Sync ldb with upstream (includes uncommitted ldb async patches)

6 files changed, 791 insertions, 1251 deletions

diff --git a/ldb/modules/asq.c b/ldb/modules/asq.c
index eb27263b1..17896a006 100644
--- a/ldb/modules/asq.c
+++ b/ldb/modules/asq.c
@@ -1,7 +1,7 @@
 /* 
    ldb database library
 
-   Copyright (C) Simo Sorce  2005
+   Copyright (C) Simo Sorce  2005-2008
 
      ** NOTE! The following LGPL license applies to the ldb
      ** library. This does NOT imply that all of Samba is released
@@ -36,10 +36,10 @@
 
 struct asq_context {
 
-	enum {ASQ_INIT, ASQ_SEARCH_BASE, ASQ_SEARCH_MULTI} step;
+	enum {ASQ_SEARCH_BASE, ASQ_SEARCH_MULTI} step;
 
 	struct ldb_module *module;
-	struct ldb_request *orig_req;
+	struct ldb_request *req;
 
 	struct ldb_asq_control *asq_ctrl;
 
@@ -52,7 +52,6 @@ struct asq_context {
 		ASQ_CTRL_AFFECTS_MULTIPLE_DSA		= 71
 	} asq_ret;
 
-	struct ldb_request *base_req;
 	struct ldb_reply *base_res;
 
 	struct ldb_request **reqs;
@@ -62,192 +61,200 @@ struct asq_context {
 	struct ldb_control **controls;
 };
 
-static struct ldb_handle *init_handle(struct ldb_request *req, struct ldb_module *module)
+static struct asq_context *asq_context_init(struct ldb_module *module, struct ldb_request *req)
 {
 	struct asq_context *ac;
-	struct ldb_handle *h;
-
-	h = talloc_zero(req, struct ldb_handle);
-	if (h == NULL) {
-		ldb_set_errstring(module->ldb, "Out of Memory");
-		return NULL;
-	}
 
-	h->module = module;
-
-	ac = talloc_zero(h, struct asq_context);
+	ac = talloc_zero(req, struct asq_context);
 	if (ac == NULL) {
-		ldb_set_errstring(module->ldb, "Out of Memory");
-		talloc_free(h);
+		ldb_oom(module->ldb);
 		return NULL;
 	}
 
-	h->private_data = (void *)ac;
-
-	h->state = LDB_ASYNC_INIT;
-	h->status = LDB_SUCCESS;
-
-	ac->step = ASQ_INIT;
 	ac->module = module;
-	ac->orig_req = req;
+	ac->req = req;
 
-	return h;
+	return ac;
 }
 
-static int asq_terminate(struct ldb_handle *handle)
+static int asq_search_continue(struct asq_context *ac);
+
+static int asq_search_terminate(struct asq_context *ac)
 {
-	struct asq_context *ac;
-	struct ldb_reply *ares;
 	struct ldb_asq_control *asq;
 	int i;
 
-	ac = talloc_get_type(handle->private_data, struct asq_context);
-	if (ac == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	handle->status = LDB_SUCCESS;
-	handle->state = LDB_ASYNC_DONE;
-
-	ares = talloc_zero(ac, struct ldb_reply);
-	if (ares == NULL)
-		return LDB_ERR_OPERATIONS_ERROR;
-
-	ares->type = LDB_REPLY_DONE;
-
 	if (ac->controls) {
-		for (i = 0; ac->controls[i]; i++);
-		ares->controls = talloc_move(ares, &ac->controls);
+		for (i = 0; ac->controls[i]; i++) /* count em */ ;
 	} else {
 		i = 0;
 	}
 
-	ares->controls = talloc_realloc(ares, ares->controls, struct ldb_control *, i + 2);
-	
-	if (ares->controls == NULL)
+	ac->controls = talloc_realloc(ac, ac->controls, struct ldb_control *, i + 2);
+
+	if (ac->controls == NULL) {
 		return LDB_ERR_OPERATIONS_ERROR;
+	}
 
-	ares->controls[i] = talloc(ares->controls, struct ldb_control);
-	if (ares->controls[i] == NULL)
+	ac->controls[i] = talloc(ac->controls, struct ldb_control);
+	if (ac->controls[i] == NULL) {
 		return LDB_ERR_OPERATIONS_ERROR;
+	}
 
-	ares->controls[i]->oid = LDB_CONTROL_ASQ_OID;
-	ares->controls[i]->critical = 0;
+	ac->controls[i]->oid = LDB_CONTROL_ASQ_OID;
+	ac->controls[i]->critical = 0;
 
-	asq = talloc_zero(ares->controls[i], struct ldb_asq_control);
+	asq = talloc_zero(ac->controls[i], struct ldb_asq_control);
 	if (asq == NULL)
 		return LDB_ERR_OPERATIONS_ERROR;
 
 	asq->result = ac->asq_ret;
-	
-	ares->controls[i]->data = asq;
 
-	ares->controls[i + 1] = NULL;
+	ac->controls[i]->data = asq;
 
-	ac->orig_req->callback(ac->module->ldb, ac->orig_req->context, ares);
+	ac->controls[i + 1] = NULL;
 
-	return LDB_SUCCESS;
+	return ldb_module_done(ac->req, ac->controls, NULL, LDB_SUCCESS);
 }
 
-static int asq_base_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares)
+static int asq_base_callback(struct ldb_request *req, struct ldb_reply *ares)
 {
 	struct asq_context *ac;
+	int ret;
 
-	if (!context || !ares) {
-		ldb_set_errstring(ldb, "NULL Context or Result in callback");
-		goto error;
-	}
+	ac = talloc_get_type(req->context, struct asq_context);
 
-	ac = talloc_get_type(context, struct asq_context);
-	if (ac == NULL) {
-		goto error;
+	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);
 	}
 
-	/* we are interested only in the single reply (base search) we receive here */
-	if (ares->type == LDB_REPLY_ENTRY) {
+	switch (ares->type) {
+	case LDB_REPLY_ENTRY:
 		ac->base_res = talloc_move(ac, &ares);
-	} else {
+		break;
+
+	case LDB_REPLY_REFERRAL:
+		/* ignore referrals */
 		talloc_free(ares);
-	}
+		break;
 
+	case LDB_REPLY_DONE:
+
+		talloc_free(ares);
+
+		/* next step */
+		ret = asq_search_continue(ac);
+		if (ret != LDB_SUCCESS) {
+			return ldb_module_done(ac->req, NULL, NULL, ret);
+		}
+		break;
+
+	}
 	return LDB_SUCCESS;
-error:
-	talloc_free(ares);
-	return LDB_ERR_OPERATIONS_ERROR;
 }
 
-static int asq_reqs_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares)
+static int asq_reqs_callback(struct ldb_request *req, struct ldb_reply *ares)
 {
 	struct asq_context *ac;
+	int ret;
 
-	if (!context || !ares) {
-		ldb_set_errstring(ldb, "NULL Context or Result in callback");
-		goto error;
-	}
+	ac = talloc_get_type(req->context, struct asq_context);
 
-	ac = talloc_get_type(context, struct asq_context);
-	if (ac == NULL) {
-		goto error;
+	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);
 	}
 
-	/* we are interested only in the single reply (base search) we receive here */
-	if (ares->type == LDB_REPLY_ENTRY) {
-
+	switch (ares->type) {
+	case LDB_REPLY_ENTRY:
 		/* pass the message up to the original callback as we
 		 * do not have to elaborate on it any further */
-		return ac->orig_req->callback(ac->module->ldb, ac->orig_req->context, ares);
-		
-	} else { /* ignore any REFERRAL or DONE reply */
+		ret = ldb_module_send_entry(ac->req, ares->message);
+		if (ret != LDB_SUCCESS) {
+			return ldb_module_done(ac->req, NULL, NULL, ret);
+		}
+		talloc_free(ares);
+		break;
+
+	case LDB_REPLY_REFERRAL:
+		/* ignore referrals */
+		talloc_free(ares);
+		break;
+
+	case LDB_REPLY_DONE:
+
 		talloc_free(ares);
+
+		ret = asq_search_continue(ac);
+		if (ret != LDB_SUCCESS) {
+			return ldb_module_done(ac->req, NULL, NULL, ret);
+		}
+		break;
 	}
 
 	return LDB_SUCCESS;
-error:
-	talloc_free(ares);
-	return LDB_ERR_OPERATIONS_ERROR;
 }
 
-static int asq_build_first_request(struct asq_context *ac)
+static int asq_build_first_request(struct asq_context *ac, struct ldb_request **base_req)
 {
-	char **base_attrs;
+	const char **base_attrs;
+	int ret;
 
-	ac->base_req = talloc_zero(ac, struct ldb_request);
-	if (ac->base_req == NULL) return LDB_ERR_OPERATIONS_ERROR;
+	ac->req_attrs = ac->req->op.search.attrs;
+	ac->req_attribute = talloc_strdup(ac, ac->asq_ctrl->source_attribute);
+	if (ac->req_attribute == NULL)
+		return LDB_ERR_OPERATIONS_ERROR;
 
-	ac->base_req->operation = ac->orig_req->operation;
-	ac->base_req->op.search.base = ac->orig_req->op.search.base;
-	ac->base_req->op.search.scope = LDB_SCOPE_BASE;
-	ac->base_req->op.search.tree = ac->orig_req->op.search.tree;
-	base_attrs = talloc_array(ac->base_req, char *, 2);
+	base_attrs = talloc_array(ac, const char *, 2);
 	if (base_attrs == NULL) return LDB_ERR_OPERATIONS_ERROR;
 
 	base_attrs[0] = talloc_strdup(base_attrs, ac->asq_ctrl->source_attribute);
 	if (base_attrs[0] == NULL) return LDB_ERR_OPERATIONS_ERROR;
 
 	base_attrs[1] = NULL;
-	ac->base_req->op.search.attrs = (const char * const *)base_attrs;
 
-	ac->base_req->context = ac;
-	ac->base_req->callback = asq_base_callback;
-	ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->base_req);
+	ret = ldb_build_search_req_ex(base_req, ac->module->ldb, ac,
+					ac->req->op.search.base,
+					LDB_SCOPE_BASE,
+					ac->req->op.search.tree,
+					(const char * const *)base_attrs,
+					NULL,
+					ac, asq_base_callback,
+					ac->req);
+	if (ret != LDB_SUCCESS) {
+		return LDB_ERR_OPERATIONS_ERROR;
+	}
 
 	return LDB_SUCCESS;
 }
 
-static int asq_build_multiple_requests(struct asq_context *ac, struct ldb_handle *handle)
+static int asq_build_multiple_requests(struct asq_context *ac, bool *terminated)
 {
+	struct ldb_control **saved_controls;
+	struct ldb_control *control;
+	struct ldb_dn *dn;
 	struct ldb_message_element *el;
-	int i;
+	int ret, i;
 
-	/* look up the DNs */
 	if (ac->base_res == NULL) {
 		return LDB_ERR_NO_SUCH_OBJECT;
 	}
+
 	el = ldb_msg_find_element(ac->base_res->message, ac->req_attribute);
 	/* no values found */
 	if (el == NULL) {
 		ac->asq_ret = ASQ_CTRL_SUCCESS;
-		return asq_terminate(handle);
+		*terminated = true;
+		return asq_search_terminate(ac);
 	}
 
 	ac->num_reqs = el->num_values;
@@ -259,144 +266,75 @@ static int asq_build_multiple_requests(struct asq_context *ac, struct ldb_handle
 
 	for (i = 0; i < el->num_values; i++) {
 
-		ac->reqs[i] = talloc_zero(ac->reqs, struct ldb_request);
-		if (ac->reqs[i] == NULL)
-			return LDB_ERR_OPERATIONS_ERROR;
-		ac->reqs[i]->operation = LDB_SEARCH;
-		ac->reqs[i]->op.search.base = ldb_dn_new(ac->reqs[i], ac->module->ldb, (const char *)el->values[i].data);
-		if ( ! ldb_dn_validate(ac->reqs[i]->op.search.base)) {
+		dn = ldb_dn_new(ac, ac->module->ldb,
+				(const char *)el->values[i].data);
+		if ( ! ldb_dn_validate(dn)) {
 			ac->asq_ret = ASQ_CTRL_INVALID_ATTRIBUTE_SYNTAX;
-			return asq_terminate(handle);
+			*terminated = true;
+			return asq_search_terminate(ac);
+		}
+
+		ret = ldb_build_search_req_ex(&ac->reqs[i],
+						ac->module->ldb, ac,
+						dn, LDB_SCOPE_BASE,
+						ac->req->op.search.tree,
+						ac->req_attrs,
+						ac->req->controls,
+						ac, asq_reqs_callback,
+						ac->req);
+		if (ret != LDB_SUCCESS) {
+			return LDB_ERR_OPERATIONS_ERROR;
 		}
-		ac->reqs[i]->op.search.scope = LDB_SCOPE_BASE;
-		ac->reqs[i]->op.search.tree = ac->base_req->op.search.tree;
-		ac->reqs[i]->op.search.attrs = ac->req_attrs;
 
