stockholm/lib/types.nix

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{ lib, ... }:
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let
inherit (lib)
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all any attrNames concatMapStringsSep concatStringsSep const filter flip
genid_uint31 hasSuffix head isInt isString length mergeOneOption mkOption
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mkOptionType optional optionalAttrs optionals range splitString
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stringLength substring test testString typeOf;
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inherit (lib.types)
attrsOf bool either enum int listOf nullOr path str string submodule;
in
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rec {
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host = submodule ({ config, ... }: {
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options = {
name = mkOption {
type = label;
default = config._module.args.name;
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};
cores = mkOption {
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type = uint;
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};
nets = mkOption {
type = attrsOf net;
default = {};
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};
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binary-cache.pubkey = mkOption {
type = nullOr binary-cache-pubkey;
default = null;
};
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ci = mkOption {
description = ''
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If true, then the host wants to be tested by some CI system.
See <stockholm/krebs/2configs/buildbot-all.nix>
'';
type = bool;
default = false;
};
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external = mkOption {
description = ''
Whether the host is defined externally (in contrast to being defined
in <stockholm>). This is useful e.g. when legacy and/or adopted
hosts should be part of retiolum or some other component.
'';
type = bool;
default = false;
};
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monitoring = mkOption {
description = ''
Whether the host should be monitored by monitoring tools like Prometheus.
'';
type = bool;
default = false;
};
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owner = mkOption {
type = user;
};
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extraZones = mkOption {
default = {};
# TODO: string is either MX, NS, A or AAAA
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type = attrsOf string;
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};
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secure = mkOption {
type = bool;
default = false;
description = ''
If true, then the host is capable of keeping secret information.
TODO define minimum requirements for secure hosts
'';
};
ssh.pubkey = mkOption {
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type = nullOr ssh-pubkey;
default = null;
};
ssh.privkey = mkOption {
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type = nullOr ssh-privkey;
default = null;
};
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syncthing.id = mkOption {
# TODO syncthing id type
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type = nullOr str;
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default = null;
};
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};
});
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net = submodule ({ config, ... }: {
options = {
name = mkOption {
type = label;
default = config._module.args.name;
};
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via = mkOption {
type = nullOr net;
default = null;
};
addrs = mkOption {
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type = listOf addr;
default =
optional (config.ip4 != null) config.ip4.addr ++
optional (config.ip6 != null) config.ip6.addr;
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};
aliases = mkOption {
# TODO nonEmptyListOf hostname
type = listOf hostname;
default = [];
};
ip4 = mkOption {
type = nullOr (submodule {
options = {
addr = mkOption {
type = addr4;
};
prefix = mkOption ({
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type = cidr4;
} // optionalAttrs (config.name == "retiolum") {
default = "10.243.0.0/16";
});
};
});
default = null;
};
ip6 = mkOption {
type = nullOr (submodule {
options = {
addr = mkOption {
type = addr6;
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apply = lib.normalize-ip6-addr;
};
prefix = mkOption ({
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type = cidr6;
} // optionalAttrs (config.name == "retiolum") {
default = "42::/16";
});
};
});
default = null;
};
ssh = mkOption {
type = submodule {
options = {
port = mkOption {
type = int;
default = 22;
};
};
};
default = {};
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};
tinc = mkOption {
type = let net = config; in nullOr (submodule ({ config, ... }: {
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options = {
config = mkOption {
type = str;
default = concatStringsSep "\n" (
(optionals (net.via != null)
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(map (a: "Address = ${a} ${toString config.port}") net.via.addrs))
++
(map (a: "Subnet = ${a}") net.addrs)
++
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(map (a: "Subnet = ${a}") config.subnets)
++
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[config.extraConfig]
++
[config.pubkey]
);
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};
pubkey = mkOption {
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type = tinc-pubkey;
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};
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extraConfig = mkOption {
description = "Extra Configuration to be appended to the hosts file";
default = "";
type = string;
};
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port = mkOption {
type = int;
description = "tinc port to use to connect to host";
default = 655;
};
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subnets = mkOption {
type = listOf cidr;
description = "tinc subnets";
default = [];
};
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};
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}));
default = null;
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};
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wireguard = mkOption {
type = nullOr (submodule ({ config, ... }: {
options = {
port = mkOption {
type = int;
description = "tinc port to use to connect to host";
default = 51820;
};
pubkey = mkOption {
type = wireguard-pubkey;
};
subnets = mkOption {
type = listOf cidr;
description = ''
wireguard subnets,
this defines how routing behaves for hosts that can't reach each other.
