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
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
|
/*
Unix SMB/CIFS implementation.
client file read/write routines
Copyright (C) Andrew Tridgell 1994-1998
Copyright (C) James Myers 2003
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"
#define SETUP_REQUEST(cmd, wct, buflen) do { \
req = smbcli_request_setup(tree, cmd, wct, buflen); \
if (!req) return NULL; \
} while (0)
/****************************************************************************
low level read operation (async send)
****************************************************************************/
struct smbcli_request *smb_raw_read_send(struct smbcli_tree *tree, union smb_read *parms)
{
BOOL bigoffset = False;
struct smbcli_request *req = NULL;
switch (parms->generic.level) {
case RAW_READ_READBRAW:
if (tree->session->transport->negotiate.capabilities & CAP_LARGE_FILES) {
bigoffset = True;
}
SETUP_REQUEST(SMBreadbraw, bigoffset? 10:8, 0);
SSVAL(req->out.vwv, VWV(0), parms->readbraw.in.fnum);
SIVAL(req->out.vwv, VWV(1), parms->readbraw.in.offset);
SSVAL(req->out.vwv, VWV(3), parms->readbraw.in.maxcnt);
SSVAL(req->out.vwv, VWV(4), parms->readbraw.in.mincnt);
SIVAL(req->out.vwv, VWV(5), parms->readbraw.in.timeout);
SSVAL(req->out.vwv, VWV(7), 0); /* reserved */
if (bigoffset) {
SIVAL(req->out.vwv, VWV(8),parms->readbraw.in.offset>>32);
}
break;
case RAW_READ_LOCKREAD:
SETUP_REQUEST(SMBlockread, 5, 0);
SSVAL(req->out.vwv, VWV(0), parms->lockread.in.fnum);
SSVAL(req->out.vwv, VWV(1), parms->lockread.in.count);
SIVAL(req->out.vwv, VWV(2), parms->lockread.in.offset);
SSVAL(req->out.vwv, VWV(4), parms->lockread.in.remaining);
break;
case RAW_READ_READ:
SETUP_REQUEST(SMBread, 5, 0);
SSVAL(req->out.vwv, VWV(0), parms->read.in.fnum);
SSVAL(req->out.vwv, VWV(1), parms->read.in.count);
SIVAL(req->out.vwv, VWV(2), parms->read.in.offset);
SSVAL(req->out.vwv, VWV(4), parms->read.in.remaining);
break;
case RAW_READ_READX:
if (tree->session->transport->negotiate.capabilities & CAP_LARGE_FILES) {
bigoffset = True;
}
SETUP_REQUEST(SMBreadX, bigoffset ? 12 : 10, 0);
SSVAL(req->out.vwv, VWV(0), 0xFF);
SSVAL(req->out.vwv, VWV(1), 0);
SSVAL(req->out.vwv, VWV(2), parms->readx.in.fnum);
SIVAL(req->out.vwv, VWV(3), parms->readx.in.offset);
SSVAL(req->out.vwv, VWV(5), parms->readx.in.maxcnt & 0xFFFF);
SSVAL(req->out.vwv, VWV(6), parms->readx.in.mincnt);
SIVAL(req->out.vwv, VWV(7), parms->readx.in.maxcnt >> 16);
SSVAL(req->out.vwv, VWV(9), parms->readx.in.remaining);
if (bigoffset) {
SIVAL(req->out.vwv, VWV(10),parms->readx.in.offset>>32);
}
break;
}
if (!smbcli_request_send(req)) {
smbcli_request_destroy(req);
return NULL;
}
/* the transport layer needs to know that a readbraw is pending
and handle receives a little differently */
if (parms->generic.level == RAW_READ_READBRAW) {
tree->session->transport->readbraw_pending = 1;
}
return req;
}
/****************************************************************************
low level read operation (async recv)
****************************************************************************/
NTSTATUS smb_raw_read_recv(struct smbcli_request *req, union smb_read *parms)
{
if (!smbcli_request_receive(req) ||
smbcli_request_is_error(req)) {
goto failed;
}
switch (parms->generic.level) {
case RAW_READ_READBRAW:
parms->readbraw.out.nread = req->in.size - NBT_HDR_SIZE;
if (parms->readbraw.out.nread >
MAX(parms->readx.in.mincnt, parms->readx.in.maxcnt)) {
req->status = NT_STATUS_BUFFER_TOO_SMALL;
goto failed;
}
memcpy(parms->readbraw.out.data, req->in.buffer + NBT_HDR_SIZE, parms->readbraw.out.nread);
break;
case RAW_READ_LOCKREAD:
SMBCLI_CHECK_WCT(req, 5);
parms->lockread.out.nread = SVAL(req->in.vwv, VWV(0));
if (parms->lockread.out.nread > parms->lockread.in.count ||
!smbcli_raw_pull_data(req, req->in.data+3,
parms->lockread.out.nread, parms->lockread.out.data)) {
req->status = NT_STATUS_BUFFER_TOO_SMALL;
}
break;
case RAW_READ_READ:
/* there are 4 reserved words in the reply */
SMBCLI_CHECK_WCT(req, 5);
parms->read.out.nread = SVAL(req->in.vwv, VWV(0));
if (parms->read.out.nread > parms->read.in.count ||
!smbcli_raw_pull_data(req, req->in.data+3,
parms->read.out.nread, parms->read.out.data)) {
req->status = NT_STATUS_BUFFER_TOO_SMALL;
}
break;
case RAW_READ_READX:
/* there are 5 reserved words in the reply */
SMBCLI_CHECK_WCT(req, 12);
parms->readx.out.remaining = SVAL(req->in.vwv, VWV(2));
parms->readx.out.compaction_mode = SVAL(req->in.vwv, VWV(3));
parms->readx.out.nread = SVAL(req->in.vwv, VWV(5));
if (parms->readx.out.nread > MAX(parms->readx.in.mincnt, parms->readx.in.maxcnt) ||
!smbcli_raw_pull_data(req, req->in.hdr + SVAL(req->in.vwv, VWV(6)),
parms->readx.out.nread,
parms->readx.out.data)) {
req->status = NT_STATUS_BUFFER_TOO_SMALL;
}
break;
}
failed:
return smbcli_request_destroy(req);
}
/****************************************************************************
low level read operation (sync interface)
****************************************************************************/
NTSTATUS smb_raw_read(struct smbcli_tree *tree, union smb_read *parms)
{
struct smbcli_request *req = smb_raw_read_send(tree, parms);
return smb_raw_read_recv(req, parms);
}
/****************************************************************************
raw write interface (async send)
****************************************************************************/
struct smbcli_request *smb_raw_write_send(struct smbcli_tree *tree, union smb_write *parms)
{
BOOL bigoffset = False;
struct smbcli_request *req = NULL;
switch (parms->generic.level) {
case RAW_WRITE_WRITEUNLOCK:
SETUP_REQUEST(SMBwriteunlock, 5, 3 + parms->writeunlock.in.count);
SSVAL(req->out.vwv, VWV(0), parms->writeunlock.in.fnum);
SSVAL(req->out.vwv, VWV(1), parms->writeunlock.in.count);
SIVAL(req->out.vwv, VWV(2), parms->writeunlock.in.offset);
SSVAL(req->out.vwv, VWV(4), parms->writeunlock.in.remaining);
SCVAL(req->out.data, 0, SMB_DATA_BLOCK);
SSVAL(req->out.data, 1, parms->writeunlock.in.count);
if (parms->writeunlock.in.count > 0) {
memcpy(req->out.data+3, parms->writeunlock.in.data,
parms->writeunlock.in.count);
}
break;
case RAW_WRITE_WRITE:
SETUP_REQUEST(SMBwrite, 5, 3 + parms->write.in.count);
SSVAL(req->out.vwv, VWV(0), parms->write.in.fnum);
SSVAL(req->out.vwv, VWV(1), parms->write.in.count);
SIVAL(req->out.vwv, VWV(2), parms->write.in.offset);
SSVAL(req->out.vwv, VWV(4), parms->write.in.remaining);
SCVAL(req->out.data, 0, SMB_DATA_BLOCK);
SSVAL(req->out.data, 1, parms->write.in.count);
if (parms->write.in.count > 0) {
memcpy(req->out.data+3, parms->write.in.data, parms->write.in.count);
}
break;
case RAW_WRITE_WRITECLOSE:
SETUP_REQUEST(SMBwriteclose, 6, 1 + parms->writeclose.in.count);
SSVAL(req->out.vwv, VWV(0), parms->writeclose.in.fnum);
SSVAL(req->out.vwv, VWV(1), parms->writeclose.in.count);
SIVAL(req->out.vwv, VWV(2), parms->writeclose.in.offset);
raw_push_dos_date3(tree->session->transport,
req->out.vwv, VWV(4), parms->writeclose.in.mtime);
SCVAL(req->out.data, 0, 0);
if (parms->writeclose.in.count > 0) {
memcpy(req->out.data+1, parms->writeclose.in.data,
parms->writeclose.in.count);
}
break;
case RAW_WRITE_WRITEX:
if (tree->session->transport->negotiate.capabilities & CAP_LARGE_FILES) {
bigoffset = True;
}
SETUP_REQUEST(SMBwriteX, bigoffset ? 14 : 12, parms->writex.in.count);
SSVAL(req->out.vwv, VWV(0), 0xFF);
SSVAL(req->out.vwv, VWV(1), 0);
SSVAL(req->out.vwv, VWV(2), parms->writex.in.fnum);
SIVAL(req->out.vwv, VWV(3), parms->writex.in.offset);
SIVAL(req->out.vwv, VWV(5), 0); /* reserved */
SSVAL(req->out.vwv, VWV(7), parms->writex.in.wmode);
SSVAL(req->out.vwv, VWV(8), parms->writex.in.remaining);
SSVAL(req->out.vwv, VWV(9), parms->writex.in.count>>16);
SSVAL(req->out.vwv, VWV(10), parms->writex.in.count);
SSVAL(req->out.vwv, VWV(11), PTR_DIFF(req->out.data, req->out.hdr));
if (bigoffset) {
SIVAL(req->out.vwv,VWV(12),parms->writex.in.offset>>32);
}
if (parms->writex.in.count > 0) {
memcpy(req->out.data, parms->writex.in.data, parms->writex.in.count);
}
break;
case RAW_WRITE_SPLWRITE:
SETUP_REQUEST(SMBsplwr, 1, parms->splwrite.in.count);
SSVAL(req->out.vwv, VWV(0), parms->splwrite.in.fnum);
if (parms->splwrite.in.count > 0) {
memcpy(req->out.data, parms->splwrite.in.data, parms->splwrite.in.count);
}
break;
}
if (!smbcli_request_send(req)) {
smbcli_request_destroy(req);
return NULL;
}
return req;
}
/****************************************************************************
raw write interface (async recv)
****************************************************************************/
NTSTATUS smb_raw_write_recv(struct smbcli_request *req, union smb_write *parms)
{
if (!smbcli_request_receive(req) ||
smbcli_request_is_error(req)) {
goto failed;
}
switch (parms->generic.level) {
case RAW_WRITE_WRITEUNLOCK:
SMBCLI_CHECK_WCT(req, 1);
parms->writeunlock.out.nwritten = SVAL(req->in.vwv, VWV(0));
break;
case RAW_WRITE_WRITE:
SMBCLI_CHECK_WCT(req, 1);
parms->write.out.nwritten = SVAL(req->in.vwv, VWV(0));
break;
case RAW_WRITE_WRITECLOSE:
SMBCLI_CHECK_WCT(req, 1);
parms->writeclose.out.nwritten = SVAL(req->in.vwv, VWV(0));
break;
case RAW_WRITE_WRITEX:
SMBCLI_CHECK_WCT(req, 6);
parms->writex.out.nwritten = SVAL(req->in.vwv, VWV(2));
parms->writex.out.nwritten += (CVAL(req->in.vwv, VWV(4)) << 16);
parms->writex.out.remaining = SVAL(req->in.vwv, VWV(3));
break;
case RAW_WRITE_SPLWRITE:
break;
}
failed:
return smbcli_request_destroy(req);
}
/****************************************************************************
raw write interface (sync interface)
****************************************************************************/
NTSTATUS smb_raw_write(struct smbcli_tree *tree, union smb_write *parms)
{
struct smbcli_request *req = smb_raw_write_send(tree, parms);
return smb_raw_write_recv(req, parms);
}
|
