# Otherwise, install the latest pyenv from github.
  if command -v brew &> /dev/null && brew list pyenv &> /dev/null; then
    # On "ventura-slcn" VMs, pyenv is managed via Homebrew.
    echo "pyenv is installed and managed by homebrew."
    (brew update && brew upgrade pyenv) || true
  else
    echo "pyenv is not managed by homebrew. Installing it via github..."

SCRIPT_DIR="$( cd "$( dirname "$0" )" && pwd )"
cd "$SCRIPT_DIR"

which wstest
if [ $? != 0 ]; then
  echo "Run 'pip install autobahntestsuite', maybe with 'sudo'."
  exit 1
fi
which jq
if [ $? != 0 ]; then
  echo "Run 'brew install jq'"
  exit 1
fi

trap 'kill $(jobs -pr)' SIGINT SIGTERM EXIT

set -ex

wstest -m fuzzingserver -s fuzzingserver-config.json &
sleep 2 # wait for wstest to start

 * https://lauri.võsandi.com/2017/03/yubikey-for-ssh-auth.html
 *
 * Using PKCS11 support in the JDK.
 * https://tersesystems.com/blog/2018/09/08/keymanagers-and-keystores/
 *
 * Install OpenSC separately. On a mac `brew cast install opensc`.
 */
@SuppressSignatureCheck
class YubikeyClientAuth {
  fun run() {
    // The typical PKCS11 slot, may vary with different hardware.
    val slot = 0