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Fix incorrect debug - parent_name is never set !
[Samba.git] / source3 / smbd / smb2_ioctl.c
blob17b915489b05701164551d13406210da8815b3a7
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/smbd.h"
23 #include "smbd/globals.h"
24 #include "../libcli/smb/smb_common.h"
25 #include "../lib/util/tevent_ntstatus.h"
26 #include "rpc_server/srv_pipe_hnd.h"
27 #include "include/ntioctl.h"
28
29 static struct tevent_req *smbd_smb2_ioctl_send(TALLOC_CTX *mem_ctx,
30 struct tevent_context *ev,
31 struct smbd_smb2_request *smb2req,
32 uint32_t in_ctl_code,
33 uint64_t in_file_id_volatile,
34 DATA_BLOB in_input,
35 uint32_t in_max_output,
36 uint32_t in_flags);
37 static NTSTATUS smbd_smb2_ioctl_recv(struct tevent_req *req,
38 TALLOC_CTX *mem_ctx,
39 DATA_BLOB *out_output);
40
41 static void smbd_smb2_request_ioctl_done(struct tevent_req *subreq);
42 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req)
43 {
44 NTSTATUS status;
45 const uint8_t *inbody;
46 int i = req->current_idx;
47 uint32_t in_ctl_code;
48 uint64_t in_file_id_persistent;
49 uint64_t in_file_id_volatile;
50 uint32_t in_input_offset;
51 uint32_t in_input_length;
52 DATA_BLOB in_input_buffer;
53 uint32_t in_max_output_length;
54 uint32_t in_flags;
55 struct tevent_req *subreq;
56
57 status = smbd_smb2_request_verify_sizes(req, 0x39);
58 if (!NT_STATUS_IS_OK(status)) {
59 return smbd_smb2_request_error(req, status);
60 }
61 inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
62
63 in_ctl_code = IVAL(inbody, 0x04);
64 in_file_id_persistent = BVAL(inbody, 0x08);
65 in_file_id_volatile = BVAL(inbody, 0x10);
66 in_input_offset = IVAL(inbody, 0x18);
67 in_input_length = IVAL(inbody, 0x1C);
68 in_max_output_length = IVAL(inbody, 0x2C);
69 in_flags = IVAL(inbody, 0x30);
70
71 /*
72 * InputOffset (4 bytes): The offset, in bytes, from the beginning of
73 * the SMB2 header to the input data buffer. If no input data is
74 * required for the FSCTL/IOCTL command being issued, the client SHOULD
75 * set this value to 0.<49>
76 * <49> If no input data is required for the FSCTL/IOCTL command being
77 * issued, Windows-based clients set this field to any value.
78 */
79 if ((in_input_length > 0)
80 && (in_input_offset != (SMB2_HDR_BODY + req->in.vector[i+1].iov_len))) {
81 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
82 }
83
84 if (in_input_length > req->in.vector[i+2].iov_len) {
85 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
86 }
87
88 in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
89 in_input_buffer.length = in_input_length;
90
91 if (req->compat_chain_fsp) {
92 /* skip check */
93 } else if (in_file_id_persistent == UINT64_MAX &&
94 in_file_id_volatile == UINT64_MAX) {
95 /* without a handle */
96 } else if (in_file_id_persistent != in_file_id_volatile) {
97 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
98 }
99
100 subreq = smbd_smb2_ioctl_send(req,
101 req->sconn->smb2.event_ctx,
102 req,
103 in_ctl_code,
104 in_file_id_volatile,
105 in_input_buffer,
106 in_max_output_length,
107 in_flags);
108 if (subreq == NULL) {
109 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
110 }
111 tevent_req_set_callback(subreq, smbd_smb2_request_ioctl_done, req);
112
113 return smbd_smb2_request_pending_queue(req, subreq);
114 }
115
116 static void smbd_smb2_request_ioctl_done(struct tevent_req *subreq)
117 {
118 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
119 struct smbd_smb2_request);
120 const uint8_t *inbody;
121 int i = req->current_idx;
122 uint8_t *outhdr;
123 DATA_BLOB outbody;
124 DATA_BLOB outdyn;
125 uint32_t in_ctl_code;
126 uint64_t in_file_id_persistent;
127 uint64_t in_file_id_volatile;
128 uint32_t out_input_offset;
129 uint32_t out_output_offset;
