#!/bin/bash
# SPDX-Version: 3.0
# SPDX-CreationInfo: 2025-11-12; 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: LicenseRef-CNCL-1.1 OR LicenseRef-CCLA-1.1
# 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}"

#######################################
# MUST be executed before 'ciss_upgrades_boot()'.
# Module to export GPG FPRs into scripts:
#  - /etc/initramfs-tools/files/unlock_wrapper.sh
#  - /usr/lib/live/boot/0030-ciss-verify-checksums
#  - /etc/initramfs-tools/scripts/init-bottom/0042-ciss-post-decrypt-attest.sh
# Globals:
#   BASH_SOURCE
#   VAR_HANDLER_BUILD_DIR
#   VAR_SIGNING_CA
#   VAR_SIGNING_CA_FPR
#   VAR_SIGNING_KEY_FPR
# Arguments:
#   None
# Returns:
#   0: on success
#######################################
ciss_signatures() {
  printf "\e[95m++++ ++++ ++++ ++++ ++++ ++++ ++ 🧪 %s starting ... \e[0m\n" "${BASH_SOURCE[0]}"

  declare -ar _ary_target=(
    "/etc/initramfs-tools/files/unlock_wrapper.sh"
    "/etc/initramfs-tools/scripts/init-bottom/0042-ciss-post-decrypt-attest.sh"
    "/usr/lib/live/boot/0030-ciss-verify-checksums"
  )

  declare _target="" target=""

  for _target in "${_ary_target[@]}"; do

    declare target="${VAR_HANDLER_BUILD_DIR}/config/includes.chroot${_target}"

    sed -i -e "s|@EXP_FPR@|${VAR_SIGNING_KEY_FPR}|g" "${target}"

    if [[ -n "${VAR_SIGNING_CA}" ]]; then

      sed -i -e "s|@EXP_CA_FPR@|${VAR_SIGNING_CA_FPR}|g" "${target}"

    else

      sed -i -e '/@EXP_CA_FPR@/d' "${target}"

    fi

  done

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

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