nixpkgs-suyu/nixos/modules/services/misc/taskserver/default.nix
pennae 0a6e6cf7e6 nixos/manual: render module chapters with nixos-render-docs
this converts meta.doc into an md pointer, not an xml pointer. since we
no longer need xml for manual chapters we can also remove support for
manual chapters from md-to-db.sh

since pandoc converts smart quotes to docbook quote elements and our
nixos-render-docs does not we lose this distinction in the rendered
output. that's probably not that bad, our stylesheet didn't make use of
this anyway (and pre-23.05 versions of the chapters didn't use quote
elements either).

also updates the nixpkgs manual to clarify that option docs support all
extensions (although it doesn't support headings at all, so heading
anchors don't work by extension).
2023-01-27 20:07:34 +01:00

570 lines
17 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.taskserver;
taskd = "${pkgs.taskserver}/bin/taskd";
mkManualPkiOption = desc: mkOption {
type = types.nullOr types.path;
default = null;
description = lib.mdDoc ''
${desc}
::: {.note}
Setting this option will prevent automatic CA creation and handling.
:::
'';
};
manualPkiOptions = {
ca.cert = mkManualPkiOption ''
Fully qualified path to the CA certificate.
'';
server.cert = mkManualPkiOption ''
Fully qualified path to the server certificate.
'';
server.crl = mkManualPkiOption ''
Fully qualified path to the server certificate revocation list.
'';
server.key = mkManualPkiOption ''
Fully qualified path to the server key.
'';
};
mkAutoDesc = preamble: lib.mdDoc ''
${preamble}
::: {.note}
This option is for the automatically handled CA and will be ignored if any
of the {option}`services.taskserver.pki.manual.*` options are set.
:::
'';
mkExpireOption = desc: mkOption {
type = types.nullOr types.int;
default = null;
example = 365;
apply = val: if val == null then -1 else val;
description = mkAutoDesc ''
The expiration time of ${desc} in days or `null` for no
expiration time.
'';
};
autoPkiOptions = {
bits = mkOption {
type = types.int;
default = 4096;
example = 2048;
description = mkAutoDesc "The bit size for generated keys.";
};
expiration = {
ca = mkExpireOption "the CA certificate";
server = mkExpireOption "the server certificate";
client = mkExpireOption "client certificates";
crl = mkExpireOption "the certificate revocation list (CRL)";
};
};
needToCreateCA = let
notFound = path: let
dotted = concatStringsSep "." path;
in throw "Can't find option definitions for path `${dotted}'.";
findPkiDefinitions = path: attrs: let
mkSublist = key: val: let
newPath = path ++ singleton key;
in if isOption val
then attrByPath newPath (notFound newPath) cfg.pki.manual
else findPkiDefinitions newPath val;
in flatten (mapAttrsToList mkSublist attrs);
in all (x: x == null) (findPkiDefinitions [] manualPkiOptions);
orgOptions = { ... }: {
options.users = mkOption {
type = types.uniq (types.listOf types.str);
default = [];
example = [ "alice" "bob" ];
description = lib.mdDoc ''
A list of user names that belong to the organization.
'';
};
options.groups = mkOption {
type = types.listOf types.str;
default = [];
example = [ "workers" "slackers" ];
description = lib.mdDoc ''
A list of group names that belong to the organization.
'';
};
};
certtool = "${pkgs.gnutls.bin}/bin/certtool";
nixos-taskserver = with pkgs.python3.pkgs; buildPythonApplication {
name = "nixos-taskserver";
src = pkgs.runCommand "nixos-taskserver-src" { preferLocalBuild = true; } ''
mkdir -p "$out"
cat "${pkgs.substituteAll {
src = ./helper-tool.py;
inherit taskd certtool;
inherit (cfg) dataDir user group fqdn;
certBits = cfg.pki.auto.bits;
clientExpiration = cfg.pki.auto.expiration.client;
crlExpiration = cfg.pki.auto.expiration.crl;
isAutoConfig = if needToCreateCA then "True" else "False";
}}" > "$out/main.py"
cat > "$out/setup.py" <<EOF
from setuptools import setup
setup(name="nixos-taskserver",
py_modules=["main"],
install_requires=["Click"],
entry_points="[console_scripts]\\nnixos-taskserver=main:cli")
EOF
'';
propagatedBuildInputs = [ click ];
};
in {
options = {
services.taskserver = {
enable = mkOption {
type = types.bool;
default = false;
description = let
url = "https://nixos.org/manual/nixos/stable/index.html#module-services-taskserver";
in lib.mdDoc ''
Whether to enable the Taskwarrior server.
