ikev2 button is not shown if ipsec command is not found

Author: morpheusthewhite

bin/gui.py

@@ -65,9 +65,10 @@ def __init_protocol__(self):
         self.protocolFrame.udp = Radiobutton(self.protocolFrame, text="UDP", variable=self.connectionProtocol, value=0,
                                              selectcolor=self.background_color)
         self.protocolFrame.udp.pack(side=LEFT)
-        self.protocolFrame.ikev2 = Radiobutton(self.protocolFrame, text='Ikev2/IPsec', variable=self.connectionProtocol,
-                                               value=2, selectcolor=self.background_color)
-        self.protocolFrame.ikev2.pack(side=LEFT)
+        if(IPSEC_EXISTS):
+            self.protocolFrame.ikev2 = Radiobutton(self.protocolFrame, text='Ikev2/IPsec', variable=self.connectionProtocol,
+                                                   value=2, selectcolor=self.background_color)
+            self.protocolFrame.ikev2.pack(side=LEFT)
         self.connectionProtocol.set(1)
 
         self.protocolFrame.pack(pady=4)

bin/vpn_util/ikev2.py

@@ -39,6 +39,17 @@
 
 logger = get_logger(__name__)
 
+def ipsec_exists():
+    """
+    Verifies if ipsec is existing in the os
+    :return: a boolean: True if ipsec exists, false otherwise
+    """
+    (_, err) = Popen(["sudo", "ipsec", "--version"], stdout=PIPE, stderr=PIPE).communicate()
+    if "not found" in err:
+        return False
+
+    return True
+
 
 def __ikev2_save_credentials__(username, password):
     """
@@ -143,7 +154,7 @@ def ikev2_is_running():
     """
 
     args = ['sudo', 'ipsec', 'status']
-    ipsec_stop_command = Popen(args, stdout=PIPE, universal_newlines=True)
+    ipsec_stop_command = Popen(args, stdout=PIPE, stderr=PIPE, universal_newlines=True)
     (out, _) = ipsec_stop_command.communicate()
 
     if 'ESTABLISHED' in out:
@@ -158,7 +169,7 @@ def __ikev2_ipsec_reload__():
     restarts ipsec (used to load saved settings)
     """
     args = ['sudo', 'ipsec', 'reload']
-    (out, _) = Popen(args, stdout=PIPE).communicate()
+    (out, _) = Popen(args, stdout=PIPE, universal_newlines=True).communicate()
 
     if 'not running' in out:
         Popen(['sudo', 'ipsec', 'start']).communicate()

bin/vpn_util/vpn.py

@@ -1,5 +1,6 @@
-from bin.vpn_util.ikev2 import ikev2_connect, ikev2_is_running, ikev2_disconnect
+from bin.vpn_util.ikev2 import ikev2_connect, ikev2_is_running, ikev2_disconnect, ipsec_exists
 from bin.vpn_util.openvpn import *
+IPSEC_EXISTS = ipsec_exists()
 
 
 def startVPN(server, protocol):