source: vendor/current/source3/smbd/nttrans.c

Last change on this file was 988, checked in by Silvan Scherrer, 9 years ago

Samba Server: update vendor to version 4.4.3
File size: 79.7 KB
Line 
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
34extern const struct generic_mapping file_generic_mapping;
35
36static 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
57static 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_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 (!srv_send_smb(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: srv_send_smb 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_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 (!srv_send_smb(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: srv_send_smb 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
282static 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
314static 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_outbuf(req, 50, 0);
348 SCVAL(req->outbuf,smb_wct,42);
349 } else {
350 reply_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
385struct 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
396static 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
408static 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 Reply to an NT create and X call.
434****************************************************************************/
435
436void reply_ntcreate_and_X(struct smb_request *req)
437{
438 connection_struct *conn = req->conn;
439 struct smb_filename *smb_fname = NULL;
440 char *fname = NULL;
441 uint32_t flags;
442 uint32_t access_mask;
443 uint32_t file_attributes;
444 uint32_t share_access;
445 uint32_t create_disposition;
446 uint32_t create_options;
447 uint16_t root_dir_fid;
448 uint64_t allocation_size;
449 /* Breakout the oplock request bits so we can set the
450 reply bits separately. */
451 uint32_t fattr=0;
452 off_t file_len = 0;
453 int info = 0;
454 files_struct *fsp = NULL;
455 char *p = NULL;
456 struct timespec create_timespec;
457 struct timespec c_timespec;
458 struct timespec a_timespec;
459 struct timespec m_timespec;
460 NTSTATUS status;
461 int oplock_request;
462 uint8_t oplock_granted = NO_OPLOCK_RETURN;
463 struct case_semantics_state *case_state = NULL;
464 uint32_t ucf_flags = UCF_PREP_CREATEFILE |
465 (req->posix_pathnames ? UCF_POSIX_PATHNAMES : 0);
466 TALLOC_CTX *ctx = talloc_tos();
467
468 START_PROFILE(SMBntcreateX);
469
470 if (req->wct < 24) {
471 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
472 goto out;
473 }
474
475 flags = IVAL(req->vwv+3, 1);
476 access_mask = IVAL(req->vwv+7, 1);
477 file_attributes = IVAL(req->vwv+13, 1);
478 share_access = IVAL(req->vwv+15, 1);
479 create_disposition = IVAL(req->vwv+17, 1);
480 create_options = IVAL(req->vwv+19, 1);
481 root_dir_fid = (uint16_t)IVAL(req->vwv+5, 1);
482
483 allocation_size = BVAL(req->vwv+9, 1);
484
485 srvstr_get_path_req(ctx, req, &fname, (const char *)req->buf,
486 STR_TERMINATE, &status);
487
488 if (!NT_STATUS_IS_OK(status)) {
489 reply_nterror(req, status);
490 goto out;
491 }
492
493 DEBUG(10,("reply_ntcreate_and_X: flags = 0x%x, access_mask = 0x%x "
494 "file_attributes = 0x%x, share_access = 0x%x, "
495 "create_disposition = 0x%x create_options = 0x%x "
496 "root_dir_fid = 0x%x, fname = %s\n",
497 (unsigned int)flags,
498 (unsigned int)access_mask,
499 (unsigned int)file_attributes,
500 (unsigned int)share_access,
501 (unsigned int)create_disposition,
502 (unsigned int)create_options,
503 (unsigned int)root_dir_fid,
504 fname));
505
506 /*
507 * we need to remove ignored bits when they come directly from the client
508 * because we reuse some of them for internal stuff
509 */
510 create_options &= ~NTCREATEX_OPTIONS_MUST_IGNORE_MASK;
511
512 /*
513 * If it's an IPC, use the pipe handler.
514 */
515
516 if (IS_IPC(conn)) {
517 if (lp_nt_pipe_support()) {
518 do_ntcreate_pipe_open(conn, req);
519 goto out;
520 }
521 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
522 goto out;
523 }
524
525 oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0;
526 if (oplock_request) {
527 oplock_request |= (flags & REQUEST_BATCH_OPLOCK)
528 ? BATCH_OPLOCK : 0;
529 }
530
531 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
532 case_state = set_posix_case_semantics(ctx, conn);
533 if (!case_state) {
534 reply_nterror(req, NT_STATUS_NO_MEMORY);
535 goto out;
536 }
537 }
538
539 status = filename_convert(ctx,
540 conn,
541 req->flags2 & FLAGS2_DFS_PATHNAMES,
542 fname,
543 ucf_flags,
544 NULL,
545 &smb_fname);
546
547 TALLOC_FREE(case_state);
548
549 if (!NT_STATUS_IS_OK(status)) {
550 if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) {
551 reply_botherror(req,
552 NT_STATUS_PATH_NOT_COVERED,
553 ERRSRV, ERRbadpath);
554 goto out;
555 }
556 reply_nterror(req, status);
557 goto out;
558 }
559
560 /*
561 * Bug #6898 - clients using Windows opens should
562 * never be able to set this attribute into the
563 * VFS.
564 */
565 file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
566
567 status = SMB_VFS_CREATE_FILE(
568 conn, /* conn */
569 req, /* req */
570 root_dir_fid, /* root_dir_fid */
571 smb_fname, /* fname */
572 access_mask, /* access_mask */
573 share_access, /* share_access */
574 create_disposition, /* create_disposition*/
575 create_options, /* create_options */
576 file_attributes, /* file_attributes */
577 oplock_request, /* oplock_request */
578 NULL, /* lease */
579 allocation_size, /* allocation_size */
580 0, /* private_flags */
581 NULL, /* sd */
582 NULL, /* ea_list */
583 &fsp, /* result */
584 &info, /* pinfo */
585 NULL, NULL); /* create context */
586
587 if (!NT_STATUS_IS_OK(status)) {
588 if (open_was_deferred(req->xconn, req->mid)) {
589 /* We have re-scheduled this call, no error. */
590 goto out;
591 }
592 reply_openerror(req, status);
593 goto out;
594 }
595
596 /* Ensure we're pointing at the correct stat struct. */
597 TALLOC_FREE(smb_fname);
598 smb_fname = fsp->fsp_name;
599
600 /*
601 * If the caller set the extended oplock request bit
602 * and we granted one (by whatever means) - set the
603 * correct bit for extended oplock reply.
604 */
605
606 if (oplock_request &&
607 (lp_fake_oplocks(SNUM(conn))
608 || EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type))) {
609
610 /*
611 * Exclusive oplock granted
612 */
613
614 if (flags & REQUEST_BATCH_OPLOCK) {
615 oplock_granted = BATCH_OPLOCK_RETURN;
616 } else {
617 oplock_granted = EXCLUSIVE_OPLOCK_RETURN;
618 }
619 } else if (fsp->oplock_type == LEVEL_II_OPLOCK) {
620 oplock_granted = LEVEL_II_OPLOCK_RETURN;
621 } else {
622 oplock_granted = NO_OPLOCK_RETURN;
623 }
624
625 file_len = smb_fname->st.st_ex_size;
626
627 if (flags & EXTENDED_RESPONSE_REQUIRED) {
628 /* This is very strange. We
629 * return 50 words, but only set
630 * the wcnt to 42 ? It's definitely
631 * what happens on the wire....
632 */
633 reply_outbuf(req, 50, 0);
634 SCVAL(req->outbuf,smb_wct,42);
635 } else {
636 reply_outbuf(req, 34, 0);
637 }
638
639 SSVAL(req->outbuf, smb_vwv0, 0xff); /* andx chain ends */
640 SSVAL(req->outbuf, smb_vwv1, 0); /* no andx offset */
641
642 p = (char *)req->outbuf + smb_vwv2;
643
644 SCVAL(p, 0, oplock_granted);
645
646 p++;
647 SSVAL(p,0,fsp->fnum);
648 p += 2;
649 if ((create_disposition == FILE_SUPERSEDE)
650 && (info == FILE_WAS_OVERWRITTEN)) {
651 SIVAL(p,0,FILE_WAS_SUPERSEDED);
652 } else {
653 SIVAL(p,0,info);
654 }
655 p += 4;
656
657 fattr = dos_mode(conn, smb_fname);
658 if (fattr == 0) {
659 fattr = FILE_ATTRIBUTE_NORMAL;
660 }
661
662 /* Create time. */
663 create_timespec = get_create_timespec(conn, fsp, smb_fname);
664 a_timespec = smb_fname->st.st_ex_atime;
665 m_timespec = smb_fname->st.st_ex_mtime;
666 c_timespec = get_change_timespec(conn, fsp, smb_fname);
667
668 if (lp_dos_filetime_resolution(SNUM(conn))) {
669 dos_filetime_timespec(&create_timespec);
670 dos_filetime_timespec(&a_timespec);
671 dos_filetime_timespec(&m_timespec);
672 dos_filetime_timespec(&c_timespec);
673 }
674
675 put_long_date_timespec(conn->ts_res, p, create_timespec); /* create time. */
676 p += 8;
677 put_long_date_timespec(conn->ts_res, p, a_timespec); /* access time */
678 p += 8;
679 put_long_date_timespec(conn->ts_res, p, m_timespec); /* write time */
680 p += 8;
681 put_long_date_timespec(conn->ts_res, p, c_timespec); /* change time */
682 p += 8;
683 SIVAL(p,0,fattr); /* File Attributes. */
684 p += 4;
685 SOFF_T(p, 0, SMB_VFS_GET_ALLOC_SIZE(conn,fsp,&smb_fname->st));
686 p += 8;
687 SOFF_T(p,0,file_len);
688 p += 8;
689 if (flags & EXTENDED_RESPONSE_REQUIRED) {
690 uint16_t file_status = (NO_EAS|NO_SUBSTREAMS|NO_REPARSETAG);
691 size_t num_names = 0;
692 unsigned int num_streams = 0;
693 struct stream_struct *streams = NULL;
694
695 /* Do we have any EA's ? */
696 status = get_ea_names_from_file(ctx, conn, fsp,
697 smb_fname->base_name, NULL, &num_names);
698 if (NT_STATUS_IS_OK(status) && num_names) {
699 file_status &= ~NO_EAS;
700 }
701 status = vfs_streaminfo(conn, NULL, smb_fname->base_name, ctx,
702 &num_streams, &streams);
703 /* There is always one stream, ::$DATA. */
704 if (NT_STATUS_IS_OK(status) && num_streams > 1) {
705 file_status &= ~NO_SUBSTREAMS;
706 }
707 TALLOC_FREE(streams);
708 SSVAL(p,2,file_status);
709 }
710 p += 4;
711 SCVAL(p,0,fsp->is_directory ? 1 : 0);
712
713 if (flags & EXTENDED_RESPONSE_REQUIRED) {
714 uint32_t perms = 0;
715 p += 25;
716 if (fsp->is_directory ||
717 fsp->can_write ||
718 can_write_to_file(conn, smb_fname)) {
719 perms = FILE_GENERIC_ALL;
720 } else {
721 perms = FILE_GENERIC_READ|FILE_EXECUTE;
722 }
723 SIVAL(p,0,perms);
724 }
725
726 DEBUG(5,("reply_ntcreate_and_X: %s, open name = %s\n",
727 fsp_fnum_dbg(fsp), smb_fname_str_dbg(smb_fname)));
728
729 out:
730 END_PROFILE(SMBntcreateX);
731 return;
732}
733
734/****************************************************************************
735 Reply to a NT_TRANSACT_CREATE call to open a pipe.
736****************************************************************************/
737
738static void do_nt_transact_create_pipe(connection_struct *conn,
739 struct smb_request *req,
740 uint16_t **ppsetup, uint32_t setup_count,
741 char **ppparams, uint32_t parameter_count,
742 char **ppdata, uint32_t data_count)
743{
744 char *fname = NULL;
745 char *params = *ppparams;
746 uint16_t pnum = FNUM_FIELD_INVALID;
747 char *p = NULL;
748 NTSTATUS status;
749 size_t param_len;
750 uint32_t flags;
751 TALLOC_CTX *ctx = talloc_tos();
752
753 /*
754 * Ensure minimum number of parameters sent.
