summaryrefslogtreecommitdiffstats
path: root/source3/smbd/smb2_setinfo.c
blob: f26fce77a2397bf557cd677a294d4593f1f28b8d (plain)
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
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
/*
   Unix SMB/CIFS implementation.
   Core SMB2 server

   Copyright (C) Stefan Metzmacher 2009
   Copyright (C) Jeremy Allison 2010

   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 "locking/share_mode_lock.h"
#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "../libcli/smb/smb_common.h"
#include "trans2.h"
#include "../lib/util/tevent_ntstatus.h"
#include "../librpc/gen_ndr/open_files.h"
#include "source3/lib/dbwrap/dbwrap_watch.h"
#include "messages.h"
#include "librpc/gen_ndr/ndr_quota.h"

#undef DBGC_CLASS
#define DBGC_CLASS DBGC_SMB2

static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
						 struct tevent_context *ev,
						 struct smbd_smb2_request *smb2req,
						 struct files_struct *in_fsp,
						 uint8_t in_info_type,
						 uint8_t in_file_info_class,
						 DATA_BLOB in_input_buffer,
						 uint32_t in_additional_information);
static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req);

static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq);
NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req)
{
	struct smbXsrv_connection *xconn = req->xconn;
	NTSTATUS status;
	const uint8_t *inbody;
	uint8_t in_info_type;
	uint8_t in_file_info_class;
	uint16_t in_input_buffer_offset;
	uint32_t in_input_buffer_length;
	DATA_BLOB in_input_buffer;
	uint32_t in_additional_information;
	uint64_t in_file_id_persistent;
	uint64_t in_file_id_volatile;
	struct files_struct *in_fsp;
	struct tevent_req *subreq;

	status = smbd_smb2_request_verify_sizes(req, 0x21);
	if (!NT_STATUS_IS_OK(status)) {
		return smbd_smb2_request_error(req, status);
	}
	inbody = SMBD_SMB2_IN_BODY_PTR(req);

	in_info_type			= CVAL(inbody, 0x02);
	in_file_info_class		= CVAL(inbody, 0x03);
	in_input_buffer_length		= IVAL(inbody, 0x04);
	in_input_buffer_offset		= SVAL(inbody, 0x08);
	/* 0x0A 2 bytes reserved */
	in_additional_information	= IVAL(inbody, 0x0C);
	in_file_id_persistent		= BVAL(inbody, 0x10);
	in_file_id_volatile		= BVAL(inbody, 0x18);

	if (in_input_buffer_offset == 0 && in_input_buffer_length == 0) {
		/* This is ok */
	} else if (in_input_buffer_offset !=
		   (SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(req))) {
		return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
	}

	if (in_input_buffer_length > SMBD_SMB2_IN_DYN_LEN(req)) {
		return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
	}

	in_input_buffer.data = SMBD_SMB2_IN_DYN_PTR(req);
	in_input_buffer.length = in_input_buffer_length;

	if (in_input_buffer.length > xconn->smb2.server.max_trans) {
		DEBUG(2,("smbd_smb2_request_process_setinfo: "
			 "client ignored max trans: %s: 0x%08X: 0x%08X\n",
			 __location__, (unsigned)in_input_buffer.length,
			 (unsigned)xconn->smb2.server.max_trans));
		return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
	}

	status = smbd_smb2_request_verify_creditcharge(req,
						in_input_buffer.length);
	if (!NT_STATUS_IS_OK(status)) {
		return smbd_smb2_request_error(req, status);
	}

	in_fsp = file_fsp_smb2(req, in_file_id_persistent, in_file_id_volatile);
	if (in_fsp == NULL) {
		return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
	}

	subreq = smbd_smb2_setinfo_send(req, req->sconn->ev_ctx,
					req, in_fsp,
					in_info_type,
					in_file_info_class,
					in_input_buffer,
					in_additional_information);
	if (subreq == NULL) {
		return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
	}
	tevent_req_set_callback(subreq, smbd_smb2_request_setinfo_done, req);

	return smbd_smb2_request_pending_queue(req, subreq, 500);
}

static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq)
{
	struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
					struct smbd_smb2_request);
	DATA_BLOB outbody;
	NTSTATUS status;
	NTSTATUS error; /* transport error */

	status = smbd_smb2_setinfo_recv(subreq);
	TALLOC_FREE(subreq);
	if (!NT_STATUS_IS_OK(status)) {
		error = smbd_smb2_request_error(req, status);
		if (!NT_STATUS_IS_OK(error)) {
			smbd_server_connection_terminate(req->xconn,
							 nt_errstr(error));
			return;
		}
		return;
	}

	outbody = smbd_smb2_generate_outbody(req, 0x02);
	if (outbody.data == NULL) {
		error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
		if (!NT_STATUS_IS_OK(error)) {
			smbd_server_connection_terminate(req->xconn,
							 nt_errstr(error));
			return;
		}
		return;
	}