-		ac->reqs[i]->context = ac;
-		ac->reqs[i]->callback = asq_reqs_callback;
-		ldb_set_timeout_from_prev_req(ac->module->ldb, ac->base_req, ac->reqs[i]);
+		/* remove the ASQ control itself */
+		control = ldb_request_get_control(ac->req, LDB_CONTROL_ASQ_OID);
+		if (!save_controls(control, ac->reqs[i], &saved_controls)) {
+			return LDB_ERR_OPERATIONS_ERROR;
+		}
 	}
 
 	return LDB_SUCCESS;
 }
 
-static int asq_search_continue(struct ldb_handle *handle)
+static int asq_search_continue(struct asq_context *ac)
 {
-	struct asq_context *ac;
+	bool terminated = false;
 	int ret;
-    
-	if (!handle || !handle->private_data) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	if (handle->state == LDB_ASYNC_DONE) {
-		return handle->status;
-	}
-
-	ac = talloc_get_type(handle->private_data, struct asq_context);
-	if (ac == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
 
 	switch (ac->step) {
-	case ASQ_INIT:
-		/* check the search is well formed */
-		if (ac->orig_req->op.search.scope != LDB_SCOPE_BASE) {
-			ac->asq_ret = ASQ_CTRL_UNWILLING_TO_PERFORM;
-			return asq_terminate(handle);
-		}
-
-		ac->req_attrs = ac->orig_req->op.search.attrs;
-		ac->req_attribute = talloc_strdup(ac, ac->asq_ctrl->source_attribute);
-		if (ac->req_attribute == NULL)
-			return LDB_ERR_OPERATIONS_ERROR;
-
-		/* get the object to retrieve the DNs to search */
-		ret = asq_build_first_request(ac);
-		if (ret != LDB_SUCCESS) {
-			return ret;
-		}
-	
-		ac->step = ASQ_SEARCH_BASE;
-
-		handle->state = LDB_ASYNC_PENDING;
-		handle->status = LDB_SUCCESS;
-
-		return ldb_request(ac->module->ldb, ac->base_req);
-
 	case ASQ_SEARCH_BASE:
 
-		ret = ldb_wait(ac->base_req->handle, LDB_WAIT_NONE);
-		
-		if (ret != LDB_SUCCESS) {
-			handle->status = ret;
-			goto done;
-		}
-
-		if (ac->base_req->handle->status != LDB_SUCCESS) {
-			handle->status = ac->base_req->handle->status;
-			goto done;
+		/* build up the requests call chain */
+		ret = asq_build_multiple_requests(ac, &terminated);
+		if (ret != LDB_SUCCESS || terminated) {
+			return ret;
 		}
 
-		if (ac->base_req->handle->state == LDB_ASYNC_DONE) {
+		ac->step = ASQ_SEARCH_MULTI;
 
-			/* build up the requests call chain */
-			ret = asq_build_multiple_requests(ac, handle);
-			if (ret != LDB_SUCCESS) {
-				return ret;
-			}
-			if (handle->state == LDB_ASYNC_DONE) {
-				return LDB_SUCCESS;
-			}
-
-			ac->step = ASQ_SEARCH_MULTI;
-
-			return ldb_request(ac->module->ldb, ac->reqs[ac->cur_req]);
-		}
-
-		/* request still pending, return to cycle again */
-		return LDB_SUCCESS;
+		return ldb_request(ac->module->ldb, ac->reqs[ac->cur_req]);
 
 	case ASQ_SEARCH_MULTI:
 
-		ret = ldb_wait(ac->reqs[ac->cur_req]->handle, LDB_WAIT_NONE);
-		
-		if (ret != LDB_SUCCESS) {
-			handle->status = ret;
-			goto done;
-		}
-		if (ac->reqs[ac->cur_req]->handle->status != LDB_SUCCESS) {
-			handle->status = ac->reqs[ac->cur_req]->handle->status;
-		}
-
-		if (ac->reqs[ac->cur_req]->handle->state == LDB_ASYNC_DONE) {
-			ac->cur_req++;
+		ac->cur_req++;
 
-			if (ac->cur_req < ac->num_reqs) {
-				return ldb_request(ac->module->ldb, ac->reqs[ac->cur_req]);
-			}
-
-			return asq_terminate(handle);
+		if (ac->cur_req == ac->num_reqs) {
+			/* done */
+			return asq_search_terminate(ac);
 		}
 
-		/* request still pending, return to cycle again */
-		return LDB_SUCCESS;
-
-	default:
-		ret = LDB_ERR_OPERATIONS_ERROR;
-		break;
+		return ldb_request(ac->module->ldb, ac->reqs[ac->cur_req]);
 	}
 
-done:
-	handle->state = LDB_ASYNC_DONE;
-	return ret;
+	return LDB_ERR_OPERATIONS_ERROR;
 }
 
 static int asq_search(struct ldb_module *module, struct ldb_request *req)
 {
+	struct ldb_request *base_req;
 	struct ldb_control *control;
 	struct asq_context *ac;
-	struct ldb_handle *h;
+	int ret;
 
 	/* check if there's a paged request control */
 	control = ldb_request_get_control(req, LDB_CONTROL_ASQ_OID);
@@ -405,67 +343,37 @@ static int asq_search(struct ldb_module *module, struct ldb_request *req)
 		return ldb_next_request(module, req);
 	}
 
-	req->handle = NULL;
-
-	if (!req->callback || !req->context) {
-		ldb_set_errstring(module->ldb,
-				  "Async interface called with NULL callback function or NULL context");
+	ac = asq_context_init(module, req);
+	if (!ac) {
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
 
-	h = init_handle(req, module);
-	if (!h) {
-		return LDB_ERR_OPERATIONS_ERROR;
+	/* check the search is well formed */
+	if (req->op.search.scope != LDB_SCOPE_BASE) {
+		ac->asq_ret = ASQ_CTRL_UNWILLING_TO_PERFORM;
+		return asq_search_terminate(ac);
 	}
-	ac = talloc_get_type(h->private_data, struct asq_context);
 
 	ac->asq_ctrl = talloc_get_type(control->data, struct ldb_asq_control);
 	if (!ac->asq_ctrl) {
 		return LDB_ERR_PROTOCOL_ERROR;
 	}
 
-	req->handle = h;
-
-	return asq_search_continue(h);
-}
-
-static int asq_wait(struct ldb_handle *handle, enum ldb_wait_type type)
-{
-	int ret;
-
-	if (!handle || !handle->private_data) {
-		return LDB_ERR_OPERATIONS_ERROR;
+	ret = asq_build_first_request(ac, &base_req);
+	if (ret != LDB_SUCCESS) {
+		return ret;
 	}
 
-	if (type == LDB_WAIT_ALL) {
-		while (handle->state != LDB_ASYNC_DONE) {
-			ret = asq_search_continue(handle);
-			if (ret != LDB_SUCCESS) {
-				return ret;
-			}
-		}
-
-		return handle->status;
-	}
+	ac->step = ASQ_SEARCH_BASE;
 
-	return asq_search_continue(handle);
+	return ldb_request(module->ldb, base_req);
 }
 
 static int asq_init(struct ldb_module *module)
 {
-	struct ldb_request *req;
 	int ret;
 
-	req = talloc_zero(module, struct ldb_request);
-	if (req == NULL) {
-		ldb_debug(module->ldb, LDB_DEBUG_ERROR, "asq: Out of memory!\n");
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	req->operation = LDB_REQ_REGISTER_CONTROL;
-	req->op.reg_control.oid = LDB_CONTROL_ASQ_OID;
-
-	ret = ldb_request(module->ldb, req);
+	ret = ldb_mod_register_control(module, LDB_CONTROL_ASQ_OID);
 	if (ret != LDB_SUCCESS) {
 		ldb_debug(module->ldb, LDB_DEBUG_WARNING, "asq: Unable to register control with rootdse!\n");
 	}
@@ -476,6 +384,5 @@ static int asq_init(struct ldb_module *module)
 const struct ldb_module_ops ldb_asq_module_ops = {
 	.name		   = "asq",
 	.search		   = asq_search,
-	.wait              = asq_wait,
 	.init_context	   = asq_init
 };
diff --git a/ldb/modules/operational.c b/ldb/modules/operational.c
index a59e81bec..abb1d4ca1 100644
--- a/ldb/modules/operational.c
+++ b/ldb/modules/operational.c
@@ -2,7 +2,7 @@
    ldb database library
 
    Copyright (C) Andrew Tridgell 2005
-   Copyright (C) Simo Sorce 2006
+   Copyright (C) Simo Sorce 2006-2008
 
      ** NOTE! The following LGPL license applies to the ldb
      ** library. This does NOT imply that all of Samba is released
@@ -173,38 +173,53 @@ failed:
 */
 
 struct operational_context {
-
 	struct ldb_module *module;
-	void *up_context;
-	int (*up_callback)(struct ldb_context *, void *, struct ldb_reply *);
+	struct ldb_request *req;
 
 	const char * const *attrs;
 };
 
-static int operational_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares)
+static int operational_callback(struct ldb_request *req, struct ldb_reply *ares)
 {
 	struct operational_context *ac;
+	int ret;
 
-	if (!context || !ares) {
-		ldb_set_errstring(ldb, "NULL Context or Result in callback");
-		goto error;
-	}
+	ac = talloc_get_type(req->context, struct operational_context);
 
-	ac = talloc_get_type(context, struct operational_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);
+	}
 
-	if (ares->type == LDB_REPLY_ENTRY) {
+	switch (ares->type) {
+	case LDB_REPLY_ENTRY:
 		/* for each record returned post-process to add any derived
 		   attributes that have been asked for */
-		if (operational_search_post_process(ac->module, ares->message, ac->attrs) != 0) {
-			goto error;
+		ret = operational_search_post_process(ac->module,
+							ares->message,
+							ac->attrs);
+		if (ret != 0) {
+			return ldb_module_done(ac->req, NULL, NULL,
+						LDB_ERR_OPERATIONS_ERROR);
 		}
-	}
+		return ldb_module_send_entry(ac->req, ares->message);
 
-	return ac->up_callback(ldb, ac->up_context, ares);
+	case LDB_REPLY_REFERRAL:
+		/* ignore referrals */
+		break;
+
+	case LDB_REPLY_DONE:
+
+		return ldb_module_done(ac->req, ares->controls,
+					ares->response, LDB_SUCCESS);
+	}
 
-error:
 	talloc_free(ares);
-	return LDB_ERR_OPERATIONS_ERROR;
+	return LDB_SUCCESS;
 }
 
 static int operational_search(struct ldb_module *module, struct ldb_request *req)
@@ -212,9 +227,8 @@ static int operational_search(struct ldb_module *module, struct ldb_request *req
 	struct operational_context *ac;
 	struct ldb_request *down_req;
 	const char **search_attrs = NULL;
-	int i, a, ret;
-
-	req->handle = NULL;
+	int i, a;
+	int ret;
 
 	ac = talloc(req, struct operational_context);
 	if (ac == NULL) {
@@ -222,21 +236,10 @@ static int operational_search(struct ldb_module *module, struct ldb_request *req
 	}
 
 	ac->module = module;
-	ac->up_context = req->context;
-	ac->up_callback = req->callback;
+	ac->req = req;
 	ac->attrs = req->op.search.attrs;
 
