#!/bin/bash
# SPDX-Version: 3.0
# SPDX-CreationInfo: 2025-11-06; WEIDNER, Marc S.; <msw@coresecret.dev>
# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.live.builder.git
# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
# SPDX-FileType: SOURCE
# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
# SPDX-PackageName: CISS.debian.live.builder
# SPDX-Security-Contact: security@coresecret.eu

guard_sourcing || return "${ERR_GUARD_SRCE}"

#######################################
# Integrate primordial SSH identity files.
# Globals:
#   BASH_SOURCE
#   VAR_AGE
#   VAR_AGE_KEY
#   VAR_HANDLER_BUILD_DIR
#   VAR_SSHFP
#   VAR_TMP_SECRET
# Arguments:
#   None
# Returns:
#   0: on success
#######################################
init_primordial() {
  printf "\e[95m++++ ++++ ++++ ++++ ++++ ++++ ++ 🧪 %s starting ... \e[0m\n" "${BASH_SOURCE[0]}"

  ### Check for SOPS AGE key integration ---------------------------------------------------------------------------------------
  if [[ ! "${VAR_AGE,,}" == "true" ]]; then

    if compgen -G "${VAR_TMP_SECRET}/${VAR_AGE_KEY}" > /dev/null; then

      shred -fzu -n 5 -- "${VAR_TMP_SECRET}/${VAR_AGE_KEY}"

    fi

  else

    install -d -m 0700 "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/root/.config/sops/age"
    install -m 0400 "${VAR_TMP_SECRET}/${VAR_AGE_KEY}" "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/root/.config/sops/age/keys.txt"
    shred -fzu -n 5 -- "${VAR_TMP_SECRET}/${VAR_AGE_KEY}" 2>/dev/null || rm -f "${VAR_TMP_SECRET}/${VAR_AGE_KEY}"

  fi

  ### Check for SSH CISS and PhysNet primordial-workflow(tm) integration -------------------------------------------------------
  if [[ ! "${VAR_SSHFP,,}" == "true" ]]; then

    if compgen -G "${VAR_TMP_SECRET}/id*" > /dev/null; then

      shred -fzu -n 5 -- "${VAR_TMP_SECRET}/id"*

    fi

    if compgen -G "${VAR_TMP_SECRET}/ssh_host_*" > /dev/null; then

      shred -fzu -n 5 -- "${VAR_TMP_SECRET}/ssh_host_"*

    fi

  else

    install -d -m 0700 "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/root/.ssh"
    install -m 0600 "${VAR_TMP_SECRET}/id"* "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/root/.ssh/"
    shred -fzu -n 5 -- "${VAR_TMP_SECRET}/id"* 2>/dev/null || rm -f "${VAR_TMP_SECRET}/id"*

    install -d -m 0700 "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/root/ssh"
    install -m 0600 "${VAR_TMP_SECRET}/ssh_host_"* "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/root/ssh/"
    shred -fzu -n 5 -- "${VAR_TMP_SECRET}/ssh_host_"* 2>/dev/null || rm -f "${VAR_TMP_SECRET}/ssh_host_"*

  fi

  printf "\e[92m++++ ++++ ++++ ++++ ++++ ++++ ++ ✅ %s successfully applied. \e[0m\n" "${BASH_SOURCE[0]}"

  return 0
}
### Prevents accidental 'unset -f'.
# shellcheck disable=SC2034
readonly -f init_primordial
# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh