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s3-printing: follow force user/group for driver IO
[Samba.git] / source3 / smbd / smb2_ioctl.c
blob672965f4704ca5e885d4399d4dd30aab5ea996e2
1 /*
2 Unix SMB/CIFS implementation.
3 Core SMB2 server
4
5 Copyright (C) Stefan Metzmacher 2009
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19 */
20
21 #include "includes.h"
22 #include "smbd/globals.h"
23 #include "../libcli/smb/smb_common.h"
24
25 static struct tevent_req *smbd_smb2_ioctl_send(TALLOC_CTX *mem_ctx,
26 struct tevent_context *ev,
27 struct smbd_smb2_request *smb2req,
28 uint32_t in_ctl_code,
29 uint64_t in_file_id_volatile,
30 DATA_BLOB in_input,
31 uint32_t in_max_output,
32 uint32_t in_flags);
33 static NTSTATUS smbd_smb2_ioctl_recv(struct tevent_req *req,
34 TALLOC_CTX *mem_ctx,
35 DATA_BLOB *out_output);
36
37 static void smbd_smb2_request_ioctl_done(struct tevent_req *subreq);
38 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req)
39 {
40 const uint8_t *inhdr;
41 const uint8_t *inbody;
42 int i = req->current_idx;
43 size_t expected_body_size = 0x39;
44 size_t body_size;
45 uint32_t in_ctl_code;
46 uint64_t in_file_id_persistent;
47 uint64_t in_file_id_volatile;
48 uint32_t in_input_offset;
49 uint32_t in_input_length;
50 DATA_BLOB in_input_buffer;
51 uint32_t in_max_output_length;
52 uint32_t in_flags;
53 struct tevent_req *subreq;
54
55 inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
56 if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
57 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
58 }
59
60 inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
61
62 body_size = SVAL(inbody, 0x00);
63 if (body_size != expected_body_size) {
64 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
65 }
66
67 in_ctl_code = IVAL(inbody, 0x04);
68 in_file_id_persistent = BVAL(inbody, 0x08);
69 in_file_id_volatile = BVAL(inbody, 0x10);
70 in_input_offset = IVAL(inbody, 0x18);
71 in_input_length = IVAL(inbody, 0x1C);
72 in_max_output_length = IVAL(inbody, 0x2C);
73 in_flags = IVAL(inbody, 0x30);
74
75 if (in_input_offset != (SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
76 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
77 }
78
79 if (in_input_length > req->in.vector[i+2].iov_len) {
80 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
81 }
82
83 in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
84 in_input_buffer.length = in_input_length;
85
86 if (req->compat_chain_fsp) {
87 /* skip check */
88 } else if (in_file_id_persistent == UINT64_MAX &&
89 in_file_id_volatile == UINT64_MAX) {
90 /* without a handle */
91 } else if (in_file_id_persistent != in_file_id_volatile) {
92 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
93 }
94
95 subreq = smbd_smb2_ioctl_send(req,
96 req->sconn->smb2.event_ctx,
97 req,
98 in_ctl_code,
99 in_file_id_volatile,
100 in_input_buffer,
101 in_max_output_length,
102 in_flags);
103 if (subreq == NULL) {
104 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
105 }
106 tevent_req_set_callback(subreq, smbd_smb2_request_ioctl_done, req);
107
108 return smbd_smb2_request_pending_queue(req, subreq);
109 }
110
111 static void smbd_smb2_request_ioctl_done(struct tevent_req *subreq)
112 {
113 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
114 struct smbd_smb2_request);
115 const uint8_t *inbody;
116 int i = req->current_idx;
117 uint8_t *outhdr;
118 DATA_BLOB outbody;
119 DATA_BLOB outdyn;
120 uint32_t in_ctl_code;
121 uint64_t in_file_id_persistent;
122 uint64_t in_file_id_volatile;
123 uint32_t out_input_offset;
124 uint32_t out_output_offset;
125 DATA_BLOB out_output_buffer = data_blob_null;
126 NTSTATUS status;
127 NTSTATUS error; /* transport error */
128
129 status = smbd_smb2_ioctl_recv(subreq, req, &out_output_buffer);
130
131 DEBUG(10,("smbd_smb2_request_ioctl_done: smbd_smb2_ioctl_recv returned "
132 "%u status %s\n",
133 (unsigned int)out_output_buffer.length,
134 nt_errstr(status) ));
135
136 TALLOC_FREE(subreq);
137 if (NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
138 /* also ok */
139 } else if (!NT_STATUS_IS_OK(status)) {
140 error = smbd_smb2_request_error(req, status);
141 if (!NT_STATUS_IS_OK(error)) {
142 smbd_server_connection_terminate(req->sconn,
143 nt_errstr(error));
144 return;
145 }
146 return;
147 }
148
149 out_input_offset = SMB2_HDR_BODY + 0x30;
150 out_output_offset = SMB2_HDR_BODY + 0x30;
151
152 inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
153
154 in_ctl_code = IVAL(inbody, 0x04);
155 in_file_id_persistent = BVAL(inbody, 0x08);
156 in_file_id_volatile = BVAL(inbody, 0x10);
157
158 outhdr = (uint8_t *)req->out.vector[i].iov_base;
159
160 outbody = data_blob_talloc(req->out.vector, NULL, 0x30);
161 if (outbody.data == NULL) {
162 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
163 if (!NT_STATUS_IS_OK(error)) {
164 smbd_server_connection_terminate(req->sconn,
165 nt_errstr(error));
166 return;
167 }
168 return;
169 }
170
171 SSVAL(outbody.data, 0x00, 0x30 + 1); /* struct size */
172 SSVAL(outbody.data, 0x02, 0); /* reserved */
173 SIVAL(outbody.data, 0x04,
174 in_ctl_code); /* ctl code */
175 SBVAL(outbody.data, 0x08,
176 in_file_id_persistent); /* file id (persistent) */
177 SBVAL(outbody.data, 0x10,
178 in_file_id_volatile); /* file id (volatile) */
179 SIVAL(outbody.data, 0x18,
180 out_input_offset); /* input offset */
181 SIVAL(outbody.data, 0x1C, 0); /* input count */
182 SIVAL(outbody.data, 0x20,
183 out_output_offset); /* output offset */
184 SIVAL(outbody.data, 0x24,
185 out_output_buffer.length); /* output count */
186 SIVAL(outbody.data, 0x28, 0); /* flags */
187 SIVAL(outbody.data, 0x2C, 0); /* reserved */
188
189 /*
190 * Note: Windows Vista and 2008 send back also the
191 * input from the request. But it was fixed in
192 * Windows 7.
193 */
194 outdyn = out_output_buffer;
195
196 error = smbd_smb2_request_done_ex(req, status, outbody, &outdyn,
197 __location__);
198 if (!NT_STATUS_IS_OK(error)) {
199 smbd_server_connection_terminate(req->sconn,
200 nt_errstr(error));
201 return;
202 }
203 }
204
205 struct smbd_smb2_ioctl_state {
206 struct smbd_smb2_request *smb2req;
207 struct smb_request *smbreq;
208 files_struct *fsp;
209 DATA_BLOB in_input;
210 uint32_t in_max_output;
211 DATA_BLOB out_output;
212 };
213
214 static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq);
215 static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq);
216
217 static struct tevent_req *smbd_smb2_ioctl_send(TALLOC_CTX *mem_ctx,
218 struct tevent_context *ev,
219 struct smbd_smb2_request *smb2req,
220 uint32_t in_ctl_code,
221 uint64_t in_file_id_volatile,
222 DATA_BLOB in_input,
223 uint32_t in_max_output,
224 uint32_t in_flags)
225 {
226 struct tevent_req *req;
227 struct smbd_smb2_ioctl_state *state;
228 struct smb_request *smbreq;
229 files_struct *fsp = NULL;
230 struct tevent_req *subreq;
231
232 req = tevent_req_create(mem_ctx, &state,
233 struct smbd_smb2_ioctl_state);
234 if (req == NULL) {
235 return NULL;
236 }
237 state->smb2req = smb2req;
