1 files changed, 102 insertions, 0 deletions
diff --git a/source4/nbt_server/query.c b/source4/nbt_server/query.c
new file mode 100644
index 0000000..7e1a760
--- /dev/null
+++ b/source4/nbt_server/query.c
@@ -0,0 +1,102 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   answer name queries
+
+   Copyright (C) Andrew Tridgell	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 "../lib/util/dlinklist.h"
+#include "system/network.h"
+#include "nbt_server/nbt_server.h"
+#include "nbt_server/wins/winsserver.h"
+#include "samba/service_task.h"
+#include "librpc/gen_ndr/ndr_nbt.h"
+#include "lib/socket/socket.h"
+#include "param/param.h"
+
+/*
+  answer a name query
+*/
+void nbtd_request_query(struct nbt_name_socket *nbtsock, 
+			struct nbt_name_packet *packet, 
+			struct socket_address *src)
+{
+	struct nbtd_iface_name *iname;
+	struct nbt_name *name;
+	struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private_data,
+						       struct nbtd_interface);
+
+	/* see if its a node status query */
+	if (packet->qdcount == 1 &&
+	    packet->questions[0].question_type == NBT_QTYPE_STATUS) {
+		nbtd_query_status(nbtsock, packet, src);
+		return;
+	}
+
+	NBTD_ASSERT_PACKET(packet, src, packet->qdcount == 1);
+	NBTD_ASSERT_PACKET(packet, src, 
+			   packet->questions[0].question_type == NBT_QTYPE_NETBIOS);
+	NBTD_ASSERT_PACKET(packet, src, 
+			   packet->questions[0].question_class == NBT_QCLASS_IP);
+
+	/* see if we have the requested name on this interface */
+	name = &packet->questions[0].name;
+
+	iname = nbtd_find_iname(iface, name, 0);
+	if (iname == NULL) {
+		/* don't send negative replies to broadcast queries */
+		if (packet->operation & NBT_FLAG_BROADCAST) {
+			return;
+		}
+
+		if (packet->operation & NBT_FLAG_RECURSION_DESIRED) {
+			nbtd_winsserver_request(nbtsock, packet, src);
+			return;
+		}
+
+		/* otherwise send a negative reply */
+		nbtd_negative_name_query_reply(nbtsock, packet, src);
+		return;
+	}
+
+	/*
+	 * normally we should forward all queries with the
+	 * recursion desired flag to the wins server, but this
+	 * breaks are winsclient code, when doing mhomed registrations
+	 */
+	if (!(packet->operation & NBT_FLAG_BROADCAST) &&
+	   (packet->operation & NBT_FLAG_RECURSION_DESIRED) &&
+	   (iname->nb_flags & NBT_NM_GROUP) &&
+	   lpcfg_we_are_a_wins_server(iface->nbtsrv->task->lp_ctx)) {
+		nbtd_winsserver_request(nbtsock, packet, src);
+		return;
+	}
+
+	/* if the name is not yet active and its a broadcast query then
+	   ignore it for now */
+	if (!(iname->nb_flags & NBT_NM_ACTIVE) && 
+	    (packet->operation & NBT_FLAG_BROADCAST)) {
+		DEBUG(7,("Query for %s from %s - name not active yet on %s\n",
+			 nbt_name_string(packet, name), src->addr, iface->ip_address));
+		return;
+	}
+
+	nbtd_name_query_reply(nbtsock, packet, src,
+			      &iname->name, iname->ttl, iname->nb_flags, 
+			      nbtd_address_list(iface, packet));
+}