3 * shadow database for nss_nonlocal proxy.
5 * Copyright © 2007–2010 Anders Kaseorg <andersk@mit.edu>
7 * This file is part of nss_nonlocal.
9 * nss_nonlocal is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public License
11 * as published by the Free Software Foundation; either version 2.1 of
12 * the License, or (at your option) any later version.
14 * nss_nonlocal is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with nss_nonlocal; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
26 #include <sys/types.h>
38 #include "nsswitch-internal.h"
42 static service_user *__nss_shadow_nonlocal_database;
46 __nss_shadow_nonlocal_lookup(service_user **ni, const char *fct_name,
49 if (__nss_shadow_nonlocal_database == NULL
50 && __nss_database_lookup("shadow_nonlocal", NULL, NULL,
51 &__nss_shadow_nonlocal_database) < 0)
54 *ni = __nss_shadow_nonlocal_database;
56 *fctp = __nss_lookup_function(*ni, fct_name);
61 static service_user *spent_startp, *spent_nip;
62 static void *spent_fct_start;
64 enum nss_status (*l)(struct spwd *pwd, char *buffer, size_t buflen,
68 static const char *spent_fct_name = "getspent_r";
71 _nss_nonlocal_setspent(int stayopen)
73 enum nss_status status;
74 const struct walk_nss w = {
75 .lookup = &__nss_shadow_nonlocal_lookup, .fct_name = "setspent",
78 const __typeof__(&_nss_nonlocal_setspent) self = NULL;
79 #define args (stayopen)
82 if (status != NSS_STATUS_SUCCESS)
85 if (spent_fct_start == NULL)
86 __nss_shadow_nonlocal_lookup(&spent_startp, spent_fct_name,
88 spent_nip = spent_startp;
89 spent_fct.ptr = spent_fct_start;
90 return NSS_STATUS_SUCCESS;
94 _nss_nonlocal_endspent(void)
96 enum nss_status status;
97 const struct walk_nss w = {
98 .lookup = &__nss_shadow_nonlocal_lookup, .fct_name = "endspent",
101 const __typeof__(&_nss_nonlocal_endspent) self = NULL;
106 #include "walk_nss.h"
112 _nss_nonlocal_getspent_r(struct spwd *pwd, char *buffer, size_t buflen,
115 enum nss_status status;
116 if (spent_nip == NULL) {
117 status = _nss_nonlocal_setspent(0);
118 if (status != NSS_STATUS_SUCCESS)
122 if (spent_fct.ptr == NULL)
123 status = NSS_STATUS_UNAVAIL;
125 status = DL_CALL_FCT(spent_fct.l, (pwd, buffer, buflen, errnop));
126 if (status == NSS_STATUS_TRYAGAIN && *errnop == ERANGE)
129 if (status == NSS_STATUS_SUCCESS)
130 return NSS_STATUS_SUCCESS;
131 } while (__nss_next(&spent_nip, spent_fct_name, &spent_fct.ptr, status, 0) == 0);
134 return NSS_STATUS_NOTFOUND;
139 _nss_nonlocal_getspnam_r(const char *name, struct spwd *pwd,
140 char *buffer, size_t buflen, int *errnop)
142 enum nss_status status;
143 const struct walk_nss w = {
144 .lookup = __nss_shadow_nonlocal_lookup, .fct_name = "getspnam_r",
145 .status = &status, .errnop = errnop
147 const __typeof__(&_nss_nonlocal_getspnam_r) self = NULL;
148 #define args (name, pwd, buffer, buflen, errnop)
149 #include "walk_nss.h"
151 if (status != NSS_STATUS_SUCCESS)
154 if (strcmp(name, pwd->sp_namp) != 0) {
155 syslog(LOG_ERR, "nss_nonlocal: discarding shadow %s from lookup for shadow %s\n", pwd->sp_namp, name);
156 return NSS_STATUS_NOTFOUND;
159 return NSS_STATUS_SUCCESS;