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smbd: use smb1_strip_dfs_path() in call_nt_transact_create()
[Samba.git] / source3 / smbd / smb1_nttrans.c
blob007c53a15f6650eedbd5a80a187be156aaebbfca
1 /*
2 Unix SMB/CIFS implementation.
3 SMB NT transaction handling
4 Copyright (C) Jeremy Allison 1994-2007
5 Copyright (C) Stefan (metze) Metzmacher 2003
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 "system/filesys.h"
23 #include "smbd/smbd.h"
24 #include "smbd/globals.h"
25 #include "fake_file.h"
26 #include "../libcli/security/security.h"
27 #include "../librpc/gen_ndr/ndr_security.h"
28 #include "passdb/lookup_sid.h"
29 #include "auth.h"
30 #include "smbprofile.h"
31 #include "libsmb/libsmb.h"
32 #include "lib/util_ea.h"
33 #include "librpc/gen_ndr/ndr_quota.h"
34 #include "librpc/gen_ndr/ndr_security.h"
35
36 static char *nttrans_realloc(char **ptr, size_t size)
37 {
38 if (ptr==NULL) {
39 smb_panic("nttrans_realloc() called with NULL ptr");
40 }
41
42 *ptr = (char *)SMB_REALLOC(*ptr, size);
43 if(*ptr == NULL) {
44 return NULL;
45 }
46 memset(*ptr,'\0',size);
47 return *ptr;
48 }
49
50 /****************************************************************************
51 Send the required number of replies back.
52 We assume all fields other than the data fields are
53 set correctly for the type of call.
54 HACK ! Always assumes smb_setup field is zero.
55 ****************************************************************************/
56
57 static void send_nt_replies(connection_struct *conn,
58 struct smb_request *req, NTSTATUS nt_error,
59 char *params, int paramsize,
60 char *pdata, int datasize)
61 {
62 int data_to_send = datasize;
63 int params_to_send = paramsize;
64 int useable_space;
65 char *pp = params;
66 char *pd = pdata;
67 int params_sent_thistime, data_sent_thistime, total_sent_thistime;
68 int alignment_offset = 1;
69 int data_alignment_offset = 0;
70 struct smbXsrv_connection *xconn = req->xconn;
71 int max_send = xconn->smb1.sessions.max_send;
72
73 /*
74 * If there genuinely are no parameters or data to send just send
75 * the empty packet.
76 */
77
78 if(params_to_send == 0 && data_to_send == 0) {
79 reply_smb1_outbuf(req, 18, 0);
80 if (NT_STATUS_V(nt_error)) {
81 error_packet_set((char *)req->outbuf,
82 0, 0, nt_error,
83 __LINE__,__FILE__);
84 }
85 show_msg((char *)req->outbuf);
86 if (!smb1_srv_send(xconn,
87 (char *)req->outbuf,
88 true, req->seqnum+1,
89 IS_CONN_ENCRYPTED(conn),
90 &req->pcd)) {
91 exit_server_cleanly("send_nt_replies: smb1_srv_send failed.");
92 }
93 TALLOC_FREE(req->outbuf);
94 return;
95 }
96
97 /*
98 * When sending params and data ensure that both are nicely aligned.
99 * Only do this alignment when there is also data to send - else
100 * can cause NT redirector problems.
101 */
102
103 if (((params_to_send % 4) != 0) && (data_to_send != 0)) {
104 data_alignment_offset = 4 - (params_to_send % 4);
105 }
106
107 /*
108 * Space is bufsize minus Netbios over TCP header minus SMB header.
109 * The alignment_offset is to align the param bytes on a four byte
110 * boundary (2 bytes for data len, one byte pad).
111 * NT needs this to work correctly.
112 */
113
114 useable_space = max_send - (smb_size
115 + 2 * 18 /* wct */
116 + alignment_offset
117 + data_alignment_offset);
118
119 if (useable_space < 0) {
120 char *msg = talloc_asprintf(
121 talloc_tos(),
122 "send_nt_replies failed sanity useable_space = %d!!!",
123 useable_space);
124 DEBUG(0, ("%s\n", msg));
125 exit_server_cleanly(msg);
126 }
127
128 while (params_to_send || data_to_send) {
129
130 /*
131 * Calculate whether we will totally or partially fill this packet.
132 */
133
134 total_sent_thistime = params_to_send + data_to_send;
135
136 /*
137 * We can never send more than useable_space.
138 */
139
140 total_sent_thistime = MIN(total_sent_thistime, useable_space);
141
142 reply_smb1_outbuf(req, 18,
143 total_sent_thistime + alignment_offset
144 + data_alignment_offset);
145
146 /*
147 * Set total params and data to be sent.
148 */
149
150 SIVAL(req->outbuf,smb_ntr_TotalParameterCount,paramsize);
151 SIVAL(req->outbuf,smb_ntr_TotalDataCount,datasize);
152
153 /*
154 * Calculate how many parameters and data we can fit into
155 * this packet. Parameters get precedence.
156 */
157
158 params_sent_thistime = MIN(params_to_send,useable_space);
159 data_sent_thistime = useable_space - params_sent_thistime;
160 data_sent_thistime = MIN(data_sent_thistime,data_to_send);
161
162 SIVAL(req->outbuf, smb_ntr_ParameterCount,
163 params_sent_thistime);
164
165 if(params_sent_thistime == 0) {
166 SIVAL(req->outbuf,smb_ntr_ParameterOffset,0);
167 SIVAL(req->outbuf,smb_ntr_ParameterDisplacement,0);
168 } else {
169 /*
170 * smb_ntr_ParameterOffset is the offset from the start of the SMB header to the
171 * parameter bytes, however the first 4 bytes of outbuf are
172 * the Netbios over TCP header. Thus use smb_base() to subtract
173 * them from the calculation.
174 */
175
176 SIVAL(req->outbuf,smb_ntr_ParameterOffset,
177 ((smb_buf(req->outbuf)+alignment_offset)
178 - smb_base(req->outbuf)));
179 /*
180 * Absolute displacement of param bytes sent in this packet.
181 */
182
183 SIVAL(req->outbuf, smb_ntr_ParameterDisplacement,
184 pp - params);
185 }
186
187 /*
188 * Deal with the data portion.
189 */
190
191 SIVAL(req->outbuf, smb_ntr_DataCount, data_sent_thistime);
192
193 if(data_sent_thistime == 0) {
194 SIVAL(req->outbuf,smb_ntr_DataOffset,0);
195 SIVAL(req->outbuf,smb_ntr_DataDisplacement, 0);
196 } else {
197 /*
198 * The offset of the data bytes is the offset of the
199 * parameter bytes plus the number of parameters being sent this time.
200 */
201
202 SIVAL(req->outbuf, smb_ntr_DataOffset,
203 ((smb_buf(req->outbuf)+alignment_offset) -
204 smb_base(req->outbuf))
205 + params_sent_thistime + data_alignment_offset);
206 SIVAL(req->outbuf,smb_ntr_DataDisplacement, pd - pdata);
207 }
208
209 /*
210 * Copy the param bytes into the packet.
211 */
212
213 if(params_sent_thistime) {
214 if (alignment_offset != 0) {
215 memset(smb_buf(req->outbuf), 0,
216 alignment_offset);
217 }
218 memcpy((smb_buf(req->outbuf)+alignment_offset), pp,
219 params_sent_thistime);
220 }
221
222 /*
223 * Copy in the data bytes
224 */
225
226 if(data_sent_thistime) {
227 if (data_alignment_offset != 0) {
228 memset((smb_buf(req->outbuf)+alignment_offset+
229 params_sent_thistime), 0,
230 data_alignment_offset);
231 }
232 memcpy(smb_buf(req->outbuf)+alignment_offset
233 +params_sent_thistime+data_alignment_offset,
234 pd,data_sent_thistime);
235 }
236
237 DEBUG(9,("nt_rep: params_sent_thistime = %d, data_sent_thistime = %d, useable_space = %d\n",
238 params_sent_thistime, data_sent_thistime, useable_space));
239 DEBUG(9,("nt_rep: params_to_send = %d, data_to_send = %d, paramsize = %d, datasize = %d\n",
240 params_to_send, data_to_send, paramsize, datasize));
241
242 if (NT_STATUS_V(nt_error)) {
243 error_packet_set((char *)req->outbuf,
244 0, 0, nt_error,
245 __LINE__,__FILE__);
246 }
247
248 /* Send the packet */
249 show_msg((char *)req->outbuf);
250 if (!smb1_srv_send(xconn,
251 (char *)req->outbuf,
252 true, req->seqnum+1,
253 IS_CONN_ENCRYPTED(conn),
254 &req->pcd)) {
255 exit_server_cleanly("send_nt_replies: smb1_srv_send failed.");
256 }
257
258 TALLOC_FREE(req->outbuf);
259
260 pp += params_sent_thistime;
261 pd += data_sent_thistime;
262
263 params_to_send -= params_sent_thistime;
264 data_to_send -= data_sent_thistime;
265
266 /*
267 * Sanity check
268 */
269
270 if(params_to_send < 0 || data_to_send < 0) {
271 DEBUG(0,("send_nt_replies failed sanity check pts = %d, dts = %d\n!!!",
272 params_to_send, data_to_send));
273 exit_server_cleanly("send_nt_replies: internal error");
274 }
275 }
276 }
277
278 /****************************************************************************
279 Reply to an NT create and X call on a pipe
280 ****************************************************************************/
281
282 static void nt_open_pipe(char *fname, connection_struct *conn,
283 struct smb_request *req, uint16_t *ppnum)
284 {
285 files_struct *fsp;
286 NTSTATUS status;
287
288 DEBUG(4,("nt_open_pipe: Opening pipe %s.\n", fname));
289
290 /* Strip \\ off the name if present. */
291 while (fname[0] == '\\') {
292 fname++;
293 }
294
295 status = open_np_file(req, fname, &fsp);
296 if (!NT_STATUS_IS_OK(status)) {
297 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
298 reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND,
299 ERRDOS, ERRbadpipe);
300 return;
301 }
302 reply_nterror(req, status);
303 return;
304 }
305
306 *ppnum = fsp->fnum;
307 return;
308 }
309
310 /****************************************************************************
311 Reply to an NT create and X call for pipes.
312 ****************************************************************************/
313
314 static void do_ntcreate_pipe_open(connection_struct *conn,
315 struct smb_request *req)
316 {
317 char *fname = NULL;
318 uint16_t pnum = FNUM_FIELD_INVALID;
319 char *p = NULL;
320 uint32_t flags = IVAL(req->vwv+3, 1);
321 TALLOC_CTX *ctx = talloc_tos();
322
323 srvstr_pull_req_talloc(ctx, req, &fname, req->buf, STR_TERMINATE);
324
325 if (!fname) {
326 reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND,
327 ERRDOS, ERRbadpipe);
328 return;
329 }
330 nt_open_pipe(fname, conn, req, &pnum);
331
332 if (req->outbuf) {
333 /* error reply */
334 return;
335 }
336
337 /*
338 * Deal with pipe return.
339 */
340
341 if (flags & EXTENDED_RESPONSE_REQUIRED) {
342 /* This is very strange. We
343 * return 50 words, but only set
344 * the wcnt to 42 ? It's definitely
345 * what happens on the wire....
