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nixpkgs/nixos/modules/services/mail/rspamd.nix
pennae bd56368848 nixos/*: md-convert hidden plaintext options
most of these are hidden because they're either part of a submodule that
doesn't have its type rendered (eg because the submodule type is used in
an either type) or because they are explicitly hidden. some of them are
merely hidden from nix-doc-munge by how their option is put together.
2022-08-31 16:32:54 +02:00

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{ config, options, pkgs, lib, ... }:
with lib;
let
cfg = config.services.rspamd;
opt = options.services.rspamd;
postfixCfg = config.services.postfix;
bindSocketOpts = {options, config, ... }: {
options = {
socket = mkOption {
type = types.str;
example = "localhost:11333";
description = lib.mdDoc ''
Socket for this worker to listen on in a format acceptable by rspamd.
'';
};
mode = mkOption {
type = types.str;
default = "0644";
description = lib.mdDoc "Mode to set on unix socket";
};
owner = mkOption {
type = types.str;
default = "${cfg.user}";
description = lib.mdDoc "Owner to set on unix socket";
};
group = mkOption {
type = types.str;
default = "${cfg.group}";
description = lib.mdDoc "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"}";
};
traceWarning = w: x: builtins.trace "warning: ${w}" x;
workerOpts = { name, options, ... }: {
options = {
enable = mkOption {
type = types.nullOr types.bool;
default = null;
description = lib.mdDoc "Whether to run the rspamd worker.";
};
name = mkOption {
type = types.nullOr types.str;
default = name;
description = lib.mdDoc "Name of the worker";
};
type = mkOption {
type = types.nullOr (types.enum [
"normal" "controller" "fuzzy" "rspamd_proxy" "lua" "proxy"
]);
description = lib.mdDoc ''
The type of this worker. The type `proxy` is
deprecated and only kept for backwards compatibility and should be
replaced with `rspamd_proxy`.
'';
apply = let
from = "services.rspamd.workers.\"${name}\".type";
files = options.type.files;
warning = "The option `${from}` defined in ${showFiles files} has enum value `proxy` which has been renamed to `rspamd_proxy`";
in x: if x == "proxy" then traceWarning warning "rspamd_proxy" else x;
};
bindSockets = mkOption {
type = types.listOf (types.either types.str (types.submodule bindSocketOpts));
default = [];
description = lib.mdDoc ''
List of sockets to listen, in format acceptable by rspamd
'';
example = [{
socket = "/run/rspamd.sock";
mode = "0666";
owner = "rspamd";
} "*:11333"];
apply = value: map (each: if (isString each)
then if (isUnixSocket each)
then {socket = each; owner = cfg.user; group = cfg.group; mode = "0644"; rawEntry = "${each}";}
else {socket = each; rawEntry = "${each}";}
else each) value;
};
count = mkOption {
type = types.nullOr types.int;
default = null;
description = lib.mdDoc ''
Number of worker instances to run
'';
};
includes = mkOption {
type = types.listOf types.str;
default = [];
description = lib.mdDoc ''
List of files to include in configuration
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = lib.mdDoc "Additional entries to put verbatim into worker section of rspamd config file.";
};
};
config = mkIf (name == "normal" || name == "controller" || name == "fuzzy" || name == "rspamd_proxy") {
type = mkDefault name;
includes = mkDefault [ "$CONFDIR/worker-${if name == "rspamd_proxy" then "proxy" else name}.inc" ];
bindSockets =
let
unixSocket = name: {
mode = "0660";
socket = "/run/rspamd/${name}.sock";
owner = cfg.user;
group = cfg.group;
};
in mkDefault (if name == "normal" then [(unixSocket "rspamd")]
else if name == "controller" then [ "localhost:11334" ]
else if name == "rspamd_proxy" then [ (unixSocket "proxy") ]
else [] );
};
};
isUnixSocket = socket: hasPrefix "/" (if (isString socket) then socket else socket.socket);
mkBindSockets = enabled: socks: concatStringsSep "\n "
