#!/bin/bash
# -----------
# policy-rc.d
# -----------
#
# ----------------------------------------------------------
# Lliurex Policy layer (/usr/sbin/policy-rc.d) interface
# Sept 2006. Luis Garcia <garcia_luigis@gva.es> for LliureX
# ----------------------------------------------------------
#
# -------------------------------------------------------------------------
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston MA 02110-1301 USA
# -------------------------------------------------------------------------
#

set -e

# ----------
# VARIABLES 
# ----------
ACTION_ALLOWED=0
ACTION_FORBIDDEN=101
SYNTAX_ERROR=103
UNKNOWN_ACTION=1
UNKNOWN_INIT_SCRIPT=100
USE_FALLBACK=106

DEFAULT_POLICY=${ACTION_ALLOWED}
DEFAULT_CONF="/etc/default/llxcfg-policy"
[ ! -r "$DEFAULT_CONF" ] || . ${DEFAULT_CONF}

LIST_MODE=""
QUIET_MODE=""

POLICY_LIB="/usr/share/lliurex/llxcfg-runtime/llxcfg-policyfuncs.sh"
[ -e ${POLICY_LIB} ] || error_msg "ERROR: File \"${POLICY_LIB}\" not found"
. ${POLICY_LIB}


# ----------
# FUNCTIONS
# ----------
usage() {
  error_msg "Usage: $0 [--quiet] [--list] <initscript ID> <actions> [<runlevel>]"
}

error_msg() {
  [ -z "${QUIET_MODE}" ] && echo "${1}" >&2
  exit ${SYNTAX_ERROR}  
}

# -----
# MAIN
# -----
[ -z "$1" ] && usage
END_OPTIONS=""
while [ -z "${END_OPTIONS}" ] ; do
   case "$1" in
      "--quiet")
         QUIET_MODE="Y"
         shift
	 ;;
      "--list")
         LIST_MODE="Y"
         shift
	 ;;
      *)
         END_OPTIONS="YES"
         ;;
   esac
done

[ -z "$1" ] && usage
INIT_SCRIPT="$1"


if [ "${LIST_MODE}" ]; then
   shift
   echo -n "policy for ${INIT_SCRIPT}"
   [ "$1" ] && echo -n " (runlevel ${1})"
   if $0 --quiet ${INIT_SCRIPT} start $@ ; then
      echo -e ":\n   ALL ACTIONS ENABLED"
   else
      echo -e ":\n   DISABLED FOR: start|restart|reload|force-reload"
   fi
   exit 0
fi

[ -z "$2" ] && usage
ACTIONS="$2"
RUN_LEVEL="$3"

for ACTION0 in ${ACTIONS}; do
   ACTION="`echo ${ACTION0} |tr -d "()"`"
   case "${ACTION}" in
      start|restart|reload|force-reload)
         
	 if ! llxpol_test_active_script "${INIT_SCRIPT}" ; then
	    exit ${ACTION_FORBIDDEN}
	 fi
	 ;;
      stop|force-stop|status)
         exit ${DEFAULT_POLICY}
         ;;
      *)
#         exit ${UNKNOWN_ACTION}
         exit ${DEFAULT_POLICY}
         ;;
   esac
done

exit ${DEFAULT_POLICY}