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688903eb | 1 | /* Copyright (C) 1997-2018 Free Software Foundation, Inc. |
e61abf83 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
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. | |
e61abf83 UD |
9 | |
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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
e61abf83 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
e61abf83 UD |
18 | |
19 | #include <nss.h> | |
20 | #include <errno.h> | |
21 | #include <shadow.h> | |
22 | #include <string.h> | |
ec999b8e | 23 | #include <libc-lock.h> |
e61abf83 | 24 | #include <rpcsvc/nis.h> |
e61abf83 UD |
25 | |
26 | #include "nss-nisplus.h" | |
2d7da676 | 27 | #include "nisplus-parser.h" |
e61abf83 UD |
28 | |
29 | __libc_lock_define_initialized (static, lock) | |
30 | ||
fc9f33e3 | 31 | static nis_result *result; |
e61abf83 | 32 | |
48b29391 UD |
33 | /* Defined in nisplus-pwd.c. */ |
34 | extern nis_name pwd_tablename_val attribute_hidden; | |
35 | extern size_t pwd_tablename_len attribute_hidden; | |
36 | extern enum nss_status _nss_pwd_create_tablename (int *errnop); | |
2d7da676 | 37 | |
e61abf83 UD |
38 | |
39 | enum nss_status | |
51eecc4a | 40 | _nss_nisplus_setspent (int stayopen) |
e61abf83 | 41 | { |
2d7da676 | 42 | enum nss_status status = NSS_STATUS_SUCCESS; |
d71b808a | 43 | int err; |
2d7da676 | 44 | |
e61abf83 UD |
45 | __libc_lock_lock (lock); |
46 | ||
48b29391 UD |
47 | if (result != NULL) |
48 | { | |
49 | nis_freeresult (result); | |
50 | result = NULL; | |
51 | } | |
2d7da676 | 52 | |
48b29391 UD |
53 | if (pwd_tablename_val == NULL) |
54 | status = _nss_pwd_create_tablename (&err); | |
e61abf83 UD |
55 | |
56 | __libc_lock_unlock (lock); | |
57 | ||
1a544854 | 58 | return status; |
e61abf83 UD |
59 | } |
60 | ||
61 | enum nss_status | |
62 | _nss_nisplus_endspent (void) | |
63 | { | |
64 | __libc_lock_lock (lock); | |
65 | ||
48b29391 UD |
66 | if (result != NULL) |
67 | { | |
68 | nis_freeresult (result); | |
69 | result = NULL; | |
70 | } | |
e61abf83 UD |
71 | |
72 | __libc_lock_unlock (lock); | |
73 | ||
74 | return NSS_STATUS_SUCCESS; | |
75 | } | |
76 | ||
77 | static enum nss_status | |
d71b808a UD |
78 | internal_nisplus_getspent_r (struct spwd *sp, char *buffer, size_t buflen, |
79 | int *errnop) | |
e61abf83 UD |
80 | { |
81 | int parse_res; | |
82 | ||
83 | /* Get the next entry until we found a correct one. */ | |
84 | do | |
85 | { | |
60c96635 UD |
86 | nis_result *saved_res; |
87 | ||
e61abf83 UD |
88 | if (result == NULL) |
89 | { | |
60c96635 UD |
90 | saved_res = NULL; |
91 | ||
1a544854 | 92 | if (pwd_tablename_val == NULL) |
d71b808a | 93 | { |
48b29391 | 94 | enum nss_status status = _nss_pwd_create_tablename (errnop); |
d71b808a UD |
95 | |
96 | if (status != NSS_STATUS_SUCCESS) | |
97 | return status; | |
98 | } | |
e61abf83 | 99 | |
48b29391 | 100 | result = nis_first_entry (pwd_tablename_val); |
487609e3 UD |
101 | if (result == NULL) |
102 | { | |
103 | *errnop = errno; | |
104 | return NSS_STATUS_TRYAGAIN; | |
105 | } | |
e61abf83 UD |
106 | if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) |
107 | return niserr2nss (result->status); | |
108 | } | |
109 | else | |
110 | { | |
60c96635 | 111 | saved_res = result; |
48b29391 | 112 | result = nis_next_entry (pwd_tablename_val, &result->cookie); |
487609e3 UD |
113 | if (result == NULL) |
114 | { | |
