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CISS.debian.installer/func/cdi_1250_yaml/1252_yaml_validator.sh
Marc S. Weidner 0b5f9a151a
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V8.00.000.2025.06.17 
Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
2025-08-07 21:50:03 +02:00

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#!/bin/bash
# SPDX-Version: 3.0
# SPDX-CreationInfo: 2025-06-17; WEIDNER, Marc S.; <msw@coresecret.dev>
# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.git
# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
# SPDX-FileType: SOURCE
# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
# SPDX-PackageName: CISS.debian.installer
# SPDX-Security-Contact: security@coresecret.eu
guard_sourcing
#######################################
# Extended dynamic network variable checks and declarations depending on preseed.yaml.
# Globals:
# ARY_IPV4_NS
# ARY_IPV6_NS
# VAR_FINAL_FQDN
# VAR_FINAL_IPV4
# VAR_FINAL_IPV4_GW
# VAR_FINAL_IPV4_SUBNET
# VAR_FINAL_IPV6
# VAR_FINAL_NIC
# VAR_LINK_IPV6
# network_autoconfig_enable
# network_choose_interface_static
# network_hostname
# network_static_ipv4address
# network_static_ipv4gateway
# network_static_ipv4nameserver_0
# network_static_ipv4nameserver_1
# network_static_ipv4nameserver_2
# network_static_ipv4nameserver_3
# network_static_ipv4nameserver_fallback_0
# network_static_ipv4nameserver_fallback_1
# network_static_ipv4netmask
# network_static_ipv6address
# network_static_ipv6nameserver_0
# network_static_ipv6nameserver_1
# network_static_ipv6nameserver_2
# network_static_ipv6nameserver_3
# network_static_ipv6nameserver_fallback_0
# network_static_ipv6nameserver_fallback_1
# Arguments:
# None
# Returns:
# 0: on success
#######################################
yaml_validator() {
### Declare Arrays, HashMaps, and Variables.
# shellcheck disable=SC2034
declare -ag ARY_IPV4_NS=() ARY_IPV6_NS=()
declare var_auto_nic="" var_auto_ipv4="" var_auto_ipv4_ccidr="" var_auto_ipv4_subnet="" var_auto_ipv4_gw="" \
var_auto_ipv6="" var_auto_ipv6_ccidr="" var_auto_ipv6_gw="" var_link_ipv4="" var_link_ipv6="" var_auto_fqdn=""
declare -gx VAR_FINAL_NIC="" VAR_FINAL_FQDN="" VAR_FINAL_IPV4="" VAR_FINAL_IPV4_GW="" VAR_FINAL_IPV4_SUBNET="" \
VAR_FINAL_IPV6="" VAR_LINK_IPV6="" VAR_FINAL_IPV6_GW="" VAR_FINAL_IPV6_SUBNET=""
ensure_lowercase "network_autoconfig_enable"
ensure_lowercase "network_choose_interface_auto"
ensure_lowercase "network_choose_interface_static"
ensure_lowercase "network_hostname"
# shellcheck disable=SC2034
[[ -v network_static_ipv4nameserver_0 ]] && ARY_IPV4_NS+=( "${network_static_ipv4nameserver_0}" )
# shellcheck disable=SC2034
[[ -v network_static_ipv4nameserver_1 ]] && ARY_IPV4_NS+=( "${network_static_ipv4nameserver_1}" )
# shellcheck disable=SC2034
[[ -v network_static_ipv4nameserver_2 ]] && ARY_IPV4_NS+=( "${network_static_ipv4nameserver_2}" )
# shellcheck disable=SC2034
[[ -v network_static_ipv4nameserver_3 ]] && ARY_IPV4_NS+=( "${network_static_ipv4nameserver_3}" )
