101 lines
3.4 KiB
Bash
101 lines
3.4 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: LicenseRef-CNCL-1.1 OR LicenseRef-CCLA-1.1
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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" "${0}"
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[[ -r /root/ciss_xdg_tmp.sh ]] && . /root/ciss_xdg_tmp.sh
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export DEBIAN_FRONTEND="noninteractive"
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export INITRD="No"
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### Declare Arrays, HashMaps, and Variables.
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declare var_dropbear_env="/root/dropbear.env"
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[[ -r "${var_dropbear_env}" ]] || {
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printf "\e[91m++++ ++++ ++++ ++++ ++++ ++++ ++ ❌ ERROR: Missing Dropbear environment file: [%s] \e[0m\n" "${var_dropbear_env}" >&2
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exit 43
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}
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# shellcheck disable=SC1090
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. "${var_dropbear_env}"
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declare var_dropbear_version="${DROPBEAR_VERSION:?DROPBEAR_VERSION is not set}"
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[[ "${var_dropbear_version}" =~ ^[0-9]{4}\.[0-9]+$ ]] || {
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printf "\e[91m++++ ++++ ++++ ++++ ++++ ++++ ++ ❌ ERROR: Invalid Dropbear version: [%s] \e[0m\n" "${var_dropbear_version}" >&2
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exit 43
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}
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declare var_tar="/root/dropbear/dropbear-${var_dropbear_version}.tar.bz2"
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declare var_build_dir="/root/build/dropbear-${var_dropbear_version}"
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declare var_logfile="/root/.ciss/cdlb/log/0020_dropbear_build.log"
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mkdir -p "/root/build"
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[[ -r "${var_tar}" ]] || {
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printf "\e[91m++++ ++++ ++++ ++++ ++++ ++++ ++ ❌ ERROR: Missing Dropbear tarball: [%s] \e[0m\n" "${var_tar}" >&2
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exit 43
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}
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cp "${var_tar}" "/root/build"
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tar xjf "${var_tar}" -C "/root/build"
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cp "/root/dropbear/localoptions.h" "${var_build_dir}"
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cd "${var_build_dir}"
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### Flag Purpose:
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# -fPIE : Generate position-independent executable code
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# -pie : Link the executable as PIE (so that ASLR works)
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# -static : Fully statically linked against musl
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# -s : Strip unnecessary symbols directly during linking
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# -Wl,-z,relro,-z,now: Enables full RELRO (symbol resolution at program startup)
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# shellcheck disable=SC2016,SC2312
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if ! setsid bash -c '
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### Sterile environment for the build-process.
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export -n SHELLOPTS || true
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set +u
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unset PATH_SEPARATOR
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PATH_SEPARATOR=":"
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PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
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if ! command -v musl-gcc >/dev/null 2>&1; then
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echo "ERROR: musl-gcc not found. Install musl-tools in chroot." >&2
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exit 1
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fi
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CC=musl-gcc \
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CFLAGS="-Os -fPIE -Wno-undef -fstack-protector-strong -D_FORTIFY_SOURCE=2" \
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LDFLAGS="-static -pie -s -Wl,-z,relro,-z,now" \
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./configure \
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--enable-static \
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--enable-openpty \
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--disable-pam \
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--disable-zlib
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# shellcheck disable=2312
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make -j"$(nproc)"
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' >| "${var_logfile}" 2>&1
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then
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printf "\e[91m++++ ++++ ++++ ++++ ++++ ++++ ++ ❌ Dropbear build failed. See [%s] \e[0m\n" "${var_logfile}" >&2
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tail -n 42 "${var_logfile}" >&2 || true
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exit 42
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fi
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rm -rf /root/dropbear
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printf "\e[92m++++ ++++ ++++ ++++ ++++ ++++ ++ ✅ '%s' applied successfully. \e[0m\n" "${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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