r5294: - added a separate NBT-WINS test for WINS operations (register, refresh, release and query)

- change the iface_n_*() functions to return a "const char *" instead of a "struct ipv4_addr"
  I think that in general we should move towards "const char *" for
  all IP addresses, as this makes IPv6 much easier, and is also easier
  to debug. Andrew, when you get a chance, could you fix some of the
  auth code to use strings for IPs ?

- return a NTSTATUS error on bad name queries and node status instead
  of using rcode. This makes the calling code simpler.

- added low level name release code in libcli/nbt/

- use a real IP in the register and wins nbt torture tests, as w2k3
  WINS server silently rejects some operations that don't come from the
  IP being used (eg. it says "yes" to a release, but does not in fact
  release the name)
(This used to be commit bb1ab11d8e0ea0bd9ae34aebeb565d36fe4b495f)

3 files changed, 160 insertions, 5 deletions

diff --git a/source4/libcli/nbt/libnbt.h b/source4/libcli/nbt/libnbt.h
index 63711490fe..5a53510ccf 100644
--- a/source4/libcli/nbt/libnbt.h
+++ b/source4/libcli/nbt/libnbt.h
@@ -138,7 +138,6 @@ struct nbt_name_query {
 		struct nbt_name name;
 		int16_t num_addrs;
 		const char **reply_addrs;
-		uint8_t rcode;
 	} out;
 };
 
@@ -154,7 +153,6 @@ struct nbt_name_status {
 		const char *reply_from;
 		struct nbt_name name;
 		struct nbt_rdata_status status;
-		uint8_t rcode;
 	} out;
 };
 
@@ -247,3 +245,21 @@ struct nbt_name_refresh_wins {
 };
 
 
+/* a name release request */
+struct nbt_name_release {
+	struct {
+		struct nbt_name name;
+		const char *dest_addr;
+		const char *address;
+		uint16_t nb_flags;
+		BOOL broadcast;
+		int timeout; /* in seconds */
+		int retries;
+	} in;
+	struct {
+		const char *reply_from;
+		struct nbt_name name;
+		const char *reply_addr;
+		uint8_t rcode;
+	} out;
+};
diff --git a/source4/libcli/nbt/namequery.c b/source4/libcli/nbt/namequery.c
index 32fcad2052..5907c45b87 100644
--- a/source4/libcli/nbt/namequery.c
+++ b/source4/libcli/nbt/namequery.c
@@ -84,14 +84,19 @@ NTSTATUS nbt_name_query_recv(struct nbt_name_request *req,
 	packet = req->replies[0].packet;
 	io->out.reply_from = talloc_steal(mem_ctx, req->replies[0].reply_addr);
 
+	if ((packet->operation & NBT_RCODE) != 0) {
+		status = nbt_rcode_to_ntstatus(packet->operation & NBT_RCODE);
+		talloc_free(req);
+		return status;
+	}
+
 	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;
+		return status;
 	}
 
-	io->out.rcode = packet->operation & NBT_RCODE;
 	io->out.name = packet->answers[0].name;
 	io->out.num_addrs = packet->answers[0].rdata.netbios.length / 6;
 	io->out.reply_addrs = talloc_array(mem_ctx, const char *, io->out.num_addrs);
@@ -178,6 +183,12 @@ NTSTATUS nbt_name_status_recv(struct nbt_name_request *req,
 	packet = req->replies[0].packet;
 	io->out.reply_from = talloc_steal(mem_ctx, req->replies[0].reply_addr);
 
+	if ((packet->operation & NBT_RCODE) != 0) {
+		status = nbt_rcode_to_ntstatus(packet->operation & NBT_RCODE);
+		talloc_free(req);
+		return status;
+	}
+
 	if (packet->ancount != 1 ||
 	    packet->answers[0].rr_type != NBT_QTYPE_STATUS ||
 	    packet->answers[0].rr_class != NBT_QCLASS_IP) {
@@ -185,7 +196,6 @@ NTSTATUS nbt_name_status_recv(struct nbt_name_request *req,
 		return NT_STATUS_INVALID_NETWORK_RESPONSE;
 	}
 
-	io->out.rcode = packet->operation & NBT_RCODE;
 	io->out.name = packet->answers[0].name;
 	talloc_steal(mem_ctx, io->out.name.name);
 	talloc_steal(mem_ctx, io->out.name.scope);
diff --git a/source4/libcli/nbt/namerelease.c b/source4/libcli/nbt/namerelease.c
new file mode 100644
index 0000000000..208c73d386
--- /dev/null
+++ b/source4/libcli/nbt/namerelease.c
@@ -0,0 +1,129 @@
+/* 
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "libcli/nbt/libnbt.h"
+
+/*
+  send a nbt name release request
+*/
+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;
+
+	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);
+	
+	req = nbt_name_request_send(nbtsock, io->in.dest_addr, lp_nbt_port(), 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
+*/
+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].reply_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
+*/
+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);
+}