'';
default = [];
};
};
}));
};
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};
});
positive = mkOptionType {
name = "positive integer";
check = x: isInt x && x > 0;
merge = mergeOneOption;
};
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uint = mkOptionType {
name = "unsigned integer";
check = x: isInt x && x >= 0;
merge = mergeOneOption;
};
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secret-file = submodule ({ config, ... }: {
options = {
name = mkOption {
type = filename;
default = config._module.args.name;
};
path = mkOption {
type = absolute-pathname;
default = "/run/keys/${config.name}";
};
mode = mkOption {
type = file-mode;
default = "0400";
};
owner = mkOption {
type = user;
};
group-name = mkOption {
type = str;
default = "root";
};
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source-path = mkOption {
type = str;
default = toString <secrets> + "/${config.name}";
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};
};
});
source = submodule ({ config, ... }: {
options = {
type = let
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known-types = attrNames source-types;
type-candidates = filter (k: config.${k} != null) known-types;
in mkOption {
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default = if length type-candidates == 1
then head type-candidates
else throw "cannot determine type";
type = enum known-types;
};
file = mkOption {
apply = x:
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if absolute-pathname.check x
then { path = x; }
else x;
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default = null;
type = nullOr (either absolute-pathname source-types.file);
};
git = mkOption {
default = null;
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type = nullOr source-types.git;
};
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pass = mkOption {
default = null;
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type = nullOr source-types.pass;
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};
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pipe = mkOption {
apply = x:
if absolute-pathname.check x
then { command = x; }
else x;
default = null;
type = nullOr (either absolute-pathname source-types.pipe);
};
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symlink = mkOption {
type = nullOr (either pathname source-types.symlink);
default = null;
apply = x:
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if pathname.check x
then { target = x; }
else x;
};
};
});
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source-types = {
file = submodule {
options = {
path = mkOption {
type = absolute-pathname;
};
};
};
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git = submodule {
options = {
ref = mkOption {
type = str; # TODO types.git.ref
};
url = mkOption {
type = str; # TODO types.git.url
};
};
};
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pass = submodule {
options = {
dir = mkOption {
type = absolute-pathname;
};
name = mkOption {
type = pathname; # TODO relative-pathname
};
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};
};
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pipe = submodule {
options = {
command = mkOption {
type = absolute-pathname;
};
};
};
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symlink = submodule {
options = {
target = mkOption {
type = pathname; # TODO relative-pathname
};
};
};
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};
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suffixed-str = suffs:
mkOptionType {
name = "string suffixed by ${concatStringsSep ", " suffs}";
check = x: isString x && any (flip hasSuffix x) suffs;
merge = mergeOneOption;
};
user = submodule ({ config, ... }: {
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options = {
home = mkOption {
type = absolute-pathname;
default = "/home/${config.name}";
};
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mail = mkOption {
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type = nullOr str;
default = null;
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};
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name = mkOption {
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type = username;
default = config._module.args.name;
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};
pgp.pubkeys = mkOption {
type = attrsOf pgp-pubkey;
default = {};
description = ''
Set of user's PGP public keys.
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Modules supporting PGP may use well-known key names to define
default values for options, in which case the well-known name
should be documented in the respective option's description.
