4 Copyright (C) Simo Sorce 2006
6 This library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public
8 License as published by the Free Software Foundation; either
9 version 3 of the License, or (at your option) any later version.
11 This library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Library General Public License for more details.
16 You should have received a copy of the GNU Library General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 struct _ldb_nss_context *_ldb_nss_ctx = NULL;
24 NSS_STATUS _ldb_nss_init(void)
28 pid_t mypid = getpid();
30 if (_ldb_nss_ctx != NULL) {
31 if (_ldb_nss_ctx->pid == mypid) {
32 /* already initialized */
33 return NSS_STATUS_SUCCESS;
35 /* we are in a forked child now, reinitialize */
36 talloc_free(_ldb_nss_ctx);
41 _ldb_nss_ctx = talloc_named(NULL, 0, "_ldb_nss_ctx(%u)", mypid);
42 if (_ldb_nss_ctx == NULL) {
43 return NSS_STATUS_UNAVAIL;
46 _ldb_nss_ctx->pid = mypid;
48 ret = ldb_global_init();
53 _ldb_nss_ctx->ldb = ldb_init(_ldb_nss_ctx);
54 if (_ldb_nss_ctx->ldb == NULL) {
58 ret = ldb_connect(_ldb_nss_ctx->ldb, _LDB_NSS_URL, LDB_FLG_RDONLY, NULL);
59 if (ret != LDB_SUCCESS) {
63 _ldb_nss_ctx->base = ldb_dn_explode(_ldb_nss_ctx, _LDB_NSS_BASEDN);
64 if (_ldb_nss_ctx->base == NULL) {
68 _ldb_nss_ctx->pw_cur = 0;
69 _ldb_nss_ctx->pw_res = NULL;
70 _ldb_nss_ctx->gr_cur = 0;
71 _ldb_nss_ctx->gr_res = NULL;
73 return NSS_STATUS_SUCCESS;
76 /* talloc_free(_ldb_nss_ctx); */
78 return NSS_STATUS_UNAVAIL;
81 NSS_STATUS _ldb_nss_fill_passwd(struct passwd *result,
85 struct ldb_message *msg)
94 tmp = ldb_msg_find_attr_as_string(msg, "uid", NULL);
96 /* this is a fatal error */
97 *errnop = errno = ENOENT;
98 return NSS_STATUS_UNAVAIL;
101 if (bufpos + len > buflen) {
102 /* buffer too small */
103 *errnop = errno = EAGAIN;
104 return NSS_STATUS_TRYAGAIN;
106 memcpy(&buffer[bufpos], tmp, len);
107 result->pw_name = &buffer[bufpos];
110 /* get userPassword */
111 tmp = ldb_msg_find_attr_as_string(msg, "userPassword", NULL);
116 if (bufpos + len > buflen) {
117 /* buffer too small */
118 *errnop = errno = EAGAIN;
119 return NSS_STATUS_TRYAGAIN;
121 memcpy(&buffer[bufpos], tmp, len);
122 result->pw_passwd = &buffer[bufpos];
125 /* this backend never serves an uid 0 user */
126 result->pw_uid = ldb_msg_find_attr_as_int(msg, "uidNumber", 0);
127 if (result->pw_uid == 0) {
128 /* this is a fatal error */
129 *errnop = errno = ENOENT;
130 return NSS_STATUS_UNAVAIL;
133 result->pw_gid = ldb_msg_find_attr_as_int(msg, "gidNumber", 0);
134 if (result->pw_gid == 0) {
135 /* this is a fatal error */
136 *errnop = errno = ENOENT;
137 return NSS_STATUS_UNAVAIL;
141 tmp = ldb_msg_find_attr_as_string(msg, "gecos", NULL);
146 if (bufpos + len > buflen) {
147 /* buffer too small */
148 *errnop = errno = EAGAIN;
149 return NSS_STATUS_TRYAGAIN;
151 memcpy(&buffer[bufpos], tmp, len);
152 result->pw_gecos = &buffer[bufpos];
155 /* get homeDirectory */
156 tmp = ldb_msg_find_attr_as_string(msg, "homeDirectory", NULL);
161 if (bufpos + len > buflen) {
162 /* buffer too small */
163 *errnop = errno = EAGAIN;
164 return NSS_STATUS_TRYAGAIN;
166 memcpy(&buffer[bufpos], tmp, len);
167 result->pw_dir = &buffer[bufpos];
171 tmp = ldb_msg_find_attr_as_string(msg, "loginShell", NULL);
176 if (bufpos + len > buflen) {
177 /* buffer too small */
178 *errnop = errno = EAGAIN;
179 return NSS_STATUS_TRYAGAIN;
181 memcpy(&buffer[bufpos], tmp, len);
182 result->pw_shell = &buffer[bufpos];
185 return NSS_STATUS_SUCCESS;
188 NSS_STATUS _ldb_nss_fill_group(struct group *result,
192 struct ldb_message *group,
