contrib/tcpdump/print-ip.c

340 	       struct ip_print_demux_state *ipds)
345 	switch (ipds->nh) {
348 		if (!ND_TTEST(*ipds->cp)) {
352 		ipds->nh = *ipds->cp;
353 		ipds->advance = ah_print(ndo, ipds->cp);
354 		if (ipds->advance <= 0)
356 		ipds->cp += ipds->advance;
357 		ipds->len -= ipds->advance;
363 		ipds->advance = esp_print(ndo, ipds->cp, ipds->len,
364 				    (const u_char *)ipds->ip,
366 		if (ipds->advance <= 0)
368 		ipds->cp += ipds->advance;
369 		ipds->len -= ipds->advance + padlen;
370 		ipds->nh = enh & 0xff;
376 		ipcomp_print(ndo, ipds->cp);
387 		sctp_print(ndo, ipds->cp, (const u_char *)ipds->ip, ipds->len);
391 		dccp_print(ndo, ipds->cp, (const u_char *)ipds->ip, ipds->len);
396 		tcp_print(ndo, ipds->cp, ipds->len, (const u_char *)ipds->ip,
397 			  ipds->off & (IP_MF|IP_OFFMASK));
402 		udp_print(ndo, ipds->cp, ipds->len, (const u_char *)ipds->ip,
403 			  ipds->off & (IP_MF|IP_OFFMASK));
408 		icmp_print(ndo, ipds->cp, ipds->len, (const u_char *)ipds->ip,
409 			   ipds->off & (IP_MF|IP_OFFMASK));
426 		igrp_print(ndo, ipds->cp, ipds->len);
430 		eigrp_print(ndo, ipds->cp, ipds->len);
434 		ND_PRINT((ndo, " nd %d", ipds->len));
438 		egp_print(ndo, ipds->cp, ipds->len);
442 		ospf_print(ndo, ipds->cp, ipds->len, (const u_char *)ipds->ip);
446 		igmp_print(ndo, ipds->cp, ipds->len);
451 		ip_print(ndo, ipds->cp, ipds->len);
460 		ip6_print(ndo, ipds->cp, ipds->len);
464 		rsvp_print(ndo, ipds->cp, ipds->len);
469 		gre_print(ndo, ipds->cp, ipds->len);
473 		mobile_print(ndo, ipds->cp, ipds->len);
477 		pim_print(ndo, ipds->cp, ipds->len, (const u_char *)ipds->ip);
484 					     ipaddr_string(ndo, &ipds->ip->ip_src),
485 					     ipaddr_string(ndo, &ipds->ip->ip_dst)));
486 			carp_print(ndo, ipds->cp, ipds->len, ipds->ip->ip_ttl);
490 					     ipaddr_string(ndo, &ipds->ip->ip_src),
491 					     ipaddr_string(ndo, &ipds->ip->ip_dst)));
492 			vrrp_print(ndo, ipds->cp, ipds->len,
493 				(const u_char *)ipds->ip, ipds->ip->ip_ttl);
498 		pgm_print(ndo, ipds->cp, ipds->len, (const u_char *)ipds->ip);
503 		pfsync_ip_print(ndo, ipds->cp, ipds->len);
508 		if (ndo->ndo_nflag==0 && (p_name = netdb_protoname(ipds->nh)) != NULL)
511 			ND_PRINT((ndo, " ip-proto-%d", ipds->nh));
512 		ND_PRINT((ndo, " %d", ipds->len));
545 	struct ip_print_demux_state *ipds=&ipd;
552 	ipds->ip = (const struct ip *)bp;
553 	ND_TCHECK(ipds->ip->ip_vhl);
554 	if (IP_V(ipds->ip) != 4) { /* print version and fail if != 4 */
555 	    if (IP_V(ipds->ip) == 6)
558 	      ND_PRINT((ndo, "IP%u ", IP_V(ipds->ip)));
564 	ND_TCHECK(*ipds->ip);
569 	hlen = IP_HL(ipds->ip) * 4;
575 	ipds->len = EXTRACT_16BITS(&ipds->ip->ip_len);
576 	if (length < ipds->len)
578 			ipds->len - length));
579 	if (ipds->len < hlen) {
581             if (ipds->len) {
582                 ND_PRINT((ndo, "bad-len %u", ipds->len));
587                 ipds->len = length;
590             ND_PRINT((ndo, "bad-len %u", ipds->len));
598 	ipend = bp + ipds->len;
602 	ipds->len -= hlen;
604 	ipds->off = EXTRACT_16BITS(&ipds->ip->ip_off);
607             ND_PRINT((ndo, "(tos 0x%x", (int)ipds->ip->ip_tos));
609             switch (ipds->ip->ip_tos & 0x03) {
627             if (ipds->ip->ip_ttl >= 1)
628                 ND_PRINT((ndo, ", ttl %u", ipds->ip->ip_ttl));
637                          EXTRACT_16BITS(&ipds->ip->ip_id),
638                          (ipds->off & 0x1fff) * 8,
639                          bittok2str(ip_frag_values, "none", ipds->off&0xe000),
640                          tok2str(ipproto_values,"unknown",ipds->ip->ip_p),
641                          ipds->ip->ip_p));
643             ND_PRINT((ndo, ", length %u", EXTRACT_16BITS(&ipds->ip->ip_len)));
647                 ip_optprint(ndo, (const u_char *)(ipds->ip + 1), hlen - sizeof(struct ip));
651 	    if (!ndo->ndo_Kflag && (const u_char *)ipds->ip + hlen <= ndo->ndo_snapend) {
652 	        vec[0].ptr = (const uint8_t *)(const void *)ipds->ip;
656 		    ip_sum = EXTRACT_16BITS(&ipds->ip->ip_sum);
669 	if ((ipds->off & 0x1fff) == 0) {
670 		ipds->cp = (const u_char *)ipds->ip + hlen;
671 		ipds->nh = ipds->ip->ip_p;
673 		if (ipds->nh != IPPROTO_TCP && ipds->nh != IPPROTO_UDP &&
674 		    ipds->nh != IPPROTO_SCTP && ipds->nh != IPPROTO_DCCP) {
676 				     ipaddr_string(ndo, &ipds->ip->ip_src),
677 				     ipaddr_string(ndo, &ipds->ip->ip_dst)));
679 		ip_print_demux(ndo, ipds);
693 		ND_PRINT((ndo, "%s > %s:", ipaddr_string(ndo, &ipds->ip->ip_src),
694 		          ipaddr_string(ndo, &ipds->ip->ip_dst)));
695 		if (!ndo->ndo_nflag && (p_name = netdb_protoname(ipds->ip->ip_p)) != NULL)
698 			ND_PRINT((ndo, " ip-proto-%d", ipds->ip->ip_p));