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-rw-r--r--print-ip-demux.c231
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diff --git a/print-ip-demux.c b/print-ip-demux.c
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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;
+ }
+}