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-rw-r--r--source4/lib/ldb/modules/asq.c235
1 files changed, 131 insertions, 104 deletions
diff --git a/source4/lib/ldb/modules/asq.c b/source4/lib/ldb/modules/asq.c
index f361b801ea..92e2fc5294 100644
--- a/source4/lib/ldb/modules/asq.c
+++ b/source4/lib/ldb/modules/asq.c
@@ -38,11 +38,12 @@
struct asq_context {
- enum {ASQ_SEARCH_BASE, ASQ_SEARCH_MULTI} step;
+ enum {ASQ_INIT, ASQ_SEARCH_BASE, ASQ_SEARCH_MULTI} step;
struct ldb_module *module;
- void *up_context;
- int (*up_callback)(struct ldb_context *, void *, struct ldb_reply *);
+ struct ldb_request *orig_req;
+
+ struct ldb_asq_control *asq_ctrl;
const char * const *req_attrs;
char *req_attribute;
@@ -63,14 +64,12 @@ struct asq_context {
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 struct ldb_handle *init_handle(struct ldb_request *req, struct ldb_module *module)
{
struct asq_context *ac;
struct ldb_handle *h;
- h = talloc_zero(mem_ctx, struct ldb_handle);
+ h = talloc_zero(req, struct ldb_handle);
if (h == NULL) {
ldb_set_errstring(module->ldb, "Out of Memory");
return NULL;
@@ -90,9 +89,9 @@ static struct ldb_handle *init_handle(void *mem_ctx, struct ldb_module *module,
h->state = LDB_ASYNC_INIT;
h->status = LDB_SUCCESS;
+ ac->step = ASQ_INIT;
ac->module = module;
- ac->up_context = context;
- ac->up_callback = callback;
+ ac->orig_req = req;
return h;
}
@@ -147,7 +146,7 @@ static int asq_terminate(struct ldb_handle *handle)
ares->controls[i + 1] = NULL;
- ac->up_callback(ac->module->ldb, ac->up_context, ares);
+ ac->orig_req->callback(ac->module->ldb, ac->orig_req->context, ares);
return LDB_SUCCESS;
}
@@ -198,7 +197,7 @@ static int asq_reqs_callback(struct ldb_context *ldb, void *context, struct ldb_
/* pass the message up to the original callback as we
* do not have to elaborate on it any further */
- return ac->up_callback(ac->module->ldb, ac->up_context, ares);
+ return ac->orig_req->callback(ac->module->ldb, ac->orig_req->context, ares);
} else { /* ignore any REFERRAL or DONE reply */
talloc_free(ares);
@@ -210,96 +209,38 @@ error:
return LDB_ERR_OPERATIONS_ERROR;
}
-static int asq_search(struct ldb_module *module, struct ldb_request *req)
+static int asq_build_first_request(struct asq_context *ac)
{
- struct ldb_control *control;
- struct ldb_asq_control *asq_ctrl;
- struct asq_context *ac;
- struct ldb_handle *h;
char **base_attrs;
- int ret;
-
- /* check if there's a paged request control */
- control = get_control_from_list(req->controls, LDB_CONTROL_ASQ_OID);
- if (control == NULL) {
- /* not found go on */
- 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;
- }
-
- asq_ctrl = talloc_get_type(control->data, struct ldb_asq_control);
- if (!asq_ctrl) {
- return LDB_ERR_PROTOCOL_ERROR;
- }
-
- h = init_handle(req, module, req->context, req->callback);
- if (!h) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
- ac = talloc_get_type(h->private_data, struct asq_context);
- req->handle = h;
-
- /* check the search is well formed */
- if (req->op.search.scope != LDB_SCOPE_BASE) {
- ac->asq_ret = ASQ_CTRL_UNWILLING_TO_PERFORM;
- return asq_terminate(h);
- }
-
- ac->req_attrs = req->op.search.attrs;
- ac->req_attribute = talloc_strdup(ac, asq_ctrl->source_attribute);
- if (ac->req_attribute == NULL)
- return LDB_ERR_OPERATIONS_ERROR;
+ ac->base_req = talloc_zero(ac, struct ldb_request);
+ if (ac->base_req == NULL) return LDB_ERR_OPERATIONS_ERROR;
- /* get the object to retrieve the DNs to search */
- ac->base_req = talloc_zero(req, struct ldb_request);
- if (ac->base_req == NULL)
- return LDB_ERR_OPERATIONS_ERROR;
- ac->base_req->operation = req->operation;
- ac->base_req->op.search.base = req->op.search.base;
+ 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 = req->op.search.tree;
+ ac->base_req->op.search.tree = ac->orig_req->op.search.tree;
base_attrs = talloc_array(ac->base_req, char *, 2);