755 */
756
757 if(parameter_count < 54) {
758 DEBUG(0,("do_nt_transact_create_pipe - insufficient parameters (%u)\n", (unsigned int)parameter_count));
759 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
760 return;
761 }
762
763 flags = IVAL(params,0);
764
765 if (req->posix_pathnames) {
766 srvstr_get_path_posix(ctx,
767 params,
768 req->flags2,
769 &fname,
770 params+53,
771 parameter_count-53,
772 STR_TERMINATE,
773 &status);
774 } else {
775 srvstr_get_path(ctx,
776 params,
777 req->flags2,
778 &fname,
779 params+53,
780 parameter_count-53,
781 STR_TERMINATE,
782 &status);
783 }
784 if (!NT_STATUS_IS_OK(status)) {
785 reply_nterror(req, status);
786 return;
787 }
788
789 nt_open_pipe(fname, conn, req, &pnum);
790
791 if (req->outbuf) {
792 /* Error return */
793 return;
794 }
795
796 /* Realloc the size of parameters and data we will return */
797 if (flags & EXTENDED_RESPONSE_REQUIRED) {
798 /* Extended response is 32 more byyes. */
799 param_len = 101;
800 } else {
801 param_len = 69;
802 }
803 params = nttrans_realloc(ppparams, param_len);
804 if(params == NULL) {
805 reply_nterror(req, NT_STATUS_NO_MEMORY);
806 return;
807 }
808
809 p = params;
810 SCVAL(p,0,NO_OPLOCK_RETURN);
811
812 p += 2;
813 SSVAL(p,0,pnum);
814 p += 2;
815 SIVAL(p,0,FILE_WAS_OPENED);
816 p += 8;
817
818 p += 32;
819 SIVAL(p,0,FILE_ATTRIBUTE_NORMAL); /* File Attributes. */
820 p += 20;
821 /* File type. */
822 SSVAL(p,0,FILE_TYPE_MESSAGE_MODE_PIPE);
823 /* Device state. */
824 SSVAL(p,2, 0x5FF); /* ? */
825 p += 4;
826
827 if (flags & EXTENDED_RESPONSE_REQUIRED) {
828 p += 25;
829 SIVAL(p,0,FILE_GENERIC_ALL);
830 /*
831 * For pipes W2K3 seems to return
832 * 0x12019B next.
833 * This is ((FILE_GENERIC_READ|FILE_GENERIC_WRITE) & ~FILE_APPEND_DATA)
834 */
835 SIVAL(p,4,(FILE_GENERIC_READ|FILE_GENERIC_WRITE)&~FILE_APPEND_DATA);
836 }
837
838 DEBUG(5,("do_nt_transact_create_pipe: open name = %s\n", fname));
839
840 /* Send the required number of replies */
841 send_nt_replies(conn, req, NT_STATUS_OK, params, param_len, *ppdata, 0);
842
843 return;
844}
845
846/*********************************************************************
847 Windows seems to do canonicalization of inheritance bits. Do the
848 same.
849*********************************************************************/
850
851static void canonicalize_inheritance_bits(struct security_descriptor *psd)
852{
853 bool set_auto_inherited = false;
854
855 /*
856 * We need to filter out the
857 * SEC_DESC_DACL_AUTO_INHERITED|SEC_DESC_DACL_AUTO_INHERIT_REQ
858 * bits. If both are set we store SEC_DESC_DACL_AUTO_INHERITED
859 * as this alters whether SEC_ACE_FLAG_INHERITED_ACE is set
860 * when an ACE is inherited. Otherwise we zero these bits out.
861 * See:
862 *
863 * http://social.msdn.microsoft.com/Forums/eu/os_fileservices/thread/11f77b68-731e-407d-b1b3-064750716531
864 *
865 * for details.
866 */
867
868 if ((psd->type & (SEC_DESC_DACL_AUTO_INHERITED|SEC_DESC_DACL_AUTO_INHERIT_REQ))
869 == (SEC_DESC_DACL_AUTO_INHERITED|SEC_DESC_DACL_AUTO_INHERIT_REQ)) {
870 set_auto_inherited = true;
871 }
872
873 psd->type &= ~(SEC_DESC_DACL_AUTO_INHERITED|SEC_DESC_DACL_AUTO_INHERIT_REQ);
874 if (set_auto_inherited) {
875 psd->type |= SEC_DESC_DACL_AUTO_INHERITED;
876 }
877}
878
879/****************************************************************************
880 Internal fn to set security descriptors.
881****************************************************************************/
882
883NTSTATUS set_sd(files_struct *fsp, struct security_descriptor *psd,
884 uint32_t security_info_sent)
885{
886 NTSTATUS status;
887
888 if (!CAN_WRITE(fsp->conn)) {
889 return NT_STATUS_ACCESS_DENIED;
890 }
891
892 if (!lp_nt_acl_support(SNUM(fsp->conn))) {
893 return NT_STATUS_OK;
894 }
895
896 if (S_ISLNK(fsp->fsp_name->st.st_ex_mode)) {
897 DEBUG(10, ("ACL set on symlink %s denied.\n",
898 fsp_str_dbg(fsp)));
899 return NT_STATUS_ACCESS_DENIED;
900 }
901
902 if (psd->owner_sid == NULL) {
903 security_info_sent &= ~SECINFO_OWNER;
904 }
905 if (psd->group_sid == NULL) {
906 security_info_sent &= ~SECINFO_GROUP;
907 }
908
909 /* Ensure we have at least one thing set. */
910 if ((security_info_sent & (SECINFO_OWNER|SECINFO_GROUP|SECINFO_DACL|SECINFO_SACL)) == 0) {
911 /* Just like W2K3 */
912 return NT_STATUS_OK;
913 }
914
915 /* Ensure we have the rights to do this. */
916 if (security_info_sent & SECINFO_OWNER) {
917 if (!(fsp->access_mask & SEC_STD_WRITE_OWNER)) {
918 return NT_STATUS_ACCESS_DENIED;
919 }
920 }
921
922 if (security_info_sent & SECINFO_GROUP) {
923 if (!(fsp->access_mask & SEC_STD_WRITE_OWNER)) {
924 return NT_STATUS_ACCESS_DENIED;
925 }
926 }
927
928 if (security_info_sent & SECINFO_DACL) {
929 if (!(fsp->access_mask & SEC_STD_WRITE_DAC)) {
930 return NT_STATUS_ACCESS_DENIED;
931 }
932 /* Convert all the generic bits. */
933 if (psd->dacl) {
934 security_acl_map_generic(psd->dacl, &file_generic_mapping);
935 }
936 }
937
938 if (security_info_sent & SECINFO_SACL) {
939 if (!(fsp->access_mask & SEC_FLAG_SYSTEM_SECURITY)) {
940 return NT_STATUS_ACCESS_DENIED;
941 }
942 /* Convert all the generic bits. */
943 if (psd->sacl) {
944 security_acl_map_generic(psd->sacl, &file_generic_mapping);
945 }
946 }
947
948 canonicalize_inheritance_bits(psd);
949
950 if (DEBUGLEVEL >= 10) {
951 DEBUG(10,("set_sd for file %s\n", fsp_str_dbg(fsp)));
952 NDR_PRINT_DEBUG(security_descriptor, psd);
953 }
954
955 status = SMB_VFS_FSET_NT_ACL(fsp, security_info_sent, psd);
956
957 TALLOC_FREE(psd);
958
959 return status;
960}
961
962/****************************************************************************
963 Internal fn to set security descriptors from a data blob.
964****************************************************************************/
965
966NTSTATUS set_sd_blob(files_struct *fsp, uint8_t *data, uint32_t sd_len,
967 uint32_t security_info_sent)
968{
969 struct security_descriptor *psd = NULL;
970 NTSTATUS status;
971
972 if (sd_len == 0) {
973 return NT_STATUS_INVALID_PARAMETER;
974 }
975
976 status = unmarshall_sec_desc(talloc_tos(), data, sd_len, &psd);
977
978 if (!NT_STATUS_IS_OK(status)) {
979 return status;
980 }
981
982 return set_sd(fsp, psd, security_info_sent);
983}
984
985/****************************************************************************
986 Reply to a NT_TRANSACT_CREATE call (needs to process SD's).
987****************************************************************************/
988
989static void call_nt_transact_create(connection_struct *conn,
990 struct smb_request *req,
991 uint16_t **ppsetup, uint32_t setup_count,
992 char **ppparams, uint32_t parameter_count,
993 char **ppdata, uint32_t data_count,
994 uint32_t max_data_count)
995{
996 struct smb_filename *smb_fname = NULL;
997 char *fname = NULL;
998 char *params = *ppparams;
999 char *data = *ppdata;
1000 /* Breakout the oplock request bits so we can set the reply bits separately. */
1001 uint32_t fattr=0;
1002 off_t file_len = 0;
1003 int info = 0;
1004 files_struct *fsp = NULL;
1005 char *p = NULL;
1006 uint32_t flags;
1007 uint32_t access_mask;
1008 uint32_t file_attributes;
1009 uint32_t share_access;
1010 uint32_t create_disposition;
1011 uint32_t create_options;
1012 uint32_t sd_len;
1013 struct security_descriptor *sd = NULL;
1014 uint32_t ea_len;
1015 uint16_t root_dir_fid;
1016 struct timespec create_timespec;
1017 struct timespec c_timespec;
1018 struct timespec a_timespec;
1019 struct timespec m_timespec;
1020 struct ea_list *ea_list = NULL;
1021 NTSTATUS status;
1022 size_t param_len;
1023 uint64_t allocation_size;
1024 int oplock_request;
1025 uint8_t oplock_granted;
1026 struct case_semantics_state *case_state = NULL;
1027 uint32_t ucf_flags = UCF_PREP_CREATEFILE |
1028 (req->posix_pathnames ? UCF_POSIX_PATHNAMES : 0);
1029 TALLOC_CTX *ctx = talloc_tos();
1030
1031 DEBUG(5,("call_nt_transact_create\n"));
1032
1033 /*
1034 * If it's an IPC, use the pipe handler.
1035 */
1036
1037 if (IS_IPC(conn)) {
1038 if (lp_nt_pipe_support()) {
1039 do_nt_transact_create_pipe(
1040 conn, req,
1041 ppsetup, setup_count,
1042 ppparams, parameter_count,
1043 ppdata, data_count);
1044 goto out;
1045 }
1046 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
1047 goto out;
1048 }
1049
1050 /*
1051 * Ensure minimum number of parameters sent.
