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 #pragma ident "%Z%%M% %I% %E% SMI"
36
37 #include <stdio.h>
38 #include <string.h>
39 #include <limits.h>
40 #include <sys/types.h>
41 #include <sys/statvfs.h>
42 #include "ypsym.h"
43
44 #ifdef SYSVCONFIG
45 extern void sysvconfig();
46 #endif
47
48 extern int yp_getalias();
49
50 /*
51 * Given a domain name, return its system v alias.
52 * If there is no alias name in the alias file,
53 * create one. Rule of creation is to take the 1st
54 * NAME_MAX-4 characters and concatenate the last 4 characters.
55 * If the alias in the file is too long, trim off the end.
56 */
57
58 static void
mkdomain_alias(name,result)59 mkdomain_alias(name, result)
60 char *name, *result;
61 {
62 int retval;
63 char tmpbuf[MAXNAMLEN] = {NULL};
64
65 retval = yp_getalias(name, result, NAME_MAX);
66 if (retval == -1) {
67 if ((int)strlen(name) > NAME_MAX) {
68 strncpy(result, name, NAME_MAX-4);
69 strncpy(&result[NAME_MAX-4],
70 &name[strlen(name)-4], 4);
71 result[NAME_MAX] = '\0';
72 } else
73 strcpy(result, name);
74 } else if ((retval) && (int)strlen(result) > NAME_MAX) {
75 strncpy(tmpbuf, result, NAME_MAX);
76 strcpy(result, tmpbuf);
77 }
78 }
79
80 /*
81 * Given a map name, return its system v alias .
82 * If there is no alias name in the alias file,
83 * create one. Rule of creation is to take the 1st
84 * MAXALIASLEN-4 characters and concatenate the last 4 characters.
85 * If the alias in the file is too long, trim off the end.
86 */
87 static void
mkmap_alias(name,result)88 mkmap_alias(name, result)
89 char *name, *result;
90 {
91 int retval;
92 char tmpbuf[MAXNAMLEN] = {NULL};
93
94 retval = yp_getalias(name, result, MAXALIASLEN);
95
96 if (retval == -1) {
97 if ((int)strlen(name) > MAXALIASLEN) {
98 (void) strncpy(result, name, MAXALIASLEN-4);
99 (void) strncpy(&result[MAXALIASLEN-4],
100 &name[strlen(name)-4], 4);
101 result[MAXALIASLEN] = '\0';
102 } else
103 (void) strcpy(result, name);
104 } else if ((retval) && (int)strlen(result) > MAXALIASLEN) {
105 (void) strncpy(tmpbuf, result, MAXALIASLEN);
106 (void) strcpy(result, tmpbuf);
107 }
108 }
109
110 #ifdef MAIN
111
112 /*
113 * executed only for the command ypalias
114 * and not when ypbind or ypserv make use
115 * of this file.
116 */
117
118 static char usage[] =
119 "Usage:\n\
120 ypalias -d domainname\n\
121 ypalias mapname\n";
122
123 int
main(argc,argv)124 main(argc, argv)
125 char **argv;
126 {
127 char result[MAXNAMLEN] = {NULL};
128
129 #ifdef SYSVCONFIG
130 sysvconfig();
131 #endif
132 if (argc <= 1)
133 goto err;
134 if (strcmp(argv[1], "-d") == 0)
135 if (argc == 3) mkdomain_alias(argv[2], (char *)&result);
136 else goto err;
137 else if (argc == 2)
138 mkmap_alias(argv[1], (char *)&result);
139 else
140 goto err;
141 (void) printf("%s", result);
142 return (0);
143 err:
144 (void) fprintf(stderr, usage);
145 return (1);
146 }
147 #endif /* MAIN */
148