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s3:smb2_ioctl: verify credit charge
[Samba/gebeck_regimport.git] / source3 / smbd / smb2_ioctl.c
blob0d17407cf3833e6da06b979c3b9e3a46827cdb6b
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 #include "../librpc/ndr/libndr.h"
29
30 static struct tevent_req *smbd_smb2_ioctl_send(TALLOC_CTX *mem_ctx,
31 struct tevent_context *ev,
32 struct smbd_smb2_request *smb2req,
33 uint32_t in_ctl_code,
34 uint64_t in_file_id_volatile,
35 DATA_BLOB in_input,
36 uint32_t in_max_output,
37 uint32_t in_flags);
38 static NTSTATUS smbd_smb2_ioctl_recv(struct tevent_req *req,
39 TALLOC_CTX *mem_ctx,
40 DATA_BLOB *out_output,
41 bool *disconnect);
42
43 static void smbd_smb2_request_ioctl_done(struct tevent_req *subreq);
44 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req)
45 {
46 NTSTATUS status;
47 const uint8_t *inbody;
48 int i = req->current_idx;
49 uint32_t min_buffer_offset;
50 uint32_t max_buffer_offset;
51 uint32_t min_output_offset;
52 uint32_t allowed_length_in;
53 uint32_t allowed_length_out;
54 uint32_t in_ctl_code;
55 uint64_t in_file_id_persistent;
56 uint64_t in_file_id_volatile;
57 uint32_t in_input_offset;
58 uint32_t in_input_length;
59 DATA_BLOB in_input_buffer = data_blob_null;
60 uint32_t in_max_input_length;
61 uint32_t in_output_offset;
62 uint32_t in_output_length;
63 DATA_BLOB in_output_buffer = data_blob_null;
64 uint32_t in_max_output_length;
65 uint32_t in_flags;
66 uint32_t data_length_in;
67 uint32_t data_length_out;
68 uint32_t data_length_tmp;
69 uint32_t data_length_max;
70 struct tevent_req *subreq;
71
72 status = smbd_smb2_request_verify_sizes(req, 0x39);
73 if (!NT_STATUS_IS_OK(status)) {
74 return smbd_smb2_request_error(req, status);
75 }
76 inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
77
78 in_ctl_code = IVAL(inbody, 0x04);
79 in_file_id_persistent = BVAL(inbody, 0x08);
80 in_file_id_volatile = BVAL(inbody, 0x10);
81 in_input_offset = IVAL(inbody, 0x18);
82 in_input_length = IVAL(inbody, 0x1C);
83 in_max_input_length = IVAL(inbody, 0x20);
84 in_output_offset = IVAL(inbody, 0x24);
85 in_output_length = IVAL(inbody, 0x28);
86 in_max_output_length = IVAL(inbody, 0x2C);
87 in_flags = IVAL(inbody, 0x30);
88
89 min_buffer_offset = SMB2_HDR_BODY + req->in.vector[i+1].iov_len;
90 max_buffer_offset = min_buffer_offset + req->in.vector[i+2].iov_len;
91 min_output_offset = min_buffer_offset;
92
93 /*
94 * InputOffset (4 bytes): The offset, in bytes, from the beginning of
95 * the SMB2 header to the input data buffer. If no input data is
96 * required for the FSCTL/IOCTL command being issued, the client SHOULD
97 * set this value to 0.<49>
98 * <49> If no input data is required for the FSCTL/IOCTL command being
99 * issued, Windows-based clients set this field to any value.