238 state->smbreq = NULL;
239 state->fsp = NULL;
240 state->in_input = in_input;
241 state->in_max_output = in_max_output;
242 state->out_output = data_blob_null;
243
244 DEBUG(10,("smbd_smb2_ioctl: file_id[0x%016llX]\n",
245 (unsigned long long)in_file_id_volatile));
246
247 smbreq = smbd_smb2_fake_smb_request(smb2req);
248 if (tevent_req_nomem(smbreq, req)) {
249 return tevent_req_post(req, ev);
250 }
251 state->smbreq = smbreq;
252
253 if (in_file_id_volatile != UINT64_MAX) {
254 fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
255 if (fsp == NULL) {
256 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
257 return tevent_req_post(req, ev);
258 }
259 if (smbreq->conn != fsp->conn) {
260 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
261 return tevent_req_post(req, ev);
262 }
263 if (smb2req->session->vuid != fsp->vuid) {
264 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
265 return tevent_req_post(req, ev);
266 }
267 state->fsp = fsp;
268 }
269
270 switch (in_ctl_code) {
271 case 0x00060194: /* FSCTL_DFS_GET_REFERRALS */
272 {
273 uint16_t in_max_referral_level;
274 DATA_BLOB in_file_name_buffer;
275 char *in_file_name_string;
276 size_t in_file_name_string_size;
277 bool ok;
278 bool overflow = false;
279 NTSTATUS status;
280 int dfs_size;
281 char *dfs_data = NULL;
282
283 if (!IS_IPC(smbreq->conn)) {
284 tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
285 return tevent_req_post(req, ev);
286 }
287
288 if (!lp_host_msdfs()) {
289 tevent_req_nterror(req, NT_STATUS_FS_DRIVER_REQUIRED);
290 return tevent_req_post(req, ev);
291 }
292
293 if (in_input.length < (2 + 2)) {
294 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
295 return tevent_req_post(req, ev);
296 }
297
298 in_max_referral_level = SVAL(in_input.data, 0);
299 in_file_name_buffer.data = in_input.data + 2;
300 in_file_name_buffer.length = in_input.length - 2;
301
302 ok = convert_string_talloc(state, CH_UTF16, CH_UNIX,
303 in_file_name_buffer.data,
304 in_file_name_buffer.length,
305 &in_file_name_string,
306 &in_file_name_string_size, false);
307 if (!ok) {
308 tevent_req_nterror(req, NT_STATUS_ILLEGAL_CHARACTER);
309 return tevent_req_post(req, ev);
310 }
311
312 dfs_size = setup_dfs_referral(smbreq->conn,
313 in_file_name_string,
314 in_max_referral_level,
315 &dfs_data, &status);
316 if (dfs_size < 0) {
317 tevent_req_nterror(req, status);
318 return tevent_req_post(req, ev);
319 }
320
321 if (dfs_size > in_max_output) {
322 /*
323 * TODO: we need a testsuite for this
324 */
325 overflow = true;
326 dfs_size = in_max_output;
327 }
328
329 state->out_output = data_blob_talloc(state,
330 (uint8_t *)dfs_data,
331 dfs_size);
332 SAFE_FREE(dfs_data);
333 if (dfs_size > 0 &&
334 tevent_req_nomem(state->out_output.data, req)) {
335 return tevent_req_post(req, ev);
336 }
337
338 if (overflow) {
339 tevent_req_nterror(req, STATUS_BUFFER_OVERFLOW);
340 } else {
341 tevent_req_done(req);
342 }
343 return tevent_req_post(req, ev);
344 }
345 case 0x0011C017: /* FSCTL_PIPE_TRANSCEIVE */
346
347 if (!IS_IPC(smbreq->conn)) {
348 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
349 return tevent_req_post(req, ev);
350 }
351
352 if (fsp == NULL) {
353 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
354 return tevent_req_post(req, ev);
355 }
356
357 if (!fsp_is_np(fsp)) {
358 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
359 return tevent_req_post(req, ev);
360 }
361
362 DEBUG(10,("smbd_smb2_ioctl_send: np_write_send of size %u\n",
