1 /* $OpenBSD: print-igrp.c,v 1.7 2015/01/16 06:40:21 deraadt 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(register struct igrprte *igr, register int is_interior, 45 register int is_exterior) 46 { 47 register u_int delay, bandwidth; 48 u_int metric, mtu; 49 50 if (is_interior) 51 printf(" *.%d.%d.%d", igr->igr_net[0], 52 igr->igr_net[1], igr->igr_net[2]); 53 else if (is_exterior) 54 printf(" X%d.%d.%d.0", igr->igr_net[0], 55 igr->igr_net[1], igr->igr_net[2]); 56 else 57 printf(" %d.%d.%d.0", igr->igr_net[0], 58 igr->igr_net[1], igr->igr_net[2]); 59 60 delay = EXTRACT_24BITS(igr->igr_dly); 61 bandwidth = EXTRACT_24BITS(igr->igr_bw); 62 metric = bandwidth + delay; 63 if (metric > 0xffffff) 64 metric = 0xffffff; 65 mtu = EXTRACT_16BITS(igr->igr_mtu); 66 67 printf(" d=%d b=%d r=%d l=%d M=%d mtu=%d in %d hops", 68 10 * delay, bandwidth == 0 ? 0 : 10000000 / bandwidth, 69 igr->igr_rel, igr->igr_ld, metric, 70 mtu, igr->igr_hct); 71 } 72 73 static struct tok op2str[] = { 74 { IGRP_UPDATE, "update" }, 75 { IGRP_REQUEST, "request" }, 76 { 0, NULL } 77 }; 78 79 void 80 igrp_print(register const u_char *bp, u_int length, register const u_char *bp2) 81 { 82 register struct igrphdr *hdr; 83 register struct ip *ip; 84 register u_char *cp; 85 u_int nint, nsys, next; 86 87 hdr = (struct igrphdr *)bp; 88 ip = (struct ip *)bp2; 89 cp = (u_char *)(hdr + 1); 90 (void)printf("%s > %s: igrp: ", 91 ipaddr_string(&ip->ip_src), 92 ipaddr_string(&ip->ip_dst)); 93 94 /* Header */ 95 TCHECK(*hdr); 96 nint = EXTRACT_16BITS(&hdr->ig_ni); 97 nsys = EXTRACT_16BITS(&hdr->ig_ns); 98 next = EXTRACT_16BITS(&hdr->ig_nx); 99 100 (void)printf(" %s V%d edit=%d AS=%d (%d/%d/%d)", 101 tok2str(op2str, "op-#%d", hdr->ig_op), 102 hdr->ig_v, 103 hdr->ig_ed, 104 EXTRACT_16BITS(&hdr->ig_as), 105 nint, 106 nsys, 107 next); 108 109 length -= sizeof(*hdr); 110 while (length >= IGRP_RTE_SIZE) { 111 if (nint > 0) { 112 TCHECK2(*cp, IGRP_RTE_SIZE); 113 igrp_entry_print((struct igrprte *)cp, 1, 0); 114 --nint; 115 } else if (nsys > 0) { 116 TCHECK2(*cp, IGRP_RTE_SIZE); 117 igrp_entry_print((struct igrprte *)cp, 0, 0); 118 --nsys; 119 } else if (next > 0) { 120 TCHECK2(*cp, IGRP_RTE_SIZE); 121 igrp_entry_print((struct igrprte *)cp, 0, 1); 122 --next; 123 } else { 124 (void)printf("[extra bytes %d]", length); 125 break; 126 } 127 cp += IGRP_RTE_SIZE; 128 length -= IGRP_RTE_SIZE; 129 } 130 if (nint == 0 && nsys == 0 && next == 0) 131 return; 132 trunc: 133 fputs("[|igrp]", stdout); 134 } 135