#!/bin/bash
#
# Copyright (C) 2019 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/>.
#

# This tests operation/traffic under compression (lzs or lz4).

OCCTL="${OCCTL:-../src/occtl/occtl}"
SERV="${SERV:-../src/ocserv}"
srcdir=${srcdir:-.}
PORT=5647
PIDFILE=ocserv-pid.$$.tmp
CLIPID=oc-pid.$$.tmp
PATH=${PATH}:/usr/sbin
IP=$(which ip)
OUTFILE=traffic.$$.tmp

USERNAME=krb5user
USERPASS=krb5user123


. `dirname $0`/common.sh

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

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

if ! test -f /etc/krb5.conf && ! test -f /var/kerberos/krb5kdc/kdc.conf;then
	echo "This test must be run on a KDC-running system"
	exit 1
fi

echo "Testing ocserv with kerberos... "

function finish {
  set +e
  echo " * Cleaning up..."
  test -n "${PID}" && kill ${PID} >/dev/null 2>&1
  test -n "${KRB5PID}" && kill ${KRB5PID} >/dev/null 2>&1
  test -n "${PIDFILE}" && rm -f ${PIDFILE} >/dev/null 2>&1
  test -n "${CLIPID}" && kill $(cat ${CLIPID}) >/dev/null 2>&1
  test -n "${CLIPID}" && rm -f ${CLIPID} >/dev/null 2>&1
  test -n "${CONFIG}" && rm -f ${CONFIG} >/dev/null 2>&1
  rm -f ${OUTFILE} 2>&1
}
trap finish EXIT

# server address
ADDRESS=10.97.216.1
CLI_ADDRESS=10.97.217.1

VPNNET=192.168.1.0/24
VPNADDR=192.168.1.1
VPNNET6=fd91:6d87:7341:db6a::/112
VPNADDR6=fd91:6d87:7341:db6a::1
OCCTL_SOCKET=./occtl-radius-$$.socket

. `dirname $0`/ns.sh

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

# Run KDC
# This is destructive at the moment as it changes the system that it is being run.
echo -e "secret123\nsecret123"|/usr/sbin/kdb5_util create -s

echo " * added ${USERNAME}"
echo -e "${USERPASS}\n${USERPASS}" | /usr/sbin/kadmin.local -q "addprinc ${USERNAME}"
echo -e "test123\ntest123" | /usr/sbin/kadmin.local -q "addprinc HTTP/kerberos.test"
/usr/sbin/kadmin.local -q "xst -norandkey -k /etc/krb5-keytab HTTP/kerberos.test@KERBEROS.TEST"

${CMDNS2} /usr/sbin/krb5kdc &
KRB5PID=$!

sleep 2

export TEST_PAMDIR=data/pam-kerberos
update_config kerberos.config
if test "$VERBOSE" = 1;then
DEBUG="-d 3"
fi

# Run ocserv
PREPEND_CMD=${CMDNS2}
launch_pam_server -d 1 -f -c ${CONFIG} & PID=$!
PREPEND_CMD=""

sleep 5

echo " * Getting cookie via PAM from ${ADDRESS}:${PORT}..."
( echo "${USERPASS}" | ${CMDNS1} ${OPENCONNECT} ${ADDRESS}:${PORT} -u ${USERNAME} --servercert=d66b507ae074d03b02eafca40d35f87dd81049d3 --cookieonly )
if test $? != 0;then
	echo "Could not get cookie from server"
	exit 1
fi

${CMDNS1} echo ${USERPASS}|kinit ${USERNAME}@KERBEROS.TEST

echo " * Connecting via krb5 to ${ADDRESS}:${PORT}..."
( ${CMDNS1} ${OPENCONNECT} ${ADDRESS}:${PORT} --servercert=d66b507ae074d03b02eafca40d35f87dd81049d3 -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

${CMDNS1} ping -w 5 ${VPNADDR}
if test $? != 0;then
	echo "Could not ping server IP"
	exit 1
fi

${CMDNS2} ping -w 3 ${CLIVPNADDR}
if test $? != 0;then
	echo "Could not ping client IP"
	exit 1
fi

sleep 60

echo " * Connecting via krb5 and non-fresh ticket to ${ADDRESS}:${PORT}..."
( ${CMDNS1} ${OPENCONNECT} ${ADDRESS}:${PORT} --servercert=d66b507ae074d03b02eafca40d35f87dd81049d3 -s ${srcdir}/scripts/vpnc-script --pid-file=${CLIPID} --passwd-on-stdin -b )
if test $? = 0;then
	echo "Could connect to server although not expected"
	exit 1
fi


exit 0