346 */
347 reply_smb1_outbuf(req, 50, 0);
348 SCVAL(req->outbuf,smb_wct,42);
349 } else {
350 reply_smb1_outbuf(req, 34, 0);
351 }
352
353 SSVAL(req->outbuf, smb_vwv0, 0xff); /* andx chain ends */
354 SSVAL(req->outbuf, smb_vwv1, 0); /* no andx offset */
355
356 p = (char *)req->outbuf + smb_vwv2;
357 p++;
358 SSVAL(p,0,pnum);
359 p += 2;
360 SIVAL(p,0,FILE_WAS_OPENED);
361 p += 4;
362 p += 32;
363 SIVAL(p,0,FILE_ATTRIBUTE_NORMAL); /* File Attributes. */
364 p += 20;
365 /* File type. */
366 SSVAL(p,0,FILE_TYPE_MESSAGE_MODE_PIPE);
367 /* Device state. */
368 SSVAL(p,2, 0x5FF); /* ? */
369 p += 4;
370
371 if (flags & EXTENDED_RESPONSE_REQUIRED) {
372 p += 25;
373 SIVAL(p,0,FILE_GENERIC_ALL);
374 /*
375 * For pipes W2K3 seems to return
376 * 0x12019B next.
377 * This is ((FILE_GENERIC_READ|FILE_GENERIC_WRITE) & ~FILE_APPEND_DATA)
378 */
379 SIVAL(p,4,(FILE_GENERIC_READ|FILE_GENERIC_WRITE)&~FILE_APPEND_DATA);
380 }
381
382 DEBUG(5,("do_ntcreate_pipe_open: open pipe = %s\n", fname));
383 }
384
385 struct case_semantics_state {
386 connection_struct *conn;
387 bool case_sensitive;
388 bool case_preserve;
389 bool short_case_preserve;
390 };
391
392 /****************************************************************************
393 Restore case semantics.
394 ****************************************************************************/
395
396 static int restore_case_semantics(struct case_semantics_state *state)
397 {
398 state->conn->case_sensitive = state->case_sensitive;
399 state->conn->case_preserve = state->case_preserve;
400 state->conn->short_case_preserve = state->short_case_preserve;
401 return 0;
402 }
403
404 /****************************************************************************
405 Save case semantics.
406 ****************************************************************************/
407
408 static struct case_semantics_state *set_posix_case_semantics(TALLOC_CTX *mem_ctx,
409 connection_struct *conn)
410 {
411 struct case_semantics_state *result;
412
413 if (!(result = talloc(mem_ctx, struct case_semantics_state))) {
414 return NULL;
415 }
416
417 result->conn = conn;
418 result->case_sensitive = conn->case_sensitive;
419 result->case_preserve = conn->case_preserve;
420 result->short_case_preserve = conn->short_case_preserve;
421
422 /* Set to POSIX. */
423 conn->case_sensitive = True;
424 conn->case_preserve = True;
425 conn->short_case_preserve = True;
426
427 talloc_set_destructor(result, restore_case_semantics);
428
429 return result;
430 }
431
432 /*
433 * Calculate the full path name given a relative fid.
434 */
435 static NTSTATUS get_relative_fid_filename(connection_struct *conn,
436 struct smb_request *req,
437 uint16_t root_dir_fid,
438 char *path,
439 char **path_out)
440 {
441 struct files_struct *dir_fsp = NULL;
442 char *new_path = NULL;
443
444 if (root_dir_fid == 0 || path == NULL) {
445 return NT_STATUS_INTERNAL_ERROR;
446 }
447
448 dir_fsp = file_fsp(req, root_dir_fid);
449 if (dir_fsp == NULL) {
450 return NT_STATUS_INVALID_HANDLE;
451 }
452
453 if (fsp_is_alternate_stream(dir_fsp)) {
454 return NT_STATUS_INVALID_HANDLE;
455 }
456
457 if (!dir_fsp->fsp_flags.is_directory) {
458 /*
459 * Check to see if this is a mac fork of some kind.
460 */
461 if (conn->fs_capabilities & FILE_NAMED_STREAMS) {
462 char *stream = NULL;
463
464 stream = strchr_m(path, ':');
465 if (stream != NULL) {
466 return NT_STATUS_OBJECT_PATH_NOT_FOUND;
467 }
468 }
469
470 /*
471 * We need to handle the case when we get a relative open
472 * relative to a file and the pathname is blank - this is a
473 * reopen! (hint from demyn plantenberg)
474 */
475 return NT_STATUS_INVALID_HANDLE;
476 }
477
478 if (ISDOT(dir_fsp->fsp_name->base_name)) {
479 /*
480 * We're at the toplevel dir, the final file name
481 * must not contain ./, as this is filtered out
482 * normally by srvstr_get_path and unix_convert
483 * explicitly rejects paths containing ./.
484 */
485 new_path = talloc_strdup(talloc_tos(), path);
486 } else {
487 /*
488 * Copy in the base directory name.
489 */
490
491 new_path = talloc_asprintf(talloc_tos(),
492 "%s/%s",
493 dir_fsp->fsp_name->base_name,
494 path);
495 }
496 if (new_path == NULL) {
497 return NT_STATUS_NO_MEMORY;
498 }
499
500 *path_out = new_path;
501 return NT_STATUS_OK;
502 }
503
504 /****************************************************************************
505 Reply to an NT create and X call.
506 ****************************************************************************/
507
508 void reply_ntcreate_and_X(struct smb_request *req)
509 {
510 connection_struct *conn = req->conn;
511 struct files_struct *dirfsp = NULL;
512 struct smb_filename *smb_fname = NULL;
513 char *fname = NULL;
514 uint32_t flags;
515 uint32_t access_mask;
516 uint32_t file_attributes;
517 uint32_t share_access;
518 uint32_t create_disposition;
519 uint32_t create_options;
520 uint16_t root_dir_fid;
521 uint64_t allocation_size;
522 /* Breakout the oplock request bits so we can set the
523 reply bits separately. */
524 uint32_t fattr=0;
525 off_t file_len = 0;
526 int info = 0;
527 files_struct *fsp = NULL;
528 char *p = NULL;
529 struct timespec create_timespec;
530 struct timespec c_timespec;
531 struct timespec a_timespec;
532 struct timespec m_timespec;
533 NTSTATUS status;
534 int oplock_request;
535 uint8_t oplock_granted = NO_OPLOCK_RETURN;
536 struct case_semantics_state *case_state = NULL;
537 uint32_t ucf_flags;
538 NTTIME twrp = 0;
539 TALLOC_CTX *ctx = talloc_tos();
540
541 START_PROFILE(SMBntcreateX);
542
543 if (req->wct < 24) {
544 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
545 goto out;
546 }
547
548 flags = IVAL(req->vwv+3, 1);
549 access_mask = IVAL(req->vwv+7, 1);
550 file_attributes = IVAL(req->vwv+13, 1);
551 share_access = IVAL(req->vwv+15, 1);
552 create_disposition = IVAL(req->vwv+17, 1);
553 create_options = IVAL(req->vwv+19, 1);
554 root_dir_fid = (uint16_t)IVAL(req->vwv+5, 1);
555
556 allocation_size = BVAL(req->vwv+9, 1);
557
558 srvstr_get_path_req(ctx, req, &fname, (const char *)req->buf,
559 STR_TERMINATE, &status);
560
561 if (!NT_STATUS_IS_OK(status)) {
562 reply_nterror(req, status);
563 goto out;
564 }
565
566 DEBUG(10,("reply_ntcreate_and_X: flags = 0x%x, access_mask = 0x%x "
567 "file_attributes = 0x%x, share_access = 0x%x, "
568 "create_disposition = 0x%x create_options = 0x%x "
569 "root_dir_fid = 0x%x, fname = %s\n",
570 (unsigned int)flags,
571 (unsigned int)access_mask,
572 (unsigned int)file_attributes,
573 (unsigned int)share_access,
574 (unsigned int)create_disposition,
575 (unsigned int)create_options,
576 (unsigned int)root_dir_fid,
577 fname));
578
579 /*
580 * we need to remove ignored bits when they come directly from the client
581 * because we reuse some of them for internal stuff
582 */
583 create_options &= ~NTCREATEX_OPTIONS_MUST_IGNORE_MASK;
584
585 /*
586 * If it's an IPC, use the pipe handler.
587 */
588
589 if (IS_IPC(conn)) {
590 if (lp_nt_pipe_support()) {
591 do_ntcreate_pipe_open(conn, req);
592 goto out;
593 }
594 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
595 goto out;
596 }
597
598 oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0;
599 if (oplock_request) {
600 oplock_request |= (flags & REQUEST_BATCH_OPLOCK)
601 ? BATCH_OPLOCK : 0;
602 }
603
604 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
605 case_state = set_posix_case_semantics(ctx, conn);
606 if (!case_state) {
607 reply_nterror(req, NT_STATUS_NO_MEMORY);
608 goto out;
609 }
610 }
611
612 if (root_dir_fid != 0) {
613 char *new_fname = NULL;
614
615 status = get_relative_fid_filename(conn,
616 req,
617 root_dir_fid,
618 fname,
619 &new_fname);
620 if (!NT_STATUS_IS_OK(status)) {
621 reply_nterror(req, status);
622 goto out;
623 }
624 fname = new_fname;
625 }
626
627 ucf_flags = filename_create_ucf_flags(req, create_disposition);
628 if (ucf_flags & UCF_GMT_PATHNAME) {
629 extract_snapshot_token(fname, &twrp);
630 }
631 status = smb1_strip_dfs_path(ctx, &ucf_flags, &fname);
632 if (!NT_STATUS_IS_OK(status)) {
633 reply_nterror(req, status);
634 goto out;
635 }
636
637 status = filename_convert_dirfsp(
638 ctx, conn, fname, ucf_flags, twrp, &dirfsp, &smb_fname);
639
640 TALLOC_FREE(case_state);
641
642 if (!NT_STATUS_IS_OK(status)) {
643 if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) {
644 reply_botherror(req,
645 NT_STATUS_PATH_NOT_COVERED,
646 ERRSRV, ERRbadpath);
647 goto out;
648 }
649 reply_nterror(req, status);
650 goto out;
651 }
652
653 /*
654 * Bug #6898 - clients using Windows opens should
655 * never be able to set this attribute into the
656 * VFS.
657 */
658 file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
659
660 status = SMB_VFS_CREATE_FILE(
661 conn, /* conn */
662 req, /* req */
663 dirfsp, /* dirfsp */
664 smb_fname, /* fname */
665 access_mask, /* access_mask */
666 share_access, /* share_access */
667 create_disposition, /* create_disposition*/
668 create_options, /* create_options */
669 file_attributes, /* file_attributes */
670 oplock_request, /* oplock_request */
671 NULL, /* lease */
672 allocation_size, /* allocation_size */
673 0, /* private_flags */
674 NULL, /* sd */
675 NULL, /* ea_list */
676 &fsp, /* result */
677 &info, /* pinfo */
678 NULL, NULL); /* create context */
679
680 if (!NT_STATUS_IS_OK(status)) {
681 if (open_was_deferred(req->xconn, req->mid)) {
682 /* We have re-scheduled this call, no error. */
683 goto out;
684 }
685 if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) {
686 bool ok = defer_smb1_sharing_violation(req);
687 if (ok) {
688 goto out;
689 }
690 }
691 reply_openerror(req, status);
692 goto out;
693 }
694
695 /* Ensure we're pointing at the correct stat struct. */
696 smb_fname = fsp->fsp_name;
697
698 /*
699 * If the caller set the extended oplock request bit
700 * and we granted one (by whatever means) - set the
701 * correct bit for extended oplock reply.
702 */
703
704 if (oplock_request &&
705 (lp_fake_oplocks(SNUM(conn))
706 || EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type))) {
707
708 /*
709 * Exclusive oplock granted
710 */
711
712 if (flags & REQUEST_BATCH_OPLOCK) {
713 oplock_granted = BATCH_OPLOCK_RETURN;
714 } else {
715 oplock_granted = EXCLUSIVE_OPLOCK_RETURN;
716 }
717 } else if (fsp->oplock_type == LEVEL_II_OPLOCK) {
718 oplock_granted = LEVEL_II_OPLOCK_RETURN;
719 } else {
720 oplock_granted = NO_OPLOCK_RETURN;
721 }
722
723 file_len = smb_fname->st.st_ex_size;
724
725 if (flags & EXTENDED_RESPONSE_REQUIRED) {
726 /* This is very strange. We
727 * return 50 words, but only set
728 * the wcnt to 42 ? It's definitely
729 * what happens on the wire....