- if (base_attrs == NULL)
- return LDB_ERR_OPERATIONS_ERROR;
- base_attrs[0] = talloc_strdup(base_attrs, asq_ctrl->source_attribute);
- if (base_attrs[0] == NULL)
- return LDB_ERR_OPERATIONS_ERROR;
+ 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(module->ldb, req, ac->base_req);
-
- ac->step = ASQ_SEARCH_BASE;
-
- ret = ldb_request(module->ldb, ac->base_req);
-
- if (ret != LDB_SUCCESS) {
- return ret;
- }
+ ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->base_req);
return LDB_SUCCESS;
}
-static int asq_requests(struct ldb_handle *handle) {
- struct asq_context *ac;
+static int asq_build_multiple_requests(struct asq_context *ac, struct ldb_handle *handle)
+{
struct ldb_message_element *el;
int i;
- ac = talloc_get_type(handle->private_data, struct asq_context);
- if (ac == NULL) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
/* look up the DNs */
if (ac->base_res == NULL) {
return LDB_ERR_NO_SUCH_OBJECT;
@@ -311,7 +252,6 @@ static int asq_requests(struct ldb_handle *handle) {
return asq_terminate(handle);
}
- /* build up the requests call chain */
ac->num_reqs = el->num_values;
ac->cur_req = 0;
ac->reqs = talloc_array(ac, struct ldb_request *, ac->num_reqs);
@@ -339,11 +279,114 @@ static int asq_requests(struct ldb_handle *handle) {
ldb_set_timeout_from_prev_req(ac->module->ldb, ac->base_req, ac->reqs[i]);
}
- ac->step = ASQ_SEARCH_MULTI;
-
return LDB_SUCCESS;
}
+static int asq_search_continue(struct ldb_handle *h)
+{
+ struct asq_context *ac;
+ int ret;
+
+ ac = talloc_get_type(h->private_data, struct asq_context);
+
+ 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(h);
+ }
+
+ 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;
+
+ return ldb_request(ac->module->ldb, ac->base_req);
+
+ case ASQ_SEARCH_BASE:
+
+ /* build up the requests call chain */
+ ret = asq_build_multiple_requests(ac, h);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ if (h->state == LDB_ASYNC_DONE) {
+ return LDB_SUCCESS;
+ }
+
+ ac->step = ASQ_SEARCH_MULTI;
+
+ /* no break nor return,
+ * the set of requests is performed in ASQ_SEARCH_MULTI
+ */
+ /* fall through */
+
+ case ASQ_SEARCH_MULTI:
+
+ if (ac->cur_req >= ac->num_reqs) {
+ return asq_terminate(h);
+ }
+
+ return ldb_request(ac->module->ldb, ac->reqs[ac->cur_req]);
+
+ default:
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ break;
+ }
+
+ /* this is reached only in case of error */
+ /* FIXME: fire an async reply ? */
+ h->status = ret;
+ h->state = LDB_ASYNC_DONE;
+ return ret;
+}
+
+static int asq_search(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_control *control;
+ struct asq_context *ac;
+ struct ldb_handle *h;
+
+ /* check if there's a paged request control */
+ control = get_control_from_list(req->controls, LDB_CONTROL_ASQ_OID);
+ if (control == NULL) {
+ /* not found go on */
+ 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);
+ if (!h) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ 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_none(struct ldb_handle *handle)
{
struct asq_context *ac;
@@ -382,22 +425,10 @@ static int asq_wait_none(struct ldb_handle *handle)
return LDB_SUCCESS;
}
- ret = asq_requests(handle);
-
- /* no break nor return,
- * the set of requests is performed in ASQ_SEARCH_MULTI
- */
- /* fall through */
+ return asq_search_continue(handle);
case ASQ_SEARCH_MULTI:
- if (ac->reqs[ac->cur_req]->handle == NULL) {
- ret = ldb_request(ac->module->ldb, ac->reqs[ac->cur_req]);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
- }
-
ret = ldb_wait(ac->reqs[ac->cur_req]->handle, LDB_WAIT_NONE);
if (ret != LDB_SUCCESS) {
@@ -412,11 +443,7 @@ static int asq_wait_none(struct ldb_handle *handle)
ac->cur_req++;
}
- if (ac->cur_req < ac->num_reqs) {
- return LDB_SUCCESS;
- }
-
- return asq_terminate(handle);
+ return asq_search_continue(handle);
default:
ret = LDB_ERR_OPERATIONS_ERROR;
generated by cgit (git 2.34.1) at 2024-11-10 21:16:31 +0000