getnattype.c revision 153881 
1/*	$FreeBSD: head/contrib/ipfilter/lib/getnattype.c 153881 2005-12-30 11:52:26Z guido $	*/
2
3/*
4 * Copyright (C) 1993-2001 by Darren Reed.
5 *
6 * See the IPFILTER.LICENCE file for details on licencing.
7 *
8 * Added redirect stuff and a variety of bug fixes. (mcn@EnGarde.com)
9 */
10#include "ipf.h"
11#include "kmem.h"
12
13#if !defined(lint)
14static const char rcsid[] = "@(#)$Id: getnattype.c,v 1.3 2004/01/17 17:26:07 darrenr Exp $";
15#endif
16
17
18/*
19 * Get a nat filter type given its kernel address.
20 */
21char *getnattype(ipnat)
22ipnat_t *ipnat;
23{
24	static char unknownbuf[20];
25	ipnat_t ipnatbuff;
26	char *which;
27
28	if (!ipnat)
29		return "???";
30	if (kmemcpy((char *)&ipnatbuff, (long)ipnat, sizeof(ipnatbuff)))
31		return "!!!";
32
33	switch (ipnatbuff.in_redir)
34	{
35	case NAT_MAP :
36		which = "MAP";
37		break;
38	case NAT_MAPBLK :
39		which = "MAP-BLOCK";
40		break;
41	case NAT_REDIRECT :
42		which = "RDR";
43		break;
44	case NAT_BIMAP :
45		which = "BIMAP";
46		break;
47	default :
48		sprintf(unknownbuf, "unknown(%04x)",
49			ipnatbuff.in_redir & 0xffffffff);
50		which = unknownbuf;
51		break;
52	}
53	return which;
54}
55