730 */
731 reply_smb1_outbuf(req, 50, 0);
732 SCVAL(req->outbuf,smb_wct,42);
733 } else {
734 reply_smb1_outbuf(req, 34, 0);
735 }
736
737 SSVAL(req->outbuf, smb_vwv0, 0xff); /* andx chain ends */
738 SSVAL(req->outbuf, smb_vwv1, 0); /* no andx offset */
739
740 p = (char *)req->outbuf + smb_vwv2;
741
742 SCVAL(p, 0, oplock_granted);
743
744 p++;
745 SSVAL(p,0,fsp->fnum);
746 p += 2;
747 if ((create_disposition == FILE_SUPERSEDE)
748 && (info == FILE_WAS_OVERWRITTEN)) {
749 SIVAL(p,0,FILE_WAS_SUPERSEDED);
750 } else {
751 SIVAL(p,0,info);
752 }
753 p += 4;
754
755 fattr = fdos_mode(fsp);
756 if (fattr == 0) {
757 fattr = FILE_ATTRIBUTE_NORMAL;
758 }
759
760 /* Create time. */
761 create_timespec = get_create_timespec(conn, fsp, smb_fname);
762 a_timespec = smb_fname->st.st_ex_atime;
763 m_timespec = smb_fname->st.st_ex_mtime;
764 c_timespec = get_change_timespec(conn, fsp, smb_fname);
765
766 if (lp_dos_filetime_resolution(SNUM(conn))) {
767 dos_filetime_timespec(&create_timespec);
768 dos_filetime_timespec(&a_timespec);
769 dos_filetime_timespec(&m_timespec);
770 dos_filetime_timespec(&c_timespec);
771 }
772
773 put_long_date_full_timespec(conn->ts_res, p, &create_timespec); /* create time. */
774 p += 8;
775 put_long_date_full_timespec(conn->ts_res, p, &a_timespec); /* access time */
776 p += 8;
777 put_long_date_full_timespec(conn->ts_res, p, &m_timespec); /* write time */
778 p += 8;
779 put_long_date_full_timespec(conn->ts_res, p, &c_timespec); /* change time */
780 p += 8;
781 SIVAL(p,0,fattr); /* File Attributes. */
782 p += 4;
783 SOFF_T(p, 0, SMB_VFS_GET_ALLOC_SIZE(conn,fsp,&smb_fname->st));
784 p += 8;
785 SOFF_T(p,0,file_len);
786 p += 8;
787 if (flags & EXTENDED_RESPONSE_REQUIRED) {
788 uint16_t file_status = (NO_EAS|NO_SUBSTREAMS|NO_REPARSETAG);
789 unsigned int num_streams = 0;
790 struct stream_struct *streams = NULL;
791
792 if (lp_ea_support(SNUM(conn))) {
793 size_t num_names = 0;
794 /* Do we have any EA's ? */
795 status = get_ea_names_from_fsp(
796 ctx, smb_fname->fsp, NULL, &num_names);
797 if (NT_STATUS_IS_OK(status) && num_names) {
798 file_status &= ~NO_EAS;
799 }
800 }
801
802 status = vfs_fstreaminfo(smb_fname->fsp, ctx,
803 &num_streams, &streams);
804 /* There is always one stream, ::$DATA. */
805 if (NT_STATUS_IS_OK(status) && num_streams > 1) {
806 file_status &= ~NO_SUBSTREAMS;
807 }
808 TALLOC_FREE(streams);
809 SSVAL(p,2,file_status);
810 }
811 p += 4;
812 SCVAL(p,0,fsp->fsp_flags.is_directory ? 1 : 0);
813
814 if (flags & EXTENDED_RESPONSE_REQUIRED) {
815 uint32_t perms = 0;
816 p += 25;
817 if (fsp->fsp_flags.is_directory ||
818 fsp->fsp_flags.can_write ||
819 can_write_to_fsp(fsp))
820 {
821 perms = FILE_GENERIC_ALL;
822 } else {
823 perms = FILE_GENERIC_READ|FILE_EXECUTE;
824 }
825 SIVAL(p,0,perms);
826 }
827
828 DEBUG(5,("reply_ntcreate_and_X: %s, open name = %s\n",
829 fsp_fnum_dbg(fsp), smb_fname_str_dbg(smb_fname)));
830
831 out:
832 END_PROFILE(SMBntcreateX);
833 return;
834 }
835
836 /****************************************************************************
837 Reply to a NT_TRANSACT_CREATE call to open a pipe.
838 ****************************************************************************/
839
840 static void do_nt_transact_create_pipe(connection_struct *conn,
841 struct smb_request *req,
842 uint16_t **ppsetup, uint32_t setup_count,
843 char **ppparams, uint32_t parameter_count,
844 char **ppdata, uint32_t data_count)
845 {
846 char *fname = NULL;
847 char *params = *ppparams;
848 uint16_t pnum = FNUM_FIELD_INVALID;
849 char *p = NULL;
850 NTSTATUS status;
851 size_t param_len;
852 uint32_t flags;
853 TALLOC_CTX *ctx = talloc_tos();
854
855 /*
856 * Ensure minimum number of parameters sent.
857 */
858
859 if(parameter_count < 54) {
860 DEBUG(0,("do_nt_transact_create_pipe - insufficient parameters (%u)\n", (unsigned int)parameter_count));
861 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
862 return;
863 }
864
865 flags = IVAL(params,0);
866
867 if (req->posix_pathnames) {
868 srvstr_get_path_posix(ctx,
869 params,
870 req->flags2,
871 &fname,
872 params+53,
873 parameter_count-53,
874 STR_TERMINATE,
875 &status);
876 } else {
877 srvstr_get_path(ctx,
878 params,
879 req->flags2,
880 &fname,
881 params+53,
882 parameter_count-53,
883 STR_TERMINATE,
884 &status);
885 }
886 if (!NT_STATUS_IS_OK(status)) {
887 reply_nterror(req, status);
888 return;
889 }
890
891 nt_open_pipe(fname, conn, req, &pnum);
892
893 if (req->outbuf) {
894 /* Error return */
895 return;
896 }
897
898 /* Realloc the size of parameters and data we will return */
899 if (flags & EXTENDED_RESPONSE_REQUIRED) {
900 /* Extended response is 32 more byyes. */
901 param_len = 101;
902 } else {
903 param_len = 69;
904 }
905 params = nttrans_realloc(ppparams, param_len);
906 if(params == NULL) {
907 reply_nterror(req, NT_STATUS_NO_MEMORY);
908 return;
909 }
910
911 p = params;
912 SCVAL(p,0,NO_OPLOCK_RETURN);
913
914 p += 2;
915 SSVAL(p,0,pnum);
916 p += 2;
917 SIVAL(p,0,FILE_WAS_OPENED);
918 p += 8;
919
920 p += 32;
921 SIVAL(p,0,FILE_ATTRIBUTE_NORMAL); /* File Attributes. */
922 p += 20;
923 /* File type. */
924 SSVAL(p,0,FILE_TYPE_MESSAGE_MODE_PIPE);
925 /* Device state. */
926 SSVAL(p,2, 0x5FF); /* ? */
927 p += 4;
928
929 if (flags & EXTENDED_RESPONSE_REQUIRED) {
930 p += 25;
931 SIVAL(p,0,FILE_GENERIC_ALL);
932 /*
933 * For pipes W2K3 seems to return
934 * 0x12019B next.
935 * This is ((FILE_GENERIC_READ|FILE_GENERIC_WRITE) & ~FILE_APPEND_DATA)
936 */
937 SIVAL(p,4,(FILE_GENERIC_READ|FILE_GENERIC_WRITE)&~FILE_APPEND_DATA);
938 }
939
940 DEBUG(5,("do_nt_transact_create_pipe: open name = %s\n", fname));
941
942 /* Send the required number of replies */
943 send_nt_replies(conn, req, NT_STATUS_OK, params, param_len, *ppdata, 0);
944
945 return;
946 }
947
948 /****************************************************************************
949 Reply to a NT_TRANSACT_CREATE call (needs to process SD's).
950 ****************************************************************************/
951
952 static void call_nt_transact_create(connection_struct *conn,
953 struct smb_request *req,
954 uint16_t **ppsetup, uint32_t setup_count,
955 char **ppparams, uint32_t parameter_count,
956 char **ppdata, uint32_t data_count,
957 uint32_t max_data_count)
958 {
959 struct smb_filename *smb_fname = NULL;
960 char *fname = NULL;
961 char *params = *ppparams;
962 char *data = *ppdata;
963 /* Breakout the oplock request bits so we can set the reply bits separately. */
964 uint32_t fattr=0;
965 off_t file_len = 0;
966 int info = 0;
967 struct files_struct *dirfsp = NULL;
968 files_struct *fsp = NULL;
969 char *p = NULL;
970 uint32_t flags;
971 uint32_t access_mask;
972 uint32_t file_attributes;
973 uint32_t share_access;
974 uint32_t create_disposition;
975 uint32_t create_options;
976 uint32_t sd_len;
977 struct security_descriptor *sd = NULL;
978 uint32_t ea_len;
979 uint16_t root_dir_fid;
980 struct timespec create_timespec;
981 struct timespec c_timespec;
982 struct timespec a_timespec;
983 struct timespec m_timespec;
984 struct ea_list *ea_list = NULL;
985 NTSTATUS status;
986 size_t param_len;
987 uint64_t allocation_size;
988 int oplock_request;
989 uint8_t oplock_granted;
990 struct case_semantics_state *case_state = NULL;
991 uint32_t ucf_flags;
992 NTTIME twrp = 0;
993 TALLOC_CTX *ctx = talloc_tos();
994
995 DEBUG(5,("call_nt_transact_create\n"));
996
997 /*
998 * If it's an IPC, use the pipe handler.
999 */
1000
1001 if (IS_IPC(conn)) {
1002 if (lp_nt_pipe_support()) {
1003 do_nt_transact_create_pipe(
1004 conn, req,
1005 ppsetup, setup_count,
1006 ppparams, parameter_count,
1007 ppdata, data_count);
1008 goto out;
1009 }
1010 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
1011 goto out;
1012 }
1013
1014 /*
1015 * Ensure minimum number of parameters sent.
