#!/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

#######################################
# Final update '/etc/logrotate.d/*'.
# Globals:
#   RECOVERY
#   TARGET
#   VAR_RUN_RECOVERY
# Arguments:
#   None
# Returns:
#   0: on success
#######################################
final_logrotate() {
  ### Declare Arrays, HashMaps, and Variables.
  declare -ar ary_logrotate=(
    "alternatives"
    "apt"
    "btmp"
    "chrony"
    "clamav-daemon"
    "clamav-freshclam"
    "dpkg"
    "fail2ban"
    "rkhunter"
    "rsnapshot"
    "rsyslog"
    "ufw"
    "unattended-upgrades"
    "usbguard"
    "wtmp"
  )
  declare     var_file="" var_log=""
  declare     var_target="${TARGET}"

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

  for var_log in "${ary_logrotate[@]}"; do
    var_file="${var_target}/etc/logrotate.d/${var_log}"
    [[ -e "${var_file}" ]] || continue
    ### Replace leading 'monthly'/'weekly' directives with 'daily', preserving indentation and trailing comments.
    sed -E -i \
      -e 's/^([[:space:]]*)(monthly|weekly)([[:space:]]*)(#.*)?$/\1daily\3\4/' \
      -e 's/^([[:space:]]*)rotate([[:space:]]+[0-9]+)?([[:space:]]*)(#.*)?$/\1rotate 128\3\4/' \
      "${var_file}"
  done

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