94 lines
4.0 KiB
Nix
94 lines
4.0 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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secretsDir = config.clanCore.clanDir + "/sops/secrets";
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groupsDir = config.clanCore.clanDir + "/sops/groups";
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# My symlink is in the nixos module detected as a directory also it works in the repl. Is this because of pure evaluation?
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containsSymlink = path:
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builtins.pathExists path && (builtins.readFileType path == "directory" || builtins.readFileType path == "symlink");
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containsMachine = parent: name: type:
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type == "directory" && containsSymlink "${parent}/${name}/machines/${config.clanCore.machineName}";
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containsMachineOrGroups = name: type:
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(containsMachine secretsDir name type) || lib.any (group: type == "directory" && containsSymlink "${secretsDir}/${name}/groups/${group}") groups;
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filterDir = filter: dir:
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lib.optionalAttrs (builtins.pathExists dir)
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(lib.filterAttrs filter (builtins.readDir dir));
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groups = builtins.attrNames (filterDir (containsMachine groupsDir) groupsDir);
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secrets = filterDir containsMachineOrGroups secretsDir;
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in
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{
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config = lib.mkIf (config.clanCore.secretStore == "sops") {
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clanCore.secretsDirectory = "/run/secrets";
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clanCore.secretsPrefix = config.clanCore.machineName + "-";
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system.clan = lib.mkIf (config.clanCore.secrets != { }) {
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secretsModule = pkgs.writeText "sops.py" ''
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from pathlib import Path
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from clan_cli.secrets.folders import sops_secrets_folder
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from clan_cli.secrets.secrets import decrypt_secret, encrypt_secret, has_secret
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from clan_cli.secrets.sops import generate_private_key
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from clan_cli.secrets.machines import has_machine, add_machine
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from clan_cli.machines.machines import Machine
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class SecretStore:
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def __init__(self, machine: Machine) -> None:
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self.machine = machine
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if has_machine(self.machine.flake_dir, self.machine.name):
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return
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priv_key, pub_key = generate_private_key()
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encrypt_secret(
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self.machine.flake_dir,
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sops_secrets_folder(self.machine.flake_dir) / f"{self.machine.name}-age.key",
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priv_key,
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)
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add_machine(self.machine.flake_dir, self.machine.name, pub_key, False)
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def set(self, service: str, name: str, value: str):
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encrypt_secret(
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self.machine.flake_dir,
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sops_secrets_folder(self.machine.flake_dir) / f"{self.machine.name}-{name}",
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value,
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add_machines=[self.machine.name],
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)
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def get(self, service: str, name: str) -> bytes:
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# TODO: add support for getting a secret
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pass
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def exists(self, service: str, name: str) -> bool:
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return has_secret(
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self.machine.flake_dir,
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f"{self.machine.name}-{name}",
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)
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def upload(self, output_dir: Path, secrets: list[str, str]) -> None:
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key_name = f"{self.machine.name}-age.key"
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if not has_secret(self.machine.flake_dir, key_name):
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# skip uploading the secret, not managed by us
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return
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key = decrypt_secret(self.machine.flake_dir, key_name)
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(output_dir / "key.txt").write_text(key)
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'';
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};
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sops.secrets = builtins.mapAttrs
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(name: _: {
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sopsFile = config.clanCore.clanDir + "/sops/secrets/${name}/secret";
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format = "binary";
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})
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secrets;
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# To get proper error messages about missing secrets we need a dummy secret file that is always present
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sops.defaultSopsFile = lib.mkIf config.sops.validateSopsFiles (lib.mkDefault (builtins.toString (pkgs.writeText "dummy.yaml" "")));
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sops.age.keyFile = lib.mkIf (builtins.pathExists (config.clanCore.clanDir + "/sops/secrets/${config.clanCore.machineName}-age.key/secret"))
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(lib.mkDefault "/var/lib/sops-nix/key.txt");
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clanCore.secretsUploadDirectory = lib.mkDefault "/var/lib/sops-nix";
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};
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}
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