1016 */
1017
1018 if(parameter_count < 54) {
1019 DEBUG(0,("call_nt_transact_create - insufficient parameters (%u)\n", (unsigned int)parameter_count));
1020 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1021 goto out;
1022 }
1023
1024 flags = IVAL(params,0);
1025 access_mask = IVAL(params,8);
1026 file_attributes = IVAL(params,20);
1027 share_access = IVAL(params,24);
1028 create_disposition = IVAL(params,28);
1029 create_options = IVAL(params,32);
1030 sd_len = IVAL(params,36);
1031 ea_len = IVAL(params,40);
1032 root_dir_fid = (uint16_t)IVAL(params,4);
1033 allocation_size = BVAL(params,12);
1034
1035 /*
1036 * we need to remove ignored bits when they come directly from the client
1037 * because we reuse some of them for internal stuff
1038 */
1039 create_options &= ~NTCREATEX_OPTIONS_MUST_IGNORE_MASK;
1040
1041 if (req->posix_pathnames) {
1042 srvstr_get_path_posix(ctx,
1043 params,
1044 req->flags2,
1045 &fname,
1046 params+53,
1047 parameter_count-53,
1048 STR_TERMINATE,
1049 &status);
1050 } else {
1051 srvstr_get_path(ctx,
1052 params,
1053 req->flags2,
1054 &fname,
1055 params+53,
1056 parameter_count-53,
1057 STR_TERMINATE,
1058 &status);
1059 }
1060 if (!NT_STATUS_IS_OK(status)) {
1061 reply_nterror(req, status);
1062 goto out;
1063 }
1064
1065 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
1066 case_state = set_posix_case_semantics(ctx, conn);
1067 if (!case_state) {
1068 reply_nterror(req, NT_STATUS_NO_MEMORY);
1069 goto out;
1070 }
1071 }
1072
1073 if (root_dir_fid != 0) {
1074 char *new_fname = NULL;
1075
1076 status = get_relative_fid_filename(conn,
1077 req,
1078 root_dir_fid,
1079 fname,
1080 &new_fname);
1081 if (!NT_STATUS_IS_OK(status)) {
1082 reply_nterror(req, status);
1083 goto out;
1084 }
1085 fname = new_fname;
1086 }
1087
1088 ucf_flags = filename_create_ucf_flags(req, create_disposition);
1089 if (ucf_flags & UCF_GMT_PATHNAME) {
1090 extract_snapshot_token(fname, &twrp);
1091 }
1092 status = smb1_strip_dfs_path(ctx, &ucf_flags, &fname);
1093 if (!NT_STATUS_IS_OK(status)) {
1094 reply_nterror(req, status);
1095 goto out;
1096 }
1097
1098 status = filename_convert_dirfsp(ctx,
1099 conn,
1100 fname,
1101 ucf_flags,
1102 twrp,
1103 &dirfsp,
1104 &smb_fname);
1105
1106 TALLOC_FREE(case_state);
1107
1108 if (!NT_STATUS_IS_OK(status)) {
1109 if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) {
1110 reply_botherror(req,
1111 NT_STATUS_PATH_NOT_COVERED,
1112 ERRSRV, ERRbadpath);
1113 goto out;
1114 }
1115 reply_nterror(req, status);
1116 goto out;
1117 }
1118
1119 /* Ensure the data_len is correct for the sd and ea values given. */
1120 if ((ea_len + sd_len > data_count)
1121 || (ea_len > data_count) || (sd_len > data_count)
1122 || (ea_len + sd_len < ea_len) || (ea_len + sd_len < sd_len)) {
1123 DEBUG(10, ("call_nt_transact_create - ea_len = %u, sd_len = "
1124 "%u, data_count = %u\n", (unsigned int)ea_len,
1125 (unsigned int)sd_len, (unsigned int)data_count));
1126 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1127 goto out;
1128 }
1129
1130 if (sd_len) {
1131 DEBUG(10, ("call_nt_transact_create - sd_len = %d\n",
1132 sd_len));
1133
1134 status = unmarshall_sec_desc(ctx, (uint8_t *)data, sd_len,
1135 &sd);
1136 if (!NT_STATUS_IS_OK(status)) {
1137 DEBUG(10, ("call_nt_transact_create: "
1138 "unmarshall_sec_desc failed: %s\n",
1139 nt_errstr(status)));
1140 reply_nterror(req, status);
1141 goto out;
1142 }
1143 }
1144
1145 if (ea_len) {
1146 if (!lp_ea_support(SNUM(conn))) {
1147 DEBUG(10, ("call_nt_transact_create - ea_len = %u but "
1148 "EA's not supported.\n",
1149 (unsigned int)ea_len));
1150 reply_nterror(req, NT_STATUS_EAS_NOT_SUPPORTED);
1151 goto out;
1152 }
1153
1154 if (ea_len < 10) {
1155 DEBUG(10,("call_nt_transact_create - ea_len = %u - "
1156 "too small (should be more than 10)\n",
1157 (unsigned int)ea_len ));
1158 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1159 goto out;
1160 }
1161
1162 /* We have already checked that ea_len <= data_count here. */
1163 ea_list = read_nttrans_ea_list(talloc_tos(), data + sd_len,
1164 ea_len);
1165 if (ea_list == NULL) {
1166 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1167 goto out;
1168 }
1169
1170 if (!req->posix_pathnames &&
1171 ea_list_has_invalid_name(ea_list)) {
1172 /* Realloc the size of parameters and data we will return */
1173 if (flags & EXTENDED_RESPONSE_REQUIRED) {
1174 /* Extended response is 32 more bytes. */
1175 param_len = 101;
1176 } else {
1177 param_len = 69;
1178 }
1179 params = nttrans_realloc(ppparams, param_len);
1180 if(params == NULL) {
1181 reply_nterror(req, NT_STATUS_NO_MEMORY);
1182 goto out;
1183 }
1184
1185 memset(params, '\0', param_len);
1186 send_nt_replies(conn, req, STATUS_INVALID_EA_NAME,
1187 params, param_len, NULL, 0);
1188 goto out;
1189 }
1190 }
1191
1192 oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0;
1193 if (oplock_request) {
1194 oplock_request |= (flags & REQUEST_BATCH_OPLOCK)
1195 ? BATCH_OPLOCK : 0;
1196 }
1197
1198 /*
1199 * Bug #6898 - clients using Windows opens should
1200 * never be able to set this attribute into the
1201 * VFS.
1202 */
1203 file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
1204
1205 status = SMB_VFS_CREATE_FILE(
1206 conn, /* conn */
1207 req, /* req */
1208 dirfsp, /* dirfsp */
1209 smb_fname, /* fname */
1210 access_mask, /* access_mask */
1211 share_access, /* share_access */
1212 create_disposition, /* create_disposition*/
1213 create_options, /* create_options */
1214 file_attributes, /* file_attributes */
1215 oplock_request, /* oplock_request */
1216 NULL, /* lease */
1217 allocation_size, /* allocation_size */
1218 0, /* private_flags */
1219 sd, /* sd */
1220 ea_list, /* ea_list */
1221 &fsp, /* result */
1222 &info, /* pinfo */
1223 NULL, NULL); /* create context */
1224
1225 if(!NT_STATUS_IS_OK(status)) {
1226 if (open_was_deferred(req->xconn, req->mid)) {
1227 /* We have re-scheduled this call, no error. */
1228 return;
1229 }
1230 if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) {
1231 bool ok = defer_smb1_sharing_violation(req);
1232 if (ok) {
1233 return;
1234 }
1235 }
1236 reply_openerror(req, status);
1237 goto out;
1238 }
1239
1240 /* Ensure we're pointing at the correct stat struct. */
1241 TALLOC_FREE(smb_fname);
1242 smb_fname = fsp->fsp_name;
1243
1244 /*
1245 * If the caller set the extended oplock request bit
1246 * and we granted one (by whatever means) - set the
1247 * correct bit for extended oplock reply.
1248 */
1249
1250 if (oplock_request &&
1251 (lp_fake_oplocks(SNUM(conn))
1252 || EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type))) {
1253
1254 /*
1255 * Exclusive oplock granted
1256 */
1257
1258 if (flags & REQUEST_BATCH_OPLOCK) {
1259 oplock_granted = BATCH_OPLOCK_RETURN;
1260 } else {
1261 oplock_granted = EXCLUSIVE_OPLOCK_RETURN;
1262 }
1263 } else if (fsp->oplock_type == LEVEL_II_OPLOCK) {
1264 oplock_granted = LEVEL_II_OPLOCK_RETURN;
1265 } else {
1266 oplock_granted = NO_OPLOCK_RETURN;
1267 }
1268
1269 file_len = smb_fname->st.st_ex_size;
1270
1271 /* Realloc the size of parameters and data we will return */
1272 if (flags & EXTENDED_RESPONSE_REQUIRED) {
1273 /* Extended response is 32 more byyes. */
1274 param_len = 101;
1275 } else {
1276 param_len = 69;
1277 }
1278 params = nttrans_realloc(ppparams, param_len);
1279 if(params == NULL) {
1280 reply_nterror(req, NT_STATUS_NO_MEMORY);
1281 goto out;
1282 }
1283
1284 p = params;
1285 SCVAL(p, 0, oplock_granted);
1286
1287 p += 2;
1288 SSVAL(p,0,fsp->fnum);
1289 p += 2;
1290 if ((create_disposition == FILE_SUPERSEDE)
1291 && (info == FILE_WAS_OVERWRITTEN)) {
1292 SIVAL(p,0,FILE_WAS_SUPERSEDED);
1293 } else {
1294 SIVAL(p,0,info);
1295 }
1296 p += 8;
1297
1298 fattr = fdos_mode(fsp);
1299 if (fattr == 0) {
1300 fattr = FILE_ATTRIBUTE_NORMAL;
1301 }
1302
1303 /* Create time. */
1304 create_timespec = get_create_timespec(conn, fsp, smb_fname);
1305 a_timespec = smb_fname->st.st_ex_atime;
1306 m_timespec = smb_fname->st.st_ex_mtime;
1307 c_timespec = get_change_timespec(conn, fsp, smb_fname);
1308
1309 if (lp_dos_filetime_resolution(SNUM(conn))) {
1310 dos_filetime_timespec(&create_timespec);
1311 dos_filetime_timespec(&a_timespec);
1312 dos_filetime_timespec(&m_timespec);
1313 dos_filetime_timespec(&c_timespec);
1314 }
1315
1316 put_long_date_full_timespec(conn->ts_res, p, &create_timespec); /* create time. */
1317 p += 8;
1318 put_long_date_full_timespec(conn->ts_res, p, &a_timespec); /* access time */
1319 p += 8;
1320 put_long_date_full_timespec(conn->ts_res, p, &m_timespec); /* write time */
1321 p += 8;
1322 put_long_date_full_timespec(conn->ts_res, p, &c_timespec); /* change time */
1323 p += 8;
1324 SIVAL(p,0,fattr); /* File Attributes. */
1325 p += 4;
1326 SOFF_T(p, 0, SMB_VFS_GET_ALLOC_SIZE(conn, fsp, &smb_fname->st));
1327 p += 8;
1328 SOFF_T(p,0,file_len);
1329 p += 8;
1330 if (flags & EXTENDED_RESPONSE_REQUIRED) {
1331 uint16_t file_status = (NO_EAS|NO_SUBSTREAMS|NO_REPARSETAG);
1332 unsigned int num_streams = 0;
1333 struct stream_struct *streams = NULL;
1334
1335 if (lp_ea_support(SNUM(conn))) {
1336 size_t num_names = 0;
1337 /* Do we have any EA's ? */
1338 status = get_ea_names_from_fsp(
1339 ctx, smb_fname->fsp, NULL, &num_names);
1340 if (NT_STATUS_IS_OK(status) && num_names) {
1341 file_status &= ~NO_EAS;
1342 }
1343 }
1344
1345 status = vfs_fstreaminfo(smb_fname->fsp, ctx,
1346 &num_streams, &streams);
1347 /* There is always one stream, ::$DATA. */
1348 if (NT_STATUS_IS_OK(status) && num_streams > 1) {
1349 file_status &= ~NO_SUBSTREAMS;
1350 }
1351 TALLOC_FREE(streams);
1352 SSVAL(p,2,file_status);
1353 }
1354 p += 4;
1355 SCVAL(p,0,fsp->fsp_flags.is_directory ? 1 : 0);
1356
1357 if (flags & EXTENDED_RESPONSE_REQUIRED) {
1358 uint32_t perms = 0;
1359 p += 25;
1360 if (fsp->fsp_flags.is_directory ||
1361 fsp->fsp_flags.can_write ||
1362 can_write_to_fsp(fsp))
1363 {
1364 perms = FILE_GENERIC_ALL;
1365 } else {
1366 perms = FILE_GENERIC_READ|FILE_EXECUTE;
1367 }
1368 SIVAL(p,0,perms);
1369 }
1370
1371 DEBUG(5,("call_nt_transact_create: open name = %s\n",
1372 smb_fname_str_dbg(smb_fname)));
1373
1374 /* Send the required number of replies */
1375 send_nt_replies(conn, req, NT_STATUS_OK, params, param_len, *ppdata, 0);
1376 out:
1377 return;
1378 }
1379
1380 /****************************************************************************
1381 Reply to a NT CANCEL request.
1382 conn POINTER CAN BE NULL HERE !
