/*

 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000

 *	The Regents of the University of California.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that: (1) source code distributions

 * retain the above copyright notice and this paragraph in its entirety, (2)

 * distributions including binary code include the above copyright notice and

 * this paragraph in its entirety in the documentation or other materials

 * provided with the distribution, and (3) all advertising materials mentioning

 * features or use of this software display the following acknowledgement:

 * ``This product includes software developed by the University of California,

 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of

 * the University nor the names of its contributors may be used to endorse

 * or promote products derived from this software without specific prior

 * written permission.

 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED

 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF

 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 */

#include "varattrs.h"

#ifndef lint

static const char copyright[] _U_ =

    "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\

The Regents of the University of California.  All rights reserved.\n";

#endif

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <stdarg.h>

#include <pcap.h>

#include "pcap/funcattrs.h"

static const char *program_name;

/* Forwards */

static void PCAP_NORETURN error(PCAP_FORMAT_STRING(const char *), ...) PCAP_PRINTFLIKE(1,2);

int

main(int argc, char **argv)

{

	const char *cp;

	pcap_t *pd;

	char ebuf[PCAP_ERRBUF_SIZE];

	int status;

	if ((cp = strrchr(argv[0], '/')) != NULL)

		program_name = cp + 1;

	else

		program_name = argv[0];

	if (argc != 2) {

		fprintf(stderr, "Usage: %s <device>\n", program_name);

		return 2;

	}

	pd = pcap_create(argv[1], ebuf);

	if (pd == NULL)

		error("%s", ebuf);

	status = pcap_can_set_rfmon(pd);

	if (status < 0) {

		if (status == PCAP_ERROR)

			error("%s: pcap_can_set_rfmon failed: %s", argv[1],

			    pcap_geterr(pd));

		else

			error("%s: pcap_can_set_rfmon failed: %s", argv[1],

			    pcap_statustostr(status));

		return 1;

	}

	printf("%s: Monitor mode %s be set\n", argv[1], status ? "can" : "cannot");

	return 0;

}

/* VARARGS */

static void

error(const char *fmt, ...)

{

	va_list ap;

	(void)fprintf(stderr, "%s: ", program_name);

	va_start(ap, fmt);

	(void)vfprintf(stderr, fmt, ap);

	va_end(ap);

	if (*fmt) {

		fmt += strlen(fmt);

		if (fmt[-1] != '\n')

			(void)fputc('\n', stderr);

	}

	exit(1);

	/* NOTREACHED */

}