568 lines
18 KiB
Nix
568 lines
18 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.taskserver;
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taskd = "${pkgs.taskserver}/bin/taskd";
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mkManualPkiOption = desc: mkOption {
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type = types.nullOr types.path;
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default = null;
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description = desc + ''
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<note><para>
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Setting this option will prevent automatic CA creation and handling.
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</para></note>
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'';
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};
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manualPkiOptions = {
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ca.cert = mkManualPkiOption ''
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Fully qualified path to the CA certificate.
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'';
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server.cert = mkManualPkiOption ''
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Fully qualified path to the server certificate.
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'';
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server.crl = mkManualPkiOption ''
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Fully qualified path to the server certificate revocation list.
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'';
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server.key = mkManualPkiOption ''
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Fully qualified path to the server key.
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'';
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};
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mkAutoDesc = preamble: ''
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${preamble}
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<note><para>
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This option is for the automatically handled CA and will be ignored if any
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of the <option>services.taskserver.pki.manual.*</option> options are set.
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</para></note>
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'';
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mkExpireOption = desc: mkOption {
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type = types.nullOr types.int;
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default = null;
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example = 365;
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apply = val: if val == null then -1 else val;
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description = mkAutoDesc ''
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The expiration time of ${desc} in days or <literal>null</literal> for no
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expiration time.
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'';
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};
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autoPkiOptions = {
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bits = mkOption {
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type = types.int;
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default = 4096;
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example = 2048;
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description = mkAutoDesc "The bit size for generated keys.";
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};
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expiration = {
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ca = mkExpireOption "the CA certificate";
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server = mkExpireOption "the server certificate";
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client = mkExpireOption "client certificates";
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crl = mkExpireOption "the certificate revocation list (CRL)";
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};
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};
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needToCreateCA = let
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notFound = path: let
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dotted = concatStringsSep "." path;
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in throw "Can't find option definitions for path `${dotted}'.";
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findPkiDefinitions = path: attrs: let
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mkSublist = key: val: let
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newPath = path ++ singleton key;
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in if isOption val
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then attrByPath newPath (notFound newPath) cfg.pki.manual
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else findPkiDefinitions newPath val;
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in flatten (mapAttrsToList mkSublist attrs);
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in all (x: x == null) (findPkiDefinitions [] manualPkiOptions);
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orgOptions = { ... }: {
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options.users = mkOption {
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type = types.uniq (types.listOf types.str);
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default = [];
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example = [ "alice" "bob" ];
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description = ''
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A list of user names that belong to the organization.
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'';
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};
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options.groups = mkOption {
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type = types.listOf types.str;
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default = [];
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example = [ "workers" "slackers" ];
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description = ''
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A list of group names that belong to the organization.
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'';
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};
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};
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certtool = "${pkgs.gnutls.bin}/bin/certtool";
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nixos-taskserver = pkgs.pythonPackages.buildPythonApplication {
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name = "nixos-taskserver";
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src = pkgs.runCommand "nixos-taskserver-src" { preferLocalBuild = true; } ''
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mkdir -p "$out"
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cat "${pkgs.substituteAll {
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src = ./helper-tool.py;
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inherit taskd certtool;
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inherit (cfg) dataDir user group fqdn;
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certBits = cfg.pki.auto.bits;
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clientExpiration = cfg.pki.auto.expiration.client;
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crlExpiration = cfg.pki.auto.expiration.crl;
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isAutoConfig = if needToCreateCA then "True" else "False";
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}}" > "$out/main.py"
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cat > "$out/setup.py" <<EOF
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from setuptools import setup
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setup(name="nixos-taskserver",
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py_modules=["main"],
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install_requires=["Click"],
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entry_points="[console_scripts]\\nnixos-taskserver=main:cli")
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EOF
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'';
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propagatedBuildInputs = [ pkgs.pythonPackages.click ];
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};
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in {
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options = {
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services.taskserver = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to enable the Taskwarrior server.
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More instructions about NixOS in conjuction with Taskserver can be
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found in the NixOS manual at
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<olink targetdoc="manual" targetptr="module-taskserver"/>.