(flatten (map (each: "bind_socket = \"${each.rawEntry}\";") socks));
rspamdConfFile = pkgs.writeText "rspamd.conf"
''
.include "$CONFDIR/common.conf"
options {
pidfile = "$RUNDIR/rspamd.pid";
.include "$CONFDIR/options.inc"
.include(try=true; priority=1,duplicate=merge) "$LOCAL_CONFDIR/local.d/options.inc"
.include(try=true; priority=10) "$LOCAL_CONFDIR/override.d/options.inc"
}
logging {
type = "syslog";
.include "$CONFDIR/logging.inc"
.include(try=true; priority=1,duplicate=merge) "$LOCAL_CONFDIR/local.d/logging.inc"
.include(try=true; priority=10) "$LOCAL_CONFDIR/override.d/logging.inc"
}
${concatStringsSep "\n" (mapAttrsToList (name: value: let
includeName = if name == "rspamd_proxy" then "proxy" else name;
tryOverride = boolToString (value.extraConfig == "");
in ''
worker "${value.type}" {
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)}
.include(try=true; priority=1,duplicate=merge) "$LOCAL_CONFDIR/local.d/worker-${includeName}.inc"
.include(try=${tryOverride}; priority=10) "$LOCAL_CONFDIR/override.d/worker-${includeName}.inc"
}
'') cfg.workers)}
${optionalString (cfg.extraConfig != "") ''
.include(priority=10) "$LOCAL_CONFDIR/override.d/extra-config.inc"
''}
'';
filterFiles = files: filterAttrs (n: v: v.enable) files;
rspamdDir = pkgs.linkFarm "etc-rspamd-dir" (
(mapAttrsToList (name: file: { name = "local.d/${name}"; path = file.source; }) (filterFiles cfg.locals)) ++
(mapAttrsToList (name: file: { name = "override.d/${name}"; path = file.source; }) (filterFiles cfg.overrides)) ++
(optional (cfg.localLuaRules != null) { name = "rspamd.local.lua"; path = cfg.localLuaRules; }) ++
[ { name = "rspamd.conf"; path = rspamdConfFile; } ]
);
configFileModule = prefix: { name, config, ... }: {
options = {
enable = mkOption {
type = types.bool;
default = true;
description = lib.mdDoc ''
Whether this file ${prefix} should be generated. This
option allows specific ${prefix} files to be disabled.
'';
};
text = mkOption {
default = null;
type = types.nullOr types.lines;
description = lib.mdDoc "Text of the file.";
};
source = mkOption {
type = types.path;
description = lib.mdDoc "Path of the source file.";
};
};
config = {
source = mkIf (config.text != null) (
let name' = "rspamd-${prefix}-" + baseNameOf name;
in mkDefault (pkgs.writeText name' config.text));
};
};
configOverrides =
(mapAttrs' (n: v: nameValuePair "worker-${if n == "rspamd_proxy" then "proxy" else n}.inc" {
text = v.extraConfig;
})
(filterAttrs (n: v: v.extraConfig != "") cfg.workers))
// (if cfg.extraConfig == "" then {} else {
"extra-config.inc".text = cfg.extraConfig;
});
in
{
###### interface
options = {
services.rspamd = {
enable = mkEnableOption (lib.mdDoc "rspamd, the Rapid spam filtering system");
debug = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc "Whether to run the rspamd daemon in debug mode.";
};
locals = mkOption {
type = with types; attrsOf (submodule (configFileModule "locals"));
default = {};
description = lib.mdDoc ''
Local configuration files, written into {file}`/etc/rspamd/local.d/{name}`.
'';
example = literalExpression ''
{ "redis.conf".source = "/nix/store/.../etc/dir/redis.conf";
"arc.conf".text = "allow_envfrom_empty = true;";
}
'';
};
overrides = mkOption {
type = with types; attrsOf (submodule (configFileModule "overrides"));
default = {};
description = lib.mdDoc ''
Overridden configuration files, written into {file}`/etc/rspamd/override.d/{name}`.
'';
example = literalExpression ''
{ "redis.conf".source = "/nix/store/.../etc/dir/redis.conf";
"arc.conf".text = "allow_envfrom_empty = true;";
}
'';
};
localLuaRules = mkOption {
default = null;
type = types.nullOr types.path;
description = lib.mdDoc ''
Path of file to link to {file}`/etc/rspamd/rspamd.local.lua` for local
rules written in Lua
'';
};
workers = mkOption {
type = with types; attrsOf (submodule workerOpts);
description = lib.mdDoc ''
Attribute set of workers to start.
