s3:winbind: Add async wb_lookupsid

1 files changed, 132 insertions, 0 deletions

diff --git a/source3/winbindd/wb_lookupsid.c b/source3/winbindd/wb_lookupsid.c
new file mode 100644
index 0000000000..f258828048
--- /dev/null
+++ b/source3/winbindd/wb_lookupsid.c
@@ -0,0 +1,132 @@
+/*
+   Unix SMB/CIFS implementation.
+   async lookupsid
+   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_lookupsid_state {
+	struct tevent_context *ev;
+	struct winbindd_domain *lookup_domain;
+	struct dom_sid sid;
+	enum lsa_SidType type;
+	const char *domname;
+	const char *name;
+};
+
+static void wb_lookupsid_done(struct tevent_req *subreq);
+
+struct tevent_req *wb_lookupsid_send(TALLOC_CTX *mem_ctx,
+				     struct tevent_context *ev,
+				     const struct dom_sid *sid)
+{
+	struct tevent_req *req, *subreq;
+	struct wb_lookupsid_state *state;
+	char *dom_name, *name;
+	NTSTATUS status;
+
+	req = tevent_req_create(mem_ctx, &state, struct wb_lookupsid_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	sid_copy(&state->sid, sid);
+	state->ev = ev;
+
+	state->lookup_domain = find_lookup_domain_from_sid(sid);
+	if (state->lookup_domain == NULL) {
+		DEBUG(5, ("Could not find domain for sid %s\n",
+			  sid_string_dbg(sid)));
+		tevent_req_nterror(req, NT_STATUS_NONE_MAPPED);
+		return tevent_req_post(req, ev);
+	}
+
+	status = wcache_sid_to_name(state->lookup_domain, sid, state,
+				    &dom_name, &name, &state->type);
+	if (NT_STATUS_IS_OK(status)) {
+		state->domname = dom_name;
+		state->name = name;
+		tevent_req_done(req);
+		return tevent_req_post(req, ev);
+	}
+
+	subreq = rpccli_wbint_LookupSid_send(
+		state, ev, state->lookup_domain->child.rpccli,
+		&state->sid, &state->type, &state->domname, &state->name);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, wb_lookupsid_done, req);
+	return req;
+}
+
+static void wb_lookupsid_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct wb_lookupsid_state *state = tevent_req_data(
+		req, struct wb_lookupsid_state);
+	struct winbindd_domain *forest_root;
+	NTSTATUS status, result;
+
+	status = rpccli_wbint_LookupSid_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_done(req);
+		return;
+	}
+
+	/*
+	 * Let's try the forest root
+	 */
+	forest_root = find_root_domain();
+	if ((forest_root == NULL) || (forest_root == state->lookup_domain)) {
+		tevent_req_nterror(req, result);
+		return;
+	}
+	state->lookup_domain = forest_root;
+
+	subreq = rpccli_wbint_LookupSid_send(
+		state, state->ev, state->lookup_domain->child.rpccli,
+		&state->sid, &state->type, &state->domname, &state->name);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, wb_lookupsid_done, req);
+}
+
+NTSTATUS wb_lookupsid_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
+			   enum lsa_SidType *type, const char **domain,
+			   const char **name)
+{
+	struct wb_lookupsid_state *state = tevent_req_data(
+		req, struct wb_lookupsid_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+	*type = state->type;
+	*domain = talloc_move(mem_ctx, &state->domname);
+	*name = talloc_move(mem_ctx, &state->name);
+	return NT_STATUS_OK;
+}