	SSVAL(outbody.data, 0x00, 0x02);	/* struct size */

	error = smbd_smb2_request_done(req, outbody, NULL);
	if (!NT_STATUS_IS_OK(error)) {
		smbd_server_connection_terminate(req->xconn,
						 nt_errstr(error));
		return;
	}
}

struct defer_rename_state {
	struct tevent_req *req;
	struct smbd_smb2_request *smb2req;
	struct tevent_context *ev;
	struct files_struct *fsp;
	char *data;
	int data_size;
};

static int defer_rename_state_destructor(struct defer_rename_state *rename_state)
{
	SAFE_FREE(rename_state->data);
	return 0;
}

static void defer_rename_done(struct tevent_req *subreq);

struct delay_rename_lease_break_state {
	struct files_struct *fsp;
	bool delay;
};

static bool delay_rename_lease_break_fn(
	struct share_mode_entry *e,
	void *private_data)
{
	struct delay_rename_lease_break_state *state = private_data;
	struct files_struct *fsp = state->fsp;
	uint32_t e_lease_type, break_to;
	bool ours, stale;

	ours = smb2_lease_equal(fsp_client_guid(fsp),
				&fsp->lease->lease.lease_key,
				&e->client_guid,
				&e->lease_key);
	if (ours) {
		return false;
	}

	e_lease_type = get_lease_type(e, fsp->file_id);

	if ((e_lease_type & SMB2_LEASE_HANDLE) == 0) {
		return false;
	}

	stale = share_entry_stale_pid(e);
	if (stale) {
		return false;
	}

	state->delay = true;
	break_to = (e_lease_type & ~SMB2_LEASE_HANDLE);

	send_break_message(
		fsp->conn->sconn->msg_ctx, &fsp->file_id, e, break_to);

	return false;
}

static struct tevent_req *delay_rename_for_lease_break(struct tevent_req *req,
				struct smbd_smb2_request *smb2req,
				struct tevent_context *ev,
				struct files_struct *fsp,
				struct share_mode_lock *lck,
				char *data,
				int data_size)

{
	struct tevent_req *subreq;
	struct defer_rename_state *rename_state;
	struct delay_rename_lease_break_state state = { .fsp = fsp };
	struct timeval timeout;
	bool ok;

	if (fsp->oplock_type != LEASE_OPLOCK) {
		return NULL;
	}

	ok = share_mode_forall_leases(
		lck, delay_rename_lease_break_fn, &state);
	if (!ok) {
		return NULL;
	}

	if (!state.delay) {
		return NULL;
	}

	/* Setup a watch on this record. */
	rename_state = talloc_zero(req, struct defer_rename_state);
	if (rename_state == NULL) {
		return NULL;
	}

	rename_state->req = req;
	rename_state->smb2req = smb2req;
	rename_state->ev = ev;
	rename_state->fsp = fsp;
	rename_state->data = data;
	rename_state->data_size = data_size;

	talloc_set_destructor(rename_state, defer_rename_state_destructor);

	subreq = share_mode_watch_send(
				rename_state,
				ev,
				lck,
				(struct server_id){0});

	if (subreq == NULL) {
		exit_server("Could not watch share mode record for rename\n");
	}

	tevent_req_set_callback(subreq, defer_rename_done, rename_state);

	timeout = timeval_set(OPLOCK_BREAK_TIMEOUT*2, 0);
	if (!tevent_req_set_endtime(subreq,
			ev,
			timeval_sum(&smb2req->request_time, &timeout))) {
		exit_server("Could not set rename timeout\n");
	}

	return subreq;
}

static void defer_rename_done(struct tevent_req *subreq)
{
	struct defer_rename_state *state = tevent_req_callback_data(
		subreq, struct defer_rename_state);
	NTSTATUS status;
	struct share_mode_lock *lck;
	int ret_size = 0;
	bool ok;

	status = share_mode_watch_recv(subreq, NULL, NULL);
	TALLOC_FREE(subreq);
	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(5, ("dbwrap_record_watch_recv returned %s\n",
			nt_errstr(status)));
		tevent_req_nterror(state->req, status);
		return;
	}

	/*
	 * Make sure we run as the user again
	 */
	ok = change_to_user_and_service(
		state->smb2req->tcon->compat,
		state->smb2req->session->global->session_wire_id);
	if (!ok) {
		tevent_req_nterror(state->req, NT_STATUS_ACCESS_DENIED);
		return;
	}

