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/*
* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
/* \summary: IPv4/IPv6 payload printer */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "netdissect-stdinc.h"
#include "netdissect.h"
#include "addrtoname.h"
#include "extract.h"
#include "ip.h"
#include "ipproto.h"
void
ip_demux_print(netdissect_options *ndo,
const u_char *bp,
u_int length, u_int ver, int fragmented, u_int ttl_hl,
uint8_t nh, const u_char *iph)
{
int advance;
const char *p_name;
advance = 0;
again:
switch (nh) {
case IPPROTO_AH:
if (!ND_TTEST_1(bp)) {
ndo->ndo_protocol = "ah";
nd_print_trunc(ndo);
break;
}
nh = GET_U_1(bp);
advance = ah_print(ndo, bp);
if (advance <= 0)
break;
bp += advance;
length -= advance;
goto again;
case IPPROTO_ESP:
{
esp_print(ndo, bp, length, iph, ver, fragmented, ttl_hl);
/*
* Either this has decrypted the payload and
* printed it, in which case there's nothing more
* to do, or it hasn't, in which case there's
* nothing more to do.
*/
break;
}
case IPPROTO_IPCOMP:
{
ipcomp_print(ndo, bp);
/*
* Either this has decompressed the payload and
* printed it, in which case there's nothing more
* to do, or it hasn't, in which case there's
* nothing more to do.
*/
break;
}
case IPPROTO_SCTP:
sctp_print(ndo, bp, iph, length);
break;
case IPPROTO_DCCP:
dccp_print(ndo, bp, iph, length);
break;
case IPPROTO_TCP:
tcp_print(ndo, bp, length, iph, fragmented);
break;
case IPPROTO_UDP:
udp_print(ndo, bp, length, iph, fragmented, ttl_hl);
break;
case IPPROTO_ICMP:
if (ver == 4)
icmp_print(ndo, bp, length, iph, fragmented);
else {
ND_PRINT("[%s requires IPv4]",
tok2str(ipproto_values,"unknown",nh));
nd_print_invalid(ndo);
}
break;
case IPPROTO_ICMPV6:
if (ver == 6)
icmp6_print(ndo, bp, length, iph, fragmented);
else {
ND_PRINT("[%s requires IPv6]",
tok2str(ipproto_values,"unknown",nh));
nd_print_invalid(ndo);
}
break;
case IPPROTO_PIGP:
/*
* XXX - the current IANA protocol number assignments
* page lists 9 as "any private interior gateway
* (used by Cisco for their IGRP)" and 88 as
* "EIGRP" from Cisco.
*
* Recent BSD <netinet/in.h> headers define
* IP_PROTO_PIGP as 9 and IP_PROTO_IGRP as 88.
* We define IP_PROTO_PIGP as 9 and
* IP_PROTO_EIGRP as 88; those names better
* match was the current protocol number
* assignments say.
*/
igrp_print(ndo, bp, length);
break;
case IPPROTO_EIGRP:
eigrp_print(ndo, bp, length);
break;
case IPPROTO_ND:
ND_PRINT(" nd %u", length);
break;
case IPPROTO_EGP:
egp_print(ndo, bp, length);
break;
case IPPROTO_OSPF:
if (ver == 6)
ospf6_print(ndo, bp, length);
else
ospf_print(ndo, bp, length, iph);
break;
case IPPROTO_IGMP:
if (ver == 4)
igmp_print(ndo, bp, length);
else {
ND_PRINT("[%s requires IPv4]",
tok2str(ipproto_values,"unknown",nh));
nd_print_invalid(ndo);
}
break;
case IPPROTO_IPV4:
/* ipv4-in-ip encapsulation */
ip_print(ndo, bp, length);
break;
case IPPROTO_IPV6:
/* ip6-in-ip encapsulation */
ip6_print(ndo, bp, length);
break;
case IPPROTO_RSVP:
rsvp_print(ndo, bp, length);
break;
case IPPROTO_GRE:
gre_print(ndo, bp, length);
break;
case IPPROTO_MOBILE:
mobile_print(ndo, bp, length);
break;
case IPPROTO_PIM:
pim_print(ndo, bp, length, iph);
break;
case IPPROTO_VRRP:
if (ndo->ndo_packettype == PT_CARP) {
carp_print(ndo, bp, length, ttl_hl);
} else {
vrrp_print(ndo, bp, length, iph, ttl_hl, ver);
}
break;
case IPPROTO_PGM:
pgm_print(ndo, bp, length, iph);
break;
case IPPROTO_ETHERNET:
if (ver == 6)
ether_print(ndo, bp, length, ND_BYTES_AVAILABLE_AFTER(bp), NULL, NULL);
else {
ND_PRINT("[%s requires IPv6]",
tok2str(ipproto_values,"unknown",nh));
nd_print_invalid(ndo);
}
break;
case IPPROTO_NONE:
ND_PRINT("no next header");
break;
default:
if (ndo->ndo_nflag==0 && (p_name = netdb_protoname(nh)) != NULL)
ND_PRINT(" %s", p_name);
else
ND_PRINT(" ip-proto-%u", nh);
ND_PRINT(" %u", length);
break;
}
}
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