Merge branch 'master' of ssh://git.samba.org/data/git/samba

1 files changed, 135 insertions, 0 deletions

diff --git a/libcli/nbt/namerelease.c b/libcli/nbt/namerelease.c
new file mode 100644
index 0000000000..e57a2f396e
--- /dev/null
+++ b/libcli/nbt/namerelease.c
@@ -0,0 +1,135 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   send out a name release request
+
+   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 "../libcli/nbt/libnbt.h"
+#include "../libcli/nbt/nbt_proto.h"
+#include "lib/socket/socket.h"
+#include "param/param.h"
+
+/*
+  send a nbt name release request
+*/
+_PUBLIC_ struct nbt_name_request *nbt_name_release_send(struct nbt_name_socket *nbtsock,
+					       struct nbt_name_release *io)
+{
+	struct nbt_name_request *req;
+	struct nbt_name_packet *packet;
+	struct socket_address *dest;
+
+	packet = talloc_zero(nbtsock, struct nbt_name_packet);
+	if (packet == NULL) return NULL;
+
+	packet->qdcount = 1;
+	packet->arcount = 1;
+	packet->operation = NBT_OPCODE_RELEASE;
+	if (io->in.broadcast) {
+		packet->operation |= NBT_FLAG_BROADCAST;
+	}
+
+	packet->questions = talloc_array(packet, struct nbt_name_question, 1);
+	if (packet->questions == NULL) goto failed;
+
+	packet->questions[0].name           = io->in.name;
+	packet->questions[0].question_type  = NBT_QTYPE_NETBIOS;
+	packet->questions[0].question_class = NBT_QCLASS_IP;
+
+	packet->additional = talloc_array(packet, struct nbt_res_rec, 1);
+	if (packet->additional == NULL) goto failed;
+
+	packet->additional[0].name                   = io->in.name;
+	packet->additional[0].rr_type                = NBT_QTYPE_NETBIOS;
+	packet->additional[0].rr_class               = NBT_QCLASS_IP;
+	packet->additional[0].ttl                    = 0;
+	packet->additional[0].rdata.netbios.length   = 6;
+	packet->additional[0].rdata.netbios.addresses = talloc_array(packet->additional,
+								     struct nbt_rdata_address, 1);
+	if (packet->additional[0].rdata.netbios.addresses == NULL) goto failed;
+	packet->additional[0].rdata.netbios.addresses[0].nb_flags = io->in.nb_flags;
+	packet->additional[0].rdata.netbios.addresses[0].ipaddr =
+		talloc_strdup(packet->additional, io->in.address);
+
+	dest = socket_address_from_strings(packet, nbtsock->sock->backend_name,
+					   io->in.dest_addr, io->in.dest_port);
+	if (dest == NULL) goto failed;
+	req = nbt_name_request_send(nbtsock, dest, packet,
+				    io->in.timeout, io->in.retries, false);
+	if (req == NULL) goto failed;
+
+	talloc_free(packet);
+	return req;
+
+failed:
+	talloc_free(packet);
+	return NULL;
+}
+
+/*
+  wait for a release reply
+*/
+_PUBLIC_ NTSTATUS nbt_name_release_recv(struct nbt_name_request *req,
+			       TALLOC_CTX *mem_ctx, struct nbt_name_release *io)
+{
+	NTSTATUS status;
+	struct nbt_name_packet *packet;
+
+	status = nbt_name_request_recv(req);
+	if (!NT_STATUS_IS_OK(status) ||
+	    req->num_replies == 0) {
+		talloc_free(req);
+		return status;
+	}
+
+	packet = req->replies[0].packet;
+	io->out.reply_from = talloc_steal(mem_ctx, req->replies[0].dest->addr);
+
+	if (packet->ancount != 1 ||
+	    packet->answers[0].rr_type != NBT_QTYPE_NETBIOS ||
+	    packet->answers[0].rr_class != NBT_QCLASS_IP) {
+		talloc_free(req);
+		return NT_STATUS_INVALID_NETWORK_RESPONSE;
+	}
+
+	io->out.rcode = packet->operation & NBT_RCODE;
+	io->out.name = packet->answers[0].name;
+	if (packet->answers[0].rdata.netbios.length < 6) {
+		talloc_free(req);
+		return NT_STATUS_INVALID_NETWORK_RESPONSE;
+	}
+	io->out.reply_addr = talloc_steal(mem_ctx,
+					  packet->answers[0].rdata.netbios.addresses[0].ipaddr);
+	talloc_steal(mem_ctx, io->out.name.name);
+	talloc_steal(mem_ctx, io->out.name.scope);
+
+	talloc_free(req);
+
+	return NT_STATUS_OK;
+}
+
+/*
+  synchronous name release request
+*/
+_PUBLIC_ NTSTATUS nbt_name_release(struct nbt_name_socket *nbtsock,
+			   TALLOC_CTX *mem_ctx, struct nbt_name_release *io)
+{
+	struct nbt_name_request *req = nbt_name_release_send(nbtsock, io);
+	return nbt_name_release_recv(req, mem_ctx, io);
+}