1 /* Copyright (C) 1996-2020 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
24 #include <libc-lock.h>
25 #include <rpcsvc/yp.h>
26 #include <rpcsvc/ypclnt.h>
32 /* Get the declaration of the parser function. */
34 #define STRUCTURE spwd
36 #include <nss/nss_files/files-parse.c>
38 /* Protect global state against multiple changers */
39 __libc_lock_define_initialized (static, lock)
41 static bool new_start = true;
42 static bool ent_adjunct_used;
47 _nss_nis_setspent (int stayopen)
49 return _nss_nis_endspent ();
53 _nss_nis_endspent (void)
55 __libc_lock_lock (lock);
58 ent_adjunct_used = false;
63 __libc_lock_unlock (lock);
65 return NSS_STATUS_SUCCESS;
67 libnss_nis_hidden_def (_nss_nis_endspent)
69 static enum nss_status
70 internal_nis_getspent_r (struct spwd *sp, char *buffer, size_t buflen,
74 if (__glibc_unlikely (yp_get_default_domain (&domain)))
75 return NSS_STATUS_UNAVAIL;
77 /* Get the next entry until we found a correct one. */
89 yperr = yp_first (domain, "shadow.byname", &outkey, &keylen, &result,
91 if (__builtin_expect (yperr == YPERR_MAP, 0)
92 && (_nsl_default_nss () & NSS_FLAG_ADJUNCT_AS_SHADOW))
95 yperr = yp_first (domain, "passwd.adjunct.byname", &outkey,
96 &keylen, &result, &len);
97 ent_adjunct_used = true;
101 yperr = yp_next (domain, (ent_adjunct_used
102 ? "passwd.adjunct.byname" : "shadow.byname"),
103 oldkey, oldkeylen, &outkey, &keylen, &result, &len);
105 if (__glibc_unlikely (yperr != YPERR_SUCCESS))
107 enum nss_status retval = yperr2nss (yperr);
109 if (retval == NSS_STATUS_TRYAGAIN)
114 if (__builtin_expect ((size_t) (len + (ent_adjunct_used ? 3 : 1))
119 return NSS_STATUS_TRYAGAIN;
122 char *p = strncpy (buffer, result, len);
123 if (ent_adjunct_used)
124 /* This is an ugly trick. The format of passwd.adjunct.byname almost
125 matches the shadow.byname format except that the last two fields
126 are missing. Synthesize them by marking them empty. */
127 strcpy (&buffer[len], "::");
134 parse_res = _nss_files_parse_spent (p, sp, (void *) buffer, buflen,
136 if (__builtin_expect (parse_res == -1, 0))
140 return NSS_STATUS_TRYAGAIN;
150 return NSS_STATUS_SUCCESS;
154 _nss_nis_getspent_r (struct spwd *result, char *buffer, size_t buflen,
159 __libc_lock_lock (lock);
161 status = internal_nis_getspent_r (result, buffer, buflen, errnop);
163 __libc_lock_unlock (lock);
169 _nss_nis_getspnam_r (const char *name, struct spwd *sp,
170 char *buffer, size_t buflen, int *errnop)
175 return NSS_STATUS_UNAVAIL;
177 const size_t name_len = strlen (name);
180 if (__glibc_unlikely (yp_get_default_domain (&domain)))
181 return NSS_STATUS_UNAVAIL;
183 bool adjunct_used = false;
186 int yperr = yp_match (domain, "shadow.byname", name, name_len, &result,
188 if (__builtin_expect (yperr == YPERR_MAP, 0)
189 && (_nsl_default_nss () & NSS_FLAG_ADJUNCT_AS_SHADOW))
192 yperr = yp_match (domain, "passwd.adjunct.byname", name, name_len,
197 if (__glibc_unlikely (yperr != YPERR_SUCCESS))
199 enum nss_status retval = yperr2nss (yperr);
201 if (retval == NSS_STATUS_TRYAGAIN)
206 if (__glibc_unlikely ((size_t) (len + (adjunct_used ? 3 : 1)) > buflen))
210 return NSS_STATUS_TRYAGAIN;
213 char *p = strncpy (buffer, result, len);
214 if (__builtin_expect (adjunct_used, false))
215 /* This is an ugly trick. The format of passwd.adjunct.byname almost
216 matches the shadow.byname format except that the last two fields
217 are missing. Synthesize them by marking them empty. */
218 strcpy (&buffer[len], "::");
225 int parse_res = _nss_files_parse_spent (p, sp, (void *) buffer, buflen,
227 if (__glibc_unlikely (parse_res < 1))
230 return NSS_STATUS_TRYAGAIN;
232 return NSS_STATUS_NOTFOUND;
234 return NSS_STATUS_SUCCESS;