mbedtls/tests/compat.sh
2014-03-14 08:41:02 +01:00

639 lines
23 KiB
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Executable File

#!/bin/bash
# Test interop with OpenSSL for each common ciphersuite and version.
# Also test selfop for ciphersuites not shared with OpenSSL.
let "tests = 0"
let "failed = 0"
let "skipped = 0"
# default values, can be overriden by the environment
: ${P_SRV:=../programs/ssl/ssl_server2}
: ${P_CLI:=../programs/ssl/ssl_client2}
: ${OPENSSL:=openssl}
MODES="ssl3 tls1 tls1_1 tls1_2"
VERIFIES="NO YES"
TYPES="ECDSA RSA PSK"
FILTER=""
VERBOSE=""
print_usage() {
echo "Usage: $0"
echo -e " -f|--filter\tFilter ciphersuites to test (Default: all)"
echo -e " -h|--help\t\tPrint this help."
echo -e " -m|--modes\tWhich modes to perform (Default: \"ssl3 tls1 tls1_1 tls1_2\")"
echo -e " -t|--types\tWhich key exchange type to perform (Default: \"ECDSA RSA PSK\")"
echo -e " -V|--verify\tWhich verification modes to perform (Default: \"NO YES\")"
echo -e " -v|--verbose\t\tSet verbose output."
}
get_options() {
while [ $# -gt 0 ]; do
case "$1" in
-f|--filter)
shift; FILTER=$1
;;
-m|--modes)
shift; MODES=$1
;;
-t|--types)
shift; TYPES=$1
;;
-V|--verify)
shift; VERIFIES=$1
;;
-v|--verbose)
VERBOSE=1
;;
-h|--help)
print_usage
exit 0
;;
*)
echo "Unknown argument: '$1'"
print_usage
exit 1
;;
esac
shift
done
}
log() {
if [ "X" != "X$VERBOSE" ]; then
echo "$@"
fi
}
filter()
{
LIST=$1
FILTER=$2
NEW_LIST=""
for i in $LIST;
do
NEW_LIST="$NEW_LIST $( echo "$i" | grep "$FILTER" )"
done
# normalize whitespace
echo "$NEW_LIST" | sed -e 's/[[:space:]]\+/ /g' -e 's/^ //' -e 's/ $//'
}
setup_ciphersuites()
{
P_CIPHERS=""
O_CIPHERS=""
case $TYPE in
"ECDSA")
if [ "$MODE" != "ssl3" ];
then
P_CIPHERS="$P_CIPHERS \
TLS-ECDHE-ECDSA-WITH-NULL-SHA \
TLS-ECDHE-ECDSA-WITH-RC4-128-SHA \
TLS-ECDHE-ECDSA-WITH-3DES-EDE-CBC-SHA \
TLS-ECDHE-ECDSA-WITH-AES-128-CBC-SHA \
TLS-ECDHE-ECDSA-WITH-AES-256-CBC-SHA \
TLS-ECDH-ECDSA-WITH-NULL-SHA \
TLS-ECDH-ECDSA-WITH-RC4-128-SHA \
TLS-ECDH-ECDSA-WITH-3DES-EDE-CBC-SHA \
TLS-ECDH-ECDSA-WITH-AES-128-CBC-SHA \
TLS-ECDH-ECDSA-WITH-AES-256-CBC-SHA \
"
O_CIPHERS="$O_CIPHERS \
ECDHE-ECDSA-NULL-SHA \
ECDHE-ECDSA-RC4-SHA \
ECDHE-ECDSA-DES-CBC3-SHA \
ECDHE-ECDSA-AES128-SHA \
ECDHE-ECDSA-AES256-SHA \
ECDH-ECDSA-NULL-SHA \
ECDH-ECDSA-RC4-SHA \
ECDH-ECDSA-DES-CBC3-SHA \
