1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/*
Unix SMB/CIFS implementation.
make nbt name query requests
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"
#include "system/network.h"
/*
send a nbt name query
*/
struct nbt_name_request *nbt_name_query_send(struct nbt_name_socket *nbtsock,
struct nbt_name_query *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->operation = NBT_OPCODE_QUERY;
if (io->in.broadcast) {
packet->operation |= NBT_FLAG_BROADCAST;
}
if (io->in.wins_lookup) {
packet->operation |= NBT_FLAG_RECURSION_DESIRED;
}
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;
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 name query reply
*/
NTSTATUS nbt_name_query_recv(struct nbt_name_request *req,
TALLOC_CTX *mem_ctx, struct nbt_name_query *io)
{
NTSTATUS status;
struct nbt_name_packet *packet;
int i;
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.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);
if (io->out.reply_addrs == NULL) {
talloc_free(req);
return NT_STATUS_NO_MEMORY;
}
for (i=0;i<io->out.num_addrs;i++) {
io->out.reply_addrs[i] = talloc_steal(mem_ctx,
packet->answers[0].rdata.netbios.addresses[i].ipaddr);
}
talloc_steal(mem_ctx, io->out.name.name);
talloc_steal(mem_ctx, io->out.name.scope);
talloc_free(req);
return NT_STATUS_OK;
}
/*
wait for a name query reply
*/
NTSTATUS nbt_name_query(struct nbt_name_socket *nbtsock,
TALLOC_CTX *mem_ctx, struct nbt_name_query *io)
{
struct nbt_name_request *req = nbt_name_query_send(nbtsock, io);
return nbt_name_query_recv(req, mem_ctx, io);
}
/*
send a nbt name status
*/
struct nbt_name_request *nbt_name_status_send(struct nbt_name_socket *nbtsock,
struct nbt_name_status *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->operation = NBT_OPCODE_QUERY;
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_STATUS;
packet->questions[0].question_class = NBT_QCLASS_IP;
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 name status reply
*/
NTSTATUS nbt_name_status_recv(struct nbt_name_request *req,
TALLOC_CTX *mem_ctx, struct nbt_name_status *io)
{
NTSTATUS status;
struct nbt_name_packet *packet;
int i;
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_STATUS ||
packet->answers[0].rr_class != NBT_QCLASS_IP) {
talloc_free(req);
return NT_STATUS_INVALID_NETWORK_RESPONSE;
}
io->out.name = packet->answers[0].name;
talloc_steal(mem_ctx, io->out.name.name);
talloc_steal(mem_ctx, io->out.name.scope);
io->out.status = packet->answers[0].rdata.status;
talloc_steal(mem_ctx, io->out.status.names);
for (i=0;i<io->out.status.num_names;i++) {
talloc_steal(io->out.status.names, io->out.status.names[i].name);
}
talloc_free(req);
return NT_STATUS_OK;
}
/*
wait for a name status reply
*/
NTSTATUS nbt_name_status(struct nbt_name_socket *nbtsock,
TALLOC_CTX *mem_ctx, struct nbt_name_status *io)
{
struct nbt_name_request *req = nbt_name_status_send(nbtsock, io);
return nbt_name_status_recv(req, mem_ctx, io);
}
|