	/* Do we still need to wait ? */
	lck = get_existing_share_mode_lock(state->req, state->fsp->file_id);
	if (lck == NULL) {
		tevent_req_nterror(state->req, NT_STATUS_UNSUCCESSFUL);
		return;
	}
	subreq = delay_rename_for_lease_break(state->req,
				state->smb2req,
				state->ev,
				state->fsp,
				lck,
				state->data,
				state->data_size);
	if (subreq) {
		/* Yep - keep waiting. */
		state->data = NULL;
		TALLOC_FREE(state);
		TALLOC_FREE(lck);
		return;
	}

	/* Do the rename under the lock. */
	status = smbd_do_setfilepathinfo(state->fsp->conn,
				state->smb2req->smb1req,
				state,
				SMB2_FILE_RENAME_INFORMATION_INTERNAL,
				state->fsp,
				state->fsp->fsp_name,
				&state->data,
				state->data_size,
				&ret_size);

	TALLOC_FREE(lck);
	SAFE_FREE(state->data);

	if (!NT_STATUS_IS_OK(status)) {
		tevent_req_nterror(state->req, status);
		return;
	}

	tevent_req_done(state->req);
}

struct smbd_smb2_setinfo_state {
	struct smbd_smb2_request *smb2req;
};

static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
						 struct tevent_context *ev,
						 struct smbd_smb2_request *smb2req,
						 struct files_struct *fsp,
						 uint8_t in_info_type,
						 uint8_t in_file_info_class,
						 DATA_BLOB in_input_buffer,
						 uint32_t in_additional_information)
{
	struct tevent_req *req = NULL;
	struct smbd_smb2_setinfo_state *state = NULL;
	struct smb_request *smbreq = NULL;
	connection_struct *conn = smb2req->tcon->compat;
	struct share_mode_lock *lck = NULL;
	NTSTATUS status;
	int ret;

	req = tevent_req_create(mem_ctx, &state,
				struct smbd_smb2_setinfo_state);
	if (req == NULL) {
		return NULL;
	}
	state->smb2req = smb2req;

	DEBUG(10,("smbd_smb2_setinfo_send: %s - %s\n",
		  fsp_str_dbg(fsp), fsp_fnum_dbg(fsp)));

	smbreq = smbd_smb2_fake_smb_request(smb2req, fsp);
	if (tevent_req_nomem(smbreq, req)) {
		return tevent_req_post(req, ev);
	}

	if (IS_IPC(conn)) {
		tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
		return tevent_req_post(req, ev);
	}

	switch (in_info_type) {
	case SMB2_0_INFO_FILE:
	{
		uint16_t file_info_level;
		char *data;
		int data_size;
		int ret_size = 0;


		file_info_level = in_file_info_class + 1000;
		if (file_info_level == SMB_FILE_RENAME_INFORMATION) {
			/* SMB2_FILE_RENAME_INFORMATION_INTERNAL == 0xFF00 + in_file_info_class */
			file_info_level = SMB2_FILE_RENAME_INFORMATION_INTERNAL;
		}

		if (fsp_get_pathref_fd(fsp) == -1) {
			/*
			 * This is actually a SETFILEINFO on a directory
			 * handle (returned from an NT SMB). NT5.0 seems
			 * to do this call. JRA.
			 */
			ret = vfs_stat(fsp->conn, fsp->fsp_name);
			if (ret != 0) {
				DBG_WARNING("vfs_stat() of %s failed (%s)\n",
					    fsp_str_dbg(fsp),
					    strerror(errno));
				status = map_nt_error_from_unix(errno);
				tevent_req_nterror(req, status);
				return tevent_req_post(req, ev);
			}
		} else if (fsp->print_file) {
			/*
			 * Doing a DELETE_ON_CLOSE should cancel a print job.
			 */
			if ((file_info_level == SMB_SET_FILE_DISPOSITION_INFO)
			    && in_input_buffer.length >= 1
			    && CVAL(in_input_buffer.data,0)) {
				fsp->fsp_flags.delete_on_close = true;