ECDH-ECDSA-AES128-SHA \
ECDH-ECDSA-AES256-SHA \
"
fi
if [ "$MODE" = "tls1_2" ];
then
P_CIPHERS="$P_CIPHERS \
TLS-ECDHE-ECDSA-WITH-AES-128-CBC-SHA256 \
TLS-ECDHE-ECDSA-WITH-AES-256-CBC-SHA384 \
TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256 \
TLS-ECDHE-ECDSA-WITH-AES-256-GCM-SHA384 \
TLS-ECDH-ECDSA-WITH-AES-128-CBC-SHA256 \
TLS-ECDH-ECDSA-WITH-AES-256-CBC-SHA384 \
TLS-ECDH-ECDSA-WITH-AES-128-GCM-SHA256 \
TLS-ECDH-ECDSA-WITH-AES-256-GCM-SHA384 \
"
O_CIPHERS="$O_CIPHERS \
ECDHE-ECDSA-AES128-SHA256 \
ECDHE-ECDSA-AES256-SHA384 \
ECDHE-ECDSA-AES128-GCM-SHA256 \
ECDHE-ECDSA-AES256-GCM-SHA384 \
ECDH-ECDSA-AES128-SHA256 \
ECDH-ECDSA-AES256-SHA384 \
ECDH-ECDSA-AES128-GCM-SHA256 \
ECDH-ECDSA-AES256-GCM-SHA384 \
"
fi
;;
"RSA")
P_CIPHERS="$P_CIPHERS \
TLS-DHE-RSA-WITH-AES-128-CBC-SHA \
TLS-DHE-RSA-WITH-AES-256-CBC-SHA \
TLS-DHE-RSA-WITH-CAMELLIA-128-CBC-SHA \
TLS-DHE-RSA-WITH-CAMELLIA-256-CBC-SHA \
TLS-DHE-RSA-WITH-3DES-EDE-CBC-SHA \
TLS-RSA-WITH-AES-256-CBC-SHA \
TLS-RSA-WITH-CAMELLIA-256-CBC-SHA \
TLS-RSA-WITH-AES-128-CBC-SHA \
TLS-RSA-WITH-CAMELLIA-128-CBC-SHA \
TLS-RSA-WITH-3DES-EDE-CBC-SHA \
TLS-RSA-WITH-RC4-128-SHA \
TLS-RSA-WITH-RC4-128-MD5 \
TLS-RSA-WITH-NULL-MD5 \
TLS-RSA-WITH-NULL-SHA \
TLS-RSA-WITH-DES-CBC-SHA \
TLS-DHE-RSA-WITH-DES-CBC-SHA \
"
O_CIPHERS="$O_CIPHERS \
DHE-RSA-AES128-SHA \
DHE-RSA-AES256-SHA \
DHE-RSA-CAMELLIA128-SHA \
DHE-RSA-CAMELLIA256-SHA \
EDH-RSA-DES-CBC3-SHA \
AES256-SHA \
CAMELLIA256-SHA \
AES128-SHA \
CAMELLIA128-SHA \
DES-CBC3-SHA \
RC4-SHA \
RC4-MD5 \
NULL-MD5 \
NULL-SHA \
DES-CBC-SHA \
EDH-RSA-DES-CBC-SHA \
"
if [ "$MODE" != "ssl3" ];
then
P_CIPHERS="$P_CIPHERS \
TLS-ECDHE-RSA-WITH-AES-128-CBC-SHA \
TLS-ECDHE-RSA-WITH-AES-256-CBC-SHA \
TLS-ECDHE-RSA-WITH-3DES-EDE-CBC-SHA \
TLS-ECDHE-RSA-WITH-RC4-128-SHA \
TLS-ECDHE-RSA-WITH-NULL-SHA \
"
O_CIPHERS="$O_CIPHERS \
ECDHE-RSA-AES256-SHA \
ECDHE-RSA-AES128-SHA \
ECDHE-RSA-DES-CBC3-SHA \
ECDHE-RSA-RC4-SHA \
ECDHE-RSA-NULL-SHA \
"
fi
if [ "$MODE" = "tls1_2" ];
then
P_CIPHERS="$P_CIPHERS \
TLS-RSA-WITH-NULL-SHA256 \
TLS-RSA-WITH-AES-128-CBC-SHA256 \
TLS-DHE-RSA-WITH-AES-128-CBC-SHA256 \
TLS-RSA-WITH-AES-256-CBC-SHA256 \
TLS-DHE-RSA-WITH-AES-256-CBC-SHA256 \
TLS-ECDHE-RSA-WITH-AES-128-CBC-SHA256 \
TLS-ECDHE-RSA-WITH-AES-256-CBC-SHA384 \
TLS-RSA-WITH-AES-128-GCM-SHA256 \
TLS-RSA-WITH-AES-256-GCM-SHA384 \
