s3:winbind: Add async wb_uid2sid

1 files changed, 119 insertions, 0 deletions

diff --git a/source3/winbindd/wb_uid2sid.c b/source3/winbindd/wb_uid2sid.c
new file mode 100644
index 0000000000..18ef3b214a
--- /dev/null
+++ b/source3/winbindd/wb_uid2sid.c
@@ -0,0 +1,119 @@
+/*
+   Unix SMB/CIFS implementation.
+   async uid2sid
+   Copyright (C) Volker Lendecke 2009
+
+   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/cli_wbint.h"
+
+struct wb_uid2sid_state {
+	struct tevent_context *ev;
+	char *dom_name;
+	struct dom_sid sid;
+};
+
+static void wb_uid2sid_done(struct tevent_req *subreq);
+
+struct tevent_req *wb_uid2sid_send(TALLOC_CTX *mem_ctx,
+				   struct tevent_context *ev,
+				   uid_t uid)
+{
+	struct tevent_req *req, *subreq;
+	struct wb_uid2sid_state *state;
+	struct winbindd_domain *domain;
+	struct winbindd_child *child;
+	bool expired;
+
+	req = tevent_req_create(mem_ctx, &state, struct wb_uid2sid_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	if (winbindd_use_idmap_cache()
+	    && idmap_cache_find_uid2sid(uid, &state->sid, &expired)) {
+
+		DEBUG(10, ("idmap_cache_find_uid2sid found %d%s\n",
+			   (int)uid, expired ? " (expired)": ""));
+
+		if (!expired || idmap_is_offline()) {
+			if (is_null_sid(&state->sid)) {
+				tevent_req_nterror(req,
+						   NT_STATUS_NONE_MAPPED);
+			} else {
+				tevent_req_done(req);
+			}
+			return tevent_req_post(req, ev);
+		}
+	}
+
+	state->dom_name = NULL;
+
+	for (domain = domain_list(); domain != NULL; domain = domain->next) {
+		if (domain->have_idmap_config
+		    && (uid >= domain->id_range_low)
+		    && (uid <= domain->id_range_high)) {
+			state->dom_name = domain->name;
+			break;
+		}
+	}
+
+	child = idmap_child();
+
+	subreq = rpccli_wbint_Uid2Sid_send(
+		state, ev, child->rpccli, state->dom_name,
+		uid, &state->sid);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, wb_uid2sid_done, req);
+	return req;
+}
+
+static void wb_uid2sid_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct wb_uid2sid_state *state = tevent_req_data(
+		req, struct wb_uid2sid_state);
+	NTSTATUS status, result;
+
+	status = rpccli_wbint_Uid2Sid_recv(subreq, state, &result);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		tevent_req_nterror(req, status);
+		return;
+	}
+	if (!NT_STATUS_IS_OK(result)) {
+		tevent_req_nterror(req, result);
+		return;
+	}
+	tevent_req_done(req);
+}
+
+NTSTATUS wb_uid2sid_recv(struct tevent_req *req, struct dom_sid *sid)
+{
+	struct wb_uid2sid_state *state = tevent_req_data(
+		req, struct wb_uid2sid_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+	sid_copy(sid, &state->sid);
+	return NT_STATUS_OK;
+}