From 11d29e09ce7f8bada434090a69bac5dc7a6a9683 Mon Sep 17 00:00:00 2001
From: Yves Fischer <yvesf+git@xapek.org>
Date: Thu, 18 Feb 2021 23:21:23 +0100
Subject: config

---
 module.nix | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/module.nix b/module.nix
index 85e033d..23f62e4 100644
--- a/module.nix
+++ b/module.nix
@@ -6,14 +6,14 @@ in {
   options.services.smtp-forward = {
     enable = lib.mkEnableOption "the smtp-forward service";
     mapping = lib.mkOption {
-      type = lib.types.str;
+      type = lib.types.strMatching "([^:]+:[^:]+@[^,]+)(,[^:]+:[^:]+@[^,]+)*";
       default = "prefix1:addres@host,prefix2:address@host";
       description = "-m maps prefixes to email addresses";
     };
     listen = lib.mkOption {
       type = lib.types.str;
       default = ":25";
-      description = "Adress to listen on";
+      description = "-l sets the address to listen on";
     };
     hostname = lib.mkOption {
       type = lib.types.str;
@@ -21,14 +21,14 @@ in {
       description = "-h sets the server hostname";
     };
     key = lib.mkOption {
-      type = lib.types.str;
-      default = "setme";
-      description = "-k sets the TLS key";
+      type = lib.types.path;
+      default = null;
+      description = "-k /path/to/file sets the TLS key file";
     };
     cert = lib.mkOption {
-      type = lib.types.str;
-      default = "setme";
-      description = "-c sets the TLS key";
+      type = lib.types.path;
+      default = null;
+      description = "-c /path/to/file" sets the TLS certificate file";
     };
   };
   config = lib.mkIf config.services.smtp-forward.enable {
@@ -37,7 +37,9 @@ in {
       path = [ package ];
       wantedBy = [ "default.target" ];
       script = ''
-        ${package}/bin/smtp-forward -l ${cfg.listen} -m ${cfg.mapping} -h ${cfg.hostname} -k ${cfg.key} -c ${cfg.cert}
+        ${package}/bin/smtp-forward -l ${cfg.listen} -m ${cfg.mapping} -h ${cfg.hostname} \
+         		${lib.optionalString (cfg.key != null) "-k ${cfg.key}"} \
+         		${lib.optionalString (cfg.cert != null) "-c ${cfg.cert}"}
       '';
       serviceConfig = {
         User = "smtp-forward";
-- 
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