'';
default = {
normal = {};
controller = {};
};
example = literalExpression ''
{
normal = {
includes = [ "$CONFDIR/worker-normal.inc" ];
bindSockets = [{
socket = "/run/rspamd/rspamd.sock";
mode = "0660";
owner = "''${config.${opt.user}}";
group = "''${config.${opt.group}}";
}];
};
controller = {
includes = [ "$CONFDIR/worker-controller.inc" ];
bindSockets = [ "[::1]:11334" ];
};
}
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = lib.mdDoc ''
Extra configuration to add at the end of the rspamd configuration
file.
'';
};
user = mkOption {
type = types.str;
default = "rspamd";
description = lib.mdDoc ''
User to use when no root privileges are required.
'';
};
group = mkOption {
type = types.str;
default = "rspamd";
description = lib.mdDoc ''
Group to use when no root privileges are required.
'';
};
postfix = {
enable = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc "Add rspamd milter to postfix main.conf";
};
config = mkOption {
type = with types; attrsOf (oneOf [ bool str (listOf str) ]);
description = lib.mdDoc ''
Addon to postfix configuration
'';
default = {
smtpd_milters = ["unix:/run/rspamd/rspamd-milter.sock"];
non_smtpd_milters = ["unix:/run/rspamd/rspamd-milter.sock"];
};
};
};
};
};
###### implementation
config = mkIf cfg.enable {
services.rspamd.overrides = configOverrides;
services.rspamd.workers = mkIf cfg.postfix.enable {
controller = {};
rspamd_proxy = {
bindSockets = [ {
mode = "0660";
socket = "/run/rspamd/rspamd-milter.sock";
owner = cfg.user;
group = postfixCfg.group;
} ];
extraConfig = ''
upstream "local" {
default = yes; # Self-scan upstreams are always default
self_scan = yes; # Enable self-scan
}
'';
};
};
services.postfix.config = mkIf cfg.postfix.enable cfg.postfix.config;
systemd.services.postfix = mkIf cfg.postfix.enable {
serviceConfig.SupplementaryGroups = [ postfixCfg.group ];
};
# Allow users to run 'rspamc' and 'rspamadm'.
environment.systemPackages = [ pkgs.rspamd ];
users.users.${cfg.user} = {
description = "rspamd daemon";
uid = config.ids.uids.rspamd;
group = cfg.group;
};
users.groups.${cfg.group} = {
gid = config.ids.gids.rspamd;
};
environment.etc.rspamd.source = rspamdDir;
systemd.services.rspamd = {
description = "Rspamd Service";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
restartTriggers = [ rspamdDir ];
serviceConfig = {
ExecStart = "${pkgs.rspamd}/bin/rspamd ${optionalString cfg.debug "-d"} -c /etc/rspamd/rspamd.conf -f";
Restart = "always";
User = "${cfg.user}";
Group = "${cfg.group}";
SupplementaryGroups = mkIf cfg.postfix.enable [ postfixCfg.group ];
RuntimeDirectory = "rspamd";
RuntimeDirectoryMode = "0755";
StateDirectory = "rspamd";
StateDirectoryMode = "0700";
AmbientCapabilities = [];
CapabilityBoundingSet = "";
DevicePolicy = "closed";
LockPersonality = true;
NoNewPrivileges = true;
PrivateDevices = true;
PrivateMounts = true;
PrivateTmp = true;
# we need to chown socket to rspamd-milter
PrivateUsers = !cfg.postfix.enable;
ProtectClock = true;
ProtectControlGroups = true;
ProtectHome = true;
ProtectHostname = true;
ProtectKernelLogs = true;
ProtectKernelModules = true;
ProtectKernelTunables = true;
ProtectSystem = "strict";
RemoveIPC = true;
RestrictAddressFamilies = [ "AF_INET" "AF_INET6" "AF_UNIX" ];
RestrictNamespaces = true;
RestrictRealtime = true;
RestrictSUIDSGID = true;
SystemCallArchitectures = "native";
SystemCallFilter = "@system-service";
UMask = "0077";
};
};
};
imports = [
(mkRemovedOptionModule [ "services" "rspamd" "socketActivation" ]
"Socket activation never worked correctly and could at this time not be fixed and so was removed")
(mkRenamedOptionModule [ "services" "rspamd" "bindSocket" ] [ "services" "rspamd" "workers" "normal" "bindSockets" ])
(mkRenamedOptionModule [ "services" "rspamd" "bindUISocket" ] [ "services" "rspamd" "workers" "controller" "bindSockets" ])
(mkRemovedOptionModule [ "services" "rmilter" ] "Use services.rspamd.* instead to set up milter service")
];
}