Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 182 insertions, 0 deletions

diff --git a/source4/nbt_server/nodestatus.c b/source4/nbt_server/nodestatus.c
new file mode 100644
index 0000000..e26cda7
--- /dev/null
+++ b/source4/nbt_server/nodestatus.c
@@ -0,0 +1,182 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   answer node status 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 "lib/socket/socket.h"
+#include "librpc/gen_ndr/ndr_nbt.h"
+
+struct nbt_name_packet *nbtd_node_status_reply_packet(
+	TALLOC_CTX *mem_ctx,
+	uint16_t trn_id,
+	const struct nbt_name *name,
+	struct nbtd_interface *iface)
+{
+	struct nbtd_iface_name *iname;
+	struct nbt_name_packet *packet;
+	struct nbt_res_rec *answer;
+	struct nbt_rdata_status *stat;
+	uint32_t num_names;
+	NTSTATUS status;
+
+	num_names = 0;
+	for (iname = iface->names; iname != NULL; iname = iname->next) {
+		if ((iname->nb_flags & NBT_NM_ACTIVE) == 0) {
+			continue;
+		}
+		if (strcmp(iname->name.name, "*") == 0) {
+			continue;
+		}
+		num_names += 1;
+	}
+
+	packet = talloc_zero(mem_ctx, struct nbt_name_packet);
+	if (packet == NULL) {
+		return NULL;
+	}
+
+	packet->name_trn_id = trn_id;
+	packet->ancount = 1;
+	packet->operation =
+		NBT_OPCODE_QUERY |
+		NBT_FLAG_REPLY |
+		NBT_FLAG_AUTHORITATIVE;
+
+	packet->answers = talloc_array(packet, struct nbt_res_rec, 1);
+	if (packet->answers == NULL) {
+		goto failed;
+	}
+
+	answer = &packet->answers[0];
+
+	status = nbt_name_dup(packet->answers, name, &answer->name);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto failed;
+	}
+
+	answer->rr_type  = NBT_QTYPE_STATUS;
+	answer->rr_class = NBT_QCLASS_IP;
+	answer->ttl      = 0;
+
+	stat = &packet->answers[0].rdata.status;
+
+	stat->num_names = num_names;
+	stat->names = talloc_zero_array(
+		packet->answers,
+		struct nbt_status_name,
+		num_names);
+	if (stat->names == NULL) {
+		goto failed;
+	}
+
+	num_names = 0;
+	for (iname = iface->names; iname != NULL; iname = iname->next) {
+		struct nbt_status_name *n = &stat->names[num_names];
+
+		if ((iname->nb_flags & NBT_NM_ACTIVE) == 0) {
+			continue;
+		}
+		if (strcmp(iname->name.name, "*") == 0) {
+			continue;
+		}
+
+		n->name = talloc_asprintf(
+			stat->names,
+			"%-15s",
+			iname->name.name);
+		if (n->name == NULL) {
+			goto failed;
+		}
+		n->type = iname->name.type;
+		n->nb_flags = iname->nb_flags;
+
+		num_names += 1;
+	}
+
+	return packet;
+
+failed:
+	TALLOC_FREE(packet);
+	return NULL;
+}
+
+/*
+  send a name status reply
+*/
+static void nbtd_node_status_reply(struct nbt_name_socket *nbtsock, 
+				   struct nbt_name_packet *request_packet, 
+				   struct socket_address *src,
+				   struct nbt_name *name, 
+				   struct nbtd_interface *iface)
+{
+	struct nbt_name_packet *packet;
+	struct nbtd_server *nbtsrv = iface->nbtsrv;
+
+	packet = nbtd_node_status_reply_packet(
+		nbtsock,
+		request_packet->name_trn_id,
+		name,
+		iface);
+	if (packet == NULL) {
+		return;
+	}
+
+	DEBUG(7,("Sending node status reply for %s to %s:%d\n", 
+		 nbt_name_string(packet, name), src->addr, src->port));
+	
+	nbtsrv->stats.total_sent++;
+	nbt_name_reply_send(nbtsock, src, packet);
+
+	talloc_free(packet);
+}
+
+
+/*
+  answer a node status query
+*/
+void nbtd_query_status(struct nbt_name_socket *nbtsock, 
+		       struct nbt_name_packet *packet, 
+		       struct socket_address *src)
+{
+	struct nbt_name *name;
+	struct nbtd_iface_name *iname;
+	struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private_data,
+						       struct nbtd_interface);
+
+	NBTD_ASSERT_PACKET(packet, src, packet->qdcount == 1);
+	NBTD_ASSERT_PACKET(packet, src, packet->questions[0].question_type == NBT_QTYPE_STATUS);
+	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, NBT_NM_ACTIVE);
+	if (iname == NULL) {
+		DEBUG(7,("Node status query for %s from %s - not found on %s\n",
+			 nbt_name_string(packet, name), src->addr, iface->ip_address));
+		return;
+	}
+
+	nbtd_node_status_reply(nbtsock, packet, src, 
+			       &iname->name, iface);
+}