Marc S. Weidner
7d599e8463
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Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
107 lines
3.8 KiB
Bash
107 lines
3.8 KiB
Bash
#!/bin/bash
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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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guard_sourcing
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#######################################
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# Installs the desired security extension framework.
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# Globals:
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# TARGET
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# VAR_SEC_FW
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# VAR_SSH_PORT
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# Arguments:
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# None
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# Returns:
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# 0: on success
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#######################################
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installation_security() {
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### Declare Arrays, HashMaps, and Variables.
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declare -r var_logfile="/root/.ciss/cdi/log/4610_installation_security.log"
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declare -ar ary_apparmor=( "apparmor" "apparmor-profiles" "apparmor-profiles-extra" "apparmor-utils" )
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declare -ar ary_selinux=( "selinux-basics" "selinux-policy-default" "selinux-utils" "setools" "semodule-utils" "sepol-utils" \
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"policycoreutils" "policycoreutils-python-utils" "checkpolicy" "python3-setools" )
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declare -a ary_fw=("${ary_selinux[@]}")
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chroot_logger "${TARGET}${var_logfile}"
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[[ "${VAR_SEC_FW}" == "apparmor" ]] && ary_fw=("${ary_apparmor[@]}")
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[[ "${VAR_SEC_FW}" == "selinux" ]] && ary_fw=("${ary_selinux[@]}")
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chroot_script "${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 ${ary_fw[*]} 2>&1 | tee -a ${var_logfile}
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if [[ ${VAR_SEC_FW} == apparmor ]]; then
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systemctl enable apparmor 2>&1 | tee -a ${var_logfile} || true
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fi
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"
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if [[ "${VAR_SEC_FW}" == "selinux" ]]; then
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mkdir -p "${TARGET}/etc/selinux" "${TARGET}/root/.ciss/cdi/backup/etc/selinux"
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[[ -f "${TARGET}/etc/selinux/config" ]] && mv "${TARGET}/etc/selinux/config" "${TARGET}/root/.ciss/cdi/backup/etc/selinux"
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insert_header "${TARGET}/etc/selinux/config"
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insert_comments "${TARGET}/etc/selinux/config"
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cat << 'EOF' >> "${TARGET}/etc/selinux/config"
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# This file controls the state of SELinux on the system.
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# SELINUX= can take one of these three values:
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# enforcing : SELinux security policy is enforced.
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# permissive: SELinux prints warnings instead of enforcing.
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# disabled : SELinux policy is not loaded.
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SELINUX=permissive
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# SELINUXTYPE= can take one of these two values:
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# default: equivalent to the old strict and targeted policies.
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# mls : Multi-Level Security (for military and educational use).
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# src : Custom policy built from source.
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SELINUXTYPE=default
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# SETLOCALDEFS= Check local definition changes
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SETLOCALDEFS=0
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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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### Trigger a full relabeling on the first boot of the target.
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touch "${TARGET}/.autorelabel"
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chroot_script "${TARGET}" "
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semanage port -a -t ssh_port_t -p tcp ${VAR_SSH_PORT}
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"
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### Enable PAM SELinux modules in common-session configs.
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sed -i '/^session.*required.*pam_selinux\.so/d' "${TARGET}/etc/pam.d/common-session"
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sed -i '/^session.*required.*pam_selinux\.so/d' "${TARGET}/etc/pam.d/common-session-noninteractive"
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cat << 'EOF' >> "${TARGET}/etc/pam.d/common-session"
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session required pam_selinux.so close
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session required pam_selinux.so open
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EOF
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cat << 'EOF' >> "${TARGET}/etc/pam.d/common-session-noninteractive"
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session required pam_selinux.so close
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session required pam_selinux.so open
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EOF
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fi
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guard_dir && return 0
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}
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### Prevents accidental 'unset -f'.
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# shellcheck disable=SC2034
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readonly -f installation_security
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# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
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