86 lines
3 KiB
Nix
86 lines
3 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
let
|
|
inherit (lib) types;
|
|
cfg = config.services.croc;
|
|
rootDir = "/run/croc";
|
|
in
|
|
{
|
|
options.services.croc = {
|
|
enable = lib.mkEnableOption "croc relay";
|
|
ports = lib.mkOption {
|
|
type = with types; listOf port;
|
|
default = [9009 9010 9011 9012 9013];
|
|
description = lib.mdDoc "Ports of the relay.";
|
|
};
|
|
pass = lib.mkOption {
|
|
type = with types; either path str;
|
|
default = "pass123";
|
|
description = lib.mdDoc "Password or passwordfile for the relay.";
|
|
};
|
|
openFirewall = lib.mkEnableOption "opening of the peer port(s) in the firewall";
|
|
debug = lib.mkEnableOption "debug logs";
|
|
};
|
|
|
|
config = lib.mkIf cfg.enable {
|
|
systemd.services.croc = {
|
|
after = [ "network.target" ];
|
|
wantedBy = [ "multi-user.target" ];
|
|
serviceConfig = {
|
|
ExecStart = "${pkgs.croc}/bin/croc --pass '${cfg.pass}' ${lib.optionalString cfg.debug "--debug"} relay --ports ${lib.concatMapStringsSep "," toString cfg.ports}";
|
|
# The following options are only for optimizing:
|
|
# systemd-analyze security croc
|
|
AmbientCapabilities = "";
|
|
CapabilityBoundingSet = "";
|
|
DynamicUser = true;
|
|
# ProtectClock= adds DeviceAllow=char-rtc r
|
|
DeviceAllow = "";
|
|
LockPersonality = true;
|
|
MemoryDenyWriteExecute = true;
|
|
MountAPIVFS = true;
|
|
NoNewPrivileges = true;
|
|
PrivateDevices = true;
|
|
PrivateMounts = true;
|
|
PrivateNetwork = lib.mkDefault false;
|
|
PrivateTmp = true;
|
|
PrivateUsers = true;
|
|
ProcSubset = "pid";
|
|
ProtectClock = true;
|
|
ProtectControlGroups = true;
|
|
ProtectHome = true;
|
|
ProtectHostname = true;
|
|
ProtectKernelLogs = true;
|
|
ProtectKernelModules = true;
|
|
ProtectKernelTunables = true;
|
|
ProtectProc = "invisible";
|
|
ProtectSystem = "strict";
|
|
RemoveIPC = true;
|
|
RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
|
|
RestrictNamespaces = true;
|
|
RestrictRealtime = true;
|
|
RestrictSUIDSGID = true;
|
|
RootDirectory = rootDir;
|
|
# Avoid mounting rootDir in the own rootDir of ExecStart='s mount namespace.
|
|
InaccessiblePaths = [ "-+${rootDir}" ];
|
|
BindReadOnlyPaths = [
|
|
builtins.storeDir
|
|
] ++ lib.optional (types.path.check cfg.pass) cfg.pass;
|
|
# This is for BindReadOnlyPaths=
|
|
# to allow traversal of directories they create in RootDirectory=.
|
|
UMask = "0066";
|
|
# Create rootDir in the host's mount namespace.
|
|
RuntimeDirectory = [(baseNameOf rootDir)];
|
|
RuntimeDirectoryMode = "700";
|
|
SystemCallFilter = [
|
|
"@system-service"
|
|
"~@aio" "~@keyring" "~@memlock" "~@privileged" "~@resources" "~@setuid" "~@sync" "~@timer"
|
|
];
|
|
SystemCallArchitectures = "native";
|
|
SystemCallErrorNumber = "EPERM";
|
|
};
|
|
};
|
|
|
|
networking.firewall.allowedTCPPorts = lib.mkIf cfg.openFirewall cfg.ports;
|
|
};
|
|
|
|
meta.maintainers = with lib.maintainers; [ hax404 julm ];
|
|
}
|