source: vendor/current/source4/libcli/smb2/create.c

Last change on this file was 988, checked in by Silvan Scherrer, 9 years ago

Samba Server: update vendor to version 4.4.3
File size: 11.8 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 SMB2 client tree handling
5
6 Copyright (C) Andrew Tridgell 2005
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
20*/
21
22#include "includes.h"
23#include "libcli/raw/libcliraw.h"
24#include "libcli/raw/raw_proto.h"
25#include "libcli/smb2/smb2.h"
26#include "libcli/smb2/smb2_calls.h"
27#include "librpc/gen_ndr/ndr_security.h"
28
29/*
30 send a create request
31*/
32struct smb2_request *smb2_create_send(struct smb2_tree *tree, struct smb2_create *io)
33{
34 struct smb2_request *req;
35 NTSTATUS status;
36 DATA_BLOB blob;
37 struct smb2_create_blobs blobs;
38 int i;
39
40 ZERO_STRUCT(blobs);
41
42 req = smb2_request_init_tree(tree, SMB2_OP_CREATE, 0x38, true, 0);
43 if (req == NULL) return NULL;
44
45 SCVAL(req->out.body, 0x02, io->in.security_flags);
46 SCVAL(req->out.body, 0x03, io->in.oplock_level);
47 SIVAL(req->out.body, 0x04, io->in.impersonation_level);
48 SBVAL(req->out.body, 0x08, io->in.create_flags);
49 SBVAL(req->out.body, 0x10, io->in.reserved);
50 SIVAL(req->out.body, 0x18, io->in.desired_access);
51 SIVAL(req->out.body, 0x1C, io->in.file_attributes);
52 SIVAL(req->out.body, 0x20, io->in.share_access);
53 SIVAL(req->out.body, 0x24, io->in.create_disposition);
54 SIVAL(req->out.body, 0x28, io->in.create_options);
55
56 status = smb2_push_o16s16_string(&req->out, 0x2C, io->in.fname);
57 if (!NT_STATUS_IS_OK(status)) {
58 talloc_free(req);
59 return NULL;
60 }
61
62 /* now add all the optional blobs */
63 if (io->in.eas.num_eas != 0) {
64 DATA_BLOB b = data_blob_talloc(req, NULL,
65 ea_list_size_chained(io->in.eas.num_eas, io->in.eas.eas, 4));
66 ea_put_list_chained(b.data, io->in.eas.num_eas, io->in.eas.eas, 4);
67 status = smb2_create_blob_add(req, &blobs,
68 SMB2_CREATE_TAG_EXTA, b);
69 if (!NT_STATUS_IS_OK(status)) {
70 talloc_free(req);
71 return NULL;
72 }
73 data_blob_free(&b);
74 }
75
76 /* an empty MxAc tag seems to be used to ask the server to
77 return the maximum access mask allowed on the file */
78 if (io->in.query_maximal_access) {
79 /* TODO: MS-SMB2 2.2.13.2.5 says this can contain a timestamp? What to do
80 with that if it doesn't match? */
81 status = smb2_create_blob_add(req, &blobs,
82 SMB2_CREATE_TAG_MXAC, data_blob(NULL, 0));
83 if (!NT_STATUS_IS_OK(status)) {
84 talloc_free(req);
85 return NULL;
86 }
87 }
88
89 if (io->in.alloc_size != 0) {
90 uint8_t data[8];
91 SBVAL(data, 0, io->in.alloc_size);
92 status = smb2_create_blob_add(req, &blobs,
93 SMB2_CREATE_TAG_ALSI, data_blob_const(data, 8));
94 if (!NT_STATUS_IS_OK(status)) {
95 talloc_free(req);
96 return NULL;
97 }
98 }
99
100 if (io->in.durable_open) {
101 status = smb2_create_blob_add(req, &blobs,
102 SMB2_CREATE_TAG_DHNQ, data_blob_talloc_zero(req, 16));
103 if (!NT_STATUS_IS_OK(status)) {
104 talloc_free(req);
105 return NULL;
106 }
107 }
108
109 if (io->in.durable_open_v2) {
