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
|
/*
Unix SMB/CIFS implementation.
SMB2 client session handling
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/raw/libcliraw.h"
#include "libcli/smb2/smb2.h"
#include "libcli/smb2/smb2_calls.h"
/*
initialise a smb2_session structure
*/
struct smb2_session *smb2_session_init(struct smb2_transport *transport,
TALLOC_CTX *parent_ctx, BOOL primary)
{
struct smb2_session *session;
NTSTATUS status;
session = talloc_zero(parent_ctx, struct smb2_session);
if (!session) {
return NULL;
}
if (primary) {
session->transport = talloc_steal(session, transport);
} else {
session->transport = talloc_reference(session, transport);
}
/* prepare a gensec context for later use */
status = gensec_client_start(session, &session->gensec,
session->transport->socket->event.ctx);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(session);
return NULL;
}
return session;
}
/*
send a session setup request
*/
struct smb2_request *smb2_session_setup_send(struct smb2_session *session,
struct smb2_session_setup *io)
{
struct smb2_request *req;
NTSTATUS status;
req = smb2_request_init(session->transport, SMB2_OP_SESSSETUP,
0x10 + io->in.secblob.length);
if (req == NULL) return NULL;
SBVAL(req->out.hdr, SMB2_HDR_UID, session->uid);
SIVAL(req->out.body, 0x00, io->in.unknown1);
SIVAL(req->out.body, 0x04, io->in.unknown2);
SIVAL(req->out.body, 0x08, io->in.unknown3);
status = smb2_push_ofs_blob(req, req->out.body+0x0C, io->in.secblob);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(req);
return NULL;
}
smb2_transport_send(req);
return req;
}
/*
recv a session setup reply
*/
NTSTATUS smb2_session_setup_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx,
struct smb2_session_setup *io)
{
NTSTATUS status;
if (!smb2_request_receive(req) ||
(smb2_request_is_error(req) &&
!NT_STATUS_EQUAL(req->status, NT_STATUS_MORE_PROCESSING_REQUIRED))) {
return smb2_request_destroy(req);
}
if (req->in.body_size < 0x08) {
return NT_STATUS_BUFFER_TOO_SMALL;
}
io->out.unknown1 = IVAL(req->in.body, 0x00);
io->out.uid = BVAL(req->in.hdr, SMB2_HDR_UID);
status = smb2_pull_ofs_blob(req, req->in.body+0x04, &io->out.secblob);
if (!NT_STATUS_IS_OK(status)) {
smb2_request_destroy(req);
return status;
}
talloc_steal(mem_ctx, io->out.secblob.data);
return smb2_request_destroy(req);
}
/*
sync session setup request
*/
NTSTATUS smb2_session_setup(struct smb2_session *session,
TALLOC_CTX *mem_ctx, struct smb2_session_setup *io)
{
struct smb2_request *req = smb2_session_setup_send(session, io);
return smb2_session_setup_recv(req, mem_ctx, io);
}
|
