mirror of
https://git.rtems.org/rtems-libbsd/
synced 2025-05-14 06:19:16 +08:00
8440506ee8
- Update the file builder generator to handle generator specific cflags and includes. The tcpdump and libpcap have localised headers and need specific headers paths to see them. There are also module specific flags and these need to be passed to the lex and yacc generators. - Add the tcpdump support.
442 lines
12 KiB
C
442 lines
12 KiB
C
#include <machine/rtems-bsd-user-space.h>
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/*
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* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000
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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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* $FreeBSD$
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*/
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#ifndef lint
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static const char rcsid[] _U_ =
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"@(#) $Header: /tcpdump/master/tcpdump/print-ether.c,v 1.106 2008-02-06 10:47:53 guy Exp $ (LBL)";
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#endif
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#define NETDISSECT_REWORKED
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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 <tcpdump-stdinc.h>
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#include <stdio.h>
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#include <pcap.h>
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#include "interface.h"
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#include "extract.h"
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#include "addrtoname.h"
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#include "ethertype.h"
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#include "ether.h"
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const struct tok ethertype_values[] = {
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{ ETHERTYPE_IP, "IPv4" },
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{ ETHERTYPE_MPLS, "MPLS unicast" },
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{ ETHERTYPE_MPLS_MULTI, "MPLS multicast" },
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{ ETHERTYPE_IPV6, "IPv6" },
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{ ETHERTYPE_8021Q, "802.1Q" },
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{ ETHERTYPE_8021Q9100, "802.1Q-9100" },
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{ ETHERTYPE_8021QinQ, "802.1Q-QinQ" },
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{ ETHERTYPE_8021Q9200, "802.1Q-9200" },
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{ ETHERTYPE_VMAN, "VMAN" },
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{ ETHERTYPE_PUP, "PUP" },
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{ ETHERTYPE_ARP, "ARP"},
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{ ETHERTYPE_REVARP, "Reverse ARP"},
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{ ETHERTYPE_NS, "NS" },
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{ ETHERTYPE_SPRITE, "Sprite" },
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{ ETHERTYPE_TRAIL, "Trail" },
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{ ETHERTYPE_MOPDL, "MOP DL" },
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{ ETHERTYPE_MOPRC, "MOP RC" },
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{ ETHERTYPE_DN, "DN" },
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{ ETHERTYPE_LAT, "LAT" },
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{ ETHERTYPE_SCA, "SCA" },
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{ ETHERTYPE_TEB, "TEB" },
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{ ETHERTYPE_LANBRIDGE, "Lanbridge" },
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{ ETHERTYPE_DECDNS, "DEC DNS" },
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{ ETHERTYPE_DECDTS, "DEC DTS" },
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{ ETHERTYPE_VEXP, "VEXP" },
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{ ETHERTYPE_VPROD, "VPROD" },
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{ ETHERTYPE_ATALK, "Appletalk" },
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{ ETHERTYPE_AARP, "Appletalk ARP" },
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{ ETHERTYPE_IPX, "IPX" },
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{ ETHERTYPE_PPP, "PPP" },
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{ ETHERTYPE_MPCP, "MPCP" },
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{ ETHERTYPE_SLOW, "Slow Protocols" },
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{ ETHERTYPE_PPPOED, "PPPoE D" },
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{ ETHERTYPE_PPPOES, "PPPoE S" },
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{ ETHERTYPE_EAPOL, "EAPOL" },
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{ ETHERTYPE_RRCP, "RRCP" },
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{ ETHERTYPE_MS_NLB_HB, "MS NLB heartbeat" },
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{ ETHERTYPE_JUMBO, "Jumbo" },
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{ ETHERTYPE_LOOPBACK, "Loopback" },
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{ ETHERTYPE_ISO, "OSI" },
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{ ETHERTYPE_GRE_ISO, "GRE-OSI" },
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{ ETHERTYPE_CFM_OLD, "CFM (old)" },
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{ ETHERTYPE_CFM, "CFM" },
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{ ETHERTYPE_LLDP, "LLDP" },
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{ ETHERTYPE_TIPC, "TIPC"},
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{ 0, NULL}
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};
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static inline void
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ether_hdr_print(netdissect_options *ndo,
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const u_char *bp, u_int length)
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{
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register const struct ether_header *ep;
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u_int16_t ether_type;
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ep = (const struct ether_header *)bp;
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(void)ND_PRINT((ndo, "%s > %s",
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etheraddr_string(ESRC(ep)),
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etheraddr_string(EDST(ep))));
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ether_type = EXTRACT_16BITS(&ep->ether_type);
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if (!ndo->ndo_qflag) {
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if (ether_type <= ETHERMTU)
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(void)ND_PRINT((ndo, ", 802.3"));
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else
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(void)ND_PRINT((ndo, ", ethertype %s (0x%04x)",
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tok2str(ethertype_values,"Unknown", ether_type),
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ether_type));
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} else {
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if (ether_type <= ETHERMTU)
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(void)ND_PRINT((ndo, ", 802.3"));
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else
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(void)ND_PRINT((ndo, ", %s", tok2str(ethertype_values,"Unknown Ethertype (0x%04x)", ether_type)));
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}
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(void)ND_PRINT((ndo, ", length %u: ", length));
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}
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/*
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* Print an Ethernet frame.
