#!/sbin/sh

################################################################################
#
#	Copyright (c) 1999-2003 by Sun Microsystems, Inc. All Rights Reserved.
#	Copyright 1992-95 AT&T Global Information Solutions
#
# ident "@(#)lunames_list.sh 5.7     03/01/29 SMI"
#
# This utility is not for public use; the interface is subject to change 
# without notice.
#
# USAGE: luname_list [ [ -a | -A ] [ -c | -C ] [ -d | -D ] ]
#		-a - BE is active.
#		-A - BE is not active (is inactivate).
#		-c - BE is complete.
#		-C - BE is not complete (is incomplete).
#		-d - BE can be deleted.
#		-D - BE can not be deleted.
# If no options are specified, all BEs are listed.
#
# INPUT: NONE
# OUTPUT: Names of BEs are written to stdout
# DEV: Satish
# NOTES: This script is written to generate choices in FMLI scripts
#
# Note: performance testing has proven that "/sbin/sh" provides the best 
# performance over /bin/sh and /bin/ksh.
#
################################################################################

LU_PROG_FULL_PATH="$0"
LU_PROG_NAME="`basename ${LU_PROG_FULL_PATH}`"; export LU_PROG_NAME

################################################################################
# Name:		usage
# Description:	output command line usage information; then call exit_script to 
#		terminate execution.
# Local Prefix:	<none>
# Arguments:	$1 = exit code for script ("" defaults to "3").
# Example:	usage 3
# Returns:	<none> 
################################################################################

usage()
{
  ${LUPRINTF} -p2 "`gettext 'Usage: %s [-l error_log] [-o outfile] \
[ [ -a | -A ] [ -c | -C ] [ -d | -D ] ]'`" "${LU_PROG_NAME}"
  if [ -z "$1" ] ; then
    exit 3
  fi
  exit "$1"
}

################################################################################
# Name:		<main>
# Description:	Main code (outside of any function definitions) - executed at 
#		script startup.
# Local Prefix:	<none>
# Arguments:	$0...$n = All arguments specified by user on command line that 
#		invoked this script.
################################################################################

# Dot the defaults file.

if [ ! -s /etc/default/lu ] ; then
  echo "${LU_PROG_NAME}: ""`gettext 'ERROR: Live Upgrade not installed properly \
 (/etc/default/lu not found).'`"
  exit 1
fi
. /etc/default/lu

# Default global variables we expect to be set from /etc/default/lu.

LUBIN=${LUBIN:=/usr/lib/lu}

# Dot the Live Upgrade library functions.

if [ ! -s $LUBIN/lulib ] ; then
  echo "${LU_PROG_NAME}: ""`gettext 'ERROR: The Live Upgrade product is not \
installed properly (${LUBIN}/lulib not found).'`"
  exit 1
fi

. $LUBIN/lulib

NEXT_ACTIVE=${NEXT_ACTIVE:=/etc/lu/.NEXT_ACTIVE}

# Check for existence and non-zero size of lutab file.

if [ ! -f /etc/lutab -o ! -s /etc/lutab ] ; then
  ${LUPRINTF} -Eelp2 "`gettext 'No BEs are configured on this system.'`"
  exit 1
fi

  ######################################################################################
  ##################### Command line option and argument processing ####################
  ######################################################################################

# Reset all command line parse flags to default values.
flag_a="" # -a - BE is active.
flag_A="" # -A - BE is inactivate.
flag_c="" # -c - BE is complete.
flag_C="" # -C - BE is incomplete.
flag_d="" # -d - BE can be deleted.
flag_D="" # -D - BE can not be deleted.
flag_l="" # -l f - log file path.
flag_o="" # -o f - output file path.
flag_x="" # -x n - set debug level to n (PRIVATE).

