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
|
/*
Unix SMB/CIFS implementation.
SMB2 client notify calls
Copyright (C) Stefan Metzmacher 2006
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/raw/libcliraw.h"
#include "libcli/smb2/smb2.h"
#include "libcli/smb2/smb2_calls.h"
/*
send a cancel request
*/
NTSTATUS smb2_cancel(struct smb2_request *r)
{
NTSTATUS status;
struct smb2_request *c;
uint32_t old_timeout;
uint64_t old_seqnum;
/*
* if we don't get a pending id yet, we just
* mark the request for pending, so that we directly
* send the cancel after getting the pending id
*/
if (!r->cancel.can_cancel) {
r->cancel.do_cancel++;
return NT_STATUS_OK;
}
/* we don't want a seqmun for a SMB2 Cancel */
old_seqnum = r->transport->seqnum;
c = smb2_request_init(r->transport, SMB2_OP_CANCEL, 0x04, false, 0);
r->transport->seqnum = old_seqnum;
NT_STATUS_HAVE_NO_MEMORY(c);
c->seqnum = 0;
SIVAL(c->out.hdr, SMB2_HDR_FLAGS, 0x00000002);
SSVAL(c->out.hdr, SMB2_HDR_CREDIT, 0x0030);
SBVAL(c->out.hdr, SMB2_HDR_ASYNC_ID, r->cancel.async_id);
SBVAL(c->out.hdr, SMB2_HDR_MESSAGE_ID, c->seqnum);
if (r->session) {
SBVAL(c->out.hdr, SMB2_HDR_SESSION_ID, r->session->uid);
c->session = r->session;
}
SSVAL(c->out.body, 0x02, 0);
old_timeout = c->transport->options.request_timeout;
c->transport->options.request_timeout = 0;
smb2_transport_send(c);
c->transport->options.request_timeout = old_timeout;
if (c->state == SMB2_REQUEST_ERROR) {
status = c->status;
} else {
status = NT_STATUS_OK;
}
talloc_free(c);
return status;
}
|