110 uint8_t data[32];
111 uint32_t flags = 0;
112 DATA_BLOB guid_blob;
113
114 SIVAL(data, 0, io->in.timeout);
115 if (io->in.persistent_open) {
116 flags = SMB2_DHANDLE_FLAG_PERSISTENT;
117 }
118 SIVAL(data, 4, flags);
119 SBVAL(data, 8, 0x0); /* reserved */
120 status = GUID_to_ndr_blob(&io->in.create_guid, req, /* TALLOC_CTX */
121 &guid_blob);
122 if (!NT_STATUS_IS_OK(status)) {
123 talloc_free(req);
124 return NULL;
125 }
126 memcpy(data+16, guid_blob.data, 16);
127
128 status = smb2_create_blob_add(req, &blobs,
129 SMB2_CREATE_TAG_DH2Q,
130 data_blob_const(data, 32));
131 if (!NT_STATUS_IS_OK(status)) {
132 talloc_free(req);
133 return NULL;
134 }
135 }
136
137 if (io->in.durable_handle) {
138 uint8_t data[16];
139 smb2_push_handle(data, io->in.durable_handle);
140 status = smb2_create_blob_add(req, &blobs,
141 SMB2_CREATE_TAG_DHNC, data_blob_const(data, 16));
142 if (!NT_STATUS_IS_OK(status)) {
143 talloc_free(req);
144 return NULL;
145 }
146 }
147
148 if (io->in.durable_handle_v2) {
149 uint8_t data[36];
150 DATA_BLOB guid_blob;
151 uint32_t flags = 0;
152
153 smb2_push_handle(data, io->in.durable_handle_v2);
154 status = GUID_to_ndr_blob(&io->in.create_guid, req, /* TALLOC_CTX */
155 &guid_blob);
156 if (!NT_STATUS_IS_OK(status)) {
157 talloc_free(req);
158 return NULL;
159 }
160 memcpy(data+16, guid_blob.data, 16);
161 if (io->in.persistent_open) {
162 flags = SMB2_DHANDLE_FLAG_PERSISTENT;
163 }
164 SIVAL(data, 32, flags);
165
166 status = smb2_create_blob_add(req, &blobs,
167 SMB2_CREATE_TAG_DH2C,
168 data_blob_const(data, 36));
169 if (!NT_STATUS_IS_OK(status)) {
170 talloc_free(req);
171 return NULL;
172 }
173 }
174
175 if (io->in.timewarp) {
176 uint8_t data[8];
177 SBVAL(data, 0, io->in.timewarp);
178 status = smb2_create_blob_add(req, &blobs,
179 SMB2_CREATE_TAG_TWRP, data_blob_const(data, 8));
180 if (!NT_STATUS_IS_OK(status)) {
181 talloc_free(req);
182 return NULL;
183 }
184 }
185
186 if (io->in.sec_desc) {
187 enum ndr_err_code ndr_err;
188 DATA_BLOB sd_blob;
189 ndr_err = ndr_push_struct_blob(&sd_blob, req, io->in.sec_desc,
190 (ndr_push_flags_fn_t)ndr_push_security_descriptor);
191 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
192 talloc_free(req);
193 return NULL;
194 }
195 status = smb2_create_blob_add(req, &blobs,
196 SMB2_CREATE_TAG_SECD, sd_blob);
197 if (!NT_STATUS_IS_OK(status)) {
198 talloc_free(req);
199 return NULL;
200 }
201 }
202
203 if (io->in.query_on_disk_id) {
204 status = smb2_create_blob_add(req, &blobs,
205 SMB2_CREATE_TAG_QFID, data_blob(NULL, 0));
206 if (!NT_STATUS_IS_OK(status)) {
207 talloc_free(req);
208 return NULL;
209 }
210 }
211
212 if (io->in.lease_request) {
213 uint8_t data[32];
214
215 if (!smb2_lease_push(io->in.lease_request, data,
216 sizeof(data))) {
217 TALLOC_FREE(req);
218 return NULL;
219 }
220
221 status = smb2_create_blob_add(
222 req, &blobs, SMB2_CREATE_TAG_RQLS,
223 data_blob_const(data, sizeof(data)));
224 if (!NT_STATUS_IS_OK(status)) {
225 talloc_free(req);
226 return NULL;
227 }
228 }
229
230 if (io->in.lease_request_v2) {
231 uint8_t data[52];
232