				DEBUG(3,("smbd_smb2_setinfo_send: "
					 "Cancelling print job (%s)\n",
					 fsp_str_dbg(fsp)));

				tevent_req_done(req);
				return tevent_req_post(req, ev);
			}
			tevent_req_nterror(req, NT_STATUS_OBJECT_PATH_INVALID);
			return tevent_req_post(req, ev);
		} else {
			/*
			 * Original code - this is an open file.
			 */

			status = vfs_stat_fsp(fsp);
			if (!NT_STATUS_IS_OK(status)) {
				DEBUG(3,("smbd_smb2_setinfo_send: fstat "
					 "of %s failed (%s)\n",
					 fsp_fnum_dbg(fsp),
					 nt_errstr(status)));
				tevent_req_nterror(req, status);
				return tevent_req_post(req, ev);
			}
		}

		data = NULL;
		data_size = in_input_buffer.length;
		if (data_size > 0) {
			data = (char *)SMB_MALLOC_ARRAY(char, data_size);
			if (tevent_req_nomem(data, req)) {
				return tevent_req_post(req, ev);
			}
			memcpy(data, in_input_buffer.data, data_size);
		}

		if (file_info_level == SMB2_FILE_RENAME_INFORMATION_INTERNAL) {
			struct tevent_req *subreq;

			lck = get_existing_share_mode_lock(mem_ctx,
							fsp->file_id);
			if (lck == NULL) {
				SAFE_FREE(data);
				tevent_req_nterror(req,
					NT_STATUS_UNSUCCESSFUL);
				return tevent_req_post(req, ev);
			}

			subreq = delay_rename_for_lease_break(req,
							smb2req,
							ev,
							fsp,
							lck,
							data,
							data_size);
			if (subreq) {
				/* Wait for lease break response. */

				/* Ensure we can't be closed in flight. */
				if (!aio_add_req_to_fsp(fsp, req)) {
					TALLOC_FREE(lck);
					tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
					return tevent_req_post(req, ev);
				}

				TALLOC_FREE(lck);
				return req;
			}
		}

		status = smbd_do_setfilepathinfo(conn, smbreq, state,
						 file_info_level,
						 fsp,
						 fsp->fsp_name,
						 &data,
						 data_size,
						 &ret_size);
		TALLOC_FREE(lck);
		SAFE_FREE(data);
		if (!NT_STATUS_IS_OK(status)) {
			if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
				status = NT_STATUS_INVALID_INFO_CLASS;
			}
			tevent_req_nterror(req, status);
			return tevent_req_post(req, ev);
		}
		break;
	}

	case SMB2_0_INFO_FILESYSTEM:
	{
		uint16_t file_info_level = in_file_info_class + 1000;

		status = smbd_do_setfsinfo(conn, smbreq, state,
					file_info_level,
					fsp,
					&in_input_buffer);
		if (!NT_STATUS_IS_OK(status)) {
			if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
				status = NT_STATUS_INVALID_INFO_CLASS;
			}
			tevent_req_nterror(req, status);
			return tevent_req_post(req, ev);
		}
		break;
	}

	case SMB2_0_INFO_SECURITY:
	{
		if (!CAN_WRITE(conn)) {
			tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
			return tevent_req_post(req, ev);
		}

		status = set_sd_blob(fsp,
				in_input_buffer.data,
				in_input_buffer.length,
				in_additional_information &
				SMB_SUPPORTED_SECINFO_FLAGS);
		if (!NT_STATUS_IS_OK(status)) {
			tevent_req_nterror(req, status);
			return tevent_req_post(req, ev);
		}
		break;
	}

	case SMB2_0_INFO_QUOTA:
	{
#ifdef HAVE_SYS_QUOTAS
		struct file_quota_information info = {0};
		SMB_NTQUOTA_STRUCT qt = {0};
		enum ndr_err_code err;

		if (!fsp->fake_file_handle) {
			tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
			return tevent_req_post(req, ev);
		}
		err = ndr_pull_struct_blob(
			&in_input_buffer, state, &info,
			(ndr_pull_flags_fn_t)ndr_pull_file_quota_information);
		if (!NDR_ERR_CODE_IS_SUCCESS(err)) {
			tevent_req_nterror(req, NT_STATUS_UNSUCCESSFUL);
			return tevent_req_post(req, ev);
		}

		qt.usedspace = info.quota_used;

		qt.softlim = info.quota_threshold;

		qt.hardlim = info.quota_limit;

		qt.sid = info.sid;
		ret = vfs_set_ntquota(fsp, SMB_USER_QUOTA_TYPE, &qt.sid, &qt);
		if (ret !=0 ) {
			status = map_nt_error_from_unix(errno);
			tevent_req_nterror(req, status);
			return tevent_req_post(req, ev);
		}
		status = NT_STATUS_OK;
		break;
#else
		tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
		return tevent_req_post(req, ev);
#endif
	}
	default:
		tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
		return tevent_req_post(req, ev);
	}

	tevent_req_done(req);
	return tevent_req_post(req, ev);
}

static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req)
{
	NTSTATUS status;

	if (tevent_req_is_nterror(req, &status)) {
		tevent_req_received(req);
		return status;
	}

	tevent_req_received(req);
	return NT_STATUS_OK;
}