File: blend-update-menus

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blends 0.7.2
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#!/bin/bash
#
# $Id$

usage() {
   echo "Usage: `basename $0` [ -u <user> | -b <Blend> ]"
   echo "Blend: `getBlendList|tr ' ' '|'`"
   echo "user:  system user registerd to a Blend"
   echo
   echo "run as user updates only the user's menu script"
}

# the base dir for Blends conffiles, where script expects to find dirs named like
# each registered Blend
CONFBASE=${CONFBASE:-/etc/blends}

# a local per Blend conf is sourced later, after argument parsing
if [ ! -s ${CONFBASE}/blends.conf ] ; then
    echo "File ${CONFBASE}/blends.conf is missing.  Please check installation of package blends-common."
    exit 13
fi
. ${CONFBASE}/blends.conf

# specific utilities for blend-update-menus
if [ ! -s ${SHAREDIR}/blend-update-menus ] ; then
    echo "File ${SHAREDIR}/blend-update-menus is missing.  Please check installation of package blends-common."
    exit 13
fi
. ${SHAREDIR}/blend-update-menus

# Get command line arguments
GETOPT=`getopt -o b:d:u:h --long blend:,user:,help -n "$0" -- "$@"`
eval set -- "$GETOPT"
while true
do
	case $1 in
		-h|--help)
            usage
            exit 0
            ;;
		# get blend name
		# for compatibility reasons we need to handle -d option
		# here as well because postrm of previousely installed
		# CDDs are using this option
		-b|--blend|-d)
			if ! amI root; then
				blendLog "You must be root to specify --blend parameter"
				blendLog ""
				usage
				exit 64
			elif [ -n "${BLENDUSER}" ]; then
				blendLog "You cannot specify --blend and --user at the same time" 
				blendLog ""
				usage
				exit 0
			else
				BLEND=$2
				shift 2
			fi
			;;
		# get user name
		-u|--user)
			BLENDUSER=$2
			shift 2

			if ! amI root && ! amI "${BLENDUSER}"; then
				blendLog  "You must be root to specify --user parameter with a user that's not you"
				usage
				exit 64
			elif [ "${BLENDUSER}" == 'root' ]; then
				blendFail 64 "err: Menus for user 'root' cannot be updated"
			elif [ -n "${BLEND}" ]; then
				usage
				exit 0
			fi
			;;
		--)
			shift
			break
			;;
		*)
			blendLog "$1 not recognized as option" >&2
			exit 67 # EX_USAGE
			;;
	esac
done


# update menu scripts for BLENDUSER, for any Blend, if any
if [ -n "${BLENDUSER}" ]; then 
	SYSSCRIPT="${SHAREDIR}/menu/blend-menu"
	USERSCRIPT="`getUserHome ${BLENDUSER}`/.menu/blend-menu"

	set -e
	checkUser ${BLENDUSER} || \
		blendFail 67 "User does not exist"
	isUserRegistered ${BLENDUSER} || \
		blendFail 67 "User ${BLENDUSER} is not registered to any Blend"
	
	# there's nothing to do on per user basis criteria
	#updateUser ${BLENDUSER} "${SYSSCRIPT}" "${USERSCRIPT}"
	set +e

# update menu scripts for any user registered into the specified Blend
elif [ -n "${BLEND}" ]; then 
	# Now that we know the selected Blend, we can check if there is a local
	# configuration for it (ie differnt backend from the default one)
	test -n "${BLEND}" -a  -f ${CONFBASE}/${BLEND}/${BLEND}.conf &&
		. ${CONFBASE}/${BLEND}/${BLEND}.conf
		
	set -e
	checkBlend ${BLEND} || \
		blendFail $? "Debian Pure Blend ${BLEND} does not exist"
		
	# there's nothing to do on per Blend basis criteria
	#SYSSCRIPT="${SHAREDIR}/menu/blend-menu"
	#updateBlend ${BLEND} "${SYSSCRIPT}"
	set +e
else
    exec $0 --user `whoami`
fi