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-rw-r--r--source4/dsdb/samdb/ldb_modules/config.mk12
-rw-r--r--source4/dsdb/samdb/ldb_modules/subtree_rename.c290
2 files changed, 302 insertions, 0 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/config.mk b/source4/dsdb/samdb/ldb_modules/config.mk
index 7b42123d0a..f35f26371b 100644
--- a/source4/dsdb/samdb/ldb_modules/config.mk
+++ b/source4/dsdb/samdb/ldb_modules/config.mk
@@ -232,3 +232,15 @@ OBJ_FILES = \
# End MODULE ldb_objectclass
################################################
+################################################
+# Start MODULE ldb_subtree_rename
+[MODULE::ldb_subtree_rename]
+INIT_FUNCTION = ldb_subtree_rename_init
+CFLAGS = -Ilib/ldb/include
+PRIVATE_DEPENDENCIES = LIBTALLOC
+SUBSYSTEM = LIBLDB
+OBJ_FILES = \
+ subtree_rename.o
+# End MODULE ldb_subtree_rename
+################################################
+
diff --git a/source4/dsdb/samdb/ldb_modules/subtree_rename.c b/source4/dsdb/samdb/ldb_modules/subtree_rename.c
new file mode 100644
index 0000000000..993331216e
--- /dev/null
+++ b/source4/dsdb/samdb/ldb_modules/subtree_rename.c
@@ -0,0 +1,290 @@
+/*
+ ldb database library
+
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2006-2007
+ Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
+
+ ** 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 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
+ 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, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ * Name: ldb
+ *
+ * Component: ldb subtree rename module
+ *
+ * Description: Rename a subtree in LDB
+ *
+ * Author: Andrew Bartlett
+ */
+
+#include "ldb_includes.h"
+
+struct subtree_rename_context {
+ struct ldb_module *module;
+ struct ldb_handle *handle;
+ struct ldb_request *orig_req;
+
+ struct ldb_request **down_req;
+ int num_requests;
+ int finished_requests;
+};
+
+struct subtree_rename_search_context {
+ struct ldb_module *module;
+ struct ldb_request *orig_req;
+ struct ldb_handle *handle;
+
+ struct ldb_request **down_req;
+ int num_requests;
+ int finished_requests;
+};
+
+static struct subtree_rename_context *subtree_rename_init_handle(struct ldb_request *req,
+ struct ldb_module *module)
+{
+ struct subtree_rename_context *ac;
+ struct ldb_handle *h;
+
+ h = talloc_zero(req, struct ldb_handle);
+ if (h == NULL) {
+ ldb_set_errstring(module->ldb, "Out of Memory");
+ return NULL;
+ }
+
+ h->module = module;
+
+ ac = talloc_zero(h, struct subtree_rename_context);
+ if (ac == NULL) {
+ ldb_set_errstring(module->ldb, "Out of Memory");
+ talloc_free(h);
+ return NULL;
+ }
+
+ h->private_data = ac;
+
+ ac->module = module;
+ ac->handle = h;
+ ac->orig_req = req;
+
+ req->handle = h;
+
+ return ac;
+}
+
+
+static int subtree_rename_search_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares)
+{
+ /* OK, we have one of *many* search results here:
+
+ We should also get the entry we tried to rename. This
+ callback handles this and everything below it.
