/*
ldb database library
- Copyright (C) Simo Sorce 2004
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
+ Copyright (C) Andrew Tridgell 2005
+ Copyright (C) Simo Sorce 2004-2008
** NOTE! The following LGPL license applies to the ldb
** library. This does NOT imply that all of Samba is released
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 2 of the License, or (at your option) any later version.
+ 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
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, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
/*
*/
#include "includes.h"
-#include "ldb/include/ldb.h"
-#include "ldb/include/ldb_private.h"
+#include "ldb_module.h"
#include "librpc/gen_ndr/ndr_misc.h"
-#include <time.h>
-
-static int objectguid_search(struct ldb_module *module, const struct ldb_dn *base,
- enum ldb_scope scope, const char *expression,
- const char * const *attrs, struct ldb_message ***res)
-{
- ldb_debug(module->ldb, LDB_DEBUG_TRACE, "objectguid_search\n");
- return ldb_next_search(module, base, scope, expression, attrs, res);
-}
-
-static int objectguid_search_bytree(struct ldb_module *module, const struct ldb_dn *base,
- enum ldb_scope scope, struct ldb_parse_tree *tree,
- const char * const *attrs, struct ldb_message ***res)
-{
- ldb_debug(module->ldb, LDB_DEBUG_TRACE, "objectguid_search\n");
- return ldb_next_search_bytree(module, base, scope, tree, attrs, res);
-}
+#include "param/param.h"
static struct ldb_message_element *objectguid_find_attribute(const struct ldb_message *msg, const char *name)
{
return NULL;
}
-/* add_record: add crateTimestamp/modifyTimestamp attributes */
-static int objectguid_add_record(struct ldb_module *module, const struct ldb_message *msg)
+/*
+ add a time element to a record
+*/
+static int add_time_element(struct ldb_message *msg, const char *attr, time_t t)
{
- struct ldb_val v;
- struct ldb_message *msg2;
- struct ldb_message_element *attribute;
- struct GUID guid;
- NTSTATUS nt_status;
- int ret, i;
+ struct ldb_message_element *el;
+ char *s;
- ldb_debug(module->ldb, LDB_DEBUG_TRACE, "objectguid_add_record\n");
-
- if (ldb_dn_is_special(msg->dn)) { /* do not manipulate our control entries */
- return ldb_next_add_record(module, msg);
+ if (ldb_msg_find_element(msg, attr) != NULL) {
+ return 0;
}
- if ((attribute = objectguid_find_attribute(msg, "objectGUID")) != NULL ) {
- return ldb_next_add_record(module, msg);
+ s = ldb_timestring(msg, t);
+ if (s == NULL) {
+ return -1;
}
- msg2 = talloc(module, struct ldb_message);
- if (!msg2) {
+ if (ldb_msg_add_string(msg, attr, s) != 0) {
return -1;
}
- msg2->dn = msg->dn;
- msg2->num_elements = msg->num_elements;
- msg2->private_data = msg->private_data;
- msg2->elements = talloc_array(msg2, struct ldb_message_element, msg2->num_elements);
- for (i = 0; i < msg2->num_elements; i++) {
- msg2->elements[i] = msg->elements[i];
- }
+ el = ldb_msg_find_element(msg, attr);
+ /* always set as replace. This works because on add ops, the flag
+ is ignored */
+ el->flags = LDB_FLAG_MOD_REPLACE;
- /* a new GUID */
- guid = GUID_random();
+ return 0;
+}
- nt_status = ndr_push_struct_blob(&v, msg2, &guid,
- (ndr_push_flags_fn_t)ndr_push_GUID);
- if (!NT_STATUS_IS_OK(nt_status)) {
- return -1;
+/*
+ add a uint64_t element to a record
+*/
+static int add_uint64_element(struct ldb_message *msg, const char *attr, uint64_t v)
+{
+ struct ldb_message_element *el;
+
+ if (ldb_msg_find_element(msg, attr) != NULL) {
+ return 0;
}
- ret = ldb_msg_add_value(module->ldb, msg2, "objectGUID", &v);
- if (ret) {
- return ret;
+ if (ldb_msg_add_fmt(msg, attr, "%llu", (unsigned long long)v) != 0) {
+ return -1;
}
- ret = ldb_next_add_record(module, msg2);
- talloc_free(msg2);
+ el = ldb_msg_find_element(msg, attr);
+ /* always set as replace. This works because on add ops, the flag
+ is ignored */
+ el->flags = LDB_FLAG_MOD_REPLACE;
- return ret;
+ return 0;
}
-/* modify_record: change modifyTimestamp as well */
-static int objectguid_modify_record(struct ldb_module *module, const struct ldb_message *msg)
-{
- ldb_debug(module->ldb, LDB_DEBUG_TRACE, "objectguid_modify_record\n");
- return ldb_next_modify_record(module, msg);
-}
+struct og_context {
+ struct ldb_module *module;
+ struct ldb_request *req;
+};
-static int objectguid_delete_record(struct ldb_module *module, const struct ldb_dn *dn)
+static int og_op_callback(struct ldb_request *req, struct ldb_reply *ares)
{
- ldb_debug(module->ldb, LDB_DEBUG_TRACE, "objectguid_delete_record\n");
- return ldb_next_delete_record(module, dn);
-}
+ struct og_context *ac;
-static int objectguid_rename_record(struct ldb_module *module, const struct ldb_dn *olddn, const struct ldb_dn *newdn)
-{
- ldb_debug(module->ldb, LDB_DEBUG_TRACE, "objectguid_rename_record\n");
- return ldb_next_rename_record(module, olddn, newdn);
-}
+ ac = talloc_get_type(req->context, struct og_context);
-static int objectguid_start_trans(struct ldb_module *module)
-{
- ldb_debug(module->ldb, LDB_DEBUG_TRACE, "objectguid_start_trans\n");
- return ldb_next_start_trans(module);
+ 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);
+ }
+
+ if (ares->type != LDB_REPLY_DONE) {
