräte-Anzeige hinzufügen
+        resourcesHtml += `<div class="resource-group">
+            <span class="resource-icon" data-bs-toggle="tooltip" title="Geräte">💻 ${license.active_devices}/${license.device_limit}</span>
+        </div>`;
+        
         html += `
             <tr data-license-id="${license.id}">
                 <td>
@@ -453,7 +486,10 @@ function updateLicenseView(customerId, licenses) {
                         <button class="btn btn-outline-primary" onclick="toggleLicenseStatus(${license.id}, ${license.is_active})" title="Status ändern">
                             <i class="bi bi-power"></i>
                         </button>
-                        <button class="btn btn-outline-info" onclick="showResourceManagement(${license.id})" title="Ressourcen verwalten">
+                        <button class="btn btn-outline-info" onclick="showDeviceManagement(${license.id})" title="Geräte verwalten">
+                            <i class="bi bi-laptop"></i>
+                        </button>
+                        <button class="btn btn-outline-secondary" onclick="showResourceManagement(${license.id})" title="Ressourcen verwalten">
                             <i class="bi bi-gear"></i>
                         </button>
                         <a href="/license/edit/${license.id}${window.location.search ? '?ref=customers-licenses&' + window.location.search.substring(1) : ''}" class="btn btn-outline-secondary" title="Bearbeiten">
@@ -774,5 +810,124 @@ function quarantineResource(resourceId, resourceValue) {
 function saveResourceChanges() {
     alert('Diese Funktion wird noch implementiert');
 }
+
+// Geräte-Verwaltung anzeigen
+function showDeviceManagement(licenseId) {
+    const modal = new bootstrap.Modal(document.getElementById('deviceManagementModal'));
+    modal.show();
+    
+    // Lade Geräte-Daten
+    fetch(`/api/license/${licenseId}/devices`)
+        .then(response => response.json())
+        .then(data => {
+            if (data.success) {
+                let content = `
+                    <div class="mb-3">
+                        <div class="alert alert-info">
+                            <strong>Gerätelimit:</strong> ${data.active_count} von ${data.device_limit} Geräten aktiv
+                        </div>
+                    </div>`;
+                
+                if (data.devices.length === 0) {
+                    content += `
+                        <div class="text-center py-4">
+                            <i class="bi bi-laptop text-muted" style="font-size: 3rem;"></i>
+                            <p class="text-muted mt-3">Noch keine Geräte registriert</p>
+                        </div>`;
+                } else {
+                    content += `
+                        <div class="table-responsive">
+                            <table class="table table-hover">
+                                <thead>
+                                    <tr>
+                                        <th>Gerätename</th>
+                                        <th>Hardware-ID</th>
+                                        <th>Betriebssystem</th>
+                                        <th>Erste Registrierung</th>
+                                        <th>Letzte Aktivität</th>
+                                        <th>IP-Adresse</th>
+                                        <th>Status</th>
+                                        <th>Aktionen</th>
+                                    </tr>
+                                </thead>
+                                <tbody>`;
+                    
+                    data.devices.forEach(device => {
+                        const statusBadge = device.is_active 
+                            ? '<span class="badge bg-success">Aktiv</span>'
+                            : '<span class="badge bg-secondary">Deaktiviert</span>';
+                        
+                        const actionButton = device.is_active
+                            ? `<button class="btn btn-sm btn-danger" onclick="deactivateDevice(${licenseId}, ${device.id}, '${device.device_name}')">
+                                   <i class="bi bi-x-circle"></i> Deaktivieren
+                               </button>`
+                            : '<span class="text-muted">-</span>';
+                        
+                        content += `
+                            <tr>
+                                <td>${device.device_name}</td>
+                                <td><small class="text-muted">${device.hardware_id.substring(0, 12)}...</small></td>
+                                <td>${device.operating_system}</td>
+                                <td>${device.first_seen}</td>
+                                <td>${device.last_seen}</td>
+                                <td>${device.ip_address}</td>
+                                <td>${statusBadge}</td>
+                                <td>${actionButton}</td>
+                            </tr>`;
+                    });
+                    
+                    content += `
+                                </tbody>
+                            </table>
+                        </div>`;
+                }
+                
+                document.getElementById('deviceManagementContent').innerHTML = content;
+            } else {
+                document.getElementById('deviceManagementContent').innerHTML = `
+                    <div class="alert alert-danger">
+                        <i class="bi bi-exclamation-triangle"></i> ${data.message || 'Fehler beim Laden der Geräte'}
+                    </div>`;
+            }
+        })
+        .catch(error => {
+            console.error('Error loading devices:', error);
+            document.getElementById('deviceManagementContent').innerHTML = `
+                <div class="alert alert-danger">
+                    <i class="bi bi-exclamation-triangle"></i> Fehler beim Laden der Geräte
+                </div>`;
+        });
+}
+
+// Gerät deaktivieren
+function deactivateDevice(licenseId, deviceId, deviceName) {
+    if (!confirm(`Möchten Sie das Gerät "${deviceName}" wirklich deaktivieren?`)) {
+        return;
+    }
+    
+    fetch(`/api/license/${licenseId}/deactivate-device/${deviceId}`, {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json',
+        }
+    })
+    .then(response => response.json())
+    .then(data => {
+        if (data.success) {
+            // Aktualisiere die Geräte-Ansicht
+            showDeviceManagement(licenseId);
+            // Aktualisiere die Lizenz-Anzeige wenn möglich
+            if (typeof loadCustomerLicenses === 'function' && currentCustomerId) {
+                loadCustomerLicenses(currentCustomerId);
+            }
+        } else {
+            alert(data.message || 'Fehler beim Deaktivieren des Geräts');
+        }
+    })
+    .catch(error => {
+        console.error('Error deactivating device:', error);
+        alert('Fehler beim Deaktivieren des Geräts');
+    });
+}
 </script>
 {% endblock %}

