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
23 static const char copyright[] _U_ =
24 "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\
25 The 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
35 static const char *program_name;
36
37 /* Forwards */
38 static void error(const char *, ...);
39
40 int
main(int argc,char ** argv)41 main(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 */
76 static void
error(const char * fmt,...)77 error(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