# shellcheck disable=SC2034
[[ -v network_static_ipv4nameserver_fallback_0 ]] && ARY_IPV4_NS+=( "${network_static_ipv4nameserver_fallback_0}" )
# shellcheck disable=SC2034
[[ -v network_static_ipv4nameserver_fallback_1 ]] && ARY_IPV4_NS+=( "${network_static_ipv4nameserver_fallback_1}" )
# shellcheck disable=SC2034
[[ -v network_static_ipv6nameserver_0 ]] && ARY_IPV6_NS+=( "${network_static_ipv6nameserver_0}" )
# shellcheck disable=SC2034
[[ -v network_static_ipv6nameserver_1 ]] && ARY_IPV6_NS+=( "${network_static_ipv6nameserver_1}" )
# shellcheck disable=SC2034
[[ -v network_static_ipv6nameserver_2 ]] && ARY_IPV6_NS+=( "${network_static_ipv6nameserver_2}" )
# shellcheck disable=SC2034
[[ -v network_static_ipv6nameserver_3 ]] && ARY_IPV6_NS+=( "${network_static_ipv6nameserver_3}" )
# shellcheck disable=SC2034
[[ -v network_static_ipv6nameserver_fallback_0 ]] && ARY_IPV6_NS+=( "${network_static_ipv6nameserver_fallback_0}" )
# shellcheck disable=SC2034
[[ -v network_static_ipv6nameserver_fallback_1 ]] && ARY_IPV6_NS+=( "${network_static_ipv6nameserver_fallback_1}" )
### Check current network connection and configure variables
# shellcheck disable=SC2312
var_auto_nic=$(ip -o link show | awk -F': ' '/state UP/ && $2!="lo" {print $2; exit}')
# shellcheck disable=SC2312
var_auto_ipv4_ccidr=$(ip -4 -o addr show "${var_auto_nic}" | awk '{print $4; exit}')
# shellcheck disable=SC2312
var_auto_ipv4_subnet=$(generate_subnetmask "${var_auto_ipv4_ccidr}")
# shellcheck disable=SC2312
var_auto_ipv4=$(echo "${var_auto_ipv4_ccidr}" | awk -F'/' '{print $1}')
# shellcheck disable=SC2312
var_auto_ipv4_gw=$(ip route show default dev "${var_auto_nic}" | awk '/^default/ {print $3; exit}')
# shellcheck disable=SC2312
var_auto_ipv6_ccidr=$(ip -6 -o addr show "${var_auto_nic}" | awk '/scope global/ {print $4; exit}')
if [[ -n "${var_auto_ipv6_ccidr}" ]]; then
# shellcheck disable=SC2312
var_auto_ipv6=$(echo "${var_auto_ipv6_ccidr}" | awk -F'/' '{print $1}')
# shellcheck disable=SC2312
var_auto_ipv6_gw=$(ip -6 route show default dev "${var_auto_nic}" | awk '/^default/ {print $3; exit}')
fi
# shellcheck disable=SC2312
var_link_ipv4=$(ping -q -c 1 -W 1 -4 debian.org > /dev/null 2>&1 && echo "true" || echo "false")
# shellcheck disable=SC2312
var_link_ipv6=$(ping -q -c 1 -W 1 -6 debian.org > /dev/null 2>&1 && echo "true" || echo "false")
if [[ -f "/var/lib/dhcp/dhclient.${var_auto_nic}.leases" ]]; then
# shellcheck disable=SC2312
var_auto_fqdn=$(grep -m1 'option host-name' "/var/lib/dhcp/dhclient.${var_auto_nic}.leases" | sed -E 's/.*"([^"]+)".*/\1/')
else
var_auto_fqdn=""
fi
do_log "info" "file_only" "1252() Live environment network check: Auto NIC ='${var_auto_nic}'."
do_log "info" "file_only" "1252() Live environment network check: Auto IPv4 ='${var_auto_ipv4}'."
do_log "info" "file_only" "1252() Live environment network check: Auto IPv4 CCIDR ='${var_auto_ipv4_ccidr}'."
do_log "info" "file_only" "1252() Live environment network check: Auto IPv4 Subnet ='${var_auto_ipv4_subnet}'."
do_log "info" "file_only" "1252() Live environment network check: Auto IPv4 Gateway ='${var_auto_ipv4_gw}'."