1383 ****************************************************************************/
1384
1385 void reply_ntcancel(struct smb_request *req)
1386 {
1387 struct smbXsrv_connection *xconn = req->xconn;
1388 struct smbd_server_connection *sconn = req->sconn;
1389 bool found;
1390
1391 /*
1392 * Go through and cancel any pending change notifies.
1393 */
1394
1395 START_PROFILE(SMBntcancel);
1396 smb1_srv_cancel_sign_response(xconn);
1397 found = remove_pending_change_notify_requests_by_mid(sconn, req->mid);
1398 if (!found) {
1399 smbd_smb1_brl_finish_by_mid(sconn, req->mid);
1400 }
1401
1402 DEBUG(3,("reply_ntcancel: cancel called on mid = %llu.\n",
1403 (unsigned long long)req->mid));
1404
1405 END_PROFILE(SMBntcancel);
1406 return;
1407 }
1408
1409 /****************************************************************************
1410 Reply to a NT rename request.
1411 ****************************************************************************/
1412
1413 void reply_ntrename(struct smb_request *req)
1414 {
1415 connection_struct *conn = req->conn;
1416 struct files_struct *src_dirfsp = NULL;
1417 struct smb_filename *smb_fname_old = NULL;
1418 struct files_struct *dst_dirfsp = NULL;
1419 struct smb_filename *smb_fname_new = NULL;
1420 char *oldname = NULL;
1421 char *newname = NULL;
1422 const char *dst_original_lcomp = NULL;
1423 const char *p;
1424 NTSTATUS status;
1425 uint32_t attrs;
1426 uint32_t ucf_flags_src = ucf_flags_from_smb_request(req);
1427 NTTIME src_twrp = 0;
1428 uint32_t ucf_flags_dst = ucf_flags_from_smb_request(req);
1429 NTTIME dst_twrp = 0;
1430 uint16_t rename_type;
1431 TALLOC_CTX *ctx = talloc_tos();
1432 bool stream_rename = false;
1433
1434 START_PROFILE(SMBntrename);
1435
1436 if (req->wct < 4) {
1437 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1438 goto out;
1439 }
1440
1441 attrs = SVAL(req->vwv+0, 0);
1442 rename_type = SVAL(req->vwv+1, 0);
1443
1444 p = (const char *)req->buf + 1;
1445 p += srvstr_get_path_req(ctx, req, &oldname, p, STR_TERMINATE,
1446 &status);
1447 if (!NT_STATUS_IS_OK(status)) {
1448 reply_nterror(req, status);
1449 goto out;
1450 }
1451
1452 if (!req->posix_pathnames && ms_has_wild(oldname)) {
1453 reply_nterror(req, NT_STATUS_OBJECT_PATH_SYNTAX_BAD);
1454 goto out;
1455 }
1456
1457 p++;
1458 p += srvstr_get_path_req(ctx, req, &newname, p, STR_TERMINATE,
1459 &status);
1460 if (!NT_STATUS_IS_OK(status)) {
1461 reply_nterror(req, status);
1462 goto out;
1463 }
1464
1465 if (!req->posix_pathnames && ms_has_wild(newname)) {
1466 reply_nterror(req, NT_STATUS_OBJECT_PATH_SYNTAX_BAD);
1467 goto out;
1468 }
1469
1470 if (!req->posix_pathnames) {
1471 /* The newname must begin with a ':' if the
1472 oldname contains a ':'. */
1473 if (strchr_m(oldname, ':')) {
1474 if (newname[0] != ':') {
1475 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1476 goto out;
1477 }
1478 stream_rename = true;
1479 }
1480 }
1481
1482 if (ucf_flags_src & UCF_GMT_PATHNAME) {
1483 extract_snapshot_token(oldname, &src_twrp);
1484 }
1485 status = filename_convert_dirfsp(ctx,
1486 conn,
1487 oldname,
1488 ucf_flags_src,
1489 src_twrp,
1490 &src_dirfsp,
1491 &smb_fname_old);
1492 if (!NT_STATUS_IS_OK(status)) {
1493 if (NT_STATUS_EQUAL(status,
1494 NT_STATUS_PATH_NOT_COVERED)) {
1495 reply_botherror(req,
1496 NT_STATUS_PATH_NOT_COVERED,
1497 ERRSRV, ERRbadpath);
1498 goto out;
1499 }
1500 reply_nterror(req, status);
1501 goto out;
1502 }
1503
1504 if (stream_rename) {
1505 /*
1506 * No point in calling filename_convert()
1507 * on a raw stream name. It can never find
1508 * the file anyway. Use the same logic as
1509 * SMB2_FILE_RENAME_INFORMATION_INTERNAL
1510 * and generate smb_fname_new directly.
1511 */
1512 smb_fname_new = synthetic_smb_fname(talloc_tos(),
1513 smb_fname_old->base_name,
1514 newname,
1515 NULL,
1516 smb_fname_old->twrp,
1517 smb_fname_old->flags);
1518 if (smb_fname_new == NULL) {
1519 reply_nterror(req, NT_STATUS_NO_MEMORY);
1520 goto out;
1521 }
1522 } else {
1523 if (ucf_flags_dst & UCF_GMT_PATHNAME) {
1524 extract_snapshot_token(newname,
1525 &dst_twrp);
1526 }
1527 status = filename_convert_dirfsp(ctx,
1528 conn,
1529 newname,
1530 ucf_flags_dst,
1531 dst_twrp,
1532 &dst_dirfsp,
1533 &smb_fname_new);
1534 if (!NT_STATUS_IS_OK(status)) {
1535 if (NT_STATUS_EQUAL(status,
1536 NT_STATUS_PATH_NOT_COVERED)) {
1537 reply_botherror(req,
1538 NT_STATUS_PATH_NOT_COVERED,
1539 ERRSRV, ERRbadpath);
1540 goto out;
1541 }
1542 reply_nterror(req, status);
1543 goto out;
1544 }
1545 }
1546
1547 /* Get the last component of the destination for rename_internals(). */
1548 dst_original_lcomp = get_original_lcomp(ctx,
1549 conn,
1550 newname,
1551 ucf_flags_dst);
1552 if (dst_original_lcomp == NULL) {
1553 reply_nterror(req, NT_STATUS_NO_MEMORY);
1554 goto out;
1555 }
1556
1557
1558 DEBUG(3,("reply_ntrename: %s -> %s\n",
1559 smb_fname_str_dbg(smb_fname_old),
1560 smb_fname_str_dbg(smb_fname_new)));
1561
1562 switch(rename_type) {
1563 case RENAME_FLAG_RENAME:
1564 status = rename_internals(ctx,
1565 conn,
1566 req,
1567 src_dirfsp,
1568 smb_fname_old,
1569 dst_dirfsp,
1570 smb_fname_new,
1571 dst_original_lcomp,
1572 attrs,
1573 false,
1574 DELETE_ACCESS);
1575 break;
1576 case RENAME_FLAG_HARD_LINK:
1577 status = hardlink_internals(ctx,
1578 conn,
1579 req,
1580 false,
1581 src_dirfsp,
1582 smb_fname_old,
1583 dst_dirfsp,
1584 smb_fname_new);
1585 break;
1586 case RENAME_FLAG_COPY:
1587 status = copy_internals(ctx,
1588 conn,
1589 req,
1590 src_dirfsp,
1591 smb_fname_old,
1592 dst_dirfsp,
1593 smb_fname_new,
1594 attrs);
1595 break;
1596 case RENAME_FLAG_MOVE_CLUSTER_INFORMATION:
1597 status = NT_STATUS_INVALID_PARAMETER;
1598 break;
1599 default:
1600 status = NT_STATUS_ACCESS_DENIED; /* Default error. */
1601 break;
1602 }
1603
1604 if (!NT_STATUS_IS_OK(status)) {
1605 if (open_was_deferred(req->xconn, req->mid)) {
1606 /* We have re-scheduled this call. */
1607 goto out;
1608 }
1609 if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) {
1610 bool ok = defer_smb1_sharing_violation(req);
1611 if (ok) {
1612 goto out;
1613 }
1614 }
1615
1616 reply_nterror(req, status);
1617 goto out;
1618 }
1619
1620 reply_smb1_outbuf(req, 0, 0);
1621 out:
1622 END_PROFILE(SMBntrename);
1623 return;
1624 }
1625
1626 /****************************************************************************
1627 Reply to a notify change - queue the request and
1628 don't allow a directory to be opened.
1629 ****************************************************************************/
1630
1631 static void smbd_smb1_notify_reply(struct smb_request *req,
1632 NTSTATUS error_code,
1633 uint8_t *buf, size_t len)
1634 {
1635 send_nt_replies(req->conn, req, error_code, (char *)buf, len, NULL, 0);
1636 }
1637
1638 static void call_nt_transact_notify_change(connection_struct *conn,
1639 struct smb_request *req,
1640 uint16_t **ppsetup,
1641 uint32_t setup_count,
1642 char **ppparams,
1643 uint32_t parameter_count,
1644 char **ppdata, uint32_t data_count,
1645 uint32_t max_data_count,
1646 uint32_t max_param_count)
1647 {
1648 uint16_t *setup = *ppsetup;
1649 files_struct *fsp;
1650 uint32_t filter;
1651 NTSTATUS status;
1652 bool recursive;
1653
1654 if(setup_count < 6) {
1655 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1656 return;
1657 }
1658
1659 fsp = file_fsp(req, SVAL(setup,4));
1660 filter = IVAL(setup, 0);
1661 recursive = (SVAL(setup, 6) != 0) ? True : False;
1662
1663 DEBUG(3,("call_nt_transact_notify_change\n"));
1664
1665 if(!fsp) {
1666 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
1667 return;
1668 }
1669
1670 {
1671 char *filter_string;
1672
1673 if (!(filter_string = notify_filter_string(NULL, filter))) {
1674 reply_nterror(req,NT_STATUS_NO_MEMORY);
1675 return;
1676 }
1677
1678 DEBUG(3,("call_nt_transact_notify_change: notify change "
1679 "called on %s, filter = %s, recursive = %d\n",
1680 fsp_str_dbg(fsp), filter_string, recursive));
1681
1682 TALLOC_FREE(filter_string);
1683 }
1684
1685 if((!fsp->fsp_flags.is_directory) || (conn != fsp->conn)) {
1686 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1687 return;
1688 }
1689
1690 if (fsp->notify == NULL) {
1691
1692 status = change_notify_create(fsp,
1693 max_param_count,
1694 filter,
1695 recursive);
1696 if (!NT_STATUS_IS_OK(status)) {
1697 DEBUG(10, ("change_notify_create returned %s\n",
1698 nt_errstr(status)));
1699 reply_nterror(req, status);
1700 return;
1701 }
1702 }
1703
1704 if (change_notify_fsp_has_changes(fsp)) {
1705
1706 /*
1707 * We've got changes pending, respond immediately
1708 */
1709
1710 /*
1711 * TODO: write a torture test to check the filtering behaviour
1712 * here.