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* This might be encapsulated within another frame; we might be passed
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* a pointer to a function that can print header information for that
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* frame's protocol, and an argument to pass to that function.
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*/
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void
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ether_print(netdissect_options *ndo,
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const u_char *p, u_int length, u_int caplen,
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void (*print_encap_header)(netdissect_options *ndo, const u_char *), const u_char *encap_header_arg)
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{
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struct ether_header *ep;
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u_int orig_length;
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u_short ether_type;
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u_short extracted_ether_type;
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if (caplen < ETHER_HDRLEN || length < ETHER_HDRLEN) {
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ND_PRINT((ndo, "[|ether]"));
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return;
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}
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if (ndo->ndo_eflag) {
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if (print_encap_header != NULL)
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(*print_encap_header)(ndo, encap_header_arg);
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ether_hdr_print(ndo, p, length);
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}
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orig_length = length;
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length -= ETHER_HDRLEN;
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caplen -= ETHER_HDRLEN;
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ep = (struct ether_header *)p;
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p += ETHER_HDRLEN;
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ether_type = EXTRACT_16BITS(&ep->ether_type);
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recurse:
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/*
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* Is it (gag) an 802.3 encapsulation?
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*/
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if (ether_type <= ETHERMTU) {
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/* Try to print the LLC-layer header & higher layers */
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if (llc_print(p, length, caplen, ESRC(ep), EDST(ep),
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&extracted_ether_type) == 0) {
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/* ether_type not known, print raw packet */
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if (!ndo->ndo_eflag) {
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if (print_encap_header != NULL)
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(*print_encap_header)(ndo, encap_header_arg);
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ether_hdr_print(ndo, (u_char *)ep, orig_length);
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}
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if (!ndo->ndo_suppress_default_print)
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ndo->ndo_default_print(ndo, p, caplen);
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}
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} else if (ether_type == ETHERTYPE_8021Q ||
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ether_type == ETHERTYPE_8021Q9100 ||
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ether_type == ETHERTYPE_8021Q9200 ||
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ether_type == ETHERTYPE_8021QinQ) {
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/*
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* Print VLAN information, and then go back and process
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* the enclosed type field.
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*/
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if (caplen < 4 || length < 4) {
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ND_PRINT((ndo, "[|vlan]"));
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return;
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}
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if (ndo->ndo_eflag) {
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u_int16_t tag = EXTRACT_16BITS(p);
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ND_PRINT((ndo, "vlan %u, p %u%s, ",
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tag & 0xfff,
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tag >> 13,
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(tag & 0x1000) ? ", CFI" : ""));
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}
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ether_type = EXTRACT_16BITS(p + 2);
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if (ndo->ndo_eflag && ether_type > ETHERMTU)
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ND_PRINT((ndo, "ethertype %s, ", tok2str(ethertype_values,"0x%04x", ether_type)));
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p += 4;
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length -= 4;
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caplen -= 4;
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goto recurse;
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} else if (ether_type == ETHERTYPE_JUMBO) {
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/*
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* Alteon jumbo frames.
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* See
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*
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* http://tools.ietf.org/html/draft-ietf-isis-ext-eth-01
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*
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* which indicates that, following the type field,
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* there's an LLC header and payload.
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*/
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/* Try to print the LLC-layer header & higher layers */
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if (llc_print(p, length, caplen, ESRC(ep), EDST(ep),
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&extracted_ether_type) == 0) {
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/* ether_type not known, print raw packet */
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if (!ndo->ndo_eflag) {
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if (print_encap_header != NULL)
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(*print_encap_header)(ndo, encap_header_arg);
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ether_hdr_print(ndo, (u_char *)ep, orig_length);
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}
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if (!ndo->ndo_suppress_default_print)
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ndo->ndo_default_print(ndo, p, caplen);
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}
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} else {
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if (ethertype_print(ndo, ether_type, p, length, caplen) == 0) {
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/* ether_type not known, print raw packet */
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if (!ndo->ndo_eflag) {
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if (print_encap_header != NULL)
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(*print_encap_header)(ndo, encap_header_arg);
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ether_hdr_print(ndo, (u_char *)ep, orig_length);
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}
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if (!ndo->ndo_suppress_default_print)
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ndo->ndo_default_print(ndo, p, caplen);
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}
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}
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}
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/*
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* This is the top level routine of the printer. 'p' points
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* to the ether header of the packet, 'h->ts' is the timestamp,
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* 'h->len' is the length of the packet off the wire, and 'h->caplen'
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* is the number of bytes actually captured.
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*/
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u_int
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ether_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h,
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const u_char *p)
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{
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ether_print(ndo, p, h->len, h->caplen, NULL, NULL);
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return (ETHER_HDRLEN);
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}
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/*
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* This is the top level routine of the printer. 'p' points
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* to the ether header of the packet, 'h->ts' is the timestamp,
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* 'h->len' is the length of the packet off the wire, and 'h->caplen'
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* is the number of bytes actually captured.
