91 lines
2.9 KiB
Nix
91 lines
2.9 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.services.cloudflare-warp;
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in
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{
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options.services.cloudflare-warp = {
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enable = lib.mkEnableOption "Cloudflare Zero Trust client daemon";
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package = lib.mkPackageOption pkgs "cloudflare-warp" { };
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rootDir = lib.mkOption {
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type = lib.types.str;
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default = "/var/lib/cloudflare-warp";
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description = ''
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Working directory for the warp-svc daemon.
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'';
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};
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udpPort = lib.mkOption {
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type = lib.types.port;
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default = 2408;
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description = ''
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The UDP port to open in the firewall. Warp uses port 2408 by default, but fallback ports can be used
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if that conflicts with another service. See the [firewall documentation](https://developers.cloudflare.com/cloudflare-one/connections/connect-devices/warp/deployment/firewall#warp-udp-ports)
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for the pre-configured available fallback ports.
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'';
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};
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openFirewall = lib.mkEnableOption "opening UDP ports in the firewall" // {
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default = true;
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};
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};
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config = lib.mkIf cfg.enable {
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environment.systemPackages = [ cfg.package ];
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networking.firewall = lib.mkIf cfg.openFirewall {
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allowedUDPPorts = [ cfg.udpPort ];
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};
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systemd.tmpfiles.rules = [
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"d ${cfg.rootDir} - root root"
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"z ${cfg.rootDir} - root root"
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];
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systemd.services.cloudflare-warp = {
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enable = true;
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description = "Cloudflare Zero Trust Client Daemon";
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# lsof is used by the service to determine which UDP port to bind to
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# in the case that it detects collisions.
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path = [ pkgs.lsof ];
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requires = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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serviceConfig =
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let
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caps = [
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"CAP_NET_ADMIN"
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"CAP_NET_BIND_SERVICE"
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"CAP_SYS_PTRACE"
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];
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in
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{
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Type = "simple";
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ExecStart = "${cfg.package}/bin/warp-svc";
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ReadWritePaths = [ "${cfg.rootDir}" "/etc/resolv.conf" ];
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CapabilityBoundingSet = caps;
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AmbientCapabilities = caps;
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Restart = "always";
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RestartSec = 5;
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Environment = [ "RUST_BACKTRACE=full" ];
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WorkingDirectory = cfg.rootDir;
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# See the systemd.exec docs for the canonicalized paths, the service
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# makes use of them for logging, and account state info tracking.
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# https://www.freedesktop.org/software/systemd/man/latest/systemd.exec.html#RuntimeDirectory=
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StateDirectory = "cloudflare-warp";
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RuntimeDirectory = "cloudflare-warp";
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LogsDirectory = "cloudflare-warp";
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# The service needs to write to /etc/resolv.conf to configure DNS, so that file would have to
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# be world read/writable to run as anything other than root.
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User = "root";
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Group = "root";
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};
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};
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};
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meta.maintainers = with lib.maintainers; [ treyfortmuller ];
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}
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