233 if (!smb2_lease_push(io->in.lease_request_v2, data,
234 sizeof(data))) {
235 TALLOC_FREE(req);
236 return NULL;
237 }
238
239 status = smb2_create_blob_add(
240 req, &blobs, SMB2_CREATE_TAG_RQLS,
241 data_blob_const(data, sizeof(data)));
242 if (!NT_STATUS_IS_OK(status)) {
243 talloc_free(req);
244 return NULL;
245 }
246 }
247
248 if (io->in.app_instance_id) {
249 uint8_t data[20];
250 DATA_BLOB guid_blob;
251
252 SSVAL(data, 0, 20); /* structure size */
253 SSVAL(data, 2, 0); /* reserved */
254
255 status = GUID_to_ndr_blob(io->in.app_instance_id,
256 req, /* TALLOC_CTX */
257 &guid_blob);
258 if (!NT_STATUS_IS_OK(status)) {
259 talloc_free(req);
260 return NULL;
261 }
262 memcpy(data+4, guid_blob.data, 16);
263
264 status = smb2_create_blob_add(req, &blobs,
265 SMB2_CREATE_TAG_APP_INSTANCE_ID,
266 data_blob_const(data, 20));
267 if (!NT_STATUS_IS_OK(status)) {
268 talloc_free(req);
269 return NULL;
270 }
271 }
272
273 /* and any custom blobs */
274 for (i=0;i<io->in.blobs.num_blobs;i++) {
275 status = smb2_create_blob_add(req, &blobs,
276 io->in.blobs.blobs[i].tag,
277 io->in.blobs.blobs[i].data);
278 if (!NT_STATUS_IS_OK(status)) {
279 talloc_free(req);
280 return NULL;
281 }
282 }
283
284
285 status = smb2_create_blob_push(req, &blob, blobs);
286 if (!NT_STATUS_IS_OK(status)) {
287 talloc_free(req);
288 return NULL;
289 }
290
291 status = smb2_push_o32s32_blob(&req->out, 0x30, blob);
292 if (!NT_STATUS_IS_OK(status)) {
293 talloc_free(req);
294 return NULL;
295 }
296
297 if (((io->in.fname == NULL) || (strlen(io->in.fname) == 0)) &&
298 (blob.length == 0)) {
299 struct smb2_request_buffer *buf = &req->out;
300
301 status = smb2_grow_buffer(buf, 1);
302 if (!NT_STATUS_IS_OK(status)) {
303 talloc_free(req);
304 return NULL;
305 }
306 buf->dynamic[0] = 0;
307 buf->dynamic += 1;
308 buf->body_size += 1;
309 buf->size += 1;
310 }
311
312 data_blob_free(&blob);
313
314 smb2_transport_send(req);
315
316 return req;
317}
318
319
320/*
321 recv a create reply
322*/
323NTSTATUS smb2_create_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx, struct smb2_create *io)
324{
325 NTSTATUS status;
326 DATA_BLOB blob;
327 int i;
328
329 if (!smb2_request_receive(req) ||
330 !smb2_request_is_ok(req)) {
331 return smb2_request_destroy(req);
332 }
333
334 SMB2_CHECK_PACKET_RECV(req, 0x58, true);
335 ZERO_STRUCT(io->out);
336 io->out.oplock_level = CVAL(req->in.body, 0x02);
337 io->out.reserved = CVAL(req->in.body, 0x03);
338 io->out.create_action = IVAL(req->in.body, 0x04);
339 io->out.create_time = smbcli_pull_nttime(req->in.body, 0x08);
340 io->out.access_time = smbcli_pull_nttime(req->in.body, 0x10);
341 io->out.write_time = smbcli_pull_nttime(req->in.body, 0x18);
342 io->out.change_time = smbcli_pull_nttime(req->in.body, 0x20);
343 io->out.alloc_size = BVAL(req->in.body, 0x28);
344 io->out.size = BVAL(req->in.body, 0x30);
345 io->out.file_attr = IVAL(req->in.body, 0x38);
346 io->out.reserved2 = IVAL(req->in.body, 0x3C);
347 smb2_pull_handle(req->in.body+0x40, &io->out.file.handle);
348 status = smb2_pull_o32s32_blob(&req->in, mem_ctx, req->in.body+0x50, &blob);
