2 * Copyright (c) 1985, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #if defined(LIBC_SCCS) && !defined(lint)
35 static char sccsid[] = "@(#)getusershell.c 8.1 (Berkeley) 6/4/93";
36 #endif /* LIBC_SCCS and not lint */
37 /* $NetBSD: getusershell.c,v 1.17 1999/01/25 01:09:34 lukem Exp $ */
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
41 #include "namespace.h"
42 #include <sys/param.h>
52 #include <stringlist.h>
60 #include <rpcsvc/ypclnt.h>
61 #include <rpcsvc/yp_prot.h>
63 #include "un-namespace.h"
66 * Local shells should NOT be added here. They should be added in
70 static const char *const okshells[] = { _PATH_BSHELL, _PATH_CSHELL, NULL };
71 static const char *const *curshell;
72 static StringList *sl;
74 static const char *const *initshells(void);
77 * Get a list of shells from "shells" nsswitch database
85 curshell = initshells();
87 ret = (char *)*curshell;
107 curshell = initshells();
111 static int _local_initshells(void *, void *, va_list);
115 _local_initshells(rv, cb_data, ap)
122 char line[MAXPATHLEN + 2];
128 if ((fp = fopen(_PATH_SHELLS, "r")) == NULL)
132 while (fgets(cp, MAXPATHLEN + 1, fp) != NULL) {
133 while (*cp != '#' && *cp != '/' && *cp != '\0')
135 if (*cp == '#' || *cp == '\0')
138 while (!isspace(*cp) && *cp != '#' && *cp != '\0')
141 sl_add(sl, strdup(sp));
148 static int _dns_initshells(void *, void *, va_list);
152 _dns_initshells(rv, cb_data, ap)
157 char shellname[] = "shells-XXXXX";
166 if (hesiod_init(&context) == -1)
169 for (hsindex = 0; ; hsindex++) {
170 snprintf(shellname, sizeof(shellname)-1, "shells-%d", hsindex);
171 hp = hesiod_resolve(context, shellname, "shells");
173 if (errno == ENOENT) {
181 for (hpi = 0; hp[hpi]; hpi++)
192 static int _nis_initshells(void *, void *, va_list);
196 _nis_initshells(rv, cb_data, ap)
201 static char *ypdomain;
211 if (ypdomain == NULL) {
212 switch (yp_get_default_domain(&ypdomain)) {
223 * `key' and `data' point to strings dynamically allocated by
224 * the yp_... functions.
225 * `data' is directly put into the stringlist of shells.
228 if (yp_first(ypdomain, "shells", &key, &keylen, &data, &datalen))
231 data[datalen] = '\0'; /* clear trailing \n */
235 r = yp_next(ypdomain, "shells", lastkey, keylen,
236 &key, &keylen, &data, &datalen);
240 if (r == YPERR_NOMORE) {
242 * `data' and `key' ought to be NULL - do not try to free them.
251 static const char *const *
254 static const ns_dtab dtab[] = {
255 NS_FILES_CB(_local_initshells, NULL)
256 NS_DNS_CB(_dns_initshells, NULL)
257 NS_NIS_CB(_nis_initshells, NULL)
264 if (_nsdispatch(NULL, dtab, NSDB_SHELLS, "initshells", __nsdefaultsrc)
273 return (const char *const *)(sl->sl_str);