TLS-DHE-RSA-WITH-AES-128-GCM-SHA256 \
TLS-DHE-RSA-WITH-AES-256-GCM-SHA384 \
TLS-ECDHE-RSA-WITH-AES-128-GCM-SHA256 \
TLS-ECDHE-RSA-WITH-AES-256-GCM-SHA384 \
"
O_CIPHERS="$O_CIPHERS \
NULL-SHA256 \
AES128-SHA256 \
DHE-RSA-AES128-SHA256 \
AES256-SHA256 \
DHE-RSA-AES256-SHA256 \
ECDHE-RSA-AES128-SHA256 \
ECDHE-RSA-AES256-SHA384 \
AES128-GCM-SHA256 \
DHE-RSA-AES128-GCM-SHA256 \
AES256-GCM-SHA384 \
DHE-RSA-AES256-GCM-SHA384 \
ECDHE-RSA-AES128-GCM-SHA256 \
ECDHE-RSA-AES256-GCM-SHA384 \
"
fi
;;
"PSK")
P_CIPHERS="$P_CIPHERS \
TLS-PSK-WITH-RC4-128-SHA \
TLS-PSK-WITH-3DES-EDE-CBC-SHA \
TLS-PSK-WITH-AES-128-CBC-SHA \
TLS-PSK-WITH-AES-256-CBC-SHA \
"
O_CIPHERS="$O_CIPHERS \
PSK-RC4-SHA \
PSK-3DES-EDE-CBC-SHA \
PSK-AES128-CBC-SHA \
PSK-AES256-CBC-SHA \
"
;;
esac
# Filter ciphersuites
if [ "X" != "X$FILTER" ];
then
O_CIPHERS=$( filter "$O_CIPHERS" "$FILTER" )
P_CIPHERS=$( filter "$P_CIPHERS" "$FILTER" )
fi
}
add_polarssl_ciphersuites()
{
ADD_CIPHERS=""
case $TYPE in
"ECDSA")
if [ "$MODE" != "ssl3" ];
then
ADD_CIPHERS="$ADD_CIPHERS \
TLS-ECDHE-ECDSA-WITH-CAMELLIA-128-CBC-SHA256 \
TLS-ECDHE-ECDSA-WITH-CAMELLIA-256-CBC-SHA384 \
TLS-ECDH-ECDSA-WITH-CAMELLIA-128-CBC-SHA256 \
TLS-ECDH-ECDSA-WITH-CAMELLIA-256-CBC-SHA384 \
"
fi
if [ "$MODE" = "tls1_2" ];
then
ADD_CIPHERS="$ADD_CIPHERS \
TLS-ECDHE-ECDSA-WITH-CAMELLIA-128-GCM-SHA256 \
TLS-ECDHE-ECDSA-WITH-CAMELLIA-256-GCM-SHA384 \
TLS-ECDH-ECDSA-WITH-CAMELLIA-128-GCM-SHA256 \
TLS-ECDH-ECDSA-WITH-CAMELLIA-256-GCM-SHA384 \
"
fi
;;
"RSA")
if [ "$MODE" != "ssl3" ];
then
ADD_CIPHERS="$ADD_CIPHERS \
TLS-ECDHE-RSA-WITH-CAMELLIA-128-CBC-SHA256 \
TLS-ECDHE-RSA-WITH-CAMELLIA-256-CBC-SHA384 \
"
fi
if [ "$MODE" = "tls1_2" ];
then
ADD_CIPHERS="$ADD_CIPHERS \
TLS-RSA-WITH-CAMELLIA-128-CBC-SHA256 \
TLS-RSA-WITH-CAMELLIA-256-CBC-SHA256 \
TLS-DHE-RSA-WITH-CAMELLIA-128-CBC-SHA256 \
TLS-DHE-RSA-WITH-CAMELLIA-256-CBC-SHA256 \
TLS-ECDHE-RSA-WITH-CAMELLIA-128-GCM-SHA256 \
TLS-ECDHE-RSA-WITH-CAMELLIA-256-GCM-SHA384 \
TLS-DHE-RSA-WITH-CAMELLIA-128-GCM-SHA256 \
TLS-DHE-RSA-WITH-CAMELLIA-256-GCM-SHA384 \
TLS-RSA-WITH-CAMELLIA-128-GCM-SHA256 \
TLS-RSA-WITH-CAMELLIA-256-GCM-SHA384 \
"
fi
;;
"PSK")
ADD_CIPHERS="$ADD_CIPHERS \
TLS-DHE-PSK-WITH-RC4-128-SHA \
TLS-DHE-PSK-WITH-3DES-EDE-CBC-SHA \
TLS-DHE-PSK-WITH-AES-128-CBC-SHA \
TLS-DHE-PSK-WITH-AES-256-CBC-SHA \
TLS-DHE-PSK-WITH-NULL-SHA \
