Merge pull request #119 from rudijs/fragment-option

Add openvpn.conf gerneration -f fragment directive option

Author: kylemanna

bin/ovpn_genconfig

@@ -51,6 +51,7 @@ usage() {
     echo " -a    Authenticate  packets with HMAC using the given message digest algorithm (auth)."
     echo " -z    Enable comp-lzo compression."
     echo " -2    Enable two factor authentication using Google Authenticator."
+    echo " -f    Set the fragment directive."
 }
 
 if [ "$DEBUG" == "1" ]; then
@@ -80,7 +81,7 @@ OVPN_AUTH=''
 [ -r "$OVPN_ENV" ] && source "$OVPN_ENV"
 
 # Parse arguments
-while getopts ":a:C:T:r:s:du:cp:n:DNm:tz2" opt; do
+while getopts ":a:C:T:r:s:du:cp:n:DNmf:tz2" opt; do
     case $opt in
         a)
             OVPN_AUTH="$OPTARG"
@@ -130,6 +131,9 @@ while getopts ":a:C:T:r:s:du:cp:n:DNm:tz2" opt; do
         2)
             OVPN_OTP_AUTH=1
             ;;
+        f)
+            OVPN_FRAGMENT=$OPTARG
+            ;;
         \?)
             set +x
             echo "Invalid option: -$OPTARG" >&2
@@ -177,6 +181,7 @@ export OVPN_CLIENT_TO_CLIENT OVPN_PUSH OVPN_NAT OVPN_DNS OVPN_MTU OVPN_DEVICE
 export OVPN_TLS_CIPHER OVPN_CIPHER OVPN_AUTH
 export OVPN_COMP_LZO
 export OVPN_OTP_AUTH
+export OVPN_FRAGMENT
 
 # Preserve config
 if [ -f "$OVPN_ENV" ]; then
@@ -223,6 +228,8 @@ EOF
 [ -n "$OVPN_CLIENT_TO_CLIENT" ] && echo "client-to-client" >> "$conf"
 [ -n "$OVPN_COMP_LZO" ] && echo "comp-lzo" >> "$conf"
 
+[ -n "$OVPN_FRAGMENT" ] && echo "fragment $OVPN_FRAGMENT" >> "$conf"
+
 [ "$OVPN_DNS" == "1" ] && for i in "${OVPN_DNS_SERVERS[@]}"; do
   echo "push dhcp-option DNS $i" >> "$conf"
 done

tests/openvpn_conf_options.test.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+
+OVPN_DATA=opvn-data
+
+IMG=kylemanna/openvpn
+
+# Function to fail
+abort() { cat <<< "$@" 1>&2; exit 1; }
+
+#
+# Create a docker container with the config data
+#
+sudo docker run --name $OVPN_DATA -v /etc/openvpn busybox
+
+#
+# Generate openvpn.config file
+#
+SERV_IP=$(ip -4 -o addr show scope global  | awk '{print $4}' | sed -e 's:/.*::' | head -n1)
+sudo docker run --volumes-from $OVPN_DATA --rm $IMG ovpn_genconfig -u udp://$SERV_IP -f 1400
+
+#
+# grep for config lines from openvpn.conf
+# add more tests for more configs as required
+#
+
+# 1. verb config
+CONFIG_REQUIRED_VERB="verb 3"
+CONFIG_MATCH_VERB=$(sudo docker run --rm -it --volumes-from $OVPN_DATA busybox grep verb /etc/openvpn/openvpn.conf)
+
+# 2. fragment config
+CONFIG_REQUIRED_FRAGMENT="fragment 1400"
+CONFIG_MATCH_FRAGMENT=$(sudo docker run --rm -it --volumes-from $OVPN_DATA busybox grep fragment /etc/openvpn/openvpn.conf)
+
+#
+# Clean up
+#
+# sudo docker rm -f $OVPN_DATA
+
+#
+# Tests
+#
+
+if [[ $CONFIG_MATCH_VERB =~ $CONFIG_REQUIRED_VERB ]]
+then
+  echo "==> Config match found: $CONFIG_REQUIRED_VERB == $CONFIG_MATCH_VERB"
+else
+  abort "==> Config match not found: $CONFIG_REQUIRED_VERB != $CONFIG_MATCH_VERB"
+fi
+
+if [[ $CONFIG_MATCH_FRAGMENT =~ $CONFIG_REQUIRED_FRAGMENT ]]
+then
+  echo "==> Config match found: $CONFIG_REQUIRED_FRAGMENT == $CONFIG_MATCH_FRAGMENT"
+else
+  abort "==> Config match not found: $CONFIG_REQUIRED_FRAGMENT != $CONFIG_MATCH_FRAGMENT"
+fi