3 files changed, 136 insertions, 0 deletions

diff --git a/source3/winbindd/wb_gid2sid.c b/source3/winbindd/wb_gid2sid.c
new file mode 100644
index 0000000000..a0ae850ef8
--- /dev/null
+++ b/source3/winbindd/wb_gid2sid.c
@@ -0,0 +1,119 @@
+/*
+   Unix SMB/CIFS implementation.
+   async gid2sid
+   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_gid2sid_state {
+	struct tevent_context *ev;
+	char *dom_name;
+	struct dom_sid sid;
+};
+
+static void wb_gid2sid_done(struct tevent_req *subreq);
+
+struct tevent_req *wb_gid2sid_send(TALLOC_CTX *mem_ctx,
+				   struct tevent_context *ev,
+				   gid_t gid)
+{
+	struct tevent_req *req, *subreq;
+	struct wb_gid2sid_state *state;
+	struct winbindd_domain *domain;
+	struct winbindd_child *child;
+	bool expired;
+
+	req = tevent_req_create(mem_ctx, &state, struct wb_gid2sid_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	if (winbindd_use_idmap_cache()
+	    && idmap_cache_find_gid2sid(gid, &state->sid, &expired)) {
+
+		DEBUG(10, ("idmap_cache_find_gid2sid found %d%s\n",
+			   (int)gid, 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
+		    && (gid >= domain->id_range_low)
+		    && (gid <= domain->id_range_high)) {
+			state->dom_name = domain->name;
+			break;
+		}
+	}
+
+	child = idmap_child();
+
+	subreq = rpccli_wbint_Gid2Sid_send(
+		state, ev, child->rpccli, state->dom_name,
+		gid, &state->sid);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, wb_gid2sid_done, req);
+	return req;
+}
+
+static void wb_gid2sid_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct wb_gid2sid_state *state = tevent_req_data(
+		req, struct wb_gid2sid_state);
+	NTSTATUS status, result;
+
+	status = rpccli_wbint_Gid2Sid_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_gid2sid_recv(struct tevent_req *req, struct dom_sid *sid)
+{
+	struct wb_gid2sid_state *state = tevent_req_data(
+		req, struct wb_gid2sid_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+	sid_copy(sid, &state->sid);
+	return NT_STATUS_OK;
+}
diff --git a/source3/winbindd/winbindd_dual_srv.c b/source3/winbindd/winbindd_dual_srv.c
index bad9cd585a..35fecbd08e 100644
--- a/source3/winbindd/winbindd_dual_srv.c
+++ b/source3/winbindd/winbindd_dual_srv.c
@@ -105,3 +105,15 @@ NTSTATUS _wbint_Uid2Sid(pipes_struct *p, struct wbint_Uid2Sid *r)
 	}
 	return NT_STATUS_OK;
 }
+
+NTSTATUS _wbint_Gid2Sid(pipes_struct *p, struct wbint_Gid2Sid *r)
+{
+	NTSTATUS status;
+
+	status = idmap_gid_to_sid(r->in.dom_name ? r->in.dom_name : "",
+				  r->out.sid, r->in.gid);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+	return NT_STATUS_OK;
+}
diff --git a/source3/winbindd/winbindd_proto.h b/source3/winbindd/winbindd_proto.h
index f1fb7e0a87..d8bd984590 100644
--- a/source3/winbindd/winbindd_proto.h
+++ b/source3/winbindd/winbindd_proto.h
@@ -670,5 +670,10 @@ struct tevent_req *winbindd_uid_to_sid_send(TALLOC_CTX *mem_ctx,
 NTSTATUS winbindd_uid_to_sid_recv(struct tevent_req *req,
 				  struct winbindd_response *response);
 
+struct tevent_req *wb_gid2sid_send(TALLOC_CTX *mem_ctx,
+				   struct tevent_context *ev,
+				   gid_t gid);
+NTSTATUS wb_gid2sid_recv(struct tevent_req *req, struct dom_sid *sid);
+
 
 #endif /*  _WINBINDD_PROTO_H_  */