Virgin import of tcpdump.org tcpdump v3.5

1 files changed, 143 insertions, 0 deletions

diff --git a/contrib/tcpdump/print-mobile.c b/contrib/tcpdump/print-mobile.c
new file mode 100644
index 0000000..4c09ace
--- /dev/null
+++ b/contrib/tcpdump/print-mobile.c
@@ -0,0 +1,143 @@
+/*	$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[] =
+     "@(#) $Header: /tcpdump/master/tcpdump/print-mobile.c,v 1.2.2.1 2000/01/11 06:58:26 fenner Exp $";
+#endif
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+
+#include <netdb.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 */
+
+static u_int16_t mob_in_cksum(u_short *p, int len);
+
+/*
+ * 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;
+	u_short proto,crc;
+	u_char osp =0;			/* old source address present */
+
+	mob = (const struct mobile_ip *)bp;
+
+	if (length < MOBILE_SIZE) {
+		fputs("[|mobile]", stdout);
+		return;
+	}
+
+	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);
+	}
+	if (mob_in_cksum((u_short *)mob, osp ? 12 : 8)!=0) {
+		(void)printf(" (bad checksum %d)",crc);
+	}
+
+	return;
+}
+
+static u_int16_t mob_in_cksum(u_short *p, int len)
+{
+	u_int32_t sum = 0; 
+	int nwords = len >> 1;
+  
+	while (nwords-- != 0)
+		sum += *p++;
+  
+	if (len & 1) {
+		union {
+			u_int16_t w;
+			u_int8_t c[2]; 
+		} u;
+		u.c[0] = *(u_char *)p;
+		u.c[1] = 0;
+		sum += u.w;
+	} 
+
+	/* end-around-carry */
+	sum = (sum >> 16) + (sum & 0xffff);
+	sum += (sum >> 16);
+	return (~sum);
+}
+