100 */
101 allowed_length_in = 0;
102 if ((in_input_offset > 0) && (in_input_length > 0)) {
103 uint32_t tmp_ofs;
104
105 if (in_input_offset < min_buffer_offset) {
106 return smbd_smb2_request_error(req,
107 NT_STATUS_INVALID_PARAMETER);
108 }
109 if (in_input_offset > max_buffer_offset) {
110 return smbd_smb2_request_error(req,
111 NT_STATUS_INVALID_PARAMETER);
112 }
113 allowed_length_in = max_buffer_offset - in_input_offset;
114
115 tmp_ofs = in_input_offset - min_buffer_offset;
116 in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
117 in_input_buffer.data += tmp_ofs;
118 in_input_buffer.length = in_input_length;
119 min_output_offset += tmp_ofs;
120 min_output_offset += in_input_length;
121 }
122
123 if (in_input_length > allowed_length_in) {
124 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
125 }
126
127 allowed_length_out = 0;
128 if (in_output_offset > 0) {
129 if (in_output_offset < min_buffer_offset) {
130 return smbd_smb2_request_error(req,
131 NT_STATUS_INVALID_PARAMETER);
132 }
133 if (in_output_offset > max_buffer_offset) {
134 return smbd_smb2_request_error(req,
135 NT_STATUS_INVALID_PARAMETER);
136 }
137 allowed_length_out = max_buffer_offset - in_output_offset;
138 }
139
140 if (in_output_length > allowed_length_out) {
141 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
142 }
143
144 if (in_output_length > 0) {
145 uint32_t tmp_ofs;
146
147 if (in_output_offset < min_output_offset) {
148 return smbd_smb2_request_error(req,
149 NT_STATUS_INVALID_PARAMETER);
150 }
151
152 tmp_ofs = in_output_offset - min_buffer_offset;
153 in_output_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
154 in_output_buffer.data += tmp_ofs;
155 in_output_buffer.length = in_output_length;
156 }
157
158 /*
159 * verify the credits and avoid overflows
160 * in_input_buffer.length and in_output_buffer.length
161 * are already verified.
162 */
163 data_length_in = in_input_buffer.length + in_output_buffer.length;
164
165 data_length_out = in_max_input_length;
166 data_length_tmp = UINT32_MAX - data_length_out;
167 if (data_length_tmp < in_max_output_length) {
168 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
169 }
170 data_length_out += in_max_output_length;
171
172 data_length_max = MAX(data_length_in, data_length_out);
173
174 status = smbd_smb2_request_verify_creditcharge(req, data_length_max);
175 if (!NT_STATUS_IS_OK(status)) {
176 return smbd_smb2_request_error(req, status);
177 }
178
179 /*
180 * If the Flags field of the request is not SMB2_0_IOCTL_IS_FSCTL the
181 * server MUST fail the request with STATUS_NOT_SUPPORTED.
182 */
183 if (in_flags != SMB2_IOCTL_FLAG_IS_FSCTL) {
184 return smbd_smb2_request_error(req, NT_STATUS_NOT_SUPPORTED);
185 }
186
187 switch (in_ctl_code) {
188 case FSCTL_DFS_GET_REFERRALS:
189 case FSCTL_DFS_GET_REFERRALS_EX:
190 case FSCTL_PIPE_WAIT:
191 case FSCTL_VALIDATE_NEGOTIATE_INFO_224:
192 case FSCTL_VALIDATE_NEGOTIATE_INFO:
193 case FSCTL_QUERY_NETWORK_INTERFACE_INFO:
194 /*
195 * Some SMB2 specific CtlCodes like FSCTL_DFS_GET_REFERRALS or
196 * FSCTL_PIPE_WAIT does not take a file handle.
197 *
198 * If FileId in the SMB2 Header of the request is not
199 * 0xFFFFFFFFFFFFFFFF, then the server MUST fail the request
200 * with STATUS_INVALID_PARAMETER.
