Marc S. Weidner
c92cfaa9c6
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Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
142 lines
5.7 KiB
Bash
142 lines
5.7 KiB
Bash
#!/bin/sh
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# SPDX-Version: 3.0
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# SPDX-CreationInfo: 2025-06-17; WEIDNER, Marc S.; <msw@coresecret.dev>
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# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.git
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# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
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# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
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# SPDX-FileType: SOURCE
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# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
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# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
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# SPDX-PackageName: CISS.debian.installer
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# SPDX-Security-Contact: security@coresecret.eu
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# SPDX-Comment: Hook script (initramfs) for setting up the CISS.debian.installer hardened dropbear environment, incl. Luks Nuke.
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set -e
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printf "\e[95mStarting: [/etc/initramfs-tools/hooks/9999-custom-initramfs.sh] \n\e[0m"
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PREREQ=""
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prereqs() { echo "${PREREQ}"; }
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case "${1}" in
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prereqs) prereqs; exit 0 ;;
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esac
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. /usr/share/initramfs-tools/hook-functions
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# shellcheck disable=2292
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if [ ! -e /etc/initramfs-tools/files/unlock_wrapper.sh ]; then
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printf "\e[91mMissing unlock_wrapper.sh in: [/etc/initramfs-tools/files/] \n\e[0m"
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exit 1
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fi
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### Ensure directory structure in initramfs
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mkdir -p "${DESTDIR}/usr/bin"
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mkdir -p "${DESTDIR}/etc/keys"
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mkdir -p "${DESTDIR}/usr/local/bin"
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mkdir -p "${DESTDIR}/etc/initramfs-tools/conf.d"
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mkdir -p "${DESTDIR}/etc/initramfs-tools/scripts/init-premount"
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mkdir -p "${DESTDIR}/usr/sbin"
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### Include bash
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copy_exec /usr/bin/bash /usr/bin/bash
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printf "\e[92mSuccessfully executed: [copy_exec /usr/bin/bash /usr/bin/bash] \n\e[0m"
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### Include blkid
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copy_exec /usr/sbin/blkid /usr/sbin/blkid
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printf "\e[92mSuccessfully executed: [copy_exec /usr/sbin/blkid /usr/sbin/blkid] \n\e[0m"
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### Include busybox
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copy_exec /usr/bin/busybox /usr/busybox
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printf "\e[92mSuccessfully executed: [copy_exec /usr/bin/busybox /usr/busybox] \n\e[0m"
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### Include GNU coreutils 'sort' (has -V)
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copy_exec /usr/bin/sort /usr/bin/sort
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printf "\e[92mSuccessfully executed: [copy_exec /usr/bin/sort /usr/bin/sort] \n\e[0m"
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### Include gpgv
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copy_exec /usr/bin/gpgv /usr/bin/gpgv
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printf "\e[92mSuccessfully executed: [copy_exec /usr/bin/gpgv /usr/bin/gpgv] \n\e[0m"
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### Include lsblk
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copy_exec /usr/bin/lsblk /usr/bin/lsblk
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printf "\e[92mSuccessfully executed: [copy_exec /usr/bin/lsblk /usr/bin/lsblk] \n\e[0m"
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### Include mkpasswd
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copy_exec /usr/bin/mkpasswd /usr/mkpasswd
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printf "\e[92mSuccessfully executed: [copy_exec /usr/bin/mkpasswd /usr/mkpasswd] \n\e[0m"
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copy_exec /usr/bin/mkpasswd /usr/bin/mkpasswd
