#!/bin/bash
# SPDX-Version: 3.0
# SPDX-CreationInfo: 2025-06-17; WEIDNER, Marc S.; <msw@coresecret.dev>
# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.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.installer
# SPDX-Security-Contact: security@coresecret.eu

guard_sourcing

#######################################
# Check if the target system is not 'tainted: unmerged-usr'.
# Globals:
#   RECOVERY
#   TARGET
#   VAR_RUN_RECOVERY
#   architecture
# Arguments:
#   None
# Returns:
#   0: on success
#######################################
check_usr_merge() {
  ### Declare Arrays, HashMaps, and Variables.
  declare -r  var_logfile="/root/.ciss/cdi/log/4015_check_usr_merge.log"
  declare     var_target="${TARGET}"

  ### Check for TARGET / RECOVERY.
  [[ "${VAR_RUN_RECOVERY}" == "true" ]] && var_target="${RECOVERY}"

  chroot_logger "${var_target}${var_logfile}"

  # shellcheck disable=SC2312
  chroot_script "${var_target}" "
    test -L /bin  && test $(readlink -f /bin)  = '/usr/bin'  && echo 'MERGED:/bin'  >> ${var_logfile} || echo 'UNMERGED:/bin'  >> ${var_logfile}
    test -L /sbin && test $(readlink -f /sbin) = '/usr/sbin' && echo 'MERGED:/sbin' >> ${var_logfile} || echo 'UNMERGED:/sbin' >> ${var_logfile}
    test -L /lib  && test $(readlink -f /lib)  = '/usr/lib'  && echo 'MERGED:/lib'  >> ${var_logfile} || echo 'UNMERGED:/lib'  >> ${var_logfile}
    echo ExitCode of PIPESTATUS[0]: [\${PIPESTATUS[0]}] >> ${var_logfile}
  "

  if [[ "${architecture}" == "amd64" ]]; then
    # shellcheck disable=SC2312
    chroot_script "${var_target}" "
      test -L /lib64 && test $(readlink -f /lib64) = '/usr/lib64' && echo 'MERGED:/lib64' >> ${var_logfile} || echo 'UNMERGED:/lib64' >> ${var_logfile}
      echo ExitCode of PIPESTATUS[0]: [\${PIPESTATUS[0]}] >> ${var_logfile}
    "
  fi

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