1052 */
1053
1054 if(parameter_count < 54) {
1055 DEBUG(0,("call_nt_transact_create - insufficient parameters (%u)\n", (unsigned int)parameter_count));
1056 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1057 goto out;
1058 }
1059
1060 flags = IVAL(params,0);
1061 access_mask = IVAL(params,8);
1062 file_attributes = IVAL(params,20);
1063 share_access = IVAL(params,24);
1064 create_disposition = IVAL(params,28);
1065 create_options = IVAL(params,32);
1066 sd_len = IVAL(params,36);
1067 ea_len = IVAL(params,40);
1068 root_dir_fid = (uint16_t)IVAL(params,4);
1069 allocation_size = BVAL(params,12);
1070
1071 /*
1072 * we need to remove ignored bits when they come directly from the client
1073 * because we reuse some of them for internal stuff
1074 */
1075 create_options &= ~NTCREATEX_OPTIONS_MUST_IGNORE_MASK;
1076
1077 if (req->posix_pathnames) {
1078 srvstr_get_path_posix(ctx,
1079 params,
1080 req->flags2,
1081 &fname,
1082 params+53,
1083 parameter_count-53,
1084 STR_TERMINATE,
1085 &status);
1086 } else {
1087 srvstr_get_path(ctx,
1088 params,
1089 req->flags2,
1090 &fname,
1091 params+53,
1092 parameter_count-53,
1093 STR_TERMINATE,
1094 &status);
1095 }
1096 if (!NT_STATUS_IS_OK(status)) {
1097 reply_nterror(req, status);
1098 goto out;
1099 }
1100
1101 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
1102 case_state = set_posix_case_semantics(ctx, conn);
1103 if (!case_state) {
1104 reply_nterror(req, NT_STATUS_NO_MEMORY);
1105 goto out;
1106 }
1107 }
1108
1109 status = filename_convert(ctx,
1110 conn,
1111 req->flags2 & FLAGS2_DFS_PATHNAMES,
1112 fname,
1113 ucf_flags,
1114 NULL,
1115 &smb_fname);
1116
1117 TALLOC_FREE(case_state);
1118
1119 if (!NT_STATUS_IS_OK(status)) {
1120 if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) {
1121 reply_botherror(req,
1122 NT_STATUS_PATH_NOT_COVERED,
1123 ERRSRV, ERRbadpath);
1124 goto out;
1125 }
1126 reply_nterror(req, status);
1127 goto out;
1128 }
1129
1130 /* Ensure the data_len is correct for the sd and ea values given. */
1131 if ((ea_len + sd_len > data_count)
1132 || (ea_len > data_count) || (sd_len > data_count)
1133 || (ea_len + sd_len < ea_len) || (ea_len + sd_len < sd_len)) {
1134 DEBUG(10, ("call_nt_transact_create - ea_len = %u, sd_len = "
1135 "%u, data_count = %u\n", (unsigned int)ea_len,
1136 (unsigned int)sd_len, (unsigned int)data_count));
1137 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1138 goto out;
1139 }
1140
1141 if (sd_len) {
1142 DEBUG(10, ("call_nt_transact_create - sd_len = %d\n",
1143 sd_len));
1144
1145 status = unmarshall_sec_desc(ctx, (uint8_t *)data, sd_len,
1146 &sd);
1147 if (!NT_STATUS_IS_OK(status)) {
1148 DEBUG(10, ("call_nt_transact_create: "
1149 "unmarshall_sec_desc failed: %s\n",
1150 nt_errstr(status)));
1151 reply_nterror(req, status);
1152 goto out;
1153 }
1154 }
1155
1156 if (ea_len) {
1157 if (!lp_ea_support(SNUM(conn))) {
1158 DEBUG(10, ("call_nt_transact_create - ea_len = %u but "
1159 "EA's not supported.\n",
1160 (unsigned int)ea_len));
1161 reply_nterror(req, NT_STATUS_EAS_NOT_SUPPORTED);
1162 goto out;
1163 }
1164
1165 if (ea_len < 10) {
1166 DEBUG(10,("call_nt_transact_create - ea_len = %u - "
1167 "too small (should be more than 10)\n",
1168 (unsigned int)ea_len ));
1169 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1170 goto out;
1171 }
1172
1173 /* We have already checked that ea_len <= data_count here. */
1174 ea_list = read_nttrans_ea_list(talloc_tos(), data + sd_len,
1175 ea_len);
1176 if (ea_list == NULL) {
1177 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1178 goto out;
1179 }
1180
1181 if (ea_list_has_invalid_name(ea_list)) {
1182 /* Realloc the size of parameters and data we will return */
1183 if (flags & EXTENDED_RESPONSE_REQUIRED) {
1184 /* Extended response is 32 more byyes. */
1185 param_len = 101;
1186 } else {
1187 param_len = 69;
1188 }
1189 params = nttrans_realloc(ppparams, param_len);
1190 if(params == NULL) {
1191 reply_nterror(req, NT_STATUS_NO_MEMORY);
1192 goto out;
1193 }
1194
1195 memset(params, '\0', param_len);
1196 send_nt_replies(conn, req, STATUS_INVALID_EA_NAME,
1197 params, param_len, NULL, 0);
1198 goto out;
1199 }
1200 }
1201
1202 oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0;
1203 if (oplock_request) {
1204 oplock_request |= (flags & REQUEST_BATCH_OPLOCK)
1205 ? BATCH_OPLOCK : 0;
1206 }
1207
1208 /*
1209 * Bug #6898 - clients using Windows opens should
1210 * never be able to set this attribute into the
1211 * VFS.
1212 */
1213 file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
1214
1215 status = SMB_VFS_CREATE_FILE(
1216 conn, /* conn */
1217 req, /* req */
1218 root_dir_fid, /* root_dir_fid */
1219 smb_fname, /* fname */
1220 access_mask, /* access_mask */
1221 share_access, /* share_access */
1222 create_disposition, /* create_disposition*/
1223 create_options, /* create_options */
1224 file_attributes, /* file_attributes */
1225 oplock_request, /* oplock_request */
1226 NULL, /* lease */
1227 allocation_size, /* allocation_size */
1228 0, /* private_flags */
1229 sd, /* sd */
1230 ea_list, /* ea_list */
1231 &fsp, /* result */
1232 &info, /* pinfo */
1233 NULL, NULL); /* create context */
1234
1235 if(!NT_STATUS_IS_OK(status)) {
1236 if (open_was_deferred(req->xconn, req->mid)) {
1237 /* We have re-scheduled this call, no error. */
1238 return;
1239 }
1240 reply_openerror(req, status);
1241 goto out;
1242 }
1243
1244 /* Ensure we're pointing at the correct stat struct. */
1245 TALLOC_FREE(smb_fname);
1246 smb_fname = fsp->fsp_name;
1247
1248 /*
1249 * If the caller set the extended oplock request bit
1250 * and we granted one (by whatever means) - set the
1251 * correct bit for extended oplock reply.
1252 */
1253
1254 if (oplock_request &&
1255 (lp_fake_oplocks(SNUM(conn))
1256 || EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type))) {
1257
1258 /*
1259 * Exclusive oplock granted
1260 */
1261
1262 if (flags & REQUEST_BATCH_OPLOCK) {
1263 oplock_granted = BATCH_OPLOCK_RETURN;
1264 } else {
1265 oplock_granted = EXCLUSIVE_OPLOCK_RETURN;
1266 }
1267 } else if (fsp->oplock_type == LEVEL_II_OPLOCK) {
1268 oplock_granted = LEVEL_II_OPLOCK_RETURN;
1269 } else {
1270 oplock_granted = NO_OPLOCK_RETURN;
1271 }
1272
1273 file_len = smb_fname->st.st_ex_size;
1274
1275 /* Realloc the size of parameters and data we will return */
1276 if (flags & EXTENDED_RESPONSE_REQUIRED) {
1277 /* Extended response is 32 more byyes. */
1278 param_len = 101;
1279 } else {
1280 param_len = 69;
1281 }
1282 params = nttrans_realloc(ppparams, param_len);
1283 if(params == NULL) {
1284 reply_nterror(req, NT_STATUS_NO_MEMORY);
1285 goto out;
1286 }
1287
1288 p = params;
1289 SCVAL(p, 0, oplock_granted);
1290
1291 p += 2;
1292 SSVAL(p,0,fsp->fnum);
1293 p += 2;
1294 if ((create_disposition == FILE_SUPERSEDE)
1295 && (info == FILE_WAS_OVERWRITTEN)) {
1296 SIVAL(p,0,FILE_WAS_SUPERSEDED);
1297 } else {
1298 SIVAL(p,0,info);
1299 }
1300 p += 8;
1301
1302 fattr = dos_mode(conn, smb_fname);
1303 if (fattr == 0) {
1304 fattr = FILE_ATTRIBUTE_NORMAL;
1305 }
1306
1307 /* Create time. */
1308 create_timespec = get_create_timespec(conn, fsp, smb_fname);
1309 a_timespec = smb_fname->st.st_ex_atime;
1310 m_timespec = smb_fname->st.st_ex_mtime;
1311 c_timespec = get_change_timespec(conn, fsp, smb_fname);
1312
1313 if (lp_dos_filetime_resolution(SNUM(conn))) {
1314 dos_filetime_timespec(&create_timespec);
1315 dos_filetime_timespec(&a_timespec);
1316 dos_filetime_timespec(&m_timespec);
1317 dos_filetime_timespec(&c_timespec);
1318 }
1319
1320 put_long_date_timespec(conn->ts_res, p, create_timespec); /* create time. */
1321 p += 8;
1322 put_long_date_timespec(conn->ts_res, p, a_timespec); /* access time */
1323 p += 8;
1324 put_long_date_timespec(conn->ts_res, p, m_timespec); /* write time */
1325 p += 8;
1326 put_long_date_timespec(conn->ts_res, p, c_timespec); /* change time */
1327 p += 8;
1328 SIVAL(p,0,fattr); /* File Attributes. */
1329 p += 4;
1330 SOFF_T(p, 0, SMB_VFS_GET_ALLOC_SIZE(conn, fsp, &smb_fname->st));
1331 p += 8;
1332 SOFF_T(p,0,file_len);
1333 p += 8;
1334 if (flags & EXTENDED_RESPONSE_REQUIRED) {
1335 uint16_t file_status = (NO_EAS|NO_SUBSTREAMS|NO_REPARSETAG);
1336 size_t num_names = 0;
1337 unsigned int num_streams = 0;
1338 struct stream_struct *streams = NULL;
1339
1340 /* Do we have any EA's ? */
1341 status = get_ea_names_from_file(ctx, conn, fsp,
1342 smb_fname->base_name, NULL, &num_names);
1343 if (NT_STATUS_IS_OK(status) && num_names) {
1344 file_status &= ~NO_EAS;
1345 }
1346 status = vfs_streaminfo(conn, NULL, smb_fname->base_name, ctx,
1347 &num_streams, &streams);
1348 /* There is always one stream, ::$DATA. */
1349 if (NT_STATUS_IS_OK(status) && num_streams > 1) {
1350 file_status &= ~NO_SUBSTREAMS;
1351 }
1352 TALLOC_FREE(streams);
1353 SSVAL(p,2,file_status);
1354 }
1355 p += 4;
1356 SCVAL(p,0,fsp->is_directory ? 1 : 0);
1357
1358 if (flags & EXTENDED_RESPONSE_REQUIRED) {
1359 uint32_t perms = 0;
1360 p += 25;
1361 if (fsp->is_directory ||
1362 fsp->can_write ||
1363 can_write_to_file(conn, smb_fname)) {
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
1385void reply_ntcancel(struct smb_request *req)
1386{
1387 struct smbXsrv_connection *xconn = req->xconn;
1388 struct smbd_server_connection *sconn = req->sconn;
1389
1390 /*
1391 * Go through and cancel any pending change notifies.
1392 */
1393
1394 START_PROFILE(SMBntcancel);
1395 srv_cancel_sign_response(xconn);
1396 remove_pending_change_notify_requests_by_mid(sconn, req->mid);
1397 remove_pending_lock_requests_by_mid_smb1(sconn, req->mid);
1398
1399 DEBUG(3,("reply_ntcancel: cancel called on mid = %llu.\n",
1400 (unsigned long long)req->mid));
1401
1402 END_PROFILE(SMBntcancel);
1403 return;
1404}
1405
1406/****************************************************************************
