Move port forwarding scripts into provider folders, unify call and fix export syntax of environment variables

openvpn/persistEnvironment.py

@@ -37,7 +37,7 @@ for env_var in os.environ:
 with open(args.env_var_script_file, 'w') as script_file:
     for var_name, var_value in variables_to_persist.items():
         script_file.write(
-            'export {env_var} = {env_var_value}\n'.format(
+            'export {env_var}={env_var_value}\n'.format(
                 env_var=var_name,
                 env_var_value=var_value,
             ),

transmission/start.sh

@@ -1,8 +1,5 @@
 #!/bin/bash
 
-# Fail script on errors
-set -e
-
 # Source our persisted env variables from container startup
 . /etc/transmission/environment-variables.sh
 
@@ -72,20 +69,11 @@ fi
 echo "STARTING TRANSMISSION"
 exec su --preserve-environment ${RUN_AS} -s /bin/bash -c "/usr/bin/transmission-daemon -g ${TRANSMISSION_HOME} --logfile $LOGFILE" &
 
-if [[ "${OPENVPN_PROVIDER^^}" = "PIA" ]]
-then
-    echo "CONFIGURING PORT FORWARDING"
-    exec /etc/transmission/updatePort.sh &
-elif [[ "${OPENVPN_PROVIDER^^}" = "PERFECTPRIVACY" ]]
-then
-    echo "CONFIGURING PORT FORWARDING"
-    exec /etc/transmission/updatePPPort.sh ${TRANSMISSION_BIND_ADDRESS_IPV4} &
-elif [[ "${OPENVPN_PROVIDER^^}" = "PRIVATEVPN" ]]
-then
-    echo "CONFIGURING PORT FORWARDING"
-    exec /etc/transmission/updatePrivateVPNPort.sh &
-else
-    echo "NO PORT UPDATER FOR THIS PROVIDER"
+# Configure port forwarding if applicable
+if [[ -x /etc/openvpn/${OPENVPN_PROVIDER,,}/update-port.sh && -z $DISABLE_PORT_UPDATER ]]; then
+    echo "Provider ${OPENVPN_PROVIDER^^} has a script for automatic port forwarding. Will run it now."
+    echo "If you want to disable this, set environment variable DISABLE_PORT_UPDATER=yes"
+    exec /etc/openvpn/${OPENVPN_PROVIDER,,}/update-port.sh &
 fi
 
 # If transmission-post-start.sh exists, run it