More instructions about NixOS in conjunction with Taskserver can be
found [in the NixOS manual](${url}).
'';
};
user = mkOption {
type = types.str;
default = "taskd";
description = lib.mdDoc "User for Taskserver.";
};
group = mkOption {
type = types.str;
default = "taskd";
description = lib.mdDoc "Group for Taskserver.";
};
dataDir = mkOption {
type = types.path;
default = "/var/lib/taskserver";
description = lib.mdDoc "Data directory for Taskserver.";
};
ciphers = mkOption {
type = types.nullOr (types.separatedString ":");
default = null;
example = "NORMAL:-VERS-SSL3.0";
description = let
url = "https://gnutls.org/manual/html_node/Priority-Strings.html";
in lib.mdDoc ''
List of GnuTLS ciphers to use. See the GnuTLS documentation about
priority strings at <${url}> for full details.
'';
};
organisations = mkOption {
type = types.attrsOf (types.submodule orgOptions);
default = {};
example.myShinyOrganisation.users = [ "alice" "bob" ];
example.myShinyOrganisation.groups = [ "staff" "outsiders" ];
example.yetAnotherOrganisation.users = [ "foo" "bar" ];
description = lib.mdDoc ''
An attribute set where the keys name the organisation and the values
are a set of lists of {option}`users` and
{option}`groups`.
'';
};
confirmation = mkOption {
type = types.bool;
default = true;
description = lib.mdDoc ''
Determines whether certain commands are confirmed.
'';
};
debug = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc ''
Logs debugging information.
'';
};
extensions = mkOption {
type = types.nullOr types.path;
default = null;
description = lib.mdDoc ''
Fully qualified path of the Taskserver extension scripts.
Currently there are none.
'';
};
ipLog = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc ''
Logs the IP addresses of incoming requests.
'';
};
queueSize = mkOption {
type = types.int;
default = 10;
description = lib.mdDoc ''
Size of the connection backlog, see {manpage}`listen(2)`.
'';
};
requestLimit = mkOption {
type = types.int;
default = 1048576;
description = lib.mdDoc ''
Size limit of incoming requests, in bytes.
'';
};
allowedClientIDs = mkOption {
type = with types; either str (listOf str);
default = [];
example = [ "[Tt]ask [2-9]+" ];
description = lib.mdDoc ''
A list of regular expressions that are matched against the reported
client id (such as `task 2.3.0`).
The values `all` or `none` have
special meaning. Overridden by any entry in the option
{option}`services.taskserver.disallowedClientIDs`.
'';
};
disallowedClientIDs = mkOption {
type = with types; either str (listOf str);
default = [];
example = [ "[Tt]ask [2-9]+" ];
description = lib.mdDoc ''
A list of regular expressions that are matched against the reported
client id (such as `task 2.3.0`).
The values `all` or `none` have
special meaning. Any entry here overrides those in
{option}`services.taskserver.allowedClientIDs`.
'';
};
listenHost = mkOption {
type = types.str;
default = "localhost";
example = "::";
description = lib.mdDoc ''
The address (IPv4, IPv6 or DNS) to listen on.
'';
};
listenPort = mkOption {
type = types.int;
default = 53589;
description = lib.mdDoc ''
Port number of the Taskserver.
'';
};
openFirewall = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc ''
Whether to open the firewall for the specified Taskserver port.
'';
};
fqdn = mkOption {
type = types.str;
default = "localhost";
description = lib.mdDoc ''
The fully qualified domain name of this server, which is also used
as the common name in the certificates.
