555 lines
18 KiB
Nix
555 lines
18 KiB
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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let
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cfg = config.services.davis;
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db = cfg.database;
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mail = cfg.mail;
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mysqlLocal = db.createLocally && db.driver == "mysql";
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pgsqlLocal = db.createLocally && db.driver == "postgresql";
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user = cfg.user;
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group = cfg.group;
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isSecret = v: lib.isAttrs v && v ? _secret && (lib.isString v._secret || builtins.isPath v._secret);
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davisEnvVars = lib.generators.toKeyValue {
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mkKeyValue = lib.flip lib.generators.mkKeyValueDefault "=" {
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mkValueString =
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v:
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if builtins.isInt v then
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toString v
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else if lib.isString v then
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"\"${v}\""
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else if true == v then
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"true"
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else if false == v then
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"false"
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else if null == v then
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""
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else if isSecret v then
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if (lib.isString v._secret) then
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builtins.hashString "sha256" v._secret
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else
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builtins.hashString "sha256" (builtins.readFile v._secret)
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else
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throw "unsupported type ${builtins.typeOf v}: ${(lib.generators.toPretty { }) v}";
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};
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};
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secretPaths = lib.mapAttrsToList (_: v: v._secret) (lib.filterAttrs (_: isSecret) cfg.config);
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mkSecretReplacement = file: ''
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replace-secret ${
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lib.escapeShellArgs [
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(
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if (lib.isString file) then
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builtins.hashString "sha256" file
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else
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builtins.hashString "sha256" (builtins.readFile file)
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)
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file
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"${cfg.dataDir}/.env.local"
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]
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}
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'';
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secretReplacements = lib.concatMapStrings mkSecretReplacement secretPaths;
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filteredConfig = lib.converge (lib.filterAttrsRecursive (
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_: v:
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!lib.elem v [
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{ }
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null
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]
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)) cfg.config;
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davisEnv = pkgs.writeText "davis.env" (davisEnvVars filteredConfig);
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in
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{
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options.services.davis = {
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enable = lib.mkEnableOption (lib.mdDoc "Davis is a caldav and carddav server");
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user = lib.mkOption {
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default = "davis";
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description = lib.mdDoc "User davis runs as.";
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type = lib.types.str;
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};
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group = lib.mkOption {
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default = "davis";
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description = lib.mdDoc "Group davis runs as.";
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type = lib.types.str;
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};
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package = lib.mkPackageOption pkgs "davis" { };
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dataDir = lib.mkOption {
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type = lib.types.path;
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default = "/var/lib/davis";
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description = lib.mdDoc ''
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Davis data directory.
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'';
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};
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hostname = lib.mkOption {
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type = lib.types.str;
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example = "davis.yourdomain.org";
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description = lib.mdDoc ''
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Domain of the host to serve davis under. You may want to change it if you
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run Davis on a different URL than davis.yourdomain.
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'';
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};
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config = lib.mkOption {
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type = lib.types.attrsOf (
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lib.types.nullOr (
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lib.types.either
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(lib.types.oneOf [
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lib.types.bool
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lib.types.int
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lib.types.port
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lib.types.path
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lib.types.str
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])
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(
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lib.types.submodule {
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options = {
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_secret = lib.mkOption {
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type = lib.types.nullOr (
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lib.types.oneOf [
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lib.types.str
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lib.types.path
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]
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);
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description = lib.mdDoc ''
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The path to a file containing the value the
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option should be set to in the final
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configuration file.
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'';
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};
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};
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}
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)
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)
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);
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default = { };
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example = '''';
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description = lib.mdDoc '''';
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};
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adminLogin = lib.mkOption {
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type = lib.types.str;
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default = "root";
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description = lib.mdDoc ''
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Username for the admin account.
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'';
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};
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adminPasswordFile = lib.mkOption {
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type = lib.types.path;
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description = lib.mdDoc ''
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The full path to a file that contains the admin's password. Must be
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readable by the user.
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'';
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example = "/run/secrets/davis-admin-pass";
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};
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appSecretFile = lib.mkOption {
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type = lib.types.path;
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description = lib.mdDoc ''
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A file containing the Symfony APP_SECRET - Its value should be a series
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of characters, numbers and symbols chosen randomly and the recommended
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length is around 32 characters. Can be generated with <code>cat
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/dev/urandom | tr -dc a-zA-Z0-9 | fold -w 48 | head -n 1</code>.
