nixpkgs/nixos/modules/services/mail/dspam.nix
pennae 2e751c0772 treewide: automatically md-convert option descriptions
the conversion procedure is simple:

 - find all things that look like options, ie calls to either `mkOption`
   or `lib.mkOption` that take an attrset. remember the attrset as the
   option
 - for all options, find a `description` attribute who's value is not a
   call to `mdDoc` or `lib.mdDoc`
 - textually convert the entire value of the attribute to MD with a few
   simple regexes (the set from mdize-module.sh)
 - if the change produced a change in the manual output, discard
 - if the change kept the manual unchanged, add some text to the
   description to make sure we've actually found an option. if the
   manual changes this time, keep the converted description

this procedure converts 80% of nixos options to markdown. around 2000
options remain to be inspected, but most of those fail the "does not
change the manual output check": currently the MD conversion process
does not faithfully convert docbook tags like <code> and <package>, so
any option using such tags will not be converted at all.
2022-07-30 15:16:34 +02:00

150 lines
3.7 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.dspam;
dspam = pkgs.dspam;
defaultSock = "/run/dspam/dspam.sock";
cfgfile = pkgs.writeText "dspam.conf" ''
Home /var/lib/dspam
StorageDriver ${dspam}/lib/dspam/lib${cfg.storageDriver}_drv.so
Trust root
Trust ${cfg.user}
SystemLog on
UserLog on
${optionalString (cfg.domainSocket != null) ''
ServerDomainSocketPath "${cfg.domainSocket}"
ClientHost "${cfg.domainSocket}"
''}
${cfg.extraConfig}
'';
in {
###### interface
options = {
services.dspam = {
enable = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc "Whether to enable the dspam spam filter.";
};
user = mkOption {
type = types.str;
default = "dspam";
description = lib.mdDoc "User for the dspam daemon.";
};
group = mkOption {
type = types.str;
default = "dspam";
description = lib.mdDoc "Group for the dspam daemon.";
};
storageDriver = mkOption {
type = types.str;
default = "hash";
description = lib.mdDoc "Storage driver backend to use for dspam.";
};
domainSocket = mkOption {
type = types.nullOr types.path;
default = defaultSock;
description = lib.mdDoc "Path to local domain socket which is used for communication with the daemon. Set to null to disable UNIX socket.";
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = lib.mdDoc "Additional dspam configuration.";
};
maintenanceInterval = mkOption {
type = types.nullOr types.str;
default = null;
description = lib.mdDoc "If set, maintenance script will be run at specified (in systemd.timer format) interval";
};
};
};
###### implementation
config = mkIf cfg.enable (mkMerge [
{
users.users = optionalAttrs (cfg.user == "dspam") {
dspam = {
group = cfg.group;
uid = config.ids.uids.dspam;
};
};
users.groups = optionalAttrs (cfg.group == "dspam") {
dspam.gid = config.ids.gids.dspam;
};
environment.systemPackages = [ dspam ];
environment.etc."dspam/dspam.conf".source = cfgfile;
systemd.services.dspam = {
description = "dspam spam filtering daemon";
wantedBy = [ "multi-user.target" ];
after = [ "postgresql.service" ];
restartTriggers = [ cfgfile ];
serviceConfig = {
ExecStart = "${dspam}/bin/dspam --daemon --nofork";
User = cfg.user;
Group = cfg.group;
RuntimeDirectory = optional (cfg.domainSocket == defaultSock) "dspam";
RuntimeDirectoryMode = optional (cfg.domainSocket == defaultSock) "0750";
StateDirectory = "dspam";
StateDirectoryMode = "0750";
LogsDirectory = "dspam";
LogsDirectoryMode = "0750";
# DSPAM segfaults on just about every error
Restart = "on-abort";
RestartSec = "1s";
};
};
}
(mkIf (cfg.maintenanceInterval != null) {
systemd.timers.dspam-maintenance = {
description = "Timer for dspam maintenance script";
wantedBy = [ "timers.target" ];
timerConfig = {
OnCalendar = cfg.maintenanceInterval;
Unit = "dspam-maintenance.service";
};
};
systemd.services.dspam-maintenance = {
description = "dspam maintenance script";
restartTriggers = [ cfgfile ];
serviceConfig = {
ExecStart = "${dspam}/bin/dspam_maintenance --verbose";
Type = "oneshot";
User = cfg.user;
Group = cfg.group;
};
};
})
]);
}