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*
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* This is for DLT_NETANALYZER, which has a 4-byte pseudo-header
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* before the Ethernet header.
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*/
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u_int
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netanalyzer_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h,
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const u_char *p)
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{
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/*
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* Fail if we don't have enough data for the Hilscher pseudo-header.
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*/
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if (h->len < 4 || h->caplen < 4) {
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printf("[|netanalyzer]");
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return (h->caplen);
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}
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/* Skip the pseudo-header. */
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ether_print(ndo, p + 4, h->len - 4, h->caplen - 4, NULL, NULL);
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return (4 + ETHER_HDRLEN);
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}
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/*
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* This is the top level routine of the printer. 'p' points
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* to the ether header of the packet, 'h->ts' is the timestamp,
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* 'h->len' is the length of the packet off the wire, and 'h->caplen'
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* is the number of bytes actually captured.
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*
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* This is for DLT_NETANALYZER_TRANSPARENT, which has a 4-byte
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* pseudo-header, a 7-byte Ethernet preamble, and a 1-byte Ethernet SOF
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* before the Ethernet header.
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*/
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u_int
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netanalyzer_transparent_if_print(netdissect_options *ndo,
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const struct pcap_pkthdr *h,
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const u_char *p)
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{
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/*
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* Fail if we don't have enough data for the Hilscher pseudo-header,
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* preamble, and SOF.
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*/
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if (h->len < 12 || h->caplen < 12) {
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printf("[|netanalyzer-transparent]");
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return (h->caplen);
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}
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/* Skip the pseudo-header, preamble, and SOF. */
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ether_print(ndo, p + 12, h->len - 12, h->caplen - 12, NULL, NULL);
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return (12 + ETHER_HDRLEN);
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}
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/*
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* Prints the packet payload, given an Ethernet type code for the payload's
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* protocol.
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*
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* Returns non-zero if it can do so, zero if the ethertype is unknown.
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*/
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int
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ethertype_print(netdissect_options *ndo,
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u_short ether_type, const u_char *p,
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u_int length, u_int caplen)
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{
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switch (ether_type) {
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case ETHERTYPE_IP:
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ip_print(ndo, p, length);
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return (1);
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#ifdef INET6
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case ETHERTYPE_IPV6:
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ip6_print(ndo, p, length);
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return (1);
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#endif /*INET6*/
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case ETHERTYPE_ARP:
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case ETHERTYPE_REVARP:
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arp_print(ndo, p, length, caplen);
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return (1);
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case ETHERTYPE_DN:
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decnet_print(/*ndo,*/p, length, caplen);
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return (1);
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case ETHERTYPE_ATALK:
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if (ndo->ndo_vflag)
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fputs("et1 ", stdout);
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atalk_print(/*ndo,*/p, length);
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return (1);
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case ETHERTYPE_AARP:
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aarp_print(/*ndo,*/p, length);
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return (1);
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case ETHERTYPE_IPX:
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ND_PRINT((ndo, "(NOV-ETHII) "));
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ipx_print(/*ndo,*/p, length);
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return (1);
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case ETHERTYPE_ISO:
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isoclns_print(/*ndo,*/p+1, length-1, length-1);
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return(1);
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case ETHERTYPE_PPPOED:
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case ETHERTYPE_PPPOES:
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case ETHERTYPE_PPPOED2:
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case ETHERTYPE_PPPOES2:
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pppoe_print(/*ndo,*/p, length);
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return (1);
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case ETHERTYPE_EAPOL:
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eap_print(ndo, p, length);
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return (1);
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case ETHERTYPE_RRCP:
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rrcp_print(ndo, p - 14 , length + 14);
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return (1);
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case ETHERTYPE_PPP:
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if (length) {
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printf(": ");
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ppp_print(/*ndo,*/p, length);
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}
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return (1);
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case ETHERTYPE_MPCP:
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mpcp_print(/*ndo,*/p, length);
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return (1);
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case ETHERTYPE_SLOW:
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slow_print(/*ndo,*/p, length);
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return (1);
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case ETHERTYPE_CFM:
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case ETHERTYPE_CFM_OLD:
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cfm_print(/*ndo,*/p, length);
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return (1);
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case ETHERTYPE_LLDP:
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lldp_print(/*ndo,*/p, length);
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return (1);
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case ETHERTYPE_LOOPBACK:
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return (1);
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case ETHERTYPE_MPLS:
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case ETHERTYPE_MPLS_MULTI:
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mpls_print(/*ndo,*/p, length);
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return (1);
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case ETHERTYPE_TIPC:
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tipc_print(ndo, p, length, caplen);
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return (1);
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case ETHERTYPE_MS_NLB_HB:
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msnlb_print(ndo, p, length);
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return (1);
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case ETHERTYPE_LAT:
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case ETHERTYPE_SCA:
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case ETHERTYPE_MOPRC:
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case ETHERTYPE_MOPDL:
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/* default_print for now */
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default:
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return (0);
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}
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}
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/*
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* Local Variables:
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* c-style: whitesmith
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* c-basic-offset: 8
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* End:
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*/
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