147 lines
4.1 KiB
Nix
147 lines
4.1 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.rmfakecloud;
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serviceDataDir = "/var/lib/rmfakecloud";
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in {
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options = {
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services.rmfakecloud = {
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enable = mkEnableOption "rmfakecloud remarkable self-hosted cloud";
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package = mkOption {
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type = types.package;
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default = pkgs.rmfakecloud;
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defaultText = literalExpression "pkgs.rmfakecloud";
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description = ''
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rmfakecloud package to use.
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The default does not include the web user interface.
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'';
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};
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storageUrl = mkOption {
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type = types.str;
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example = "https://local.appspot.com";
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description = ''
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URL used by the tablet to access the rmfakecloud service.
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'';
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};
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port = mkOption {
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type = types.port;
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default = 3000;
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description = ''
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Listening port number.
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'';
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};
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logLevel = mkOption {
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type = types.enum [ "info" "debug" "warn" "error" ];
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default = "info";
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description = ''
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Logging level.
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'';
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};
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extraSettings = mkOption {
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type = with types; attrsOf str;
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default = { };
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example = { DATADIR = "/custom/path/for/rmfakecloud/data"; };
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description = ''
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Extra settings in the form of a set of key-value pairs.
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For tokens and secrets, use `environmentFile` instead.
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Available settings are listed on
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https://ddvk.github.io/rmfakecloud/install/configuration/.
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'';
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};
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environmentFile = mkOption {
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type = with types; nullOr path;
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default = null;
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example = "/etc/secrets/rmfakecloud.env";
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description = ''
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Path to an environment file loaded for the rmfakecloud service.
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This can be used to securely store tokens and secrets outside of the
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world-readable Nix store. Since this file is read by systemd, it may
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have permission 0400 and be owned by root.
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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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systemd.services.rmfakecloud = {
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description = "rmfakecloud remarkable self-hosted cloud";
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environment = {
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STORAGE_URL = cfg.storageUrl;
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PORT = toString cfg.port;
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LOGLEVEL = cfg.logLevel;
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} // cfg.extraSettings;
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preStart = ''
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# Generate the secret key used to sign client session tokens.
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# Replacing it invalidates the previously established sessions.
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if [ -z "$JWT_SECRET_KEY" ] && [ ! -f jwt_secret_key ]; then
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(umask 077; touch jwt_secret_key)
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cat /dev/urandom | tr -cd '[:alnum:]' | head -c 48 >> jwt_secret_key
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fi
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'';
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script = ''
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if [ -z "$JWT_SECRET_KEY" ]; then
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export JWT_SECRET_KEY="$(cat jwt_secret_key)"
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fi
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${cfg.package}/bin/rmfakecloud
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'';
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wantedBy = [ "multi-user.target" ];
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wants = [ "network-online.target" ];
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after = [ "network-online.target" ];
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serviceConfig = {
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Type = "simple";
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Restart = "always";
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EnvironmentFile =
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mkIf (cfg.environmentFile != null) cfg.environmentFile;
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AmbientCapabilities =
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mkIf (cfg.port < 1024) [ "CAP_NET_BIND_SERVICE" ];
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DynamicUser = true;
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PrivateDevices = true;
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ProtectHome = true;
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ProtectKernelTunables = true;
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ProtectKernelModules = true;
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ProtectControlGroups = true;
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CapabilityBoundingSet = [ "" ];
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DevicePolicy = "closed";
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LockPersonality = true;
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MemoryDenyWriteExecute = true;
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ProtectClock = true;
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ProtectHostname = true;
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ProtectKernelLogs = true;
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ProtectProc = "invisible";
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ProcSubset = "pid";
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RemoveIPC = true;
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RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
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RestrictNamespaces = true;
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RestrictRealtime = true;
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RestrictSUIDSGID = true;
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SystemCallArchitectures = "native";
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WorkingDirectory = serviceDataDir;
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StateDirectory = baseNameOf serviceDataDir;
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UMask = 0027;
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};
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};
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};
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meta.maintainers = with maintainers; [ pacien ];
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}
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