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|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.xinetd;
configFile = pkgs.writeText "xinetd.conf"
''
defaults
{
log_type = SYSLOG daemon info
log_on_failure = HOST
log_on_success = PID HOST DURATION EXIT
${cfg.extraDefaults}
}
${concatMapStrings makeService cfg.services}
'';
makeService = srv:
''
service ${srv.name}
{
protocol = ${srv.protocol}
${optionalString srv.unlisted "type = UNLISTED"}
${optionalString (srv.flags != "") "flags = ${srv.flags}"}
socket_type = ${if srv.protocol == "udp" then "dgram" else "stream"}
${if srv.port != 0 then "port = ${toString srv.port}" else ""}
wait = ${if srv.protocol == "udp" then "yes" else "no"}
user = ${srv.user}
server = ${srv.server}
${optionalString (srv.serverArgs != "") "server_args = ${srv.serverArgs}"}
${srv.extraConfig}
}
'';
in
{
###### interface
options = {
services.xinetd.enable = mkEnableOption "the xinetd super-server daemon";
services.xinetd.extraDefaults = mkOption {
default = "";
type = types.lines;
description = ''
Additional configuration lines added to the default section of xinetd's configuration.
'';
};
services.xinetd.services = mkOption {
default = [];
description = ''
A list of services provided by xinetd.
'';
type = with types; listOf (submodule ({
options = {
name = mkOption {
type = types.str;
example = "login";
description = "Name of the service.";
};
protocol = mkOption {
type = types.str;
default = "tcp";
description =
"Protocol of the service. Usually <literal>tcp</literal> or <literal>udp</literal>.";
};
port = mkOption {
type = types.int;
default = 0;
example = 123;
description = "Port number of the service.";
};
user = mkOption {
type = types.str;
default = "nobody";
description = "User account for the service";
};
server = mkOption {
type = types.str;
example = "/foo/bin/ftpd";
description = "Path of the program that implements the service.";
};
serverArgs = mkOption {
type = types.separatedString " ";
default = "";
description = "Command-line arguments for the server program.";
};
flags = mkOption {
type = types.str;
default = "";
description = "";
};
unlisted = mkOption {
type = types.bool;
default = false;
description = ''
Whether this server is listed in
<filename>/etc/services</filename>. If so, the port
number can be omitted.
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = "Extra configuration-lines added to the section of the service.";
};
};
}));
};
};
###### implementation
config = mkIf cfg.enable {
systemd.services.xinetd = {
description = "xinetd server";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
path = [ pkgs.xinetd ];
script = "exec xinetd -syslog daemon -dontfork -stayalive -f ${configFile}";
};
};
}
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