1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 *
22 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
27 /* All Rights Reserved */
28
29 /*
30 * Portions of this source code were derived from Berkeley
31 * under license from the Regents of the University of
32 * California.
33 */
34
35 #include <stdio.h>
36 #include <string.h>
37 #include <limits.h>
38 #include <sys/types.h>
39 #include <sys/statvfs.h>
40 #include "ypsym.h"
41
42 #ifdef SYSVCONFIG
43 extern void sysvconfig();
44 #endif
45
46 extern int yp_getalias();
47
48 /*
49 * Given a domain name, return its system v alias.
50 * If there is no alias name in the alias file,
51 * create one. Rule of creation is to take the 1st
52 * NAME_MAX-4 characters and concatenate the last 4 characters.
53 * If the alias in the file is too long, trim off the end.
54 */
55
56 static void
mkdomain_alias(name,result)57 mkdomain_alias(name, result)
58 char *name, *result;
59 {
60 int retval;
61 char tmpbuf[MAXNAMLEN] = {NULL};
62
63 retval = yp_getalias(name, result, NAME_MAX);
64 if (retval == -1) {
65 if ((int)strlen(name) > NAME_MAX) {
66 strncpy(result, name, NAME_MAX-4);
67 strncpy(&result[NAME_MAX-4],
68 &name[strlen(name)-4], 4);
69 result[NAME_MAX] = '\0';
70 } else
71 strcpy(result, name);
72 } else if ((retval) && (int)strlen(result) > NAME_MAX) {
73 strncpy(tmpbuf, result, NAME_MAX);
74 strcpy(result, tmpbuf);
75 }
76 }
77
78 /*
79 * Given a map name, return its system v alias .
80 * If there is no alias name in the alias file,
81 * create one. Rule of creation is to take the 1st
82 * MAXALIASLEN-4 characters and concatenate the last 4 characters.
83 * If the alias in the file is too long, trim off the end.
84 */
85 static void
mkmap_alias(name,result)86 mkmap_alias(name, result)
87 char *name, *result;
88 {
89 int retval;
90 char tmpbuf[MAXNAMLEN] = {NULL};
91
92 retval = yp_getalias(name, result, MAXALIASLEN);
93
94 if (retval == -1) {
95 if ((int)strlen(name) > MAXALIASLEN) {
96 (void) strncpy(result, name, MAXALIASLEN-4);
97 (void) strncpy(&result[MAXALIASLEN-4],
98 &name[strlen(name)-4], 4);
99 result[MAXALIASLEN] = '\0';
100 } else
101 (void) strcpy(result, name);
102 } else if ((retval) && (int)strlen(result) > MAXALIASLEN) {
103 (void) strncpy(tmpbuf, result, MAXALIASLEN);
104 (void) strcpy(result, tmpbuf);
105 }
106 }
107
108 #ifdef MAIN
109
110 /*
111 * executed only for the command ypalias
112 * and not when ypbind or ypserv make use
113 * of this file.
114 */
115
116 static char usage[] =
117 "Usage:\n\
118 ypalias -d domainname\n\
119 ypalias mapname\n";
120
121 int
main(int argc,char ** argv)122 main(int argc, char **argv)
123 {
124 char result[MAXNAMLEN] = {NULL};
125
126 #ifdef SYSVCONFIG
127 sysvconfig();
128 #endif
129 if (argc <= 1)
130 goto err;
131 if (strcmp(argv[1], "-d") == 0)
132 if (argc == 3) mkdomain_alias(argv[2], (char *)&result);
133 else goto err;
134 else if (argc == 2)
135 mkmap_alias(argv[1], (char *)&result);
136 else
137 goto err;
138 (void) printf("%s", result);
139 return (0);
140 err:
141 (void) fprintf(stderr, usage);
142 return (1);
143 }
144 #endif /* MAIN */
145