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
|
/*
Unix SMB/CIFS implementation.
Core SMB2 server
Copyright (C) Stefan Metzmacher 2009
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 "smbd/globals.h"
#include "../source4/libcli/smb2/smb2_constants.h"
static NTSTATUS smbd_smb2_create(struct smbd_smb2_request *req,
uint8_t in_oplock_level,
uint32_t in_impersonation_level,
uint32_t in_desired_access,
uint32_t in_file_attributes,
uint32_t in_share_access,
uint32_t in_create_disposition,
uint32_t in_create_options,
const char *in_name,
uint8_t *out_oplock_level,
uint32_t *out_create_action,
NTTIME *out_creation_time,
NTTIME *out_last_access_time,
NTTIME *out_last_write_time,
NTTIME *out_change_time,
uint64_t *out_allocation_size,
uint64_t *out_end_of_file,
uint32_t *out_file_attributes,
uint64_t *out_file_id_volatile);
NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req)
{
const uint8_t *inbody;
int i = req->current_idx;
uint8_t *outhdr;
DATA_BLOB outbody;
DATA_BLOB outdyn;
size_t expected_body_size = 0x39;
size_t body_size;
uint8_t in_oplock_level;
uint32_t in_impersonation_level;
uint32_t in_desired_access;
uint32_t in_file_attributes;
uint32_t in_share_access;
uint32_t in_create_disposition;
uint32_t in_create_options;
uint16_t in_name_offset;
uint16_t in_name_length;
DATA_BLOB in_name_buffer;
char *in_name_string;
size_t in_name_string_size;
uint8_t out_oplock_level;
uint32_t out_create_action;
NTTIME out_creation_time;
NTTIME out_last_access_time;
NTTIME out_last_write_time;
NTTIME out_change_time;
uint64_t out_allocation_size;
uint64_t out_end_of_file;
uint32_t out_file_attributes;
uint64_t out_file_id_volatile;
NTSTATUS status;
bool ok;
if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
body_size = SVAL(inbody, 0x00);
if (body_size != expected_body_size) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
in_oplock_level = CVAL(inbody, 0x03);
in_impersonation_level = IVAL(inbody, 0x04);
in_desired_access = IVAL(inbody, 0x18);
in_file_attributes = IVAL(inbody, 0x1C);
in_share_access = IVAL(inbody, 0x20);
in_create_disposition = IVAL(inbody, 0x24);
in_create_options = IVAL(inbody, 0x28);
in_name_offset = SVAL(inbody, 0x2C);
in_name_length = SVAL(inbody, 0x2E);
if (in_name_offset != (SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
if (in_name_length > req->in.vector[i+2].iov_len) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
in_name_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
in_name_buffer.length = in_name_length;
ok = convert_string_talloc(req, CH_UTF16, CH_UNIX,
in_name_buffer.data,
in_name_buffer.length,
&in_name_string,
&in_name_string_size, false);
if (!ok) {
return smbd_smb2_request_error(req, NT_STATUS_ILLEGAL_CHARACTER);
}
status = smbd_smb2_create(req,
in_oplock_level,
in_impersonation_level,
in_desired_access,
in_file_attributes,
in_share_access,
in_create_disposition,
in_create_options,
in_name_string,
&out_oplock_level,
&out_create_action,
&out_creation_time,
&out_last_access_time,
&out_last_write_time,
&out_change_time,
&out_allocation_size,
&out_end_of_file,
&out_file_attributes,
&out_file_id_volatile);
if (!NT_STATUS_IS_OK(status)) {
return smbd_smb2_request_error(req, status);
}
outhdr = (uint8_t *)req->out.vector[i].iov_base;
outbody = data_blob_talloc(req->out.vector, NULL, 0x58);
if (outbody.data == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
SSVAL(outbody.data, 0x00, 0x58 + 1); /* struct size */
SCVAL(outbody.data, 0x02,
out_oplock_level); /* oplock level */
SCVAL(outbody.data, 0x03, 0); /* reserved */
SIVAL(outbody.data, 0x04,
out_create_action); /* create action */
