check if running

home.admin/config.scripts/internet.sshtunnel.py

@@ -1,11 +1,39 @@
 #!/usr/bin/python3
 
-import sys
+import sys, subprocess
 
-if len(sys.argv) <= 1 or sys.argv[1] == "-h" or sys.argv[1] == "-help":
+# display config script info
+if len(sys.argv) <= 1 or sys.argv[1] == "-h" or sys.argv[1] == "help":
     print("forward ports from another server to raspiblitz with reverse SSH tunnel")
     print("internet.sshtunnel.py [on|off] [USER]@[SERVER] [INTERNAL-PORT]:[EXTERNAL-PORT]")
     print("note that [INTERNAL-PORT]:[EXTERNAL-PORT] can one or multiple forwardings")
     sys.exit(1)
 
-print ("TODO: implement")
+#
+# SWITCHING ON
+#
+
+if sys.argv[1] == "on":
+
+    # check if already running -> systemctl is-enabled autossh-tunnel.service
+    alreadyRunning = subprocess.check_output(['systemctl','is-enabled','autossh-tunnel.service'],shell=True)
+    if alreadyRunning == "enabled":
+        print("already running - run 'internet.sshtunnel.py off' first")
+        sys.exit(1)
+
+    print ("TODO: Switch ON")
+
+#
+# SWITCHING OFF
+#
+
+elif sys.argv[1] == "off":
+
+    print ("TODO: Switch OFF")
+
+#
+# UNKOWN PARAMETER
+#
+
+else:
+    print ("unkown parameter - use 'internet.sshtunnel.py -h' for help")