Bash: shell script to obtain the cipher list of a server

#!/bin/bash

 

SERVER=$1

 

if [[ "$SERVER" == "" ]]; then

  echo "Usage: $0 hostname:port"

  exit

fi

 

DELAY=2

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

 

for cipher in ${ciphers[@]}

do

  echo -n Testing $cipher ...

  result=$(echo -n | openssl s_client -cipher "$cipher" -connect $SERVER 2>&1)

 

  if [[ "$result" =~ "Session-ID:" ]]; then

    echo "YES"

  else

    if [[ "$result" =~ ":error:" ]]; then

      error=$(echo -n $result | cut -d':' -f6)

      echo "NO \($error\)"

    elif [[ "$result" =~ "errno=104" ]]; then

      echo "NO \(Connection reset by peer\)"

    else

      echo "Unknown response"

    fi

  fi

 

  sleep $DELAY

done