The Tcpdump Group git mirrors - libpcap/blob - pcap-null.c

   1 /*
   2  * Copyright (c) 1994, 1995, 1996
   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 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <string.h>
  27
  28 #include "pcap-int.h"
  29
  30 static char nosup[] = "live packet capture not supported on this system";
  31
  32 pcap_t *
  33 pcap_create_interface(const char *device _U_, char *ebuf)
  34 {
  35         (void)strlcpy(ebuf, nosup, PCAP_ERRBUF_SIZE);
  36         return (NULL);
  37 }
  38
  39 int
  40 get_if_flags(const char *name _U_, bpf_u_int32 flags _U_, char *errbuf _U_)
  41 {
  42         /*
  43          * Nothing we can do.
  44          * XXX - is there a way to find out whether an adapter has
  45          * something plugged into it?
  46          */
  47         return (0);
  48 }
  49
  50 int
  51 pcap_platform_finddevs(pcap_if_list_t *devlistp, char *errbuf)
  52 {
  53         /*
  54          * There are no interfaces on which we can capture.
  55          */
  56         return (0);
  57 }
  58
  59 #ifdef _WIN32
  60 int
  61 pcap_lookupnet(const char *device _U_, bpf_u_int32 *netp _U_,
  62     bpf_u_int32 *maskp _U_, char *errbuf)
  63 {
  64         (void)strlcpy(errbuf, nosup, PCAP_ERRBUF_SIZE);
  65         return (-1);
  66 }
  67 #endif
  68
  69 /*
  70  * Libpcap version string.
  71  */
  72 const char *
  73 pcap_lib_version(void)
  74 {
  75         return (PCAP_VERSION_STRING);
  76 }