408 lines
13 KiB
Nix
408 lines
13 KiB
Nix
{ config, options, pkgs, lib, ... }:
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with lib;
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let
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cfg = config.services.rspamd;
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opts = options.services.rspamd;
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postfixCfg = config.services.postfix;
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bindSocketOpts = {options, config, ... }: {
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options = {
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socket = mkOption {
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type = types.str;
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example = "localhost:11333";
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description = ''
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Socket for this worker to listen on in a format acceptable by rspamd.
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'';
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};
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mode = mkOption {
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type = types.str;
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default = "0644";
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description = "Mode to set on unix socket";
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};
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owner = mkOption {
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type = types.str;
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default = "${cfg.user}";
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description = "Owner to set on unix socket";
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};
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group = mkOption {
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type = types.str;
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default = "${cfg.group}";
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description = "Group to set on unix socket";
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};
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rawEntry = mkOption {
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type = types.str;
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internal = true;
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};
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};
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config.rawEntry = let
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maybeOption = option:
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optionalString options.${option}.isDefined " ${option}=${config.${option}}";
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in
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if (!(hasPrefix "/" config.socket)) then "${config.socket}"
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else "${config.socket}${maybeOption "mode"}${maybeOption "owner"}${maybeOption "group"}";
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};
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workerOpts = { name, ... }: {
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options = {
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enable = mkOption {
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type = types.nullOr types.bool;
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default = null;
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description = "Whether to run the rspamd worker.";
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};
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name = mkOption {
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type = types.nullOr types.str;
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default = name;
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description = "Name of the worker";
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};
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type = mkOption {
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type = types.nullOr (types.enum [
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"normal" "controller" "fuzzy_storage" "rspamd_proxy" "lua"
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]);
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description = "The type of this worker";
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};
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bindSockets = mkOption {
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type = types.listOf (types.either types.str (types.submodule bindSocketOpts));
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default = [];
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description = ''
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List of sockets to listen, in format acceptable by rspamd
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'';
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example = [{
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socket = "/run/rspamd.sock";
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mode = "0666";
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owner = "rspamd";
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} "*:11333"];
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apply = value: map (each: if (isString each)
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then if (isUnixSocket each)
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then {socket = each; owner = cfg.user; group = cfg.group; mode = "0644"; rawEntry = "${each}";}
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else {socket = each; rawEntry = "${each}";}
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else each) value;
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};
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count = mkOption {
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type = types.nullOr types.int;
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default = null;
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description = ''
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Number of worker instances to run
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'';
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};
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includes = mkOption {
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type = types.listOf types.str;
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default = [];
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description = ''
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List of files to include in configuration
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'';
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};
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extraConfig = mkOption {
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type = types.lines;
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default = "";
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description = "Additional entries to put verbatim into worker section of rspamd config file.";
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};
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};
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config = mkIf (name == "normal" || name == "controller" || name == "fuzzy" || name == "rspamd_proxy") {
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type = mkDefault name;
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includes = mkDefault [ "$CONFDIR/worker-${if name == "rspamd_proxy" then "proxy" else name}.inc" ];
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bindSockets =
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let
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unixSocket = name: {
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mode = "0660";
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socket = "/run/rspamd/${name}.sock";
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owner = cfg.user;
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group = cfg.group;
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};
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in mkDefault (if name == "normal" then [(unixSocket "rspamd")]
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else if name == "controller" then [ "localhost:11334" ]
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else if name == "rspamd_proxy" then [ (unixSocket "proxy") ]
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else [] );
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};
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};
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isUnixSocket = socket: hasPrefix "/" (if (isString socket) then socket else socket.socket);
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mkBindSockets = enabled: socks: concatStringsSep "\n "
