1 files changed, 137 insertions, 0 deletions
diff --git a/source3/winbindd/wb_alias_members.c b/source3/winbindd/wb_alias_members.c
new file mode 100644
index 0000000..06c2292
--- /dev/null
+++ b/source3/winbindd/wb_alias_members.c
@@ -0,0 +1,137 @@
+/*
+   Unix SMB/CIFS implementation.
+   async alias_members
+   Copyright (C) Pavel Filipenský 2023
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "winbindd.h"
+#include "librpc/gen_ndr/ndr_winbind_c.h"
+#include "../libcli/security/security.h"
+
+struct wb_alias_members_state {
+	struct tevent_context *ev;
+	struct dom_sid sid;
+	struct wbint_SidArray sids;
+};
+
+static void wb_alias_members_done(struct tevent_req *subreq);
+
+struct tevent_req *wb_alias_members_send(TALLOC_CTX *mem_ctx,
+					 struct tevent_context *ev,
+					 const struct dom_sid *sid,
+					 enum lsa_SidType type,
+					 int max_nesting)
+{
+	struct tevent_req *req, *subreq;
+	struct wb_alias_members_state *state;
+	struct winbindd_domain *domain;
+	NTSTATUS status;
+	struct dom_sid_buf buf;
+
+	req = tevent_req_create(mem_ctx, &state, struct wb_alias_members_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	D_INFO("WB command alias_members start.\nLooking up SID %s.\n",
+	       dom_sid_str_buf(sid, &buf));
+
+	if (max_nesting <= 0) {
+		D_DEBUG("Finished. The depth based on 'winbind expand groups' is %d.\n", max_nesting);
+		state->sids.num_sids = 0;
+		state->sids.sids = NULL;
+		tevent_req_done(req);
+		return tevent_req_post(req, ev);
+	}
+
+	sid_copy(&state->sid, sid);
+
+	status = lookup_usergroups_cached(state,
+					  &state->sid,
+					  &state->sids.num_sids,
+					  &state->sids.sids);
+	if (NT_STATUS_IS_OK(status)) {
+		tevent_req_done(req);
+		return tevent_req_post(req, ev);
+	}
+
+	domain = find_domain_from_sid_noinit(&state->sid);
+	if (domain == NULL) {
+		DBG_WARNING("could not find domain entry for sid %s\n",
+			    dom_sid_str_buf(&state->sid, &buf));
+		tevent_req_nterror(req, NT_STATUS_NO_SUCH_ALIAS);
+		return tevent_req_post(req, ev);
+	}
+
+	subreq = dcerpc_wbint_LookupAliasMembers_send(state,
+						      ev,
+						      dom_child_handle(domain),
+						      &state->sid,
+						      type,
+						      &state->sids);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, wb_alias_members_done, req);
+	return req;
+}
+
+static void wb_alias_members_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req =
+		tevent_req_callback_data(subreq, struct tevent_req);
+	struct wb_alias_members_state *state =
+		tevent_req_data(req, struct wb_alias_members_state);
+	NTSTATUS status, result;
+
+	status = dcerpc_wbint_LookupAliasMembers_recv(subreq, state, &result);
+	TALLOC_FREE(subreq);
+	if (any_nt_status_not_ok(status, result, &status)) {
+		D_WARNING("Failed with %s.\n", nt_errstr(status));
+		tevent_req_nterror(req, status);
+		return;
+	}
+	tevent_req_done(req);
+}
+
+NTSTATUS wb_alias_members_recv(struct tevent_req *req,
+			       TALLOC_CTX *mem_ctx,
+			       uint32_t *num_sids,
+			       struct dom_sid **sids)
+{
+	struct wb_alias_members_state *state =
+		tevent_req_data(req, struct wb_alias_members_state);
+	NTSTATUS status;
+	uint32_t i;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+	*num_sids = state->sids.num_sids;
+	*sids = talloc_move(mem_ctx, &state->sids.sids);
+
+	D_INFO("WB command alias_members end.\nReceived %" PRIu32 " SID(s).\n",
+	       *num_sids);
+	if (CHECK_DEBUGLVL(DBGLVL_INFO)) {
+		for (i = 0; i < *num_sids; i++) {
+			struct dom_sid_buf buf;
+			D_INFO("%" PRIu32 ": %s\n",
+			       i,
+			       dom_sid_str_buf(&(*sids)[i], &buf));
+		}
+	}
+	return NT_STATUS_OK;
+}