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#!/bin/sh 
# 
# /etc/rc.d/rc.openvpn 
# 
# Start/stop/restart the openvpn daemon. 
#
# By default, this script will start/stop/restart a daemon for every *.conf
# file found in /etc/openvpn.
#
# To work with a single connection, add the name of the config file:
# /etc/rc.d/rc.openvpn start configfile.conf
#
# You may also use a config file not found in /etc/openvpn by providing a
# complete path:
# /etc/rc.d/rc.openvpn start /path/to/some/other/configfile.conf
#
# The name of a config file provided with a complete path should not match
# the name of any config file present in the /etc/openvpn directory.
 
ovpn_start() { 
  if [ -x /usr/sbin/openvpn ]; then
    if [ -z "$1" ]; then # start OpenVPN for all config files:
      if /bin/ls /etc/openvpn/*.conf 1> /dev/null 2> /dev/null ; then
        for config in /etc/openvpn/*.conf ; do
          echo "Starting OpenVPN:  /usr/sbin/openvpn --daemon --writepid /run/openvpn/$(basename $config).pid --user nobody --group nobody --config $config"
          /usr/sbin/openvpn --daemon --writepid /run/openvpn/$(basename $config).pid --user nobody --group nobody --config $config
        done
      else
        echo "Unable to start OpenVPN - no .conf files found in /etc/openvpn/."
      fi
    else # start OpenVPN for one config file:
      if [ -r "$1" ]; then
        echo "Starting OpenVPN:  /usr/sbin/openvpn --daemon --writepid /run/openvpn/$(basename $1).pid --user nobody --group nobody --config $1"
        /usr/sbin/openvpn --daemon --writepid /run/openvpn/$(basename $1).pid --user nobody --group nobody --config $1
      else # config file is missing:
        echo "Error starting OpenVPN: config file $1 is missing."
      fi
    fi
  fi
} 

ovpn_stop() { 
  # Note: OpenVPN has a bad habit of leaving stale pid files around when exiting.
  # Maybe it would be better to just use killall unless called for one config?
  if [ -z "$1" ]; then # stop OpenVPN for all pid files:
    if /bin/ls /run/openvpn/*.pid 1> /dev/null 2> /dev/null ; then
      for pid in /run/openvpn/*.pid ; do
        echo "Stopping OpenVPN for pid file $pid..."
        kill $(cat $pid)
        rm -f $pid
      done
    else
      echo "Warning: no pid files found in /run/openvpn/. Using killall to stop any OpenVPN processes."
      killall openvpn
    fi
  else # stop OpenVPN for one config file:
    if [ -r /run/openvpn/$(basename ${1}).pid ]; then
      echo "Stopping OpenVPN for config file ${1}..."
      kill $(cat /run/openvpn/$(basename ${1}).pid)
      rm -f /run/openvpn/$(basename ${1}).pid
    else
      echo "Error stopping OpenVPN: no such pid file /run/openvpn/$(basename ${1}).pid"
    fi
  fi
}

ovpn_restart() {
  if [ ! -z "$1" ]; then # restart for all config files:
    ovpn_stop
    sleep 2
    ovpn_start
  else # restart for one config file only:
    ovpn_stop $1
    sleep 2
    ovpn_start $1
  fi
}

ovpn_status() {
  if /bin/ls /run/openvpn/*.pid 1> /dev/null 2> /dev/null ; then
    echo "Currently running OpenVPN processes according to .pid files in /run/openvpn:"
    for pid in /run/openvpn/*.pid ; do
      echo "  $(basename $pid) ($(cat $pid))"
    done
  else
    echo "No .pid files found in /run/openvpn." 
  fi
}

# Create PID directory if it doesn't exist:
if [ ! -d /run/openvpn ]; then
  mkdir -p /run/openvpn
fi

case "$1" in
'start')
  ovpn_start $2
  ;;
'stop')
  ovpn_stop $2
  ;;
'restart')
  ovpn_restart $2
  ;;
'status')
  ovpn_status
  ;;
*)
  echo "Usage: $0 {start|stop|restart}"
esac