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
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <shadow.h>
#include <stdlib.h>
#include "ldap_common.h"
/* shadow attributes filters */
#define _S_CN "cn"
#define _S_UID "uid"
#define _S_USERPASSWORD "userpassword"
#define _S_FLAG "shadowflag"
#define _F_GETSPNAM "(&(objectClass=shadowAccount)(uid=%s))"
#define _F_GETSPNAM_SSD "(&(%%s)(uid=%s))"
static const char *sp_attrs[] = {
_S_UID,
_S_USERPASSWORD,
_S_FLAG,
(char *)NULL
};
extern ns_ldap_attr_t *getattr(ns_ldap_result_t *result, int i);
/*
* _nss_ldap_shadow2ent is the data marshaling method for the passwd getXbyY
* (e.g., getspnam(), getspent()) backend processes. This method is called after
* a successful ldap search has been performed. This method will parse the
* ldap search values into struct spwd = argp->buf.buffer which the frontend
* process expects. Three error conditions are expected and returned to
* nsswitch.
*/
static int
_nss_ldap_shadow2ent(ldap_backend_ptr be, nss_XbyY_args_t *argp)
{
int i = 0;
int nss_result;
int buflen = (int)0;
unsigned long len = 0L;
char *buffer = (char *)NULL;
char *ceiling = (char *)NULL;
char *pw_passwd = (char *)NULL;
char *nullstring = (char *)NULL;
char np[] = "*NP*";
ns_ldap_result_t *result = be->result;
ns_ldap_attr_t *attrptr;
long ltmp = (long)0L;
struct spwd *spd = (struct spwd *)NULL;
#ifdef DEBUG
(void) fprintf(stdout, "\n[getspent.c: _nss_ldap_shadow2ent]\n");
#endif /* DEBUG */
buffer = argp->buf.buffer;
buflen = (size_t)argp->buf.buflen;
if (!argp->buf.result) {
nss_result = (int)NSS_STR_PARSE_ERANGE;
goto result_spd2ent;
}
spd = (struct spwd *)argp->buf.result;
ceiling = buffer + buflen;
nullstring = (buffer + (buflen - 1));
/* Default values */
spd->sp_lstchg = -1; spd->sp_min = -1;
spd->sp_max = -1; spd->sp_warn = -1;
spd->sp_inact = -1; spd->sp_expire = -1;
spd->sp_flag = 0; spd->sp_pwdp = NULL;
nss_result = (int)NSS_STR_PARSE_SUCCESS;
(void) memset(buffer, 0, buflen);
attrptr = getattr(result, 0);
if (attrptr == NULL) {
nss_result = (int)NSS_STR_PARSE_PARSE;
goto result_spd2ent;
}
for (i = 0; i < result->entry->attr_count; i++) {
attrptr = getattr(result, i);
if (strcasecmp(attrptr->attrname, _S_UID) == 0) {
if ((attrptr->attrvalue[0] == NULL) ||
(len = strlen(attrptr->attrvalue[0])) < 1) {
nss_result = (int)NSS_STR_PARSE_PARSE;
goto result_spd2ent;
}
spd->sp_namp = buffer;
buffer += len + 1;
if (buffer >= ceiling) {
nss_result = (int)NSS_STR_PARSE_ERANGE;
goto result_spd2ent;
}
(void) strcpy(spd->sp_namp, attrptr->attrvalue[0]);
continue;
}
if (strcasecmp(attrptr->attrname, _S_USERPASSWORD) == 0) {
if (attrptr->attrvalue[0] == '\0') {
spd->sp_pwdp = nullstring;
nss_result = (int)NSS_STR_PARSE_PARSE;
goto result_spd2ent;
}
pw_passwd = attrptr->attrvalue[0];
if (pw_passwd) {
char *tmp;
if ((tmp = strstr(pw_passwd, "{crypt}"))
!= NULL) {
if (tmp != pw_passwd)
pw_passwd = np;
else
pw_passwd += 7;
} else if ((tmp = strstr(pw_passwd, "{CRYPT}"))
!= NULL) {
if (tmp != pw_passwd)
pw_passwd = np;
else
pw_passwd += 7;
} else {
pw_passwd = np;
}
}
len = (unsigned long)strlen(pw_passwd);
if (len < 1) {
spd->sp_pwdp = nullstring;
} else {
spd->sp_pwdp = buffer;
buffer += len + 1;
if (buffer >= ceiling) {
nss_result = (int)NSS_STR_PARSE_ERANGE;
goto result_spd2ent;
}
}
(void) strcpy(spd->sp_pwdp, pw_passwd);
}
/*
* Ignore the following password aging related attributes:
* -- shadowlastchange
* -- shadowmin
* -- shadowmax
* -- shadowwarning
* -- shadowinactive
* -- shadowexpire
* This is because the LDAP naming service does not
* really support the password aging fields defined
* in the shadow structure. These fields, sp_lstchg,
* sp_min, sp_max, sp_warn, sp_inact, and sp_expire,
* have been set to -1.
