nixpkgs-suyu/nixos/modules/services/mail/rspamd.nix

341 lines
11 KiB
Nix

{ config, options, pkgs, lib, ... }:
with lib;
let
cfg = config.services.rspamd;
opts = options.services.rspamd;
bindSocketOpts = {options, config, ... }: {
options = {
socket = mkOption {
type = types.str;
example = "localhost:11333";
description = ''
Socket for this worker to listen on in a format acceptable by rspamd.
'';
};
mode = mkOption {
type = types.str;
default = "0644";
description = "Mode to set on unix socket";
};
owner = mkOption {
type = types.str;
default = "${cfg.user}";
description = "Owner to set on unix socket";
};
group = mkOption {
type = types.str;
default = "${cfg.group}";
description = "Group to set on unix socket";
};
rawEntry = mkOption {
type = types.str;
internal = true;
};
};
config.rawEntry = let
maybeOption = option:
optionalString options.${option}.isDefined " ${option}=${config.${option}}";
in
if (!(hasPrefix "/" config.socket)) then "${config.socket}"
else "${config.socket}${maybeOption "mode"}${maybeOption "owner"}${maybeOption "group"}";
};
workerOpts = { name, ... }: {
options = {
enable = mkOption {
type = types.nullOr types.bool;
default = null;
description = "Whether to run the rspamd worker.";
};
name = mkOption {
type = types.nullOr types.str;
default = name;
description = "Name of the worker";
};
type = mkOption {
type = types.nullOr (types.enum [
"normal" "controller" "fuzzy_storage" "proxy" "lua"
]);
description = "The type of this worker";
};
bindSockets = mkOption {
type = types.listOf (types.either types.str (types.submodule bindSocketOpts));
default = [];
description = ''
List of sockets to listen, in format acceptable by rspamd
'';
example = [{
socket = "/run/rspamd.sock";
mode = "0666";
owner = "rspamd";
} "*:11333"];
apply = value: map (each: if (isString each)
then if (isUnixSocket each)
then {socket = each; owner = cfg.user; group = cfg.group; mode = "0644"; rawEntry = "${each}";}
else {socket = each; rawEntry = "${each}";}
else each) value;
};
count = mkOption {
type = types.nullOr types.int;
default = null;
description = ''
Number of worker instances to run
'';
};
includes = mkOption {
type = types.listOf types.str;
default = [];
description = ''
List of files to include in configuration
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = "Additional entries to put verbatim into worker section of rspamd config file.";
};
};
config = mkIf (name == "normal" || name == "controller" || name == "fuzzy") {
type = mkDefault name;
includes = mkDefault [ "$CONFDIR/worker-${name}.inc" ];
bindSockets = mkDefault (if name == "normal"
then [{
socket = "/run/rspamd/rspamd.sock";
mode = "0660";
owner = cfg.user;
group = cfg.group;
}]
else if name == "controller"
then [ "localhost:11334" ]
else [] );
};
};
indexOf = default: start: list: e:
if list == []
then default
else if (head list) == e then start
else (indexOf default (start + (length (listenStreams (head list).socket))) (tail list) e);
systemdSocket = indexOf (abort "Socket not found") 0 allSockets;
isUnixSocket = socket: hasPrefix "/" (if (isString socket) then socket else socket.socket);
isPort = hasPrefix "*:";
isIPv4Socket = hasPrefix "*v4:";
isIPv6Socket = hasPrefix "*v6:";
isLocalHost = hasPrefix "localhost:";
listenStreams = socket:
if (isLocalHost socket) then
let port = (removePrefix "localhost:" socket);
in [ "127.0.0.1:${port}" ] ++ (if config.networking.enableIPv6 then ["[::1]:${port}"] else [])
else if (isIPv6Socket socket) then [removePrefix "*v6:" socket]
else if (isPort socket) then [removePrefix "*:" socket]
else if (isIPv4Socket socket) then
throw "error: IPv4 only socket not supported in rspamd with socket activation"
else if (length (splitString " " socket)) != 1 then
throw "error: string options not supported in rspamd with socket activation"
else [socket];
mkBindSockets = enabled: socks: concatStringsSep "\n " (flatten (map (each:
if cfg.socketActivation && enabled != false then
let systemd = (systemdSocket each);
in (imap (idx: e: "bind_socket = \"systemd:${toString (systemd + idx - 1)}\";") (listenStreams each.socket))
else "bind_socket = \"${each.rawEntry}\";") socks));
rspamdConfFile = pkgs.writeText "rspamd.conf"
''
.include "$CONFDIR/common.conf"
options {
pidfile = "$RUNDIR/rspamd.pid";
.include "$CONFDIR/options.inc"
}
logging {
type = "syslog";
.include "$CONFDIR/logging.inc"
}
${concatStringsSep "\n" (mapAttrsToList (name: value: ''
worker ${optionalString (value.name != "normal" && value.name != "controller") "${value.name}"} {
type = "${value.type}";
${optionalString (value.enable != null)
"enabled = ${if value.enable != false then "yes" else "no"};"}
${mkBindSockets value.enable value.bindSockets}
${optionalString (value.count != null) "count = ${toString value.count};"}
${concatStringsSep "\n " (map (each: ".include \"${each}\"") value.includes)}
${value.extraConfig}
}
'') cfg.workers)}
${cfg.extraConfig}
'';
allMappedSockets = flatten (mapAttrsToList (name: value:
if value.enable != false
then imap (idx: each: {
name = "${name}";
index = idx;
value = each;
}) value.bindSockets
else []) cfg.workers);
allSockets = map (e: e.value) allMappedSockets;
allSocketNames = map (each: "rspamd-${each.name}-${toString each.index}.socket") allMappedSockets;
in
{
###### interface
options = {
services.rspamd = {
enable = mkEnableOption "Whether to run the rspamd daemon.";
debug = mkOption {
type = types.bool;
default = false;
description = "Whether to run the rspamd daemon in debug mode.";
};
socketActivation = mkOption {
type = types.bool;
description = ''
Enable systemd socket activation for rspamd.