363 (unsigned int)in_input.length ));
364
365 subreq = np_write_send(state, ev,
366 fsp->fake_file_handle,
367 in_input.data,
368 in_input.length);
369 if (tevent_req_nomem(subreq, req)) {
370 return tevent_req_post(req, ev);
371 }
372 tevent_req_set_callback(subreq,
373 smbd_smb2_ioctl_pipe_write_done,
374 req);
375 return req;
376
377 default:
378 if (IS_IPC(smbreq->conn)) {
379 tevent_req_nterror(req, NT_STATUS_FS_DRIVER_REQUIRED);
380 return tevent_req_post(req, ev);
381 }
382 tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
383 return tevent_req_post(req, ev);
384 }
385
386 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
387 return tevent_req_post(req, ev);
388 }
389
390 static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq)
391 {
392 struct tevent_req *req = tevent_req_callback_data(subreq,
393 struct tevent_req);
394 struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
395 struct smbd_smb2_ioctl_state);
396 NTSTATUS status;
397 ssize_t nwritten = -1;
398
399 status = np_write_recv(subreq, &nwritten);
400
401 DEBUG(10,("smbd_smb2_ioctl_pipe_write_done: received %ld\n",
402 (long int)nwritten ));
403
404 TALLOC_FREE(subreq);
405 if (!NT_STATUS_IS_OK(status)) {
406 tevent_req_nterror(req, status);
407 return;
408 }
409
410 if (nwritten != state->in_input.length) {
411 tevent_req_nterror(req, NT_STATUS_PIPE_NOT_AVAILABLE);
412 return;
413 }
414
415 state->out_output = data_blob_talloc(state, NULL, state->in_max_output);
416 if (state->in_max_output > 0 &&
417 tevent_req_nomem(state->out_output.data, req)) {
418 return;
419 }
420
421 DEBUG(10,("smbd_smb2_ioctl_pipe_write_done: issuing np_read_send "
422 "of size %u\n",
423 (unsigned int)state->out_output.length ));
424
425 TALLOC_FREE(subreq);
426 subreq = np_read_send(state->smbreq->conn,
427 state->smb2req->sconn->smb2.event_ctx,
428 state->fsp->fake_file_handle,
429 state->out_output.data,
430 state->out_output.length);
431 if (tevent_req_nomem(subreq, req)) {
432 return;
433 }
434 tevent_req_set_callback(subreq, smbd_smb2_ioctl_pipe_read_done, req);
435 }
436
437 static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq)
438 {
439 struct tevent_req *req = tevent_req_callback_data(subreq,
440 struct tevent_req);
441 struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
442 struct smbd_smb2_ioctl_state);
443 NTSTATUS status;
444 ssize_t nread = -1;
445 bool is_data_outstanding = false;
446
447 status = np_read_recv(subreq, &nread, &is_data_outstanding);
448
449 DEBUG(10,("smbd_smb2_ioctl_pipe_read_done: np_read_recv nread = %d "
450 "is_data_outstanding = %d, status = %s\n",
451 (int)nread,
452 (int)is_data_outstanding,
453 nt_errstr(status) ));
454
455 TALLOC_FREE(subreq);
456 if (!NT_STATUS_IS_OK(status)) {
457 tevent_req_nterror(req, status);
458 return;
459 }
460
461 state->out_output.length = nread;
462
463 tevent_req_done(req);
464 }
465
466 static NTSTATUS smbd_smb2_ioctl_recv(struct tevent_req *req,
467 TALLOC_CTX *mem_ctx,
468 DATA_BLOB *out_output)
469 {
470 NTSTATUS status = NT_STATUS_OK;
471 struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
472 struct smbd_smb2_ioctl_state);
473
474 if (tevent_req_is_nterror(req, &status)) {
475 if (!NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
476 tevent_req_received(req);
477 return status;
478 }
479 }
480
481 *out_output = state->out_output;
482 talloc_steal(mem_ctx, out_output->data);
483
484 tevent_req_received(req);
485 return status;
486 }
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