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slawek 7cb2f1b8dd Defer configuration by default and manage vpn-router.conf with ucf
Add platform = none as the shipped default so installing the package
changes nothing on the machine until a platform is chosen. Add a mode
setting (manual/interfaces/auto) controlling how much of the network
configuration is supplied versus detected from the system. Manage
/etc/vpn-router/vpn-router.conf with ucf instead of writing it once,
so dpkg-reconfigure can safely reapply debconf answers without
clobbering local edits. Extend NAT/forward rules to all local subnets,
not just the first.
2026-08-23 17:15:49 +02:00

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#!/bin/sh
set -e
. /usr/share/debconf/confmodule
case "$1" in
configure)
# --- Read the installer's answers ---
db_get vpn-router/platform; VPN_ROUTER_PLATFORM="$RET"
db_get vpn-router/mode; VPN_ROUTER_MODE="$RET"
db_get vpn-router/int_addr; VPN_ROUTER_INT_ADDR="$RET"
db_get vpn-router/external_interface; VPN_ROUTER_EXTERNAL_INTERFACE="$RET"
db_get vpn-router/internal_interface; VPN_ROUTER_INTERNAL_INTERFACE="$RET"
db_get vpn-router/local_fqdn; VPN_ROUTER_LOCAL_FQDN="$RET"
db_get vpn-router/local_id_mode; VPN_ROUTER_LOCAL_ID_MODE="$RET"
db_get vpn-router/local_cidrs; VPN_ROUTER_LOCAL_CIDRS="$RET"
db_get vpn-router/int_gateway_ip; VPN_ROUTER_INT_GATEWAY_IP="$RET"
db_get vpn-router/remote_addrs; VPN_ROUTER_REMOTE_ADDRS="$RET"
db_get vpn-router/remote_id; VPN_ROUTER_REMOTE_ID="$RET"
db_get vpn-router/remote_cidrs; VPN_ROUTER_REMOTE_CIDRS="$RET"
db_get vpn-router/psk; VPN_ROUTER_PSK="$RET"
db_get vpn-router/p2s_enabled; VPN_ROUTER_P2S_ENABLED="$RET"
db_get vpn-router/p2s_address_pool; VPN_ROUTER_P2S_ADDRESS_POOL="$RET"
db_get vpn-router/p2s_ca_name; VPN_ROUTER_P2S_CA_NAME="$RET"
db_get vpn-router/wg_enabled; VPN_ROUTER_WG_ENABLED="$RET"
db_get vpn-router/wg_address; VPN_ROUTER_WG_ADDRESS="$RET"
db_get vpn-router/wg_listen_port; VPN_ROUTER_WG_LISTEN_PORT="$RET"
export VPN_ROUTER_PLATFORM VPN_ROUTER_MODE VPN_ROUTER_INT_ADDR \
VPN_ROUTER_EXTERNAL_INTERFACE \
VPN_ROUTER_INTERNAL_INTERFACE VPN_ROUTER_LOCAL_FQDN \
VPN_ROUTER_LOCAL_ID_MODE VPN_ROUTER_LOCAL_CIDRS \
VPN_ROUTER_INT_GATEWAY_IP \
VPN_ROUTER_REMOTE_ADDRS VPN_ROUTER_REMOTE_ID \
VPN_ROUTER_REMOTE_CIDRS VPN_ROUTER_PSK \
VPN_ROUTER_P2S_ENABLED VPN_ROUTER_P2S_ADDRESS_POOL \
VPN_ROUTER_P2S_CA_NAME VPN_ROUTER_WG_ENABLED \
VPN_ROUTER_WG_ADDRESS VPN_ROUTER_WG_LISTEN_PORT
# --- Hand a candidate configuration to ucf ---
# ucf compares it against the file in /etc and decides what to do about
# local changes, prompting through debconf only for a real conflict.
# This is what makes dpkg-reconfigure apply without destroying edits.
CANDIDATE="$(mktemp)"
/usr/lib/vpn-router/generate-config "$CANDIDATE"
ucf --three-way --debconf-ok "$CANDIDATE" /etc/vpn-router/vpn-router.conf
ucfr vpn-router /etc/vpn-router/vpn-router.conf
chmod 0600 /etc/vpn-router/vpn-router.conf
rm -f "$CANDIDATE"
# The key now lives in the configuration file; do not keep a copy. An
# empty answer means "leave alone" next time, so clearing it here does
# not blank the key on the next dpkg-reconfigure.
db_set vpn-router/psk ""
# Apply the sysctl drop-in shipped by this package so it takes effect
# without waiting for a reboot.
sysctl --system >/dev/null
# The firewall is not touched here. Enabling it, allowing SSH and
# setting the forward policy all belong to vpn-router-setup, which does
# them only once the configuration says this host is a router.
;;
esac
#DEBHELPER#
db_stop