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|
{ config, lib, pkgs, ... }:
let
inherit (lib)
escapeShellArgs
getExe
lists
literalExpression
maintainers
mdDoc
mkEnableOption
mkIf
mkOption
mkPackageOption
types;
cfg = config.services.dnsproxy;
yaml = pkgs.formats.yaml { };
configFile = yaml.generate "config.yaml" cfg.settings;
finalFlags = (lists.optional (cfg.settings != { }) "--config-path=${configFile}") ++ cfg.flags;
in
{
options.services.dnsproxy = {
enable = mkEnableOption (lib.mdDoc "dnsproxy");
package = mkPackageOption pkgs "dnsproxy" { };
settings = mkOption {
type = yaml.type;
default = { };
example = literalExpression ''
{
bootstrap = [
"8.8.8.8:53"
];
listen-addrs = [
"0.0.0.0"
];
listen-ports = [
53
];
upstream = [
"1.1.1.1:53"
];
}
'';
description = mdDoc ''
Contents of the `config.yaml` config file.
The `--config-path` argument will only be passed if this set is not empty.
See <https://github.com/AdguardTeam/dnsproxy/blob/master/config.yaml.dist>.
'';
};
flags = mkOption {
type = types.listOf types.str;
default = [ ];
example = [ "--upstream=1.1.1.1:53" ];
description = lib.mdDoc ''
A list of extra command-line flags to pass to dnsproxy. For details on the
available options, see <https://github.com/AdguardTeam/dnsproxy#usage>.
Keep in mind that options passed through command-line flags override
config options.
'';
};
};
config = mkIf cfg.enable {
systemd.services.dnsproxy = {
description = "Simple DNS proxy with DoH, DoT, DoQ and DNSCrypt support";
after = [ "network.target" "nss-lookup.target" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
ExecStart = "${getExe cfg.package} ${escapeShellArgs finalFlags}";
Restart = "always";
RestartSec = 10;
DynamicUser = true;
AmbientCapabilities = "CAP_NET_BIND_SERVICE";
LockPersonality = true;
MemoryDenyWriteExecute = true;
NoNewPrivileges = true;
ProtectClock = true;
ProtectHome = true;
ProtectHostname = true;
ProtectKernelLogs = true;
RemoveIPC = true;
RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
RestrictNamespaces = true;
RestrictRealtime = true;
RestrictSUIDSGID = true;
SystemCallArchitectures = "native";
SystemCallErrorNumber = "EPERM";
SystemCallFilter = [ "@system-service" "~@privileged @resources" ];
};
};
};
meta.maintainers = with maintainers; [ diogotcorreia ];
}
|