nixpkgs/nixos/modules/services/system/kerberos/default.nix

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{config, lib, ...}:
let
inherit (lib) mkOption mkIf types length attrNames;
cfg = config.services.kerberos_server;
kerberos = config.krb5.kerberos;
aclEntry = {
options = {
principal = mkOption {
type = types.str;
description = "Which principal the rule applies to";
};
access = mkOption {
type = types.either
(types.listOf (types.enum ["add" "cpw" "delete" "get" "list" "modify"]))
(types.enum ["all"]);
default = "all";
description = "The changes the principal is allowed to make.";
};
target = mkOption {
type = types.str;
default = "*";
description = "The principals that 'access' applies to.";
};
};
};
realm = {
options = {
acl = mkOption {
type = types.listOf (types.submodule aclEntry);
default = [
{ principal = "*/admin"; access = "all"; }
{ principal = "admin"; access = "all"; }
];
description = ''
The privileges granted to a user.
'';
};
};
};
in
{
imports = [
./mit.nix
./heimdal.nix
];
###### interface
options = {
services.kerberos_server = {
enable = lib.mkEnableOption "the kerberos authentification server";
realms = mkOption {
type = types.attrsOf (types.submodule realm);
description = ''
The realm(s) to serve keys for.
'';
};
};
};
###### implementation
config = mkIf cfg.enable {
environment.systemPackages = [ kerberos ];
assertions = [{
assertion = length (attrNames cfg.realms) <= 1;
message = "Only one realm per server is currently supported.";
}];
};
}