'';
};
trust = mkOption {
type = types.enum [ "allow all" "strict" ];
default = "strict";
description = lib.mdDoc ''
Determines how client certificates are validated.
The value `allow all` performs no client
certificate validation. This is not recommended. The value
`strict` causes the client certificate to be
validated against a CA.
'';
};
pki.manual = manualPkiOptions;
pki.auto = autoPkiOptions;
config = mkOption {
type = types.attrs;
example.client.cert = "/tmp/debugging.cert";
description = lib.mdDoc ''
Configuration options to pass to Taskserver.
The options here are the same as described in
{manpage}`taskdrc(5)`, but with one difference:
The `server` option is
`server.listen` here, because the
`server` option would collide with other options
like `server.cert` and we would run in a type error
(attribute set versus string).
Nix types like integers or booleans are automatically converted to
the right values Taskserver would expect.
'';
apply = let
mkKey = path: if path == ["server" "listen"] then "server"
else concatStringsSep "." path;
recurse = path: attrs: let
mapper = name: val: let
newPath = path ++ [ name ];
scalar = if val == true then "true"
else if val == false then "false"
else toString val;
in if isAttrs val then recurse newPath val
else [ "${mkKey newPath}=${scalar}" ];
in concatLists (mapAttrsToList mapper attrs);
in recurse [];
};
};
};
imports = [
(mkRemovedOptionModule ["services" "taskserver" "extraConfig"] ''
This option was removed in favor of `services.taskserver.config` with
different semantics (it's now a list of attributes instead of lines).
Please look up the documentation of `services.taskserver.config' to get
more information about the new way to pass additional configuration
options.
'')
];
config = mkMerge [
(mkIf cfg.enable {
environment.systemPackages = [ nixos-taskserver ];
users.users = optionalAttrs (cfg.user == "taskd") {
taskd = {
uid = config.ids.uids.taskd;
description = "Taskserver user";
group = cfg.group;
};
};
users.groups = optionalAttrs (cfg.group == "taskd") {
taskd.gid = config.ids.gids.taskd;
};
services.taskserver.config = {
# systemd related
daemon = false;
log = "-";
# logging
debug = cfg.debug;
ip.log = cfg.ipLog;
# general
ciphers = cfg.ciphers;
confirmation = cfg.confirmation;
extensions = cfg.extensions;
queue.size = cfg.queueSize;
request.limit = cfg.requestLimit;
# client
client.allow = cfg.allowedClientIDs;
client.deny = cfg.disallowedClientIDs;
# server
trust = cfg.trust;
server = {
listen = "${cfg.listenHost}:${toString cfg.listenPort}";
} // (if needToCreateCA then {
cert = "${cfg.dataDir}/keys/server.cert";
key = "${cfg.dataDir}/keys/server.key";
crl = "${cfg.dataDir}/keys/server.crl";
} else {
cert = "${cfg.pki.manual.server.cert}";
key = "${cfg.pki.manual.server.key}";
${mapNullable (_: "crl") cfg.pki.manual.server.crl} = "${cfg.pki.manual.server.crl}";
});
ca.cert = if needToCreateCA then "${cfg.dataDir}/keys/ca.cert"
else "${cfg.pki.manual.ca.cert}";
};
systemd.services.taskserver-init = {
wantedBy = [ "taskserver.service" ];
before = [ "taskserver.service" ];
description = "Initialize Taskserver Data Directory";
preStart = ''
mkdir -m 0770 -p "${cfg.dataDir}"
chown "${cfg.user}:${cfg.group}" "${cfg.dataDir}"
'';
script = ''
${taskd} init
