{ config, lib, pkgs, ... }: with lib; let cfg = config.services.magnetico; dataDir = "/var/lib/magnetico"; credFile = with cfg.web; if credentialsFile != null then credentialsFile else pkgs.writeText "magnetico-credentials" (concatStrings (mapAttrsToList (user: hash: "${user}:${hash}\n") cfg.web.credentials)); # default options in magneticod/main.go dbURI = concatStrings [ "sqlite3://${dataDir}/database.sqlite3" "?_journal_mode=WAL" "&_busy_timeout=3000" "&_foreign_keys=true" ]; crawlerArgs = with cfg.crawler; escapeShellArgs ([ "--database=${dbURI}" "--indexer-addr=${address}:${toString port}" "--indexer-max-neighbors=${toString maxNeighbors}" "--leech-max-n=${toString maxLeeches}" ] ++ extraOptions); webArgs = with cfg.web; escapeShellArgs ([ "--database=${dbURI}" (if (cfg.web.credentialsFile != null || cfg.web.credentials != { }) then "--credentials=${toString credFile}" else "--no-auth") "--addr=${address}:${toString port}" ] ++ extraOptions); in { ###### interface options.services.magnetico = { enable = mkEnableOption "Magnetico, Bittorrent DHT crawler"; crawler.address = mkOption { type = types.str; default = "0.0.0.0"; example = "1.2.3.4"; description = '' Address to be used for indexing DHT nodes. ''; }; crawler.port = mkOption { type = types.port; default = 0; description = '' Port to be used for indexing DHT nodes. This port should be added to . ''; }; crawler.maxNeighbors = mkOption { type = types.ints.positive; default = 1000; description = '' Maximum number of simultaneous neighbors of an indexer. Be careful changing this number: high values can very easily cause your network to be congested or even crash your router. ''; }; crawler.maxLeeches = mkOption { type = types.ints.positive; default = 200; description = '' Maximum number of simultaneous leeches. ''; }; crawler.extraOptions = mkOption { type = types.listOf types.str; default = []; description = '' Extra command line arguments to pass to magneticod. ''; }; web.address = mkOption { type = types.str; default = "localhost"; example = "1.2.3.4"; description = '' Address the web interface will listen to. ''; }; web.port = mkOption { type = types.port; default = 8080; description = '' Port the web interface will listen to. ''; }; web.credentials = mkOption { type = types.attrsOf types.str; default = {}; example = lib.literalExample '' { myuser = "$2y$12$YE01LZ8jrbQbx6c0s2hdZO71dSjn2p/O9XsYJpz.5968yCysUgiaG"; } ''; description = '' The credentials to access the web interface, in case authentication is enabled, in the format username:hash. If unset no authentication will be required. Usernames must start with a lowercase ([a-z]) ASCII character, might contain non-consecutive underscores except at the end, and consists of small-case a-z characters and digits 0-9. The htpasswd tool from the apacheHttpd package may be used to generate the hash: htpasswd -bnBC 12 username password The hashes will be stored world-readable in the nix store. Consider using the credentialsFile option if you don't want this. ''; }; web.credentialsFile = mkOption { type = types.nullOr types.path; default = null; description = '' The path to the file holding the credentials to access the web interface. If unset no authentication will be required. The file must constain user names and password hashes in the format username:hash , one for each line. Usernames must start with a lowecase ([a-z]) ASCII character, might contain non-consecutive underscores except at the end, and consists of small-case a-z characters and digits 0-9. The htpasswd tool from the apacheHttpd package may be used to generate the hash: htpasswd -bnBC 12 username password ''; }; web.extraOptions = mkOption { type = types.listOf types.str; default = []; description = '' Extra command line arguments to pass to magneticow. ''; }; }; ###### implementation config = mkIf cfg.enable { users.users.magnetico = { description = "Magnetico daemons user"; isSystemUser = true; }; systemd.services.magneticod = { description = "Magnetico DHT crawler"; wantedBy = [ "multi-user.target" ]; after = [ "network-online.target" ]; serviceConfig = { User = "magnetico"; Restart = "on-failure"; ExecStart = "${pkgs.magnetico}/bin/magneticod ${crawlerArgs}"; }; }; systemd.services.magneticow = { description = "Magnetico web interface"; wantedBy = [ "multi-user.target" ]; after = [ "network-online.target" "magneticod.service"]; serviceConfig = { User = "magnetico"; StateDirectory = "magnetico"; Restart = "on-failure"; ExecStart = "${pkgs.magnetico}/bin/magneticow ${webArgs}"; }; }; assertions = [ { assertion = cfg.web.credentialsFile == null || cfg.web.credentials == { }; message = '' The options services.magnetico.web.credentialsFile and services.magnetico.web.credentials are mutually exclusives. ''; } ]; }; }