201 */
202 if (in_file_id_persistent != UINT64_MAX ||
203 in_file_id_volatile != UINT64_MAX) {
204 return smbd_smb2_request_error(req,
205 NT_STATUS_INVALID_PARAMETER);
206 }
207 break;
208 default:
209 if (req->compat_chain_fsp) {
210 /* skip check */
211 } else if (in_file_id_persistent != in_file_id_volatile) {
212 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
213 }
214 break;
215 }
216
217 subreq = smbd_smb2_ioctl_send(req,
218 req->sconn->ev_ctx,
219 req,
220 in_ctl_code,
221 in_file_id_volatile,
222 in_input_buffer,
223 in_max_output_length,
224 in_flags);
225 if (subreq == NULL) {
226 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
227 }
228 tevent_req_set_callback(subreq, smbd_smb2_request_ioctl_done, req);
229
230 return smbd_smb2_request_pending_queue(req, subreq, 1000);
231 }
232
233 static void smbd_smb2_request_ioctl_done(struct tevent_req *subreq)
234 {
235 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
236 struct smbd_smb2_request);
237 const uint8_t *inbody;
238 int i = req->current_idx;
239 DATA_BLOB outbody;
240 DATA_BLOB outdyn;
241 uint32_t in_ctl_code;
242 uint64_t in_file_id_persistent;
243 uint64_t in_file_id_volatile;
244 uint32_t out_input_offset;
245 uint32_t out_output_offset;
246 DATA_BLOB out_output_buffer = data_blob_null;
247 NTSTATUS status;
248 NTSTATUS error; /* transport error */
249 bool disconnect = false;
250
251 status = smbd_smb2_ioctl_recv(subreq, req,
252 &out_output_buffer,
253 &disconnect);
254
255 DEBUG(10,("smbd_smb2_request_ioctl_done: smbd_smb2_ioctl_recv returned "
256 "%u status %s\n",
257 (unsigned int)out_output_buffer.length,
258 nt_errstr(status) ));
259
260 TALLOC_FREE(subreq);
261 if (disconnect) {
262 error = status;
263 smbd_server_connection_terminate(req->sconn,
264 nt_errstr(error));
265 return;
266 }
267
268 if (NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
269 /* also ok */
270 } else if (!NT_STATUS_IS_OK(status)) {
271 error = smbd_smb2_request_error(req, status);
272 if (!NT_STATUS_IS_OK(error)) {
273 smbd_server_connection_terminate(req->sconn,
274 nt_errstr(error));
275 return;
276 }
277 return;
278 }
279
280 out_input_offset = SMB2_HDR_BODY + 0x30;
281 out_output_offset = SMB2_HDR_BODY + 0x30;
282
283 inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
284
285 in_ctl_code = IVAL(inbody, 0x04);
286 in_file_id_persistent = BVAL(inbody, 0x08);
287 in_file_id_volatile = BVAL(inbody, 0x10);
288
289 outbody = data_blob_talloc(req->out.vector, NULL, 0x30);
290 if (outbody.data == NULL) {
291 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
292 if (!NT_STATUS_IS_OK(error)) {
293 smbd_server_connection_terminate(req->sconn,
294 nt_errstr(error));
295 return;
296 }
297 return;
298 }
299
300 SSVAL(outbody.data, 0x00, 0x30 + 1); /* struct size */
301 SSVAL(outbody.data, 0x02, 0); /* reserved */
302 SIVAL(outbody.data, 0x04,
303 in_ctl_code); /* ctl code */
304 SBVAL(outbody.data, 0x08,
305 in_file_id_persistent); /* file id (persistent) */
306 SBVAL(outbody.data, 0x10,
307 in_file_id_volatile); /* file id (volatile) */
308 SIVAL(outbody.data, 0x18,
309 out_input_offset); /* input offset */
310 SIVAL(outbody.data, 0x1C, 0); /* input count */
311 SIVAL(outbody.data, 0x20,
312 out_output_offset); /* output offset */
313 SIVAL(outbody.data, 0x24,
314 out_output_buffer.length); /* output count */
315 SIVAL(outbody.data, 0x28, 0); /* flags */
316 SIVAL(outbody.data, 0x2C, 0); /* reserved */
317
318 /*
319 * Note: Windows Vista and 2008 send back also the
320 * input from the request. But it was fixed in
321 * Windows 7.