v2_adminpanel/templates/edit_license.html

@@ -54,6 +54,15 @@
                             </label>
                         </div>
                     </div>
+                    <div class="col-md-6">
+                        <label for="deviceLimit" class="form-label">Gerätelimit</label>
+                        <select class="form-select" id="deviceLimit" name="device_limit" required>
+                            {% for i in range(1, 11) %}
+                            <option value="{{ i }}" {% if license[10] == i %}selected{% endif %}>{{ i }} {% if i == 1 %}Gerät{% else %}Geräte{% endif %}</option>
+                            {% endfor %}
+                        </select>
+                        <small class="form-text text-muted">Maximale Anzahl gleichzeitig aktiver Geräte</small>
+                    </div>
                 </div>
 
                 <div class="form-check mt-3">

v2_adminpanel/templates/index.html

@@ -126,6 +126,32 @@
             </div>
         </div>
 
+        <!-- Device Limit -->
+        <div class="card mt-4">
+            <div class="card-header">
+                <h5 class="mb-0">
+                    <i class="fas fa-laptop"></i> Gerätelimit
+                </h5>
+            </div>
+            <div class="card-body">
+                <div class="row">
+                    <div class="col-md-6">
+                        <label for="deviceLimit" class="form-label">
+                            Maximale Anzahl Geräte
+                        </label>
+                        <select class="form-select" id="deviceLimit" name="device_limit" required>
+                            {% for i in range(1, 11) %}
+                            <option value="{{ i }}" {% if i == 3 %}selected{% endif %}>{{ i }} {% if i == 1 %}Gerät{% else %}Geräte{% endif %}</option>
+                            {% endfor %}
+                        </select>
+                        <small class="form-text text-muted">
+                            Anzahl der Geräte, auf denen die Lizenz gleichzeitig aktiviert sein kann.
+                        </small>
+                    </div>
+                </div>
+            </div>
+        </div>
+
         <!-- Test Data Checkbox -->
         <div class="form-check mt-3">
             <input class="form-check-input" type="checkbox" id="isTest" name="is_test">