1 /* 2 * Copyright (c) 1996 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 char rcsid[] = 26 "@(#) $Header: print-igrp.c,v 1.4 96/07/23 14:04:55 leres Exp $ (LBL)"; 27 #endif 28 29 #include <sys/param.h> 30 #include <sys/socket.h> 31 32 #include <netinet/in.h> 33 #include <netinet/in_systm.h> 34 #include <netinet/ip.h> 35 #include <netinet/ip_var.h> 36 #include <netinet/udp.h> 37 #include <netinet/udp_var.h> 38 39 #include <errno.h> 40 #include <stdio.h> 41 42 #include "addrtoname.h" 43 #include "interface.h" 44 #include "igrp.h" 45 #include "extract.h" /* must come after interface.h */ 46 47 static void 48 igrp_entry_print(register struct igrprte *igr, register int is_interior, 49 register int is_exterior) 50 { 51 register u_int delay, bandwidth; 52 u_int metric, mtu; 53 54 if (is_interior) 55 printf(" *.%d.%d.%d", igr->igr_net[0], 56 igr->igr_net[1], igr->igr_net[2]); 57 else if (is_exterior) 58 printf(" X%d.%d.%d.0", igr->igr_net[0], 59 igr->igr_net[1], igr->igr_net[2]); 60 else 61 printf(" %d.%d.%d.0", igr->igr_net[0], 62 igr->igr_net[1], igr->igr_net[2]); 63 64 delay = EXTRACT_24BITS(igr->igr_dly); 65 bandwidth = EXTRACT_24BITS(igr->igr_bw); 66 metric = bandwidth + delay; 67 if (metric > 0xffffff) 68 metric = 0xffffff; 69 mtu = EXTRACT_16BITS(igr->igr_mtu); 70 71 printf(" d=%d b=%d r=%d l=%d M=%d mtu=%d in %d hops", 72 10 * delay, bandwidth == 0 ? 0 : 10000000 / bandwidth, 73 igr->igr_rel, igr->igr_ld, metric, 74 mtu, igr->igr_hct); 75 } 76 77 static struct tok op2str[] = { 78 { IGRP_UPDATE, "update" }, 79 { IGRP_REQUEST, "request" }, 80 { 0, NULL } 81 }; 82 83 void 84 igrp_print(register const u_char *bp, u_int length, register const u_char *bp2) 85 { 86 register struct igrphdr *hdr; 87 register struct ip *ip; 88 register u_char *cp; 89 u_int nint, nsys, next; 90 91 hdr = (struct igrphdr *)bp; 92 ip = (struct ip *)bp2; 93 cp = (u_char *)(hdr + 1); 94 (void)printf("%s > %s: igrp: ", 95 ipaddr_string(&ip->ip_src), 96 ipaddr_string(&ip->ip_dst)); 97 98 /* Header */ 99 TCHECK(*hdr); 100 nint = EXTRACT_16BITS(&hdr->ig_ni); 101 nsys = EXTRACT_16BITS(&hdr->ig_ns); 102 next = EXTRACT_16BITS(&hdr->ig_nx); 103 104 (void)printf(" %s V%d edit=%d AS=%d (%d/%d/%d)", 105 tok2str(op2str, "op-#%d", hdr->ig_op), 106 hdr->ig_v, 107 hdr->ig_ed, 108 EXTRACT_16BITS(&hdr->ig_as), 109 nint, 110 nsys, 111 next); 112 113 length -= sizeof(*hdr); 114 while (length >= IGRP_RTE_SIZE) { 115 if (nint > 0) { 116 TCHECK2(*cp, IGRP_RTE_SIZE); 117 igrp_entry_print((struct igrprte *)cp, 1, 0); 118 --nint; 119 } else if (nsys > 0) { 120 TCHECK2(*cp, IGRP_RTE_SIZE); 121 igrp_entry_print((struct igrprte *)cp, 0, 0); 122 --nsys; 123 } else if (next > 0) { 124 TCHECK2(*cp, IGRP_RTE_SIZE); 125 igrp_entry_print((struct igrprte *)cp, 0, 1); 126 --next; 127 } else { 128 (void)printf("[extra bytes %d]", length); 129 break; 130 } 131 cp += IGRP_RTE_SIZE; 132 length -= IGRP_RTE_SIZE; 133 } 134 if (nint == 0 && nsys == 0 && next == 0) 135 return; 136 trunc: 137 fputs("[|igrp]", stdout); 138 } 139