1713 */
1714
1715 change_notify_reply(req,
1716 NT_STATUS_OK,
1717 max_param_count,
1718 fsp->notify,
1719 smbd_smb1_notify_reply);
1720
1721 /*
1722 * change_notify_reply() above has independently sent its
1723 * results
1724 */
1725 return;
1726 }
1727
1728 /*
1729 * No changes pending, queue the request
1730 */
1731
1732 status = change_notify_add_request(req,
1733 max_param_count,
1734 filter,
1735 recursive, fsp,
1736 smbd_smb1_notify_reply);
1737 if (!NT_STATUS_IS_OK(status)) {
1738 reply_nterror(req, status);
1739 }
1740 return;
1741 }
1742
1743 /****************************************************************************
1744 Reply to an NT transact rename command.
1745 ****************************************************************************/
1746
1747 static void call_nt_transact_rename(connection_struct *conn,
1748 struct smb_request *req,
1749 uint16_t **ppsetup, uint32_t setup_count,
1750 char **ppparams, uint32_t parameter_count,
1751 char **ppdata, uint32_t data_count,
1752 uint32_t max_data_count)
1753 {
1754 char *params = *ppparams;
1755 char *new_name = NULL;
1756 files_struct *fsp = NULL;
1757 NTSTATUS status;
1758 TALLOC_CTX *ctx = talloc_tos();
1759
1760 if(parameter_count < 5) {
1761 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1762 return;
1763 }
1764
1765 fsp = file_fsp(req, SVAL(params, 0));
1766 if (!check_fsp(conn, req, fsp)) {
1767 return;
1768 }
1769 if (req->posix_pathnames) {
1770 srvstr_get_path_posix(ctx,
1771 params,
1772 req->flags2,
1773 &new_name,
1774 params+4,
1775 parameter_count - 4,
1776 STR_TERMINATE,
1777 &status);
1778 } else {
1779 srvstr_get_path(ctx,
1780 params,
1781 req->flags2,
1782 &new_name,
1783 params+4,
1784 parameter_count - 4,
1785 STR_TERMINATE,
1786 &status);
1787 }
1788
1789 if (!NT_STATUS_IS_OK(status)) {
1790 reply_nterror(req, status);
1791 return;
1792 }
1793
1794 /*
1795 * W2K3 ignores this request as the RAW-RENAME test
1796 * demonstrates, so we do.
1797 */
1798 send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0);
1799
1800 DEBUG(3,("nt transact rename from = %s, to = %s ignored!\n",
1801 fsp_str_dbg(fsp), new_name));
1802
1803 return;
1804 }
1805
1806 /****************************************************************************
1807 SMB1 reply to query a security descriptor.
1808 ****************************************************************************/
1809
1810 static void call_nt_transact_query_security_desc(connection_struct *conn,
1811 struct smb_request *req,
1812 uint16_t **ppsetup,
1813 uint32_t setup_count,
1814 char **ppparams,
1815 uint32_t parameter_count,
1816 char **ppdata,
1817 uint32_t data_count,
1818 uint32_t max_data_count)
1819 {
1820 char *params = *ppparams;
1821 char *data = *ppdata;
1822 size_t sd_size = 0;
1823 uint32_t security_info_wanted;
1824 files_struct *fsp = NULL;
1825 NTSTATUS status;
1826 uint8_t *marshalled_sd = NULL;
1827
1828 if(parameter_count < 8) {
1829 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1830 return;
1831 }
1832
1833 fsp = file_fsp(req, SVAL(params,0));
1834 if(!fsp) {
1835 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
1836 return;
1837 }
1838
1839 security_info_wanted = IVAL(params,4);
1840
1841 DEBUG(3,("call_nt_transact_query_security_desc: file = %s, "
1842 "info_wanted = 0x%x\n", fsp_str_dbg(fsp),
1843 (unsigned int)security_info_wanted));
1844
1845 params = nttrans_realloc(ppparams, 4);
1846 if(params == NULL) {
1847 reply_nterror(req, NT_STATUS_NO_MEMORY);
1848 return;
1849 }
1850
1851 /*
1852 * Get the permissions to return.
1853 */
1854
1855 status = smbd_do_query_security_desc(conn,
1856 talloc_tos(),
1857 fsp,
1858 security_info_wanted &
1859 SMB_SUPPORTED_SECINFO_FLAGS,
1860 max_data_count,
1861 &marshalled_sd,
1862 &sd_size);
1863
1864 if (NT_STATUS_EQUAL(status, NT_STATUS_BUFFER_TOO_SMALL)) {
1865 SIVAL(params,0,(uint32_t)sd_size);
1866 send_nt_replies(conn, req, NT_STATUS_BUFFER_TOO_SMALL,
1867 params, 4, NULL, 0);
1868 return;
1869 }
1870
1871 if (!NT_STATUS_IS_OK(status)) {
1872 reply_nterror(req, status);
1873 return;
1874 }
1875
1876 SMB_ASSERT(sd_size > 0);
1877
1878 SIVAL(params,0,(uint32_t)sd_size);
1879
1880 if (max_data_count < sd_size) {
1881 send_nt_replies(conn, req, NT_STATUS_BUFFER_TOO_SMALL,
1882 params, 4, NULL, 0);
1883 return;
1884 }
1885
1886 /*
1887 * Allocate the data we will return.
1888 */
1889
1890 data = nttrans_realloc(ppdata, sd_size);
1891 if(data == NULL) {
1892 reply_nterror(req, NT_STATUS_NO_MEMORY);
1893 return;
1894 }
1895
1896 memcpy(data, marshalled_sd, sd_size);
1897
1898 send_nt_replies(conn, req, NT_STATUS_OK, params, 4, data, (int)sd_size);
1899
1900 return;
1901 }
1902
1903 /****************************************************************************
1904 Reply to set a security descriptor. Map to UNIX perms or POSIX ACLs.
1905 ****************************************************************************/
1906
1907 static void call_nt_transact_set_security_desc(connection_struct *conn,
1908 struct smb_request *req,
1909 uint16_t **ppsetup,
1910 uint32_t setup_count,
1911 char **ppparams,
1912 uint32_t parameter_count,
1913 char **ppdata,
1914 uint32_t data_count,
1915 uint32_t max_data_count)
1916 {
1917 char *params= *ppparams;
1918 char *data = *ppdata;
1919 files_struct *fsp = NULL;
1920 uint32_t security_info_sent = 0;
1921 NTSTATUS status;
1922
1923 if(parameter_count < 8) {
1924 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1925 return;
1926 }
1927
1928 if((fsp = file_fsp(req, SVAL(params,0))) == NULL) {
1929 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
1930 return;
1931 }
1932
1933 if (!CAN_WRITE(fsp->conn)) {
1934 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
1935 return;
1936 }
1937
1938 if(!lp_nt_acl_support(SNUM(conn))) {
1939 goto done;
1940 }
1941
1942 security_info_sent = IVAL(params,4);
1943
1944 DEBUG(3,("call_nt_transact_set_security_desc: file = %s, sent 0x%x\n",
1945 fsp_str_dbg(fsp), (unsigned int)security_info_sent));
1946
1947 if (data_count == 0) {
1948 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1949 return;
1950 }
1951
1952 status = set_sd_blob(fsp, (uint8_t *)data, data_count,
1953 security_info_sent & SMB_SUPPORTED_SECINFO_FLAGS);
1954 if (!NT_STATUS_IS_OK(status)) {
1955 reply_nterror(req, status);
1956 return;
1957 }
1958
1959 done:
1960 send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0);
1961 return;
1962 }
1963
1964 /****************************************************************************
1965 Reply to NT IOCTL
1966 ****************************************************************************/
1967
1968 static void call_nt_transact_ioctl(connection_struct *conn,
1969 struct smb_request *req,
1970 uint16_t **ppsetup, uint32_t setup_count,
1971 char **ppparams, uint32_t parameter_count,
1972 char **ppdata, uint32_t data_count,
1973 uint32_t max_data_count)
1974 {
1975 NTSTATUS status;
1976 uint32_t function;
1977 uint16_t fidnum;
1978 files_struct *fsp;
1979 uint8_t isFSctl;
1980 uint8_t compfilter;
1981 char *out_data = NULL;
1982 uint32_t out_data_len = 0;
1983 char *pdata = *ppdata;
1984 TALLOC_CTX *ctx = talloc_tos();
1985
1986 if (setup_count != 8) {
1987 DEBUG(3,("call_nt_transact_ioctl: invalid setup count %d\n", setup_count));
1988 reply_nterror(req, NT_STATUS_NOT_SUPPORTED);
1989 return;
1990 }
1991
1992 function = IVAL(*ppsetup, 0);
1993 fidnum = SVAL(*ppsetup, 4);
1994 isFSctl = CVAL(*ppsetup, 6);
1995 compfilter = CVAL(*ppsetup, 7);
1996
1997 DEBUG(10, ("call_nt_transact_ioctl: function[0x%08X] FID[0x%04X] isFSctl[0x%02X] compfilter[0x%02X]\n",
1998 function, fidnum, isFSctl, compfilter));
1999
2000 fsp=file_fsp(req, fidnum);
2001
2002 /*
2003 * We don't really implement IOCTLs, especially on files.
2004 */
2005 if (!isFSctl) {
2006 DEBUG(10, ("isFSctl: 0x%02X indicates IOCTL, not FSCTL!\n",
2007 isFSctl));
2008 reply_nterror(req, NT_STATUS_NOT_SUPPORTED);
2009 return;
2010 }
2011
2012 /* Has to be for an open file! */
2013 if (!check_fsp_open(conn, req, fsp)) {
2014 return;
2015 }
2016
2017 SMB_PERFCOUNT_SET_IOCTL(&req->pcd, function);
2018
2019 /*
2020 * out_data might be allocated by the VFS module, but talloc should be
2021 * used, and should be cleaned up when the request ends.
2022 */
2023 status = SMB_VFS_FSCTL(fsp,
2024 ctx,
2025 function,
2026 req->flags2,
2027 (uint8_t *)pdata,
2028 data_count,
2029 (uint8_t **)&out_data,
2030 max_data_count,
2031 &out_data_len);
2032 if (!NT_STATUS_IS_OK(status)) {
2033 reply_nterror(req, status);
2034 } else {
2035 send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, out_data, out_data_len);
2036 }
2037 }
2038
2039
2040 #ifdef HAVE_SYS_QUOTAS
2041 /****************************************************************************
2042 Reply to get user quota
2043 ****************************************************************************/
2044
2045 static void call_nt_transact_get_user_quota(connection_struct *conn,
2046 struct smb_request *req,
2047 uint16_t **ppsetup,
2048 uint32_t setup_count,
2049 char **ppparams,
2050 uint32_t parameter_count,
2051 char **ppdata,
2052 uint32_t data_count,
2053 uint32_t max_data_count)
2054 {
2055 const struct loadparm_substitution *lp_sub =
2056 loadparm_s3_global_substitution();
2057 NTSTATUS nt_status = NT_STATUS_OK;
2058 char *params = *ppparams;
2059 char *pdata = *ppdata;
2060 int data_len = 0;
2061 int param_len = 0;
2062 files_struct *fsp = NULL;
2063 DATA_BLOB blob = data_blob_null;
2064 struct nttrans_query_quota_params info = {0};
2065 enum ndr_err_code err;
2066 TALLOC_CTX *tmp_ctx = NULL;
2067 uint32_t resp_len = 0;
2068 uint8_t *resp_data = 0;
2069
2070 tmp_ctx = talloc_init("ntquota_list");
2071 if (!tmp_ctx) {
2072 nt_status = NT_STATUS_NO_MEMORY;
2073 goto error;
2074 }
2075
2076 /* access check */
2077 if (get_current_uid(conn) != sec_initial_uid()) {
2078 DEBUG(1,("get_user_quota: access_denied service [%s] user "
2079 "[%s]\n", lp_servicename(talloc_tos(), lp_sub, SNUM(conn)),
2080 conn->session_info->unix_info->unix_name));
2081 nt_status = NT_STATUS_ACCESS_DENIED;
2082 goto error;
2083 }
2084
2085 blob.data = (uint8_t*)params;
2086 blob.length = parameter_count;
2087
2088 err = ndr_pull_struct_blob(&blob, tmp_ctx, &info,
2089 (ndr_pull_flags_fn_t)ndr_pull_nttrans_query_quota_params);
2090
2091 if (!NDR_ERR_CODE_IS_SUCCESS(err)) {
2092 DEBUG(0,("TRANSACT_GET_USER_QUOTA: failed to pull "
2093 "query_quota_params."));
2094 nt_status = NT_STATUS_INVALID_PARAMETER;
2095 goto error;
2096 }
2097 DBG_DEBUG("info.return_single_entry = %u, info.restart_scan = %u, "
2098 "info.sid_list_length = %u, info.start_sid_length = %u, "
2099 "info.start_sid_offset = %u\n",
2100 (unsigned int)info.return_single_entry,
2101 (unsigned int)info.restart_scan,
2102 (unsigned int)info.sid_list_length,
2103 (unsigned int)info.start_sid_length,
2104 (unsigned int)info.start_sid_offset);
2105
2106 /* set blob to point at data for further parsing */
2107 blob.data = (uint8_t*)pdata;
2108 blob.length = data_count;
2109 /*
2110 * Although MS-SMB ref is ambiguous here, a microsoft client will
2111 * only ever send a start sid (as part of a list) with
2112 * sid_list_length & start_sid_offset both set to the actual list
2113 * length. Note: Only a single result is returned in this case
2114 * In the case where either start_sid_offset or start_sid_length
2115 * are set alone or if both set (but have different values) then
2116 * it seems windows will return a number of entries from the start
2117 * of the list of users with quotas set. This behaviour is undocumented
2118 * and windows clients do not send messages of that type. As such we
2119 * currently will reject these requests.