349 if (!NT_STATUS_IS_OK(status)) {
350 smb2_request_destroy(req);
351 return status;
352 }
353
354 status = smb2_create_blob_parse(mem_ctx, blob, &io->out.blobs);
355 if (!NT_STATUS_IS_OK(status)) {
356 smb2_request_destroy(req);
357 return status;
358 }
359
360 /* pull out the parsed blobs */
361 for (i=0;i<io->out.blobs.num_blobs;i++) {
362 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_MXAC) == 0) {
363 /* TODO: this also contains a status field in
364 first 4 bytes */
365 if (io->out.blobs.blobs[i].data.length != 8) {
366 smb2_request_destroy(req);
367 return NT_STATUS_INVALID_NETWORK_RESPONSE;
368 }
369 io->out.maximal_access = IVAL(io->out.blobs.blobs[i].data.data, 4);
370 }
371 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_QFID) == 0) {
372 if (io->out.blobs.blobs[i].data.length != 32) {
373 smb2_request_destroy(req);
374 return NT_STATUS_INVALID_NETWORK_RESPONSE;
375 }
376 memcpy(io->out.on_disk_id, io->out.blobs.blobs[i].data.data, 32);
377 }
378 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_RQLS) == 0) {
379 struct smb2_lease *ls = NULL;
380 uint8_t *data;
381
382 ZERO_STRUCT(io->out.lease_response);
383 ZERO_STRUCT(io->out.lease_response_v2);
384
385 switch (io->out.blobs.blobs[i].data.length) {
386 case 32:
387 ls = &io->out.lease_response;
388 ls->lease_version = 1;
389 break;
390 case 52:
391 ls = &io->out.lease_response_v2;
392 ls->lease_version = 2;
393 break;
394 default:
395 smb2_request_destroy(req);
396 return NT_STATUS_INVALID_NETWORK_RESPONSE;
397 }
398
399 data = io->out.blobs.blobs[i].data.data;
400 memcpy(&ls->lease_key, data, 16);
401 ls->lease_state = IVAL(data, 16);
402 ls->lease_flags = IVAL(data, 20);
403 ls->lease_duration = BVAL(data, 24);
404
405 if (io->out.blobs.blobs[i].data.length == 52) {
406 memcpy(&ls->parent_lease_key, data+32, 16);
407 ls->lease_epoch = SVAL(data, 48);
408 }
409 }
410 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_DHNQ) == 0) {
411 if (io->out.blobs.blobs[i].data.length != 8) {
412 smb2_request_destroy(req);
413 return NT_STATUS_INVALID_NETWORK_RESPONSE;
414 }
415 io->out.durable_open = true;
416 }
417 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_DH2Q) == 0) {
418 uint32_t flags;
419 uint8_t *data;
420
421 if (io->out.blobs.blobs[i].data.length != 8) {
422 smb2_request_destroy(req);
423 return NT_STATUS_INVALID_NETWORK_RESPONSE;
424 }
425
426 io->out.durable_open = false;
427 io->out.durable_open_v2 = true;
428
429 data = io->out.blobs.blobs[i].data.data;
430 io->out.timeout = IVAL(data, 0);
431 flags = IVAL(data, 4);
432 if ((flags & SMB2_DHANDLE_FLAG_PERSISTENT) != 0) {
433 io->out.persistent_open = true;
434 }
435 }
436 }
437
438 data_blob_free(&blob);
439
440 return smb2_request_destroy(req);
441}
442
443/*
444 sync create request
445*/
446NTSTATUS smb2_create(struct smb2_tree *tree, TALLOC_CTX *mem_ctx, struct smb2_create *io)
447{
448 struct smb2_request *req = smb2_create_send(tree, io);
449 return smb2_create_recv(req, mem_ctx, io);
450}
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