/*
   Unix SMB/CIFS implementation.

   session_info utility functions

   Copyright (C) Andrew Bartlett 2008-2010

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "libcli/security/security.h"
#include "librpc/gen_ndr/auth.h"

enum security_user_level security_session_user_level(struct auth_session_info *session_info,
						     const struct dom_sid *domain_sid)
{
	struct security_token *token = NULL;
	bool authenticated = false;
	bool guest = false;

	if (!session_info) {
		return SECURITY_ANONYMOUS;
	}
	token = session_info->security_token;

	if (security_token_is_system(token)) {
		return SECURITY_SYSTEM;
	}

	if (security_token_is_anonymous(token)) {
		return SECURITY_ANONYMOUS;
	}

	authenticated = security_token_has_nt_authenticated_users(token);
	guest = security_token_has_builtin_guests(token);
	if (!authenticated) {
		if (guest) {
			return SECURITY_GUEST;
		}
		return SECURITY_ANONYMOUS;
	}

	if (security_token_has_builtin_administrators(token)) {
		return SECURITY_ADMINISTRATOR;
	}

	if (domain_sid) {
		struct dom_sid rodc_dcs = { .num_auths = 0 };
		sid_compose(&rodc_dcs, domain_sid, DOMAIN_RID_READONLY_DCS);

		if (security_token_has_sid(token, &rodc_dcs)) {
			return SECURITY_RO_DOMAIN_CONTROLLER;
		}
	}

	if (security_token_has_enterprise_dcs(token)) {
		return SECURITY_DOMAIN_CONTROLLER;
	}

	return SECURITY_USER;
}