TLS-PSK-WITH-NULL-SHA \
TLS-RSA-PSK-WITH-RC4-128-SHA \
TLS-RSA-PSK-WITH-3DES-EDE-CBC-SHA \
TLS-RSA-PSK-WITH-AES-256-CBC-SHA \
TLS-RSA-PSK-WITH-AES-128-CBC-SHA \
TLS-RSA-WITH-NULL-SHA \
TLS-RSA-WITH-NULL-MD5 \
TLS-PSK-WITH-AES-128-CBC-SHA256 \
TLS-PSK-WITH-AES-256-CBC-SHA384 \
TLS-DHE-PSK-WITH-AES-128-CBC-SHA256 \
TLS-DHE-PSK-WITH-AES-256-CBC-SHA384 \
TLS-PSK-WITH-NULL-SHA256 \
TLS-PSK-WITH-NULL-SHA384 \
TLS-DHE-PSK-WITH-NULL-SHA256 \
TLS-DHE-PSK-WITH-NULL-SHA384 \
TLS-RSA-PSK-WITH-AES-256-CBC-SHA384 \
TLS-RSA-PSK-WITH-AES-128-CBC-SHA256 \
TLS-RSA-PSK-WITH-NULL-SHA256 \
TLS-RSA-PSK-WITH-NULL-SHA384 \
TLS-DHE-PSK-WITH-CAMELLIA-128-CBC-SHA256 \
TLS-DHE-PSK-WITH-CAMELLIA-256-CBC-SHA384 \
TLS-PSK-WITH-CAMELLIA-128-CBC-SHA256 \
TLS-PSK-WITH-CAMELLIA-256-CBC-SHA384 \
TLS-RSA-PSK-WITH-CAMELLIA-256-CBC-SHA384 \
TLS-RSA-PSK-WITH-CAMELLIA-128-CBC-SHA256 \
"
if [ "$MODE" != "ssl3" ];
then
ADD_CIPHERS="$ADD_CIPHERS \
TLS-ECDHE-PSK-WITH-AES-256-CBC-SHA \
TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA \
TLS-ECDHE-PSK-WITH-3DES-EDE-CBC-SHA \
TLS-ECDHE-PSK-WITH-RC4-128-SHA \
TLS-ECDHE-PSK-WITH-NULL-SHA \
TLS-ECDHE-PSK-WITH-AES-256-CBC-SHA384 \
TLS-ECDHE-PSK-WITH-CAMELLIA-256-CBC-SHA384 \
TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA256 \
TLS-ECDHE-PSK-WITH-CAMELLIA-128-CBC-SHA256 \
TLS-ECDHE-PSK-WITH-NULL-SHA384 \
TLS-ECDHE-PSK-WITH-NULL-SHA256 \
"
fi
if [ "$MODE" = "tls1_2" ];
then
ADD_CIPHERS="$ADD_CIPHERS \
TLS-PSK-WITH-AES-128-GCM-SHA256 \
TLS-PSK-WITH-AES-256-GCM-SHA384 \
TLS-DHE-PSK-WITH-AES-128-GCM-SHA256 \
TLS-DHE-PSK-WITH-AES-256-GCM-SHA384 \
TLS-RSA-PSK-WITH-CAMELLIA-128-GCM-SHA256 \
TLS-RSA-PSK-WITH-CAMELLIA-256-GCM-SHA384 \
TLS-PSK-WITH-CAMELLIA-128-GCM-SHA256 \
TLS-PSK-WITH-CAMELLIA-256-GCM-SHA384 \
TLS-DHE-PSK-WITH-CAMELLIA-128-GCM-SHA256 \
TLS-DHE-PSK-WITH-CAMELLIA-256-GCM-SHA384 \
TLS-RSA-PSK-WITH-AES-256-GCM-SHA384 \
TLS-RSA-PSK-WITH-AES-128-GCM-SHA256 \
TLS-RSA-WITH-NULL-SHA256 \
"
fi
;;
esac
# Filter new ciphersuites and add them
if [ "X" != "X$FILTER" ]; then
ADD_CIPHERS=$( filter "$ADD_CIPHERS" "$FILTER" )
fi
# avoid P_CIPHERS being only ' '
if [ "X" != "X$P_CIPHERS" ]; then
P_CIPHERS="$P_CIPHERS $ADD_CIPHERS"
else
P_CIPHERS="$ADD_CIPHERS"
fi
}
setup_arguments()
{
# avoid an avalanche of errors due to typos
case $MODE in
ssl3|tls1|tls1_1|tls1_2)
