Marc S. Weidner
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Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
96 lines
2.9 KiB
Bash
96 lines
2.9 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 || return "${ERR_GUARD_SOURCE}"
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#######################################
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# Configure the '/etc/resolv.conf' file.
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# Globals:
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# ARY_IPV4_NS
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# ARY_IPV6_NS
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# RECOVERY
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# TARGET
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# VAR_FINAL_IPV6
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# VAR_LINK_IPV6
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# VAR_RUN_RECOVERY
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# Arguments:
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# None
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# Returns:
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# 0: on success
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#######################################
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setup_resolv() {
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### Declare Arrays, HashMaps, and Variables.
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declare ns=""
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declare var_target="${TARGET}"
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### Check for TARGET / RECOVERY.
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[[ "${VAR_RUN_RECOVERY}" == "true" ]] && var_target="${RECOVERY}"
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if [[ -f "${var_target}/etc/resolv.conf" ]]; then
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mkdir -p "${var_target}/root/.ciss/cdi/backup/etc"
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mv "${var_target}/etc/resolv.conf" "${var_target}/root/.ciss/cdi/backup/etc/resolv.conf.bak"
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do_log "info" "file_only" "4035() Existing '${var_target}/etc/resolv.conf' moved."
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fi
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touch "${var_target}/etc/resolv.conf"
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chmod 0644 "${var_target}/etc/resolv.conf"
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### Create '/etc/resolv.conf' IPv4 entries for static configuration.
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insert_header "${var_target}/etc/resolv.conf"
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insert_comments "${var_target}/etc/resolv.conf"
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cat << EOF >> "${var_target}/etc/resolv.conf"
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### Custom DNS IPv4 configuration
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EOF
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for ns in "${ARY_IPV4_NS[@]}"; do
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echo "nameserver ${ns}" >> "${var_target}/etc/resolv.conf"
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do_log "info" "file_only" "4035() IPv4 nameserver added: [${ns}]."
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done
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echo "" >> "${var_target}/etc/resolv.conf"
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do_log "info" "file_only" "4035() IPv4 nameserver at: '${var_target}/etc/resolv.conf' configured."
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### Create '/etc/resolv.conf' IPv6 entries for static configuration.
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if [[ "${VAR_LINK_IPV6,,}" == "true" || -n "${VAR_FINAL_IPV6}" ]]; then
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cat << EOF >> "${var_target}/etc/resolv.conf"
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### Custom DNS IPv6 configuration
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EOF
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for ns in "${ARY_IPV6_NS[@]}"; do
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echo "nameserver ${ns}" >> "${var_target}/etc/resolv.conf"
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do_log "info" "file_only" "4035() IPv6 nameserver added: [${ns}]."
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done
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echo "" >> "${var_target}/etc/resolv.conf"
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do_log "info" "file_only" "4035() IPv6 nameserver at: '${var_target}/etc/resolv.conf' configured."
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fi
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cat << EOF >> "${var_target}/etc/resolv.conf"
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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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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 setup_resolv
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# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
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