Files
clan-core/nixosModules/clanCore/secrets/sops.nix
2023-09-21 17:22:20 +02:00

60 lines
2.9 KiB
Nix

{ config, lib, pkgs, ... }:
let
secretsDir = config.clanCore.clanDir + "/sops/secrets";
groupsDir = config.clanCore.clanDir + "/sops/groups";
# My symlink is in the nixos module detected as a directory also it works in the repl. Is this because of pure evaluation?
containsSymlink = path:
builtins.pathExists path && (builtins.readFileType path == "directory" || builtins.readFileType path == "symlink");
containsMachine = parent: name: type:
type == "directory" && containsSymlink "${parent}/${name}/machines/${config.clanCore.machineName}";
containsMachineOrGroups = name: type:
(containsMachine secretsDir name type) || lib.any (group: type == "directory" && containsSymlink "${secretsDir}/${name}/groups/${group}") groups;
filterDir = filter: dir:
lib.optionalAttrs (builtins.pathExists dir)
(lib.filterAttrs filter (builtins.readDir dir));
groups = builtins.attrNames (filterDir (containsMachine groupsDir) groupsDir);
secrets = filterDir containsMachineOrGroups secretsDir;
systems = [ "i686-linux" "x86_64-linux" "riscv64-linux" "aarch64-linux" "x86_64-darwin" ];
in
{
config = lib.mkIf (config.clanCore.secretStore == "sops") {
system.clan = lib.genAttrs systems (system:
let
# Maybe use inputs.nixpkgs.legacyPackages here?
# don't reimport nixpkgs if we are on the same system (optimization)
pkgs' = if pkgs.hostPlatform.system == system then pkgs else import pkgs.path { system = system; };
in
{
generateSecrets = pkgs.writeScript "generate-secrets" ''
#!${pkgs'.python3}/bin/python
import json
from clan_cli.secrets.generate import generate_secrets_from_nix
args = json.loads(${builtins.toJSON (builtins.toJSON { machine_name = config.clanCore.machineName; secret_submodules = config.clanCore.secrets; })})
generate_secrets_from_nix(**args)
'';
uploadSecrets = pkgs.writeScript "upload-secrets" ''
#!${pkgs'.python3}/bin/python
import json
from clan_cli.secrets.upload import upload_age_key_from_nix
# the second toJSON is needed to escape the string for the python
args = json.loads(${builtins.toJSON (builtins.toJSON { machine_name = config.clanCore.machineName; deployment_address = config.clan.networking.deploymentAddress; age_key_file = config.sops.age.keyFile; })})
upload_age_key_from_nix(**args)
'';
});
sops.secrets = builtins.mapAttrs
(name: _: {
sopsFile = config.clanCore.clanDir + "/sops/secrets/${name}/secret";
format = "binary";
})
secrets;
# To get proper error messages about missing secrets we need a dummy secret file that is always present
sops.defaultSopsFile = lib.mkIf config.sops.validateSopsFiles (lib.mkDefault (builtins.toString (pkgs.writeText "dummy.yaml" "")));
sops.age.keyFile = lib.mkDefault "/var/lib/sops-nix/key.txt";
};
}