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
25 static const char copyright[] _U_ =
26 "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\
27 The 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
39 static const char *program_name;
40
41 /* Forwards */
42 static void PCAP_NORETURN error(PCAP_FORMAT_STRING(const char *), ...) PCAP_PRINTFLIKE(1,2);
43
44 int
main(int argc,char ** argv)45 main(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 */
80 static void
error(const char * fmt,...)81 error(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