133 lines
3.8 KiB
C
133 lines
3.8 KiB
C
/*
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* Copyright (c) 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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* Initial contribution from Francis Dupont (francis.dupont@inria.fr)
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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-igrp.c,v 1.18.2.2 2003/11/16 08:51:26 guy Exp $ (LBL)";
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#endif
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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 "interface.h"
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#include "addrtoname.h"
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#include "igrp.h"
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#include "ip.h"
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#include "extract.h" /* must come after interface.h */
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static void
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igrp_entry_print(register struct igrprte *igr, register int is_interior,
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register int is_exterior)
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{
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register u_int delay, bandwidth;
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u_int metric, mtu;
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if (is_interior)
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printf(" *.%d.%d.%d", igr->igr_net[0],
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igr->igr_net[1], igr->igr_net[2]);
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else if (is_exterior)
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printf(" X%d.%d.%d.0", igr->igr_net[0],
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igr->igr_net[1], igr->igr_net[2]);
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else
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printf(" %d.%d.%d.0", igr->igr_net[0],
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igr->igr_net[1], igr->igr_net[2]);
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delay = EXTRACT_24BITS(igr->igr_dly);
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bandwidth = EXTRACT_24BITS(igr->igr_bw);
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metric = bandwidth + delay;
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if (metric > 0xffffff)
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metric = 0xffffff;
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mtu = EXTRACT_16BITS(igr->igr_mtu);
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printf(" d=%d b=%d r=%d l=%d M=%d mtu=%d in %d hops",
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10 * delay, bandwidth == 0 ? 0 : 10000000 / bandwidth,
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igr->igr_rel, igr->igr_ld, metric,
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mtu, igr->igr_hct);
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}
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static struct tok op2str[] = {
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{ IGRP_UPDATE, "update" },
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{ IGRP_REQUEST, "request" },
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{ 0, NULL }
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};
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void
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igrp_print(register const u_char *bp, u_int length, register const u_char *bp2)
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{
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register struct igrphdr *hdr;
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register struct ip *ip;
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register u_char *cp;
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u_int nint, nsys, next;
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hdr = (struct igrphdr *)bp;
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ip = (struct ip *)bp2;
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cp = (u_char *)(hdr + 1);
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(void)printf("igrp:");
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/* Header */
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TCHECK(*hdr);
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nint = EXTRACT_16BITS(&hdr->ig_ni);
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nsys = EXTRACT_16BITS(&hdr->ig_ns);
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next = EXTRACT_16BITS(&hdr->ig_nx);
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(void)printf(" %s V%d edit=%d AS=%d (%d/%d/%d)",
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tok2str(op2str, "op-#%d", IGRP_OP(hdr->ig_vop)),
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IGRP_V(hdr->ig_vop),
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hdr->ig_ed,
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EXTRACT_16BITS(&hdr->ig_as),
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nint,
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nsys,
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next);
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length -= sizeof(*hdr);
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while (length >= IGRP_RTE_SIZE) {
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if (nint > 0) {
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TCHECK2(*cp, IGRP_RTE_SIZE);
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igrp_entry_print((struct igrprte *)cp, 1, 0);
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--nint;
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} else if (nsys > 0) {
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TCHECK2(*cp, IGRP_RTE_SIZE);
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igrp_entry_print((struct igrprte *)cp, 0, 0);
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--nsys;
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} else if (next > 0) {
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TCHECK2(*cp, IGRP_RTE_SIZE);
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igrp_entry_print((struct igrprte *)cp, 0, 1);
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--next;
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} else {
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(void)printf(" [extra bytes %d]", length);
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break;
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}
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cp += IGRP_RTE_SIZE;
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length -= IGRP_RTE_SIZE;
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}
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if (nint == 0 && nsys == 0 && next == 0)
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return;
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trunc:
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fputs(" [|igrp]", stdout);
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}
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