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(flatten (map (each: "bind_socket = \"${each.rawEntry}\";") socks));
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rspamdConfFile = pkgs.writeText "rspamd.conf"
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''
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.include "$CONFDIR/common.conf"
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options {
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pidfile = "$RUNDIR/rspamd.pid";
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.include "$CONFDIR/options.inc"
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.include(try=true; priority=1,duplicate=merge) "$LOCAL_CONFDIR/local.d/options.inc"
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.include(try=true; priority=10) "$LOCAL_CONFDIR/override.d/options.inc"
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}
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logging {
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type = "syslog";
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.include "$CONFDIR/logging.inc"
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.include(try=true; priority=1,duplicate=merge) "$LOCAL_CONFDIR/local.d/logging.inc"
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.include(try=true; priority=10) "$LOCAL_CONFDIR/override.d/logging.inc"
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}
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${concatStringsSep "\n" (mapAttrsToList (name: value: let
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includeName = if name == "rspamd_proxy" then "proxy" else name;
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tryOverride = if value.extraConfig == "" then "true" else "false";
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in ''
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worker "${value.type}" {
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type = "${value.type}";
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${optionalString (value.enable != null)
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"enabled = ${if value.enable != false then "yes" else "no"};"}
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${mkBindSockets value.enable value.bindSockets}
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${optionalString (value.count != null) "count = ${toString value.count};"}
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${concatStringsSep "\n " (map (each: ".include \"${each}\"") value.includes)}
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.include(try=true; priority=1,duplicate=merge) "$LOCAL_CONFDIR/local.d/worker-${includeName}.inc"
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.include(try=${tryOverride}; priority=10) "$LOCAL_CONFDIR/override.d/worker-${includeName}.inc"
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}
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'') cfg.workers)}
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${optionalString (cfg.extraConfig != "") ''
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.include(priority=10) "$LOCAL_CONFDIR/override.d/extra-config.inc"
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''}
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'';
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filterFiles = files: filterAttrs (n: v: v.enable) files;
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rspamdDir = pkgs.linkFarm "etc-rspamd-dir" (
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(mapAttrsToList (name: file: { name = "local.d/${name}"; path = file.source; }) (filterFiles cfg.locals)) ++
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(mapAttrsToList (name: file: { name = "override.d/${name}"; path = file.source; }) (filterFiles cfg.overrides)) ++
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(optional (cfg.localLuaRules != null) { name = "rspamd.local.lua"; path = cfg.localLuaRules; }) ++
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[ { name = "rspamd.conf"; path = rspamdConfFile; } ]
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);
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configFileModule = prefix: { name, config, ... }: {
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options = {
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enable = mkOption {
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type = types.bool;
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default = true;
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description = ''
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Whether this file ${prefix} should be generated. This
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option allows specific ${prefix} files to be disabled.
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'';
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};
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text = mkOption {
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default = null;
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type = types.nullOr types.lines;
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description = "Text of the file.";
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};
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source = mkOption {
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type = types.path;
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description = "Path of the source file.";
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};
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};
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config = {
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source = mkIf (config.text != null) (
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let name' = "rspamd-${prefix}-" + baseNameOf name;
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in mkDefault (pkgs.writeText name' config.text));
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};
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};
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configOverrides =
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(mapAttrs' (n: v: nameValuePair "worker-${if n == "rspamd_proxy" then "proxy" else n}.inc" {
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text = v.extraConfig;
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})
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(filterAttrs (n: v: v.extraConfig != "") cfg.workers))
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// (if cfg.extraConfig == "" then {} else {
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"extra-config.inc".text = cfg.extraConfig;
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});
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in
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{
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###### interface
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options = {
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services.rspamd = {
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enable = mkEnableOption "rspamd, the Rapid spam filtering system";
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debug = mkOption {
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type = types.bool;
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default = false;
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description = "Whether to run the rspamd daemon in debug mode.";
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};
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locals = mkOption {
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type = with types; attrsOf (submodule (configFileModule "locals"));
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default = {};
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description = ''
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Local configuration files, written into <filename>/etc/rspamd/local.d/{name}</filename>.
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'';
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example = literalExample ''
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{ "redis.conf".source = "/nix/store/.../etc/dir/redis.conf";
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"arc.conf".text = "allow_envfrom_empty = true;";
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}
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'';
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};
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overrides = mkOption {
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type = with types; attrsOf (submodule (configFileModule "overrides"));
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default = {};
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description = ''
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Overridden configuration files, written into <filename>/etc/rspamd/override.d/{name}</filename>.