322 */
323 outdyn = out_output_buffer;
324
325 error = smbd_smb2_request_done_ex(req, status, outbody, &outdyn,
326 __location__);
327 if (!NT_STATUS_IS_OK(error)) {
328 smbd_server_connection_terminate(req->sconn,
329 nt_errstr(error));
330 return;
331 }
332 }
333
334 struct smbd_smb2_ioctl_state {
335 struct smbd_smb2_request *smb2req;
336 struct smb_request *smbreq;
337 files_struct *fsp;
338 DATA_BLOB in_input;
339 uint32_t in_max_output;
340 DATA_BLOB out_output;
341 bool disconnect;
342 };
343
344 static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq);
345 static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq);
346
347 static struct tevent_req *smbd_smb2_ioctl_send(TALLOC_CTX *mem_ctx,
348 struct tevent_context *ev,
349 struct smbd_smb2_request *smb2req,
350 uint32_t in_ctl_code,
351 uint64_t in_file_id_volatile,
352 DATA_BLOB in_input,
353 uint32_t in_max_output,
354 uint32_t in_flags)
355 {
356 struct tevent_req *req;
357 struct smbd_smb2_ioctl_state *state;
358 struct smb_request *smbreq;
359 files_struct *fsp = NULL;
360 struct tevent_req *subreq;
361
362 req = tevent_req_create(mem_ctx, &state,
363 struct smbd_smb2_ioctl_state);
364 if (req == NULL) {
365 return NULL;
366 }
367 state->smb2req = smb2req;
368 state->smbreq = NULL;
369 state->fsp = NULL;
370 state->in_input = in_input;
371 state->in_max_output = in_max_output;
372 state->out_output = data_blob_null;
373
374 DEBUG(10, ("smbd_smb2_ioctl: ctl_code[0x%08x] file_id[0x%016llX]\n",
375 (unsigned)in_ctl_code,
376 (unsigned long long)in_file_id_volatile));
377
378 smbreq = smbd_smb2_fake_smb_request(smb2req);
379 if (tevent_req_nomem(smbreq, req)) {
380 return tevent_req_post(req, ev);
381 }
382 state->smbreq = smbreq;
383
384 if (in_file_id_volatile != UINT64_MAX) {
385 fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
386 if (fsp == NULL) {
387 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
388 return tevent_req_post(req, ev);
389 }
390 if (smbreq->conn != fsp->conn) {
391 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
392 return tevent_req_post(req, ev);
393 }
394 if (smb2req->session->vuid != fsp->vuid) {
395 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
396 return tevent_req_post(req, ev);
397 }
398 state->fsp = fsp;
399 }
400
401 switch (in_ctl_code) {
402 case 0x00060194: /* FSCTL_DFS_GET_REFERRALS */
403 {
404 uint16_t in_max_referral_level;
405 DATA_BLOB in_file_name_buffer;
406 char *in_file_name_string;
407 size_t in_file_name_string_size;
408 bool ok;
409 bool overflow = false;
410 NTSTATUS status;
411 int dfs_size;
412 char *dfs_data = NULL;
413
414 if (!IS_IPC(smbreq->conn)) {
415 tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
416 return tevent_req_post(req, ev);
417 }
418
419 if (!lp_host_msdfs()) {
420 tevent_req_nterror(req, NT_STATUS_FS_DRIVER_REQUIRED);
421 return tevent_req_post(req, ev);
422 }
423
424 if (in_input.length < (2 + 2)) {
425 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
426 return tevent_req_post(req, ev);
427 }
428
429 in_max_referral_level = SVAL(in_input.data, 0);
430 in_file_name_buffer.data = in_input.data + 2;
431 in_file_name_buffer.length = in_input.length - 2;
432
433 ok = convert_string_talloc(state, CH_UTF16, CH_UNIX,
434 in_file_name_buffer.data,
435 in_file_name_buffer.length,
436 &in_file_name_string,
437 &in_file_name_string_size);
438 if (!ok) {
439 tevent_req_nterror(req, NT_STATUS_ILLEGAL_CHARACTER);
440 return tevent_req_post(req, ev);
441 }
442
443 dfs_size = setup_dfs_referral(smbreq->conn,
444 in_file_name_string,
445 in_max_referral_level,
446 &dfs_data, &status);
447 if (dfs_size < 0) {
448 tevent_req_nterror(req, status);