1407 Copy a file.
1408****************************************************************************/
1409
1410static NTSTATUS copy_internals(TALLOC_CTX *ctx,
1411 connection_struct *conn,
1412 struct smb_request *req,
1413 struct smb_filename *smb_fname_src,
1414 struct smb_filename *smb_fname_dst,
1415 uint32_t attrs)
1416{
1417 files_struct *fsp1,*fsp2;
1418 uint32_t fattr;
1419 int info;
1420 off_t ret=-1;
1421 NTSTATUS status = NT_STATUS_OK;
1422 char *parent;
1423
1424 if (!CAN_WRITE(conn)) {
1425 status = NT_STATUS_MEDIA_WRITE_PROTECTED;
1426 goto out;
1427 }
1428
1429 /* Source must already exist. */
1430 if (!VALID_STAT(smb_fname_src->st)) {
1431 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
1432 goto out;
1433 }
1434
1435 /* Ensure attributes match. */
1436 fattr = dos_mode(conn, smb_fname_src);
1437 if ((fattr & ~attrs) & (FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM)) {
1438 status = NT_STATUS_NO_SUCH_FILE;
1439 goto out;
1440 }
1441
1442 /* Disallow if dst file already exists. */
1443 if (VALID_STAT(smb_fname_dst->st)) {
1444 status = NT_STATUS_OBJECT_NAME_COLLISION;
1445 goto out;
1446 }
1447
1448 /* No links from a directory. */
1449 if (S_ISDIR(smb_fname_src->st.st_ex_mode)) {
1450 status = NT_STATUS_FILE_IS_A_DIRECTORY;
1451 goto out;
1452 }
1453
1454 DEBUG(10,("copy_internals: doing file copy %s to %s\n",
1455 smb_fname_str_dbg(smb_fname_src),
1456 smb_fname_str_dbg(smb_fname_dst)));
1457
1458 status = SMB_VFS_CREATE_FILE(
1459 conn, /* conn */
1460 req, /* req */
1461 0, /* root_dir_fid */
1462 smb_fname_src, /* fname */
1463 FILE_READ_DATA|FILE_READ_ATTRIBUTES|
1464 FILE_READ_EA, /* access_mask */
1465 (FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
1466 FILE_SHARE_DELETE),
1467 FILE_OPEN, /* create_disposition*/
1468 0, /* create_options */
1469 FILE_ATTRIBUTE_NORMAL, /* file_attributes */
1470 NO_OPLOCK, /* oplock_request */
1471 NULL, /* lease */
1472 0, /* allocation_size */
1473 0, /* private_flags */
1474 NULL, /* sd */
1475 NULL, /* ea_list */
1476 &fsp1, /* result */
1477 &info, /* pinfo */
1478 NULL, NULL); /* create context */
1479
1480 if (!NT_STATUS_IS_OK(status)) {
1481 goto out;
1482 }
1483
1484 status = SMB_VFS_CREATE_FILE(
1485 conn, /* conn */
1486 req, /* req */
1487 0, /* root_dir_fid */
1488 smb_fname_dst, /* fname */
1489 FILE_WRITE_DATA|FILE_WRITE_ATTRIBUTES|
1490 FILE_WRITE_EA, /* access_mask */
1491 (FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
1492 FILE_SHARE_DELETE),
1493 FILE_CREATE, /* create_disposition*/
1494 0, /* create_options */
1495 fattr, /* file_attributes */
1496 NO_OPLOCK, /* oplock_request */
1497 NULL, /* lease */
1498 0, /* allocation_size */
1499 0, /* private_flags */
1500 NULL, /* sd */
1501 NULL, /* ea_list */
1502 &fsp2, /* result */
1503 &info, /* pinfo */
1504 NULL, NULL); /* create context */
1505
1506 if (!NT_STATUS_IS_OK(status)) {
1507 close_file(NULL, fsp1, ERROR_CLOSE);
1508 goto out;
1509 }
1510
1511 if (smb_fname_src->st.st_ex_size) {
1512 ret = vfs_transfer_file(fsp1, fsp2, smb_fname_src->st.st_ex_size);
1513 }
1514
1515 /*
1516 * As we are opening fsp1 read-only we only expect
1517 * an error on close on fsp2 if we are out of space.
1518 * Thus we don't look at the error return from the
1519 * close of fsp1.
1520 */
1521 close_file(NULL, fsp1, NORMAL_CLOSE);
1522
1523 /* Ensure the modtime is set correctly on the destination file. */
1524 set_close_write_time(fsp2, smb_fname_src->st.st_ex_mtime);
1525
1526 status = close_file(NULL, fsp2, NORMAL_CLOSE);
1527
1528 /* Grrr. We have to do this as open_file_ntcreate adds FILE_ATTRIBUTE_ARCHIVE when it
1529 creates the file. This isn't the correct thing to do in the copy
1530 case. JRA */
1531 if (!parent_dirname(talloc_tos(), smb_fname_dst->base_name, &parent,
1532 NULL)) {
1533 status = NT_STATUS_NO_MEMORY;
1534 goto out;
1535 }
1536 file_set_dosmode(conn, smb_fname_dst, fattr, parent, false);
1537 TALLOC_FREE(parent);
1538
1539 if (ret < (off_t)smb_fname_src->st.st_ex_size) {
1540 status = NT_STATUS_DISK_FULL;
1541 goto out;
1542 }
1543 out:
1544 if (!NT_STATUS_IS_OK(status)) {
1545 DEBUG(3,("copy_internals: Error %s copy file %s to %s\n",
1546 nt_errstr(status), smb_fname_str_dbg(smb_fname_src),
1547 smb_fname_str_dbg(smb_fname_dst)));
1548 }
1549
1550 return status;
1551}
1552
1553/****************************************************************************
1554 Reply to a NT rename request.
1555****************************************************************************/
1556
1557void reply_ntrename(struct smb_request *req)
1558{
1559 connection_struct *conn = req->conn;
1560 struct smb_filename *smb_fname_old = NULL;
1561 struct smb_filename *smb_fname_new = NULL;
1562 char *oldname = NULL;
1563 char *newname = NULL;
1564 const char *p;
1565 NTSTATUS status;
1566 bool src_has_wcard = False;
1567 bool dest_has_wcard = False;
1568 uint32_t attrs;
1569 uint32_t ucf_flags_src = (req->posix_pathnames ? UCF_POSIX_PATHNAMES : 0);
1570 uint32_t ucf_flags_dst = (req->posix_pathnames ? UCF_POSIX_PATHNAMES : 0);
1571 uint16_t rename_type;
1572 TALLOC_CTX *ctx = talloc_tos();
1573 bool stream_rename = false;
1574
1575 START_PROFILE(SMBntrename);
1576
1577 if (req->wct < 4) {
1578 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1579 goto out;
1580 }
1581
1582 attrs = SVAL(req->vwv+0, 0);
1583 rename_type = SVAL(req->vwv+1, 0);
1584
1585 p = (const char *)req->buf + 1;
1586 p += srvstr_get_path_req_wcard(ctx, req, &oldname, p, STR_TERMINATE,
1587 &status, &src_has_wcard);
1588 if (!NT_STATUS_IS_OK(status)) {
1589 reply_nterror(req, status);
1590 goto out;
1591 }
1592
1593 if (!req->posix_pathnames && ms_has_wild(oldname)) {
1594 reply_nterror(req, NT_STATUS_OBJECT_PATH_SYNTAX_BAD);
1595 goto out;
1596 }
1597
1598 p++;
1599 p += srvstr_get_path_req_wcard(ctx, req, &newname, p, STR_TERMINATE,
1600 &status, &dest_has_wcard);
1601 if (!NT_STATUS_IS_OK(status)) {
1602 reply_nterror(req, status);
1603 goto out;
1604 }
1605
1606 if (!req->posix_pathnames) {
1607 /* The newname must begin with a ':' if the
1608 oldname contains a ':'. */
1609 if (strchr_m(oldname, ':')) {
1610 if (newname[0] != ':') {
1611 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1612 goto out;
1613 }
1614 stream_rename = true;
1615 }
1616 }
1617
1618 /*
1619 * If this is a rename operation, allow wildcards and save the
1620 * destination's last component.
1621 */
1622 if (rename_type == RENAME_FLAG_RENAME) {
1623 ucf_flags_src = UCF_COND_ALLOW_WCARD_LCOMP;
1624 ucf_flags_dst = UCF_COND_ALLOW_WCARD_LCOMP | UCF_SAVE_LCOMP;
1625 }
1626
1627 /* rename_internals() calls unix_convert(), so don't call it here. */
1628 status = filename_convert(ctx, conn,
1629 req->flags2 & FLAGS2_DFS_PATHNAMES,
1630 oldname,
1631 ucf_flags_src,
1632 NULL,
1633 &smb_fname_old);
1634 if (!NT_STATUS_IS_OK(status)) {
1635 if (NT_STATUS_EQUAL(status,
1636 NT_STATUS_PATH_NOT_COVERED)) {
1637 reply_botherror(req,
1638 NT_STATUS_PATH_NOT_COVERED,
1639 ERRSRV, ERRbadpath);
1640 goto out;
1641 }
1642 reply_nterror(req, status);
1643 goto out;
1644 }
1645
1646 status = filename_convert(ctx, conn,
1647 req->flags2 & FLAGS2_DFS_PATHNAMES,
1648 newname,
1649 ucf_flags_dst,
1650 &dest_has_wcard,
1651 &smb_fname_new);
1652 if (!NT_STATUS_IS_OK(status)) {
1653 if (NT_STATUS_EQUAL(status,
1654 NT_STATUS_PATH_NOT_COVERED)) {
1655 reply_botherror(req,
1656 NT_STATUS_PATH_NOT_COVERED,
1657 ERRSRV, ERRbadpath);
1658 goto out;
1659 }
1660 reply_nterror(req, status);
1661 goto out;
1662 }
1663
1664 if (stream_rename) {
1665 /* smb_fname_new must be the same as smb_fname_old. */
1666 TALLOC_FREE(smb_fname_new->base_name);
1667 smb_fname_new->base_name = talloc_strdup(smb_fname_new,
1668 smb_fname_old->base_name);
1669 if (!smb_fname_new->base_name) {
1670 reply_nterror(req, NT_STATUS_NO_MEMORY);
1671 goto out;
1672 }
1673 }
1674
1675 DEBUG(3,("reply_ntrename: %s -> %s\n",
1676 smb_fname_str_dbg(smb_fname_old),
1677 smb_fname_str_dbg(smb_fname_new)));
1678
1679 switch(rename_type) {
1680 case RENAME_FLAG_RENAME:
1681 status = rename_internals(ctx, conn, req,
1682 smb_fname_old, smb_fname_new,
1683 attrs, False, src_has_wcard,
1684 dest_has_wcard,
1685 DELETE_ACCESS);
1686 break;
1687 case RENAME_FLAG_HARD_LINK:
1688 if (src_has_wcard || dest_has_wcard) {
1689 /* No wildcards. */
1690 status = NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
1691 } else {
1692 status = hardlink_internals(ctx, conn,
1693 req,
1694 false,
1695 smb_fname_old,
1696 smb_fname_new);
1697 }
1698 break;
1699 case RENAME_FLAG_COPY:
1700 if (src_has_wcard || dest_has_wcard) {
1701 /* No wildcards. */
1702 status = NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
1703 } else {
1704 status = copy_internals(ctx, conn, req,
1705 smb_fname_old,
1706 smb_fname_new,
1707 attrs);
1708 }
1709 break;
1710 case RENAME_FLAG_MOVE_CLUSTER_INFORMATION:
1711 status = NT_STATUS_INVALID_PARAMETER;
1712 break;
1713 default:
1714 status = NT_STATUS_ACCESS_DENIED; /* Default error. */
1715 break;
1716 }
1717
1718 if (!NT_STATUS_IS_OK(status)) {
1719 if (open_was_deferred(req->xconn, req->mid)) {
1720 /* We have re-scheduled this call. */
1721 goto out;
1722 }
1723
1724 reply_nterror(req, status);
1725 goto out;
1726 }
1727
1728 reply_outbuf(req, 0, 0);
1729 out:
1730 END_PROFILE(SMBntrename);
1731 return;
1732}
1733
1734/****************************************************************************
1735 Reply to a notify change - queue the request and
1736 don't allow a directory to be opened.
