1 /* $OpenBSD: print-igrp.c,v 1.4 2007/10/07 16:41:05 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 #ifndef lint 27 static const char rcsid[] = 28 "@(#) $Id: print-igrp.c,v 1.4 2007/10/07 16:41:05 deraadt Exp $ (LBL)"; 29 #endif 30 31 #include <sys/param.h> 32 #include <sys/types.h> /* concession to AIX */ 33 #include <sys/socket.h> 34 35 #include <netinet/in.h> 36 #include <netinet/in_systm.h> 37 #include <netinet/ip.h> 38 #include <netinet/ip_var.h> 39 #include <netinet/udp.h> 40 #include <netinet/udp_var.h> 41 42 #include <errno.h> 43 #include <stdio.h> 44 45 #include "interface.h" 46 #include "addrtoname.h" 47 #include "igrp.h" 48 #include "extract.h" /* must come after interface.h */ 49 50 static void 51 igrp_entry_print(register struct igrprte *igr, register int is_interior, 52 register int is_exterior) 53 { 54 register u_int delay, bandwidth; 55 u_int metric, mtu; 56 57 if (is_interior) 58 printf(" *.%d.%d.%d", igr->igr_net[0], 59 igr->igr_net[1], igr->igr_net[2]); 60 else if (is_exterior) 61 printf(" X%d.%d.%d.0", igr->igr_net[0], 62 igr->igr_net[1], igr->igr_net[2]); 63 else 64 printf(" %d.%d.%d.0", igr->igr_net[0], 65 igr->igr_net[1], igr->igr_net[2]); 66 67 delay = EXTRACT_24BITS(igr->igr_dly); 68 bandwidth = EXTRACT_24BITS(igr->igr_bw); 69 metric = bandwidth + delay; 70 if (metric > 0xffffff) 71 metric = 0xffffff; 72 mtu = EXTRACT_16BITS(igr->igr_mtu); 73 74 printf(" d=%d b=%d r=%d l=%d M=%d mtu=%d in %d hops", 75 10 * delay, bandwidth == 0 ? 0 : 10000000 / bandwidth, 76 igr->igr_rel, igr->igr_ld, metric, 77 mtu, igr->igr_hct); 78 } 79 80 static struct tok op2str[] = { 81 { IGRP_UPDATE, "update" }, 82 { IGRP_REQUEST, "request" }, 83 { 0, NULL } 84 }; 85 86 void 87 igrp_print(register const u_char *bp, u_int length, register const u_char *bp2) 88 { 89 register struct igrphdr *hdr; 90 register struct ip *ip; 91 register u_char *cp; 92 u_int nint, nsys, next; 93 94 hdr = (struct igrphdr *)bp; 95 ip = (struct ip *)bp2; 96 cp = (u_char *)(hdr + 1); 97 (void)printf("%s > %s: igrp: ", 98 ipaddr_string(&ip->ip_src), 99 ipaddr_string(&ip->ip_dst)); 100 101 /* Header */ 102 TCHECK(*hdr); 103 nint = EXTRACT_16BITS(&hdr->ig_ni); 104 nsys = EXTRACT_16BITS(&hdr->ig_ns); 105 next = EXTRACT_16BITS(&hdr->ig_nx); 106 107 (void)printf(" %s V%d edit=%d AS=%d (%d/%d/%d)", 108 tok2str(op2str, "op-#%d", hdr->ig_op), 109 hdr->ig_v, 110 hdr->ig_ed, 111 EXTRACT_16BITS(&hdr->ig_as), 112 nint, 113 nsys, 114 next); 115 116 length -= sizeof(*hdr); 117 while (length >= IGRP_RTE_SIZE) { 118 if (nint > 0) { 119 TCHECK2(*cp, IGRP_RTE_SIZE); 120 igrp_entry_print((struct igrprte *)cp, 1, 0); 121 --nint; 122 } else if (nsys > 0) { 123 TCHECK2(*cp, IGRP_RTE_SIZE); 124 igrp_entry_print((struct igrprte *)cp, 0, 0); 125 --nsys; 126 } else if (next > 0) { 127 TCHECK2(*cp, IGRP_RTE_SIZE); 128 igrp_entry_print((struct igrprte *)cp, 0, 1); 129 --next; 130 } else { 131 (void)printf("[extra bytes %d]", length); 132 break; 133 } 134 cp += IGRP_RTE_SIZE; 135 length -= IGRP_RTE_SIZE; 136 } 137 if (nint == 0 && nsys == 0 && next == 0) 138 return; 139 trunc: 140 fputs("[|igrp]", stdout); 141 } 142