Rework control handling to remove the 'domain_scope' control

Also remove the search_options control earlier, before, rather than
after duplicating the request.

When we generate referalls in the partition module, the domain_scope
control with suppress them.

Andrew Bartlett
(This used to be commit fc57a119f53a7bc0a0eb76b868bbd7386b3c5008)

1 files changed, 37 insertions, 17 deletions

diff --git a/source4/dsdb/samdb/ldb_modules/partition.c b/source4/dsdb/samdb/ldb_modules/partition.c
index 4586810d96..61b64441a7 100644
--- a/source4/dsdb/samdb/ldb_modules/partition.c
+++ b/source4/dsdb/samdb/ldb_modules/partition.c
@@ -169,13 +169,12 @@ static int partition_other_callback(struct ldb_context *ldb, void *context, stru
 }
 
 
-static int partition_send_request(struct partition_context *ac, struct ldb_control *remove_control, 
+static int partition_send_request(struct partition_context *ac, 
 				  struct dsdb_control_current_partition *partition)
 {
 	int ret;
 	struct ldb_module *backend;
 	struct ldb_request *req;
-	struct ldb_control **saved_controls;
 
 	if (partition) {
 		backend = make_module_for_next_request(ac, ac->module->ldb, partition->module);
@@ -225,12 +224,6 @@ static int partition_send_request(struct partition_context *ac, struct ldb_contr
 		req->context = ac;
 	}
 
-	/* Remove a control, so we don't confuse a backend server */
-	if (remove_control && !save_controls(remove_control, req, &saved_controls)) {
-		ldb_oom(ac->module->ldb);
-		return LDB_ERR_OPERATIONS_ERROR;
-	}
-	
 	if (partition) {
 		ret = ldb_request_add_control(req, DSDB_CONTROL_CURRENT_PARTITION_OID, false, partition);
 		if (ret != LDB_SUCCESS) {
@@ -253,18 +246,17 @@ static int partition_send_request(struct partition_context *ac, struct ldb_contr
  */
 static int partition_send_all(struct ldb_module *module, 
 			      struct partition_context *ac, 
-			      struct ldb_control *remove_control, 
 			      struct ldb_request *req) 
 {
 	int i;
 	struct partition_private_data *data = talloc_get_type(module->private_data, 
 							      struct partition_private_data);
-	int ret = partition_send_request(ac, remove_control, NULL);
+	int ret = partition_send_request(ac, NULL);
 	if (ret != LDB_SUCCESS) {
 		return ret;
 	}
 	for (i=0; data && data->partitions && data->partitions[i]; i++) {
-		ret = partition_send_request(ac, remove_control, data->partitions[i]);
+		ret = partition_send_request(ac, data->partitions[i]);
 		if (ret != LDB_SUCCESS) {
 			return ret;
 		}
@@ -297,7 +289,7 @@ static int partition_replicate(struct ldb_module *module, struct ldb_request *re
 					return LDB_ERR_OPERATIONS_ERROR;
 				}
 				
-				return partition_send_all(module, ac, NULL, req);
+				return partition_send_all(module, ac, req);
 			}
 		}
 	}
@@ -314,6 +306,7 @@ static int partition_replicate(struct ldb_module *module, struct ldb_request *re
 		 * TODO: we should maybe return an error here
 		 *       if it's not a special dn
 		 */
+
 		return ldb_next_request(module, req);
 	}
 
@@ -334,6 +327,8 @@ static int partition_replicate(struct ldb_module *module, struct ldb_request *re
 /* search */
 static int partition_search(struct ldb_module *module, struct ldb_request *req)
 {
+	struct ldb_control **saved_controls;
+	
 	/* Find backend */
 	struct partition_private_data *data = talloc_get_type(module->private_data, 
 							      struct partition_private_data);
@@ -342,19 +337,34 @@ static int partition_search(struct ldb_module *module, struct ldb_request *req)
 	/* (later) consider if we should be searching multiple
 	 * partitions (for 'invisible' partition behaviour */
 	struct ldb_control *search_control = ldb_request_get_control(req, LDB_CONTROL_SEARCH_OPTIONS_OID);
+	struct ldb_control *domain_scope_control = ldb_request_get_control(req, LDB_CONTROL_DOMAIN_SCOPE_OID);
 	
 	struct ldb_search_options_control *search_options = NULL;
 	if (search_control) {
 		search_options = talloc_get_type(search_control->data, struct ldb_search_options_control);
 	}
 
+	/* Remove the domain_scope control, so we don't confuse a backend server */
+	if (domain_scope_control && !save_controls(domain_scope_control, req, &saved_controls)) {
+		ldb_oom(module->ldb);
+		return LDB_ERR_OPERATIONS_ERROR;
+	}
+
+	/* TODO:
+	   Generate referrals (look for a partition under this DN) if we don't have the above control specified
+	*/
+	
 	if (search_options && (search_options->search_options & LDB_SEARCH_OPTION_PHANTOM_ROOT)) {
 		int ret, i;
 		struct partition_context *ac;
-		struct ldb_control *remove_control = NULL;
 		if ((search_options->search_options & ~LDB_SEARCH_OPTION_PHANTOM_ROOT) == 0) {
 			/* We have processed this flag, so we are done with this control now */
-			remove_control = search_control;
+
+			/* Remove search control, so we don't confuse a backend server */
+			if (search_control && !save_controls(search_control, req, &saved_controls)) {
+				ldb_oom(module->ldb);
+				return LDB_ERR_OPERATIONS_ERROR;
+			}
 		}
 		ac = partition_init_handle(req, module);
 		if (!ac) {
@@ -363,12 +373,12 @@ static int partition_search(struct ldb_module *module, struct ldb_request *req)
 
 		/* Search from the base DN */
 		if (!req->op.search.base || ldb_dn_is_null(req->op.search.base)) {
-			return partition_send_all(module, ac, remove_control, req);
+			return partition_send_all(module, ac, req);
 		}
 		for (i=0; data && data->partitions && data->partitions[i]; i++) {
 			/* Find all partitions under the search base */
 			if (ldb_dn_compare_base(req->op.search.base, data->partitions[i]->dn) == 0) {
-				ret = partition_send_request(ac, remove_control, data->partitions[i]);
+				ret = partition_send_request(ac, data->partitions[i]);
 				if (ret != LDB_SUCCESS) {
 					return ret;
 				}
@@ -384,6 +394,16 @@ static int partition_search(struct ldb_module *module, struct ldb_request *req)
 		return LDB_SUCCESS;
 	} else {
 		/* Handle this like all other requests */
+		if (search_control && (search_options->search_options & ~LDB_SEARCH_OPTION_PHANTOM_ROOT) == 0) {
+			/* We have processed this flag, so we are done with this control now */
+
+			/* Remove search control, so we don't confuse a backend server */
+			if (search_control && !save_controls(search_control, req, &saved_controls)) {
+				ldb_oom(module->ldb);
+				return LDB_ERR_OPERATIONS_ERROR;
+			}
+		}
+
 		return partition_replicate(module, req, req->op.search.base);
 	}
 }
@@ -693,7 +713,7 @@ static int partition_extended(struct ldb_module *module, struct ldb_request *req
 		return LDB_ERR_OPERATIONS_ERROR;
 	}
 			
-	return partition_send_all(module, ac, NULL, req);
+	return partition_send_all(module, ac, req);
 }
 
 static int sort_compare(void *void1,