1 /* $OpenBSD: print-igrp.c,v 1.8 2015/11/16 00:16:39 mmcc Exp $ */ 2 3 /* 4 * Copyright (c) 1996, 1997 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that: (1) source code distributions 9 * retain the above copyright notice and this paragraph in its entirety, (2) 10 * distributions including binary code include the above copyright notice and 11 * this paragraph in its entirety in the documentation or other materials 12 * provided with the distribution, and (3) all advertising materials mentioning 13 * features or use of this software display the following acknowledgement: 14 * ``This product includes software developed by the University of California, 15 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 16 * the University nor the names of its contributors may be used to endorse 17 * or promote products derived from this software without specific prior 18 * written permission. 19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 20 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 22 * 23 * Initial contribution from Francis Dupont (francis.dupont@inria.fr) 24 */ 25 26 #include <sys/types.h> /* concession to AIX */ 27 #include <sys/socket.h> 28 29 #include <netinet/in.h> 30 #include <netinet/ip.h> 31 #include <netinet/ip_var.h> 32 #include <netinet/udp.h> 33 #include <netinet/udp_var.h> 34 35 #include <errno.h> 36 #include <stdio.h> 37 38 #include "interface.h" 39 #include "addrtoname.h" 40 #include "igrp.h" 41 #include "extract.h" /* must come after interface.h */ 42 43 static void 44 igrp_entry_print(struct igrprte *igr, int is_interior, int is_exterior) 45 { 46 u_int delay, bandwidth; 47 u_int metric, mtu; 48 49 if (is_interior) 50 printf(" *.%d.%d.%d", igr->igr_net[0], 51 igr->igr_net[1], igr->igr_net[2]); 52 else if (is_exterior) 53 printf(" X%d.%d.%d.0", igr->igr_net[0], 54 igr->igr_net[1], igr->igr_net[2]); 55 else 56 printf(" %d.%d.%d.0", igr->igr_net[0], 57 igr->igr_net[1], igr->igr_net[2]); 58 59 delay = EXTRACT_24BITS(igr->igr_dly); 60 bandwidth = EXTRACT_24BITS(igr->igr_bw); 61 metric = bandwidth + delay; 62 if (metric > 0xffffff) 63 metric = 0xffffff; 64 mtu = EXTRACT_16BITS(igr->igr_mtu); 65 66 printf(" d=%d b=%d r=%d l=%d M=%d mtu=%d in %d hops", 67 10 * delay, bandwidth == 0 ? 0 : 10000000 / bandwidth, 68 igr->igr_rel, igr->igr_ld, metric, 69 mtu, igr->igr_hct); 70 } 71 72 static struct tok op2str[] = { 73 { IGRP_UPDATE, "update" }, 74 { IGRP_REQUEST, "request" }, 75 { 0, NULL } 76 }; 77 78 void 79 igrp_print(const u_char *bp, u_int length, const u_char *bp2) 80 { 81 struct igrphdr *hdr; 82 struct ip *ip; 83 u_char *cp; 84 u_int nint, nsys, next; 85 86 hdr = (struct igrphdr *)bp; 87 ip = (struct ip *)bp2; 88 cp = (u_char *)(hdr + 1); 89 (void)printf("%s > %s: igrp: ", 90 ipaddr_string(&ip->ip_src), 91 ipaddr_string(&ip->ip_dst)); 92 93 /* Header */ 94 TCHECK(*hdr); 95 nint = EXTRACT_16BITS(&hdr->ig_ni); 96 nsys = EXTRACT_16BITS(&hdr->ig_ns); 97 next = EXTRACT_16BITS(&hdr->ig_nx); 98 99 (void)printf(" %s V%d edit=%d AS=%d (%d/%d/%d)", 100 tok2str(op2str, "op-#%d", hdr->ig_op), 101 hdr->ig_v, 102 hdr->ig_ed, 103 EXTRACT_16BITS(&hdr->ig_as), 104 nint, 105 nsys, 106 next); 107 108 length -= sizeof(*hdr); 109 while (length >= IGRP_RTE_SIZE) { 110 if (nint > 0) { 111 TCHECK2(*cp, IGRP_RTE_SIZE); 112 igrp_entry_print((struct igrprte *)cp, 1, 0); 113 --nint; 114 } else if (nsys > 0) { 115 TCHECK2(*cp, IGRP_RTE_SIZE); 116 igrp_entry_print((struct igrprte *)cp, 0, 0); 117 --nsys; 118 } else if (next > 0) { 119 TCHECK2(*cp, IGRP_RTE_SIZE); 120 igrp_entry_print((struct igrprte *)cp, 0, 1); 121 --next; 122 } else { 123 (void)printf("[extra bytes %d]", length); 124 break; 125 } 126 cp += IGRP_RTE_SIZE; 127 length -= IGRP_RTE_SIZE; 128 } 129 if (nint == 0 && nsys == 0 && next == 0) 130 return; 131 trunc: 132 fputs("[|igrp]", stdout); 133 } 134