325 lines
9.4 KiB
Nix
325 lines
9.4 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.btsync;
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bittorrentSync = cfg.package;
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listenAddr = cfg.httpListenAddr + ":" + (toString cfg.httpListenPort);
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optionalEmptyStr = b: v: optionalString (b != "") v;
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webUIConfig = optionalString cfg.enableWebUI
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''
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"webui":
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{
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${optionalEmptyStr cfg.httpLogin "\"login\": \"${cfg.httpLogin}\","}
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${optionalEmptyStr cfg.httpPass "\"password\": \"${cfg.httpPass}\","}
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${optionalEmptyStr cfg.apiKey "\"api_key\": \"${cfg.apiKey}\","}
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${optionalEmptyStr cfg.directoryRoot "\"directory_root\": \"${cfg.directoryRoot}\","}
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"listen": "${listenAddr}"
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}
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'';
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knownHosts = e:
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optionalString (e ? "knownHosts")
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(concatStringsSep "," (map (v: "\"${v}\"") e."knownHosts"));
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sharedFoldersRecord =
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concatStringsSep "," (map (entry:
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let helper = attr: v:
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if (entry ? attr) then boolToString entry.attr else boolToString v;
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in
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''
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{
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"secret": "${entry.secret}",
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"dir": "${entry.directory}",
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"use_relay_server": ${helper "useRelayServer" true},
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"use_tracker": ${helper "useTracker" true},
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"use_dht": ${helper "useDHT" false},
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"search_lan": ${helper "searchLAN" true},
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"use_sync_trash": ${helper "useSyncTrash" true},
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"known_hosts": [${knownHosts entry}]
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}
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'') cfg.sharedFolders);
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sharedFoldersConfig = optionalString (cfg.sharedFolders != [])
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''
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"shared_folders":
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[
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${sharedFoldersRecord}
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]
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'';
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configFile = pkgs.writeText "btsync.config"
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''
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{
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"device_name": "${cfg.deviceName}",
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"storage_path": "${cfg.storagePath}",
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"listening_port": ${toString cfg.listeningPort},
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"use_gui": false,
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"check_for_updates": ${boolToString cfg.checkForUpdates},
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"use_upnp": ${boolToString cfg.useUpnp},
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"download_limit": ${toString cfg.downloadLimit},
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"upload_limit": ${toString cfg.uploadLimit},
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"lan_encrypt_data": ${boolToString cfg.encryptLAN},
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${webUIConfig}
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${sharedFoldersConfig}
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}
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'';
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in
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{
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options = {
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services.btsync = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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If enabled, start the Bittorrent Sync daemon. Once enabled, you can
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interact with the service through the Web UI, or configure it in your
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NixOS configuration. Enabling the <literal>btsync</literal> service
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also installs a systemd user unit which can be used to start
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user-specific copies of the daemon. Once installed, you can use
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<literal>systemctl --user start btsync</literal> as your user to start
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the daemon using the configuration file located at
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<literal>$HOME/.config/btsync.conf</literal>.
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'';
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};
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deviceName = mkOption {
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type = types.str;
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example = "Voltron";
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description = ''
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Name of the Bittorrent Sync device.
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'';
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};
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listeningPort = mkOption {
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type = types.int;
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default = 0;
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example = 44444;
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description = ''
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Listening port. Defaults to 0 which randomizes the port.
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'';
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};
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checkForUpdates = mkOption {
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type = types.bool;
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default = true;
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description = ''
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Determines whether to check for updates and alert the user
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about them in the UI.
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'';
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};
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useUpnp = mkOption {
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type = types.bool;
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default = true;
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description = ''
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Use Universal Plug-n-Play (UPnP)
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'';
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};
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downloadLimit = mkOption {
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type = types.int;
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default = 0;
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example = 1024;
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description = ''
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Download speed limit. 0 is unlimited (default).
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'';
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};
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uploadLimit = mkOption {
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type = types.int;
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default = 0;
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example = 1024;
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description = ''
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Upload speed limit. 0 is unlimited (default).
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'';
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};
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httpListenAddr = mkOption {
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type = types.str;
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default = "0.0.0.0";
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example = "1.2.3.4";
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description = ''
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HTTP address to bind to.