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'';
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example = "/run/secrets/davis-appsecret";
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};
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database = {
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driver = lib.mkOption {
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type = lib.types.enum [
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"sqlite"
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"postgresql"
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"mysql"
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];
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default = "sqlite";
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description = lib.mdDoc "Database type, required in all circumstances.";
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};
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urlFile = lib.mkOption {
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type = lib.types.nullOr lib.types.path;
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default = null;
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example = "/run/secrets/davis-db-url";
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description = lib.mdDoc ''
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A file containing the database connection url. If set then it
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overrides all other database settings (except driver). This is
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mandatory if you want to use an external database, that is when
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`services.davis.database.createLocally` is `false`.
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'';
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};
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name = lib.mkOption {
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type = lib.types.nullOr lib.types.str;
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default = "davis";
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description = lib.mdDoc "Database name, only used when the databse is created locally.";
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};
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createLocally = lib.mkOption {
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type = lib.types.bool;
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default = true;
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description = lib.mdDoc "Create the database and database user locally.";
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};
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};
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mail = {
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dsn = lib.mkOption {
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type = lib.types.nullOr lib.types.str;
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default = null;
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description = lib.mdDoc "Mail DSN for sending emails. Mutually exclusive with `services.davis.mail.dsnFile`.";
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example = "smtp://username:password@example.com:25";
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};
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dsnFile = lib.mkOption {
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type = lib.types.nullOr lib.types.str;
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default = null;
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example = "/run/secrets/davis-mail-dsn";
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description = lib.mdDoc "A file containing the mail DSN for sending emails. Mutually exclusive with `servies.davis.mail.dsn`.";
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};
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inviteFromAddress = lib.mkOption {
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type = lib.types.nullOr lib.types.str;
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default = null;
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description = lib.mdDoc "Email address to send invitations from.";
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example = "no-reply@dav.example.com";
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};
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};
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nginx = lib.mkOption {
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type = lib.types.submodule (
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lib.recursiveUpdate (import ../web-servers/nginx/vhost-options.nix { inherit config lib; }) { }
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);
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default = null;
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example = ''
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{
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serverAliases = [
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"dav.''${config.networking.domain}"
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];
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# To enable encryption and let let's encrypt take care of certificate
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forceSSL = true;
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enableACME = true;
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}
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'';
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description = lib.mdDoc ''
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With this option, you can customize the nginx virtualHost settings.
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'';
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};
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poolConfig = lib.mkOption {
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type = lib.types.attrsOf (
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lib.types.oneOf [
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lib.types.str
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lib.types.int
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lib.types.bool
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]
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);
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default = {
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"pm" = "dynamic";
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"pm.max_children" = 32;
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"pm.start_servers" = 2;
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"pm.min_spare_servers" = 2;
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"pm.max_spare_servers" = 4;
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"pm.max_requests" = 500;
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};
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description = lib.mdDoc ''
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Options for the davis PHP pool. See the documentation on <literal>php-fpm.conf</literal>
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for details on configuration directives.
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'';
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};
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};
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config =
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let
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defaultServiceConfig = {
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ReadWritePaths = "${cfg.dataDir}";
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User = user;
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UMask = 77;
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DeviceAllow = "";
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LockPersonality = true;
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NoNewPrivileges = true;
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PrivateDevices = true;
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PrivateTmp = true;
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PrivateUsers = true;
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ProcSubset = "pid";
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ProtectClock = true;
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ProtectControlGroups = true;
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ProtectHome = true;
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ProtectHostname = 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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ProtectSystem = "strict";
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RemoveIPC = true;
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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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SystemCallFilter = [
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"@system-service"
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"~@resources"
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"~@privileged"
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];
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WorkingDirectory = "${cfg.package}/";
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};
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in
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lib.mkIf cfg.enable {
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assertions = [
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{
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assertion = db.createLocally -> db.urlFile == null;
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message = "services.davis.database.urlFile must be unset if services.davis.database.createLocally is set true.";
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}
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{
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assertion = db.createLocally || db.urlFile != null;
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message = "One of services.davis.database.urlFile or services.davis.database.createLocally must be set.";
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}
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{
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assertion = (mail.dsn != null) != (mail.dsnFile != null);
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message = "One of (and only one of) services.davis.mail.dsn or services.davis.mail.dsnFile must be set.";
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}
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];
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services.davis.config =
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{
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APP_ENV = "prod";
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CACHE_DIR = "${cfg.dataDir}/var/cache";
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# note: we do not need the log dir (we log to stdout/journald), by davis/symfony will try to create it, and the default value is one in the nix-store
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# so we set it to a path under dataDir to avoid something like: Unable to create the "logs" directory (/nix/store/5cfskz0ybbx37s1161gjn5klwb5si1zg-davis-4.4.1/var/log).
