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|
{ config, lib, pkgs, ... }:
let
cfg = config.services.mullvad-vpn;
in
with lib;
{
options.services.mullvad-vpn = {
enable = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc ''
This option enables Mullvad VPN daemon.
This sets {option}`networking.firewall.checkReversePath` to "loose", which might be undesirable for security.
'';
};
enableExcludeWrapper = mkOption {
type = types.bool;
default = true;
description = lib.mdDoc ''
This option activates the wrapper that allows the use of mullvad-exclude.
Might have minor security impact, so consider disabling if you do not use the feature.
'';
};
package = mkOption {
type = types.package;
default = pkgs.mullvad;
defaultText = literalExpression "pkgs.mullvad";
description = lib.mdDoc ''
The Mullvad package to use. `pkgs.mullvad` only provides the CLI tool, `pkgs.mullvad-vpn` provides both the CLI and the GUI.
'';
};
};
config = mkIf cfg.enable {
boot.kernelModules = [ "tun" ];
environment.systemPackages = [ cfg.package ];
# mullvad-daemon writes to /etc/iproute2/rt_tables
networking.iproute2.enable = true;
# See https://github.com/NixOS/nixpkgs/issues/113589
networking.firewall.checkReversePath = "loose";
# See https://github.com/NixOS/nixpkgs/issues/176603
security.wrappers.mullvad-exclude = mkIf cfg.enableExcludeWrapper {
setuid = true;
owner = "root";
group = "root";
source = "${cfg.package}/bin/mullvad-exclude";
};
systemd.services.mullvad-daemon = {
description = "Mullvad VPN daemon";
wantedBy = [ "multi-user.target" ];
wants = [ "network.target" ];
after = [
"network-online.target"
"NetworkManager.service"
"systemd-resolved.service"
];
path = [
pkgs.iproute2
# Needed for ping
"/run/wrappers"
# See https://github.com/NixOS/nixpkgs/issues/262681
] ++ (lib.optional config.networking.resolvconf.enable
config.networking.resolvconf.package);
startLimitBurst = 5;
startLimitIntervalSec = 20;
serviceConfig = {
ExecStart = "${cfg.package}/bin/mullvad-daemon -v --disable-stdout-timestamps";
Restart = "always";
RestartSec = 1;
};
};
};
meta.maintainers = with maintainers; [ arcuru ymarkus ];
}
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