'';
};
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pubkey = mkOption {
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type = nullOr ssh-pubkey;
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default = null;
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};
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uid = mkOption {
type = int;
default = genid_uint31 config.name;
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};
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};
});
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group = submodule ({ config, ... }: {
options = {
name = mkOption {
type = username;
default = config._module.args.name;
};
gid = mkOption {
type = int;
default = genid_uint31 config.name;
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};
};
});
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addr = either addr4 addr6;
addr4 = mkOptionType {
name = "IPv4 address";
check = let
IPv4address = let d = "([1-9]?[0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])"; in
concatMapStringsSep "." (const d) (range 1 4);
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in
test IPv4address;
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merge = mergeOneOption;
};
addr6 = mkOptionType {
name = "IPv6 address";
check = let
# TODO check IPv6 address harder
IPv6address = "[0-9a-f.:]+";
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in
test IPv6address;
merge = mergeOneOption;
};
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cidr = either cidr4 cidr6;
cidr4 = mkOptionType {
name = "CIDRv4 address";
check = let
CIDRv4address = let d = "([1-9]?[0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])"; in
concatMapStringsSep "." (const d) (range 1 4) + "(/([1-2]?[0-9]|3[0-2]))?";
in
test CIDRv4address;
merge = mergeOneOption;
};
cidr6 = mkOptionType {
name = "CIDRv6 address";
check = let
# TODO check IPv6 address harder
CIDRv6address = "[0-9a-f.:]+(/([0-9][0-9]?|1[0-2][0-8]))?";
in
test CIDRv6address;
merge = mergeOneOption;
};
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binary-cache-pubkey = str;
pgp-pubkey = str;
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sitemap.entry = submodule ({ config, ... }: {
options = {
desc = mkOption {
default = null;
type = nullOr str;
};
href = mkOption {
${if testString "https?://.*" config._module.args.name
then "default" else null} = config._module.args.name;
type = nullOr str; # TODO nullOr uri?
};
};
});
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ssh-pubkey = str;
ssh-privkey = submodule {
options = {
bits = mkOption {
type = nullOr (enum ["4096"]);
default = null;
};
path = mkOption {
type = either path str;
apply = x: {
path = toString x;
string = x;
}.${typeOf x};
};
type = mkOption {
type = enum ["rsa" "ed25519"];
default = "ed25519";
};
};
};
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tinc-pubkey = str;
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krebs.file-location = submodule {
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options = {
# TODO user
host = mkOption {
type = host;
};
# TODO merge with ssl.privkey.path
path = mkOption {
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type = either path str;
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apply = x: {
path = toString x;
string = x;
}.${typeOf x};
};
};
};
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file-mode = mkOptionType {
name = "file mode";
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check = test "[0-7]{4}";
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merge = mergeOneOption;
};
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haskell.conid = mkOptionType {
name = "Haskell constructor identifier";
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check = test "[[:upper:]][[:lower:]_[:upper:]0-9']*";
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merge = mergeOneOption;
};
haskell.modid = mkOptionType {
name = "Haskell module identifier";
check = x: isString x && all haskell.conid.check (splitString "." x);
merge = mergeOneOption;
};
# RFC952, B. Lexical grammar, <hname>
hostname = mkOptionType {
name = "hostname";
check = x: isString x && all label.check (splitString "." x);
merge = mergeOneOption;
};
# RFC952, B. Lexical grammar, <name>
# RFC1123, 2.1 Host Names and Numbers
label = mkOptionType {
name = "label";
# TODO case-insensitive labels
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check = test "[0-9A-Za-z]([0-9A-Za-z-]*[0-9A-Za-z])?";
merge = mergeOneOption;
};
# POSIX.12017, 3.190 Group Name
groupname = mkOptionType {
name = "POSIX group name";
check = filename.check;
merge = mergeOneOption;
};
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# POSIX.12017, 3.281 Portable Filename
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filename = mkOptionType {
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name = "POSIX portable filename";
check = test "[0-9A-Za-z._][0-9A-Za-z._-]*";
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merge = mergeOneOption;
};
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# POSIX.12017, 3.2 Absolute Pathname
absolute-pathname = mkOptionType {
name = "POSIX absolute pathname";
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check = x: isString x && substring 0 1 x == "/" && pathname.check x;
merge = mergeOneOption;
};
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# POSIX.1-2017, 3.271 Pathname
pathname = mkOptionType {
name = "POSIX pathname";
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check = x:
let
# The filter is used to normalize paths, i.e. to remove duplicated and
# trailing slashes. It also removes leading slashes, thus we have to
# check for "/" explicitly below.
xs = filter (s: stringLength s > 0) (splitString "/" x);
in
isString x && (x == "/" || (length xs > 0 && all filename.check xs));
merge = mergeOneOption;
};
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# POSIX.1-2017, 3.216 Login Name
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username = mkOptionType {
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name = "POSIX login name";
check = filename.check;
merge = mergeOneOption;
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};
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wireguard-pubkey = str;
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}