-	down_req = talloc_zero(req, struct ldb_request);
-	if (down_req == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	down_req->operation = req->operation;
-	down_req->op.search.base = req->op.search.base;
-	down_req->op.search.scope = req->op.search.scope;
-	down_req->op.search.tree = req->op.search.tree;
-
-	/*  FIXME: I hink we should copy the tree and keep the original
+	/*  FIXME: We must copy the tree and keep the original
 	 *  unmodified. SSS */
 	/* replace any attributes in the parse tree that are
 	   searchable, but are stored using a different name in the
@@ -264,27 +267,26 @@ static int operational_search(struct ldb_module *module, struct ldb_request *req
 			}
 		}
 	}
-	
-	/* use new set of attrs if any */
-	if (search_attrs) down_req->op.search.attrs = search_attrs;
-	else down_req->op.search.attrs = req->op.search.attrs;
-	
-	down_req->controls = req->controls;
-
-	down_req->context = ac;
-	down_req->callback = operational_callback;
-	ldb_set_timeout_from_prev_req(module->ldb, req, down_req);
 
-	/* perform the search */
-	ret = ldb_next_request(module, down_req);
+	/* use new set of attrs if any */
+	if (search_attrs == NULL) {
+		search_attrs = req->op.search.attrs;
+	}
 
-	/* do not free down_req as the call results may be linked to it,
-	 * it will be freed when the upper level request get freed */
-	if (ret == LDB_SUCCESS) {
-		req->handle = down_req->handle;
+	ret = ldb_build_search_req_ex(&down_req, module->ldb, ac,
+					req->op.search.base,
+					req->op.search.scope,
+					req->op.search.tree,
+					(const char * const *)search_attrs,
+					req->controls,
+					ac, operational_callback,
+					req);
+	if (ret != LDB_SUCCESS) {
+		return LDB_ERR_OPERATIONS_ERROR;
 	}
 
-	return ret;
+	/* perform the search */
+	return ldb_next_request(module, down_req);
 }
 
 static int operational_init(struct ldb_module *ctx)
diff --git a/ldb/modules/paged_results.c b/ldb/modules/paged_results.c
index b62b1f92c..d3bb83bbc 100644
--- a/ldb/modules/paged_results.c
+++ b/ldb/modules/paged_results.c
@@ -1,7 +1,7 @@
 /* 
    ldb database library
 
-   Copyright (C) Simo Sorce  2005-2006
+   Copyright (C) Simo Sorce  2005-2008
 
      ** NOTE! The following LGPL license applies to the ldb
      ** library. This does NOT imply that all of Samba is released
@@ -51,9 +51,8 @@ struct results_store {
 	char *cookie;
 	time_t timestamp;
 
-	struct results_store *prev;
 	struct results_store *next;
-	
+
 	struct message_store *first;
 	struct message_store *last;
 	int num_entries;
@@ -62,8 +61,6 @@ struct results_store {
 	struct message_store *last_ref;
 
 	struct ldb_control **controls;
-
-	struct ldb_request *req;
 };
 
 struct private_data {
@@ -73,20 +70,25 @@ struct private_data {
 	
 };
 
-int store_destructor(struct results_store *store)
+int store_destructor(struct results_store *del)
 {
-	if (store->prev) {
-		store->prev->next = store->next;
-	}
-	if (store->next) {
-		store->next->prev = store->prev;
+	struct private_data *priv = del->priv;
+	struct results_store *loop;
+
+	if (priv->store == del) {
+		priv->store = del->next;
+		return 0;
 	}
 
-	if (store == store->priv->store) {
-		store->priv->store = NULL;
+	for (loop = priv->store; loop; loop = loop->next) {
+		if (loop->next == del) {
+			loop->next = del->next;
+			return 0;
+		}
 	}
 
-	return 0;
+	/* is not in list ? */
+	return -1;
 }
 
 static struct results_store *new_store(struct private_data *priv)
@@ -116,10 +118,7 @@ static struct results_store *new_store(struct private_data *priv)
 	newr->first_ref = NULL;
 	newr->controls = NULL;
 
-	/* put this entry as first */
-	newr->prev = NULL;
 	newr->next = priv->store;
-	if (priv->store != NULL) priv->store->prev = newr;
 	priv->store = newr;
 
 	talloc_set_destructor(newr, store_destructor);
@@ -129,101 +128,164 @@ static struct results_store *new_store(struct private_data *priv)
 
 struct paged_context {
 	struct ldb_module *module;
-	void *up_context;
-	int (*up_callback)(struct ldb_context *, void *, struct ldb_reply *);
-
-	int size;
+	struct ldb_request *req;
 
 	struct results_store *store;
+	int size;
+	struct ldb_control **controls;
 };
 
-static struct ldb_handle *init_handle(void *mem_ctx, struct ldb_module *module,
-					    void *context,
-					    int (*callback)(struct ldb_context *, void *, struct ldb_reply *))
+static int paged_results(struct paged_context *ac)
 {
-	struct paged_context *ac;
-	struct ldb_handle *h;
+	struct ldb_paged_control *paged;
+	struct message_store *msg;
+	int i, num_ctrls, ret;
 
-	h = talloc_zero(mem_ctx, struct ldb_handle);
-	if (h == NULL) {
-		ldb_set_errstring(module->ldb, "Out of Memory");
-		return NULL;
+	if (ac->store == NULL) {
+		return LDB_ERR_OPERATIONS_ERROR;
 	}
 
-	h->module = module;
+	while (ac->store->num_entries > 0 && ac->size > 0) {
+		msg = ac->store->first;
+		ret = ldb_module_send_entry(ac->req, msg->r->message);
+		if (ret != LDB_SUCCESS) {
+			return ret;
+		}
 
-	ac = talloc_zero(h, struct paged_context);
-	if (ac == NULL) {
-		ldb_set_errstring(module->ldb, "Out of Memory");
-		talloc_free(h);
-		return NULL;
+		ac->store->first = msg->next;
+		talloc_free(msg);
+		ac->store->num_entries--;
+		ac->size--;
 	}
 
-	h->private_data = (void *)ac;
+	while (ac->store->first_ref != NULL) {
+		msg = ac->store->first_ref;
+		ret = ldb_module_send_referral(ac->req, msg->r->referral);
+		if (ret != LDB_SUCCESS) {
+			return ret;
+		}
 
-	h->state = LDB_ASYNC_INIT;
-	h->status = LDB_SUCCESS;
+		ac->store->first_ref = msg->next;
+		talloc_free(msg);
+	}
 
-	ac->module = module;
-	ac->up_context = context;
-	ac->up_callback = callback;
+	/* return result done */
+	num_ctrls = 1;
+	i = 0;
+
+	if (ac->store->controls != NULL) {
+		while (ac->store->controls[i]) i++; /* counting */
+
+		num_ctrls += i;
+	}
+
+	ac->controls = talloc_array(ac, struct ldb_control *, num_ctrls +1);
+	if (ac->controls == NULL) {
+		return LDB_ERR_OPERATIONS_ERROR;
+	}
+	ac->controls[num_ctrls] = NULL;
+
+	for (i = 0; i < (num_ctrls -1); i++) {
+		ac->controls[i] = talloc_reference(ac->controls, ac->store->controls[i]);
+	}
+
+	ac->controls[i] = talloc(ac->controls, struct ldb_control);
+	if (ac->controls[i] == NULL) {
+		return LDB_ERR_OPERATIONS_ERROR;
+	}
 
-	return h;
+	ac->controls[i]->oid = talloc_strdup(ac->controls[i],
+						LDB_CONTROL_PAGED_RESULTS_OID);
+	if (ac->controls[i]->oid == NULL) {
+		return LDB_ERR_OPERATIONS_ERROR;
+	}
+
+	ac->controls[i]->critical = 0;
+
+	paged = talloc(ac->controls[i], struct ldb_paged_control);
+	if (paged == NULL) {
+		return LDB_ERR_OPERATIONS_ERROR;
+	}
+
+	ac->controls[i]->data = paged;
+
+	if (ac->size > 0) {
+		paged->size = 0;
+		paged->cookie = NULL;
+		paged->cookie_len = 0;
+	} else {
+		paged->size = ac->store->num_entries;
+		paged->cookie = talloc_strdup(paged, ac->store->cookie);
+		paged->cookie_len = strlen(paged->cookie) + 1;
+	}
+
+	return LDB_SUCCESS;
 }
 
-static int paged_search_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares)
+static int paged_search_callback(struct ldb_request *req, struct ldb_reply *ares)
 {
-	struct paged_context *ac = NULL;
+	struct paged_context *ac ;
+	struct message_store *msg_store;
+	int ret;
 
-	if (!context || !ares) {
-		ldb_set_errstring(ldb, "NULL Context or Result in callback");
-		goto error;
+	ac = talloc_get_type(req->context, struct paged_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);
 	}
 
-	ac = talloc_get_type(context, struct paged_context);
+	switch (ares->type) {
+	case LDB_REPLY_ENTRY:
+		msg_store = talloc(ac->store, struct message_store);
+		if (msg_store == NULL) {
+			return ldb_module_done(ac->req, NULL, NULL,
+						LDB_ERR_OPERATIONS_ERROR);
+		}
+		msg_store->next = NULL;
+		msg_store->r = talloc_steal(msg_store, ares);
 
-	if (ares->type == LDB_REPLY_ENTRY) {
 		if (ac->store->first == NULL) {
-			ac->store->first = ac->store->last = talloc(ac->store, struct message_store);
+			ac->store->first = msg_store;
 		} else {
-			ac->store->last->next = talloc(ac->store, struct message_store);
-			ac->store->last = ac->store->last->next;
-		}
-		if (ac->store->last == NULL) {
-			goto error;
+			ac->store->last->next = msg_store;
 		}
+		ac->store->last = msg_store;
 
 		ac->store->num_entries++;
 
-		ac->store->last->r = talloc_steal(ac->store->last, ares);
-		ac->store->last->next = NULL;
-	}
+		break;
+
+	case LDB_REPLY_REFERRAL:
+		msg_store = talloc(ac->store, struct message_store);
+		if (msg_store == NULL) {
+			return ldb_module_done(ac->req, NULL, NULL,
+						LDB_ERR_OPERATIONS_ERROR);
+		}
+		msg_store->next = NULL;
+		msg_store->r = talloc_steal(msg_store, ares);
 
-	if (ares->type == LDB_REPLY_REFERRAL) {
 		if (ac->store->first_ref == NULL) {
-			ac->store->first_ref = ac->store->last_ref = talloc(ac->store, struct message_store);
+			ac->store->first_ref = msg_store;
 		} else {
-			ac->store->last_ref->next = talloc(ac->store, struct message_store);
-			ac->store->last_ref = ac->store->last_ref->next;
-		}
-		if (ac->store->last_ref == NULL) {
-			goto error;
+			ac->store->last_ref->next = msg_store;
 		}
+		ac->store->last_ref = msg_store;
 
-		ac->store->last_ref->r = talloc_steal(ac->store->last, ares);
-		ac->store->last_ref->next = NULL;
-	}
+		break;
 
-	if (ares->type == LDB_REPLY_DONE) {
+	case LDB_REPLY_DONE:
 		ac->store->controls = talloc_move(ac->store, &ares->controls);
-		talloc_free(ares);
+		ret = paged_results(ac);
+		return ldb_module_done(ac->req, ac->controls,
+					ares->response, ret);
 	}
 
 	return LDB_SUCCESS;
-
-error:
-	talloc_free(ares);
-	return LDB_ERR_OPERATIONS_ERROR;
 }
 
 static int paged_search(struct ldb_module *module, struct ldb_request *req)
@@ -232,8 +294,8 @@ static int paged_search(struct ldb_module *module, struct ldb_request *req)
 	struct private_data *private_data;
 	struct ldb_paged_control *paged_ctrl;
 	struct ldb_control **saved_controls;
+	struct ldb_request *search_req;
 	struct paged_context *ac;
-	struct ldb_handle *h;
 	int ret;
 
