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authorAndrew Tridgell <tridge@samba.org>2006-09-24 02:49:04 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 12:14:36 -0500
commit3e2c696e45b24b0192ab7b1ddaf1dd4d79571609 (patch)
tree9c4423bdb006f7c183fea0c87331d23e7043d0b1 /source3/lib/ldb/modules/rdn_name.c
parent0c3194816b513e3743ddcacd1eca2b683ca39b88 (diff)
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r18866: Jeremy and Volker have given the go-ahead on the group mapping ldb
code. Yay! This first commit copies lib/ldb/ from Samba4. A huge congratulations should go to Simo on this - he has put an enormous amount of work into ldb, and it's great to see it go into the Samba3 tree. (This used to be commit bbedf2e34315f5c420a3a05dfe22b1d5cf79f042)
Diffstat (limited to 'source3/lib/ldb/modules/rdn_name.c')
-rw-r--r--source3/lib/ldb/modules/rdn_name.c337
1 files changed, 337 insertions, 0 deletions
diff --git a/source3/lib/ldb/modules/rdn_name.c b/source3/lib/ldb/modules/rdn_name.c
new file mode 100644
index 0000000000..fce1d34ac0
--- /dev/null
+++ b/source3/lib/ldb/modules/rdn_name.c
@@ -0,0 +1,337 @@
+/*
+ ldb database library
+
+ Copyright (C) Andrew Bartlet 2005
+ Copyright (C) Simo Sorce 2006
+
+ ** NOTE! The following LGPL license applies to the ldb
+ ** library. This does NOT imply that all of Samba is released
+ ** under the LGPL
+
+ 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 2 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+/*
+ * Name: rdb_name
+ *
+ * Component: ldb rdn name module
+ *
+ * Description: keep a consistent name attribute on objects manpulations
+ *
+ * Author: Andrew Bartlet
+ *
+ * Modifications:
+ * - made the module async
+ * Simo Sorce Mar 2006
+ */
+
+#include "includes.h"
+#include "ldb/include/includes.h"
+
+static struct ldb_message_element *rdn_name_find_attribute(const struct ldb_message *msg, const char *name)
+{
+ int i;
+
+ for (i = 0; i < msg->num_elements; i++) {
+ if (ldb_attr_cmp(name, msg->elements[i].name) == 0) {
+ return &msg->elements[i];
+ }
+ }
+
+ return NULL;
+}
+
+static int rdn_name_add(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_request *down_req;
+ struct ldb_message *msg;
+ struct ldb_message_element *attribute;
+ struct ldb_dn_component *rdn;
+ int i, ret;
+
+ ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_add_record\n");
+
+ /* do not manipulate our control entries */
+ if (ldb_dn_is_special(req->op.add.message->dn)) {
+ return ldb_next_request(module, req);
+ }
+
+ down_req = talloc(req, struct ldb_request);
+ if (down_req == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ *down_req = *req;
+
+ down_req->op.add.message = msg = ldb_msg_copy_shallow(down_req, req->op.add.message);
+ if (msg == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ rdn = ldb_dn_get_rdn(msg, msg->dn);
+ if (rdn == NULL) {
+ talloc_free(down_req);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* Perhaps someone above us tried to set this? */
+ if ((attribute = rdn_name_find_attribute(msg, "name")) != NULL ) {
+ attribute->num_values = 0;
+ }
+
+ if (ldb_msg_add_value(msg, "name", &rdn->value) != 0) {
+ talloc_free(down_req);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ attribute = rdn_name_find_attribute(msg, rdn->name);
+
+ if (!attribute) {
+ if (ldb_msg_add_value(msg, rdn->name, &rdn->value) != 0) {
+ talloc_free(down_req);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ } else {
+ const struct ldb_attrib_handler *handler = ldb_attrib_handler(module->ldb, rdn->name);
+
+ for (i = 0; i < attribute->num_values; i++) {
+ if (handler->comparison_fn(module->ldb, msg, &rdn->value, &attribute->values[i]) == 0) {
+ /* overwrite so it matches in case */
+ attribute->values[i] = rdn->value;
+ break;
+ }
+ }
+ if (i == attribute->num_values) {
+ ldb_debug_set(module->ldb, LDB_DEBUG_FATAL,
+ "RDN mismatch on %s: %s",
+ ldb_dn_linearize(msg, msg->dn), rdn->name);
+ talloc_free(down_req);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
+
+ /* go on with the call chain */
+ ret = ldb_next_request(module, down_req);
+
+ /* do not free down_req as the call results may be linked to it,
+ * it will be freed when the upper level request get freed */
+ if (ret == LDB_SUCCESS) {
+ req->handle = down_req->handle;
+ }
+
+ return ret;
+}
+
+struct rename_context {
+
+ enum {RENAME_RENAME, RENAME_MODIFY} step;
