nixpkgs/nixos/modules/services/misc/taskserver/default.nix
aszlig ce0954020c
nixos/taskserver: Set allowedTCPPorts accordingly
As suggested by @matthiasbeyer:

"We might add a short note that this port has to be opened in the
firewall, or is this done by the service automatically?"

This commit now adds the listenPort to
networking.firewall.allowedTCPPorts as soon as the listenHost is not
"localhost".

In addition to that, this is now also documented in the listenHost
option declaration and I have removed disabling of the firewall from the
VM test.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
2016-04-12 05:16:15 +02:00

533 lines
16 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.taskserver;
taskd = "${pkgs.taskserver}/bin/taskd";
mkVal = val:
if val == true then "true"
else if val == false then "false"
else if isList val then concatStringsSep ", " val
else toString val;
mkConfLine = key: val: let
result = "${key} = ${mkVal val}";
in optionalString (val != null && val != []) result;
mkManualPkiOption = desc: mkOption {
type = types.nullOr types.path;
default = null;
description = desc + ''
<note><para>
Setting this option will prevent automatic CA creation and handling.
</para></note>
'';
};
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: ''
${preamble}
<note><para>
This option is for the automatically handled CA and will be ignored if any
of the <option>services.taskserver.pki.manual.*</option> options are set.
</para></note>
'';
mkExpireOption = desc: mkOption {
type = types.nullOr types.int;
default = null;
example = 365;
apply = val: if isNull val then -1 else val;
description = mkAutoDesc ''
The expiration time of ${desc} in days or <literal>null</literal> for no
expiration time.
'';
};
autoPkiOptions = {
bits = mkOption {
type = types.int;
default = 4096;
example = 2048;
description = mkAutoDesc "The bit size for generated keys.";
};
expiration = {
ca = mkExpireOption "the CA certificate";
server = mkExpireOption "the server certificate";
client = mkExpireOption "client certificates";
crl = mkExpireOption "the certificate revocation list (CRL)";
};
};
needToCreateCA = let
notFound = path: let
dotted = concatStringsSep "." path;
in throw "Can't find option definitions for path `${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 isNull (findPkiDefinitions [] manualPkiOptions);
configFile = pkgs.writeText "taskdrc" (''
# systemd related
daemon = false
log = -
# logging
${mkConfLine "debug" cfg.debug}
${mkConfLine "ip.log" cfg.ipLog}
# general
${mkConfLine "ciphers" cfg.ciphers}
${mkConfLine "confirmation" cfg.confirmation}
${mkConfLine "extensions" cfg.extensions}
${mkConfLine "queue.size" cfg.queueSize}
${mkConfLine "request.limit" cfg.requestLimit}
# client
${mkConfLine "client.allow" cfg.allowedClientIDs}
${mkConfLine "client.deny" cfg.disallowedClientIDs}
# server
server = ${cfg.listenHost}:${toString cfg.listenPort}
${mkConfLine "trust" cfg.trust}
# PKI options
${if needToCreateCA then ''
ca.cert = ${cfg.dataDir}/keys/ca.cert
server.cert = ${cfg.dataDir}/keys/server.cert
server.key = ${cfg.dataDir}/keys/server.key
server.crl = ${cfg.dataDir}/keys/server.crl
'' else ''
ca.cert = ${cfg.pki.ca.cert}
server.cert = ${cfg.pki.server.cert}
server.key = ${cfg.pki.server.key}
server.crl = ${cfg.pki.server.crl}
''}
'' + cfg.extraConfig);
orgOptions = { name, ... }: {
options.users = mkOption {
type = types.uniq (types.listOf types.str);
default = [];
example = [ "alice" "bob" ];
description = ''
A list of user names that belong to the organization.
'';
};
options.groups = mkOption {
type = types.listOf types.str;
default = [];
example = [ "workers" "slackers" ];
description = ''
A list of group names that belong to the organization.
'';
};
};
mkShellStr = val: "'${replaceStrings ["'"] ["'\\''"] val}'";
certtool = "${pkgs.gnutls}/bin/certtool";
nixos-taskserver = pkgs.buildPythonPackage {
name = "nixos-taskserver";
namePrefix = "";
src = pkgs.runCommand "nixos-taskserver-src" {} ''
mkdir -p "$out"
cat "${pkgs.substituteAll {
src = ./helper-tool.py;
inherit taskd certtool;
inherit (cfg) dataDir user group fqdn;
certBits = cfg.pki.auto.bits;
clientExpiration = cfg.pki.auto.expiration.client;
crlExpiration = cfg.pki.auto.expiration.crl;
}}" > "$out/main.py"
cat > "$out/setup.py" <<EOF
from setuptools import setup
setup(name="nixos-taskserver",
py_modules=["main"],
install_requires=["Click"],
entry_points="[console_scripts]\\nnixos-taskserver=main:cli")
EOF
'';
propagatedBuildInputs = [ pkgs.pythonPackages.click ];
};
in {
options = {
services.taskserver = {
enable = mkOption {
type = types.bool;
default = false;
example = true;
description = ''
Whether to enable the Taskwarrior server.
More instructions about NixOS in conjuction with Taskserver can be
found in the NixOS manual at
<olink targetdoc="manual" targetptr="module-taskserver"/>.
'';
};
user = mkOption {
type = types.str;
default = "taskd";
description = "User for Taskserver.";
};
group = mkOption {
type = types.str;
default = "taskd";
description = "Group for Taskserver.";
