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-rw-r--r--source4/dsdb/samdb/ldb_modules/show_deleted.c109
1 files changed, 71 insertions, 38 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/show_deleted.c b/source4/dsdb/samdb/ldb_modules/show_deleted.c
index bef4c06090..773dcfbf3f 100644
--- a/source4/dsdb/samdb/ldb_modules/show_deleted.c
+++ b/source4/dsdb/samdb/ldb_modules/show_deleted.c
@@ -36,60 +36,83 @@
#include "dsdb/samdb/samdb.h"
#include "dsdb/samdb/ldb_modules/util.h"
+struct show_deleted_state {
+ bool need_refresh;
+ bool recycle_bin_enabled;
+};
+
static int show_deleted_search(struct ldb_module *module, struct ldb_request *req)
{
struct ldb_context *ldb;
struct ldb_control *show_del, *show_rec;
struct ldb_request *down_req;
struct ldb_parse_tree *new_tree = req->op.search.tree;
+ struct show_deleted_state *state;
int ret;
+ const char *attr_filter = NULL;
ldb = ldb_module_get_ctx(module);
+ state = talloc_get_type(ldb_module_get_private(module), struct show_deleted_state);
+
+ /* note that state may be NULL during initialisation */
+ if (state != NULL && state->need_refresh) {
+ state->need_refresh = false;
+ ret = dsdb_recyclebin_enabled(module, &state->recycle_bin_enabled);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+
+ /* This is the logic from MS-ADTS 3.1.1.3.4.1.14 that
+ determines if objects are visible
+
+ Extended control name Deleted-objects Tombstones Recycled-objects
+ LDAP_SERVER_SHOW_DELETED_OID Visible Visible Not Visible
+ LDAP_SERVER_SHOW_RECYCLED_OID Visible Visible Visible
+
+ Note that if the recycle bin is disabled, then the
+ isRecycled attribute is ignored, and objects are either
+ "normal" or "tombstone".
+
+ When the recycle bin is enabled, then objects are in one of
+ 3 states, "normal", "deleted" or "recycled"
+ */
+
/* check if there's a show deleted control */
show_del = ldb_request_get_control(req, LDB_CONTROL_SHOW_DELETED_OID);
/* check if there's a show recycled control */
show_rec = ldb_request_get_control(req, LDB_CONTROL_SHOW_RECYCLED_OID);
- if ((show_del == NULL) && (show_rec == NULL)) {
- /* Here we have to suppress all deleted objects:
- * MS-ADTS 3.1.1.3.4.1
- *
- * Filter: (&(!(isDeleted=TRUE))(...))
- */
- /* FIXME: we could use a constant tree here once we are sure
- * that no ldb modules modify trees in-site */
- new_tree = talloc(req, struct ldb_parse_tree);
- if (!new_tree) {
- return ldb_oom(ldb);
+
+ if (state == NULL || !state->recycle_bin_enabled) {
+ /* when recycle bin is not enabled, then all we look
+ at is the isDeleted attribute. We hide objects with this
+ attribute set to TRUE when the client has not specified either
+ SHOW_DELETED or SHOW_RECYCLED
+ */
+ if (show_del != NULL || show_rec != NULL) {
+ attr_filter = NULL;
+ } else {
+ attr_filter = "isDeleted";
}
- new_tree->operation = LDB_OP_AND;
- new_tree->u.list.num_elements = 2;
- new_tree->u.list.elements = talloc_array(new_tree, struct ldb_parse_tree *, 2);
- if (!new_tree->u.list.elements) {
- return ldb_oom(ldb);
+ } else {
+ /* the recycle bin is enabled
+ */
+ if (show_rec != NULL) {
+ attr_filter = NULL;
+ } else if (show_del != NULL) {
+ /* we want deleted but not recycled objects */
+ attr_filter = "isRecycled";
+ } else {
+ /* we don't want deleted or recycled objects,
+ * which we get by filtering on isDeleted */
+ attr_filter = "isDeleted";
}
+ }
- new_tree->u.list.elements[0] = talloc(new_tree->u.list.elements, struct ldb_parse_tree);
- new_tree->u.list.elements[0]->operation = LDB_OP_NOT;
- new_tree->u.list.elements[0]->u.isnot.child =
- talloc(new_tree->u.list.elements, struct ldb_parse_tree);
- if (!new_tree->u.list.elements[0]->u.isnot.child) {
- return ldb_oom(ldb);
- }
- new_tree->u.list.elements[0]->u.isnot.child->operation = LDB_OP_EQUALITY;
- new_tree->u.list.elements[0]->u.isnot.child->u.equality.attr = "isDeleted";
- new_tree->u.list.elements[0]->u.isnot.child->u.equality.value = data_blob_string_const("TRUE");
- new_tree->u.list.elements[1] = req->op.search.tree;
- } else if ((show_del != NULL) && (show_rec == NULL)) {
- /* Here we need to suppress all recycled objects:
- * MS-ADTS 3.1.1.3.4.1
- *
- * Filter: (&(!(isRecycled=TRUE))(...))
- */
- /* FIXME: we could use a constant tree here once we are sure
- * that no ldb modules modify trees in-site */
+ if (attr_filter != NULL) {
new_tree = talloc(req, struct ldb_parse_tree);
if (!new_tree) {
return ldb_oom(ldb);
@@ -109,9 +132,8 @@ static int show_deleted_search(struct ldb_module *module, struct ldb_request *re
return ldb_oom(ldb);
}
new_tree->u.list.elements[0]->u.isnot.child->operation = LDB_OP_EQUALITY;
- new_tree->u.list.elements[0]->u.isnot.child->u.equality.attr = "isRecycled";
+ new_tree->u.list.elements[0]->u.isnot.child->u.equality.attr = attr_filter;
new_tree->u.list.elements[0]->u.isnot.child->u.equality.value = data_blob_string_const("TRUE");
-
new_tree->u.list.elements[1] = req->op.search.tree;
}
@@ -144,6 +166,13 @@ static int show_deleted_init(struct ldb_module *module)
{
struct ldb_context *ldb;
int ret;
+ struct show_deleted_state *state;
+
+ state = talloc_zero(module, struct show_deleted_state);
+ if (state == NULL) {
+ return ldb_module_oom(module);
+ }
+ state->need_refresh = true;
ldb = ldb_module_get_ctx(module);
@@ -161,7 +190,11 @@ static int show_deleted_init(struct ldb_module *module)
return ldb_operr(ldb);
}
- return ldb_next_init(module);
+ ret = ldb_next_init(module);
+
+ ldb_module_set_private(module, state);
+
+ return ret;
}
static const struct ldb_module_ops ldb_show_deleted_module_ops = {