adding openvpn.py

main.py

@@ -44,8 +44,10 @@ def getConfig():
 
 def main():
     getConfig()
-    serverProcess = openvpn.server(config, config.ip)
-    client1Process = openvpn.client(config, '10.1.4.2')
+    if config.ip != 'none':
+        serverProcess = openvpn.server(config, config.ip)
+    else:
+        client1Process = openvpn.client(config, '10.1.4.2')
     
 
 if __name__ == "__main__":

openvpn.py

+import subprocess
+
+def openvpn(config, *args):
+    args = ['openvpn',
+        '--dev', 'tap',
+        '--ca', config.ca,
+        '--cert', config.cert,
+        '--key', config.key,
+        '--persist-tun',
+        '--persist-key',
+        '--script-security', '2',
+        '--user', 'nobody',
+        '--group', 'nogroup',
+        '--verb', config.verbose
+        ] + list(args)
+    return subprocess.Popen(args)
+
+# TODO : set iface up when creating a server/client
+# ! check working directory before launching up script ?
+
+def server(config, ip):
+    return openvpn(config,
+        '--tls-server',
+        '--keepalive', '10', '60',
+        '--mode', 'server',
+        '--duplicate-cn',
+        '--up', 'up-server ' + ip,
+        '--dh', config.dh)
+
+def client(config, serverIp):
+    return openvpn(config,
+            '--nobind',
+            '--tls-client',
+            '--remote', serverIp,
+            '--up', 'up-client')
+