#!/bin/bash
#
# Copyright (C) 2026 Nikos Mavrogiannopoulos
#
# This file is part of ocserv.
#
# ocserv 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 2 of the License, or (at
# your option) any later version.
#
# ocserv 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 GnuTLS; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

SERV="${SERV:-../src/ocserv}"
srcdir=${srcdir:-.}
NO_NEED_ROOT=1
OUTFILE=$(mktemp)

. `dirname $0`/common.sh

eval "${GETPORT}"

echo "Testing select-group length validation at config load... "

function finish {
  set +e
  test -n "${CONFIG}" && rm -f ${CONFIG} >/dev/null 2>&1
  rm -f $OUTFILE >/dev/null 2>&1
}
trap finish EXIT

# A select-group entry that is too long to ever fit in the worker's
# fixed-size groupname buffer (MAX_GROUPNAME_SIZE == 64, i.e. 63 usable
# characters) can never be matched by a client. The server must warn
# about it at config-load time.
update_config test-group-cert.config
echo 'select-group = "ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789AB"' >>${CONFIG}

${SERV} -d 1 -c ${CONFIG} -t >${OUTFILE} 2>&1

grep -q "select-group' entry .* exceeds the maximum supported group name length" $OUTFILE
if test $? != 0; then
	echo "Server did not warn about an oversized select-group entry"
	echo "==========================================================="
	cat $OUTFILE
	exit 1
fi

echo " * OK: oversized select-group entry triggers a warning"

# A select-group entry that fits must not trigger the warning.
update_config test-group-cert.config
echo 'select-group = "shortgroup"' >>${CONFIG}

${SERV} -d 1 -c ${CONFIG} -t >${OUTFILE} 2>&1

grep -q "exceeds the maximum supported group name length" $OUTFILE
if test $? = 0; then
	echo "Server unexpectedly warned about a normal-sized select-group entry"
	echo "===================================================================="
	cat $OUTFILE
	exit 1
fi

echo " * OK: normal-sized select-group entry does not trigger the warning"

exit 0