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LOG_DIR = "${cfg.dataDir}/var/log";
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LOG_FILE_PATH = "/dev/stdout";
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DATABASE_DRIVER = db.driver;
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INVITE_FROM_ADDRESS = mail.inviteFromAddress;
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APP_SECRET._secret = cfg.appSecretFile;
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ADMIN_LOGIN = cfg.adminLogin;
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ADMIN_PASSWORD._secret = cfg.adminPasswordFile;
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APP_TIMEZONE = config.time.timeZone;
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WEBDAV_ENABLED = false;
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CALDAV_ENABLED = true;
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CARDDAV_ENABLED = true;
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}
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// (if mail.dsn != null then { MAILER_DSN = mail.dsn; } else { MAILER_DSN._secret = mail.dsnFile; })
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// (
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if db.createLocally then
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{
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DATABASE_URL =
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if db.driver == "sqlite" then
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"sqlite:///${cfg.dataDir}/davis.db" # note: sqlite needs 4 slashes for an absolute path
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else if
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pgsqlLocal
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# note: davis expects a non-standard postgres uri (due to the underlying doctrine library)
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# specifically the charset query parameter, and the dummy hostname which is overriden by the host query parameter
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then
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"postgres://${user}@localhost/${db.name}?host=/run/postgresql&charset=UTF-8"
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else if mysqlLocal then
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"mysql://${user}@localhost/${db.name}?socket=/run/mysqld/mysqld.sock"
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else
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null;
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}
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else
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{ DATABASE_URL._secret = db.urlFile; }
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);
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users = {
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users = lib.mkIf (user == "davis") {
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davis = {
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description = "Davis service user";
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group = cfg.group;
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isSystemUser = true;
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home = cfg.dataDir;
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};
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};
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groups = lib.mkIf (group == "davis") { davis = { }; };
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};
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systemd.tmpfiles.rules = [
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"d ${cfg.dataDir} 0710 ${user} ${group} - -"
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"d ${cfg.dataDir}/var 0700 ${user} ${group} - -"
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"d ${cfg.dataDir}/var/log 0700 ${user} ${group} - -"
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"d ${cfg.dataDir}/var/cache 0700 ${user} ${group} - -"
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];
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services.phpfpm.pools.davis = {
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inherit user group;
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phpOptions = ''
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log_errors = on
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'';
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phpEnv = {
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ENV_DIR = "${cfg.dataDir}";
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CACHE_DIR = "${cfg.dataDir}/var/cache";
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#LOG_DIR = "${cfg.dataDir}/var/log";
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};
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settings =
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{
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"listen.mode" = "0660";
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"pm" = "dynamic";
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"pm.max_children" = 256;
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"pm.start_servers" = 10;
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"pm.min_spare_servers" = 5;
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"pm.max_spare_servers" = 20;
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}
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// (
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if cfg.nginx != null then
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{
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"listen.owner" = config.services.nginx.user;
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"listen.group" = config.services.nginx.group;
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}
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else
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{ }
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)
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// cfg.poolConfig;
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};
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# Reading the user-provided secret files requires root access
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systemd.services.davis-env-setup = {
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description = "Setup davis environment";
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before = [
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"phpfpm-davis.service"
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"davis-db-migrate.service"
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];
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = true;
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};
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path = [ pkgs.replace-secret ];
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restartTriggers = [
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cfg.package
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davisEnv
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];
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script = ''
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# error handling
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set -euo pipefail
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# create .env file with the upstream values
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install -T -m 0600 -o ${user} ${cfg.package}/env-upstream "${cfg.dataDir}/.env"
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# create .env.local file with the user-provided values
