Files
housecarl/deploy/debian/postinst
T
abrown38andClaude Opus 5.5 34292eeebb Build Housecarl 0.1.0: the nftables firewall manager
Zones, address sets (IPv4 and IPv6 mixed, dynamic sets with timeouts) and
services, ordered rules in the early, input, forward and output chains,
port forwards with hairpin NAT and IPv6 pinholes, source NAT, redirects,
and switchable built-ins (loopback, conntrack, ICMPv6, antispoofing, MSS
clamping, DHCPv6 client, flowtable). Every change is validated, checked
with nft -c and applied in one transaction to Housecarl's own table,
inet housecarl; changes made over the network roll back unless
confirmed, and the confirmed ruleset is loaded at boot by
housecarl-ruleset.service. An empty configuration applies nothing.

Also: hit counters and the drop log (nflog), 'hc import' of an existing
nftables ruleset and 'hc takeover', the hc CLI, the REST API and the web
UI, users, scoped tokens (sets:write:NAME), the audit log, the web UI's
certificate through Jarl, Debian packages, docs, unit tests with real
nft 1.1.3, and an e2e test with real traffic (71 checks).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-19 07:57:14 +01:00

64 lines
2.7 KiB
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#!/bin/sh
# Housecarl: runs after the package's files are in place.
set -e
if [ "$1" = configure ]; then
# The housecarl system user and Housecarl's directories: /etc/housecarl,
# /var/lib/housecarl and /var/backups/housecarl.
systemd-sysusers housecarl.conf
systemd-tmpfiles --create housecarl.conf || true
# An example configuration on the first install; an existing one is
# never touched.
if [ ! -e /etc/housecarl/housecarl.yaml ]; then
/usr/bin/housecarld config --example > /etc/housecarl/housecarl.yaml.dpkg-new
chown root:housecarl /etc/housecarl/housecarl.yaml.dpkg-new
chmod 0640 /etc/housecarl/housecarl.yaml.dpkg-new
mv /etc/housecarl/housecarl.yaml.dpkg-new /etc/housecarl/housecarl.yaml
fi
# The daily database backup (housecarl-backup.timer) is on by default. An
# administrator's 'systemctl disable housecarl-backup.timer' is remembered
# by deb-systemd-helper and kept across upgrades. Before 'housecarld init'
# the backup skips itself (there is no database yet).
if command -v deb-systemd-helper >/dev/null 2>&1; then
deb-systemd-helper unmask housecarl-backup.timer >/dev/null || true
if deb-systemd-helper --quiet was-enabled housecarl-backup.timer; then
deb-systemd-helper enable housecarl-backup.timer >/dev/null || true
else
deb-systemd-helper update-state housecarl-backup.timer >/dev/null || true
fi
elif [ -z "$2" ] && [ -d /run/systemd/system ]; then
systemctl enable housecarl-backup.timer >/dev/null 2>&1 || true
fi
# The boot unit loads the last confirmed ruleset before the network comes
# up; it does nothing until housecarld has saved one.
if [ -z "$2" ] && [ -d /run/systemd/system ]; then
systemctl enable housecarl-ruleset.service >/dev/null 2>&1 || true
fi
if [ -d /run/systemd/system ]; then
systemctl daemon-reload || true
if systemctl is-enabled --quiet housecarl-backup.timer 2>/dev/null; then
systemctl start housecarl-backup.timer || true
fi
# An upgrade restarts a running housecarld (its database is upgraded
# when it starts). A first install starts nothing: Housecarl needs
# 'housecarld init' first.
if [ -n "$2" ] && systemctl is-active --quiet housecarl.service; then
systemctl restart housecarl.service || echo "housecarl: restarting housecarld failed; see 'journalctl -u housecarl'" >&2
fi
fi
if [ -z "$2" ]; then
echo "Housecarl is installed. Next: create the database and start it, as described"
echo "in /usr/share/doc/housecarl/docs/install.md:"
echo " sudo -u housecarl housecarld init && sudo systemctl enable --now housecarl"
echo "To bring your current nftables ruleset over: sudo hc import --defines /etc/nftables.conf -n"
echo "(docs/import.md). Housecarl only writes its own table, inet housecarl."
fi
fi
exit 0