130 DATA_BLOB out_output_buffer = data_blob_null;
131 NTSTATUS status;
132 NTSTATUS error; /* transport error */
133
134 status = smbd_smb2_ioctl_recv(subreq, req, &out_output_buffer);
135
136 DEBUG(10,("smbd_smb2_request_ioctl_done: smbd_smb2_ioctl_recv returned "
137 "%u status %s\n",
138 (unsigned int)out_output_buffer.length,
139 nt_errstr(status) ));
140
141 TALLOC_FREE(subreq);
142 if (NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
143 /* also ok */
144 } else if (!NT_STATUS_IS_OK(status)) {
145 error = smbd_smb2_request_error(req, status);
146 if (!NT_STATUS_IS_OK(error)) {
147 smbd_server_connection_terminate(req->sconn,
148 nt_errstr(error));
149 return;
150 }
151 return;
152 }
153
154 out_input_offset = SMB2_HDR_BODY + 0x30;
155 out_output_offset = SMB2_HDR_BODY + 0x30;
156
157 inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
158
159 in_ctl_code = IVAL(inbody, 0x04);
160 in_file_id_persistent = BVAL(inbody, 0x08);
161 in_file_id_volatile = BVAL(inbody, 0x10);
162
163 outhdr = (uint8_t *)req->out.vector[i].iov_base;
164
165 outbody = data_blob_talloc(req->out.vector, NULL, 0x30);
166 if (outbody.data == NULL) {
167 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
168 if (!NT_STATUS_IS_OK(error)) {
169 smbd_server_connection_terminate(req->sconn,
170 nt_errstr(error));
171 return;
172 }
173 return;
174 }
175
176 SSVAL(outbody.data, 0x00, 0x30 + 1); /* struct size */
177 SSVAL(outbody.data, 0x02, 0); /* reserved */
178 SIVAL(outbody.data, 0x04,
179 in_ctl_code); /* ctl code */
180 SBVAL(outbody.data, 0x08,
181 in_file_id_persistent); /* file id (persistent) */
182 SBVAL(outbody.data, 0x10,
183 in_file_id_volatile); /* file id (volatile) */
184 SIVAL(outbody.data, 0x18,
185 out_input_offset); /* input offset */
186 SIVAL(outbody.data, 0x1C, 0); /* input count */
187 SIVAL(outbody.data, 0x20,
188 out_output_offset); /* output offset */
189 SIVAL(outbody.data, 0x24,
190 out_output_buffer.length); /* output count */
191 SIVAL(outbody.data, 0x28, 0); /* flags */
192 SIVAL(outbody.data, 0x2C, 0); /* reserved */
193
194 /*
195 * Note: Windows Vista and 2008 send back also the
196 * input from the request. But it was fixed in
197 * Windows 7.
198 */
199 outdyn = out_output_buffer;
200
201 error = smbd_smb2_request_done_ex(req, status, outbody, &outdyn,
202 __location__);
203 if (!NT_STATUS_IS_OK(error)) {
204 smbd_server_connection_terminate(req->sconn,
205 nt_errstr(error));
206 return;
207 }
208 }
209
210 struct smbd_smb2_ioctl_state {
211 struct smbd_smb2_request *smb2req;
212 struct smb_request *smbreq;
213 files_struct *fsp;
214 DATA_BLOB in_input;
215 uint32_t in_max_output;
216 DATA_BLOB out_output;
217 };
218
219 static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq);
220 static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq);
221
222 static struct tevent_req *smbd_smb2_ioctl_send(TALLOC_CTX *mem_ctx,
223 struct tevent_context *ev,
224 struct smbd_smb2_request *smb2req,
225 uint32_t in_ctl_code,
226 uint64_t in_file_id_volatile,
227 DATA_BLOB in_input,
228 uint32_t in_max_output,
229 uint32_t in_flags)
230 {
231 struct tevent_req *req;
232 struct smbd_smb2_ioctl_state *state;
233 struct smb_request *smbreq;
234 files_struct *fsp = NULL;
235 struct tevent_req *subreq;
236
237 req = tevent_req_create(mem_ctx, &state,
238 struct smbd_smb2_ioctl_state);
239 if (req == NULL) {
240 return NULL;
241 }
242 state->smb2req = smb2req;
243 state->smbreq = NULL;
244 state->fsp = NULL;
245 state->in_input = in_input;
246 state->in_max_output = in_max_output;
247 state->out_output = data_blob_null;
248
249 DEBUG(10,("smbd_smb2_ioctl: file_id[0x%016llX]\n",
250 (unsigned long long)in_file_id_volatile));
251
252 smbreq = smbd_smb2_fake_smb_request(smb2req);
253 if (tevent_req_nomem(smbreq, req)) {