2120 */
2121 if (info.start_sid_length
2122 || (info.sid_list_length != info.start_sid_offset)) {
2123 DBG_ERR("TRANSACT_GET_USER_QUOTA: unsupported single or "
2124 "compound sid format\n");
2125 nt_status = NT_STATUS_INVALID_PARAMETER;
2126 goto error;
2127 }
2128
2129 /* maybe we can check the quota_fnum */
2130 fsp = file_fsp(req, info.fid);
2131 if (!check_fsp_ntquota_handle(conn, req, fsp)) {
2132 DEBUG(3,("TRANSACT_GET_USER_QUOTA: no valid QUOTA HANDLE\n"));
2133 nt_status = NT_STATUS_INVALID_HANDLE;
2134 goto error;
2135 }
2136 nt_status = smbd_do_query_getinfo_quota(tmp_ctx,
2137 fsp,
2138 info.restart_scan,
2139 info.return_single_entry,
2140 info.sid_list_length,
2141 &blob,
2142 max_data_count,
2143 &resp_data,
2144 &resp_len);
2145 if (!NT_STATUS_IS_OK(nt_status)) {
2146 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MORE_ENTRIES)) {
2147 goto error;
2148 }
2149 nt_status = NT_STATUS_OK;
2150 }
2151
2152 param_len = 4;
2153 params = nttrans_realloc(ppparams, param_len);
2154 if(params == NULL) {
2155 nt_status = NT_STATUS_NO_MEMORY;
2156 goto error;
2157 }
2158
2159 data_len = resp_len;
2160 SIVAL(params, 0, data_len);
2161 pdata = nttrans_realloc(ppdata, data_len);
2162 memcpy(pdata, resp_data, data_len);
2163
2164 TALLOC_FREE(tmp_ctx);
2165 send_nt_replies(conn, req, nt_status, params, param_len,
2166 pdata, data_len);
2167 return;
2168 error:
2169 TALLOC_FREE(tmp_ctx);
2170 reply_nterror(req, nt_status);
2171 }
2172
2173 /****************************************************************************
2174 Reply to set user quota
2175 ****************************************************************************/
2176
2177 static void call_nt_transact_set_user_quota(connection_struct *conn,
2178 struct smb_request *req,
2179 uint16_t **ppsetup,
2180 uint32_t setup_count,
2181 char **ppparams,
2182 uint32_t parameter_count,
2183 char **ppdata,
2184 uint32_t data_count,
2185 uint32_t max_data_count)
2186 {
2187 const struct loadparm_substitution *lp_sub =
2188 loadparm_s3_global_substitution();
2189 char *params = *ppparams;
2190 char *pdata = *ppdata;
2191 int data_len=0,param_len=0;
2192 SMB_NTQUOTA_STRUCT qt;
2193 struct file_quota_information info = {0};
2194 enum ndr_err_code err;
2195 struct dom_sid sid;
2196 DATA_BLOB inblob;
2197 files_struct *fsp = NULL;
2198 TALLOC_CTX *ctx = NULL;
2199 NTSTATUS status = NT_STATUS_OK;
2200 ZERO_STRUCT(qt);
2201
2202 /* access check */
2203 if (get_current_uid(conn) != sec_initial_uid()) {
2204 DEBUG(1,("set_user_quota: access_denied service [%s] user "
2205 "[%s]\n", lp_servicename(talloc_tos(), lp_sub, SNUM(conn)),
2206 conn->session_info->unix_info->unix_name));
2207 status = NT_STATUS_ACCESS_DENIED;
2208 goto error;
2209 }
2210
2211 /*
2212 * Ensure minimum number of parameters sent.
2213 */
2214
2215 if (parameter_count < 2) {
2216 DEBUG(0,("TRANSACT_SET_USER_QUOTA: requires %d >= 2 bytes parameters\n",parameter_count));
2217 status = NT_STATUS_INVALID_PARAMETER;
2218 goto error;
2219 }
2220
2221 /* maybe we can check the quota_fnum */
2222 fsp = file_fsp(req, SVAL(params,0));
2223 if (!check_fsp_ntquota_handle(conn, req, fsp)) {
2224 DEBUG(3,("TRANSACT_GET_USER_QUOTA: no valid QUOTA HANDLE\n"));
2225 status = NT_STATUS_INVALID_HANDLE;
2226 goto error;
2227 }
2228
2229 ctx = talloc_init("set_user_quota");
2230 if (!ctx) {
2231 status = NT_STATUS_NO_MEMORY;
2232 goto error;
2233 }
2234 inblob.data = (uint8_t*)pdata;
2235 inblob.length = data_count;
2236
2237 err = ndr_pull_struct_blob(
2238 &inblob,
2239 ctx,
2240 &info,
2241 (ndr_pull_flags_fn_t)ndr_pull_file_quota_information);
2242
2243 if (!NDR_ERR_CODE_IS_SUCCESS(err)) {
2244 DEBUG(0,("TRANSACT_SET_USER_QUOTA: failed to pull "
2245 "file_quota_information\n"));
2246 status = NT_STATUS_INVALID_PARAMETER;
2247 goto error;
2248 }
2249 qt.usedspace = info.quota_used;
2250
2251 qt.softlim = info.quota_threshold;
2252
2253 qt.hardlim = info.quota_limit;
2254
2255 sid = info.sid;
2256
2257 if (vfs_set_ntquota(fsp, SMB_USER_QUOTA_TYPE, &sid, &qt)!=0) {
2258 status = NT_STATUS_INTERNAL_ERROR;
2259 goto error;
2260 }
2261
2262 send_nt_replies(conn, req, NT_STATUS_OK, params, param_len,
2263 pdata, data_len);
2264 TALLOC_FREE(ctx);
2265 return;
2266 error:
2267 TALLOC_FREE(ctx);
2268 reply_nterror(req, status);
2269 }
2270 #endif /* HAVE_SYS_QUOTAS */
2271
2272 static void handle_nttrans(connection_struct *conn,
2273 struct trans_state *state,
2274 struct smb_request *req)
2275 {
2276 if (get_Protocol() >= PROTOCOL_NT1) {
2277 req->flags2 |= 0x40; /* IS_LONG_NAME */
2278 SSVAL(discard_const_p(uint8_t, req->inbuf),smb_flg2,req->flags2);
2279 }
2280
2281
2282 SMB_PERFCOUNT_SET_SUBOP(&req->pcd, state->call);
2283
2284 /* Now we must call the relevant NT_TRANS function */
2285 switch(state->call) {
2286 case NT_TRANSACT_CREATE:
2287 {
2288 START_PROFILE(NT_transact_create);
2289 call_nt_transact_create(
2290 conn, req,
2291 &state->setup, state->setup_count,
2292 &state->param, state->total_param,
2293 &state->data, state->total_data,
2294 state->max_data_return);
2295 END_PROFILE(NT_transact_create);
2296 break;
2297 }
2298
2299 case NT_TRANSACT_IOCTL:
2300 {
2301 START_PROFILE(NT_transact_ioctl);
2302 call_nt_transact_ioctl(
2303 conn, req,
2304 &state->setup, state->setup_count,
2305 &state->param, state->total_param,
2306 &state->data, state->total_data,
2307 state->max_data_return);
2308 END_PROFILE(NT_transact_ioctl);
2309 break;
2310 }
2311
2312 case NT_TRANSACT_SET_SECURITY_DESC:
2313 {
2314 START_PROFILE(NT_transact_set_security_desc);
2315 call_nt_transact_set_security_desc(
2316 conn, req,
2317 &state->setup, state->setup_count,
2318 &state->param, state->total_param,
2319 &state->data, state->total_data,
2320 state->max_data_return);
2321 END_PROFILE(NT_transact_set_security_desc);
2322 break;
2323 }
2324
2325 case NT_TRANSACT_NOTIFY_CHANGE:
2326 {
2327 START_PROFILE(NT_transact_notify_change);
2328 call_nt_transact_notify_change(
2329 conn, req,
2330 &state->setup, state->setup_count,
2331 &state->param, state->total_param,
2332 &state->data, state->total_data,
2333 state->max_data_return,
2334 state->max_param_return);
2335 END_PROFILE(NT_transact_notify_change);
2336 break;
2337 }
2338
2339 case NT_TRANSACT_RENAME:
2340 {
2341 START_PROFILE(NT_transact_rename);
2342 call_nt_transact_rename(
2343 conn, req,
2344 &state->setup, state->setup_count,
2345 &state->param, state->total_param,
2346 &state->data, state->total_data,
2347 state->max_data_return);
2348 END_PROFILE(NT_transact_rename);
2349 break;
2350 }
2351
2352 case NT_TRANSACT_QUERY_SECURITY_DESC:
2353 {
2354 START_PROFILE(NT_transact_query_security_desc);
2355 call_nt_transact_query_security_desc(
2356 conn, req,
2357 &state->setup, state->setup_count,
2358 &state->param, state->total_param,
2359 &state->data, state->total_data,
2360 state->max_data_return);
2361 END_PROFILE(NT_transact_query_security_desc);
2362 break;
2363 }
2364
2365 #ifdef HAVE_SYS_QUOTAS
2366 case NT_TRANSACT_GET_USER_QUOTA:
2367 {
2368 START_PROFILE(NT_transact_get_user_quota);
2369 call_nt_transact_get_user_quota(
2370 conn, req,
2371 &state->setup, state->setup_count,
2372 &state->param, state->total_param,
2373 &state->data, state->total_data,
2374 state->max_data_return);
2375 END_PROFILE(NT_transact_get_user_quota);
2376 break;
2377 }
2378
2379 case NT_TRANSACT_SET_USER_QUOTA:
2380 {
2381 START_PROFILE(NT_transact_set_user_quota);
2382 call_nt_transact_set_user_quota(
2383 conn, req,
2384 &state->setup, state->setup_count,
2385 &state->param, state->total_param,
2386 &state->data, state->total_data,
2387 state->max_data_return);
2388 END_PROFILE(NT_transact_set_user_quota);
2389 break;
2390 }
2391 #endif /* HAVE_SYS_QUOTAS */
2392
2393 default:
2394 /* Error in request */
2395 DEBUG(0,("handle_nttrans: Unknown request %d in "
2396 "nttrans call\n", state->call));
2397 reply_nterror(req, NT_STATUS_INVALID_LEVEL);
2398 return;
2399 }
2400 return;
2401 }
2402
2403 /****************************************************************************