while [ $# -ne 0 ] ; do
  while getopts aAcCdDl:o:x:X c
  do
    case $c in
      a) # -a - BE is active.
	 flag_a="yes"
	 ;;
      A) # -A - BE is inactivate.
	 flag_A="yes"
	 ;;
      c) # -c - BE is complete.
	 flag_c="yes"
	 ;;
      C) # -C - BE is incomplete.
	 flag_C="yes"
	 ;;
      d) # -d - BE can be deleted.
	 flag_d="yes"
	 ;;
      D) # -D - BE can not be deleted.
	 flag_D="yes"
	 ;;
      l) # -l f - error log file path.
	 # This overrides the LU_ERROR_LOG_FILE setting read from /etc/default/lu
	 lulib_cannot_duplicate_option "${flag_l}" "${OPTARG}" "-l"
	 ${LUPRINTF} -lp2D - "`gettext 'Verifying that the error log file <%s> \
specified can be created and appended to.'`" "${OPTARG}"
	 ERRMSG="`${LUPRINTF} -c \"${OPTARG}\" 2>&1`"
	 if [ $? -ne 0 ] ; then
	   [ -n "${ERRMSG}" ] && ${LUPRINTF} -elp2 '%s' "${ERRMSG}"
	   ${LUPRINTF} -Eelp2 "`gettext 'Argument <%s> to -l option may not be \
created or appended to: <%s>.'`" "${OPTARG}" "${ERRMSG}"
	   exit_script 3
	 fi
	 flag_l="${OPTARG}"
	 lulib_set_error_log_file "${flag_l}"
	 ;;
      o) # -o f - output file path.
	 # This overrides the LU_SESSION_LOG_FILE setting read from /etc/default/lu
	 lulib_cannot_duplicate_option "${flag_o}" "${OPTARG}" "-o"
	 ${LUPRINTF} -lp2D -  "`gettext 'Verifying that the session log file <%s> \
can be created and appended to.'`" "${OPTARG}"
	 ERRMSG="`${LUPRINTF} -c \"${OPTARG}\" 2>&1`"
	 if [ $? -ne 0 ] ; then
	   [ -n "${ERRMSG}" ] && ${LUPRINTF} -elp2 '%s' "${ERRMSG}"
	   ${LUPRINTF} -Eelp2 "`gettext 'Argument <%s> to -o option may not be \
created or appended to: <%s>.'`" "${OPTARG}" "${ERRMSG}"
	   exit_script 3
	 fi
	 flag_o="${OPTARG}"
	 lulib_set_session_log_file "${flag_o}"
	 ;;
      x) # -x n - set debug level to n (PRIVATE).
	 # This overrides the default setting read from /etc/default/lu
	 lulib_cannot_duplicate_option "${flag_x}" "${OPTARG}" "-x"
	 /bin/test "${OPTARG}" -ge 0 2>/dev/null
	 if [ $? -gt 1 ] ; then
	   ${LUPRINTF} -Eelp2 "`gettext 'Argument <%s> to -x option is not a \
number.'`" "${OPTARG}"
	   usage 3
	 fi
	 flag_x="${OPTARG}"
	 lulib_set_debug "${flag_x}"
	 ;;
      X) # -X - set XML output mode.
	  lulib_set_output_format 'xml'
	  ;;
      \?) # unknown - option.
	  usage 3
    esac
  done

  # Found either end of arguments, +option, or non-option argument; shift out
  # what has been processed so far; if a non-option argument is present
  # capture it and continue processing the command line arguments.
  shift `/bin/expr $OPTIND - 1`
  OPTIND=1
  if [ $# -ne 0 -a "$1" = '+X' ] ; then
      # +X - set TEXT output mode.
      lulib_set_output_format 'text'
      shift
  else
    break
  fi
done

# Fixup debug, session log, and error log settings
lulib_fixup_startup_settings

  ######################################################################################
  ############ Validate all command line arguments and options as possible #############
  ######################################################################################

# If any command line arguments provided, exit with error.
if [ "$#" -ne "0" ] ; then
  ${LUPRINTF} -Eelp2 "`gettext 'Command line arguments <%s> not allowed.'`" "$*"
  usage 3
fi

# Make sure only one output option specification given
lulib_cannot_have_conflicting_option "${flag_a}" "-a" "${flag_A}" "-A"
lulib_cannot_have_conflicting_option "${flag_c}" "-c" "${flag_C}" "-C"
lulib_cannot_have_conflicting_option "${flag_d}" "-d" "${flag_D}" "-D"

# Get the current BE name only if option requires it (-n, -i, -d only)

CURR_BE=`lulib_lucurr`
if [ $? != 0 ] ; then
  ${LUPRINTF} -Eelp2 "`gettext 'Unable to determine the name of the current active boot environment.'`"
  exit 1
fi

# Get name of next active BE (if available)
ACTIVE=""
if [ -f "${NEXT_ACTIVE}" -a -s "${NEXT_ACTIVE}" ] ; then
  ACTIVE=`/bin/cat ${NEXT_ACTIVE} 2> /dev/null`
fi

$LUBIN/lunames_get |
while read BE_NAME ; do
  STATUS="`${LUETCBIN}/ludo get_be_status_from_be_name \"${BE_NAME}\"`"

  # -a - BE is active.
  [ -n "${flag_a}" -a "${BE_NAME}" != "${CURR_BE}" ] && continue

  # -A - BE is inactivate.
  [ -n "${flag_A}" -a "${BE_NAME}" = "${CURR_BE}" ] && continue

  # -c - BE is complete.
  [ -n "${flag_c}" -a "${STATUS}" != "C" ] && continue

  # -C - BE is incomplete.
  [ -n "${flag_C}" -a "${STATUS}" = "C" ] && continue

  if [ -n "${flag_d}" ] ; then
    # -d - BE can be deleted.
    [ "${BE_NAME}" = "${CURR_BE}" ] && continue
    [ -n "${ACTIVE}" -a "${BE_NAME}" = "${ACTIVE}" ] && continue
  elif [ -n "${flag_D}" ] ; then
    # -D - BE can not be deleted.
    if [ "${BE_NAME}" != "${CURR_BE}" ] ; then
      [ -z "${ACTIVE}" -o "${BE_NAME}" != "${ACTIVE}" ] && continue
    fi
  fi

  echo "${BE_NAME}"
done

exit 0