#!/usr/bin/env bash

# Copyright (c) 2021-2025 community-scripts ORG
# Author: FWiegerinck
# License: MIT
# Source: https://github.com/smallstep/certificates

# Import Functions und Setup
source /dev/stdin <<< "$FUNCTIONS_FILE_PATH"
color
verb_ip6
catch_errors
setting_up_container
network_check
update_os

# Installing Dependencies
#msg_info "Installing Dependencies"
$STD apk add newt
$STD apk add openssl
#msg_ok "Installed Dependencies"

msg_info "Preparing environment"
$STD echo "export STEPPATH=/etc/step-ca" > ~/.profile
$STD export STEPPATH=/etc/step-ca

if [ "$VERBOSE" = "yes" ]; then
  env #Display environment details
fi

#x509_policy_dns=($(echo "${CA_X509_POLICY_DNS}" | tr ' ' '\n'))
#x509_policy_ips=($(echo "${CA_X509_POLICY_IPS}" | tr ' ' '\n'))

msg_ok "Environment prepared"

msg_info "Installing Alpine Step-CA"
$STD apk add step-cli step-certificates
msg_ok "Installed Alpine Step-CA"

# Initialize CA
config_dir="/etc/step-ca"
passwd_file="${config_dir}/password.txt"
ca_admin_provisioner="Admin JWK"
ca_admin_subject="admin@localhost"
ca_admin_provisioner_passwd_file="${config_dir}/admin-jwk-password.txt"

msg_info "Generate CA secrets"

CA_PASS="$(openssl rand -base64 18 | tr -dc 'a-zA-Z0-9' | cut -c1-13)"
$STD cat <<EOF >${passwd_file}
${CA_PASS}
EOF

CA_ADMIN_PASS="$(openssl rand -base64 18 | tr -dc 'a-zA-Z0-9' | cut -c1-13)"
$STD cat <<EOF >${ca_admin_provisioner_passwd_file}
${CA_ADMIN_PASS}
EOF

chmod 600 ${passwd_file}
chmod 600 ${ca_admin_provisioner_passwd_file}

msg_ok "Generated CA secrets"


msg_info "Initialize base CA"

# Do initialize and immediately start it for further configuration
$STD step ca init --name "${CA_NAME}" --dns localhost $CA_DNS --password-file ${passwd_file} --deployment-type standalone --address ":443" --provisioner "${ca_admin_provisioner}" --admin-subject "${ca_admin_subject}" --provisioner-password-file ${ca_admin_provisioner_passwd_file} --remote-management
$STD rc-service step-ca start

# Verify whether CA policy is requested
if [ -n "${CA_X509_POLICY_DNS}" ] || [ -n "${CA_X509_POLICY_IPS}" ]; then

  # Ensure admin subject is added to the allow list
  $STD step ca policy authority x509 allow dns "${ca_admin_subject}" --admin-provisioner "${ca_admin_provisioner}" --admin-subject "${ca_admin_subject}" --password-file ${ca_admin_provisioner_passwd_file}

  if [ -n "${CA_X509_POLICY_DNS}" ]; then
    $STD step ca policy authority x509 allow dns ${CA_X509_POLICY_DNS} --admin-provisioner "${ca_admin_provisioner}" --admin-subject "${ca_admin_subject}" --password-file ${ca_admin_provisioner_passwd_file}
  fi
  if [ -n "${CA_X509_POLICY_IPS}" ]; then
    $STD step ca policy authority x509 allow ip ${CA_X509_POLICY_IPS} --admin-provisioner "${ca_admin_provisioner}" --admin-subject "${ca_admin_subject}" --password-file ${ca_admin_provisioner_passwd_file}
  fi

  #for dns_entry in "${x509_policy_dns[@]}"; do
  #  $STD step ca policy authority x509 allow dns "${dns_entry}"
  #done
  #for ip_entry in "${x509_policy_ips[@]}"; do
  #  $STD step ca policy authority x509 allow ip ${ip_entry}
  #done
fi

if [ "${CA_ACME}" = "yes" ]; then
  msg_info "Initialize ACME for CA"
  $STD step ca provisioner add "${CA_ACME_NAME}" --type ACME --x509-min-dur=20m --x509-max-dur=32h --x509-default-dur=24h --admin-provisioner "${ca_admin_provisioner}" --admin-subject "${ca_admin_subject}" --password-file ${ca_admin_provisioner_passwd_file}
fi
msg_ok "Finished initialization of CA"

# Start application
msg_info "Starting Alpine Step-CA"
$STD rc-service step-ca restart
$STD rc-update add step-ca default
msg_ok "Started Alpine Step-CA"

motd_ssh
# Extend motd with step-ca fingerprint of root CA
MOTD_FILE="/etc/motd"
if [ -f "$MOTD_FILE" ]; then
  ca_root_fingerprint=$(step certificate fingerprint ${STEPPATH}/certs/root_ca.crt)
  echo -e "\n${TAB}${DEFAULT}${YW} Fingerprint CA Root Certificate: ${GN}${ca_root_fingerprint}${CL}" >> "$MOTD_FILE"
fi

customize