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|
{ config, lib, pkgs, ... }:
# TODO: This is not secure, have a look at the file docs/security.txt inside
# the project sources.
with lib;
let
cfg = config.power.ups;
defaultPort = 3493;
nutFormat = {
type = with lib.types; let
singleAtom = nullOr (oneOf [
bool
int
float
str
]) // {
description = "atom (null, bool, int, float or string)";
};
in attrsOf (oneOf [
singleAtom
(listOf (nonEmptyListOf singleAtom))
]);
generate = name: value:
let
normalizedValue =
lib.mapAttrs (key: val:
if lib.isList val
then forEach val (elem: if lib.isList elem then elem else [elem])
else
if val == null
then []
else [[val]]
) value;
mkValueString = concatMapStringsSep " " (v:
let str = generators.mkValueStringDefault {} v;
in
# Quote the value if it has spaces and isn't already quoted.
if (hasInfix " " str) && !(hasPrefix "\"" str && hasSuffix "\"" str)
then "\"${str}\""
else str
);
in pkgs.writeText name (lib.generators.toKeyValue {
mkKeyValue = generators.mkKeyValueDefault { inherit mkValueString; } " ";
listsAsDuplicateKeys = true;
} normalizedValue);
};
installSecrets = source: target: secrets:
pkgs.writeShellScript "installSecrets.sh" ''
install -m0600 -D ${source} "${target}"
${concatLines (forEach secrets (name: ''
${pkgs.replace-secret}/bin/replace-secret \
'@${name}@' \
"$CREDENTIALS_DIRECTORY/${name}" \
"${target}"
''))}
chmod u-w "${target}"
'';
upsmonConf = nutFormat.generate "upsmon.conf" cfg.upsmon.settings;
upsdUsers = pkgs.writeText "upsd.users" (let
# This looks like INI, but it's not quite because the
# 'upsmon' option lacks a '='. See: man upsd.users
userConfig = name: user: concatStringsSep "\n " (concatLists [
[
"[${name}]"
"password = \"@upsdusers_password_${name}@\""
]
(optional (user.upsmon != null) "upsmon ${user.upsmon}")
(forEach user.actions (action: "actions = ${action}"))
(forEach user.instcmds (instcmd: "instcmds = ${instcmd}"))
]);
in concatStringsSep "\n\n" (mapAttrsToList userConfig cfg.users));
upsOptions = {name, config, ...}:
{
options = {
# This can be inferred from the UPS model by looking at
# /nix/store/nut/share/driver.list
driver = mkOption {
type = types.str;
description = ''
Specify the program to run to talk to this UPS. apcsmart,
bestups, and sec are some examples.
'';
};
port = mkOption {
type = types.str;
description = ''
The serial port to which your UPS is connected. /dev/ttyS0 is
usually the first port on Linux boxes, for example.
'';
};
shutdownOrder = mkOption {
default = 0;
type = types.int;
description = ''
When you have multiple UPSes on your system, you usually need to
turn them off in a certain order. upsdrvctl shuts down all the
0s, then the 1s, 2s, and so on. To exclude a UPS from the
shutdown sequence, set this to -1.
'';
};
maxStartDelay = mkOption {
default = null;
type = types.uniq (types.nullOr types.int);
description = ''
This can be set as a global variable above your first UPS
definition and it can also be set in a UPS section. This value
controls how long upsdrvctl will wait for the driver to finish
starting. This keeps your system from getting stuck due to a
broken driver or UPS.
'';
};
description = mkOption {
default = "";
type = types.str;
description = ''
Description of the UPS.
'';
};
directives = mkOption {
default = [];
type = types.listOf types.str;
description = ''
List of configuration directives for this UPS.
'';
};
summary = mkOption {
default = "";
type = types.lines;
description = ''
Lines which would be added inside ups.conf for handling this UPS.
'';
};
};
config = {
directives = mkOrder 10 ([
"driver = ${config.driver}"
"port = ${config.port}"
''desc = "${config.description}"''
"sdorder = ${toString config.shutdownOrder}"
] ++ (optional (config.maxStartDelay != null)
"maxstartdelay = ${toString config.maxStartDelay}")
);
summary =
concatStringsSep "\n "
(["[${name}]"] ++ config.directives);
};
};
listenOptions = {
options = {
address = mkOption {
type = types.str;
description = ''
Address of the interface for `upsd` to listen on.
