#!/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 this program.  If not, see <http://www.gnu.org/licenses/>.
#

# Reproducer for: Framed-IPv6-Prefix routes returned by RADIUS are silently
# dropped because append_route() receives raw binary data instead of the
# formatted "addr/prefix" string (issue #710).

OCCTL="${OCCTL:-../src/occtl/occtl}"
SERV="${SERV:-../src/ocserv}"
srcdir=${srcdir:-.}
PIDFILE=ocserv-pid.$$.tmp
CLIPID=oc-pid.$$.tmp
PATH=${PATH}:/usr/sbin
IP=$(which ip)
OUTFILE=traffic.$$.tmp
RADIUSLOG=radius-ipv6-prefix.$$.log
RADIUSD=$(which radiusd)

if test -z "${RADIUSD}";then
	RADIUSD=$(which freeradius)
fi

. `dirname $0`/common.sh

eval "${GETPORT}"

if test -z "${IP}";then
	echo "no IP tool is present"
	exit 77
fi

if test -z "${RADIUSD}";then
	echo "no radiusd is present"
	exit 77
fi

if test "$(id -u)" != "0";then
	echo "This test must be run as root"
	exit 77
fi

echo "Testing that RADIUS Framed-IPv6-Prefix routes are applied to the session..."

function finish {
  echo " * Cleaning up..."
  cleanup_client_server
  test -n "${RADIUSPID}" && kill ${RADIUSPID} >/dev/null 2>&1
  rm -f ${OUTFILE} 2>&1
  test -f "${RADIUSLOG}" && cat "${RADIUSLOG}"
  rm -f "${RADIUSLOG}"
}
trap finish EXIT

# server address
. `dirname $0`/random-net.sh

# These addresses must match the raddb/users entry for test-ipv6prefix
VPNNET=192.168.66.0/24
VPNADDR=192.168.66.1
CLIVPNADDR=192.168.66.194
VPNNET6=fd91:6d14:7241:dc6a::/112
VPNADDR6=fd91:6d14:7241:dc6a::0
OCCTL_SOCKET=./occtl-radius-ipv6-prefix-$$.socket

. `dirname $0`/ns.sh

${CMDNS2} ${IP} link set dev lo up

# Run servers
rm -f ${RADIUSLOG}
${CMDNS2} ${RADIUSD} -d ${RADDB_DIR}/ -s -xx -l ${RADIUSLOG} &
RADIUSPID=$!

update_config radius.config
if test "$VERBOSE" = 1;then
	DEBUG="-d 3"
fi

${CMDNS2} ${SERV} -p ${PIDFILE} -f -c ${CONFIG} ${DEBUG} & PID=$!

wait_file_contents "${RADIUSLOG}" "Ready to process requests" 30
wait_ns_port t ${PORT}

echo " * Connecting to ${ADDRESS}:${PORT} as test-ipv6prefix..."
USERNAME=test-ipv6prefix
( echo "test" | ${CMDNS1} ${OPENCONNECT} ${ADDRESS}:${PORT} -u ${USERNAME} \
	--servercert=pin-sha256:xp3scfzy3rOQsv9NcOve/8YVVv+pHr4qNCXEXrNl5s8= \
	-s ${srcdir}/scripts/vpnc-script --pid-file=${CLIPID} \
	--passwd-on-stdin -b )
if test $? != 0;then
	echo "Could not connect to server"
	exit 1
fi

sleep 3

# Verify the IPv6 prefix route from RADIUS Framed-IPv6-Prefix appears in session
MATCH="fd00:abcd:ef00::/48"
${OCCTL} -s ${OCCTL_SOCKET} show user ${USERNAME} >${OUTFILE} 2>&1
grep "${MATCH}" ${OUTFILE}
if test $? != 0;then
	cat ${OUTFILE}
	echo "IPv6 prefix route from RADIUS Framed-IPv6-Prefix not found in session"
	exit 1
fi

exit 0