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{ config, lib, pkgs, ... }:
{
imports = [ ./dyndns.nix ];
# https://github.com/NixOS/nixpkgs/issues/210807#issuecomment-1383263210
options.services.nginx.virtualHosts = lib.mkOption {
type = lib.types.attrsOf (lib.types.submodule {
config.acmeRoot = lib.mkDefault null;
});
};
config = {
security.acme.acceptTerms = true;
security.acme.defaults.email = "hostmaster@mou.fo";
# https://go-acme.github.io/lego/dns/exec/
security.acme.defaults.dnsProvider = "exec";
security.acme.defaults.credentialFiles = {
"DDNS_FILE" = "/var/secrets/dyndns/";
};
security.acme.defaults.environmentFile = pkgs.writeText "lego.env" ''
# While it can be helpful to follow CNAMEs to find the challenge domain,
# this heuristic may not work with wildcard domains or DNAME.
LEGO_DISABLE_CNAME_SUPPORT=1
EXEC_PATH=${pkgs.writers.writeBash "lego-exec" ''
set -e
fqdn=${config.networking.fqdn}
challenge_fqdn=$2''${fqdn%%.*}.dynamic.''${fqdn#*.}
unset update_rr
if [[ $1 = present ]]; then
update_rr="update add $challenge_fqdn. 300 TXT $3"
fi
${pkgs.dnsutils}/bin/nsupdate -v -k ''${DDNS_FILE}_$(< ''${DDNS_FILE}_basename).private <<.
update delete $challenge_fqdn. TXT
$update_rr
send
.
if [[ $1 = present ]]; then
sleep 5
fi
''}
'';
};
}
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