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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 = "taskd";
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description = "User for Taskserver.";
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};
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group = mkOption {
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type = types.str;
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default = "taskd";
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description = "Group for Taskserver.";
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};
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dataDir = mkOption {
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type = types.path;
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default = "/var/lib/taskserver";
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description = "Data directory for Taskserver.";
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};
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ciphers = mkOption {
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type = types.nullOr (types.separatedString ":");
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default = null;
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example = "NORMAL:-VERS-SSL3.0";
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description = let
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url = "https://gnutls.org/manual/html_node/Priority-Strings.html";
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in ''
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List of GnuTLS ciphers to use. See the GnuTLS documentation about
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priority strings at <link xlink:href="${url}"/> for full details.
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'';
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};
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organisations = mkOption {
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type = types.attrsOf (types.submodule orgOptions);
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default = {};
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example.myShinyOrganisation.users = [ "alice" "bob" ];
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example.myShinyOrganisation.groups = [ "staff" "outsiders" ];
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example.yetAnotherOrganisation.users = [ "foo" "bar" ];
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description = ''
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An attribute set where the keys name the organisation and the values
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are a set of lists of <option>users</option> and
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<option>groups</option>.
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'';
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};
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confirmation = mkOption {
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type = types.bool;
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default = true;
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description = ''
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Determines whether certain commands are confirmed.
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'';
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};
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debug = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Logs debugging information.
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'';
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};
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extensions = mkOption {
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type = types.nullOr types.path;
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default = null;
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description = ''
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Fully qualified path of the Taskserver extension scripts.
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Currently there are none.
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'';
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};
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ipLog = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Logs the IP addresses of incoming requests.
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'';
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};
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queueSize = mkOption {
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type = types.int;
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default = 10;
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description = ''
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Size of the connection backlog, see <citerefentry>
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<refentrytitle>listen</refentrytitle>
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<manvolnum>2</manvolnum>
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</citerefentry>.
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'';
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};
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requestLimit = mkOption {
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type = types.int;
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default = 1048576;
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description = ''
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Size limit of incoming requests, in bytes.
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'';
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};
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allowedClientIDs = mkOption {
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type = with types; either str (listOf str);
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default = [];
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example = [ "[Tt]ask [2-9]+" ];
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description = ''
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A list of regular expressions that are matched against the reported
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client id (such as <literal>task 2.3.0</literal>).
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The values <literal>all</literal> or <literal>none</literal> have
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special meaning. Overidden by any entry in the option
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<option>services.taskserver.disallowedClientIDs</option>.
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'';
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};
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disallowedClientIDs = mkOption {
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type = with types; either str (listOf str);
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default = [];
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example = [ "[Tt]ask [2-9]+" ];
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description = ''
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A list of regular expressions that are matched against the reported
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client id (such as <literal>task 2.3.0</literal>).
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The values <literal>all</literal> or <literal>none</literal> have
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special meaning. Any entry here overrides those in
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<option>services.taskserver.allowedClientIDs</option>.
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'';
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};
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listenHost = mkOption {
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type = types.str;
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default = "localhost";
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example = "::";
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description = ''
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The address (IPv4, IPv6 or DNS) to listen on.
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If the value is something else than <literal>localhost</literal> the
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port defined by <option>listenPort</option> is automatically added to
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<option>networking.firewall.allowedTCPPorts</option>.
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'';
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};
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listenPort = mkOption {
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type = types.int;
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default = 53589;
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description = ''
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Port number of the Taskserver.
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'';
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};
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fqdn = mkOption {
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type = types.str;
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default = "localhost";
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description = ''
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The fully qualified domain name of this server, which is also used
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as the common name in the certificates.
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'';
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};
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trust = mkOption {
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type = types.enum [ "allow all" "strict" ];
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default = "strict";
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description = ''
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Determines how client certificates are validated.
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The value <literal>allow all</literal> performs no client
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certificate validation. This is not recommended. The value
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<literal>strict</literal> causes the client certificate to be
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validated against a CA.
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'';
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};
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pki.manual = manualPkiOptions;
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pki.auto = autoPkiOptions;
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config = mkOption {
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type = types.attrs;
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example.client.cert = "/tmp/debugging.cert";
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description = ''
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Configuration options to pass to Taskserver.
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The options here are the same as described in <citerefentry>
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<refentrytitle>taskdrc</refentrytitle>
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<manvolnum>5</manvolnum>
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</citerefentry>, but with one difference:
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The <literal>server</literal> option is
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<literal>server.listen</literal> here, because the
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<literal>server</literal> option would collide with other options
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like <literal>server.cert</literal> and we would run in a type error
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(attribute set versus string).
