From 15312e7310b63fbb22db319f201a8ce4f667ea62 Mon Sep 17 00:00:00 2001
From: Volker Lendecke <vl@samba.org>
Date: Wed, 26 Aug 2009 11:33:16 +0200
Subject: [PATCH] s3:winbind: Add async wb_dsgetdcname

---
 source3/Makefile.in               |   1 +
 source3/winbindd/wb_dsgetdcname.c | 115 ++++++++++++++++++++++++++++++
 source3/winbindd/winbindd_proto.h |   9 +++
 3 files changed, 125 insertions(+)
 create mode 100644 source3/winbindd/wb_dsgetdcname.c

diff --git a/source3/Makefile.in b/source3/Makefile.in
index 7a07350876a..221b965cab4 100644
--- a/source3/Makefile.in
+++ b/source3/Makefile.in
@@ -1182,6 +1182,7 @@ WINBINDD_OBJ1 = \
 		winbindd/wb_query_user_list.o \
 		winbindd/wb_fill_pwent.o \
 		winbindd/wb_next_pwent.o \
+		winbindd/wb_dsgetdcname.o \
 		winbindd/winbindd_lookupsid.o \
 		winbindd/winbindd_lookupname.o \
 		winbindd/winbindd_sid_to_uid.o \
diff --git a/source3/winbindd/wb_dsgetdcname.c b/source3/winbindd/wb_dsgetdcname.c
new file mode 100644
index 00000000000..994d14e2644
--- /dev/null
+++ b/source3/winbindd/wb_dsgetdcname.c
@@ -0,0 +1,115 @@
+/*
+   Unix SMB/CIFS implementation.
+   async dsgetdcname
+   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_dsgetdcname_state {
+	struct netr_DsRGetDCNameInfo *dcinfo;
+};
+
+static void wb_dsgetdcname_done(struct tevent_req *subreq);
+
+struct tevent_req *wb_dsgetdcname_send(TALLOC_CTX *mem_ctx,
+				       struct tevent_context *ev,
+				       const char *domain_name,
+				       const struct GUID *domain_guid,
+				       const char *site_name,
+				       uint32_t flags)
+{
+	struct tevent_req *req, *subreq;
+	struct wb_dsgetdcname_state *state;
+	struct winbindd_child *child;
+	struct GUID guid;
+	struct GUID *guid_ptr = NULL;
+
+	req = tevent_req_create(mem_ctx, &state, struct wb_dsgetdcname_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	if (strequal(domain_name, "BUILTIN")
+	    || strequal(domain_name, get_global_sam_name())) {
+		/*
+		 * Two options here: Give back our own address, or say there's
+		 * nobody around. Right now opting for the latter, one measure
+		 * to prevent the loopback connects. This might change if
+		 * needed.
+		 */
+		tevent_req_nterror(req, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND);
+		return tevent_req_post(req, ev);
+	}
+
+	if (IS_DC) {
+		/*
+		 * We have to figure out the DC ourselves
+		 */
+		child = locator_child();
+	} else {
+		struct winbindd_domain *domain = find_our_domain();
+		child = &domain->child;
+	}
+
+	if (domain_guid != NULL) {
+		/* work around a const issue in rpccli_ autogenerated code */
+		guid = *domain_guid;
+		guid_ptr = &guid;
+	}
+
+	subreq = rpccli_wbint_DsGetDcName_send(
+		state, ev, child->rpccli, domain_name, guid_ptr, site_name,
+		flags, &state->dcinfo);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, wb_dsgetdcname_done, req);
+	return req;
+}
+
+static void wb_dsgetdcname_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct wb_dsgetdcname_state *state = tevent_req_data(
+		req, struct wb_dsgetdcname_state);
+	NTSTATUS status, result;
+
+	status = rpccli_wbint_DsGetDcName_recv(subreq, state, &result);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		tevent_req_nterror(req, status);
+		return;
+	}
+	tevent_req_done(req);
+}
+
+NTSTATUS wb_dsgetdcname_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
+			     struct netr_DsRGetDCNameInfo **pdcinfo)
+{
+	struct wb_dsgetdcname_state *state = tevent_req_data(
+		req, struct wb_dsgetdcname_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+	*pdcinfo = talloc_move(mem_ctx, &state->dcinfo);
+	return NT_STATUS_OK;
+}
diff --git a/source3/winbindd/winbindd_proto.h b/source3/winbindd/winbindd_proto.h
index 59acdbb47e0..bf1e8a297d8 100644
--- a/source3/winbindd/winbindd_proto.h
+++ b/source3/winbindd/winbindd_proto.h
@@ -896,4 +896,13 @@ struct tevent_req *winbindd_dsgetdcname_send(TALLOC_CTX *mem_ctx,
 NTSTATUS winbindd_dsgetdcname_recv(struct tevent_req *req,
 				   struct winbindd_response *response);
 
+struct tevent_req *wb_dsgetdcname_send(TALLOC_CTX *mem_ctx,
+				       struct tevent_context *ev,
+				       const char *domain_name,
+				       const struct GUID *domain_guid,
+				       const char *site_name,
+				       uint32_t flags);
+NTSTATUS wb_dsgetdcname_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
+			     struct netr_DsRGetDCNameInfo **pdcinfo);
+
 #endif /*  _WINBINDD_PROTO_H_  */
-- 
2.34.1