The Tcpdump Group git mirrors - libpcap/blob - testprogs/reactivatetest.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 #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 <pcap.h>
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33 #include <string.h>
  34 #include <stdarg.h>
  35
  36 #include "pcap/funcattrs.h"
  37
  38 /* Forwards */
  39 static void PCAP_NORETURN error(PCAP_FORMAT_STRING(const char *), ...) PCAP_PRINTFLIKE(1,2);
  40
  41 int
  42 main(int argc, char **argv)
  43 {
  44         char ebuf[PCAP_ERRBUF_SIZE];
  45         pcap_t *pd;
  46         int status = 0;
  47
  48         if (argc != 2)
  49                 error("expecting exactly one command-line argument with the interface name");
  50         char *ifname = argv[1];
  51
  52         pd = pcap_open_live(ifname, 65535, 0, 1000, ebuf);
  53         if (pd == NULL) {
  54                 error("pcap_open_live() failed: %s",
  55                     ebuf);
  56         }
  57
  58         status = pcap_activate(pd);
  59         if (status != PCAP_ERROR_ACTIVATED) {
  60                 if (status == 0)
  61                         error("pcap_activate() of opened pcap_t succeeded");
  62                 else if (status == PCAP_ERROR)
  63                         error("pcap_activate() of opened pcap_t failed with %s, not PCAP_ERROR_ACTIVATED",
  64                             pcap_geterr(pd));
  65                 else
  66                         error("pcap_activate() of opened pcap_t failed with %s, not PCAP_ERROR_ACTIVATED",
  67                             pcap_statustostr(status));
  68         }
  69         return 0;
  70 }
  71
  72 /* VARARGS */
  73 static void
  74 error(const char *fmt, ...)
  75 {
  76         va_list ap;
  77
  78         (void)fprintf(stderr, "reactivatetest: ");
  79         va_start(ap, fmt);
  80         (void)vfprintf(stderr, fmt, ap);
  81         va_end(ap);
  82         if (*fmt) {
  83                 fmt += strlen(fmt);
  84                 if (fmt[-1] != '\n')
  85                         (void)fputc('\n', stderr);
  86         }
  87         exit(1);
  88         /* NOTREACHED */
  89 }