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/*
ldb database library
Copyright (C) Simo Sorce 2005
Copyright (C) Stefa 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 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.h"
#include "ldb/include/ldb_errors.h"
#include "ldb/include/ldb_private.h"
#include "dsdb/samdb/samdb.h"
/* search */
struct show_deleted_search_request {
struct ldb_module *module;
struct ldb_request *req;
};
static int show_deleted_search_callback(struct ldb_request *req,
struct ldb_reply *ares)
{
struct show_deleted_search_request *ar;
ar = talloc_get_type(req->context, struct show_deleted_search_request);
if (!ares) {
return ldb_module_done(ar->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
if (ares->error != LDB_SUCCESS) {
return ldb_module_done(ar->req, ares->controls,
ares->response, ares->error);
}
switch (ares->type) {
case LDB_REPLY_ENTRY:
return ldb_module_send_entry(ar->req, ares->message);
case LDB_REPLY_REFERRAL:
return ldb_module_send_referral(ar->req, ares->referral);
case LDB_REPLY_DONE:
return ldb_module_done(ar->req, ares->controls,
ares->response, LDB_SUCCESS);
}
return LDB_SUCCESS;
}
static int show_deleted_search(struct ldb_module *module, struct ldb_request *req)
{
struct ldb_control *control;
struct ldb_control **saved_controls;
struct show_deleted_search_request *ar;
struct ldb_request *down_req;
char *old_filter;
char *new_filter;
int ret;
ar = talloc_zero(req, struct show_deleted_search_request);
if (ar == NULL) {
return LDB_ERR_OPERATIONS_ERROR;
}
ar->module = module;
ar->req = req;
/* check if there's a show deleted control */
control = ldb_request_get_control(req, LDB_CONTROL_SHOW_DELETED_OID);
if ( ! control) {
old_filter = ldb_filter_from_tree(ar, req->op.search.tree);
new_filter = talloc_asprintf(ar, "(&(!(isDeleted=TRUE))%s)",
old_filter);
ret = ldb_build_search_req(&down_req, module->ldb, ar,
req->op.search.base,
req->op.search.scope,
new_filter,
req->op.search.attrs,
req->controls,
ar, show_deleted_search_callback,
req);
} else {
ret = ldb_build_search_req_ex(&down_req, module->ldb, ar,
req->op.search.base,
req->op.search.scope,
req->op.search.tree,
req->op.search.attrs,
req->controls,
ar, show_deleted_search_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)
{
int ret;
ret = ldb_mod_register_control(module, LDB_CONTROL_SHOW_DELETED_OID);
if (ret != LDB_SUCCESS) {
ldb_debug(module->ldb, LDB_DEBUG_ERROR,
"extended_dn: 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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