phunix/external/bsd/tcpdump/dist/print-mobile.c
David van Moolenbroek b636d99d91 Import NetBSD tcpdump(8)
For now, printing of Sun RPC requests is disabled because we do not
yet have the RPC header files.  This should affect basically noone,
as we do not have any RPC-based programs yet, for the same reason.

Change-Id: Ie7818faaaacdc104d8b2c37a68866b4ce18247d6
2017-03-21 22:00:21 +00:00

108 lines
3.4 KiB
C

/* NetBSD: print-mobile.c,v 1.2 1998/09/30 08:57:01 hwr Exp */
/*
* (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Heiko W.Rupp <hwr@pilhuhn.de>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: print-mobile.c,v 1.4 2014/11/20 03:05:03 christos Exp $");
#endif
#define NETDISSECT_REWORKED
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <tcpdump-stdinc.h>
#include "interface.h"
#include "addrtoname.h"
#include "extract.h" /* must come after interface.h */
#define MOBILE_SIZE (8)
struct mobile_ip {
uint16_t proto;
uint16_t hcheck;
uint32_t odst;
uint32_t osrc;
};
#define OSRC_PRES 0x0080 /* old source is present */
/*
* Deencapsulate and print a mobile-tunneled IP datagram
*/
void
mobile_print(netdissect_options *ndo, const u_char *bp, u_int length)
{
const struct mobile_ip *mob;
struct cksum_vec vec[1];
u_short proto,crc;
u_char osp =0; /* old source address present */
mob = (const struct mobile_ip *)bp;
if (length < MOBILE_SIZE || !ND_TTEST(*mob)) {
ND_PRINT((ndo, "[|mobile]"));
return;
}
ND_PRINT((ndo, "mobile: "));
proto = EXTRACT_16BITS(&mob->proto);
crc = EXTRACT_16BITS(&mob->hcheck);
if (proto & OSRC_PRES) {
osp=1;
}
if (osp) {
ND_PRINT((ndo, "[S] "));
if (ndo->ndo_vflag)
ND_PRINT((ndo, "%s ", ipaddr_string(ndo, &mob->osrc)));
} else {
ND_PRINT((ndo, "[] "));
}
if (ndo->ndo_vflag) {
ND_PRINT((ndo, "> %s ", ipaddr_string(ndo, &mob->odst)));
ND_PRINT((ndo, "(oproto=%d)", proto>>8));
}
vec[0].ptr = (const uint8_t *)(void *)mob;
vec[0].len = osp ? 12 : 8;
if (in_cksum(vec, 1)!=0) {
ND_PRINT((ndo, " (bad checksum %d)", crc));
}
}