#!/bin/sh

set -e
set -u

cd ~/certs

for crt in *-combined.crt; do
  digest=$(openssl rsa -pubout -outform DER < ${crt%-combined.crt}.key 2>/dev/null | sha256sum | awk '{print $1}')

  ports="443"
  portsfile="${crt%-combined.crt}.ports"
  if [ -e "$portsfile" ] ; then
    ports=$(cat "$portsfile")
  fi

  (
  openssl x509 -noout -text < "$crt" | awk '/X509v3 Subject Alternative Name/ {getline;gsub(/ /, "", $0); print}' | tr ',' '\n' | awk -F: '$1=="DNS" {print $2}';
  openssl x509 -noout -subject < "$crt"| sed -e 's/^subject.*CN=\([a-zA-Z0-9\.\-\*]*\).*$/\1/'
  ) | sort -u | while read cn; do
    for port in $ports; do
      #~/swede/swede create --output rfc --usage=3 --selector=1 --mtype=1 --certificate "$crt" --port "$port" "$cn"
      printf "_%d._tcp.%-40s IN TLSA 3 1 1 %s\n" "${port}" "${cn}." "${digest}"
    done
  done
done