449 return tevent_req_post(req, ev);
450 }
451
452 if (dfs_size > in_max_output) {
453 /*
454 * TODO: we need a testsuite for this
455 */
456 overflow = true;
457 dfs_size = in_max_output;
458 }
459
460 state->out_output = data_blob_talloc(state,
461 (uint8_t *)dfs_data,
462 dfs_size);
463 SAFE_FREE(dfs_data);
464 if (dfs_size > 0 &&
465 tevent_req_nomem(state->out_output.data, req)) {
466 return tevent_req_post(req, ev);
467 }
468
469 if (overflow) {
470 tevent_req_nterror(req, STATUS_BUFFER_OVERFLOW);
471 } else {
472 tevent_req_done(req);
473 }
474 return tevent_req_post(req, ev);
475 }
476 case 0x0011C017: /* FSCTL_PIPE_TRANSCEIVE */
477
478 if (!IS_IPC(smbreq->conn)) {
479 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
480 return tevent_req_post(req, ev);
481 }
482
483 if (fsp == NULL) {
484 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
485 return tevent_req_post(req, ev);
486 }
487
488 if (!fsp_is_np(fsp)) {
489 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
490 return tevent_req_post(req, ev);
491 }
492
493 DEBUG(10,("smbd_smb2_ioctl_send: np_write_send of size %u\n",
494 (unsigned int)in_input.length ));
495
496 subreq = np_write_send(state, ev,
497 fsp->fake_file_handle,
498 in_input.data,
499 in_input.length);
500 if (tevent_req_nomem(subreq, req)) {
501 return tevent_req_post(req, ev);
502 }
503 tevent_req_set_callback(subreq,
504 smbd_smb2_ioctl_pipe_write_done,
505 req);
506 return req;
507
508 case FSCTL_VALIDATE_NEGOTIATE_INFO_224:
509 {
510 struct smbXsrv_connection *conn = smbreq->sconn->conn;
511 uint32_t in_capabilities;
512 DATA_BLOB in_guid_blob;
513 struct GUID in_guid;
514 uint16_t in_security_mode;
515 uint16_t in_max_dialect;
516 uint16_t max_dialect;
517 DATA_BLOB out_guid_blob;
518 NTSTATUS status;
519
520 if (in_input.length != 0x18) {
521 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
522 return tevent_req_post(req, ev);
523 }
524
525 if (in_max_output < 0x18) {
526 tevent_req_nterror(req, NT_STATUS_BUFFER_TOO_SMALL);
527 return tevent_req_post(req, ev);
528 }
529
530 in_capabilities = IVAL(in_input.data, 0x00);
531 in_guid_blob = data_blob_const(in_input.data + 0x04, 16);
532 in_security_mode = SVAL(in_input.data, 0x14);
533 in_max_dialect = SVAL(in_input.data, 0x16);
534
535 status = GUID_from_ndr_blob(&in_guid_blob, &in_guid);
536 if (tevent_req_nterror(req, status)) {
537 return tevent_req_post(req, ev);
538 }
539
540 max_dialect = conn->smb2.client.dialects[conn->smb2.client.num_dialects-1];
541 if (in_max_dialect != max_dialect) {
542 state->disconnect = true;
543 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
544 return tevent_req_post(req, ev);
545 }
546
547 if (!GUID_compare(&in_guid, &conn->smb2.client.guid)) {
548 state->disconnect = true;
549 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
550 return tevent_req_post(req, ev);
551 }
552
553 if (in_security_mode != conn->smb2.client.security_mode) {
554 state->disconnect = true;
555 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
556 return tevent_req_post(req, ev);
557 }
558
559 if (in_capabilities != conn->smb2.client.capabilities) {
560 state->disconnect = true;
561 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
562 return tevent_req_post(req, ev);
563 }
564
565 status = GUID_to_ndr_blob(&conn->smb2.server.guid, state,
566 &out_guid_blob);
567 if (tevent_req_nterror(req, status)) {
568 return tevent_req_post(req, ev);
569 }
570
571 state->out_output = data_blob_talloc(state, NULL, 0x18);
572 if (tevent_req_nomem(state->out_output.data, req)) {
573 return tevent_req_post(req, ev);
574 }
575
576 SIVAL(state->out_output.data, 0x00, conn->smb2.server.capabilities);
