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 1996 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 <sys/types.h>
40#include <sys/statvfs.h>
41#include "ypsym.h"
42/* this is 14 less the space for temps pids and .pag more or less */
43
44#ifdef DEBUG
45#define	YPDBDIR		"/var/ypnew"
46#define	ALIASLIST	"/var/ypnew/aliases"
47#else
48#define	YPDBDIR		"/var/yp"
49#define	ALIASLIST	"/var/yp/aliases"
50#endif
51#define	issep(c) (c == ' ' || c == '\t')
52
53#ifdef SYSVCONFIG
54#define	isvar_sysv() (wasitsysv)
55
56static int wasitsysv = TRUE;
57static int first_time = TRUE;
58static listofnames *list = NULL;
59#endif
60
61void sysv_exit();
62extern listofnames *names();
63extern void exit();
64extern void free_listofnames();
65
66/*
67 * Setup alias file, check /var/yp filesystem type
68 * Note: The *never* checks for aliases under Solaris, so there is no need
69 *	 for this function.  As of 1.1 beta 4, I will ifdef it out (cause
70 *	 you never know...).  Should go away completely soon.
71 */
72
73#ifdef SYSVCONFIG
74void
75sysvconfig(void)
76{
77	struct statvfs statbuf;
78
79	sigset(SIGCHLD, SIG_IGN);
80	/*
81	 * if neccesary free previous list, then read in aliaslist
82	 */
83
84	if (!first_time)
85		free_listofnames(list);
86	else
87		first_time = FALSE;
88
89	list = names(ALIASLIST);
90
91	/*
92	 *	Check if YP database directory is in a system v filesystem
93	 */
94
95	if (statvfs(YPDBDIR, &statbuf) != 0) {
96		fprintf(stderr, "Cannot stat %s\n", YPDBDIR);
97		exit(-1);
98	} else {
99		/* if (strcmp(statbuf.f_basetype,"s5")) (doesn't work in k13) */
100		if (statbuf.f_namemax == 14)
101			wasitsysv = TRUE;
102		else
103			wasitsysv = FALSE;
104	}
105	sigset(SIGCHLD, (void (*)())sysvconfig);
106}
107#endif
108
109/*
110 * Match key to alias
111 */
112int
113yp_getalias(key, key_alias, maxlen)
114	char *key;
115	char *key_alias;
116	int maxlen;
117{
118	listofnames *entry;
119	char *longname;
120	char *alias;
121	char name[256];
122
123#ifndef SYSVCONFIG
124	strcpy(key_alias, key);
125	return (0);
126#else
127	/* sysvconfig must be run before this routine */
128	if (key == NULL || first_time)
129		return (-1);
130
131	if (!isvar_sysv()) {
132		strcpy(key_alias, key);
133		return (0);
134	}
135
136	for (entry = list, strcpy(name, entry->name); entry;
137		entry = entry->nextname, strcpy(name, entry->name)) {
138
139		longname = strtok(name, " \t");
140		alias = strtok(NULL, " \t\n");
141		if (longname == NULL || alias == NULL) {
142			continue;
143		}
144		if (strcmp(longname, key) == 0) {
145			if ((int)strlen(alias) > (maxlen)) {
146				strncpy(key_alias, alias, (maxlen));
147				key_alias[maxlen] = '\0';
148			} else {
149				strcpy(key_alias, alias);
150			}
151			return (0);
152		}
153	}
154	/* alias not found */
155	return (-1);
156#endif
157}
158
159/*
160 * Match alias to key
161 */
162int
163yp_getkey(key_alias, key, maxlen)
164	char *key_alias;
165	char *key;
166	int maxlen;
167{
168	listofnames *entry;
169	char *longname;
170	char *alias;
171	char name[256];
172
173#ifndef SYSVCONFIG
174	strcpy(key, key_alias);
175	return (0);
176#else
177	if (key_alias == NULL || first_time) {
178		return (-1);
179	}
180
181	if (!isvar_sysv()) {
182		strcpy(key, key_alias);
183		return (0);
184	}
185
186	for (entry = list, strcpy(name, entry->name);
187		entry; entry = entry->nextname, strcpy(name, entry->name)) {
188
189		longname = strtok(name, " \t");
190		alias = strtok(NULL, " \t\n");
191		if (alias == NULL || longname == NULL) {
192			continue;
193		}
194		if ((strcmp(alias, key_alias) == 0) ||
195		    (strncmp(alias, key_alias, maxlen) == 0)) {
196			strcpy(key, longname);
197			return (0);
198		}
199	}
200	/* key not found */
201	return (-1);
202#endif
203}
204