#!/sbin/sh

#################################################################################################
#
#	Copyright (c) 1999-2003 by Sun Microsystems, Inc. All Rights Reserved.
#	Copyright 1992-95 AT&T Global Information Solutions
#
# ident "@(#)luname_valid.sh 5.3     03/01/29 SMI"
#
# USAGE   : luname_valid "be_name"
# FUNCTION: Validate the name of a BE.
# INPUT   : Name of the BE.
# OUTPUT  : None
# DEV     : Satish
#
# Returns:	0 - name is valid and not in use by any other BE (NO MESSAGES OUTPUT).
#		1 - internal program error (ERROR MESSAGES OUTPUT).
# 		2 - name is either invalid or in use by another BE (ERROR MESSAGES OUTPUT).
#
# This is a script to validate the Name of a boot environment.
# This script will be used by the FMLI forms. It is a wrapper
# for a call to the lulib library lulib_be_name_exists call.
#
# A valid BE name should be less than 30 characters and should not contain
# the forward-slash (/), space () or double-quote (") characters. 
#
# Also the name should be unique i.e the name should not already exist in the lutab file.
#
#################################################################################################

LU_PROG_NAME=`basename $0`

#################################################################################################
# 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

if [ $# != 1 ] ; then
  ${LUPRINTF} -p2 "`gettext 'USAGE: <%s> BE_name'`" "${LU_PROG_NAME}"
  ${LUPRINTF} -Wp2 "`gettext 'be_name should be enclosed in single quotes.'`"
  exit 1
fi

BE_NAME="$1"

# 0 - the be name is valid and exists. [NO MESSAGES OUTPUT]
# 1 - the be name is valid and does NOT exist. [NO MESSAGES OUTPUT]
# 2 - the be name is invalid. [MESSAGES OUTPUT]
lulib_be_name_exists "${BE_NAME}"
ret="$?"
if [ "${ret}" -eq "0" ] ; then
  # no message if BE exists so output one now.
  ${LUPRINTF} -Eelp2 "`gettext 'The BE name <%s> is already assigned to another BE.'`" "${BE_NAME}"
fi

if [ "${ret}" -ne "1" ] ; then
  ${LUPRINTF} -Eelp2 "`gettext 'The BE name <%s> is not valid.'`" "${BE_NAME}"
  exit 2
fi

exit 0