577 memcpy(state->out_output.data+0x04, out_guid_blob.data, 16);
578 SIVAL(state->out_output.data, 0x14, conn->smb2.server.security_mode);
579 SIVAL(state->out_output.data, 0x16, conn->smb2.server.dialect);
580
581 tevent_req_done(req);
582 return tevent_req_post(req, ev);
583 }
584
585 case FSCTL_VALIDATE_NEGOTIATE_INFO:
586 {
587 struct smbXsrv_connection *conn = smbreq->sconn->conn;
588 uint32_t in_capabilities;
589 DATA_BLOB in_guid_blob;
590 struct GUID in_guid;
591 uint16_t in_security_mode;
592 uint16_t in_num_dialects;
593 uint16_t i;
594 DATA_BLOB out_guid_blob;
595 NTSTATUS status;
596
597 if (in_input.length < 0x18) {
598 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
599 return tevent_req_post(req, ev);
600 }
601
602 in_capabilities = IVAL(in_input.data, 0x00);
603 in_guid_blob = data_blob_const(in_input.data + 0x04, 16);
604 in_security_mode = SVAL(in_input.data, 0x14);
605 in_num_dialects = SVAL(in_input.data, 0x16);
606
607 if (in_input.length != (0x18 + in_num_dialects*2)) {
608 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
609 return tevent_req_post(req, ev);
610 }
611
612 if (in_max_output < 0x18) {
613 tevent_req_nterror(req, NT_STATUS_BUFFER_TOO_SMALL);
614 return tevent_req_post(req, ev);
615 }
616
617 status = GUID_from_ndr_blob(&in_guid_blob, &in_guid);
618 if (tevent_req_nterror(req, status)) {
619 return tevent_req_post(req, ev);
620 }
621
622 if (in_num_dialects != conn->smb2.client.num_dialects) {
623 state->disconnect = true;
624 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
625 return tevent_req_post(req, ev);
626 }
627
628 for (i=0; i < in_num_dialects; i++) {
629 uint16_t v = SVAL(in_input.data, 0x18 + i*2);
630
631 if (conn->smb2.client.dialects[i] != v) {
632 state->disconnect = true;
633 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
634 return tevent_req_post(req, ev);
635 }
636 }
637
638 if (!GUID_compare(&in_guid, &conn->smb2.client.guid)) {
639 state->disconnect = true;
640 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
641 return tevent_req_post(req, ev);
642 }
643
644 if (in_security_mode != conn->smb2.client.security_mode) {
645 state->disconnect = true;
646 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
647 return tevent_req_post(req, ev);
648 }
649
650 if (in_capabilities != conn->smb2.client.capabilities) {
651 state->disconnect = true;
652 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
653 return tevent_req_post(req, ev);
654 }
655
656 status = GUID_to_ndr_blob(&conn->smb2.server.guid, state,
657 &out_guid_blob);
658 if (tevent_req_nterror(req, status)) {
659 return tevent_req_post(req, ev);
660 }
661
662 state->out_output = data_blob_talloc(state, NULL, 0x18);
663 if (tevent_req_nomem(state->out_output.data, req)) {
664 return tevent_req_post(req, ev);
665 }
666
667 SIVAL(state->out_output.data, 0x00, conn->smb2.server.capabilities);
668 memcpy(state->out_output.data+0x04, out_guid_blob.data, 16);
669 SIVAL(state->out_output.data, 0x14, conn->smb2.server.security_mode);
670 SIVAL(state->out_output.data, 0x16, conn->smb2.server.dialect);
671
672 tevent_req_done(req);
673 return tevent_req_post(req, ev);
674 }
675
676 default: {
677 uint8_t *out_data = NULL;
678 uint32_t out_data_len = 0;
679 NTSTATUS status;
680
681 if (fsp == NULL) {
682 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
683 return tevent_req_post(req, ev);
684 }
685
686 status = SMB_VFS_FSCTL(fsp,
687 state,
688 in_ctl_code,
689 smbreq->flags2,
690 in_input.data,
691 in_input.length,
692 &out_data,
693 in_max_output,
694 &out_data_len);
695 state->out_output = data_blob_const(out_data, out_data_len);
696 if (NT_STATUS_IS_OK(status)) {
