feat: recreate minecraft-servers module
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@ -1,211 +0,0 @@
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{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.minecraft-servers;
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eulaFile = builtins.toFile "eula.txt" ''
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# eula.txt managed by NixOS Configuration
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eula=true
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'';
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whitelistFile = server:
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pkgs.writeText "whitelist.json" (builtins.toJSON (mapAttrsToList (n: v: {
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name = n;
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uuid = v;
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}) server.whitelist));
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cfgToString = v: if builtins.isBool v then boolToString v else toString v;
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serverPropertiesFile = server:
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pkgs.writeText "server.properties" (''
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# server.properties managed by NixOS configuration
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'' + concatStringsSep "\n"
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(mapAttrsToList (n: v: "${n}=${cfgToString v}") server.serverProperties));
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tmux = "${getBin pkgs.tmux}/bin/tmux";
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stopScript = name:
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pkgs.writeScript "minecraft-stop" ''
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#!${pkgs.runtimeShell}
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if ! [ -d "/proc/$1" ]; then
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exit 0
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fi
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${tmux} -S ${cfgdataDir}/${name}.sock send-keys Enter stop Enter
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${getBin pkgs.coreutils}/bin/tail --pid-"$1" -f /dev/null
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'';
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cfgdataDir = "/var/lib/minecraft";
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mkService = name: inst:
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builtins.trace "${name} building" {
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name = "minecraft-server-${name}";
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value = builtins.trace "${name}: value: build" {
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description = "Minecraft Server Service: ${name}";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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serviceConfig =
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builtins.trace "${name}: value: serviceConfig: building" {
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ExecStart = ''
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${tmux} -S ${cfgdataDir}/${name}.sock new \
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-d ${inst.package}/bin/minecraft-server ${inst.jvmOpts}
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# '';
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ExecStop = "${stopScript name} $MAINPID";
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Restart = "always";
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Type = "forking";
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GuessMainPIP = true;
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User = "minecraft";
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WorkingDirectory = "${cfgdataDir}/${name}";
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};
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preStart = ''
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ln -sf ${eulaFile} eula.txt
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'' + (if inst.declarative then ''
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if [ -e .declarative ]; then
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# Was declarative before, no need to back up anything
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ln -sf ${whitelistFile inst} whitelist.json
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cp -f ${serverPropertiesFile inst} server.properties
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else
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# Declarative for the first time, backup stateful files
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ln -sb --suffix=.stateful ${whitelistFile inst} whitelist.json
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cp -b --suffix=.stateful ${
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serverPropertiesFile inst
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} server.properties
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# server.properties must have write permissions, because every time
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# the server starts it first parses the file and then regenerates it..
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chmod +w server.properties
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echo "Autogenerated file that signifies that this server configuration is managed declaratively by NixOS" \
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> .declarative
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fi
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'' else ''
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if [ -e .declarative ]; then
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rm .declarative
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fi
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'');
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postStart = ''
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${pkgs.coreutils}/bin/chmod 660 ${cfgdataDir}/${name}.sock
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${pkgs.coreutils}/bin/chgrp minecraft ${cfgdataDir}/${name}.sock
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'';
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};
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};
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generatedServices = mapAttrs' mkService cfg.servers;
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in {
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options = {
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services.minecraft-servers = {
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enable = mkEnableOption "minecraft servers";
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# TODO: verbose minecraft-servers enable option
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openFirewall =
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mkEnableOption "opening the firewall for each server by default";
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# TODO: verbose outer openFirewall option
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dataDir = mkOption {
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type = types.path;
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default = "/var/lib/minecraft";
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# TODO: verbose dataDir option
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};
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servers = mkOption {
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type = types.attrsOf (types.submodule {
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enable = mkEnableOption "this minecraft server";
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# TODO: verbose server enable option
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declarative = mkEnableOption "declarative server management";
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# TODO: verbose declarative option
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eula = mkEnableOption "accepting the eula";
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# TODO: verbose eula option
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openFirewall = mkOption {
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type = types.bool;
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default = true; # cfg.openFirewall;
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# TODO: openFirewall description
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};
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jvmOpts = mkOption {
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type = types.separatedString " ";
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default = "-Xmx2048M -Xms2048M";
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# TODO: verbose jvmOpts option
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};
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package = mkOption {
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type = types.package;
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default = pkgs.minecraft-server;
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# TODO: verbose package option
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};
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whitelist = mkOption {
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type = let
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minecraftUUID = types.strMatching
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"[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}"
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// {
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description = "Minecraft UUID";
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};
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in types.attrsOf minecraftUUID;
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default = { };
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# TODO: verbose whitelist option
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};
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serverProperties = mkOption {
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type = with types; attrsOf (oneOf [ bool int str ]);
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default = { server-port = 25565; };
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# TODO: verbose serverProperties option
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};
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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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users.users.minecraft = {
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description = "Minecraft server service user";
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home = cfg.dataDir;
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createHome = true;
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isSystemUser = true;
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group = "minecraft";
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};
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users.groups.minecraft = { };
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systemd.services =
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mkIf (cfg.enable && cfg.servers != { }) generatedServices;
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};
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# networking.firewall = let
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# propertyFunc = attrsets.mapAttrsToList (name: value:
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# let props = value.serverProperties;
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# in (if value.declarative then [
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# (props.server-port or 25565)
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# (if props.enable-rcon or false then
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# props."rcon.port" or 25575
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# else
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# null)
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# (if props.enable-query or false then
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# props "query.port" or 25565
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# else
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# null)
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# ] else
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# null)) cfg.servers;
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# openedPorts = lists.flatten [ serverPorts queryPorts rconPorts ];
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# in {
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# allowedUDPPorts = openedPorts;
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# allowedTCPPorts = openedPorts;
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# };
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# assertions = [{
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# assertion = all (i: i.eula == true) (attrValues cfg.servers);
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# message = "You must agree to Mojangs EULA to run minecraft-server."
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# + " Read https://account.mojang.com/documents/minecraft_eula and"
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# + " set `services.minecraft-servers.servers.<name>.eula` to `true` for all servers if you agree.";
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# }];
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}
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