| /* |
| * Copyright (c) 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. |
| * |
| * Initial contribution from Francis Dupont (francis.dupont@inria.fr) |
| */ |
| |
| #ifndef lint |
| static const char rcsid[] _U_ = |
| "@(#) $Header: /tcpdump/master/tcpdump/print-igrp.c,v 1.21 2005-04-20 21:01:56 guy Exp $ (LBL)"; |
| #endif |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <tcpdump-stdinc.h> |
| |
| #include <stdio.h> |
| |
| #include "interface.h" |
| #include "addrtoname.h" |
| #include "igrp.h" |
| #include "ip.h" |
| #include "extract.h" /* must come after interface.h */ |
| |
| static void |
| igrp_entry_print(register struct igrprte *igr, register int is_interior, |
| register int is_exterior) |
| { |
| register u_int delay, bandwidth; |
| u_int metric, mtu; |
| |
| if (is_interior) |
| printf(" *.%d.%d.%d", igr->igr_net[0], |
| igr->igr_net[1], igr->igr_net[2]); |
| else if (is_exterior) |
| printf(" X%d.%d.%d.0", igr->igr_net[0], |
| igr->igr_net[1], igr->igr_net[2]); |
| else |
| printf(" %d.%d.%d.0", igr->igr_net[0], |
| igr->igr_net[1], igr->igr_net[2]); |
| |
| delay = EXTRACT_24BITS(igr->igr_dly); |
| bandwidth = EXTRACT_24BITS(igr->igr_bw); |
| metric = bandwidth + delay; |
| if (metric > 0xffffff) |
| metric = 0xffffff; |
| mtu = EXTRACT_16BITS(igr->igr_mtu); |
| |
| printf(" d=%d b=%d r=%d l=%d M=%d mtu=%d in %d hops", |
| 10 * delay, bandwidth == 0 ? 0 : 10000000 / bandwidth, |
| igr->igr_rel, igr->igr_ld, metric, |
| mtu, igr->igr_hct); |
| } |
| |
| static struct tok op2str[] = { |
| { IGRP_UPDATE, "update" }, |
| { IGRP_REQUEST, "request" }, |
| { 0, NULL } |
| }; |
| |
| void |
| igrp_print(register const u_char *bp, u_int length, const u_char *bp2 _U_) |
| { |
| register struct igrphdr *hdr; |
| register u_char *cp; |
| u_int nint, nsys, next; |
| |
| hdr = (struct igrphdr *)bp; |
| cp = (u_char *)(hdr + 1); |
| (void)printf("igrp:"); |
| |
| /* Header */ |
| TCHECK(*hdr); |
| nint = EXTRACT_16BITS(&hdr->ig_ni); |
| nsys = EXTRACT_16BITS(&hdr->ig_ns); |
| next = EXTRACT_16BITS(&hdr->ig_nx); |
| |
| (void)printf(" %s V%d edit=%d AS=%d (%d/%d/%d)", |
| tok2str(op2str, "op-#%d", IGRP_OP(hdr->ig_vop)), |
| IGRP_V(hdr->ig_vop), |
| hdr->ig_ed, |
| EXTRACT_16BITS(&hdr->ig_as), |
| nint, |
| nsys, |
| next); |
| |
| length -= sizeof(*hdr); |
| while (length >= IGRP_RTE_SIZE) { |
| if (nint > 0) { |
| TCHECK2(*cp, IGRP_RTE_SIZE); |
| igrp_entry_print((struct igrprte *)cp, 1, 0); |
| --nint; |
| } else if (nsys > 0) { |
| TCHECK2(*cp, IGRP_RTE_SIZE); |
| igrp_entry_print((struct igrprte *)cp, 0, 0); |
| --nsys; |
| } else if (next > 0) { |
| TCHECK2(*cp, IGRP_RTE_SIZE); |
| igrp_entry_print((struct igrprte *)cp, 0, 1); |
| --next; |
| } else { |
| (void)printf(" [extra bytes %d]", length); |
| break; |
| } |
| cp += IGRP_RTE_SIZE; |
| length -= IGRP_RTE_SIZE; |
| } |
| if (nint == 0 && nsys == 0 && next == 0) |
| return; |
| trunc: |
| fputs(" [|igrp]", stdout); |
| } |