 	/* check if there's a paged request control */
@@ -243,65 +305,57 @@ static int paged_search(struct ldb_module *module, struct ldb_request *req)
 		return ldb_next_request(module, req);
 	}
 
-	private_data = talloc_get_type(module->private_data, struct private_data);
-
-	req->handle = NULL;
-
-	if (!req->callback || !req->context) {
-		ldb_set_errstring(module->ldb,
-				  "Async interface called with NULL callback function or NULL context");
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-	
 	paged_ctrl = talloc_get_type(control->data, struct ldb_paged_control);
 	if (!paged_ctrl) {
 		return LDB_ERR_PROTOCOL_ERROR;
 	}
 
-	h = init_handle(req, module, req->context, req->callback);
-	if (!h) {
+	private_data = talloc_get_type(module->private_data, struct private_data);
+
+	ac = talloc_zero(req, struct paged_context);
+	if (ac == NULL) {
+		ldb_set_errstring(module->ldb, "Out of Memory");
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
-	ac = talloc_get_type(h->private_data, struct paged_context);
 
+	ac->module = module;
+	ac->req = req;
 	ac->size = paged_ctrl->size;
 
 	/* check if it is a continuation search the store */
 	if (paged_ctrl->cookie_len == 0) {
-		
-		ac->store = new_store(private_data);
-		if (ac->store == NULL) {
-			talloc_free(h);
-			return LDB_ERR_UNWILLING_TO_PERFORM;
+		if (paged_ctrl->size == 0) {
+			return LDB_ERR_OPERATIONS_ERROR;
 		}
 
-		ac->store->req = talloc(ac->store, struct ldb_request);
-		if (!ac->store->req)
+		ac->store = new_store(private_data);
+		if (ac->store == NULL) {
 			return LDB_ERR_OPERATIONS_ERROR;
+		}
 
-		ac->store->req->operation = req->operation;
-		ac->store->req->op.search.base = req->op.search.base;
-		ac->store->req->op.search.scope = req->op.search.scope;
-		ac->store->req->op.search.tree = req->op.search.tree;
-		ac->store->req->op.search.attrs = req->op.search.attrs;
-		ac->store->req->controls = req->controls;
+		ret = ldb_build_search_req_ex(&search_req, module->ldb, ac,
+						req->op.search.base,
+						req->op.search.scope,
+						req->op.search.tree,
+						req->op.search.attrs,
+						req->controls,
+						ac,
+						paged_search_callback,
+						req);
 
 		/* save it locally and remove it from the list */
 		/* we do not need to replace them later as we
 		 * are keeping the original req intact */
-		if (!save_controls(control, ac->store->req, &saved_controls)) {
+		if (!save_controls(control, search_req, &saved_controls)) {
 			return LDB_ERR_OPERATIONS_ERROR;
 		}
 
-		ac->store->req->context = ac;
-		ac->store->req->callback = paged_search_callback;
-		ldb_set_timeout_from_prev_req(module->ldb, req, ac->store->req);
-
-		ret = ldb_next_request(module, ac->store->req);
+		return ldb_next_request(module, search_req);
 
 	} else {
 		struct results_store *current = NULL;
 
+		/* TODO: age out old outstanding requests */
 		for (current = private_data->store; current; current = current->next) {
 			if (strcmp(current->cookie, paged_ctrl->cookie) == 0) {
 				current->timestamp = time(NULL);
@@ -309,249 +363,52 @@ static int paged_search(struct ldb_module *module, struct ldb_request *req)
 			}
 		}
 		if (current == NULL) {
-			talloc_free(h);
 			return LDB_ERR_UNWILLING_TO_PERFORM;
 		}
 
 		ac->store = current;
-		ret = LDB_SUCCESS;
-	}
-
-	req->handle = h;
-
-	/* check if it is an abandon */
-	if (ac->size == 0) {
-		talloc_free(ac->store);
-		h->status = LDB_SUCCESS;
-		h->state = LDB_ASYNC_DONE;
-		return LDB_SUCCESS;
-	}
-
-	/* TODO: age out old outstanding requests */
-
-	return ret;
-
-}
-
-static int paged_results(struct ldb_handle *handle)
-{
-	struct paged_context *ac;
-	struct ldb_paged_control *paged;
-	struct ldb_reply *ares;
-	struct message_store *msg;
-	int i, num_ctrls, ret;
-
-	ac = talloc_get_type(handle->private_data, struct paged_context);
-
-	if (ac->store == NULL)
-		return LDB_ERR_OPERATIONS_ERROR;
 
-	while (ac->store->num_entries > 0 && ac->size > 0) {
-		msg = ac->store->first;
-		ret = ac->up_callback(ac->module->ldb, ac->up_context, msg->r);
-		if (ret != LDB_SUCCESS) {
-			handle->status = ret;
-			handle->state = LDB_ASYNC_DONE;
-			return ret;
+		/* check if it is an abandon */
+		if (ac->size == 0) {
+			return ldb_module_done(req, NULL, NULL,
+								LDB_SUCCESS);
 		}
 
-		ac->store->first = msg->next;
-		talloc_free(msg);
-		ac->store->num_entries--;
-		ac->size--;
-	}
-
-	handle->state = LDB_ASYNC_DONE;
-
-	while (ac->store->first_ref != NULL) {
-		msg = ac->store->first_ref;
-		ret = ac->up_callback(ac->module->ldb, ac->up_context, msg->r);
+		ret = paged_results(ac);
 		if (ret != LDB_SUCCESS) {
-			handle->status = ret;
-			handle->state = LDB_ASYNC_DONE;
-			return ret;
+			return ldb_module_done(req, NULL, NULL, ret);
 		}
-
-		ac->store->first_ref = msg->next;
-		talloc_free(msg);
-	}
-
-	ares = talloc_zero(ac->store, struct ldb_reply);
-	if (ares == NULL) {
-		handle->status = LDB_ERR_OPERATIONS_ERROR;
-		return handle->status;
-	}
-	num_ctrls = 2;
-	i = 0;
-
-	if (ac->store->controls != NULL) {
-		ares->controls = ac->store->controls;
-		while (ares->controls[i]) i++; /* counting */
-
-		ares->controls = talloc_move(ares, &ac->store->controls);
-		num_ctrls += i;
-	}
-
-	ares->controls = talloc_realloc(ares, ares->controls, struct ldb_control *, num_ctrls);
-	if (ares->controls == NULL) {
-		handle->status = LDB_ERR_OPERATIONS_ERROR;
-		return handle->status;
+		return ldb_module_done(req, ac->controls, NULL,
+								LDB_SUCCESS);
 	}
-
-	ares->controls[i] = talloc(ares->controls, struct ldb_control);
-	if (ares->controls[i] == NULL) {
-		handle->status = LDB_ERR_OPERATIONS_ERROR;
-		return handle->status;
-	}
-
-	ares->controls[i]->oid = talloc_strdup(ares->controls[i], LDB_CONTROL_PAGED_RESULTS_OID);
-	if (ares->controls[i]->oid == NULL) {
-		handle->status = LDB_ERR_OPERATIONS_ERROR;
-		return handle->status;
-	}
-		
-	ares->controls[i]->critical = 0;
-	ares->controls[i + 1] = NULL;
-
-	paged = talloc(ares->controls[i], struct ldb_paged_control);
-	if (paged == NULL) {
-		handle->status = LDB_ERR_OPERATIONS_ERROR;
-		return handle->status;
-	}
-	
-	ares->controls[i]->data = paged;
-
-	if (ac->size > 0) {
-		paged->size = 0;
-		paged->cookie = NULL;
-		paged->cookie_len = 0;
-	} else {
-		paged->size = ac->store->num_entries;
-		paged->cookie = talloc_strdup(paged, ac->store->cookie);
-		paged->cookie_len = strlen(paged->cookie) + 1;
-	}
-
-	ares->type = LDB_REPLY_DONE;
-
-	ret = ac->up_callback(ac->module->ldb, ac->up_context, ares);
-
-	handle->status = ret;
-
-	return ret;
-}
-
-static int paged_wait_once(struct ldb_handle *handle) {
-	struct paged_context *ac;
-	int ret;
-    
-	if (!handle || !handle->private_data) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	if (handle->state == LDB_ASYNC_DONE) {
-		return handle->status;
-	}
-
-	handle->state = LDB_ASYNC_PENDING;
-
-	ac = talloc_get_type(handle->private_data, struct paged_context);
-
-	if (ac->store->req->handle->state == LDB_ASYNC_DONE) {
-		/* if lower level is finished we do not need to call it anymore */
-		/* return all we have until size == 0 or we empty storage */
-		ret = paged_results(handle);
-
-		/* we are done, if num_entries is zero free the storage
-		 * as that mean we delivered the last batch */
-		if (ac->store->num_entries == 0) {
-			talloc_free(ac->store);
-		}
-
-		return ret;
-	}
-
-	ret = ldb_wait(ac->store->req->handle, LDB_WAIT_NONE);
-	if (ret != LDB_SUCCESS) {
-		handle->state = LDB_ASYNC_DONE;
-		handle->status = ret;
-		return ret;
-	}
-
-	handle->status = ret;
-
-	if (ac->store->num_entries >= ac->size ||
-	    ac->store->req->handle->state == LDB_ASYNC_DONE) {
-
-		ret = paged_results(handle);
-
-		/* we are done, if num_entries is zero free the storage
-		 * as that mean we delivered the last batch */
-		if (ac->store->num_entries == 0) {
-			talloc_free(ac->store);
-		}
-	}
-
-	return ret;
-}
-
-static int paged_wait(struct ldb_handle *handle, enum ldb_wait_type type)
-{
-	int ret;
- 
-	if (!handle || !handle->private_data) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	if (type == LDB_WAIT_ALL) {
-		while (handle->state != LDB_ASYNC_DONE) {
-			ret = paged_wait_once(handle);
-			if (ret != LDB_SUCCESS) {
-				return ret;
-			}
-		}
-
-		return handle->status;
-	}
-
-	return paged_wait_once(handle);
 }
 
 static int paged_request_init(struct ldb_module *module)
 {
 	struct private_data *data;
-	struct ldb_request *req;
 	int ret;
 
 	data = talloc(module, struct private_data);
 	if (data == NULL) {
 		return LDB_ERR_OTHER;
 	}
-	
+
 	data->next_free_id = 1;
 	data->store = NULL;
 	module->private_data = data;
 
-	req = talloc(module, struct ldb_request);
-	if (req == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	req->operation = LDB_REQ_REGISTER_CONTROL;
-	req->op.reg_control.oid = LDB_CONTROL_PAGED_RESULTS_OID;
-	req->controls = NULL;
-
-	ret = ldb_request(module->ldb, req);
+	ret = ldb_mod_register_control(module, LDB_CONTROL_PAGED_RESULTS_OID);
 	if (ret != LDB_SUCCESS) {
-		ldb_debug(module->ldb, LDB_DEBUG_WARNING, "paged_request: Unable to register control with rootdse!\n");
+		ldb_debug(module->ldb, LDB_DEBUG_WARNING,
+			"paged_request:"
+			"Unable to register control with rootdse!\n");
 	}
 
-	talloc_free(req);
 	return ldb_next_init(module);
 }
 
 const struct ldb_module_ops ldb_paged_results_module_ops = {
 	.name           = "paged_results",
 	.search         = paged_search,
-	.wait           = paged_wait,
 	.init_context 	= paged_request_init
 };
diff --git a/ldb/modules/paged_searches.c b/ldb/modules/paged_searches.c
index 40e87f70d..7a728e3bb 100644
--- a/ldb/modules/paged_searches.c
+++ b/ldb/modules/paged_searches.c
@@ -1,7 +1,7 @@
 /* 
    ldb database library
 
-   Copyright (C) Simo Sorce  2005-2006
+   Copyright (C) Simo Sorce  2005-2008
 
      ** NOTE! The following LGPL license applies to the ldb
      ** library. This does NOT imply that all of Samba is released
@@ -46,12 +46,7 @@ struct private_data {
 
 struct ps_context {
 	struct ldb_module *module;
-	void *up_context;
-	int (*up_callback)(struct ldb_context *, void *, struct ldb_reply *);
-
-	struct ldb_request *orig_req;
-
-	struct ldb_request *new_req;
+	struct ldb_request *req;
 
 	bool pending;
 
