{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.murmur;
forking = cfg.logFile != null;
configFile = pkgs.writeText "murmurd.ini" ''
database=/var/lib/murmur/murmur.sqlite
dbDriver=QSQLITE
autobanAttempts=${toString cfg.autobanAttempts}
autobanTimeframe=${toString cfg.autobanTimeframe}
autobanTime=${toString cfg.autobanTime}
logfile=${optionalString (cfg.logFile != null) cfg.logFile}
${optionalString forking "pidfile=/run/murmur/murmurd.pid"}
welcometext="${cfg.welcometext}"
port=${toString cfg.port}
${if cfg.hostName == "" then "" else "host="+cfg.hostName}
${if cfg.password == "" then "" else "serverpassword="+cfg.password}
bandwidth=${toString cfg.bandwidth}
users=${toString cfg.users}
textmessagelength=${toString cfg.textMsgLength}
imagemessagelength=${toString cfg.imgMsgLength}
allowhtml=${boolToString cfg.allowHtml}
logdays=${toString cfg.logDays}
bonjour=${boolToString cfg.bonjour}
sendversion=${boolToString cfg.sendVersion}
${if cfg.registerName == "" then "" else "registerName="+cfg.registerName}
${if cfg.registerPassword == "" then "" else "registerPassword="+cfg.registerPassword}
${if cfg.registerUrl == "" then "" else "registerUrl="+cfg.registerUrl}
${if cfg.registerHostname == "" then "" else "registerHostname="+cfg.registerHostname}
certrequired=${boolToString cfg.clientCertRequired}
${if cfg.sslCert == "" then "" else "sslCert="+cfg.sslCert}
${if cfg.sslKey == "" then "" else "sslKey="+cfg.sslKey}
${if cfg.sslCa == "" then "" else "sslCA="+cfg.sslCa}
${cfg.extraConfig}
'';
in
{
imports = [
(mkRenamedOptionModule [ "services" "murmur" "welcome" ] [ "services" "murmur" "welcometext" ])
(mkRemovedOptionModule [ "services" "murmur" "pidfile" ] "Hardcoded to /run/murmur/murmurd.pid now")
];
options = {
services.murmur = {
enable = mkOption {
type = types.bool;
default = false;
description = "If enabled, start the Murmur Mumble server.";
};
autobanAttempts = mkOption {
type = types.int;
default = 10;
description = ''
Number of attempts a client is allowed to make in
<literal>autobanTimeframe</literal> seconds, before being
banned for <literal>autobanTime</literal>.
'';
};
autobanTimeframe = mkOption {
type = types.int;
default = 120;
description = ''
Timeframe in which a client can connect without being banned
for repeated attempts (in seconds).
'';
};
autobanTime = mkOption {
type = types.int;
default = 300;
description = "The amount of time an IP ban lasts (in seconds).";
};
logFile = mkOption {
type = types.nullOr types.path;
default = null;
example = "/var/log/murmur/murmurd.log";
description = "Path to the log file for Murmur daemon. Empty means log to journald.";
};
welcometext = mkOption {
type = types.str;
default = "";
description = "Welcome message for connected clients.";
};
port = mkOption {
type = types.int;
default = 64738;
description = "Ports to bind to (UDP and TCP).";
};
hostName = mkOption {
type = types.str;
default = "";
description = "Host to bind to. Defaults binding on all addresses.";
};
password = mkOption {
type = types.str;
default = "";
description = "Required password to join server, if specified.";
};
bandwidth = mkOption {
type = types.int;
default = 72000;
description = ''
Maximum bandwidth (in bits per second) that clients may send
speech at.
'';
};
users = mkOption {
type = types.int;
default = 100;
description = "Maximum number of concurrent clients allowed.";
};
textMsgLength = mkOption {
type = types.int;
default = 5000;
description = "Max length of text messages. Set 0 for no limit.";
};
imgMsgLength = mkOption {
type = types.int;
default = 131072;
description = "Max length of image messages. Set 0 for no limit.";
};
allowHtml = mkOption {
type = types.bool;
default = true;
description = ''
Allow HTML in client messages, comments, and channel
descriptions.
'';
};
logDays = mkOption {
type = types.int;
default = 31;
description = ''
How long to store RPC logs for in the database. Set 0 to
keep logs forever, or -1 to disable DB logging.
'';
};
bonjour = mkOption {
type = types.bool;
default = false;
description = ''
Enable Bonjour auto-discovery, which allows clients over
your LAN to automatically discover Murmur servers.
'';
};
sendVersion = mkOption {
type = types.bool;
default = true;
description = "Send Murmur version in UDP response.";
};
registerName = mkOption {
type = types.str;
default = "";
description = ''
Public server registration name, and also the name of the
Root channel. Even if you don't publicly register your
server, you probably still want to set this.
'';
};
registerPassword = mkOption {
type = types.str;
default = "";
description = ''
Public server registry password, used authenticate your
server to the registry to prevent impersonation; required for
subsequent registry updates.
'';
};
registerUrl = mkOption {
type = types.str;
default = "";
description = "URL website for your server.";
};
registerHostname = mkOption {
type = types.str;
default = "";
description = ''
DNS hostname where your server can be reached. This is only
needed if you want your server to be accessed by its
hostname and not IP - but the name *must* resolve on the
internet properly.
'';
};
clientCertRequired = mkOption {
type = types.bool;
default = false;
description = "Require clients to authenticate via certificates.";
};
sslCert = mkOption {
type = types.str;
default = "";
description = "Path to your SSL certificate.";
};
sslKey = mkOption {
type = types.str;
default = "";
description = "Path to your SSL key.";
};
sslCa = mkOption {
type = types.str;
default = "";
description = "Path to your SSL CA certificate.";
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = "Extra configuration to put into murmur.ini.";
};
environmentFile = mkOption {
type = types.nullOr types.path;
default = null;
example = "/var/lib/murmur/murmurd.env";
description = ''
Environment file as defined in <citerefentry>
<refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum>
</citerefentry>.
Secrets may be passed to the service without adding them to the world-readable
Nix store, by specifying placeholder variables as the option value in Nix and
setting these variables accordingly in the environment file.
<programlisting>
# snippet of murmur-related config
services.murmur.password = "$MURMURD_PASSWORD";
</programlisting>
<programlisting>
# content of the environment file
MURMURD_PASSWORD=verysecretpassword
</programlisting>
Note that this file needs to be available on the host on which
<literal>murmur</literal> is running.
'';
};
};
};
config = mkIf cfg.enable {
users.users.murmur = {
description = "Murmur Service user";
home = "/var/lib/murmur";
createHome = true;
uid = config.ids.uids.murmur;
group = "murmur";
};
users.groups.murmur = {
gid = config.ids.gids.murmur;
};
systemd.services.murmur = {
description = "Murmur Chat Service";
wantedBy = [ "multi-user.target" ];
after = [ "network-online.target "];
preStart = ''
${pkgs.envsubst}/bin/envsubst \
-o /run/murmur/murmurd.ini \
-i ${configFile}
'';
serviceConfig = {
# murmurd doesn't fork when logging to the console.
Type = if forking then "forking" else "simple";
PIDFile = mkIf forking "/run/murmur/murmurd.pid";
EnvironmentFile = mkIf (cfg.environmentFile != null) cfg.environmentFile;
ExecStart = "${pkgs.murmur}/bin/murmurd -ini /run/murmur/murmurd.ini";
Restart = "always";
RuntimeDirectory = "murmur";
RuntimeDirectoryMode = "0700";
User = "murmur";
Group = "murmur";
};
};
};
}