115 | *errnop = errno; | |
116 | return NSS_STATUS_TRYAGAIN; | |
117 | } | |
e61abf83 | 118 | if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) |
60c96635 UD |
119 | { |
120 | nis_freeresult (saved_res); | |
121 | return niserr2nss (result->status); | |
122 | } | |
e61abf83 UD |
123 | } |
124 | ||
d71b808a UD |
125 | parse_res = _nss_nisplus_parse_spent (result, sp, buffer, |
126 | buflen, errnop); | |
a1ffb40e | 127 | if (__glibc_unlikely (parse_res == -1)) |
60c96635 UD |
128 | { |
129 | nis_freeresult (result); | |
130 | result = saved_res; | |
d71b808a | 131 | *errnop = ERANGE; |
60c96635 UD |
132 | return NSS_STATUS_TRYAGAIN; |
133 | } | |
48b29391 UD |
134 | |
135 | if (saved_res != NULL) | |
136 | nis_freeresult (saved_res); | |
137 | } | |
138 | while (!parse_res); | |
e61abf83 UD |
139 | |
140 | return NSS_STATUS_SUCCESS; | |
141 | } | |
142 | ||
143 | enum nss_status | |
d71b808a UD |
144 | _nss_nisplus_getspent_r (struct spwd *result, char *buffer, size_t buflen, |
145 | int *errnop) | |
e61abf83 UD |
146 | { |
147 | int status; | |
148 | ||
149 | __libc_lock_lock (lock); | |
150 | ||
d71b808a | 151 | status = internal_nisplus_getspent_r (result, buffer, buflen, errnop); |
e61abf83 UD |
152 | |
153 | __libc_lock_unlock (lock); | |
154 | ||
155 | return status; | |
156 | } | |
157 | ||
158 | enum nss_status | |
159 | _nss_nisplus_getspnam_r (const char *name, struct spwd *sp, | |
d71b808a | 160 | char *buffer, size_t buflen, int *errnop) |
e61abf83 UD |
161 | { |
162 | int parse_res; | |
163 | ||
48b29391 | 164 | if (pwd_tablename_val == NULL) |
d71b808a | 165 | { |
48b29391 UD |
166 | enum nss_status status = _nss_pwd_create_tablename (errnop); |
167 | ||
d71b808a UD |
168 | if (status != NSS_STATUS_SUCCESS) |
169 | return status; | |
170 | } | |
2d7da676 | 171 | |
ac9f45cf UD |
172 | if (name == NULL) |
173 | { | |
174 | *errnop = EINVAL; | |
175 | return NSS_STATUS_NOTFOUND; | |
176 | } | |
0ecb606c | 177 | |
48b29391 UD |
178 | nis_result *result; |
179 | char buf[strlen (name) + 9 + pwd_tablename_len]; | |
180 | int olderr = errno; | |
e61abf83 | 181 | |
48b29391 | 182 | snprintf (buf, sizeof (buf), "[name=%s],%s", name, pwd_tablename_val); |
0ecb606c | 183 | |
697d37b1 | 184 | result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS | USE_DGRAM, NULL, NULL); |
a334319f | 185 | |
48b29391 UD |
186 | if (result == NULL) |
187 | { | |
188 | *errnop = ENOMEM; | |
189 | return NSS_STATUS_TRYAGAIN; | |
190 | } | |
a334319f | 191 | |
a1ffb40e | 192 | if (__glibc_unlikely (niserr2nss (result->status) != NSS_STATUS_SUCCESS)) |
48b29391 UD |
193 | { |
194 | enum nss_status status = niserr2nss (result->status); | |
195 | ||
196 | __set_errno (olderr); | |
0ecb606c | 197 | |
a334319f | 198 | nis_freeresult (result); |
48b29391 UD |
199 | return status; |
200 | } | |
201 | ||
202 | parse_res = _nss_nisplus_parse_spent (result, sp, buffer, buflen, errnop); | |
203 | nis_freeresult (result); | |
a334319f | 204 | |
a1ffb40e | 205 | if (__glibc_unlikely (parse_res < 1)) |
48b29391 UD |
206 | { |
207 | if (parse_res == -1) | |
a334319f | 208 | { |
48b29391 UD |
209 | *errnop = ERANGE; |
210 | return NSS_STATUS_TRYAGAIN; | |
211 | } | |
212 | else | |
213 | { | |
214 | __set_errno (olderr); | |
215 | return NSS_STATUS_NOTFOUND; | |
a334319f | 216 | } |
a334319f | 217 | } |
48b29391 UD |
218 | |
219 | return NSS_STATUS_SUCCESS; | |
e61abf83 | 220 | } |