See `man upsd.conf` for details.
'';
};
port = mkOption {
type = types.port;
default = defaultPort;
description = ''
TCP port for `upsd` to listen on.
See `man upsd.conf` for details.
'';
};
};
};
upsdOptions = {
options = {
enable = mkOption {
type = types.bool;
defaultText = literalMD "`true` if `mode` is one of `standalone`, `netserver`";
description = "Whether to enable `upsd`.";
};
listen = mkOption {
type = with types; listOf (submodule listenOptions);
default = [];
example = [
{
address = "192.168.50.1";
}
{
address = "::1";
port = 5923;
}
];
description = ''
Address of the interface for `upsd` to listen on.
See `man upsd` for details`.
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = ''
Additional lines to add to `upsd.conf`.
'';
};
};
config = {
enable = mkDefault (elem cfg.mode [ "standalone" "netserver" ]);
};
};
monitorOptions = { name, config, ... }: {
options = {
system = mkOption {
type = types.str;
default = name;
description = ''
Identifier of the UPS to monitor, in this form: `<upsname>[@<hostname>[:<port>]]`
See `upsmon.conf` for details.
'';
};
powerValue = mkOption {
type = types.int;
default = 1;
description = ''
Number of power supplies that the UPS feeds on this system.
See `upsmon.conf` for details.
'';
};
user = mkOption {
type = types.str;
description = ''
Username from `upsd.users` for accessing this UPS.
See `upsmon.conf` for details.
'';
};
passwordFile = mkOption {
type = types.str;
defaultText = literalMD "power.ups.users.\${user}.passwordFile";
description = ''
The full path to a file containing the password from
`upsd.users` for accessing this UPS. The password file
is read on service start.
See `upsmon.conf` for details.
'';
};
type = mkOption {
type = types.str;
default = "master";
description = ''
The relationship with `upsd`.
See `upsmon.conf` for details.
'';
};
};
config = {
passwordFile = mkDefault cfg.users.${config.user}.passwordFile;
};
};
upsmonOptions = {
options = {
enable = mkOption {
type = types.bool;
defaultText = literalMD "`true` if `mode` is one of `standalone`, `netserver`, `netclient`";
description = "Whether to enable `upsmon`.";
};
monitor = mkOption {
type = with types; attrsOf (submodule monitorOptions);
default = {};
description = ''
Set of UPS to monitor. See `man upsmon.conf` for details.
'';
};
settings = mkOption {
type = nutFormat.type;
default = {};
defaultText = literalMD ''
{
MINSUPPLIES = 1;
RUN_AS_USER = "root";
NOTIFYCMD = "''${pkgs.nut}/bin/upssched";
SHUTDOWNCMD = "''${pkgs.systemd}/bin/shutdown now";
}
'';
description = "Additional settings to add to `upsmon.conf`.";
example = literalMD ''
{
MINSUPPLIES = 2;
NOTIFYFLAG = [
[ "ONLINE" "SYSLOG+EXEC" ]
[ "ONBATT" "SYSLOG+EXEC" ]
];
}
'';
};
};
config = {
enable = mkDefault (elem cfg.mode [ "standalone" "netserver" "netclient" ]);
settings = {
RUN_AS_USER = "root"; # TODO: replace 'root' by another username.
MINSUPPLIES = mkDefault 1;
NOTIFYCMD = mkDefault "${pkgs.nut}/bin/upssched";
SHUTDOWNCMD = mkDefault "${pkgs.systemd}/bin/shutdown now";
MONITOR = flip mapAttrsToList cfg.upsmon.monitor (name: monitor: with monitor; [ system powerValue user "\"@upsmon_password_${name}@\"" type ]);
};
};
};
userOptions = {
options = {
passwordFile = mkOption {
type = types.str;
description = ''
The full path to a file that contains the user's (clear text)
password. The password file is read on service start.
'';
};
actions = mkOption {
type = with types; listOf str;
default = [];
description = ''
|