xref: /freebsd/usr.bin/ypcat/ypcat.c (revision 6829dae12bb055451fa467da4589c43bd03b1e64)
1 /*	$OpenBSD: ypcat.c,v 1.16 2015/02/08 23:40:35 deraadt Exp $ */
2 
3 /*-
4  * SPDX-License-Identifier: BSD-2-Clause-NetBSD
5  *
6  * Copyright (c) 1992, 1993, 1996 Theo de Raadt <deraadt@theos.com>
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
19  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
22  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  * SUCH DAMAGE.
29  */
30 
31 #include <sys/cdefs.h>
32 
33 __FBSDID("$FreeBSD$");
34 
35 #include <sys/param.h>
36 #include <sys/types.h>
37 #include <sys/socket.h>
38 
39 #include <ctype.h>
40 #include <err.h>
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <unistd.h>
45 
46 #include <rpc/rpc.h>
47 #include <rpc/xdr.h>
48 #include <rpcsvc/yp.h>
49 #include <rpcsvc/ypclnt.h>
50 
51 static const struct ypalias {
52 	char *alias, *name;
53 } ypaliases[] = {
54 	{ "passwd", "passwd.byname" },
55 	{ "master.passwd", "master.passwd.byname" },
56 	{ "shadow", "shadow.byname" },
57 	{ "group", "group.byname" },
58 	{ "networks", "networks.byaddr" },
59 	{ "hosts", "hosts.byaddr" },
60 	{ "protocols", "protocols.bynumber" },
61 	{ "services", "services.byname" },
62 	{ "aliases", "mail.aliases" },
63 	{ "ethers", "ethers.byname" },
64 };
65 
66 static int key;
67 
68 static void
69 usage(void)
70 {
71 	fprintf(stderr, "%s\n%s\n",
72 	    "usage: ypcat [-kt] [-d domainname] mapname",
73 	    "       ypcat -x");
74 	exit(1);
75 }
76 
77 static int
78 printit(u_long instatus, char *inkey, int inkeylen, char *inval, int invallen,
79     void *indata)
80 {
81 	if (instatus != YP_TRUE)
82 		return (instatus);
83 	if (key)
84 		printf("%*.*s ", inkeylen, inkeylen, inkey);
85 	printf("%*.*s\n", invallen, invallen, inval);
86 	return (0);
87 }
88 
89 int
90 main(int argc, char *argv[])
91 {
92 	char *domain = NULL, *inmap;
93 	struct ypall_callback ypcb;
94 	int c, notrans, r;
95 	u_int i;
96 
97 	notrans = key = 0;
98 	while ((c = getopt(argc, argv, "xd:kt")) != -1)
99 		switch (c) {
100 		case 'x':
101 			for (i = 0; i < nitems(ypaliases); i++)
102 				printf("Use \"%s\" for \"%s\"\n",
103 				    ypaliases[i].alias, ypaliases[i].name);
104 			exit(0);
105 		case 'd':
106 			domain = optarg;
107 			break;
108 		case 't':
109 			notrans = 1;
110 			break;
111 		case 'k':
112 			key = 1;
113 			break;
114 		default:
115 			usage();
116 		}
117 
118 	if (optind + 1 != argc)
119 		usage();
120 
121 	if (domain == NULL)
122 		yp_get_default_domain(&domain);
123 
124 	inmap = argv[optind];
125 	if (notrans == 0) {
126 		for (i = 0; i < nitems(ypaliases); i++)
127 			if (strcmp(inmap, ypaliases[i].alias) == 0)
128 				inmap = ypaliases[i].name;
129 	}
130 	ypcb.foreach = printit;
131 	ypcb.data = NULL;
132 
133 	r = yp_all(domain, inmap, &ypcb);
134 	switch (r) {
135 	case 0:
136 		break;
137 	case YPERR_YPBIND:
138 		errx(1, "not running ypbind");
139 	default:
140 		errx(1, "no such map %s. Reason: %s",
141 		    inmap, yperr_string(r));
142 	}
143 	exit(0);
144 }
145