254 return tevent_req_post(req, ev);
255 }
256 state->smbreq = smbreq;
257
258 if (in_file_id_volatile != UINT64_MAX) {
259 fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
260 if (fsp == NULL) {
261 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
262 return tevent_req_post(req, ev);
263 }
264 if (smbreq->conn != fsp->conn) {
265 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
266 return tevent_req_post(req, ev);
267 }
268 if (smb2req->session->vuid != fsp->vuid) {
269 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
270 return tevent_req_post(req, ev);
271 }
272 state->fsp = fsp;
273 }
274
275 switch (in_ctl_code) {
276 case 0x00060194: /* FSCTL_DFS_GET_REFERRALS */
277 {
278 uint16_t in_max_referral_level;
279 DATA_BLOB in_file_name_buffer;
280 char *in_file_name_string;
281 size_t in_file_name_string_size;
282 bool ok;
283 bool overflow = false;
284 NTSTATUS status;
285 int dfs_size;
286 char *dfs_data = NULL;
287
288 if (!IS_IPC(smbreq->conn)) {
289 tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
290 return tevent_req_post(req, ev);
291 }
292
293 if (!lp_host_msdfs()) {
294 tevent_req_nterror(req, NT_STATUS_FS_DRIVER_REQUIRED);
295 return tevent_req_post(req, ev);
296 }
297
298 if (in_input.length < (2 + 2)) {
299 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
300 return tevent_req_post(req, ev);
301 }
302
303 in_max_referral_level = SVAL(in_input.data, 0);
304 in_file_name_buffer.data = in_input.data + 2;
305 in_file_name_buffer.length = in_input.length - 2;
306
307 ok = convert_string_talloc(state, CH_UTF16, CH_UNIX,
308 in_file_name_buffer.data,
309 in_file_name_buffer.length,
310 &in_file_name_string,
311 &in_file_name_string_size, false);
312 if (!ok) {
313 tevent_req_nterror(req, NT_STATUS_ILLEGAL_CHARACTER);
314 return tevent_req_post(req, ev);
315 }
316
317 dfs_size = setup_dfs_referral(smbreq->conn,
318 in_file_name_string,
319 in_max_referral_level,
320 &dfs_data, &status);
321 if (dfs_size < 0) {
322 tevent_req_nterror(req, status);
323 return tevent_req_post(req, ev);
324 }
325
326 if (dfs_size > in_max_output) {
327 /*
328 * TODO: we need a testsuite for this
329 */
330 overflow = true;
331 dfs_size = in_max_output;
332 }
333
334 state->out_output = data_blob_talloc(state,
335 (uint8_t *)dfs_data,
336 dfs_size);
337 SAFE_FREE(dfs_data);
338 if (dfs_size > 0 &&
339 tevent_req_nomem(state->out_output.data, req)) {
340 return tevent_req_post(req, ev);
341 }
342
343 if (overflow) {
344 tevent_req_nterror(req, STATUS_BUFFER_OVERFLOW);
345 } else {
346 tevent_req_done(req);
347 }
348 return tevent_req_post(req, ev);
349 }
350 case 0x0011C017: /* FSCTL_PIPE_TRANSCEIVE */
351
352 if (!IS_IPC(smbreq->conn)) {
353 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
354 return tevent_req_post(req, ev);
355 }
356
357 if (fsp == NULL) {
358 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
359 return tevent_req_post(req, ev);
360 }
361
362 if (!fsp_is_np(fsp)) {
363 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
364 return tevent_req_post(req, ev);
365 }
366
367 DEBUG(10,("smbd_smb2_ioctl_send: np_write_send of size %u\n",
368 (unsigned int)in_input.length ));
369
370 subreq = np_write_send(state, ev,
371 fsp->fake_file_handle,
372 in_input.data,
373 in_input.length);
374 if (tevent_req_nomem(subreq, req)) {
375 return tevent_req_post(req, ev);
376 }
377 tevent_req_set_callback(subreq,
378 smbd_smb2_ioctl_pipe_write_done,
379 req);
380 return req;
381
382 case 0x00144064: /* FSCTL_SRV_ENUMERATE_SNAPSHOTS */
383 {
384 /*
385 * This is called to retrieve the number of Shadow Copies (a.k.a. snapshots)
386 * and return their volume names. If max_data_count is 16, then it is just
387 * asking for the number of volumes and length of the combined names.
