#!/bin/bash
# SPDX-Version: 3.0
# SPDX-CreationInfo: 2025-05-05; 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

#######################################
# CISS.debian.installer 'GRUB' and 'Autostart' generator.
# Globals:
#   BASH_SOURCE
#   VAR_HANDLER_BUILD_DIR
#   VAR_HANDLER_CDI
#   VAR_KERNEL
#   VAR_WORKDIR
# Arguments:
#   None
# Returns:
#   0: on success
#######################################
cdi() {
  printf "\e[95m++++ ++++ ++++ ++++ ++++ ++++ ++ 🧪 %s starting ... \e[0m\n" "${BASH_SOURCE[0]}"

  if [[ "${VAR_HANDLER_CDI}" == "true" ]]; then

    if [[ ! -d "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/usr/lib/live/config" ]]; then

      mkdir -p "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/usr/lib/live/config"

    fi

    cp "${VAR_WORKDIR}/scripts/9999-cdi-starter" "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/usr/lib/live/config/9999-cdi-starter"
    chmod 0755 "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/usr/lib/live/config/9999-cdi-starter"
    chown root:root "${VAR_HANDLER_BUILD_DIR}/config/includes.chroot/usr/lib/live/config/9999-cdi-starter"

    declare tmp_entry
    tmp_entry="$(mktemp)"
    cat << EOF >| "${tmp_entry}"
menuentry "CISS Hardened DI (${VAR_KERNEL})" --hotkey=i {
        linux /live/vmlinuz-${VAR_KERNEL} boot=live verify-checksums components splash nopersistence toram ramdisk-size=1024M swap=true noautologin nottyautologin nox11autologin noeject locales=en_US.UTF-8 keyboard-layouts=de keyboard-model=pc105 keyboard-options= keyboard-variants= timezone=Etc/UTC apparmor=1 security=apparmor audit_backlog_limit=8192 audit=1 debugfs=off efi=disable_early_pci_dma hardened_usercopy=1 ia32_emulation=0 init_on_alloc=1 init_on_free=1 iommu.passthrough=0 iommu.strict=1 iommu=force kfence.sample_interval=100 kvm.nx_huge_pages=force l1d_flush=on lockdown=confidentiality loglevel=0 mitigations=auto,nosmt mmio_stale_data=full,force nosmt=force oops=panic page_alloc.shuffle=1 page_poison=1 panic=0 pti=on random.trust_bootloader=off random.trust_cpu=off randomize_kstack_offset=on retbleed=auto,nosmt rodata=on slab_nomerge vdso32=0 vsyscall=none findiso=\${iso_path}
        initrd /live/initrd.img-${VAR_KERNEL}
}
EOF
    sed -i "/#MUST_BE_REPLACED/{
  r ${tmp_entry}
  d
}" "${VAR_HANDLER_BUILD_DIR}/config/bootloaders/grub-efi/grub.cfg"

    sed -i "/#MUST_BE_REPLACED/{
  r ${tmp_entry}
  d
}" "${VAR_HANDLER_BUILD_DIR}/config/bootloaders/grub-pc/grub.cfg"

    rm -f "${tmp_entry}"
  else
    # shellcheck disable=SC1003
    sed -i '/#MUST_BE_REPLACED/c\\' "${VAR_HANDLER_BUILD_DIR}/config/bootloaders/grub-efi/grub.cfg"
  fi

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

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