99 lines
3.2 KiB
Nix
99 lines
3.2 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.chisel-server;
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in {
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options = {
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services.chisel-server = {
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enable = mkEnableOption (mdDoc "Chisel Tunnel Server");
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host = mkOption {
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description = mdDoc "Address to listen on, falls back to 0.0.0.0";
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type = with types; nullOr str;
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default = null;
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example = "[::1]";
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};
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port = mkOption {
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description = mdDoc "Port to listen on, falls back to 8080";
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type = with types; nullOr int;
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default = null;
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};
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authfile = mkOption {
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description = mdDoc "Path to auth.json file";
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type = with types; nullOr path;
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default = null;
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};
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keepalive = mkOption {
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description = mdDoc "Keepalive interval, falls back to 25s";
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type = with types; nullOr str;
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default = null;
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example = "5s";
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};
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backend = mkOption {
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description = mdDoc "HTTP server to proxy normal requests to";
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type = with types; nullOr str;
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default = null;
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example = "http://127.0.0.1:8888";
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};
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socks5 = mkOption {
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description = mdDoc "Allow clients access to internal SOCKS5 proxy";
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type = types.bool;
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default = false;
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};
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reverse = mkOption {
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description = mdDoc "Allow clients reverse port forwarding";
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type = types.bool;
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default = false;
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};
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};
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};
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config = mkIf cfg.enable {
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systemd.services.chisel-server = {
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description = "Chisel Tunnel Server";
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wantedBy = [ "network-online.target" ];
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serviceConfig = {
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ExecStart = "${pkgs.chisel}/bin/chisel server " + concatStringsSep " " (
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optional (cfg.host != null) "--host ${cfg.host}"
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++ optional (cfg.port != null) "--port ${builtins.toString cfg.port}"
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++ optional (cfg.authfile != null) "--authfile ${cfg.authfile}"
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++ optional (cfg.keepalive != null) "--keepalive ${cfg.keepalive}"
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++ optional (cfg.backend != null) "--backend ${cfg.backend}"
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++ optional cfg.socks5 "--socks5"
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++ optional cfg.reverse "--reverse"
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);
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# Security Hardening
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# Refer to systemd.exec(5) for option descriptions.
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CapabilityBoundingSet = "";
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# implies RemoveIPC=, PrivateTmp=, NoNewPrivileges=, RestrictSUIDSGID=,
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# ProtectSystem=strict, ProtectHome=read-only
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DynamicUser = true;
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LockPersonality = true;
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PrivateDevices = true;
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PrivateUsers = true;
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ProcSubset = "pid";
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ProtectClock = true;
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ProtectControlGroups = true;
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ProtectHome = true;
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ProtectHostname = true;
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ProtectKernelLogs = true;
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ProtectProc = "invisible";
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ProtectKernelModules = true;
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ProtectKernelTunables = true;
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RestrictAddressFamilies = [ "AF_INET" "AF_INET6" "AF_UNIX" ];
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RestrictNamespaces = true;
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RestrictRealtime = true;
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SystemCallArchitectures = "native";
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SystemCallFilter = "~@clock @cpu-emulation @debug @mount @obsolete @reboot @swap @privileged @resources";
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UMask = "0077";
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};
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};
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};
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meta.maintainers = with maintainers; [ clerie ];
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}
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