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/*
ldb database library
Copyright (C) Simo Sorce 2004-2008
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
Copyright (C) Andrew Tridgell 2005
Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
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 instancetype module
*
* Description: add an instanceType onto every new record
*
* Author: Andrew Bartlett
*/
#include "includes.h"
#include "ldb.h"
#include "ldb_module.h"
#include "librpc/gen_ndr/ndr_misc.h"
#include "dsdb/samdb/samdb.h"
#include "../libds/common/flags.h"
struct np_context {
struct ldb_module *module;
struct ldb_request *req;
struct ldb_request *search_req;
struct ldb_request *part_add;
};
static int np_part_mod_callback(struct ldb_request *req, struct ldb_reply *ares)
{
struct ldb_context *ldb;
struct np_context *ac;
ac = talloc_get_type(req->context, struct np_context);
ldb = ldb_module_get_ctx(ac->module);
if (!ares) {
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
/* We just want to update the @PARTITIONS record if the value does not exist */
if (ares->error != LDB_SUCCESS && ares->error != LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS) {
return ldb_module_done(ac->req, ares->controls,
ares->response, ares->error);
}
if (ares->type != LDB_REPLY_DONE) {
ldb_set_errstring(ldb, "Invalid reply type!");
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
ldb_reset_err_string(ldb);
/* Do the original add */
return ldb_next_request(ac->module, ac->req);
}
static int np_part_search_callback(struct ldb_request *req, struct ldb_reply *ares)
{
struct ldb_context *ldb;
struct np_context *ac;
struct dsdb_create_partition_exop *ex_op;
int ret;
ac = talloc_get_type(req->context, struct np_context);
ldb = ldb_module_get_ctx(ac->module);
if (!ares) {
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
/* If this already exists, we really don't want to create a
* partition - it would allow a duplicate entry to be
* created */
if (ares->error != LDB_ERR_NO_SUCH_OBJECT) {
if (ares->error == LDB_SUCCESS) {
return ldb_module_done(ac->req, ares->controls,
ares->response, LDB_ERR_ENTRY_ALREADY_EXISTS);
} else {
return ldb_module_done(ac->req, ares->controls,
ares->response, ares->error);
}
}
if (ares->type != LDB_REPLY_DONE) {
ldb_set_errstring(ldb, "Invalid reply type - we must not get a result here!");
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
ldb_reset_err_string(ldb);
/* Now that we know it does not exist, we can try and create the partition */
ex_op = talloc(ac, struct dsdb_create_partition_exop);
if (ex_op == NULL) {
ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
ex_op->new_dn = ac->req->op.add.message->dn;
ret = ldb_build_extended_req(&ac->part_add,
ldb, ac, DSDB_EXTENDED_CREATE_PARTITION_OID, ex_op,
NULL, ac, np_part_mod_callback, req);
if (ret != LDB_SUCCESS) {
return ret;
}
return ldb_next_request(ac->module, ac->part_add);
}
/* add_record: add instancetype attribute */
static int new_partition_add(struct ldb_module *module, struct ldb_request *req)
{
struct ldb_context *ldb;
struct ldb_request *down_req;
struct np_context *ac;
int ret;
ldb = ldb_module_get_ctx(module);
ldb_debug(ldb, LDB_DEBUG_TRACE, "instancetype_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);
}
if (!ldb_msg_find_element(req->op.add.message, "instanceType")) {
return ldb_next_request(module, req);
} else {
const char *no_attrs[] = { NULL };
unsigned int instanceType = ldb_msg_find_attr_as_uint(req->op.add.message, "instanceType", 0);
if (!(instanceType & INSTANCE_TYPE_IS_NC_HEAD)) {
return ldb_next_request(module, req);
}
/* Create an @PARTITIONS record for this partition -
* by asking the partitions module to do so via an
* extended operation, after first checking if the
* record already exists */
ac = talloc(req, struct np_context);
if (ac == NULL) {
return LDB_ERR_OPERATIONS_ERROR;
}
ac->module = module;
ac->req = req;
ret = ldb_build_search_req(&ac->search_req, ldb, ac, req->op.add.message->dn,
LDB_SCOPE_BASE, NULL, no_attrs, req->controls, ac,
np_part_search_callback,
req);
if (ret != LDB_SUCCESS) {
return ret;
}
return ldb_next_request(module, ac->search_req);
}
/* go on with the call chain */
return ldb_next_request(module, down_req);
}
_PUBLIC_ const struct ldb_module_ops ldb_new_partition_module_ops = {
.name = "new_partition",
.add = new_partition_add,
};
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