;;
*)
echo "error: invalid mode: $MODE" >&2
exit 1;
esac
P_SERVER_ARGS="server_addr=0.0.0.0 force_version=$MODE"
P_CLIENT_ARGS="server_name=localhost force_version=$MODE"
O_SERVER_ARGS="-www -quiet -cipher NULL,ALL -$MODE"
O_CLIENT_ARGS="-$MODE"
if [ "X$VERIFY" = "XYES" ];
then
P_SERVER_ARGS="$P_SERVER_ARGS ca_file=data_files/test-ca_cat12.crt auth_mode=required"
P_CLIENT_ARGS="$P_CLIENT_ARGS ca_file=data_files/test-ca_cat12.crt auth_mode=required"
O_SERVER_ARGS="$O_SERVER_ARGS -CAfile data_files/test-ca_cat12.crt -Verify 10"
O_CLIENT_ARGS="$O_CLIENT_ARGS -CAfile data_files/test-ca_cat12.crt -verify 10"
else
# ssl_server2 defaults to optional, but we want to test handshakes
# that don't exchange client certificate at all too
P_SERVER_ARGS="$P_SERVER_ARGS ca_file=data_files/test-ca_cat12.crt auth_mode=none"
fi
case $TYPE in
"ECDSA")
P_SERVER_ARGS="$P_SERVER_ARGS crt_file=data_files/server5.crt key_file=data_files/server5.key"
P_CLIENT_ARGS="$P_CLIENT_ARGS crt_file=data_files/server6.crt key_file=data_files/server6.key"
O_SERVER_ARGS="$O_SERVER_ARGS -cert data_files/server5.crt -key data_files/server5.key"
O_CLIENT_ARGS="$O_CLIENT_ARGS -cert data_files/server6.crt -key data_files/server6.key"
;;
"RSA")
P_SERVER_ARGS="$P_SERVER_ARGS crt_file=data_files/server2.crt key_file=data_files/server2.key"
P_CLIENT_ARGS="$P_CLIENT_ARGS crt_file=data_files/server1.crt key_file=data_files/server1.key"
O_SERVER_ARGS="$O_SERVER_ARGS -cert data_files/server2.crt -key data_files/server2.key"
O_CLIENT_ARGS="$O_CLIENT_ARGS -cert data_files/server1.crt -key data_files/server1.key"
;;
"PSK")
P_SERVER_ARGS="$P_SERVER_ARGS psk=6162636465666768696a6b6c6d6e6f70"
P_CLIENT_ARGS="$P_CLIENT_ARGS psk=6162636465666768696a6b6c6d6e6f70"
# openssl s_server won't start without certificates...
O_SERVER_ARGS="$O_SERVER_ARGS -psk 6162636465666768696a6b6c6d6e6f70 -cert data_files/server1.crt -key data_files/server1.key"
O_CLIENT_ARGS="$O_CLIENT_ARGS -psk 6162636465666768696a6b6c6d6e6f70"
;;
esac
}
# start_server <name>
# also saves name and command
start_server() {
case $1 in
[Oo]pen*)
SERVER_CMD="$OPENSSL s_server $O_SERVER_ARGS"
;;
[Pp]olar*)
SERVER_CMD="$P_SRV $P_SERVER_ARGS"
;;
*)
echo "error: invalid server name: $1" >&2
exit 1
;;
esac
SERVER_NAME=$1
log "$SERVER_CMD"
$SERVER_CMD >srv_out 2>&1 &
PROCESS_ID=$!
