2e751c0772
the conversion procedure is simple: - find all things that look like options, ie calls to either `mkOption` or `lib.mkOption` that take an attrset. remember the attrset as the option - for all options, find a `description` attribute who's value is not a call to `mdDoc` or `lib.mdDoc` - textually convert the entire value of the attribute to MD with a few simple regexes (the set from mdize-module.sh) - if the change produced a change in the manual output, discard - if the change kept the manual unchanged, add some text to the description to make sure we've actually found an option. if the manual changes this time, keep the converted description this procedure converts 80% of nixos options to markdown. around 2000 options remain to be inspected, but most of those fail the "does not change the manual output check": currently the MD conversion process does not faithfully convert docbook tags like <code> and <package>, so any option using such tags will not be converted at all.
321 lines
11 KiB
Nix
321 lines
11 KiB
Nix
{ config, pkgs, lib, ... }:
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with lib;
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let
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cfg = config.services.paperless;
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defaultUser = "paperless";
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# Don't start a redis instance if the user sets a custom redis connection
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enableRedis = !hasAttr "PAPERLESS_REDIS" cfg.extraConfig;
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redisServer = config.services.redis.servers.paperless;
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env = {
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PAPERLESS_DATA_DIR = cfg.dataDir;
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PAPERLESS_MEDIA_ROOT = cfg.mediaDir;
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PAPERLESS_CONSUMPTION_DIR = cfg.consumptionDir;
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GUNICORN_CMD_ARGS = "--bind=${cfg.address}:${toString cfg.port}";
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} // (
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lib.mapAttrs (_: toString) cfg.extraConfig
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) // (optionalAttrs enableRedis {
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PAPERLESS_REDIS = "unix://${redisServer.unixSocket}";
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});
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manage = let
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setupEnv = lib.concatStringsSep "\n" (mapAttrsToList (name: val: "export ${name}=\"${val}\"") env);
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in pkgs.writeShellScript "manage" ''
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${setupEnv}
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exec ${cfg.package}/bin/paperless-ngx "$@"
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'';
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# Secure the services
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defaultServiceConfig = {
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TemporaryFileSystem = "/:ro";
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BindReadOnlyPaths = [
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"/nix/store"
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"-/etc/resolv.conf"
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"-/etc/nsswitch.conf"
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"-/etc/hosts"
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"-/etc/localtime"
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"-/run/postgresql"
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] ++ (optional enableRedis redisServer.unixSocket);
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BindPaths = [
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cfg.consumptionDir
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cfg.dataDir
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cfg.mediaDir
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];
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CapabilityBoundingSet = "";
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# ProtectClock adds DeviceAllow=char-rtc r
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DeviceAllow = "";
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LockPersonality = true;
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MemoryDenyWriteExecute = true;
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NoNewPrivileges = true;
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PrivateDevices = true;
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PrivateMounts = true;
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PrivateNetwork = true;
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PrivateTmp = true;
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PrivateUsers = true;
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ProtectClock = true;
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# Breaks if the home dir of the user is in /home
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# Also does not add much value in combination with the TemporaryFileSystem.
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# ProtectHome = true;
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ProtectHostname = true;
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# Would re-mount paths ignored by temporary root
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#ProtectSystem = "strict";
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ProtectControlGroups = true;
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ProtectKernelLogs = true;
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ProtectKernelModules = true;
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ProtectKernelTunables = true;
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ProtectProc = "invisible";
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# Don't restrict ProcSubset because django-q requires read access to /proc/stat
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# to query CPU and memory information.
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# Note that /proc only contains processes of user `paperless`, so this is safe.
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# ProcSubset = "pid";
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RestrictAddressFamilies = [ "AF_UNIX" "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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SupplementaryGroups = optional enableRedis redisServer.user;
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SystemCallArchitectures = "native";
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SystemCallFilter = [ "@system-service" "~@privileged @resources @setuid @keyring" ];
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# Does not work well with the temporary root
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#UMask = "0066";
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};
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in
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{
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meta.maintainers = with maintainers; [ erikarvstedt Flakebi ];
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imports = [
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(mkRenamedOptionModule [ "services" "paperless-ng" ] [ "services" "paperless" ])
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];
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options.services.paperless = {
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enable = mkOption {
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type = lib.types.bool;
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default = false;
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description = lib.mdDoc ''
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Enable Paperless.