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printf "\e[92mSuccessfully executed: [copy_exec /usr/bin/mkpasswd /usr/bin/mkpasswd] \n\e[0m"
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### Include udevadm (udev management tool)
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copy_exec /usr/bin/udevadm /usr/bin/udevadm
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printf "\e[92mSuccessfully executed: [copy_exec /usr/bin/udevadm /usr/bin/udevadm] \n\e[0m"
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### Include sha384sum, sha512sum
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copy_exec /usr/bin/sha384sum /usr/bin/sha384sum
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printf "\e[92mSuccessfully executed: [copy_exec /usr/bin/sha384sum /usr/bin/sha384sum ] \n\e[0m"
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copy_exec /usr/bin/sha512sum /usr/bin/sha512sum
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printf "\e[92mSuccessfully executed: [copy_exec /usr/bin/sha512sum /usr/bin/sha512sum] \n\e[0m"
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### Include tree
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copy_exec /usr/bin/tree /usr/bin/tree
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printf "\e[92mSuccessfully executed: [copy_exec /usr/bin/tree /usr/bin/tree] \n\e[0m"
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### Include whois
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copy_exec /usr/bin/whois /usr/bin/whois
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printf "\e[92mSuccessfully executed: [copy_exec /usr/bin/whois /usr/bin/whois] \n\e[0m"
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### Link busybox applets for compatibility
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for dir in bin usr/bin; do
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ln -sf busybox "${DESTDIR}/${dir}/cat"
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ln -sf busybox "${DESTDIR}/${dir}/sleep"
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done
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### Install Dropbear firewall configuration
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install -m 0444 /etc/initramfs-tools/files/dropbear_fw.conf "${DESTDIR}/etc/initramfs-tools/conf.d/dropbear_fw.conf"
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printf "\e[92mSuccessfully executed: [install -m 0444 /etc/initramfs-tools/files/dropbear_fw.conf %s/etc/initramfs-tools/conf.d/dropbear_fw.conf] \n\e[0m" "${DESTDIR}"
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### Install Dropbear configuration
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install -m 0444 /etc/dropbear/initramfs/dropbear.conf "${DESTDIR}/etc/dropbear/dropbear.conf"
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printf "\e[92mSuccessfully executed: [install -m 0444 /etc/dropbear/initramfs/dropbear.conf %s/etc/dropbear/dropbear.conf] \n\e[0m" "${DESTDIR}"
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### Install Dropbear 'cryptroot-unlock'-Wrapper
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install -m 0555 /etc/initramfs-tools/files/unlock_wrapper.sh "${DESTDIR}/usr/local/bin/unlock_wrapper.sh"
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printf "\e[92mSuccessfully executed: [install -m 0555 /etc/initramfs-tools/files/unlock_wrapper.sh %s/usr/local/bin/unlock_wrapper.sh] \n\e[0m" "${DESTDIR}"
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install -m 0444 /etc/initramfs-tools/files/unlock_wrapper.sh.sha512 "${DESTDIR}/usr/local/bin/unlock_wrapper.sh.sha512"
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printf "\e[92mSuccessfully executed: [install -m 0444 /etc/initramfs-tools/files/unlock_wrapper.sh.sha512 %s/usr/local/bin/unlock_wrapper.sh.sha512] \n\e[0m" "${DESTDIR}"
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install -m 0444 /etc/initramfs-tools/files/unlock_wrapper.sh.sha512.sig "${DESTDIR}/usr/local/bin/unlock_wrapper.sh.sha512.sig"
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printf "\e[92mSuccessfully executed: [install -m 0444 /etc/initramfs-tools/files/unlock_wrapper.sh.sha512.sig %s/usr/local/bin/unlock_wrapper.sh.sha512.sig] \n\e[0m" "${DESTDIR}"
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### Install PGP Signing Keys
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install -m 0444 /root/.ciss/cdi/keys/unlock_wrapper_pubring.gpg "${DESTDIR}/etc/keys/unlock_wrapper_pubring.gpg"
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printf "\e[92mSuccessfully executed: [install -m 0444 /root/.ciss/cdi/keys/unlock_wrapper_pubring.gpg %s/etc/keys/unlock_wrapper_pubring.gpg] \n\e[0m" "${DESTDIR}"
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### Install Dropbear Banner
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install -m 0444 /etc/dropbear/initramfs/banner "${DESTDIR}/etc/dropbear/banner"
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printf "\e[92mSuccessfully executed: [install -m 0444 /etc/dropbear/initramfs/banner %s/etc/dropbear/banner] \n\e[0m" "${DESTDIR}"
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printf "\e[92mSuccessfully executed: [/etc/initramfs-tools/hooks/9999-custom-initramfs.sh] \n\e[0m"
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# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
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