xref: /onnv-gate/usr/src/cmd/ypcmd/ypalias.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  *
22*0Sstevel@tonic-gate  * Copyright 2001 Sun Microsystems, Inc.  All rights reserved.
23*0Sstevel@tonic-gate  * Use is subject to license terms.
24*0Sstevel@tonic-gate  */
25*0Sstevel@tonic-gate 
26*0Sstevel@tonic-gate /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
27*0Sstevel@tonic-gate /*	  All Rights Reserved   */
28*0Sstevel@tonic-gate 
29*0Sstevel@tonic-gate /*
30*0Sstevel@tonic-gate  * Portions of this source code were derived from Berkeley
31*0Sstevel@tonic-gate  * under license from the Regents of the University of
32*0Sstevel@tonic-gate  * California.
33*0Sstevel@tonic-gate  */
34*0Sstevel@tonic-gate 
35*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
36*0Sstevel@tonic-gate 
37*0Sstevel@tonic-gate #include <stdio.h>
38*0Sstevel@tonic-gate #include <string.h>
39*0Sstevel@tonic-gate #include <limits.h>
40*0Sstevel@tonic-gate #include <sys/types.h>
41*0Sstevel@tonic-gate #include <sys/statvfs.h>
42*0Sstevel@tonic-gate #include "ypsym.h"
43*0Sstevel@tonic-gate 
44*0Sstevel@tonic-gate #ifdef SYSVCONFIG
45*0Sstevel@tonic-gate extern void sysvconfig();
46*0Sstevel@tonic-gate #endif
47*0Sstevel@tonic-gate 
48*0Sstevel@tonic-gate extern int yp_getalias();
49*0Sstevel@tonic-gate 
50*0Sstevel@tonic-gate /*
51*0Sstevel@tonic-gate  *	Given a domain name, return its system v alias.
52*0Sstevel@tonic-gate  *	If there is no alias name in the alias file,
53*0Sstevel@tonic-gate  *	create one. Rule of creation is to take the 1st
54*0Sstevel@tonic-gate  *	NAME_MAX-4 characters and concatenate the last 4 characters.
55*0Sstevel@tonic-gate  *	If the alias in the file is too long, trim off the end.
56*0Sstevel@tonic-gate  */
57*0Sstevel@tonic-gate 
58*0Sstevel@tonic-gate static void
59*0Sstevel@tonic-gate mkdomain_alias(name, result)
60*0Sstevel@tonic-gate char *name, *result;
61*0Sstevel@tonic-gate {
62*0Sstevel@tonic-gate 	int retval;
63*0Sstevel@tonic-gate 	char tmpbuf[MAXNAMLEN] = {NULL};
64*0Sstevel@tonic-gate 
65*0Sstevel@tonic-gate 	retval = yp_getalias(name, result, NAME_MAX);
66*0Sstevel@tonic-gate 	if (retval == -1) {
67*0Sstevel@tonic-gate 		if ((int)strlen(name) > NAME_MAX) {
68*0Sstevel@tonic-gate 			strncpy(result, name, NAME_MAX-4);
69*0Sstevel@tonic-gate 			strncpy(&result[NAME_MAX-4],
70*0Sstevel@tonic-gate 			    &name[strlen(name)-4], 4);
71*0Sstevel@tonic-gate 			result[NAME_MAX] = '\0';
72*0Sstevel@tonic-gate 		} else
73*0Sstevel@tonic-gate 			strcpy(result, name);
74*0Sstevel@tonic-gate 	} else if ((retval) && (int)strlen(result) > NAME_MAX) {
75*0Sstevel@tonic-gate 		strncpy(tmpbuf, result, NAME_MAX);
76*0Sstevel@tonic-gate 		strcpy(result, tmpbuf);
77*0Sstevel@tonic-gate 	}
78*0Sstevel@tonic-gate }
79*0Sstevel@tonic-gate 
80*0Sstevel@tonic-gate /*
81*0Sstevel@tonic-gate  *	Given a map name, return its system v alias .
82*0Sstevel@tonic-gate  *	If there is no alias name in the alias file,
83*0Sstevel@tonic-gate  *	create one. Rule of creation is to take the 1st
84*0Sstevel@tonic-gate  *	MAXALIASLEN-4 characters and concatenate the last 4 characters.