@@ -59,51 +54,13 @@ struct ps_context {
 	int num_referrals;
 };
 
-static struct ldb_handle *init_handle(void *mem_ctx, struct ldb_module *module,
-					    void *context,
-					    int (*callback)(struct ldb_context *, void *, struct ldb_reply *))
+static int check_ps_continuation(struct ldb_request *req, struct ldb_reply *ares)
 {
 	struct ps_context *ac;
-	struct ldb_handle *h;
-
-	h = talloc_zero(mem_ctx, struct ldb_handle);
-	if (h == NULL) {
-		ldb_set_errstring(module->ldb, "Out of Memory");
-		return NULL;
-	}
-
-	h->module = module;
-
-	ac = talloc_zero(h, struct ps_context);
-	if (ac == NULL) {
-		ldb_set_errstring(module->ldb, "Out of Memory");
-		talloc_free(h);
-		return NULL;
-	}
-
-	h->private_data = (void *)ac;
-
-	h->state = LDB_ASYNC_INIT;
-	h->status = LDB_SUCCESS;
-
-	ac->module = module;
-	ac->up_context = context;
-	ac->up_callback = callback;
-
-	ac->pending = false;
-
-
-
-	ac->saved_referrals = NULL;
-	ac->num_referrals = 0;
-
-	return h;
-}
-
-static int check_ps_continuation(struct ldb_reply *ares, struct ps_context *ac)
-{
 	struct ldb_paged_control *rep_control, *req_control;
 
+	ac = talloc_get_type(req->context, struct ps_context);
+
 	/* look up our paged control */
 	if (!ares->controls || strcmp(LDB_CONTROL_PAGED_RESULTS_OID, ares->controls[0]->oid) != 0) {
 		/* something wrong here */
@@ -122,12 +79,12 @@ static int check_ps_continuation(struct ldb_reply *ares, struct ps_context *ac)
 	/* if there's a reply control we must find a request
 	 * control matching it */
 
-	if (strcmp(LDB_CONTROL_PAGED_RESULTS_OID, ac->new_req->controls[0]->oid) != 0) {
+	if (strcmp(LDB_CONTROL_PAGED_RESULTS_OID, req->controls[0]->oid) != 0) {
 		/* something wrong here */
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
 
-	req_control = talloc_get_type(ac->new_req->controls[0]->data, struct ldb_paged_control);
+	req_control = talloc_get_type(req->controls[0]->data, struct ldb_paged_control);
 
 	if (req_control->cookie) {
 		talloc_free(req_control->cookie);
@@ -142,7 +99,7 @@ static int check_ps_continuation(struct ldb_reply *ares, struct ps_context *ac)
 	return LDB_SUCCESS;
 }
 
-static int store_referral(char *referral, struct ps_context *ac)
+static int store_referral(struct ps_context *ac, char *referral)
 {
 	ac->saved_referrals = talloc_realloc(ac, ac->saved_referrals, char *, ac->num_referrals + 2);
 	if (!ac->saved_referrals) {
@@ -160,13 +117,14 @@ static int store_referral(char *referral, struct ps_context *ac)
 	return LDB_SUCCESS;
 }
 
-static int send_referrals(struct ldb_context *ldb, struct ps_context *ac)
+static int send_referrals(struct ps_context *ac)
 {
 	struct ldb_reply *ares;
+	int ret;
 	int i;
 
 	for (i = 0; i < ac->num_referrals; i++) {
-		ares = talloc_zero(ac, struct ldb_reply);
+		ares = talloc_zero(ac->req, struct ldb_reply);
 		if (!ares) {
 			return LDB_ERR_OPERATIONS_ERROR;
 		}
@@ -174,69 +132,87 @@ static int send_referrals(struct ldb_context *ldb, struct ps_context *ac)
 		ares->type = LDB_REPLY_REFERRAL;
 		ares->referral = ac->saved_referrals[i];
 
-		ac->up_callback(ldb, ac->up_context, ares);
+		ret = ldb_module_send_referral(ac->req, ares->referral);
+		if (ret != LDB_SUCCESS) {
+			return ret;
+		}
 	}
 
 	return LDB_SUCCESS;
 }
 
-static int ps_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares)
+static int ps_next_request(struct ps_context *ac);
+
+static int ps_callback(struct ldb_request *req, struct ldb_reply *ares)
 {
-	struct ps_context *ac = NULL;
-	int ret = LDB_ERR_OPERATIONS_ERROR;
+	struct ps_context *ac;
+	int ret;
 
-	if (!context || !ares) {
-		ldb_set_errstring(ldb, "NULL Context or Result in callback");
-		goto error;
-	}
+	ac = talloc_get_type(req->context, struct ps_context);
 
-	ac = talloc_get_type(context, struct ps_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:
-		ac->up_callback(ldb, ac->up_context, ares);
+		ret = ldb_module_send_entry(ac->req, ares->message);
+		if (ret != LDB_SUCCESS) {
+			return ldb_module_done(ac->req, NULL, NULL, ret);
+		}
 		break;
 
 	case LDB_REPLY_REFERRAL:
-		ret = store_referral(ares->referral, ac);
+		ret = store_referral(ac, ares->referral);
 		if (ret != LDB_SUCCESS) {
-			goto error;
+			return ldb_module_done(ac->req, NULL, NULL, ret);
 		}
 		break;
 
 	case LDB_REPLY_DONE:
-		ret = check_ps_continuation(ares, ac);
+
+		ret = check_ps_continuation(req, ares);
 		if (ret != LDB_SUCCESS) {
-			goto error;
+			return ldb_module_done(ac->req, NULL, NULL, ret);
 		}
-		if (!ac->pending) {
+
+		if (ac->pending) {
+
+			ret = ps_next_request(ac);
+			if (ret != LDB_SUCCESS) {
+				return ldb_module_done(ac->req,
+							NULL, NULL, ret);
+			}
+
+		} else {
+
 			/* send referrals */
-			ret = send_referrals(ldb, ac);
+			ret = send_referrals(ac);
 			if (ret != LDB_SUCCESS) {
-				goto error;
+				return ldb_module_done(ac->req,
+							NULL, NULL, ret);
 			}
 
 			/* send REPLY_DONE */
-			ac->up_callback(ldb, ac->up_context, ares);
+			return ldb_module_done(ac->req, ares->controls,
+						ares->response, LDB_SUCCESS);
 		}
 		break;
-	default:
-		goto error;
 	}
 
-	return LDB_SUCCESS;
-
-error:
 	talloc_free(ares);
-	return ret;
+	return LDB_SUCCESS;
 }
 
 static int ps_search(struct ldb_module *module, struct ldb_request *req)
 {
 	struct private_data *private_data;
-	struct ldb_paged_control *control;
 	struct ps_context *ac;
-	struct ldb_handle *h;
 
 	private_data = talloc_get_type(module->private_data, struct private_data);
 
@@ -248,216 +224,151 @@ static int ps_search(struct ldb_module *module, struct ldb_request *req)
 		return ldb_next_request(module, req);
 	}
 
-	if (!req->callback || !req->context) {
-		ldb_set_errstring(module->ldb,
-				  "Async interface called with NULL callback function or NULL context");
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-	
-	h = init_handle(req, module, req->context, req->callback);
-	if (!h) {
+	ac = talloc_zero(req, struct ps_context);
+	if (ac == NULL) {
+		ldb_oom(module->ldb);
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
-	ac = talloc_get_type(h->private_data, struct ps_context);
-
-	ac->new_req = talloc(ac, struct ldb_request);
-	if (!ac->new_req) return LDB_ERR_OPERATIONS_ERROR;
-
-	ac->new_req->controls = talloc_array(ac->new_req, struct ldb_control *, 2);
-	if (!ac->new_req->controls) return LDB_ERR_OPERATIONS_ERROR;
-
-	ac->new_req->controls[0] = talloc(ac->new_req->controls, struct ldb_control);
-	if (!ac->new_req->controls[0]) return LDB_ERR_OPERATIONS_ERROR;
-
-	control = talloc(ac->new_req->controls[0], struct ldb_paged_control);
-	if (!control) return LDB_ERR_OPERATIONS_ERROR;
-
-	control->size = PS_DEFAULT_PAGE_SIZE;
-	control->cookie = NULL;
-	control->cookie_len = 0;
-
-	ac->new_req->controls[0]->oid = LDB_CONTROL_PAGED_RESULTS_OID;
-	ac->new_req->controls[0]->critical = 1;
-	ac->new_req->controls[0]->data = control;
-
-	ac->new_req->controls[1] = NULL;
 
-	ac->new_req->operation = req->operation;
-	ac->new_req->op.search.base = req->op.search.base;
-	ac->new_req->op.search.scope = req->op.search.scope;
-	ac->new_req->op.search.tree = req->op.search.tree;
-	ac->new_req->op.search.attrs = req->op.search.attrs;
-	ac->new_req->context = ac;
-	ac->new_req->callback = ps_callback;
-	ldb_set_timeout_from_prev_req(module->ldb, req, ac->new_req);
-
-	req->handle = h;
+	ac->module = module;
+	ac->req = req;
+	ac->pending = false;
+	ac->saved_referrals = NULL;
+	ac->num_referrals = 0;
 
-	return ldb_next_request(module, ac->new_req);
+	return ps_next_request(ac);
 }
 
-static int ps_continuation(struct ldb_handle *handle)
-{
-	struct ps_context *ac;
+static int ps_next_request(struct ps_context *ac) {
 
-	if (!handle || !handle->private_data) {
+	struct ldb_paged_control *control;
+	struct ldb_control **controls;
+	struct ldb_request *new_req;
+	int ret;
+
+	controls = talloc_array(ac, struct ldb_control *, 2);
+	if (!controls) {
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
 
-	ac = talloc_get_type(handle->private_data, struct ps_context);
-
-	/* reset the requests handle */
-	ac->new_req->handle = NULL;
-
-	return ldb_next_request(handle->module, ac->new_req);
-}
-
-static int ps_wait_once(struct ldb_handle *handle)
-{
-	struct ps_context *ac;
-	int ret;
-    
-	if (!handle || !handle->private_data) {
+	controls[0] = talloc(controls, struct ldb_control);
+	if (!controls[0]) {
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
 
-	if (handle->state == LDB_ASYNC_DONE) {
-		return handle->status;
+	control = talloc(controls[0], struct ldb_paged_control);
+	if (!control) {
+		return LDB_ERR_OPERATIONS_ERROR;
 	}
 
-	handle->state = LDB_ASYNC_PENDING;
-	handle->status = LDB_SUCCESS;
-
-	ac = talloc_get_type(handle->private_data, struct ps_context);
-
-	ret = ldb_wait(ac->new_req->handle, LDB_WAIT_NONE);
+	control->size = PS_DEFAULT_PAGE_SIZE;
+	control->cookie = NULL;
+	control->cookie_len = 0;
 
+	controls[0]->oid = LDB_CONTROL_PAGED_RESULTS_OID;
+	controls[0]->critical = 1;
+	controls[0]->data = control;
+	controls[1] = NULL;
+
+	ret = ldb_build_search_req_ex(&new_req, ac->module->ldb, ac,
+					ac->req->op.search.base,
+					ac->req->op.search.scope,
+					ac->req->op.search.tree,
+					ac->req->op.search.attrs,
+					controls,
+					ac,
+					ps_callback,
+					ac->req);
 	if (ret != LDB_SUCCESS) {
-		handle->status = ret;
-		goto done;
-	}
-
-	if (ac->new_req->handle->status != LDB_SUCCESS) {
-		handle->status = ac->new_req->handle->status;
-		goto done;
-	}
-
-	if (ac->new_req->handle->state != LDB_ASYNC_DONE) {
-		return LDB_SUCCESS;
-	} 
-
-	/* see if we need to send another request for the next batch */
-	if (ac->pending) {
-		ret = ps_continuation(handle);
-		if (ret != LDB_SUCCESS) {
-			handle->status = ret;
-			goto done;
-		}
-
-		/* continue the search with the next request */
-		return LDB_SUCCESS;
+		return ret;
 	}
+	talloc_steal(new_req, controls);
 
