Marc S. Weidner
2783c75043
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Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
125 lines
4.3 KiB
Bash
125 lines
4.3 KiB
Bash
#!/bin/bash
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# SPDX-Version: 3.0
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# SPDX-CreationInfo: 2025-10-11; WEIDNER, Marc S.; <msw@coresecret.dev>
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# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.live.builder.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.live.builder
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# SPDX-Security-Contact: security@coresecret.eu
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set -Ceuo pipefail
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printf "\e[95m++++ ++++ ++++ ++++ ++++ ++++ ++ 🧪 '%s' starting ... \e[0m\n" "${0}"
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[[ -r /root/ciss_xdg_tmp.sh ]] && . /root/ciss_xdg_tmp.sh
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export DEBIAN_FRONTEND="noninteractive" INITRD="No"
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### Declare Arrays, HashMaps, and Variables.
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declare var_file=""
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declare -r var_logfile="/root/.ciss/cdi/log/4311_dropbear_initramfs.log"
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declare var_target="${TARGET}"
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### Check for TARGET / RECOVERY.
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[[ "${VAR_RUN_RECOVERY}" == "true" ]] && var_target="${RECOVERY}"
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chroot_logger "${var_target}${var_logfile}"
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chroot_script "${var_target}" "
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export INITRD=No
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[[ -r /root/ciss_xdg_tmp.sh ]] && . /root/ciss_xdg_tmp.sh
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apt-get install -y --no-install-recommends --no-install-suggests dropbear-initramfs dropbear-bin 2>&1 | tee -a ${var_logfile}
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"
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chroot_script "${var_target}" "
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export INITRD=No
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[[ -r /root/ciss_xdg_tmp.sh ]] && . /root/ciss_xdg_tmp.sh
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apt-get purge -y dropbear dropbear-run || true
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"
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chroot_script "${var_target}" "
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export INITRD=No
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[[ -r /root/ciss_xdg_tmp.sh ]] && . /root/ciss_xdg_tmp.sh
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apt-get install -y --no-install-recommends --no-install-suggests gpgv 2>&1 | tee -a ${var_logfile}
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"
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chroot_script "${var_target}" "
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export INITRD=No
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[[ -r /root/ciss_xdg_tmp.sh ]] && . /root/ciss_xdg_tmp.sh
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apt-mark hold dropbear dropbear-initramfs 2>&1 | tee -a ${var_logfile}
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"
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mv "${var_target}/usr/sbin/dropbear" "${var_target}/usr/sbin/dropbear.trixie"
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install -D -m 0755 -o root -g root "${DIR_TMP}/build/dropbear-2025.88/dropbear" "${var_target}/usr/sbin/"
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do_log "debug" "file_only" "4311() Installation [dropbear] successful."
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for var_file in dbclient dropbearconvert dropbearkey; do
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mv "${var_target}/usr/bin/${var_file}" "${var_target}/usr/bin/${var_file}.trixie"
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install -D -m 0755 -o root -g root "${DIR_TMP}/build/dropbear-2025.88/${var_file}" "${var_target}/usr/bin/"
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do_log "debug" "file_only" "4311() Installation [${var_file}] successful."
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done
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mkdir -p "${var_target}/etc/initramfs-tools/scripts/init-bottom"
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cat << 'EOF' >| "${var_target}/etc/initramfs-tools/scripts/init-bottom/zzzz-dropbear-kill"
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#!/bin/sh
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PREREQ=""
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prereqs() { echo "${PREREQ}"; }
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# shellcheck disable=SC2249
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case "${1}" in
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prereqs) prereqs; exit 0 ;;
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esac
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### Stop dropbear shipped in the initramfs after root pivot.
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[ -x /bin/pidof ] || exit 0
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P=$(/bin/pidof dropbear 2>/dev/null) || true
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[ -n "${P}" ] || exit 0
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/bin/kill -TERM "${P}" 2>/dev/null || true
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/bin/sleep 1
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/bin/kill -KILL "${P}" 2>/dev/null || true
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exit 0
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# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
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EOF
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chmod 0755 "${var_target}/etc/initramfs-tools/scripts/init-bottom/zzzz-dropbear-kill"
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insert_header "${var_target}/etc/apt/preferences.d/99-mask-dropbear"
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insert_comments "${var_target}/etc/apt/preferences.d/99-mask-dropbear"
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cat << 'EOF' >> "${var_target}/etc/apt/preferences.d/99-mask-dropbear"
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# Never install the dropbear daemon package at all.
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Package: dropbear
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Pin: release *
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Pin-Priority: -1
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# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=conf
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EOF
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insert_header "${var_target}/etc/apt/preferences.d/99-mask-dropbear-initramfs"
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insert_comments "${var_target}/etc/apt/preferences.d/99-mask-dropbear-initramfs"
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cat << 'EOF' >> "${var_target}/etc/apt/preferences.d/99-mask-dropbear-initramfs"
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# Keep the currently installed initramfs integration; never upgrade it.
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Package: dropbear-initramfs
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Pin: release *
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Pin-Priority: -1
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# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=conf
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EOF
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chroot_script "${var_target}" "systemctl mask dropbear.service dropbear.socket"
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do_log "info" "file_only" "4311() Masked: [dropbear.service dropbear.socket]"
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printf "\e[92m++++ ++++ ++++ ++++ ++++ ++++ ++ ✅ '%s' applied successfully. \e[0m\n" "${0}"
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exit 0
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# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
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