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: print-igrp.c,v 1.8 97/05/28 12:52:47 leres Exp $ (LBL)"; 27 #endif 28 29 #include <sys/param.h> 30 #include <sys/types.h> /* concession to AIX */ 31 #include <sys/socket.h> 32 33 #include <netinet/in.h> 34 #include <netinet/in_systm.h> 35 #include <netinet/ip.h> 36 #include <netinet/ip_var.h> 37 #include <netinet/udp.h> 38 #include <netinet/udp_var.h> 39 40 #include <errno.h> 41 #include <stdio.h> 42 43 #include "interface.h" 44 #include "addrtoname.h" 45 #include "igrp.h" 46 #include "extract.h" /* must come after interface.h */ 47 48 static void 49 igrp_entry_print(register struct igrprte *igr, register int is_interior, 50 register int is_exterior) 51 { 52 register u_int delay, bandwidth; 53 u_int metric, mtu; 54 55 if (is_interior) 56 printf(" *.%d.%d.%d", igr->igr_net[0], 57 igr->igr_net[1], igr->igr_net[2]); 58 else if (is_exterior) 59 printf(" X%d.%d.%d.0", igr->igr_net[0], 60 igr->igr_net[1], igr->igr_net[2]); 61 else 62 printf(" %d.%d.%d.0", igr->igr_net[0], 63 igr->igr_net[1], igr->igr_net[2]); 64 65 delay = EXTRACT_24BITS(igr->igr_dly); 66 bandwidth = EXTRACT_24BITS(igr->igr_bw); 67 metric = bandwidth + delay; 68 if (metric > 0xffffff) 69 metric = 0xffffff; 70 mtu = EXTRACT_16BITS(igr->igr_mtu); 71 72 printf(" d=%d b=%d r=%d l=%d M=%d mtu=%d in %d hops", 73 10 * delay, bandwidth == 0 ? 0 : 10000000 / bandwidth, 74 igr->igr_rel, igr->igr_ld, metric, 75 mtu, igr->igr_hct); 76 } 77 78 static struct tok op2str[] = { 79 { IGRP_UPDATE, "update" }, 80 { IGRP_REQUEST, "request" }, 81 { 0, NULL } 82 }; 83 84 void 85 igrp_print(register const u_char *bp, u_int length, register const u_char *bp2) 86 { 87 register struct igrphdr *hdr; 88 register struct ip *ip; 89 register u_char *cp; 90 u_int nint, nsys, next; 91 92 hdr = (struct igrphdr *)bp; 93 ip = (struct ip *)bp2; 94 cp = (u_char *)(hdr + 1); 95 (void)printf("%s > %s: igrp: ", 96 ipaddr_string(&ip->ip_src), 97 ipaddr_string(&ip->ip_dst)); 98 99 /* Header */ 100 TCHECK(*hdr); 101 nint = EXTRACT_16BITS(&hdr->ig_ni); 102 nsys = EXTRACT_16BITS(&hdr->ig_ns); 103 next = EXTRACT_16BITS(&hdr->ig_nx); 104 105 (void)printf(" %s V%d edit=%d AS=%d (%d/%d/%d)", 106 tok2str(op2str, "op-#%d", hdr->ig_op), 107 hdr->ig_v, 108 hdr->ig_ed, 109 EXTRACT_16BITS(&hdr->ig_as), 110 nint, 111 nsys, 112 next); 113 114 length -= sizeof(*hdr); 115 while (length >= IGRP_RTE_SIZE) { 116 if (nint > 0) { 117 TCHECK2(*cp, IGRP_RTE_SIZE); 118 igrp_entry_print((struct igrprte *)cp, 1, 0); 119 --nint; 120 } else if (nsys > 0) { 121 TCHECK2(*cp, IGRP_RTE_SIZE); 122 igrp_entry_print((struct igrprte *)cp, 0, 0); 123 --nsys; 124 } else if (next > 0) { 125 TCHECK2(*cp, IGRP_RTE_SIZE); 126 igrp_entry_print((struct igrprte *)cp, 0, 1); 127 --next; 128 } else { 129 (void)printf("[extra bytes %d]", length); 130 break; 131 } 132 cp += IGRP_RTE_SIZE; 133 length -= IGRP_RTE_SIZE; 134 } 135 if (nint == 0 && nsys == 0 && next == 0) 136 return; 137 trunc: 138 fputs("[|igrp]", stdout); 139 } 140