};
dataDir = mkOption {
type = types.path;
default = "/var/lib/taskserver";
description = "Data directory for Taskserver.";
};
ciphers = mkOption {
type = types.nullOr (types.separatedString ":");
default = null;
example = "NORMAL:-VERS-SSL3.0";
description = let
url = "https://gnutls.org/manual/html_node/Priority-Strings.html";
in ''
List of GnuTLS ciphers to use. See the GnuTLS documentation about
priority strings at <link xlink:href="${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 = ''
An attribute set where the keys name the organisation and the values
are a set of lists of <option>users</option> and
<option>groups</option>.
'';
};
confirmation = mkOption {
type = types.bool;
default = true;
description = ''
Determines whether certain commands are confirmed.
'';
};
debug = mkOption {
type = types.bool;
default = false;
description = ''
Logs debugging information.
'';
};
extensions = mkOption {
type = types.nullOr types.path;
default = null;
description = ''
Fully qualified path of the Taskserver extension scripts.
Currently there are none.
'';
};
ipLog = mkOption {
type = types.bool;
default = false;
description = ''
Logs the IP addresses of incoming requests.
'';
};
queueSize = mkOption {
type = types.int;
default = 10;
description = ''
Size of the connection backlog, see <citerefentry>
<refentrytitle>listen</refentrytitle>
<manvolnum>2</manvolnum>
</citerefentry>.
'';
};
requestLimit = mkOption {
type = types.int;
default = 1048576;
description = ''
Size limit of incoming requests, in bytes.
'';
};
allowedClientIDs = mkOption {
type = with types; loeOf (either (enum ["all" "none"]) str);
default = [];
example = [ "[Tt]ask [2-9]+" ];
description = ''
A list of regular expressions that are matched against the reported
client id (such as <literal>task 2.3.0</literal>).
The values <literal>all</literal> or <literal>none</literal> have
special meaning. Overidden by any entry in the option
<option>services.taskserver.client.deny</option>.
'';
};
disallowedClientIDs = mkOption {
type = with types; loeOf (either (enum ["all" "none"]) str);
default = [];
example = [ "[Tt]ask [2-9]+" ];
description = ''
A list of regular expressions that are matched against the reported
client id (such as <literal>task 2.3.0</literal>).
The values <literal>all</literal> or <literal>none</literal> have
special meaning. Any entry here overrides these in
<option>services.taskserver.client.allow</option>.
'';
};
listenHost = mkOption {
type = types.str;
default = "localhost";
example = "::";
description = ''
The address (IPv4, IPv6 or DNS) to listen on.
If the value is something else than <literal>localhost</literal> the
port defined by <option>listenPort</option> is automatically added to
<option>networking.firewall.allowedTCPPorts</option>.
'';
};
listenPort = mkOption {
type = types.int;
default = 53589;
description = ''
Port number of the Taskserver.
'';
};
fqdn = mkOption {
type = types.str;
default = "localhost";
description = ''
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 = ''
Determines how client certificates are validated.
The value <literal>allow all</literal> performs no client
certificate validation. This is not recommended. The value
<literal>strict</literal> causes the client certificate to be
validated against a CA.
'';
};
pki.manual = manualPkiOptions;
pki.auto = autoPkiOptions;
extraConfig = mkOption {
type = types.lines;
default = "";
example = "client.cert = /tmp/debugging.cert";
description = ''
Extra lines to append to the taskdrc configuration file.
'';
};
};
};
config = mkMerge [
(mkIf cfg.enable {
environment.systemPackages = [ pkgs.taskserver nixos-taskserver ];
users.users = optional (cfg.user == "taskd") {
name = "taskd";
uid = config.ids.uids.taskd;
description = "Taskserver user";
group = cfg.group;
};
users.groups = optional (cfg.group == "taskd") {
name = "taskd";
gid = config.ids.gids.taskd;
};
systemd.services.taskserver-init = {
requiredBy = [ "taskserver.service" ];
description = "Initialize Taskserver Data Directory";
preStart = ''
mkdir -m 0770 -p "${cfg.dataDir}"
chown "${cfg.user}:${cfg.group}" "${cfg.dataDir}"
'';
script = ''
${taskd} init
echo "include ${configFile}" > "${cfg.dataDir}/config"
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;
};
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 '${jsonFile}'";
serviceConfig = {
ExecStart = "@${taskd} taskd server";
ExecReload = "${pkgs.coreutils}/bin/kill -USR1 $MAINPID";
PermissionsStartOnly = true;
User = cfg.user;
Group = cfg.group;
};
};
})
(mkIf needToCreateCA {
systemd.services.taskserver-ca = {
requiredBy = [ "taskserver.service" ];
after = [ "taskserver-init.service" ];
before = [ "taskserver.service" ];
description = "Initialize CA for TaskServer";
serviceConfig.Type = "oneshot";
serviceConfig.UMask = "0077";
script = ''
silent_certtool() {
if ! output="$("${certtool}" "$@" 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.listenHost != "localhost") {
networking.firewall.allowedTCPPorts = [ cfg.listenPort ];
})
{ meta.doc = ./taskserver.xml; }
];
}