1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
/*
LDB nsswitch module
Copyright (C) Simo Sorce 2006
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ldb-nss.h"
extern struct _ldb_nss_context *_ldb_nss_ctx;
const char *_ldb_nss_pw_attrs[] = {
"uid",
"userPassword",
"uidNumber",
"gidNumber",
"gecos",
"homeDirectory",
"loginShell",
NULL
};
NSS_STATUS _nss_ldb_setpwent(void)
{
int ret;
ret = _ldb_nss_init();
if (ret != NSS_STATUS_SUCCESS) {
return ret;
}
_ldb_nss_ctx->pw_cur = 0;
if (_ldb_nss_ctx->pw_res != NULL) {
talloc_free(_ldb_nss_ctx->pw_res);
_ldb_nss_ctx->pw_res = NULL;
}
ret = ldb_search(_ldb_nss_ctx->ldb,
_ldb_nss_ctx->base,
LDB_SCOPE_SUBTREE,
_LDB_NSS_PWENT_FILTER,
_ldb_nss_pw_attrs,
&_ldb_nss_ctx->pw_res);
if (ret != LDB_SUCCESS) {
return NSS_STATUS_UNAVAIL;
}
return NSS_STATUS_SUCCESS;
}
NSS_STATUS _nss_ldb_endpwent(void)
{
int ret;
ret = _ldb_nss_init();
if (ret != NSS_STATUS_SUCCESS) {
return ret;
}
_ldb_nss_ctx->pw_cur = 0;
if (_ldb_nss_ctx->pw_res) {
talloc_free(_ldb_nss_ctx->pw_res);
_ldb_nss_ctx->pw_res = NULL;
}
return NSS_STATUS_SUCCESS;
}
NSS_STATUS _nss_ldb_getpwent_r(struct passwd *result_buf,
char *buffer,
int buflen,
int *errnop)
{
int ret;
ret = _ldb_nss_init();
if (ret != NSS_STATUS_SUCCESS) {
return ret;
}
*errnop = 0;
if (_ldb_nss_ctx->pw_cur >= _ldb_nss_ctx->pw_res->count) {
/* already returned all entries */
return NSS_STATUS_NOTFOUND;
}
ret = _ldb_nss_fill_passwd(result_buf,
buffer,
buflen,
errnop,
_ldb_nss_ctx->pw_res->msgs[_ldb_nss_ctx->pw_cur]);
if (ret != NSS_STATUS_SUCCESS) {
return ret;
}
_ldb_nss_ctx->pw_cur++;
return NSS_STATUS_SUCCESS;
}
NSS_STATUS _nss_ldb_getpwuid_r(uid_t uid, struct passwd *result_buf, char *buffer, size_t buflen, int *errnop)
{
int ret;
char *filter;
struct ldb_result *res;
if (uid == 0) { /* we don't serve root uid by policy */
*errnop = errno = ENOENT;
return NSS_STATUS_NOTFOUND;
}
ret = _ldb_nss_init();
if (ret != NSS_STATUS_SUCCESS) {
return ret;
}
/* build the filter for this uid */
filter = talloc_asprintf(_ldb_nss_ctx, _LDB_NSS_PWUID_FILTER, uid);
if (filter == NULL) {
/* this is a fatal error */
*errnop = errno = ENOMEM;
ret = NSS_STATUS_UNAVAIL;
goto done;
}
/* search the entry */
ret = ldb_search(_ldb_nss_ctx->ldb,
_ldb_nss_ctx->base,
LDB_SCOPE_SUBTREE,
filter,
_ldb_nss_pw_attrs,
&res);
if (ret != LDB_SUCCESS) {
/* this is a fatal error */
*errnop = errno = ENOENT;
ret = NSS_STATUS_UNAVAIL;
goto done;
}
/* if none found return */
if (res->count == 0) {
*errnop = errno = ENOENT;
ret = NSS_STATUS_NOTFOUND;
goto done;
}
if (res->count != 1) {
/* this is a fatal error */
*errnop = errno = ENOENT;
ret = NSS_STATUS_UNAVAIL;
goto done;
}
/* fill in the passwd struct */
ret = _ldb_nss_fill_passwd(result_buf,
buffer,
buflen,
errnop,
res->msgs[0]);
done:
talloc_free(filter);
talloc_free(res);
return ret;
}
NSS_STATUS _nss_ldb_getpwnam_r(const char *name, struct passwd *result_buf, char *buffer, size_t buflen, int *errnop)
{
int ret;
char *filter;
struct ldb_result *res;
ret = _ldb_nss_init();
if (ret != NSS_STATUS_SUCCESS) {
return ret;
}
/* build the filter for this name */
filter = talloc_asprintf(_ldb_nss_ctx, _LDB_NSS_PWNAM_FILTER, name);
if (filter == NULL) {
/* this is a fatal error */
*errnop = errno = ENOENT;
ret = NSS_STATUS_UNAVAIL;
goto done;
}
/* search the entry */
ret = ldb_search(_ldb_nss_ctx->ldb,
_ldb_nss_ctx->base,
LDB_SCOPE_SUBTREE,
filter,
_ldb_nss_pw_attrs,
&res);
if (ret != LDB_SUCCESS) {
/* this is a fatal error */
*errnop = errno = ENOENT;
ret = NSS_STATUS_UNAVAIL;
goto done;
}
/* if none found return */
if (res->count == 0) {
*errnop = errno = ENOENT;
ret = NSS_STATUS_NOTFOUND;
goto done;
}
if (res->count != 1) {
/* this is a fatal error */
*errnop = errno = ENOENT;
ret = NSS_STATUS_UNAVAIL;
goto done;
}
/* fill in the passwd struct */
ret = _ldb_nss_fill_passwd(result_buf,
buffer,
buflen,
errnop,
res->msgs[0]);
done:
talloc_free(filter);
talloc_free(res);
return ret;
}
|
