xref: /freebsd/contrib/libpcap/pcap-null.c (revision afdbf109c6a661a729938f68211054a0a50d38ac)
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 #include <config.h>
23 
24 #include <string.h>
25 
26 #include "pcap-int.h"
27 
28 static char nosup[] = "live packet capture not supported on this system";
29 
30 pcap_t *
pcapint_create_interface(const char * device _U_,char * ebuf)31 pcapint_create_interface(const char *device _U_, char *ebuf)
32 {
33 	(void)pcapint_strlcpy(ebuf, nosup, PCAP_ERRBUF_SIZE);
34 	return (NULL);
35 }
36 
37 int
pcapint_platform_finddevs(pcap_if_list_t * devlistp _U_,char * errbuf _U_)38 pcapint_platform_finddevs(pcap_if_list_t *devlistp _U_, char *errbuf _U_)
39 {
40 	/*
41 	 * There are no interfaces on which we can capture.
42 	 */
43 	return (0);
44 }
45 
46 #ifdef _WIN32
47 int
pcap_lookupnet(const char * device _U_,bpf_u_int32 * netp _U_,bpf_u_int32 * maskp _U_,char * errbuf)48 pcap_lookupnet(const char *device _U_, bpf_u_int32 *netp _U_,
49     bpf_u_int32 *maskp _U_, char *errbuf)
50 {
51 	(void)pcapint_strlcpy(errbuf, nosup, PCAP_ERRBUF_SIZE);
52 	return (-1);
53 }
54 #endif
55 
56 /*
57  * Libpcap version string.
58  */
59 const char *
pcap_lib_version(void)60 pcap_lib_version(void)
61 {
62 	return (PCAP_VERSION_STRING);
63 }
64