1 files changed, 99 insertions, 0 deletions
diff --git a/source4/nbt_server/wins/wins_dns_proxy.c b/source4/nbt_server/wins/wins_dns_proxy.c
new file mode 100644
index 0000000..95ceb21
--- /dev/null
+++ b/source4/nbt_server/wins/wins_dns_proxy.c
@@ -0,0 +1,99 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   wins server dns proxy
+
+   Copyright (C) Stefan Metzmacher	2005
+      
+   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 "nbt_server/nbt_server.h"
+#include "nbt_server/wins/winsdb.h"
+#include "nbt_server/wins/winsserver.h"
+#include "system/time.h"
+#include "libcli/composite/composite.h"
+#include "samba/service_task.h"
+#include "libcli/resolve/resolve.h"
+#include "lib/socket/socket.h"
+
+struct wins_dns_proxy_state {
+	struct nbt_name_socket *nbtsock;
+	struct nbt_name_packet *packet;
+	struct socket_address *src;
+};
+
+static void nbtd_wins_dns_proxy_handler(struct composite_context *creq)
+{
+	NTSTATUS status;
+	struct wins_dns_proxy_state *s = talloc_get_type(creq->async.private_data,
+							 struct wins_dns_proxy_state);
+	struct nbt_name *name = &s->packet->questions[0].name;
+	const char *address;
+	const char **addresses;
+	uint16_t nb_flags = 0; /* TODO: ... */
+
+	status = resolve_name_recv(creq, s->packet, &address);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto notfound;
+	}
+
+	addresses = str_list_add(NULL, address);
+	talloc_steal(s->packet, addresses);
+	if (!addresses) goto notfound;
+
+	nbtd_name_query_reply(s->nbtsock, s->packet, s->src, name, 
+			      0, nb_flags, addresses);
+	return;
+notfound:
+	nbtd_negative_name_query_reply(s->nbtsock, s->packet, s->src);
+}
+
+/*
+  dns proxy query a name
+*/
+void nbtd_wins_dns_proxy_query(struct nbt_name_socket *nbtsock, 
+			       struct nbt_name_packet *packet, 
+			       struct socket_address *src)
+{
+	struct nbt_name *name = &packet->questions[0].name;
+	struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private_data,
+						       struct nbtd_interface);
+	struct wins_dns_proxy_state *s;
+	struct composite_context *creq;
+	struct resolve_context *resolve_ctx;
+
+	s = talloc(nbtsock, struct wins_dns_proxy_state);
+	if (!s) goto failed;
+	s->nbtsock	= nbtsock;
+	s->packet	= talloc_steal(s, packet);
+	s->src		= socket_address_copy(s, src);
+	if (s->src == NULL) {
+		goto failed;
+	}
+
+	resolve_ctx = resolve_context_init(s);
+	if (resolve_ctx == NULL) goto failed;
+	resolve_context_add_host_method(resolve_ctx);
+
+	creq = resolve_name_send(resolve_ctx, s, name, iface->nbtsrv->task->event_ctx);
+	if (!creq) goto failed;
+
+	creq->async.fn		= nbtd_wins_dns_proxy_handler;
+	creq->async.private_data= s;
+	return;
+failed:
+	nbtd_negative_name_query_reply(nbtsock, packet, src);
+}