388 *
389 * pdata is the data allocated by our caller, but that uses
390 * total_data_count (which is 0 in our case) rather than max_data_count.
391 * Allocate the correct amount and return the pointer to let
392 * it be deallocated when we return.
393 */
394 struct shadow_copy_data *shadow_data = NULL;
395 bool labels = False;
396 uint32_t labels_data_count = 0;
397 uint32_t data_count;
398 uint32_t i;
399 char *pdata;
400 NTSTATUS status;
401
402 if (fsp == NULL) {
403 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
404 return tevent_req_post(req, ev);
405 }
406
407 if (in_max_output < 16) {
408 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: "
409 "in_max_output(%u) < 16 is invalid!\n",
410 in_max_output));
411 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
412 return tevent_req_post(req, ev);
413 }
414
415 if (in_max_output > 16) {
416 labels = True;
417 }
418
419 shadow_data = TALLOC_ZERO_P(talloc_tos(),
420 struct shadow_copy_data);
421 if (tevent_req_nomem(shadow_data, req)) {
422 DEBUG(0,("TALLOC_ZERO() failed!\n"));
423 return tevent_req_post(req, ev);
424 }
425
426 /*
427 * Call the VFS routine to actually do the work.
428 */
429 if (SMB_VFS_GET_SHADOW_COPY_DATA(fsp, shadow_data, labels)
430 != 0) {
431 if (errno == ENOSYS) {
432 DEBUG(5, ("FSCTL_GET_SHADOW_COPY_DATA: "
433 "connectpath %s, not supported.\n",
434 smbreq->conn->connectpath));
435 status = NT_STATUS_NOT_SUPPORTED;
436 } else {
437 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: "
438 "connectpath %s, failed.\n",
439 smbreq->conn->connectpath));
440 status = map_nt_error_from_unix(errno);
441 }
442 TALLOC_FREE(shadow_data);
443 tevent_req_nterror(req, status);
444 return tevent_req_post(req, ev);
445 }
446
447 labels_data_count =
448 (shadow_data->num_volumes*2*sizeof(SHADOW_COPY_LABEL))
449 + 2;
450
451 if (labels) {
452 data_count = 12+labels_data_count+4;
453 } else {
454 data_count = 16;
455 }
456
457 if (labels && (in_max_output < data_count)) {
458 DEBUG(0, ("FSCTL_GET_SHADOW_COPY_DATA: "
459 "in_max_output(%u) too small (%u) bytes "
460 "needed!\n", in_max_output, data_count));
461 TALLOC_FREE(shadow_data);
462 tevent_req_nterror(req, NT_STATUS_BUFFER_TOO_SMALL);
463 return tevent_req_post(req, ev);
464 }
465
466 state->out_output = data_blob_talloc(state, NULL, data_count);
467 if (tevent_req_nomem(state->out_output.data, req)) {
468 return tevent_req_post(req, ev);
469 }
470
471 pdata = (char *)state->out_output.data;
472
473 /* num_volumes 4 bytes */
474 SIVAL(pdata, 0, shadow_data->num_volumes);
475
476 if (labels) {
477 /* num_labels 4 bytes */
478 SIVAL(pdata, 4, shadow_data->num_volumes);
479 }
480
481 /* needed_data_count 4 bytes */
482 SIVAL(pdata, 8, labels_data_count+4);
483
484 pdata += 12;
485
486 DEBUG(10,("FSCTL_GET_SHADOW_COPY_DATA: %u volumes for "
487 "path[%s].\n",
488 shadow_data->num_volumes, fsp_str_dbg(fsp)));
489 if (labels && shadow_data->labels) {
490 for (i=0; i<shadow_data->num_volumes; i++) {
491 srvstr_push(pdata, smbreq->flags2,
492 pdata, shadow_data->labels[i],
493 2*sizeof(SHADOW_COPY_LABEL),
494 STR_UNICODE|STR_TERMINATE);
495 pdata += 2*sizeof(SHADOW_COPY_LABEL);
496 DEBUGADD(10, ("Label[%u]: '%s'\n", i,
497 shadow_data->labels[i]));
498 }
499 }
500
501 TALLOC_FREE(shadow_data);
502
503 tevent_req_done(req);