SBVAL(outbody.data, 0x08,
out_creation_time); /* creation time */
SBVAL(outbody.data, 0x10,
out_last_access_time); /* last access time */
SBVAL(outbody.data, 0x18,
out_last_write_time); /* last write time */
SBVAL(outbody.data, 0x20,
out_change_time); /* change time */
SBVAL(outbody.data, 0x28,
out_allocation_size); /* allocation size */
SBVAL(outbody.data, 0x30,
out_end_of_file); /* end of file */
SIVAL(outbody.data, 0x38,
out_file_attributes); /* file attributes */
SIVAL(outbody.data, 0x3C, 0); /* reserved */
SBVAL(outbody.data, 0x40, 0); /* file id (persistent) */
SBVAL(outbody.data, 0x48,
out_file_id_volatile); /* file id (volatile) */
SIVAL(outbody.data, 0x50, 0); /* create contexts offset */
SIVAL(outbody.data, 0x54, 0); /* create contexts length */
outdyn = data_blob_const(NULL, 0);
return smbd_smb2_request_done(req, outbody, &outdyn);
}
static NTSTATUS smbd_smb2_create(struct smbd_smb2_request *req,
uint8_t in_oplock_level,
uint32_t in_impersonation_level,
uint32_t in_desired_access,
uint32_t in_file_attributes,
uint32_t in_share_access,
uint32_t in_create_disposition,
uint32_t in_create_options,
const char *in_name,
uint8_t *out_oplock_level,
uint32_t *out_create_action,
NTTIME *out_creation_time,
NTTIME *out_last_access_time,
NTTIME *out_last_write_time,
NTTIME *out_change_time,
uint64_t *out_allocation_size,
uint64_t *out_end_of_file,
uint32_t *out_file_attributes,
uint64_t *out_file_id_volatile)
{
NTSTATUS status;
struct smb_request *smbreq;
files_struct *result;
int info;
SMB_STRUCT_STAT sbuf;
DEBUG(10,("smbd_smb2_create: name[%s]\n",
in_name));
smbreq = smbd_smb2_fake_smb_request(req);
if (smbreq == NULL) {
return NT_STATUS_NO_MEMORY;
}
if (IS_IPC(smbreq->conn)) {
const char *pipe_name = in_name;
if (!lp_nt_pipe_support()) {
return NT_STATUS_ACCESS_DENIED;
}
/* Strip \\ off the name. */
if (pipe_name[0] == '\\') {
pipe_name++;
}
status = open_np_file(smbreq, pipe_name, &result);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
info = 0;
ZERO_STRUCT(sbuf);
} else if (CAN_PRINT(smbreq->conn)) {
status = file_new(smbreq, smbreq->conn, &result);
if(!NT_STATUS_IS_OK(status)) {
return status;
}
status = print_fsp_open(smbreq,
smbreq->conn,
in_name,
smbreq->vuid,
result,
&sbuf);
if (!NT_STATUS_IS_OK(status)) {
file_free(smbreq, result);
return status;
}
info = FILE_WAS_CREATED;
} else {
/* these are ignored for SMB2 */
in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
status = SMB_VFS_CREATE_FILE(req->tcon->compat_conn,
smbreq,
0, /* root_dir_fid */
in_name,
CFF_DOS_PATH, /* create_file_flags */
in_desired_access,
in_share_access,
in_create_disposition,
in_create_options,
in_file_attributes,
0, /* oplock_request */
0, /* allocation_size */
NULL, /* security_descriptor */
NULL, /* ea_list */
&result,
&info,
&sbuf);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
}
*out_oplock_level = 0;
if ((in_create_disposition == FILE_SUPERSEDE)
&& (info == FILE_WAS_OVERWRITTEN)) {
*out_create_action = FILE_WAS_SUPERSEDED;
} else {
*out_create_action = info;
}
unix_timespec_to_nt_time(out_creation_time, sbuf.st_ex_btime);
unix_timespec_to_nt_time(out_last_access_time, sbuf.st_ex_atime);
unix_timespec_to_nt_time(out_last_write_time,sbuf.st_ex_mtime);
unix_timespec_to_nt_time(out_change_time, sbuf.st_ex_ctime);
*out_allocation_size = sbuf.st_ex_blksize * sbuf.st_ex_blocks;
*out_end_of_file = sbuf.st_ex_size;
*out_file_attributes = dos_mode(result->conn,result->fsp_name,&sbuf);
if (*out_file_attributes == 0) {
*out_file_attributes = FILE_ATTRIBUTE_NORMAL;
}
*out_file_id_volatile = result->fnum;
return NT_STATUS_OK;
}
|
