#! /bin/sh

set -e

VIRSH_DEFAULT_CONNECT_URI="qemu:///system"
export VIRSH_DEFAULT_CONNECT_URI

usage="Usage: $0 COMMAND [DOMAIN ARGS...]"
groups="$VMCTL_GROUP $USERV_GROUP"

case x${USERV_SERVICE+t} in
  xt) set -- "$USERV_SERVICE" "$@" ;;
esac

case "$#,$1" in
  1,help)
    cat <<EOF
$usage

Commands:
	status DOM	Show domain status.
	reset DOM	Forcibly restart the domain.
	stop DOM	Forcibly turn off the domain.
	reboot DOM	Send the domain a reboot request.
	shutdown DOM	Send the domain a shutdown request.
	save DOM	Suspend the domain; restart using \`start'.
	start DOM [-c]	Start up the domain (-c: and attach to console).
	console DOM	Attach to the domain's console.
EOF
    exit 0
    ;;
  0,* | 1,*) echo >&2 "$usage"; exit 1 ;;
  *) cmd=$1 dom=$2; shift 2 ;;
esac

allow=nil
while read grps doms; do
  case "$grps" in "" | \#*) continue ;; esac
  gmatch=nil dmatch=nil
  for g in $groups; do
    case ",$grps," in *,$g,*) gmatch=t ;; esac
  done
  for d in $doms; do
    case "$dom" in $d) dmatch=t ;; esac
  done
  case $gmatch,$dmatch in t,t) allow=t; break ;; esac
done <$HOME/vmctl.conf

case $allow in nil) echo >&2 "$0: not permitted"; exit 1 ;; esac

case "$#,$cmd" in
  0,status) virsh dominfo "$dom" ;; 
  0,reset) virsh reset "$dom" ;;
  0,stop) virsh destroy "$dom" ;;
  0,reboot) virsh reboot "$dom" ;;
  0,shutdown) virsh shutdown "$dom" ;;
  0,start | 1,start)
    args=""
    case "$#,$1" in
      0,) ;;
      1,-c | 1,--console) args="$args --console" ;;
      *) echo >&2 "Usage: $0 DOMAIN start [-c]"; exit 1 ;;
    esac
    virsh start "$dom" $args
    ;;
  0,save) virsh managedsave "$dom" ;;
  0,console) virsh console "$dom" ;;
  *) echo >&2 "$usage"; exit 1 ;;
esac