+ */
+
+ if (ares->type == LDB_REPLY_ENTRY) {
+ /* And it is an actual entry: now create a rename from it */
+ struct subtree_rename_context *ac = talloc_get_type(context, struct subtree_rename_context);
+ struct ldb_request *req;
+ int ret;
+
+ TALLOC_CTX *mem_ctx = talloc_new(ac);
+
+ struct ldb_dn *newdn = ldb_dn_copy(mem_ctx, ares->message->dn);
+ if (!newdn) {
+ ldb_oom(ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ldb_dn_remove_base_components(newdn, ldb_dn_get_comp_num(ac->orig_req->op.rename.olddn));
+
+ if (!ldb_dn_add_base(newdn, ac->orig_req->op.rename.newdn)) {
+ ldb_oom(ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = ldb_build_rename_req(&req, ldb, mem_ctx,
+ ares->message->dn,
+ newdn,
+ NULL,
+ NULL,
+ NULL);
+
+ if (ret != LDB_SUCCESS) return ret;
+
+ talloc_steal(req, newdn);
+
+ req->handle = ac->handle;
+
+ ac->down_req = talloc_realloc(ac, ac->down_req,
+ struct ldb_request *, ac->num_requests + 1);
+ if (!ac->down_req) {
+ ldb_oom(ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ac->down_req[ac->num_requests] = req;
+
+ return ldb_next_request(ac->module, req);
+
+ } else {
+ talloc_free(ares);
+ }
+
+ return LDB_SUCCESS;
+
+}
+
+/* rename */
+static int subtree_rename(struct ldb_module *module, struct ldb_request *req)
+{
+ const char *attrs[] = { NULL };
+ struct ldb_request *new_req;
+ struct subtree_rename_context *ac;
+ int ret;
+ struct ldb_search_options_control *search_options;
+ if (ldb_dn_is_special(req->op.mod.message->dn)) { /* do not manipulate our control entries */
+ return ldb_next_request(module, req);
+ }
+
+ /* This gets complex: We need to:
+ - Do a search for all entires under this entry
+ - Wait for these results to appear
+ - In the callback for each result, issue a modify request
+ - That will include this rename, we hope
+ - Wait for each modify result
+ - Regain our sainity
+ */
+
+ ac = subtree_rename_init_handle(req, module);
+ if (!ac) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = ldb_build_search_req(&new_req, module->ldb, req,
+ req->op.rename.olddn,
+ LDB_SCOPE_SUBTREE,
+ "objectClass=*",
+ attrs,
+ req->controls,
+ ac,
+ subtree_rename_search_callback);
+
+ /* We want to find any partitions under this entry. That way,
+ * if we try and rename a whole partition, the partitions
+ * module should cause us to fail the lot */
+ search_options = talloc(ac, struct ldb_search_options_control);
+ if (!search_options) {
+ ldb_oom(ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
+
+ ret = ldb_request_add_control(new_req, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ new_req->handle = req->handle;
+
+ ac->down_req = talloc_realloc(ac, ac->down_req,
+ struct ldb_request *, ac->num_requests + 1);
+ if (!ac->down_req) {
+ ldb_oom(ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ac->down_req[ac->num_requests] = new_req;
+ if (req == NULL) {
+ ldb_oom(ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ return ldb_next_request(module, req);
+}
+
+static int subtree_rename_wait_none(struct ldb_handle *handle) {
+ struct subtree_rename_context *ac;
+ int i, 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 subtree_rename_context);
+
+ for (i=0; i < ac->num_requests; i++) {
+ ret = ldb_wait(ac->down_req[i]->handle, LDB_WAIT_NONE);
+
+ if (ret != LDB_SUCCESS) {
+ handle->status = ret;
+ goto done;
+ }
+ if (ac->down_req[i]->handle->status != LDB_SUCCESS) {
+ handle->status = ac->down_req[i]->handle->status;
+ goto done;
+ }
+
+ if (ac->down_req[i]->handle->state != LDB_ASYNC_DONE) {
+ return LDB_SUCCESS;
+ }
+ }
+
+ ret = LDB_SUCCESS;
+
+done:
+ handle->state = LDB_ASYNC_DONE;
+ return ret;
+
+}
+
+static int subtree_rename_wait_all(struct ldb_handle *handle) {
+
+ int ret;
+
+ while (handle->state != LDB_ASYNC_DONE) {
+ ret = subtree_rename_wait_none(handle);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+
+ return handle->status;
+}
+
+static int subtree_rename_wait(struct ldb_handle *handle, enum ldb_wait_type type)
+{
+ if (type == LDB_WAIT_ALL) {
+ return subtree_rename_wait_all(handle);
+ } else {
+ return subtree_rename_wait_none(handle);
+ }
+}
+
+static const struct ldb_module_ops subtree_rename_ops = {
+ .name = "subtree_rename",
+ .rename = subtree_rename,
+ .wait = subtree_rename_wait,
+};
+
+int ldb_subtree_rename_init(void)
+{
+ return ldb_register_module(&subtree_rename_ops);
+}
generated by cgit (git 2.34.1) at 2024-12-27 05:03:31 +0000