liminix/modules/firewall/service.nix

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{
liminix
, lib
, firewallgen
, nftables
}:
let
inherit (liminix.services) oneshot;
inherit (liminix.lib) typeChecked;
inherit (lib) mkOption types;
t = {
ruleset = mkOption {
type = types.anything; # we could usefully define this more tightly
description = "firewall ruleset";
};
};
in
params:
let
inherit (typeChecked "firewall" t params) ruleset;
script = firewallgen "firewall.nft" ruleset;
in oneshot {
name = "firewall";
up = script;
down = "${nftables}/bin/nft flush ruleset";
}