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#! /bin/sh

ask() {
    local question default answer

    question=$1
    default=$2
    if [ -z "${PACKAGE_BUILDING}" ]; then
        read -p "${question} [${default}]? " answer
    fi
    if [ x${answer} = x ]; then
        answer=${default}
    fi
    echo ${answer}
}

yesno() {
    local dflt question answer

    question=$1
    dflt=$2
    while :; do
        answer=$(ask "${question}" "${dflt}")
        case "${answer}" in
        [Yy]*)          return 0;;
        [Nn]*)          return 1;;
        esac
        echo "Please answer yes or no."
    done
}

make_account() {
    local u g gcos

    u=$1
    g=$2
    gcos=$3

    if pw group show "${g}" >/dev/null 2>&1; then
	echo "You already have a group \"${g}\", so I will use it."
    else
	echo "You need a group \"${g}\"."
	if which -s pw && yesno "Would you like me to create it" y; then
	    pw groupadd ${g} || exit
	    echo "Done."
	else
	    echo "Please create it, and try again."
	    if ! grep -q "^${u}:" /etc/passwd; then
		echo "While you're at it, please create a user \"${u}\" too,"
		echo "with a default group of \"${g}\"."
	    fi
	    exit 1
	fi
    fi
    
    if pw user show "${u}" >/dev/null 2>&1; then
	echo "You already have a user \"${u}\", so I will use it."
    else
	echo "You need a user \"${u}\"."
	if which -s pw && yesno "Would you like me to create it" y; then
	    pw useradd ${u} -g ${g} -h - \
		-s /bin/sh -c "${gcos}" || exit
	    echo "Done."
	else
	    echo "Please create it, and try again."
	    exit 1
	fi
    fi
}

create_crontab_entries() {
    local b e
    b=$1
    e=$2

    if crontab -u munin -l > /dev/null 2>&1; then
	TMPFILE=`mktemp -t munin` || exit 1
	cat > $TMPFILE
	crontab -u munin -l | sed -e "/^$b$/,/^$e$/d" | \
	cat - $TMPFILE | crontab -u munin -
	rm $TMPFILE
    else
	crontab -u munin -
    fi
}

mklogdir() {
}

newsyslog() {
    if fgrep -q '/var/log/munin-main/*' /etc/newsyslog.conf; then
        :
    else
        cat >> /etc/newsyslog.conf <<EOT
/var/log/munin-main/*.log munin:munin	644  7	   *	@T00  GNWZ
EOT
    fi  
}


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

case $2 in
    PRE-INSTALL)
	make_account munin munin "Munin owner"
	;;      
    POST-INSTALL)
	newsyslog
	create_crontab_entries '#BEGIN_MUNIN_MAIN' '#END_MUNIN_MAIN' <<EOT
#BEGIN_MUNIN_MAIN
MAILTO=root

*/5 * * * *     ${PKG_PREFIX}/bin/munin-cron
#END_MUNIN_MAIN
EOT
	;;      
esac