do_log "info" "file_only" "1252() Live environment network check: Auto IPv6 ='${var_auto_ipv6}'."
do_log "info" "file_only" "1252() Live environment network check: Auto IPv6 CCIDR ='${var_auto_ipv6_ccidr}'."
do_log "info" "file_only" "1252() Live environment network check: Auto IPv6 Gateway ='${var_auto_ipv6_gw}'."
do_log "info" "file_only" "1252() Live environment network check: Auto IPv4 Link ='${var_link_ipv4}'."
do_log "info" "file_only" "1252() Live environment network check: Auto IPv6 Link ='${var_link_ipv6}'."
do_log "info" "file_only" "1252() Live environment network check: Auto FQDN ='${var_auto_fqdn}'."
### Export hostname and IPv4 and IPv6 addresses for further processing according to dynamic results and preseed.yaml settings.
if [[ "${network_autoconfig_enable}" == "true" ]]; then
# shellcheck disable=SC2034
VAR_FINAL_NIC="${var_auto_nic}"
# shellcheck disable=SC2034
VAR_FINAL_FQDN="${var_auto_fqdn}"
# shellcheck disable=SC2034
VAR_FINAL_IPV4="${var_auto_ipv4}"
# shellcheck disable=SC2034
VAR_FINAL_IPV4_GW="${var_auto_ipv4_gw}"
# shellcheck disable=SC2034
VAR_FINAL_IPV4_SUBNET="${var_auto_ipv4_subnet}"
do_log "info" "file_only" "1252() Network IPv4 autoconfiguration: [${network_autoconfig_enable}]."
else
# shellcheck disable=SC2034
VAR_FINAL_NIC="${network_choose_interface_static}"
# shellcheck disable=SC2034
VAR_FINAL_FQDN="${network_hostname}"
# shellcheck disable=SC2034
VAR_FINAL_IPV4="${network_static_ipv4address}"
# shellcheck disable=SC2034
VAR_FINAL_IPV4_GW="${network_static_ipv4gateway}"
# shellcheck disable=SC2034
VAR_FINAL_IPV4_SUBNET="${network_static_ipv4netmask}"
do_log "info" "file_only" "1252() Network IPv4 autoconfiguration: [${network_autoconfig_enable}]."
fi
if [[ "${network_autoconfig_enable}" == "true" && "${var_link_ipv6}" == "true" ]]; then
# shellcheck disable=SC2034
VAR_FINAL_IPV6="${var_auto_ipv6}"
# shellcheck disable=SC2034
VAR_LINK_IPV6="${var_link_ipv6}"
# shellcheck disable=SC2034
VAR_FINAL_IPV6_GW="${var_auto_ipv6_gw}"
# shellcheck disable=SC2034
VAR_FINAL_IPV6_SUBNET="${var_auto_ipv6_ccidr}"
do_log "info" "file_only" "1252() Network IPv6 autoconfiguration: [${network_autoconfig_enable}] and IPv6 Link: [${var_link_ipv6}]."
elif [[ "${network_autoconfig_enable}" == "false" && -n "${network_static_ipv6address}" ]]; then
# shellcheck disable=SC2034
VAR_LINK_IPV6="${var_link_ipv6}"
# shellcheck disable=SC2034
VAR_FINAL_IPV6="${network_static_ipv6address}"
# shellcheck disable=SC2034
VAR_FINAL_IPV6_GW="${network_static_ipv6gateway}"
# shellcheck disable=SC2034
VAR_FINAL_IPV6_SUBNET="${network_static_ipv6netmask}"
do_log "info" "file_only" "1252() Network IPv6 autoconfiguration: [${network_autoconfig_enable}] and IPv6 static: [${network_static_ipv6address}]."
else
# shellcheck disable=SC2034
VAR_FINAL_IPV6=""
do_log "info" "file_only" "1252() Network IPv6 autoconfiguration: no IPv6 configuration applied."
fi
guard_dir && return 0
}
# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
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