*/
if (strcasecmp(attrptr->attrname, _S_FLAG) == 0) {
if (attrptr->attrvalue[0] == '\0') {
nss_result = (int)NSS_STR_PARSE_PARSE;
goto result_spd2ent;
}
errno = 0;
ltmp = strtol(attrptr->attrvalue[0], (char **)NULL, 10);
if (errno != 0) {
nss_result = (int)NSS_STR_PARSE_PARSE;
goto result_spd2ent;
}
spd->sp_flag = (int)ltmp;
continue;
}
}
/* we will not allow for an empty password to be */
/* returned to the front end as this is not a supported */
/* configuration. Since we got to this point without */
/* the password being set, we assume that no password was */
/* set on the server which is consider a misconfiguration. */
/* We will proceed and set the password to *NP* as no password */
/* is not supported */
if (spd->sp_pwdp == NULL) {
spd->sp_pwdp = buffer;
buffer += strlen(np) + 1;
if (buffer >= ceiling) {
nss_result = (int)NSS_STR_PARSE_ERANGE;
goto result_spd2ent;
}
strcpy(spd->sp_pwdp, np);
}
#ifdef DEBUG
(void) fprintf(stdout, "\n[getspent.c: _nss_ldap_shadow2ent]\n");
(void) fprintf(stdout, " sp_namp: [%s]\n", spd->sp_namp);
(void) fprintf(stdout, " sp_pwdp: [%s]\n", spd->sp_pwdp);
(void) fprintf(stdout, " sp_latchg: [%d]\n", spd->sp_lstchg);
(void) fprintf(stdout, " sp_min: [%d]\n", spd->sp_min);
(void) fprintf(stdout, " sp_max: [%d]\n", spd->sp_max);
(void) fprintf(stdout, " sp_warn: [%d]\n", spd->sp_warn);
(void) fprintf(stdout, " sp_inact: [%d]\n", spd->sp_inact);
(void) fprintf(stdout, " sp_expire: [%d]\n", spd->sp_expire);
(void) fprintf(stdout, " sp_flag: [%d]\n", spd->sp_flag);
#endif /* DEBUG */
result_spd2ent:
(void) __ns_ldap_freeResult(&be->result);
return ((int)nss_result);
}
/*
* getbynam gets a passwd entry by uid name. This function constructs an ldap
* search filter using the name invocation parameter and the getspnam search
* filter defined. Once the filter is constructed we search for a matching
* entry and marshal the data results into struct shadow for the frontend
* process. The function _nss_ldap_shadow2ent performs the data marshaling.
*/
static nss_status_t
getbynam(ldap_backend_ptr be, void *a)
{
nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
char searchfilter[SEARCHFILTERLEN];
char userdata[SEARCHFILTERLEN];
char name[SEARCHFILTERLEN + 1];
int len;
int ret;
#ifdef DEBUG
(void) fprintf(stdout, "\n[getspent.c: getbynam]\n");
#endif /* DEBUG */
if (_ldap_filter_name(name, argp->key.name, sizeof (name)) != 0)
return ((nss_status_t)NSS_NOTFOUND);
ret = snprintf(searchfilter, sizeof (searchfilter), _F_GETSPNAM, name);
if (ret >= sizeof (searchfilter) || ret < 0)
return ((nss_status_t)NSS_NOTFOUND);
ret = snprintf(userdata, sizeof (userdata), _F_GETSPNAM_SSD, name);
if (ret >= sizeof (userdata) || ret < 0)
return ((nss_status_t)NSS_NOTFOUND);
return (_nss_ldap_lookup(be, argp, _SHADOW, searchfilter, NULL,
_merge_SSD_filter, userdata));
}
static ldap_backend_op_t sp_ops[] = {
_nss_ldap_destr,
_nss_ldap_endent,
_nss_ldap_setent,
_nss_ldap_getent,
getbynam
};
/*
* _nss_ldap_passwd_constr is where life begins. This function calls the
* generic ldap constructor function to define and build the abstract
* data types required to support ldap operations.
*/
/*ARGSUSED0*/
nss_backend_t *
_nss_ldap_shadow_constr(const char *dummy1, const char *dummy2,
const char *dummy3)
{
#ifdef DEBUG
(void) fprintf(stdout, "\n[getspent.c: _nss_ldap_shadow_constr]\n");
#endif /* DEBUG */
return ((nss_backend_t *)_nss_ldap_constr(sp_ops,
sizeof (sp_ops)/sizeof (sp_ops[0]),
_SHADOW, sp_attrs, _nss_ldap_shadow2ent));
}
|
