can_set_rfmon_test.c revision 356341 
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#include "varattrs.h"
23
24#ifndef lint
25static const char copyright[] _U_ =
26    "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\
27The Regents of the University of California.  All rights reserved.\n";
28#endif
29
30#include <stdio.h>
31#include <stdlib.h>
32#include <string.h>
33#include <stdarg.h>
34
35#include <pcap.h>
36
37#include "pcap/funcattrs.h"
38
39static const char *program_name;
40
41/* Forwards */
42static void PCAP_NORETURN error(PCAP_FORMAT_STRING(const char *), ...) PCAP_PRINTFLIKE(1,2);
43
44int
45main(int argc, char **argv)
46{
47	const char *cp;
48	pcap_t *pd;
49	char ebuf[PCAP_ERRBUF_SIZE];
50	int status;
51
52	if ((cp = strrchr(argv[0], '/')) != NULL)
53		program_name = cp + 1;
54	else
55		program_name = argv[0];
56
57	if (argc != 2) {
58		fprintf(stderr, "Usage: %s <device>\n", program_name);
59		return 2;
60	}
61
62	pd = pcap_create(argv[1], ebuf);
63	if (pd == NULL)
64		error("%s", ebuf);
65	status = pcap_can_set_rfmon(pd);
66	if (status < 0) {
67		if (status == PCAP_ERROR)
68			error("%s: pcap_can_set_rfmon failed: %s", argv[1],
69			    pcap_geterr(pd));
70		else
71			error("%s: pcap_can_set_rfmon failed: %s", argv[1],
72			    pcap_statustostr(status));
73		return 1;
74	}
75	printf("%s: Monitor mode %s be set\n", argv[1], status ? "can" : "cannot");
76	return 0;
77}
78
79/* VARARGS */
80static void
81error(const char *fmt, ...)
82{
83	va_list ap;
84
85	(void)fprintf(stderr, "%s: ", program_name);
86	va_start(ap, fmt);
87	(void)vfprintf(stderr, fmt, ap);
88	va_end(ap);
89	if (*fmt) {
90		fmt += strlen(fmt);
91		if (fmt[-1] != '\n')
92			(void)fputc('\n', stderr);
93	}
94	exit(1);
95	/* NOTREACHED */
96}
97