1737****************************************************************************/
1738
1739static void smbd_smb1_notify_reply(struct smb_request *req,
1740 NTSTATUS error_code,
1741 uint8_t *buf, size_t len)
1742{
1743 send_nt_replies(req->conn, req, error_code, (char *)buf, len, NULL, 0);
1744}
1745
1746static void call_nt_transact_notify_change(connection_struct *conn,
1747 struct smb_request *req,
1748 uint16_t **ppsetup,
1749 uint32_t setup_count,
1750 char **ppparams,
1751 uint32_t parameter_count,
1752 char **ppdata, uint32_t data_count,
1753 uint32_t max_data_count,
1754 uint32_t max_param_count)
1755{
1756 uint16_t *setup = *ppsetup;
1757 files_struct *fsp;
1758 uint32_t filter;
1759 NTSTATUS status;
1760 bool recursive;
1761
1762 if(setup_count < 6) {
1763 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1764 return;
1765 }
1766
1767 fsp = file_fsp(req, SVAL(setup,4));
1768 filter = IVAL(setup, 0);
1769 recursive = (SVAL(setup, 6) != 0) ? True : False;
1770
1771 DEBUG(3,("call_nt_transact_notify_change\n"));
1772
1773 if(!fsp) {
1774 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
1775 return;
1776 }
1777
1778 {
1779 char *filter_string;
1780
1781 if (!(filter_string = notify_filter_string(NULL, filter))) {
1782 reply_nterror(req,NT_STATUS_NO_MEMORY);
1783 return;
1784 }
1785
1786 DEBUG(3,("call_nt_transact_notify_change: notify change "
1787 "called on %s, filter = %s, recursive = %d\n",
1788 fsp_str_dbg(fsp), filter_string, recursive));
1789
1790 TALLOC_FREE(filter_string);
1791 }
1792
1793 if((!fsp->is_directory) || (conn != fsp->conn)) {
1794 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1795 return;
1796 }
1797
1798 if (fsp->notify == NULL) {
1799
1800 status = change_notify_create(fsp, filter, recursive);
1801
1802 if (!NT_STATUS_IS_OK(status)) {
1803 DEBUG(10, ("change_notify_create returned %s\n",
1804 nt_errstr(status)));
1805 reply_nterror(req, status);
1806 return;
1807 }
1808 }
1809
1810 if (change_notify_fsp_has_changes(fsp)) {
1811
1812 /*
1813 * We've got changes pending, respond immediately
1814 */
1815
1816 /*
1817 * TODO: write a torture test to check the filtering behaviour
1818 * here.
1819 */
1820
1821 change_notify_reply(req,
1822 NT_STATUS_OK,
1823 max_param_count,
1824 fsp->notify,
1825 smbd_smb1_notify_reply);
1826
1827 /*
1828 * change_notify_reply() above has independently sent its
1829 * results
1830 */
1831 return;
1832 }
1833
1834 /*
1835 * No changes pending, queue the request
1836 */
1837
1838 status = change_notify_add_request(req,
1839 max_param_count,
1840 filter,
1841 recursive, fsp,
1842 smbd_smb1_notify_reply);
1843 if (!NT_STATUS_IS_OK(status)) {
1844 reply_nterror(req, status);
1845 }
1846 return;
1847}
1848
1849/****************************************************************************
1850 Reply to an NT transact rename command.
1851****************************************************************************/
1852
1853static void call_nt_transact_rename(connection_struct *conn,
1854 struct smb_request *req,
1855 uint16_t **ppsetup, uint32_t setup_count,
1856 char **ppparams, uint32_t parameter_count,
1857 char **ppdata, uint32_t data_count,
1858 uint32_t max_data_count)
1859{
1860 char *params = *ppparams;
1861 char *new_name = NULL;
1862 files_struct *fsp = NULL;
1863 bool dest_has_wcard = False;
1864 NTSTATUS status;
1865 TALLOC_CTX *ctx = talloc_tos();
1866
1867 if(parameter_count < 5) {
1868 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1869 return;
1870 }
1871
1872 fsp = file_fsp(req, SVAL(params, 0));
1873 if (!check_fsp(conn, req, fsp)) {
1874 return;
1875 }
1876 if (req->posix_pathnames) {
1877 srvstr_get_path_wcard_posix(ctx,
1878 params,
1879 req->flags2,
1880 &new_name,
1881 params+4,
1882 parameter_count - 4,
1883 STR_TERMINATE,
1884 &status,
1885 &dest_has_wcard);
1886 } else {
1887 srvstr_get_path_wcard(ctx,
1888 params,
1889 req->flags2,
1890 &new_name,
1891 params+4,
1892 parameter_count - 4,
1893 STR_TERMINATE,
1894 &status,
1895 &dest_has_wcard);
1896 }
1897
1898 if (!NT_STATUS_IS_OK(status)) {
1899 reply_nterror(req, status);
1900 return;
1901 }
1902
1903 /*
1904 * W2K3 ignores this request as the RAW-RENAME test
1905 * demonstrates, so we do.
1906 */
1907 send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0);
1908
1909 DEBUG(3,("nt transact rename from = %s, to = %s ignored!\n",
1910 fsp_str_dbg(fsp), new_name));
1911
1912 return;
1913}
1914
1915/******************************************************************************
1916 Fake up a completely empty SD.
1917*******************************************************************************/
1918
1919static NTSTATUS get_null_nt_acl(TALLOC_CTX *mem_ctx, struct security_descriptor **ppsd)
1920{
1921 size_t sd_size;
1922
1923 *ppsd = make_standard_sec_desc( mem_ctx, &global_sid_World, &global_sid_World, NULL, &sd_size);
1924 if(!*ppsd) {
1925 DEBUG(0,("get_null_nt_acl: Unable to malloc space for security descriptor.\n"));
1926 return NT_STATUS_NO_MEMORY;
1927 }
1928
1929 return NT_STATUS_OK;
1930}
1931
1932/****************************************************************************
1933 Reply to query a security descriptor.
1934 Callable from SMB1 and SMB2.
1935 If it returns NT_STATUS_BUFFER_TOO_SMALL, pdata_size is initialized with
1936 the required size.
1937****************************************************************************/
1938
1939NTSTATUS smbd_do_query_security_desc(connection_struct *conn,
1940 TALLOC_CTX *mem_ctx,
1941 files_struct *fsp,
1942 uint32_t security_info_wanted,
1943 uint32_t max_data_count,
1944 uint8_t **ppmarshalled_sd,
1945 size_t *psd_size)
1946{
1947 NTSTATUS status;
1948 struct security_descriptor *psd = NULL;
1949 TALLOC_CTX *frame = talloc_stackframe();
1950
1951 /*
1952 * Get the permissions to return.
1953 */
1954
1955 if ((security_info_wanted & SECINFO_SACL) &&
1956 !(fsp->access_mask & SEC_FLAG_SYSTEM_SECURITY)) {
1957 DEBUG(10, ("Access to SACL denied.\n"));
1958 TALLOC_FREE(frame);
1959 return NT_STATUS_ACCESS_DENIED;
1960 }
1961
1962 if ((security_info_wanted & (SECINFO_DACL|SECINFO_OWNER|SECINFO_GROUP)) &&
1963 !(fsp->access_mask & SEC_STD_READ_CONTROL)) {
1964 DEBUG(10, ("Access to DACL, OWNER, or GROUP denied.\n"));
1965 TALLOC_FREE(frame);
1966 return NT_STATUS_ACCESS_DENIED;
1967 }
1968
1969 if (S_ISLNK(fsp->fsp_name->st.st_ex_mode)) {
1970 DEBUG(10, ("ACL get on symlink %s denied.\n",
1971 fsp_str_dbg(fsp)));
1972 TALLOC_FREE(frame);
1973 return NT_STATUS_ACCESS_DENIED;
1974 }
1975
1976 if (security_info_wanted & (SECINFO_DACL|SECINFO_OWNER|
1977 SECINFO_GROUP|SECINFO_SACL)) {
1978 /* Don't return SECINFO_LABEL if anything else was
1979 requested. See bug #8458. */
1980 security_info_wanted &= ~SECINFO_LABEL;
1981 }
1982
1983 if (!lp_nt_acl_support(SNUM(conn))) {
1984 status = get_null_nt_acl(frame, &psd);
1985 } else if (security_info_wanted & SECINFO_LABEL) {
1986 /* Like W2K3 return a null object. */
1987 status = get_null_nt_acl(frame, &psd);
1988 } else {
1989 status = SMB_VFS_FGET_NT_ACL(
1990 fsp, security_info_wanted, frame, &psd);
1991 }
1992 if (!NT_STATUS_IS_OK(status)) {
1993 TALLOC_FREE(frame);
1994 return status;
1995 }
1996
1997 if (!(security_info_wanted & SECINFO_OWNER)) {
1998 psd->owner_sid = NULL;
1999 }
2000 if (!(security_info_wanted & SECINFO_GROUP)) {
2001 psd->group_sid = NULL;
2002 }
2003 if (!(security_info_wanted & SECINFO_DACL)) {
2004 psd->type &= ~SEC_DESC_DACL_PRESENT;
2005 psd->dacl = NULL;
2006 }
2007 if (!(security_info_wanted & SECINFO_SACL)) {
2008 psd->type &= ~SEC_DESC_SACL_PRESENT;
2009 psd->sacl = NULL;
2010 }
2011
2012 /* If the SACL/DACL is NULL, but was requested, we mark that it is
2013 * present in the reply to match Windows behavior */
2014 if (psd->sacl == NULL &&
2015 security_info_wanted & SECINFO_SACL)
2016 psd->type |= SEC_DESC_SACL_PRESENT;
2017 if (psd->dacl == NULL &&
2018 security_info_wanted & SECINFO_DACL)
2019 psd->type |= SEC_DESC_DACL_PRESENT;
2020
2021 if (security_info_wanted & SECINFO_LABEL) {
2022 /* Like W2K3 return a null object. */
2023 psd->owner_sid = NULL;
2024 psd->group_sid = NULL;
2025 psd->dacl = NULL;
2026 psd->sacl = NULL;
2027 psd->type &= ~(SEC_DESC_DACL_PRESENT|SEC_DESC_SACL_PRESENT);
2028 }
2029
2030 *psd_size = ndr_size_security_descriptor(psd, 0);
2031
2032 DEBUG(3,("smbd_do_query_security_desc: sd_size = %lu.\n",
2033 (unsigned long)*psd_size));
2034
2035 if (DEBUGLEVEL >= 10) {
2036 DEBUG(10,("smbd_do_query_security_desc for file %s\n",
2037 fsp_str_dbg(fsp)));
2038 NDR_PRINT_DEBUG(security_descriptor, psd);
2039 }
2040
2041 if (max_data_count < *psd_size) {
2042 TALLOC_FREE(frame);
2043 return NT_STATUS_BUFFER_TOO_SMALL;
2044 }
2045
2046 status = marshall_sec_desc(mem_ctx, psd,
2047 ppmarshalled_sd, psd_size);
2048
2049 if (!NT_STATUS_IS_OK(status)) {
2050 TALLOC_FREE(frame);
2051 return status;
2052 }
2053
2054 TALLOC_FREE(frame);
2055 return NT_STATUS_OK;
2056}
2057
2058/****************************************************************************
2059 SMB1 reply to query a security descriptor.
2060****************************************************************************/
2061
2062static void call_nt_transact_query_security_desc(connection_struct *conn,
2063 struct smb_request *req,
2064 uint16_t **ppsetup,
2065 uint32_t setup_count,
2066 char **ppparams,
2067 uint32_t parameter_count,
2068 char **ppdata,
2069 uint32_t data_count,
2070 uint32_t max_data_count)
2071{
2072 char *params = *ppparams;
2073 char *data = *ppdata;
2074 size_t sd_size = 0;
2075 uint32_t security_info_wanted;
2076 files_struct *fsp = NULL;
2077 NTSTATUS status;
2078 uint8_t *marshalled_sd = NULL;
2079
2080 if(parameter_count < 8) {
2081 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2082 return;
2083 }
2084
2085 fsp = file_fsp(req, SVAL(params,0));
2086 if(!fsp) {
2087 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
2088 return;
2089 }
2090
2091 security_info_wanted = IVAL(params,4);
2092
2093 DEBUG(3,("call_nt_transact_query_security_desc: file = %s, "
2094 "info_wanted = 0x%x\n", fsp_str_dbg(fsp),
2095 (unsigned int)security_info_wanted));
2096
2097 params = nttrans_realloc(ppparams, 4);
2098 if(params == NULL) {
2099 reply_nterror(req, NT_STATUS_NO_MEMORY);
2100 return;
2101 }
2102
2103 /*
2104 * Get the permissions to return.
