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/*
ldb database library
Copyright (C) Simo Sorce 2005
Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2009
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Name: ldb
*
* Component: ldb deleted objects control module
*
* Description: this module hides deleted objects, and returns them if the right control is there
*
* Author: Stefan Metzmacher
*/
#include "includes.h"
#include "ldb/include/ldb_module.h"
#include "dsdb/samdb/samdb.h"
static int show_deleted_search(struct ldb_module *module, struct ldb_request *req)
{
struct ldb_context *ldb;
struct ldb_control *control;
struct ldb_control **saved_controls;
struct ldb_request *down_req;
struct ldb_parse_tree *nodeleted_tree;
struct ldb_parse_tree *new_tree = req->op.search.tree;
int ret;
ldb = ldb_module_get_ctx(module);
/* check if there's a show deleted control */
control = ldb_request_get_control(req, LDB_CONTROL_SHOW_DELETED_OID);
if (! control) {
nodeleted_tree = talloc_get_type(ldb_module_get_private(module),
struct ldb_parse_tree);
if (nodeleted_tree) {
new_tree = talloc(req, struct ldb_parse_tree);
if (!new_tree) {
ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
*new_tree = *nodeleted_tree;
/* Replace dummy part of 'and' with the old, tree,
without a parse step */
new_tree->u.list.elements[0] = req->op.search.tree;
}
}
ret = ldb_build_search_req_ex(&down_req, ldb, req,
req->op.search.base,
req->op.search.scope,
new_tree,
req->op.search.attrs,
req->controls,
req->context, req->callback,
req);
if (ret != LDB_SUCCESS) {
return ret;
}
/* if a control is there remove if from the modified request */
if (control && !save_controls(control, down_req, &saved_controls)) {
return LDB_ERR_OPERATIONS_ERROR;
}
/* perform the search */
return ldb_next_request(module, down_req);
}
static int show_deleted_init(struct ldb_module *module)
{
struct ldb_context *ldb;
struct ldb_parse_tree *nodeleted_tree;
int ret;
ldb = ldb_module_get_ctx(module);
nodeleted_tree = ldb_parse_tree(module, "(&(replace=me)(!(isDeleted=TRUE)))");
if (!nodeleted_tree) {
ldb_debug(ldb, LDB_DEBUG_ERROR,
"show_deleted: Unable to parse isDeleted master expression!\n");
return LDB_ERR_OPERATIONS_ERROR;
}
ldb_module_set_private(module, nodeleted_tree);
ret = ldb_mod_register_control(module, LDB_CONTROL_SHOW_DELETED_OID);
if (ret != LDB_SUCCESS) {
ldb_debug(ldb, LDB_DEBUG_ERROR,
"show_deleted: Unable to register control with rootdse!\n");
return LDB_ERR_OPERATIONS_ERROR;
}
return ldb_next_init(module);
}
_PUBLIC_ const struct ldb_module_ops ldb_show_deleted_module_ops = {
.name = "show_deleted",
.search = show_deleted_search,
.init_context = show_deleted_init
};
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