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Nix types like integers or booleans are automatically converted to
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the right values Taskserver would expect.
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'';
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apply = let
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mkKey = path: if path == ["server" "listen"] then "server"
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else concatStringsSep "." path;
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recurse = path: attrs: let
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mapper = name: val: let
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newPath = path ++ [ name ];
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scalar = if val == true then "true"
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else if val == false then "false"
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else toString val;
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in if isAttrs val then recurse newPath val
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else [ "${mkKey newPath}=${scalar}" ];
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in concatLists (mapAttrsToList mapper attrs);
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in recurse [];
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};
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};
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};
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imports = [
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(mkRemovedOptionModule ["services" "taskserver" "extraConfig"] ''
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This option was removed in favor of `services.taskserver.config` with
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different semantics (it's now a list of attributes instead of lines).
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Please look up the documentation of `services.taskserver.config' to get
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more information about the new way to pass additional configuration
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options.
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'')
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];
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config = mkMerge [
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(mkIf cfg.enable {
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environment.systemPackages = [ nixos-taskserver ];
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users.users = optionalAttrs (cfg.user == "taskd") {
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taskd = {
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uid = config.ids.uids.taskd;
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description = "Taskserver user";
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group = cfg.group;
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};
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};
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users.groups = optionalAttrs (cfg.group == "taskd") {
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taskd.gid = config.ids.gids.taskd;
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};
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services.taskserver.config = {
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# systemd related
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daemon = false;
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log = "-";
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# logging
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debug = cfg.debug;
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ip.log = cfg.ipLog;
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# general
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ciphers = cfg.ciphers;
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confirmation = cfg.confirmation;
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extensions = cfg.extensions;
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queue.size = cfg.queueSize;
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request.limit = cfg.requestLimit;
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# client
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client.allow = cfg.allowedClientIDs;
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client.deny = cfg.disallowedClientIDs;
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# server
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trust = cfg.trust;
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server = {
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listen = "${cfg.listenHost}:${toString cfg.listenPort}";
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} // (if needToCreateCA then {
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cert = "${cfg.dataDir}/keys/server.cert";
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key = "${cfg.dataDir}/keys/server.key";
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crl = "${cfg.dataDir}/keys/server.crl";
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} else {
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cert = "${cfg.pki.manual.server.cert}";
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key = "${cfg.pki.manual.server.key}";
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${mapNullable (_: "crl") cfg.pki.manual.server.crl} = "${cfg.pki.manual.server.crl}";
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});
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ca.cert = if needToCreateCA then "${cfg.dataDir}/keys/ca.cert"
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else "${cfg.pki.manual.ca.cert}";
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};
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systemd.services.taskserver-init = {
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wantedBy = [ "taskserver.service" ];
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before = [ "taskserver.service" ];
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description = "Initialize Taskserver Data Directory";
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preStart = ''
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mkdir -m 0770 -p "${cfg.dataDir}"
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chown "${cfg.user}:${cfg.group}" "${cfg.dataDir}"
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'';
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script = ''
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${taskd} init
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touch "${cfg.dataDir}/.is_initialized"
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'';
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environment.TASKDDATA = cfg.dataDir;
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unitConfig.ConditionPathExists = "!${cfg.dataDir}/.is_initialized";
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serviceConfig.Type = "oneshot";
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serviceConfig.User = cfg.user;
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serviceConfig.Group = cfg.group;
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serviceConfig.PermissionsStartOnly = true;
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serviceConfig.PrivateNetwork = true;
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serviceConfig.PrivateDevices = true;
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serviceConfig.PrivateTmp = true;
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};
