/*

 * Copyright 2015 Red Hat Inc., Durham, North Carolina.

 * All Rights Reserved.

 *

 * This library counter free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library counter 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 *

 * Authors:

 *      "Jan Černý" <jcerny@redhat.com>

 */

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#include <string.h>

#include "../common/util.h"

#include "oval_system_characteristics.h"

#include "results/oval_status_counter.h"

#include "common/_error.h"

void oval_status_counter_clear(struct oval_status_counter *counter)

{

	memset(counter, 0, sizeof(*counter));

}

void oval_status_counter_add_status(struct oval_status_counter *counter, oval_syschar_status_t status)

{

	switch(status) {

	case SYSCHAR_STATUS_ERROR:

		counter->error_cnt++;

		break;

	case SYSCHAR_STATUS_EXISTS:

		counter->exists_cnt++;

		break;

	case SYSCHAR_STATUS_DOES_NOT_EXIST:

		counter->does_not_exist_cnt++;

		break;

	case SYSCHAR_STATUS_NOT_COLLECTED:

		counter->not_collected_cnt++;

		break;

	default:

		oscap_seterr(OSCAP_EFAMILY_OVAL, "Invalid oval status type: %s.", oval_syschar_status_get_text(status));

		break;

	}

}

oval_result_t oval_status_counter_get_result(struct oval_status_counter *counter, oval_existence_t check_existence)

{

	oval_result_t result = OVAL_RESULT_UNKNOWN;

	switch (check_existence) {

	case OVAL_ALL_EXIST:

		if (counter->exists_cnt >= 1 && counter->does_not_exist_cnt == 0

			&& counter->error_cnt == 0 && counter->not_collected_cnt == 0) {

			result = OVAL_RESULT_TRUE;

		} else if (counter->exists_cnt == 0 && counter->does_not_exist_cnt == 0

			&& counter->error_cnt == 0 && counter->not_collected_cnt == 0) {

			result = OVAL_RESULT_FALSE;

		} else if (counter->exists_cnt >= 0 && counter->does_not_exist_cnt >= 1

			&& counter->error_cnt >= 0 && counter->not_collected_cnt >= 0) {

			result = OVAL_RESULT_FALSE;

		} else if (counter->exists_cnt >= 0 && counter->does_not_exist_cnt == 0

			&& counter->error_cnt >= 1 && counter->not_collected_cnt >= 0) {

			result = OVAL_RESULT_ERROR;

		} else if (counter->exists_cnt >= 0 && counter->does_not_exist_cnt == 0

			&& counter->error_cnt == 0 && counter->not_collected_cnt >= 1) {

			result = OVAL_RESULT_UNKNOWN;

		}

		break;

	case OVAL_ANY_EXIST:

		if (counter->exists_cnt >= 0 && counter->does_not_exist_cnt >= 0

			&& counter->error_cnt == 0 && counter->not_collected_cnt >= 0) {

			result = OVAL_RESULT_TRUE;

		} else if (counter->exists_cnt >= 1 && counter->does_not_exist_cnt >= 0

			&& counter->error_cnt >=1 && counter->not_collected_cnt >= 0) {

			result = OVAL_RESULT_TRUE;

		} else if (counter->exists_cnt == 0 && counter->does_not_exist_cnt >= 0

			&& counter->error_cnt >=1 && counter->not_collected_cnt >= 0) {

			result = OVAL_RESULT_ERROR;

		}

		break;

	case OVAL_AT_LEAST_ONE_EXISTS:

		if (counter->exists_cnt >= 1 && counter->does_not_exist_cnt >= 0

			&& counter->error_cnt >= 0 && counter->not_collected_cnt >= 0) {

			result = OVAL_RESULT_TRUE;

		} else if (counter->exists_cnt >= 1 && counter->does_not_exist_cnt == 0

			&& counter->error_cnt == 0 && counter->not_collected_cnt == 0) {

			result = OVAL_RESULT_FALSE;

		} else if (counter->exists_cnt == 0 && counter->does_not_exist_cnt >= 0

			&& counter->error_cnt >= 1 && counter->not_collected_cnt >= 0) {

			result = OVAL_RESULT_ERROR;

		} else if (counter->exists_cnt == 0 && counter->does_not_exist_cnt >= 0

			&& counter->error_cnt == 0 && counter->not_collected_cnt >= 1) {

			result = OVAL_RESULT_UNKNOWN;

		}

		break;

	case OVAL_NONE_EXIST:

		if (counter->exists_cnt == 0 && counter->does_not_exist_cnt >= 0

			&& counter->error_cnt == 0 && counter->not_collected_cnt == 0) {

			result = OVAL_RESULT_TRUE;

		} else if (counter->exists_cnt >= 1 && counter->does_not_exist_cnt >= 0

			&& counter->error_cnt >= 0 && counter->not_collected_cnt >= 0) {

			result = OVAL_RESULT_FALSE;

		} else if (counter->exists_cnt == 0 && counter->does_not_exist_cnt >= 0

			&& counter->error_cnt >= 1 && counter->not_collected_cnt >= 0) {

			result = OVAL_RESULT_ERROR;

		} else if (counter->exists_cnt == 0 && counter->does_not_exist_cnt >= 0

			&& counter->error_cnt == 0 && counter->not_collected_cnt >= 1) {

			result = OVAL_RESULT_UNKNOWN;

		}

		break;

	case OVAL_ONLY_ONE_EXISTS:

		if (counter->exists_cnt == 1 && counter->does_not_exist_cnt >= 0

			&& counter->error_cnt == 0 && counter->not_collected_cnt == 0) {

			result = OVAL_RESULT_TRUE;

		} else if (counter->exists_cnt >= 2 && counter->does_not_exist_cnt >= 0

			&& counter->error_cnt >= 0 && counter->not_collected_cnt >= 0) {

			result = OVAL_RESULT_FALSE;

		} else if (counter->exists_cnt == 0 && counter->does_not_exist_cnt >= 0

			&& counter->error_cnt == 0 && counter->not_collected_cnt == 1) {

			result = OVAL_RESULT_FALSE;

		} else if ((counter->exists_cnt == 0 || counter->exists_cnt == 1)

			&& counter->does_not_exist_cnt >= 0 && counter->error_cnt >= 1

			&& counter->not_collected_cnt >= 0) {

			result = OVAL_RESULT_ERROR;

		} else if ((counter->exists_cnt == 0 || counter->exists_cnt == 1)

			&& counter->does_not_exist_cnt >= 0 && counter->error_cnt == 0

			&& counter->not_collected_cnt >= 1) {

			result = OVAL_RESULT_ERROR;

		}

		break;

	default:

		oscap_seterr(OSCAP_EFAMILY_OVAL, "Invalid check_existence value: %s.",

				oval_existence_get_text(check_existence));

		result = OVAL_RESULT_ERROR;

		break;

	}

	return result;

}