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add module.nix and checked its functionality

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Signed-off-by: Florian Brandes <florian.brandes@posteo.de>
This commit is contained in:
Florian Brandes
2024-07-12 16:11:31 +02:00
parent 84bf6e4712
commit 0494812be5
1 changed files with 41 additions and 63 deletions
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104
module.nix
View File

@@ -5,29 +5,31 @@
}:
with lib;
let
cfg = config.smtprd-ng;
cfg = config.services.smtprd-ng;
smtprd-ng = pkgs.callPackage ./. { };
emails = submodule {
options = {
email = mkOption {
type = types.str;
description = ''
Email to relay locally received emails to.
'';
};
certificate = mkOption {
type = types.nullOr types.path;
description = ''
Path to the public S/MIME certificate for this receiver. Emails will be encrypted with this certificate.
'';
};
cfgText = generators.toINI { } {
server = {
hostname = cfg.server.hostname;
port = cfg.server.port;
};
client = {
hostname = cfg.client.hostname;
port = cfg.client.port;
username = cfg.client.username;
password_file = cfg.client.password_file;
sender = cfg.client.sender;
use_tls = cfg.client.use_tls;
start_tls = cfg.client.start_tls;
smime_cert = cfg.client.smime_cert;
smime_cert_private = cfg.client.smime_cert_private;
};
emails = cfg.emails;
};
confFile = pkgs.writeText "config.ini" cfgText;
in
{
options.smtprd-ng = {
options.services.smtprd-ng = {
enable = mkEnableOption "smtprd-ng";
package = mkOption {
@@ -108,6 +110,7 @@ in
smime_cert = mkOption {
type = types.nullOr types.path;
default = null;
example = "''\${./mycert.pem}";
description = mdDoc ''
The path to the S/MIME certificate used to sign messages.
If empty, will neither encrypt, nor sign relayed messages.
@@ -123,22 +126,16 @@ in
};
};
emails = mkOption {
type = nullOr (listOf emails);
type = types.nullOr (types.attrsOf (types.nullOr types.str));
default = null;
description = ''
A required list of recipients. A certificate is optional, but required if
A required set of recipients. A certificate is optional, but required if
messages should be signed and encrypted.
'';
example = [
{
email = "monitoring.foo@example.com";
certificate = "`/path/to/certificate`";
}
{
email = "unencrypted@example.com";
certificate = "`null`";
}
];
example = {
"monitoring.foo@example.com" = "`/path/to/certificate`";
"unencrypted@example.com" = "`null`";
};
};
};
@@ -146,11 +143,13 @@ in
assertions = [
{
assertion = cfg.client.use_tls == true && cfg.client.start_tls == true;
assertion = !cfg.client.use_tls || !cfg.client.start_tls;
message = "Use either TLS or STARTTLS, not both.";
}
{
assertion = cfg.client.smime_cert != null && cfg.client.smime_cert_private == null;
assertion =
cfg.client.smime_cert == null
|| (cfg.client.smime_cert != null && cfg.client.smime_cert_private != null);
message = "If a S/MIME certificate should be used to sign messages, the private key to this certificate must be supplied.";
}
{
@@ -159,38 +158,17 @@ in
}
];
configFile = {
text = generators.toINI { } {
server = {
hostname = cfg.server.hostname;
port = cfg.server.port;
};
client = {
hostname = cfg.client.hostname;
port = cfg.client.port;
username = cfg.client.username;
password_file = cfg.client.password_file;
sender = cfg.client.sender;
use_tls = cfg.client.use_tls;
start_tls = cfg.client.start_tls;
smime_cert = cfg.client.smime_cert;
smime_cert_private = cfg.client.smime_cert_private;
};
emails = cfg.emails;
};
systemd.services = {
smtprd-ng = {
description = "Run local SMTP relay";
wantedBy = [ "multi-user.target" ];
requires = [ "network.target" ];
serviceConfig = {
DynamicUser = true;
User = "smtprd-ng";
Group = "smtprd-ng";
Restart = "on-failure";
ExecStart = "${cfg.package}/bin/smtprd-ng --config ${configFile}";
};
systemd.services = {
smtprd-ng = {
description = "Run local SMTP relay";
wantedBy = [ "multi-user.target" ];
requires = [ "network.target" ];
serviceConfig = {
DynamicUser = true;
User = "smtprd-ng";
Group = "smtprd-ng";
Restart = "on-failure";
ExecStart = "${cfg.package}/bin/smtprd-ng --config ${confFile}";
};
};
};