Local changes: - Update some local modifications to fix build - Synch config.h with upstream as much as possible Changelog: https://git.tcpdump.org/tcpdump/blob/55bc126b0216cfe409b8d6bd378f65679d136ddf:/CHANGES Reviewed by: emaste Obtained from: https://www.tcpdump.org/release/tcpdump-4.99.4.tar.gz Sponsored by: The FreeBSD Foundation
232 lines
5.2 KiB
C
232 lines
5.2 KiB
C
/*
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* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/* \summary: IPv4/IPv6 payload printer */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "netdissect-stdinc.h"
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#include "netdissect.h"
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#include "addrtoname.h"
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#include "extract.h"
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#include "ip.h"
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#include "ipproto.h"
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void
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ip_demux_print(netdissect_options *ndo,
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const u_char *bp,
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u_int length, u_int ver, int fragmented, u_int ttl_hl,
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uint8_t nh, const u_char *iph)
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{
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int advance;
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const char *p_name;
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advance = 0;
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again:
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switch (nh) {
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case IPPROTO_AH:
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if (!ND_TTEST_1(bp)) {
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ndo->ndo_protocol = "ah";
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nd_print_trunc(ndo);
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break;
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}
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nh = GET_U_1(bp);
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advance = ah_print(ndo, bp);
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if (advance <= 0)
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break;
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bp += advance;
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length -= advance;
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goto again;
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case IPPROTO_ESP:
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{
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esp_print(ndo, bp, length, iph, ver, fragmented, ttl_hl);
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/*
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* Either this has decrypted the payload and
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* printed it, in which case there's nothing more
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* to do, or it hasn't, in which case there's
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* nothing more to do.
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*/
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break;
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}
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case IPPROTO_IPCOMP:
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{
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ipcomp_print(ndo, bp);
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/*
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* Either this has decompressed the payload and
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* printed it, in which case there's nothing more
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* to do, or it hasn't, in which case there's
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* nothing more to do.
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*/
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break;
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}
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case IPPROTO_SCTP:
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sctp_print(ndo, bp, iph, length);
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break;
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case IPPROTO_DCCP:
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dccp_print(ndo, bp, iph, length);
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break;
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case IPPROTO_TCP:
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tcp_print(ndo, bp, length, iph, fragmented);
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break;
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case IPPROTO_UDP:
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udp_print(ndo, bp, length, iph, fragmented, ttl_hl);
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break;
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case IPPROTO_ICMP:
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if (ver == 4)
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icmp_print(ndo, bp, length, iph, fragmented);
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else {
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ND_PRINT("[%s requires IPv4]",
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tok2str(ipproto_values,"unknown",nh));
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nd_print_invalid(ndo);
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}
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break;
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case IPPROTO_ICMPV6:
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if (ver == 6)
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icmp6_print(ndo, bp, length, iph, fragmented);
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else {
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ND_PRINT("[%s requires IPv6]",
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tok2str(ipproto_values,"unknown",nh));
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nd_print_invalid(ndo);
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}
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break;
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case IPPROTO_PIGP:
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/*
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* XXX - the current IANA protocol number assignments
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* page lists 9 as "any private interior gateway
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* (used by Cisco for their IGRP)" and 88 as
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* "EIGRP" from Cisco.
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*
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* Recent BSD <netinet/in.h> headers define
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* IP_PROTO_PIGP as 9 and IP_PROTO_IGRP as 88.
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* We define IP_PROTO_PIGP as 9 and
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* IP_PROTO_EIGRP as 88; those names better
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* match was the current protocol number
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* assignments say.
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*/
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igrp_print(ndo, bp, length);
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break;
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case IPPROTO_EIGRP:
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eigrp_print(ndo, bp, length);
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break;
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case IPPROTO_ND:
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ND_PRINT(" nd %u", length);
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break;
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case IPPROTO_EGP:
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egp_print(ndo, bp, length);
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break;
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case IPPROTO_OSPF:
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if (ver == 6)
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ospf6_print(ndo, bp, length);
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else
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ospf_print(ndo, bp, length, iph);
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break;
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case IPPROTO_IGMP:
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if (ver == 4)
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igmp_print(ndo, bp, length);
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else {
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ND_PRINT("[%s requires IPv4]",
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tok2str(ipproto_values,"unknown",nh));
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nd_print_invalid(ndo);
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}
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break;
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case IPPROTO_IPV4:
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/* ipv4-in-ip encapsulation */
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ip_print(ndo, bp, length);
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break;
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case IPPROTO_IPV6:
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/* ip6-in-ip encapsulation */
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ip6_print(ndo, bp, length);
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break;
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case IPPROTO_RSVP:
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rsvp_print(ndo, bp, length);
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break;
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case IPPROTO_GRE:
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gre_print(ndo, bp, length);
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break;
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case IPPROTO_MOBILE:
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mobile_print(ndo, bp, length);
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break;
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case IPPROTO_PIM:
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pim_print(ndo, bp, length, iph);
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break;
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case IPPROTO_VRRP:
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if (ndo->ndo_packettype == PT_CARP) {
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carp_print(ndo, bp, length, ttl_hl);
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} else {
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vrrp_print(ndo, bp, length, iph, ttl_hl, ver);
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}
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break;
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case IPPROTO_PGM:
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pgm_print(ndo, bp, length, iph);
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break;
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case IPPROTO_ETHERNET:
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if (ver == 6)
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ether_print(ndo, bp, length, ND_BYTES_AVAILABLE_AFTER(bp), NULL, NULL);
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else {
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ND_PRINT("[%s requires IPv6]",
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tok2str(ipproto_values,"unknown",nh));
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nd_print_invalid(ndo);
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}
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break;
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case IPPROTO_NONE:
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ND_PRINT("no next header");
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break;
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default:
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if (ndo->ndo_nflag==0 && (p_name = netdb_protoname(nh)) != NULL)
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ND_PRINT(" %s", p_name);
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else
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ND_PRINT(" ip-proto-%u", nh);
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ND_PRINT(" %u", length);
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break;
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}
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}
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