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When started, the Paperless database is automatically created if it doesn't
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exist and updated if the Paperless package has changed.
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Both tasks are achieved by running a Django migration.
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A script to manage the Paperless instance (by wrapping Django's manage.py) is linked to
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`''${dataDir}/paperless-manage`.
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'';
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};
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dataDir = mkOption {
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type = types.str;
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default = "/var/lib/paperless";
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description = lib.mdDoc "Directory to store the Paperless data.";
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};
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mediaDir = mkOption {
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type = types.str;
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default = "${cfg.dataDir}/media";
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defaultText = literalExpression ''"''${dataDir}/media"'';
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description = lib.mdDoc "Directory to store the Paperless documents.";
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};
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consumptionDir = mkOption {
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type = types.str;
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default = "${cfg.dataDir}/consume";
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defaultText = literalExpression ''"''${dataDir}/consume"'';
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description = lib.mdDoc "Directory from which new documents are imported.";
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};
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consumptionDirIsPublic = mkOption {
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type = types.bool;
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default = false;
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description = lib.mdDoc "Whether all users can write to the consumption dir.";
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};
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passwordFile = mkOption {
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type = types.nullOr types.path;
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default = null;
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example = "/run/keys/paperless-password";
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description = lib.mdDoc ''
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A file containing the superuser password.
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A superuser is required to access the web interface.
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If unset, you can create a superuser manually by running
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`''${dataDir}/paperless-manage createsuperuser`.
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The default superuser name is `admin`. To change it, set
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option {option}`extraConfig.PAPERLESS_ADMIN_USER`.
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WARNING: When changing the superuser name after the initial setup, the old superuser
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will continue to exist.
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To disable login for the web interface, set the following:
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`extraConfig.PAPERLESS_AUTO_LOGIN_USERNAME = "admin";`.
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WARNING: Only use this on a trusted system without internet access to Paperless.
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'';
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};
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address = mkOption {
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type = types.str;
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default = "localhost";
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description = lib.mdDoc "Web interface address.";
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};
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port = mkOption {
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type = types.port;
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default = 28981;
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description = lib.mdDoc "Web interface port.";
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};
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extraConfig = mkOption {
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type = types.attrs;
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default = {};
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description = lib.mdDoc ''
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Extra paperless config options.
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See [the documentation](https://paperless-ngx.readthedocs.io/en/latest/configuration.html)
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for available options.
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'';
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example = literalExpression ''
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{
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PAPERLESS_OCR_LANGUAGE = "deu+eng";
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}
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'';
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};
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user = mkOption {
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type = types.str;
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default = defaultUser;
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description = lib.mdDoc "User under which Paperless runs.";
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};
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package = mkOption {
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type = types.package;
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default = pkgs.paperless-ngx;
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defaultText = literalExpression "pkgs.paperless-ngx";
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description = lib.mdDoc "The Paperless package to use.";
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};
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};
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config = mkIf cfg.enable {
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services.redis.servers.paperless.enable = mkIf enableRedis true;
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systemd.tmpfiles.rules = [
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"d '${cfg.dataDir}' - ${cfg.user} ${config.users.users.${cfg.user}.group} - -"
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"d '${cfg.mediaDir}' - ${cfg.user} ${config.users.users.${cfg.user}.group} - -"
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(if cfg.consumptionDirIsPublic then
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"d '${cfg.consumptionDir}' 777 - - - -"
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else
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"d '${cfg.consumptionDir}' - ${cfg.user} ${config.users.users.${cfg.user}.group} - -"
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)
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];
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systemd.services.paperless-scheduler = {
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description = "Paperless scheduler";
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serviceConfig = defaultServiceConfig // {
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User = cfg.user;
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ExecStart = "${cfg.package}/bin/paperless-ngx qcluster";
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Restart = "on-failure";
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# The `mbind` syscall is needed for running the classifier.
