nixpkgs/nixos/modules/services/networking/syncthing.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.syncthing;
defaultUser = "syncthing";
in {
###### interface
options = {
services.syncthing = {
enable = mkEnableOption ''
Syncthing - the self-hosted open-source alternative
to Dropbox and Bittorrent Sync. Initial interface will be
available on http://127.0.0.1:8384/.
'';
systemService = mkOption {
type = types.bool;
default = true;
description = "Auto launch Syncthing as a system service.";
};
user = mkOption {
type = types.string;
default = defaultUser;
description = ''
Syncthing will be run under this user (user will be created if it doesn't exist.
This can be your user name).
'';
};
group = mkOption {
type = types.string;
default = "nogroup";
description = ''
Syncthing will be run under this group (group will not be created if it doesn't exist.
This can be your user name).
'';
};
all_proxy = mkOption {
type = types.nullOr types.string;
default = null;
example = "socks5://address.com:1234";
description = ''
Overwrites all_proxy environment variable for the syncthing process to
the given value. This is normaly used to let relay client connect
through SOCKS5 proxy server.
'';
};
dataDir = mkOption {
type = types.path;
default = "/var/lib/syncthing";
description = ''
Path where the settings and keys will exist.
'';
};
openDefaultPorts = mkOption {
type = types.bool;
default = false;
example = literalExample "true";
description = ''
Open the default ports in the firewall:
- TCP 22000 for transfers
- UDP 21027 for discovery
If multiple users are running syncthing on this machine, you will need to manually open a set of ports for each instance and leave this disabled.
Alternatively, if are running only a single instance on this machine using the default ports, enable this.
'';
};
package = mkOption {
type = types.package;
default = pkgs.syncthing;
defaultText = "pkgs.syncthing";
example = literalExample "pkgs.syncthing";
description = ''
Syncthing package to use.
'';
};
};
};
imports = [
(mkRemovedOptionModule ["services" "syncthing" "useInotify"] ''
This option was removed because syncthing now has the inotify functionality included under the name "fswatcher".
It can be enabled on a per-folder basis through the webinterface.
'')
];
###### implementation
config = mkIf cfg.enable {
networking.firewall = mkIf cfg.openDefaultPorts {
allowedTCPPorts = [ 22000 ];
allowedUDPPorts = [ 21027 ];
};
systemd.packages = [ pkgs.syncthing ];
users = mkIf (cfg.user == defaultUser) {
extraUsers."${defaultUser}" =
{ group = cfg.group;
home = cfg.dataDir;
createHome = true;
uid = config.ids.uids.syncthing;
description = "Syncthing daemon user";
};
extraGroups."${defaultUser}".gid =
config.ids.gids.syncthing;
};
systemd.services = {
syncthing = mkIf cfg.systemService {
description = "Syncthing service";
after = [ "network.target" ];
environment = {
STNORESTART = "yes";
STNOUPGRADE = "yes";
inherit (cfg) all_proxy;
} // config.networking.proxy.envVars;
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Restart = "on-failure";
SuccessExitStatus = "2 3 4";
RestartForceExitStatus="3 4";
User = cfg.user;
Group = cfg.group;
PermissionsStartOnly = true;
ExecStart = "${cfg.package}/bin/syncthing -no-browser -home=${cfg.dataDir}";
};
};
syncthing-resume = {
wantedBy = [ "suspend.target" ];
};
};
};
}