openssh/regress/agent-pkcs11.sh

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# $OpenBSD: agent-pkcs11.sh,v 1.9 2021/07/25 12:13:03 dtucker Exp $
# Placed in the Public Domain.
tid="pkcs11 agent test"
try_token_libs() {
for _lib in "$@" ; do
if test -f "$_lib" ; then
verbose "Using token library $_lib"
TEST_SSH_PKCS11="$_lib"
return
fi
done
echo "skipped: Unable to find PKCS#11 token library"
exit 0
}
try_token_libs \
/usr/local/lib/softhsm/libsofthsm2.so \
/usr/lib64/pkcs11/libsofthsm2.so \
/usr/lib/x86_64-linux-gnu/softhsm/libsofthsm2.so
TEST_SSH_PIN=1234
TEST_SSH_SOPIN=12345678
if [ "x$TEST_SSH_SSHPKCS11HELPER" != "x" ]; then
SSH_PKCS11_HELPER="${TEST_SSH_SSHPKCS11HELPER}"
export SSH_PKCS11_HELPER
fi
test -f "$TEST_SSH_PKCS11" || fatal "$TEST_SSH_PKCS11 does not exist"
# setup environment for softhsm2 token
DIR=$OBJ/SOFTHSM
rm -rf $DIR
TOKEN=$DIR/tokendir
mkdir -p $TOKEN
SOFTHSM2_CONF=$DIR/softhsm2.conf
export SOFTHSM2_CONF
cat > $SOFTHSM2_CONF << EOF
# SoftHSM v2 configuration file
directories.tokendir = ${TOKEN}
objectstore.backend = file
# ERROR, WARNING, INFO, DEBUG
log.level = DEBUG
# If CKF_REMOVABLE_DEVICE flag should be set
slots.removable = false
EOF
out=$(softhsm2-util --init-token --free --label token-slot-0 --pin "$TEST_SSH_PIN" --so-pin "$TEST_SSH_SOPIN")
slot=$(echo -- $out | sed 's/.* //')
# prevent ssh-agent from calling ssh-askpass
SSH_ASKPASS=/usr/bin/true
export SSH_ASKPASS
unset DISPLAY
# start command w/o tty, so ssh-add accepts pin from stdin
notty() {
perl -e 'use POSIX; POSIX::setsid();
if (fork) { wait; exit($? >> 8); } else { exec(@ARGV) }' "$@"
}
trace "generating keys"
RSA=${DIR}/RSA
EC=${DIR}/EC
$OPENSSL_BIN genpkey -algorithm rsa > $RSA
$OPENSSL_BIN pkcs8 -nocrypt -in $RSA |\
softhsm2-util --slot "$slot" --label 01 --id 01 --pin "$TEST_SSH_PIN" --import /dev/stdin
$OPENSSL_BIN genpkey \
-genparam \
-algorithm ec \
-pkeyopt ec_paramgen_curve:prime256v1 |\
$OPENSSL_BIN genpkey \
-paramfile /dev/stdin > $EC
$OPENSSL_BIN pkcs8 -nocrypt -in $EC |\
softhsm2-util --slot "$slot" --label 02 --id 02 --pin "$TEST_SSH_PIN" --import /dev/stdin
trace "start agent"
eval `${SSHAGENT} ${EXTRA_AGENT_ARGS} -s` > /dev/null
r=$?
if [ $r -ne 0 ]; then
fail "could not start ssh-agent: exit code $r"
else
trace "add pkcs11 key to agent"
echo ${TEST_SSH_PIN} | notty ${SSHADD} -s ${TEST_SSH_PKCS11} > /dev/null 2>&1
r=$?
if [ $r -ne 0 ]; then
fail "ssh-add -s failed: exit code $r"
fi
trace "pkcs11 list via agent"
${SSHADD} -l > /dev/null 2>&1
r=$?
if [ $r -ne 0 ]; then
fail "ssh-add -l failed: exit code $r"
fi
for k in $RSA $EC; do
trace "testing $k"
chmod 600 $k
ssh-keygen -y -f $k > $k.pub
pub=$(cat $k.pub)
${SSHADD} -L | grep -q "$pub" || fail "key $k missing in ssh-add -L"
${SSHADD} -T $k.pub || fail "ssh-add -T with $k failed"
# add to authorized keys
cat $k.pub > $OBJ/authorized_keys_$USER
trace "pkcs11 connect via agent ($k)"
${SSH} -F $OBJ/ssh_proxy somehost exit 5
r=$?
if [ $r -ne 5 ]; then
fail "ssh connect failed (exit code $r)"
fi
done
trace "remove pkcs11 keys"
echo ${TEST_SSH_PIN} | notty ${SSHADD} -e ${TEST_SSH_PKCS11} > /dev/null 2>&1
r=$?
if [ $r -ne 0 ]; then
fail "ssh-add -e failed: exit code $r"
fi
trace "kill agent"
${SSHAGENT} -k > /dev/null
fi