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nixpkgs/nixos/modules/services/mail/rmilter.nix
2016-04-28 14:21:18 +03:00

227 lines
5.8 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
rspamdCfg = config.services.rspamd;
cfg = config.services.rmilter;
inetSockets = map (sock: let s = stringSplit ":" sock; in "inet:${last s}:${head s}") cfg.bindInetSockets;
unixSockets = map (sock: "unix:${sock}") cfg.bindUnixSockets;
allSockets = unixSockets ++ inetSockets;
rmilterConf = ''
pidfile = /run/rmilter/rmilter.pid;
bind_socket = ${if cfg.socketActivation then "fd:3" else concatStringsSep ", " allSockets};
tempdir = /tmp;
'' + (with cfg.rspamd; if enable then ''
spamd {
servers = ${concatStringsSep ", " servers};
connect_timeout = 1s;
results_timeout = 20s;
error_time = 10;
dead_time = 300;
maxerrors = 10;
reject_message = "${rejectMessage}";
${optionalString (length whitelist != 0) "whitelist = ${concatStringsSep ", " whitelist};"}
# rspamd_metric - metric for using with rspamd
# Default: "default"
rspamd_metric = "default";
${extraConfig}
};
'' else "") + cfg.extraConfig;
rmilterConfigFile = pkgs.writeText "rmilter.conf" rmilterConf;
in
{
###### interface
options = {
services.rmilter = {
enable = mkOption {
default = cfg.rspamd.enable;
description = "Whether to run the rmilter daemon.";
};
debug = mkOption {
default = false;
description = "Whether to run the rmilter daemon in debug mode.";
};
user = mkOption {
type = types.string;
default = "rmilter";
description = ''
User to use when no root privileges are required.
'';
};
group = mkOption {
type = types.string;
default = "rmilter";
description = ''
Group to use when no root privileges are required.
'';
};
bindUnixSockets = mkOption {
type = types.listOf types.str;
default = ["/run/rmilter.sock"];
description = ''
Unix domain sockets to listen for MTA requests.
'';
example = ''
[ "/run/rmilter.sock"]
'';
};
bindInetSockets = mkOption {
type = types.listOf types.str;
default = [];
description = ''
Inet addresses to listen (in format accepted by systemd.socket)
'';
example = ''
["127.0.0.1:11990"]
'';
};
socketActivation = mkOption {
type = types.bool;
default = true;
description = ''
Enable systemd socket activation for rmilter.
(disabling socket activation not recommended
when unix socket used, and follow to wrong
permissions on unix domain socket.)
'';
};
rspamd = {
enable = mkOption {
default = rspamdCfg.enable;
description = "Whether to use rspamd to filter mails";
};
servers = mkOption {
type = types.listOf types.str;
default = ["r:/run/rspamd.sock"];
description = ''
Spamd socket definitions.
Is server name is prefixed with r: it is rspamd server.
'';
};
whitelist = mkOption {
type = types.listOf types.str;
default = [ ];
description = "list of ips or nets that should be not checked with spamd";
};
rejectMessage = mkOption {
type = types.str;
default = "Spam message rejected; If this is not spam contact abuse";
description = "reject message for spam";
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = "Custom snippet to append to end of `spamd' section";
};
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = "Custom snippet to append to rmilter config";
};
postfix = {
enable = mkOption {
type = types.bool;
default = false;
description = "Add rmilter to postfix main.conf";
};
configFragment = mkOption {
type = types.str;
description = "Addon to postfix configuration";
default = ''
smtpd_milters = ${head allSockets}
# or for TCP socket
# # smtpd_milters = inet:localhost:9900
milter_protocol = 6
milter_mail_macros = i {mail_addr} {client_addr} {client_name} {auth_authen}
# skip mail without checks if milter will die
milter_default_action = accept
'';
};
};
};
};
###### implementation
config = mkIf cfg.enable {
users.extraUsers = singleton {
name = cfg.user;
description = "rspamd daemon";
uid = config.ids.uids.rmilter;
group = cfg.group;
};
users.extraGroups = singleton {
name = cfg.group;
gid = config.ids.gids.rmilter;
};
systemd.services.rmilter = {
description = "Rmilter Service";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
serviceConfig = {
ExecStart = "${pkgs.rmilter}/bin/rmilter ${optionalString cfg.debug "-d"} -n -c ${rmilterConfigFile}";
ExecReload = "/bin/kill -USR1 $MAINPID";
User = cfg.user;
Group = cfg.group;
PermissionsStartOnly = true;
Restart = "always";
RuntimeDirectory = "rmilter";
RuntimeDirectoryPermissions="0755";
};
};
systemd.sockets.rmilter = mkIf cfg.socketActivation {
description = "Rmilter service socket";
wantedBy = [ "sockets.target" ];
socketConfig = {
ListenStream = cfg.bindUnixSockets ++ cfg.bindInetSockets;
SocketUser = cfg.user;
SocketGroup = cfg.group;
SocketMode = "0660";
};
};
services.postfix.extraConfig = optionalString cfg.postfix.enable cfg.postfix.configFragment;
users.users.postfix.extraGroups = [ cfg.group ];
};
}