1#!/bin/sh 2 3# Copyright (C) Internet Systems Consortium, Inc. ("ISC") 4# 5# SPDX-License-Identifier: MPL-2.0 6# 7# This Source Code Form is subject to the terms of the Mozilla Public 8# License, v. 2.0. If a copy of the MPL was not distributed with this 9# file, you can obtain one at https://mozilla.org/MPL/2.0/. 10# 11# See the COPYRIGHT file distributed with this work for additional 12# information regarding copyright ownership. 13 14set -e 15 16. ../conf.sh 17 18DIGOPTS="+nosea +stat +noquest +nocomm +nocmd -p ${PORT}" 19 20status=0 21 22echo_i "Getting message size with compression enabled" 23$DIG $DIGOPTS -b 10.53.0.1 @10.53.0.1 mx example >dig.compen.test 24COMPEN=$(grep ';; MSG SIZE' dig.compen.test | sed -e "s/.*: //g") 25cat dig.compen.test | grep -v ';;' | sort >dig.compen.sorted.test 26 27echo_i "Getting message size with compression disabled" 28$DIG $DIGOPTS -b 10.53.0.2 @10.53.0.1 mx example >dig.compdis.test 29COMPDIS=$(grep ';; MSG SIZE' dig.compdis.test | sed -e "s/.*: //g") 30cat dig.compdis.test | grep -v ';;' | sort >dig.compdis.sorted.test 31 32# the compression disabled message should be at least twice as large as with 33# compression disabled, but the content should be the same 34echo_i "Checking if responses are identical other than in message size" 35{ 36 diff dig.compdis.sorted.test dig.compen.sorted.test >/dev/null 37 ret=$? 38} || true 39if [ $ret != 0 ]; then echo_i "failed"; fi 40status=$((status + ret)) 41 42echo_i "Checking if message with compression disabled is significantly larger" 43echo_i "Disabled $COMPDIS vs enabled $COMPEN" 44val=$(((COMPDIS * 3 / 2) / COMPEN)) 45if [ $val -le 1 ]; then 46 echo_i "failed" 47 status=$((status + 1)) 48fi 49 50echo_i "exit status: $status" 51[ $status -eq 0 ] || exit 1 52