'';
};
workers = mkOption {
type = with types; attrsOf (submodule workerOpts);
description = ''
Attribute set of workers to start.
'';
default = {
normal = {};
controller = {};
};
example = literalExample ''
{
normal = {
includes = [ "$CONFDIR/worker-normal.inc" ];
bindSockets = [{
socket = "/run/rspamd/rspamd.sock";
mode = "0660";
owner = "${cfg.user}";
group = "${cfg.group}";
}];
};
controller = {
includes = [ "$CONFDIR/worker-controller.inc" ];
bindSockets = [ "[::1]:11334" ];
};
}
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = ''
Extra configuration to add at the end of the rspamd configuration
file.
'';
};
user = mkOption {
type = types.string;
default = "rspamd";
description = ''
User to use when no root privileges are required.
'';
};
group = mkOption {
type = types.string;
default = "rspamd";
description = ''
Group to use when no root privileges are required.
'';
};
};
};
###### implementation
config = mkIf cfg.enable {
services.rspamd.socketActivation = mkDefault (!opts.bindSocket.isDefined && !opts.bindUISocket.isDefined);
assertions = [ {
assertion = !cfg.socketActivation || !(opts.bindSocket.isDefined || opts.bindUISocket.isDefined);
message = "Can't use socketActivation for rspamd when using renamed bind socket options";
} ];
# Allow users to run 'rspamc' and 'rspamadm'.
environment.systemPackages = [ pkgs.rspamd ];
users.extraUsers = singleton {
name = cfg.user;
description = "rspamd daemon";
uid = config.ids.uids.rspamd;
group = cfg.group;
};
users.extraGroups = singleton {
name = cfg.group;
gid = config.ids.gids.rspamd;
};
environment.etc."rspamd.conf".source = rspamdConfFile;
systemd.services.rspamd = {
description = "Rspamd Service";
wantedBy = mkIf (!cfg.socketActivation) [ "multi-user.target" ];
after = [ "network.target" ] ++
(if cfg.socketActivation then allSocketNames else []);
requires = mkIf cfg.socketActivation allSocketNames;
serviceConfig = {
ExecStart = "${pkgs.rspamd}/bin/rspamd ${optionalString cfg.debug "-d"} --user=${cfg.user} --group=${cfg.group} --pid=/run/rspamd.pid -c ${rspamdConfFile} -f";
Restart = "always";
RuntimeDirectory = "rspamd";
PrivateTmp = true;
Sockets = mkIf cfg.socketActivation (concatStringsSep " " allSocketNames);
};
preStart = ''
${pkgs.coreutils}/bin/mkdir -p /var/lib/rspamd
${pkgs.coreutils}/bin/chown ${cfg.user}:${cfg.group} /var/lib/rspamd
'';
};
systemd.sockets = mkIf cfg.socketActivation
(listToAttrs (map (each: {
name = "rspamd-${each.name}-${toString each.index}";
value = {
description = "Rspamd socket ${toString each.index} for worker ${each.name}";
wantedBy = [ "sockets.target" ];
listenStreams = (listenStreams each.value.socket);
socketConfig = {
BindIPv6Only = mkIf (isIPv6Socket each.value.socket) "ipv6-only";
Service = "rspamd.service";
SocketUser = mkIf (isUnixSocket each.value.socket) each.value.owner;
SocketGroup = mkIf (isUnixSocket each.value.socket) each.value.group;
SocketMode = mkIf (isUnixSocket each.value.socket) each.value.mode;
};
};
}) allMappedSockets));
};
imports = [
(mkRenamedOptionModule [ "services" "rspamd" "bindSocket" ] [ "services" "rspamd" "workers" "normal" "bindSockets" ])
(mkRenamedOptionModule [ "services" "rspamd" "bindUISocket" ] [ "services" "rspamd" "workers" "controller" "bindSockets" ])
];
}