#!/bin/sh
# Copyright (C) 2019,2020 Nicola Di Lieto <nicola.dilieto@gmail.com>
#
# This file is part of uacme.
#
# uacme is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# uacme is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

ARGS=5
E_BADARGS=85

if test $# -ne "$ARGS"
then
    echo "Usage: $(basename "$0") method type ident token auth" 1>&2
    exit $E_BADARGS
fi

METHOD=$1
TYPE=$2
IDENT=$3
TOKEN=$4
AUTH=$5

if [ "$TYPE" != "tls-alpn-01" ]; then
    echo "skipping $TYPE"
    exit 1
fi

case "$METHOD" in
    "begin")
        UALPN_OUT=$(echo "auth $IDENT $AUTH" | ualpn)
        if [ "x$UALPN_OUT" = "xOK" ]; then
            exit 0
        else
            exit 1
        fi
        ;;
    "done"|"failed")
        UALPN_OUT=$(echo "unauth $IDENT" | ualpn)
        if [ "x$UALPN_OUT" = "xOK" ]; then
            exit 0
        else
            exit 1
        fi
        ;;
    *)
        echo "$0: invalid method" 1>&2 
        exit 1
esac

