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/*
ldb database library
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2006-2007
Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
Copyright (C) Matthias Dieter Wallnöfer <mdw@samba.org> 2010-2011
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 subtree rename module
*
* Description: Rename a subtree in LDB
*
* Author: Andrew Bartlett
*/
#include "includes.h"
#include <ldb.h>
#include <ldb_module.h>
#include "libds/common/flags.h"
#include "dsdb/samdb/samdb.h"
#include "dsdb/samdb/ldb_modules/util.h"
struct subtree_rename_context {
struct ldb_module *module;
struct ldb_request *req;
};
static struct subtree_rename_context *subren_ctx_init(struct ldb_module *module,
struct ldb_request *req)
{
struct subtree_rename_context *ac;
ac = talloc_zero(req, struct subtree_rename_context);
if (ac == NULL) {
return NULL;
}
ac->module = module;
ac->req = req;
return ac;
}
static int subtree_rename_callback(struct ldb_request *req,
struct ldb_reply *ares)
{
struct ldb_context *ldb;
struct subtree_rename_context *ac;
ac = talloc_get_type(req->context, struct subtree_rename_context);
ldb = ldb_module_get_ctx(ac->module);
if (!ares) {
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
if (ares->type == LDB_REPLY_REFERRAL) {
return ldb_module_send_referral(ac->req, ares->referral);
}
if (ares->error != LDB_SUCCESS) {
return ldb_module_done(ac->req, ares->controls,
ares->response, ares->error);
}
if (ares->type != LDB_REPLY_DONE) {
ldb_asprintf_errstring(ldb, "Invalid LDB reply type %d", ares->type);
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
talloc_free(ares);
return ldb_module_done(ac->req, NULL, NULL, LDB_SUCCESS);
}
static int subtree_rename_search_onelevel_callback(struct ldb_request *req,
struct ldb_reply *ares)
{
struct subtree_rename_context *ac;
struct ldb_request *rename_req;
int ret;
ac = talloc_get_type(req->context, struct subtree_rename_context);
if (!ares) {
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
if (ares->error != LDB_SUCCESS) {
return ldb_module_done(ac->req, ares->controls,
ares->response, ares->error);
}
switch (ares->type) {
case LDB_REPLY_ENTRY:
{
struct ldb_dn *old_dn = ares->message->dn;
struct ldb_dn *new_dn = ldb_dn_copy(ares, old_dn);
if (!new_dn) {
return ldb_module_oom(ac->module);
}
if ( ! ldb_dn_remove_base_components(new_dn,
ldb_dn_get_comp_num(ac->req->op.rename.olddn))) {
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
if ( ! ldb_dn_add_base(new_dn, ac->req->op.rename.newdn)) {
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
ret = dsdb_module_rename(ac->module, old_dn, new_dn, DSDB_FLAG_OWN_MODULE, req);
if (ret != LDB_SUCCESS) {
return ret;
}
talloc_free(ares);
return LDB_SUCCESS;
}
case LDB_REPLY_REFERRAL:
/* ignore */
break;
case LDB_REPLY_DONE:
ret = ldb_build_rename_req(&rename_req, ldb_module_get_ctx(ac->module), ac,
ac->req->op.rename.olddn,
ac->req->op.rename.newdn,
ac->req->controls,
ac, subtree_rename_callback,
ac->req);
LDB_REQ_SET_LOCATION(req);
if (ret != LDB_SUCCESS) {
return ret;
}
talloc_free(ares);
return ldb_next_request(ac->module, rename_req);
}
return LDB_SUCCESS;
}
/* rename */
static int subtree_rename(struct ldb_module *module, struct ldb_request *req)
{
struct ldb_context *ldb;
static const char * const no_attrs[] = {NULL};
struct ldb_request *search_req;
struct subtree_rename_context *ac;
int ret;
if (ldb_dn_is_special(req->op.rename.olddn)) { /* do not manipulate our control entries */
return ldb_next_request(module, req);
}
ldb = ldb_module_get_ctx(module);
/* 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 sanity
*/
ac = subren_ctx_init(module, req);
if (!ac) {
return ldb_oom(ldb);
}
ret = ldb_build_search_req(&search_req, ldb_module_get_ctx(ac->module), ac,
ac->req->op.rename.olddn,
LDB_SCOPE_ONELEVEL,
"(objectClass=*)",
no_attrs,
NULL,
ac,
subtree_rename_search_onelevel_callback,
req);
LDB_REQ_SET_LOCATION(search_req);
if (ret != LDB_SUCCESS) {
return ret;
}
ret = ldb_request_add_control(search_req, LDB_CONTROL_SHOW_RECYCLED_OID,
true, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
return ldb_next_request(ac->module, search_req);
}
static const struct ldb_module_ops ldb_subtree_rename_module_ops = {
.name = "subtree_rename",
.rename = subtree_rename
};
int ldb_subtree_rename_module_init(const char *version)
{
LDB_MODULE_CHECK_VERSION(version);
return ldb_register_module(&ldb_subtree_rename_module_ops);
}
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