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'';
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};
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httpListenPort = mkOption {
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type = types.int;
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default = 9000;
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description = ''
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HTTP port to bind on.
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'';
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};
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httpLogin = mkOption {
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type = types.str;
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example = "allyourbase";
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default = "";
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description = ''
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HTTP web login username.
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'';
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};
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httpPass = mkOption {
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type = types.str;
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example = "arebelongtous";
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default = "";
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description = ''
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HTTP web login password.
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'';
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};
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encryptLAN = mkOption {
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type = types.bool;
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default = true;
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description = "Encrypt LAN data.";
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};
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enableWebUI = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Enable Web UI for administration. Bound to the specified
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<literal>httpListenAddress</literal> and
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<literal>httpListenPort</literal>.
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'';
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};
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package = mkOption {
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type = types.package;
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example = literalExample "pkgs.bittorrentSync20";
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description = ''
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Branch of bittorrent sync to use.
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'';
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};
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storagePath = mkOption {
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type = types.path;
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default = "/var/lib/btsync/";
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description = ''
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Where BitTorrent Sync will store it's database files (containing
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things like username info and licenses). Generally, you should not
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need to ever change this.
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'';
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};
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apiKey = mkOption {
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type = types.str;
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default = "";
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description = "API key, which enables the developer API.";
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};
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directoryRoot = mkOption {
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type = types.str;
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default = "";
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example = "/media";
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description = "Default directory to add folders in the web UI.";
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};
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sharedFolders = mkOption {
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default = [];
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example =
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[ { secret = "AHMYFPCQAHBM7LQPFXQ7WV6Y42IGUXJ5Y";
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directory = "/home/user/sync_test";
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useRelayServer = true;
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useTracker = true;
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useDHT = false;
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searchLAN = true;
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useSyncTrash = true;
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knownHosts =
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[ "192.168.1.2:4444"
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"192.168.1.3:4444"
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];
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}
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];
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description = ''
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Shared folder list. If enabled, web UI must be
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disabled. Secrets can be generated using <literal>btsync
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--generate-secret</literal>. Note that this secret will be
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put inside the Nix store, so it is realistically not very
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secret.
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If you would like to be able to modify the contents of this
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directories, it is recommended that you make your user a
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member of the <literal>btsync</literal> group.
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Directories in this list should be in the
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<literal>btsync</literal> group, and that group must have
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write access to the directory. It is also recommended that
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<literal>chmod g+s</literal> is applied to the directory
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so that any sub directories created will also belong to
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the <literal>btsync</literal> group. Also,
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<literal>setfacl -d -m group:btsync:rwx</literal> and
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<literal>setfacl -m group:btsync:rwx</literal> should also
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be applied so that the sub directories are writable by
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the group.
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'';
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};
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};
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};
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config = mkIf cfg.enable {
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assertions =
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[ { assertion = cfg.deviceName != "";
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message = "Device name cannot be empty.";
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}
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{ assertion = cfg.enableWebUI -> cfg.sharedFolders == [];
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message = "If using shared folders, the web UI cannot be enabled.";
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}
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{ assertion = cfg.apiKey != "" -> cfg.enableWebUI;
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message = "If you're using an API key, you must enable the web server.";
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}
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];
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services.btsync.package = mkOptionDefault pkgs.bittorrentSync14;
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users.users.btsync = {
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description = "Bittorrent Sync Service user";
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home = cfg.storagePath;
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createHome = true;
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uid = config.ids.uids.btsync;
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group = "btsync";
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};
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users.groups = [
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{ name = "btsync";
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}];
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systemd.services.btsync = with pkgs; {
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description = "Bittorrent Sync Service";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" "local-fs.target" ];
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serviceConfig = {
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Restart = "on-abort";
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UMask = "0002";
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User = "btsync";
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ExecStart =
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"${bittorrentSync}/bin/btsync --nodaemon --config ${configFile}";
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};
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};
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systemd.user.services.btsync = with pkgs; {
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description = "Bittorrent Sync user service";
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after = [ "network.target" "local-fs.target" ];
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serviceConfig = {
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Restart = "on-abort";
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ExecStart =
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"${bittorrentSync}/bin/btsync --nodaemon --config %h/.config/btsync.conf";
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};
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};
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environment.systemPackages = [ cfg.package ];
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};
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}
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