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{ config, lib, ... }:
with lib;
let
cfg = config.vuizvui.services.postfix;
mkRestriction = name: specificDescription: {
option.${name} = mkOption {
default = null;
type = types.nullOr (types.listOf types.str);
description = ''
A list of restrictions to apply or <option>null</option> to use the
built-in default value from Postfix.
${specificDescription}
'';
};
config = let
restrictions = cfg.restrictions.${name};
in mkIf (restrictions != null) {
services.postfix.extraConfig = ''
smtpd_${name}_restrictions = ${concatStringsSep ", " restrictions}
'';
};
};
restrictions = mapAttrsToList mkRestriction {
client = ''
SMTP server access restrictions in the context of a client SMTP connection
request.
'';
data = ''
Access restrictions that the Postfix SMTP server applies in the context of
the SMTP DATA command.
'';
end_of_data = ''
Access restrictions that the Postfix SMTP server applies in the context of
the SMTP END-OF-DATA command.
'';
etrn = ''
SMTP server access restrictions in the context of a client ETRN request.
'';
helo = ''
Restrictions that the Postfix SMTP server applies in the context of the
SMTP HELO command.
'';
recipient = ''
Access restrictions that the Postfix SMTP server applies in the context of
the RCPT TO command.
'';
sender = ''
Restrictions that the Postfix SMTP server applies in the context of the
MAIL FROM command.
'';
};
in {
options.vuizvui.services.postfix = {
enable = mkEnableOption "Vuizvui Postfix";
restrictions = fold mergeAttrs {} (catAttrs "option" restrictions);
};
config = mkIf cfg.enable (mkMerge (catAttrs "config" restrictions));
}
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