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#!/bin/sh
# Copyright (C) 2019 Red Hat, Inc.
#
# Author: Nikos Mavrogiannopoulos
#
# This file is part of GnuTLS.
#
# GnuTLS 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.
#
# GnuTLS 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 Lesser General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>
: ${srcdir=.}
: ${SERV=../src/gnutls-serv${EXEEXT}}
: ${CLI=../src/gnutls-cli${EXEEXT}}
TMPFILE=config.$$.tmp
TMPFILE2=log.$$.tmp
export GNUTLS_SYSTEM_PRIORITY_FAIL_ON_INVALID=1
if ! test -x "${SERV}"; then
exit 77
fi
if ! test -x "${CLI}"; then
exit 77
fi
if test "${WINDIR}" != ""; then
exit 77
fi
. "${srcdir}/scripts/common.sh"
# We intentionally add stray spaces and tabs to check our parser
cat <<_EOF_ > ${TMPFILE}
[overrides]
tls-disabled-kx = dhe-dss
tls-disabled-kx = dhe-rsa
tls-disabled-kx = unknown
_EOF_
export GNUTLS_SYSTEM_PRIORITY_FILE="${TMPFILE}"
export GNUTLS_DEBUG_LEVEL=3
# Try whether a client connection with a disabled KX algorithm will succeed.
KEY1=${srcdir}/../doc/credentials/x509/key-rsa.pem
CERT1=${srcdir}/../doc/credentials/x509/cert-rsa.pem
unset GNUTLS_SYSTEM_PRIORITY_FILE
eval "${GETPORT}"
launch_server $$ --echo --priority "NORMAL:-VERS-ALL:+VERS-TLS1.2" --x509keyfile ${KEY1} --x509certfile ${CERT1}
PID=$!
wait_server ${PID}
"${CLI}" -p "${PORT}" 127.0.0.1 --priority NORMAL:-KX-ALL:+DHE-RSA --insecure --logfile ${TMPFILE2} </dev/null >/dev/null ||
fail "expected connection to succeed (1)"
export GNUTLS_SYSTEM_PRIORITY_FILE="${TMPFILE}"
"${CLI}" -p "${PORT}" 127.0.0.1 --priority NORMAL:-KX-ALL:+DHE-RSA --insecure --logfile ${TMPFILE2} </dev/null >/dev/null &&
fail "expected connection to fail (2)"
# test whether the unknown KX will be caught
GNUTLS_SYSTEM_PRIORITY_FAIL_ON_INVALID=1
export GNUTLS_SYSTEM_PRIORITY_FAIL_ON_INVALID
"${CLI}" -p "${PORT}" 127.0.0.1 --priority NORMAL --insecure --logfile ${TMPFILE2} </dev/null >/dev/null &&
fail "expected connection to succeed (3)"
unset GNUTLS_SYSTEM_PRIORITY_FAIL_ON_INVALID
kill ${PID}
wait
# Try whether a server connection with a disabled KX will succeed.
KEY1=${srcdir}/../doc/credentials/x509/key-rsa.pem
CERT1=${srcdir}/../doc/credentials/x509/cert-rsa.pem
eval "${GETPORT}"
launch_server $$ --echo --priority "NORMAL:-VERS-ALL:+VERS-TLS1.2" --x509keyfile ${KEY1} --x509certfile ${CERT1}
PID=$!
wait_server ${PID}
unset GNUTLS_SYSTEM_PRIORITY_FILE
"${CLI}" -p "${PORT}" 127.0.0.1 --priority "NORMAL:-KX-ALL:+DHE-RSA" --insecure --logfile ${TMPFILE2} </dev/null >/dev/null &&
fail "expected connection to fail (2)"
kill ${PID}
wait
exit 0
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