ldb database library
Copyright (C) Andrew Tridgell 2005
+ Copyright (C) Simo Sorce 2006
** NOTE! The following LGPL license applies to the ldb
** library. This does NOT imply that all of Samba is released
return ret;
}
+/*
+ hook search operations
+*/
+
+struct operational_async_context {
+
+ struct ldb_module *module;
+ void *up_context;
+ int (*up_callback)(struct ldb_context *, void *, struct ldb_async_result *);
+ int timeout;
+
+ const char * const *attrs;
+};
+
+static int operational_async_callback(struct ldb_context *ldb, void *context, struct ldb_async_result *ares) {
+
+ struct operational_async_context *ac;
+
+ if (!context || !ares) {
+ ldb_set_errstring(ldb, talloc_asprintf(ldb, "NULL Context or Result in callback"));
+ goto error;
+ }
+
+ ac = talloc_get_type(context, struct operational_async_context);
+
+ if (ares->type == 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;
+ }
+ }
+
+ return ac->up_callback(ldb, ac->up_context, ares);
+
+error:
+ talloc_free(ares);
+ return LDB_ERR_OPERATIONS_ERROR;
+}
+
+static int operational_search_async(struct ldb_module *module, struct ldb_request *req)
+{
+ struct operational_async_context *ac;
+ struct ldb_request *down_req;
+ const char **search_attrs = NULL;
+ int i, a, ret;
+
+ req->async.handle = NULL;
+
+ ac = talloc(req, struct operational_async_context);
+ if (ac == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ac->module = module;
+ ac->up_context = req->async.context;
+ ac->up_callback = req->async.callback;
+ ac->timeout = req->async.timeout;
+ 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
+ * unmodified. SSS */
+ /* replace any attributes in the parse tree that are
+ searchable, but are stored using a different name in the
+ backend */
+ for (i=0;i<ARRAY_SIZE(parse_tree_sub);i++) {
+ ldb_parse_tree_attr_replace(req->op.search.tree,
+ parse_tree_sub[i].attr,
+ parse_tree_sub[i].replace);
+ }
+
+ /* in the list of attributes we are looking for, rename any
+ attributes to the alias for any hidden attributes that can
+ be fetched directly using non-hidden names */
+ for (a=0;ac->attrs && ac->attrs[a];a++) {
+ for (i=0;i<ARRAY_SIZE(search_sub);i++) {
+ if (ldb_attr_cmp(ac->attrs[a], search_sub[i].attr) == 0 &&
+ search_sub[i].replace) {
+ if (!search_attrs) {
+ search_attrs = ldb_attr_list_copy(req, ac->attrs);
+ if (search_attrs == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
+ search_attrs[a] = search_sub[i].replace;
+ }
+ }
+ }
+
+ /* 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->creds = req->creds;
+
+ down_req->async.context = ac;
+ down_req->async.callback = operational_async_callback;
+ down_req->async.timeout = req->async.timeout;
+
+ /* perform the search */
+ 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->async.handle = down_req->async.handle;
+ }
+
+ return ret;
+}
+
+/*
+ hook add record ops
+*/
+static int operational_add_async(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_request *down_req;
+ struct ldb_message *msg;
+ time_t t = time(NULL);
+ int ret;
+
+ if (ldb_dn_is_special(req->op.add.message->dn)) {
+ return ldb_next_request(module, req);
+ }
+
+ down_req = talloc(req, struct ldb_request);
+ if (down_req == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* we have to copy the message as the caller might have it as a const */
+ msg = ldb_msg_copy_shallow(down_req, req->op.add.message);
+ if (msg == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ if (add_time_element(msg, "whenCreated", t) != 0 ||
+ add_time_element(msg, "whenChanged", t) != 0) {
+ talloc_free(down_req);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* see if the backend can give us the USN */
+ if (module->ldb->sequence_number != NULL) {
+ uint64_t seq_num = module->ldb->sequence_number(module->ldb);
+ if (add_uint64_element(msg, "uSNCreated", seq_num) != 0 ||
+ add_uint64_element(msg, "uSNChanged", seq_num) != 0) {
+ talloc_free(down_req);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
+
+ down_req->op.add.message = msg;
+
+ down_req->controls = req->controls;
+ down_req->creds = req->creds;
+
+ down_req->async.context = req->async.context;
+ down_req->async.callback = req->async.callback;
+ down_req->async.timeout = req->async.timeout;
+
+ /* 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->async.handle = down_req->async.handle;
+ }
+
+ return ret;
+}
+
+/*
+ hook modify record ops
+*/
+static int operational_modify_async(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_request *down_req;
+ struct ldb_message *msg;
+ time_t t = time(NULL);
+ int ret;
+
+ if (ldb_dn_is_special(req->op.mod.message->dn)) {
+ return ldb_next_request(module, req);
+ }
+
+ down_req = talloc(req, struct ldb_request);
+ if (down_req == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* we have to copy the message as the caller might have it as a const */
+ msg = ldb_msg_copy_shallow(down_req, req->op.mod.message);
+ if (msg == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ if (add_time_element(msg, "whenChanged", t) != 0) {
+ talloc_free(down_req);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* update the records USN if possible */
+ if (module->ldb->sequence_number != NULL &&
+ add_uint64_element(msg, "uSNChanged",
+ module->ldb->sequence_number(module->ldb)) != 0) {
+ talloc_free(down_req);
+ return -1;
+ }
+
+ down_req->op.mod.message = msg;
+
+ down_req->controls = req->controls;
+ down_req->creds = req->creds;
+
+ down_req->async.context = req->async.context;
+ down_req->async.callback = req->async.callback;
+ down_req->async.timeout = req->async.timeout;
+
+ /* 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->async.handle = down_req->async.handle;
+ }
+
+ return ret;
+}
+
static int operational_request(struct ldb_module *module, struct ldb_request *req)
{
case LDB_REQ_MODIFY:
return operational_modify(module, req);
+ case LDB_ASYNC_SEARCH:
+ return operational_search_async(module, req);
+
+ case LDB_ASYNC_ADD:
+ return operational_add_async(module, req);
+
+ case LDB_ASYNC_MODIFY:
+ return operational_modify_async(module, req);
+
default:
return ldb_next_request(module, req);
git.samba.org / kai / samba.git / commitdiff