+ talloc_free(ares);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, ares->error);
}
-static int objectguid_end_trans(struct ldb_module *module, int status)
+/* add_record: add objectGUID attribute */
+static int objectguid_add(struct ldb_module *module, struct ldb_request *req)
{
- ldb_debug(module->ldb, LDB_DEBUG_TRACE, "objectguid_end_trans\n");
- return ldb_next_end_trans(module, status);
+ struct ldb_context *ldb;
+ struct ldb_request *down_req;
+ struct ldb_message_element *attribute;
+ struct ldb_message *msg;
+ struct ldb_val v;
+ struct GUID guid;
+ uint64_t seq_num;
+ enum ndr_err_code ndr_err;
+ int ret;
+ time_t t = time(NULL);
+ struct og_context *ac;
+
+ ldb = ldb_module_get_ctx(module);
+
+ ldb_debug(ldb, LDB_DEBUG_TRACE, "objectguid_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 ((attribute = objectguid_find_attribute(req->op.add.message, "objectGUID")) != NULL ) {
+ return ldb_next_request(module, req);
+ }
+
+ ac = talloc(req, struct og_context);
+ if (ac == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ac->module = module;
+ ac->req = req;
+
+ /* we have to copy the message as the caller might have it as a const */
+ msg = ldb_msg_copy_shallow(ac, req->op.add.message);
+ if (msg == NULL) {
+ talloc_free(down_req);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* a new GUID */
+ guid = GUID_random();
+
+ ndr_err = ndr_push_struct_blob(&v, msg,
+ lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
+ &guid,
+ (ndr_push_flags_fn_t)ndr_push_GUID);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = ldb_msg_add_value(msg, "objectGUID", &v, NULL);
+ if (ret) {
+ return ret;
+ }
+
+ if (add_time_element(msg, "whenCreated", t) != 0 ||
+ add_time_element(msg, "whenChanged", t) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* Get a sequence number from the backend */
+ /* FIXME: ldb_sequence_number is a semi-async call,
+ * make sure this function is split and a callback is used */
+ ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
+ if (ret == LDB_SUCCESS) {
+ if (add_uint64_element(msg, "uSNCreated", seq_num) != 0 ||
+ add_uint64_element(msg, "uSNChanged", seq_num) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
+
+ ret = ldb_build_add_req(&down_req, ldb, ac,
+ msg,
+ req->controls,
+ ac, og_op_callback,
+ req);
+ if (ret != LDB_SUCCESS) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* go on with the call chain */
+ return ldb_next_request(module, down_req);
}
-static int objectguid_destructor(void *module_ctx)
+/* modify_record: update timestamps */
+static int objectguid_modify(struct ldb_module *module, struct ldb_request *req)
{
- /* struct ldb_module *ctx = module_ctx; */
- /* put your clean-up functions here */
- return 0;
-}
+ struct ldb_context *ldb;
+ struct ldb_request *down_req;
+ struct ldb_message *msg;
+ int ret;
+ time_t t = time(NULL);
+ uint64_t seq_num;
+ struct og_context *ac;
-static const struct ldb_module_ops objectguid_ops = {
- .name = "objectguid",
- .search = objectguid_search,
- .search_bytree = objectguid_search_bytree,
- .add_record = objectguid_add_record,
- .modify_record = objectguid_modify_record,
- .delete_record = objectguid_delete_record,
- .rename_record = objectguid_rename_record,
- .start_transaction = objectguid_start_trans,
- .end_transaction = objectguid_end_trans
-};
+ ldb = ldb_module_get_ctx(module);
+ ldb_debug(ldb, LDB_DEBUG_TRACE, "objectguid_add_record\n");
-/* the init function */
-#ifdef HAVE_DLOPEN_DISABLED
- struct ldb_module *init_module(struct ldb_context *ldb, const char *options[])
-#else
-struct ldb_module *objectguid_module_init(struct ldb_context *ldb, const char *options[])
-#endif
-{
- struct ldb_module *ctx;
+ /* do not manipulate our control entries */
+ if (ldb_dn_is_special(req->op.add.message->dn)) {
+ return ldb_next_request(module, req);
+ }
- ctx = talloc(ldb, struct ldb_module);
- if (!ctx)
- return NULL;
+ ac = talloc(req, struct og_context);
+ if (ac == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ac->module = module;
+ ac->req = req;
- ctx->private_data = NULL;
- ctx->ldb = ldb;
- ctx->prev = ctx->next = NULL;
- ctx->ops = &objectguid_ops;
+ /* we have to copy the message as the caller might have it as a const */
+ msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
+ if (msg == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (add_time_element(msg, "whenChanged", t) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* Get a sequence number from the backend */
+ ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
+ if (ret == LDB_SUCCESS) {
+ if (add_uint64_element(msg, "uSNChanged", seq_num) != 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
- talloc_set_destructor (ctx, objectguid_destructor);
+ ret = ldb_build_mod_req(&down_req, ldb, ac,
+ msg,
+ req->controls,
+ ac, og_op_callback,
+ req);
+ if (ret != LDB_SUCCESS) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
- return ctx;
+ /* go on with the call chain */
+ return ldb_next_request(module, down_req);
}
+
+_PUBLIC_ const struct ldb_module_ops ldb_objectguid_module_ops = {
+ .name = "objectguid",
+ .add = objectguid_add,
+ .modify = objectguid_modify,
+};
git.samba.org / metze / samba / wip.git / blobdiff