nixpkgs/nixos/modules/services/mail/rmilter.nix
2016-01-16 15:12:30 +02:00

190 lines
4.6 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
rspamdCfg = config.services.rspamd;
cfg = config.services.rmilter;
rmilterConf = ''
pidfile = /run/rmilter/rmilter.pid;
bind_socket = ${cfg.bindSocket};
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.
'';
};
bindSocket = mkOption {
type = types.string;
default = "unix:/run/rmilter/rmilter.sock";
description = "Socket to listed for MTA requests";
example = ''
"unix:/run/rmilter/rmilter.sock" or
"inet:11990@127.0.0.1"
'';
};
rspamd = {
enable = mkOption {
default = rspamdCfg.enable;
description = "Whether to use rspamd to filter mails";
};
servers = mkOption {
type = types.listOf types.str;
default = ["r:0.0.0.0:11333"];
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 = ${cfg.bindSocket}
# or for TCP socket
# # smtpd_milters = inet:localhost:9900
milter_protocol = 6
milter_mail_macros = i {mail_addr} {client_addr} {client_name} {auth_authen}
# skip mail without checks if milter will die
milter_default_action = accept
'';
};
};
};
};
###### implementation
config = mkIf cfg.enable {
users.extraUsers = singleton {
name = cfg.user;
description = "rspamd daemon";
uid = config.ids.uids.rmilter;
group = cfg.group;
};
users.extraGroups = singleton {
name = cfg.group;
gid = config.ids.gids.rmilter;
};
systemd.services.rmilter = {
description = "Rmilter Service";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
serviceConfig = {
ExecStart = "${pkgs.rmilter}/bin/rmilter ${optionalString cfg.debug "-d"} -n -c ${rmilterConfigFile}";
User = cfg.user;
Group = cfg.group;
PermissionsStartOnly = true;
Restart = "always";
};
preStart = ''
${pkgs.coreutils}/bin/mkdir -p /run/rmilter
${pkgs.coreutils}/bin/chown ${cfg.user}:${cfg.group} /run/rmilter
'';
};
services.postfix.extraConfig = optionalString cfg.postfix.enable cfg.postfix.configFragment;
};
}