The Tcpdump Group git mirrors - libpcap/blob - tests/can_set_rfmon_test.c

   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
  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
  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 }