/*

 * Management Functions

 *

 * Author: Paul Moore <paul@paul-moore.com>

 *

 */

/*

 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of version 2 of the GNU General Public License as

 * published by the Free Software Foundation.

 *

 * 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 <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <errno.h>

#include <libnetlabel.h>

#include "netlabelctl.h"

/**

 * Display a list of the kernel's NetLabel protocols

 *

 * Request the kernel's supported NetLabel protocols and display the list to

 * the user.  Returns zero on success, negative values on failure.

 *

 */

static int mgmt_protocols(void)

{

	int rc;

	nlbl_proto *list = NULL;

	size_t count;

	uint32_t iter;

	rc = nlbl_mgmt_protocols(NULL, &list);

	if (rc < 0)

		return rc;

	count = rc;

	printf(MSG("NetLabel protocols : "));

	for (iter = 0; iter < count; iter++) {

		switch (list[iter]) {

		case NETLBL_NLTYPE_UNLABELED:

			printf("UNLABELED");

			break;

		case NETLBL_NLTYPE_RIPSO:

			printf("RIPSO");

			break;

		case NETLBL_NLTYPE_CIPSOV4:

			/* preserve "CIPSOv4" for any scripts */

			if (opt_pretty)

				printf("CIPSO");

			else

				printf("CIPSOv4");

			break;

		case NETLBL_NLTYPE_CIPSOV6:

			printf("CIPSOv6");

			break;

		case NETLBL_NLTYPE_CALIPSO:

			printf("CALIPSO");

			break;

		default:

			printf("UNKNOWN(%u)", list[iter]);

			break;

		}

		if (iter + 1 < count)

			printf("%s", (opt_pretty ? " " : ","));

	}

	printf("\n");

	if (list != NULL)

		free(list);

	return 0;

}

/**

 * Display the kernel's NetLabel version

 *

 * Request the kernel's NetLabel version string and display it to the user.

 * Returns zero on success, negative values on failure.

 *

 */

static int mgmt_version(void)

{

	int rc;

	uint32_t kernel_ver;

	rc = nlbl_mgmt_version(NULL, &kernel_ver);

	if (rc < 0)

		return rc;

	if (opt_pretty != 0) {

		printf("Supported NetLabel protocol versions\n"

		       "  kernel : %u\n"

		       "  %s : %u\n",

		       kernel_ver, nlctl_name, NETLBL_PROTO_VERSION);

	} else

		printf("%u\n", kernel_ver);

	return 0;

}

/**

 * Entry point for the NetLabel management functions

 * @param argc the number of arguments

 * @param argv the argument list

 *

 * Description:

 * Parses the argument list and performs the requested operation.  Returns zero

 * on success, negative values on failure.

 *

 */

int mgmt_main(int argc, char *argv[])

{

	int rc;

	/* sanity checks */

	if (argc <= 0 || argv == NULL || argv[0] == NULL)

		return -EINVAL;

	/* handle the request */

	if (strcmp(argv[0], "version") == 0) {

		/* kernel version */

		rc = mgmt_version();

	} else if (strcmp(argv[0], "protocols") == 0) {

		/* module list */

		rc = mgmt_protocols();

	} else {

		/* unknown request */

		rc = -EINVAL;

	}

	return rc;

}