4 Copyright (C) Andrew Bartlet 2005
5 Copyright (C) Simo Sorce 2006
7 ** NOTE! The following LGPL license applies to the ldb
8 ** library. This does NOT imply that all of Samba is released
11 This library is free software; you can redistribute it and/or
12 modify it under the terms of the GNU Lesser General Public
13 License as published by the Free Software Foundation; either
14 version 3 of the License, or (at your option) any later version.
16 This library is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 Lesser General Public License for more details.
21 You should have received a copy of the GNU Lesser General Public
22 License along with this library; if not, see <http://www.gnu.org/licenses/>.
28 * Component: ldb rdn name module
30 * Description: keep a consistent name attribute on objects manpulations
32 * Author: Andrew Bartlet
35 * - made the module async
39 #include "ldb_includes.h"
41 static struct ldb_message_element *rdn_name_find_attribute(const struct ldb_message *msg, const char *name)
45 for (i = 0; i < msg->num_elements; i++) {
46 if (ldb_attr_cmp(name, msg->elements[i].name) == 0) {
47 return &msg->elements[i];
54 static int rdn_name_add(struct ldb_module *module, struct ldb_request *req)
56 struct ldb_request *down_req;
57 struct ldb_message *msg;
58 struct ldb_message_element *attribute;
60 struct ldb_val rdn_val;
63 ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_add_record\n");
65 /* do not manipulate our control entries */
66 if (ldb_dn_is_special(req->op.add.message->dn)) {
67 return ldb_next_request(module, req);
70 down_req = talloc(req, struct ldb_request);
71 if (down_req == NULL) {
72 return LDB_ERR_OPERATIONS_ERROR;
77 down_req->op.add.message = msg = ldb_msg_copy_shallow(down_req, req->op.add.message);
79 return LDB_ERR_OPERATIONS_ERROR;
82 rdn_name = ldb_dn_get_rdn_name(msg->dn);
83 if (rdn_name == NULL) {
84 talloc_free(down_req);
85 return LDB_ERR_OPERATIONS_ERROR;
88 rdn_val = ldb_val_dup(msg, ldb_dn_get_rdn_val(msg->dn));
90 /* Perhaps someone above us tried to set this? */
91 if ((attribute = rdn_name_find_attribute(msg, "name")) != NULL ) {
92 attribute->num_values = 0;
95 if (ldb_msg_add_value(msg, "name", &rdn_val, NULL) != 0) {
96 talloc_free(down_req);
97 return LDB_ERR_OPERATIONS_ERROR;
100 attribute = rdn_name_find_attribute(msg, rdn_name);
103 if (ldb_msg_add_value(msg, rdn_name, &rdn_val, NULL) != 0) {
104 talloc_free(down_req);
105 return LDB_ERR_OPERATIONS_ERROR;
108 const struct ldb_schema_attribute *a = ldb_schema_attribute_by_name(module->ldb, rdn_name);
110 for (i = 0; i < attribute->num_values; i++) {
111 if (a->syntax->comparison_fn(module->ldb, msg, &rdn_val, &attribute->values[i]) == 0) {
112 /* overwrite so it matches in case */
113 attribute->values[i] = rdn_val;
117 if (i == attribute->num_values) {
118 ldb_debug_set(module->ldb, LDB_DEBUG_FATAL,
119 "RDN mismatch on %s: %s (%s)",
120 ldb_dn_get_linearized(msg->dn), rdn_name, rdn_val.data);
121 talloc_free(down_req);
122 return LDB_ERR_OPERATIONS_ERROR;
126 /* go on with the call chain */
127 ret = ldb_next_request(module, down_req);
129 /* do not free down_req as the call results may be linked to it,
130 * it will be freed when the upper level request get freed */
131 if (ret == LDB_SUCCESS) {
132 req->handle = down_req->handle;
138 struct rename_context {
140 enum {RENAME_RENAME, RENAME_MODIFY} step;
141 struct ldb_request *orig_req;
142 struct ldb_request *down_req;
143 struct ldb_request *mod_req;
146 static int rdn_name_rename(struct ldb_module *module, struct ldb_request *req)
148 struct ldb_handle *h;
149 struct rename_context *ac;
151 ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_rename\n");
