Emun cipher suite of website (only use openssl)

enum-ciphersuite.sh

SERVER=$1
DELAY=1
ciphers=$(openssl ciphers 'ALL:eNULL' | sed -e 's/:/ /g')

echo Enum cipher list from $(openssl version).
echo "========================"

for cipher in ${ciphers[@]}
do
result=$(echo -n | openssl s_client -cipher "$cipher" -connect $SERVER 2>&1)
if [[ "$result" =~ ":error:" ]] ; then
    a=1
else
  if [[ "$result" =~ "Cipher is ${cipher}" || "$result" =~ "Cipher    :" ]] ; then
    echo ${cipher}
  fi
fi
sleep $DELAY
done

# ./enum-ciphersuite.sh www.hahwul.com:443
# Enum cipher list from LibreSSL 2.8.3.
# ========================
# ECDHE-RSA-AES256-GCM-SHA384
# ECDHE-RSA-AES256-SHA384
# ECDHE-RSA-AES256-SHA
# ...