+ struct ldb_request *orig_req;
+ struct ldb_request *down_req;
+ struct ldb_request *mod_req;
+};
+
+static int rdn_name_rename(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_handle *h;
+ struct rename_context *ac;
+
+ ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_rename\n");
+
+ /* do not manipulate our control entries */
+ if (ldb_dn_is_special(req->op.rename.newdn)) {
+ return ldb_next_request(module, req);
+ }
+
+ h = talloc_zero(req, struct ldb_handle);
+ if (h == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ h->module = module;
+
+ ac = talloc_zero(h, struct rename_context);
+ if (ac == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ h->private_data = (void *)ac;
+
+ h->state = LDB_ASYNC_INIT;
+ h->status = LDB_SUCCESS;
+
+ ac->orig_req = req;
+ ac->down_req = talloc(req, struct ldb_request);
+ if (ac->down_req == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ *(ac->down_req) = *req;
+
+ ac->step = RENAME_RENAME;
+
+ req->handle = h;
+
+ /* rename first, modify "name" if rename is ok */
+ return ldb_next_request(module, ac->down_req);
+}
+
+static int rdn_name_rename_do_mod(struct ldb_handle *h) {
+
+ struct rename_context *ac;
+ struct ldb_dn_component *rdn;
+ struct ldb_message *msg;
+
+ ac = talloc_get_type(h->private_data, struct rename_context);
+
+ rdn = ldb_dn_get_rdn(ac, ac->orig_req->op.rename.newdn);
+ if (rdn == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ac->mod_req = talloc_zero(ac, struct ldb_request);
+
+ ac->mod_req->operation = LDB_MODIFY;
+ ac->mod_req->op.mod.message = msg = ldb_msg_new(ac->mod_req);
+ if (msg == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ msg->dn = ldb_dn_copy(msg, ac->orig_req->op.rename.newdn);
+ if (msg->dn == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (ldb_msg_add_empty(msg, rdn->name, LDB_FLAG_MOD_REPLACE) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ if (ldb_msg_add_value(msg, rdn->name, &rdn->value) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ if (ldb_msg_add_empty(msg, "name", LDB_FLAG_MOD_REPLACE) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ if (ldb_msg_add_value(msg, "name", &rdn->value) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ldb_set_timeout_from_prev_req(h->module->ldb, ac->orig_req, ac->mod_req);
+
+ ac->step = RENAME_MODIFY;
+
+ /* do the mod call */
+ return ldb_request(h->module->ldb, ac->mod_req);
+}
+
+static int rename_wait(struct ldb_handle *handle)
+{
+ struct rename_context *ac;
+ int ret;
+
+ if (!handle || !handle->private_data) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (handle->state == LDB_ASYNC_DONE) {
+ return handle->status;
+ }
+
+ handle->state = LDB_ASYNC_PENDING;
+ handle->status = LDB_SUCCESS;
+
+ ac = talloc_get_type(handle->private_data, struct rename_context);
+
+ switch(ac->step) {
+ case RENAME_RENAME:
+ ret = ldb_wait(ac->down_req->handle, LDB_WAIT_NONE);
+ if (ret != LDB_SUCCESS) {
+ handle->status = ret;
+ goto done;
+ }
+ if (ac->down_req->handle->status != LDB_SUCCESS) {
+ handle->status = ac->down_req->handle->status;
+ goto done;
+ }
+
+ if (ac->down_req->handle->state != LDB_ASYNC_DONE) {
+ return LDB_SUCCESS;
+ }
+
+ /* rename operation done */
+ return rdn_name_rename_do_mod(handle);
+
+ case RENAME_MODIFY:
+ ret = ldb_wait(ac->mod_req->handle, LDB_WAIT_NONE);
+ if (ret != LDB_SUCCESS) {
+ handle->status = ret;
+ goto done;
+ }
+ if (ac->mod_req->handle->status != LDB_SUCCESS) {
+ handle->status = ac->mod_req->handle->status;
+ goto done;
+ }
+
+ if (ac->mod_req->handle->state != LDB_ASYNC_DONE) {
+ return LDB_SUCCESS;
+ }
+
+ break;
+
+ default:
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+
+ ret = LDB_SUCCESS;
+
+done:
+ handle->state = LDB_ASYNC_DONE;
+ return ret;
+}
+
+static int rename_wait_all(struct ldb_handle *handle) {
+
+ int ret;
+
+ while (handle->state != LDB_ASYNC_DONE) {
+ ret = rename_wait(handle);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+
+ return handle->status;
+}
+
+static int rdn_name_wait(struct ldb_handle *handle, enum ldb_wait_type type)
+{
+ if (type == LDB_WAIT_ALL) {
+ return rename_wait_all(handle);
+ } else {
+ return rename_wait(handle);
+ }
+}
+
+static const struct ldb_module_ops rdn_name_ops = {
+ .name = "rdn_name",
+ .add = rdn_name_add,
+ .rename = rdn_name_rename,
+ .wait = rdn_name_wait
+};
+
+
+int ldb_rdn_name_init(void)
+{
+ return ldb_register_module(&rdn_name_ops);
+}