-	ret = LDB_SUCCESS;
-
-done:
-	handle->state = LDB_ASYNC_DONE;
-	return ret;
+	return ldb_next_request(ac->module, new_req);
 }
 
-static int ps_wait(struct ldb_handle *handle, enum ldb_wait_type type)
+static int check_supported_paged(struct ldb_request *req,
+				 struct ldb_reply *ares)
 {
-	int ret;
-
-	if (!handle || !handle->private_data) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
+	struct private_data *data;
 
-	if (type == LDB_WAIT_ALL) {
-		while (handle->state != LDB_ASYNC_DONE) {
-			ret = ps_wait_once(handle);
-			if (ret != LDB_SUCCESS) {
-				return ret;
-			}
-		}
+	data = talloc_get_type(req->context, struct private_data);
 
-		return handle->status;
+	if (!ares) {
+		return ldb_request_done(req, LDB_ERR_OPERATIONS_ERROR);
+	}
+	if (ares->error != LDB_SUCCESS) {
+		return ldb_request_done(req, LDB_ERR_OPERATIONS_ERROR);
 	}
-	return ps_wait_once(handle);
-}
 
-static int check_supported_paged(struct ldb_context *ldb, void *context, 
-				 struct ldb_reply *ares) 
-{
-	struct private_data *data;
-	data = talloc_get_type(context,
-			       struct private_data);
-	if (ares->type == LDB_REPLY_ENTRY) {
+	switch (ares->type) {
+	case LDB_REPLY_ENTRY:
 		if (ldb_msg_check_string_attribute(ares->message,
 						   "supportedControl",
 						   LDB_CONTROL_PAGED_RESULTS_OID)) {
 			data->paged_supported = true;
 		}
+		break;
+
+	case LDB_REPLY_REFERRAL:
+		/* ignore */
+		break;
+
+	case LDB_REPLY_DONE:
+		return ldb_request_done(req, LDB_SUCCESS);
 	}
+
+	talloc_free(ares);
 	return LDB_SUCCESS;
 }
 
-
 static int ps_init(struct ldb_module *module)
 {
 	static const char *attrs[] = { "supportedControl", NULL };
 	struct private_data *data;
+	struct ldb_dn *base;
 	int ret;
 	struct ldb_request *req;
 
 	data = talloc(module, struct private_data);
 	if (data == NULL) {
-		ldb_set_errstring(module->ldb, "Out of Memory");
-		return LDB_ERR_OTHER;
+		ldb_oom(module->ldb);
+		return LDB_ERR_OPERATIONS_ERROR;
 	}
 	module->private_data = data;
 	data->paged_supported = false;
 
-	req = talloc(module, struct ldb_request);
-	if (req == NULL) {
-		ldb_set_errstring(module->ldb, "Out of Memory");
+	base = ldb_dn_new(module, module->ldb, "");
+	if (base == NULL) {
+		ldb_oom(module->ldb);
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
-
-	req->operation = LDB_SEARCH;
-	req->op.search.base = ldb_dn_new(req, module->ldb, "");
-	req->op.search.scope = LDB_SCOPE_BASE;
-
-	req->op.search.tree = ldb_parse_tree(req, "objectClass=*");
-	if (req->op.search.tree == NULL) {
-		ldb_set_errstring(module->ldb, "Unable to parse search expression");
-		talloc_free(req);
-		return LDB_ERR_OPERATIONS_ERROR;
+	ret = ldb_build_search_req(&req, module->ldb, module,
+				   base, LDB_SCOPE_BASE,
+				   "(objectClass=*)",
+				   attrs, NULL,
+				   data, check_supported_paged,
+				   NULL);
+	if (ret != LDB_SUCCESS) {
+		return ret;
 	}
 
-	req->op.search.attrs = attrs;
-	req->controls = NULL;
-	req->context = data;
-	req->callback = check_supported_paged;
-	ldb_set_timeout(module->ldb, req, 0); /* use default timeout */
-
 	ret = ldb_next_request(module, req);
-	
 	if (ret == LDB_SUCCESS) {
 		ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 	}
-	
-	talloc_free(req);
 	if (ret != LDB_SUCCESS) {
 		return ret;
 	}
 
+	talloc_free(base);
+	talloc_free(req);
+
 	return ldb_next_init(module);
 }
 
 _PUBLIC_ const struct ldb_module_ops ldb_paged_searches_module_ops = {
 	.name           = "paged_searches",
 	.search         = ps_search,
-	.wait           = ps_wait,
 	.init_context 	= ps_init
 };
diff --git a/ldb/modules/rdn_name.c b/ldb/modules/rdn_name.c
index 65c044c0f..62b8ce511 100644
--- a/ldb/modules/rdn_name.c
+++ b/ldb/modules/rdn_name.c
@@ -2,7 +2,7 @@
    ldb database library
 
    Copyright (C) Andrew Bartlet 2005
-   Copyright (C) Simo Sorce     2006
+   Copyright (C) Simo Sorce     2006-2008
 
      ** NOTE! The following LGPL license applies to the ldb
      ** library. This does NOT imply that all of Samba is released
@@ -38,6 +38,14 @@
 
 #include "ldb_includes.h"
 
+struct rename_context {
+
+	struct ldb_module *module;
+	struct ldb_request *req;
+
+	struct ldb_reply *ares;
+};
+
 static struct ldb_message_element *rdn_name_find_attribute(const struct ldb_message *msg, const char *name)
 {
 	int i;
@@ -51,11 +59,38 @@ static struct ldb_message_element *rdn_name_find_attribute(const struct ldb_mess
 	return NULL;
 }
 
+static int rdn_name_add_callback(struct ldb_request *req,
+				 struct ldb_reply *ares)
+{
+	struct rename_context *ac;
+
+	ac = talloc_get_type(req->context, struct 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);
+	}
+
+	if (ares->type != LDB_REPLY_DONE) {
+		return ldb_module_done(ac->req, NULL, NULL,
+					LDB_ERR_OPERATIONS_ERROR);
+	}
+
+	return ldb_module_done(ac->req, ares->controls,
+					ares->response, LDB_SUCCESS);
+}
+
 static int rdn_name_add(struct ldb_module *module, struct ldb_request *req)
 {
 	struct ldb_request *down_req;
+	struct rename_context *ac;
 	struct ldb_message *msg;
 	struct ldb_message_element *attribute;
+	const struct ldb_schema_attribute *a;
 	const char *rdn_name;
 	struct ldb_val rdn_val;
 	int i, ret;
@@ -67,21 +102,22 @@ static int rdn_name_add(struct ldb_module *module, struct ldb_request *req)
 		return ldb_next_request(module, req);
 	}
 
-	down_req = talloc(req, struct ldb_request);
-	if (down_req == NULL) {
+	ac = talloc_zero(req, struct rename_context);
+	if (ac == NULL) {
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
 
-	*down_req = *req;
+	ac->module = module;
+	ac->req = req;
 
-	down_req->op.add.message = msg = ldb_msg_copy_shallow(down_req, req->op.add.message);
+	msg = ldb_msg_copy_shallow(req, req->op.add.message);
 	if (msg == NULL) {
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
 
 	rdn_name = ldb_dn_get_rdn_name(msg->dn);
 	if (rdn_name == NULL) {
-		talloc_free(down_req);
+		talloc_free(ac);
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
 	
@@ -93,7 +129,7 @@ static int rdn_name_add(struct ldb_module *module, struct ldb_request *req)
 	}
 
 	if (ldb_msg_add_value(msg, "name", &rdn_val, NULL) != 0) {
-		talloc_free(down_req);
+		talloc_free(ac);
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
 
@@ -101,14 +137,16 @@ static int rdn_name_add(struct ldb_module *module, struct ldb_request *req)
 
 	if (!attribute) {
 		if (ldb_msg_add_value(msg, rdn_name, &rdn_val, NULL) != 0) {
-			talloc_free(down_req);
+			talloc_free(ac);
 			return LDB_ERR_OPERATIONS_ERROR;
 		}
 	} else {
-		const struct ldb_schema_attribute *a = ldb_schema_attribute_by_name(module->ldb, rdn_name);
+		a = ldb_schema_attribute_by_name(module->ldb, rdn_name);
 
 		for (i = 0; i < attribute->num_values; i++) {
-			if (a->syntax->comparison_fn(module->ldb, msg, &rdn_val, &attribute->values[i]) == 0) {
+			ret = a->syntax->comparison_fn(module->ldb, msg,
+					&rdn_val, &attribute->values[i]);
+			if (ret == 0) {
 				/* overwrite so it matches in case */
 				attribute->values[i] = rdn_val;
 				break;
@@ -118,218 +156,166 @@ static int rdn_name_add(struct ldb_module *module, struct ldb_request *req)
 			ldb_debug_set(module->ldb, LDB_DEBUG_FATAL, 
 				      "RDN mismatch on %s: %s (%s)", 
 				      ldb_dn_get_linearized(msg->dn), rdn_name, rdn_val.data);
-			talloc_free(down_req);
+			talloc_free(ac);
 			/* Match AD's error here */
 			return LDB_ERR_INVALID_DN_SYNTAX;
 		}
 	}
 
-	/* go on with the call chain */
-	ret = ldb_next_request(module, down_req);
-
-	/* do not free down_req as the call results may be linked to it,
-	 * it will be freed when the upper level request get freed */
-	if (ret == LDB_SUCCESS) {
-		req->handle = down_req->handle;
+	ret = ldb_build_add_req(&down_req, module->ldb, req,
+				msg,
+				req->controls,
+				ac, rdn_name_add_callback,
+				req);
+	if (ret != LDB_SUCCESS) {
+		return ret;
 	}
 
-	return ret;
-}
-
-struct rename_context {
+	talloc_steal(down_req, msg);
 
-	enum {RENAME_RENAME, RENAME_MODIFY} step;
-	struct ldb_request *orig_req;
-	struct ldb_request *down_req;
-	struct ldb_request *mod_req;
-};
+	/* go on with the call chain */
+	return ldb_next_request(module, down_req);
+}
 
-static int rdn_name_rename(struct ldb_module *module, struct ldb_request *req)
+static int rdn_modify_callback(struct ldb_request *req, struct ldb_reply *ares)
 {
-	struct ldb_handle *h;
 	struct rename_context *ac;
 
-	ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_rename\n");
+	ac = talloc_get_type(req->context, struct rename_context);
 
-	/* do not manipulate our control entries */
-	if (ldb_dn_is_special(req->op.rename.newdn)) {
-		return ldb_next_request(module, req);
+	if (!ares) {
+		return ldb_module_done(ac->req, NULL, NULL,
+					LDB_ERR_OPERATIONS_ERROR);
 	}
-
-	h = talloc_zero(req, struct ldb_handle);
-	if (h == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
+	if (ares->error != LDB_SUCCESS) {
+		return ldb_module_done(ac->req, ares->controls,
+					ares->response, ares->error);
 	}
 
-	h->module = module;
-
-	ac = talloc_zero(h, struct rename_context);
-	if (ac == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
+	/* the only supported reply right now is a LDB_REPLY_DONE */
+	if (ares->type != LDB_REPLY_DONE) {
+		return ldb_module_done(ac->req, NULL, NULL,
+					LDB_ERR_OPERATIONS_ERROR);
 	}
 
-	h->private_data = (void *)ac;
-
-	h->state = LDB_ASYNC_INIT;
-	h->status = LDB_SUCCESS;
-
-	ac->orig_req = req;
-	ac->down_req = talloc(req, struct ldb_request);
-	if (ac->down_req == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	*(ac->down_req) = *req;
-
-	ac->step = RENAME_RENAME;
-
-	req->handle = h;
-
-	/* rename first, modify "name" if rename is ok */
-	return ldb_next_request(module, ac->down_req);
+	/* send saved controls eventually */
+	return ldb_module_done(ac->req, ac->ares->controls,
+				ac->ares->response, LDB_SUCCESS);
 }
 