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'';
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example = literalExample ''
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{ "redis.conf".source = "/nix/store/.../etc/dir/redis.conf";
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"arc.conf".text = "allow_envfrom_empty = true;";
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}
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'';
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};
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localLuaRules = mkOption {
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default = null;
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type = types.nullOr types.path;
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description = ''
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Path of file to link to <filename>/etc/rspamd/rspamd.local.lua</filename> for local
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rules written in Lua
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'';
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};
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workers = mkOption {
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type = with types; attrsOf (submodule workerOpts);
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description = ''
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Attribute set of workers to start.
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'';
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default = {
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normal = {};
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controller = {};
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};
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example = literalExample ''
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{
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normal = {
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includes = [ "$CONFDIR/worker-normal.inc" ];
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bindSockets = [{
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socket = "/run/rspamd/rspamd.sock";
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mode = "0660";
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owner = "${cfg.user}";
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group = "${cfg.group}";
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}];
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};
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controller = {
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includes = [ "$CONFDIR/worker-controller.inc" ];
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bindSockets = [ "[::1]:11334" ];
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};
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}
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'';
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};
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extraConfig = mkOption {
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type = types.lines;
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default = "";
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description = ''
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Extra configuration to add at the end of the rspamd configuration
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file.
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'';
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};
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user = mkOption {
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type = types.string;
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default = "rspamd";
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description = ''
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User to use when no root privileges are required.
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'';
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};
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group = mkOption {
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type = types.string;
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default = "rspamd";
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description = ''
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Group to use when no root privileges are required.
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'';
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};
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postfix = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = "Add rspamd milter to postfix main.conf";
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};
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config = mkOption {
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type = with types; attrsOf (either bool (either str (listOf str)));
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description = ''
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Addon to postfix configuration
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'';
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default = {
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smtpd_milters = ["unix:/run/rspamd/rspamd-milter.sock"];
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non_smtpd_milters = ["unix:/run/rspamd/rspamd-milter.sock"];
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};
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example = {
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smtpd_milters = ["unix:/run/rspamd/rspamd-milter.sock"];
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non_smtpd_milters = ["unix:/run/rspamd/rspamd-milter.sock"];
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};
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};
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};
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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services.rspamd.overrides = configOverrides;
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services.rspamd.workers = mkIf cfg.postfix.enable {
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controller = {};
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rspamd_proxy = {
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bindSockets = [ {
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mode = "0660";
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socket = "/run/rspamd/rspamd-milter.sock";
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owner = cfg.user;
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group = postfixCfg.group;
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} ];
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extraConfig = ''
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upstream "local" {
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default = yes; # Self-scan upstreams are always default
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self_scan = yes; # Enable self-scan
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}
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'';
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};
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};
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services.postfix.config = mkIf cfg.postfix.enable cfg.postfix.config;
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# Allow users to run 'rspamc' and 'rspamadm'.
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environment.systemPackages = [ pkgs.rspamd ];
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users.users = singleton {
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name = cfg.user;
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description = "rspamd daemon";
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uid = config.ids.uids.rspamd;
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group = cfg.group;
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};
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users.groups = singleton {
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name = cfg.group;
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gid = config.ids.gids.rspamd;
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};
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environment.etc."rspamd".source = rspamdDir;
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systemd.services.rspamd = {
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description = "Rspamd Service";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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restartTriggers = [ rspamdDir ];
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serviceConfig = {
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ExecStart = "${pkgs.rspamd}/bin/rspamd ${optionalString cfg.debug "-d"} --user=${cfg.user} --group=${cfg.group} --pid=/run/rspamd.pid -c /etc/rspamd/rspamd.conf -f";
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Restart = "always";
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RuntimeDirectory = "rspamd";
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PrivateTmp = true;
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};
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preStart = ''
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${pkgs.coreutils}/bin/mkdir -p /var/lib/rspamd
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${pkgs.coreutils}/bin/chown ${cfg.user}:${cfg.group} /var/lib/rspamd
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'';
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};
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};
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imports = [
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(mkRemovedOptionModule [ "services" "rspamd" "socketActivation" ]
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"Socket activation never worked correctly and could at this time not be fixed and so was removed")
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(mkRenamedOptionModule [ "services" "rspamd" "bindSocket" ] [ "services" "rspamd" "workers" "normal" "bindSockets" ])
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(mkRenamedOptionModule [ "services" "rspamd" "bindUISocket" ] [ "services" "rspamd" "workers" "controller" "bindSockets" ])
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];
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}
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