X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/a11713da52b0a72a1cb17f00fc339d332866e9ca..HEAD:/print-mobile.c

diff --git a/print-mobile.c b/print-mobile.c
index 8d93bbf9..0cba230e 100644
--- a/print-mobile.c
+++ b/print-mobile.c
@@ -36,107 +36,70 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+/* \summary: IPv4 mobility printer */
 
-#ifndef lint
-static const char rcsid[] =
-     "@(#) $Header: /tcpdump/master/tcpdump/print-mobile.c,v 1.6 2001-06-15 22:17:33 fenner Exp $";
-#endif
+#include <config.h>
 
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/uio.h>
-#include <sys/socket.h>
+#include "netdissect-stdinc.h"
 
-#include <netinet/in.h>
-
-#include <netdb.h>
-#include <stdio.h>
-
-#include "interface.h"
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
 #include "addrtoname.h"
-#include "extract.h"		/* must come after interface.h */
+#include "extract.h"
 
 #define MOBILE_SIZE (8)
 
 struct mobile_ip {
-	u_int16_t proto;
-	u_int16_t hcheck;
-	u_int32_t odst;
-	u_int32_t osrc;
+	nd_uint16_t proto;
+	nd_uint16_t hcheck;
+	nd_uint32_t odst;
+	nd_uint32_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)
+mobile_print(netdissect_options *ndo, 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 */
 
+	ndo->ndo_protocol = "mobile";
 	mob = (const struct mobile_ip *)bp;
 
-	if (length < MOBILE_SIZE) {
-		fputs("[|mobile]", stdout);
-		return;
-	}
-	fputs("mobile: ", stdout);
+	nd_print_protocol(ndo);
+	ND_PRINT(": ");
+	ND_ICHECK_U(length, <, MOBILE_SIZE);
+	ND_TCHECK_SIZE(mob);
 
-	proto = EXTRACT_16BITS(&mob->proto);
-	crc =  EXTRACT_16BITS(&mob->hcheck);
+	proto = GET_BE_U_2(mob->proto);
+	crc =  GET_BE_U_2(mob->hcheck);
 	if (proto & OSRC_PRES) {
 		osp=1;
-		cp +=4 ;
 	}
-	
+
 	if (osp)  {
-		fputs("[S] ",stdout);
-		if (vflag)
-			(void)printf("%s ",ipaddr_string(&mob->osrc));
+		ND_PRINT("[S] ");
+		if (ndo->ndo_vflag)
+			ND_PRINT("%s ", GET_IPADDR_STRING(mob->osrc));
 	} else {
-		fputs("[] ",stdout);
+		ND_PRINT("[] ");
 	}
-	if (vflag) {
-		(void)printf("> %s ",ipaddr_string(&mob->odst));
-		(void)printf("(oproto=%d)",proto>>8);
+	if (ndo->ndo_vflag) {
+		ND_PRINT("> %s ", GET_IPADDR_STRING(mob->odst));
+		ND_PRINT("(oproto=%u)", proto>>8);
 	}
-	if (mob_in_cksum((u_short *)mob, osp ? 12 : 8)!=0) {
-		(void)printf(" (bad checksum %d)",crc);
+	vec[0].ptr = (const uint8_t *)(const void *)mob;
+	vec[0].len = osp ? 12 : 8;
+	if (in_cksum(vec, 1)!=0) {
+		ND_PRINT(" (bad checksum %u)", crc);
 	}
-
 	return;
+invalid:
+	nd_print_invalid(ndo);
 }
-
-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);
-}
-