s3:winbind: Add async wb_lookupsid

3 files changed, 163 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;
+}
diff --git a/source3/winbindd/winbindd_dual_srv.c b/source3/winbindd/winbindd_dual_srv.c
index 5d2d7f389d..b4e18c82c1 100644
--- a/source3/winbindd/winbindd_dual_srv.c
+++ b/source3/winbindd/winbindd_dual_srv.c
@@ -28,3 +28,27 @@ void _wbint_Ping(pipes_struct *p, struct wbint_Ping *r)
 {
 	*r->out.out_data = r->in.in_data;
 }
+
+NTSTATUS _wbint_LookupSid(pipes_struct *p, struct wbint_LookupSid *r)
+{
+	struct winbindd_domain *domain = wb_child_domain();
+	char *dom_name;
+	char *name;
+	enum lsa_SidType type;
+	NTSTATUS status;
+
+	if (domain == NULL) {
+		return NT_STATUS_REQUEST_NOT_ACCEPTED;
+	}
+
+	status = domain->methods->sid_to_name(domain, p->mem_ctx, r->in.sid,
+					      &dom_name, &name, &type);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	*r->out.domain = dom_name;
+	*r->out.name = name;
+	*r->out.type = type;
+	return NT_STATUS_OK;
+}
diff --git a/source3/winbindd/winbindd_proto.h b/source3/winbindd/winbindd_proto.h
index 182534a1fa..172e143ba0 100644
--- a/source3/winbindd/winbindd_proto.h
+++ b/source3/winbindd/winbindd_proto.h
@@ -606,4 +606,11 @@ struct rpc_pipe_client *wbint_rpccli_create(TALLOC_CTX *mem_ctx,
 enum winbindd_result winbindd_dual_ndrcmd(struct winbindd_domain *domain,
 					  struct winbindd_cli_state *state);
 
+struct tevent_req *wb_lookupsid_send(TALLOC_CTX *mem_ctx,
+				     struct tevent_context *ev,
+				     const struct dom_sid *sid);
+NTSTATUS wb_lookupsid_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
+			   enum lsa_SidType *type, const char **domain,
+			   const char **name);
+
 #endif /*  _WINBINDD_PROTO_H_  */