341 lines
10 KiB
Nix
341 lines
10 KiB
Nix
{ config, lib, pkgs, ... }:
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with import <stockholm/lib>;
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let
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cfg = config.krebs.rtorrent;
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webcfg = config.krebs.rtorrent.web;
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rucfg = config.krebs.rtorrent.rutorrent;
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nginx-user = config.services.nginx.user;
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nginx-group = config.services.nginx.group;
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fpm-socket = "/var/run/php5-fpm-rutorrent.sock";
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webdir = rucfg.webdir;
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systemd-logfile = cfg.workDir + "/rtorrent-systemd.log";
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# rutorrent requires a couple of binaries to be available to either the
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# rtorrent process or to phpfpm
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rutorrent-deps = with pkgs; [ curl php coreutils procps ffmpeg mediainfo ] ++
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(if (config.nixpkgs.config.allowUnfree or false) then
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trace "enabling unfree packages for rutorrent" [ unrar unzip ] else
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trace "not enabling unfree packages for rutorrent because allowUnfree is unset" []);
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configFile = pkgs.writeText "rtorrent-config" ''
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# THIS FILE IS AUTOGENERATED
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${optionalString (cfg.listenPort != null) ''
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port_range = ${toString cfg.listenPort}-${toString cfg.listenPort}
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port_random = no
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''}
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${optionalString (cfg.watchDir != null) ''
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schedule = watch_directory,5,5,load_start=${cfg.watchDir}/*.torrent
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''}
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directory = ${cfg.downloadDir}
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session = ${cfg.sessionDir}
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${optionalString (cfg.enableXMLRPC ) ''
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# prepare socket and set permissions. rtorrent user is part of group nginx
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# TODO: configure a shared torrent group
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execute_nothrow = rm,${cfg.xmlrpc-socket}
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scgi_local = ${cfg.xmlrpc-socket}
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schedule = scgi_permission,0,0,"execute.nothrow=chmod,\"ug+w,o=\",${cfg.xmlrpc-socket}"
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''}
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system.file_allocate.set = ${if cfg.preAllocate then "yes" else "no"}
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# Prepare systemd logging
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log.open_file = "rtorrent-systemd", ${systemd-logfile}
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log.add_output = "warn", "rtorrent-systemd"
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log.add_output = "notice", "rtorrent-systemd"
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log.add_output = "info", "rtorrent-systemd"
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# log.add_output = "debug", "rtorrent-systemd"
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${cfg.extraConfig}
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'';
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out = {
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options.krebs.rtorrent = api;
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# This only works because none of the attrsets returns the same key
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config = with lib; mkIf cfg.enable (lib.mkMerge [
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(lib.mkIf webcfg.enable rpcweb-imp)
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# only build rutorrent-imp if webcfg is enabled as well
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(lib.mkIf (webcfg.enable && rucfg.enable) rutorrent-imp)
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imp
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]);
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};
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api = {
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enable = mkEnableOption "rtorrent";
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web = {
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# configure NGINX to provide /RPC2 for listen address
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# authentication also applies to rtorrent.rutorrent
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enable = mkEnableOption "rtorrent nginx web RPC";
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port = mkOption {
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type = types.nullOr types.int;
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description =''
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nginx listen port for rtorrent
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'';
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default = 8006;
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};
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basicAuth = mkOption {
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type = types.attrsOf types.str ;
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description = ''
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basic authentication to be used. If unset, no authentication will be
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enabled.
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Refer to `services.nginx.virtualHosts.<name>.basicAuth`
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'';
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default = {};
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};
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};
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rutorrent = {
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enable = mkEnableOption "rutorrent"; # requires rtorrent.web.enable
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package = mkOption {
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type = types.package;
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description = ''
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path to rutorrent package. When using your own ruTorrent package,
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scgi_port and scgi_host will be patched on startup.
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'';
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default = pkgs.rutorrent;
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};
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webdir = mkOption {
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type = types.path;
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description = ''
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rutorrent php files will be written to this folder.
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when using nginx, be aware that the the folder should be readable by nginx.
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because rutorrent does not hold mutable data in a separate folder
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these files must be writable.
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'';
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default = "/var/lib/rutorrent";
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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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default = pkgs.rtorrent;
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};
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# TODO: enable xmlrpc with web.enable
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enableXMLRPC = mkEnableOption "rtorrent xmlrpc via socket";
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xmlrpc-socket = mkOption {
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type = types.str;
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description = ''
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enable xmlrpc at given socket. Required for web-interface.
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for documentation see:
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https://github.com/rakshasa/rtorrent/wiki/RPC-Setup-XMLRPC
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'';
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default = cfg.workDir + "/rtorrent.sock";
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};
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preAllocate = mkOption {
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type = types.bool;
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description = ''
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Pre-Allocate torrent files
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'';
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default = true;
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};
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downloadDir = mkOption {
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type = types.path;
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description = ''
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directory where torrents are stored
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'';
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default = cfg.workDir + "/downloads";
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};
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sessionDir = mkOption {
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type = types.path;
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description = ''
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directory where torrent progress is stored
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'';
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default = cfg.workDir + "/rtorrent-session";
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};
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watchDir = mkOption {
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type = with types; nullOr str;
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description = ''
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directory to watch for torrent files.