697 tevent_req_done(req);
698 return tevent_req_post(req, ev);
699 }
700
701 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED)) {
702 if (IS_IPC(smbreq->conn)) {
703 status = NT_STATUS_FS_DRIVER_REQUIRED;
704 } else {
705 status = NT_STATUS_INVALID_DEVICE_REQUEST;
706 }
707 }
708
709 tevent_req_nterror(req, status);
710 return tevent_req_post(req, ev);
711 }
712 }
713
714 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
715 return tevent_req_post(req, ev);
716 }
717
718 static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq)
719 {
720 struct tevent_req *req = tevent_req_callback_data(subreq,
721 struct tevent_req);
722 struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
723 struct smbd_smb2_ioctl_state);
724 NTSTATUS status;
725 ssize_t nwritten = -1;
726
727 status = np_write_recv(subreq, &nwritten);
728
729 DEBUG(10,("smbd_smb2_ioctl_pipe_write_done: received %ld\n",
730 (long int)nwritten ));
731
732 TALLOC_FREE(subreq);
733 if (!NT_STATUS_IS_OK(status)) {
734 NTSTATUS old = status;
735 status = nt_status_np_pipe(old);
736 tevent_req_nterror(req, status);
737 return;
738 }
739
740 if (nwritten != state->in_input.length) {
741 tevent_req_nterror(req, NT_STATUS_PIPE_NOT_AVAILABLE);
742 return;
743 }
744
745 state->out_output = data_blob_talloc(state, NULL, state->in_max_output);
746 if (state->in_max_output > 0 &&
747 tevent_req_nomem(state->out_output.data, req)) {
748 return;
749 }
750
751 DEBUG(10,("smbd_smb2_ioctl_pipe_write_done: issuing np_read_send "
752 "of size %u\n",
753 (unsigned int)state->out_output.length ));
754
755 TALLOC_FREE(subreq);
756 subreq = np_read_send(state->smbreq->conn,
757 state->smb2req->sconn->ev_ctx,
758 state->fsp->fake_file_handle,
759 state->out_output.data,
760 state->out_output.length);
761 if (tevent_req_nomem(subreq, req)) {
762 return;
763 }
764 tevent_req_set_callback(subreq, smbd_smb2_ioctl_pipe_read_done, req);
765 }
766
767 static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq)
768 {
769 struct tevent_req *req = tevent_req_callback_data(subreq,
770 struct tevent_req);
771 struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
772 struct smbd_smb2_ioctl_state);
773 NTSTATUS status;
774 NTSTATUS old;
775 ssize_t nread = -1;
776 bool is_data_outstanding = false;
777
778 status = np_read_recv(subreq, &nread, &is_data_outstanding);
779 TALLOC_FREE(subreq);
780
781 old = status;
782 status = nt_status_np_pipe(old);
783
784 DEBUG(10,("smbd_smb2_ioctl_pipe_read_done: np_read_recv nread = %d "
785 "is_data_outstanding = %d, status = %s%s%s\n",
786 (int)nread,
787 (int)is_data_outstanding,
788 nt_errstr(old),
789 NT_STATUS_EQUAL(old, status)?"":" => ",
790 NT_STATUS_EQUAL(old, status)?"":nt_errstr(status)));
791
792 if (!NT_STATUS_IS_OK(status)) {
793 tevent_req_nterror(req, status);
794 return;
795 }
796
797 state->out_output.length = nread;
798
799 if (is_data_outstanding) {
800 tevent_req_nterror(req, STATUS_BUFFER_OVERFLOW);
801 return;
802 }
803
804 tevent_req_done(req);
805 }
806
807 static NTSTATUS smbd_smb2_ioctl_recv(struct tevent_req *req,
808 TALLOC_CTX *mem_ctx,
809 DATA_BLOB *out_output,
810 bool *disconnect)
811 {
812 NTSTATUS status = NT_STATUS_OK;
813 struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
814 struct smbd_smb2_ioctl_state);
815
816 *disconnect = state->disconnect;
817
818 if (tevent_req_is_nterror(req, &status)) {
819 if (!NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
820 tevent_req_received(req);
821 return status;
822 }
823 }
824
825 *out_output = state->out_output;
826 talloc_steal(mem_ctx, out_output->data);
827
828 tevent_req_received(req);
829 return status;
830 }
reg import