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
|
/*
Unix SMB/CIFS implementation.
smb2 lib
Copyright (C) Volker Lendecke 2011
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 "client.h"
#include "async_smb.h"
#include "smb2cli_base.h"
#include "smb2cli.h"
#include "libsmb/proto.h"
#include "lib/util/tevent_ntstatus.h"
struct smb2cli_write_state {
uint8_t fixed[48];
uint8_t dyn_pad[1];
};
static void smb2cli_write_done(struct tevent_req *subreq);
struct tevent_req *smb2cli_write_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct cli_state *cli,
uint32_t length,
uint64_t offset,
uint64_t fid_persistent,
uint64_t fid_volatile,
uint32_t remaining_bytes,
uint32_t flags,
const uint8_t *data)
{
struct tevent_req *req, *subreq;
struct smb2cli_write_state *state;
uint8_t *fixed;
const uint8_t *dyn;
size_t dyn_len;
req = tevent_req_create(mem_ctx, &state,
struct smb2cli_write_state);
if (req == NULL) {
return NULL;
}
fixed = state->fixed;
SSVAL(fixed, 0, 49);
SSVAL(fixed, 2, SMB2_HDR_BODY + 48);
SIVAL(fixed, 4, length);
SBVAL(fixed, 8, offset);
SBVAL(fixed, 16, fid_persistent);
SBVAL(fixed, 24, fid_volatile);
SIVAL(fixed, 36, remaining_bytes);
SIVAL(fixed, 44, flags);
if (length > 0) {
dyn = data;
dyn_len = length;
} else {
dyn = state->dyn_pad;;
dyn_len = sizeof(state->dyn_pad);
}
subreq = smb2cli_req_send(state, ev, cli, SMB2_OP_WRITE,
0, 0, /* flags */
cli->timeout,
cli->smb2.pid,
cli->smb2.tid,
cli->smb2.session,
state->fixed, sizeof(state->fixed),
dyn, dyn_len);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, smb2cli_write_done, req);
return req;
}
static void smb2cli_write_done(struct tevent_req *subreq)
{
struct tevent_req *req =
tevent_req_callback_data(subreq,
struct tevent_req);
NTSTATUS status;
struct iovec *iov;
static const struct smb2cli_req_expected_response expected[] = {
{
.status = NT_STATUS_OK,
.body_size = 0x11
}
};
status = smb2cli_req_recv(subreq, talloc_tos(), &iov,
expected, ARRAY_SIZE(expected));
if (tevent_req_nterror(req, status)) {
return;
}
tevent_req_done(req);
}
NTSTATUS smb2cli_write_recv(struct tevent_req *req)
{
return tevent_req_simple_recv_ntstatus(req);
}
NTSTATUS smb2cli_write(struct cli_state *cli,
uint32_t length,
uint64_t offset,
uint64_t fid_persistent,
uint64_t fid_volatile,
uint32_t remaining_bytes,
uint32_t flags,
const uint8_t *data)
{
TALLOC_CTX *frame = talloc_stackframe();
struct event_context *ev;
struct tevent_req *req;
NTSTATUS status = NT_STATUS_NO_MEMORY;
if (cli_has_async_calls(cli)) {
/*
* Can't use sync call while an async call is in flight
*/
status = NT_STATUS_INVALID_PARAMETER;
goto fail;
}
ev = event_context_init(frame);
if (ev == NULL) {
goto fail;
}
req = smb2cli_write_send(frame, ev, cli, length, offset,
fid_persistent, fid_volatile,
remaining_bytes, flags, data);
if (req == NULL) {
goto fail;
}
if (!tevent_req_poll_ntstatus(req, ev, &status)) {
goto fail;
}
status = smb2cli_write_recv(req);
fail:
TALLOC_FREE(frame);
return status;
}
|