2105 */
2106
2107 status = smbd_do_query_security_desc(conn,
2108 talloc_tos(),
2109 fsp,
2110 security_info_wanted &
2111 SMB_SUPPORTED_SECINFO_FLAGS,
2112 max_data_count,
2113 &marshalled_sd,
2114 &sd_size);
2115
2116 if (NT_STATUS_EQUAL(status, NT_STATUS_BUFFER_TOO_SMALL)) {
2117 SIVAL(params,0,(uint32_t)sd_size);
2118 send_nt_replies(conn, req, NT_STATUS_BUFFER_TOO_SMALL,
2119 params, 4, NULL, 0);
2120 return;
2121 }
2122
2123 if (!NT_STATUS_IS_OK(status)) {
2124 reply_nterror(req, status);
2125 return;
2126 }
2127
2128 SMB_ASSERT(sd_size > 0);
2129
2130 SIVAL(params,0,(uint32_t)sd_size);
2131
2132 if (max_data_count < sd_size) {
2133 send_nt_replies(conn, req, NT_STATUS_BUFFER_TOO_SMALL,
2134 params, 4, NULL, 0);
2135 return;
2136 }
2137
2138 /*
2139 * Allocate the data we will return.
2140 */
2141
2142 data = nttrans_realloc(ppdata, sd_size);
2143 if(data == NULL) {
2144 reply_nterror(req, NT_STATUS_NO_MEMORY);
2145 return;
2146 }
2147
2148 memcpy(data, marshalled_sd, sd_size);
2149
2150 send_nt_replies(conn, req, NT_STATUS_OK, params, 4, data, (int)sd_size);
2151
2152 return;
2153}
2154
2155/****************************************************************************
2156 Reply to set a security descriptor. Map to UNIX perms or POSIX ACLs.
2157****************************************************************************/
2158
2159static void call_nt_transact_set_security_desc(connection_struct *conn,
2160 struct smb_request *req,
2161 uint16_t **ppsetup,
2162 uint32_t setup_count,
2163 char **ppparams,
2164 uint32_t parameter_count,
2165 char **ppdata,
2166 uint32_t data_count,
2167 uint32_t max_data_count)
2168{
2169 char *params= *ppparams;
2170 char *data = *ppdata;
2171 files_struct *fsp = NULL;
2172 uint32_t security_info_sent = 0;
2173 NTSTATUS status;
2174
2175 if(parameter_count < 8) {
2176 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2177 return;
2178 }
2179
2180 if((fsp = file_fsp(req, SVAL(params,0))) == NULL) {
2181 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
2182 return;
2183 }
2184
2185 if (!CAN_WRITE(fsp->conn)) {
2186 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
2187 return;
2188 }
2189
2190 if(!lp_nt_acl_support(SNUM(conn))) {
2191 goto done;
2192 }
2193
2194 security_info_sent = IVAL(params,4);
2195
2196 DEBUG(3,("call_nt_transact_set_security_desc: file = %s, sent 0x%x\n",
2197 fsp_str_dbg(fsp), (unsigned int)security_info_sent));
2198
2199 if (data_count == 0) {
2200 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2201 return;
2202 }
2203
2204 status = set_sd_blob(fsp, (uint8_t *)data, data_count,
2205 security_info_sent & SMB_SUPPORTED_SECINFO_FLAGS);
2206 if (!NT_STATUS_IS_OK(status)) {
2207 reply_nterror(req, status);
2208 return;
2209 }
2210
2211 done:
2212 send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0);
2213 return;
2214}
2215
2216/****************************************************************************
2217 Reply to NT IOCTL
2218****************************************************************************/
2219
2220static void call_nt_transact_ioctl(connection_struct *conn,
2221 struct smb_request *req,
2222 uint16_t **ppsetup, uint32_t setup_count,
2223 char **ppparams, uint32_t parameter_count,
2224 char **ppdata, uint32_t data_count,
2225 uint32_t max_data_count)
2226{
2227 NTSTATUS status;
2228 uint32_t function;
2229 uint16_t fidnum;
2230 files_struct *fsp;
2231 uint8_t isFSctl;
2232 uint8_t compfilter;
2233 char *out_data = NULL;
2234 uint32_t out_data_len = 0;
2235 char *pdata = *ppdata;
2236 TALLOC_CTX *ctx = talloc_tos();
2237
2238 if (setup_count != 8) {
2239 DEBUG(3,("call_nt_transact_ioctl: invalid setup count %d\n", setup_count));
2240 reply_nterror(req, NT_STATUS_NOT_SUPPORTED);
2241 return;
2242 }
2243
2244 function = IVAL(*ppsetup, 0);
2245 fidnum = SVAL(*ppsetup, 4);
2246 isFSctl = CVAL(*ppsetup, 6);
2247 compfilter = CVAL(*ppsetup, 7);
2248
2249 DEBUG(10, ("call_nt_transact_ioctl: function[0x%08X] FID[0x%04X] isFSctl[0x%02X] compfilter[0x%02X]\n",
2250 function, fidnum, isFSctl, compfilter));
2251
2252 fsp=file_fsp(req, fidnum);
2253
2254 /*
2255 * We don't really implement IOCTLs, especially on files.
2256 */
2257 if (!isFSctl) {
2258 DEBUG(10, ("isFSctl: 0x%02X indicates IOCTL, not FSCTL!\n",
2259 isFSctl));
2260 reply_nterror(req, NT_STATUS_NOT_SUPPORTED);
2261 return;
2262 }
2263
2264 /* Has to be for an open file! */
2265 if (!check_fsp_open(conn, req, fsp)) {
2266 return;
2267 }
2268
2269 SMB_PERFCOUNT_SET_IOCTL(&req->pcd, function);
2270
2271 /*
2272 * out_data might be allocated by the VFS module, but talloc should be
2273 * used, and should be cleaned up when the request ends.
2274 */
2275 status = SMB_VFS_FSCTL(fsp,
2276 ctx,
2277 function,
2278 req->flags2,
2279 (uint8_t *)pdata,
2280 data_count,
2281 (uint8_t **)&out_data,
2282 max_data_count,
2283 &out_data_len);
2284 if (!NT_STATUS_IS_OK(status)) {
2285 reply_nterror(req, status);
2286 } else {
2287 send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, out_data, out_data_len);
2288 }
2289}
2290
2291
2292#ifdef HAVE_SYS_QUOTAS
2293/****************************************************************************
2294 Reply to get user quota
2295****************************************************************************/
2296
2297static void call_nt_transact_get_user_quota(connection_struct *conn,
2298 struct smb_request *req,
2299 uint16_t **ppsetup,
2300 uint32_t setup_count,
2301 char **ppparams,
2302 uint32_t parameter_count,
2303 char **ppdata,
2304 uint32_t data_count,
2305 uint32_t max_data_count)
2306{
2307 NTSTATUS nt_status = NT_STATUS_OK;
2308 char *params = *ppparams;
2309 char *pdata = *ppdata;
2310 char *entry;
2311 int data_len=0,param_len=0;
2312 int qt_len=0;
2313 int entry_len = 0;
2314 files_struct *fsp = NULL;
2315 uint16_t level = 0;
2316 size_t sid_len;
2317 struct dom_sid sid;
2318 bool start_enum = True;
2319 SMB_NTQUOTA_STRUCT qt;
2320 SMB_NTQUOTA_LIST *tmp_list;
2321 SMB_NTQUOTA_HANDLE *qt_handle = NULL;
2322
2323 ZERO_STRUCT(qt);
2324
2325 /* access check */
2326 if (get_current_uid(conn) != sec_initial_uid()) {
2327 DEBUG(1,("get_user_quota: access_denied service [%s] user "
2328 "[%s]\n", lp_servicename(talloc_tos(), SNUM(conn)),
2329 conn->session_info->unix_info->unix_name));
2330 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
2331 return;
2332 }
2333
2334 /*
2335 * Ensure minimum number of parameters sent.
2336 */
2337
2338 if (parameter_count < 4) {
2339 DEBUG(0,("TRANSACT_GET_USER_QUOTA: requires %d >= 4 bytes parameters\n",parameter_count));
2340 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2341 return;
2342 }
2343
2344 /* maybe we can check the quota_fnum */
2345 fsp = file_fsp(req, SVAL(params,0));
2346 if (!check_fsp_ntquota_handle(conn, req, fsp)) {
2347 DEBUG(3,("TRANSACT_GET_USER_QUOTA: no valid QUOTA HANDLE\n"));
2348 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
2349 return;
2350 }
2351
2352 /* the NULL pointer checking for fsp->fake_file_handle->pd
2353 * is done by CHECK_NTQUOTA_HANDLE_OK()
2354 */
2355 qt_handle = (SMB_NTQUOTA_HANDLE *)fsp->fake_file_handle->private_data;
2356
2357 level = SVAL(params,2);
2358
2359 /* unknown 12 bytes leading in params */
2360
2361 switch (level) {
2362 case TRANSACT_GET_USER_QUOTA_LIST_CONTINUE:
2363 /* seems that we should continue with the enum here --metze */
2364
2365 if (qt_handle->quota_list!=NULL &&
2366 qt_handle->tmp_list==NULL) {
2367
2368 /* free the list */
2369 free_ntquota_list(&(qt_handle->quota_list));
2370
2371 /* Realloc the size of parameters and data we will return */
2372 param_len = 4;
2373 params = nttrans_realloc(ppparams, param_len);
2374 if(params == NULL) {
2375 reply_nterror(req, NT_STATUS_NO_MEMORY);
2376 return;
2377 }
2378
2379 data_len = 0;
2380 SIVAL(params,0,data_len);
2381
2382 break;
2383 }
2384
2385 start_enum = False;
2386
2387 case TRANSACT_GET_USER_QUOTA_LIST_START:
2388
2389 if (qt_handle->quota_list==NULL &&
2390 qt_handle->tmp_list==NULL) {
2391 start_enum = True;
2392 }
2393
2394 if (start_enum && vfs_get_user_ntquota_list(fsp,&(qt_handle->quota_list))!=0) {
2395 reply_nterror(req, NT_STATUS_INTERNAL_ERROR);
2396 return;
2397 }
2398
2399 /* Realloc the size of parameters and data we will return */
2400 param_len = 4;
2401 params = nttrans_realloc(ppparams, param_len);
2402 if(params == NULL) {
2403 reply_nterror(req, NT_STATUS_NO_MEMORY);
2404 return;
2405 }
2406
2407 /* we should not trust the value in max_data_count*/
2408 max_data_count = MIN(max_data_count,2048);
2409
2410 pdata = nttrans_realloc(ppdata, max_data_count);/* should be max data count from client*/
2411 if(pdata == NULL) {
2412 reply_nterror(req, NT_STATUS_NO_MEMORY);
2413 return;
2414 }
2415
2416 entry = pdata;
2417
2418 /* set params Size of returned Quota Data 4 bytes*/
2419 /* but set it later when we know it */
2420
2421 /* for each entry push the data */
2422
2423 if (start_enum) {
2424 qt_handle->tmp_list = qt_handle->quota_list;
2425 }
2426
2427 tmp_list = qt_handle->tmp_list;
2428
2429 for (;((tmp_list!=NULL)&&((qt_len +40+SID_MAX_SIZE)<max_data_count));
2430 tmp_list=tmp_list->next,entry+=entry_len,qt_len+=entry_len) {
2431
2432 sid_len = ndr_size_dom_sid(
2433 &tmp_list->quotas->sid, 0);
2434 entry_len = 40 + sid_len;
2435
2436 /* nextoffset entry 4 bytes */
2437 SIVAL(entry,0,entry_len);
2438
2439 /* then the len of the SID 4 bytes */
2440 SIVAL(entry,4,sid_len);
2441
2442 /* unknown data 8 bytes uint64_t */
2443 SBIG_UINT(entry,8,(uint64_t)0); /* this is not 0 in windows...-metze*/
2444
2445 /* the used disk space 8 bytes uint64_t */
2446 SBIG_UINT(entry,16,tmp_list->quotas->usedspace);
2447
2448 /* the soft quotas 8 bytes uint64_t */
2449 SBIG_UINT(entry,24,tmp_list->quotas->softlim);
2450
2451 /* the hard quotas 8 bytes uint64_t */
2452 SBIG_UINT(entry,32,tmp_list->quotas->hardlim);
2453
2454 /* and now the SID */
2455 sid_linearize((uint8_t *)(entry+40), sid_len,