2404 Reply to a SMBNTtrans.
2405 ****************************************************************************/
2406
2407 void reply_nttrans(struct smb_request *req)
2408 {
2409 connection_struct *conn = req->conn;
2410 uint32_t pscnt;
2411 uint32_t psoff;
2412 uint32_t dscnt;
2413 uint32_t dsoff;
2414 uint16_t function_code;
2415 NTSTATUS result;
2416 struct trans_state *state;
2417
2418 START_PROFILE(SMBnttrans);
2419
2420 if (req->wct < 19) {
2421 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2422 END_PROFILE(SMBnttrans);
2423 return;
2424 }
2425
2426 pscnt = IVAL(req->vwv+9, 1);
2427 psoff = IVAL(req->vwv+11, 1);
2428 dscnt = IVAL(req->vwv+13, 1);
2429 dsoff = IVAL(req->vwv+15, 1);
2430 function_code = SVAL(req->vwv+18, 0);
2431
2432 if (IS_IPC(conn) && (function_code != NT_TRANSACT_CREATE)) {
2433 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
2434 END_PROFILE(SMBnttrans);
2435 return;
2436 }
2437
2438 result = allow_new_trans(conn->pending_trans, req->mid);
2439 if (!NT_STATUS_IS_OK(result)) {
2440 DEBUG(2, ("Got invalid nttrans request: %s\n", nt_errstr(result)));
2441 reply_nterror(req, result);
2442 END_PROFILE(SMBnttrans);
2443 return;
2444 }
2445
2446 if ((state = talloc(conn, struct trans_state)) == NULL) {
2447 reply_nterror(req, NT_STATUS_NO_MEMORY);
2448 END_PROFILE(SMBnttrans);
2449 return;
2450 }
2451
2452 state->cmd = SMBnttrans;
2453
2454 state->mid = req->mid;
2455 state->vuid = req->vuid;
2456 state->total_data = IVAL(req->vwv+3, 1);
2457 state->data = NULL;
2458 state->total_param = IVAL(req->vwv+1, 1);
2459 state->param = NULL;
2460 state->max_data_return = IVAL(req->vwv+7, 1);
2461 state->max_param_return = IVAL(req->vwv+5, 1);
2462
2463 /* setup count is in *words* */
2464 state->setup_count = 2*CVAL(req->vwv+17, 1);
2465 state->setup = NULL;
2466 state->call = function_code;
2467
2468 DEBUG(10, ("num_setup=%u, "
2469 "param_total=%u, this_param=%u, max_param=%u, "
2470 "data_total=%u, this_data=%u, max_data=%u, "
2471 "param_offset=%u, data_offset=%u\n",
2472 (unsigned)state->setup_count,
2473 (unsigned)state->total_param, (unsigned)pscnt,
2474 (unsigned)state->max_param_return,
2475 (unsigned)state->total_data, (unsigned)dscnt,
2476 (unsigned)state->max_data_return,
2477 (unsigned)psoff, (unsigned)dsoff));
2478
2479 /*
2480 * All nttrans messages we handle have smb_wct == 19 +
2481 * state->setup_count. Ensure this is so as a sanity check.
2482 */
2483
2484 if(req->wct != 19 + (state->setup_count/2)) {
2485 DEBUG(2,("Invalid smb_wct %d in nttrans call (should be %d)\n",
2486 req->wct, 19 + (state->setup_count/2)));
2487 goto bad_param;
2488 }
2489
2490 /* Don't allow more than 128mb for each value. */
2491 if ((state->total_data > (1024*1024*128)) ||
2492 (state->total_param > (1024*1024*128))) {
2493 reply_nterror(req, NT_STATUS_NO_MEMORY);
2494 END_PROFILE(SMBnttrans);
2495 return;
2496 }
2497
2498 if ((dscnt > state->total_data) || (pscnt > state->total_param))
2499 goto bad_param;
2500
2501 if (state->total_data) {
2502
2503 if (smb_buffer_oob(state->total_data, 0, dscnt)
2504 || smb_buffer_oob(smb_len(req->inbuf), dsoff, dscnt)) {
2505 goto bad_param;
2506 }
2507
2508 /* Can't use talloc here, the core routines do realloc on the
2509 * params and data. */
2510 if ((state->data = (char *)SMB_MALLOC(state->total_data)) == NULL) {
2511 DEBUG(0,("reply_nttrans: data malloc fail for %u "
2512 "bytes !\n", (unsigned int)state->total_data));
2513 TALLOC_FREE(state);
2514 reply_nterror(req, NT_STATUS_NO_MEMORY);
2515 END_PROFILE(SMBnttrans);
2516 return;
2517 }
2518
2519 memcpy(state->data,smb_base(req->inbuf)+dsoff,dscnt);
2520 }
2521
2522 if (state->total_param) {
2523
2524 if (smb_buffer_oob(state->total_param, 0, pscnt)
2525 || smb_buffer_oob(smb_len(req->inbuf), psoff, pscnt)) {
2526 goto bad_param;
2527 }
2528
2529 /* Can't use talloc here, the core routines do realloc on the
2530 * params and data. */
2531 if ((state->param = (char *)SMB_MALLOC(state->total_param)) == NULL) {
2532 DEBUG(0,("reply_nttrans: param malloc fail for %u "
2533 "bytes !\n", (unsigned int)state->total_param));
2534 SAFE_FREE(state->data);
2535 TALLOC_FREE(state);
2536 reply_nterror(req, NT_STATUS_NO_MEMORY);
2537 END_PROFILE(SMBnttrans);
2538 return;
2539 }
2540
2541 memcpy(state->param,smb_base(req->inbuf)+psoff,pscnt);
2542 }
2543
2544 state->received_data = dscnt;
2545 state->received_param = pscnt;
2546
2547 if(state->setup_count > 0) {
2548 DEBUG(10,("reply_nttrans: state->setup_count = %d\n",
2549 state->setup_count));
2550
2551 /*
2552 * No overflow possible here, state->setup_count is an
2553 * unsigned int, being filled by a single byte from
2554 * CVAL(req->vwv+13, 0) above. The cast in the comparison
2555 * below is not necessary, it's here to clarify things. The
2556 * validity of req->vwv and req->wct has been checked in
2557 * init_smb1_request already.
2558 */
2559 if ((state->setup_count/2) + 19 > (unsigned int)req->wct) {
2560 goto bad_param;
2561 }
2562
2563 state->setup = (uint16_t *)TALLOC(state, state->setup_count);
2564 if (state->setup == NULL) {
2565 DEBUG(0,("reply_nttrans : Out of memory\n"));
2566 SAFE_FREE(state->data);
2567 SAFE_FREE(state->param);
2568 TALLOC_FREE(state);
2569 reply_nterror(req, NT_STATUS_NO_MEMORY);
2570 END_PROFILE(SMBnttrans);
2571 return;
2572 }
2573
2574 memcpy(state->setup, req->vwv+19, state->setup_count);
2575 dump_data(10, (uint8_t *)state->setup, state->setup_count);
2576 }
2577
2578 if ((state->received_data == state->total_data) &&
2579 (state->received_param == state->total_param)) {
2580 handle_nttrans(conn, state, req);
2581 SAFE_FREE(state->param);
2582 SAFE_FREE(state->data);
2583 TALLOC_FREE(state);
2584 END_PROFILE(SMBnttrans);
2585 return;
2586 }
2587
2588 DLIST_ADD(conn->pending_trans, state);
2589
2590 /* We need to send an interim response then receive the rest
2591 of the parameter/data bytes */
2592 reply_smb1_outbuf(req, 0, 0);
2593 show_msg((char *)req->outbuf);
2594 END_PROFILE(SMBnttrans);
2595 return;
2596
2597 bad_param:
2598
2599 DEBUG(0,("reply_nttrans: invalid trans parameters\n"));
2600 SAFE_FREE(state->data);
2601 SAFE_FREE(state->param);
2602 TALLOC_FREE(state);
2603 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2604 END_PROFILE(SMBnttrans);
2605 return;
2606 }
2607
2608 /****************************************************************************
2609 Reply to a SMBnttranss
2610 ****************************************************************************/
2611
2612 void reply_nttranss(struct smb_request *req)
2613 {
2614 connection_struct *conn = req->conn;
2615 uint32_t pcnt,poff,dcnt,doff,pdisp,ddisp;
2616 struct trans_state *state;
2617
2618 START_PROFILE(SMBnttranss);
2619
2620 show_msg((const char *)req->inbuf);
2621
2622 /* Windows clients expect all replies to
2623 an NT transact secondary (SMBnttranss 0xA1)
2624 to have a command code of NT transact
2625 (SMBnttrans 0xA0). See bug #8989 for details. */
2626 req->cmd = SMBnttrans;
2627
2628 if (req->wct < 18) {
2629 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2630 END_PROFILE(SMBnttranss);
2631 return;
2632 }
2633
2634 for (state = conn->pending_trans; state != NULL;
2635 state = state->next) {
2636 if (state->mid == req->mid) {
2637 break;
2638 }
2639 }
2640
2641 if ((state == NULL) || (state->cmd != SMBnttrans)) {
2642 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2643 END_PROFILE(SMBnttranss);
2644 return;
2645 }
2646
2647 /* Revise state->total_param and state->total_data in case they have
2648 changed downwards */
2649 if (IVAL(req->vwv+1, 1) < state->total_param) {
2650 state->total_param = IVAL(req->vwv+1, 1);
2651 }
2652 if (IVAL(req->vwv+3, 1) < state->total_data) {
2653 state->total_data = IVAL(req->vwv+3, 1);
2654 }
2655
2656 pcnt = IVAL(req->vwv+5, 1);
2657 poff = IVAL(req->vwv+7, 1);
2658 pdisp = IVAL(req->vwv+9, 1);
2659
2660 dcnt = IVAL(req->vwv+11, 1);
2661 doff = IVAL(req->vwv+13, 1);
2662 ddisp = IVAL(req->vwv+15, 1);
2663
2664 state->received_param += pcnt;
2665 state->received_data += dcnt;
2666
2667 if ((state->received_data > state->total_data) ||
2668 (state->received_param > state->total_param))
2669 goto bad_param;
2670
2671 if (pcnt) {
2672 if (smb_buffer_oob(state->total_param, pdisp, pcnt)
2673 || smb_buffer_oob(smb_len(req->inbuf), poff, pcnt)) {
2674 goto bad_param;
2675 }
2676 memcpy(state->param+pdisp, smb_base(req->inbuf)+poff,pcnt);
2677 }
2678
2679 if (dcnt) {
2680 if (smb_buffer_oob(state->total_data, ddisp, dcnt)
2681 || smb_buffer_oob(smb_len(req->inbuf), doff, dcnt)) {
2682 goto bad_param;
2683 }
2684 memcpy(state->data+ddisp, smb_base(req->inbuf)+doff,dcnt);
2685 }
2686
2687 if ((state->received_param < state->total_param) ||
2688 (state->received_data < state->total_data)) {
2689 END_PROFILE(SMBnttranss);
2690 return;
2691 }
2692
2693 handle_nttrans(conn, state, req);
2694
2695 DLIST_REMOVE(conn->pending_trans, state);
2696 SAFE_FREE(state->data);
2697 SAFE_FREE(state->param);
2698 TALLOC_FREE(state);
2699 END_PROFILE(SMBnttranss);
2700 return;
2701
2702 bad_param:
2703
2704 DEBUG(0,("reply_nttranss: invalid trans parameters\n"));
2705 DLIST_REMOVE(conn->pending_trans, state);
2706 SAFE_FREE(state->data);
2707 SAFE_FREE(state->param);
2708 TALLOC_FREE(state);
2709 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2710 END_PROFILE(SMBnttranss);
2711 return;
2712 }
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