sleep 1
}
# terminate the running server (closing it cleanly if it is ours)
stop_server() {
case $SERVER_NAME in
[Pp]olar*)
# we must force a PSK suite when in PSK mode (otherwise client
# auth will fail), so use $O_CIPHERS
CS=$( echo "$O_CIPHERS" | tr ' ' ':' )
echo SERVERQUIT | \
$OPENSSL s_client $O_CLIENT_ARGS -cipher "$CS" >/dev/null 2>&1
;;
*)
kill $PROCESS_ID 2>/dev/null
esac
wait $PROCESS_ID 2>/dev/null
rm -f srv_out
}
# kill the running server (used when killed by signal)
cleanup() {
rm -f srv_out cli_out
kill $PROCESS_ID
exit 1
}
# run_client <name> <cipher>
run_client() {
# announce what we're going to do
let "tests++"
VERIF=$(echo $VERIFY | tr '[:upper:]' '[:lower:]')
TITLE="${1:0:1}->${SERVER_NAME:0:1} $MODE,$VERIF $2 "
echo -n "$TITLE"
LEN=`echo "$TITLE" | wc -c`
LEN=`echo 72 - $LEN | bc`
for i in `seq 1 $LEN`; do echo -n '.'; done; echo -n ' '
# run the command and interpret result
case $1 in
[Oo]pen*)
CLIENT_CMD="$OPENSSL s_client $O_CLIENT_ARGS -cipher $2"
log "$CLIENT_CMD"
( echo -e 'GET HTTP/1.0'; echo; ) | $CLIENT_CMD > cli_out 2>&1
EXIT=$?
if [ "$EXIT" == "0" ]; then
RESULT=0
else
if grep 'Cipher is (NONE)' cli_out >/dev/null; then
RESULT=1
else
RESULT=2
fi
fi
;;
[Pp]olar*)
CLIENT_CMD="$P_CLI $P_CLIENT_ARGS force_ciphersuite=$2"
log "$CLIENT_CMD"
$CLIENT_CMD > cli_out
EXIT=$?
case $EXIT in
"0") RESULT=0 ;;
"2") RESULT=1 ;;
*) RESULT=2 ;;
esac
;;
*)
echo "error: invalid client name: $1" >&2
exit 1
;;
esac
# report and count result
case $RESULT in
"0")
echo PASS
;;
"1")
echo SKIP
let "skipped++"
;;
"2")
echo FAIL
echo " ! $SERVER_CMD"
echo " ! $CLIENT_CMD"
echo -n " ! ... "
tail -n1 cli_out
let "failed++"
;;
esac
rm -f cli_out
}
#
# MAIN
#
# sanity checks, avoid an avalanche of errors
if [ ! -x "$P_SRV" ]; then
echo "Command '$P_SRV' is not an executable file"
exit 1
fi
if [ ! -x "$P_CLI" ]; then
echo "Command '$P_CLI' is not an executable file"
exit 1
fi
if which $OPENSSL >/dev/null 2>&1; then :; else
echo "Command '$OPENSSL' not found"
exit 1
fi
get_options "$@"
killall -q openssl ssl_server ssl_server2
trap cleanup INT TERM HUP
for VERIFY in $VERIFIES; do
for MODE in $MODES; do
for TYPE in $TYPES; do
setup_arguments
setup_ciphersuites
if [ "X" != "X$P_CIPHERS" ]; then
start_server "OpenSSL"
for i in $P_CIPHERS; do
run_client PolarSSL $i
done
stop_server
fi
if [ "X" != "X$O_CIPHERS" ]; then
start_server "PolarSSL"
for i in $O_CIPHERS; do
run_client OpenSSL $i
done
stop_server
fi
add_polarssl_ciphersuites
if [ "X" != "X$P_CIPHERS" ]; then
start_server "PolarSSL"
for i in $P_CIPHERS; do
run_client PolarSSL $i
done
stop_server
fi
done
done
done
echo "------------------------------------------------------------------------"
if (( failed != 0 ));
then
echo -n "FAILED"
else
echo -n "PASSED"
fi
let "passed = tests - failed"
echo " ($passed / $tests tests ($skipped skipped))"
exit $failed