-static int rdn_name_rename_do_mod(struct ldb_handle *h) {
-
+static int rdn_rename_callback(struct ldb_request *req, struct ldb_reply *ares)
+{
 	struct rename_context *ac;
+	struct ldb_request *mod_req;
 	const char *rdn_name;
 	struct ldb_val rdn_val;
 	struct ldb_message *msg;
+	int ret;
 
-	ac = talloc_get_type(h->private_data, struct rename_context);
+	ac = talloc_get_type(req->context, struct rename_context);
 
-	ac->mod_req = talloc_zero(ac, struct ldb_request);
+	if (!ares) {
+		goto error;
+	}
+	if (ares->error != LDB_SUCCESS) {
+		return ldb_module_done(ac->req, ares->controls,
+					ares->response, ares->error);
+	}
 
-	ac->mod_req->operation = LDB_MODIFY;
-	ac->mod_req->op.mod.message = msg = ldb_msg_new(ac->mod_req);
-	if (msg == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
+	/* the only supported reply right now is a LDB_REPLY_DONE */
+	if (ares->type != LDB_REPLY_DONE) {
+		goto error;
 	}
 
-	msg->dn = ldb_dn_copy(msg, ac->orig_req->op.rename.newdn);
+	/* save reply for caller */
+	ac->ares = talloc_steal(ac, ares);
+
+	msg = ldb_msg_new(ac);
+	if (msg == NULL) {
+		goto error;
+	}
+	msg->dn = ldb_dn_copy(msg, ac->req->op.rename.newdn);
 	if (msg->dn == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
+		goto error;
 	}
-
-	rdn_name = ldb_dn_get_rdn_name(ac->orig_req->op.rename.newdn);
+	rdn_name = ldb_dn_get_rdn_name(ac->req->op.rename.newdn);
 	if (rdn_name == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
+		goto error;
 	}
 	
-	rdn_val = ldb_val_dup(msg, ldb_dn_get_rdn_val(ac->orig_req->op.rename.newdn));
+	rdn_val = ldb_val_dup(msg, ldb_dn_get_rdn_val(ac->req->op.rename.newdn));
 	
 	if (ldb_msg_add_empty(msg, rdn_name, LDB_FLAG_MOD_REPLACE, NULL) != 0) {
-		return LDB_ERR_OPERATIONS_ERROR;
+		goto error;
 	}
 	if (ldb_msg_add_value(msg, rdn_name, &rdn_val, NULL) != 0) {
-		return LDB_ERR_OPERATIONS_ERROR;
+		goto error;
 	}
 	if (ldb_msg_add_empty(msg, "name", LDB_FLAG_MOD_REPLACE, NULL) != 0) {
-		return LDB_ERR_OPERATIONS_ERROR;
+		goto error;
 	}
 	if (ldb_msg_add_value(msg, "name", &rdn_val, NULL) != 0) {
-		return LDB_ERR_OPERATIONS_ERROR;
+		goto error;
 	}
 
-	ldb_set_timeout_from_prev_req(h->module->ldb, ac->orig_req, ac->mod_req);
-
-	ac->step = RENAME_MODIFY;
+	ret = ldb_build_mod_req(&mod_req, ac->module->ldb,
+				ac, msg, NULL,
+				ac, rdn_modify_callback,
+				req);
+	if (ret != LDB_SUCCESS) {
+		return ldb_module_done(ac->req, NULL, NULL, ret);
+	}
+	talloc_steal(mod_req, msg);
 
 	/* do the mod call */
-	return ldb_request(h->module->ldb, ac->mod_req);
+	return ldb_request(ac->module->ldb, mod_req);
+
+error:
+	return ldb_module_done(ac->req, NULL, NULL,
+						LDB_ERR_OPERATIONS_ERROR);
 }
 
-static int rdn_name_wait_once(struct ldb_handle *handle)
+static int rdn_name_rename(struct ldb_module *module, struct ldb_request *req)
 {
 	struct rename_context *ac;
+	struct ldb_request *down_req;
 	int ret;
-    
-	if (!handle || !handle->private_data) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	if (handle->state == LDB_ASYNC_DONE) {
-		return handle->status;
-	}
 
-	handle->state = LDB_ASYNC_PENDING;
-	handle->status = LDB_SUCCESS;
-
-	ac = talloc_get_type(handle->private_data, struct rename_context);
-
-	switch(ac->step) {
-	case RENAME_RENAME:
-		ret = ldb_wait(ac->down_req->handle, LDB_WAIT_NONE);
-		if (ret != LDB_SUCCESS) {
-			handle->status = ret;
-			goto done;
-		}
-		if (ac->down_req->handle->status != LDB_SUCCESS) {
-			handle->status = ac->down_req->handle->status;
-			goto done;
-		}
-
-		if (ac->down_req->handle->state != LDB_ASYNC_DONE) {
-			return LDB_SUCCESS;
-		}
-
-		/* rename operation done */
-		return rdn_name_rename_do_mod(handle);
-
-	case RENAME_MODIFY:
-		ret = ldb_wait(ac->mod_req->handle, LDB_WAIT_NONE);
-		if (ret != LDB_SUCCESS) {
-			handle->status = ret;
-			goto done;
-		}
-		if (ac->mod_req->handle->status != LDB_SUCCESS) {
-			handle->status = ac->mod_req->handle->status;
-			goto done;
-		}
-
-		if (ac->mod_req->handle->state != LDB_ASYNC_DONE) {
-			return LDB_SUCCESS;
-		}
-
-		break;
+	ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_rename\n");
 
-	default:
-		ret = LDB_ERR_OPERATIONS_ERROR;
-		goto done;
+	/* do not manipulate our control entries */
+	if (ldb_dn_is_special(req->op.rename.newdn)) {
+		return ldb_next_request(module, req);
 	}
 
-	ret = LDB_SUCCESS;
-
-done:
-	handle->state = LDB_ASYNC_DONE;
-	return ret;
-}
-
-static int rdn_name_wait(struct ldb_handle *handle, enum ldb_wait_type type)
-{
-	int ret;
- 
-	if (!handle || !handle->private_data) {
+	ac = talloc_zero(req, struct rename_context);
+	if (ac == NULL) {
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
 
-	if (type == LDB_WAIT_ALL) {
-		while (handle->state != LDB_ASYNC_DONE) {
-			ret = rdn_name_wait_once(handle);
-			if (ret != LDB_SUCCESS) {
-				return ret;
-			}
-		}
+	ac->module = module;
+	ac->req = req;
 
-		return handle->status;
+	ret = ldb_build_rename_req(&down_req,
+				   module->ldb,
+				   ac,
+				   req->op.rename.olddn,
+				   req->op.rename.newdn,
+				   req->controls,
+				   ac,
+				   rdn_rename_callback,
+				   req);
+
+	if (ret != LDB_SUCCESS) {
+		return LDB_ERR_OPERATIONS_ERROR;
 	}
 
-	return rdn_name_wait_once(handle);
+	/* rename first, modify "name" if rename is ok */
+	return ldb_next_request(module, down_req);
 }
 
 const struct ldb_module_ops ldb_rdn_name_module_ops = {
 	.name              = "rdn_name",
 	.add               = rdn_name_add,
 	.rename            = rdn_name_rename,
-	.wait              = rdn_name_wait
 };
diff --git a/ldb/modules/sort.c b/ldb/modules/sort.c
index 746befa55..64d60f370 100644
--- a/ldb/modules/sort.c
+++ b/ldb/modules/sort.c
@@ -1,7 +1,7 @@
 /* 
    ldb database library
 
-   Copyright (C) Simo Sorce  2005
+   Copyright (C) Simo Sorce  2005-2008
 
      ** NOTE! The following LGPL license applies to the ldb
      ** library. This does NOT imply that all of Samba is released
@@ -43,8 +43,6 @@ struct opaque {
 
 struct sort_context {
 	struct ldb_module *module;
-	void *up_context;
-	int (*up_callback)(struct ldb_context *, void *, struct ldb_reply *);
 
 	char *attributeName;
 	char *orderingRule;
@@ -53,7 +51,6 @@ struct sort_context {
 	struct ldb_request *req;
 	struct ldb_message **msgs;
 	char **referrals;
-	struct ldb_control **controls;
 	int num_msgs;
 	int num_refs;
 
@@ -61,40 +58,6 @@ struct sort_context {
 	int sort_result;
 };
 
-static struct ldb_handle *init_handle(void *mem_ctx, struct ldb_module *module,
-					    void *context,
-					    int (*callback)(struct ldb_context *, void *, struct ldb_reply *))
-{
-	struct sort_context *ac;
-	struct ldb_handle *h;
-
-	h = talloc_zero(mem_ctx, struct ldb_handle);
-	if (h == NULL) {
-		ldb_set_errstring(module->ldb, "Out of Memory");
-		return NULL;
-	}
-
-	h->module = module;
-
-	ac = talloc_zero(h, struct sort_context);
-	if (ac == NULL) {
-		ldb_set_errstring(module->ldb, "Out of Memory");
-		talloc_free(h);
-		return NULL;
-	}
-
-	h->private_data = (void *)ac;
-
-	h->state = LDB_ASYNC_INIT;
-	h->status = LDB_SUCCESS;
-
-	ac->module = module;
-	ac->up_context = context;
-	ac->up_callback = callback;
-
-	return h;
-}
-
 static int build_response(void *mem_ctx, struct ldb_control ***ctrls, int result, const char *desc)
 {
 	struct ldb_control **controls;
@@ -142,7 +105,7 @@ static int sort_compare(struct ldb_message **msg1, struct ldb_message **msg2, vo
 	struct sort_context *ac = talloc_get_type(opaque, struct sort_context);
 	struct ldb_message_element *el1, *el2;
 
-	if (ac->sort_result != 0) {
+	if (!ac || ac->sort_result != 0) {
 		/* an error occurred previously,
 		 * let's exit the sorting by returning always 0 */
 		return 0;
@@ -154,7 +117,7 @@ static int sort_compare(struct ldb_message **msg1, struct ldb_message **msg2, vo
 	if (!el1 || !el2) {
 		/* the attribute was not found return and
 		 * set an error */
-		ac->sort_result = 53;
+		ac->sort_result = LDB_ERR_UNWILLING_TO_PERFORM;
 		return 0;
 	}
 
@@ -164,51 +127,111 @@ static int sort_compare(struct ldb_message **msg1, struct ldb_message **msg2, vo
 	return ac->a->syntax->comparison_fn(ac->module->ldb, ac, &el1->values[0], &el2->values[0]);
 }
 
-static int server_sort_search_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares)
+static int server_sort_results(struct sort_context *ac)
 {
-	struct sort_context *ac = NULL;
-	
- 	if (!context || !ares) {
-		ldb_set_errstring(ldb, "NULL Context or Result in callback");
-		goto error;
-	}	
+	struct ldb_reply *ares;
+	int i, ret;
+
+	ac->a = ldb_schema_attribute_by_name(ac->module->ldb, ac->attributeName);
+	ac->sort_result = 0;
+
+	ldb_qsort(ac->msgs, ac->num_msgs,
+		  sizeof(struct ldb_message *),
+		  ac, (ldb_qsort_cmp_fn_t)sort_compare);
+
+	if (ac->sort_result != LDB_SUCCESS) {
+		return ac->sort_result;
+	}
+
+	for (i = 0; i < ac->num_msgs; i++) {
+		ares = talloc_zero(ac, struct ldb_reply);
+		if (!ares) {
+			return LDB_ERR_OPERATIONS_ERROR;
+		}
+
+		ares->type = LDB_REPLY_ENTRY;
+		ares->message = talloc_move(ares, &ac->msgs[i]);
+
+		ret = ldb_module_send_entry(ac->req, ares->message);
+		if (ret != LDB_SUCCESS) {
+			return ret;
+		}
+	}
+
+	for (i = 0; i < ac->num_refs; i++) {
+		ares = talloc_zero(ac, struct ldb_reply);
+		if (!ares) {
+			return LDB_ERR_OPERATIONS_ERROR;
+		}
+
+		ares->type = LDB_REPLY_REFERRAL;
+		ares->referral = talloc_move(ares, &ac->referrals[i]);
+
+		ret = ldb_module_send_referral(ac->req, ares->referral);
+		if (ret != LDB_SUCCESS) {
+			return ret;
+		}
+	}
+
+	return LDB_SUCCESS;
+}
+
+static int server_sort_search_callback(struct ldb_request *req, struct ldb_reply *ares)
+{
+	struct sort_context *ac;
+	int ret;
 