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If unset, no watch directory will be configured
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'';
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default = null;
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};
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listenPort = mkOption {
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type = with types; nullOr int;
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description =''
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listening port. if you want multiple ports, use extraConfig port_range
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'';
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};
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extraConfig = mkOption {
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type = types.string;
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description = ''
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config to be placed into ${cfg.workDir}/.rtorrent.rc
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see ${cfg.package}/share/doc/rtorrent/rtorrent.rc
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'';
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example = literalExample ''
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log.execute = ${cfg.workDir}/execute.log
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log.xmlrpc = ${cfg.workDir}/xmlrpc.log
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'';
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default = "";
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};
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user = mkOption {
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description = ''
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user which will run rtorrent. if kept default a new user will be created
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'';
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type = types.str;
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default = "rtorrent";
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};
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workDir = mkOption {
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description = ''
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working directory. rtorrent will search in HOME for `.rtorrent.rc`
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'';
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type = types.str;
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default = "/var/lib/rtorrent";
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};
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};
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imp = {
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systemd.services = {
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rtorrent-daemon = {
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description = "rtorrent headless";
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after = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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restartIfChanged = true;
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serviceConfig = {
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Type = "forking";
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ExecStartPre = pkgs.writeDash "prepare-folder" ''
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mkdir -p ${cfg.workDir} ${cfg.sessionDir}
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chmod 770 ${cfg.workDir} ${cfg.sessionDir}
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touch ${systemd-logfile}
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cp -f ${configFile} ${cfg.workDir}/.rtorrent.rc
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'';
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ExecStart = "${pkgs.tmux}/bin/tmux new-session -s rt -n rtorrent -d 'PATH=/bin:/usr/bin:${makeBinPath rutorrent-deps} ${cfg.package}/bin/rtorrent'";
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Restart = "always";
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RestartSec = "10";
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## you can simply sudo -u rtorrent tmux a if privateTmp is set to false
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## otherwise the tmux session is stored in some private folder in /tmp
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PrivateTmp = false;
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WorkingDirectory = cfg.workDir;
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User = "${cfg.user}";
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};
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};
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rtorrent-log = {
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after = [ "rtorrent-daemon.service" ];
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bindsTo = [ "rtorrent-daemon.service" ];
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wantedBy = [ "rtorrent-daemon.service" ];
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serviceConfig = {
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ExecStart = "${pkgs.coreutils}/bin/tail -f ${systemd-logfile}";
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User = "${cfg.user}";
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};
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};
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} // (optionalAttrs webcfg.enable {
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rutorrent-prepare = {
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after = [ "rtorrent-daemon.service" ];
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wantedBy = [ "rtorrent-daemon.service" ];
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serviceConfig = {
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Type = "oneshot";
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# we create the folder and set the permissions to allow nginx
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# TODO: update files if the version of rutorrent changed
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ExecStart = pkgs.writeDash "create-webconfig-dir" ''
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if [ ! -e ${webdir} ];then
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echo "creating webconfiguration directory for rutorrent: ${webdir}"
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cp -vr ${rucfg.package} ${webdir}
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echo "setting permissions for webdir to ${cfg.user}:${nginx-group}"
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chown -R ${cfg.user}:${nginx-group} ${webdir}
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chmod -R 770 ${webdir}
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else
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echo "not overwriting ${webdir}"
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fi
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echo "updating xmlrpc-socket with unix://${cfg.xmlrpc-socket}"
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sed -i -e 's#^\s*$scgi_port.*#$scgi_port = 0;#' \
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-e 's#^\s*$scgi_host.*#$scgi_host = "unix://${cfg.xmlrpc-socket}";#' \
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"${webdir}/conf/config.php"
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'';
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};
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};
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})
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// (optionalAttrs rucfg.enable { });
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users = lib.mkIf (cfg.user == "rtorrent") {
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users.rtorrent = {
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uid = genid "rtorrent";
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home = cfg.workDir;
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group = nginx-group; # required for rutorrent to work
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shell = "/bin/sh"; #required for tmux
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isSystemUser = true;
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createHome = true;
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};
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groups.rtorrent.gid = genid "rtorrent";
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};
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};
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rpcweb-imp = {
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services.nginx.enable = mkDefault true;
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services.nginx.virtualHosts.rtorrent = {
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default = mkDefault true;
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inherit (webcfg) basicAuth port;
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root = optionalString rucfg.enable webdir;
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locations = {
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"/RPC2".extraConfig = ''
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include ${pkgs.nginx}/conf/scgi_params;
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scgi_param SCRIPT_NAME /RPC2;
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scgi_pass unix:${cfg.xmlrpc-socket};
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'';
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} // (optionalAttrs rucfg.enable {
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"~ \.php$".extraConfig = ''
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client_max_body_size 200M;
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fastcgi_split_path_info ^(.+\.php)(/.+)$;
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fastcgi_pass unix:${fpm-socket};
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try_files $uri =404;
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fastcgi_index index.php;
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include ${pkgs.nginx}/conf/fastcgi_params;
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include ${pkgs.nginx}/conf/fastcgi.conf;
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''; }
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);
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};
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};
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rutorrent-imp = {
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services.phpfpm = {
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# phpfpm does not have an enable option
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poolConfigs = {
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rutorrent = ''
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user = ${nginx-user}
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group = ${nginx-group}
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listen = ${fpm-socket}
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listen.owner = ${nginx-user}
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listen.group = ${nginx-group}
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pm = dynamic
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pm.max_children = 5
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pm.start_servers = 2
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pm.min_spare_servers = 1
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pm.max_spare_servers = 3
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chdir = /
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php_admin_value[error_log] = 'stderr'
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php_admin_flag[log_errors] = on
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catch_workers_output = yes
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env[PATH] = ${makeBinPath rutorrent-deps}
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'';
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};
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};
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};
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in out
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