504 return tevent_req_post(req, ev);
505 }
506
507 default:
508 if (IS_IPC(smbreq->conn)) {
509 tevent_req_nterror(req, NT_STATUS_FS_DRIVER_REQUIRED);
510 return tevent_req_post(req, ev);
511 }
512 tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
513 return tevent_req_post(req, ev);
514 }
515
516 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
517 return tevent_req_post(req, ev);
518 }
519
520 static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq)
521 {
522 struct tevent_req *req = tevent_req_callback_data(subreq,
523 struct tevent_req);
524 struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
525 struct smbd_smb2_ioctl_state);
526 NTSTATUS status;
527 ssize_t nwritten = -1;
528
529 status = np_write_recv(subreq, &nwritten);
530
531 DEBUG(10,("smbd_smb2_ioctl_pipe_write_done: received %ld\n",
532 (long int)nwritten ));
533
534 TALLOC_FREE(subreq);
535 if (!NT_STATUS_IS_OK(status)) {
536 tevent_req_nterror(req, status);
537 return;
538 }
539
540 if (nwritten != state->in_input.length) {
541 tevent_req_nterror(req, NT_STATUS_PIPE_NOT_AVAILABLE);
542 return;
543 }
544
545 state->out_output = data_blob_talloc(state, NULL, state->in_max_output);
546 if (state->in_max_output > 0 &&
547 tevent_req_nomem(state->out_output.data, req)) {
548 return;
549 }
550
551 DEBUG(10,("smbd_smb2_ioctl_pipe_write_done: issuing np_read_send "
552 "of size %u\n",
553 (unsigned int)state->out_output.length ));
554
555 TALLOC_FREE(subreq);
556 subreq = np_read_send(state->smbreq->conn,
557 state->smb2req->sconn->smb2.event_ctx,
558 state->fsp->fake_file_handle,
559 state->out_output.data,
560 state->out_output.length);
561 if (tevent_req_nomem(subreq, req)) {
562 return;
563 }
564 tevent_req_set_callback(subreq, smbd_smb2_ioctl_pipe_read_done, req);
565 }
566
567 static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq)
568 {
569 struct tevent_req *req = tevent_req_callback_data(subreq,
570 struct tevent_req);
571 struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
572 struct smbd_smb2_ioctl_state);
573 NTSTATUS status;
574 ssize_t nread = -1;
575 bool is_data_outstanding = false;
576
577 status = np_read_recv(subreq, &nread, &is_data_outstanding);
578
579 DEBUG(10,("smbd_smb2_ioctl_pipe_read_done: np_read_recv nread = %d "
580 "is_data_outstanding = %d, status = %s\n",
581 (int)nread,
582 (int)is_data_outstanding,
583 nt_errstr(status) ));
584
585 TALLOC_FREE(subreq);
586 if (!NT_STATUS_IS_OK(status)) {
587 tevent_req_nterror(req, status);
588 return;
589 }
590
591 state->out_output.length = nread;
592
593 if (is_data_outstanding) {
594 tevent_req_nterror(req, STATUS_BUFFER_OVERFLOW);
595 return;
596 }
597
598 tevent_req_done(req);
599 }
600
601 static NTSTATUS smbd_smb2_ioctl_recv(struct tevent_req *req,
602 TALLOC_CTX *mem_ctx,
603 DATA_BLOB *out_output)
604 {
605 NTSTATUS status = NT_STATUS_OK;
606 struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
607 struct smbd_smb2_ioctl_state);
608
609 if (tevent_req_is_nterror(req, &status)) {
610 if (!NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
611 tevent_req_received(req);
612 return status;
613 }
614 }
615
616 *out_output = state->out_output;
617 talloc_steal(mem_ctx, out_output->data);
618
619 tevent_req_received(req);
620 return status;
621 }
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