153 /* do not manipulate our control entries */
154 if (ldb_dn_is_special(req->op.rename.newdn)) {
155 return ldb_next_request(module, req);
158 h = talloc_zero(req, struct ldb_handle);
160 return LDB_ERR_OPERATIONS_ERROR;
165 ac = talloc_zero(h, struct rename_context);
167 return LDB_ERR_OPERATIONS_ERROR;
170 h->private_data = (void *)ac;
172 h->state = LDB_ASYNC_INIT;
173 h->status = LDB_SUCCESS;
176 ac->down_req = talloc(req, struct ldb_request);
177 if (ac->down_req == NULL) {
178 return LDB_ERR_OPERATIONS_ERROR;
181 *(ac->down_req) = *req;
183 ac->step = RENAME_RENAME;
187 /* rename first, modify "name" if rename is ok */
188 return ldb_next_request(module, ac->down_req);
191 static int rdn_name_rename_do_mod(struct ldb_handle *h) {
193 struct rename_context *ac;
194 const char *rdn_name;
195 struct ldb_val rdn_val;
196 struct ldb_message *msg;
198 ac = talloc_get_type(h->private_data, struct rename_context);
200 ac->mod_req = talloc_zero(ac, struct ldb_request);
202 ac->mod_req->operation = LDB_MODIFY;
203 ac->mod_req->op.mod.message = msg = ldb_msg_new(ac->mod_req);
205 return LDB_ERR_OPERATIONS_ERROR;
208 msg->dn = ldb_dn_copy(msg, ac->orig_req->op.rename.newdn);
209 if (msg->dn == NULL) {
210 return LDB_ERR_OPERATIONS_ERROR;
213 rdn_name = ldb_dn_get_rdn_name(ac->orig_req->op.rename.newdn);
214 if (rdn_name == NULL) {
215 return LDB_ERR_OPERATIONS_ERROR;
218 rdn_val = ldb_val_dup(msg, ldb_dn_get_rdn_val(ac->orig_req->op.rename.newdn));
220 if (ldb_msg_add_empty(msg, rdn_name, LDB_FLAG_MOD_REPLACE, NULL) != 0) {
221 return LDB_ERR_OPERATIONS_ERROR;
223 if (ldb_msg_add_value(msg, rdn_name, &rdn_val, NULL) != 0) {
224 return LDB_ERR_OPERATIONS_ERROR;
226 if (ldb_msg_add_empty(msg, "name", LDB_FLAG_MOD_REPLACE, NULL) != 0) {
227 return LDB_ERR_OPERATIONS_ERROR;
229 if (ldb_msg_add_value(msg, "name", &rdn_val, NULL) != 0) {
230 return LDB_ERR_OPERATIONS_ERROR;
233 ldb_set_timeout_from_prev_req(h->module->ldb, ac->orig_req, ac->mod_req);
235 ac->step = RENAME_MODIFY;
237 /* do the mod call */
238 return ldb_request(h->module->ldb, ac->mod_req);
241 static int rename_wait(struct ldb_handle *handle)
243 struct rename_context *ac;
246 if (!handle || !handle->private_data) {
247 return LDB_ERR_OPERATIONS_ERROR;
250 if (handle->state == LDB_ASYNC_DONE) {
251 return handle->status;
254 handle->state = LDB_ASYNC_PENDING;
255 handle->status = LDB_SUCCESS;
257 ac = talloc_get_type(handle->private_data, struct rename_context);
261 ret = ldb_wait(ac->down_req->handle, LDB_WAIT_NONE);
262 if (ret != LDB_SUCCESS) {
263 handle->status = ret;
266 if (ac->down_req->handle->status != LDB_SUCCESS) {
267 handle->status = ac->down_req->handle->status;
271 if (ac->down_req->handle->state != LDB_ASYNC_DONE) {
275 /* rename operation done */
276 return rdn_name_rename_do_mod(handle);
279 ret = ldb_wait(ac->mod_req->handle, LDB_WAIT_NONE);
280 if (ret != LDB_SUCCESS) {
281 handle->status = ret;
284 if (ac->mod_req->handle->status != LDB_SUCCESS) {
285 handle->status = ac->mod_req->handle->status;
289 if (ac->mod_req->handle->state != LDB_ASYNC_DONE) {
296 ret = LDB_ERR_OPERATIONS_ERROR;
303 handle->state = LDB_ASYNC_DONE;
307 static int rename_wait_all(struct ldb_handle *handle) {
311 while (handle->state != LDB_ASYNC_DONE) {
312 ret = rename_wait(handle);
313 if (ret != LDB_SUCCESS) {
318 return handle->status;
321 static int rdn_name_wait(struct ldb_handle *handle, enum ldb_wait_type type)
323 if (type == LDB_WAIT_ALL) {
324 return rename_wait_all(handle);
326 return rename_wait(handle);
330 static const struct ldb_module_ops rdn_name_ops = {
333 .rename = rdn_name_rename,
334 .wait = rdn_name_wait
338 int ldb_rdn_name_init(void)
340 return ldb_register_module(&rdn_name_ops);