2456 &tmp_list->quotas->sid);
2457 }
2458
2459 qt_handle->tmp_list = tmp_list;
2460
2461 /* overwrite the offset of the last entry */
2462 SIVAL(entry-entry_len,0,0);
2463
2464 data_len = 4+qt_len;
2465 /* overwrite the params quota_data_len */
2466 SIVAL(params,0,data_len);
2467
2468 break;
2469
2470 case TRANSACT_GET_USER_QUOTA_FOR_SID:
2471
2472 /* unknown 4 bytes IVAL(pdata,0) */
2473
2474 if (data_count < 8) {
2475 DEBUG(0,("TRANSACT_GET_USER_QUOTA_FOR_SID: requires %d >= %d bytes data\n",data_count,8));
2476 reply_nterror(req, NT_STATUS_INVALID_LEVEL);
2477 return;
2478 }
2479
2480 sid_len = IVAL(pdata,4);
2481 /* Ensure this is less than 1mb. */
2482 if (sid_len > (1024*1024)) {
2483 reply_nterror(req, NT_STATUS_NO_MEMORY);
2484 return;
2485 }
2486
2487 if (data_count < 8+sid_len) {
2488 DEBUG(0,("TRANSACT_GET_USER_QUOTA_FOR_SID: requires %d >= %lu bytes data\n",data_count,(unsigned long)(8+sid_len)));
2489 reply_nterror(req, NT_STATUS_INVALID_LEVEL);
2490 return;
2491 }
2492
2493 data_len = 4+40+sid_len;
2494
2495 if (max_data_count < data_len) {
2496 DEBUG(0,("TRANSACT_GET_USER_QUOTA_FOR_SID: max_data_count(%d) < data_len(%d)\n",
2497 max_data_count, data_len));
2498 param_len = 4;
2499 SIVAL(params,0,data_len);
2500 data_len = 0;
2501 nt_status = NT_STATUS_BUFFER_TOO_SMALL;
2502 break;
2503 }
2504
2505 if (!sid_parse((const uint8_t *)(pdata+8), sid_len,
2506 &sid)) {
2507 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2508 return;
2509 }
2510
2511 if (vfs_get_ntquota(fsp, SMB_USER_QUOTA_TYPE, &sid, &qt)!=0) {
2512 ZERO_STRUCT(qt);
2513 /*
2514 * we have to return zero's in all fields
2515 * instead of returning an error here
2516 * --metze
2517 */
2518 }
2519
2520 /* Realloc the size of parameters and data we will return */
2521 param_len = 4;
2522 params = nttrans_realloc(ppparams, param_len);
2523 if(params == NULL) {
2524 reply_nterror(req, NT_STATUS_NO_MEMORY);
2525 return;
2526 }
2527
2528 pdata = nttrans_realloc(ppdata, data_len);
2529 if(pdata == NULL) {
2530 reply_nterror(req, NT_STATUS_NO_MEMORY);
2531 return;
2532 }
2533
2534 entry = pdata;
2535
2536 /* set params Size of returned Quota Data 4 bytes*/
2537 SIVAL(params,0,data_len);
2538
2539 /* nextoffset entry 4 bytes */
2540 SIVAL(entry,0,0);
2541
2542 /* then the len of the SID 4 bytes */
2543 SIVAL(entry,4,sid_len);
2544
2545 /* unknown data 8 bytes uint64_t */
2546 SBIG_UINT(entry,8,(uint64_t)0); /* this is not 0 in windows...-mezte*/
2547
2548 /* the used disk space 8 bytes uint64_t */
2549 SBIG_UINT(entry,16,qt.usedspace);
2550
2551 /* the soft quotas 8 bytes uint64_t */
2552 SBIG_UINT(entry,24,qt.softlim);
2553
2554 /* the hard quotas 8 bytes uint64_t */
2555 SBIG_UINT(entry,32,qt.hardlim);
2556
2557 /* and now the SID */
2558 sid_linearize((uint8_t *)(entry+40), sid_len, &sid);
2559
2560 break;
2561
2562 default:
2563 DEBUG(0, ("do_nt_transact_get_user_quota: %s: unknown "
2564 "level 0x%04hX\n",
2565 fsp_fnum_dbg(fsp), level));
2566 reply_nterror(req, NT_STATUS_INVALID_LEVEL);
2567 return;
2568 break;
2569 }
2570
2571 send_nt_replies(conn, req, nt_status, params, param_len,
2572 pdata, data_len);
2573}
2574
2575/****************************************************************************
2576 Reply to set user quota
2577****************************************************************************/
2578
2579static void call_nt_transact_set_user_quota(connection_struct *conn,
2580 struct smb_request *req,
2581 uint16_t **ppsetup,
2582 uint32_t setup_count,
2583 char **ppparams,
2584 uint32_t parameter_count,
2585 char **ppdata,
2586 uint32_t data_count,
2587 uint32_t max_data_count)
2588{
2589 char *params = *ppparams;
2590 char *pdata = *ppdata;
2591 int data_len=0,param_len=0;
2592 SMB_NTQUOTA_STRUCT qt;
2593 size_t sid_len;
2594 struct dom_sid sid;
2595 files_struct *fsp = NULL;
2596
2597 ZERO_STRUCT(qt);
2598
2599 /* access check */
2600 if (get_current_uid(conn) != 0) {
2601 DEBUG(1,("set_user_quota: access_denied service [%s] user "
2602 "[%s]\n", lp_servicename(talloc_tos(), SNUM(conn)),
2603 conn->session_info->unix_info->unix_name));
2604 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
2605 return;
2606 }
2607
2608 /*
2609 * Ensure minimum number of parameters sent.
2610 */
2611
2612 if (parameter_count < 2) {
2613 DEBUG(0,("TRANSACT_SET_USER_QUOTA: requires %d >= 2 bytes parameters\n",parameter_count));
2614 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2615 return;
2616 }
2617
2618 /* maybe we can check the quota_fnum */
2619 fsp = file_fsp(req, SVAL(params,0));
2620 if (!check_fsp_ntquota_handle(conn, req, fsp)) {
2621 DEBUG(3,("TRANSACT_GET_USER_QUOTA: no valid QUOTA HANDLE\n"));
2622 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
2623 return;
2624 }
2625
2626 if (data_count < 40) {
2627 DEBUG(0,("TRANSACT_SET_USER_QUOTA: requires %d >= %d bytes data\n",data_count,40));
2628 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2629 return;
2630 }
2631
2632 /* offset to next quota record.
2633 * 4 bytes IVAL(pdata,0)
2634 * unused here...
2635 */
2636
2637 /* sid len */
2638 sid_len = IVAL(pdata,4);
2639
2640 if (data_count < 40+sid_len || (40+sid_len < sid_len)) {
2641 DEBUG(0,("TRANSACT_SET_USER_QUOTA: requires %d >= %lu bytes data\n",data_count,(unsigned long)40+sid_len));
2642 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2643 return;
2644 }
2645
2646 /* unknown 8 bytes in pdata
2647 * maybe its the change time in NTTIME
2648 */
2649
2650 /* the used space 8 bytes (uint64_t)*/
2651 qt.usedspace = BVAL(pdata,16);
2652
2653 /* the soft quotas 8 bytes (uint64_t)*/
2654 qt.softlim = BVAL(pdata,24);
2655
2656 /* the hard quotas 8 bytes (uint64_t)*/
2657 qt.hardlim = BVAL(pdata,32);
2658
2659 if (!sid_parse((const uint8_t *)(pdata+40), sid_len, &sid)) {
2660 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2661 return;
2662 }
2663
2664 DEBUGADD(8,("SID: %s\n", sid_string_dbg(&sid)));
2665
2666 /* 44 unknown bytes left... */
2667
2668 if (vfs_set_ntquota(fsp, SMB_USER_QUOTA_TYPE, &sid, &qt)!=0) {
2669 reply_nterror(req, NT_STATUS_INTERNAL_ERROR);
2670 return;
2671 }
2672
2673 send_nt_replies(conn, req, NT_STATUS_OK, params, param_len,
2674 pdata, data_len);
2675}
2676#endif /* HAVE_SYS_QUOTAS */
2677
2678static void handle_nttrans(connection_struct *conn,
2679 struct trans_state *state,
2680 struct smb_request *req)
2681{
2682 if (get_Protocol() >= PROTOCOL_NT1) {
2683 req->flags2 |= 0x40; /* IS_LONG_NAME */
2684 SSVAL(discard_const_p(uint8_t, req->inbuf),smb_flg2,req->flags2);
2685 }
2686
2687
2688 SMB_PERFCOUNT_SET_SUBOP(&req->pcd, state->call);
2689
2690 /* Now we must call the relevant NT_TRANS function */
2691 switch(state->call) {
2692 case NT_TRANSACT_CREATE:
2693 {
2694 START_PROFILE(NT_transact_create);
2695 call_nt_transact_create(
2696 conn, req,
2697 &state->setup, state->setup_count,
2698 &state->param, state->total_param,
2699 &state->data, state->total_data,
2700 state->max_data_return);
2701 END_PROFILE(NT_transact_create);
2702 break;
2703 }
2704
2705 case NT_TRANSACT_IOCTL:
2706 {
2707 START_PROFILE(NT_transact_ioctl);
2708 call_nt_transact_ioctl(
2709 conn, req,
2710 &state->setup, state->setup_count,
2711 &state->param, state->total_param,
2712 &state->data, state->total_data,
2713 state->max_data_return);
2714 END_PROFILE(NT_transact_ioctl);
2715 break;
2716 }
2717
2718 case NT_TRANSACT_SET_SECURITY_DESC:
2719 {
2720 START_PROFILE(NT_transact_set_security_desc);
2721 call_nt_transact_set_security_desc(
2722 conn, req,
2723 &state->setup, state->setup_count,
2724 &state->param, state->total_param,
2725 &state->data, state->total_data,
2726 state->max_data_return);
2727 END_PROFILE(NT_transact_set_security_desc);
2728 break;
2729 }
2730
2731 case NT_TRANSACT_NOTIFY_CHANGE:
2732 {
2733 START_PROFILE(NT_transact_notify_change);
2734 call_nt_transact_notify_change(
2735 conn, req,
2736 &state->setup, state->setup_count,
2737 &state->param, state->total_param,
2738 &state->data, state->total_data,
2739 state->max_data_return,
2740 state->max_param_return);
2741 END_PROFILE(NT_transact_notify_change);
2742 break;
2743 }
2744
2745 case NT_TRANSACT_RENAME:
2746 {
2747 START_PROFILE(NT_transact_rename);
2748 call_nt_transact_rename(
2749 conn, req,
2750 &state->setup, state->setup_count,
2751 &state->param, state->total_param,
2752 &state->data, state->total_data,
2753 state->max_data_return);
2754 END_PROFILE(NT_transact_rename);
2755 break;
2756 }
2757
2758 case NT_TRANSACT_QUERY_SECURITY_DESC:
2759 {
2760 START_PROFILE(NT_transact_query_security_desc);
2761 call_nt_transact_query_security_desc(
2762 conn, req,
2763 &state->setup, state->setup_count,
2764 &state->param, state->total_param,
2765 &state->data, state->total_data,
2766 state->max_data_return);
2767 END_PROFILE(NT_transact_query_security_desc);
2768 break;
2769 }
2770
2771#ifdef HAVE_SYS_QUOTAS
2772 case NT_TRANSACT_GET_USER_QUOTA:
2773 {
2774 START_PROFILE(NT_transact_get_user_quota);
2775 call_nt_transact_get_user_quota(
2776 conn, req,
2777 &state->setup, state->setup_count,
2778 &state->param, state->total_param,
2779 &state->data, state->total_data,
2780 state->max_data_return);
2781 END_PROFILE(NT_transact_get_user_quota);
2782 break;
2783 }
2784
2785 case NT_TRANSACT_SET_USER_QUOTA:
2786 {
2787 START_PROFILE(NT_transact_set_user_quota);
2788 call_nt_transact_set_user_quota(
2789 conn, req,
2790 &state->setup, state->setup_count,
2791 &state->param, state->total_param,
2792 &state->data, state->total_data,
2793 state->max_data_return);
2794 END_PROFILE(NT_transact_set_user_quota);
2795 break;
2796 }
2797#endif /* HAVE_SYS_QUOTAS */
2798
2799 default:
2800 /* Error in request */
2801 DEBUG(0,("handle_nttrans: Unknown request %d in "
2802 "nttrans call\n", state->call));
2803 reply_nterror(req, NT_STATUS_INVALID_LEVEL);
2804 return;
2805 }
2806 return;
2807}
2808
2809/****************************************************************************
