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85 lines
2.5 KiB
Nix
85 lines
2.5 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.libreddit;
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args = concatStringsSep " " ([
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"--port ${toString cfg.port}"
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"--address ${cfg.address}"
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]);
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in
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{
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options = {
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services.libreddit = {
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enable = mkEnableOption (lib.mdDoc "Private front-end for Reddit");
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address = mkOption {
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default = "0.0.0.0";
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example = "127.0.0.1";
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type = types.str;
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description = lib.mdDoc "The address to listen on";
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};
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port = mkOption {
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default = 8080;
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example = 8000;
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type = types.port;
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description = lib.mdDoc "The port to listen on";
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};
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openFirewall = mkOption {
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type = types.bool;
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default = false;
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description = lib.mdDoc "Open ports in the firewall for the libreddit web interface";
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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.libreddit = {
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description = "Private front-end for Reddit";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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serviceConfig = {
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DynamicUser = true;
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ExecStart = "${pkgs.libreddit}/bin/libreddit ${args}";
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AmbientCapabilities = lib.mkIf (cfg.port < 1024) [ "CAP_NET_BIND_SERVICE" ];
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Restart = "on-failure";
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RestartSec = "2s";
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# Hardening
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CapabilityBoundingSet = if (cfg.port < 1024) then [ "CAP_NET_BIND_SERVICE" ] else [ "" ];
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DeviceAllow = [ "" ];
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LockPersonality = true;
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MemoryDenyWriteExecute = true;
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PrivateDevices = true;
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# A private user cannot have process capabilities on the host's user
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# namespace and thus CAP_NET_BIND_SERVICE has no effect.
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PrivateUsers = (cfg.port >= 1024);
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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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ProtectKernelModules = true;
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ProtectKernelTunables = true;
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ProtectProc = "invisible";
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RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
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RestrictNamespaces = true;
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RestrictRealtime = true;
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RestrictSUIDSGID = true;
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SystemCallArchitectures = "native";
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SystemCallFilter = [ "@system-service" "~@privileged" "~@resources" ];
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UMask = "0077";
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};
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};
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networking.firewall = mkIf cfg.openFirewall {
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allowedTCPPorts = [ cfg.port ];
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};
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};
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}
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