#!/bin/sh
# %%PORTNAME%%

name=$(basename $0)

if [ ! -t 1 ]
then
    tmp_output="$(mktemp /tmp/$name.XXXXXXXXXX)"
    exec 3>&1 4>&2
    exec > $tmp_output 2>&1
fi

clean_exit() {
    local rc=$1

    if [ ! -t 1 ]
    then
        exec 1>&3 3>&-
        exec 2>&4 4>&-
        if [ $rc -ne 0 ]
        then
            [ -s $tmp_output ] && cat $tmp_output
            cp /dev/null $tmp_output
            rm -f $tmp_output
            exit $rc
        fi
        cp /dev/null $tmp_output
        rm -f $tmp_output
        exit $rc
    else
        exit $rc
    fi
}

export KRB5CCNAME=/tmp/krb5cc_$name
KRB5_CLIENT_PRINCIPAL="$(hostname -s)\$"

%%GSSAPIBASE%%/bin/kinit -k $KRB5_CLIENT_PRINCIPAL
rc=$?
if [ $rc -ne 0 ]
then
    KRB5_CLIENT_PRINCIPAL="$(hostname -s | tr \"[:lower:]\" \"[:upper:]\")\$"
    >&2 echo "$name: retrying with $KRB5_CLIENT_PRINCIPAL"
    %%GSSAPIBASE%%/bin/kinit -k $KRB5_CLIENT_PRINCIPAL
    rc=$?
    if [ $rc -ne 0 ]
    then
        >&2 echo "$name: kinit failed"
        rc=1
    fi
fi

[ $rc -ne 0 ] && clean_exit $rc

%%LOCALBASE%%/bin/nsupdate -g %%LOCALBASE%%/etc/$name.nsupdate
rc=$?
if [ $rc -ne 0 ]
then
    >&2 echo "$name: nsupdate failed"
    rc=2
fi

clean_exit $rc