diff options
Diffstat (limited to 'contrib/tcpdump/print-mobile.c')
| -rw-r--r-- | contrib/tcpdump/print-mobile.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/contrib/tcpdump/print-mobile.c b/contrib/tcpdump/print-mobile.c new file mode 100644 index 0000000..de4eab1 --- /dev/null +++ b/contrib/tcpdump/print-mobile.c @@ -0,0 +1,112 @@ +/* $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. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/tcpdump/print-mobile.c,v 1.15 2004-03-24 01:58:14 guy Exp $"; +#endif + +#include <tcpdump-stdinc.h> + +#include <stdio.h> + +#include "interface.h" +#include "addrtoname.h" +#include "extract.h" /* must come after interface.h */ + +#define MOBILE_SIZE (8) + +struct mobile_ip { + u_int16_t proto; + u_int16_t hcheck; + u_int32_t odst; + u_int32_t osrc; +}; + +#define OSRC_PRES 0x0080 /* old source is present */ + +/* + * Deencapsulate and print a mobile-tunneled IP datagram + */ +void +mobile_print(const u_char *bp, u_int length) +{ + const u_char *cp = bp +8 ; + 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 || !TTEST(*mob)) { + fputs("[|mobile]", stdout); + return; + } + fputs("mobile: ", stdout); + + proto = EXTRACT_16BITS(&mob->proto); + crc = EXTRACT_16BITS(&mob->hcheck); + if (proto & OSRC_PRES) { + osp=1; + cp +=4 ; + } + + if (osp) { + fputs("[S] ",stdout); + if (vflag) + (void)printf("%s ",ipaddr_string(&mob->osrc)); + } else { + fputs("[] ",stdout); + } + if (vflag) { + (void)printf("> %s ",ipaddr_string(&mob->odst)); + (void)printf("(oproto=%d)",proto>>8); + } + vec[0].ptr = (const u_int8_t *)(void *)mob; + vec[0].len = osp ? 12 : 8; + if (in_cksum(vec, 1)!=0) { + (void)printf(" (bad checksum %d)",crc); + } + + return; +} |
