1/*
2 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
16 * written permission.
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 */
21
22#ifndef lint
23static const char copyright[] _U_ =
24    "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\
25The Regents of the University of California.  All rights reserved.\n";
26#endif
27
28#include <stdio.h>
29#include <stdlib.h>
30#include <string.h>
31#include <stdarg.h>
32
33#include <pcap.h>
34
35static const char *program_name;
36
37/* Forwards */
38static void error(const char *, ...);
39
40int
41main(int argc, char **argv)
42{
43	const char *cp;
44	pcap_t *pd;
45	char ebuf[PCAP_ERRBUF_SIZE];
46	int status;
47
48	if ((cp = strrchr(argv[0], '/')) != NULL)
49		program_name = cp + 1;
50	else
51		program_name = argv[0];
52
53	if (argc != 2) {
54		fprintf(stderr, "Usage: %s <device>\n", program_name);
55		return 2;
56	}
57
58	pd = pcap_create(argv[1], ebuf);
59	if (pd == NULL)
60		error("%s", ebuf);
61	status = pcap_can_set_rfmon(pd);
62	if (status < 0) {
63		if (status == PCAP_ERROR)
64			error("%s: pcap_can_set_rfmon failed: %s", argv[1],
65			    pcap_geterr(pd));
66		else
67			error("%s: pcap_can_set_rfmon failed: %s", argv[1],
68			    pcap_statustostr(status));
69		return 1;
70	}
71	printf("%s: Monitor mode %s be set\n", argv[1], status ? "can" : "cannot");
72	return 0;
73}
74
75/* VARARGS */
76static void
77error(const char *fmt, ...)
78{
79	va_list ap;
80
81	(void)fprintf(stderr, "%s: ", program_name);
82	va_start(ap, fmt);
83	(void)vfprintf(stderr, fmt, ap);
84	va_end(ap);
85	if (*fmt) {
86		fmt += strlen(fmt);
87		if (fmt[-1] != '\n')
88			(void)fputc('\n', stderr);
89	}
90	exit(1);
91	/* NOTREACHED */
92}
93