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
|
/*
Unix SMB/CIFS implementation.
SMB2 Lease context handling
Copyright (C) Stefan Metzmacher 2012
Copyright (C) Volker Lendecke 2013
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/smb/smb_common.h"
ssize_t smb2_lease_pull(const uint8_t *buf, size_t len,
struct smb2_lease *lease)
{
int version;
switch (len) {
case 32:
version = 1;
break;
case 52:
version = 2;
break;
default:
return -1;
}
memcpy(&lease->lease_key, buf, 16);
lease->lease_state = IVAL(buf, 16);
lease->lease_flags = IVAL(buf, 20);
lease->lease_duration = BVAL(buf, 24);
lease->lease_version = version;
switch (version) {
case 1:
ZERO_STRUCT(lease->parent_lease_key);
lease->lease_epoch = 0;
break;
case 2:
memcpy(&lease->parent_lease_key, buf+32, 16);
lease->lease_epoch = SVAL(buf, 48);
break;
}
return len;
}
bool smb2_lease_push(const struct smb2_lease *lease, uint8_t *buf, size_t len)
{
int version;
switch (len) {
case 32:
version = 1;
break;
case 52:
version = 2;
break;
default:
return false;
}
memcpy(&buf[0], &lease->lease_key, 16);
SIVAL(buf, 16, lease->lease_state);
SIVAL(buf, 20, lease->lease_flags);
SBVAL(buf, 24, lease->lease_duration);
if (version == 2) {
memcpy(&buf[32], &lease->parent_lease_key, 16);
SIVAL(buf, 48, lease->lease_epoch);
}
return true;
}
bool smb2_lease_key_equal(const struct smb2_lease_key *k1,
const struct smb2_lease_key *k2)
{
return ((k1->data[0] == k2->data[0]) && (k1->data[1] == k2->data[1]));
}
bool smb2_lease_equal(const struct GUID *g1,
const struct smb2_lease_key *k1,
const struct GUID *g2,
const struct smb2_lease_key *k2)
{
return GUID_equal(g1, g2) && smb2_lease_key_equal(k1, k2);
}
|