85*0Sstevel@tonic-gate  *	If the alias in the file is too long, trim off the end.
86*0Sstevel@tonic-gate  */
87*0Sstevel@tonic-gate static void
88*0Sstevel@tonic-gate mkmap_alias(name, result)
89*0Sstevel@tonic-gate char *name, *result;
90*0Sstevel@tonic-gate {
91*0Sstevel@tonic-gate 	int retval;
92*0Sstevel@tonic-gate 	char tmpbuf[MAXNAMLEN] = {NULL};
93*0Sstevel@tonic-gate 
94*0Sstevel@tonic-gate 	retval = yp_getalias(name, result, MAXALIASLEN);
95*0Sstevel@tonic-gate 
96*0Sstevel@tonic-gate 	if (retval == -1) {
97*0Sstevel@tonic-gate 		if ((int)strlen(name) > MAXALIASLEN) {
98*0Sstevel@tonic-gate 			(void) strncpy(result, name, MAXALIASLEN-4);
99*0Sstevel@tonic-gate 			(void) strncpy(&result[MAXALIASLEN-4],
100*0Sstevel@tonic-gate 			    &name[strlen(name)-4], 4);
101*0Sstevel@tonic-gate 			result[MAXALIASLEN] = '\0';
102*0Sstevel@tonic-gate 		} else
103*0Sstevel@tonic-gate 			(void) strcpy(result, name);
104*0Sstevel@tonic-gate 	} else if ((retval) && (int)strlen(result) > MAXALIASLEN) {
105*0Sstevel@tonic-gate 		(void) strncpy(tmpbuf, result, MAXALIASLEN);
106*0Sstevel@tonic-gate 		(void) strcpy(result, tmpbuf);
107*0Sstevel@tonic-gate 	}
108*0Sstevel@tonic-gate }
109*0Sstevel@tonic-gate 
110*0Sstevel@tonic-gate #ifdef MAIN
111*0Sstevel@tonic-gate 
112*0Sstevel@tonic-gate /*
113*0Sstevel@tonic-gate  * executed only for the command ypalias
114*0Sstevel@tonic-gate  * and not when ypbind or ypserv make use
115*0Sstevel@tonic-gate  * of this file.
116*0Sstevel@tonic-gate  */
117*0Sstevel@tonic-gate 
118*0Sstevel@tonic-gate static char usage[] =
119*0Sstevel@tonic-gate "Usage:\n\
120*0Sstevel@tonic-gate 	ypalias -d domainname\n\
121*0Sstevel@tonic-gate 	ypalias mapname\n";
122*0Sstevel@tonic-gate 
123*0Sstevel@tonic-gate main(argc, argv)
124*0Sstevel@tonic-gate char **argv;
125*0Sstevel@tonic-gate {
126*0Sstevel@tonic-gate 	char result[MAXNAMLEN] = {NULL};
127*0Sstevel@tonic-gate 
128*0Sstevel@tonic-gate #ifdef SYSVCONFIG
129*0Sstevel@tonic-gate 	sysvconfig();
130*0Sstevel@tonic-gate #endif
131*0Sstevel@tonic-gate 	if (argc <= 1)
132*0Sstevel@tonic-gate 		goto err;
133*0Sstevel@tonic-gate 	if (strcmp(argv[1], "-d") == 0)
134*0Sstevel@tonic-gate 		if (argc == 3) mkdomain_alias(argv[2], (char *)&result);
135*0Sstevel@tonic-gate 		else goto err;
136*0Sstevel@tonic-gate 	else if (argc == 2)
137*0Sstevel@tonic-gate 		mkmap_alias(argv[1], (char *)&result);
138*0Sstevel@tonic-gate 	else
139*0Sstevel@tonic-gate 		goto err;
140*0Sstevel@tonic-gate 	(void) printf("%s", result);
141*0Sstevel@tonic-gate 	return (0);
142*0Sstevel@tonic-gate err:
143*0Sstevel@tonic-gate 	(void) fprintf(stderr, usage);
144*0Sstevel@tonic-gate 	return (1);
145*0Sstevel@tonic-gate }
146*0Sstevel@tonic-gate #endif /* MAIN */
147