nix-config/nixos/modules/admin.nix

97 lines
2.4 KiB
Nix

{ config, pkgs, lib, ... }:
with lib;
let
cfg = config.dadada.admin;
extraGroups = [ "wheel" "libvirtd" ];
shells = {
"bash" = pkgs.bashInteractive;
"zsh" = pkgs.zsh;
"fish" = pkgs.fish;
};
shellNames = builtins.attrNames shells;
adminOpts = { name, config, ... }: {
options = {
keys = mkOption {
type = types.listOf types.str;
default = [ ];
apply = x: assert (builtins.length x > 0 || abort "Please specify at least one key to be able to log in"); x;
description = ''
The keys that should be able to access the account.
'';
};
shell = mkOption {
type = types.nullOr types.str;
apply = x: assert (builtins.elem x shellNames || abort "Please specify one of ${builtins.toString shellNames}"); x;
default = "zsh";
defaultText = literalExpression "zsh";
example = literalExpression "bash";
description = ''
One of ${builtins.toString shellNames}
'';
};
};
};
in
{
options = {
dadada.admin = {
enable = mkEnableOption "Enable admin access";
users = mkOption {
type = with types; attrsOf (submodule adminOpts);
default = { };
description = ''
Admin users with root access machine.
'';
example = literalExample "\"user1\" = { shell = pkgs.bashInteractive; keys = [ 'ssh-rsa 123456789' ]; }";
};
rat = mkOption {
type = types.bool;
default = false;
description = ''
Enable NAT and firewall traversal for SSH via tor hidden service
'';
};
};
};
config = mkIf cfg.enable {
programs.zsh.enable = mkDefault true;
services.sshd.enable = true;
services.openssh.passwordAuthentication = false;
security.sudo.wheelNeedsPassword = false;
services.openssh.openFirewall = true;
users.users = mapAttrs
(user: keys: (
{
shell = shells."${keys.shell}";
extraGroups = extraGroups;
isNormalUser = true;
openssh.authorizedKeys.keys = keys.keys;
}))
cfg.users;
nix.trustedUsers = builtins.attrNames cfg.users;
users.mutableUsers = mkDefault false;
environment.systemPackages = with pkgs; [
vim
tmux
];
services.tor.relay.onionServices = {
"rat" = mkIf cfg.rat.enable {
name = "rat";
map = [{ port = 22; }];
};
};
};
}