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install -T -m 0600 -o ${user} ${davisEnv} "${cfg.dataDir}/.env.local"
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${secretReplacements}
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'';
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};
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systemd.services.davis-db-migrate = {
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description = "Migrate davis database";
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before = [ "phpfpm-davis.service" ];
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after =
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lib.optional mysqlLocal "mysql.service"
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++ lib.optional pgsqlLocal "postgresql.service"
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++ [ "davis-env-setup.service" ];
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requires =
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lib.optional mysqlLocal "mysql.service"
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++ lib.optional pgsqlLocal "postgresql.service"
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++ [ "davis-env-setup.service" ];
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wantedBy = [ "multi-user.target" ];
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serviceConfig = defaultServiceConfig // {
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Type = "oneshot";
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RemainAfterExit = true;
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Environment = [
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"ENV_DIR=${cfg.dataDir}"
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"CACHE_DIR=${cfg.dataDir}/var/cache"
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"LOG_DIR=${cfg.dataDir}/var/log"
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];
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EnvironmentFile = "${cfg.dataDir}/.env.local";
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};
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restartTriggers = [
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cfg.package
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davisEnv
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];
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script = ''
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set -euo pipefail
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${cfg.package}/bin/console cache:clear --no-debug
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${cfg.package}/bin/console cache:warmup --no-debug
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${cfg.package}/bin/console doctrine:migrations:migrate
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'';
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};
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systemd.services.phpfpm-davis.after = [
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"davis-env-setup.service"
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"davis-db-migrate.service"
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];
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systemd.services.phpfpm-davis.requires = [
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"davis-env-setup.service"
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"davis-db-migrate.service"
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] ++ lib.optional mysqlLocal "mysql.service" ++ lib.optional pgsqlLocal "postgresql.service";
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systemd.services.phpfpm-davis.serviceConfig.ReadWritePaths = [ cfg.dataDir ];
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services.nginx = lib.mkIf (cfg.nginx != null) {
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enable = lib.mkDefault true;
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virtualHosts = {
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"${cfg.hostname}" = lib.mkMerge [
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cfg.nginx
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{
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root = lib.mkForce "${cfg.package}/public";
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extraConfig = ''
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charset utf-8;
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index index.php;
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'';
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locations = {
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"/" = {
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extraConfig = ''
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try_files $uri $uri/ /index.php$is_args$args;
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'';
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};
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"~* ^/.well-known/(caldav|carddav)$" = {
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extraConfig = ''
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return 302 $http_x_forwarded_proto://$host/dav/;
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'';
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};
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"~ ^(.+\.php)(.*)$" = {
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extraConfig = ''
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try_files $fastcgi_script_name =404;
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include ${config.services.nginx.package}/conf/fastcgi_params;
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include ${config.services.nginx.package}/conf/fastcgi.conf;
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fastcgi_pass unix:${config.services.phpfpm.pools.davis.socket};
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fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
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fastcgi_param PATH_INFO $fastcgi_path_info;
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fastcgi_split_path_info ^(.+\.php)(.*)$;
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fastcgi_param X-Forwarded-Proto $http_x_forwarded_proto;
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fastcgi_param X-Forwarded-Port $http_x_forwarded_port;
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'';
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};
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"~ /(\\.ht)" = {
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extraConfig = ''
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deny all;
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return 404;
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'';
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};
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};
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}
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];
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};
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};
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|
services.mysql = lib.mkIf mysqlLocal {
|
|
enable = true;
|
|
package = lib.mkDefault pkgs.mariadb;
|
|
ensureDatabases = [ db.name ];
|
|
ensureUsers = [
|
|
{
|
|
name = user;
|
|
ensurePermissions = {
|
|
"${db.name}.*" = "ALL PRIVILEGES";
|
|
};
|
|
}
|
|
];
|
|
};
|
|
|
|
services.postgresql = lib.mkIf pgsqlLocal {
|
|
enable = true;
|
|
ensureDatabases = [ db.name ];
|
|
ensureUsers = [
|
|
{
|
|
name = user;
|
|
ensureDBOwnership = true;
|
|
}
|
|
];
|
|
};
|
|
};
|
|
|
|
meta = {
|
|
doc = ./davis.md;
|
|
maintainers = pkgs.davis.meta.maintainers;
|
|
};
|
|
}
|