#!/bin/sh
# 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

set -e

PREREQ=""
prereqs() { echo "$PREREQ"; }
case $1 in
  prereqs) prereqs; exit 0 ;;
esac

. /usr/share/initramfs-tools/hook-functions

mkdir -p "${DESTDIR}/bin" "${DESTDIR}/usr/bin" "${DESTDIR}/usr/local/bin" "${DESTDIR}/etc/dropbear/initramfs" "${DESTDIR}/etc/keys"

### Include Busybox
copy_exec /usr/bin/busybox /usr/bin
copy_exec /usr/bin/busybox /bin

### Include Bash
copy_exec /usr/bin/bash /usr/bin

### Include lsblk (block device info tool)
copy_exec /usr/bin/lsblk /usr/bin

### Include udevadm (udev management tool)
copy_exec /usr/bin/udevadm /usr/bin

### Include sha512sum e.g.
copy_exec /usr/bin/sha512sum /usr/bin
copy_exec /usr/bin/sha384sum /usr/bin

### Include Signature-Verifier
copy_exec /usr/bin/gpgv /usr/bin

for dir in bin usr/bin; do
  ln -sf busybox "${DESTDIR}/${dir}/cat"
  ln -sf busybox "${DESTDIR}/${dir}/sleep"
done

install -m 0555 /etc/initramfs-tools/files/coresecret.sh "${DESTDIR}/usr/local/bin/coresecret.sh"
install -m 0444 /etc/initramfs-tools/files/coresecret.sh.sha384 "${DESTDIR}/usr/local/bin/coresecret.sh.sha384"
install -m 0444 /etc/initramfs-tools/files/coresecret.sh.sha512 "${DESTDIR}/usr/local/bin/coresecret.sh.sha512"
install -m 0444 /etc/initramfs-tools/files/coresecret.sh.sha384.sig "${DESTDIR}/usr/local/bin/coresecret.sh.sha384.sig"
install -m 0444 /etc/initramfs-tools/files/coresecret.sh.sha512.sig "${DESTDIR}/usr/local/bin/coresecret.sh.sha512.sig"

cp -a /root/.ciss/keys/pubring.gpg "${DESTDIR}/etc/keys/"
chmod 0444 "${DESTDIR}/etc/keys/pubring.gpg"

cp -a /etc/dropbear/initramfs/banner "${DESTDIR}/etc/dropbear/initramfs/banner"