1 /* $NetBSD: show.c,v 1.50 2016/04/04 07:37:07 ozaki-r 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 1.50 2016/04/04 07:37:07 ozaki-r Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <sys/param.h> 42 #include <sys/protosw.h> 43 #include <sys/socket.h> 44 45 #include <arpa/inet.h> 46 #include <net/if.h> 47 #include <net/if_dl.h> 48 #include <net/if_types.h> 49 #include <net/route.h> 50 #include <netinet/in.h> 51 #include <netmpls/mpls.h> 52 53 #include <sys/sysctl.h> 54 55 #include <netdb.h> 56 #include <stdbool.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <unistd.h> 61 #include <err.h> 62 63 #include "keywords.h" 64 #include "rtutil.h" 65 #include "extern.h" 66 #include "prog_ops.h" 67 68 void 69 parse_show_opts(int argc, char * const *argv, int *afp, int *flagsp, 70 const char **afnamep, bool nolink) 71 { 72 const char *afname = "unspec"; 73 int af, flags; 74 75 flags = 0; 76 af = AF_UNSPEC; 77 for (; argc >= 2; argc--) { 78 if (*argv[argc - 1] != '-') 79 goto bad; 80 switch (keyword(argv[argc - 1] + 1)) { 81 case K_HOST: 82 flags |= RTF_HOST; 83 break; 84 case K_INET: 85 af = AF_INET; 86 afname = argv[argc - 1] + 1; 87 break; 88 #ifdef INET6 89 case K_INET6: 90 af = AF_INET6; 91 afname = argv[argc - 1] + 1; 92 break; 93 #endif 94 #ifndef SMALL 95 case K_ATALK: 96 af = AF_APPLETALK; 97 afname = argv[argc - 1] + 1; 98 break; 99 case K_MPLS: 100 af = AF_MPLS; 101 afname = argv[argc - 1] + 1; 102 break; 103 #endif /* SMALL */ 104 case K_LINK: 105 if (nolink) 106 goto bad; 107 af = AF_LINK; 108 afname = argv[argc - 1] + 1; 109 break; 110 default: 111 goto bad; 112 } 113 } 114 switch (argc) { 115 case 1: 116 case 0: 117 break; 118 default: 119 bad: 120 usage(argv[argc - 1]); 121 } 122 if (afnamep != NULL) 123 *afnamep = afname; 124 *afp = af; 125 *flagsp = flags; 126 } 127 128 /* 129 * Print routing tables. 130 */ 131 void 132 show(int argc, char *const *argv, int flags) 133 { 134 int af, rflags; 135 static int interesting = RTF_UP | RTF_GATEWAY | RTF_HOST | 136 RTF_REJECT | RTF_LOCAL | RTF_BROADCAST; 137 138 parse_show_opts(argc, argv, &af, &rflags, NULL, true); 139 p_rttables(af, flags, rflags, interesting); 140 } 141