1 /* 2 * Copyright (c) 1996, 1997 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and 9 * this paragraph in its entirety in the documentation or other materials 10 * provided with the distribution, and (3) all advertising materials mentioning 11 * features or use of this software display the following acknowledgement: 12 * ``This product includes software developed by the University of California, 13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14 * the University nor the names of its contributors may be used to endorse 15 * or promote products derived from this software without specific prior 16 * written permission. 17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20 * 21 * Initial contribution from Francis Dupont (francis.dupont@inria.fr) 22 */ 23 24 #ifndef lint 25 static const char rcsid[] = 26 "@(#) $Header: /tcpdump/master/tcpdump/print-igrp.c,v 1.11 1999/11/21 09:36:53 fenner Exp $ (LBL)"; 27 #endif 28 29 #ifdef HAVE_CONFIG_H 30 #include "config.h" 31 #endif 32 33 #include <sys/param.h> 34 #include <sys/types.h> /* concession to AIX */ 35 #include <sys/socket.h> 36 37 #include <netinet/in.h> 38 #include <netinet/in_systm.h> 39 #include <netinet/ip.h> 40 #include <netinet/ip_var.h> 41 #include <netinet/udp.h> 42 #include <netinet/udp_var.h> 43 44 #include <errno.h> 45 #include <stdio.h> 46 47 #include "interface.h" 48 #include "addrtoname.h" 49 #include "igrp.h" 50 #include "extract.h" /* must come after interface.h */ 51 52 static void 53 igrp_entry_print(register struct igrprte *igr, register int is_interior, 54 register int is_exterior) 55 { 56 register u_int delay, bandwidth; 57 u_int metric, mtu; 58 59 if (is_interior) 60 printf(" *.%d.%d.%d", igr->igr_net[0], 61 igr->igr_net[1], igr->igr_net[2]); 62 else if (is_exterior) 63 printf(" X%d.%d.%d.0", igr->igr_net[0], 64 igr->igr_net[1], igr->igr_net[2]); 65 else 66 printf(" %d.%d.%d.0", igr->igr_net[0], 67 igr->igr_net[1], igr->igr_net[2]); 68 69 delay = EXTRACT_24BITS(igr->igr_dly); 70 bandwidth = EXTRACT_24BITS(igr->igr_bw); 71 metric = bandwidth + delay; 72 if (metric > 0xffffff) 73 metric = 0xffffff; 74 mtu = EXTRACT_16BITS(igr->igr_mtu); 75 76 printf(" d=%d b=%d r=%d l=%d M=%d mtu=%d in %d hops", 77 10 * delay, bandwidth == 0 ? 0 : 10000000 / bandwidth, 78 igr->igr_rel, igr->igr_ld, metric, 79 mtu, igr->igr_hct); 80 } 81 82 static struct tok op2str[] = { 83 { IGRP_UPDATE, "update" }, 84 { IGRP_REQUEST, "request" }, 85 { 0, NULL } 86 }; 87 88 void 89 igrp_print(register const u_char *bp, u_int length, register const u_char *bp2) 90 { 91 register struct igrphdr *hdr; 92 register struct ip *ip; 93 register u_char *cp; 94 u_int nint, nsys, next; 95 96 hdr = (struct igrphdr *)bp; 97 ip = (struct ip *)bp2; 98 cp = (u_char *)(hdr + 1); 99 (void)printf("%s > %s: igrp: ", 100 ipaddr_string(&ip->ip_src), 101 ipaddr_string(&ip->ip_dst)); 102 103 /* Header */ 104 TCHECK(*hdr); 105 nint = EXTRACT_16BITS(&hdr->ig_ni); 106 nsys = EXTRACT_16BITS(&hdr->ig_ns); 107 next = EXTRACT_16BITS(&hdr->ig_nx); 108 109 (void)printf(" %s V%d edit=%d AS=%d (%d/%d/%d)", 110 tok2str(op2str, "op-#%d", hdr->ig_op), 111 hdr->ig_v, 112 hdr->ig_ed, 113 EXTRACT_16BITS(&hdr->ig_as), 114 nint, 115 nsys, 116 next); 117 118 length -= sizeof(*hdr); 119 while (length >= IGRP_RTE_SIZE) { 120 if (nint > 0) { 121 TCHECK2(*cp, IGRP_RTE_SIZE); 122 igrp_entry_print((struct igrprte *)cp, 1, 0); 123 --nint; 124 } else if (nsys > 0) { 125 TCHECK2(*cp, IGRP_RTE_SIZE); 126 igrp_entry_print((struct igrprte *)cp, 0, 0); 127 --nsys; 128 } else if (next > 0) { 129 TCHECK2(*cp, IGRP_RTE_SIZE); 130 igrp_entry_print((struct igrprte *)cp, 0, 1); 131 --next; 132 } else { 133 (void)printf("[extra bytes %d]", length); 134 break; 135 } 136 cp += IGRP_RTE_SIZE; 137 length -= IGRP_RTE_SIZE; 138 } 139 if (nint == 0 && nsys == 0 && next == 0) 140 return; 141 trunc: 142 fputs("[|igrp]", stdout); 143 } 144