r25026: Move param/param.h out of includes.h
[gd/samba-autobuild/.git] / source4 / libcli / nbt / namerelease.c
1 /* 
2    Unix SMB/CIFS implementation.
3
4    send out a name release request
5
6    Copyright (C) Andrew Tridgell 2005
7    
8    This program is free software; you can redistribute it and/or modify
9    it under the terms of the GNU General Public License as published by
10    the Free Software Foundation; either version 3 of the License, or
11    (at your option) any later version.
12    
13    This program is distributed in the hope that it will be useful,
14    but WITHOUT ANY WARRANTY; without even the implied warranty of
15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16    GNU General Public License for more details.
17    
18    You should have received a copy of the GNU General Public License
19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
20 */
21
22 #include "includes.h"
23 #include "libcli/nbt/libnbt.h"
24 #include "lib/socket/socket.h"
25 #include "param/param.h"
26
27 /*
28   send a nbt name release request
29 */
30 struct nbt_name_request *nbt_name_release_send(struct nbt_name_socket *nbtsock,
31                                                struct nbt_name_release *io)
32 {
33         struct nbt_name_request *req;
34         struct nbt_name_packet *packet;
35         struct socket_address *dest;
36
37         packet = talloc_zero(nbtsock, struct nbt_name_packet);
38         if (packet == NULL) return NULL;
39
40         packet->qdcount = 1;
41         packet->arcount = 1;
42         packet->operation = NBT_OPCODE_RELEASE;
43         if (io->in.broadcast) {
44                 packet->operation |= NBT_FLAG_BROADCAST;
45         }
46
47         packet->questions = talloc_array(packet, struct nbt_name_question, 1);
48         if (packet->questions == NULL) goto failed;
49
50         packet->questions[0].name           = io->in.name;
51         packet->questions[0].question_type  = NBT_QTYPE_NETBIOS;
52         packet->questions[0].question_class = NBT_QCLASS_IP;
53
54         packet->additional = talloc_array(packet, struct nbt_res_rec, 1);
55         if (packet->additional == NULL) goto failed;
56
57         packet->additional[0].name                   = io->in.name;
58         packet->additional[0].rr_type                = NBT_QTYPE_NETBIOS;
59         packet->additional[0].rr_class               = NBT_QCLASS_IP;
60         packet->additional[0].ttl                    = 0;
61         packet->additional[0].rdata.netbios.length   = 6;
62         packet->additional[0].rdata.netbios.addresses = talloc_array(packet->additional,
63                                                                      struct nbt_rdata_address, 1);
64         if (packet->additional[0].rdata.netbios.addresses == NULL) goto failed;
65         packet->additional[0].rdata.netbios.addresses[0].nb_flags = io->in.nb_flags;
66         packet->additional[0].rdata.netbios.addresses[0].ipaddr = 
67                 talloc_strdup(packet->additional, io->in.address);
68
69         dest = socket_address_from_strings(packet, nbtsock->sock->backend_name, 
70                                            io->in.dest_addr, lp_nbt_port());
71         if (dest == NULL) goto failed;
72         req = nbt_name_request_send(nbtsock, dest, packet,
73                                     io->in.timeout, io->in.retries, False);
74         if (req == NULL) goto failed;
75
76         talloc_free(packet);
77         return req;
78
79 failed:
80         talloc_free(packet);
81         return NULL;    
82 }
83
84 /*
85   wait for a release reply
86 */
87 NTSTATUS nbt_name_release_recv(struct nbt_name_request *req, 
88                                TALLOC_CTX *mem_ctx, struct nbt_name_release *io)
89 {
90         NTSTATUS status;
91         struct nbt_name_packet *packet;
92
93         status = nbt_name_request_recv(req);
94         if (!NT_STATUS_IS_OK(status) ||
95             req->num_replies == 0) {
96                 talloc_free(req);
97                 return status;
98         }
99         
100         packet = req->replies[0].packet;
101         io->out.reply_from = talloc_steal(mem_ctx, req->replies[0].dest->addr);
102
103         if (packet->ancount != 1 ||
104             packet->answers[0].rr_type != NBT_QTYPE_NETBIOS ||
105             packet->answers[0].rr_class != NBT_QCLASS_IP) {
106                 talloc_free(req);
107                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
108         }
109
110         io->out.rcode = packet->operation & NBT_RCODE;
111         io->out.name = packet->answers[0].name;
112         if (packet->answers[0].rdata.netbios.length < 6) {
113                 talloc_free(req);
114                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
115         }
116         io->out.reply_addr = talloc_steal(mem_ctx, 
117                                           packet->answers[0].rdata.netbios.addresses[0].ipaddr);
118         talloc_steal(mem_ctx, io->out.name.name);
119         talloc_steal(mem_ctx, io->out.name.scope);
120
121         talloc_free(req);
122
123         return NT_STATUS_OK;
124 }
125
126 /*
127   synchronous name release request
128 */
129 NTSTATUS nbt_name_release(struct nbt_name_socket *nbtsock, 
130                            TALLOC_CTX *mem_ctx, struct nbt_name_release *io)
131 {
132         struct nbt_name_request *req = nbt_name_release_send(nbtsock, io);
133         return nbt_name_release_recv(req, mem_ctx, io);
134 }