#!/bin/bash
# First argument: Client identifier, e.g. Smartphone_ User_1
OUTPUTDIR="$1"
CONFIGNAME=$OUTPUTDIR
BASE_CONFIG="client_template.ovpn"
OUTPUT=$CONFIG_NAME.ovpn

#function() check_dir
## Parameter: $CONFIG_NAME
#{
#if [ ! -d $OUTPUTDIR ]; then
#  mkdir $OUTPUTDIR
#else
#  echo "Directory \"$OUTPUTDIR\" already exsists!"
#  #read -p "Continue? (Y/N): " confirm && [[ $confirm == [yY] || $confirm == [yY][eE][sS] ]] || exit 1
#fi
#}

check_tools()
# Check, if necessary tooles are available:
{
if [ -e /usr/share/easy-rsa/easyrsa ]
then
  :
else
  echo "Tool: \"easyrsa\" not installed! --> EXIT"
  exit 1
fi
}

# MAIN
check_tools

if [ -z "${CONFIGNAME}" ]; then
  echo "\"${CONFIGNAME}\" is empty!"
  echo "Please specify client config name. --> EXIT!"
  exit 1
else
  if [ ! -d $OUTPUTDIR ]; then
     echo "ERROR: Folder for $CONFIG_NAME not found --> exit!"
     exit 1
  else
    echo -n "Generating ${CONFIGNAME} ... "
    cat ${BASE_CONFIG} \
      <(echo -e '<ca>') \
      $CONFIGNAME/ca.crt \
      <(echo -e '</ca>\n<cert>') \
      $CONFIGNAME/$CONFIGNAME.crt \
      <(echo -e '</cert>\n<key>') \
      $CONFIGNAME/$CONFIGNAME.key \
      <(echo -e '</key>\n<tls-auth>') \
      $CONFIGNAME/tls-auth.key \
      <(echo -e '</tls-auth>') \
      > ${CONFIGNAME}/${CONFIGNAME}.ovpn
   echo "done!"
  fi
fi