-       	ac = talloc_get_type(context, struct sort_context);
+	ac = talloc_get_type(req->context, struct sort_context);
 
-	if (ares->type == LDB_REPLY_ENTRY) {
+	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:
 		ac->msgs = talloc_realloc(ac, ac->msgs, struct ldb_message *, ac->num_msgs + 2);
 		if (! ac->msgs) {
-			goto error;
+			talloc_free(ares);
+			ldb_oom(ac->module->ldb);
+			return ldb_module_done(ac->req, NULL, NULL,
+						LDB_ERR_OPERATIONS_ERROR);
 		}
 
-		ac->msgs[ac->num_msgs + 1] = NULL;
-
-		ac->msgs[ac->num_msgs] = talloc_move(ac->msgs, &ares->message);
+		ac->msgs[ac->num_msgs] = talloc_steal(ac->msgs, ares->message);
 		ac->num_msgs++;
-	}
+		ac->msgs[ac->num_msgs] = NULL;
 
-	if (ares->type == LDB_REPLY_REFERRAL) {
+		break;
+
+	case LDB_REPLY_REFERRAL:
 		ac->referrals = talloc_realloc(ac, ac->referrals, char *, ac->num_refs + 2);
 		if (! ac->referrals) {
-			goto error;
+			talloc_free(ares);
+			ldb_oom(ac->module->ldb);
+			return ldb_module_done(ac->req, NULL, NULL,
+						LDB_ERR_OPERATIONS_ERROR);
 		}
 
-		ac->referrals[ac->num_refs + 1] = NULL;
-		ac->referrals[ac->num_refs] = talloc_move(ac->referrals, &ares->referral);
-
+		ac->referrals[ac->num_refs] = talloc_steal(ac->referrals, ares->referral);
 		ac->num_refs++;
-	}
+		ac->referrals[ac->num_refs] = NULL;
 
-	if (ares->type == LDB_REPLY_DONE) {
-		ac->controls = talloc_move(ac, &ares->controls);
+		break;
+
+	case LDB_REPLY_DONE:
+
+		ret = server_sort_results(ac);
+		return ldb_module_done(ac->req, ares->controls,
+					ares->response, ret);
 	}
 
 	talloc_free(ares);
 	return LDB_SUCCESS;
-
-error:
-	talloc_free(ares);
-	return LDB_ERR_OPERATIONS_ERROR;
 }
 
 static int server_sort_search(struct ldb_module *module, struct ldb_request *req)
@@ -216,8 +239,9 @@ static int server_sort_search(struct ldb_module *module, struct ldb_request *req
 	struct ldb_control *control;
 	struct ldb_server_sort_control **sort_ctrls;
 	struct ldb_control **saved_controls;
+	struct ldb_control **controls;
+	struct ldb_request *down_req;
 	struct sort_context *ac;
-	struct ldb_handle *h;
 	int ret;
 
 	/* check if there's a paged request control */
@@ -227,19 +251,14 @@ static int server_sort_search(struct ldb_module *module, struct ldb_request *req
 		return ldb_next_request(module, req);
 	}
 
-	req->handle = NULL;
-
-	if (!req->callback || !req->context) {
-		ldb_set_errstring(module->ldb,
-				  "Async interface called with NULL callback function or NULL context");
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-	
-	h = init_handle(req, module, req->context, req->callback);
-	if (!h) {
+	ac = talloc_zero(req, struct sort_context);
+	if (ac == NULL) {
+		ldb_oom(module->ldb);
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
-	ac = talloc_get_type(h->private_data, struct sort_context);
+
+	ac->module = module;
+	ac->req = req;
 
 	sort_ctrls = talloc_get_type(control->data, struct ldb_server_sort_control *);
 	if (!sort_ctrls) {
@@ -251,26 +270,20 @@ static int server_sort_search(struct ldb_module *module, struct ldb_request *req
 		
 	if (sort_ctrls[1] != NULL) {
 		if (control->critical) {
-			struct ldb_reply *ares;
-
-			ares = talloc_zero(req, struct ldb_reply);
-			if (!ares)
-				return LDB_ERR_OPERATIONS_ERROR;
 
-			/* 53 = unwilling to perform */
-			ares->type = LDB_REPLY_DONE;
-			if ((ret = build_response(ares, &ares->controls, 53, "sort control is not complete yet")) != LDB_SUCCESS) {
-				return ret;
+			/* callback immediately */
+			ret = build_response(req, &controls,
+					     LDB_ERR_UNWILLING_TO_PERFORM,
+					     "sort control is not complete yet");
+			if (ret != LDB_SUCCESS) {
+				return ldb_module_done(req, NULL, NULL,
+						    LDB_ERR_OPERATIONS_ERROR);
 			}
 
-			h->status = LDB_ERR_UNSUPPORTED_CRITICAL_EXTENSION;
-			h->state = LDB_ASYNC_DONE;
-			ret = ac->up_callback(module->ldb, ac->up_context, ares);
-
-			return ret;
+			return ldb_module_done(req, controls, NULL, ret);
 		} else {
 			/* just pass the call down and don't do any sorting */
-			ldb_next_request(module, req);
+			return ldb_next_request(module, req);
 		}
 	}
 
@@ -278,181 +291,45 @@ static int server_sort_search(struct ldb_module *module, struct ldb_request *req
 	ac->orderingRule = sort_ctrls[0]->orderingRule;
 	ac->reverse = sort_ctrls[0]->reverse;
 
-	ac->req = talloc(req, struct ldb_request);
-	if (!ac->req)
+	ret = ldb_build_search_req_ex(&down_req, module->ldb, ac,
+					req->op.search.base,
+					req->op.search.scope,
+					req->op.search.tree,
+					req->op.search.attrs,
+					req->controls,
+					ac,
+					server_sort_search_callback,
+					req);
+	if (ret != LDB_SUCCESS) {
 		return LDB_ERR_OPERATIONS_ERROR;
-
-	ac->req->operation = req->operation;
-	ac->req->op.search.base = req->op.search.base;
-	ac->req->op.search.scope = req->op.search.scope;
-	ac->req->op.search.tree = req->op.search.tree;
-	ac->req->op.search.attrs = req->op.search.attrs;
-	ac->req->controls = req->controls;
+	}
 
 	/* save it locally and remove it from the list */
 	/* we do not need to replace them later as we
 	 * are keeping the original req intact */
-	if (!save_controls(control, ac->req, &saved_controls)) {
+	if (!save_controls(control, down_req, &saved_controls)) {
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
 
-	ac->req->context = ac;
-	ac->req->callback = server_sort_search_callback;
-	ldb_set_timeout_from_prev_req(module->ldb, req, ac->req);
-
-	req->handle = h;
-
-	return ldb_next_request(module, ac->req);
-}
-
-static int server_sort_results(struct ldb_handle *handle)
-{
-	struct sort_context *ac;
-	struct ldb_reply *ares;
-	int i, ret;
-
-	ac = talloc_get_type(handle->private_data, struct sort_context);
-
-	ac->a = ldb_schema_attribute_by_name(ac->module->ldb, ac->attributeName);
-	ac->sort_result = 0;
-
-	ldb_qsort(ac->msgs, ac->num_msgs,
-		  sizeof(struct ldb_message *),
-		  ac, (ldb_qsort_cmp_fn_t)sort_compare);
-
-	for (i = 0; i < ac->num_msgs; i++) {
-		ares = talloc_zero(ac, struct ldb_reply);
-		if (!ares) {
-			handle->status = LDB_ERR_OPERATIONS_ERROR;
-			return handle->status;
-		}
-
-		ares->type = LDB_REPLY_ENTRY;
-		ares->message = talloc_move(ares, &ac->msgs[i]);
-		
-		handle->status = ac->up_callback(ac->module->ldb, ac->up_context, ares);
-		if (handle->status != LDB_SUCCESS) {
-			return handle->status;
-		}
-	}
-
-	for (i = 0; i < ac->num_refs; i++) {
-		ares = talloc_zero(ac, struct ldb_reply);
-		if (!ares) {
-			handle->status = LDB_ERR_OPERATIONS_ERROR;
-			return handle->status;
-		}
-
-		ares->type = LDB_REPLY_REFERRAL;
-		ares->referral = talloc_move(ares, &ac->referrals[i]);
-		
-		handle->status = ac->up_callback(ac->module->ldb, ac->up_context, ares);
-		if (handle->status != LDB_SUCCESS) {
-			return handle->status;
-		}
-	}
-
-	ares = talloc_zero(ac, struct ldb_reply);
-	if (!ares) {
-		handle->status = LDB_ERR_OPERATIONS_ERROR;
-		return handle->status;
-	}
-
-	ares->type = LDB_REPLY_DONE;
-	ares->controls = talloc_move(ares, &ac->controls);
-		
-	handle->status = ac->up_callback(ac->module->ldb, ac->up_context, ares);
-	if (handle->status != LDB_SUCCESS) {
-		return handle->status;
-	}
-
-	if ((ret = build_response(ac, &ac->controls, ac->sort_result, "sort control is not complete yet")) != LDB_SUCCESS) {
-		return ret;
-	}
-
-	return LDB_SUCCESS;
-}
-
-static int server_sort_wait_once(struct ldb_handle *handle)
-{
-	struct sort_context *ac;
-	int ret;
-    
-	if (!handle || !handle->private_data) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	ac = talloc_get_type(handle->private_data, struct sort_context);
-
-	ret = ldb_wait(ac->req->handle, LDB_WAIT_NONE);
-
-	if (ret != LDB_SUCCESS) {
-		handle->status = ret;
-		return ret;
-	}
-		
-	handle->state = ac->req->handle->state;
-	handle->status = ac->req->handle->status;
-
-	if (handle->status != LDB_SUCCESS) {
-		return handle->status;
-	}
-
-	if (handle->state == LDB_ASYNC_DONE) {
-		ret = server_sort_results(handle);
-	}
-
-	return ret;
-}
-
-static int server_sort_wait(struct ldb_handle *handle, enum ldb_wait_type type)
-{
-	int ret;
- 
-	if (!handle || !handle->private_data) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	if (type == LDB_WAIT_ALL) {
-		while (handle->state != LDB_ASYNC_DONE) {
-			ret = server_sort_wait_once(handle);
-			if (ret != LDB_SUCCESS) {
-				return ret;
-			}
-		}
-
-		return handle->status;
-	}
-
-	return server_sort_wait_once(handle);
+	return ldb_next_request(module, down_req);
 }
 
 static int server_sort_init(struct ldb_module *module)
 {
-	struct ldb_request *req;
 	int ret;
 
-	req = talloc(module, struct ldb_request);
-	if (req == NULL) {
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-
-	req->operation = LDB_REQ_REGISTER_CONTROL;
-	req->op.reg_control.oid = LDB_CONTROL_SERVER_SORT_OID;
-	req->controls = NULL;
-
-	ret = ldb_request(module->ldb, req);
+	ret = ldb_mod_register_control(module, LDB_CONTROL_SERVER_SORT_OID);
 	if (ret != LDB_SUCCESS) {
-		ldb_debug(module->ldb, LDB_DEBUG_WARNING, "server_sort: Unable to register control with rootdse!\n");
+		ldb_debug(module->ldb, LDB_DEBUG_WARNING,
+			"server_sort:"
+			"Unable to register control with rootdse!\n");
 	}
 
-	talloc_free(req);
 	return ldb_next_init(module);
 }
 
 const struct ldb_module_ops ldb_server_sort_module_ops = {
 	.name		   = "server_sort",
 	.search            = server_sort_search,
-	.wait              = server_sort_wait,
 	.init_context	   = server_sort_init
 };