touch "${cfg.dataDir}/.is_initialized"
'';
environment.TASKDDATA = cfg.dataDir;
unitConfig.ConditionPathExists = "!${cfg.dataDir}/.is_initialized";
serviceConfig.Type = "oneshot";
serviceConfig.User = cfg.user;
serviceConfig.Group = cfg.group;
serviceConfig.PermissionsStartOnly = true;
serviceConfig.PrivateNetwork = true;
serviceConfig.PrivateDevices = true;
serviceConfig.PrivateTmp = true;
};
systemd.services.taskserver = {
description = "Taskwarrior Server";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
environment.TASKDDATA = cfg.dataDir;
preStart = let
jsonOrgs = builtins.toJSON cfg.organisations;
jsonFile = pkgs.writeText "orgs.json" jsonOrgs;
helperTool = "${nixos-taskserver}/bin/nixos-taskserver";
in "${helperTool} process-json '${jsonFile}'";
serviceConfig = {
ExecStart = let
mkCfgFlag = flag: escapeShellArg "--${flag}";
cfgFlags = concatMapStringsSep " " mkCfgFlag cfg.config;
in "@${taskd} taskd server ${cfgFlags}";
ExecReload = "${pkgs.coreutils}/bin/kill -USR1 $MAINPID";
Restart = "on-failure";
PermissionsStartOnly = true;
PrivateTmp = true;
PrivateDevices = true;
User = cfg.user;
Group = cfg.group;
};
};
})
(mkIf (cfg.enable && needToCreateCA) {
systemd.services.taskserver-ca = {
wantedBy = [ "taskserver.service" ];
after = [ "taskserver-init.service" ];
before = [ "taskserver.service" ];
description = "Initialize CA for TaskServer";
serviceConfig.Type = "oneshot";
serviceConfig.UMask = "0077";
serviceConfig.PrivateNetwork = true;
serviceConfig.PrivateTmp = true;
script = ''
silent_certtool() {
if ! output="$("${certtool}" "$@" 2>&1)"; then
echo "GNUTLS certtool invocation failed with output:" >&2
echo "$output" >&2
fi
}
mkdir -m 0700 -p "${cfg.dataDir}/keys"
chown root:root "${cfg.dataDir}/keys"
if [ ! -e "${cfg.dataDir}/keys/ca.key" ]; then
silent_certtool -p \
--bits ${toString cfg.pki.auto.bits} \
--outfile "${cfg.dataDir}/keys/ca.key"
silent_certtool -s \
--template "${pkgs.writeText "taskserver-ca.template" ''
cn = ${cfg.fqdn}
expiration_days = ${toString cfg.pki.auto.expiration.ca}
cert_signing_key
ca
''}" \
--load-privkey "${cfg.dataDir}/keys/ca.key" \
--outfile "${cfg.dataDir}/keys/ca.cert"
chgrp "${cfg.group}" "${cfg.dataDir}/keys/ca.cert"
chmod g+r "${cfg.dataDir}/keys/ca.cert"
fi
if [ ! -e "${cfg.dataDir}/keys/server.key" ]; then
silent_certtool -p \
--bits ${toString cfg.pki.auto.bits} \
--outfile "${cfg.dataDir}/keys/server.key"
silent_certtool -c \
--template "${pkgs.writeText "taskserver-cert.template" ''
cn = ${cfg.fqdn}
expiration_days = ${toString cfg.pki.auto.expiration.server}
tls_www_server
encryption_key
signing_key
''}" \
--load-ca-privkey "${cfg.dataDir}/keys/ca.key" \
--load-ca-certificate "${cfg.dataDir}/keys/ca.cert" \
--load-privkey "${cfg.dataDir}/keys/server.key" \
--outfile "${cfg.dataDir}/keys/server.cert"
chgrp "${cfg.group}" \
"${cfg.dataDir}/keys/server.key" \
"${cfg.dataDir}/keys/server.cert"
chmod g+r \
"${cfg.dataDir}/keys/server.key" \
"${cfg.dataDir}/keys/server.cert"
fi
if [ ! -e "${cfg.dataDir}/keys/server.crl" ]; then
silent_certtool --generate-crl \
--template "${pkgs.writeText "taskserver-crl.template" ''
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.openFirewall) {
networking.firewall.allowedTCPPorts = [ cfg.listenPort ];
})
];
meta.doc = ./default.md;
}