xref: /freebsd/contrib/libpcap/pcap-null.c (revision a0409676120c1e558d0ade943019934e0f15118d)
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)pcap_strlcpy(ebuf, nosup, PCAP_ERRBUF_SIZE);
36 	return (NULL);
37 }
38 
39 int
40 pcap_platform_finddevs(pcap_if_list_t *devlistp _U_, char *errbuf _U_)
41 {
42 	/*
43 	 * There are no interfaces on which we can capture.
44 	 */
45 	return (0);
46 }
47 
48 #ifdef _WIN32
49 int
50 pcap_lookupnet(const char *device _U_, bpf_u_int32 *netp _U_,
51     bpf_u_int32 *maskp _U_, char *errbuf)
52 {
53 	(void)pcap_strlcpy(errbuf, nosup, PCAP_ERRBUF_SIZE);
54 	return (-1);
55 }
56 #endif
57 
58 /*
59  * Libpcap version string.
60  */
61 const char *
62 pcap_lib_version(void)
63 {
64 	return (PCAP_VERSION_STRING);
65 }
66