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
parse_show_opts(int argc,char * const * argv,int * afp,int * flagsp,const char ** afnamep,bool nolink)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
show(int argc,char * const * argv,int flags)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