193 struct ldb_result *members)
204 tmp = ldb_msg_find_attr_as_string(group, "cn", NULL);
206 /* this is a fatal error */
207 *errnop = errno = ENOENT;
208 return NSS_STATUS_UNAVAIL;
211 if (bufpos + len > buflen) {
212 /* buffer too small */
213 *errnop = errno = EAGAIN;
214 return NSS_STATUS_TRYAGAIN;
216 memcpy(&buffer[bufpos], tmp, len);
217 result->gr_name = &buffer[bufpos];
220 /* get userPassword */
221 tmp = ldb_msg_find_attr_as_string(group, "userPassword", NULL);
226 if (bufpos + len > buflen) {
227 /* buffer too small */
228 *errnop = errno = EAGAIN;
229 return NSS_STATUS_TRYAGAIN;
231 memcpy(&buffer[bufpos], tmp, len);
232 result->gr_passwd = &buffer[bufpos];
235 result->gr_gid = ldb_msg_find_attr_as_int(group, "gidNumber", 0);
236 if (result->gr_gid == 0) {
237 /* this is a fatal error */
238 *errnop = errno = ENOENT;
239 return NSS_STATUS_UNAVAIL;
242 /* check if there is enough memory for the list of pointers */
243 lsize = (members->count + 1) * sizeof(char *);
245 /* align buffer on pointer boundary */
246 bufpos += (sizeof(char*) - ((unsigned long)(buffer) % sizeof(char*)));
247 if ((buflen - bufpos) < lsize) {
248 /* buffer too small */
249 *errnop = errno = EAGAIN;
250 return NSS_STATUS_TRYAGAIN;
253 result->gr_mem = (char **)&buffer[bufpos];
256 for (i = 0; i < members->count; i++) {
257 tmp = ldb_msg_find_attr_as_string(members->msgs[i], "uid", NULL);
259 /* this is a fatal error */
260 *errnop = errno = ENOENT;
261 return NSS_STATUS_UNAVAIL;
264 if (bufpos + len > buflen) {
265 /* buffer too small */
266 *errnop = errno = EAGAIN;
267 return NSS_STATUS_TRYAGAIN;
269 memcpy(&buffer[bufpos], tmp, len);
270 result->gr_mem[i] = &buffer[bufpos];
274 result->gr_mem[i] = NULL;
276 return NSS_STATUS_SUCCESS;
279 NSS_STATUS _ldb_nss_fill_initgr(gid_t group,
285 struct ldb_result *grlist)
290 for (i = 0; i < grlist->count; i++) {
292 if (limit && (*start > limit)) {
293 /* TODO: warn no all groups were reported */
295 ret = NSS_STATUS_SUCCESS;
299 if (*start == *size) {
300 /* buffer full, enlarge it */
305 if (limit && (gs > limit)) {
309 gm = (gid_t *)realloc((*groups), gs * sizeof(gid_t));
312 ret = NSS_STATUS_UNAVAIL;
320 (*groups)[*start] = ldb_msg_find_attr_as_int(grlist->msgs[i], "gidNumber", 0);
321 if ((*groups)[*start] == 0 || (*groups)[*start] == group) {
322 /* skip root group or primary group */
330 ret = NSS_STATUS_SUCCESS;
335 #define _LDB_NSS_ALLOC_CHECK(mem) do { if (!mem) { errno = ENOMEM; return NSS_STATUS_UNAVAIL; } } while(0)
337 NSS_STATUS _ldb_nss_group_request(struct ldb_result **_res,
338 struct ldb_dn *group_dn,
339 const char * const *attrs,
342 struct ldb_control **ctrls;
343 struct ldb_control *ctrl;
344 struct ldb_asq_control *asqc;
345 struct ldb_request *req;
347 struct ldb_result *res = *_res;
349 ctrls = talloc_array(res, struct ldb_control *, 2);
350 _LDB_NSS_ALLOC_CHECK(ctrls);
352 ctrl = talloc(ctrls, struct ldb_control);
353 _LDB_NSS_ALLOC_CHECK(ctrl);
355 asqc = talloc(ctrl, struct ldb_asq_control);
356 _LDB_NSS_ALLOC_CHECK(asqc);
358 asqc->source_attribute = talloc_strdup(asqc, mattr);
359 _LDB_NSS_ALLOC_CHECK(asqc->source_attribute);
362 asqc->src_attr_len = strlen(asqc->source_attribute);
363 ctrl->oid = LDB_CONTROL_ASQ_OID;
369 ret = ldb_build_search_req(
379 ldb_search_default_callback);
381 if (ret != LDB_SUCCESS) {
383 return NSS_STATUS_UNAVAIL;
386 ldb_set_timeout(_ldb_nss_ctx->ldb, req, 0);
388 ret = ldb_request(_ldb_nss_ctx->ldb, req);
390 if (ret == LDB_SUCCESS) {
391 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
394 return NSS_STATUS_UNAVAIL;
398 return NSS_STATUS_SUCCESS;