1 /* $NetBSD: show.c,v 1.48 2015/03/23 18:33:17 roy Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1988, 1993 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 the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "from: @(#)route.c 8.3 (Berkeley) 3/9/94"; 36 #else 37 __RCSID("$NetBSD: show.c,v 1.48 2015/03/23 18:33:17 roy Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <sys/param.h> 42 #include <sys/protosw.h> 43 #include <sys/socket.h> 44 #include <sys/mbuf.h> 45 46 #include <arpa/inet.h> 47 #include <net/if.h> 48 #include <net/if_dl.h> 49 #include <net/if_types.h> 50 #include <net/route.h> 51 #include <netinet/in.h> 52 #include <netmpls/mpls.h> 53 54 #include <sys/sysctl.h> 55 56 #include <netdb.h> 57 #include <stdbool.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #include <unistd.h> 62 #include <err.h> 63 64 #include "keywords.h" 65 #include "rtutil.h" 66 #include "extern.h" 67 #include "prog_ops.h" 68 69 void 70 parse_show_opts(int argc, char * const *argv, int *afp, int *flagsp, 71 const char **afnamep, bool nolink) 72 { 73 const char *afname = "unspec"; 74 int af, flags; 75 76 flags = 0; 77 af = AF_UNSPEC; 78 for (; argc >= 2; argc--) { 79 if (*argv[argc - 1] != '-') 80 goto bad; 81 switch (keyword(argv[argc - 1] + 1)) { 82 case K_HOST: 83 flags |= RTF_HOST; 84 break; 85 case K_LLINFO: 86 flags |= RTF_LLINFO; 87 break; 88 case K_INET: 89 af = AF_INET; 90 afname = argv[argc - 1] + 1; 91 break; 92 #ifdef INET6 93 case K_INET6: 94 af = AF_INET6; 95 afname = argv[argc - 1] + 1; 96 break; 97 #endif 98 #ifndef SMALL 99 case K_ATALK: 100 af = AF_APPLETALK; 101 afname = argv[argc - 1] + 1; 102 break; 103 case K_MPLS: 104 af = AF_MPLS; 105 afname = argv[argc - 1] + 1; 106 break; 107 #endif /* SMALL */ 108 case K_LINK: 109 if (nolink) 110 goto bad; 111 af = AF_LINK; 112 afname = argv[argc - 1] + 1; 113 break; 114 default: 115 goto bad; 116 } 117 } 118 switch (argc) { 119 case 1: 120 case 0: 121 break; 122 default: 123 bad: 124 usage(argv[argc - 1]); 125 } 126 if (afnamep != NULL) 127 *afnamep = afname; 128 *afp = af; 129 *flagsp = flags; 130 } 131 132 /* 133 * Print routing tables. 134 */ 135 void 136 show(int argc, char *const *argv, int flags) 137 { 138 int af, rflags; 139 static int interesting = RTF_UP | RTF_GATEWAY | RTF_HOST | 140 RTF_REJECT | RTF_LLINFO | RTF_LOCAL | RTF_BROADCAST; 141 142 parse_show_opts(argc, argv, &af, &rflags, NULL, true); 143 p_rttables(af, flags, rflags, interesting); 144 } 145