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SystemCallFilter = defaultServiceConfig.SystemCallFilter ++ [ "mbind" ];
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# Needs to talk to mail server for automated import rules
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PrivateNetwork = false;
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};
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environment = env;
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wantedBy = [ "multi-user.target" ];
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wants = [ "paperless-consumer.service" "paperless-web.service" ];
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preStart = ''
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ln -sf ${manage} ${cfg.dataDir}/paperless-manage
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# Auto-migrate on first run or if the package has changed
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versionFile="${cfg.dataDir}/src-version"
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if [[ $(cat "$versionFile" 2>/dev/null) != ${cfg.package} ]]; then
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${cfg.package}/bin/paperless-ngx migrate
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echo ${cfg.package} > "$versionFile"
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fi
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''
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+ optionalString (cfg.passwordFile != null) ''
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export PAPERLESS_ADMIN_USER="''${PAPERLESS_ADMIN_USER:-admin}"
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export PAPERLESS_ADMIN_PASSWORD=$(cat "${cfg.dataDir}/superuser-password")
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superuserState="$PAPERLESS_ADMIN_USER:$PAPERLESS_ADMIN_PASSWORD"
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superuserStateFile="${cfg.dataDir}/superuser-state"
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if [[ $(cat "$superuserStateFile" 2>/dev/null) != $superuserState ]]; then
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${cfg.package}/bin/paperless-ngx manage_superuser
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echo "$superuserState" > "$superuserStateFile"
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fi
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'';
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} // optionalAttrs enableRedis {
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after = [ "redis-paperless.service" ];
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};
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# Reading the user-provided password file requires root access
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systemd.services.paperless-copy-password = mkIf (cfg.passwordFile != null) {
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requiredBy = [ "paperless-scheduler.service" ];
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before = [ "paperless-scheduler.service" ];
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serviceConfig = {
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ExecStart = ''
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${pkgs.coreutils}/bin/install --mode 600 --owner '${cfg.user}' --compare \
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'${cfg.passwordFile}' '${cfg.dataDir}/superuser-password'
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'';
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Type = "oneshot";
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};
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};
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systemd.services.paperless-consumer = {
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description = "Paperless document consumer";
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serviceConfig = defaultServiceConfig // {
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User = cfg.user;
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ExecStart = "${cfg.package}/bin/paperless-ngx document_consumer";
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Restart = "on-failure";
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};
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environment = env;
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# Bind to `paperless-scheduler` so that the consumer never runs
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# during migrations
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bindsTo = [ "paperless-scheduler.service" ];
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after = [ "paperless-scheduler.service" ];
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};
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systemd.services.paperless-web = {
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description = "Paperless web server";
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serviceConfig = defaultServiceConfig // {
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User = cfg.user;
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ExecStart = ''
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${pkgs.python3Packages.gunicorn}/bin/gunicorn \
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-c ${cfg.package}/lib/paperless-ngx/gunicorn.conf.py paperless.asgi:application
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'';
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Restart = "on-failure";
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AmbientCapabilities = "CAP_NET_BIND_SERVICE";
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CapabilityBoundingSet = "CAP_NET_BIND_SERVICE";
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# gunicorn needs setuid
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SystemCallFilter = defaultServiceConfig.SystemCallFilter ++ [ "@setuid" ];
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# Needs to serve web page
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PrivateNetwork = false;
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};
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environment = env // {
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PATH = mkForce cfg.package.path;
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PYTHONPATH = "${cfg.package.pythonPath}:${cfg.package}/lib/paperless-ngx/src";
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};
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# Allow the web interface to access the private /tmp directory of the server.
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# This is required to support uploading files via the web interface.
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unitConfig.JoinsNamespaceOf = "paperless-scheduler.service";
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# Bind to `paperless-scheduler` so that the web server never runs
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# during migrations
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bindsTo = [ "paperless-scheduler.service" ];
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after = [ "paperless-scheduler.service" ];
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};
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users = optionalAttrs (cfg.user == defaultUser) {
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users.${defaultUser} = {
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group = defaultUser;
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uid = config.ids.uids.paperless;
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home = cfg.dataDir;
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};
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groups.${defaultUser} = {
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gid = config.ids.gids.paperless;
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};
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};
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};
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}
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