new calculation approach with unique sessions, new API endpoint to get list of active sessions, fix for UNDEF user, UI and Back to support certificate management still under development

APP/service_manager.py

@@ -0,0 +1,70 @@
+import subprocess
+import logging
+import shutil
+
+logger = logging.getLogger(__name__)
+
+class ServiceManager:
+    def __init__(self, service_name='openvpn'):
+        self.service_name = service_name
+        self.init_system = self._detect_init_system()
+        
+    def _detect_init_system(self):
+        """Detect if systemd or openrc is used."""
+        if shutil.which('systemctl'):
+            return 'systemd'
+        elif shutil.which('rc-service'):
+            return 'openrc'
+        else:
+            return 'unknown'
+
+    def _run_cmd(self, cmd):
+        try:
+            subprocess.run(cmd, check=True, capture_output=True, text=True)
+            return True, "Success"
+        except subprocess.CalledProcessError as e:
+            return False, e.stderr.strip()
+        except Exception as e:
+            return False, str(e)
+
+    def start(self):
+        if self.init_system == 'systemd':
+            return self._run_cmd(['sudo', 'systemctl', 'start', self.service_name])
+        elif self.init_system == 'openrc':
+            return self._run_cmd(['sudo', 'rc-service', self.service_name, 'start'])
+        return False, "Unknown init system"
+
+    def stop(self):
+        if self.init_system == 'systemd':
+            return self._run_cmd(['sudo', 'systemctl', 'stop', self.service_name])
+        elif self.init_system == 'openrc':
+            return self._run_cmd(['sudo', 'rc-service', self.service_name, 'stop'])
+        return False, "Unknown init system"
+
+    def restart(self):
+        if self.init_system == 'systemd':
+            return self._run_cmd(['sudo', 'systemctl', 'restart', self.service_name])
+        elif self.init_system == 'openrc':
+            return self._run_cmd(['sudo', 'rc-service', self.service_name, 'restart'])
+        return False, "Unknown init system"
+
+    def get_status(self):
+        """Return 'active', 'inactive', or 'error'"""
+        if self.init_system == 'systemd':
+            # systemctl is-active returns 0 if active, non-zero otherwise
+            try:
+                subprocess.run(['systemctl', 'is-active', self.service_name], check=True, capture_output=True)
+                return 'active'
+            except subprocess.CalledProcessError:
+                return 'inactive'
+                
+        elif self.init_system == 'openrc':
+            try:
+                res = subprocess.run(['rc-service', self.service_name, 'status'], capture_output=True, text=True)
+                if 'started' in res.stdout or 'running' in res.stdout:
+                    return 'active'
+                return 'inactive'
+            except:
+                return 'error'
+                
+        return 'unknown'