Service to open ssh connection

tunnel-ssh

#!/usr/bin/env bash
# DESCRIPTION
#   Connect ssh as STunnel 
#
# USAGE
#   sudo tunnel-ssh start[ username@server[:port]]
#   sudo tunnel-ssh restart[ username@server[:port]]
#   sudo tunnel-ssh stop
#   sudo tunnel-ssh status
#
# AUTHOR
# 	alban.lopez@gmail.com



### BEGIN INIT INFO
# Provides:          tunnel-ssh
# Required-Start:    $local_fs $remote_fs $network $syslog $named
# Required-Stop:     $local_fs $remote_fs $network $syslog $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start/stop Transparent tunnel server for VPN over SSH
# Description:       Provide a wrapper around sshuttle
### END INIT INFO


name="tunnel-ssh"

ssh_conf="$2"
# user="${ssh_conf%%@*}"
# server="${ssh_conf##*@}"
#   host="${server%%:*}"
#   port=${server##*:}
#   port=${port:-22}

whoAmI="coaxis" # user running the service

pidFile="/tmp/$name/$ssh_conf"
mkdir -p "$(dirname "$pidFile")"

# Arrêt du service
tunnel_stop() {
  if [[ -f "$pidFile" ]] ; then
    echo "Stopping $name..."
    sudo -u "$whoAmI" kill -9 $(cat "$pidFile")
    sudo -u "$whoAmI" rm "$pidFile" && echo "OK"
  fi
}

# Démarrage du service
tunnel_start() {
  # malformed ssh address
  # [[ "$ssh_conf" != *@* || -z "$user" || -z "$host" ]] && tunnel_usage
  grep -q "Host $ssh_conf" "/home/coaxis/.ssh/config" || tunnel_usage
 # if grep -q "Host $ssh_conf" "/home/coaxis/.ssh/config"; then
 #   tunnel_usage
 # fi
 
	#-e 'ssh -i '$ssh_identity
  echo "Starting $name..."
  args=(
    -v # super verbose
  )
    sudo -u "$whoAmI" ssh "$ssh_conf" "${args[@]}" & echo $! > "$pidFile"
    # tunnel_status
}


tunnel_status() {
  PID=$(tunnel_pid) || true
  if [ -n "$PID" ]; then
    echo "$name to $ssh_conf is running (pid $PID)."
    exit 0
  else
    echo "$name to $ssh_conf is NOT running."
  if [ -e "$PIDFILE" ]; then
    exit 1
  else
    exit 3
    fi
  fi
}

# TODO: fake it as I'm not aware a config file to 'reload'
tunnel_reload() {
    tunnel_stop
    tunnel_start
}


tunnel_usage() {
  echo "Usage: $(basename $0) start|restart[ username@server[:port]]|stop|status "
  exit 1
}

tunnel_pid() {
  # if there is actually an apache2 process whose pid is in pidFile,
  # print it and return 0.
  if [ -e "$pidFile" ]; then
    if pidof "python" | tr ' ' '\n' | grep -w $(cat $pidFile); then
      return 0
    fi
  fi
  return 1
}


# commandes
case $1 in
  start)
    tunnel_start
  ;;
  stop)
    tunnel_stop
  ;;
  restart)
    tunnel_stop
    tunnel_start
  ;;
  reload | force-reload | graceful)
    tunnel_reload
  ;;
  status)
    tunnel_status
  ;;
  *)
    tunnel_usage
esac