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systemd.services.taskserver = {
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description = "Taskwarrior Server";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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environment.TASKDDATA = cfg.dataDir;
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preStart = let
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jsonOrgs = builtins.toJSON cfg.organisations;
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jsonFile = pkgs.writeText "orgs.json" jsonOrgs;
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helperTool = "${nixos-taskserver}/bin/nixos-taskserver";
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in "${helperTool} process-json '${jsonFile}'";
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serviceConfig = {
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ExecStart = let
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mkCfgFlag = flag: escapeShellArg "--${flag}";
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cfgFlags = concatMapStringsSep " " mkCfgFlag cfg.config;
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in "@${taskd} taskd server ${cfgFlags}";
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ExecReload = "${pkgs.coreutils}/bin/kill -USR1 $MAINPID";
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Restart = "on-failure";
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PermissionsStartOnly = true;
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PrivateTmp = true;
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PrivateDevices = true;
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User = cfg.user;
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Group = cfg.group;
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};
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};
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})
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(mkIf (cfg.enable && needToCreateCA) {
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systemd.services.taskserver-ca = {
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wantedBy = [ "taskserver.service" ];
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after = [ "taskserver-init.service" ];
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before = [ "taskserver.service" ];
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description = "Initialize CA for TaskServer";
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serviceConfig.Type = "oneshot";
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serviceConfig.UMask = "0077";
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serviceConfig.PrivateNetwork = true;
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serviceConfig.PrivateTmp = true;
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script = ''
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silent_certtool() {
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if ! output="$("${certtool}" "$@" 2>&1)"; then
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echo "GNUTLS certtool invocation failed with output:" >&2
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echo "$output" >&2
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fi
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}
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mkdir -m 0700 -p "${cfg.dataDir}/keys"
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chown root:root "${cfg.dataDir}/keys"
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if [ ! -e "${cfg.dataDir}/keys/ca.key" ]; then
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silent_certtool -p \
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--bits ${toString cfg.pki.auto.bits} \
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--outfile "${cfg.dataDir}/keys/ca.key"
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silent_certtool -s \
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--template "${pkgs.writeText "taskserver-ca.template" ''
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cn = ${cfg.fqdn}
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expiration_days = ${toString cfg.pki.auto.expiration.ca}
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cert_signing_key
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ca
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''}" \
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--load-privkey "${cfg.dataDir}/keys/ca.key" \
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--outfile "${cfg.dataDir}/keys/ca.cert"
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chgrp "${cfg.group}" "${cfg.dataDir}/keys/ca.cert"
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chmod g+r "${cfg.dataDir}/keys/ca.cert"
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fi
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if [ ! -e "${cfg.dataDir}/keys/server.key" ]; then
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silent_certtool -p \
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--bits ${toString cfg.pki.auto.bits} \
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--outfile "${cfg.dataDir}/keys/server.key"
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silent_certtool -c \
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--template "${pkgs.writeText "taskserver-cert.template" ''
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cn = ${cfg.fqdn}
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expiration_days = ${toString cfg.pki.auto.expiration.server}
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tls_www_server
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encryption_key
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signing_key
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''}" \
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--load-ca-privkey "${cfg.dataDir}/keys/ca.key" \
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--load-ca-certificate "${cfg.dataDir}/keys/ca.cert" \
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--load-privkey "${cfg.dataDir}/keys/server.key" \
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--outfile "${cfg.dataDir}/keys/server.cert"
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chgrp "${cfg.group}" \
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"${cfg.dataDir}/keys/server.key" \
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"${cfg.dataDir}/keys/server.cert"
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chmod g+r \
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"${cfg.dataDir}/keys/server.key" \
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"${cfg.dataDir}/keys/server.cert"
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fi
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if [ ! -e "${cfg.dataDir}/keys/server.crl" ]; then
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silent_certtool --generate-crl \
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--template "${pkgs.writeText "taskserver-crl.template" ''
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expiration_days = ${toString cfg.pki.auto.expiration.crl}
|
|
''}" \
|
|
--load-ca-privkey "${cfg.dataDir}/keys/ca.key" \
|
|
--load-ca-certificate "${cfg.dataDir}/keys/ca.cert" \
|
|
--outfile "${cfg.dataDir}/keys/server.crl"
|
|
|
|
chgrp "${cfg.group}" "${cfg.dataDir}/keys/server.crl"
|
|
chmod g+r "${cfg.dataDir}/keys/server.crl"
|
|
fi
|
|
|
|
chmod go+x "${cfg.dataDir}/keys"
|
|
'';
|
|
};
|
|
})
|
|
(mkIf (cfg.enable && cfg.listenHost != "localhost") {
|
|
networking.firewall.allowedTCPPorts = [ cfg.listenPort ];
|
|
})
|
|
];
|
|
|
|
meta.doc = ./doc.xml;
|
|
}
|