2810 Reply to a SMBNTtrans.
2811****************************************************************************/
2812
2813void reply_nttrans(struct smb_request *req)
2814{
2815 connection_struct *conn = req->conn;
2816 uint32_t pscnt;
2817 uint32_t psoff;
2818 uint32_t dscnt;
2819 uint32_t dsoff;
2820 uint16_t function_code;
2821 NTSTATUS result;
2822 struct trans_state *state;
2823
2824 START_PROFILE(SMBnttrans);
2825
2826 if (req->wct < 19) {
2827 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2828 END_PROFILE(SMBnttrans);
2829 return;
2830 }
2831
2832 pscnt = IVAL(req->vwv+9, 1);
2833 psoff = IVAL(req->vwv+11, 1);
2834 dscnt = IVAL(req->vwv+13, 1);
2835 dsoff = IVAL(req->vwv+15, 1);
2836 function_code = SVAL(req->vwv+18, 0);
2837
2838 if (IS_IPC(conn) && (function_code != NT_TRANSACT_CREATE)) {
2839 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
2840 END_PROFILE(SMBnttrans);
2841 return;
2842 }
2843
2844 result = allow_new_trans(conn->pending_trans, req->mid);
2845 if (!NT_STATUS_IS_OK(result)) {
2846 DEBUG(2, ("Got invalid nttrans request: %s\n", nt_errstr(result)));
2847 reply_nterror(req, result);
2848 END_PROFILE(SMBnttrans);
2849 return;
2850 }
2851
2852 if ((state = talloc(conn, struct trans_state)) == NULL) {
2853 reply_nterror(req, NT_STATUS_NO_MEMORY);
2854 END_PROFILE(SMBnttrans);
2855 return;
2856 }
2857
2858 state->cmd = SMBnttrans;
2859
2860 state->mid = req->mid;
2861 state->vuid = req->vuid;
2862 state->total_data = IVAL(req->vwv+3, 1);
2863 state->data = NULL;
2864 state->total_param = IVAL(req->vwv+1, 1);
2865 state->param = NULL;
2866 state->max_data_return = IVAL(req->vwv+7, 1);
2867 state->max_param_return = IVAL(req->vwv+5, 1);
2868
2869 /* setup count is in *words* */
2870 state->setup_count = 2*CVAL(req->vwv+17, 1);
2871 state->setup = NULL;
2872 state->call = function_code;
2873
2874 DEBUG(10, ("num_setup=%u, "
2875 "param_total=%u, this_param=%u, max_param=%u, "
2876 "data_total=%u, this_data=%u, max_data=%u, "
2877 "param_offset=%u, data_offset=%u\n",
2878 (unsigned)state->setup_count,
2879 (unsigned)state->total_param, (unsigned)pscnt,
2880 (unsigned)state->max_param_return,
2881 (unsigned)state->total_data, (unsigned)dscnt,
2882 (unsigned)state->max_data_return,
2883 (unsigned)psoff, (unsigned)dsoff));
2884
2885 /*
2886 * All nttrans messages we handle have smb_wct == 19 +
2887 * state->setup_count. Ensure this is so as a sanity check.
2888 */
2889
2890 if(req->wct != 19 + (state->setup_count/2)) {
2891 DEBUG(2,("Invalid smb_wct %d in nttrans call (should be %d)\n",
2892 req->wct, 19 + (state->setup_count/2)));
2893 goto bad_param;
2894 }
2895
2896 /* Don't allow more than 128mb for each value. */
2897 if ((state->total_data > (1024*1024*128)) ||
2898 (state->total_param > (1024*1024*128))) {
2899 reply_nterror(req, NT_STATUS_NO_MEMORY);
2900 END_PROFILE(SMBnttrans);
2901 return;
2902 }
2903
2904 if ((dscnt > state->total_data) || (pscnt > state->total_param))
2905 goto bad_param;
2906
2907 if (state->total_data) {
2908
2909 if (trans_oob(state->total_data, 0, dscnt)
2910 || trans_oob(smb_len(req->inbuf), dsoff, dscnt)) {
2911 goto bad_param;
2912 }
2913
2914 /* Can't use talloc here, the core routines do realloc on the
2915 * params and data. */
2916 if ((state->data = (char *)SMB_MALLOC(state->total_data)) == NULL) {
2917 DEBUG(0,("reply_nttrans: data malloc fail for %u "
2918 "bytes !\n", (unsigned int)state->total_data));
2919 TALLOC_FREE(state);
2920 reply_nterror(req, NT_STATUS_NO_MEMORY);
2921 END_PROFILE(SMBnttrans);
2922 return;
2923 }
2924
2925 memcpy(state->data,smb_base(req->inbuf)+dsoff,dscnt);
2926 }
2927
2928 if (state->total_param) {
2929
2930 if (trans_oob(state->total_param, 0, pscnt)
2931 || trans_oob(smb_len(req->inbuf), psoff, pscnt)) {
2932 goto bad_param;
2933 }
2934
2935 /* Can't use talloc here, the core routines do realloc on the
2936 * params and data. */
2937 if ((state->param = (char *)SMB_MALLOC(state->total_param)) == NULL) {
2938 DEBUG(0,("reply_nttrans: param malloc fail for %u "
2939 "bytes !\n", (unsigned int)state->total_param));
2940 SAFE_FREE(state->data);
2941 TALLOC_FREE(state);
2942 reply_nterror(req, NT_STATUS_NO_MEMORY);
2943 END_PROFILE(SMBnttrans);
2944 return;
2945 }
2946
2947 memcpy(state->param,smb_base(req->inbuf)+psoff,pscnt);
2948 }
2949
2950 state->received_data = dscnt;
2951 state->received_param = pscnt;
2952
2953 if(state->setup_count > 0) {
2954 DEBUG(10,("reply_nttrans: state->setup_count = %d\n",
2955 state->setup_count));
2956
2957 /*
2958 * No overflow possible here, state->setup_count is an
2959 * unsigned int, being filled by a single byte from
2960 * CVAL(req->vwv+13, 0) above. The cast in the comparison
2961 * below is not necessary, it's here to clarify things. The
2962 * validity of req->vwv and req->wct has been checked in
2963 * init_smb_request already.
2964 */
2965 if ((state->setup_count/2) + 19 > (unsigned int)req->wct) {
2966 goto bad_param;
2967 }
2968
2969 state->setup = (uint16_t *)TALLOC(state, state->setup_count);
2970 if (state->setup == NULL) {
2971 DEBUG(0,("reply_nttrans : Out of memory\n"));
2972 SAFE_FREE(state->data);
2973 SAFE_FREE(state->param);
2974 TALLOC_FREE(state);
2975 reply_nterror(req, NT_STATUS_NO_MEMORY);
2976 END_PROFILE(SMBnttrans);
2977 return;
2978 }
2979
2980 memcpy(state->setup, req->vwv+19, state->setup_count);
2981 dump_data(10, (uint8_t *)state->setup, state->setup_count);
2982 }
2983
2984 if ((state->received_data == state->total_data) &&
2985 (state->received_param == state->total_param)) {
2986 handle_nttrans(conn, state, req);
2987 SAFE_FREE(state->param);
2988 SAFE_FREE(state->data);
2989 TALLOC_FREE(state);
2990 END_PROFILE(SMBnttrans);
2991 return;
2992 }
2993
2994 DLIST_ADD(conn->pending_trans, state);
2995
2996 /* We need to send an interim response then receive the rest
2997 of the parameter/data bytes */
2998 reply_outbuf(req, 0, 0);
2999 show_msg((char *)req->outbuf);
3000 END_PROFILE(SMBnttrans);
3001 return;
3002
3003 bad_param:
3004
3005 DEBUG(0,("reply_nttrans: invalid trans parameters\n"));
3006 SAFE_FREE(state->data);
3007 SAFE_FREE(state->param);
3008 TALLOC_FREE(state);
3009 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
3010 END_PROFILE(SMBnttrans);
3011 return;
3012}
3013
3014/****************************************************************************
3015 Reply to a SMBnttranss
3016 ****************************************************************************/
3017
3018void reply_nttranss(struct smb_request *req)
3019{
3020 connection_struct *conn = req->conn;
3021 uint32_t pcnt,poff,dcnt,doff,pdisp,ddisp;
3022 struct trans_state *state;
3023
3024 START_PROFILE(SMBnttranss);
3025
3026 show_msg((const char *)req->inbuf);
3027
3028 /* Windows clients expect all replies to
3029 an NT transact secondary (SMBnttranss 0xA1)
3030 to have a command code of NT transact
3031 (SMBnttrans 0xA0). See bug #8989 for details. */
3032 req->cmd = SMBnttrans;
3033
3034 if (req->wct < 18) {
3035 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
3036 END_PROFILE(SMBnttranss);
3037 return;
3038 }
3039
3040 for (state = conn->pending_trans; state != NULL;
3041 state = state->next) {
3042 if (state->mid == req->mid) {
3043 break;
3044 }
3045 }
3046
3047 if ((state == NULL) || (state->cmd != SMBnttrans)) {
3048 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
3049 END_PROFILE(SMBnttranss);
3050 return;
3051 }
3052
3053 /* Revise state->total_param and state->total_data in case they have
3054 changed downwards */
3055 if (IVAL(req->vwv+1, 1) < state->total_param) {
3056 state->total_param = IVAL(req->vwv+1, 1);
3057 }
3058 if (IVAL(req->vwv+3, 1) < state->total_data) {
3059 state->total_data = IVAL(req->vwv+3, 1);
3060 }
3061
3062 pcnt = IVAL(req->vwv+5, 1);
3063 poff = IVAL(req->vwv+7, 1);
3064 pdisp = IVAL(req->vwv+9, 1);
3065
3066 dcnt = IVAL(req->vwv+11, 1);
3067 doff = IVAL(req->vwv+13, 1);
3068 ddisp = IVAL(req->vwv+15, 1);
3069
3070 state->received_param += pcnt;
3071 state->received_data += dcnt;
3072
3073 if ((state->received_data > state->total_data) ||
3074 (state->received_param > state->total_param))
3075 goto bad_param;
3076
3077 if (pcnt) {
3078 if (trans_oob(state->total_param, pdisp, pcnt)
3079 || trans_oob(smb_len(req->inbuf), poff, pcnt)) {
3080 goto bad_param;
3081 }
3082 memcpy(state->param+pdisp, smb_base(req->inbuf)+poff,pcnt);
3083 }
3084
3085 if (dcnt) {
3086 if (trans_oob(state->total_data, ddisp, dcnt)
3087 || trans_oob(smb_len(req->inbuf), doff, dcnt)) {
3088 goto bad_param;
3089 }
3090 memcpy(state->data+ddisp, smb_base(req->inbuf)+doff,dcnt);
3091 }
3092
3093 if ((state->received_param < state->total_param) ||
3094 (state->received_data < state->total_data)) {
3095 END_PROFILE(SMBnttranss);
3096 return;
3097 }
3098
3099 handle_nttrans(conn, state, req);
3100
3101 DLIST_REMOVE(conn->pending_trans, state);
3102 SAFE_FREE(state->data);
3103 SAFE_FREE(state->param);
3104 TALLOC_FREE(state);
3105 END_PROFILE(SMBnttranss);
3106 return;
3107
3108 bad_param:
3109
3110 DEBUG(0,("reply_nttranss: invalid trans parameters\n"));
3111 DLIST_REMOVE(conn->pending_trans, state);
3112 SAFE_FREE(state->data);
3113 SAFE_FREE(state->param);
3114 TALLOC_FREE(state);
3115 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
3116 END_PROFILE(SMBnttranss);
3117 return;
3118}
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